Berkshire Hills Bancorp (BHLB) 10-K 1 Mar 17 2016 FY Annual report Financial data

Document and Entity Information

Document and Entity Information - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2016	Feb. 24, 2017	Jun. 30, 2016
Document and Entity Information
Entity Registrant Name	BERKSHIRE HILLS BANCORP INC
Entity Central Index Key	1,108,134
Document Type	10-K
Document Period End Date	Dec. 31, 2016
Amendment Flag	false
Current Fiscal Year End Date	--12-31
Entity Well-known Seasoned Issuer	No
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Filer Category	Large Accelerated Filer
Entity Public Float			$ 819
Entity Common Stock, Shares Outstanding (shares)		35,730,100
Document Fiscal Year Focus	2,016
Document Fiscal Period Focus	FY

CONSOLIDATED BALANCE SHEETS

CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Assets
Cash and due from banks	$ 71,494	$ 72,918
Short-term investments	41,581	30,644
Total cash and cash equivalents	113,075	103,562
Trading security	13,229	14,189
Securities available for sale, at fair value	1,209,537	1,154,457
Securities held to maturity (fair values of $337,680 in 2016 and $136,904 in 2015)	334,368	131,652
Federal Home Loan Bank stock and other restricted securities	71,112	71,018
Total securities	1,628,246	1,371,316
Loans held for sale, at fair value	120,673	13,191
Commercial real estate	2,616,438	2,059,767
Commercial and industrial loans	1,062,038	1,048,263
Residential mortgages	1,893,131	1,815,035
Consumer loans	978,180	802,171
Total loans	6,549,787	5,725,236
Less: Allowance for loan losses	(43,998)	(39,308)
Net loans	6,505,789	5,685,928
Premises and equipment, net	93,215	88,072
Other real estate owned	151	1,725
Goodwill	403,106	323,943
Other intangible assets	19,445	10,664
Cash surrender value of bank-owned life insurance	139,257	125,233
Deferred tax assets, net	41,128	42,526
Other assets	98,457	64,926
Total assets	9,162,542	7,831,086
Liabilities
Demand deposits	1,278,875	1,081,860
NOW deposits	570,583	510,807
Money market deposits	1,781,605	1,408,107
Savings deposits	657,486	601,761
Time deposits	2,333,543	1,986,600
Total deposits	6,622,092	5,589,135
Short-term debt	1,082,044	1,071,200
Long-term Federal Home Loan Bank advances	142,792	103,135
Subordinated notes	89,161	88,983
Total borrowings	1,313,997	1,263,318
Other liabilities	133,155	91,444
Total liabilities	8,069,244	6,943,897
Shareholders’ equity
Common stock ($.01 par value; 50,000,000 shares authorized, 36,732,129 shares issued, and 35,672,817 shares outstanding in 2016; 50,000,000 shares authorized, 32,321,962 shares issued, and 30,973,986 shares outstanding in 2015)	366	322
Additional paid-in capital	898,989	742,619
Unearned compensation	(6,374)	(6,997)
Retained earnings	217,494	183,885
Accumulated other comprehensive income (loss)	9,766	(3,305)
Treasury stock, at cost (1,059,312 shares in 2016 and 1,179,045 shares in 2015)	(26,943)	(29,335)
Total shareholders’ equity	1,093,298	887,189
Total liabilities and shareholders’ equity	$ 9,162,542	$ 7,831,086

CONSOLIDATED BALANCE SHEETS (Pa

CONSOLIDATED BALANCE SHEETS (Parenthetical) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Statement of Financial Position [Abstract]
Held-to-maturity securities, fair value	$ 337,680	$ 136,904
Common stock, par value (USD per share)	$ 0.01	$ 0.01
Common stock, shares authorized (shares)	50,000,000	50,000,000
Common stock, shares issued (shares)	36,732,129	32,321,962
Common stock, shares outstanding (shares)	35,672,817	30,973,986
Treasury stock, shares (shares)	1,059,312	1,179,045

CONSOLIDATED STATEMENTS OF INCO

CONSOLIDATED STATEMENTS OF INCOME - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Interest and dividend income
Loans	$ 242,600	$ 211,347	$ 174,467
Securities and other	37,839	35,683	32,575
Total interest and dividend income	280,439	247,030	207,042
Interest expense
Deposits	30,883	22,948	19,185
Borrowings and subordinated notes	17,289	10,233	9,166
Total interest expense	48,172	33,181	28,351
Net interest income	232,267	213,849	178,691
Non-interest income
Loan related income	16,694	8,310	6,328
Mortgage banking income	7,555	4,133	2,561
Deposit related fees	24,963	25,084	24,635
Insurance commissions and fees	10,477	10,251	10,364
Wealth management fees	8,917	9,702	9,546
Total fee income	68,606	57,480	53,434
Other	(3,289)	(5,302)	2,646
(Loss) Gain on securities, net	(551)	2,110	482
Gain on sale of business operations, net	1,085	0	0
Loss on termination of hedges	0	0	(8,792)
Total non-interest income	65,851	54,288	47,770
Total net revenue	298,118	268,137	226,461
Provision for loan losses	17,362	16,726	14,968
Non-interest expense
Compensation and benefits	104,600	97,370	81,768
Occupancy and equipment	27,220	28,486	26,905
Technology and communications	19,883	16,881	14,764
Marketing and promotion	3,161	3,306	2,572
Professional services	6,199	5,172	4,211
FDIC premiums and assessments	5,066	4,649	4,284
Other real estate owned and foreclosures	691	833	801
Amortization of intangible assets	2,927	3,563	4,812
Merger, restructuring and conversion related expenses	15,461	17,611	8,491
Other	18,094	18,958	17,378
Total non-interest expense	203,302	196,829	165,986
Income from continuing operations before income taxes	77,454	54,582	45,507
Income tax expense	18,784	5,064	11,763
Net income	$ 58,670	$ 49,518	$ 33,744
Basic earnings per share (USD per share)	$ 1.89	$ 1.74	$ 1.36
Diluted earnings per share (USD per share)	$ 1.88	$ 1.73	$ 1.36
Weighted average common shares outstanding:
Basic (shares)	30,988	28,393	24,730
Diluted (shares)	31,167	28,564	24,854

CONSOLIDATED STATEMENTS OF COMP

CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Statement of Comprehensive Income [Abstract]
Net income	$ 58,670	$ 49,518	$ 33,744
Other comprehensive income (loss), before tax:
Changes in unrealized gains and losses on securities available-for-sale	18,860	(9,677)	25,287
Changes in unrealized gains and losses on derivative hedges	1,958	(5,232)	(1,010)
Changes in unrealized gains and losses on terminated swaps	0	0	3,237
Changes in unrealized gains and losses on pension	515	(1,177)	(2,308)
Total other comprehensive income (loss), before tax	21,333	(16,086)	25,206
Income taxes related to other comprehensive income (loss):
Changes in unrealized gains and losses on securities available-for-sale	(7,199)	3,640	(9,595)
Changes in unrealized gains and losses on derivative hedges	(835)	2,094	407
Changes in unrealized gains and losses on terminated swaps	0	0	(1,312)
Changes in unrealized gains and losses on pension	(228)	468	930
Total income tax (expense) benefit related to other comprehensive income (loss)	(8,262)	6,202	(9,570)
Total other comprehensive income (loss)	13,071	(9,884)	15,636
Total comprehensive income	$ 71,741	$ 39,634	$ 49,380

CONSOLIDATED STATEMENTS OF CHAN

CONSOLIDATED STATEMENTS OF CHANGES IN STOCKHOLDERS' EQUITY - USD ($) $ in Thousands	Total	Hampden Bancorp Inc	Firestone Financial	44 Business Capital	First Choice Bank	Common stock	Common stockHampden Bancorp Inc	Common stockFirestone Financial	Common stock44 Business Capital	Common stockFirst Choice Bank	Additional paid-in capital	Additional paid-in capitalHampden Bancorp Inc	Additional paid-in capitalFirestone Financial	Additional paid-in capitalFirst Choice Bank	Unearned compensation	Retained earnings	Accumulated other comprehensive (loss) income	Treasury stock	[1]	Treasury stock44 Business Capital	[1]
Beginning balance (shares) at Dec. 31, 2013						25,036,000
Beginning balance at Dec. 31, 2013	$ 678,062					$ 265					$ 587,247				$ (5,563)	$ 141,958	$ (9,057)	$ (36,788)
Comprehensive income:
Net income	33,744															33,744
Other net comprehensive income (loss)	15,636																15,636
Total comprehensive income	49,380
Cash dividends declared	(18,075)															(18,075)
Treasury stock purchased (shares)						(100,000)
Treasury stock purchased	(2,468)																	(2,468)
Forfeited shares (shares)						(9,000)
Forfeited shares	0										(3)				221			(218)
Exercise of stock options (shares)						90,000
Exercise of stock options	1,064															(1,181)		2,245
Restricted stock grants (shares)						187,000
Restricted stock grants	0										(19)				(4,604)			4,623
Stock-based compensation	3,840										41				3,799
Net tax benefit related to stock-based compensation	(1,971)										(1,971)
Other, net (shares)						(21,000)
Other, net	(545)										(6)							(539)
Ending balance (shares) at Dec. 31, 2014						25,183,000
Ending balance at Dec. 31, 2014	709,287					$ 265					585,289				(6,147)	156,446	6,579	(33,145)
Comprehensive income:
Net income	49,518															49,518
Other net comprehensive income (loss)	(9,884)																(9,884)
Total comprehensive income	39,634
Stock issued pursuant to acquisition (shares)							4,186,000	1,442,000
Stock issued pursuant to acquisition		$ 114,604	$ 42,107				$ 42	$ 15				$ 114,562	$ 42,092
Cash dividends declared	(21,903)															(21,903)
Treasury stock purchased (shares)						(18,000)
Treasury stock purchased	(550)																	(550)
Forfeited shares (shares)						(20,000)
Forfeited shares	0										47				509			(556)
Exercise of stock options (shares)						16,000
Exercise of stock options	239															(176)		415
Restricted stock grants (shares)						226,000
Restricted stock grants	0										440				(6,029)			5,589
Stock-based compensation	4,670										0				4,670
Net tax benefit related to stock-based compensation	167										167
Other, net (shares)						(41,000)
Other, net	(1,066)										22							(1,088)
Ending balance (shares) at Dec. 31, 2015						30,974,000
Ending balance at Dec. 31, 2015	887,189					$ 322					742,619				(6,997)	183,885	(3,305)	(29,335)
Comprehensive income:
Net income	58,670															58,670
Other net comprehensive income (loss)	13,071																13,071
Total comprehensive income	71,741
Stock issued pursuant to acquisition (shares)				45,000	4,400,000				45,000	4,410,000
Stock issued pursuant to acquisition				$ 1,217	$ 151,048					$ 44				$ 151,004						$ 1,217
Cash dividends declared	(24,916)															(24,916)
Treasury stock purchased	0										4,632							(4,632)
Forfeited shares (shares)						(70,000)
Forfeited shares	0										148				1,789			(1,937)
Exercise of stock options (shares)						151,000
Exercise of stock options	3,712															(145)		3,857
Restricted stock grants (shares)						211,000
Restricted stock grants	0										575				(5,787)			5,212
Stock-based compensation	4,621														4,621
Net tax benefit related to stock-based compensation	(1)										(1)
Other, net (shares)						(48,000)
Other, net	(1,313)										12							(1,325)
Ending balance (shares) at Dec. 31, 2016						35,673,000
Ending balance at Dec. 31, 2016	$ 1,093,298					$ 366					$ 898,989				$ (6,374)	$ 217,494	$ 9,766	$ (26,943)
Comprehensive income:
Treasury stock retired (in shares)	168,931
[1]	Treasury stock adjustment represents the extinguishment of 168,931 shares of Berkshire Hills Bancorp stock held by the Company's subsidiary.

CONSOLIDATED STATEMENTS OF CHA7

CONSOLIDATED STATEMENTS OF CHANGES IN STOCKHOLDERS' EQUITY (Parenthetical) - $ / shares	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Statement of Stockholders' Equity [Abstract]
Cash dividends declared (USD per share)	$ 0.80	$ 0.76	$ 0.72

CONSOLIDATED STATEMENTS OF CASH

CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Cash flows from operating activities:
Net income	$ 58,670	$ 49,518	$ 33,744
Adjustments to reconcile net income to net cash provided by operating activities:
Provision for loan losses	17,362	16,726	14,968
Net amortization of securities	4,052	3,010	2,447
Unamortized net loan costs and premiums	(4,138)	(961)	(2,237)
Premises and equipment depreciation and amortization expense	8,393	8,594	8,292
Stock-based compensation expense	4,621	4,686	3,839
Accretion of purchase accounting entries, net	(9,407)	(10,074)	(6,938)
Amortization of other intangibles	2,927	3,563	4,812
Write down of other real estate owned	395	480	196
Excess tax loss from stock-based payment arrangements	(105)	(167)	(102)
Income from cash surrender value of bank-owned life insurance policies	(3,913)	(3,356)	(3,058)
(Loss) gain on sales of securities, net	551	(2,110)	(482)
Net decrease (increase) in loans held for sale	5,185	(3,212)	(3,653)
Loss on disposition of assets	1,318	3,514	662
Loss on sale of real estate	40	191	231
Loss on termination of hedges	0	0	3,237
Amortization of tax credits	8,882	11,428	1,668
Net change in other	3,309	4,458	(1,803)
Net cash provided by operating activities	98,142	86,288	55,823
Cash flows from investing activities:
Net decrease in trading security	599	570	541
Proceeds from sales of securities available for sale	421,843	41,169	143,488
Proceeds from maturities, calls and prepayments of securities available for sale	166,736	184,753	131,202
Purchases of securities available for sale	(400,053)	(285,637)	(575,504)
Proceeds from maturities, calls and prepayments of securities held to maturity	7,734	8,534	4,800
Purchases of securities held to maturity	(7,115)	(62,274)	(3,227)
Net change in loans	(334,347)	(388,091)	(481,846)
Acquisitions, net of cash paid	(48,180)	74,324	423,416
Net cash used for branch sale	0	(11,715)	0
Proceeds from surrender of bank-owned life insurance	258	554	0
Proceeds from sale of Federal Home Loan Bank stock	19,461	2,357	5,340
Purchase of Federal Home Loan Bank stock	(19,555)	(10,706)	(10,778)
Proceeds of premises and equipment	226	2,261	2,315
Purchase from premises and equipment, net	(9,101)	(7,340)	(8,451)
Net investment in limited partnership tax credits	(7,616)	(5,105)	(5,384)
Proceeds from sale of other real estate	1,515	1,854	4,784
Net cash used in investing activities	(207,595)	(454,492)	(369,304)
Cash flows from financing activities:
Net increase in deposits	140,730	475,823	340,856
Proceeds from Federal Home Loan Bank advances and other borrowings	9,364,599	8,566,300	5,432,069
Repayments of Federal Home Loan Bank advances and other borrowings	(9,365,159)	(8,620,064)	(5,443,853)
Purchase of treasury stock	0	(550)	(2,467)
Exercise of stock options	3,712	239	1,064
Excess tax loss from stock-based payment arrangements	0	167	102
Common stock cash dividends paid	(24,916)	(21,903)	(18,075)
Net cash provided by financing activities	118,966	400,012	309,696
Net change in cash and cash equivalents	9,513	31,808	(3,785)
Cash and cash equivalents at beginning of year	103,562	71,754	75,539
Cash and cash equivalents at end of year	113,075	103,562	71,754
Supplemental cash flow information:
Interest paid on deposits	28,777	22,130	18,439
Interest paid on borrowed funds	16,674	9,974	9,988
Income taxes (refunded) paid, net	16,229	429	746
Acquisition of non-cash assets and liabilities:
Assets acquired	1,169,086	948,796	18,064
Liabilities assumed	(965,529)	(762,261)	(441,550)
Other non-cash changes:
Other net comprehensive income (loss)	13,071	(9,884)	15,636
Real estate owned acquired in settlement of loans	$ 340	$ 2,085	$ 4,500

SUMMARY OF SIGNIFICANT ACCOUNTI

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES	12 Months Ended
	Dec. 31, 2016
Accounting Policies [Abstract]
SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES	SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES Basis of Presentation and Consolidation The consolidated financial statements (the “financial statements”) of Berkshire Hills Bancorp, Inc. and its subsidiaries (the “Company” or “Berkshire”) have been prepared in conformity with accounting principles generally accepted in the United States of America (“GAAP”). The Company is a Delaware corporation and the holding company for Berkshire Bank (the “Bank”), a Massachusetts-chartered trust company headquartered in Pittsfield, Mass. These financial statements include the accounts of the Company, its wholly-owned subsidiaries and the Bank’s consolidated subsidiaries. In consolidation, all significant intercompany accounts and transactions are eliminated. The results of operations of companies or assets acquired are included only from the dates of acquisition. All material wholly-owned and majority-owned subsidiaries are consolidated unless GAAP requires otherwise. Reclassifications Certain items in prior financial statements have been reclassified to conform to the current presentation. The Company has evaluated subsequent events for potential recognition and/or disclosure through the date these consolidated financial statements were issued. Use of Estimates The preparation of financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent liabilities at the date of the financial statements. Actual results could differ from those estimates. Material estimates that are particularly susceptible to significant change in the near term relate to the determination of the allowance for loan losses; the valuation of deferred tax assets; the estimates related to the initial measurement of goodwill and intangible assets and subsequent impairment analyses; the determination of other-than-temporary impairment of securities; and the determination of fair value of financial instruments and subsequent impairment analysis. Business Combinations Business combinations are accounted for using the acquisition method of accounting. Under this method, the accounts of an acquired entity are included with the acquirer’s accounts as of the date of acquisition with any excess of purchase price over the fair value of the net assets acquired (including identifiable intangibles) capitalized as goodwill. To consummate an acquisition, the Company will typically issue common stock and/or pay cash, depending on the terms of the acquisition agreement. The value of common shares issued is determined based upon the market price of the stock as of the closing of the acquisition. Cash and Cash equivalents Cash and cash equivalents include cash, balances due from banks, and short-term investments, all of which had an original maturity within 90 days. Due to the nature of cash and cash equivalents and the near term maturity, the Company estimated that the carrying amount of such instruments approximated fair value. The nature of the Bank’s business requires that it maintain amounts due from banks which at times, may exceed federally insured limits. The Bank has not experienced any losses on such amounts and all amounts are maintained with well-capitalized institutions. Trading Security The Company accounts for a tax advantaged economic development bond originated in 2008 at fair value, in accordance with Financial Accounting Standards Board’s (“FASB”) Accounting Standards Codification (“ASC”) 320. The bond has been designated as a trading account security and is recorded at fair value, with changes in unrealized gains and losses recorded through earnings each period as part of non-interest income. Securities Debt securities that management has the intent and ability to hold to maturity are classified as held to maturity and carried at amortized cost. All other securities, including equity securities with readily determinable fair values, are classified as available for sale and carried at fair value, with unrealized gains and losses reported as a component of other net comprehensive income. Management determines the appropriate classification of securities at the time of purchase. Restricted equity securities, such as stock in the Federal Home Loan Bank of Boston (“FHLBB”) are carried at cost. There are no quoted market prices for the Company’s restricted equity securities. The Bank is a member of the FHLBB, which requires that members maintain an investment in FHLBB stock, which may be redeemed based on certain conditions. The Bank reviews for impairment based on the ultimate recoverability of the cost bases in the FHLBB stock. Purchase premiums and discounts are recognized in interest income using the interest method over the terms of the securities. Gains and losses on the sale of securities are recorded on the trade date and are determined using the specific identification method. The Company evaluates debt and equity securities within the Company’s available for sale and held to maturity portfolios for other-than-temporary impairment (“OTTI”), at least quarterly. If the fair value of a debt security is below the amortized cost basis of the security, OTTI is required to be recognized if any of the following are met: (1) the Company intends to sell the security; (2) it is “more likely than not” that the Company will be required to sell the security before recovery of its amortized cost basis; or (3) the present value of expected cash flows is not sufficient to recover the entire amortized cost basis. For all impaired debt securities that the Company intends to sell, or more likely than not will be required to sell, the full amount of the depreciation is recognized as OTTI through earnings. Credit-related OTTI for all other impaired debt securities is recognized through earnings. Non-credit related OTTI for such debt securities is recognized in other comprehensive income, net of applicable taxes. In evaluating its marketable equity securities portfolios for OTTI, the Company considers its intent and ability to hold an equity security to recovery of its cost basis in addition to various other factors, including the length of time and the extent to which the fair value has been less than cost and the financial condition and near term prospects of the issuer. Any OTTI on marketable equity securities is recognized immediately through earnings. Loans Held for Sale Loans originated with the intent to be sold in the secondary market are accounted for under the fair value option. Non-refundable fees and direct loan origination costs related to residential mortgage loans held for sale are recognized in non-interest income or non-interest expense as earned or incurred. Fair value is primarily determined based on quoted prices for similar loans in active markets. Gains and losses on sales of residential mortgage loans (sales proceeds minus carrying value) are recorded in non-interest income. Loans that were previously held for investment that the Company has an active plan to sell are transferred to loans held for sale at the lower of cost or market (fair value). The market price is primarily determined based on quoted prices for similar loans in active markets or agreed upon sales prices. Gains are recorded in non-interest income at sale to the extent that the sale price of the loan exceeds carrying value. Any reduction in the loan’s value, prior to being transferred to loans held for sale, is reflected as a charge-off of the recorded investment in the loan resulting in a new cost basis, with a corresponding reduction in the allowance for loan losses. Further changes in the fair value of the loan are recognized in non-interest income or expense, accordingly. Loans Loans are reported at their outstanding unpaid principal balances adjusted for charge-offs, the allowance for loan losses, the unamortized balance of any deferred fees or costs on originated loans and the unamortized balance of any premiums or discounts on loans purchased or acquired through mergers. Interest income is accrued on the unpaid principal balance. Interest income includes net accretion or amortization of deferred fees or costs and of premiums or discounts. Direct loan origination costs, net of any origination fees, in addition to premiums and discounts on loans, are deferred and recognized as an adjustment of the related loan yield using the interest method. Interest on loans, excluding automobile loans, is generally not accrued on loans which are ninety days or more past due unless the loan is well-secured and in the process of collection. Past due status is based on contractual terms of the loan. Automobile loans generally continue accruing until one hundred and twenty days delinquent, at which time they are charged off. All interest accrued but not collected for loans that are placed on non-accrual or charged-off is reversed against interest income, except for certain loans designated as well-secured. The interest on non-accrual loans is accounted for on the cash-basis or cost-recovery method, until qualifying for return to accrual. All payments received on non-accrual loans are applied against the principal balance of the loan. Loans are returned to accrual status when all the principal and interest amounts contractually due are brought current and future payments are reasonably assured. Acquired Loans Loans that the Company acquired in acquisitions are initially recorded at fair value with no carryover of the related allowance for credit losses. Determining the fair value of the loans involves estimating the amount and timing of principal and interest cash flows initially expected to be collected on the loans and discounting those cash flows at an appropriate market rate of interest. For loans that meet the criteria stipulated in ASC 310-30, “ Loans and Debt Securities Acquired with Deteriorated Credit Quality, ” the Company recognizes the accretable yield, which is defined as the excess of all cash flows expected at acquisition over the initial fair value of the loan, as interest income on a level-yield basis over the expected remaining life of the loan. The excess of the loan’s contractually required payments over the cash flows expected to be collected is the nonaccretable difference. The nonaccretable difference is not recognized as an adjustment of yield, a loss accrual, or a valuation allowance. Going forward, the Company continues to evaluate whether the timing and the amount of cash to be collected are reasonably expected. Subsequent significant increases in cash flows the Company expects to collect will first reduce any previously recognized valuation allowance and then be reflected prospectively as an increase to the level yield. Subsequent decreases in expected cash flows may result in the loan being considered impaired. Interest income is not recognized to the extent that the net investment in the loan would increase to an amount greater than the estimated payoff amount. For ASC 310-30 loans, the expected cash flows reflect anticipated prepayments, determined on a loan by loan basis according to the anticipated collection plan of these loans. The expected prepayments used to determine the accretable yield are consistent between the cash flows expected to be collected and projections of contractual cash flows so as to not affect the nonaccretable difference. For ASC 310-30 loans, prepayments result in the recognition of the nonaccretable balance as current period yield. Changes in prepayment assumptions may change the amount of interest income and principal expected to be collected. Interest income is also net of recoveries recorded on acquired impaired loans. For loans that do not meet the ASC 310-30 criteria, the Company accretes interest income based on the contractually required cash flows. The Company subjects loans that do not meet the ASC 310-30 criteria to ASC 450, “Contingencies” by collectively evaluating these loans for an allowance for loan loss. Acquired loans that met the criteria for nonaccrual of interest prior to the acquisition are considered performing upon acquisition, regardless of whether the customer is contractually delinquent, if the Company can reasonably estimate the timing and amount of the expected cash flows on such loans and if the Company expects to fully collect the new carrying value of the loans. As such, the Company may no longer consider the loan to be nonaccrual or nonperforming and may accrue interest on these loans, including the impact of any accretable yield. The Company has determined that the Company can reasonably estimate future cash flows on the Company’s current portfolio of acquired loans that are past due 90 days or more and on which the Company is accruing interest and the Company expects to fully collect the carrying value of the loans. Allowance for Loan Losses The allowance for loan losses is established based upon the level of estimated probable losses in the current loan portfolio. Loan losses are charged against the allowance when management believes the collectability of a loan balance is doubtful. Subsequent recoveries, if any, are credited to the allowance. The allowance for loan losses includes allowance allocations calculated in accordance with ASC 310, “Receivables,” and allowance allocations calculated in accordance with ASC 450, “Contingencies.” The allowance for loan losses is allocated to loan types using both a formula-based approach applied to groups of loans and an analysis of certain individual loans for impairment. The formula-based approach emphasizes loss factors derived from actual historical and industry portfolio loss rates, which are combined with an assessment of certain qualitative factors to determine the allowance amounts allocated to the various loan categories. Allowance amounts are based on an estimate of historical average annual percentage rate of loan loss for each loan segment, a temporal estimate of the incurred loss emergence and confirmation period for each loan category, and certain qualitative risk factors considered in the computation of the allowance for loan losses. Qualitative risk factors impacting the inherent risk of loss within the portfolio include the following: • National and local economic conditions, regulatory/legislative changes, or other competitive factors affecting the collectability of the portfolio • Trends in underwriting characteristics, composition of the portfolio, and/or asset quality • Changes in underwriting standards and/or collection, charge off, recovery, and account management practice • The existence and effect of any concentrations of credit Risk characteristics relevant to each portfolio segment are as follows: Commercial real estate — Loans in this segment are primarily owner-occupied or income-producing properties throughout New England and Northeastern New York. The underlying cash flows generated by the properties are adversely impacted by a downturn in the economy, which in turn, will have an effect on the credit quality in this segment. Management monitors the cash flows of these loans. In addition, construction loans in this segment primarily include real estate development loans for which payment is derived from sale of the property or long term financing at completion. Credit risk is affected by cost overruns, time to sell at an adequate price, and market conditions. Commercial and industrial loans — Loans in this segment are made to businesses and are generally secured by assets of the business. Repayment is expected from the cash flows of the business. Loans in this segment include asset based loans which generally have no scheduled repayment and which are closely monitored against formula based collateral advance ratios. A weakened economy, and resultant decreased consumer spending, will have an effect on the credit quality in this segment. Residential mortgage — The Company generally does not originate loans with a loan-to-value ratio greater than 80 percent and does not grant subprime loans. The Company requires private mortgage insurance (PMI) in cases when the loan-to-value ratio exceeds 80 percent . All loans in this segment are collateralized by residential real estate and repayment is dependent on the credit quality of the individual borrower. The overall health of the economy, including unemployment rates and housing prices, will have an effect on the credit quality in this segment. Consumer loans — Loans in this segment are primarily home equity lines of credit and second mortgages, together with automobile loans and other consumer loans. The overall health of the economy, including unemployment rates and housing prices, will have an effect on the credit quality in this segment. The Company utilizes a blend of historical and industry portfolio loss rates for commercial real estate and commercial and industrial loans that are assessed by internal risk rating. Historical loss rates for residential mortgages, home equity and other consumer loans are not risk graded but are assessed based on the total of each loan segment. This approach incorporates qualitative adjustments based upon management’s assessment of various market and portfolio specific risk factors into its formula-based estimate. Due to the imprecise nature of the loan loss estimation process and ever changing conditions, the qualitative risk attributes may not adequately capture amounts of incurred loss in the formula-based loan loss components used to determine allocations in the Company’s analysis of the adequacy of the allowance for loan losses. The Company evaluates certain loans individually for specific impairment. Large groups of small balance homogeneous loans such as the residential mortgage, home equity, and other consumer portfolios are collectively evaluated for impairment. A loan is considered impaired when, based on current information and events, it is probable that the Company will be unable to collect the scheduled payments of principal or interest when due according to the contractual terms of the loan agreement. Factors considered by management in determining impairment include payment status, collateral value, and the probability of collecting scheduled principal and interest payments when due. Loans that experience insignificant payment delays and payment shortfalls generally are not classified as impaired. Loans are selected for evaluation based upon a change in internal risk rating, occurrence of delinquency, loan classification, or non-accrual status. The evaluation of certain loans individually for specific impairment includes loans that were previously classified as Troubled Debt Restructurings (“TDRs”) or continue to be classified as TDRs. A specific allowance amount is allocated to an individual loan when such loan has been deemed impaired and when the amount of the probable loss is able to be estimated. Estimates of loss may be determined by the present value of anticipated future cash flows or the loan’s observable fair market value, or the fair value of the collateral, if the loan is collateral dependent. However, for collateral dependent loans, the amount of the recorded investment in a loan that exceeds the fair value of the collateral is charged-off against the allowance for loan losses in lieu of an allocation of a specific allowance amount when such an amount has been identified definitively as uncollectible. Bank-Owned Life Insurance Bank-owned life insurance policies are reflected on the consolidated balance sheets at cash surrender value. Changes in the net cash surrender value of the policies, as well as insurance proceeds received, are reflected in non-interest income on the consolidated statements of operations and are not subject to income taxes. Foreclosed and Repossessed Assets Assets acquired through, or in lieu of, loan foreclosure or repossession are held for sale and are initially recorded at the lower of the investment in the loan or fair value less estimated costs to sell at the date of foreclosure or repossession, establishing a new cost basis. Subsequently, valuations are periodically performed by management and the assets are carried at the lower of carrying amount or fair value less estimated costs to sell. Revenue and expenses from operations, changes in the valuation allowance, any direct write-downs and gains or losses on sales are included in other real estate owned expense. Capitalized Servicing Rights Capitalized servicing rights are included in “other assets” in the consolidated balance sheet. Servicing assets are initially recognized as separate assets at fair value when rights are acquired through purchase or through sale of financial assets with servicing retained. The Company's servicing rights accounted for under the fair value method are carried on the consolidated balance sheet at fair value with changes in fair value recorded in income in the period in which the change occurs. Changes in the fair value of servicing rights are primarily due to changes in valuation inputs, assumptions, and the collection and realization of expected cash flows. The Company’s servicing rights accounted for under the amortization method are initially recorded at fair value. Under that method, capitalized servicing rights are charged to expense in proportion to and over the period of estimated net servicing income. Fair value of the servicing rights is based on a valuation model that calculates the present value of estimated future net servicing income. The valuation model incorporates assumptions that market participants would use in estimating future net servicing income, such as the cost to service, the discount rate, prepayment speeds and default rates and losses. Impairment is recognized through a valuation allowance for an individual tranche, to the extent that fair value is less than the capitalized amount for the tranches. If the Company later determines that all or a portion of the impairment no longer exists for a particular tranche, a reduction of the allowance may be recorded as an increase to income. Premises and Equipment Land is carried at cost. Buildings, improvements, and equipment are carried at cost, less accumulated depreciation and amortization computed on the straight-line method over the estimated useful lives of the assets. Leasehold improvements are amortized over the initial term of the lease, plus optional terms if certain conditions are met. Goodwill Goodwill represents the excess of the purchase price over the fair value of the net assets acquired in a business combination. Goodwill is assessed annually for impairment, and more frequently if events or changes in circumstances indicate that there may be an impairment. Adverse changes in the economic environment, declining operations, unanticipated competition, loss of key personnel, or other factors could result in a decline in the implied fair value of goodwill. If the implied fair value of goodwill is less than the carrying amount, a loss would be recognized in other non-interest expense to reduce the carrying amount to the implied fair value of goodwill. The Company performs an annual qualitative assessment of whether it is more likely than not that the reporting unit's fair value is less than its carrying amount. If the results of the qualitative assessment suggest goodwill impairment, the Company would perform a two-step impairment test through the application of various quantitative valuation methodologies. Step 1, used to identify instances of potential impairment, compares the fair value of the reporting unit with its carrying amount, including goodwill. If the carrying amount, including goodwill, exceeds its fair value, the second step of the goodwill impairment analysis is performed to measure the amount of impairment loss, if any. Step 2 of the goodwill impairment analysis compares the implied fair value of reporting unit goodwill with the carrying amount of that goodwill. If the carrying amount of goodwill for the reporting unit exceeds the implied fair value of the reporting unit’s goodwill, an impairment loss is recognized in an amount equal to that excess. Subsequent reversals of goodwill impairment are prohibited. The Company may elect to bypass the qualitative assessment and begin with Step 1. Other Intangibles Intangible assets are acquired assets that lack physical substance but can be distinguished from goodwill because of contractual or other legal rights or the asset is capable of being sold or exchanged either on its own or in combination with a related contract, asset or liability. The fair values of these assets are generally determined based on appraisals and are subsequently amortized on a straight-line basis or an accelerated basis over their estimated lives. Management assesses the recoverability of these intangible assets whenever events or changes in circumstances indicate that their carrying value may not be recoverable. If the carrying amount exceeds fair value, an impairment charge is recorded to income. Transfers of Financial Assets Transfers of an entire financial asset, group of entire financial assets, or a participating interest in an entire financial asset are accounted for as sales when control over the assets has been surrendered. Control over transferred assets is deemed to be surrendered when (1) the assets have been isolated from the Company, (2) the transferee obtains the right to pledge or exchange the transferred assets, and (3) the Company does not maintain effective control over the transferred assets. Income Taxes Deferred income taxes are recognized for the tax consequences of temporary differences by applying enacted statutory tax rates applicable for future years to differences between financial statement and tax bases of existing assets and liabilities. The effect of tax rate changes on deferred taxes is recognized in the income tax provision in the period that includes the enactment date. A tax valuation allowance is established, as needed, to reduce net deferred tax assets to the amount expected to be realized. In the event it becomes more likely than not that some or all of the deferred tax asset allowances will not be needed, the valuation allowance will be adjusted. In the ordinary course of business there is inherent uncertainty in quantifying the Company’s income tax positions. Income tax positions and recorded tax benefits are based upon management’s evaluation of the facts, circumstances, and information available at the reporting date. For those tax positions where it is more likely than not that a tax benefit will be sustained, we have determined the amount of the tax benefit to be recognized by estimating the largest amount of tax benefit that has a greater than 50% likelihood of being realized upon ultimate settlement with a taxing authority that has full knowledge of all relevant information. For those income tax positions where it is not more-likely-than-not that a tax benefit will be sustained, no tax benefit has been recognized in the financial statements. Where applicable, associated interest and penalties has also been recognized. We recognize accrued interest and penalties related to unrecognized tax benefits as a component of income tax expense. Insurance Commissions Commission revenue is recognized as of the effective date of the insurance policy or the date the customer is billed, whichever is later, net of return commissions related to policy cancellations. In addition, the Company may receive additional performance commissions based on achieving certain sales and loss experience measures. Such commissions are recognized when determinable, which is generally when such commissions are received or when the Company receives data from the insurance companies that allows the reasonable estimation of these amounts. Advertising Costs Advertising costs are expensed as incurred. Stock-Based Compensation The Company measures and recognizes compensation cost relating to share-based payment transactions based on the grant-date fair value of the equity instruments issued. The fair value of restricted stock is recorded as unearned compensation. The deferred expense is amortized to compensation expense based on one of several permitted attribution methods over the longer of the required service period or performance period. For performance-based restricted stock awards, the Company estimates the degree to which performance conditions will be met to determine the number of shares that will vest and the related compensation expense. Compensation expense is adjusted in the period such estimates change. Income tax benefits and/or tax deficiencies related to stock compensation determined as the difference between compensation cost recognized for financial reporting purposes and the deduction for tax, are recognized in the income statement as income tax expense or benefit in the period in which they occur. Earnings per Common Share Basic earnings per share represents income available to common stockholders divided by the weighted-average number of common shares outstanding during the period. If rights to dividends on unvested options/awards are non-forfeitable, these unvested awards/options are considered outstanding in the computation of basic earnings per share. Diluted earnings per share reflects additional common shares that would have been outstanding if dilutive potential common shares had been issued, as well as any adjustments to income that would result from the assumed issuance. Potential common shares that may be issued by the Company relate to outstanding stock options and restricted stock awards and are determined using the treasury stock method. Treasury shares are not deemed outstanding for earnings per share calculations. Wealth Management Wealth management assets held in a fiduciary or agent capacity are not included in the accompanying consolidated balance sheets because they are not assets of the Company. Fees earned from wealth management activities are amortized over the period of the service performed. Derivative Instruments and Hedging Activities The Company enters into interest rate swap agreements as part of the Company’s interest rate risk management strategy for certain assets and liabilities and not for speculative purposes. Based on the Company’s intended use for the interest rate swap at inception, the Company designates the derivative as either an economic hedge of an asset or liability or a hedging instrument subject to the hedge accounting provisions of ASC 815, “Derivatives and Hedging.” Interest rate swaps designated as economic hedges are recorded at fair value within other assets or liabilities. Changes in the fair value of these derivatives are recorded directly through earnings. For interest rate swaps that management intends to apply the hedge accounting provisions of ASC 815, the Company formally documents at inception all relationships between hedging instruments and hedged items, as well as its risk management objectives and strategies for undertaking the various hedges. Additionally, the Company uses dollar offset or regression analysis at the hedge’s inception and for each reporting period thereafter, to assess whether the derivative used in its hedging transaction is expected to be and has been highly effective in offsetting changes in the fair value or cash flows of the hedged item. The Company discontinues hedge accounting when it is determined that a derivative is not expected to be or has ceased to be highly effective as a hedge, and then reflects changes in fair value of the derivative in earnings after termination of the hedge relationship. The Company has characterized its interest rate swaps that qualify under ASC 815 hedge accounting as cash flow hedges. Cash flow hedges are used to minimize the variability in cash flows of assets or liabilities, or forecasted transactions caused by interest rate fluctuations, and are recorded at fair value in other assets or liabilities within the Company’s balance sheets. Changes in the fair value of these cash flow hedges are initially recorded in accumulated other comprehensive income and subsequently reclassified into earnings when the forecasted transaction affects earnings. Any hedge ineffectiveness assessed as part of the Company’s quarterly analysis is recorded directly to earnings. The Company enters into interest rate lock commitments with borrowers, and forward commitments to sell loans or to-be-announced mortgage-backed bonds to investors to hedge against the inherent interest rate and pricing risk associated with selling loans. The interest rate lock commitments generally terminate once the loan

ACQUISITIONS

ACQUISITIONS	12 Months Ended
	Dec. 31, 2016
Business Combinations [Abstract]
ACQUISITIONS	ACQUISITIONS 44 Business Capital On April 29, 2016, the Company acquired and assumed the business model, certain assets, and certain liabilities of 44 Business Capital LLC, along with certain loans and other assets of Parke Bank’s (“Parke”) SBA 7(a) loan program operations. 44 Business Capital was a joint venture of Parke ( 51% ) and a management group ( 49% ), 44 Amigos LLC, located in Blue Bell, Pennsylvania. 44 Business Capital was engaged in originating, servicing, and selling SBA loans using Parke’s SBA PLP preferred lender license. The transaction includes acquiring assets, key people, systems, and processes necessary for a market participant to run operations as a business. In accordance with ASC 805-10-55, the transaction was recorded as a business combination, resulting in acquisition accounting in which all assets acquired and liabilities are assumed at fair value. The loans acquired by the Bank were the unguaranteed portions of SBA loans of which $35.6 million were recorded as commercial real estate and $1.2 million were recorded as commercial & industrial. Servicing rights on a notional loan balance of $148 million were also acquired. The Company expects the acquisition to expand its SBA lending program on a super-regional and national basis with the intent of selling many of these loans on the secondary market. It expands and diversifies the Company's fee revenue sources. Additionally, the acquisition of 44 Business Capital expands the Company’s product lines, creates cross-selling opportunities, and adds niche lending to its portfolio. 44 Business Capital will operate as a direct small business lending division reporting up through the Company’s established Specialty Lending line of business. The following table provides a summary of the assets acquired and liabilities assumed and the associated fair value adjustments as recorded by the Company at acquisition: Fair Value As Recorded by (in thousands) As Acquired Adjustments the Company Consideration paid: Company common stock issued to certain 44 Business Capital shareholders (44,840 shares) $ 1,217 Cash paid to 44 Business Capital shareholders and Parke 55,649 Total consideration paid $ 56,866 Recognized amounts of identifiable assets acquired and (liabilities) assumed, at fair value: Cash and short-term investments $ 107 $ — $ 107 Loans 42,627 (5,400 ) (a) 37,227 Premises and equipment 69 (36 ) (b) 33 Other assets 3,076 639 (c) 3,715 Other liabilities (108 ) — (108 ) Total identifiable net assets $ 45,771 $ (4,797 ) $ 40,974 Goodwill $ 15,892 ________________________________ Explanation of Certain Fair Value Adjustments (a) The adjustment represents the write down of the book value of loans to their estimated fair value based on current interest rates and expected cash flows, which includes an estimate of expected loan loss inherent in the portfolio. Loans with evidence of credit deterioration at acquisition are accounted for under ASC 310-30 and had a book value of $6.3 million and have a fair value $2.9 million . Non-impaired loans accounted for under ASC 310-10 had a book value of $36.4 million and have a fair value of $34.3 million . ASC 310-30 loans have a $708 thousand fair value adjustment discount that is accretable in earnings over an average estimated six -year life using the effective yield as determined on the date of acquisition. The effective yield is periodically adjusted for changes in expected cash flows. ASC 310-10 loans have a $2.1 million fair value adjustment discount that is amortized into income over the remaining term of the loans using the effective interest method. (b) The fair value of the equipment was assumed to approximate the net carrying value based on overall condition and age. The adjustment represents the immediate expensing of equipment not meeting the thresholds for capitalization in accordance with Company policy. The recorded amount will be depreciated over the remaining estimated economic lives of the assets. (c) The adjustment represents the fair value write up of book value of the loan servicing right asset to its estimated fair value based on current interest rates and expected cash flows, which includes an estimate of cost of service and conditional prepayment rates applied to the underlying unpaid loan pool balance over the remaining life of the loans. The balance includes accrued interest of $221 thousand . The fair values for loans acquired were estimated using cash flow projections based on the remaining maturity and repricing terms. Cash flows were adjusted by estimating future credit losses and the rate of prepayments. Projected monthly cash flows were then discounted to present value using a risk-adjusted market rate for similar loans. There was no carryover of the seller’s allowance for credit losses associated with the loans that were acquired in the acquisition as the loans were initially recorded at fair value. Information about the acquired loan portfolio subject to ASC 310-30 as of April 29, 2016 is, as follows (in thousands): ASC 310-30 Loans Gross contractual receivable amounts at acquisition $ 6,265 Contractual cash flows not expected to be collected (nonaccretable discount) (2,623 ) Expected cash flows at acquisition 3,642 Interest component of expected cash flows (accretable discount) (708 ) Fair value of acquired loans $ 2,934 Capitalized goodwill, which is not amortized for book purposes, is deductible for tax purposes. Direct acquisition and integration costs of the 44 Business Capital acquisition were expensed as incurred, and totaled $454 thousand during the twelve months ending December 31, 2016 and $285 thousand for the same period of 2015. Ronald N. Lazzaro, P.C. On December 2, 2016, the Company acquired and assumed certain assets and liabilities, as well as the operations, of Ronald N. Lazzaro, P.C. (“RNL”). RNL was an independent financial planning and investment services firm based in Rutland, Vermont. The operations and assets acquired from RNL have been renamed RNL & Associates, a division of BerkshireBanc Investment Services, reflecting RNL & Associates' new position as a key component of Berkshire Bank's financial planning and investment services platform. The Company expects the acquisition to expand its market share of wealth management services in its footprint, while creating a recurring source of fee revenue. The transaction includes acquiring assets, key people, and processes necessary for a market participant to run operations as a business. In accordance with ASC 805-10-55, the transaction was recorded as a business combination, resulting in acquisition accounting in which all assets acquired and liabilities are assumed at fair value. The Company agreed to pay $10.2 million , including $3.4 million in future contingent consideration comprised of cash and stock. RNL met all of the objectives for the contingent consideration and the payments were fully accrued as of the acquisition date. The acquired customer relationships (or customer account base) of RNL resulted in the capitalization of a $4.7 million customer relationship intangible. The asset will be amortized over the estimated useful life of the underlying customer accounts ( 10 years). The Company expects this acquisition to expand the market penetration of its wealth management and investment services, with a primary geographic focus on Vermont and the northeastern United States. Capitalized goodwill of $5.5 million , which is not amortized for book purposes, is deductible for tax purposes. Direct acquisition and integration costs of the RNL acquisition were expensed as incurred, and totaled $287 thousand during the twelve months ending December 31, 2016 and none for the same period of 2015. First Choice Bank At the close of business on December 2, 2016, the Company completed the acquisition of First Choice Bank and the merger of First Choice Bank into Berkshire Bank. As a result of this merger, First Choice Loan Services Inc. became a wholly-owned operating subsidiary of Berkshire Bank. With this acquisition, the Company added eight bank branches in the Princeton, New Jersey and Greater Philadelphia areas, as well as First Choice Loan Services, a best in class mortgage banking operations, which originates loans across a nation a l platform. The Company expects its expanded branch and lending footprint to yield increased earnings accretion. On acquisition date, First Choice Bank had 3.369 million outstanding common shares. First Choice Bank common shareholders received 1.945 million of the Company’s common shares based on an exchange ratio of 0.5773 shares of the Company’s common stock for each First Choice Bank share. On November 22, 2016, First Choice Bank held a special meeting of its preferred stockholders, who voted to approve the merger of First Choice Bank with and into Berkshire Bank. This vote also determined not to classify the merger as a liquidation event, as defined in First Choice Bank’s certificate of incorporation and the applicable certificates of designation for the series of convertible preferred stock. Accordingly, each outstanding share of First Choice Bank preferred stock was converted into the right to receive such number of Berkshire Hills common stock equal to the number of shares of First Choice Bank common stock issuable upon the conversion of the First Choice Bank preferred stock, multiplied by 0.5773 . As of the closing date, 51,000 shares of First Choice Bank preferred stock were outstanding in the following series: • 7,500 shares of Series A Preferred Stock, with each share convertible into 57.7300 shares of Berkshire Hills common stock (and cash in lieu of fractional shares); • 15,000 shares of Series B Preferred Stock, with each share convertible into 57.7300 shares of Berkshire Hills common stock (and cash in lieu of fractional shares); • 6,000 shares of Series C Preferred Stock, with each share convertible into 50.0694 shares of Berkshire Hills common stock (and cash in lieu of fractional shares); • 10,000 shares of Series D Preferred Stock, with each share convertible into 41.2357 shares of Berkshire Hills common stock (and cash in lieu of fractional shares); and • 12,500 shares of Series E Preferred Stock, with each share convertible into 36.3082 shares of Berkshire Hills common stock (and cash in lieu of fractional shares). The Company issued 4.410 million total shares of common stock, valued at $34.25 per share based on the December 2, 2016 closing price. This resulted in a consideration value of $151.0 million . Pursuant to the Merger Agreement, all outstanding options and warrants to purchase First Choice Bank common stock, whether or not vested, were terminated with a payment by First Choice Bank to the holder of the option or warrant. The payment was determined as the amount of cash equal to the excess, if any, of $16.00 over the applicable per share price of the option or warrant multiplied by the number of shares of First Choice Bank common stock that the holder could have purchased with the option or warrant if the holder had exercised the option or warrant immediately prior to the date of the merger. The following table provides a summary of the assets acquired and liabilities assumed and the associated fair value adjustments as recorded by the Company at acquisition: Fair Value As Recorded by (in thousands) As Acquired Adjustments the Company Consideration Paid: Company common stock issued to First Choice Bank common and preferred shareholders $ 151,048 Total consideration paid $ 151,048 Recognized amounts of identifiable assets acquired and (liabilities) assumed, at fair value: Cash and short-term investments $ 5,935 $ — $ 5,935 Investment securities 447,960 (6,009 ) (a) 441,951 Loans held for sale 112,669 — 112,669 Loans, net 437,832 (13,061 ) (b) 424,771 Premises and equipment 6,354 (878 ) (c) 5,476 Core deposit intangibles — 7,690 (d) 7,690 Deferred tax assets, net 9,626 8,175 (e) 17,801 Other assets 42,200 (60 ) (f) 42,140 Deposits (889,993 ) (2,804 ) (g) (892,797 ) Borrowings (51,796 ) 68 (h) (51,728 ) Other liabilities (15,019 ) (5,877 ) (i) (20,896 ) Total identifiable net assets $ 105,768 $ (12,756 ) $ 93,012 Goodwill $ 58,036 ________________________________ Explanation of Certain Fair Value Adjustments (a) The adjustment represents the write down of the book value of securities to their estimated fair value based on estimates at the date of acquisition. (b) The adjustment represents the write-off of the balance of $14.7 million in allowance for loan and lease losses and the write down of the book value of loans to their estimated fair value based on interest rates and expected cash flows as of the acquisition date, which includes an estimate of expected loan loss inherent in the portfolio. Loans with evidence of credit deterioration at acquisition are accounted for under ASC 310-30 and had a book value of $63.8 million and had a fair value of $36.4 million . Non-impaired loans accounted for under ASC 310-20 had a book value of $388.7 million and have a fair value of $388.3 million . ASC 310-30 loans have a $5.4 million fair value adjustment that is accretable in earnings over an estimated three -year life using the effective yield as determined on the date of acquisition. The effective yield is periodically adjusted for changes in expected flows. ASC 310-20 loans have a $5.8 million fair value adjustment premium that is amortized into expense over the remaining term of the loans using the effective interest method, or a straight-line method if the loan is a revolving credit facility. (c) The amount represents the adjustment of the book value of furniture, fixtures, and equipment, to their estimated fair value and the immediate expensing of equipment not meeting the thresholds for capitalization in accordance with Company policy. The adjustments will be depreciated over the remaining estimated economic lives of the assets. (d) The adjustment represents the value of the core deposit base assumed in the acquisition. The core deposit asset was recorded as an identifiable intangible asset and will be amortized over the estimated useful life of the deposit base ( 10 years). (e) Represents net deferred tax assets resulting from the fair value adjustments related to the acquired assets and liabilities, identifiable intangibles, and other purchase accounting adjustments. (f) The amount consists of a $0.5 million write-off of goodwill and intangible assets from a prior First Choice Bank acquisition, a $0.1 million fair value adjustment to write-down other real estate owned based on market report data, and a $0.1 million write-off of prepaid assets due to obsolescence. These adjustments are not accretable into earnings in the statement of income. (g) The adjustment is necessary because the weighted average interest rate of deposits exceeded the cost of similar funding at the time of acquisition. The amount will be amortized over the estimated useful life of one year. (h) Adjusts borrowings to their estimated fair value, which is calculated based on the expected future cash flow of the borrowings. (i) Adjusts the book value of other liabilities to their estimated fair value at the acquisition date. The adjustment consists of a $4.0 million increase for the fair value of the above/below market leases, a $3.4 million establishment of a reserve on certain acquired loans determined to have specific risk at the time of acquisition, a $0.9 million net decrease related to non-level leases, and a $0.6 million write-off of deferred revenue. Except for collateral dependent loans with deteriorated credit quality, the fair values for loans acquired were estimated using cash flow projections based on the remaining maturity and repricing terms. Cash flows were adjusted by estimating future credit losses and the rate of prepayments. Projected monthly cash flows were then discounted to present value using a risk-adjusted market rate for similar loans. For collateral dependent loans with deteriorated credit quality, the Company estimated fair value by analyzing the value of the underlying collateral of the loans, assuming the fair values of the loans were derived from the eventual sale of the collateral. Those values were discounted using market derived rates of return, with consideration given to the period of time and costs associated with the foreclosure and disposition of the collateral. There was no carryover of the seller’s allowance for credit losses associated with the loans acquired, as the loans were initially recorded at fair value. Information about the First Choice Bank acquired loan portfolio subject to ASC 310-30 as of December 2, 2016 is as follows (in thousands): ASC 310-30 Loans Gross contractual receivable amounts at acquisition $ 63,820 Contractual cash flows not expected to be collected (nonaccretable discount) (21,926 ) Expected cash flows at acquisition 41,894 Interest component of expected cash flows (accretable discount) (5,417 ) Fair value of acquired loans $ 36,477 Capitalized goodwill, which is not amortized for book purposes, is not deductible for tax purposes. Direct acquisition and integration costs of the First Choice Bank acquisition were expensed as incurred, and totaled $11.9 million during the twelve months ending December 31, 2016 and there were none for the same period of 2015. Pro Forma Information (unaudited) The following table presents selected unaudited pro forma financial information reflecting the acquisitions of First Choice Bank, RNL, and 44 Business Capital assuming the acquisitions were completed as of January 1, 2015. The unaudited pro forma financial information includes adjustments for scheduled amortization and accretion of fair value adjustments recorded at the acquisitions. These adjustments would have been different if they had been recorded on January 1, 2015, and they do not include the impact of prepayments. The unaudited pro forma financial information is presented for illustrative purposes only and is not necessarily indicative of the combined financial results of the Company and the acquisitions had the transactions actually been completed at the beginning of the periods presented, nor does it indicate future results for any other interim or full-year period. Pro forma basic and diluted earnings per common share were calculated using Berkshire’s actual weighted-average shares outstanding for the periods presented plus the 45 thousand shares and 4.4 million shares issued as a result of the 44 Business Capital and First Choice Bank acquisitions, respectively. The unaudited pro forma information is based on the actual financial statements of Berkshire and the acquired businesses for the periods shown until the dates of acquisition, at which time the acquired business’ operations became included in Berkshire’s financial statements. For the period from the date of acquisition through December 31, 2016, 44 Business Capital's net revenue was $5.5 million and net income was $1.3 million which includes $454 thousand of acquisition expenses. For whole-bank acquisitions, the Company has determined it is impractical to report the amounts of revenue and earnings of each entity since acquisition date. Due to the integration of their operations with those of the organization, the Company does not record revenue and earnings separately. The revenue and earnings of First Choice Bank’s operations are included in the Consolidated Statement of Income. The unaudited pro forma information, for the twelve months ended December 31, 2016 and 2015, set forth below reflects adjustments related to (a) amortization and accretion of purchase accounting fair value adjustments; (b) amortization of core deposit and customer relationship intangibles; and (c) an estimated tax rate of 40 percent. Direct acquisition expenses incurred by the Company during 2016, as noted above, are reversed for the purposes of this unaudited pro forma information. Furthermore, the unaudited pro forma information does not reflect management’s estimate of any revenue-enhancing or anticipated cost-savings that could occur as a result of the acquisition. Information in the following table is shown in thousands, except earnings per share: Pro Forma (unaudited) 2016 2015 Net interest income $ 259,494 $ 249,533 Non-interest income 137,395 125,855 Net income 79,011 60,852 Pro forma earnings per share: Basic $ 2.25 $ 1.85 Diluted $ 2.24 $ 1.84

CASH AND CASH EQUIVALENTS

CASH AND CASH EQUIVALENTS	12 Months Ended
	Dec. 31, 2016
Cash and Cash Equivalents [Abstract]
CASH AND CASH EQUIVALENTS	CASH AND CASH EQUIVALENTS Cash and cash equivalents include cash on hand, amounts due from banks, and short-term investments with original maturities of 90 days or less. Short-term investments included $0.9 million and $16.1 million pledged as collateral support for derivative financial contracts at year-end 2016 and 2015, respectively. The Federal Reserve Bank requires the Bank to maintain certain reserve requirements of vault cash and/or deposits. The reserve requirement, included in cash and equivalents, was $17.0 million and $6.4 million at year-end 2016 and 2015, respectively.

TRADING SECURITY

TRADING SECURITY	12 Months Ended
	Dec. 31, 2016
Trading Securities [Abstract]
TRADING SECURITY	TRADING SECURITY The Company holds a tax advantaged economic development bond that is being accounted for at fair value. The security had an amortized cost of $11.4 million and $12.0 million and a fair value of $13.2 million and $14.2 million at year-end 2016 and 2015, respectively. Unrealized (losses) gains recorded through income on this security totaled ($0.4) million , ($0.2) million , and $0.6 million for 2016, 2015, and 2014, respectively. As discussed further in Note 16 - Derivative Instruments and Hedging Activities, the Company has entered into a swap contract to swap-out the fixed rate of the security in exchange for a variable rate. The Company does not purchase securities with the intent of selling them in the near term, and there are no other securities in the trading portfolio at year-end 2016 and 2015.

SECURITIES

SECURITIES	12 Months Ended
	Dec. 31, 2016
Investments, Debt and Equity Securities [Abstract]
SECURITIES	SECURITIES The following is a summary of securities available for sale (“AFS”) and securities held to maturity (“HTM”): (In thousands) Amortized Gross Gross Fair Value December 31, 2016 Securities available for sale Debt securities: Municipal bonds and obligations $ 117,910 $ 2,955 $ (1,049 ) $ 119,816 Agency collateralized mortgage obligations 652,680 2,522 (3,291 ) 651,911 Agency mortgage-backed securities 230,308 557 (2,181 ) 228,684 Agency commercial mortgage-backed securities 65,673 229 (1,368 ) 64,534 Corporate bonds 56,320 408 (722 ) 56,006 Trust preferred securities 11,578 368 (59 ) 11,887 Other bonds and obligations 10,979 195 (16 ) 11,158 Total debt securities 1,145,448 7,234 (8,686 ) 1,143,996 Marketable equity securities 47,858 19,296 (1,613 ) 65,541 Total securities available for sale 1,193,306 26,530 (10,299 ) 1,209,537 Securities held to maturity Municipal bonds and obligations 203,463 3,939 (2,416 ) 204,986 Agency collateralized mortgage obligations 75,655 1,281 (411 ) 76,525 Agency mortgage-backed securities 9,102 — (243 ) 8,859 Agency commercial mortgage-backed securities 10,545 — (434 ) 10,111 Tax advantaged economic development bonds 35,278 1,596 — 36,874 Other bonds and obligations 325 — — 325 Total securities held to maturity 334,368 6,816 (3,504 ) 337,680 Total $ 1,527,674 $ 33,346 $ (13,803 ) $ 1,547,217 December 31, 2015 Securities available for sale Debt securities: Municipal bonds and obligations $ 99,922 $ 4,763 $ (124 ) $ 104,561 Agency collateralized mortgage obligations 833,633 4,957 (5,554 ) 833,036 Agency mortgage-backed securities 127,274 542 (987 ) 126,829 Agency commercial mortgage-backed securities — — — — Corporate bonds 42,849 — (1,826 ) 41,023 Trust preferred securities 11,719 182 (1 ) 11,900 Other bonds and obligations 3,175 — (34 ) 3,141 Total debt securities 1,118,572 10,444 (8,526 ) 1,120,490 Marketable equity securities 30,522 5,331 (1,886 ) 33,967 Total securities available for sale 1,149,094 15,775 (10,412 ) 1,154,457 Securities held to maturity Municipal bonds and obligations 94,642 3,359 (34 ) 97,967 Agency collateralized mortgage-backed securities 68 3 — 71 Tax advantaged economic development bonds 36,613 1,924 — 38,537 Other bonds and obligations 329 — — 329 Total securities held to maturity 131,652 5,286 (34 ) 136,904 Total $ 1,280,746 $ 21,061 $ (10,446 ) $ 1,291,361 At year-end 2016 and 2015, accumulated net unrealized gains on AFS securities included in accumulated other comprehensive income were $16.2 million and $5.3 million , respectively. At year-end 2016 and 2015, accumulated net unrealized gains on HTM securities included in accumulated other comprehensive income were $9.0 million and $954 thousand respectively. The year-end 2016 and 2015 related income tax benefit of $9.6 million and $2.4 million , respectively, was also included in accumulated other comprehensive income. The amortized cost and estimated fair value of available for sale (AFS) and held to maturity (HTM) securities, segregated by contractual maturity at year-end 2016 are presented below. Expected maturities may differ from contractual maturities because issuers may have the right to call or prepay obligations. Mortgage-backed securities are shown in total, as their maturities are highly variable. Equity securities have no maturity and are also shown in total. Available for sale Held to maturity (In thousands) Amortized Fair Amortized Fair Within 1 year $ — $ — $ 1,803 $ 1,806 Over 1 year to 5 years 25,697 26,042 19,674 20,494 Over 5 years to 10 years 48,637 49,397 17,502 17,968 Over 10 years 122,453 123,428 200,087 201,917 Total bonds and obligations 196,787 198,867 239,066 242,185 Marketable equity securities 47,858 65,541 — — Mortgage-backed securities 948,661 945,129 95,302 95,495 Total $ 1,193,306 $ 1,209,537 $ 334,368 $ 337,680 At year-end 2016 and 2015, the Company had pledged securities as collateral for certain municipal deposits and for interest rate swaps with certain counterparties. The total amortized cost and fair values of these pledged securities follows. Additionally, there is a blanket lien on certain securities to collateralize borrowings from the FHLBB, as discussed further in Note 12 - Borrowed Funds. 2016 2015 (In thousands) Amortized Fair Amortized Fair Securities pledged to swap counterparties $ 51,292 $ 51,290 $ 27,687 $ 27,626 Securities pledged for municipal deposits 147,950 148,435 134,865 135,755 Total $ 199,242 $ 199,725 $ 162,552 $ 163,381 Proceeds from the sale of AFS securities in 2016, 2015, and 2014 were $421.8 million , $41.2 million , and $143.5 million , respectively. The components of net realized gains and losses on the sale of AFS securities are as follows. These amounts were reclassified out of accumulated other comprehensive loss and into earnings: (In thousands) 2016 2015 2014 Gross realized gains $ 2,762 $ 4,567 $ 2,601 Gross realized losses (3,313 ) (2,457 ) (2,119 ) Net realized (losses)/gains $ (551 ) $ 2,110 $ 482 Securities with unrealized losses, segregated by the duration of their continuous unrealized loss positions, are summarized as follows: Less Than Twelve Months Over Twelve Months Total (In thousands) Gross Fair Gross Fair Gross Fair December 31, 2016 Securities available for sale Debt securities: Municipal bonds and obligations $ 1,049 $ 13,839 $ — $ — $ 1,049 $ 13,839 Agency collateralized mortgage obligations 3,291 319,448 — — 3,291 319,448 Agency mortgage-backed securities 2,153 130,766 28 2,061 2,181 132,827 Agency commercial mortgage-back securities 1,368 44,860 — — 1,368 44,860 Corporate bonds 11 4,780 711 19,655 722 24,435 Trust preferred securities — — 59 1,204 59 1,204 Other bonds and obligations 15 3,014 1 27 16 3,041 Total debt securities 7,887 516,707 799 22,947 8,686 539,654 Marketable equity securities 157 6,600 1,456 5,927 1,613 12,527 Total securities available for sale $ 8,044 $ 523,307 $ 2,255 $ 28,874 $ 10,299 $ 552,181 Securities held to maturity Municipal bonds and obligations 2,416 69,308 — — 2,416 69,308 Agency collateralized mortgage obligations 411 14,724 — — 411 14,724 Agency mortgage-backed securities 243 8,859 — — 243 8,859 Agency commercial mortgage-back securities 434 10,111 — — 434 10,111 Total securities held to maturity 3,504 103,002 — — 3,504 103,002 Total $ 11,548 $ 626,309 $ 2,255 $ 28,874 $ 13,803 $ 655,183 December 31, 2015 Securities available for sale Debt securities: Municipal bonds and obligations $ 9 $ 1,587 $ 115 $ 3,400 $ 124 $ 4,987 Agency collateralized mortgage obligations 2,958 304,907 2,596 136,988 5,554 441,895 Agency mortgage-backed securities 306 34,543 681 35,522 987 70,065 Corporate bonds 30 6,934 1,796 21,587 1,826 28,521 Trust preferred securities 1 1,269 — — 1 1,269 Other bonds and obligations — 108 34 3,032 34 3,140 Total debt securities 3,304 349,348 5,222 200,529 8,526 549,877 Marketable equity securities 534 2,908 1,352 5,729 1,886 8,637 Total securities available for sale $ 3,838 $ 352,256 $ 6,574 $ 206,258 $ 10,412 $ 558,514 Securities held to maturity Municipal bonds and obligations — — 34 2,143 34 2,143 Total securities held to maturity — — 34 2,143 34 2,143 Total $ 3,838 $ 352,256 $ 6,608 $ 208,401 $ 10,446 $ 560,657 Debt Securities The Company expects to recover its amortized cost basis on all debt securities in its AFS and HTM portfolios. Furthermore, the Company does not intend to sell nor does it anticipate that it will be required to sell any of its securities in an unrealized loss position as of December 31, 2016, prior to this recovery. The Company’s ability and intent to hold these securities until recovery is supported by the Company’s strong capital and liquidity positions as well as its historical low portfolio turnover. The following summarizes, by investment security type, the basis for the conclusion that the debt securities in an unrealized loss position within the Company’s AFS and HTM portfolios did not maintain other-than-temporary impairment ("OTTI") at year-end 2016: AFS municipal bonds and obligations At year-end 2016, 16 of the 271 securities in the Company’s portfolio of AFS municipal bonds and obligations were in unrealized loss positions. Aggregate unrealized losses represented 7.1% of the amortized cost of securities in unrealized loss positions. The Company continually monitors the municipal bond sector of the market carefully and periodically evaluates the appropriate level of exposure to the market. At this time, the Company feels that the bonds in this portfolio carry minimal risk of default and that the Company is appropriately compensated for that risk. The bonds are investment grade rated, and there were no material underlying credit downgrades during 2016. All securities are performing. AFS collateralized mortgage obligations At year-end 2016, 71 of the 218 securities in the Company’s portfolio of AFS collateralized mortgage obligations were in unrealized loss positions. Aggregate unrealized losses represented 1.0% of the amortized cost of securities in unrealized loss positions. The Federal National Mortgage Association ("FNMA"), Federal Home Loan Mortgage Corporation ("FHLMC"), and Government National Mortgage Association ("GNMA") guarantee the contractual cash flows of all of the Company's collateralized residential mortgage obligations. The securities are investment grade rated, and there were no material underlying credit downgrades during 2016. All securities are performing. AFS mortgage-backed securities At year-end 2016, 52 out of a total of 105 securities in the Company’s portfolio of AFS mortgage-backed securities were in unrealized loss positions. Aggregate unrealized losses represented 2.0% of the amortized cost of securities in unrealized loss positions. The Federal National Mortgage Association (“FNMA”), Federal Home Loan Mortgage Corporation (“FHLMC”), and Government National Mortgage Association (“GNMA”) guarantees the contractual cash flows of the Company’s residential mortgage-backed securities. The securities are investment grade rated and there were no material underlying credit downgrades during 2016. All securities are performing. AFS corporate bonds At year-end 2016, 3 out of 11 securities in the Company’s portfolio of AFS corporate bonds were in an unrealized loss position. The aggregate unrealized loss represents 2.9% of the amortized cost of bonds in unrealized loss positions. The Company reviews the financial strength of these bonds and concluded that the amortized cost remains supported by the expected future cash flows of these securities. At year-end 2016, $0.7 million of the total unrealized losses were attributable to a $17.5 million investment. The Company evaluated these securities, with a Level 2 fair value of $16.8 million , for potential OTTI at December 31, 2016 and determined that OTTI was not evident based on both the Company’s ability and intent to hold the security until the recovery of its remaining amortized cost. AFS trust preferred securities At year-end 2016, 1 out of the 3 securities in the Company’s portfolio of AFS trust preferred securities was in an unrealized loss position. Aggregate unrealized losses represented 4.6% of the amortized cost of the security in an unrealized loss position. The Company’s evaluation of the present value of expected cash flows on this security supports its conclusions about the recoverability of the securities’ amortized cost basis. This security is investment grade rated. The Company reviews the financial strength of all of the single issue trust issuers and has concluded that the amortized cost remains supported by the market value of these securities and they are performing. AFS other bonds and obligations At year-end 2016, 5 of the 9 securities in the Company’s portfolio of other bonds and obligations were in unrealized loss positions. Aggregate unrealized losses represented 0.5% of the amortized cost of securities in unrealized loss positions. The securities are all investment grade rated, and there were no material underlying credit downgrades during 2016. All securities are performing. HTM Municipal bonds and obligations At year-end 2016, 53 of the 199 securities in the Company’s portfolio of other bonds and obligations were in unrealized loss positions. Aggregate unrealized losses represented 3.4% of the amortized cost of securities in unrealized loss positions. The securities are investment grade rated and there were no material underlying credit downgrades during the quarter. All securities are performing. HTM collateralized mortgage obligations At year-end 2016, 1 of the 9 securities in the Company’s portfolio of HTM collateralized mortgage obligations was in an unrealized loss position. Aggregate unrealized losses represented 2.7% of the amortized cost of securities in unrealized loss positions. The Federal National Mortgage Association ("FNMA"). Federal Home Loan Mortgage Corporation ("FHLMC"), and Government National Mortgage Association ("GNMA") guarantee the contractual cash flows of all of the Company's collateralized residential mortgage obligations. The securities are investment grade rated, and there were no material underlying credit downgrades during 2016. All securities are performing. HTM mortgage-backed securities At year-end 2016, 2 out of a total of 2 securities in the Company’s portfolio of HTM mortgage-backed securities were in unrealized loss positions. Aggregate unrealized losses represented 3.5% of the amortized cost of securities in unrealized loss positions. The Federal National Mortgage Association (“FNMA”), Federal Home Loan Mortgage Corporation (“FHLMC”), and Government National Mortgage Association (“GNMA”) guarantees the contractual cash flows of the Company’s residential mortgage-backed securities. The securities are investment grade rated and there were no material underlying credit downgrades during 2016. All securities are performing. Marketable Equity Securities In evaluating its marketable equity securities portfolio for OTTI, the Company considers its ability to more likely than not hold an equity security to recovery. The Company additionally considers other various factors including the length of time and the extent to which the fair value has been less than cost and the financial condition and near term prospects of the issuer. Any OTTI is recognized immediately through earnings. At year-end 2016, 7 out of a total of 27 securities in the Company’s portfolio of marketable equity securities were in an unrealized loss position. The unrealized loss represented 11.4% of the amortized cost of the securities. The Company has the ability and intent to hold the securities until a recovery of their cost basis and does not consider the securities other-than-temporarily impaired at year-end 2016. As new information becomes available in future periods, changes to the Company’s assumptions may be warranted and could lead to a different conclusion regarding the OTTI of these securities.

LOANS

LOANS	12 Months Ended
	Dec. 31, 2016
Receivables [Abstract]
LOANS	LOANS The Company’s loan portfolio is segregated into the following segments: commercial real estate, commercial and industrial, residential mortgage, and consumer. Commercial real estate loans include construction, single and multi-family, and other commercial real estate classes. Commercial and industrial loans include asset based lending loans, lease financing, and other commercial business loans. Residential mortgage loans include classes for 1-4 family owner occupied and construction loans. Consumer loans include home equity, direct and indirect auto and other consumer loan classes. These portfolio segments each have unique risk characteristics that are considered when determining the appropriate level for the allowance for loan losses. A substantial portion of the loan portfolio is secured by real estate in western Massachusetts, southern Vermont, northeastern New York, and in the Bank’s other New England lending areas. The ability of many of the Bank’s borrowers to honor their contracts is dependent, among other things, on the specific economy and real estate markets of these areas. Total loans include business activity loans and acquired loans. Acquired loans are those loans acquired from First Choice Bank, Parke Bank, Firestone Financial Corp., Hampden Bancorp, Inc., the New York branch acquisition, Beacon Federal Bancorp, Inc., The Connecticut Bank and Trust Company, Legacy Bancorp, Inc., and Rome Bancorp, Inc. The following is a summary of total loans: December 31, 2016 December 31, 2015 (In thousands) Business Activities Loans Acquired Loans Total Business Activities Loans Acquired Loans Total Commercial real estate: Construction $ 253,302 $ 34,207 $ 287,509 $ 210,196 $ 43,474 $ 253,670 Single and multi-family 191,819 125,672 317,491 214,823 36,783 251,606 Other commercial real estate 1,481,223 530,215 2,011,438 1,209,008 345,483 1,554,491 Total commercial real estate 1,926,344 690,094 2,616,438 1,634,027 425,740 2,059,767 Commercial and industrial loans: Asset based lending 321,270 — 321,270 331,253 — 331,253 Other commercial and industrial loans 586,832 153,936 740,768 495,979 221,031 717,010 Total commercial and industrial loans 908,102 153,936 1,062,038 827,232 221,031 1,048,263 Total commercial loans 2,834,446 844,030 3,678,476 2,461,259 646,771 3,108,030 Residential mortgages: 1-4 family 1,583,794 297,355 1,881,149 1,454,233 332,747 1,786,980 Construction 11,178 804 11,982 26,704 1,351 28,055 Total residential mortgages 1,594,972 298,159 1,893,131 1,480,937 334,098 1,815,035 Consumer loans: Home equity 313,521 80,279 393,800 307,159 53,446 360,605 Auto and other 478,368 106,012 584,380 311,328 130,238 441,566 Total consumer loans 791,889 186,291 978,180 618,487 183,684 802,171 Total loans $ 5,221,307 $ 1,328,480 $ 6,549,787 $ 4,560,683 $ 1,164,553 $ 5,725,236 Total unamortized net costs and premiums included in the year-end total loans for business activity loans were the following: (In thousands) December 31, 2016 December 31, 2015 Unamortized net loan origination costs $ 21,972 $ 17,448 Unamortized net premium on purchased loans 4,849 4,694 Total unamortized net costs and premiums $ 26,821 $ 22,142 The Company occasionally transfers a portion of its originated commercial loans to participating lending partners. The amounts transferred have been accounted for as sales and are therefore not included in the Company’s accompanying consolidated balance sheets. The Company and its lending partners share proportionally in any gains or losses that may result from a borrower’s lack of compliance with contractual terms of the loan. The Company continues to service the loans, collects cash payments from the borrowers, remits payments (net of servicing fees), and disburses required escrow funds to relevant parties. At year-end 2016 and 2015, the Company was servicing loans for participants totaling $459.3 million and $189.0 million , respectively. In 2016, the Company purchased loans aggregating $190.8 million and sold loans aggregating $307.7 million . In 2015, the Company purchased loans aggregating $124.4 million and sold loans aggregating $121.0 million . Net gains (losses) on sales of loans were $8 million , $6 million , and $4 million for the years 2016, 2015, and 2014, respectively. These amounts are included in Loan Related Income on the Consolidated Statement of Income. Most of the Company’s lending activity occurs within its primary markets in Western Massachusetts, Southern Vermont, and Northeastern New York. Most of the loan portfolio is secured by real estate, including residential mortgages, commercial mortgages, and home equity loans. Year-end loans to operators of non-residential buildings totaled $1.1 billion , or 16.8% , and $0.8 billion , or 14.7% of total loans in 2016 and 2015, respectively. There were no other concentrations of loans related to any single industry in excess of 10% of total loans at year-end 2016 or 2015. At year-end 2016, the Company had pledged loans totaling $100 million to the Federal Reserve Bank of Boston as collateral for certain borrowing arrangements. Also, residential first mortgage loans are subject to a blanket lien for FHLBB advances. See Note 12 - Borrowed Funds. At year-end 2016 and 2015, the Company’s commitments outstanding to related parties totaled $38.7 million and $3.5 million , respectively, and the loans outstanding against these commitments totaled $25.6 million and $2.1 million , respectively. Related parties include directors and executive officers of the Company and its subsidiaries and their respective affiliates in which they have a controlling interest, and immediate family members. For the years 2016 and 2015, all related party loans were performing. The carrying amount of the acquired loans at December 31, 2016 totaled $1.3 billion . A subset of these loans was determined to have evidence of credit deterioration at acquisition date, which is accounted for in accordance with ASC 310-30. These purchased credit-impaired loans presently maintain a carrying value of $46.8 million . These loans are evaluated for impairment through the periodic reforecasting of expected cash flows. Of the $46.8 million , $34.8 million are Commercial Real Estate, $3.4 million are Commercial and Industrial loans, $7.3 million are Residential Mortgages and $1.3 million are Consumer loans. The carrying amount of the acquired loans at December 31, 2015 totaled $1.2 billion . A subset of these loans was determined to have evidence of credit deterioration at acquisition date, which is accounted for in accordance with ASC 310-30. These purchased credit-impaired loans presently maintain a carrying value of $21.4 million . These loans are evaluated for impairment through the periodic reforecasting of expected cash flows. Of the $21.4 million , $15.8 million are Commercial Real Estate, $2.8 million are Commercial and Industrial loans, $2.6 million are Residential Mortgages, and $249 thousand are Consumer loans. The following table summarizes activity in the accretable yield for the acquired loan portfolio that falls under the purview of ASC 310-30, Loans and Debt Securities Acquired with Deteriorated Credit Quality : (In thousands) 2016 2015 Balance at beginning of period $ 6,925 $ 2,541 Acquisitions 6,125 4,777 Reclassification from nonaccretable difference for loans with improved cash flows 2,488 3,640 Changes in expected cash flows that do not affect nonaccretable difference (3,018 ) — Reclassification to TDR (185 ) — Accretion (3,597 ) (4,033 ) Balance at end of period $ 8,738 $ 6,925 The following is a summary of past due loans at December 31, 2016 and 2015: Business Activities Loans (in thousands) 30-59 Days 60-89 Days >90 Days Past Due Total Past Current Total Loans Past Due > December 31, 2016 Commercial real estate: Construction $ — $ — $ — $ — $ 253,302 $ 253,302 $ — Single and multi-family 618 110 624 1,352 190,467 191,819 155 Commercial real estate 481 2,243 4,212 6,936 1,474,287 1,481,223 — Total 1,099 2,353 4,836 8,288 1,918,056 1,926,344 155 Commercial and industrial loans Asset based lending — — — — 321,270 321,270 — Other commercial and industrial loans 3,090 1,301 6,290 10,681 576,151 586,832 5 Total 3,090 1,301 6,290 10,681 897,421 908,102 5 Residential mortgages: 1-4 family 1,393 701 4,179 6,273 1,577,521 1,583,794 1,956 Construction 10 — — 10 11,168 11,178 — Total 1,403 701 4,179 6,283 1,588,689 1,594,972 1,956 Consumer loans: Home equity 99 — 2,981 3,080 310,441 313,521 306 Auto and other 2,483 494 968 3,945 474,423 478,368 16 Total 2,582 494 3,949 7,025 784,864 791,889 322 Total $ 8,174 $ 4,849 $ 19,254 $ 32,277 $ 5,189,030 $ 5,221,307 $ 2,438 Business Activities Loans (in thousands) 30-59 Days 60-89 Days >90 Days Past Due Total Past Current Total Loans Past Due > December 31, 2015 Commercial real estate: Construction $ — $ — $ 58 $ 58 $ 210,138 $ 210,196 $ — Single and multi-family 65 160 70 295 214,528 214,823 — Commercial real estate 1,523 831 3,286 5,640 1,203,368 1,209,008 — Total 1,588 991 3,414 5,993 1,628,034 1,634,027 — Commercial and industrial loans Asset based lending — — — — 331,253 331,253 — Other commercial and industrial loans 1,202 1,105 7,770 10,077 485,902 495,979 146 Total 1,202 1,105 7,770 10,077 817,155 827,232 146 Residential mortgages: 1-4 family 3,537 857 4,304 8,698 1,445,535 1,454,233 2,006 Construction — — — — 26,704 26,704 — Total 3,537 857 4,304 8,698 1,472,239 1,480,937 2,006 Consumer loans: Home equity 563 20 1,658 2,241 304,918 307,159 61 Auto and other 1,230 132 610 1,972 309,356 311,328 59 Total 1,793 152 2,268 4,213 614,274 618,487 120 Total $ 8,120 $ 3,105 $ 17,756 $ 28,981 $ 4,531,702 $ 4,560,683 $ 2,272 Acquired Loans (in thousands) 30-59 Days 60-89 Days >90 Days Past Due Total Past Acquired Total Loans Past Due > December 31, 2016 Commercial real estate: Construction $ — $ — $ — $ — $ 47 $ 34,207 $ — Single and multi-family 2 — 437 439 4,726 125,672 — Commercial real estate 1,555 — 765 2,320 30,047 530,215 — Total 1,557 — 1,202 2,759 34,820 690,094 — Commercial and industrial loans Asset based lending — — — — — — — Other commercial and industrial loans 1,850 15 1,262 3,127 3,369 153,936 24 Total 1,850 15 1,262 3,127 3,369 153,936 24 Residential mortgages: 1-4 family 321 343 2,015 2,679 7,283 297,355 443 Construction — — — — — 804 — Total 321 343 2,015 2,679 7,283 298,159 443 Consumer loans: Home equity 753 — 870 1,623 957 80,279 353 Auto and other 542 314 1,686 2,542 387 106,012 791 Total 1,295 314 2,556 4,165 1,344 186,291 1,144 Total $ 5,023 $ 672 $ 7,035 $ 12,730 $ 46,816 $ 1,328,480 $ 1,611 Acquired Loans (in thousands) 30-59 Days 60-89 Days >90 Days Past Due Total Past Acquired Total Loans Past Due > December 31, 2015 Commercial real estate: Construction $ — $ — $ — $ — $ 1,298 $ 43,474 $ — Single and multi-family — 176 227 403 1,380 36,783 127 Commercial real estate 547 43 1,368 1,958 13,087 345,483 Total 547 219 1,595 2,361 15,765 425,740 127 Commercial and industrial loans: Asset based lending — — — — — — — Other commercial and industrial loans 1,214 505 1,420 3,139 2,775 221,031 785 Total 1,214 505 1,420 3,139 2,775 221,031 785 Residential mortgages: 1-4 family 2,580 311 1,880 4,771 2,572 332,747 212 Construction — — — — — 1,351 — Total 2,580 311 1,880 4,771 2,572 334,098 212 Consumer loans: Home equity 82 277 837 1,196 118 53,446 111 Auto and other 1,491 145 1,081 2,717 132 130,238 187 Total 1,573 422 1,918 3,913 250 183,684 298 Total $ 5,914 $ 1,457 $ 6,813 $ 14,184 $ 21,362 $ 1,164,553 $ 1,422 The following is summary information pertaining to non-accrual loans at year-end 2016 and 2015: December 31, 2016 December 31, 2015 (In thousands) Business Activities Acquired Loans (1) Total Business Activities Acquired Loans (2) Total Commercial real estate: Construction — — — 59 — 59 Single and multi-family 469 437 906 70 100 170 Other commercial real estate 4,212 765 4,977 3,285 1,368 4,653 Total 4,681 1,202 5,883 3,414 1,468 4,882 Commercial and industrial loans: Asset based lending — — — — — — Other commercial and industrial loans 6,285 1,155 7,440 7,624 597 8,221 Total 6,285 1,155 7,440 7,624 597 8,221 Residential mortgages: 1-4 family $ 2,223 $ 1,572 $ 3,795 $ 2,298 $ 1,668 $ 3,966 Construction — — — — — — Total 2,223 1,572 3,795 2,298 1,668 3,966 Consumer loans: Home equity 2,675 517 3,192 1,597 727 2,324 Auto and other 952 895 1,847 551 893 1,444 Total 3,627 1,412 5,039 2,148 1,620 3,768 Total non-accrual loans $ 16,816 $ 5,341 $ 22,157 $ 15,484 $ 5,353 $ 20,837 (1) At year-end 2016, acquired credit impaired loans account for $83 thousand of loans greater than 90 days past due that are not presented in the above table. (2) At year-end 2015, acquired credit impaired loans account for $39 thousand of loans greater than 90 days past due that are not presented in the above table. Loans evaluated for impairment as of December 31, 2016 and 2015 were as follows: Business Activities Loans (In thousands) Commercial Commercial Residential Consumer Total Loans receivable: Balance at end of year Individually evaluated for impairment $ 25,549 $ 5,705 $ 2,775 $ 2,703 $ 36,732 Collectively evaluated 1,900,795 902,397 1,592,197 789,186 5,184,575 Total $ 1,926,344 $ 908,102 $ 1,594,972 $ 791,889 $ 5,221,307 Business Activities Loans (In thousands) Commercial Commercial Residential Consumer Total Loans receivable: Balance at end of year Individually evaluated for impairment $ 11,560 $ 7,191 $ 2,812 $ 1,810 $ 23,373 Collectively evaluated 1,622,467 820,041 1,478,125 616,677 4,537,310 Total $ 1,634,027 $ 827,232 $ 1,480,937 $ 618,487 $ 4,560,683 Acquired Loans (In thousands) Commercial Commercial Residential Consumer Total Loans receivable: Balance at end of year Individually evaluated for impairment $ 4,256 $ 635 $ 308 $ 406 $ 5,605 Purchased credit-impaired loans 34,820 3,369 7,283 1,344 46,816 Collectively evaluated 651,018 149,932 290,568 184,541 1,276,059 Total $ 690,094 $ 153,936 $ 298,159 $ 186,291 $ 1,328,480 Acquired Loans (In thousands) Commercial Commercial Residential Consumer Total Loans receivable: Balance at end of year Individually evaluated for impairment $ 3,749 $ — $ 570 $ 487 $ 4,806 Purchased credit-impaired loans 15,765 2,775 2,572 250 21,362 Collectively evaluated 406,226 218,256 330,956 182,947 1,138,385 Total $ 425,740 $ 221,031 $ 334,098 $ 183,684 $ 1,164,553 The following is a summary of impaired loans at year-end 2016 and 2015 and for the years then ended: Business Activities Loans At December 31, 2016 (In thousands) Recorded Investment Unpaid Principal Related Allowance With no related allowance: Other commercial real estate $ 18,905 $ 18,905 $ — Other commercial and industrial loans 382 382 — Residential mortgages - 1-4 family 2,101 2,101 — Consumer - home equity 1,605 1,605 — With an allowance recorded: Commercial real estate - single and multifamily $ 179 $ 181 $ 2 Other commercial real estate 6,306 6,462 156 Other commercial and industrial loans 5,060 5,324 264 Residential mortgages - 1-4 family 538 674 136 Consumer - home equity 942 1,098 156 Total Commercial real estate $ 25,390 $ 25,548 $ 158 Commercial and industrial 5,442 5,706 264 Residential mortgages 2,639 2,775 136 Consumer 2,547 2,703 156 Total impaired loans $ 36,018 $ 36,732 $ 714 Business Activities Loans At December 31, 2015 (In thousands) Recorded Investment Unpaid Principal Related Allowance With no related allowance: Commercial real estate - construction $ 2,000 $ 2,000 $ — Other commercial real estate 4,613 4,613 — Other commercial and industrial loans 5,828 5,828 — Residential mortgages - 1-4 family 1,181 1,181 — Consumer - home equity 702 702 — Consumer - other 1 1 — With an allowance recorded: Other commercial real estate $ 4,798 $ 4,947 $ 149 Other commercial and industrial loans 1,341 1,362 21 Residential mortgages - 1-4 family 1,479 1,632 153 Consumer - home equity 903 999 96 Consumer - other 101 108 7 Total Commercial real estate $ 11,411 $ 11,560 $ 149 Commercial and industrial 7,169 7,190 21 Residential mortgages 2,660 2,813 153 Consumer 1,707 1,810 103 Total impaired loans $ 22,947 $ 23,373 $ 426 Acquired Loans At December 31, 2016 (In thousands) Recorded Investment Unpaid Principal Related Allowance With no related allowance: Other commercial real estate loans $ 547 $ 547 $ — Residential mortgages - 1-4 family 208 208 — Consumer - home equity — — — Consumer - other — — — With an allowance recorded: Commercial real estate - single and multifamily $ 1,250 $ 1,358 $ 108 Other commercial real estate loans 2,209 2,351 142 Other commercial and industrial loans 576 635 $ 59 Residential mortgages - 1-4 family 89 100 $ 11 Consumer - home equity 292 406 114 Total Commercial real estate $ 4,006 $ 4,256 $ 250 Commercial and industrial 576 635 59 Residential mortgages 297 308 11 Consumer 292 406 114 Total impaired loans $ 5,171 $ 5,605 $ 434 Acquired Loans December 31, 2015 (In thousands) Recorded Investment Unpaid Principal Related Allowance With no related allowance: Other commercial real estate loans $ 1,722 $ 1,722 $ — Residential mortgages - 1-4 family 274 274 — Consumer - home equity 117 117 — Consumer - other 177 177 — With an allowance recorded: Commercial real estate - single and multifamily $ 638 $ 655 $ 17 Other commercial real estate loans 1,964 2,032 68 Residential mortgages - 1-4 family 266 296 $ 30 Consumer - home equity 167 192 25 Total Commercial real estate $ 4,324 $ 4,409 $ 85 Commercial and industrial — — — Residential mortgages 540 570 30 Consumer 461 486 25 Total impaired loans $ 5,325 $ 5,465 $ 140 The following is a summary of the average recorded investment and interest income recognized on impaired loans as of December 31, 2016 and 2015: Business Activities Loans December 31, 2016 December 31, 2015 (in thousands) Average Recorded Cash Basis Interest Average Recorded Cash Basis Interest With no related allowance: Commercial real estate - construction $ — $ — $ 2,245 $ 92 Commercial real estate - single and multifamily 36 1 60 — Other commercial real estate 6,463 1,155 12,487 302 Other commercial and industrial 3,349 131 3,870 177 Residential mortgages - 1-4 family 2,403 91 1,353 38 Consumer-home equity 612 5 442 13 Consumer-other 2 — — — With an allowance recorded: Commercial real estate - single and multifamily 15 6 — — Other commercial real estate 7,576 349 3,214 132 Other commercial and industrial 2,002 225 810 37 Residential mortgages - 1-4 family 682 26 1,704 72 Consumer-home equity 999 35 83 — Consumer - other 103 4 112 4 Total Commercial real estate $ 14,090 $ 1,511 $ 18,006 $ 526 Commercial and industrial 5,351 356 4,680 214 Residential mortgages 3,085 117 3,057 110 Consumer loans 1,716 44 637 17 Total impaired loans $ 24,242 $ 2,028 $ 26,380 $ 867 Acquired Loans December 31, 2016 December 31, 2015 (in thousands) Average Recorded Cash Basis Interest Average Recorded Cash Basis Interest With no related allowance: Commercial real estate - construction $ — $ — $ 445 $ 60 Commercial mortgages - single and multifamily — — 2,014 57 Other commercial real estate 521 20 1,721 37 Commercial business loans 492 9 — — Residential mortgages - 1-4 family 293 12 463 6 Consumer - home equity — — 152 5 Consumer - other 105 1 59 5 With an allowance recorded: Commercial real estate - construction $ — $ — $ — $ — Commercial real estate - single and multifamily 1,064 115 623 33 Other commercial real estate 2,618 165 1,384 96 Residential mortgages - 1-4 family 214 25 304 9 Other commercial and industrial 369 17 31 3 Consumer - home equity — — 195 7 Total Commercial real estate $ 4,203 $ 300 $ 6,187 $ 283 Commercial and industrial 861 26 31 3 Residential mortgages 507 37 767 15 Consumer loans 105 1 406 17 Total impaired loans $ 5,676 $ 364 $ 7,391 $ 318 No additional funds are committed to be advanced in connection with impaired loans. Troubled Debt Restructuring Loans The Company’s loan portfolio also includes certain loans that have been modified in a Troubled Debt Restructuring (TDR), where economic concessions have been granted to borrowers who have experienced or are expected to experience financial difficulties. These concessions typically result from the Company’s loss mitigation activities and could include reductions in the interest rate, payment extensions, forgiveness of principal, forbearance, or other actions. Certain TDRs are classified as nonperforming at the time of restructure and may only be returned to performing status after considering the borrower’s sustained repayment performance for a reasonable period, generally six months . TDRs are evaluated individually for impairment and may result in a specific allowance amount allocated to an individual loan. The following tables include the recorded investment and number of modifications for modified loans identified during the years-ended December 31, 2016, 2015, and 2014 respectively. The tables include the recorded investment in the loans prior to a modification and also the recorded investment in the loans after the loans were restructured. The modifications for the year-ended December 31, 2016 were attributable to interest rate concessions, maturity date extensions, modified payment terms, reamortization, and accelerated maturity. The modifications for the year-ended December 31, 2015 were attributable to interest rate concessions, maturity date extensions, modified payment terms, reamortization, and accelerated maturity. The modifications for the year-ended December 31, 2014 were attributable to interest rate concessions, debt consolidations, and changes to payment terms. Modifications by Class Number of Pre-Modification Post-Modification Troubled Debt Restructurings Commercial - Single and multifamily 5 $ 437 $ 437 Commercial - Other 5 16,651 16,651 Commercial and industrial - Other 4 555 555 Residential - 1-4 Family 2 5 5 Consumer - Home Equity 1 117 117 17 $ 17,765 $ 17,765 Modifications by Class Number of Pre-Modification Post-Modification Troubled Debt Restructurings Commercial - Construction 1 $ 123 $ 123 Commercial - Single and multifamily 2 307 307 Commercial - Other 4 8,577 7,274 Commercial and industrial - Other 6 9,041 8,904 Consumer - Other 1 999 999 14 $ 19,047 $ 17,607 Modifications by Class Number of Pre-Modification Post-Modification Troubled Debt Restructurings Commercial - Single and multifamily 1 $ 623 $ 623 Commercial - Other 10 9,190 9,190 Residential - 1-4 Family 5 600 598 Residential - Construction 1 102 102 17 $ 10,515 $ 10,513 The following tables disclose the recorded investment and number of modifications for TDRs for the prior years where a concession was made and the borrower subsequently defaulted in the respective reporting period. For the year ended 2016, there were no loans that were restructured that had subsequently defaulted during the period. Modifications that subsequently defaulted for the twelve months ending December 31, 2015 Number of Contracts Recorded Investment Troubled Debt Restructurings Commercial - Single and multifamily 1 $ — Commercial - Other 1 373 Commercial and industrial - Other 4 6,579 Residential - 1-4 Family 2 169 8 $ 7,121 Modifications that subsequently defaulted for the twelve months ending December 31, 2014 Number of Contracts Recorded Investment Troubled Debt Restructurings Commercial and industrial - Other 2 $ 101 2 $ 101 The following table presents the Company’s TDR activity in 2016 and 2015: (In thousands) 2016 2015 Balance at beginning of year $ 22,048 $ 16,714 Principal payments (5,870 ) (5,460 ) TDR status change (1) 2,235 — Other reductions (2) (2,348 ) (3,160 ) Newly identified TDRs 17,764 13,954 Balance at end of year $ 33,829 $ 22,048 ________________________________ (1) TDR status change classification represents TDR loans with a specified interest rate equal to or greater than the rate that the Company was willing to accept at the time of the restructuring for a new loan with comparable risk and the loan was on current payment status and not impaired based on the terms specified by the restructuring agreement. (2) Other reductions classification consists of transfer to other real estate owned, charge-offs to loans, and other loan sale payoffs. The evaluation of certain loans individually for specific impairment includes loans that were previously classified as TDRs or continue to be classified as TDRs.

LOAN LOSS ALLOWANCE

LOAN LOSS ALLOWANCE	12 Months Ended
	Dec. 31, 2016
Receivables [Abstract]
LOAN LOSS ALLOWANCE	LOAN LOSS ALLOWANCE Activity in the allowance for loan losses for 2016, 2015, and 2014 was as follows: Business Activities Loans (In thousands) Commercial Commercial Residential Consumer Unallocated Total Balance at beginning of year $ 14,508 $ 7,317 $ 7,566 $ 4,956 $ 227 $ 34,574 Charged-off loans 2,127 4,620 2,036 1,722 — 10,505 Recoveries on charged-off loans 243 123 159 267 — 792 Provision for loan losses 3,781 6,551 2,063 1,946 27 14,368 Balance at end of year $ 16,405 $ 9,371 $ 7,752 $ 5,447 $ 254 $ 39,229 Individually evaluated for impairment 158 264 136 156 — 714 Collectively evaluated 16,247 9,107 7,616 5,291 254 38,515 Total $ 16,405 $ 9,371 $ 7,752 $ 5,447 $ 254 $ 39,229 Business Activities Loans (In thousands) Commercial real estate Commercial Residential Consumer Unallocated Total Balance at beginning of year $ 14,690 $ 5,206 $ 6,836 $ 5,928 $ 135 $ 32,795 Charged-off loans 6,865 2,358 1,215 1,183 — 11,621 Recoveries on charged-off loans 164 169 141 285 — 759 Provision for loan losses 6,519 4,300 1,804 (74 ) 92 12,641 Balance at end of year $ 14,508 $ 7,317 $ 7,566 $ 4,956 $ 227 $ 34,574 Individually evaluated for impairment 149 21 153 103 — 426 Collectively evaluated 14,359 7,296 7,413 4,853 227 34,148 Total $ 14,508 $ 7,317 $ 7,566 $ 4,956 $ 227 $ 34,574 Business Activities Loans (In thousands) Commercial Commercial Residential Consumer Unallocated Total Balance at beginning of year $ 13,705 $ 5,173 $ 6,937 $ 3,644 $ 68 $ 29,527 Charged-off loans 4,207 2,500 1,455 1,308 — 9,470 Recoveries on charged-off loans 9 193 186 285 — 673 Provision for loan losses 5,183 2,340 1,168 3,307 67 12,065 Balance at end of year $ 14,690 $ 5,206 $ 6,836 $ 5,928 $ 135 $ 32,795 Individually evaluated for impairment 922 — 155 66 — 1,143 Collectively evaluated 13,768 5,206 6,681 5,862 135 31,652 Total $ 14,690 $ 5,206 $ 6,836 $ 5,928 $ 135 $ 32,795 Acquired Loans (In thousands) Commercial Commercial Residential Consumer Unallocated Total Balance at beginning of year $ 1,903 $ 1,330 $ 976 $ 525 $ — $ 4,734 Charged-off loans 977 1,095 829 620 — 3,521 Recoveries on charged-off loans 61 266 144 91 — 562 Provision for loan losses 1,316 663 475 540 — 2,994 Balance at end of year $ 2,303 $ 1,164 $ 766 $ 536 $ — $ 4,769 Individually evaluated for impairment 250 60 11 111 — 432 Purchased credit-impaired loans — — — — — — Collectively evaluated 2,053 1,104 755 425 — 4,337 Total $ 2,303 $ 1,164 $ 766 $ 536 $ — $ 4,769 Acquired Loans (In thousands) Commercial Commercial Residential Consumer Unallocated Total Balance at beginning of year $ 790 $ 1,093 $ 615 $ 369 $ — $ 2,867 Charged-off loans 681 752 642 992 — 3,067 Recoveries on charged-off loans 418 289 64 78 — 849 Provision for loan losses 1,376 700 939 1,070 — 4,085 Balance at end of year $ 1,903 $ 1,330 $ 976 $ 525 $ — $ 4,734 Individually evaluated for impairment 43 — 30 25 — 98 Purchased credit-impaired loans 42 — — — — 42 Collectively evaluated 1,818 1,330 946 500 — 4,594 Total $ 1,903 $ 1,330 $ 976 $ 525 $ — $ 4,734 Acquired Loans (In thousands) Commercial Commercial Residential Consumer Unallocated Total Balance at beginning of year $ 2,339 $ 597 $ 625 $ 235 $ — $ 3,796 Charged-off loans 1,477 510 1,141 1,255 — 4,383 Recoveries on charged-off loans 261 35 179 76 — 551 Provision for loan losses (333 ) 971 952 1,313 — 2,903 Balance at end of year $ 790 $ 1,093 $ 615 $ 369 $ — $ 2,867 Individually evaluated for impairment 48 — 48 75 — 171 Purchased credit-impaired loans — — — — — — Collectively evaluated 742 1,093 567 294 — 2,696 Total $ 790 $ 1,093 $ 615 $ 369 $ — $ 2,867 Credit Quality Information Business Activities Loans Credit Quality Analysis The Company monitors the credit quality of its portfolio by using internal risk ratings that are based on regulatory guidance. Loans that are given a Pass rating are not considered a problem credit. Loans that are classified as Special Mention loans are considered to have potential weaknesses and are evaluated closely by management. Substandard and non-accruing loans are loans for which a definitive weakness has been identified and which may make full collection of contractual cash flows questionable. Doubtful loans are those with identified weaknesses that make full collection of contractual cash flows, on the basis of currently existing facts, conditions, and values, highly questionable and improbable. For commercial credits, the Company assigns an internal risk rating at origination and reviews the rating annual, semiannually, or quarterly depending on the risk rating. The rating is also reassessed at any point in time when management becomes aware of information that may affect the borrower’s ability to fulfill their obligations. The Company risk rates its residential mortgages, including 1-4 family and residential construction loans, based on a three rating system: Pass, Special Mention, and Substandard. Loans that are current within 59 days are rated Pass. Residential mortgages that are 60 - 89 days delinquent are rated Special Mention. Loans delinquent for 90 days or greater are rated Substandard and generally placed on non-accrual status. Home equity loans are risk rated based on the same rating system as the Company’s residential mortgages. Ratings for other consumer loans, including auto loans, are based on a two rating system. Loans that are current within 119 days are rated Performing while loans delinquent for 120 days or more are rated Non-performing. Other consumer loans are placed on non-accrual at such time as they become Non-performing. Acquired Loans Credit Quality Analysis Upon acquiring a loan portfolio, our internal loan review function assigns risk ratings to the acquired loans, utilizing the same methodology as it does with business activities loans. This may differ from the risk rating policy of the predecessor bank. Loans which are rated Substandard or worse according to the rating process outlined below are deemed to be credit impaired loans accounted for under ASC 310-30, regardless of whether they are classified as performing or non-performing. The Bank utilizes a loan risk rating system for acquired loans consistent with loans originated from business activities, as outlined in the Credit Quality Information section of this Note. The ratings system is similar to loans originated through business activities. The Company subjects loans that do not meet the ASC 310-30 criteria to ASC 450-20 by collectively evaluating these loans for an allowance for loan loss. The Company applies a methodology similar to the methodology prescribed for business activities loans, which includes the application of environmental factors to each category of loans. The methodology to collectively evaluate the acquired loans outside the scope of ASC 310-30 includes the application of a number of environmental factors that reflect management’s best estimate of the level of incremental credit losses that might be recognized given current conditions. This is reviewed as part of the allowance for loan loss adequacy analysis. As the loan portfolio matures and environmental factors change, the loan portfolio will be reassessed each quarter to determine an appropriate reserve allowance. Additionally, the Company considers the need for an additional reserve for acquired loans accounted for outside of the scope of ASC 310-30 under ASC 310-20. At acquisition date, the Bank determined a fair value mark with credit and interest rate components. Under the Company’s model, the impairment evaluation process involves comparing the carrying value of acquired loans, including the entire unamortized premium or discount, to the recorded reserve allowance. If necessary, the Company books an additional reserve to account for shortfalls identified through this calculation. Fair value marks are not bifurcated when evaluating for impairment. A decrease in the expected cash flows in subsequent periods requires the establishment of an allowance for loan losses at that time for ASC 310-30 loans. At year-end 2016, the allowance for loan losses related to acquired loans under ASC 310-30 and ASC 310-20 was $4.8 million using the above mentioned criteria. The Company presented several tables within this footnote separately for business activity loans and acquired loans in order to distinguish the credit performance of the acquired loans from the business activity loans. The following tables present the Company’s loans by risk rating at year-end 2016 and 2015: Business Activities Loans Commercial Real Estate Credit Risk Profile by Creditworthiness Category Construction Single and multi-family Real Estate Total commercial real estate (In thousands) 2016 2015 2016 2015 2016 2015 2016 2015 Grade: Pass $ 253,302 $ 208,138 $ 189,310 $ 212,900 $ 1,434,762 $ 1,155,770 $ 1,877,374 $ 1,576,808 Special mention — — 334 — 5,827 3,449 6,161 3,449 Substandard — 2,058 2,175 1,923 40,598 49,716 42,773 53,697 Doubtful — — — — 36 73 36 73 Total $ 253,302 $ 210,196 $ 191,819 $ 214,823 $ 1,481,223 $ 1,209,008 $ 1,926,344 $ 1,634,027 Commercial and Industrial Loans Credit Risk Profile by Creditworthiness Category Asset based lending Other Total comm. and industrial (In thousands) 2016 2015 2016 2015 2016 2015 Grade: Pass $ 321,270 $ 331,253 $ 569,704 $ 455,710 $ 890,974 $ 786,963 Special mention — — 123 24,578 123 24,578 Substandard — — 13,825 15,691 13,825 15,691 Doubtful — — 3,180 — 3,180 — Total $ 321,270 $ 331,253 $ 586,832 $ 495,979 $ 908,102 $ 827,232 Residential Mortgages Credit Risk Profile by Internally Assigned Grade 1-4 family Construction Total residential mortgages (In thousands) 2016 2015 2016 2015 2016 2015 Grade: Pass $ 1,578,913 $ 1,449,073 $ 11,178 $ 26,704 $ 1,590,091 $ 1,475,777 Special mention 701 857 — — 701 857 Substandard 4,179 4,303 — — 4,179 4,303 Total $ 1,583,793 $ 1,454,233 $ 11,178 $ 26,704 $ 1,594,971 $ 1,480,937 Consumer Loans Credit Risk Profile Based on Payment Activity Home equity Auto and other Total consumer (In thousands) 2016 2015 2016 2015 2016 2015 Performing $ 310,846 $ 305,562 $ 477,416 $ 310,777 $ 788,262 $ 616,339 Nonperforming 2,675 1,597 952 551 3,627 2,148 Total $ 313,521 $ 307,159 $ 478,368 $ 311,328 $ 791,889 $ 618,487 Acquired Loans Commercial Real Estate Credit Risk Profile by Creditworthiness Category Construction Single and multi-family Real Estate Total commercial real estate (In thousands) 2016 2015 2016 2015 2016 2015 2016 2015 Grade: Pass $ 33,461 $ 42,176 $ 119,414 $ 32,796 $ 496,562 $ 324,614 $ 649,437 $ 399,586 Special mention — — 907 655 1,622 352 2,529 1,007 Substandard 746 1,298 5,351 3,332 32,031 20,517 38,128 25,147 Total $ 34,207 $ 43,474 $ 125,672 $ 36,783 $ 530,215 $ 345,483 $ 690,094 $ 425,740 Commercial and Industrial Loans Credit Risk Profile by Creditworthiness Category Asset based lending Other Total comm. and industrial (In thousands) 2016 2015 2016 2015 2016 2015 Grade: Pass $ — $ — $ 147,102 $ 212,825 $ 147,102 $ 212,825 Special mention — — 1,260 487 1,260 487 Substandard — — 5,574 7,719 5,574 7,719 Total $ — $ — $ 153,936 $ 221,031 $ 153,936 $ 221,031 Residential Mortgages Credit Risk Profile by Internally Assigned Grade 1-4 family Construction Total residential mortgages (In thousands) 2016 2015 2016 2015 2016 2015 Grade: Pass $ 294,983 $ 329,375 $ 804 $ 1,351 $ 295,787 $ 330,726 Special mention 343 311 — — 343 311 Substandard 2,029 3,061 — — 2,029 3,061 Total $ 297,355 $ 332,747 $ 804 $ 1,351 $ 298,159 $ 334,098 Consumer Loans Credit Risk Profile Based on Payment Activity Home equity Auto and other Total consumer (In thousands) 2016 2015 2016 2015 2016 2015 Performing $ 79,762 $ 52,719 $ 105,117 $ 129,345 $ 184,879 $ 182,064 Nonperforming 517 727 895 893 1,412 1,620 Total $ 80,279 $ 53,446 $ 106,012 $ 130,238 $ 186,291 $ 183,684 The following table summarizes information about total loans rated Special Mention or lower. The table below includes consumer loans that are Special Mention and Substandard accruing that are classified in the above table as performing based on payment activity. December 31, 2016 December 31, 2015 (In thousands) Business Acquired Loans Total Business Acquired Loans Total Non-Accrual $ 16,816 $ 5,424 $ 22,240 $ 15,484 $ 5,391 $ 20,875 Substandard Accruing 51,125 44,177 95,302 60,549 32,560 93,109 Total Classified 67,941 49,601 117,542 76,033 37,951 113,984 Special Mention 7,479 4,323 11,802 29,036 2,259 31,295 Total Criticized $ 75,420 $ 53,924 $ 129,344 $ 105,069 $ 40,210 $ 145,279

PREMISES AND EQUIPMENT

PREMISES AND EQUIPMENT	12 Months Ended
	Dec. 31, 2016
Property, Plant and Equipment [Abstract]
PREMISES AND EQUIPMENT	PREMISES AND EQUIPMENT Year-end premises and equipment are summarized as follows: (In thousands) 2016 2015 Estimated Useful Land $ 10,563 $ 10,719 N/A Buildings and improvements 85,319 81,058 5 - 39 years Furniture and equipment 42,693 34,950 3 - 7 years Construction in process 4,084 1,860 Premises and equipment, gross 142,659 128,587 Accumulated depreciation and amortization (49,444 ) (40,515 ) Premises and equipment, net $ 93,215 $ 88,072 Depreciation and amortization expense for the years 2016, 2015, and 2014 amounted to $8.4 million , $8.6 million , and $8.3 million , respectively.

GOODWILL AND OTHER INTANGIBLES

GOODWILL AND OTHER INTANGIBLES	12 Months Ended
	Dec. 31, 2016
Goodwill and Intangible Assets Disclosure [Abstract]
GOODWILL AND OTHER INTANGIBLES	GOODWILL AND OTHER INTANGIBLES Goodwill and other intangible assets are presented in the tables below. The Company completed three acquisitions during 2016 which resulted in the capitalization of goodwill and other intangibles. In accordance with applicable accounting guidance, the Company allocated the amount paid to the fair value of the net assets acquired, with any excess amounts recorded as goodwill. There were two acquisitions during 2015. The goodwill balance is allocated to the consolidated Company. The activity impacting goodwill in 2016 and 2015 is as follows: (In thousands) 2016 2015 Balance, beginning of the period $ 323,943 $ 264,742 Goodwill acquired and adjusted: 44 Business Capital 15,892 — Ronald N. Lazzaro, PC 5,492 — First Choice Bank 58,036 — Hampden Bancorp Acquisition — 42,513 Firestone Financial — 17,503 Adjustments (1) (257 ) (814 ) Balance, end of the period $ 403,106 $ 323,943 ______________________________________________________________________________________________________ (1) In 2016, goodwill related to the Hampden and Firestone acquisitions was adjusted since acquisition dates to reflect new information available during the one-year measurement period. In 2015, goodwill was adjusted to reflect the subsequent sale of the Company's Tennessee operations, which were originally obtained from the acquisition of Beacon Federal in 2012. The Company tests goodwill impairment annually as of September 30, 2016 using third quarter data. The results of the qualitative assessment indicated it is more likely than not that the reporting unit's fair value exceeds its carrying amount, and accordingly, the two-step impairment test was not performed. If events or changes in circumstances indicate that impairment is possible, the Company will perform additional reviews. No impairment was recorded on goodwill for 2016 and 2015. The components of other intangible assets are as follows: (In thousands) Gross Intangible Assets Accumulated Amortization Net Intangible Assets December 31, 2016 Non-maturity deposits (core deposit intangible) $ 44,523 $ (30,099 ) $ 14,424 Insurance contracts 7,558 (7,504 ) 54 All other intangible assets 7,866 (2,899 ) 4,967 Total $ 59,947 $ (40,502 ) $ 19,445 December 31, 2015 Non-maturity deposits (core deposit intangible) $ 36,833 $ (28,099 ) $ 8,734 Insurance contracts 7,558 (6,863 ) 695 All other intangible assets 3,894 (2,659 ) 1,235 Total $ 48,285 $ (37,621 ) $ 10,664 Other intangible assets are amortized on a straight-line or accelerated basis over their estimated lives, which range from four to fifteen years. Amortization expense related to intangibles totaled $2.9 million in 2016, $3.6 million in 2015, and $4.8 million in 2014. The estimated aggregate future amortization expense for intangible assets remaining at year-end 2016 is as follows: 2017- $3.9 million ; 2018- $3.6 million ; 2019- $3.3 million ; 2020- $3.0 million ; 2021- $ 1.2 million ; and thereafter- $4.5 million . For the years 2016, 2015, and 2014, no impairment charges were identified for the Company’s intangible assets.

OTHER ASSETS

OTHER ASSETS	12 Months Ended
	Dec. 31, 2016
Other Assets [Abstract]
OTHER ASSETS	OTHER ASSETS Year-end other assets are summarized as follows: (In thousands) 2016 2015 Capitalized servicing rights $ 11,524 $ 5,187 Accrued interest receivable 26,113 20,940 Investment in tax credits 1,500 2,854 Accrued federal and state tax receivable (1) 19,076 6,731 Derivative assets 21,617 17,507 Other 18,627 11,707 Total other assets $ 98,457 $ 64,926 (1) Accrued federal and state tax receivable as of December 31, 2016 includes $5.9 million of New York State refundable tax credits from investment in historical tax credit partnerships in New York State. This balance was $4 million at year-end 2015. The Bank sells loans in the secondary market and retains the ability to service many of these loans. The Bank earns fees for the servicing provided. Loans sold and serviced for others amounted to $1.3 billion , $807.6 million , and $625.4 million at year-end 2016, 2015, and 2014, respectively. Loans serviced for others are not included in the accompanying consolidated balance sheets. The risks inherent in servicing assets relate primarily to changes in prepayments that result from shifts in interest rates. Contractually specified servicing fees were $3.2 million , $1.7 million , and $1.5 million for the years 2016, 2015, and 2014, respectively, and included as a component of loan related fees within non-interest income. The significant assumptions used in the valuation at year-end 2016 included a weighted average discount rate of 11.8% and pre-payment speed assumptions ranging from 7.35% to 14.28% . Servicing rights activity was as follows: (In thousands) 2016 2015 Balance at beginning of year $ 5,187 $ 3,757 Acquired from 44 Business Capital 3,489 — Acquired from First Choice Bank (1) 696 — Additions 4,116 2,622 Amortization (1,964 ) (1,192 ) Balance at end of year $ 11,524 $ 5,187 (1) Amounts acquired from First Choice Bank are accounted for at fair value. The balance as of December 31, 2016 was $798 thousand .

DEPOSITS

DEPOSITS	12 Months Ended
	Dec. 31, 2016
Deposits [Abstract]
DEPOSITS	DEPOSITS A summary of year-end time deposits is as follows: (In thousands) 2016 2015 Maturity date: Within 1 year $ 1,316,973 $ 1,264,948 Over 1 year to 2 years 582,764 446,918 Over 2 years to 3 years 142,160 100,728 Over 3 years to 4 years 150,388 46,146 Over 4 years to 5 years 137,845 123,885 Over 5 years 3,413 3,975 Total $ 2,333,543 $ 1,986,600 Account balances: Less than $100,000 $ 656,055 $ 545,819 $100,000 or more 1,677,488 1,440,781 Total $ 2,333,543 $ 1,986,600 Included in time deposits are brokered deposits of $787.9 million and $784.1 million at December 31, 2016 and December 31, 2015, respectively. Included in the deposit balances contained on the balance sheet are reciprocal deposits of $113.4 million and $101.5 million at December 31, 2016 and December 31, 2015, respectively. Included in total deposits are related party deposits of $17.2 million at December 31, 2016.

BORROWED FUNDS

BORROWED FUNDS	12 Months Ended
	Dec. 31, 2016
Debt Disclosure [Abstract]
BORROWED FUNDS	BORROWED FUNDS Borrowed funds at December 31, 2016 and 2015 are summarized, as follows: 2016 2015 (in thousands, except rates) Principal Weighted Principal Weighted Short-term borrowings: Advances from the FHLBB $ 1,072,044 0.71 % $ 1,071,200 0.43 % Other Borrowings 10,000 2.42 — — Total short-term borrowings: 1,082,044 0.72 1,071,200 0.43 Long-term borrowings: Advances from the FHLBB 142,792 1.53 103,135 1.89 Subordinated notes 73,697 7.00 73,519 7.00 Junior subordinated notes 15,464 2.77 15,464 2.23 Total long-term borrowings: 231,953 3.35 192,118 3.88 Total $ 1,313,997 1.19 % $ 1,263,318 0.96 % Short-term debt includes Federal Home Loan Bank of Boston (“FHLBB”) advances with an original maturity of less than one year. At year-end 2016, the Company maintained a short-term line-of-credit drawdown through a correspondent bank. The Bank also maintains a $3.0 million secured line of credit with the FHLBB that bears a daily adjustable rate calculated by the FHLBB. There was no outstanding balance on the FHLBB line of credit for the periods ended December 31, 2016 and December 31, 2015. The Company is in compliance with all debt covenants as of December 31, 2016. The Bank is approved to borrow on a short-term basis from the Federal Reserve Bank of Boston as a non-member bank. The Bank has pledged certain loans and securities to the Federal Reserve Bank to support this arrangement. No borrowings with the Federal Reserve Bank of Boston took place for the periods ended December 31, 2016 and December 31, 2015. Long-term FHLBB advances consist of advances with an original maturity of more than one year. The advances outstanding at December 31, 2016 include callable advances totaling $11 million , and amortizing advances totaling $1.2 million . The advances outstanding at December 31, 2015 include callable advances totaling $11.0 million , and amortizing advances totaling $1.2 million . All FHLBB borrowings, including the line of credit, are secured by a blanket security agreement on certain qualified collateral, principally all residential first mortgage loans and certain securities. A summary of maturities of FHLBB advances at year-end 2016 is as follows: 2016 (In thousands) Amount Weighted Fixed rate advances maturing: 2017 $ 1,157,118 0.77 % 2018 43,901 1.33 2019 — — 2020 5,543 1.94 2021 and beyond 8,274 4.06 Total fixed rate advances $ 1,214,836 0.81 Total FHLBB advances $ 1,214,836 0.81 % The Company did not have variable-rate FHLB advances for the period ended December 31, 2016. In September 2012, the Company issued fifteen year subordinated notes in the amount of $75.0 million at a discount of 1.15% . The interest rate is fixed at 6.875% for the first ten years. After ten years, the notes become callable and convert to an interest rate of three month LIBOR plus 5.113% . The subordinated note includes reduction to the note principal balance of $706 thousand and $829 thousand for unamortized debt issuance costs as of December 31, 2016 and December 31 2015, respectively. The Company holds 100% of the common stock of Berkshire Hills Capital Trust I (“Trust I”) which is included in other assets with a cost of $0.5 million . The sole asset of Trust I is $15.5 million of the Company’s junior subordinated debentures due in 2035. These debentures bear interest at a variable rate equal to LIBOR plus 1.85% and had a rate of 2.77% and 2.23% at December 31, 2016 and December 31, 2015, respectively. The Company has the right to defer payments of interest for up to five years on the debentures at any time, or from time to time, with certain limitations, including a restriction on the payment of dividends to shareholders while such interest payments on the debentures have been deferred. The Company has not exercised this right to defer payments. The Company has the right to redeem the debentures at par value. Trust I is considered a variable interest entity for which the Company is not the primary beneficiary. Accordingly, Trust I is not consolidated into the Company’s financial statements.

OTHER LIABILITIES

OTHER LIABILITIES	12 Months Ended
	Dec. 31, 2016
Other Liabilities Disclosure [Abstract]
OTHER LIABILITIES	OTHER LIABILITIES Year-end other liabilities are summarized as follows: (In thousands) 2016 2015 Derivative liabilities $ 24,420 $ 28,181 Capital lease obligation 11,639 11,939 Asset purchase settlement payable 29,158 — Employee benefits liability 11,661 11,692 Level lease liability 6,997 4,262 Other 49,280 35,370 Total other liabilities $ 133,155 $ 91,444

EMPLOYEE BENEFIT PLANS

EMPLOYEE BENEFIT PLANS	12 Months Ended
	Dec. 31, 2016
Compensation and Retirement Disclosure [Abstract]
EMPLOYEE BENEFIT PLANS	EMPLOYEE BENEFIT PLANS Pension Plan The Company maintains a legacy, employer-sponsored defined benefit pension plan (the “Plan”) for which participation and benefit accruals were frozen on January 1, 2003. The Plan was assumed in connection with the Rome Bancorp acquisition in 2011. Accordingly, no employees are permitted to commence participation in the Plan and future salary increases and years of credited service are not considered when computing an employee’s benefits under the Plan. As of December 31, 2016, all minimum Employee Retirement Income Security Act (“ERISA”) funding requirements have been met. Information regarding the pension plan at December 31, 2016 and 2015 is as follows: (In thousands) 2016 2015 Change in projected benefit obligation: Projected benefit obligation at beginning of year $ 6,585 $ 7,193 Service Cost 76 — Interest cost 267 268 Actuarial gain (308 ) (454 ) Benefits paid (318 ) (351 ) Settlements (176 ) (71 ) Projected benefit obligation at end of year 6,126 6,585 Accumulated benefit obligation 6,126 6,585 Change in fair value of plan assets: Fair value of plan assets at plan beginning of year 5,211 5,756 Actual return on plan assets 404 (123 ) Contributions by employer — — Benefits paid (318 ) (351 ) Settlements (176 ) (71 ) Fair value of plan assets at end of year 5,121 5,211 Underfunded status $ 1,005 $ 1,374 Amounts Recognized in Consolidated Balance Sheet Other Liabilities $ 1,005 $ 1,374 Net periodic pension cost is comprised of the following for the years ended December 31, 2016 and 2015: (In thousands) 2016 2015 Service Cost $ 76 $ — Interest Cost 267 268 Expected return on plan assets (361 ) (455 ) Amortization of unrecognized actuarial loss 163 175 Net periodic pension costs $ 145 $ (12 ) Changes in plan assets and benefit obligations recognized in accumulated other comprehensive income during 2016 and 2015 are as follows: (In thousands) 2016 2015 Amortization of actuarial (loss) $ (163 ) $ (176 ) Actuarial (gain) loss (351 ) 125 Total recognized in accumulated other comprehensive income (514 ) (51 ) Total recognized in net periodic pension cost recognized and other comprehensive income $ (369 ) $ (63 ) The amounts in accumulated other comprehensive income that have not yet been recognized as components of net periodic benefit cost are a net loss of $1.5 million and $2.0 million in 2016 and 2015, respectively. The Company expects to make no cash contributions to the pension trust during the 2017 fiscal year. The amount expected to be amortized from other comprehensive income into net periodic pension cost over the next fiscal year is $100 thousand . The principal actuarial assumptions used at December 31, 2016 and 2015 were as follows: 2016 2015 Projected benefit obligation Discount rate 3.980 % 4.170 % Net periodic pension cost Discount rate 4.170 % 3.820 % Long term rate of return on plan assets 7.000 % 8.000 % The discount rate that is used in the measurement of the pension obligation is determined by comparing the expected future retirement payment cash flows of the pension plan to the Citigroup Above Median Double-A Curve as of the measurement date. The expected long-term rate of return on Plan assets reflects long-term earnings expectations on existing Plan assets and those contributions expected to be received during the current plan year. In estimating that rate, appropriate consideration was given to historical returns earned by Plan assets in the fund and the rates of return expected to be available for reinvestment. The rates of return were adjusted to reflect current capital market assumptions and changes in investment allocations. The Company’s overall investment strategy with respect to the Plan’s assets is primarily for preservation of capital and to provide regular dividend and interest payments. The Plan’s targeted asset allocation is 63% equity securities via investment in the Long-Term Growth - Equity Portfolio (‘LTGE’), 36% intermediate-term investment grade bonds via investment in the Long-Term Growth - Fixed-Income Portfolio (‘LTGFI’), and 1% in cash equivalents portfolio (for liquidity). Equity securities include investments in a diverse mix of equity funds to gain exposure in the US and international markets. The fixed income portion of the Plan assets is a diversified portfolio that primarily invests in intermediate-term bond funds. The overall rate of return is based on the historical performance of the assets applied against the Plan’s target allocation, and is adjusted for the long-term inflation rate. The fair values for investment securities are determined by quoted prices in active markets, if available (Level 1). For securities where quoted prices are not available, fair values are calculated based on market prices of similar securities (Level 2). For securities where quoted prices or market prices of similar securities are not available, fair values are calculated using discounted cash flows or other market indicators (Level 3). The fair values of the Plan’s assets by category and level within the fair value hierarchy are as follows at December 31, 2016: Asset Category (In thousands) Total Level 1 Level 2 Equity Mutual Funds: Large-Cap $ 1,624 $ — $ 1,624 Mid-Cap 401 — 401 Small-Cap 415 — 415 International 757 — 757 Fixed Income Funds Fixed Income - US Core 1,378 — 1,378 Intermediate Duration 472 — 472 Cash Equivalents - money market 74 30 44 Total $ 5,121 $ 30 $ 5,091 The fair values of the Plan’s assets by category and level within the fair value hierarchy are as follows at December 31, 2015: Asset Category (In thousands) Total Level 1 Level 2 Equity Mutual Funds: Large-Cap $ 1,516 $ — $ 1,516 Mid-Cap 374 — 374 Small-Cap 362 — 362 International 760 — 760 Fixed Income Funds Fixed Income - US Core 1,564 — 1,564 Intermediate Duration 522 — 522 Cash Equivalents - money market 113 62 51 Total $ 5,211 $ 62 $ 5,149 The Plan did not hold any assets classified as Level 3, and there were no transfers between levels during 2016 or 2015. Estimated benefit payments under the Company’s pension plans over the next ten years at December 31, 2016 are as follows: Year Payments (In thousands) 2017 342 2018 338 2019 375 2020 367 2021 357 2022-2026 1,829 Postretirement Benefits The Company has an unfunded post-retirement medical plan which was assumed in connection with the Rome Bancorp acquisition in 2011. The postretirement plan has been modified so that participation is closed to those employees who did not meet the retirement eligibility requirements by March 31, 2011. The Company contributes partially to medical benefits and life insurance coverage for retirees. Such retirees and their surviving spouses are responsible for the remainder of the medical benefits, including increases in premiums levels, between the total premium and the Company’s contribution. The Company also has an executive long-term care (“LTC”) postretirement benefit plan which started August 1, 2014. The LTC plan reimburses executives for certain costs in the event of a future chronic illness. Funding of the plan comes from Company paid insurance policies or direct payments. At plan’s inception, a $558 thousand benefit obligation was recorded against equity representing the prior service cost of plan participants. Information regarding the post-retirement plan at December 31, 2016 and 2015 is as follows: (In thousands) 2016 2015 Change in accumulated postretirement benefit obligation: Accumulated post-retirement benefit obligation at beginning of year $ 3,039 $ 1,604 Prior service cost of long-term care plan participants — 1,595 Service Cost 32 34 Interest cost 129 124 Participant contributions 47 47 Actuarial loss (gain) 130 (284 ) Benefits paid (128 ) (81 ) Amendments — — Accumulated post-retirement benefit obligation at end of year $ 3,249 $ 3,039 Change in plan assets: Fair value of plan assets at beginning of year $ — $ — Contributions by employer 81 34 Contributions by participant 47 47 Benefits paid (128 ) (81 ) Fair value of plan assets at end of year $ — $ — Amounts Recognized in Consolidated Balance Sheet Other Liabilities $ 3,249 $ 3,039 Net periodic post-retirement cost is comprised of the following for the year ended December 31, 2016 and 2015: (In thousands) 2016 2015 Service cost $ 32 $ 34 Interest costs 129 124 Amortization of net prior service credit 83 83 Amortization of net actuarial loss — — Net periodic post-retirement costs $ 244 $ 241 Changes in benefit obligations recognized in accumulated other comprehensive income during 2016 and 2015 are as follows: (In thousands) 2016 2015 Amortization of actuarial loss $ — $ — Amortization of prior service credit (83 ) (83 ) Net actuarial (gain) loss (126 ) (257 ) Total recognized in accumulated other comprehensive income (209 ) (340 ) Accrued post-retirement liability recognized $ 1,718 $ 1,555 The amounts in accumulated other comprehensive income that have not yet been recognized as components of net periodic benefit cost are as follows: (In thousands) 2016 2015 Net prior service cost (credit) $ 1,659 $ 1,742 Net actuarial (gain) loss (126 ) (257 ) Total recognized in accumulated other comprehensive income 1,533 1,485 The amount expected to be amortized from other comprehensive income into net periodic postretirement cost over the next fiscal year is $83 thousand . The discount rates used in the measurement of the postretirement medical and LTC plan obligations are determined by comparing the expected future retirement payment cash flows of the plans to the Citigroup Above Median Double-A Curve as of the measurement date. The assumed discount rates on a weighted-average basis were 3.91% and 4.15% as of December 31, 2016 and December 31, 2015, respectively. The assumed health care cost trend rate used in measuring the accumulated post-retirement benefit medical obligation is expected to be 8.15% for 2016, and is gradually expected to decrease to 3.89% by 2075. This assumption may have a significant effect on the amounts reported. However, as noted above, increases in premium levels are the financial responsibility of the plan beneficiary. Thus an increase or decrease in 1% of the health care cost trend rates utilized would have had an immaterial effect on the service and interest cost as well as the accumulated post-retirement benefit obligation for the postretirement plan as of December 31, 2016. For participants in the LTC plan covered by insurance policies, no increase in annual premiums is assumed based on the history of the corresponding insurance provider. Estimated benefit payments under the post-retirement benefit plan over the next ten years at December 31, 2016 are as follows: Year Payments (In thousands) 2017 81 2018 100 2019 100 2020 99 2021 102 2022 - 2026 522 401(k) Plan The Company provides a 401(k) Plan in which most employees participate. The Company contributes a non-elective 3% of gross annual wages for each participant, regardless of the participant’s deferral, in addition to a 100% match up to 4% of gross annual wages. The Company’s contributions vest immediately. Expense related to the plan was $3.9 million in 2016, $3.6 million in 2015, and $3.0 million in 2014. Employee Stock Ownership Plan (“ESOP”) As part of the acquisition of Hampden in 2015, along with another merger in 2012 and two during 2011, the Company acquired ESOP plans that were frozen and terminated prior to the completion of those transactions. On the acquisition dates, all amounts in the plans were vested and the loans under the plans were repaid from the sale proceeds of unallocated shares. Other Plans The Company maintains a supplemental executive retirement plan (“SERP”) for a few select executives. Benefits generally commence no earlier than age sixty-two and are payable at the executive’s option, either as an annuity or as a lump sum. Some of these SERPs were assumed in connection with the Beacon acquisition in 2012. In 2015 a SERP was acquired in connection with the Hampden Bank acquisition with accrued liability of $1.4 million at acquisition date in April 2015 and $1.2 million at year-end 2016. At year-end 2016 and 2015, the accrued liability for these SERPs were $7.4 million and $6.5 million , respectively. SERP expense was $917 thousand in 2016, $752 thousand in 2015, and $583 thousand in 2014, and is recognized over the required service period. The Company assumed split-dollar life insurance agreements with the acquisition of Hampden Bank in 2015 with an accrued liability of $860 thousand at acquisition date in April 2015 and $1.2 million as of year-end 2016. The Company has endorsement split-dollar arrangements pertaining to certain current and prior executives. Under these arrangements, the Company purchased policies insuring the lives of the executives, and separately entered into agreements to split the policy benefits with the executive. There are no post-retirement benefits associated with these policies.

INCOME TAXES

INCOME TAXES	12 Months Ended
	Dec. 31, 2016
Income Tax Disclosure [Abstract]
INCOME TAXES	INCOME TAXES Provision for Income Taxes The components of the Company’s provision for income taxes for the years ended December 31, 2016, 2015, and 2014 were, as follows: (In thousands) 2016 2015 2014 Current: Federal tax expense $ 6,758 $ 4,696 $ 294 State tax expense 1,101 (1,631 ) 305 Total current expense 7,859 3,065 599 Deferred: Federal tax expense 9,438 2,023 8,685 State tax expense 1,591 (24 ) 2,509 Total deferred tax expense 11,029 1,999 11,194 Change in valuation allowance (104 ) — (30 ) Total income tax expense $ 18,784 $ 5,064 $ 11,763 Effective Tax Rate The following is a reconciliation of the statutory federal income tax rate to the Company’s effective tax rate for the years ended December 31, 2016, 2015, and 2014: 2016 2015 2014 (In thousands, except rates) Amount Rate Amount Rate Amount Rate Statutory tax rate $ 27,108 35.0 % $ 19,104 35.0 % $ 15,928 35.0 % Increase (decrease) resulting from: State taxes, net of federal tax benefit 1,675 2.2 (974 ) (1.8 ) 1,810 4.0 Tax exempt income - investments, net (3,849 ) (5.0 ) (3,463 ) (6.3 ) (2,796 ) (6.1 ) Bank-owned life insurance (1,364 ) (1.8 ) (1,284 ) (2.4 ) (1,070 ) (2.4 ) Disallowed merger costs 542 0.7 422 0.8 206 0.5 Non-deductible goodwill on disposal operations sale — — 313 0.6 — — Tax credits, net of basis reduction (6,225 ) (8.0 ) (8,308 ) (15.2 ) (1,658 ) (3.6 ) Change in valuation allowance 125 0.2 — — — — Other, net 772 1.0 (746 ) (1.4 ) (657 ) (1.5 ) Effective tax rate $ 18,784 24.3 % $ 5,064 9.3 % $ 11,763 25.9 % Deferred Tax Liabilities and Assets As of December 31, 2016 and 2015, significant components of the Company’s deferred tax asset and liabilities were, as follows: (In thousands) 2016 2015 Deferred tax assets: Allowance for loan losses $ 17,747 $ 16,303 Tax credit carryforwards 4,100 7,295 Unrealized capital loss on tax credit investments 6,999 2,892 Net unrealized loss on swaps, securities available for sale, and pension in OCI — 2,371 Employee benefit plans 7,813 8,776 Purchase accounting adjustments 23,520 10,755 Net operating loss and capital loss carryforwards 2,643 3,317 Other 4,997 2,527 Deferred tax assets, net before valuation allowances 67,819 54,236 Valuation allowance (125 ) (229 ) Deferred tax assets, net of valuation allowances $ 67,694 $ 54,007 Deferred tax liabilities: Net unrealized gain on swaps, securities available for sale, and pension in OCI $ (5,884 ) $ — Premises and equipment (2,519 ) (2,577 ) Loan servicing rights (4,546 ) — Intangible amortization (11,543 ) (8,904 ) Other (2,074 ) — Deferred tax liabilities $ (26,566 ) $ (11,481 ) Deferred tax assets, net $ 41,128 $ 42,526 The Company’s net deferred tax asset decreased by $1.4 million during 2016, including $8.3 million deferred tax expense recognized as an decrease in shareholder's equity, and $17.8 million from the acquisition of First Choice resulting in a reduction in goodwill. Refer to Note 2 for more information about the acquisition. Deferred tax assets, net of valuation allowances, are expected to be realized through the reversal of existing taxable temporary differences and future taxable income. Valuation Allowances The components of the Company’s valuation allowance on its deferred tax asset, net as of December 31, 2016 and 2015 were, as follows: (in thousands) 2016 2015 State tax basis difference, net of Federal tax benefit (of 35%) $ (125 ) $ (229 ) Valuation allowances $ (125 ) $ (229 ) The state tax basis difference, net of Federal tax benefit was also originally recorded in 2012, due to management’s assessment that it is more likely than not that certain deferred tax assets recorded for the difference between the book basis and the state tax basis in certain tax credit limited partnership investments (LPs) will not be realized. Management anticipates that the remaining excess state tax basis will be realized as a capital loss upon disposition, and that it is unlikely that the Company will have capital gains against which to offset such capital losses. During 2016, the valuation allowance decreased by $104 thousand . A $125 thousand change was recorded as an increase to income tax expense and $229 thousand was recorded as a reduction in state tax basis upon sale of a partnership interest. The valuation allowances as of December 31, 2016 are subject to change in the future as the Company continues to periodically assess the likelihood of realizing its deferred tax assets. Tax Attributes At December 31, 2016, the Company has $7.5 million of federal net operating loss carryforwards, $6.1 million of New Jersey net operating losses, and $13.9 million of Connecticut net operating losses available that were obtained through acquisition, the utilization of which are limited under Internal Revenue Code 382. No deferred tax asset has been recorded on the Connecticut net operating loss since the state of Connecticut does not currently allow a deduction for net operating losses. These net operating losses begin to expire in 2024. The related deferred tax asset is $2.6 million . In addition, the Company has alternative minimum tax credit carryforwards of $4.1 million with no expiration date. The Company anticipates utilizing these carryforwards prior to their expirations. Unrecognized Tax Benefits On a periodic basis, the Company evaluates its income tax positions based on tax laws and regulations and financial reporting considerations, and records adjustments as appropriate. This evaluation takes into consideration the status of taxing authorities’ current examinations of the Company’s tax returns, recent positions taken by the taxing authorities on similar transactions, if any, and the overall tax environment in relation to uncertain tax positions. The following table presents changes in unrecognized tax benefits for the years ended December 31, 2016, 2015, and 2014: (In thousands) 2016 2015 2014 Unrecognized tax benefits at January 1 $ 307 $ 553 $ 477 Increase in gross amounts of tax positions related to prior years 270 — 55 Increase in gross amounts of tax positions related to current year — — 93 Decrease due to lapse in statute of limitations (117 ) (246 ) (72 ) Unrecognized tax benefits at December 31 $ 460 $ 307 $ 553 It is reasonably possible that over the next twelve months the amount of unrecognized tax benefits may change from the reevaluation of uncertain tax positions arising in examinations, in appeals, or in the courts, or from the closure of tax statutes. The Company does not expect any significant changes in unrecognized tax benefits during the next twelve months. All of the Company’s unrecognized tax benefits, if recognized, would be recorded as a component of income tax expense, therefore, affecting the effective tax rate. The Company recognizes interest and penalties, if any, related to the liability for uncertain tax positions as a component in income tax expense. The accrual for interest and penalties was not material in all or any years presented. The Company and its subsidiaries file income tax returns in the U.S. federal jurisdiction as well as in various states. In the normal course of business, the Company is subject to U.S. federal, state, and local income tax examinations by tax authorities. The Company is no longer subject to examination for tax years prior to 2013 including any related income tax filings from its recent acquisitions. The Company has been selected for audit in the state of New York for tax years 2013-2014.

DERIVATIVE INSTRUMENTS AND HEDG

DERIVATIVE INSTRUMENTS AND HEDGING ACTIVITIES	12 Months Ended
	Dec. 31, 2016
Derivative Instruments and Hedging Activities Disclosure [Abstract]
DERIVATIVE INSTRUMENTS AND HEDGING ACTIVITIES	DERIVATIVE INSTRUMENTS AND HEDGING ACTIVITIES At year-end 2016, the Company held derivatives with a total notional amount of $2.2 billion . That amount included $300 million in interest rate swap derivatives that were designated as cash flow hedges for accounting purposes. The Company also had economic hedges and non-hedging derivatives totaling $1.7 billion and $208.1 million , respectively, which are not designated as hedges for accounting purposes and are therefore recorded at fair value with changes in fair value recorded directly through earnings. Economic hedges included interest rate swaps totaling $1.3 billion , risk participation agreements with dealer banks of $83.4 million , and $259.9 million in forward commitment contracts. As part of the Company’s risk management strategy, the Company enters into interest rate swap agreements to mitigate the interest rate risk inherent in certain of the Company’s assets and liabilities. Interest rate swap agreements involve the risk of dealing with both Bank customers and institutional derivative counterparties and their ability to meet contractual terms. The agreements are entered into with counterparties that meet established credit standards and contain master netting and collateral provisions protecting the at-risk party. The derivatives program is overseen by the Risk Management Committee of the Company’s Board of Directors. Based on adherence to the Company’s credit standards and the presence of the netting and collateral provisions, the Company believes that the credit risk inherent in these contracts was not significant at December 31, 2016. The Company pledged collateral to derivative counterparties in the form of cash totaling $0.9 million and securities with an amortized cost of $47.8 million and a fair value of $47.9 million at year-end 2016. At December 31, 2015, the Company pledged cash collateral of $16.1 million and securities with an amortized cost of $24.6 million and a fair value of $24.6 million . The Company does not typically require its commercial customers to post cash or securities as collateral on its program of back-to-back economic hedges. However certain language is written into the International Swaps Dealers Association, Inc. (“ISDA”) and loan documents where, in default situations, the Bank is allowed to access collateral supporting the loan relationship to recover any losses suffered on the derivative asset or liability. The Company may need to post additional collateral in the future in proportion to potential increases in unrealized loss positions. Information about interest rate swap agreements and non-hedging derivative assets and liabilities at December 31, 2016 follows: Notional Amount Weighted Average Maturity Weighted Average Rate Estimated Fair Value Asset (Liability) December 31, 2016 Received Contract pay rate (In thousands) (In years) (In thousands) Cash flow hedges: Interest rate swaps on FHLBB borrowings 300,000 2.3 0.63 % 2.29 % (6,573 ) Total cash flow hedges 300,000 (6,573 ) Economic hedges: Interest rate swap on tax advantaged economic development bond 11,386 12.9 0.98 % 5.09 % (2,021 ) Interest rate swaps on loans with commercial loan customers 668,541 6.2 2.43 % 4.21 % (6,752 ) Reverse interest rate swaps on loans with commercial loan customers 668,541 6.2 4.21 % 2.43 % 7,077 Risk participation agreements with dealer banks 83,360 11.6 5 Forward sale commitments 259,889 0.2 722 Total economic hedges 1,691,717 (969 ) Non-hedging derivatives: Commitments to lend 208,145 0.2 4,738 Total non-hedging derivatives 208,145 4,738 Total $ 2,199,862 $ (2,804 ) Information about interest rate swap agreements and non-hedging derivative asset and liabilities at December 31, 2015 follows: Notional Amount Weighted Average Maturity Weighted Average Rate Estimated Fair Value Asset (Liability) December 31, 2015 Received Contract pay rate (In thousands) (In years) (In thousands) Cash flow hedges: Forward-starting interest rate swaps on FHLBB borrowings 300,000 3.3 0.14 % 2.29 % (8,532 ) Total cash flow hedges 300,000 (8,532 ) Economic hedges: Interest rate swap on tax advantaged economic development bond 11,984 13.9 0.61 % 5.09 % (2,450 ) Interest rate swaps on loans with commercial loan customers 457,392 6.7 2.18 % 4.49 % (17,143 ) Reverse interest rate swaps on loans with commercial loan customers 457,392 6.7 4.49 % 2.18 % 17,129 Risk participation agreements with dealer banks 59,016 15.0 (56 ) Forward sale commitments 44,840 0.2 53 Total economic hedges 1,030,624 (2,467 ) Non-hedging derivatives: Commitments to lend 36,043 0.2 323 Total non-hedging derivatives 36,043 323 Total $ 1,366,667 $ (10,676 ) Cash Flow Hedges The effective portion of unrealized changes in the fair value of derivatives accounted for as cash flow hedges is reported in other comprehensive income and subsequently reclassified to earnings in the same period or periods during which the hedged forecasted transaction affects earnings. Each quarter, the Company assesses the effectiveness of each hedging relationship by comparing the changes in cash flows of the derivative hedging instrument with the changes in cash flows of the designated hedged item or transaction. The ineffective portion of changes in the fair value of the derivatives is recognized directly in earnings. The Company has entered into six interest rate swaps contracts with an aggregate notional value of $300 million as of year-end 2016. All have durations of three years. This hedge strategy converts the one month rolling FHLBB borrowings based on the FHLBB’s one month fixed interest rate to fixed interest rates, thereby protecting the Company from floating interest rate variability. Amounts included in the Consolidated Statements of Income and in the other comprehensive income section of the Consolidated Statements of Comprehensive Income (related to interest rate derivatives designated as hedges of cash flows), were as follows: Years Ended December 31, (In thousands) 2016 2015 Interest rate swaps on FHLBB borrowings: Unrealized (loss) recognized in accumulated other comprehensive loss $ (2,023 ) $ (5,232 ) Less: Reclassification of unrealized (loss) from accumulated other comprehensive loss to interest expense (3,981 ) — Net tax effect on items recognized in accumulated other comprehensive income (835 ) 2,094 Other comprehensive income recorded in accumulated other comprehensive income, net of reclassification adjustments and tax effects $ 1,123 $ (3,138 ) Net interest expense recognized in interest expense on hedged FHLBB borrowings $ 3,981 $ — Hedge ineffectiveness on interest rate swaps designated as cash flow hedges was immaterial to the Company’s financial statements during the year-ended December 31, 2016 and 2015 . Amounts reported in accumulated other comprehensive income related to derivatives will be reclassified to interest expense as interest payments are made on the Company’s variable-rate liabilities. On February 7, 2017, the Company initiated and subsequently terminated all of its interest rate swaps associated with FHLB advances with 1-month LIBOR based floating interest rates of an aggregate notional amount of $300 million . As a result, the Company reclassified $6.6 million of losses from the effective portion of the unrealized changes in the fair value of the terminated derivatives from other comprehensive income to non-interest income as the forecasted transactions to the related FHLB advances will not occur. Economic hedges As of December 31, 2016 the Company has an interest rate swap with a $11.4 million notional amount to swap out the fixed rate of interest on an economic development bond bearing a fixed rate of 5.09% , currently within the Company’s trading portfolio under the fair value option, in exchange for a LIBOR-based floating rate. The intent of the economic hedge is to improve the Company’s asset sensitivity to changing interest rates in anticipation of favorable average floating rates of interest over the 21 -year life of the bond. The fair value changes of the economic development bond are mostly offset by fair value changes of the related interest rate swap. The Company also offers certain derivative products directly to qualified commercial borrowers. The Company economically hedges derivative transactions executed with commercial borrowers by entering into mirror-image, offsetting derivatives with third-party financial institutions. The transaction allows the Company’s customer to convert a variable-rate loan to a fixed rate loan. Because the Company acts as an intermediary for its customer, changes in the fair value of the underlying derivative contracts mostly offset each other in earnings. Credit valuation adjustments arising from the difference in credit worthiness of the commercial loan and financial institution counterparties totaled $0.8 million at year-end 2016. The interest income and expense on these mirror image swaps exactly offset each other. The Company has risk participation agreements with dealer banks. Risk participation agreements occur when the Company participates on a loan and a swap where another bank is the lead. The Company earns a fee to take on the risk associated with having to make the lead bank whole on Berkshire’s portion of the pro-rated swap should the borrower default. The Company utilizes forward sale commitments to hedge interest rate risk and the associated effects on the fair value of interest rate lock commitments and loans held for sale. The forward sale commitments are accounted for as derivatives with changes in fair value recorded in current period earnings. The company uses the following types of forward sale commitments contracts: • Best efforts loan sales, • Mandatory delivery loan sales, and • To be announced (TBA) mortgage-backed securities sales. A best efforts contract refers to a loan sales agreement where the Company commits to deliver an individual mortgage loan of a specified principal amount and quality to an investor if the loan to the underlying borrower closes. The Company may enter into a best efforts contract once the price is known, which is shortly after the potential borrower’s interest rate is locked. A mandatory delivery contract is a loan sales agreement where the Company commits to deliver a certain principal amount of mortgage loans to an investor at a specified price on or before a specified date. Generally, the Company may enter into mandatory delivery contracts shortly after the loan closes with a customer. The Company may sell to-be-announced mortgage-backed securities to hedge the changes in fair value of interest rate lock commitments and held for sale loans, which do not have corresponding best efforts or mandatory delivery contracts. These security sales transactions are closed once mandatory contracts are written. On the closing date the price of the security is locked-in, and the sale is paired-off with a purchase of the same security. Settlement of the security purchase/sale transaction is done with cash on a net-basis. Non-hedging derivatives The Company enters into commitments to lend for residential mortgage loans, which commit the Company to lend funds to a potential borrower at a specific interest rate and within a specified period of time. Commitments that relate to the origination of mortgage loans that will be held for sale are considered derivative financial instruments under applicable accounting guidance. Outstanding commitments expose the Company to the risk that the price of the mortgage loans underlying the commitments may decline due to increases in mortgage interest rates from inception of the rate lock to the funding of the loan. The commitments are free-standing derivatives which are carried at fair value with changes recorded in non-interest income in the Company’s consolidated statements of income. Changes in the fair value of commitments subsequent to inception are based on changes in the fair value of the underlying loan resulting from the fulfillment of the commitment and changes in the probability that the loan will fund within the terms of the commitment, which is affected primarily by changes in interest rates and the passage of time. Amounts included in the Consolidated Statements of Income related to economic hedges and non-hedging derivatives were as follows: Years Ended December 31, (In thousands) 2016 2015 Economic hedges Interest rate swap on industrial revenue bond: Unrealized gain (loss) recognized in other non-interest income $ (75 ) $ (344 ) Interest rate swaps on loans with commercial loan customers: Unrealized gain (loss) recognized in other non-interest income 1,312 (4,852 ) Reverse interest rate swaps on loans with commercial loan customers: Unrealized (loss) gain recognized in other non-interest income (1,312 ) 4,852 Favorable (unfavorable) change in credit valuation adjustment recognized in other non-interest income 338 (51 ) Risk Participation Agreements: Unrealized gain (loss) recognized in other non-interest income (61 ) (36 ) Forward Commitments: Unrealized (loss) recognized in other non-interest income (1,176 ) (247 ) Realized (loss) gain in other non-interest income (3,705 ) 45 Non-hedging derivatives Interest rate lock commitments: Unrealized gain recognized in other non-interest income $ 8,373 $ 2,436 Realized gain in other non-interest income 3,650 1,899 Assets and Liabilities Subject to Enforceable Master Netting Arrangements Interest Rate Swap Agreements (“Swap Agreements”) The Company enters into swap agreements to facilitate the risk management strategies for commercial banking customers. The Company mitigates this risk by entering into equal and offsetting swap agreements with highly rated third party financial institutions. The swap agreements are free-standing derivatives and are recorded at fair value in the Company’s consolidated statements of condition. The Company is party to master netting arrangements with its financial institution counterparties; however, the Company does not offset assets and liabilities under these arrangements for financial statement presentation purposes. The master netting arrangements provide for a single net settlement of all swap agreements, as well as collateral, in the event of default on, or termination of, any one contract. Collateral generally in the form of marketable securities is received or posted by the counterparty with net liability positions, respectively, in accordance with contract thresholds. The Company had net asset positions with its commercial banking counterparties totaling $11.5 million and $17.1 million as of December 31, 2016 and December 31, 2015, respectively. The Company had net liability positions with its financial institution counterparties totaling $15.4 million and $28.2 million as of December 31, 2016 and December 31, 2015 respectively. At December 31, 2016, the Company had net liability positions with its commercial banking counterparties totaling $4.4 million . At December 31, 2015, The Company did not have a net liability position with it's commercial banking counterparties. The collateral posted by the Company that covered liability positions was $19.8 million and $28.2 million as of December 31, 2016 and December 31, 2015, respectively. The following table presents the assets and liabilities subject to an enforceable master netting arrangement as of December 31, 2016 and December 31, 2015 : Offsetting of Financial Assets and Derivative Assets Gross Gross Amounts Net Amounts of Assets Gross Amounts Not Offset in the Statements Financial Cash (in thousands) Net Amount As of December 31, 2016 Interest Rate Swap Agreements: Institutional counterparties $ 49 $ — $ 49 $ — $ — $ 49 Commercial counterparties 11,461 — 11,461 — — 11,461 Total $ 11,510 $ — $ 11,510 $ — $ — $ 11,510 Offsetting of Financial Liabilities and Derivative Liabilities Gross Gross Amounts Net Amounts of Liabilities Gross Amounts Not Offset in the Statements Financial Cash (in thousands) Net Amount As of December 31, 2016 Interest Rate Swap Agreements: Institutional counterparties $ (20,077 ) $ 4,689 $ (15,388 ) $ 14,738 $ 650 $ — Commercial counterparties (4,407 ) 23 (4,384 ) — — (4,384 ) Total $ (24,484 ) $ 4,712 $ (19,772 ) $ 14,738 $ 650 $ (4,384 ) Offsetting of Financial Assets and Derivative Assets Gross Gross Amounts Net Amounts of Assets Gross Amounts Not Offset in the Statements Financial Cash (in thousands) Net Amount As of December 31, 2015 Interest Rate Swap Agreements: Institutional counterparties $ 40 $ — $ 40 $ — $ — $ 40 Commercial counterparties 17,129 — 17,129 — — 17,129 Total $ 17,169 $ — $ 17,169 $ — $ — $ 17,169 Offsetting of Financial Liabilities and Derivative Liabilities Gross Gross Amounts Net Amounts of Liabilities Gross Amounts Not Offset in the Statements Financial Cash (in thousands) Net Amount As of December 31, 2015 Institutional counterparties $ (28,220 ) $ — $ (28,220 ) $ 18,500 $ 9,720 $ — Commercial counterparties — — — — — — Total $ (28,220 ) $ — $ (28,220 ) $ 18,500 $ 9,720 $ —

OTHER COMMITMENTS, CONTINGENCIE

OTHER COMMITMENTS, CONTINGENCIES, AND OFF-BALANCE SHEET ACTIVITIES	12 Months Ended
	Dec. 31, 2016
Commitments and Contingencies Disclosure [Abstract]
OTHER COMMITMENTS, CONTINGENCIES, AND OFF-BALANCE SHEET ACTIVITIES	OTHER COMMITMENTS, CONTINGENCIES, AND OFF-BALANCE SHEET ACTIVITIES Credit Related Financial Instruments. The Company is a party to financial instruments with off-balance-sheet risk in the normal course of business to meet the financing needs of its customers. These financial instruments include commitments to extend credit and standby letters of credit. Such commitments involve, to varying degrees, elements of credit, and interest rate risk in excess of the amount recognized in the accompanying consolidated balance sheets. The Company’s exposure to credit loss in the event of non-performance by the other party to the financial instrument is represented by the contractual amount of these commitments. The Company uses the same credit policies in making commitments as it does for on-balance-sheet instruments. A summary of financial instruments outstanding whose contract amounts represent credit risk is as follows at year-end: (In thousands) 2016 2015 Commitments to originate new loans $ 243,519 $ 102,145 Unused funds on commercial and other lines of credit 574,043 525,603 Unadvanced funds on home equity lines of credit 281,621 258,897 Unadvanced funds on construction and real estate loans 320,635 201,764 Standby letters of credit 14,939 12,775 Lease obligation 11,639 11,939 Total $ 1,446,396 $ 1,113,123 Commitments to extend credit are agreements to lend to a customer as long as there is no violation of any condition established in the contract. Commitments generally have fixed expiration dates or other termination clauses and may require payment of a fee. The commitments for lines of credit may expire without being drawn upon. Therefore, the total commitment amounts do not necessarily represent future cash requirements. The Company evaluates each customer’s creditworthiness on a case-by-case basis. Standby letters of credit are conditional commitments issued by the Company to guarantee the performance of a customer to a third party. These letters of credit are primarily issued to support borrowing arrangements. The credit risk involved in issuing letters of credit is essentially the same as that involved in extending loan facilities to customers. The Company considers standby letters of credit to be guarantees and the amount of the recorded liability related to such guarantees was not material at year-end 2016 and 2015. Operating Lease Commitments. Future minimum rental payments required under operating leases at year-end 2016 are as follows: 2017 — $14.0 million ; 2018 — $11.6 million ; 2019 — $10.2 million ; 2020 — $9.6 million ; 2021 — $8.2 million ; and all years thereafter — $68.9 million . The leases contain options to extend for periods up to twenty years. The cost of such rental options is not included above. Total rent expense for the years 2016, 2015, and 2014 amounted to $8.3 million , $7.5 million , and $7.2 million , respectively. Lease Obligations. Future obligations required under the capital lease at year-end 2016 are $680 thousand in 2017; $647 thousand in 2018; $646 thousand in 2019; $644 thousand in 2020; $612 thousand in 2021 and $5.6 million all years thereafter. Amortization under the capital lease is included with premises and equipment depreciation and amortization expense. Future obligations required under the financing lease at year-end 2016 are $81 thousand in 2017; $86 thousand in 2018; $86 thousand in 2019; $86 thousand in 2020; $86 thousand in 2021; and $1.6 million all years thereafter. Amortization under the financing lease is included with premises and equipment depreciation and amortization expense. Employment and Change in Control Agreements. The Company and the Bank have entered into a three -year employment agreement with one senior executive. The Company and the Bank also have change in control agreements with several officers which provide a severance payment in the event employment is terminated in conjunction with a defined change in control. Legal Claims. Various legal claims arise from time to time in the normal course of business. As of December 31, 2016, neither the Company nor the Bank was involved in any pending legal proceedings believed by management to be material to the Company’s financial condition or results of operations. Periodically, there have been various claims and lawsuits involving the Bank, such as claims to enforce liens, condemnation proceedings on properties in which the Bank holds security interests, claims involving the making and servicing of real property loans, and other issues incident to the Bank’s business. However, other than the items noted below, neither the Company nor the Bank is a party to any pending legal proceedings that it believes, in the aggregate, would have a material adverse effect on the financial condition or operations of the Company. Additionally, an estimate of future, probable losses cannot be estimated as of December 31, 2016. On February 12, 2015, Berkshire Hills was served with a complaint in a putative class action lawsuit filed in the Superior Court of the Commonwealth of Massachusetts for Hampden County against Hampden Bancorp, Inc. (“Hampden”), the Directors of Hampden and the Company, in connection with a pending transaction through which Hampden was acquired by Berkshire Hills on April 17, 2015 (the “Hampden shareholder litigation”). The complaint was filed by an individual Hampden shareholder and alleged that (i) the directors of Hampden breached their fiduciary duties to its stockholders by, among other things, failing to take steps necessary to obtain a fair and adequate price for Hampden’s common stock, (ii) Hampden and its directors failed to disclose material facts in its proxy solicitation materials for its shareholder vote to approve the transaction set forth in the Merger Agreement, and (iii) the Company knowingly aided and abetted Hampden’s directors’ breach of fiduciary duty. On April 28, 2016, Berkshire Hills and Berkshire Bank were served with a complaint filed in the United States District Court, District of Massachusetts, Springfield Division. The complaint was filed by an individual Berkshire Bank depositor, who claims to have filed the complaint on behalf of a purported class of Berkshire Bank depositors, and alleges violations of the Electronic Funds Transfer Act and certain regulations thereunder, among other matters. On July 15, 2016, the complaint was amended to add purported claims under the Massachusetts Consumer Protection Act. The complaint seeks, in part, compensatory, consequential, statutory, and punitive damages. Berkshire Hills and Berkshire Bank deny the allegations contained in the complaint and are vigorously defending this lawsuit. On November 3, 2016, the Massachusetts Supreme Judicial Court issued a slip opinion containing an appellate ruling in favor of the Massachusetts Insurers Insolvency Fund (the “Fund”) in a civil case entitled, Massachusetts Insurers Insolvency Fund v. Berkshire Bank, Appeal no. SJC-12019. At issue in this case is the Fund’s right to recover from Berkshire Bank under M.G.L Ch. 175D, § 17 (3), workers compensation benefits paid by the Fund to a former employee after the workers compensation insurer previously responsible for paying those benefits failed. In earlier proceedings in the Massachusetts Superior Court, the trial judge had entered summary judgment in Berkshire Bank’s favor, finding that Berkshire Bank had no liability to the Fund in this instance. The Supreme Judicial Court reversed and remanded the case to the trial court for entry of judgment in favor of the Fund on the issue of liability. The case was originally bifurcated in the trial court to resolve the issue of liability first, and no evidence has been presented to date regarding the amount of any damages that Berkshire Bank may owe to the Fund. Further proceedings will now be required in the trial court to determine the amount of any such damages. On December 22, 2016, Berkshire Bank was served with a complaint filed in the United States District Court, District of Massachusetts, Springfield Division. The complaint was filed by an individual Berkshire Bank depositor and alleges violations of federal and state electronic funds transfer statutes and the Massachusetts Uniform Commercial Code in connection with two wire transfers totaling $1.4 million , which were initiated from the customer’s account after his personal email account was allegedly hacked. Berkshire Bank denies the allegations contained in the complaint and is vigorously defending this lawsuit.

SHAREHOLDERS' EQUITY AND EARNIN

SHAREHOLDERS' EQUITY AND EARNINGS PER COMMON SHARE	12 Months Ended
	Dec. 31, 2016
Stockholders' Equity Note [Abstract]
SHAREHOLDERS' EQUITY AND EARNINGS PER COMMON SHARE	SHAREHOLDERS’ EQUITY AND EARNINGS PER COMMON SHARE Minimum Regulatory Capital Requirements The Company and Bank are subject to various regulatory capital requirements administered by the federal and state banking agencies. Failure to meet minimum capital requirements can initiate certain mandatory and possibly additional discretionary actions by regulators that, if imposed, could have a direct material impact on the Company’s financial statements. Under capital adequacy guidelines and the regulatory framework for prompt corrective action, the Company and Bank must meet specific capital guidelines that involve quantitative measures of its assets, liabilities and certain off-balance-sheet items as calculated under regulatory accounting practices. The capital amounts and classification are also subject to qualitative judgments by the regulators about components, risk weighting and other factors. Quantitative measures established by regulation to ensure capital adequacy require the Company and Bank to maintain minimum amounts and ratios (set forth in the following table) of total and Tier 1 capital (as defined in the regulations) to risk-weighted assets (as defined) and of Tier 1 capital to average assets (as defined). As of year-end 2016 and 2015, the Bank and the Company met the capital adequacy requirements. Regulators may set higher expected capital requirements in some cases based on their examinations. Effective January 1, 2015, the Company and the Bank became subject to the Basel III rule that requires the Company and the Bank to assess their Common equity tier 1 capital to risk weighted assets and the Company and the Bank each exceed the minimum to be well capitalized. In addition, the final capital rules added a requirement to maintain a minimum conservation buffer, composed of Common equity tier 1 capital, of 2.5% of risk-weighted assets, to be phased in over three years and applied to the Common equity tier 1 risk-based capital ratio, the Tier 1 risk-based capital ratio and the Total risk-based capital ratio. Accordingly, banking organizations, on a fully phased in basis no later than January 1, 2019, must maintain a minimum Common equity tier 1 risk-based capital ratio of 7.0%, a minimum Tier 1 risk-based capital ratio of 8.5% and a minimum Total risk-based capital ratio of 10.5%. The required minimum conservation buffer began to be phased in incrementally, starting at 0.625% on January 1, 2016 and will increase to 1.25% on January 1, 2017, 1.875% on January 1, 2018 and 2.5% on January 1, 2019. The final capital rules impose restrictions on capital distributions and certain discretionary cash bonus payments if the minimum capital conservation buffer is not met. At December 31, 2016, the capital levels of both the Company and the Bank exceeded all regulatory capital requirements and their regulatory capital ratios were above the minimum levels required to be considered well capitalized for regulatory purposes. The capital levels of both the Company and the Bank at December 31, 2016 also exceeded the minimum capital requirements including the currently applicable capital conservation buffer of 0.625%. As of year-end 2016 and 2015 , the Bank and the Company met the conditions to be classified as “well capitalized” under the relevant regulatory framework. To be categorized as well capitalized, an institution must maintain minimum total risk-based, Tier 1 risk-based, and Tier 1 leverage ratios as set forth in the following tables. The Company and Bank’s actual and required capital amounts were as follows: Minimum Capital Requirement Minimum to be Well Capitalized Under Prompt Corrective Action Provisions Actual (Dollars in thousands) Amount Ratio Amount Ratio Amount Ratio December 31, 2016 Company (Consolidated) Total capital to risk-weighted assets $ 803,618 11.87 % $ 541,603 8.00 % $ 677,004 10.00 % Common Equity Tier 1 Capital to risk weighted assets 670,120 9.90 304,652 4.50 440,053 6.50 Tier 1 capital to risk-weighted assets 681,500 10.07 406,202 6.00 541,603 8.00 Tier 1 capital to average assets 681,500 7.88 270,802 4.00 338,502 5.00 Bank Total capital to risk-weighted assets $ 756,792 11.21 % $ 539,893 8.00 % $ 674,866 10.00 % Common Equity Tier 1 Capital to risk weighted assets 672,244 9.96 303,690 4.50 438,663 6.50 Tier 1 capital to risk-weighted assets 672,244 9.96 404,920 6.00 539,893 8.00 Tier 1 capital to average assets 672,244 7.84 269,920 4.00 337,433 5.00 December 31, 2015 Company (Consolidated) Total capital to risk-weighted assets $ 686,489 11.91 % $ 461,231 8.00 % $ 576,539 10.00 % Common Equity Tier 1 Capital to risk weighted assets 564,878 9.80 259,443 4.50 374,750 6.50 Tier 1 capital to risk-weighted assets 573,033 9.94 345,924 6.00 461,231 8.00 Tier 1 capital to average assets 573,033 7.71 297,420 4.00 371,775 5.00 Bank Total capital to risk-weighted assets $ 642,866 11.16 % $ 460,882 8.00 % $ 576,103 10.00 % Common Equity Tier 1 Capital to risk weighted assets 569,131 9.88 259,246 4.50 374,467 6.50 Tier 1 capital to risk-weighted assets 569,131 9.88 345,662 6.00 460,882 8.00 Tier 1 capital to average assets 569,131 7.66 297,313 4.00 371,641 5.00 Common stock The Bank is subject to dividend restrictions imposed by various regulators, including a limitation on the total of all dividends that the Bank may pay to the Company in any calendar year. The total of all dividends shall not exceed the Bank’s net income for the current year (as defined by statute), plus the Bank’s net income retained for the two previous years, without regulatory approval. Dividends from the Bank are an important source of funds to the Company to make dividend payments on its common and preferred stock, to make payments on its borrowings, and for its other cash needs. The ability of the Company and the Bank to pay dividends is dependent on regulatory policies and regulatory capital requirements. The ability to pay such dividends in the future may be adversely affected by new legislation or regulations, or by changes in regulatory policies relating to capital, safety and soundness, and other regulatory concerns. The payment of dividends by the Company is subject to Delaware law, which generally limits dividends to an amount equal to an excess of the net assets of a company (the amount by which total assets exceed total liabilities) over statutory capital, or if there is no excess, to the Company’s net profits for the current and/or immediately preceding fiscal year. Accumulated other comprehensive income Year-end components of accumulated other comprehensive income/(loss) are as follows: (In thousands) 2016 2015 Other accumulated comprehensive income/(loss), before tax: Net unrealized holding gain on AFS securities $ 25,176 $ 6,316 Net (loss) on effective cash flow hedging derivatives (6,573 ) (8,532 ) Net unrealized holding (loss) on pension plans (2,954 ) (3,469 ) Income taxes related to items of accumulated other comprehensive income/(loss): Net unrealized holding (gain) on AFS securities (9,636 ) (2,437 ) Net loss on effective cash flow hedging derivatives 2,589 3,424 Net unrealized holding loss on pension plans 1,164 1,392 Accumulated other comprehensive income/(loss) $ 9,766 $ (3,305 ) The following table presents the components of other comprehensive income (loss) for the years ended December 31, 2016, 2015, and 2014: (In thousands) Before Tax Tax Effect Net of Tax Year Ended December 31, 2016 Net unrealized holding gain on AFS securities: Net unrealized gain arising during the period $ 18,309 $ (6,979 ) $ 11,330 Less: reclassification adjustment for (losses) realized in net income (551 ) 220 (331 ) Net unrealized holding gain on AFS securities 18,860 (7,199 ) 11,661 Net loss on cash flow hedging derivatives: Net unrealized (loss) arising during the period (2,023 ) 754 (1,269 ) Less: reclassification adjustment for (losses) realized in net income (3,981 ) 1,589 (2,392 ) Net gain on cash flow hedging derivatives 1,958 (835 ) 1,123 Net unrealized holding gain on pension plans Net unrealized gain arising during the period 351 (155 ) 196 Less: reclassification adjustment for losses realized in net income 164 (73 ) 91 Net unrealized holding gain on pension plans 515 (228 ) 287 Other Comprehensive Income $ 21,333 $ (8,262 ) $ 13,071 (In thousands) Before Tax Tax Effect Net of Tax Year Ended December 31, 2015 Net unrealized holding (loss) on AFS securities: Net unrealized (loss) arising during the period $ (7,567 ) $ 2,793 $ (4,774 ) Less: reclassification adjustment for gains realized in net income 2,110 (847 ) 1,263 Net unrealized holding (loss) on AFS securities (9,677 ) 3,640 (6,037 ) Net (loss) on cash flow hedging derivatives: Net unrealized (loss) arising during the period (5,232 ) 2,094 (3,138 ) Less: reclassification adjustment for (losses) realized in net income — — — Net (loss) on cash flow hedging derivatives (5,232 ) 2,094 (3,138 ) Net unrealized holding (loss) on pension plans Net unrealized (loss) arising during the period (1,436 ) 572 (864 ) Less: reclassification adjustment for (losses) gains realized in net income (259 ) 104 (155 ) Net unrealized holding (loss) on pension plans (1,177 ) 468 (709 ) Other Comprehensive Loss $ (16,086 ) $ 6,202 $ (9,884 ) (In thousands) Before Tax Tax Effect Net of Tax Year Ended December 31, 2014 Net unrealized holding gain on AFS securities: Net unrealized gain arising during the period $ 25,769 $ (9,791 ) $ 15,978 Less: reclassification adjustment for gains realized in net income 482 (196 ) 286 Net unrealized holding gain on AFS securities 25,287 (9,595 ) 15,692 Net (loss) on cash flow hedging derivatives: Net unrealized (loss) arising during the period (6,403 ) 2,608 (3,795 ) Less: reclassification adjustment for (losses) realized in net income (5,393 ) 2,201 (3,192 ) Net (loss) on cash flow hedging derivatives (1,010 ) 407 (603 ) Net loss on terminated swap: Net unrealized (loss) arising during the period — — — Less: reclassification adjustment for (losses) realized in net income (3,237 ) 1,312 (1,925 ) Net loss on terminated swap 3,237 (1,312 ) 1,925 Net unrealized holding (loss) on pension plans Net unrealized (loss) arising during the period (2,308 ) 930 (1,378 ) Less: reclassification adjustment for gains (losses) realized in net income — — — Net unrealized holding (loss) on pension plans (2,308 ) 930 (1,378 ) Other Comprehensive Income $ 25,206 $ (9,570 ) $ 15,636 The following table presents the changes in each component of accumulated other comprehensive income (loss), for the years ended December 31, 2016 , 2015 , and 2014: (in thousands) Net unrealized holding gain (loss) on AFS Securities Net loss on effective cash flow hedging derivatives Net loss on terminated swap Net unrealized holding gain (loss) on pension plans Total Year Ended December 31, 2016 Balance at Beginning of Year $ 3,880 $ (5,108 ) $ — $ (2,077 ) $ (3,305 ) Other Comprehensive Gain (Loss) before reclassifications 11,330 (1,269 ) — 196 10,257 Amounts Reclassified from Accumulated other comprehensive income (331 ) (2,392 ) — (91 ) (2,814 ) Total Other Comprehensive Income 11,661 1,123 — 287 13,071 Balance at End of Period $ 15,541 $ (3,985 ) $ — $ (1,790 ) $ 9,766 Year Ended December 31, 2015 Balance at Beginning of Year $ 9,916 $ (1,969 ) $ — $ (1,368 ) $ 6,579 Other Comprehensive (Loss) before reclassifications (4,774 ) (3,138 ) — (864 ) (8,776 ) Amounts Reclassified from Accumulated other comprehensive income 1,263 — — (155 ) 1,108 Total Other Comprehensive Loss (6,037 ) (3,138 ) — (709 ) (9,884 ) Balance at End of Period $ 3,880 $ (5,108 ) $ — $ (2,077 ) $ (3,305 ) Year Ended December 31, 2014 Balance at Beginning of Year $ (5,776 ) $ (1,366 ) $ (1,925 ) $ 10 $ (9,057 ) Other Comprehensive Gain (Loss) Before reclassifications 15,978 (3,795 ) — (1,378 ) 10,805 Amounts Reclassified from Accumulated other comprehensive income 286 (3,192 ) (1,925 ) — (4,831 ) Total Other Comprehensive Income 15,692 (603 ) 1,925 (1,378 ) 15,636 Balance at End of Period $ 9,916 $ (1,969 ) $ — $ (1,368 ) $ 6,579 The following table presents the amounts reclassified out of each component of accumulated other comprehensive income (loss) for the years ended December 31, 2016 , 2015 , and 2014: Affected Line Item in the Years Ended December 31, (in thousands) 2016 2015 2014 Realized (losses) gains on AFS securities: $ (551 ) $ 2,110 $ 482 Non-interest income 220 (847 ) (196 ) Tax expense (331 ) 1,263 286 Realized (losses) on cash flow hedging derivatives: (3,981 ) — (5,393 ) Interest income 1,589 — 2,201 Tax expense (2,392 ) — (3,192 ) Amortization of realized (losses) on terminated swap: — — (3,237 ) Interest income — — 1,312 Tax expense — — (1,925 ) Realized (losses) on pension plans 164 (259 ) — Non-interest expense (73 ) 104 — Tax expense 91 (155 ) — Total reclassifications for the period $ (2,632 ) $ 1,108 $ (4,831 ) Earnings Per Common Share Basic earnings per common share (“EPS”) excludes dilution and is computed by dividing net income applicable to common stock by the weighted average number of common shares outstanding for the year. Diluted EPS reflects the potential dilution that could occur if securities or other contracts to issue common stock (such as stock options) were exercised or converted into additional common shares that would then share in the earnings of the entity. Diluted EPS is computed by dividing net income applicable to common stock by the weighted average number of common shares outstanding for the year, plus an incremental number of common-equivalent shares computed using the treasury stock method. Earnings per common share has been computed based on the following (average diluted shares outstanding is calculated using the treasury stock method): Years Ended December 31, (In thousands, except per share data) 2016 2015 2014 Net income $ 58,670 $ 49,518 $ 33,744 Average number of common shares issued 32,604 30,074 26,525 Less: average number of treasury shares 1,116 1,215 1,386 Less: average number of unvested stock award shares 500 466 409 Average number of basic common shares outstanding 30,988 28,393 24,730 Plus: dilutive effect of unvested stock award shares 122 106 67 Plus: dilutive effect of stock options outstanding 57 65 57 Average number of diluted common shares outstanding 31,167 28,564 24,854 Basic earning per share $ 1.89 $ 1.74 $ 1.36 Diluted earnings per share $ 1.88 $ 1.73 $ 1.36 For the year ended 2016, 52 thousand options were anti-dilutive and therefore excluded from the earnings per share calculations. For the year ended 2015, 200 thousand options were anti-dilutive and therefore excluded from the earnings per share calculations. For the year ended 2014, 225 thousand options were anti-dilutive and therefore excluded from the earnings per share calculations.

STOCK-BASED COMPENSATION PLANS

STOCK-BASED COMPENSATION PLANS	12 Months Ended
	Dec. 31, 2016
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
STOCK-BASED COMPENSATION PLANS	STOCK-BASED COMPENSATION PLANS The 2013 Equity Incentive Plan (the “2013 Plan”) permits the granting of a combination of Restricted Stock awards and incentive and non-qualified stock options (“Stock Options”) to employees and directors. A total of 1.0 million shares was authorized under the Plan. Awards may be granted as either Restricted Stock or Stock Options provided that any shares that are granted as Restricted Stock are counted against the share limit set forth as (1) three for every one share of Restricted Stock granted and (2) one for every one share of Stock Option granted. As of year-end 2016, the Company had the ability to grant approximately 611 thousand shares under this plan. The 2011 Equity Incentive Plan (the “2011 Plan”) permits the granting of a combination of Restricted Stock awards and incentive and non-qualified stock options to employees and directors. A total of 1.4 million shares was authorized under the Plan. Awards may be granted as either Restricted Stock or Stock Options provided that any shares that are granted as Restricted Stock are counted against the share limit set forth as (1) three for every one share of Restricted Stock granted and (2) one for every one share of Stock Option granted. As of year-end 2016, the Company had the ability to grant approximately 12 thousand shares under this plan. A summary of activity in the Company’s stock compensation plans is shown below: Non-vested Stock Stock Options Outstanding (Shares in thousands) Number of Shares Weighted- Average Number of Shares Weighted- Average Exercise Price Balance, December 31, 2015 488 $ 25.09 265 $ 21.11 Granted 211 26.81 — — Stock options exercised — — (151 ) 24.68 Stock awards vested (181 ) 24.44 — — Forfeited (70 ) 25.48 — — Expired — — (5 ) 28.49 Balance, December 31, 2016 448 $ 26.28 109 $ 15.72 Stock Awards The total compensation cost for stock awards recognized as expense was $4.6 million , $4.7 million , and $3.8 million , in the years 2016, 2015, and 2014, respectively. The total recognized tax benefit associated with this compensation cost was $1.8 million , $1.9 million , and $1.5 million , respectively. The weighted average fair value of stock awards granted was $26.81 , $26.66 , and $24.60 in 2016, 2015, and 2014, respectively. Stock awards vest over periods up to five years and are valued at the closing price of the stock on the grant date. The total fair value of stock awards vested during 2016, 2015, and 2014 was $4.4 million , $3.4 million , and $2.0 million respectively. The unrecognized stock-based compensation expense related to unvested stock awards was $6.4 million as of year-end 2016. This amount is expected to be recognized over a weighted average period of two years. Option Awards Option awards are granted with an exercise price equal to the market price of the Company’s stock at the date of grant, and vest over periods up to five years. The options grant the holder the right to acquire a share of the Company’s common stock for each option held, and have a contractual life of ten years. As of year-end 2016, the weighted average remaining contractual term for options outstanding is two years. The Company generally issues shares from treasury stock as options are exercised. The fair value of each option grant is estimated on the date of grant using the Black-Scholes option-pricing model. The expected dividend yield and expected term are based on management estimates. The expected volatility is based on historical volatility. The risk-free interest rates for the expected term are based on the U.S. Treasury yield curve in effect at the time of the grant. The Company acquired options in the Beacon transaction in 2012, but did not grant additional options in 2016, 2015, or 2014. The total intrinsic value of options exercised was $879.6 thousand , $210.0 thousand , and $1.2 million for the years 2016, 2015, and 2014, respectively. There was no expense pertaining to options vesting in 2016 and 2015. The expense pertaining to options vesting in the 2014 was $41 thousand . There was no tax benefit associated with stock option expense in 2016 or 2015. The total recognized tax benefit associated with stock option expense for 2014 was $16 thousand . There was no unrecognized stock-based compensation expense related to unvested stock options as of year-ends 2016, 2015, and 2014.

FAIR VALUE MEASUREMENTS

FAIR VALUE MEASUREMENTS	12 Months Ended
	Dec. 31, 2016
Fair Value Disclosures [Abstract]
FAIR VALUE MEASUREMENTS	FAIR VALUE MEASUREMENTS A description of the valuation methodologies used for instruments measured at fair value, as well as the general classification of such instruments pursuant to the valuation hierarchy, is set forth below. These valuation methodologies were applied to all of the Company’s financial assets and financial liabilities that are carried at fair value. Recurring Fair Value Measurements of Financial Instruments The following table summarizes assets and liabilities measured at fair value on a recurring basis as of year-end 2016 and 2015 segregated by the level of the valuation inputs within the fair value hierarchy utilized to measure fair value: December 31, 2016 (In thousands) Level 1 Level 2 Level 3 Total Trading security $ — $ — $ 13,229 $ 13,229 Available-for-sale securities: Municipal bonds and obligations — 119,816 — 119,816 Agency collateralized mortgage obligations — 651,911 — 651,911 Agency residential mortgage-backed securities — 228,684 — 228,684 Agency commercial mortgage-backed securities — 64,534 — 64,534 Corporate bonds — 56,006 — 56,006 Trust preferred securities — 11,887 — 11,887 Other bonds and obligations — 11,158 — 11,158 Marketable equity securities 62,284 3,257 — 65,541 Loans held for sale — 120,673 — 120,673 Derivative assets 622 16,157 4,838 21,617 Other assets — — 798 798 Derivative liabilities — 24,420 — 24,420 December 31, 2015 (In thousands) Level 1 Level 2 Level 3 Total Trading security $ — $ — $ 14,189 $ 14,189 Available-for-sale securities: Municipal bonds and obligations — 104,561 — 104,561 Agency collateralized mortgage obligations — 833,036 — 833,036 Agency residential mortgage-backed securities — 126,829 — 126,829 Agency commercial mortgage-backed securities — — — — Corporate bonds — 41,023 — 41,023 Trust preferred securities — 11,900 — 11,900 Other bonds and obligations — 3,141 — 3,141 Marketable equity securities 32,925 334 708 33,967 Loans held for sale — 13,191 — 13,191 Derivative assets 45 17,130 332 17,507 Other assets — — — — Derivative liabilities — 28,181 — 28,181 During the year ended December 31, 2016, the Company had one transfer of $708 thousand in marketable equity securities from Level 3 to Level 2 based on a change in valuation technique driven by the availability of market data. There were no transfers between Level 1, 2, and 3 during the year ended December 31, 2015. Trading Security at Fair Value. The Company holds one security designated as a trading security. It is a tax advantaged economic development bond issued to the Company by a local nonprofit which provides wellness and health programs. The determination of the fair value for this security is determined based on a discounted cash flow methodology. Certain inputs to the fair value calculation are unobservable and there is little to no market activity in the security; therefore, the security meets the definition of a Level 3 security. The discount rate used in the valuation of the security is sensitive to movements in the 3-month LIBOR rate. Securities Available for Sale . AFS securities classified as Level 1 consist of publicly-traded equity securities for which the fair values can be obtained through quoted market prices in active exchange markets. AFS securities classified as Level 2 include most of the Company’s debt securities. The pricing on Level 2 was primarily sourced from third party pricing services, overseen by management, and is based on models that consider standard input factors such as dealer quotes, market spreads, cash flows, the U.S. Treasury yield curve, live trading levels, trade execution data, market consensus prepayment speeds, credit information and the bond’s terms and condition, among other things. Loans held for sale. The Company elected the fair value option for all loans originated for sale (HFS) that were originated for sale on or after May 1, 2012. Loans HFS are classified as Level 2 as the fair value is based on input factors such as quoted prices for similar loans in active markets. Aggregate Aggregate Aggregate Fair Value December 31, 2016 (In thousands) Loans Held for Sale $ 120,673 $ 118,178 $ 2,495 Aggregate Aggregate Aggregate Fair Value December 31, 2015 (In thousands) Loans Held for Sale $ 13,191 $ 12,914 $ 277 The changes in fair value of loans held for sale for years ended December 31, 2016 and 2015 were gains of $2.2 million and losses of $331 thousand , respectively. The changes in fair value are included in mortgage banking income in the Consolidated Statements of Income. Interest Rate Swaps. The valuation of the Company’s interest rate swaps is obtained from a third-party pricing service and is determined using a discounted cash flow analysis on the expected cash flows of each derivative. The pricing analysis is based on observable inputs for the contractual terms of the derivatives, including the period to maturity and interest rate curves. The Company incorporates credit valuation adjustments to appropriately reflect both its own nonperformance risk and the respective counterparty’s nonperformance risk in the fair value measurements. In adjusting the fair value of its derivative contracts for the effect of nonperformance risk, the Company has considered the impact of netting and any applicable credit enhancements, such as collateral postings. Although the Company has determined that the majority of the inputs used to value its interest rate derivatives fall within Level 2 of the fair value hierarchy, the credit valuation adjustments associated with its derivatives utilize Level 3 inputs, such as estimates of current credit spreads to evaluate the likelihood of default by itself and its counterparties. However, as of year-end 2016, the Company has assessed the significance of the impact of the credit valuation adjustments on the overall valuation of its derivative positions and has determined that the credit valuation adjustments are not significant to the overall valuation of its derivatives. As a result, the Company has determined that its derivative valuations in their entirety are classified in Level 2 of the fair value hierarchy. Commitments to Lend. The Company enters into commitments to lend for residential mortgage loans intended for sale, which commit the Company to lend funds to a potential borrower at a certain interest rate and within a specified period of time. The estimated fair value of commitments to originate residential mortgage loans for sale is based on quoted prices for similar loans in active markets. However, this value is adjusted by a factor which considers the likelihood that the loan commitment will ultimately close, and by the non-refundable costs of originating the loan. The closing ratio is derived from the Bank’s internal data and is adjusted using significant management judgment. The costs to originate are primarily based on the Company’s internal commission rates that are not observable. As such, these commitments to lend are classified as Level 3 measurements. Forward Sale Commitments . The Company utilizes forward sale commitments as economic hedges against potential changes in the values of the commitments to lend and loans originated for sale. To be announced (TBA) mortgage-backed securities forward commitment sales are used as hedging instruments, are classified as Level 1, and consist of publicly-traded debt securities for which identical fair values can be obtained through quoted market prices in active exchange markets. The fair values of the Company’s best efforts and mandatory delivery loan sale commitments are determined similarly to the commitments to lend using quoted prices in the market place that are observable. However, costs to originate and closing ratios included in the calculation are internally generated and are based on management’s judgment and prior experience, which are considered factors that are not observable. As such, best efforts and mandatory forward sale commitments are classified as Level 3 measurements. Capitalized Servicing Rights. The Company accounts for certain capitalized servicing rights at fair value in its Consolidated Financial Statements, as the Company is permitted to elect the fair value option for each specific instrument. A loan servicing right asset represents the amount by which the present value of the estimated future net cash flows to be received from servicing loans exceed adequate compensation for performing the servicing. The fair value of servicing rights is estimated using a present value cash flow model. The most important assumptions used in the valuation model are the anticipated rate of the loan prepayments and discount rates. Although some assumptions in determining fair value are based on standards used by market participants, some are based on unobservable inputs and therefore are classified in Level 3 of the valuation hierarchy. The table below presents the changes in Level 3 assets that were measured at fair value on a recurring basis at year-end 2016 and 2015 : Assets (Liabilities) (In thousands) Trading Securities Available for Sale Commitments to Lend Forward Capitalized Servicing Rights Balance as of December 31, 2014 $ 14,909 $ 2,326 $ 625 $ (93 ) Sale of AFS Security — (1,327 ) — — — Unrealized (loss) gain, net recognized in other non-interest income (150 ) — 4,364 102 — Unrealized gain included in accumulated other comprehensive loss — (291 ) — — — Paydown of trading security (570 ) — — — — Transfers to loans held for sale — — (4,666 ) — — Balance as of December 31, 2015 $ 14,189 $ 708 $ 323 $ 9 $ — Amounts acquired from First Choice Bank — — 3,900 — 696 Unrealized (loss) gain, net recognized in other non-interest income (362 ) — 13,563 91 102 Unrealized gain included in accumulated other comprehensive loss — — — — — Transfers to Level 2 — (708 ) — — — Paydown of trading security (598 ) — — — — Transfers to loans held for sale — — (13,048 ) — — Balance as of December 31, 2016 $ 13,229 $ — $ 4,738 $ 100 $ 798 Unrealized gains (losses) relating to instruments still held at December 31, 2016 $ 1,843 $ — $ 4,738 $ 100 $ 102 Unrealized gains (losses) relating to instruments still held at December 31, 2015 $ 2,204 $ (61 ) $ 323 $ 9 $ — Quantitative information about the significant unobservable inputs within Level 3 recurring assets/(liabilities) as of December 31, 2016 and 2015 are as follows: Fair Value Significant Unobservable Input Value (In thousands) December 31, 2016 Valuation Techniques Unobservable Inputs Assets Trading Security $ 13,229 Discounted Cash Flow Discount Rate 2.62 % Forward Commitments 100 Historical Trend Closing Ratio 80.36 % Pricing Model Origination Costs, per loan $ 3,692 Commitments to Lend 4,738 Historical Trend Closing Ratio 80.36 % Pricing Model Origination Costs, per loan $ 3,692 Capitalized Servicing Rights 798 Discounted cash flow Constant prepayment rate (CPR) 10.40 % Discount rate 11.00 % Total $ 18,865 Fair Value Significant (In thousands) December 31, 2015 Valuation Techniques Unobservable Inputs Assets Trading Security $ 14,189 Discounted Cash Flow Discount Rate 2.49 % Securities Available for Sale 708 Pricing Model Median Peer Price/ Tangible Book Value Percentage Multiple 88.52 % Forward Commitments 9 Historical Trend Closing Ratio 92.57 % Pricing Model Origination Costs, per loan $ 2,500 Commitments to Lend 323 Historical Trend Closing Ratio 92.57 % Pricing Model Origination Costs, per loan $ 2,500 Total $ 15,229 Non-Recurring Fair Value Measurements The Company is required, on a non-recurring basis, to adjust the carrying value or provide valuation allowances for certain assets using fair value measurements in accordance with GAAP. The following is a summary of applicable non-recurring fair value measurements. There are no liabilities measured on a non-recurring basis. December 31, 2016 Fair Value Measurements as of December 31, 2016 (In thousands) Level 3 Level 3 Inputs Assets Impaired loans $ 17,761 December 2016 Capitalized servicing rights 10,726 December 2016 Other real estate owned 151 Feb. 2016 - July 2016 Total $ 28,638 December 31, 2015 Fair Value Measurements as of December 31, 2015 (In thousands) Level 3 Level 3 Assets Impaired loans $ 11,657 December 2015 Capitalized servicing rights 5,187 November 2015 Other real estate owned 1,725 Feb. 2014 - October 2015 Total $ 18,569 Quantitative information about the significant unobservable inputs within Level 3 non-recurring assets as of December 31, 2016 and 2015 are as follows: (in thousands) December 31, 2016 Valuation Techniques Unobservable Inputs Range (Weighted Average) (a) Assets Impaired loans $ 17,761 Fair value of collateral Loss severity 0% to 88.70% (9.73%) Appraised value $0 to $2,192 ($1,026) Capitalized servicing rights 10,726 Discounted cash flow Constant prepayment rate (CPR) 7.35% to 14.28% (10.44%) Discount rate 10.00% to 14.00% (11.77%) Other real estate owned 151 Fair value of collateral Appraised value $101 to $129 ($122) Total Assets $ 28,638 (a) Where dollar amounts are disclosed, the amounts represent the lowest and highest fair value of the respective assets in the population except for adjustments for market/property conditions, which represents the range of adjustments to individuals properties. (in thousands) December 31, 2015 Valuation Techniques Unobservable Inputs Range (Weighted Average) (a) Assets Impaired loans $ 11,657 Fair value of collateral Loss severity .05% to 29.50% (7.55%) Appraised value $46.3 to $1962.0 ($999.7) Capitalized servicing rights 5,187 Discounted cash flow Constant prepayment rate (CPR) 7.17% to 12.06% (10.02%) Discount rate 10.00% to 15.00 (10.88%) Other real estate owned 1,725 Fair value of collateral Appraised value $39 to $1,200.0 ($919.9) Total Assets $ 18,569 (a) Where dollar amounts are disclosed, the amounts represent the lowest and highest fair value of the respective assets in the population except for adjustments for market/property conditions, which represents the range of adjustments to individuals properties. There were no Level 1 or Level 2 nonrecurring fair value measurements for year-end 2016 and 2015 . Impaired Loans. Loans are generally not recorded at fair value on a recurring basis. Periodically, the Company records non-recurring adjustments to the carrying value of loans based on fair value measurements for partial charge-offs of the uncollectible portions of those loans. Non-recurring adjustments can also include certain impairment amounts for collateral-dependent loans calculated when establishing the allowance for credit losses. Such amounts are generally based on the fair value of the underlying collateral supporting the loan and, as a result, the carrying value of the loan less the calculated valuation does not necessarily represent the fair value of the loan. Real estate collateral is typically valued using appraisals or other indications of value based on recent comparable sales of similar properties or assumptions generally observable in the marketplace. However, the choice of observable data is subject to significant judgment, and there are often adjustments based on judgment in order to make observable data comparable and to consider the impact of time, the condition of properties, interest rates, and other market factors on current values. Additionally, commercial real estate appraisals frequently involve discounting of projected cash flows, which relies inherently on unobservable data. Therefore, real estate collateral related nonrecurring fair value measurement adjustments have generally been classified as Level 3. Estimates of fair value for other collateral that supports commercial loans are generally based on assumptions not observable in the marketplace and therefore such valuations have been classified as Level 3. Capitalized loan servicing rights . A loan servicing right asset represents the amount by which the present value of the estimated future net cash flows to be received from servicing loans exceed adequate compensation for performing the servicing. The fair value of servicing rights is estimated using a present value cash flow model. The most important assumptions used in the valuation model are the anticipated rate of the loan prepayments and discount rates. Adjustments are only recorded when the discounted cash flows derived from the valuation model are less than the carrying value of the asset. Although some assumptions in determining fair value are based on standards used by market participants, some are based on unobservable inputs and therefore are classified in Level 3 of the valuation hierarchy. Other real estate owned (“OREO”). OREO results from the foreclosure process on residential or commercial loans issued by the Bank. Upon assuming the real estate, the Company records the property at the fair value of the asset less the estimated sales costs. Thereafter, OREO properties are recorded at the lower of cost or fair value less the estimated sales costs. OREO fair values are primarily determined based on Level 3 data including sales comparables and appraisals. Summary of Estimated Fair Values of Financial Instruments The estimated fair values, and related carrying amounts, of the Company’s financial instruments follow. Certain financial instruments and all non-financial instruments are excluded from disclosure requirements. Accordingly, the aggregate fair value amounts presented herein may not necessarily represent the underlying fair value of the Company. December 31, 2016 Carrying Fair (In thousands) Level 1 Level 2 Level 3 Financial Assets Cash and cash equivalents $ 113,075 $ 113,075 $ 113,075 $ — $ — Trading security 13,229 13,229 — — 13,229 Securities available for sale 1,209,537 1,209,537 62,284 1,147,253 — Securities held to maturity 334,368 337,680 — 300,806 36,874 FHLB stock and restricted equity securities 71,112 71,112 — 71,112 — Net loans 6,505,789 6,532,745 — — 6,532,745 Loans held for sale 120,673 120,673 — 120,673 — Accrued interest receivable 26,113 26,113 — 26,113 — Cash surrender value of bank-owned life insurance policies 139,257 139,257 — 139,257 — Derivative assets 21,617 21,617 622 16,157 4,838 Assets held for sale 322 322 — 322 — Financial Liabilities Total deposits 6,622,092 6,624,108 — 6,624,108 — Short-term debt 1,082,044 1,081,996 — 1,081,996 — Long-term FHLB advances 142,792 143,151 — 143,151 — Subordinated notes 89,161 96,973 — 96,973 — Derivative liabilities 24,420 24,420 — 24,420 — December 31, 2015 Carrying Fair (In thousands) Level 1 Level 2 Level 3 Financial Assets Cash and cash equivalents $ 103,562 $ 103,562 $ 103,562 $ — $ — Trading security 14,189 14,189 — — 14,189 Securities available for sale 1,154,457 1,154,457 32,925 1,120,824 708 Securities held to maturity 131,652 136,904 — 98,367 38,537 FHLB stock and restricted equity securities 71,018 71,018 — 71,018 — Net loans 5,685,928 5,727,570 — — 5,727,570 Loans held for sale 13,191 13,191 — 13,191 — Accrued interest receivable 20,940 20,940 — 20,940 — Cash surrender value of bank-owned life insurance policies 125,233 125,233 — 125,233 — Derivative assets 17,507 17,507 45 17,130 332 Assets held for sale 278 278 — 278 — Financial Liabilities Total deposits 5,589,135 5,582,835 — 5,582,835 — Short-term debt 1,071,200 1,071,044 — 1,071,044 — Long-term FHLB advances 103,135 103,397 — 103,397 — Subordinated notes 89,812 93,291 — 93,291 — Derivative liabilities 28,181 28,181 — 28,181 — Other than as discussed above, the following methods and assumptions were used by management to estimate the fair value of significant classes of financial instruments for which it is practicable to estimate that value. Cash and cash equivalents. Carrying value is assumed to represent fair value for cash and cash equivalents that have original maturities of ninety days or less. FHLB stock and restricted equity securities. Carrying value approximates fair value based on the redemption provisions of the issuers. Cash surrender value of life insurance policies. Carrying value approximates fair value. Loans, net. The carrying value of the loans in the loan portfolio is based on their outstanding unpaid principal balances adjusted for charge-offs, the allowance for loan losses, the unamortized balance of any deferred fees or costs on originated loans and the unamortized balance of any premiums or discounts on loans purchased or acquired through mergers. The fair value of the loans is estimated by discounting future cash flows using the current interest rates at which similar loans with similar terms would be made to borrowers of similar credit quality. Accrued interest receivable. Carrying value approximates fair value. Deposits. The fair value of demand, non-interest bearing checking, savings and money market deposits is determined as the amount payable on demand at the reporting date. The fair value of time deposits is estimated by discounting the estimated future cash flows using market rates offered for deposits of similar remaining maturities. Borrowed funds. The fair value of borrowed funds is estimated by discounting the future cash flows using market rates for similar borrowings. Such funds include all categories of debt and debentures in the table above. Subordinated borrowings. The Company utilizes a pricing service along with internal models to estimate the valuation of its junior subordinated debentures. The junior subordinated debentures re-price every ninety days. Off-balance-sheet financial instruments. Off-balance-sheet financial instruments include standby letters of credit and other financial guarantees and commitments considered immaterial to the Company’s financial statements.

CONDENSED FINANCIAL STATEMENTS

CONDENSED FINANCIAL STATEMENTS OF PARENT COMPANY	12 Months Ended
	Dec. 31, 2016
Condensed Financial Information of Parent Company Only Disclosure [Abstract]
CONDENSED FINANCIAL STATEMENTS OF PARENT COMPANY	CONDENSED FINANCIAL STATEMENTS OF PARENT COMPANY Condensed financial information pertaining only to the Parent, Berkshire Hills Bancorp, is as follows. Investment in subsidiaries at December 31, 2016 includes $35 million of intercompany subordinated notes. CONDENSED BALANCE SHEETS December 31, (In thousands) 2016 2015 Assets Cash due from Berkshire Bank $ 43,018 $ 36,082 Investment in subsidiaries 1,127,706 931,171 Securities available for sale, at fair value 23,651 726 Other assets 1,372 10,179 Total assets $ 1,195,747 $ 978,158 Liabilities and Shareholders’ Equity Short term debt $ 10,000 $ — Subordinated notes 89,161 88,983 Accrued expenses 3,288 1,986 Shareholders’ equity 1,093,298 887,189 Total liabilities and shareholders’ equity $ 1,195,747 $ 978,158 CONDENSED STATEMENTS OF INCOME Years Ended December 31, (In thousands) 2016 2015 2014 Income: Dividends from subsidiaries $ 33,000 $ 34,000 $ 12,000 Other 4,072 2,763 2,317 Total income 37,072 36,763 14,317 Interest expense 5,743 5,674 5,847 Non-interest expenses 3,740 3,670 2,286 Total expense 9,483 9,344 8,133 Income before income taxes and equity in undistributed income of subsidiaries 27,589 27,419 6,184 Income tax benefit (2,123 ) (2,518 ) (2,330 ) Income before equity in undistributed income of subsidiaries 29,712 29,937 8,514 Equity in undistributed income of subsidiaries 28,958 19,581 25,230 Net income $ 58,670 $ 49,518 $ 33,744 CONDENSED STATEMENTS OF CASH FLOWS Years Ended December 31, (In thousands) 2016 2015 2014 Cash flows from operating activities: Net income $ 58,670 $ 49,518 $ 33,744 Adjustments to reconcile net income to net cash (used) provided by operating activities: Equity in undistributed income of subsidiaries (28,958 ) (19,581 ) (25,230 ) Other, net 1,988 10,904 3,247 Net cash provided by operating activities 31,700 40,841 11,761 Cash flows from investing activities: Acquisitions, net of cash paid — (3,293 ) — Purchase of securities (18,016 ) (18 ) — Other, net 9,728 — — Net cash (used) provided by investing activities (8,288 ) (3,311 ) — Cash flows from financing activities: Proceed from issuance of short term debt 9,349 (9,935 ) — Net proceeds from common stock 3,712 — — Net proceeds from reissuance of treasury stock — 240 1,064 Payment to repurchase common stock (4,632 ) (550 ) (2,468 ) Common stock cash dividends paid (24,916 ) (21,903 ) (18,075 ) Other, net 11 167 (1,903 ) Net cash provided (used) by financing activities (16,476 ) (31,981 ) (21,382 ) Net change in cash and cash equivalents 6,936 5,549 (9,621 ) Cash and cash equivalents at beginning of year 36,082 30,533 40,154 Cash and cash equivalents at end of year $ 43,018 $ 36,082 $ 30,533

QUARTERLY DATA (UNAUDITED)

QUARTERLY DATA (UNAUDITED)	12 Months Ended
	Dec. 31, 2016
Quarterly Financial Information Disclosure [Abstract]
QUARTERLY DATA (UNAUDITED)	QUARTERLY DATA (UNAUDITED) Quarterly results of operations were as follows: 2016 2015 (In thousands, except per share data) Fourth Quarter Third Quarter Second Quarter First Quarter Fourth Quarter Third Quarter Second Quarter First Quarter Interest and dividend income $ 72,434 $ 70,511 $ 69,018 $ 68,476 $ 68,424 $ 65,452 $ 60,403 $ 52,751 Interest expense 13,276 12,540 11,577 10,779 9,676 8,481 7,766 7,258 Net interest income 59,158 57,971 57,441 57,697 58,748 56,971 52,637 45,493 Non-interest income 16,725 18,941 14,555 15,630 12,248 12,698 16,780 12,562 Total revenue 75,883 76,912 71,996 73,327 70,996 69,669 69,417 58,055 Provision for loan losses 4,100 4,734 4,522 4,006 4,431 4,240 4,204 3,851 Non-interest expense 61,090 48,844 46,268 47,100 48,279 49,378 54,025 45,148 Income before income taxes 10,693 23,334 21,206 22,221 18,286 16,051 11,188 9,056 Income tax expense 362 6,953 5,249 6,220 2,273 1,350 1,144 297 Net income $ 10,331 $ 16,381 $ 15,957 $ 16,001 $ 16,013 $ 14,701 $ 10,044 $ 8,759 Basic earnings per share $ 0.32 $ 0.53 $ 0.52 $ 0.52 $ 0.53 $ 0.49 $ 0.35 $ 0.35 Diluted earnings per share $ 0.32 $ 0.53 $ 0.52 $ 0.52 $ 0.52 $ 0.49 $ 0.35 $ 0.35 Weighted average shares outstanding: Basic 32,185 30,621 30,605 30,511 30,500 29,893 28,301 24,803 Diluted 32,381 30,811 30,765 30,688 30,694 30,069 28,461 24,955

NET INTEREST INCOME AFTER PROVI

NET INTEREST INCOME AFTER PROVISION FOR LOAN LOSSES	12 Months Ended
	Dec. 31, 2016
Banking and Thrift, Interest [Abstract]
NET INTEREST INCOME AFTER PROVISION FOR LOAN LOSSES	NET INTEREST INCOME AFTER PROVISION FOR LOAN LOSSES Presented below is net interest income after provision for loan losses for the three years ended 2016, 2015, and 2014, respectively: Years Ended December 31, (In thousands) 2016 2015 2014 Net interest income 232,267 213,849 178,691 Provision for loan losses 17,362 16,726 14,968 Net interest income after provision for loan losses 214,905 197,123 163,723 Total non-interest income 65,851 54,288 47,770 Total non-interest expense 203,302 196,829 165,986 Income from continuing operations before income taxes 77,454 54,582 45,507 Income tax expense 18,784 5,064 11,763 Net income $ 58,670 $ 49,518 $ 33,744

SUBSEQUENT EVENTS

SUBSEQUENT EVENTS	12 Months Ended
	Dec. 31, 2016
Subsequent Events [Abstract]
SUBSEQUENT EVENTS	SUBSEQUENT EVENTS On February 7, 2017 the Company terminated all of its interest rate swaps associated with FHLB advances with 1-month LIBOR based floating interest rates with an aggregate notional amount of $300 million with various institutions. As of the termination date, the Company will not renew any of its 1-month FHLB borrowings and will permit the remaining balance to run-off. As a result, the Company reclassified $6.6 million of losses from the effective portion of the unrealized changes in the fair value of the terminated derivatives from other comprehensive loss to earnings as the forecasted transactions related to the FHLB advances will not occur.

SUMMARY OF SIGNIFICANT ACCOUN33

SUMMARY OF SIGNIFICANT ACCOUNTING POLICES (Policies)	12 Months Ended
	Dec. 31, 2016
Accounting Policies [Abstract]
Basis of Presentation and Consolidation	Basis of Presentation and Consolidation The consolidated financial statements (the “financial statements”) of Berkshire Hills Bancorp, Inc. and its subsidiaries (the “Company” or “Berkshire”) have been prepared in conformity with accounting principles generally accepted in the United States of America (“GAAP”). The Company is a Delaware corporation and the holding company for Berkshire Bank (the “Bank”), a Massachusetts-chartered trust company headquartered in Pittsfield, Mass. These financial statements include the accounts of the Company, its wholly-owned subsidiaries and the Bank’s consolidated subsidiaries. In consolidation, all significant intercompany accounts and transactions are eliminated. The results of operations of companies or assets acquired are included only from the dates of acquisition. All material wholly-owned and majority-owned subsidiaries are consolidated unless GAAP requires otherwise.
Reclassifications	Reclassifications Certain items in prior financial statements have been reclassified to conform to the current presentation. The Company has evaluated subsequent events for potential recognition and/or disclosure through the date these consolidated financial statements were issued.
Use of Estimates	Use of Estimates The preparation of financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent liabilities at the date of the financial statements. Actual results could differ from those estimates. Material estimates that are particularly susceptible to significant change in the near term relate to the determination of the allowance for loan losses; the valuation of deferred tax assets; the estimates related to the initial measurement of goodwill and intangible assets and subsequent impairment analyses; the determination of other-than-temporary impairment of securities; and the determination of fair value of financial instruments and subsequent impairment analysis.
Business Combinations	Business Combinations Business combinations are accounted for using the acquisition method of accounting. Under this method, the accounts of an acquired entity are included with the acquirer’s accounts as of the date of acquisition with any excess of purchase price over the fair value of the net assets acquired (including identifiable intangibles) capitalized as goodwill. To consummate an acquisition, the Company will typically issue common stock and/or pay cash, depending on the terms of the acquisition agreement. The value of common shares issued is determined based upon the market price of the stock as of the closing of the acquisition.
Cash and Cash equivalents	Cash and Cash equivalents Cash and cash equivalents include cash, balances due from banks, and short-term investments, all of which had an original maturity within 90 days. Due to the nature of cash and cash equivalents and the near term maturity, the Company estimated that the carrying amount of such instruments approximated fair value. The nature of the Bank’s business requires that it maintain amounts due from banks which at times, may exceed federally insured limits. The Bank has not experienced any losses on such amounts and all amounts are maintained with well-capitalized institutions.
Trading Security	Trading Security The Company accounts for a tax advantaged economic development bond originated in 2008 at fair value, in accordance with Financial Accounting Standards Board’s (“FASB”) Accounting Standards Codification (“ASC”) 320. The bond has been designated as a trading account security and is recorded at fair value, with changes in unrealized gains and losses recorded through earnings each period as part of non-interest income.
Securities	Securities Debt securities that management has the intent and ability to hold to maturity are classified as held to maturity and carried at amortized cost. All other securities, including equity securities with readily determinable fair values, are classified as available for sale and carried at fair value, with unrealized gains and losses reported as a component of other net comprehensive income. Management determines the appropriate classification of securities at the time of purchase. Restricted equity securities, such as stock in the Federal Home Loan Bank of Boston (“FHLBB”) are carried at cost. There are no quoted market prices for the Company’s restricted equity securities. The Bank is a member of the FHLBB, which requires that members maintain an investment in FHLBB stock, which may be redeemed based on certain conditions. The Bank reviews for impairment based on the ultimate recoverability of the cost bases in the FHLBB stock. Purchase premiums and discounts are recognized in interest income using the interest method over the terms of the securities. Gains and losses on the sale of securities are recorded on the trade date and are determined using the specific identification method. The Company evaluates debt and equity securities within the Company’s available for sale and held to maturity portfolios for other-than-temporary impairment (“OTTI”), at least quarterly. If the fair value of a debt security is below the amortized cost basis of the security, OTTI is required to be recognized if any of the following are met: (1) the Company intends to sell the security; (2) it is “more likely than not” that the Company will be required to sell the security before recovery of its amortized cost basis; or (3) the present value of expected cash flows is not sufficient to recover the entire amortized cost basis. For all impaired debt securities that the Company intends to sell, or more likely than not will be required to sell, the full amount of the depreciation is recognized as OTTI through earnings. Credit-related OTTI for all other impaired debt securities is recognized through earnings. Non-credit related OTTI for such debt securities is recognized in other comprehensive income, net of applicable taxes. In evaluating its marketable equity securities portfolios for OTTI, the Company considers its intent and ability to hold an equity security to recovery of its cost basis in addition to various other factors, including the length of time and the extent to which the fair value has been less than cost and the financial condition and near term prospects of the issuer. Any OTTI on marketable equity securities is recognized immediately through earnings.
Loans Held for Sale	Loans Held for Sale Loans originated with the intent to be sold in the secondary market are accounted for under the fair value option. Non-refundable fees and direct loan origination costs related to residential mortgage loans held for sale are recognized in non-interest income or non-interest expense as earned or incurred. Fair value is primarily determined based on quoted prices for similar loans in active markets. Gains and losses on sales of residential mortgage loans (sales proceeds minus carrying value) are recorded in non-interest income. Loans that were previously held for investment that the Company has an active plan to sell are transferred to loans held for sale at the lower of cost or market (fair value). The market price is primarily determined based on quoted prices for similar loans in active markets or agreed upon sales prices. Gains are recorded in non-interest income at sale to the extent that the sale price of the loan exceeds carrying value. Any reduction in the loan’s value, prior to being transferred to loans held for sale, is reflected as a charge-off of the recorded investment in the loan resulting in a new cost basis, with a corresponding reduction in the allowance for loan losses. Further changes in the fair value of the loan are recognized in non-interest income or expense, accordingly.
Loans	Loans Loans are reported at their outstanding unpaid principal balances adjusted for charge-offs, the allowance for loan losses, the unamortized balance of any deferred fees or costs on originated loans and the unamortized balance of any premiums or discounts on loans purchased or acquired through mergers. Interest income is accrued on the unpaid principal balance. Interest income includes net accretion or amortization of deferred fees or costs and of premiums or discounts. Direct loan origination costs, net of any origination fees, in addition to premiums and discounts on loans, are deferred and recognized as an adjustment of the related loan yield using the interest method. Interest on loans, excluding automobile loans, is generally not accrued on loans which are ninety days or more past due unless the loan is well-secured and in the process of collection. Past due status is based on contractual terms of the loan. Automobile loans generally continue accruing until one hundred and twenty days delinquent, at which time they are charged off. All interest accrued but not collected for loans that are placed on non-accrual or charged-off is reversed against interest income, except for certain loans designated as well-secured. The interest on non-accrual loans is accounted for on the cash-basis or cost-recovery method, until qualifying for return to accrual. All payments received on non-accrual loans are applied against the principal balance of the loan. Loans are returned to accrual status when all the principal and interest amounts contractually due are brought current and future payments are reasonably assured.
Acquired Loans	Acquired Loans Loans that the Company acquired in acquisitions are initially recorded at fair value with no carryover of the related allowance for credit losses. Determining the fair value of the loans involves estimating the amount and timing of principal and interest cash flows initially expected to be collected on the loans and discounting those cash flows at an appropriate market rate of interest. For loans that meet the criteria stipulated in ASC 310-30, “ Loans and Debt Securities Acquired with Deteriorated Credit Quality, ” the Company recognizes the accretable yield, which is defined as the excess of all cash flows expected at acquisition over the initial fair value of the loan, as interest income on a level-yield basis over the expected remaining life of the loan. The excess of the loan’s contractually required payments over the cash flows expected to be collected is the nonaccretable difference. The nonaccretable difference is not recognized as an adjustment of yield, a loss accrual, or a valuation allowance. Going forward, the Company continues to evaluate whether the timing and the amount of cash to be collected are reasonably expected. Subsequent significant increases in cash flows the Company expects to collect will first reduce any previously recognized valuation allowance and then be reflected prospectively as an increase to the level yield. Subsequent decreases in expected cash flows may result in the loan being considered impaired. Interest income is not recognized to the extent that the net investment in the loan would increase to an amount greater than the estimated payoff amount. For ASC 310-30 loans, the expected cash flows reflect anticipated prepayments, determined on a loan by loan basis according to the anticipated collection plan of these loans. The expected prepayments used to determine the accretable yield are consistent between the cash flows expected to be collected and projections of contractual cash flows so as to not affect the nonaccretable difference. For ASC 310-30 loans, prepayments result in the recognition of the nonaccretable balance as current period yield. Changes in prepayment assumptions may change the amount of interest income and principal expected to be collected. Interest income is also net of recoveries recorded on acquired impaired loans. For loans that do not meet the ASC 310-30 criteria, the Company accretes interest income based on the contractually required cash flows. The Company subjects loans that do not meet the ASC 310-30 criteria to ASC 450, “Contingencies” by collectively evaluating these loans for an allowance for loan loss. Acquired loans that met the criteria for nonaccrual of interest prior to the acquisition are considered performing upon acquisition, regardless of whether the customer is contractually delinquent, if the Company can reasonably estimate the timing and amount of the expected cash flows on such loans and if the Company expects to fully collect the new carrying value of the loans. As such, the Company may no longer consider the loan to be nonaccrual or nonperforming and may accrue interest on these loans, including the impact of any accretable yield. The Company has determined that the Company can reasonably estimate future cash flows on the Company’s current portfolio of acquired loans that are past due 90 days or more and on which the Company is accruing interest and the Company expects to fully collect the carrying value of the loans.
Allowance for Loan Losses	Allowance for Loan Losses The allowance for loan losses is established based upon the level of estimated probable losses in the current loan portfolio. Loan losses are charged against the allowance when management believes the collectability of a loan balance is doubtful. Subsequent recoveries, if any, are credited to the allowance. The allowance for loan losses includes allowance allocations calculated in accordance with ASC 310, “Receivables,” and allowance allocations calculated in accordance with ASC 450, “Contingencies.” The allowance for loan losses is allocated to loan types using both a formula-based approach applied to groups of loans and an analysis of certain individual loans for impairment. The formula-based approach emphasizes loss factors derived from actual historical and industry portfolio loss rates, which are combined with an assessment of certain qualitative factors to determine the allowance amounts allocated to the various loan categories. Allowance amounts are based on an estimate of historical average annual percentage rate of loan loss for each loan segment, a temporal estimate of the incurred loss emergence and confirmation period for each loan category, and certain qualitative risk factors considered in the computation of the allowance for loan losses. Qualitative risk factors impacting the inherent risk of loss within the portfolio include the following: • National and local economic conditions, regulatory/legislative changes, or other competitive factors affecting the collectability of the portfolio • Trends in underwriting characteristics, composition of the portfolio, and/or asset quality • Changes in underwriting standards and/or collection, charge off, recovery, and account management practice • The existence and effect of any concentrations of credit Risk characteristics relevant to each portfolio segment are as follows: Commercial real estate — Loans in this segment are primarily owner-occupied or income-producing properties throughout New England and Northeastern New York. The underlying cash flows generated by the properties are adversely impacted by a downturn in the economy, which in turn, will have an effect on the credit quality in this segment. Management monitors the cash flows of these loans. In addition, construction loans in this segment primarily include real estate development loans for which payment is derived from sale of the property or long term financing at completion. Credit risk is affected by cost overruns, time to sell at an adequate price, and market conditions. Commercial and industrial loans — Loans in this segment are made to businesses and are generally secured by assets of the business. Repayment is expected from the cash flows of the business. Loans in this segment include asset based loans which generally have no scheduled repayment and which are closely monitored against formula based collateral advance ratios. A weakened economy, and resultant decreased consumer spending, will have an effect on the credit quality in this segment. Residential mortgage — The Company generally does not originate loans with a loan-to-value ratio greater than 80 percent and does not grant subprime loans. The Company requires private mortgage insurance (PMI) in cases when the loan-to-value ratio exceeds 80 percent . All loans in this segment are collateralized by residential real estate and repayment is dependent on the credit quality of the individual borrower. The overall health of the economy, including unemployment rates and housing prices, will have an effect on the credit quality in this segment. Consumer loans — Loans in this segment are primarily home equity lines of credit and second mortgages, together with automobile loans and other consumer loans. The overall health of the economy, including unemployment rates and housing prices, will have an effect on the credit quality in this segment. The Company utilizes a blend of historical and industry portfolio loss rates for commercial real estate and commercial and industrial loans that are assessed by internal risk rating. Historical loss rates for residential mortgages, home equity and other consumer loans are not risk graded but are assessed based on the total of each loan segment. This approach incorporates qualitative adjustments based upon management’s assessment of various market and portfolio specific risk factors into its formula-based estimate. Due to the imprecise nature of the loan loss estimation process and ever changing conditions, the qualitative risk attributes may not adequately capture amounts of incurred loss in the formula-based loan loss components used to determine allocations in the Company’s analysis of the adequacy of the allowance for loan losses. The Company evaluates certain loans individually for specific impairment. Large groups of small balance homogeneous loans such as the residential mortgage, home equity, and other consumer portfolios are collectively evaluated for impairment. A loan is considered impaired when, based on current information and events, it is probable that the Company will be unable to collect the scheduled payments of principal or interest when due according to the contractual terms of the loan agreement. Factors considered by management in determining impairment include payment status, collateral value, and the probability of collecting scheduled principal and interest payments when due. Loans that experience insignificant payment delays and payment shortfalls generally are not classified as impaired. Loans are selected for evaluation based upon a change in internal risk rating, occurrence of delinquency, loan classification, or non-accrual status. The evaluation of certain loans individually for specific impairment includes loans that were previously classified as Troubled Debt Restructurings (“TDRs”) or continue to be classified as TDRs. A specific allowance amount is allocated to an individual loan when such loan has been deemed impaired and when the amount of the probable loss is able to be estimated. Estimates of loss may be determined by the present value of anticipated future cash flows or the loan’s observable fair market value, or the fair value of the collateral, if the loan is collateral dependent. However, for collateral dependent loans, the amount of the recorded investment in a loan that exceeds the fair value of the collateral is charged-off against the allowance for loan losses in lieu of an allocation of a specific allowance amount when such an amount has been identified definitively as uncollectible.
Bank-Owned Life Insurance	Bank-Owned Life Insurance Bank-owned life insurance policies are reflected on the consolidated balance sheets at cash surrender value. Changes in the net cash surrender value of the policies, as well as insurance proceeds received, are reflected in non-interest income on the consolidated statements of operations and are not subject to income taxes.
Foreclosed and Repossessed Assets	Foreclosed and Repossessed Assets Assets acquired through, or in lieu of, loan foreclosure or repossession are held for sale and are initially recorded at the lower of the investment in the loan or fair value less estimated costs to sell at the date of foreclosure or repossession, establishing a new cost basis. Subsequently, valuations are periodically performed by management and the assets are carried at the lower of carrying amount or fair value less estimated costs to sell. Revenue and expenses from operations, changes in the valuation allowance, any direct write-downs and gains or losses on sales are included in other real estate owned expense.
Capitalized Servicing Rights	Capitalized Servicing Rights Capitalized servicing rights are included in “other assets” in the consolidated balance sheet. Servicing assets are initially recognized as separate assets at fair value when rights are acquired through purchase or through sale of financial assets with servicing retained. The Company's servicing rights accounted for under the fair value method are carried on the consolidated balance sheet at fair value with changes in fair value recorded in income in the period in which the change occurs. Changes in the fair value of servicing rights are primarily due to changes in valuation inputs, assumptions, and the collection and realization of expected cash flows. The Company’s servicing rights accounted for under the amortization method are initially recorded at fair value. Under that method, capitalized servicing rights are charged to expense in proportion to and over the period of estimated net servicing income. Fair value of the servicing rights is based on a valuation model that calculates the present value of estimated future net servicing income. The valuation model incorporates assumptions that market participants would use in estimating future net servicing income, such as the cost to service, the discount rate, prepayment speeds and default rates and losses. Impairment is recognized through a valuation allowance for an individual tranche, to the extent that fair value is less than the capitalized amount for the tranches. If the Company later determines that all or a portion of the impairment no longer exists for a particular tranche, a reduction of the allowance may be recorded as an increase to income
Premises and Equipment	Premises and Equipment Land is carried at cost. Buildings, improvements, and equipment are carried at cost, less accumulated depreciation and amortization computed on the straight-line method over the estimated useful lives of the assets. Leasehold improvements are amortized over the initial term of the lease, plus optional terms if certain conditions are met.
Goodwill	Goodwill Goodwill represents the excess of the purchase price over the fair value of the net assets acquired in a business combination. Goodwill is assessed annually for impairment, and more frequently if events or changes in circumstances indicate that there may be an impairment. Adverse changes in the economic environment, declining operations, unanticipated competition, loss of key personnel, or other factors could result in a decline in the implied fair value of goodwill. If the implied fair value of goodwill is less than the carrying amount, a loss would be recognized in other non-interest expense to reduce the carrying amount to the implied fair value of goodwill. The Company performs an annual qualitative assessment of whether it is more likely than not that the reporting unit's fair value is less than its carrying amount. If the results of the qualitative assessment suggest goodwill impairment, the Company would perform a two-step impairment test through the application of various quantitative valuation methodologies. Step 1, used to identify instances of potential impairment, compares the fair value of the reporting unit with its carrying amount, including goodwill. If the carrying amount, including goodwill, exceeds its fair value, the second step of the goodwill impairment analysis is performed to measure the amount of impairment loss, if any. Step 2 of the goodwill impairment analysis compares the implied fair value of reporting unit goodwill with the carrying amount of that goodwill. If the carrying amount of goodwill for the reporting unit exceeds the implied fair value of the reporting unit’s goodwill, an impairment loss is recognized in an amount equal to that excess. Subsequent reversals of goodwill impairment are prohibited. The Company may elect to bypass the qualitative assessment and begin with Step 1.
Other Intangibles	Other Intangibles Intangible assets are acquired assets that lack physical substance but can be distinguished from goodwill because of contractual or other legal rights or the asset is capable of being sold or exchanged either on its own or in combination with a related contract, asset or liability. The fair values of these assets are generally determined based on appraisals and are subsequently amortized on a straight-line basis or an accelerated basis over their estimated lives. Management assesses the recoverability of these intangible assets whenever events or changes in circumstances indicate that their carrying value may not be recoverable. If the carrying amount exceeds fair value, an impairment charge is recorded to income.
Transfers of Financial Assets	Transfers of Financial Assets Transfers of an entire financial asset, group of entire financial assets, or a participating interest in an entire financial asset are accounted for as sales when control over the assets has been surrendered. Control over transferred assets is deemed to be surrendered when (1) the assets have been isolated from the Company, (2) the transferee obtains the right to pledge or exchange the transferred assets, and (3) the Company does not maintain effective control over the transferred assets.
Income Taxes	Income Taxes Deferred income taxes are recognized for the tax consequences of temporary differences by applying enacted statutory tax rates applicable for future years to differences between financial statement and tax bases of existing assets and liabilities. The effect of tax rate changes on deferred taxes is recognized in the income tax provision in the period that includes the enactment date. A tax valuation allowance is established, as needed, to reduce net deferred tax assets to the amount expected to be realized. In the event it becomes more likely than not that some or all of the deferred tax asset allowances will not be needed, the valuation allowance will be adjusted. In the ordinary course of business there is inherent uncertainty in quantifying the Company’s income tax positions. Income tax positions and recorded tax benefits are based upon management’s evaluation of the facts, circumstances, and information available at the reporting date. For those tax positions where it is more likely than not that a tax benefit will be sustained, we have determined the amount of the tax benefit to be recognized by estimating the largest amount of tax benefit that has a greater than 50% likelihood of being realized upon ultimate settlement with a taxing authority that has full knowledge of all relevant information. For those income tax positions where it is not more-likely-than-not that a tax benefit will be sustained, no tax benefit has been recognized in the financial statements. Where applicable, associated interest and penalties has also been recognized. We recognize accrued interest and penalties related to unrecognized tax benefits as a component of income tax expense.
Insurance Commissions	Insurance Commissions Commission revenue is recognized as of the effective date of the insurance policy or the date the customer is billed, whichever is later, net of return commissions related to policy cancellations. In addition, the Company may receive additional performance commissions based on achieving certain sales and loss experience measures. Such commissions are recognized when determinable, which is generally when such commissions are received or when the Company receives data from the insurance companies that allows the reasonable estimation of these amounts.
Advertising Costs	Advertising Costs Advertising costs are expensed as incurred.
Stock-Based Compensation	Stock-Based Compensation The Company measures and recognizes compensation cost relating to share-based payment transactions based on the grant-date fair value of the equity instruments issued. The fair value of restricted stock is recorded as unearned compensation. The deferred expense is amortized to compensation expense based on one of several permitted attribution methods over the longer of the required service period or performance period. For performance-based restricted stock awards, the Company estimates the degree to which performance conditions will be met to determine the number of shares that will vest and the related compensation expense. Compensation expense is adjusted in the period such estimates change. Income tax benefits and/or tax deficiencies related to stock compensation determined as the difference between compensation cost recognized for financial reporting purposes and the deduction for tax, are recognized in the income statement as income tax expense or benefit in the period in which they occur.
Earnings per Common Share	Earnings per Common Share Basic earnings per share represents income available to common stockholders divided by the weighted-average number of common shares outstanding during the period. If rights to dividends on unvested options/awards are non-forfeitable, these unvested awards/options are considered outstanding in the computation of basic earnings per share. Diluted earnings per share reflects additional common shares that would have been outstanding if dilutive potential common shares had been issued, as well as any adjustments to income that would result from the assumed issuance. Potential common shares that may be issued by the Company relate to outstanding stock options and restricted stock awards and are determined using the treasury stock method. Treasury shares are not deemed outstanding for earnings per share calculations.
Wealth Management	Wealth Management Wealth management assets held in a fiduciary or agent capacity are not included in the accompanying consolidated balance sheets because they are not assets of the Company. Fees earned from wealth management activities are amortized over the period of the service performed.
Derivative Instruments and Hedging Activities	Derivative Instruments and Hedging Activities The Company enters into interest rate swap agreements as part of the Company’s interest rate risk management strategy for certain assets and liabilities and not for speculative purposes. Based on the Company’s intended use for the interest rate swap at inception, the Company designates the derivative as either an economic hedge of an asset or liability or a hedging instrument subject to the hedge accounting provisions of ASC 815, “Derivatives and Hedging.” Interest rate swaps designated as economic hedges are recorded at fair value within other assets or liabilities. Changes in the fair value of these derivatives are recorded directly through earnings. For interest rate swaps that management intends to apply the hedge accounting provisions of ASC 815, the Company formally documents at inception all relationships between hedging instruments and hedged items, as well as its risk management objectives and strategies for undertaking the various hedges. Additionally, the Company uses dollar offset or regression analysis at the hedge’s inception and for each reporting period thereafter, to assess whether the derivative used in its hedging transaction is expected to be and has been highly effective in offsetting changes in the fair value or cash flows of the hedged item. The Company discontinues hedge accounting when it is determined that a derivative is not expected to be or has ceased to be highly effective as a hedge, and then reflects changes in fair value of the derivative in earnings after termination of the hedge relationship. The Company has characterized its interest rate swaps that qualify under ASC 815 hedge accounting as cash flow hedges. Cash flow hedges are used to minimize the variability in cash flows of assets or liabilities, or forecasted transactions caused by interest rate fluctuations, and are recorded at fair value in other assets or liabilities within the Company’s balance sheets. Changes in the fair value of these cash flow hedges are initially recorded in accumulated other comprehensive income and subsequently reclassified into earnings when the forecasted transaction affects earnings. Any hedge ineffectiveness assessed as part of the Company’s quarterly analysis is recorded directly to earnings. The Company enters into interest rate lock commitments with borrowers, and forward commitments to sell loans or to-be-announced mortgage-backed bonds to investors to hedge against the inherent interest rate and pricing risk associated with selling loans. The interest rate lock commitments generally terminate once the loan is funded, the lock period expires or the borrower decides not to contract for the loan. The forward commitments generally terminate once the loan is sold, the commitment period expires or the borrower decides not to contract for the loan. These commitments are considered derivatives which are accounted for by recognizing their estimated fair value on the Consolidated Balance Sheets as either a freestanding asset or liability. See Note 16 to the Consolidated Financial Statements for more information on interest rate lock commitments and forward commitments.
Off-Balance Sheet Financial Instruments	Off-Balance Sheet Financial Instruments In the ordinary course of business, the Company enters into off-balance sheet financial instruments, consisting primarily of credit related financial instruments. These financial instruments are recorded in the financial statements when they are funded or related fees are incurred or received.
Fair Value Hierarchy	Fair Value Hierarchy The Company groups assets and liabilities that are measured at fair value in three levels, based on the markets in which the assets and liabilities are traded and the reliability of the assumptions used to determine fair value. Level 1 — Valuation is based on quoted prices in active markets for identical assets or liabilities. Valuations are obtained from readily available pricing sources for market transactions involving identical assets or liabilities. Level 2 — Valuation is based on observable inputs other than Level 1 prices, such as quoted prices for similar assets or liabilities; quoted prices in markets that are not active; or other inputs that are observable or can be corroborated by observable market data for substantially the full term of the assets or liabilities. Level 3 — Valuation is based on unobservable inputs that are supported by little or no market activity and that are significant to the fair value of the assets or liabilities. Level 3 assets and liabilities include financial instruments whose value is determined using unobservable techniques, as well as instruments for which the determination of fair value requires significant management judgment or estimation.
Employee Benefits	Employee Benefits The Company maintains an employer sponsored 401(k) plan to which participants may make contributions in the form of salary deferrals and the Company provides matching contributions in accordance with the terms of the plan. Contributions due under the terms of the defined contribution plans are accrued as earned by employees. Due to the Rome Bancorp acquisition in 2011, the Company inherited a noncontributory, qualified, defined benefit pension plan for certain employees who met age and service requirements; as well as other post-retirement benefits, principally health care and group life insurance. The Rome pension plan and postretirement benefits that were acquired in connection with the whole-bank acquisition in the second quarter of 2011 were frozen prior to the close of the transaction. The pension benefit in the form of a life annuity is based on the employee’s combined years of service, age, and compensation. The Company also has a long-term care post-retirement benefit plan for certain executives where upon disability, associated benefits are funded by insurance policies or paid directly by the Company. In order to measure the expense associated with the Plans, various assumptions are made including the discount rate, expected return on plan assets, anticipated mortality rates, and expected future healthcare costs. The assumptions are based on historical experience as well as current facts and circumstances. The Company uses a December 31 measurement date for its Plans. As of the measurement date, plan assets are determined based on fair value, generally representing observable market prices. The projected benefit obligation is primarily determined based on the present value of projected benefit distributions at an assumed discount rate. Net periodic pension benefit costs include interest costs based on an assumed discount rate, the expected return on plan assets based on actuarially derived market-related values, and the amortization of net actuarial losses. Net periodic postretirement benefit costs include service costs, interest costs based on an assumed discount rate, and the amortization of prior service credits and net actuarial gains. Differences between expected and actual results in each year are included in the net actuarial gain or loss amount, which is recognized in other comprehensive income. The net actuarial gain or loss in excess of a 10% corridor is amortized in net periodic benefit cost over the average remaining service period of active participants in the Plans. The prior service credit is amortized over the average remaining service period to full eligibility for participating employees expected to receive benefits. The Company recognizes in its statement of condition an asset for a plan’s overfunded status or a liability for a plan’s underfunded status. The Company also measures the Plans’ assets and obligations that determine its funded status as of the end of the fiscal year and recognizes those changes in other comprehensive income, net of tax.
Operating Segments	Operating Segments The Company operates as one consolidated reportable segment. The chief operating decision-maker evaluates consolidated results and makes decisions for resource allocation on this same data. Management periodically reviews and redefines its segment reporting as internal reporting practices evolve and components of the business change. The consolidated financial statements reflect the financial results of the Company's one reportable operating segment.
Recent Accounting Pronouncements and Future Application of Accounting Pronouncements	Recently Adopted Accounting Principles Effective January 1, 2016, the following new accounting guidance was adopted by the Company: • ASU No. 2015-02, Consolidation (Topic 810) - Amendments to the Consolidation Analysis; • ASU No. 2015-03, Interest-Imputation of Interest (Subtopic 835-30) - Simplifying the Presentation of Debt Issuance Costs; • ASU No. 2015-05, Intangibles-Goodwill and Other-Internal-Use Software (Subtopic 350-40): Customer’s Accounting for Fees Paid in a Cloud Computing Arrangement; and • ASU No. 2015-16, Business Combinations (Topic 805) - Simplifying the Accounting for Measurement - Period Adjustments. The adoption of these accounting standards did not have a material impact on the Company's financial statements. In March 2016, the FASB issued ASU No. 2016-09, “Improvement to Employee Share-Based Payment Accounting”. This ASU contains targeted amendments to the accounting for shared based payment transactions, including income tax consequences for awards, classification of awards as either equity or liabilities, and classification of activity on the statement of cash flows. Specifically, some of the requirements under the amendments include: (1) excess tax benefits and/or tax deficiencies, determined as the difference between compensation cost recognized for financial reporting purposes and the deduction for tax, be recognized in the income statement as income tax expense or benefit in the period in which they occur, removing historical equity treatment; (2) excess tax benefits are no longer separately classified as a financing activity but rather should be classified with other income tax cash flows as an operating activity on the statement of cash flows; (3) cash paid by an employer when withholding shares for tax withholding purposes should be classified as a financing activity. Additionally, regarding forfeitures, this guidance permits a company to make an entity-wide accounting policy election to either estimate the number of awards that are expected to vest (current GAAP) or account for forfeitures when they occur. ASU No. 2016-09 is effective for annual periods beginning after December 15, 2016. The Company adopted ASU No. 2016-09 in April 2016 and the adoption of this accounting standard did not have a material impact on the Company's consolidated financial statements. The Company chose a modified retrospective approach and a policy election to account for forfeitures when they occur. This change resulted in a cumulative adjustment immaterial to all periods presented. Future Application of Accounting Pronouncements In May 2014, the FASB issued ASU No. 2014-09, “Revenue from Contracts with Customers.” This ASU provides a revenue recognition framework for any entity that either enters into contracts with customers to transfer goods or services or enters into contracts for the transfer of non-financial assets unless those contracts are within the scope of other accounting standards. ASU 2014-09 is effective for annual periods beginning after December 15, 2016, including interim periods within that reporting period with early adoption not permitted. The standard permits the use of either the retrospective or cumulative effect transition method. In August 2015, ASU No. 2015-14, “Deferral of the Effective Date” was issued and delayed the effective date of ASU 2014-09 to annual and interim periods in fiscal years beginning after December 15, 2017. In 2016, ASU No. 2016-08, “Principal versus Agent Considerations,” ASU No. 2016-10, “Identifying Performance Obligations and Licensing,” ASU No. 2016-12, “Narrow-Scope Improvements and Practical Expedients” and ASU No. 2016-20, “Technical Corrections and Improvements to Topic 606, Revenue from Contracts with Customers” were issued. These ASUs do not change the core principle for revenue recognition in Topic 606; instead, the amendments provide more detailed guidance in a few areas and additional implementation guidance and examples, which are expected to reduce the degree of judgment necessary to comply with Topic 606. The effective date and transition requirements for ASU 2016-08, ASU 2016-10 and ASU 2016-12 are the same as those provided by ASU 2015-14. The Company is currently evaluating the provisions of ASU No. 2014-09, and will be closely monitoring developments and additional guidance; however, this is not expected to be material to the Company's consolidated financial statements. In January 2016, the FASB issued ASU No. 2016-01, “Recognition and Measurement of Financial Assets and Financial Liabilities.” This ASU requires an entity to: i) measure equity investments at fair value through net income, with certain exceptions; (ii) present in other comprehensive income the changes in instrument-specific credit risk for financial liabilities measured using the fair value option; (iii) present financial assets and financial liabilities by measurement category and form of financial asset; (iv) calculate the fair value of financial instruments for disclosure purposes based on an exit price and; (v) assess a valuation allowance on deferred tax assets related to unrealized losses of AFS debt securities in combination with other deferred tax assets. The guidance provides an election to subsequently measure certain nonmarketable equity investments at cost less any impairment and adjusted for certain observable price changes. The guidance also requires a qualitative impairment assessment of such equity investments and amends certain fair value disclosure requirements. The guidance is effective for annual periods beginning after December 15, 2017. Early adoption is only permitted for the provision related to instrument specific credit risk. The Company is currently evaluating the impact of the new standard on the Company's consolidated financial statements; however, this is not expected to be material to the Company's consolidated financial statements. In February 2016, the FASB issued ASU No. 2016-02, “Leases”. The new pronouncement improves the transparency and comparability of financial reporting around leasing transactions and more closely aligns accounting for leases with the recently issued International Financial Reporting Standard. The pronouncement affects all entities that are participants to leasing agreements. From a lessee accounting perspective, the ASU requires a lessee to recognize assets and liabilities on the balance sheet for operating leases and changes many key definitions, including the definition of a lease. The ASU includes a short-term lease exception for leases with a term of twelve months or less, in which a lessee can make an accounting policy election not to recognize lease assets and lease liabilities. Lessees will continue to differentiate between finance leases (previously referred to as capital leases) and operating leases, using classification criteria that are substantially similar to the previous guidance. For lessees, the recognition, measurement, and presentation of expenses and cash flows arising from a lease have not significantly changed from previous GAAP. From a lessor accounting perspective, the guidance is largely unchanged, except for targeted improvements to align with new terminology under lessee accounting and with the updated revenue recognition guidance in Topic 606. For sale-leaseback transactions, for a sale to occur the transfer must meet the sale criteria under the new revenue standard, ASC 606. Entities will not be required to reassess transactions previously accounted under then existing guidance. Additionally, the ASU includes additional quantitative and qualitative disclosures required by lessees and lessors to help users better understand the amount, timing, and uncertainty of cash flows arising from leases. ASU No. 2016-02 is effective for fiscal years beginning after December 31, 2018, and interim periods within those fiscal years. Lessees and lessors are required to recognize and measure leases at the beginning of the earliest period presented using a modified retrospective approach. The modified retrospective approach includes a number of optional practical expedients that entities may elect to apply as well as transition guidance specific to nonstandard leasing transactions. The Company is currently evaluating the provisions of ASU No. 2016-02 to determine the potential impact the new standard will have on the Company's consolidated financial statements. It is expected that assets and liabilities will increase based on the present value of remaining lease payments for leases in place at the adoption date; however, this is not expected to be material to the Company's results of operations or financial position. In March 2016, the FASB issued ASU No. 2016-05, “Effect of Derivative Contract Novations on Existing Hedge Accounting Relationships.” This ASU clarifies that changes in the counterparty to a derivative instrument designated as a hedge does not alone require it to be de-designated and therefore discontinue the application of hedge accounting. Companies are still required to evaluate whether it is probable that a counterparty will perform under the contract as part of the ongoing effectiveness assessment for hedge accounting. The new guidance is effective for annual periods beginning after December 15, 2016 and entities may adopt on a prospective or modified retrospective basis. The Company adopted ASU No. 2016-05 as of January 1, 2017. The prior reporting period was not retrospectively adjusted. The adoption of this pronouncement did not have a material impact on the Company's consolidated financial statements. In March 2016, the FASB issued ASU No. 2016-06, “Contingent Put and Call Options in Debt Instruments” clarifying the assessment of whether contingent call or put options that can accelerate the payment of principal on debt instruments are clearly and closely related to the economic characteristics and risks of their debt hosts, a criteria in assessing whether to bifurcate an embedded derivative. The new pronouncement clarifies the exercise contingency and the event triggering the contingency does not need to be evaluated in the clearly and closely analysis relative to interest rates or credit risks. Rather, the call or put would be evaluated as a derivative regardless of the exercise contingency. Further, if an entity is no longer required to bifurcate a put or call option per the new guidance, the entity has a one-time option to irrevocably elect to measure that debt instrument in its entirety at fair value with changes in fair value recognized in earnings. ASU No. 2016-06 is effective for annual periods beginning after December 15, 2016 and early adoption is permitted. The ASU should be applied using the modified retrospective basis to existing instruments as of the beginning of the annual period of adoption. The Company adopted ASU No. 2016-06 as of January 1, 2017. The prior reporting period was not retrospectively adjusted. The adoption of this pronouncement did not have a material impact on the Company's consolidated financial statements. In March 2016, the FASB issued ASU No. 2016-07 “Simplifying the Transition to the Equity Method of Accounting” which eliminates the requirement to retroactively adjust an investment that becomes subject to the equity method of accounting as a result of an increase ownership interest or degree of influence. Alternatively, an investor entity adds the cost of acquiring the additional interest in the investee to the current basis of the investor’s previously held interest and adopts the equity method of accounting prospectively as of the qualifying date; no retroactive adjustment is required. Additionally, ASU No. 2016-07 specifies that when an available-for-sale equity security becomes qualified for the equity method of accounting, a company should recognize the unrealized holding gain or loss in accumulated other comprehensive income through earnings at the date the investment becomes qualified for use of the equity method. This guidance is effective for all entities for annual periods beginning after December 15, 2016, with early adoption permitted on a prospective basis. The Company adopted ASU No. 2016-07 as of January 1, 2017. The prior reporting period was not retrospectively adjusted. The adoption of this pronouncement did not have a material impact on the Company's consolidated financial statements. In June 2016, the FASB issued ASU No. 2016-13, “Measurement of Credit Losses on Financial Instruments.” This ASU improves financial reporting by requiring timelier recording of credit losses on loans and other financial instruments. The ASU requires companies to measure all expected credit losses for financial assets held at the reporting date based on historical experience, current conditions, and reasonable and supportable forecasts. Forward-looking information will now be used in credit loss estimates. The ASU requires enhanced disclosures to provide better understanding surrounding significant estimates and judgments used in estimating credit losses, as well as the credit quality and underwriting standards of a company’s portfolio. These disclosures include qualitative and quantitative requirements that provide additional information about the amounts recorded in the financial statements. Additionally, the ASU amends the accounting for credit losses on available-for-sale debt securities and purchased financial assets with credit deterioration. Most debt instruments will require a cumulative-effect adjustment to retained earnings on the statement of financial position as of the beginning of the first reporting period in which the guidance is adopted (modified retrospective approach). However, there is instrument-specific transition guidance. ASU No. 2016-13 is effective for interim and annual periods beginning after December 15, 2019. Early application will be permitted for interim and annual periods beginning after December 15, 2018. The Company is evaluating the provisions of ASU No. 2016-13, and will closely monitor developments and additional guidance to determine the potential impact on the Company's consolidated financial statements. The Company expects the primary changes to be the application of the expected credit loss model to the financial statements. In addition, the Company expects the guidance to change the presentation of credit losses within the available-for-sale fixed maturities portfolio through an allowance method rather than as a direct write-down. The expected credit loss model will require a financial asset to be presented at the net amount expected to be collected. The allowance method for available-for-sale debt securities will allow the Company to record reversals of credit losses if the estimate of credit losses declines. The Company is currently evaluating the impact of this pronouncement to the consolidated financial statements. In August 2016, the FASB issued ASU No. 2016-15, “Classification of Certain Cash Receipts and Cash Payments.” Current GAAP is unclear or does not include specific guidance on how to classify certain transactions in the statement of cash flows. The new guidance addresses eight specific cash flow issues with the objective of reducing the existing diversity in practice. ASU No. 2016-15 is effective for interim and annual periods beginning after December 15, 2017. Early application will be permitted provided that all of the amendments are adopted in the same period. Entities will be required to apply the guidance retrospectively. If it is impracticable to apply the guidance retrospectively for an issue, the amendment related to that issue would be applied prospectively. As this guidance only affects the classification within the statement of cash flows, ASU No. 2016-15 is not expected to have a material impact on the Company’s consolidated financial statements.

ACQUISITIONS (Tables)

ACQUISITIONS (Tables)	12 Months Ended
	Dec. 31, 2016
Business Combinations [Abstract]
Summary of Consideration Assets Acquired and Liabilities Assumed	The following table provides a summary of the assets acquired and liabilities assumed and the associated fair value adjustments as recorded by the Company at acquisition: Fair Value As Recorded by (in thousands) As Acquired Adjustments the Company Consideration Paid: Company common stock issued to First Choice Bank common and preferred shareholders $ 151,048 Total consideration paid $ 151,048 Recognized amounts of identifiable assets acquired and (liabilities) assumed, at fair value: Cash and short-term investments $ 5,935 $ — $ 5,935 Investment securities 447,960 (6,009 ) (a) 441,951 Loans held for sale 112,669 — 112,669 Loans, net 437,832 (13,061 ) (b) 424,771 Premises and equipment 6,354 (878 ) (c) 5,476 Core deposit intangibles — 7,690 (d) 7,690 Deferred tax assets, net 9,626 8,175 (e) 17,801 Other assets 42,200 (60 ) (f) 42,140 Deposits (889,993 ) (2,804 ) (g) (892,797 ) Borrowings (51,796 ) 68 (h) (51,728 ) Other liabilities (15,019 ) (5,877 ) (i) (20,896 ) Total identifiable net assets $ 105,768 $ (12,756 ) $ 93,012 Goodwill $ 58,036 ________________________________ Explanation of Certain Fair Value Adjustments (a) The adjustment represents the write down of the book value of securities to their estimated fair value based on estimates at the date of acquisition. (b) The adjustment represents the write-off of the balance of $14.7 million in allowance for loan and lease losses and the write down of the book value of loans to their estimated fair value based on interest rates and expected cash flows as of the acquisition date, which includes an estimate of expected loan loss inherent in the portfolio. Loans with evidence of credit deterioration at acquisition are accounted for under ASC 310-30 and had a book value of $63.8 million and had a fair value of $36.4 million . Non-impaired loans accounted for under ASC 310-20 had a book value of $388.7 million and have a fair value of $388.3 million . ASC 310-30 loans have a $5.4 million fair value adjustment that is accretable in earnings over an estimated three -year life using the effective yield as determined on the date of acquisition. The effective yield is periodically adjusted for changes in expected flows. ASC 310-20 loans have a $5.8 million fair value adjustment premium that is amortized into expense over the remaining term of the loans using the effective interest method, or a straight-line method if the loan is a revolving credit facility. (c) The amount represents the adjustment of the book value of furniture, fixtures, and equipment, to their estimated fair value and the immediate expensing of equipment not meeting the thresholds for capitalization in accordance with Company policy. The adjustments will be depreciated over the remaining estimated economic lives of the assets. (d) The adjustment represents the value of the core deposit base assumed in the acquisition. The core deposit asset was recorded as an identifiable intangible asset and will be amortized over the estimated useful life of the deposit base ( 10 years). (e) Represents net deferred tax assets resulting from the fair value adjustments related to the acquired assets and liabilities, identifiable intangibles, and other purchase accounting adjustments. (f) The amount consists of a $0.5 million write-off of goodwill and intangible assets from a prior First Choice Bank acquisition, a $0.1 million fair value adjustment to write-down other real estate owned based on market report data, and a $0.1 million write-off of prepaid assets due to obsolescence. These adjustments are not accretable into earnings in the statement of income. (g) The adjustment is necessary because the weighted average interest rate of deposits exceeded the cost of similar funding at the time of acquisition. The amount will be amortized over the estimated useful life of one year. (h) Adjusts borrowings to their estimated fair value, which is calculated based on the expected future cash flow of the borrowings. (i) Adjusts the book value of other liabilities to their estimated fair value at the acquisition date. The adjustment consists of a $4.0 million increase for the fair value of the above/below market leases, a $3.4 million establishment of a reserve on certain acquired loans determined to have specific risk at the time of acquisition, a $0.9 million net decrease related to non-level leases, and a $0.6 million write-off of deferred revenue. The following table provides a summary of the assets acquired and liabilities assumed and the associated fair value adjustments as recorded by the Company at acquisition: Fair Value As Recorded by (in thousands) As Acquired Adjustments the Company Consideration paid: Company common stock issued to certain 44 Business Capital shareholders (44,840 shares) $ 1,217 Cash paid to 44 Business Capital shareholders and Parke 55,649 Total consideration paid $ 56,866 Recognized amounts of identifiable assets acquired and (liabilities) assumed, at fair value: Cash and short-term investments $ 107 $ — $ 107 Loans 42,627 (5,400 ) (a) 37,227 Premises and equipment 69 (36 ) (b) 33 Other assets 3,076 639 (c) 3,715 Other liabilities (108 ) — (108 ) Total identifiable net assets $ 45,771 $ (4,797 ) $ 40,974 Goodwill $ 15,892 ________________________________ Explanation of Certain Fair Value Adjustments (a) The adjustment represents the write down of the book value of loans to their estimated fair value based on current interest rates and expected cash flows, which includes an estimate of expected loan loss inherent in the portfolio. Loans with evidence of credit deterioration at acquisition are accounted for under ASC 310-30 and had a book value of $6.3 million and have a fair value $2.9 million . Non-impaired loans accounted for under ASC 310-10 had a book value of $36.4 million and have a fair value of $34.3 million . ASC 310-30 loans have a $708 thousand fair value adjustment discount that is accretable in earnings over an average estimated six -year life using the effective yield as determined on the date of acquisition. The effective yield is periodically adjusted for changes in expected cash flows. ASC 310-10 loans have a $2.1 million fair value adjustment discount that is amortized into income over the remaining term of the loans using the effective interest method. (b) The fair value of the equipment was assumed to approximate the net carrying value based on overall condition and age. The adjustment represents the immediate expensing of equipment not meeting the thresholds for capitalization in accordance with Company policy. The recorded amount will be depreciated over the remaining estimated economic lives of the assets. (c) The adjustment represents the fair value write up of book value of the loan servicing right asset to its estimated fair value based on current interest rates and expected cash flows, which includes an estimate of cost of service and conditional prepayment rates applied to the underlying unpaid loan pool balance over the remaining life of the loans. The balance includes accrued interest of $221 thousand .
Schedule of Acquired Loan Portfolio	Information about the First Choice Bank acquired loan portfolio subject to ASC 310-30 as of December 2, 2016 is as follows (in thousands): ASC 310-30 Loans Gross contractual receivable amounts at acquisition $ 63,820 Contractual cash flows not expected to be collected (nonaccretable discount) (21,926 ) Expected cash flows at acquisition 41,894 Interest component of expected cash flows (accretable discount) (5,417 ) Fair value of acquired loans $ 36,477 Information about the acquired loan portfolio subject to ASC 310-30 as of April 29, 2016 is, as follows (in thousands): ASC 310-30 Loans Gross contractual receivable amounts at acquisition $ 6,265 Contractual cash flows not expected to be collected (nonaccretable discount) (2,623 ) Expected cash flows at acquisition 3,642 Interest component of expected cash flows (accretable discount) (708 ) Fair value of acquired loans $ 2,934 ASC 310-30 Loans Gross contractual receivable amounts at acquisition $ 6,265 Contractual cash flows not expected to be collected (nonaccretable discount) (2,623 ) Expected cash flows at acquisition 3,642 Interest component of expected cash flows (accretable discount) (708 ) Fair value of acquired loans $ 2,934
Pro Forma Financial Information	nformation in the following table is shown in thousands, except earnings per share: Pro Forma (unaudited) 2016 2015 Net interest income $ 259,494 $ 249,533 Non-interest income 137,395 125,855 Net income 79,011 60,852 Pro forma earnings per share: Basic $ 2.25 $ 1.85 Diluted $ 2.24 $ 1.84

SECURITIES (Tables)

SECURITIES (Tables)	12 Months Ended
	Dec. 31, 2016
Investments, Debt and Equity Securities [Abstract]
Summary of securities available for sale ("AFS") and securities	The following is a summary of securities available for sale (“AFS”) and securities held to maturity (“HTM”): (In thousands) Amortized Gross Gross Fair Value December 31, 2016 Securities available for sale Debt securities: Municipal bonds and obligations $ 117,910 $ 2,955 $ (1,049 ) $ 119,816 Agency collateralized mortgage obligations 652,680 2,522 (3,291 ) 651,911 Agency mortgage-backed securities 230,308 557 (2,181 ) 228,684 Agency commercial mortgage-backed securities 65,673 229 (1,368 ) 64,534 Corporate bonds 56,320 408 (722 ) 56,006 Trust preferred securities 11,578 368 (59 ) 11,887 Other bonds and obligations 10,979 195 (16 ) 11,158 Total debt securities 1,145,448 7,234 (8,686 ) 1,143,996 Marketable equity securities 47,858 19,296 (1,613 ) 65,541 Total securities available for sale 1,193,306 26,530 (10,299 ) 1,209,537 Securities held to maturity Municipal bonds and obligations 203,463 3,939 (2,416 ) 204,986 Agency collateralized mortgage obligations 75,655 1,281 (411 ) 76,525 Agency mortgage-backed securities 9,102 — (243 ) 8,859 Agency commercial mortgage-backed securities 10,545 — (434 ) 10,111 Tax advantaged economic development bonds 35,278 1,596 — 36,874 Other bonds and obligations 325 — — 325 Total securities held to maturity 334,368 6,816 (3,504 ) 337,680 Total $ 1,527,674 $ 33,346 $ (13,803 ) $ 1,547,217 December 31, 2015 Securities available for sale Debt securities: Municipal bonds and obligations $ 99,922 $ 4,763 $ (124 ) $ 104,561 Agency collateralized mortgage obligations 833,633 4,957 (5,554 ) 833,036 Agency mortgage-backed securities 127,274 542 (987 ) 126,829 Agency commercial mortgage-backed securities — — — — Corporate bonds 42,849 — (1,826 ) 41,023 Trust preferred securities 11,719 182 (1 ) 11,900 Other bonds and obligations 3,175 — (34 ) 3,141 Total debt securities 1,118,572 10,444 (8,526 ) 1,120,490 Marketable equity securities 30,522 5,331 (1,886 ) 33,967 Total securities available for sale 1,149,094 15,775 (10,412 ) 1,154,457 Securities held to maturity Municipal bonds and obligations 94,642 3,359 (34 ) 97,967 Agency collateralized mortgage-backed securities 68 3 — 71 Tax advantaged economic development bonds 36,613 1,924 — 38,537 Other bonds and obligations 329 — — 329 Total securities held to maturity 131,652 5,286 (34 ) 136,904 Total $ 1,280,746 $ 21,061 $ (10,446 ) $ 1,291,361
Schedule of amortized cost and estimated fair value of available for sale (AFS) and held to maturity (HTM) securities, segregated by contractual maturity	The amortized cost and estimated fair value of available for sale (AFS) and held to maturity (HTM) securities, segregated by contractual maturity at year-end 2016 are presented below. Expected maturities may differ from contractual maturities because issuers may have the right to call or prepay obligations. Mortgage-backed securities are shown in total, as their maturities are highly variable. Equity securities have no maturity and are also shown in total. Available for sale Held to maturity (In thousands) Amortized Fair Amortized Fair Within 1 year $ — $ — $ 1,803 $ 1,806 Over 1 year to 5 years 25,697 26,042 19,674 20,494 Over 5 years to 10 years 48,637 49,397 17,502 17,968 Over 10 years 122,453 123,428 200,087 201,917 Total bonds and obligations 196,787 198,867 239,066 242,185 Marketable equity securities 47,858 65,541 — — Mortgage-backed securities 948,661 945,129 95,302 95,495 Total $ 1,193,306 $ 1,209,537 $ 334,368 $ 337,680
Schedule of amortized cost and fair values of pledged securities	The total amortized cost and fair values of these pledged securities follows. Additionally, there is a blanket lien on certain securities to collateralize borrowings from the FHLBB, as discussed further in Note 12 - Borrowed Funds. 2016 2015 (In thousands) Amortized Fair Amortized Fair Securities pledged to swap counterparties $ 51,292 $ 51,290 $ 27,687 $ 27,626 Securities pledged for municipal deposits 147,950 148,435 134,865 135,755 Total $ 199,242 $ 199,725 $ 162,552 $ 163,381
Schedule of components of net realized gains and losses on the sale of AFS securities	The components of net realized gains and losses on the sale of AFS securities are as follows. These amounts were reclassified out of accumulated other comprehensive loss and into earnings: (In thousands) 2016 2015 2014 Gross realized gains $ 2,762 $ 4,567 $ 2,601 Gross realized losses (3,313 ) (2,457 ) (2,119 ) Net realized (losses)/gains $ (551 ) $ 2,110 $ 482
Schedule of securities with unrealized losses, segregated by the duration of their continuous unrealized loss positions	Securities with unrealized losses, segregated by the duration of their continuous unrealized loss positions, are summarized as follows: Less Than Twelve Months Over Twelve Months Total (In thousands) Gross Fair Gross Fair Gross Fair December 31, 2016 Securities available for sale Debt securities: Municipal bonds and obligations $ 1,049 $ 13,839 $ — $ — $ 1,049 $ 13,839 Agency collateralized mortgage obligations 3,291 319,448 — — 3,291 319,448 Agency mortgage-backed securities 2,153 130,766 28 2,061 2,181 132,827 Agency commercial mortgage-back securities 1,368 44,860 — — 1,368 44,860 Corporate bonds 11 4,780 711 19,655 722 24,435 Trust preferred securities — — 59 1,204 59 1,204 Other bonds and obligations 15 3,014 1 27 16 3,041 Total debt securities 7,887 516,707 799 22,947 8,686 539,654 Marketable equity securities 157 6,600 1,456 5,927 1,613 12,527 Total securities available for sale $ 8,044 $ 523,307 $ 2,255 $ 28,874 $ 10,299 $ 552,181 Securities held to maturity Municipal bonds and obligations 2,416 69,308 — — 2,416 69,308 Agency collateralized mortgage obligations 411 14,724 — — 411 14,724 Agency mortgage-backed securities 243 8,859 — — 243 8,859 Agency commercial mortgage-back securities 434 10,111 — — 434 10,111 Total securities held to maturity 3,504 103,002 — — 3,504 103,002 Total $ 11,548 $ 626,309 $ 2,255 $ 28,874 $ 13,803 $ 655,183 December 31, 2015 Securities available for sale Debt securities: Municipal bonds and obligations $ 9 $ 1,587 $ 115 $ 3,400 $ 124 $ 4,987 Agency collateralized mortgage obligations 2,958 304,907 2,596 136,988 5,554 441,895 Agency mortgage-backed securities 306 34,543 681 35,522 987 70,065 Corporate bonds 30 6,934 1,796 21,587 1,826 28,521 Trust preferred securities 1 1,269 — — 1 1,269 Other bonds and obligations — 108 34 3,032 34 3,140 Total debt securities 3,304 349,348 5,222 200,529 8,526 549,877 Marketable equity securities 534 2,908 1,352 5,729 1,886 8,637 Total securities available for sale $ 3,838 $ 352,256 $ 6,574 $ 206,258 $ 10,412 $ 558,514 Securities held to maturity Municipal bonds and obligations — — 34 2,143 34 2,143 Total securities held to maturity — — 34 2,143 34 2,143 Total $ 3,838 $ 352,256 $ 6,608 $ 208,401 $ 10,446 $ 560,657

LOANS (Tables)

LOANS (Tables)	12 Months Ended
	Dec. 31, 2016
Receivables [Abstract]
Schedule of Loans	The following is a summary of total loans: December 31, 2016 December 31, 2015 (In thousands) Business Activities Loans Acquired Loans Total Business Activities Loans Acquired Loans Total Commercial real estate: Construction $ 253,302 $ 34,207 $ 287,509 $ 210,196 $ 43,474 $ 253,670 Single and multi-family 191,819 125,672 317,491 214,823 36,783 251,606 Other commercial real estate 1,481,223 530,215 2,011,438 1,209,008 345,483 1,554,491 Total commercial real estate 1,926,344 690,094 2,616,438 1,634,027 425,740 2,059,767 Commercial and industrial loans: Asset based lending 321,270 — 321,270 331,253 — 331,253 Other commercial and industrial loans 586,832 153,936 740,768 495,979 221,031 717,010 Total commercial and industrial loans 908,102 153,936 1,062,038 827,232 221,031 1,048,263 Total commercial loans 2,834,446 844,030 3,678,476 2,461,259 646,771 3,108,030 Residential mortgages: 1-4 family 1,583,794 297,355 1,881,149 1,454,233 332,747 1,786,980 Construction 11,178 804 11,982 26,704 1,351 28,055 Total residential mortgages 1,594,972 298,159 1,893,131 1,480,937 334,098 1,815,035 Consumer loans: Home equity 313,521 80,279 393,800 307,159 53,446 360,605 Auto and other 478,368 106,012 584,380 311,328 130,238 441,566 Total consumer loans 791,889 186,291 978,180 618,487 183,684 802,171 Total loans $ 5,221,307 $ 1,328,480 $ 6,549,787 $ 4,560,683 $ 1,164,553 $ 5,725,236
Schedule of Total Unamortized Net Costs and Premiums Included in the Total Loans for Historical Loans	Total unamortized net costs and premiums included in the year-end total loans for business activity loans were the following: (In thousands) December 31, 2016 December 31, 2015 Unamortized net loan origination costs $ 21,972 $ 17,448 Unamortized net premium on purchased loans 4,849 4,694 Total unamortized net costs and premiums $ 26,821 $ 22,142
Schedule of Activity in the Accretable Yield for the Acquired Loan Portfolio that Falls Under the Purview of ASC 310-30, Accounting for Certain Loans or Debt Securities Acquired in a Transfer	The following table summarizes activity in the accretable yield for the acquired loan portfolio that falls under the purview of ASC 310-30, Loans and Debt Securities Acquired with Deteriorated Credit Quality : (In thousands) 2016 2015 Balance at beginning of period $ 6,925 $ 2,541 Acquisitions 6,125 4,777 Reclassification from nonaccretable difference for loans with improved cash flows 2,488 3,640 Changes in expected cash flows that do not affect nonaccretable difference (3,018 ) — Reclassification to TDR (185 ) — Accretion (3,597 ) (4,033 ) Balance at end of period $ 8,738 $ 6,925
Summary of Past Due Loans	The following is a summary of past due loans at December 31, 2016 and 2015: Business Activities Loans (in thousands) 30-59 Days 60-89 Days >90 Days Past Due Total Past Current Total Loans Past Due > December 31, 2016 Commercial real estate: Construction $ — $ — $ — $ — $ 253,302 $ 253,302 $ — Single and multi-family 618 110 624 1,352 190,467 191,819 155 Commercial real estate 481 2,243 4,212 6,936 1,474,287 1,481,223 — Total 1,099 2,353 4,836 8,288 1,918,056 1,926,344 155 Commercial and industrial loans Asset based lending — — — — 321,270 321,270 — Other commercial and industrial loans 3,090 1,301 6,290 10,681 576,151 586,832 5 Total 3,090 1,301 6,290 10,681 897,421 908,102 5 Residential mortgages: 1-4 family 1,393 701 4,179 6,273 1,577,521 1,583,794 1,956 Construction 10 — — 10 11,168 11,178 — Total 1,403 701 4,179 6,283 1,588,689 1,594,972 1,956 Consumer loans: Home equity 99 — 2,981 3,080 310,441 313,521 306 Auto and other 2,483 494 968 3,945 474,423 478,368 16 Total 2,582 494 3,949 7,025 784,864 791,889 322 Total $ 8,174 $ 4,849 $ 19,254 $ 32,277 $ 5,189,030 $ 5,221,307 $ 2,438 Business Activities Loans (in thousands) 30-59 Days 60-89 Days >90 Days Past Due Total Past Current Total Loans Past Due > December 31, 2015 Commercial real estate: Construction $ — $ — $ 58 $ 58 $ 210,138 $ 210,196 $ — Single and multi-family 65 160 70 295 214,528 214,823 — Commercial real estate 1,523 831 3,286 5,640 1,203,368 1,209,008 — Total 1,588 991 3,414 5,993 1,628,034 1,634,027 — Commercial and industrial loans Asset based lending — — — — 331,253 331,253 — Other commercial and industrial loans 1,202 1,105 7,770 10,077 485,902 495,979 146 Total 1,202 1,105 7,770 10,077 817,155 827,232 146 Residential mortgages: 1-4 family 3,537 857 4,304 8,698 1,445,535 1,454,233 2,006 Construction — — — — 26,704 26,704 — Total 3,537 857 4,304 8,698 1,472,239 1,480,937 2,006 Consumer loans: Home equity 563 20 1,658 2,241 304,918 307,159 61 Auto and other 1,230 132 610 1,972 309,356 311,328 59 Total 1,793 152 2,268 4,213 614,274 618,487 120 Total $ 8,120 $ 3,105 $ 17,756 $ 28,981 $ 4,531,702 $ 4,560,683 $ 2,272 Acquired Loans (in thousands) 30-59 Days 60-89 Days >90 Days Past Due Total Past Acquired Total Loans Past Due > December 31, 2016 Commercial real estate: Construction $ — $ — $ — $ — $ 47 $ 34,207 $ — Single and multi-family 2 — 437 439 4,726 125,672 — Commercial real estate 1,555 — 765 2,320 30,047 530,215 — Total 1,557 — 1,202 2,759 34,820 690,094 — Commercial and industrial loans Asset based lending — — — — — — — Other commercial and industrial loans 1,850 15 1,262 3,127 3,369 153,936 24 Total 1,850 15 1,262 3,127 3,369 153,936 24 Residential mortgages: 1-4 family 321 343 2,015 2,679 7,283 297,355 443 Construction — — — — — 804 — Total 321 343 2,015 2,679 7,283 298,159 443 Consumer loans: Home equity 753 — 870 1,623 957 80,279 353 Auto and other 542 314 1,686 2,542 387 106,012 791 Total 1,295 314 2,556 4,165 1,344 186,291 1,144 Total $ 5,023 $ 672 $ 7,035 $ 12,730 $ 46,816 $ 1,328,480 $ 1,611 Acquired Loans (in thousands) 30-59 Days 60-89 Days >90 Days Past Due Total Past Acquired Total Loans Past Due > December 31, 2015 Commercial real estate: Construction $ — $ — $ — $ — $ 1,298 $ 43,474 $ — Single and multi-family — 176 227 403 1,380 36,783 127 Commercial real estate 547 43 1,368 1,958 13,087 345,483 Total 547 219 1,595 2,361 15,765 425,740 127 Commercial and industrial loans: Asset based lending — — — — — — — Other commercial and industrial loans 1,214 505 1,420 3,139 2,775 221,031 785 Total 1,214 505 1,420 3,139 2,775 221,031 785 Residential mortgages: 1-4 family 2,580 311 1,880 4,771 2,572 332,747 212 Construction — — — — — 1,351 — Total 2,580 311 1,880 4,771 2,572 334,098 212 Consumer loans: Home equity 82 277 837 1,196 118 53,446 111 Auto and other 1,491 145 1,081 2,717 132 130,238 187 Total 1,573 422 1,918 3,913 250 183,684 298 Total $ 5,914 $ 1,457 $ 6,813 $ 14,184 $ 21,362 $ 1,164,553 $ 1,422
Summary of Information Pertaining to Non-accrual Loans	The following is summary information pertaining to non-accrual loans at year-end 2016 and 2015: December 31, 2016 December 31, 2015 (In thousands) Business Activities Acquired Loans (1) Total Business Activities Acquired Loans (2) Total Commercial real estate: Construction — — — 59 — 59 Single and multi-family 469 437 906 70 100 170 Other commercial real estate 4,212 765 4,977 3,285 1,368 4,653 Total 4,681 1,202 5,883 3,414 1,468 4,882 Commercial and industrial loans: Asset based lending — — — — — — Other commercial and industrial loans 6,285 1,155 7,440 7,624 597 8,221 Total 6,285 1,155 7,440 7,624 597 8,221 Residential mortgages: 1-4 family $ 2,223 $ 1,572 $ 3,795 $ 2,298 $ 1,668 $ 3,966 Construction — — — — — — Total 2,223 1,572 3,795 2,298 1,668 3,966 Consumer loans: Home equity 2,675 517 3,192 1,597 727 2,324 Auto and other 952 895 1,847 551 893 1,444 Total 3,627 1,412 5,039 2,148 1,620 3,768 Total non-accrual loans $ 16,816 $ 5,341 $ 22,157 $ 15,484 $ 5,353 $ 20,837 (1) At year-end 2016, acquired credit impaired loans account for $83 thousand of loans greater than 90 days past due that are not presented in the above table. (2) At year-end 2015, acquired credit impaired loans account for $39 thousand of loans greater than 90 days past due that are not presented in the above table.
Schedule of Loans Evaluated for Impairment	Loans evaluated for impairment as of December 31, 2016 and 2015 were as follows: Business Activities Loans (In thousands) Commercial Commercial Residential Consumer Total Loans receivable: Balance at end of year Individually evaluated for impairment $ 25,549 $ 5,705 $ 2,775 $ 2,703 $ 36,732 Collectively evaluated 1,900,795 902,397 1,592,197 789,186 5,184,575 Total $ 1,926,344 $ 908,102 $ 1,594,972 $ 791,889 $ 5,221,307 Business Activities Loans (In thousands) Commercial Commercial Residential Consumer Total Loans receivable: Balance at end of year Individually evaluated for impairment $ 11,560 $ 7,191 $ 2,812 $ 1,810 $ 23,373 Collectively evaluated 1,622,467 820,041 1,478,125 616,677 4,537,310 Total $ 1,634,027 $ 827,232 $ 1,480,937 $ 618,487 $ 4,560,683 Acquired Loans (In thousands) Commercial Commercial Residential Consumer Total Loans receivable: Balance at end of year Individually evaluated for impairment $ 4,256 $ 635 $ 308 $ 406 $ 5,605 Purchased credit-impaired loans 34,820 3,369 7,283 1,344 46,816 Collectively evaluated 651,018 149,932 290,568 184,541 1,276,059 Total $ 690,094 $ 153,936 $ 298,159 $ 186,291 $ 1,328,480 Acquired Loans (In thousands) Commercial Commercial Residential Consumer Total Loans receivable: Balance at end of year Individually evaluated for impairment $ 3,749 $ — $ 570 $ 487 $ 4,806 Purchased credit-impaired loans 15,765 2,775 2,572 250 21,362 Collectively evaluated 406,226 218,256 330,956 182,947 1,138,385 Total $ 425,740 $ 221,031 $ 334,098 $ 183,684 $ 1,164,553
Summary of Impaired Loans	The following is a summary of impaired loans at year-end 2016 and 2015 and for the years then ended: Business Activities Loans At December 31, 2016 (In thousands) Recorded Investment Unpaid Principal Related Allowance With no related allowance: Other commercial real estate $ 18,905 $ 18,905 $ — Other commercial and industrial loans 382 382 — Residential mortgages - 1-4 family 2,101 2,101 — Consumer - home equity 1,605 1,605 — With an allowance recorded: Commercial real estate - single and multifamily $ 179 $ 181 $ 2 Other commercial real estate 6,306 6,462 156 Other commercial and industrial loans 5,060 5,324 264 Residential mortgages - 1-4 family 538 674 136 Consumer - home equity 942 1,098 156 Total Commercial real estate $ 25,390 $ 25,548 $ 158 Commercial and industrial 5,442 5,706 264 Residential mortgages 2,639 2,775 136 Consumer 2,547 2,703 156 Total impaired loans $ 36,018 $ 36,732 $ 714 Business Activities Loans At December 31, 2015 (In thousands) Recorded Investment Unpaid Principal Related Allowance With no related allowance: Commercial real estate - construction $ 2,000 $ 2,000 $ — Other commercial real estate 4,613 4,613 — Other commercial and industrial loans 5,828 5,828 — Residential mortgages - 1-4 family 1,181 1,181 — Consumer - home equity 702 702 — Consumer - other 1 1 — With an allowance recorded: Other commercial real estate $ 4,798 $ 4,947 $ 149 Other commercial and industrial loans 1,341 1,362 21 Residential mortgages - 1-4 family 1,479 1,632 153 Consumer - home equity 903 999 96 Consumer - other 101 108 7 Total Commercial real estate $ 11,411 $ 11,560 $ 149 Commercial and industrial 7,169 7,190 21 Residential mortgages 2,660 2,813 153 Consumer 1,707 1,810 103 Total impaired loans $ 22,947 $ 23,373 $ 426 Acquired Loans At December 31, 2016 (In thousands) Recorded Investment Unpaid Principal Related Allowance With no related allowance: Other commercial real estate loans $ 547 $ 547 $ — Residential mortgages - 1-4 family 208 208 — Consumer - home equity — — — Consumer - other — — — With an allowance recorded: Commercial real estate - single and multifamily $ 1,250 $ 1,358 $ 108 Other commercial real estate loans 2,209 2,351 142 Other commercial and industrial loans 576 635 $ 59 Residential mortgages - 1-4 family 89 100 $ 11 Consumer - home equity 292 406 114 Total Commercial real estate $ 4,006 $ 4,256 $ 250 Commercial and industrial 576 635 59 Residential mortgages 297 308 11 Consumer 292 406 114 Total impaired loans $ 5,171 $ 5,605 $ 434 Acquired Loans December 31, 2015 (In thousands) Recorded Investment Unpaid Principal Related Allowance With no related allowance: Other commercial real estate loans $ 1,722 $ 1,722 $ — Residential mortgages - 1-4 family 274 274 — Consumer - home equity 117 117 — Consumer - other 177 177 — With an allowance recorded: Commercial real estate - single and multifamily $ 638 $ 655 $ 17 Other commercial real estate loans 1,964 2,032 68 Residential mortgages - 1-4 family 266 296 $ 30 Consumer - home equity 167 192 25 Total Commercial real estate $ 4,324 $ 4,409 $ 85 Commercial and industrial — — — Residential mortgages 540 570 30 Consumer 461 486 25 Total impaired loans $ 5,325 $ 5,465 $ 140
Summary of the Average Recorded Investment and Interest Income Recognized on Impaired Loans	The following is a summary of the average recorded investment and interest income recognized on impaired loans as of December 31, 2016 and 2015: Business Activities Loans December 31, 2016 December 31, 2015 (in thousands) Average Recorded Cash Basis Interest Average Recorded Cash Basis Interest With no related allowance: Commercial real estate - construction $ — $ — $ 2,245 $ 92 Commercial real estate - single and multifamily 36 1 60 — Other commercial real estate 6,463 1,155 12,487 302 Other commercial and industrial 3,349 131 3,870 177 Residential mortgages - 1-4 family 2,403 91 1,353 38 Consumer-home equity 612 5 442 13 Consumer-other 2 — — — With an allowance recorded: Commercial real estate - single and multifamily 15 6 — — Other commercial real estate 7,576 349 3,214 132 Other commercial and industrial 2,002 225 810 37 Residential mortgages - 1-4 family 682 26 1,704 72 Consumer-home equity 999 35 83 — Consumer - other 103 4 112 4 Total Commercial real estate $ 14,090 $ 1,511 $ 18,006 $ 526 Commercial and industrial 5,351 356 4,680 214 Residential mortgages 3,085 117 3,057 110 Consumer loans 1,716 44 637 17 Total impaired loans $ 24,242 $ 2,028 $ 26,380 $ 867 Acquired Loans December 31, 2016 December 31, 2015 (in thousands) Average Recorded Cash Basis Interest Average Recorded Cash Basis Interest With no related allowance: Commercial real estate - construction $ — $ — $ 445 $ 60 Commercial mortgages - single and multifamily — — 2,014 57 Other commercial real estate 521 20 1,721 37 Commercial business loans 492 9 — — Residential mortgages - 1-4 family 293 12 463 6 Consumer - home equity — — 152 5 Consumer - other 105 1 59 5 With an allowance recorded: Commercial real estate - construction $ — $ — $ — $ — Commercial real estate - single and multifamily 1,064 115 623 33 Other commercial real estate 2,618 165 1,384 96 Residential mortgages - 1-4 family 214 25 304 9 Other commercial and industrial 369 17 31 3 Consumer - home equity — — 195 7 Total Commercial real estate $ 4,203 $ 300 $ 6,187 $ 283 Commercial and industrial 861 26 31 3 Residential mortgages 507 37 767 15 Consumer loans 105 1 406 17 Total impaired loans $ 5,676 $ 364 $ 7,391 $ 318
Schedule of Recorded Investment and Number of Modifications for TDRs Identified During the Period	The following tables include the recorded investment and number of modifications for modified loans identified during the years-ended December 31, 2016, 2015, and 2014 respectively. The tables include the recorded investment in the loans prior to a modification and also the recorded investment in the loans after the loans were restructured. The modifications for the year-ended December 31, 2016 were attributable to interest rate concessions, maturity date extensions, modified payment terms, reamortization, and accelerated maturity. The modifications for the year-ended December 31, 2015 were attributable to interest rate concessions, maturity date extensions, modified payment terms, reamortization, and accelerated maturity. The modifications for the year-ended December 31, 2014 were attributable to interest rate concessions, debt consolidations, and changes to payment terms. Modifications by Class Number of Pre-Modification Post-Modification Troubled Debt Restructurings Commercial - Single and multifamily 5 $ 437 $ 437 Commercial - Other 5 16,651 16,651 Commercial and industrial - Other 4 555 555 Residential - 1-4 Family 2 5 5 Consumer - Home Equity 1 117 117 17 $ 17,765 $ 17,765 Modifications by Class Number of Pre-Modification Post-Modification Troubled Debt Restructurings Commercial - Construction 1 $ 123 $ 123 Commercial - Single and multifamily 2 307 307 Commercial - Other 4 8,577 7,274 Commercial and industrial - Other 6 9,041 8,904 Consumer - Other 1 999 999 14 $ 19,047 $ 17,607 Modifications by Class Number of Pre-Modification Post-Modification Troubled Debt Restructurings Commercial - Single and multifamily 1 $ 623 $ 623 Commercial - Other 10 9,190 9,190 Residential - 1-4 Family 5 600 598 Residential - Construction 1 102 102 17 $ 10,515 $ 10,513 The following tables disclose the recorded investment and number of modifications for TDRs for the prior years where a concession was made and the borrower subsequently defaulted in the respective reporting period. For the year ended 2016, there were no loans that were restructured that had subsequently defaulted during the period. Modifications that subsequently defaulted for the twelve months ending December 31, 2015 Number of Contracts Recorded Investment Troubled Debt Restructurings Commercial - Single and multifamily 1 $ — Commercial - Other 1 373 Commercial and industrial - Other 4 6,579 Residential - 1-4 Family 2 169 8 $ 7,121 Modifications that subsequently defaulted for the twelve months ending December 31, 2014 Number of Contracts Recorded Investment Troubled Debt Restructurings Commercial and industrial - Other 2 $ 101 2 $ 101
Schedule of TDR Activity	The following table presents the Company’s TDR activity in 2016 and 2015: (In thousands) 2016 2015 Balance at beginning of year $ 22,048 $ 16,714 Principal payments (5,870 ) (5,460 ) TDR status change (1) 2,235 — Other reductions (2) (2,348 ) (3,160 ) Newly identified TDRs 17,764 13,954 Balance at end of year $ 33,829 $ 22,048 ________________________________ (1) TDR status change classification represents TDR loans with a specified interest rate equal to or greater than the rate that the Company was willing to accept at the time of the restructuring for a new loan with comparable risk and the loan was on current payment status and not impaired based on the terms specified by the restructuring agreement. (2) Other reductions classification consists of transfer to other real estate owned, charge-offs to loans, and other loan sale payoffs.

LOAN LOSS ALLOWANCE (Tables)

LOAN LOSS ALLOWANCE (Tables)	12 Months Ended
	Dec. 31, 2016
Receivables [Abstract]
Schedule of Activity in the Allowance for Loan Losses	Activity in the allowance for loan losses for 2016, 2015, and 2014 was as follows: Business Activities Loans (In thousands) Commercial Commercial Residential Consumer Unallocated Total Balance at beginning of year $ 14,508 $ 7,317 $ 7,566 $ 4,956 $ 227 $ 34,574 Charged-off loans 2,127 4,620 2,036 1,722 — 10,505 Recoveries on charged-off loans 243 123 159 267 — 792 Provision for loan losses 3,781 6,551 2,063 1,946 27 14,368 Balance at end of year $ 16,405 $ 9,371 $ 7,752 $ 5,447 $ 254 $ 39,229 Individually evaluated for impairment 158 264 136 156 — 714 Collectively evaluated 16,247 9,107 7,616 5,291 254 38,515 Total $ 16,405 $ 9,371 $ 7,752 $ 5,447 $ 254 $ 39,229 Business Activities Loans (In thousands) Commercial real estate Commercial Residential Consumer Unallocated Total Balance at beginning of year $ 14,690 $ 5,206 $ 6,836 $ 5,928 $ 135 $ 32,795 Charged-off loans 6,865 2,358 1,215 1,183 — 11,621 Recoveries on charged-off loans 164 169 141 285 — 759 Provision for loan losses 6,519 4,300 1,804 (74 ) 92 12,641 Balance at end of year $ 14,508 $ 7,317 $ 7,566 $ 4,956 $ 227 $ 34,574 Individually evaluated for impairment 149 21 153 103 — 426 Collectively evaluated 14,359 7,296 7,413 4,853 227 34,148 Total $ 14,508 $ 7,317 $ 7,566 $ 4,956 $ 227 $ 34,574 Business Activities Loans (In thousands) Commercial Commercial Residential Consumer Unallocated Total Balance at beginning of year $ 13,705 $ 5,173 $ 6,937 $ 3,644 $ 68 $ 29,527 Charged-off loans 4,207 2,500 1,455 1,308 — 9,470 Recoveries on charged-off loans 9 193 186 285 — 673 Provision for loan losses 5,183 2,340 1,168 3,307 67 12,065 Balance at end of year $ 14,690 $ 5,206 $ 6,836 $ 5,928 $ 135 $ 32,795 Individually evaluated for impairment 922 — 155 66 — 1,143 Collectively evaluated 13,768 5,206 6,681 5,862 135 31,652 Total $ 14,690 $ 5,206 $ 6,836 $ 5,928 $ 135 $ 32,795 Acquired Loans (In thousands) Commercial Commercial Residential Consumer Unallocated Total Balance at beginning of year $ 1,903 $ 1,330 $ 976 $ 525 $ — $ 4,734 Charged-off loans 977 1,095 829 620 — 3,521 Recoveries on charged-off loans 61 266 144 91 — 562 Provision for loan losses 1,316 663 475 540 — 2,994 Balance at end of year $ 2,303 $ 1,164 $ 766 $ 536 $ — $ 4,769 Individually evaluated for impairment 250 60 11 111 — 432 Purchased credit-impaired loans — — — — — — Collectively evaluated 2,053 1,104 755 425 — 4,337 Total $ 2,303 $ 1,164 $ 766 $ 536 $ — $ 4,769 Acquired Loans (In thousands) Commercial Commercial Residential Consumer Unallocated Total Balance at beginning of year $ 790 $ 1,093 $ 615 $ 369 $ — $ 2,867 Charged-off loans 681 752 642 992 — 3,067 Recoveries on charged-off loans 418 289 64 78 — 849 Provision for loan losses 1,376 700 939 1,070 — 4,085 Balance at end of year $ 1,903 $ 1,330 $ 976 $ 525 $ — $ 4,734 Individually evaluated for impairment 43 — 30 25 — 98 Purchased credit-impaired loans 42 — — — — 42 Collectively evaluated 1,818 1,330 946 500 — 4,594 Total $ 1,903 $ 1,330 $ 976 $ 525 $ — $ 4,734 Acquired Loans (In thousands) Commercial Commercial Residential Consumer Unallocated Total Balance at beginning of year $ 2,339 $ 597 $ 625 $ 235 $ — $ 3,796 Charged-off loans 1,477 510 1,141 1,255 — 4,383 Recoveries on charged-off loans 261 35 179 76 — 551 Provision for loan losses (333 ) 971 952 1,313 — 2,903 Balance at end of year $ 790 $ 1,093 $ 615 $ 369 $ — $ 2,867 Individually evaluated for impairment 48 — 48 75 — 171 Purchased credit-impaired loans — — — — — — Collectively evaluated 742 1,093 567 294 — 2,696 Total $ 790 $ 1,093 $ 615 $ 369 $ — $ 2,867
Schedule of Loans by Risk Rating	The following tables present the Company’s loans by risk rating at year-end 2016 and 2015: Business Activities Loans Commercial Real Estate Credit Risk Profile by Creditworthiness Category Construction Single and multi-family Real Estate Total commercial real estate (In thousands) 2016 2015 2016 2015 2016 2015 2016 2015 Grade: Pass $ 253,302 $ 208,138 $ 189,310 $ 212,900 $ 1,434,762 $ 1,155,770 $ 1,877,374 $ 1,576,808 Special mention — — 334 — 5,827 3,449 6,161 3,449 Substandard — 2,058 2,175 1,923 40,598 49,716 42,773 53,697 Doubtful — — — — 36 73 36 73 Total $ 253,302 $ 210,196 $ 191,819 $ 214,823 $ 1,481,223 $ 1,209,008 $ 1,926,344 $ 1,634,027 Commercial and Industrial Loans Credit Risk Profile by Creditworthiness Category Asset based lending Other Total comm. and industrial (In thousands) 2016 2015 2016 2015 2016 2015 Grade: Pass $ 321,270 $ 331,253 $ 569,704 $ 455,710 $ 890,974 $ 786,963 Special mention — — 123 24,578 123 24,578 Substandard — — 13,825 15,691 13,825 15,691 Doubtful — — 3,180 — 3,180 — Total $ 321,270 $ 331,253 $ 586,832 $ 495,979 $ 908,102 $ 827,232 Residential Mortgages Credit Risk Profile by Internally Assigned Grade 1-4 family Construction Total residential mortgages (In thousands) 2016 2015 2016 2015 2016 2015 Grade: Pass $ 1,578,913 $ 1,449,073 $ 11,178 $ 26,704 $ 1,590,091 $ 1,475,777 Special mention 701 857 — — 701 857 Substandard 4,179 4,303 — — 4,179 4,303 Total $ 1,583,793 $ 1,454,233 $ 11,178 $ 26,704 $ 1,594,971 $ 1,480,937 Consumer Loans Credit Risk Profile Based on Payment Activity Home equity Auto and other Total consumer (In thousands) 2016 2015 2016 2015 2016 2015 Performing $ 310,846 $ 305,562 $ 477,416 $ 310,777 $ 788,262 $ 616,339 Nonperforming 2,675 1,597 952 551 3,627 2,148 Total $ 313,521 $ 307,159 $ 478,368 $ 311,328 $ 791,889 $ 618,487 Acquired Loans Commercial Real Estate Credit Risk Profile by Creditworthiness Category Construction Single and multi-family Real Estate Total commercial real estate (In thousands) 2016 2015 2016 2015 2016 2015 2016 2015 Grade: Pass $ 33,461 $ 42,176 $ 119,414 $ 32,796 $ 496,562 $ 324,614 $ 649,437 $ 399,586 Special mention — — 907 655 1,622 352 2,529 1,007 Substandard 746 1,298 5,351 3,332 32,031 20,517 38,128 25,147 Total $ 34,207 $ 43,474 $ 125,672 $ 36,783 $ 530,215 $ 345,483 $ 690,094 $ 425,740 Commercial and Industrial Loans Credit Risk Profile by Creditworthiness Category Asset based lending Other Total comm. and industrial (In thousands) 2016 2015 2016 2015 2016 2015 Grade: Pass $ — $ — $ 147,102 $ 212,825 $ 147,102 $ 212,825 Special mention — — 1,260 487 1,260 487 Substandard — — 5,574 7,719 5,574 7,719 Total $ — $ — $ 153,936 $ 221,031 $ 153,936 $ 221,031 Residential Mortgages Credit Risk Profile by Internally Assigned Grade 1-4 family Construction Total residential mortgages (In thousands) 2016 2015 2016 2015 2016 2015 Grade: Pass $ 294,983 $ 329,375 $ 804 $ 1,351 $ 295,787 $ 330,726 Special mention 343 311 — — 343 311 Substandard 2,029 3,061 — — 2,029 3,061 Total $ 297,355 $ 332,747 $ 804 $ 1,351 $ 298,159 $ 334,098 Consumer Loans Credit Risk Profile Based on Payment Activity Home equity Auto and other Total consumer (In thousands) 2016 2015 2016 2015 2016 2015 Performing $ 79,762 $ 52,719 $ 105,117 $ 129,345 $ 184,879 $ 182,064 Nonperforming 517 727 895 893 1,412 1,620 Total $ 80,279 $ 53,446 $ 106,012 $ 130,238 $ 186,291 $ 183,684
Summary of Information About Total Loans Rated Special Mention or Lower	The following table summarizes information about total loans rated Special Mention or lower. The table below includes consumer loans that are Special Mention and Substandard accruing that are classified in the above table as performing based on payment activity. December 31, 2016 December 31, 2015 (In thousands) Business Acquired Loans Total Business Acquired Loans Total Non-Accrual $ 16,816 $ 5,424 $ 22,240 $ 15,484 $ 5,391 $ 20,875 Substandard Accruing 51,125 44,177 95,302 60,549 32,560 93,109 Total Classified 67,941 49,601 117,542 76,033 37,951 113,984 Special Mention 7,479 4,323 11,802 29,036 2,259 31,295 Total Criticized $ 75,420 $ 53,924 $ 129,344 $ 105,069 $ 40,210 $ 145,279

PREMISES AND EQUIPMENT (Tables)

PREMISES AND EQUIPMENT (Tables)	12 Months Ended
	Dec. 31, 2016
Property, Plant and Equipment [Abstract]
Summary of Premises and Equipment	Year-end premises and equipment are summarized as follows: (In thousands) 2016 2015 Estimated Useful Land $ 10,563 $ 10,719 N/A Buildings and improvements 85,319 81,058 5 - 39 years Furniture and equipment 42,693 34,950 3 - 7 years Construction in process 4,084 1,860 Premises and equipment, gross 142,659 128,587 Accumulated depreciation and amortization (49,444 ) (40,515 ) Premises and equipment, net $ 93,215 $ 88,072

GOODWILL AND OTHER INTANGIBLES

GOODWILL AND OTHER INTANGIBLES (Tables)	12 Months Ended
	Dec. 31, 2016
Goodwill and Intangible Assets Disclosure [Abstract]
Schedule of Increase in Goodwill and Goodwill by Reporting Units	The activity impacting goodwill in 2016 and 2015 is as follows: (In thousands) 2016 2015 Balance, beginning of the period $ 323,943 $ 264,742 Goodwill acquired and adjusted: 44 Business Capital 15,892 — Ronald N. Lazzaro, PC 5,492 — First Choice Bank 58,036 — Hampden Bancorp Acquisition — 42,513 Firestone Financial — 17,503 Adjustments (1) (257 ) (814 ) Balance, end of the period $ 403,106 $ 323,943 ______________________________________________________________________________________________________ (1) In 2016, goodwill related to the Hampden and Firestone acquisitions was adjusted since acquisition dates to reflect new information available during the one-year measurement period. In 2015, goodwill was adjusted to reflect the subsequent sale of the Company's Tennessee operations, which were originally obtained from the acquisition of Beacon Federal in 2012.
Schedule of Components of Other Intangible Assets	The components of other intangible assets are as follows: (In thousands) Gross Intangible Assets Accumulated Amortization Net Intangible Assets December 31, 2016 Non-maturity deposits (core deposit intangible) $ 44,523 $ (30,099 ) $ 14,424 Insurance contracts 7,558 (7,504 ) 54 All other intangible assets 7,866 (2,899 ) 4,967 Total $ 59,947 $ (40,502 ) $ 19,445 December 31, 2015 Non-maturity deposits (core deposit intangible) $ 36,833 $ (28,099 ) $ 8,734 Insurance contracts 7,558 (6,863 ) 695 All other intangible assets 3,894 (2,659 ) 1,235 Total $ 48,285 $ (37,621 ) $ 10,664

OTHER ASSETS (Tables)

OTHER ASSETS (Tables)	12 Months Ended
	Dec. 31, 2016
Other Assets [Abstract]
Summary of Other Assets	Year-end other assets are summarized as follows: (In thousands) 2016 2015 Capitalized servicing rights $ 11,524 $ 5,187 Accrued interest receivable 26,113 20,940 Investment in tax credits 1,500 2,854 Accrued federal and state tax receivable (1) 19,076 6,731 Derivative assets 21,617 17,507 Other 18,627 11,707 Total other assets $ 98,457 $ 64,926 (1) Accrued federal and state tax receivable as of December 31, 2016 includes $5.9 million of New York State refundable tax credits from investment in historical tax credit partnerships in New York State. This balance was $4 million at year-end 2015.
Schedule of Mortgage Servicing Rights Activity	ervicing rights activity was as follows: (In thousands) 2016 2015 Balance at beginning of year $ 5,187 $ 3,757 Acquired from 44 Business Capital 3,489 — Acquired from First Choice Bank (1) 696 — Additions 4,116 2,622 Amortization (1,964 ) (1,192 ) Balance at end of year $ 11,524 $ 5,187 (1) Amounts acquired from First Choice Bank are accounted for at fair value. The balance as of December 31, 2016 was $798 thousand .

DEPOSITS (Tables)

DEPOSITS (Tables)	12 Months Ended
	Dec. 31, 2016
Deposits [Abstract]
Summary of Time Deposits	A summary of year-end time deposits is as follows: (In thousands) 2016 2015 Maturity date: Within 1 year $ 1,316,973 $ 1,264,948 Over 1 year to 2 years 582,764 446,918 Over 2 years to 3 years 142,160 100,728 Over 3 years to 4 years 150,388 46,146 Over 4 years to 5 years 137,845 123,885 Over 5 years 3,413 3,975 Total $ 2,333,543 $ 1,986,600 Account balances: Less than $100,000 $ 656,055 $ 545,819 $100,000 or more 1,677,488 1,440,781 Total $ 2,333,543 $ 1,986,600

BORROWED FUNDS (Tables)

BORROWED FUNDS (Tables)	12 Months Ended
	Dec. 31, 2016
Debt Disclosure [Abstract]
Schedule of Borrowed Funds	Borrowed funds at December 31, 2016 and 2015 are summarized, as follows: 2016 2015 (in thousands, except rates) Principal Weighted Principal Weighted Short-term borrowings: Advances from the FHLBB $ 1,072,044 0.71 % $ 1,071,200 0.43 % Other Borrowings 10,000 2.42 — — Total short-term borrowings: 1,082,044 0.72 1,071,200 0.43 Long-term borrowings: Advances from the FHLBB 142,792 1.53 103,135 1.89 Subordinated notes 73,697 7.00 73,519 7.00 Junior subordinated notes 15,464 2.77 15,464 2.23 Total long-term borrowings: 231,953 3.35 192,118 3.88 Total $ 1,313,997 1.19 % $ 1,263,318 0.96 %
Summary of Maturities of FHLBB Advances	A summary of maturities of FHLBB advances at year-end 2016 is as follows: 2016 (In thousands) Amount Weighted Fixed rate advances maturing: 2017 $ 1,157,118 0.77 % 2018 43,901 1.33 2019 — — 2020 5,543 1.94 2021 and beyond 8,274 4.06 Total fixed rate advances $ 1,214,836 0.81 Total FHLBB advances $ 1,214,836 0.81 %

OTHER LIABILITIES (Tables)

OTHER LIABILITIES (Tables)	12 Months Ended
	Dec. 31, 2016
Other Liabilities Disclosure [Abstract]
Summary of other liabilities	Year-end other liabilities are summarized as follows: (In thousands) 2016 2015 Derivative liabilities $ 24,420 $ 28,181 Capital lease obligation 11,639 11,939 Asset purchase settlement payable 29,158 — Employee benefits liability 11,661 11,692 Level lease liability 6,997 4,262 Other 49,280 35,370 Total other liabilities $ 133,155 $ 91,444

EMPLOYEE BENEFIT PLANS (Tables)

EMPLOYEE BENEFIT PLANS (Tables)	12 Months Ended
	Dec. 31, 2016
Compensation and Retirement Disclosure [Abstract]
Schedule of changes in the Projected Benefit Obligation and Plan Assets	Information regarding the post-retirement plan at December 31, 2016 and 2015 is as follows: (In thousands) 2016 2015 Change in accumulated postretirement benefit obligation: Accumulated post-retirement benefit obligation at beginning of year $ 3,039 $ 1,604 Prior service cost of long-term care plan participants — 1,595 Service Cost 32 34 Interest cost 129 124 Participant contributions 47 47 Actuarial loss (gain) 130 (284 ) Benefits paid (128 ) (81 ) Amendments — — Accumulated post-retirement benefit obligation at end of year $ 3,249 $ 3,039 Change in plan assets: Fair value of plan assets at beginning of year $ — $ — Contributions by employer 81 34 Contributions by participant 47 47 Benefits paid (128 ) (81 ) Fair value of plan assets at end of year $ — $ — Information regarding the pension plan at December 31, 2016 and 2015 is as follows: (In thousands) 2016 2015 Change in projected benefit obligation: Projected benefit obligation at beginning of year $ 6,585 $ 7,193 Service Cost 76 — Interest cost 267 268 Actuarial gain (308 ) (454 ) Benefits paid (318 ) (351 ) Settlements (176 ) (71 ) Projected benefit obligation at end of year 6,126 6,585 Accumulated benefit obligation 6,126 6,585 Change in fair value of plan assets: Fair value of plan assets at plan beginning of year 5,211 5,756 Actual return on plan assets 404 (123 ) Contributions by employer — — Benefits paid (318 ) (351 ) Settlements (176 ) (71 ) Fair value of plan assets at end of year 5,121 5,211 Underfunded status $ 1,005 $ 1,374
Schedule of Amounts Recognized in Statement of Financial Position	Amounts Recognized in Consolidated Balance Sheet Other Liabilities $ 1,005 $ 1,374 Amounts Recognized in Consolidated Balance Sheet Other Liabilities $ 3,249 $ 3,039
Schedule of Net Periodic Cost	Net periodic post-retirement cost is comprised of the following for the year ended December 31, 2016 and 2015: (In thousands) 2016 2015 Service cost $ 32 $ 34 Interest costs 129 124 Amortization of net prior service credit 83 83 Amortization of net actuarial loss — — Net periodic post-retirement costs $ 244 $ 241 Net periodic pension cost is comprised of the following for the years ended December 31, 2016 and 2015: (In thousands) 2016 2015 Service Cost $ 76 $ — Interest Cost 267 268 Expected return on plan assets (361 ) (455 ) Amortization of unrecognized actuarial loss 163 175 Net periodic pension costs $ 145 $ (12 )
Schedule of Changes in Plan Assets and Benefit Obligations Recognized in Accumulated Other Comprehensive Income	Changes in benefit obligations recognized in accumulated other comprehensive income during 2016 and 2015 are as follows: (In thousands) 2016 2015 Amortization of actuarial loss $ — $ — Amortization of prior service credit (83 ) (83 ) Net actuarial (gain) loss (126 ) (257 ) Total recognized in accumulated other comprehensive income (209 ) (340 ) Accrued post-retirement liability recognized $ 1,718 $ 1,555 Changes in plan assets and benefit obligations recognized in accumulated other comprehensive income during 2016 and 2015 are as follows: (In thousands) 2016 2015 Amortization of actuarial (loss) $ (163 ) $ (176 ) Actuarial (gain) loss (351 ) 125 Total recognized in accumulated other comprehensive income (514 ) (51 ) Total recognized in net periodic pension cost recognized and other comprehensive income $ (369 ) $ (63 )
Schedule of Principal Actuarial Assumptions	The principal actuarial assumptions used at December 31, 2016 and 2015 were as follows: 2016 2015 Projected benefit obligation Discount rate 3.980 % 4.170 % Net periodic pension cost Discount rate 4.170 % 3.820 % Long term rate of return on plan assets 7.000 % 8.000 %
Schedule of Fair Values of the Plan's Assets by Asset Category and Level Within the Fair Value Hierarchy	The fair values of the Plan’s assets by category and level within the fair value hierarchy are as follows at December 31, 2016: Asset Category (In thousands) Total Level 1 Level 2 Equity Mutual Funds: Large-Cap $ 1,624 $ — $ 1,624 Mid-Cap 401 — 401 Small-Cap 415 — 415 International 757 — 757 Fixed Income Funds Fixed Income - US Core 1,378 — 1,378 Intermediate Duration 472 — 472 Cash Equivalents - money market 74 30 44 Total $ 5,121 $ 30 $ 5,091 The fair values of the Plan’s assets by category and level within the fair value hierarchy are as follows at December 31, 2015: Asset Category (In thousands) Total Level 1 Level 2 Equity Mutual Funds: Large-Cap $ 1,516 $ — $ 1,516 Mid-Cap 374 — 374 Small-Cap 362 — 362 International 760 — 760 Fixed Income Funds Fixed Income - US Core 1,564 — 1,564 Intermediate Duration 522 — 522 Cash Equivalents - money market 113 62 51 Total $ 5,211 $ 62 $ 5,149
Schedule of Estimated Benefit Payments	Estimated benefit payments under the Company’s pension plans over the next ten years at December 31, 2016 are as follows: Year Payments (In thousands) 2017 342 2018 338 2019 375 2020 367 2021 357 2022-2026 1,829 Estimated benefit payments under the post-retirement benefit plan over the next ten years at December 31, 2016 are as follows: Year Payments (In thousands) 2017 81 2018 100 2019 100 2020 99 2021 102 2022 - 2026 522
Schedule of Amounts in Accumulated Other Comprehensive Income That Have Not Yet Been Recognized as Components of Net Periodic Benefit Cost	The amounts in accumulated other comprehensive income that have not yet been recognized as components of net periodic benefit cost are as follows: (In thousands) 2016 2015 Net prior service cost (credit) $ 1,659 $ 1,742 Net actuarial (gain) loss (126 ) (257 ) Total recognized in accumulated other comprehensive income 1,533 1,485

INCOME TAXES (Tables)

INCOME TAXES (Tables)	12 Months Ended
	Dec. 31, 2016
Income Tax Disclosure [Abstract]
Schedule of Components of Provision for Income Tax Expense	The components of the Company’s provision for income taxes for the years ended December 31, 2016, 2015, and 2014 were, as follows: (In thousands) 2016 2015 2014 Current: Federal tax expense $ 6,758 $ 4,696 $ 294 State tax expense 1,101 (1,631 ) 305 Total current expense 7,859 3,065 599 Deferred: Federal tax expense 9,438 2,023 8,685 State tax expense 1,591 (24 ) 2,509 Total deferred tax expense 11,029 1,999 11,194 Change in valuation allowance (104 ) — (30 ) Total income tax expense $ 18,784 $ 5,064 $ 11,763
Schedule of Reconciliation of the Statutory Federal Income Tax Rate to Effective Tax Rate	The following is a reconciliation of the statutory federal income tax rate to the Company’s effective tax rate for the years ended December 31, 2016, 2015, and 2014: 2016 2015 2014 (In thousands, except rates) Amount Rate Amount Rate Amount Rate Statutory tax rate $ 27,108 35.0 % $ 19,104 35.0 % $ 15,928 35.0 % Increase (decrease) resulting from: State taxes, net of federal tax benefit 1,675 2.2 (974 ) (1.8 ) 1,810 4.0 Tax exempt income - investments, net (3,849 ) (5.0 ) (3,463 ) (6.3 ) (2,796 ) (6.1 ) Bank-owned life insurance (1,364 ) (1.8 ) (1,284 ) (2.4 ) (1,070 ) (2.4 ) Disallowed merger costs 542 0.7 422 0.8 206 0.5 Non-deductible goodwill on disposal operations sale — — 313 0.6 — — Tax credits, net of basis reduction (6,225 ) (8.0 ) (8,308 ) (15.2 ) (1,658 ) (3.6 ) Change in valuation allowance 125 0.2 — — — — Other, net 772 1.0 (746 ) (1.4 ) (657 ) (1.5 ) Effective tax rate $ 18,784 24.3 % $ 5,064 9.3 % $ 11,763 25.9 %
Schedule of Components of Deferred Tax Assets and Liabilities	As of December 31, 2016 and 2015, significant components of the Company’s deferred tax asset and liabilities were, as follows: (In thousands) 2016 2015 Deferred tax assets: Allowance for loan losses $ 17,747 $ 16,303 Tax credit carryforwards 4,100 7,295 Unrealized capital loss on tax credit investments 6,999 2,892 Net unrealized loss on swaps, securities available for sale, and pension in OCI — 2,371 Employee benefit plans 7,813 8,776 Purchase accounting adjustments 23,520 10,755 Net operating loss and capital loss carryforwards 2,643 3,317 Other 4,997 2,527 Deferred tax assets, net before valuation allowances 67,819 54,236 Valuation allowance (125 ) (229 ) Deferred tax assets, net of valuation allowances $ 67,694 $ 54,007 Deferred tax liabilities: Net unrealized gain on swaps, securities available for sale, and pension in OCI $ (5,884 ) $ — Premises and equipment (2,519 ) (2,577 ) Loan servicing rights (4,546 ) — Intangible amortization (11,543 ) (8,904 ) Other (2,074 ) — Deferred tax liabilities $ (26,566 ) $ (11,481 ) Deferred tax assets, net $ 41,128 $ 42,526
Schedule of Components of the Valuation Allowance on Deferred Tax Asset	The components of the Company’s valuation allowance on its deferred tax asset, net as of December 31, 2016 and 2015 were, as follows: (in thousands) 2016 2015 State tax basis difference, net of Federal tax benefit (of 35%) $ (125 ) $ (229 ) Valuation allowances $ (125 ) $ (229 )
Schedule of Changes in Unrecognized Tax Benefits	The following table presents changes in unrecognized tax benefits for the years ended December 31, 2016, 2015, and 2014: (In thousands) 2016 2015 2014 Unrecognized tax benefits at January 1 $ 307 $ 553 $ 477 Increase in gross amounts of tax positions related to prior years 270 — 55 Increase in gross amounts of tax positions related to current year — — 93 Decrease due to lapse in statute of limitations (117 ) (246 ) (72 ) Unrecognized tax benefits at December 31 $ 460 $ 307 $ 553

DERIVATIVE INSTRUMENTS AND HE46

DERIVATIVE INSTRUMENTS AND HEDGING ACTIVITIES (Tables)	12 Months Ended
	Dec. 31, 2016
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Schedule of Interest Rate Swap Agreements and Non-hedging Derivative Assets and Liabilities	Information about interest rate swap agreements and non-hedging derivative assets and liabilities at December 31, 2016 follows: Notional Amount Weighted Average Maturity Weighted Average Rate Estimated Fair Value Asset (Liability) December 31, 2016 Received Contract pay rate (In thousands) (In years) (In thousands) Cash flow hedges: Interest rate swaps on FHLBB borrowings 300,000 2.3 0.63 % 2.29 % (6,573 ) Total cash flow hedges 300,000 (6,573 ) Economic hedges: Interest rate swap on tax advantaged economic development bond 11,386 12.9 0.98 % 5.09 % (2,021 ) Interest rate swaps on loans with commercial loan customers 668,541 6.2 2.43 % 4.21 % (6,752 ) Reverse interest rate swaps on loans with commercial loan customers 668,541 6.2 4.21 % 2.43 % 7,077 Risk participation agreements with dealer banks 83,360 11.6 5 Forward sale commitments 259,889 0.2 722 Total economic hedges 1,691,717 (969 ) Non-hedging derivatives: Commitments to lend 208,145 0.2 4,738 Total non-hedging derivatives 208,145 4,738 Total $ 2,199,862 $ (2,804 ) Information about interest rate swap agreements and non-hedging derivative asset and liabilities at December 31, 2015 follows: Notional Amount Weighted Average Maturity Weighted Average Rate Estimated Fair Value Asset (Liability) December 31, 2015 Received Contract pay rate (In thousands) (In years) (In thousands) Cash flow hedges: Forward-starting interest rate swaps on FHLBB borrowings 300,000 3.3 0.14 % 2.29 % (8,532 ) Total cash flow hedges 300,000 (8,532 ) Economic hedges: Interest rate swap on tax advantaged economic development bond 11,984 13.9 0.61 % 5.09 % (2,450 ) Interest rate swaps on loans with commercial loan customers 457,392 6.7 2.18 % 4.49 % (17,143 ) Reverse interest rate swaps on loans with commercial loan customers 457,392 6.7 4.49 % 2.18 % 17,129 Risk participation agreements with dealer banks 59,016 15.0 (56 ) Forward sale commitments 44,840 0.2 53 Total economic hedges 1,030,624 (2,467 ) Non-hedging derivatives: Commitments to lend 36,043 0.2 323 Total non-hedging derivatives 36,043 323 Total $ 1,366,667 $ (10,676 )
Schedule of Amounts Included in the Consolidated Statements of income and in Other Comprehensive Income	Amounts included in the Consolidated Statements of Income and in the other comprehensive income section of the Consolidated Statements of Comprehensive Income (related to interest rate derivatives designated as hedges of cash flows), were as follows: Years Ended December 31, (In thousands) 2016 2015 Interest rate swaps on FHLBB borrowings: Unrealized (loss) recognized in accumulated other comprehensive loss $ (2,023 ) $ (5,232 ) Less: Reclassification of unrealized (loss) from accumulated other comprehensive loss to interest expense (3,981 ) — Net tax effect on items recognized in accumulated other comprehensive income (835 ) 2,094 Other comprehensive income recorded in accumulated other comprehensive income, net of reclassification adjustments and tax effects $ 1,123 $ (3,138 ) Net interest expense recognized in interest expense on hedged FHLBB borrowings $ 3,981 $ —
Schedule of Amounts Included in the Consolidated Statements of Income Related to Economic Hedges and Non-hedging Derivatives	Amounts included in the Consolidated Statements of Income related to economic hedges and non-hedging derivatives were as follows: Years Ended December 31, (In thousands) 2016 2015 Economic hedges Interest rate swap on industrial revenue bond: Unrealized gain (loss) recognized in other non-interest income $ (75 ) $ (344 ) Interest rate swaps on loans with commercial loan customers: Unrealized gain (loss) recognized in other non-interest income 1,312 (4,852 ) Reverse interest rate swaps on loans with commercial loan customers: Unrealized (loss) gain recognized in other non-interest income (1,312 ) 4,852 Favorable (unfavorable) change in credit valuation adjustment recognized in other non-interest income 338 (51 ) Risk Participation Agreements: Unrealized gain (loss) recognized in other non-interest income (61 ) (36 ) Forward Commitments: Unrealized (loss) recognized in other non-interest income (1,176 ) (247 ) Realized (loss) gain in other non-interest income (3,705 ) 45 Non-hedging derivatives Interest rate lock commitments: Unrealized gain recognized in other non-interest income $ 8,373 $ 2,436 Realized gain in other non-interest income 3,650 1,899
Schedule of Assets Subject to an Enforceable Master Netting Arrangement	The following table presents the assets and liabilities subject to an enforceable master netting arrangement as of December 31, 2016 and December 31, 2015 : Offsetting of Financial Assets and Derivative Assets Gross Gross Amounts Net Amounts of Assets Gross Amounts Not Offset in the Statements Financial Cash (in thousands) Net Amount As of December 31, 2016 Interest Rate Swap Agreements: Institutional counterparties $ 49 $ — $ 49 $ — $ — $ 49 Commercial counterparties 11,461 — 11,461 — — 11,461 Total $ 11,510 $ — $ 11,510 $ — $ — $ 11,510 Offsetting of Financial Assets and Derivative Assets Gross Gross Amounts Net Amounts of Assets Gross Amounts Not Offset in the Statements Financial Cash (in thousands) Net Amount As of December 31, 2015 Interest Rate Swap Agreements: Institutional counterparties $ 40 $ — $ 40 $ — $ — $ 40 Commercial counterparties 17,129 — 17,129 — — 17,129 Total $ 17,169 $ — $ 17,169 $ — $ — $ 17,169
Schedule of Liabilities Subject to an Enforceable Master Netting Arrangement	Offsetting of Financial Liabilities and Derivative Liabilities Gross Gross Amounts Net Amounts of Liabilities Gross Amounts Not Offset in the Statements Financial Cash (in thousands) Net Amount As of December 31, 2015 Institutional counterparties $ (28,220 ) $ — $ (28,220 ) $ 18,500 $ 9,720 $ — Commercial counterparties — — — — — — Total $ (28,220 ) $ — $ (28,220 ) $ 18,500 $ 9,720 $ — Offsetting of Financial Liabilities and Derivative Liabilities Gross Gross Amounts Net Amounts of Liabilities Gross Amounts Not Offset in the Statements Financial Cash (in thousands) Net Amount As of December 31, 2016 Interest Rate Swap Agreements: Institutional counterparties $ (20,077 ) $ 4,689 $ (15,388 ) $ 14,738 $ 650 $ — Commercial counterparties (4,407 ) 23 (4,384 ) — — (4,384 ) Total $ (24,484 ) $ 4,712 $ (19,772 ) $ 14,738 $ 650 $ (4,384 )

OTHER COMMITMENTS, CONTINGENC47

OTHER COMMITMENTS, CONTINGENCIES, AND OFF-BALANCE SHEET ACTIVITIES (Tables)	12 Months Ended
	Dec. 31, 2016
Commitments and Contingencies Disclosure [Abstract]
Summary of Financial Instruments Outstanding Whose Contract Amounts Represent Credit Risk	A summary of financial instruments outstanding whose contract amounts represent credit risk is as follows at year-end: (In thousands) 2016 2015 Commitments to originate new loans $ 243,519 $ 102,145 Unused funds on commercial and other lines of credit 574,043 525,603 Unadvanced funds on home equity lines of credit 281,621 258,897 Unadvanced funds on construction and real estate loans 320,635 201,764 Standby letters of credit 14,939 12,775 Lease obligation 11,639 11,939 Total $ 1,446,396 $ 1,113,123

SHAREHOLDERS' EQUITY AND EARN48

SHAREHOLDERS' EQUITY AND EARNINGS PER COMMON SHARE (Tables)	12 Months Ended
	Dec. 31, 2016
Stockholders' Equity Note [Abstract]
Schedule of Actual and Required Capital Ratios	The Company and Bank’s actual and required capital amounts were as follows: Minimum Capital Requirement Minimum to be Well Capitalized Under Prompt Corrective Action Provisions Actual (Dollars in thousands) Amount Ratio Amount Ratio Amount Ratio December 31, 2016 Company (Consolidated) Total capital to risk-weighted assets $ 803,618 11.87 % $ 541,603 8.00 % $ 677,004 10.00 % Common Equity Tier 1 Capital to risk weighted assets 670,120 9.90 304,652 4.50 440,053 6.50 Tier 1 capital to risk-weighted assets 681,500 10.07 406,202 6.00 541,603 8.00 Tier 1 capital to average assets 681,500 7.88 270,802 4.00 338,502 5.00 Bank Total capital to risk-weighted assets $ 756,792 11.21 % $ 539,893 8.00 % $ 674,866 10.00 % Common Equity Tier 1 Capital to risk weighted assets 672,244 9.96 303,690 4.50 438,663 6.50 Tier 1 capital to risk-weighted assets 672,244 9.96 404,920 6.00 539,893 8.00 Tier 1 capital to average assets 672,244 7.84 269,920 4.00 337,433 5.00 December 31, 2015 Company (Consolidated) Total capital to risk-weighted assets $ 686,489 11.91 % $ 461,231 8.00 % $ 576,539 10.00 % Common Equity Tier 1 Capital to risk weighted assets 564,878 9.80 259,443 4.50 374,750 6.50 Tier 1 capital to risk-weighted assets 573,033 9.94 345,924 6.00 461,231 8.00 Tier 1 capital to average assets 573,033 7.71 297,420 4.00 371,775 5.00 Bank Total capital to risk-weighted assets $ 642,866 11.16 % $ 460,882 8.00 % $ 576,103 10.00 % Common Equity Tier 1 Capital to risk weighted assets 569,131 9.88 259,246 4.50 374,467 6.50 Tier 1 capital to risk-weighted assets 569,131 9.88 345,662 6.00 460,882 8.00 Tier 1 capital to average assets 569,131 7.66 297,313 4.00 371,641 5.00
Schedule of Components of Accumulated Other Comprehensive Loss	Year-end components of accumulated other comprehensive income/(loss) are as follows: (In thousands) 2016 2015 Other accumulated comprehensive income/(loss), before tax: Net unrealized holding gain on AFS securities $ 25,176 $ 6,316 Net (loss) on effective cash flow hedging derivatives (6,573 ) (8,532 ) Net unrealized holding (loss) on pension plans (2,954 ) (3,469 ) Income taxes related to items of accumulated other comprehensive income/(loss): Net unrealized holding (gain) on AFS securities (9,636 ) (2,437 ) Net loss on effective cash flow hedging derivatives 2,589 3,424 Net unrealized holding loss on pension plans 1,164 1,392 Accumulated other comprehensive income/(loss) $ 9,766 $ (3,305 )
Schedule of Components of Other Comprehensive Loss	The following table presents the components of other comprehensive income (loss) for the years ended December 31, 2016, 2015, and 2014: (In thousands) Before Tax Tax Effect Net of Tax Year Ended December 31, 2016 Net unrealized holding gain on AFS securities: Net unrealized gain arising during the period $ 18,309 $ (6,979 ) $ 11,330 Less: reclassification adjustment for (losses) realized in net income (551 ) 220 (331 ) Net unrealized holding gain on AFS securities 18,860 (7,199 ) 11,661 Net loss on cash flow hedging derivatives: Net unrealized (loss) arising during the period (2,023 ) 754 (1,269 ) Less: reclassification adjustment for (losses) realized in net income (3,981 ) 1,589 (2,392 ) Net gain on cash flow hedging derivatives 1,958 (835 ) 1,123 Net unrealized holding gain on pension plans Net unrealized gain arising during the period 351 (155 ) 196 Less: reclassification adjustment for losses realized in net income 164 (73 ) 91 Net unrealized holding gain on pension plans 515 (228 ) 287 Other Comprehensive Income $ 21,333 $ (8,262 ) $ 13,071 (In thousands) Before Tax Tax Effect Net of Tax Year Ended December 31, 2015 Net unrealized holding (loss) on AFS securities: Net unrealized (loss) arising during the period $ (7,567 ) $ 2,793 $ (4,774 ) Less: reclassification adjustment for gains realized in net income 2,110 (847 ) 1,263 Net unrealized holding (loss) on AFS securities (9,677 ) 3,640 (6,037 ) Net (loss) on cash flow hedging derivatives: Net unrealized (loss) arising during the period (5,232 ) 2,094 (3,138 ) Less: reclassification adjustment for (losses) realized in net income — — — Net (loss) on cash flow hedging derivatives (5,232 ) 2,094 (3,138 ) Net unrealized holding (loss) on pension plans Net unrealized (loss) arising during the period (1,436 ) 572 (864 ) Less: reclassification adjustment for (losses) gains realized in net income (259 ) 104 (155 ) Net unrealized holding (loss) on pension plans (1,177 ) 468 (709 ) Other Comprehensive Loss $ (16,086 ) $ 6,202 $ (9,884 ) (In thousands) Before Tax Tax Effect Net of Tax Year Ended December 31, 2014 Net unrealized holding gain on AFS securities: Net unrealized gain arising during the period $ 25,769 $ (9,791 ) $ 15,978 Less: reclassification adjustment for gains realized in net income 482 (196 ) 286 Net unrealized holding gain on AFS securities 25,287 (9,595 ) 15,692 Net (loss) on cash flow hedging derivatives: Net unrealized (loss) arising during the period (6,403 ) 2,608 (3,795 ) Less: reclassification adjustment for (losses) realized in net income (5,393 ) 2,201 (3,192 ) Net (loss) on cash flow hedging derivatives (1,010 ) 407 (603 ) Net loss on terminated swap: Net unrealized (loss) arising during the period — — — Less: reclassification adjustment for (losses) realized in net income (3,237 ) 1,312 (1,925 ) Net loss on terminated swap 3,237 (1,312 ) 1,925 Net unrealized holding (loss) on pension plans Net unrealized (loss) arising during the period (2,308 ) 930 (1,378 ) Less: reclassification adjustment for gains (losses) realized in net income — — — Net unrealized holding (loss) on pension plans (2,308 ) 930 (1,378 ) Other Comprehensive Income $ 25,206 $ (9,570 ) $ 15,636
Schedule of Gross Changes in Each Component of Accumulated Other Comprehensive Income	The following table presents the changes in each component of accumulated other comprehensive income (loss), for the years ended December 31, 2016 , 2015 , and 2014: (in thousands) Net unrealized holding gain (loss) on AFS Securities Net loss on effective cash flow hedging derivatives Net loss on terminated swap Net unrealized holding gain (loss) on pension plans Total Year Ended December 31, 2016 Balance at Beginning of Year $ 3,880 $ (5,108 ) $ — $ (2,077 ) $ (3,305 ) Other Comprehensive Gain (Loss) before reclassifications 11,330 (1,269 ) — 196 10,257 Amounts Reclassified from Accumulated other comprehensive income (331 ) (2,392 ) — (91 ) (2,814 ) Total Other Comprehensive Income 11,661 1,123 — 287 13,071 Balance at End of Period $ 15,541 $ (3,985 ) $ — $ (1,790 ) $ 9,766 Year Ended December 31, 2015 Balance at Beginning of Year $ 9,916 $ (1,969 ) $ — $ (1,368 ) $ 6,579 Other Comprehensive (Loss) before reclassifications (4,774 ) (3,138 ) — (864 ) (8,776 ) Amounts Reclassified from Accumulated other comprehensive income 1,263 — — (155 ) 1,108 Total Other Comprehensive Loss (6,037 ) (3,138 ) — (709 ) (9,884 ) Balance at End of Period $ 3,880 $ (5,108 ) $ — $ (2,077 ) $ (3,305 ) Year Ended December 31, 2014 Balance at Beginning of Year $ (5,776 ) $ (1,366 ) $ (1,925 ) $ 10 $ (9,057 ) Other Comprehensive Gain (Loss) Before reclassifications 15,978 (3,795 ) — (1,378 ) 10,805 Amounts Reclassified from Accumulated other comprehensive income 286 (3,192 ) (1,925 ) — (4,831 ) Total Other Comprehensive Income 15,692 (603 ) 1,925 (1,378 ) 15,636 Balance at End of Period $ 9,916 $ (1,969 ) $ — $ (1,368 ) $ 6,579
Schedule of Amounts Reclassified out of Each Component of Accumulated Other Comprehensive Income	The following table presents the amounts reclassified out of each component of accumulated other comprehensive income (loss) for the years ended December 31, 2016 , 2015 , and 2014: Affected Line Item in the Years Ended December 31, (in thousands) 2016 2015 2014 Realized (losses) gains on AFS securities: $ (551 ) $ 2,110 $ 482 Non-interest income 220 (847 ) (196 ) Tax expense (331 ) 1,263 286 Realized (losses) on cash flow hedging derivatives: (3,981 ) — (5,393 ) Interest income 1,589 — 2,201 Tax expense (2,392 ) — (3,192 ) Amortization of realized (losses) on terminated swap: — — (3,237 ) Interest income — — 1,312 Tax expense — — (1,925 ) Realized (losses) on pension plans 164 (259 ) — Non-interest expense (73 ) 104 — Tax expense 91 (155 ) — Total reclassifications for the period $ (2,632 ) $ 1,108 $ (4,831 )
Schedule of Earnings Per Share	Earnings per common share has been computed based on the following (average diluted shares outstanding is calculated using the treasury stock method): Years Ended December 31, (In thousands, except per share data) 2016 2015 2014 Net income $ 58,670 $ 49,518 $ 33,744 Average number of common shares issued 32,604 30,074 26,525 Less: average number of treasury shares 1,116 1,215 1,386 Less: average number of unvested stock award shares 500 466 409 Average number of basic common shares outstanding 30,988 28,393 24,730 Plus: dilutive effect of unvested stock award shares 122 106 67 Plus: dilutive effect of stock options outstanding 57 65 57 Average number of diluted common shares outstanding 31,167 28,564 24,854 Basic earning per share $ 1.89 $ 1.74 $ 1.36 Diluted earnings per share $ 1.88 $ 1.73 $ 1.36

STOCK-BASED COMPENSATION PLANS

STOCK-BASED COMPENSATION PLANS (Tables)	12 Months Ended
	Dec. 31, 2016
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Summary of Activity in the Stock Award and Stock Option Plans	A summary of activity in the Company’s stock compensation plans is shown below: Non-vested Stock Stock Options Outstanding (Shares in thousands) Number of Shares Weighted- Average Number of Shares Weighted- Average Exercise Price Balance, December 31, 2015 488 $ 25.09 265 $ 21.11 Granted 211 26.81 — — Stock options exercised — — (151 ) 24.68 Stock awards vested (181 ) 24.44 — — Forfeited (70 ) 25.48 — — Expired — — (5 ) 28.49 Balance, December 31, 2016 448 $ 26.28 109 $ 15.72

FAIR VALUE MEASUREMENTS (Tables

FAIR VALUE MEASUREMENTS (Tables)	12 Months Ended
	Dec. 31, 2016
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Summary of assets and financial liabilities measured at fair value on a recurring basis segregated by the level of the valuation inputs within the fair value hierarchy utilized to measure fair value	The following table summarizes assets and liabilities measured at fair value on a recurring basis as of year-end 2016 and 2015 segregated by the level of the valuation inputs within the fair value hierarchy utilized to measure fair value: December 31, 2016 (In thousands) Level 1 Level 2 Level 3 Total Trading security $ — $ — $ 13,229 $ 13,229 Available-for-sale securities: Municipal bonds and obligations — 119,816 — 119,816 Agency collateralized mortgage obligations — 651,911 — 651,911 Agency residential mortgage-backed securities — 228,684 — 228,684 Agency commercial mortgage-backed securities — 64,534 — 64,534 Corporate bonds — 56,006 — 56,006 Trust preferred securities — 11,887 — 11,887 Other bonds and obligations — 11,158 — 11,158 Marketable equity securities 62,284 3,257 — 65,541 Loans held for sale — 120,673 — 120,673 Derivative assets 622 16,157 4,838 21,617 Other assets — — 798 798 Derivative liabilities — 24,420 — 24,420 December 31, 2015 (In thousands) Level 1 Level 2 Level 3 Total Trading security $ — $ — $ 14,189 $ 14,189 Available-for-sale securities: Municipal bonds and obligations — 104,561 — 104,561 Agency collateralized mortgage obligations — 833,036 — 833,036 Agency residential mortgage-backed securities — 126,829 — 126,829 Agency commercial mortgage-backed securities — — — — Corporate bonds — 41,023 — 41,023 Trust preferred securities — 11,900 — 11,900 Other bonds and obligations — 3,141 — 3,141 Marketable equity securities 32,925 334 708 33,967 Loans held for sale — 13,191 — 13,191 Derivative assets 45 17,130 332 17,507 Other assets — — — — Derivative liabilities — 28,181 — 28,181
Schedule of loans held for sale	Aggregate Aggregate Aggregate Fair Value December 31, 2016 (In thousands) Loans Held for Sale $ 120,673 $ 118,178 $ 2,495 Aggregate Aggregate Aggregate Fair Value December 31, 2015 (In thousands) Loans Held for Sale $ 13,191 $ 12,914 $ 277
Schedule of changes in level 3 assets and liabilities that were measured at fair value on a recurring basis	The table below presents the changes in Level 3 assets that were measured at fair value on a recurring basis at year-end 2016 and 2015 : Assets (Liabilities) (In thousands) Trading Securities Available for Sale Commitments to Lend Forward Capitalized Servicing Rights Balance as of December 31, 2014 $ 14,909 $ 2,326 $ 625 $ (93 ) Sale of AFS Security — (1,327 ) — — — Unrealized (loss) gain, net recognized in other non-interest income (150 ) — 4,364 102 — Unrealized gain included in accumulated other comprehensive loss — (291 ) — — — Paydown of trading security (570 ) — — — — Transfers to loans held for sale — — (4,666 ) — — Balance as of December 31, 2015 $ 14,189 $ 708 $ 323 $ 9 $ — Amounts acquired from First Choice Bank — — 3,900 — 696 Unrealized (loss) gain, net recognized in other non-interest income (362 ) — 13,563 91 102 Unrealized gain included in accumulated other comprehensive loss — — — — — Transfers to Level 2 — (708 ) — — — Paydown of trading security (598 ) — — — — Transfers to loans held for sale — — (13,048 ) — — Balance as of December 31, 2016 $ 13,229 $ — $ 4,738 $ 100 $ 798 Unrealized gains (losses) relating to instruments still held at December 31, 2016 $ 1,843 $ — $ 4,738 $ 100 $ 102 Unrealized gains (losses) relating to instruments still held at December 31, 2015 $ 2,204 $ (61 ) $ 323 $ 9 $ —
Schedule of quantitative information about the significant unobservable inputs within Level 3	The following is a summary of applicable non-recurring fair value measurements. There are no liabilities measured on a non-recurring basis. December 31, 2016 Fair Value Measurements as of December 31, 2016 (In thousands) Level 3 Level 3 Inputs Assets Impaired loans $ 17,761 December 2016 Capitalized servicing rights 10,726 December 2016 Other real estate owned 151 Feb. 2016 - July 2016 Total $ 28,638 December 31, 2015 Fair Value Measurements as of December 31, 2015 (In thousands) Level 3 Level 3 Assets Impaired loans $ 11,657 December 2015 Capitalized servicing rights 5,187 November 2015 Other real estate owned 1,725 Feb. 2014 - October 2015 Total $ 18,569
Summary of applicable non-recurring fair value measurements	The estimated fair values, and related carrying amounts, of the Company’s financial instruments follow. Certain financial instruments and all non-financial instruments are excluded from disclosure requirements. Accordingly, the aggregate fair value amounts presented herein may not necessarily represent the underlying fair value of the Company. December 31, 2016 Carrying Fair (In thousands) Level 1 Level 2 Level 3 Financial Assets Cash and cash equivalents $ 113,075 $ 113,075 $ 113,075 $ — $ — Trading security 13,229 13,229 — — 13,229 Securities available for sale 1,209,537 1,209,537 62,284 1,147,253 — Securities held to maturity 334,368 337,680 — 300,806 36,874 FHLB stock and restricted equity securities 71,112 71,112 — 71,112 — Net loans 6,505,789 6,532,745 — — 6,532,745 Loans held for sale 120,673 120,673 — 120,673 — Accrued interest receivable 26,113 26,113 — 26,113 — Cash surrender value of bank-owned life insurance policies 139,257 139,257 — 139,257 — Derivative assets 21,617 21,617 622 16,157 4,838 Assets held for sale 322 322 — 322 — Financial Liabilities Total deposits 6,622,092 6,624,108 — 6,624,108 — Short-term debt 1,082,044 1,081,996 — 1,081,996 — Long-term FHLB advances 142,792 143,151 — 143,151 — Subordinated notes 89,161 96,973 — 96,973 — Derivative liabilities 24,420 24,420 — 24,420 — December 31, 2015 Carrying Fair (In thousands) Level 1 Level 2 Level 3 Financial Assets Cash and cash equivalents $ 103,562 $ 103,562 $ 103,562 $ — $ — Trading security 14,189 14,189 — — 14,189 Securities available for sale 1,154,457 1,154,457 32,925 1,120,824 708 Securities held to maturity 131,652 136,904 — 98,367 38,537 FHLB stock and restricted equity securities 71,018 71,018 — 71,018 — Net loans 5,685,928 5,727,570 — — 5,727,570 Loans held for sale 13,191 13,191 — 13,191 — Accrued interest receivable 20,940 20,940 — 20,940 — Cash surrender value of bank-owned life insurance policies 125,233 125,233 — 125,233 — Derivative assets 17,507 17,507 45 17,130 332 Assets held for sale 278 278 — 278 — Financial Liabilities Total deposits 5,589,135 5,582,835 — 5,582,835 — Short-term debt 1,071,200 1,071,044 — 1,071,044 — Long-term FHLB advances 103,135 103,397 — 103,397 — Subordinated notes 89,812 93,291 — 93,291 — Derivative liabilities 28,181 28,181 — 28,181 —
Recurring
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Schedule of quantitative information about the significant unobservable inputs within Level 3	Quantitative information about the significant unobservable inputs within Level 3 recurring assets/(liabilities) as of December 31, 2016 and 2015 are as follows: Fair Value Significant Unobservable Input Value (In thousands) December 31, 2016 Valuation Techniques Unobservable Inputs Assets Trading Security $ 13,229 Discounted Cash Flow Discount Rate 2.62 % Forward Commitments 100 Historical Trend Closing Ratio 80.36 % Pricing Model Origination Costs, per loan $ 3,692 Commitments to Lend 4,738 Historical Trend Closing Ratio 80.36 % Pricing Model Origination Costs, per loan $ 3,692 Capitalized Servicing Rights 798 Discounted cash flow Constant prepayment rate (CPR) 10.40 % Discount rate 11.00 % Total $ 18,865 Fair Value Significant (In thousands) December 31, 2015 Valuation Techniques Unobservable Inputs Assets Trading Security $ 14,189 Discounted Cash Flow Discount Rate 2.49 % Securities Available for Sale 708 Pricing Model Median Peer Price/ Tangible Book Value Percentage Multiple 88.52 % Forward Commitments 9 Historical Trend Closing Ratio 92.57 % Pricing Model Origination Costs, per loan $ 2,500 Commitments to Lend 323 Historical Trend Closing Ratio 92.57 % Pricing Model Origination Costs, per loan $ 2,500 Total $ 15,229
Non-recurring
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Schedule of quantitative information about the significant unobservable inputs within Level 3	Quantitative information about the significant unobservable inputs within Level 3 non-recurring assets as of December 31, 2016 and 2015 are as follows: (in thousands) December 31, 2016 Valuation Techniques Unobservable Inputs Range (Weighted Average) (a) Assets Impaired loans $ 17,761 Fair value of collateral Loss severity 0% to 88.70% (9.73%) Appraised value $0 to $2,192 ($1,026) Capitalized servicing rights 10,726 Discounted cash flow Constant prepayment rate (CPR) 7.35% to 14.28% (10.44%) Discount rate 10.00% to 14.00% (11.77%) Other real estate owned 151 Fair value of collateral Appraised value $101 to $129 ($122) Total Assets $ 28,638 (a) Where dollar amounts are disclosed, the amounts represent the lowest and highest fair value of the respective assets in the population except for adjustments for market/property conditions, which represents the range of adjustments to individuals properties. (in thousands) December 31, 2015 Valuation Techniques Unobservable Inputs Range (Weighted Average) (a) Assets Impaired loans $ 11,657 Fair value of collateral Loss severity .05% to 29.50% (7.55%) Appraised value $46.3 to $1962.0 ($999.7) Capitalized servicing rights 5,187 Discounted cash flow Constant prepayment rate (CPR) 7.17% to 12.06% (10.02%) Discount rate 10.00% to 15.00 (10.88%) Other real estate owned 1,725 Fair value of collateral Appraised value $39 to $1,200.0 ($919.9) Total Assets $ 18,569 (a) Where dollar amounts are disclosed, the amounts represent the lowest and highest fair value of the respective assets in the population except for adjustments for market/property conditions, which represents the range of adjustments to individuals properties.

CONDENSED FINANCIAL STATEMENT51

CONDENSED FINANCIAL STATEMENTS OF PARENT COMPANY (Tables)	12 Months Ended
	Dec. 31, 2016
Condensed Financial Information of Parent Company Only Disclosure [Abstract]
Schedule of Condensed Balance Sheets	CONDENSED BALANCE SHEETS December 31, (In thousands) 2016 2015 Assets Cash due from Berkshire Bank $ 43,018 $ 36,082 Investment in subsidiaries 1,127,706 931,171 Securities available for sale, at fair value 23,651 726 Other assets 1,372 10,179 Total assets $ 1,195,747 $ 978,158 Liabilities and Shareholders’ Equity Short term debt $ 10,000 $ — Subordinated notes 89,161 88,983 Accrued expenses 3,288 1,986 Shareholders’ equity 1,093,298 887,189 Total liabilities and shareholders’ equity $ 1,195,747 $ 978,158
Schedule of Condensed Statements of Income	CONDENSED STATEMENTS OF INCOME Years Ended December 31, (In thousands) 2016 2015 2014 Income: Dividends from subsidiaries $ 33,000 $ 34,000 $ 12,000 Other 4,072 2,763 2,317 Total income 37,072 36,763 14,317 Interest expense 5,743 5,674 5,847 Non-interest expenses 3,740 3,670 2,286 Total expense 9,483 9,344 8,133 Income before income taxes and equity in undistributed income of subsidiaries 27,589 27,419 6,184 Income tax benefit (2,123 ) (2,518 ) (2,330 ) Income before equity in undistributed income of subsidiaries 29,712 29,937 8,514 Equity in undistributed income of subsidiaries 28,958 19,581 25,230 Net income $ 58,670 $ 49,518 $ 33,744
Schedule of Condensed Statements of Cash Flows	CONDENSED STATEMENTS OF CASH FLOWS Years Ended December 31, (In thousands) 2016 2015 2014 Cash flows from operating activities: Net income $ 58,670 $ 49,518 $ 33,744 Adjustments to reconcile net income to net cash (used) provided by operating activities: Equity in undistributed income of subsidiaries (28,958 ) (19,581 ) (25,230 ) Other, net 1,988 10,904 3,247 Net cash provided by operating activities 31,700 40,841 11,761 Cash flows from investing activities: Acquisitions, net of cash paid — (3,293 ) — Purchase of securities (18,016 ) (18 ) — Other, net 9,728 — — Net cash (used) provided by investing activities (8,288 ) (3,311 ) — Cash flows from financing activities: Proceed from issuance of short term debt 9,349 (9,935 ) — Net proceeds from common stock 3,712 — — Net proceeds from reissuance of treasury stock — 240 1,064 Payment to repurchase common stock (4,632 ) (550 ) (2,468 ) Common stock cash dividends paid (24,916 ) (21,903 ) (18,075 ) Other, net 11 167 (1,903 ) Net cash provided (used) by financing activities (16,476 ) (31,981 ) (21,382 ) Net change in cash and cash equivalents 6,936 5,549 (9,621 ) Cash and cash equivalents at beginning of year 36,082 30,533 40,154 Cash and cash equivalents at end of year $ 43,018 $ 36,082 $ 30,533

QUARTERLY DATA (UNAUDITED) (Tab

QUARTERLY DATA (UNAUDITED) (Tables)	12 Months Ended
	Dec. 31, 2016
Quarterly Financial Information Disclosure [Abstract]
Schedule of Quarterly Results of Operations	Quarterly results of operations were as follows: 2016 2015 (In thousands, except per share data) Fourth Quarter Third Quarter Second Quarter First Quarter Fourth Quarter Third Quarter Second Quarter First Quarter Interest and dividend income $ 72,434 $ 70,511 $ 69,018 $ 68,476 $ 68,424 $ 65,452 $ 60,403 $ 52,751 Interest expense 13,276 12,540 11,577 10,779 9,676 8,481 7,766 7,258 Net interest income 59,158 57,971 57,441 57,697 58,748 56,971 52,637 45,493 Non-interest income 16,725 18,941 14,555 15,630 12,248 12,698 16,780 12,562 Total revenue 75,883 76,912 71,996 73,327 70,996 69,669 69,417 58,055 Provision for loan losses 4,100 4,734 4,522 4,006 4,431 4,240 4,204 3,851 Non-interest expense 61,090 48,844 46,268 47,100 48,279 49,378 54,025 45,148 Income before income taxes 10,693 23,334 21,206 22,221 18,286 16,051 11,188 9,056 Income tax expense 362 6,953 5,249 6,220 2,273 1,350 1,144 297 Net income $ 10,331 $ 16,381 $ 15,957 $ 16,001 $ 16,013 $ 14,701 $ 10,044 $ 8,759 Basic earnings per share $ 0.32 $ 0.53 $ 0.52 $ 0.52 $ 0.53 $ 0.49 $ 0.35 $ 0.35 Diluted earnings per share $ 0.32 $ 0.53 $ 0.52 $ 0.52 $ 0.52 $ 0.49 $ 0.35 $ 0.35 Weighted average shares outstanding: Basic 32,185 30,621 30,605 30,511 30,500 29,893 28,301 24,803 Diluted 32,381 30,811 30,765 30,688 30,694 30,069 28,461 24,955

NET INTEREST INCOME AFTER PRO53

NET INTEREST INCOME AFTER PROVISION FOR LOAN LOSSES (Tables)	12 Months Ended
	Dec. 31, 2016
Banking and Thrift, Interest [Abstract]
Schedule of Net Interest Income After Provision for Loan Losses	Presented below is net interest income after provision for loan losses for the three years ended 2016, 2015, and 2014, respectively: Years Ended December 31, (In thousands) 2016 2015 2014 Net interest income 232,267 213,849 178,691 Provision for loan losses 17,362 16,726 14,968 Net interest income after provision for loan losses 214,905 197,123 163,723 Total non-interest income 65,851 54,288 47,770 Total non-interest expense 203,302 196,829 165,986 Income from continuing operations before income taxes 77,454 54,582 45,507 Income tax expense 18,784 5,064 11,763 Net income $ 58,670 $ 49,518 $ 33,744

SUMMARY OF SIGNIFICANT ACCOUN54

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details) $ in Millions	3 Months Ended	12 Months Ended
	Mar. 31, 2014USD ($)	Dec. 31, 2016segmentacquisition	Dec. 31, 2015USD ($)acquisition	Dec. 31, 2011acquisition
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Number of days until which automobile loans accrue, after which they are charged off		120 days
Minimum number of days past due for loans excluding automobile loans on which interest is generally not accrued		90 days
Minimum period of past due that the company can reasonably estimate future cash flows of acquired loans		90 days
Threshold of loan-to-value ratio to originate a loan (as a percent)		80.00%
Threshold of loan-to-value ratio for private mortgage insurance (as a percent)		80.00%
Threshold percentage of amortization of net actuarial gain or loss in net periodic benefit cost over the average remaining service period of active participants in the Plans		10.00%
Number of reportable segments (segment)		1
Number of operating segments (segment)		1
Number of acquisitions completed (acquisition) | acquisition		3	2	2
Revision In Interest Income With Income Tax Related Component [Member]
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Correction of an error, in prior period | $	$ (1.4)		$ 0

ACQUISITIONS - 44 BUSINESS CAPI

ACQUISITIONS - 44 BUSINESS CAPITAL NARRATIVE (Details) - USD ($) $ in Thousands	Apr. 29, 2016	Dec. 31, 2016	Dec. 31, 2016	Dec. 31, 2015
Business Acquisition [Line Items]
Loans		$ 6,549,787	$ 6,549,787	$ 5,725,236
44 Business Capital
Business Acquisition [Line Items]
Servicing Asset at Fair Value, Additions	$ 148,000
Acquisition related costs		454	454	285
Commercial real estate
Business Acquisition [Line Items]
Loans		2,616,438	2,616,438	2,059,767
Commercial real estate | 44 Business Capital
Business Acquisition [Line Items]
Loans	35,600
Commercial loans
Business Acquisition [Line Items]
Loans		$ 3,678,476	$ 3,678,476	$ 3,108,030
Commercial loans | 44 Business Capital
Business Acquisition [Line Items]
Loans	$ 1,200
44 Business Capital
Business Acquisition [Line Items]
Ownership percentage (as percent)	51.00%
Non-controlling ownership percentage (as percent)	49.00%

ACQUISITIONS - 44 BUSINESS CA56

ACQUISITIONS - 44 BUSINESS CAPITALS' ASSETS ACQUIRED AND LIABILITIES ASSUMED (Details) - USD ($) $ in Thousands	Apr. 29, 2016	Dec. 31, 2016	Dec. 02, 2016	Dec. 31, 2015	Dec. 31, 2014
Recognized amounts of identifiable assets acquired and (liabilities) assumed, at fair value:
Goodwill		$ 403,106	$ 58,036	$ 323,943	$ 264,742
Loans		6,549,787		5,725,236
Accretable yield		$ 8,738		$ 6,925	$ 2,541
44 Business Capital
Consideration paid:
Company common stock issued	$ 1,217
Cash paid	55,649
Total consideration paid	$ 56,866
Business acquisition, equity interest issued (shares)	44,840
Recognized amounts of identifiable assets acquired and (liabilities) assumed, at fair value:
Cash and short-term investments	$ 107
Loans	37,227
Premises and equipment	33
Other assets	3,715
Other liabilities	(108)
Total identifiable net assets	40,974
Goodwill	15,892
44 Business Capital | Performing
Recognized amounts of identifiable assets acquired and (liabilities) assumed, at fair value:
Loans acquired	34,300
44 Business Capital | Impaired loan
Recognized amounts of identifiable assets acquired and (liabilities) assumed, at fair value:
Loans	6,300
Loans acquired	2,900
Accretable yield	$ 708
Business combination, fair value adjustment, financial assets, fair value discount, amortization period	6 years
Fair value adjustment, amortized into income	$ 2,100
44 Business Capital | As Acquired
Recognized amounts of identifiable assets acquired and (liabilities) assumed, at fair value:
Cash and short-term investments	107
Loans	42,627
Premises and equipment	69
Other assets	3,076
Other liabilities	(108)
Total identifiable net assets	45,771
44 Business Capital | As Acquired | Performing
Recognized amounts of identifiable assets acquired and (liabilities) assumed, at fair value:
Loans	36,400
44 Business Capital | Fair Value Adjustment
Recognized amounts of identifiable assets acquired and (liabilities) assumed, at fair value:
Cash and short-term investments	0
Loans	(5,400)
Premises and equipment	(36)
Other assets	639
Other liabilities	0
Total identifiable net assets	(4,797)
Accrued interest	$ 221

ACQUISITIONS - 44 BUSINESS CA57

ACQUISITIONS - 44 BUSINESS CAPITAL LOAN PORTFOLIO ACQUIRED (Details) - Fair Value Adjustment - 44 Business Capital $ in Thousands	Apr. 29, 2016USD ($)
Business Acquisition [Line Items]
Gross contractual receivable amounts at acquisition	$ 6,265
Contractual cash flows not expected to be collected (nonaccretable discount)	2,623
Expected cash flows at acquisition	3,642
Interest component of expected cash flows (accretable discount)	(708)
Fair value of acquired loans	$ 2,934

ACQUISITIONS - RONALD N. LAZZAR

ACQUISITIONS - RONALD N. LAZZARO, P.C. NARRATIVE (Details) - USD ($)	Dec. 02, 2016	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Business Acquisition [Line Items]
Goodwill	$ 58,036,000	$ 403,106,000	$ 323,943,000	$ 264,742,000
Ronald N. Lazzaro, PC
Business Acquisition [Line Items]
Total consideration paid	10,200,000
Future contingent liability	3,400,000
Goodwill	5,500,000
Acquisition related costs		$ 287,000	$ 0
Ronald N. Lazzaro, PC | Customer relationship intangible
Business Acquisition [Line Items]
Finite-lived intangible asets	$ 4,700,000
Finitel-lived intangible asset, weighted average useful life	10 years

ACQUISITIONS - FIRST CHOICE NAR

ACQUISITIONS - FIRST CHOICE NARRATIVE (Details)	Dec. 02, 2016USD ($)branch$ / sharesshares	Dec. 31, 2016USD ($)shares	Dec. 31, 2015USD ($)shares
Business Acquisition [Line Items]
Common stock, shares outstanding (shares)		35,672,817	30,973,986
First Choice Bank
Business Acquisition [Line Items]
Number of retail bank branches acquired (branch) | branch	8
Preferred stock outstanding (shares)	51,000
Share price (USD per share) | $ / shares	$ 34.25
Total consideration paid | $	$ 151,048,000
Acquisition related costs | $		$ 11,900,000	$ 0
First Choice Bank | Common Stock for Common Stock
Business Acquisition [Line Items]
Business acquisition, equity interest issued (shares)	1,945,000
First Choice Bank | Common stock
Business Acquisition [Line Items]
Business acquisition, equity interest issued (shares)	4,410,000
First Choice Bank | Series A Preferred Stock for Common Stock
Business Acquisition [Line Items]
Conversion ratio	57.7300
First Choice Bank | Series B Preferred Stock for Common Stock
Business Acquisition [Line Items]
Conversion ratio	57.7300
First Choice Bank | Series C Preferred Stock for Common Stock
Business Acquisition [Line Items]
Conversion ratio	50.0694
First Choice Bank | Series D Preferred Stock for Common Stock
Business Acquisition [Line Items]
Conversion ratio	41.2357
First Choice Bank | Series E Preferred Stock for Common Stock
Business Acquisition [Line Items]
Conversion ratio	36.3082
First Choice Bank | Common stock
Business Acquisition [Line Items]
Conversion ratio	0.5773
First Choice Bank | Series A Preferred Stock
Business Acquisition [Line Items]
Preferred stock outstanding (shares)	7,500
First Choice Bank | Series B Preferred Stock
Business Acquisition [Line Items]
Preferred stock outstanding (shares)	15,000
First Choice Bank | Series C Preferred Stock
Business Acquisition [Line Items]
Preferred stock outstanding (shares)	6,000
First Choice Bank | Series D Preferred Stock
Business Acquisition [Line Items]
Preferred stock outstanding (shares)	10,000
First Choice Bank | Series E Preferred Stock
Business Acquisition [Line Items]
Preferred stock outstanding (shares)	12,500
First Choice Bank
Business Acquisition [Line Items]
Excess amount per share in which cash payment was due in lieu of fraction shares (USD per share) | $ / shares	$ 16
First Choice Bank | First Choice Bank | Common stock
Business Acquisition [Line Items]
Common stock, shares outstanding (shares)	3,369,000

ACQUISITIONS - FIRST CHOICE ASS

ACQUISITIONS - FIRST CHOICE ASSESTS ACQUIRED AND LIABILITIES ASSUMED (Details) - USD ($) $ in Thousands	Dec. 02, 2016	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Recognized amounts of identifiable assets acquired and (liabilities) assumed, at fair value:
Goodwill	$ 58,036	$ 403,106	$ 323,943	$ 264,742
Loans		6,549,787	5,725,236
Accretable yield		8,738	$ 6,925	$ 2,541
First Choice Bank
Consideration paid:
Company common stock issued to First Choice Bank common and preferred shareholders	151,048
Total consideration paid	151,048
Recognized amounts of identifiable assets acquired and (liabilities) assumed, at fair value:
Cash and short-term investments	5,935
Investment securities	441,951
Loans held for sale	112,669
Loans	424,771
Premises and equipment	5,476
Core deposit intangibles	7,690
Deferred tax assets, net	17,801
Other assets	42,140
Deposits	(892,797)
Borrowings	(51,728)
Other liabilities	(20,896)
Total identifiable net assets	93,012
Accretable yield	$ 5,417
Useful life of deposits acquired	1 year
First Choice Bank | Nonperforming
Recognized amounts of identifiable assets acquired and (liabilities) assumed, at fair value:
Business combination, fair value adjustment, financial assets, fair value discount, amortization period	3 years
First Choice Bank | Performing
Recognized amounts of identifiable assets acquired and (liabilities) assumed, at fair value:
Loans	$ 388,700
Loans acquired	388,300
First Choice Bank | Impaired loan
Recognized amounts of identifiable assets acquired and (liabilities) assumed, at fair value:
Acquired receivable, contractual amount	63,800
Loans acquired	36,400
As Acquired | First Choice Bank
Recognized amounts of identifiable assets acquired and (liabilities) assumed, at fair value:
Cash and short-term investments	5,935
Investment securities	447,960
Loans held for sale	112,669
Loans	437,832
Premises and equipment	6,354
Core deposit intangibles	0
Deferred tax assets, net	9,626
Other assets	42,200
Deposits	(889,993)
Borrowings	(51,796)
Other liabilities	(15,019)
Total identifiable net assets	105,768
Fair Value Adjustment | First Choice Bank
Recognized amounts of identifiable assets acquired and (liabilities) assumed, at fair value:
Cash and short-term investments	0
Investment securities	(6,009)
Loans held for sale	0
Loans	(13,061)
Premises and equipment	(878)
Core deposit intangibles	7,690
Deferred tax assets, net	8,175
Other assets	(60)
Deposits	(2,804)
Borrowings	68
Other liabilities	(5,877)
Total identifiable net assets	(12,756)
Allowance for loan and lease losses	$ 14,700
Useful life	10 years
Goodwill and intangible asset impairment	$ 500
Accretable yield	5,400
Fair value adjustment, amortized into income	5,800
Fair value adjustment to write-down other real estate owned	$ 100
Write-off of prepaid assets		100
Increase in fair value of market lease		4,000
Reserve for certain acquired loans determined to be at risk		3,400
Net decrease in non-level leases		900
Write-off of deferred revenue		$ 600

ACQUISITIONS - FIRST CHOICE LOA

ACQUISITIONS - FIRST CHOICE LOAN PORTOFOLIO ACQUIRED (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 02, 2016	Dec. 31, 2015	Dec. 31, 2014
Business Acquisition [Line Items]
Interest component of expected cash flows (accretable discount)	$ (8,738)		$ (6,925)	$ (2,541)
First Choice Bank
Business Acquisition [Line Items]
Gross contractual receivable amounts at acquisition		$ 63,820
Contractual cash flows not expected to be collected (nonaccretable discount)		(21,926)
Expected cash flows at acquisition		41,894
Interest component of expected cash flows (accretable discount)		(5,417)
Fair value of acquired loans		$ 36,477

ACQUISITIONS - PRO FORMA NARRAT

ACQUISITIONS - PRO FORMA NARRATIVE (Details) - USD ($) shares in Thousands	1 Months Ended	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2016	Dec. 31, 2015
Business Acquisition [Line Items]
Business acquisition, pro forma estimated tax rate (percent)		40.00%
44 Business Capital
Business Acquisition [Line Items]
Stock issued during period, shares, acquisitions (shares)		45
Revenue of acquiree since acquisition date	$ 5,500,000
Earnings of acquiree since acquisition date	1,300,000
Acquisition related costs	$ 454,000	$ 454,000	$ 285,000
First Choice Bank
Business Acquisition [Line Items]
Stock issued during period, shares, acquisitions (shares)		4,400
Acquisition related costs		$ 11,900,000	$ 0

ACQUISITIONS - PRO FORMA INFORM

ACQUISITIONS - PRO FORMA INFORMATION (Details) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Business Combinations [Abstract]
Net interest income	$ 259,494	$ 249,533
Non-interest income	137,395	125,855
Net income	$ 79,011	$ 60,852
Pro forma earnings per share, basic (USD per share)	$ 2.25	$ 1.85
Pro forma earnings per share, diluted (USD per share)	$ 2.24	$ 1.84

CASH AND CASH EQUIVALENTS (Deta

CASH AND CASH EQUIVALENTS (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
CASH AND CASH EQUIVALENTS
Short-term investments	$ 113,075	$ 103,562
Reserve requirement, included in cash and equivalents	17,000	6,400
Short-term investments pledged as collateral
CASH AND CASH EQUIVALENTS
Short-term investments	$ 900	$ 16,100

TRADING SECURITY (Details)

TRADING SECURITY (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Trading Securities [Abstract]
Amortized cost	$ 11,400	$ 12,000
Fair value	13,229	14,189
Unrealized gains (losses)	$ (400)	$ (200)	$ 600

SECURITIES (Details)

SECURITIES (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Available-for-sale Debt Securities, Amortized Cost Basis [Abstract]
Available-for-sale debt securities, amortized cost basis	$ 1,145,448	$ 1,118,572
Available-for-sale debt securities, accumulated gross unrealized gain, before tax	7,234	10,444
Available-for-sale debt securities, accumulated gross unrealized loss, before tax	(8,686)	(8,526)
Available-for-sale securities, debt securities	1,143,996	1,120,490
Available-for-sale Equity Securities, Amortized Cost Basis [Abstract]
Available-for-sale equity securities, amortized cost basis	47,858	30,522
Available-for-sale equity securities, accumulated gross unrealized gain, before tax	19,296	5,331
Available-for-sale equity securities, accumulated gross unrealized loss, before tax	(1,613)	(1,886)
Available-for-sale securities, equity securities	65,541	33,967
Available-for-sale Securities, Fair Value to Amortized Cost Basis [Abstract]
Available-for-sale securities, amortized cost basis	1,193,306	1,149,094
Available-for-sale securities, accumulated gross unrealized gain, before tax	26,530	15,775
Available-for-sale securities, accumulated gross unrealized loss, before tax	(10,299)	(10,412)
Available-for-securities	1,209,537	1,154,457
Held-to-maturity Securities, Unclassified [Abstract]
Held-to-maturity securities	334,368	131,652
Held-to-maturity securities, accumulated unrecognized holding gain	6,816	5,286
Held-to-maturity securities, accumulated unrecognized holding loss	(3,504)	(34)
Held-to-maturity securities, fair value	337,680	136,904
Available-for-sale Securities and Held-to-maturity Securities [Abstract]
Held to maturity and available for sale securities amortized cost	1,527,674	1,280,746
Held to maturity and available for sale securities, gross unrealized gain	33,346	21,061
Held to maturity and available for sale securities, gross unrealized losses	(13,803)	(10,446)
Available for sale securities and held to maturity securities	1,547,217	1,291,361
Municipal bonds and obligations
Held-to-maturity Securities, Unclassified [Abstract]
Held-to-maturity securities	203,463	94,642
Held-to-maturity securities, accumulated unrecognized holding gain	3,939	3,359
Held-to-maturity securities, accumulated unrecognized holding loss	(2,416)	(34)
Held-to-maturity securities, fair value	204,986	97,967
Agency collateralized mortgage obligations
Held-to-maturity Securities, Unclassified [Abstract]
Held-to-maturity securities	75,655	68
Held-to-maturity securities, accumulated unrecognized holding gain	1,281	3
Held-to-maturity securities, accumulated unrecognized holding loss	(411)	0
Held-to-maturity securities, fair value	76,525	71
Tax advantaged economic development bonds
Held-to-maturity Securities, Unclassified [Abstract]
Held-to-maturity securities	35,278	36,613
Held-to-maturity securities, accumulated unrecognized holding gain	1,596	1,924
Held-to-maturity securities, accumulated unrecognized holding loss	0	0
Held-to-maturity securities, fair value	36,874	38,537
Other bonds and obligations
Held-to-maturity Securities, Unclassified [Abstract]
Held-to-maturity securities	325	329
Held-to-maturity securities, accumulated unrecognized holding gain	0	0
Held-to-maturity securities, accumulated unrecognized holding loss	0	0
Held-to-maturity securities, fair value	325	329
Municipal bonds and obligations
Available-for-sale Debt Securities, Amortized Cost Basis [Abstract]
Available-for-sale debt securities, amortized cost basis	117,910	99,922
Available-for-sale debt securities, accumulated gross unrealized gain, before tax	2,955	4,763
Available-for-sale debt securities, accumulated gross unrealized loss, before tax	(1,049)	(124)
Available-for-sale securities, debt securities	119,816	104,561
Agency collateralized mortgage obligations
Available-for-sale Debt Securities, Amortized Cost Basis [Abstract]
Available-for-sale debt securities, amortized cost basis	652,680	833,633
Available-for-sale debt securities, accumulated gross unrealized gain, before tax	2,522	4,957
Available-for-sale debt securities, accumulated gross unrealized loss, before tax	(3,291)	(5,554)
Available-for-sale securities, debt securities	651,911	833,036
Agency mortgage-backed securities
Available-for-sale Debt Securities, Amortized Cost Basis [Abstract]
Available-for-sale debt securities, amortized cost basis	230,308	127,274
Available-for-sale debt securities, accumulated gross unrealized gain, before tax	557	542
Available-for-sale debt securities, accumulated gross unrealized loss, before tax	(2,181)	(987)
Available-for-sale securities, debt securities	228,684	126,829
Held-to-maturity Securities, Unclassified [Abstract]
Held-to-maturity securities	9,102
Held-to-maturity securities, accumulated unrecognized holding gain	0
Held-to-maturity securities, accumulated unrecognized holding loss	(243)
Held-to-maturity securities, fair value	8,859
Agency commercial mortgage-backed securities
Available-for-sale Debt Securities, Amortized Cost Basis [Abstract]
Available-for-sale debt securities, amortized cost basis	65,673	0
Available-for-sale debt securities, accumulated gross unrealized gain, before tax	229	0
Available-for-sale debt securities, accumulated gross unrealized loss, before tax	(1,368)	0
Available-for-sale securities, debt securities	64,534	0
Held-to-maturity Securities, Unclassified [Abstract]
Held-to-maturity securities	10,545
Held-to-maturity securities, accumulated unrecognized holding gain	0
Held-to-maturity securities, accumulated unrecognized holding loss	(434)
Held-to-maturity securities, fair value	10,111
Corporate bonds
Available-for-sale Debt Securities, Amortized Cost Basis [Abstract]
Available-for-sale debt securities, amortized cost basis	56,320	42,849
Available-for-sale debt securities, accumulated gross unrealized gain, before tax	408	0
Available-for-sale debt securities, accumulated gross unrealized loss, before tax	(722)	(1,826)
Available-for-sale securities, debt securities	56,006	41,023
Trust preferred securities
Available-for-sale Debt Securities, Amortized Cost Basis [Abstract]
Available-for-sale debt securities, amortized cost basis	11,578	11,719
Available-for-sale debt securities, accumulated gross unrealized gain, before tax	368	182
Available-for-sale debt securities, accumulated gross unrealized loss, before tax	(59)	(1)
Available-for-sale securities, debt securities	11,887	11,900
Other bonds and obligations
Available-for-sale Debt Securities, Amortized Cost Basis [Abstract]
Available-for-sale debt securities, amortized cost basis	10,979	3,175
Available-for-sale debt securities, accumulated gross unrealized gain, before tax	195	0
Available-for-sale debt securities, accumulated gross unrealized loss, before tax	(16)	(34)
Available-for-sale securities, debt securities	$ 11,158	$ 3,141

SECURITIES - Narrative (Details

SECURITIES - Narrative (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2016USD ($)security	Dec. 31, 2015USD ($)	Dec. 31, 2014USD ($)
Investment Holdings [Line Items]
Held-to-maturity securities, unrecognized holding gain | $	$ 9,000	$ 954
Proceeds from sales of securities available for sale | $	421,843	41,169	$ 143,488
Available-for-sale securities, accumulated gross unrealized loss before tax | $	10,299	10,412
Securities available for sale, at fair value | $	1,209,537	1,154,457
Level 2
Investment Holdings [Line Items]
Securities available for sale, at fair value | $	$ 1,147,253	1,120,824
Municipal bonds and obligations
Investment Holdings [Line Items]
Aggregate unrealized losses as a percentage of the amortized cost of the securities in unrealized loss positions	3.40%
Number of HTM investment securities in unrealized loss positions (security)	53
Number of securities in the portfolio of HTM (security)	199
Collateralized mortgage obligations
Investment Holdings [Line Items]
Aggregate unrealized losses as a percentage of the amortized cost of the securities in unrealized loss positions	2.70%
Number of HTM investment securities in unrealized loss positions (security)	1
Number of securities in the portfolio of HTM (security)	9
Mortgage-backed Securities
Investment Holdings [Line Items]
Aggregate unrealized losses as a percentage of the amortized cost of the securities in unrealized loss positions	3.50%
Number of HTM investment securities in unrealized loss positions (security)	2
Number of securities in the portfolio of HTM (security)	2
Corporate bonds | One Investment | Level 2
Investment Holdings [Line Items]
Securities available for sale, at fair value | $	$ 16,800
Debt securities | Municipal bonds and obligations
Investment Holdings [Line Items]
Available-for-sale securities in an unrealized loss position (security)	16
Available for sale securities portfolio, number of securities (security)	271
Aggregate unrealized losses as a percentage of the amortized cost of the securities in unrealized loss positions	7.10%
Debt securities | Collateralized mortgage obligations
Investment Holdings [Line Items]
Available-for-sale securities in an unrealized loss position (security)	71
Available for sale securities portfolio, number of securities (security)	218
Aggregate unrealized losses as a percentage of the amortized cost of the securities in unrealized loss positions	1.00%
Debt securities | Mortgage-backed Securities
Investment Holdings [Line Items]
Available-for-sale securities in an unrealized loss position (security)	52
Available for sale securities portfolio, number of securities (security)	105
Aggregate unrealized losses as a percentage of the amortized cost of the securities in unrealized loss positions	2.00%
Debt securities | Corporate bonds
Investment Holdings [Line Items]
Available-for-sale securities in an unrealized loss position (security)	3
Available for sale securities portfolio, number of securities (security)	11
Aggregate unrealized losses as a percentage of the amortized cost of the securities in unrealized loss positions	2.90%
Debt securities | Corporate bonds | One Investment
Investment Holdings [Line Items]
Available-for-sale securities, accumulated gross unrealized loss before tax | $	$ 700
Securities available for sale, at fair value | $	$ 17,500
Debt securities | Trust preferred securities
Investment Holdings [Line Items]
Available-for-sale securities in an unrealized loss position (security)	1
Available for sale securities portfolio, number of securities (security)	3
Aggregate unrealized losses as a percentage of the amortized cost of the securities in unrealized loss positions	4.60%
Debt securities | Other bonds and obligations
Investment Holdings [Line Items]
Available-for-sale securities in an unrealized loss position (security)	5
Available for sale securities portfolio, number of securities (security)	9
Aggregate unrealized losses as a percentage of the amortized cost of the securities in unrealized loss positions	0.50%
Marketable equity securities
Investment Holdings [Line Items]
Available-for-sale securities in an unrealized loss position (security)	7
Available for sale securities portfolio, number of securities (security)	27
Aggregate unrealized losses as a percentage of the amortized cost of the securities in unrealized loss positions	11.40%
Net unrealized holding gain on AFS securities
Investment Holdings [Line Items]
Other accumulated comprehensive income/(loss), before tax | $	$ 25,176	6,316
Income tax benefit related to items of accumulated other comprehensive income/(loss) | $	9,636	2,437
Net unrealized holding gain on AFS securities | Securities Available for Sale
Investment Holdings [Line Items]
Other accumulated comprehensive income/(loss), before tax | $	$ 16,200	$ 5,300

SECURITIES - Amortized Cost and

SECURITIES - Amortized Cost and Estimated Fair Value by Contractual Maturity (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Available for sale, Amortized Cost
Within 1 year	$ 0
Over 1 year to 5 years	25,697
Over 5 years to 10 years	48,637
Over 10 years	122,453
Total bonds and obligations	196,787
Marketable equity securities	47,858	$ 30,522
Mortgage-backed securities	948,661
Available-for-sale securities, amortized cost basis	1,193,306	1,149,094
Available for sale, Fair Value
Within 1 year	0
Over 1 year to 5 years	26,042
Over 5 years to 10 years	49,397
Over 10 years	123,428
Total bonds and obligations	198,867
Marketable equity securities	65,541	33,967
Mortgage-backed securities	945,129
Available-for-securities	1,209,537	1,154,457
Held to maturity, Amortized Cost
Within 1 year	1,803
Over 1 year to 5 years	19,674
Over 5 years to 10 years	17,502
Over 10 years	200,087
Total bonds and obligations	239,066
Mortgage-backed securities	95,302
Held-to-maturity securities	334,368	131,652
Held to maturity, Fair Value
Within 1 year	1,806
Over 1 year to 5 years	20,494
Over 5 years to 10 years	17,968
Over 10 years	201,917
Total bonds and obligations	242,185
Mortgage-backed securities	95,495
Held-to-maturity securities	$ 337,680	$ 136,904

SECURITIES - Pledged Securities

SECURITIES - Pledged Securities (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Amortized Cost
Securities pledged to swap counterparties	$ 51,292	$ 27,687
Securities pledged for municipal deposits	147,950	134,865
Securities pledged, amortized cost	199,242	162,552
Fair Value
Securities pledged to swap counterparties	51,290	27,626
Securities pledged for municipal deposits	148,435	135,755
Securities pledged, fair value	199,725	163,381
Components of net realized gains and losses on the sale of AFS securities
Gross realized gains	2,762	4,567	$ 2,601
Gross realized losses	(3,313)	(2,457)	(2,119)
Net realized (losses)/gains	$ (551)	$ 2,110	$ 482

SECURITIES - Reclassifications

SECURITIES - Reclassifications out of AOCI into Earnings (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Securities available for sale
Less Than Twelve Months, Gross Unrealized Losses	$ 8,044	$ 3,838
Less Than Twelve Months, Fair Value	523,307	352,256
Over Twelve Months, Gross Unrealized Losses	2,255	6,574
Over Twelve Months, Fair Value	28,874	206,258
Total Gross Unrealized Losses	10,299	10,412
Total Fair Value	552,181	558,514
Securities held to maturity
Less Than Twelve Months, Gross Unrealized Losses	3,504	0
Less Than Twelve Months, Fair Value	103,002	0
Over Twelve Months, Gross Unrealized Losses	0	34
Over Twelve Months, Fair Value	0	2,143
Total Gross Unrealized Losses	3,504	34
Total Fair Value	103,002	2,143
Securities available for sale and held to maturity
Less Than Twelve Months, Gross Unrealized Losses	11,548	3,838
Less Than Twelve Months, Fair Value	626,309	352,256
Over Twelve Months, Gross Unrealized Losses	2,255	6,608
Over Twelve Months, Fair Value	28,874	208,401
Total Gross Unrealized Losses	13,803	10,446
Total Fair Value	655,183	560,657
Debt securities
Securities available for sale
Less Than Twelve Months, Gross Unrealized Losses	7,887	3,304
Less Than Twelve Months, Fair Value	516,707	349,348
Over Twelve Months, Gross Unrealized Losses	799	5,222
Over Twelve Months, Fair Value	22,947	200,529
Total Gross Unrealized Losses	8,686	8,526
Total Fair Value	539,654	549,877
Debt securities | Municipal bonds and obligations
Securities available for sale
Less Than Twelve Months, Gross Unrealized Losses	1,049	9
Less Than Twelve Months, Fair Value	13,839	1,587
Over Twelve Months, Gross Unrealized Losses	0	115
Over Twelve Months, Fair Value	0	3,400
Total Gross Unrealized Losses	1,049	124
Total Fair Value	13,839	4,987
Securities held to maturity
Less Than Twelve Months, Gross Unrealized Losses	2,416	0
Less Than Twelve Months, Fair Value	69,308	0
Over Twelve Months, Gross Unrealized Losses	0	34
Over Twelve Months, Fair Value	0	2,143
Total Gross Unrealized Losses	2,416	34
Total Fair Value	69,308	2,143
Debt securities | Agency collateralized mortgage obligations
Securities available for sale
Less Than Twelve Months, Gross Unrealized Losses	3,291	2,958
Less Than Twelve Months, Fair Value	319,448	304,907
Over Twelve Months, Gross Unrealized Losses	0	2,596
Over Twelve Months, Fair Value	0	136,988
Total Gross Unrealized Losses	3,291	5,554
Total Fair Value	319,448	441,895
Securities held to maturity
Less Than Twelve Months, Gross Unrealized Losses	411
Less Than Twelve Months, Fair Value	14,724
Over Twelve Months, Gross Unrealized Losses	0
Over Twelve Months, Fair Value	0
Total Gross Unrealized Losses	411
Total Fair Value	14,724
Debt securities | Agency residential mortgage-backed securities
Securities available for sale
Less Than Twelve Months, Gross Unrealized Losses	2,153	306
Less Than Twelve Months, Fair Value	130,766	34,543
Over Twelve Months, Gross Unrealized Losses	28	681
Over Twelve Months, Fair Value	2,061	35,522
Total Gross Unrealized Losses	2,181	987
Total Fair Value	132,827	70,065
Securities held to maturity
Less Than Twelve Months, Gross Unrealized Losses	243
Less Than Twelve Months, Fair Value	8,859
Over Twelve Months, Gross Unrealized Losses	0
Over Twelve Months, Fair Value	0
Total Gross Unrealized Losses	243
Total Fair Value	8,859
Debt securities | Agency commercial mortgage-backed securities
Securities available for sale
Less Than Twelve Months, Gross Unrealized Losses	1,368
Less Than Twelve Months, Fair Value	44,860
Over Twelve Months, Gross Unrealized Losses	0
Over Twelve Months, Fair Value	0
Total Gross Unrealized Losses	1,368
Total Fair Value	44,860
Securities held to maturity
Less Than Twelve Months, Gross Unrealized Losses	434
Less Than Twelve Months, Fair Value	10,111
Over Twelve Months, Gross Unrealized Losses	0
Over Twelve Months, Fair Value	0
Total Gross Unrealized Losses	434
Total Fair Value	10,111
Debt securities | Corporate bonds
Securities available for sale
Less Than Twelve Months, Gross Unrealized Losses	11	30
Less Than Twelve Months, Fair Value	4,780	6,934
Over Twelve Months, Gross Unrealized Losses	711	1,796
Over Twelve Months, Fair Value	19,655	21,587
Total Gross Unrealized Losses	722	1,826
Total Fair Value	24,435	28,521
Debt securities | Trust preferred securities
Securities available for sale
Less Than Twelve Months, Gross Unrealized Losses	0	1
Less Than Twelve Months, Fair Value	0	1,269
Over Twelve Months, Gross Unrealized Losses	59	0
Over Twelve Months, Fair Value	1,204	0
Total Gross Unrealized Losses	59	1
Total Fair Value	1,204	1,269
Debt securities | Other bonds and obligations
Securities available for sale
Less Than Twelve Months, Gross Unrealized Losses	15	0
Less Than Twelve Months, Fair Value	3,014	108
Over Twelve Months, Gross Unrealized Losses	1	34
Over Twelve Months, Fair Value	27	3,032
Total Gross Unrealized Losses	16	34
Total Fair Value	3,041	3,140
Marketable equity securities
Securities available for sale
Less Than Twelve Months, Gross Unrealized Losses	157	534
Less Than Twelve Months, Fair Value	6,600	2,908
Over Twelve Months, Gross Unrealized Losses	1,456	1,352
Over Twelve Months, Fair Value	5,927	5,729
Total Gross Unrealized Losses	1,613	1,886
Total Fair Value	$ 12,527	$ 8,637

LOANS (Details)

LOANS (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	$ 6,549,787	$ 5,725,236
Commercial loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	3,678,476	3,108,030
Commercial real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	2,616,438	2,059,767
Commercial real estate | Construction
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	287,509	253,670
Commercial real estate | Single and multi-family
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	317,491	251,606
Commercial real estate | Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	2,011,438	1,554,491
Commercial and industrial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	1,062,038	1,048,263
Commercial and industrial | Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	740,768	717,010
Commercial and industrial | Asset based lending
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	321,270	331,253
Residential
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	1,893,131	1,815,035
Residential | Construction
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	11,982	28,055
Residential | 1-4 family
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	1,881,149	1,786,980
Consumer
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	978,180	802,171
Consumer | Home equity
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	393,800	360,605
Consumer | Auto and other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	584,380	441,566
Business Activities Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	5,221,307	4,560,683
Business Activities Loans | Commercial loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	2,834,446	2,461,259
Business Activities Loans | Commercial real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	1,926,344	1,634,027
Business Activities Loans | Commercial real estate | Construction
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	253,302	210,196
Business Activities Loans | Commercial real estate | Single and multi-family
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	191,819	214,823
Business Activities Loans | Commercial real estate | Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	1,481,223	1,209,008
Business Activities Loans | Commercial and industrial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	908,102	827,232
Business Activities Loans | Commercial and industrial | Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	586,832	495,979
Business Activities Loans | Commercial and industrial | Asset based lending
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	321,270	331,253
Business Activities Loans | Residential
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	1,594,972	1,480,937
Business Activities Loans | Residential | Construction
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	11,178	26,704
Business Activities Loans | Residential | 1-4 family
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	1,583,794	1,454,233
Business Activities Loans | Consumer
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	791,889	618,487
Business Activities Loans | Consumer | Home equity
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	313,521	307,159
Business Activities Loans | Consumer | Auto and other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	478,368	311,328
Acquired Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	1,328,480	1,164,553
Acquired Loans | Commercial loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	844,030	646,771
Acquired Loans | Commercial real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	690,094	425,740
Acquired Loans | Commercial real estate | Construction
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	34,207	43,474
Acquired Loans | Commercial real estate | Single and multi-family
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	125,672	36,783
Acquired Loans | Commercial real estate | Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	530,215	345,483
Acquired Loans | Commercial and industrial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	153,936	221,031
Acquired Loans | Commercial and industrial | Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	153,936	221,031
Acquired Loans | Commercial and industrial | Asset based lending
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	0	0
Acquired Loans | Residential
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	298,159	334,098
Acquired Loans | Residential | Construction
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	804	1,351
Acquired Loans | Residential | 1-4 family
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	297,355	332,747
Acquired Loans | Consumer
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	186,291	183,684
Acquired Loans | Consumer | Home equity
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	80,279	53,446
Acquired Loans | Consumer | Auto and other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	$ 106,012	$ 130,238

LOANS - Unamortized Net Costs a

LOANS - Unamortized Net Costs and Premiums (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Receivables [Abstract]
Unamortized net loan origination costs	$ 21,972	$ 17,448
Unamortized net premium on purchased loans	4,849	4,694
Total unamortized net costs and premiums	$ 26,821	$ 22,142

LOANS - Narrative (Details)

LOANS - Narrative (Details) - USD ($)	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Accounts, Notes, Loans and Financing Receivable [Line Items]
Participating serving loans	$ 459,300,000	$ 189,000,000
Payments to acquire loans and leases held-for-investment	190,800,000	124,400,000
Proceeds from sale of loans and leases held-for-investment	307,700,000	121,000,000
Gain (loss) on sales of loans, net	8,000,000	6,000,000	$ 4,000,000
Loans	6,549,787,000	5,725,236,000
Loans pledged as collateral	100,000,000
Due to related parties	38,700,000	3,500,000
Loans receivable, related parties	25,600,000	2,100,000
Non-accrual loans	22,157,000	20,837,000
Additional funds committed amount	$ 0
Borrower's sustained repayment performance period	6 months
Acquired Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	$ 1,328,480,000	1,164,553,000
Acquired credit impaired loans	46,800,000	21,400,000
Non-accrual loans	5,341,000	5,353,000
Commercial real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	2,616,438,000	2,059,767,000
Non-accrual loans	5,883,000	4,882,000
Commercial real estate | Acquired Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	690,094,000	425,740,000
Acquired credit impaired loans	34,800,000	15,800,000
Non-accrual loans	1,202,000	1,468,000
Commercial and industrial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	1,062,038,000	1,048,263,000
Non-accrual loans	7,440,000	8,221,000
Commercial and industrial | Acquired Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	153,936,000	221,031,000
Acquired credit impaired loans	3,400,000	2,800,000
Non-accrual loans	1,155,000	597,000
Residential
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	1,893,131,000	1,815,035,000
Non-accrual loans	3,795,000	3,966,000
Repossessed assets	151,000	675,000
Residential | Mortgages
Accounts, Notes, Loans and Financing Receivable [Line Items]
Collateral for residential mortgage loans	4,800,000	7,500,000
Residential | Acquired Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	298,159,000	334,098,000
Acquired credit impaired loans	7,300,000	2,600,000
Non-accrual loans	1,572,000	1,668,000
Consumer
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	978,180,000	802,171,000
Non-accrual loans	5,039,000	3,768,000
Consumer | Acquired Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	186,291,000	183,684,000
Acquired credit impaired loans	1,300,000	249,000
Non-accrual loans	1,412,000	1,620,000
Total Loans | 6512 Operators of Nonresidential Buildings | Credit Concentration Risk
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	$ 1,100,000,000	$ 800,000,000
Concentration risk, percentage	16.80%	14.70%

LOANS - Accretable Yield (Detai

LOANS - Accretable Yield (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Accretable Yield Movement Schedule [Roll Forward]
Balance at beginning of period	$ 6,925	$ 2,541
Acquisitions	6,125	4,777
Reclassification from nonaccretable difference for loans with improved cash flows	2,488	3,640
Changes in expected cash flows that do not affect nonaccretable difference	(3,018)	0
Reclassification to TDR	(185)	0
Accretion	(3,597)	(4,033)
Balance at end of period	$ 8,738	$ 6,925

LOANS - Summary of Past Due Loa

LOANS - Summary of Past Due Loans for Business Activities Loans (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	$ 6,549,787	$ 5,725,236
Commercial real estate
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	2,616,438	2,059,767
Commercial real estate | Construction
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	287,509	253,670
Commercial real estate | Single and multi-family
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	317,491	251,606
Commercial real estate | Other
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	2,011,438	1,554,491
Commercial and industrial
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	1,062,038	1,048,263
Commercial and industrial | Other
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	740,768	717,010
Commercial and industrial | Asset based lending
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	321,270	331,253
Residential
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	1,893,131	1,815,035
Residential | Construction
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	11,982	28,055
Residential | 1-4 family
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	1,881,149	1,786,980
Consumer
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	978,180	802,171
Consumer | Home equity
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	393,800	360,605
Consumer | Auto and other
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	584,380	441,566
Business Activities Loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	32,277	28,981
Current	5,189,030	4,531,702
Total loans	5,221,307	4,560,683
Past Due greater than 90 days and Accruing	2,438	2,272
Business Activities Loans | 30-59 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	8,174	8,120
Business Activities Loans | 60-89 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	4,849	3,105
Business Activities Loans | 90 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	19,254	17,756
Business Activities Loans | Commercial real estate
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	8,288	5,993
Current	1,918,056	1,628,034
Total loans	1,926,344	1,634,027
Past Due greater than 90 days and Accruing	155	0
Business Activities Loans | Commercial real estate | Construction
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	0	58
Current	253,302	210,138
Total loans	253,302	210,196
Past Due greater than 90 days and Accruing	0	0
Business Activities Loans | Commercial real estate | Single and multi-family
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	1,352	295
Current	190,467	214,528
Total loans	191,819	214,823
Past Due greater than 90 days and Accruing	155	0
Business Activities Loans | Commercial real estate | Other
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	6,936	5,640
Current	1,474,287	1,203,368
Total loans	1,481,223	1,209,008
Past Due greater than 90 days and Accruing	0	0
Business Activities Loans | Commercial real estate | 30-59 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	1,099	1,588
Business Activities Loans | Commercial real estate | 30-59 Days Past Due | Construction
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	0	0
Business Activities Loans | Commercial real estate | 30-59 Days Past Due | Single and multi-family
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	618	65
Business Activities Loans | Commercial real estate | 30-59 Days Past Due | Other
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	481	1,523
Business Activities Loans | Commercial real estate | 60-89 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	2,353	991
Business Activities Loans | Commercial real estate | 60-89 Days Past Due | Construction
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	0	0
Business Activities Loans | Commercial real estate | 60-89 Days Past Due | Single and multi-family
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	110	160
Business Activities Loans | Commercial real estate | 60-89 Days Past Due | Other
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	2,243	831
Business Activities Loans | Commercial real estate | 90 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	4,836	3,414
Business Activities Loans | Commercial real estate | 90 Days Past Due | Construction
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	0	58
Business Activities Loans | Commercial real estate | 90 Days Past Due | Single and multi-family
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	624	70
Business Activities Loans | Commercial real estate | 90 Days Past Due | Other
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	4,212	3,286
Business Activities Loans | Commercial and industrial
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	10,681	10,077
Current	897,421	817,155
Total loans	908,102	827,232
Past Due greater than 90 days and Accruing	5	146
Business Activities Loans | Commercial and industrial | Other
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	10,681	10,077
Current	576,151	485,902
Total loans	586,832	495,979
Past Due greater than 90 days and Accruing	5	146
Business Activities Loans | Commercial and industrial | Asset based lending
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	0	0
Current	321,270	331,253
Total loans	321,270	331,253
Past Due greater than 90 days and Accruing	0	0
Business Activities Loans | Commercial and industrial | 30-59 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	3,090	1,202
Business Activities Loans | Commercial and industrial | 30-59 Days Past Due | Other
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	3,090	1,202
Business Activities Loans | Commercial and industrial | 30-59 Days Past Due | Asset based lending
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	0	0
Business Activities Loans | Commercial and industrial | 60-89 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	1,301	1,105
Business Activities Loans | Commercial and industrial | 60-89 Days Past Due | Other
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	1,301	1,105
Business Activities Loans | Commercial and industrial | 60-89 Days Past Due | Asset based lending
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	0	0
Business Activities Loans | Commercial and industrial | 90 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	6,290	7,770
Business Activities Loans | Commercial and industrial | 90 Days Past Due | Other
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	6,290	7,770
Business Activities Loans | Commercial and industrial | 90 Days Past Due | Asset based lending
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	0	0
Business Activities Loans | Residential
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	6,283	8,698
Current	1,588,689	1,472,239
Total loans	1,594,972	1,480,937
Past Due greater than 90 days and Accruing	1,956	2,006
Business Activities Loans | Residential | Construction
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	10	0
Current	11,168	26,704
Total loans	11,178	26,704
Past Due greater than 90 days and Accruing	0	0
Business Activities Loans | Residential | 1-4 family
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	6,273	8,698
Current	1,577,521	1,445,535
Total loans	1,583,794	1,454,233
Past Due greater than 90 days and Accruing	1,956	2,006
Business Activities Loans | Residential | 30-59 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	1,403	3,537
Business Activities Loans | Residential | 30-59 Days Past Due | Construction
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	10	0
Business Activities Loans | Residential | 30-59 Days Past Due | 1-4 family
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	1,393	3,537
Business Activities Loans | Residential | 60-89 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	701	857
Business Activities Loans | Residential | 60-89 Days Past Due | Construction
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	0	0
Business Activities Loans | Residential | 60-89 Days Past Due | 1-4 family
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	701	857
Business Activities Loans | Residential | 90 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	4,179	4,304
Business Activities Loans | Residential | 90 Days Past Due | Construction
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	0	0
Business Activities Loans | Residential | 90 Days Past Due | 1-4 family
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	4,179	4,304
Business Activities Loans | Consumer
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	7,025	4,213
Current	784,864	614,274
Total loans	791,889	618,487
Past Due greater than 90 days and Accruing	322	120
Business Activities Loans | Consumer | Home equity
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	3,080	2,241
Current	310,441	304,918
Total loans	313,521	307,159
Past Due greater than 90 days and Accruing	306	61
Business Activities Loans | Consumer | Auto and other
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	3,945	1,972
Current	474,423	309,356
Total loans	478,368	311,328
Past Due greater than 90 days and Accruing	16	59
Business Activities Loans | Consumer | 30-59 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	2,582	1,793
Business Activities Loans | Consumer | 30-59 Days Past Due | Home equity
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	99	563
Business Activities Loans | Consumer | 30-59 Days Past Due | Auto and other
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	2,483	1,230
Business Activities Loans | Consumer | 60-89 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	494	152
Business Activities Loans | Consumer | 60-89 Days Past Due | Home equity
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	0	20
Business Activities Loans | Consumer | 60-89 Days Past Due | Auto and other
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	494	132
Business Activities Loans | Consumer | 90 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	3,949	2,268
Business Activities Loans | Consumer | 90 Days Past Due | Home equity
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	2,981	1,658
Business Activities Loans | Consumer | 90 Days Past Due | Auto and other
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	$ 968	$ 610

LOANS - Summary of Past Due L76

LOANS - Summary of Past Due Loans for Acquired Loans (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Financing Receivable, Recorded Investment, Past Due [Line Items]
Non-accrual loans	$ 22,157	$ 20,837
Total loans	6,549,787	5,725,236
Commercial real estate
Financing Receivable, Recorded Investment, Past Due [Line Items]
Non-accrual loans	5,883	4,882
Total loans	2,616,438	2,059,767
Commercial real estate | Construction
Financing Receivable, Recorded Investment, Past Due [Line Items]
Non-accrual loans	0	59
Total loans	287,509	253,670
Commercial real estate | Single and multi-family
Financing Receivable, Recorded Investment, Past Due [Line Items]
Non-accrual loans	906	170
Total loans	317,491	251,606
Commercial real estate | Other
Financing Receivable, Recorded Investment, Past Due [Line Items]
Non-accrual loans	4,977	4,653
Total loans	2,011,438	1,554,491
Commercial and industrial
Financing Receivable, Recorded Investment, Past Due [Line Items]
Non-accrual loans	7,440	8,221
Total loans	1,062,038	1,048,263
Commercial and industrial | Other
Financing Receivable, Recorded Investment, Past Due [Line Items]
Non-accrual loans	7,440	8,221
Total loans	740,768	717,010
Commercial and industrial | Asset based lending
Financing Receivable, Recorded Investment, Past Due [Line Items]
Non-accrual loans	0	0
Total loans	321,270	331,253
Residential
Financing Receivable, Recorded Investment, Past Due [Line Items]
Non-accrual loans	3,795	3,966
Total loans	1,893,131	1,815,035
Residential | Construction
Financing Receivable, Recorded Investment, Past Due [Line Items]
Non-accrual loans	0	0
Total loans	11,982	28,055
Residential | 1-4 family
Financing Receivable, Recorded Investment, Past Due [Line Items]
Non-accrual loans	3,795	3,966
Total loans	1,881,149	1,786,980
Consumer
Financing Receivable, Recorded Investment, Past Due [Line Items]
Non-accrual loans	5,039	3,768
Total loans	978,180	802,171
Consumer | Home equity
Financing Receivable, Recorded Investment, Past Due [Line Items]
Non-accrual loans	3,192	2,324
Total loans	393,800	360,605
Consumer | Auto and other
Financing Receivable, Recorded Investment, Past Due [Line Items]
Non-accrual loans	1,847	1,444
Total loans	584,380	441,566
Acquired Loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
Non-accrual loans	5,341	5,353
Total Past Due	12,730	14,184
Acquired Credit Impaired	46,816	21,362
Total loans	1,328,480	1,164,553
Past Due greater than 90 days and Accruing	1,611	1,422
Acquired Loans | Commercial real estate
Financing Receivable, Recorded Investment, Past Due [Line Items]
Non-accrual loans	1,202	1,468
Total Past Due	2,759	2,361
Acquired Credit Impaired	34,820	15,765
Total loans	690,094	425,740
Past Due greater than 90 days and Accruing	0	127
Acquired Loans | Commercial real estate | Construction
Financing Receivable, Recorded Investment, Past Due [Line Items]
Non-accrual loans	0	0
Total Past Due	0	0
Acquired Credit Impaired	47	1,298
Total loans	34,207	43,474
Past Due greater than 90 days and Accruing	0	0
Acquired Loans | Commercial real estate | Single and multi-family
Financing Receivable, Recorded Investment, Past Due [Line Items]
Non-accrual loans	437	100
Total Past Due	439	403
Acquired Credit Impaired	4,726	1,380
Total loans	125,672	36,783
Past Due greater than 90 days and Accruing	0	127
Acquired Loans | Commercial real estate | Other
Financing Receivable, Recorded Investment, Past Due [Line Items]
Non-accrual loans	765	1,368
Total Past Due	2,320	1,958
Acquired Credit Impaired	30,047	13,087
Total loans	530,215	345,483
Acquired Loans | Commercial and industrial
Financing Receivable, Recorded Investment, Past Due [Line Items]
Non-accrual loans	1,155	597
Total Past Due	3,127	3,139
Acquired Credit Impaired	3,369	2,775
Total loans	153,936	221,031
Past Due greater than 90 days and Accruing	24	785
Acquired Loans | Commercial and industrial | Other
Financing Receivable, Recorded Investment, Past Due [Line Items]
Non-accrual loans	1,155	597
Total Past Due	3,127	3,139
Acquired Credit Impaired	3,369	2,775
Total loans	153,936	221,031
Past Due greater than 90 days and Accruing	24	785
Acquired Loans | Commercial and industrial | Asset based lending
Financing Receivable, Recorded Investment, Past Due [Line Items]
Non-accrual loans	0	0
Total Past Due	0	0
Acquired Credit Impaired	0	0
Total loans	0	0
Past Due greater than 90 days and Accruing	0	0
Acquired Loans | Residential
Financing Receivable, Recorded Investment, Past Due [Line Items]
Non-accrual loans	1,572	1,668
Total Past Due	2,679	4,771
Acquired Credit Impaired	7,283	2,572
Total loans	298,159	334,098
Past Due greater than 90 days and Accruing	443	212
Acquired Loans | Residential | Construction
Financing Receivable, Recorded Investment, Past Due [Line Items]
Non-accrual loans	0	0
Total Past Due	0	0
Acquired Credit Impaired	0	0
Total loans	804	1,351
Past Due greater than 90 days and Accruing	0	0
Acquired Loans | Residential | 1-4 family
Financing Receivable, Recorded Investment, Past Due [Line Items]
Non-accrual loans	1,572	1,668
Total Past Due	2,679	4,771
Acquired Credit Impaired	7,283	2,572
Total loans	297,355	332,747
Past Due greater than 90 days and Accruing	443	212
Acquired Loans | Consumer
Financing Receivable, Recorded Investment, Past Due [Line Items]
Non-accrual loans	1,412	1,620
Total Past Due	4,165	3,913
Acquired Credit Impaired	1,344	250
Total loans	186,291	183,684
Past Due greater than 90 days and Accruing	1,144	298
Acquired Loans | Consumer | Home equity
Financing Receivable, Recorded Investment, Past Due [Line Items]
Non-accrual loans	517	727
Total Past Due	1,623	1,196
Acquired Credit Impaired	957	118
Total loans	80,279	53,446
Past Due greater than 90 days and Accruing	353	111
Acquired Loans | Consumer | Auto and other
Financing Receivable, Recorded Investment, Past Due [Line Items]
Non-accrual loans	895	893
Total Past Due	2,542	2,717
Acquired Credit Impaired	387	132
Total loans	106,012	130,238
Past Due greater than 90 days and Accruing	791	187
Acquired Loans | 30-59 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	5,023	5,914
Acquired Loans | 30-59 Days Past Due | Commercial real estate
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	1,557	547
Acquired Loans | 30-59 Days Past Due | Commercial real estate | Construction
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	0	0
Acquired Loans | 30-59 Days Past Due | Commercial real estate | Single and multi-family
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	2	0
Acquired Loans | 30-59 Days Past Due | Commercial real estate | Other
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	1,555	547
Acquired Loans | 30-59 Days Past Due | Commercial and industrial
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	1,850	1,214
Acquired Loans | 30-59 Days Past Due | Commercial and industrial | Other
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	1,850	1,214
Acquired Loans | 30-59 Days Past Due | Commercial and industrial | Asset based lending
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	0	0
Acquired Loans | 30-59 Days Past Due | Residential
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	321	2,580
Acquired Loans | 30-59 Days Past Due | Residential | Construction
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	0	0
Acquired Loans | 30-59 Days Past Due | Residential | 1-4 family
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	321	2,580
Acquired Loans | 30-59 Days Past Due | Consumer
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	1,295	1,573
Acquired Loans | 30-59 Days Past Due | Consumer | Home equity
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	753	82
Acquired Loans | 30-59 Days Past Due | Consumer | Auto and other
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	542	1,491
Acquired Loans | 60-89 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	672	1,457
Acquired Loans | 60-89 Days Past Due | Commercial real estate
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	0	219
Acquired Loans | 60-89 Days Past Due | Commercial real estate | Construction
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	0	0
Acquired Loans | 60-89 Days Past Due | Commercial real estate | Single and multi-family
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	0	176
Acquired Loans | 60-89 Days Past Due | Commercial real estate | Other
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	0	43
Acquired Loans | 60-89 Days Past Due | Commercial and industrial
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	15	505
Acquired Loans | 60-89 Days Past Due | Commercial and industrial | Other
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	15	505
Acquired Loans | 60-89 Days Past Due | Commercial and industrial | Asset based lending
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	0	0
Acquired Loans | 60-89 Days Past Due | Residential
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	343	311
Acquired Loans | 60-89 Days Past Due | Residential | Construction
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	0	0
Acquired Loans | 60-89 Days Past Due | Residential | 1-4 family
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	343	311
Acquired Loans | 60-89 Days Past Due | Consumer
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	314	422
Acquired Loans | 60-89 Days Past Due | Consumer | Home equity
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	0	277
Acquired Loans | 60-89 Days Past Due | Consumer | Auto and other
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	314	145
Acquired Loans | 90 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	7,035	6,813
Acquired Loans | 90 Days Past Due | Commercial real estate
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	1,202	1,595
Acquired Loans | 90 Days Past Due | Commercial real estate | Construction
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	0	0
Acquired Loans | 90 Days Past Due | Commercial real estate | Single and multi-family
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	437	227
Acquired Loans | 90 Days Past Due | Commercial real estate | Other
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	765	1,368
Acquired Loans | 90 Days Past Due | Commercial and industrial
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	1,262	1,420
Acquired Loans | 90 Days Past Due | Commercial and industrial | Other
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	1,262	1,420
Acquired Loans | 90 Days Past Due | Commercial and industrial | Asset based lending
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	0	0
Acquired Loans | 90 Days Past Due | Residential
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	2,015	1,880
Acquired Loans | 90 Days Past Due | Residential | Construction
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	0	0
Acquired Loans | 90 Days Past Due | Residential | 1-4 family
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	2,015	1,880
Acquired Loans | 90 Days Past Due | Consumer
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	2,556	1,918
Acquired Loans | 90 Days Past Due | Consumer | Home equity
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	870	837
Acquired Loans | 90 Days Past Due | Consumer | Auto and other
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	1,686	1,081
Acquired Impaired Loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
Non-accrual loans	$ 83	$ 39

LOANS - Non-accrual Loans (Deta

LOANS - Non-accrual Loans (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total non-accrual loans	$ 22,157	$ 20,837
Business Activities Loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total non-accrual loans	16,816	15,484
Acquired Loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total non-accrual loans	5,341	5,353
Commercial real estate
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total non-accrual loans	5,883	4,882
Commercial real estate | Business Activities Loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total non-accrual loans	4,681	3,414
Commercial real estate | Acquired Loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total non-accrual loans	1,202	1,468
Commercial real estate | Construction
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total non-accrual loans	0	59
Commercial real estate | Construction | Business Activities Loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total non-accrual loans	0	59
Commercial real estate | Construction | Acquired Loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total non-accrual loans	0	0
Commercial real estate | Single and multi-family
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total non-accrual loans	906	170
Commercial real estate | Single and multi-family | Business Activities Loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total non-accrual loans	469	70
Commercial real estate | Single and multi-family | Acquired Loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total non-accrual loans	437	100
Commercial real estate | Other
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total non-accrual loans	4,977	4,653
Commercial real estate | Other | Business Activities Loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total non-accrual loans	4,212	3,285
Commercial real estate | Other | Acquired Loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total non-accrual loans	765	1,368
Commercial and industrial
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total non-accrual loans	7,440	8,221
Commercial and industrial | Business Activities Loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total non-accrual loans	6,285	7,624
Commercial and industrial | Acquired Loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total non-accrual loans	1,155	597
Commercial and industrial | Asset based lending
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total non-accrual loans	0	0
Commercial and industrial | Asset based lending | Business Activities Loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total non-accrual loans	0	0
Commercial and industrial | Asset based lending | Acquired Loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total non-accrual loans	0	0
Commercial and industrial | Other
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total non-accrual loans	7,440	8,221
Commercial and industrial | Other | Business Activities Loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total non-accrual loans	6,285	7,624
Commercial and industrial | Other | Acquired Loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total non-accrual loans	1,155	597
Residential
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total non-accrual loans	3,795	3,966
Residential | Business Activities Loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total non-accrual loans	2,223	2,298
Residential | Acquired Loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total non-accrual loans	1,572	1,668
Residential | Construction
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total non-accrual loans	0	0
Residential | Construction | Business Activities Loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total non-accrual loans	0	0
Residential | Construction | Acquired Loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total non-accrual loans	0	0
Residential | 1-4 family
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total non-accrual loans	3,795	3,966
Residential | 1-4 family | Business Activities Loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total non-accrual loans	2,223	2,298
Residential | 1-4 family | Acquired Loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total non-accrual loans	1,572	1,668
Consumer
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total non-accrual loans	5,039	3,768
Consumer | Business Activities Loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total non-accrual loans	3,627	2,148
Consumer | Acquired Loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total non-accrual loans	1,412	1,620
Consumer | Home equity
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total non-accrual loans	3,192	2,324
Consumer | Home equity | Business Activities Loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total non-accrual loans	2,675	1,597
Consumer | Home equity | Acquired Loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total non-accrual loans	517	727
Consumer | Auto and other
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total non-accrual loans	1,847	1,444
Consumer | Auto and other | Business Activities Loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total non-accrual loans	952	551
Consumer | Auto and other | Acquired Loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total non-accrual loans	$ 895	$ 893

LOANS - Loans Evaluated for Imp

LOANS - Loans Evaluated for Impairment (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Allowance for loan losses
Total loans	$ 6,549,787	$ 5,725,236
Business Activities Loans
Allowance for loan losses
Individually evaluated for impairment	36,732	23,373
Collectively evaluated	5,184,575	4,537,310
Total loans	5,221,307	4,560,683
Acquired Loans
Allowance for loan losses
Individually evaluated for impairment	5,605	4,806
Purchased credit-impaired loans	46,816	21,362
Collectively evaluated	1,276,059	1,138,385
Total loans	1,328,480	1,164,553
Commercial real estate
Allowance for loan losses
Total loans	2,616,438	2,059,767
Commercial real estate | Business Activities Loans
Allowance for loan losses
Individually evaluated for impairment	25,549	11,560
Collectively evaluated	1,900,795	1,622,467
Total loans	1,926,344	1,634,027
Commercial real estate | Acquired Loans
Allowance for loan losses
Individually evaluated for impairment	4,256	3,749
Purchased credit-impaired loans	34,820	15,765
Collectively evaluated	651,018	406,226
Total loans	690,094	425,740
Commercial and industrial
Allowance for loan losses
Total loans	1,062,038	1,048,263
Commercial and industrial | Business Activities Loans
Allowance for loan losses
Individually evaluated for impairment	5,705	7,191
Collectively evaluated	902,397	820,041
Total loans	908,102	827,232
Commercial and industrial | Acquired Loans
Allowance for loan losses
Individually evaluated for impairment	635	0
Purchased credit-impaired loans	3,369	2,775
Collectively evaluated	149,932	218,256
Total loans	153,936	221,031
Residential mortgages
Allowance for loan losses
Total loans	1,893,131	1,815,035
Residential mortgages | Business Activities Loans
Allowance for loan losses
Individually evaluated for impairment	2,775	2,812
Collectively evaluated	1,592,197	1,478,125
Total loans	1,594,972	1,480,937
Residential mortgages | Acquired Loans
Allowance for loan losses
Individually evaluated for impairment	308	570
Purchased credit-impaired loans	7,283	2,572
Collectively evaluated	290,568	330,956
Total loans	298,159	334,098
Consumer
Allowance for loan losses
Total loans	978,180	802,171
Consumer | Business Activities Loans
Allowance for loan losses
Individually evaluated for impairment	2,703	1,810
Collectively evaluated	789,186	616,677
Total loans	791,889	618,487
Consumer | Acquired Loans
Allowance for loan losses
Individually evaluated for impairment	406	487
Purchased credit-impaired loans	1,344	250
Collectively evaluated	184,541	182,947
Total loans	$ 186,291	$ 183,684

LOANS - Summary of Impaired Loa

LOANS - Summary of Impaired Loans (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Business Activities Loans
Impaired Financing Receivable, Recorded Investment [Abstract]
Total	$ 36,018	$ 22,947
Impaired Financing Receivable, Unpaid Principal Balance [Abstract]
Total	36,732	23,373
Financing Receivable, Allowance for Credit Loss, Additional Information [Abstract]
Related Allowance	714	426
Business Activities Loans | Commercial real estate
Impaired Financing Receivable, Recorded Investment [Abstract]
Total	25,390	11,411
Impaired Financing Receivable, Unpaid Principal Balance [Abstract]
Total	25,548	11,560
Financing Receivable, Allowance for Credit Loss, Additional Information [Abstract]
Related Allowance	158	149
Business Activities Loans | Commercial real estate | Construction
Impaired Financing Receivable, Recorded Investment [Abstract]
With no related allowance		2,000
Impaired Financing Receivable, Unpaid Principal Balance [Abstract]
With no related allowance		2,000
Business Activities Loans | Commercial real estate | Other
Impaired Financing Receivable, Recorded Investment [Abstract]
With no related allowance	18,905	4,613
With an allowance recorded	6,306	4,798
Impaired Financing Receivable, Unpaid Principal Balance [Abstract]
With no related allowance	18,905	4,613
With an allowance recorded	6,462	4,947
Financing Receivable, Allowance for Credit Loss, Additional Information [Abstract]
Related Allowance	156	149
Business Activities Loans | Commercial real estate | Single and multi-family
Impaired Financing Receivable, Recorded Investment [Abstract]
With an allowance recorded	179
Impaired Financing Receivable, Unpaid Principal Balance [Abstract]
With an allowance recorded	181
Financing Receivable, Allowance for Credit Loss, Additional Information [Abstract]
Related Allowance	2
Business Activities Loans | Commercial and industrial
Impaired Financing Receivable, Recorded Investment [Abstract]
Total	5,442	7,169
Impaired Financing Receivable, Unpaid Principal Balance [Abstract]
Total	5,706	7,190
Financing Receivable, Allowance for Credit Loss, Additional Information [Abstract]
Related Allowance	264	21
Business Activities Loans | Commercial and industrial | Other
Impaired Financing Receivable, Recorded Investment [Abstract]
With no related allowance	382	5,828
With an allowance recorded	5,060	1,341
Impaired Financing Receivable, Unpaid Principal Balance [Abstract]
With no related allowance	382	5,828
With an allowance recorded	5,324	1,362
Financing Receivable, Allowance for Credit Loss, Additional Information [Abstract]
Related Allowance	264	21
Business Activities Loans | Residential
Impaired Financing Receivable, Recorded Investment [Abstract]
Total	2,639	2,660
Impaired Financing Receivable, Unpaid Principal Balance [Abstract]
Total	2,775	2,813
Financing Receivable, Allowance for Credit Loss, Additional Information [Abstract]
Related Allowance	136	153
Business Activities Loans | Residential | 1-4 family
Impaired Financing Receivable, Recorded Investment [Abstract]
With no related allowance	2,101	1,181
With an allowance recorded	538	1,479
Impaired Financing Receivable, Unpaid Principal Balance [Abstract]
With no related allowance	2,101	1,181
With an allowance recorded	674	1,632
Financing Receivable, Allowance for Credit Loss, Additional Information [Abstract]
Related Allowance	136	153
Business Activities Loans | Consumer
Impaired Financing Receivable, Recorded Investment [Abstract]
Total	2,547	1,707
Impaired Financing Receivable, Unpaid Principal Balance [Abstract]
Total	2,703	1,810
Financing Receivable, Allowance for Credit Loss, Additional Information [Abstract]
Related Allowance	156	103
Business Activities Loans | Consumer | Other
Impaired Financing Receivable, Recorded Investment [Abstract]
With no related allowance		1
With an allowance recorded		101
Impaired Financing Receivable, Unpaid Principal Balance [Abstract]
With no related allowance		1
With an allowance recorded		108
Financing Receivable, Allowance for Credit Loss, Additional Information [Abstract]
Related Allowance		7
Business Activities Loans | Consumer | Home equity
Impaired Financing Receivable, Recorded Investment [Abstract]
With no related allowance	1,605	702
With an allowance recorded	942	903
Impaired Financing Receivable, Unpaid Principal Balance [Abstract]
With no related allowance	1,605	702
With an allowance recorded	1,098	999
Financing Receivable, Allowance for Credit Loss, Additional Information [Abstract]
Related Allowance	156	96
Acquired Loans
Impaired Financing Receivable, Recorded Investment [Abstract]
Total	5,171	5,325
Impaired Financing Receivable, Unpaid Principal Balance [Abstract]
Total	5,605	5,465
Financing Receivable, Allowance for Credit Loss, Additional Information [Abstract]
Related Allowance	434	140
Acquired Loans | Commercial real estate
Impaired Financing Receivable, Recorded Investment [Abstract]
Total	4,006	4,324
Impaired Financing Receivable, Unpaid Principal Balance [Abstract]
Total	4,256	4,409
Financing Receivable, Allowance for Credit Loss, Additional Information [Abstract]
Related Allowance	250	85
Acquired Loans | Commercial real estate | Other
Impaired Financing Receivable, Recorded Investment [Abstract]
With no related allowance	547	1,722
With an allowance recorded	2,209	1,964
Impaired Financing Receivable, Unpaid Principal Balance [Abstract]
With no related allowance	547	1,722
With an allowance recorded	2,351	2,032
Financing Receivable, Allowance for Credit Loss, Additional Information [Abstract]
Related Allowance	142	68
Acquired Loans | Commercial real estate | Single and multi-family
Impaired Financing Receivable, Recorded Investment [Abstract]
With an allowance recorded	1,250	638
Impaired Financing Receivable, Unpaid Principal Balance [Abstract]
With an allowance recorded	1,358	655
Financing Receivable, Allowance for Credit Loss, Additional Information [Abstract]
Related Allowance	108	17
Acquired Loans | Commercial and industrial
Impaired Financing Receivable, Recorded Investment [Abstract]
Total	576	0
Impaired Financing Receivable, Unpaid Principal Balance [Abstract]
Total	635	0
Financing Receivable, Allowance for Credit Loss, Additional Information [Abstract]
Related Allowance	59	0
Acquired Loans | Commercial and industrial | Other
Impaired Financing Receivable, Recorded Investment [Abstract]
With an allowance recorded		576
Impaired Financing Receivable, Unpaid Principal Balance [Abstract]
With an allowance recorded		635
Financing Receivable, Allowance for Credit Loss, Additional Information [Abstract]
Related Allowance		59
Acquired Loans | Residential
Impaired Financing Receivable, Recorded Investment [Abstract]
Total	297	540
Impaired Financing Receivable, Unpaid Principal Balance [Abstract]
Total	308	570
Financing Receivable, Allowance for Credit Loss, Additional Information [Abstract]
Related Allowance	11	30
Acquired Loans | Residential | 1-4 family
Impaired Financing Receivable, Recorded Investment [Abstract]
With no related allowance	208	274
With an allowance recorded	89	266
Impaired Financing Receivable, Unpaid Principal Balance [Abstract]
With no related allowance	208	274
With an allowance recorded	100	296
Financing Receivable, Allowance for Credit Loss, Additional Information [Abstract]
Related Allowance	11	30
Acquired Loans | Consumer
Impaired Financing Receivable, Recorded Investment [Abstract]
Total	292	461
Impaired Financing Receivable, Unpaid Principal Balance [Abstract]
Total	406	486
Financing Receivable, Allowance for Credit Loss, Additional Information [Abstract]
Related Allowance	114	25
Acquired Loans | Consumer | Other
Impaired Financing Receivable, Recorded Investment [Abstract]
With no related allowance	0	177
Impaired Financing Receivable, Unpaid Principal Balance [Abstract]
With no related allowance	0	177
Acquired Loans | Consumer | Home equity
Impaired Financing Receivable, Recorded Investment [Abstract]
With no related allowance	0	117
With an allowance recorded	292	167
Impaired Financing Receivable, Unpaid Principal Balance [Abstract]
With no related allowance	0	117
With an allowance recorded	406	192
Financing Receivable, Allowance for Credit Loss, Additional Information [Abstract]
Related Allowance	$ 114	$ 25

LOANS - Summary of Average Reco

LOANS - Summary of Average Recorded Investment and Interst Income Recognized (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Business Activities Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Average Recorded Investment	$ 24,242	$ 26,380
Cash Basis Interest Income Recognized	2,028	867
Business Activities Loans | Commercial real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Average Recorded Investment	14,090	18,006
Cash Basis Interest Income Recognized	1,511	526
Business Activities Loans | Commercial real estate | Construction
Accounts, Notes, Loans and Financing Receivable [Line Items]
Average recorded investment, with no related allowance	0	2,245
Cash basis interest income recognized, with no related allowance	0	92
Business Activities Loans | Commercial real estate | Single and multi-family
Accounts, Notes, Loans and Financing Receivable [Line Items]
Average recorded investment, with no related allowance	36	60
Cash basis interest income recognized, with no related allowance	1	0
Average recorded investment with related allowance	15	0
Cash basis interest income recognized, with related allowance	6	0
Business Activities Loans | Commercial real estate | Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Average recorded investment, with no related allowance	6,463	12,487
Cash basis interest income recognized, with no related allowance	1,155	302
Average recorded investment with related allowance	7,576	3,214
Cash basis interest income recognized, with related allowance	349	132
Business Activities Loans | Commercial and industrial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Average Recorded Investment	5,351	4,680
Cash Basis Interest Income Recognized	356	214
Business Activities Loans | Commercial and industrial | Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Average recorded investment, with no related allowance	3,349	3,870
Cash basis interest income recognized, with no related allowance	131	177
Average recorded investment with related allowance	2,002	810
Cash basis interest income recognized, with related allowance	225	37
Business Activities Loans | Residential
Accounts, Notes, Loans and Financing Receivable [Line Items]
Average Recorded Investment	3,085	3,057
Cash Basis Interest Income Recognized	117	110
Business Activities Loans | Residential | 1-4 family
Accounts, Notes, Loans and Financing Receivable [Line Items]
Average recorded investment, with no related allowance	2,403	1,353
Cash basis interest income recognized, with no related allowance	91	38
Average recorded investment with related allowance	682	1,704
Cash basis interest income recognized, with related allowance	26	72
Business Activities Loans | Consumer
Accounts, Notes, Loans and Financing Receivable [Line Items]
Average Recorded Investment	1,716	637
Cash Basis Interest Income Recognized	44	17
Business Activities Loans | Consumer | Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Average recorded investment, with no related allowance	2	0
Cash basis interest income recognized, with no related allowance	0	0
Average recorded investment with related allowance	103	112
Cash basis interest income recognized, with related allowance	4	4
Business Activities Loans | Consumer | Home equity
Accounts, Notes, Loans and Financing Receivable [Line Items]
Average recorded investment, with no related allowance	612	442
Cash basis interest income recognized, with no related allowance	5	13
Average recorded investment with related allowance	999	83
Cash basis interest income recognized, with related allowance	35	0
Acquired Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Average Recorded Investment	5,676	7,391
Cash Basis Interest Income Recognized	364	318
Acquired Loans | Commercial real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Average Recorded Investment	4,203	6,187
Cash Basis Interest Income Recognized	300	283
Acquired Loans | Commercial real estate | Construction
Accounts, Notes, Loans and Financing Receivable [Line Items]
Average recorded investment, with no related allowance	0	445
Cash basis interest income recognized, with no related allowance	0	60
Average recorded investment with related allowance	0	0
Cash basis interest income recognized, with related allowance	0	0
Acquired Loans | Commercial real estate | Single and multi-family
Accounts, Notes, Loans and Financing Receivable [Line Items]
Average recorded investment, with no related allowance	0	2,014
Cash basis interest income recognized, with no related allowance	0	57
Average recorded investment with related allowance	1,064	623
Cash basis interest income recognized, with related allowance	115	33
Acquired Loans | Commercial real estate | Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Average recorded investment, with no related allowance	521	1,721
Cash basis interest income recognized, with no related allowance	20	37
Average recorded investment with related allowance	2,618	1,384
Cash basis interest income recognized, with related allowance	165	96
Acquired Loans | Commercial real estate | Commercial business loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Average recorded investment, with no related allowance	492	0
Cash basis interest income recognized, with no related allowance	9	0
Acquired Loans | Commercial and industrial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Average Recorded Investment	861	31
Cash Basis Interest Income Recognized	26	3
Acquired Loans | Commercial and industrial | Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Average recorded investment with related allowance	369	31
Cash basis interest income recognized, with related allowance	17	3
Acquired Loans | Residential
Accounts, Notes, Loans and Financing Receivable [Line Items]
Average Recorded Investment	507	767
Cash Basis Interest Income Recognized	37	15
Acquired Loans | Residential | 1-4 family
Accounts, Notes, Loans and Financing Receivable [Line Items]
Average recorded investment, with no related allowance	293	463
Cash basis interest income recognized, with no related allowance	12	6
Average recorded investment with related allowance	214	304
Cash basis interest income recognized, with related allowance	25	9
Acquired Loans | Consumer
Accounts, Notes, Loans and Financing Receivable [Line Items]
Average Recorded Investment	105	406
Cash Basis Interest Income Recognized	1	17
Acquired Loans | Consumer | Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Average recorded investment, with no related allowance	105	59
Cash basis interest income recognized, with no related allowance	1	5
Acquired Loans | Consumer | Home equity
Accounts, Notes, Loans and Financing Receivable [Line Items]
Average recorded investment, with no related allowance	0	152
Cash basis interest income recognized, with no related allowance	0	5
Average recorded investment with related allowance	0	195
Cash basis interest income recognized, with related allowance	$ 0	$ 7

LOANS - Modifications by Class

LOANS - Modifications by Class (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2016USD ($)modification	Dec. 31, 2015USD ($)modification	Dec. 31, 2014USD ($)modification
Accounts, Notes, Loans and Financing Receivable [Line Items]
Number of modifications (modification) | modification	17	14	17
Pre-Modification Outstanding Recorded Investment	$ 17,765	$ 19,047	$ 10,515
Post-Modification Outstanding Recorded Investment	$ 17,765	$ 17,607	$ 10,513
Commercial loans | Construction
Accounts, Notes, Loans and Financing Receivable [Line Items]
Number of modifications (modification) | modification		1
Pre-Modification Outstanding Recorded Investment		$ 123
Post-Modification Outstanding Recorded Investment		$ 123
Commercial loans | Single and multi-family
Accounts, Notes, Loans and Financing Receivable [Line Items]
Number of modifications (modification) | modification	5	2	1
Pre-Modification Outstanding Recorded Investment	$ 437	$ 307	$ 623
Post-Modification Outstanding Recorded Investment	$ 437	$ 307	$ 623
Commercial loans | Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Number of modifications (modification) | modification	5	4	10
Pre-Modification Outstanding Recorded Investment	$ 16,651	$ 8,577	$ 9,190
Post-Modification Outstanding Recorded Investment	$ 16,651	$ 7,274	$ 9,190
Commercial and industrial | Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Number of modifications (modification) | modification	4	6
Pre-Modification Outstanding Recorded Investment	$ 555	$ 9,041
Post-Modification Outstanding Recorded Investment	$ 555	$ 8,904
Residential | Construction
Accounts, Notes, Loans and Financing Receivable [Line Items]
Number of modifications (modification) | modification			1
Pre-Modification Outstanding Recorded Investment			$ 102
Post-Modification Outstanding Recorded Investment			$ 102
Residential | 1-4 family
Accounts, Notes, Loans and Financing Receivable [Line Items]
Number of modifications (modification) | modification	2		5
Pre-Modification Outstanding Recorded Investment	$ 5		$ 600
Post-Modification Outstanding Recorded Investment	$ 5		$ 598
Consumer | Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Number of modifications (modification) | modification		1
Pre-Modification Outstanding Recorded Investment		$ 999
Post-Modification Outstanding Recorded Investment		$ 999
Consumer | Home equity
Accounts, Notes, Loans and Financing Receivable [Line Items]
Number of modifications (modification) | modification	1
Pre-Modification Outstanding Recorded Investment	$ 117
Post-Modification Outstanding Recorded Investment	$ 117

LOANS - Modifications that Subs

LOANS - Modifications that Subsequently Defaulted (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2016contract	Dec. 31, 2015USD ($)contract	Dec. 31, 2014USD ($)contract
Accounts, Notes, Loans and Financing Receivable [Line Items]
Modifications that subsequently defaulted, number of contracts (contract) | contract	0	8	2
Modifications that subsequently defaulted, recorded investment | $		$ 7,121	$ 101
Commercial loans | Single and multi-family
Accounts, Notes, Loans and Financing Receivable [Line Items]
Modifications that subsequently defaulted, number of contracts (contract) | contract		1
Modifications that subsequently defaulted, recorded investment | $		$ 0
Commercial loans | Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Modifications that subsequently defaulted, number of contracts (contract) | contract		1
Modifications that subsequently defaulted, recorded investment | $		$ 373
Commercial and industrial | Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Modifications that subsequently defaulted, number of contracts (contract) | contract		4	2
Modifications that subsequently defaulted, recorded investment | $		$ 6,579	$ 101
Residential | 1-4 family
Accounts, Notes, Loans and Financing Receivable [Line Items]
Modifications that subsequently defaulted, number of contracts (contract) | contract		2
Modifications that subsequently defaulted, recorded investment | $		$ 169

LOANS - Summary of TDR Activity

LOANS - Summary of TDR Activity (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Trouble Debt Restructuring on Financing Receivables [Roll Forward]
Balance at beginning of year	$ 22,048	$ 16,714
Principal payments	(5,870)	(5,460)
TDR status change	2,235	0
Other reductions	(2,348)	(3,160)
Newly identified TDRs	17,764	13,954
Balance at end of year	$ 33,829	$ 22,048

LOAN LOSS ALLOWANCE (Details)

LOAN LOSS ALLOWANCE (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Activity in the allowance for loan losses
Balance at beginning of year				$ 39,308					$ 39,308
Provision for loan losses	$ 4,100	$ 4,734	$ 4,522	4,006	$ 4,431	$ 4,240	$ 4,204	$ 3,851	17,362	$ 16,726	$ 14,968
Balance at end of year	43,998				39,308				43,998	39,308
Financing Receivable, Allowance for Credit Loss, Additional Information [Abstract]
Total	43,998			39,308	39,308				39,308	39,308		$ 43,998	$ 39,308
Business Activities Loans
Activity in the allowance for loan losses
Balance at beginning of year				34,574				32,795	34,574	32,795	29,527
Charged-off loans									10,505	11,621	9,470
Recoveries on charged-off loans									792	759	673
Provision for loan losses									14,368	12,641	12,065
Balance at end of year	39,229				34,574				39,229	34,574	32,795
Financing Receivable, Allowance for Credit Loss, Additional Information [Abstract]
Individually evaluated for impairment												714	426	$ 1,143
Collectively evaluated												38,515	34,148	31,652
Total	39,229			34,574	34,574			32,795	34,574	32,795	29,527	39,229	34,574	32,795
Acquired Loans
Activity in the allowance for loan losses
Balance at beginning of year				4,734				2,867	4,734	2,867	3,796
Charged-off loans									3,521	3,067	4,383
Recoveries on charged-off loans									562	849	551
Provision for loan losses									2,994	4,085	2,903
Balance at end of year	4,769				4,734				4,769	4,734	2,867
Financing Receivable, Allowance for Credit Loss, Additional Information [Abstract]
Individually evaluated for impairment												432	98	171
Purchased credit-impaired loans												0	42	0
Collectively evaluated												4,337	4,594	2,696
Total	4,769			4,734	4,734			2,867	4,734	2,867	3,796	4,769	4,734	2,867
Commercial real estate | Business Activities Loans
Activity in the allowance for loan losses
Balance at beginning of year				14,508				14,690	14,508	14,690	13,705
Charged-off loans									2,127	6,865	4,207
Recoveries on charged-off loans									243	164	9
Provision for loan losses									3,781	6,519	5,183
Balance at end of year	16,405				14,508				16,405	14,508	14,690
Financing Receivable, Allowance for Credit Loss, Additional Information [Abstract]
Individually evaluated for impairment												158	149	922
Collectively evaluated												16,247	14,359	13,768
Total	16,405			14,508	14,508			14,690	14,508	14,690	13,705	16,405	14,508	14,690
Commercial real estate | Acquired Loans
Activity in the allowance for loan losses
Balance at beginning of year				1,903				790	1,903	790	2,339
Charged-off loans									977	681	1,477
Recoveries on charged-off loans									61	418	261
Provision for loan losses									1,316	1,376	(333)
Balance at end of year	2,303				1,903				2,303	1,903	790
Financing Receivable, Allowance for Credit Loss, Additional Information [Abstract]
Individually evaluated for impairment												250	43	48
Purchased credit-impaired loans												0	42	0
Collectively evaluated												2,053	1,818	742
Total	2,303			1,903	1,903			790	1,903	790	2,339	2,303	1,903	790
Commercial and industrial | Business Activities Loans
Activity in the allowance for loan losses
Balance at beginning of year				7,317				5,206	7,317	5,206	5,173
Charged-off loans									4,620	2,358	2,500
Recoveries on charged-off loans									123	169	193
Provision for loan losses									6,551	4,300	2,340
Balance at end of year	9,371				7,317				9,371	7,317	5,206
Financing Receivable, Allowance for Credit Loss, Additional Information [Abstract]
Individually evaluated for impairment												264	21	0
Collectively evaluated												9,107	7,296	5,206
Total	9,371			7,317	7,317			5,206	7,317	5,206	5,173	9,371	7,317	5,206
Commercial and industrial | Acquired Loans
Activity in the allowance for loan losses
Balance at beginning of year				1,330				1,093	1,330	1,093	597
Charged-off loans									1,095	752	510
Recoveries on charged-off loans									266	289	35
Provision for loan losses									663	700	971
Balance at end of year	1,164				1,330				1,164	1,330	1,093
Financing Receivable, Allowance for Credit Loss, Additional Information [Abstract]
Individually evaluated for impairment												60	0	0
Purchased credit-impaired loans												0	0	0
Collectively evaluated												1,104	1,330	1,093
Total	1,164			1,330	1,330			1,093	1,330	1,093	597	1,164	1,330	1,093
Residential mortgages | Business Activities Loans
Activity in the allowance for loan losses
Balance at beginning of year				7,566				6,836	7,566	6,836	6,937
Charged-off loans									2,036	1,215	1,455
Recoveries on charged-off loans									159	141	186
Provision for loan losses									2,063	1,804	1,168
Balance at end of year	7,752				7,566				7,752	7,566	6,836
Financing Receivable, Allowance for Credit Loss, Additional Information [Abstract]
Individually evaluated for impairment												136	153	155
Collectively evaluated												7,616	7,413	6,681
Total	7,752			7,566	7,566			6,836	7,566	6,836	6,937	7,752	7,566	6,836
Residential mortgages | Acquired Loans
Activity in the allowance for loan losses
Balance at beginning of year				976				615	976	615	625
Charged-off loans									829	642	1,141
Recoveries on charged-off loans									144	64	179
Provision for loan losses									475	939	952
Balance at end of year	766				976				766	976	615
Financing Receivable, Allowance for Credit Loss, Additional Information [Abstract]
Individually evaluated for impairment												11	30	48
Purchased credit-impaired loans												0	0	0
Collectively evaluated												755	946	567
Total	766			976	976			615	976	615	625	766	976	615
Consumer | Business Activities Loans
Activity in the allowance for loan losses
Balance at beginning of year				4,956				5,928	4,956	5,928	3,644
Charged-off loans									1,722	1,183	1,308
Recoveries on charged-off loans									267	285	285
Provision for loan losses									1,946	(74)	3,307
Balance at end of year	5,447				4,956				5,447	4,956	5,928
Financing Receivable, Allowance for Credit Loss, Additional Information [Abstract]
Individually evaluated for impairment												156	103	66
Collectively evaluated												5,291	4,853	5,862
Total	5,447			4,956	4,956			5,928	4,956	5,928	3,644	5,447	4,956	5,928
Consumer | Acquired Loans
Activity in the allowance for loan losses
Balance at beginning of year				525				369	525	369	235
Charged-off loans									620	992	1,255
Recoveries on charged-off loans									91	78	76
Provision for loan losses									540	1,070	1,313
Balance at end of year	536				525				536	525	369
Financing Receivable, Allowance for Credit Loss, Additional Information [Abstract]
Individually evaluated for impairment												111	25	75
Purchased credit-impaired loans												0	0	0
Collectively evaluated												425	500	294
Total	536			525	525			369	525	369	235	536	525	369
Unallocated | Business Activities Loans
Activity in the allowance for loan losses
Balance at beginning of year				227				135	227	135	68
Charged-off loans									0	0	0
Recoveries on charged-off loans									0	0	0
Provision for loan losses									27	92	67
Balance at end of year	254				227				254	227	135
Financing Receivable, Allowance for Credit Loss, Additional Information [Abstract]
Individually evaluated for impairment												0	0	0
Collectively evaluated												254	227	135
Total	254			227	227			135	227	135	68	254	227	135
Unallocated | Acquired Loans
Activity in the allowance for loan losses
Balance at beginning of year				0				0	0	0	0
Charged-off loans									0	0	0
Recoveries on charged-off loans									0	0	0
Provision for loan losses									0	0	0
Balance at end of year	0				0				0	0	0
Financing Receivable, Allowance for Credit Loss, Additional Information [Abstract]
Individually evaluated for impairment												0	0	0
Purchased credit-impaired loans												0	0	0
Collectively evaluated												0	0	0
Total	$ 0			$ 0	$ 0			$ 0	$ 0	$ 0	$ 0	$ 0	$ 0	$ 0

LOAN LOSS ALLOWANCE - Narrative

LOAN LOSS ALLOWANCE - Narrative (Details) $ in Millions	12 Months Ended
	Dec. 31, 2016USD ($)grade
Business Activities Loans
Financing Receivable, Recorded Investment [Line Items]
Number of grades in internal loan rating system (grade)	3
Business Activities Loans | Residential | Mortgages | Pass
Financing Receivable, Recorded Investment [Line Items]
Period within which loans are current, based on which risk rating is assigned	59 days
Business Activities Loans | Residential | Mortgages | Special mention | Minimum
Financing Receivable, Recorded Investment [Line Items]
Delinquency period of loans based on which risk rating is assigned	60 days
Business Activities Loans | Residential | Mortgages | Special mention | Maximum
Financing Receivable, Recorded Investment [Line Items]
Delinquency period of loans based on which risk rating is assigned	89 days
Business Activities Loans | Residential | Mortgages | Substandard
Financing Receivable, Recorded Investment [Line Items]
Delinquency period of loans based on which risk rating is assigned	90 days
Other | Consumer
Financing Receivable, Recorded Investment [Line Items]
Number of grades in internal loan rating system (grade)	2
Other | Consumer | Performing
Financing Receivable, Recorded Investment [Line Items]
Period within which loans are current, based on which risk rating is assigned	119 days
Other | Consumer | Nonperforming
Financing Receivable, Recorded Investment [Line Items]
Delinquency period of loans based on which risk rating is assigned	120 days
Acquired Loans
Financing Receivable, Recorded Investment [Line Items]
Certain loans acquired in transfer not accounted for as debt securities, allowance for loan losses | $	$ 4.8

LOAN LOSS ALLOWANCE - Loans by

LOAN LOSS ALLOWANCE - Loans by Risk Rating (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Financing Receivable, Recorded Investment [Line Items]
Loans	$ 6,549,787	$ 5,725,236
Special mention
Financing Receivable, Recorded Investment [Line Items]
Loans	11,802	31,295
Substandard
Financing Receivable, Recorded Investment [Line Items]
Loans	95,302	93,109
Commercial real estate
Financing Receivable, Recorded Investment [Line Items]
Loans	2,616,438	2,059,767
Commercial real estate | Construction
Financing Receivable, Recorded Investment [Line Items]
Loans	287,509	253,670
Commercial real estate | Single and multi-family
Financing Receivable, Recorded Investment [Line Items]
Loans	317,491	251,606
Commercial real estate | Other
Financing Receivable, Recorded Investment [Line Items]
Loans	2,011,438	1,554,491
Commercial and industrial
Financing Receivable, Recorded Investment [Line Items]
Loans	1,062,038	1,048,263
Commercial and industrial | Asset based lending
Financing Receivable, Recorded Investment [Line Items]
Loans	321,270	331,253
Commercial and industrial | Other
Financing Receivable, Recorded Investment [Line Items]
Loans	740,768	717,010
Residential mortgages
Financing Receivable, Recorded Investment [Line Items]
Loans	1,893,131	1,815,035
Residential mortgages | Construction
Financing Receivable, Recorded Investment [Line Items]
Loans	11,982	28,055
Residential mortgages | 1-4 family
Financing Receivable, Recorded Investment [Line Items]
Loans	1,881,149	1,786,980
Consumer loans
Financing Receivable, Recorded Investment [Line Items]
Loans	978,180	802,171
Consumer loans | Home equity
Financing Receivable, Recorded Investment [Line Items]
Loans	393,800	360,605
Consumer loans | Auto and other
Financing Receivable, Recorded Investment [Line Items]
Loans	584,380	441,566
Business Activities Loans
Financing Receivable, Recorded Investment [Line Items]
Loans	5,221,307	4,560,683
Business Activities Loans | Special mention
Financing Receivable, Recorded Investment [Line Items]
Loans	7,479	29,036
Business Activities Loans | Substandard
Financing Receivable, Recorded Investment [Line Items]
Loans	51,125	60,549
Business Activities Loans | Commercial real estate
Financing Receivable, Recorded Investment [Line Items]
Loans	1,926,344	1,634,027
Business Activities Loans | Commercial real estate | Construction
Financing Receivable, Recorded Investment [Line Items]
Loans	253,302	210,196
Business Activities Loans | Commercial real estate | Single and multi-family
Financing Receivable, Recorded Investment [Line Items]
Loans	191,819	214,823
Business Activities Loans | Commercial real estate | Real Estate
Financing Receivable, Recorded Investment [Line Items]
Loans	1,481,223	1,209,008
Business Activities Loans | Commercial real estate | Other
Financing Receivable, Recorded Investment [Line Items]
Loans	1,481,223	1,209,008
Business Activities Loans | Commercial real estate | Pass
Financing Receivable, Recorded Investment [Line Items]
Loans	1,877,374	1,576,808
Business Activities Loans | Commercial real estate | Pass | Construction
Financing Receivable, Recorded Investment [Line Items]
Loans	253,302	208,138
Business Activities Loans | Commercial real estate | Pass | Single and multi-family
Financing Receivable, Recorded Investment [Line Items]
Loans	189,310	212,900
Business Activities Loans | Commercial real estate | Pass | Real Estate
Financing Receivable, Recorded Investment [Line Items]
Loans	1,434,762	1,155,770
Business Activities Loans | Commercial real estate | Special mention
Financing Receivable, Recorded Investment [Line Items]
Loans	6,161	3,449
Business Activities Loans | Commercial real estate | Special mention | Construction
Financing Receivable, Recorded Investment [Line Items]
Loans	0	0
Business Activities Loans | Commercial real estate | Special mention | Single and multi-family
Financing Receivable, Recorded Investment [Line Items]
Loans	334	0
Business Activities Loans | Commercial real estate | Special mention | Real Estate
Financing Receivable, Recorded Investment [Line Items]
Loans	5,827	3,449
Business Activities Loans | Commercial real estate | Substandard
Financing Receivable, Recorded Investment [Line Items]
Loans	42,773	53,697
Business Activities Loans | Commercial real estate | Substandard | Construction
Financing Receivable, Recorded Investment [Line Items]
Loans	0	2,058
Business Activities Loans | Commercial real estate | Substandard | Single and multi-family
Financing Receivable, Recorded Investment [Line Items]
Loans	2,175	1,923
Business Activities Loans | Commercial real estate | Substandard | Real Estate
Financing Receivable, Recorded Investment [Line Items]
Loans	40,598	49,716
Business Activities Loans | Commercial real estate | Doubtful
Financing Receivable, Recorded Investment [Line Items]
Loans	36	73
Business Activities Loans | Commercial real estate | Doubtful | Construction
Financing Receivable, Recorded Investment [Line Items]
Loans	0	0
Business Activities Loans | Commercial real estate | Doubtful | Single and multi-family
Financing Receivable, Recorded Investment [Line Items]
Loans	0	0
Business Activities Loans | Commercial real estate | Doubtful | Real Estate
Financing Receivable, Recorded Investment [Line Items]
Loans	36	73
Business Activities Loans | Commercial and industrial
Financing Receivable, Recorded Investment [Line Items]
Loans	908,102	827,232
Business Activities Loans | Commercial and industrial | Asset based lending
Financing Receivable, Recorded Investment [Line Items]
Loans	321,270	331,253
Business Activities Loans | Commercial and industrial | Other
Financing Receivable, Recorded Investment [Line Items]
Loans	586,832	495,979
Business Activities Loans | Commercial and industrial | Business loans
Financing Receivable, Recorded Investment [Line Items]
Loans	908,102	827,232
Business Activities Loans | Commercial and industrial | Business loans | Asset based lending
Financing Receivable, Recorded Investment [Line Items]
Loans	321,270	331,253
Business Activities Loans | Commercial and industrial | Business loans | Other
Financing Receivable, Recorded Investment [Line Items]
Loans	586,832	495,979
Business Activities Loans | Commercial and industrial | Business loans | Pass
Financing Receivable, Recorded Investment [Line Items]
Loans	890,974	786,963
Business Activities Loans | Commercial and industrial | Business loans | Pass | Asset based lending
Financing Receivable, Recorded Investment [Line Items]
Loans	321,270	331,253
Business Activities Loans | Commercial and industrial | Business loans | Pass | Other
Financing Receivable, Recorded Investment [Line Items]
Loans	569,704	455,710
Business Activities Loans | Commercial and industrial | Business loans | Special mention
Financing Receivable, Recorded Investment [Line Items]
Loans	123	24,578
Business Activities Loans | Commercial and industrial | Business loans | Special mention | Asset based lending
Financing Receivable, Recorded Investment [Line Items]
Loans	0	0
Business Activities Loans | Commercial and industrial | Business loans | Special mention | Other
Financing Receivable, Recorded Investment [Line Items]
Loans	123	24,578
Business Activities Loans | Commercial and industrial | Business loans | Substandard
Financing Receivable, Recorded Investment [Line Items]
Loans	13,825	15,691
Business Activities Loans | Commercial and industrial | Business loans | Substandard | Asset based lending
Financing Receivable, Recorded Investment [Line Items]
Loans	0	0
Business Activities Loans | Commercial and industrial | Business loans | Substandard | Other
Financing Receivable, Recorded Investment [Line Items]
Loans	13,825	15,691
Business Activities Loans | Commercial and industrial | Business loans | Doubtful
Financing Receivable, Recorded Investment [Line Items]
Loans	3,180	0
Business Activities Loans | Commercial and industrial | Business loans | Doubtful | Asset based lending
Financing Receivable, Recorded Investment [Line Items]
Loans	0	0
Business Activities Loans | Commercial and industrial | Business loans | Doubtful | Other
Financing Receivable, Recorded Investment [Line Items]
Loans	3,180	0
Business Activities Loans | Residential mortgages
Financing Receivable, Recorded Investment [Line Items]
Loans	1,594,972	1,480,937
Business Activities Loans | Residential mortgages | Construction
Financing Receivable, Recorded Investment [Line Items]
Loans	11,178	26,704
Business Activities Loans | Residential mortgages | 1-4 family
Financing Receivable, Recorded Investment [Line Items]
Loans	1,583,794	1,454,233
Business Activities Loans | Residential mortgages | Mortgages
Financing Receivable, Recorded Investment [Line Items]
Loans	1,594,971	1,480,937
Business Activities Loans | Residential mortgages | Mortgages | Construction
Financing Receivable, Recorded Investment [Line Items]
Loans	11,178	26,704
Business Activities Loans | Residential mortgages | Mortgages | 1-4 family
Financing Receivable, Recorded Investment [Line Items]
Loans	1,583,793	1,454,233
Business Activities Loans | Residential mortgages | Mortgages | Pass
Financing Receivable, Recorded Investment [Line Items]
Loans	1,590,091	1,475,777
Business Activities Loans | Residential mortgages | Mortgages | Pass | Construction
Financing Receivable, Recorded Investment [Line Items]
Loans	11,178	26,704
Business Activities Loans | Residential mortgages | Mortgages | Pass | 1-4 family
Financing Receivable, Recorded Investment [Line Items]
Loans	1,578,913	1,449,073
Business Activities Loans | Residential mortgages | Mortgages | Special mention
Financing Receivable, Recorded Investment [Line Items]
Loans	701	857
Business Activities Loans | Residential mortgages | Mortgages | Special mention | Construction
Financing Receivable, Recorded Investment [Line Items]
Loans	0	0
Business Activities Loans | Residential mortgages | Mortgages | Special mention | 1-4 family
Financing Receivable, Recorded Investment [Line Items]
Loans	701	857
Business Activities Loans | Residential mortgages | Mortgages | Substandard
Financing Receivable, Recorded Investment [Line Items]
Loans	4,179	4,303
Business Activities Loans | Residential mortgages | Mortgages | Substandard | Construction
Financing Receivable, Recorded Investment [Line Items]
Loans	0	0
Business Activities Loans | Residential mortgages | Mortgages | Substandard | 1-4 family
Financing Receivable, Recorded Investment [Line Items]
Loans	4,179	4,303
Business Activities Loans | Consumer loans
Financing Receivable, Recorded Investment [Line Items]
Loans	791,889	618,487
Business Activities Loans | Consumer loans | Home equity
Financing Receivable, Recorded Investment [Line Items]
Loans	313,521	307,159
Business Activities Loans | Consumer loans | Auto and other
Financing Receivable, Recorded Investment [Line Items]
Loans	478,368	311,328
Business Activities Loans | Consumer loans | Performing
Financing Receivable, Recorded Investment [Line Items]
Loans	788,262	616,339
Business Activities Loans | Consumer loans | Performing | Home equity
Financing Receivable, Recorded Investment [Line Items]
Loans	310,846	305,562
Business Activities Loans | Consumer loans | Performing | Auto and other
Financing Receivable, Recorded Investment [Line Items]
Loans	477,416	310,777
Business Activities Loans | Consumer loans | Nonperforming
Financing Receivable, Recorded Investment [Line Items]
Loans	3,627	2,148
Business Activities Loans | Consumer loans | Nonperforming | Home equity
Financing Receivable, Recorded Investment [Line Items]
Loans	2,675	1,597
Business Activities Loans | Consumer loans | Nonperforming | Auto and other
Financing Receivable, Recorded Investment [Line Items]
Loans	952	551
Acquired Loans
Financing Receivable, Recorded Investment [Line Items]
Loans	1,328,480	1,164,553
Acquired Loans | Special mention
Financing Receivable, Recorded Investment [Line Items]
Loans	4,323	2,259
Acquired Loans | Substandard
Financing Receivable, Recorded Investment [Line Items]
Loans	44,177	32,560
Acquired Loans | Commercial real estate
Financing Receivable, Recorded Investment [Line Items]
Loans	690,094	425,740
Acquired Loans | Commercial real estate | Construction
Financing Receivable, Recorded Investment [Line Items]
Loans	34,207	43,474
Acquired Loans | Commercial real estate | Single and multi-family
Financing Receivable, Recorded Investment [Line Items]
Loans	125,672	36,783
Acquired Loans | Commercial real estate | Real Estate
Financing Receivable, Recorded Investment [Line Items]
Loans	530,215	345,483
Acquired Loans | Commercial real estate | Other
Financing Receivable, Recorded Investment [Line Items]
Loans	530,215	345,483
Acquired Loans | Commercial real estate | Pass
Financing Receivable, Recorded Investment [Line Items]
Loans	649,437	399,586
Acquired Loans | Commercial real estate | Pass | Construction
Financing Receivable, Recorded Investment [Line Items]
Loans	33,461	42,176
Acquired Loans | Commercial real estate | Pass | Single and multi-family
Financing Receivable, Recorded Investment [Line Items]
Loans	119,414	32,796
Acquired Loans | Commercial real estate | Pass | Real Estate
Financing Receivable, Recorded Investment [Line Items]
Loans	496,562	324,614
Acquired Loans | Commercial real estate | Special mention
Financing Receivable, Recorded Investment [Line Items]
Loans	2,529	1,007
Acquired Loans | Commercial real estate | Special mention | Construction
Financing Receivable, Recorded Investment [Line Items]
Loans	0	0
Acquired Loans | Commercial real estate | Special mention | Single and multi-family
Financing Receivable, Recorded Investment [Line Items]
Loans	907	655
Acquired Loans | Commercial real estate | Special mention | Real Estate
Financing Receivable, Recorded Investment [Line Items]
Loans	1,622	352
Acquired Loans | Commercial real estate | Substandard
Financing Receivable, Recorded Investment [Line Items]
Loans	38,128	25,147
Acquired Loans | Commercial real estate | Substandard | Construction
Financing Receivable, Recorded Investment [Line Items]
Loans	746	1,298
Acquired Loans | Commercial real estate | Substandard | Single and multi-family
Financing Receivable, Recorded Investment [Line Items]
Loans	5,351	3,332
Acquired Loans | Commercial real estate | Substandard | Real Estate
Financing Receivable, Recorded Investment [Line Items]
Loans	32,031	20,517
Acquired Loans | Commercial and industrial
Financing Receivable, Recorded Investment [Line Items]
Loans	153,936	221,031
Acquired Loans | Commercial and industrial | Asset based lending
Financing Receivable, Recorded Investment [Line Items]
Loans	0	0
Acquired Loans | Commercial and industrial | Other
Financing Receivable, Recorded Investment [Line Items]
Loans	153,936	221,031
Acquired Loans | Commercial and industrial | Business loans
Financing Receivable, Recorded Investment [Line Items]
Loans	153,936	221,031
Acquired Loans | Commercial and industrial | Business loans | Asset based lending
Financing Receivable, Recorded Investment [Line Items]
Loans	0	0
Acquired Loans | Commercial and industrial | Business loans | Other
Financing Receivable, Recorded Investment [Line Items]
Loans	153,936	221,031
Acquired Loans | Commercial and industrial | Business loans | Pass
Financing Receivable, Recorded Investment [Line Items]
Loans	147,102	212,825
Acquired Loans | Commercial and industrial | Business loans | Pass | Asset based lending
Financing Receivable, Recorded Investment [Line Items]
Loans	0	0
Acquired Loans | Commercial and industrial | Business loans | Pass | Other
Financing Receivable, Recorded Investment [Line Items]
Loans	147,102	212,825
Acquired Loans | Commercial and industrial | Business loans | Special mention
Financing Receivable, Recorded Investment [Line Items]
Loans	1,260	487
Acquired Loans | Commercial and industrial | Business loans | Special mention | Asset based lending
Financing Receivable, Recorded Investment [Line Items]
Loans	0	0
Acquired Loans | Commercial and industrial | Business loans | Special mention | Other
Financing Receivable, Recorded Investment [Line Items]
Loans	1,260	487
Acquired Loans | Commercial and industrial | Business loans | Substandard
Financing Receivable, Recorded Investment [Line Items]
Loans	5,574	7,719
Acquired Loans | Commercial and industrial | Business loans | Substandard | Asset based lending
Financing Receivable, Recorded Investment [Line Items]
Loans	0	0
Acquired Loans | Commercial and industrial | Business loans | Substandard | Other
Financing Receivable, Recorded Investment [Line Items]
Loans	5,574	7,719
Acquired Loans | Residential mortgages
Financing Receivable, Recorded Investment [Line Items]
Loans	298,159	334,098
Acquired Loans | Residential mortgages | Construction
Financing Receivable, Recorded Investment [Line Items]
Loans	804	1,351
Acquired Loans | Residential mortgages | 1-4 family
Financing Receivable, Recorded Investment [Line Items]
Loans	297,355	332,747
Acquired Loans | Residential mortgages | Mortgages
Financing Receivable, Recorded Investment [Line Items]
Loans	298,159	334,098
Acquired Loans | Residential mortgages | Mortgages | Construction
Financing Receivable, Recorded Investment [Line Items]
Loans	804	1,351
Acquired Loans | Residential mortgages | Mortgages | 1-4 family
Financing Receivable, Recorded Investment [Line Items]
Loans	297,355	332,747
Acquired Loans | Residential mortgages | Mortgages | Pass
Financing Receivable, Recorded Investment [Line Items]
Loans	295,787	330,726
Acquired Loans | Residential mortgages | Mortgages | Pass | Construction
Financing Receivable, Recorded Investment [Line Items]
Loans	804	1,351
Acquired Loans | Residential mortgages | Mortgages | Pass | 1-4 family
Financing Receivable, Recorded Investment [Line Items]
Loans	294,983	329,375
Acquired Loans | Residential mortgages | Mortgages | Special mention
Financing Receivable, Recorded Investment [Line Items]
Loans	343	311
Acquired Loans | Residential mortgages | Mortgages | Special mention | Construction
Financing Receivable, Recorded Investment [Line Items]
Loans	0	0
Acquired Loans | Residential mortgages | Mortgages | Special mention | 1-4 family
Financing Receivable, Recorded Investment [Line Items]
Loans	343	311
Acquired Loans | Residential mortgages | Mortgages | Substandard
Financing Receivable, Recorded Investment [Line Items]
Loans	2,029	3,061
Acquired Loans | Residential mortgages | Mortgages | Substandard | Construction
Financing Receivable, Recorded Investment [Line Items]
Loans	0	0
Acquired Loans | Residential mortgages | Mortgages | Substandard | 1-4 family
Financing Receivable, Recorded Investment [Line Items]
Loans	2,029	3,061
Acquired Loans | Consumer loans
Financing Receivable, Recorded Investment [Line Items]
Loans	186,291	183,684
Acquired Loans | Consumer loans | Home equity
Financing Receivable, Recorded Investment [Line Items]
Loans	80,279	53,446
Acquired Loans | Consumer loans | Auto and other
Financing Receivable, Recorded Investment [Line Items]
Loans	106,012	130,238
Acquired Loans | Consumer loans | Performing
Financing Receivable, Recorded Investment [Line Items]
Loans	184,879	182,064
Acquired Loans | Consumer loans | Performing | Home equity
Financing Receivable, Recorded Investment [Line Items]
Loans	79,762	52,719
Acquired Loans | Consumer loans | Performing | Auto and other
Financing Receivable, Recorded Investment [Line Items]
Loans	105,117	129,345
Acquired Loans | Consumer loans | Nonperforming
Financing Receivable, Recorded Investment [Line Items]
Loans	1,412	1,620
Acquired Loans | Consumer loans | Nonperforming | Home equity
Financing Receivable, Recorded Investment [Line Items]
Loans	517	727
Acquired Loans | Consumer loans | Nonperforming | Auto and other
Financing Receivable, Recorded Investment [Line Items]
Loans	$ 895	$ 893

LOAN LOSS ALLOWANCE- Summary of

LOAN LOSS ALLOWANCE- Summary of Loans Rated Special Mention or Lower (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Financing Receivable, Recorded Investment [Line Items]
Loans	$ 6,549,787	$ 5,725,236
Non-Accrual
Financing Receivable, Recorded Investment [Line Items]
Loans	22,240	20,875
Substandard
Financing Receivable, Recorded Investment [Line Items]
Loans	95,302	93,109
Total Classified
Financing Receivable, Recorded Investment [Line Items]
Loans	117,542	113,984
Special mention
Financing Receivable, Recorded Investment [Line Items]
Loans	11,802	31,295
Total Criticized
Financing Receivable, Recorded Investment [Line Items]
Loans	129,344	145,279
Business Activities Loans
Financing Receivable, Recorded Investment [Line Items]
Loans	5,221,307	4,560,683
Business Activities Loans | Non-Accrual
Financing Receivable, Recorded Investment [Line Items]
Loans	16,816	15,484
Business Activities Loans | Substandard
Financing Receivable, Recorded Investment [Line Items]
Loans	51,125	60,549
Business Activities Loans | Total Classified
Financing Receivable, Recorded Investment [Line Items]
Loans	67,941	76,033
Business Activities Loans | Special mention
Financing Receivable, Recorded Investment [Line Items]
Loans	7,479	29,036
Business Activities Loans | Total Criticized
Financing Receivable, Recorded Investment [Line Items]
Loans	75,420	105,069
Acquired Loans
Financing Receivable, Recorded Investment [Line Items]
Loans	1,328,480	1,164,553
Acquired Loans | Non-Accrual
Financing Receivable, Recorded Investment [Line Items]
Loans	5,424	5,391
Acquired Loans | Substandard
Financing Receivable, Recorded Investment [Line Items]
Loans	44,177	32,560
Acquired Loans | Total Classified
Financing Receivable, Recorded Investment [Line Items]
Loans	49,601	37,951
Acquired Loans | Special mention
Financing Receivable, Recorded Investment [Line Items]
Loans	4,323	2,259
Acquired Loans | Total Criticized
Financing Receivable, Recorded Investment [Line Items]
Loans	$ 53,924	$ 40,210

PREMISES AND EQUIPMENT (Details

PREMISES AND EQUIPMENT (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Premises and equipment
Premises and equipment, gross	$ 142,659	$ 128,587
Accumulated depreciation and amortization	(49,444)	(40,515)
Premises and equipment, net	93,215	88,072
Depreciation and amortization expense	8,393	8,594	$ 8,292
Land
Premises and equipment
Premises and equipment, gross	10,563	10,719
Buildings and improvements
Premises and equipment
Premises and equipment, gross	$ 85,319	81,058
Buildings and improvements | Minimum
Premises and equipment
Estimated Useful Life	5 years
Buildings and improvements | Maximum
Premises and equipment
Estimated Useful Life	39 years
Furniture and equipment
Premises and equipment
Premises and equipment, gross	$ 42,693	34,950
Furniture and equipment | Minimum
Premises and equipment
Estimated Useful Life	3 years
Furniture and equipment | Maximum
Premises and equipment
Estimated Useful Life	7 years
Construction in process
Premises and equipment
Premises and equipment, gross	$ 4,084	$ 1,860

GOODWILL AND OTHER INTANGIBLE89

GOODWILL AND OTHER INTANGIBLES - Narrative (Details)	12 Months Ended
	Dec. 31, 2016USD ($)acquisition	Dec. 31, 2015USD ($)acquisition	Dec. 31, 2014USD ($)	Dec. 31, 2011acquisition
Finite-Lived Intangible Assets [Line Items]
Number of significant acquisitions completed (acquisition) | acquisition	3	2		2
Goodwill, impairment	$ 0	$ 0
Amortization of intangible assets	2,927,000	3,563,000	$ 4,812,000
Finite-lived intangible assets, amortization expense, 2017	3,900,000
Finite-lived intangible assets, amortization expense, 2018	3,600,000
Finite-lived intangible assets, amortization expense, 2019	3,300,000
Finite-lived intangible assets, amortization expense, 2020	3,000,000
Finite-lived intangible assets, amortization expense, 2021	1,200,000
Finite-lived intangible assets, amortization expense, thereafter	4,500,000
Impairment of intangible assets, finite-lived	$ 0	$ 0	$ 0
Minimum
Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible asset, useful life	4 years
Maximum
Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible asset, useful life	15 years

GOODWILL AND OTHER INTANGIBLE90

GOODWILL AND OTHER INTANGIBLES (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Goodwill
Balance, beginning of the period	$ 323,943	$ 264,742
Goodwill, Ending Balance	403,106	323,943
44 Business Capital
Goodwill
Goodwill acquired	15,892	0
Ronald N. Lazzaro, PC
Goodwill
Goodwill acquired	5,492	0
First Choice Bank
Goodwill
Goodwill acquired	58,036	0
Hampden Bancorp Inc
Goodwill
Goodwill acquired	0	42,513
Firestone Financial
Goodwill
Goodwill acquired	0	17,503
Beacon Federal
Goodwill
Adjustments	$ (257)	$ (814)

GOODWILL AND OTHER INTANGIBLE91

GOODWILL AND OTHER INTANGIBLES - Components of Other Intangible Assets (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Finite-Lived Intangible Assets [Line Items]
Gross Intangible Assets	$ 59,947	$ 48,285
Accumulated Amortization	(40,502)	(37,621)
Net Intangible Assets	19,445	10,664
Non-maturity deposits (core deposit intangible)
Finite-Lived Intangible Assets [Line Items]
Gross Intangible Assets	44,523	36,833
Accumulated Amortization	(30,099)	(28,099)
Net Intangible Assets	14,424	8,734
Insurance contracts
Finite-Lived Intangible Assets [Line Items]
Gross Intangible Assets	7,558	7,558
Accumulated Amortization	(7,504)	(6,863)
Net Intangible Assets	54	695
All other intangible assets
Finite-Lived Intangible Assets [Line Items]
Gross Intangible Assets	7,866	3,894
Accumulated Amortization	(2,899)	(2,659)
Net Intangible Assets	$ 4,967	$ 1,235

OTHER ASSETS (Details)

OTHER ASSETS (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Operating Loss Carryforwards [Line Items]
Capitalized servicing rights	$ 11,524	$ 5,187	$ 3,757
Accrued interest receivable	26,113	20,940
Investment in tax credits	1,500	2,854
Accrued federal and state tax receivable	19,076	6,731
Derivative assets	21,617	17,507
Other	18,627	11,707
Total other assets	98,457	64,926
State and Local Jurisdiction | New York
Operating Loss Carryforwards [Line Items]
Accrued federal and state tax receivable	$ 5,900	$ 4,000

OTHER ASSETS - Narrative (Detai

OTHER ASSETS - Narrative (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Servicing Asset at Amortized Cost [Line Items]
Mortgage loans sold and serviced for others	$ 1,300	$ 807.6	$ 625.4
Servicing fees	$ 3.2	$ 1.7	$ 1.5
Weighted average discount rate (as a percent)	11.80%
Minimum
Servicing Asset at Amortized Cost [Line Items]
Pre-payment speed (as a percent)	7.35%
Maximum
Servicing Asset at Amortized Cost [Line Items]
Pre-payment speed (as a percent)	14.28%

OTHER ASSETS - Mortgage Servici

OTHER ASSETS - Mortgage Servicing Rights Activity (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Mortgage servicing rights activity
Balance at beginning of year	$ 5,187	$ 3,757
Additions	4,116	2,622
Amortization	(1,964)	(1,192)
Balance at end of year	11,524	5,187
44 Business Capital
Mortgage servicing rights activity
Additions	3,489	0
First Choice Bank
Mortgage servicing rights activity
Additions	696	$ 0
Servicing asset at fair value	$ 798

DEPOSITS (Details)

DEPOSITS (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Maturity date:
Within 1 year	$ 1,316,973	$ 1,264,948
Over 1 year to 2 years	582,764	446,918
Over 2 years to 3 years	142,160	100,728
Over 3 years to 4 years	150,388	46,146
Over 4 years to 5 years	137,845	123,885
Over 5 years	3,413	3,975
Total	2,333,543	1,986,600
Less than $100,000	656,055	545,819
$100,000 or more	$ 1,677,488	$ 1,440,781

DEPOSITS - Narrative (Details)

DEPOSITS - Narrative (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Related Party Transaction [Line Items]
Brokered deposits	$ 787,900	$ 784,100
Reciprocal deposits	113,400	101,500
Time deposits	2,333,543	$ 1,986,600
Affiliated Entity
Related Party Transaction [Line Items]
Time deposits	$ 17,200

BORROWED FUNDS (Details)

BORROWED FUNDS (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Borrowings and junior subordinated debentures
Short-term borrowings	$ 1,082,044	$ 1,071,200
Long-term borrowings	231,953	192,118
Total borrowings	$ 1,313,997	$ 1,263,318
Weighted average rate on short-term borrowings (percent)	0.72%	0.43%
Weighted average rate on long-term borrowings (percent)	3.35%	3.88%
Weighted average interest rate (percent)	1.19%	0.96%
Advances from the FHLBB
Borrowings and junior subordinated debentures
Short-term borrowings	$ 1,072,044	$ 1,071,200
Long-term borrowings	$ 142,792	$ 103,135
Weighted average rate on short-term borrowings (percent)	0.71%	0.43%
Weighted average rate on long-term borrowings (percent)	1.53%	1.89%
Other Borrowings
Borrowings and junior subordinated debentures
Short-term borrowings	$ 10,000	$ 0
Weighted average rate on short-term borrowings (percent)	2.42%	0.00%
Subordinated notes
Borrowings and junior subordinated debentures
Long-term borrowings	$ 73,697	$ 73,519
Weighted average rate on long-term borrowings (percent)	7.00%	7.00%
Junior subordinated notes
Borrowings and junior subordinated debentures
Long-term borrowings	$ 15,464	$ 15,464
Weighted average rate on long-term borrowings (percent)	2.77%	2.23%

BORROWED FUNDS - Narrative (Det

BORROWED FUNDS - Narrative (Details) - USD ($)	1 Months Ended	12 Months Ended
	Sep. 30, 2012	Dec. 31, 2016	Dec. 31, 2015
Borrowings and junior subordinated debentures
Line of credit		$ 3,000,000
Short-term borrowings		1,082,044,000	$ 1,071,200,000
Long-term borrowings		231,953,000	192,118,000
Variable-rate FHLB advances		0
Advances from the FHLBB
Borrowings and junior subordinated debentures
Outstanding balance, line of credit		0	0
Short-term borrowings		1,072,044,000	1,071,200,000
Long-term borrowings		142,792,000	103,135,000
Federal Reserve Bank Advances
Borrowings and junior subordinated debentures
Short-term borrowings		0	0
Federal Home Loan Bank Certificates And Obligations F H L B Callable Advances
Borrowings and junior subordinated debentures
Long-term borrowings		11,000,000	11,000,000
Federal Home Loan Bank Certificates And Obligations F H L B Amortizing Advances
Borrowings and junior subordinated debentures
Long-term borrowings		1,200,000	1,200,000
Subordinated notes
Borrowings and junior subordinated debentures
Long-term borrowings		73,697,000	73,519,000
Maturity period	15 years
Principal amount of debt issued	$ 75,000,000
Discount rate (percent)	1.15%
Fixed interest rate (percent)	6.875%
Maturity period with fixed interest rate	10 years
Subordinated notes | Three-month LIBOR rate
Borrowings and junior subordinated debentures
Interest rate margin (percent)	5.113%
Unamortized debt issuance costs		706,000	829,000
Junior subordinated notes
Borrowings and junior subordinated debentures
Long-term borrowings		$ 15,464,000	$ 15,464,000
Junior subordinated notes | Trust I
Borrowings and junior subordinated debentures
Common stock of trust (percent)		100.00%
Common stock of trust included in other asset		$ 500,000
Sole asset of trust in form of debt		$ 15,500,000
Variable interest rate (percent)		2.77%	2.23%
Period up to which interest payments can be deferred		5 years
Junior subordinated notes | LIBOR | Trust I
Borrowings and junior subordinated debentures
Interest rate margin (percent)		1.85%

BORROWED FUNDS - Summary of Mat

BORROWED FUNDS - Summary of Maturities of FHLBB Advances (Details) $ in Thousands	Dec. 31, 2016USD ($)
Principal
Total FHLBB advances	$ 1,214,836
Fixed rate advances
Principal
2,017	1,157,118
2,018	43,901
2,019	0
2,020	5,543
2021 and beyond	8,274
Total FHLBB advances	$ 1,214,836
Weighted Average
Weighted Average Rate (percent)
Total FHLBB advances (percent)	0.81%
Weighted Average | Fixed rate advances
Weighted Average Rate (percent)
2017 (percent)	0.77%
2018 (percent)	1.33%
2019 (percent)	0.00%
2020 (percent)	1.94%
2021 and beyond (percent)	4.06%
Total FHLBB advances (percent)	0.81%

OTHER LIABILITIES (Details)

OTHER LIABILITIES (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Other Liabilities Disclosure [Abstract]
Derivative liabilities	$ 24,420	$ 28,181
Capital lease obligation	11,639	11,939
Asset purchase settlement payable	29,158	0
Employee benefits liability	11,661	11,692
Level lease liability	6,997	4,262
Other	49,280	35,370
Total other liabilities	$ 133,155	$ 91,444

EMPLOYEE BENEFIT PLANS EMPLOYEE

EMPLOYEE BENEFIT PLANS EMPLOYEE BENEFIT PLANS - Narrative (Details)	Aug. 01, 2014USD ($)	Dec. 31, 2016USD ($)acquisitionemployee	Dec. 31, 2015USD ($)acquisition	Dec. 31, 2014USD ($)	Dec. 31, 2011acquisition	Apr. 30, 2015USD ($)
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Non-elective contribution by employer as percentage of gross annual wages (percent)		3.00%
Matching contribution by employer (percent)		100.00%
Percentage of gross annual wages matched by employer (percent)		4.00%
Expense under the plan		$ 3,900,000	$ 3,600,000	$ 3,000,000
Number of significant acquisitions completed (acquisition) | acquisition		3	2		2
Hampden Bancorp Inc
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Split-dollar agreement, accrued liability		$ 1,200,000				$ 860,000
Fixed Income Funds
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Target plan asset allocation (percent)		36.00%
Marketable equity securities
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Target plan asset allocation (percent)		63.00%
Cash and Cash Equivalents
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Target plan asset allocation (percent)		1.00%
Pension Plans
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Number of employees participation (employee) | employee		0
Net actuarial (gain) loss		$ 1,500,000	$ 2,000,000
Expected cash contributions by employer		0
Amount expected to be amortized from other comprehensive income into net periodic pension cost over the next fiscal year		100,000
Defined benefit plan, fair value of plan assets		5,121,000	5,211,000	5,756,000
Transfers between Level 1, 2, and 3		$ 0	$ 0
Discount rate (percent)		4.17%	3.82%
Pension Plans | Level 3
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Defined benefit plan, fair value of plan assets		$ 0	$ 0
Pension Plans | Fixed Income Funds
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Defined benefit plan, fair value of plan assets		1,378,000	1,564,000
Postretirement Benefits
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Net actuarial (gain) loss		(126,000)	(257,000)
Amount expected to be amortized from other comprehensive income into net periodic pension cost over the next fiscal year		83,000
Defined benefit plan, fair value of plan assets		0	0	0
Prior service cost of long-term care plan participants	$ 558,000	$ 0	$ 1,595,000
Discount rate (percent)		3.91%	4.15%
Assumed health care cost trend rate (percent)		8.15%
Assumed health care cost trend rate in 2020 (percent)		3.89%
Supplemental Employee Retirement Plan
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Eligible age for retirement plan		62 years
Accrued liability for other plans		$ 7,400,000	$ 6,500,000
Other plans expense		917,000	$ 752,000	$ 583,000
Supplemental Employee Retirement Plan | Hampden Bancorp Inc
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Accrued liability for other plans		$ 1,200,000				$ 1,400,000

EMPLOYEE BENEFIT PLANS (Details

EMPLOYEE BENEFIT PLANS (Details) - USD ($) $ in Thousands	Aug. 01, 2014	Dec. 31, 2016	Dec. 31, 2015
Pension Plans
Change in projected benefit obligation:
Projected benefit obligation at beginning of year		$ 6,585	$ 7,193
Service Cost		76	0
Interest cost		267	268
Actuarial gain		(308)	(454)
Benefits paid		(318)	(351)
Settlements		(176)	(71)
Projected benefit obligation at end of year		6,126	6,585
Accumulated benefit obligation		6,126	6,585
Change in fair value of plan assets:
Fair value of plan assets at plan beginning of year		5,211	5,756
Actual return on plan assets		404	(123)
Contributions by employer		0	0
Benefits paid		(318)	(351)
Settlements		(176)	(71)
Fair value of plan assets at end of year		5,121	5,211
Funded status of the plan
Underfunded status		1,005	1,374
Postretirement Benefits
Change in projected benefit obligation:
Projected benefit obligation at beginning of year		3,039	1,604
Prior service cost of long-term care plan participants	$ 558	0	1,595
Service Cost		32	34
Interest cost		129	124
Participant contributions		47	47
Actuarial gain		(130)	284
Benefits paid		(128)	(81)
Amendments		0	0
Projected benefit obligation at end of year		3,249	3,039
Change in fair value of plan assets:
Fair value of plan assets at plan beginning of year		0	0
Contributions by employer		81	34
Contributions by participant		47	47
Benefits paid		(128)	(81)
Fair value of plan assets at end of year		$ 0	$ 0

EMPLOYEE BENEFIT PLANS - Amoun

EMPLOYEE BENEFIT PLANS - Amounts Recognized in Consolidated Balance Sheet (Details) - Other Liabilities - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Pension Plans
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Defined benefit plans, liabilities	$ 1,005	$ 1,374
Postretirement Benefits
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Defined benefit plans, liabilities	$ 3,249	$ 3,039

EMPLOYEE BENEFIT PLANS - Net Pe

EMPLOYEE BENEFIT PLANS - Net Periodic Pension Cost (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Pension Plans
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Service Cost	$ 76	$ 0
Interest cost	267	268
Expected return on plan assets	(361)	(455)
Amortization of unrecognized actuarial loss	163	175
Net periodic pension costs	145	(12)
Postretirement Benefits
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Service Cost	32	34
Interest cost	129	124
Amortization of unrecognized actuarial loss	0	0
Amortization of net prior service credit	83	83
Net periodic pension costs	$ 244	$ 241

EMPLOYEE BENEFIT PLANS - Change

EMPLOYEE BENEFIT PLANS - Change in Plan Assets and Benefit Obligations Recognized (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Pension Plans
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Amortization of actuarial (loss)	$ (163)	$ (176)
Actuarial (gain) loss	(351)	125
Total recognized in accumulated other comprehensive income	(514)	(51)
Total recognized in net periodic pension cost recognized and other comprehensive income	(369)	(63)
Postretirement Benefits
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Amortization of actuarial (loss)	0	0
Actuarial (gain) loss	(126)	(257)
Amortization of prior service credit	(83)	(83)
Total recognized in accumulated other comprehensive income	(209)	(340)
Accrued post-retirement liability recognized	$ 1,718	$ 1,555

EMPLOYEE BENEFIT PLANS - Princi

EMPLOYEE BENEFIT PLANS - Principal Actuarial Assumptions(Details) - Pension Plans	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Projected benefit obligation, discount rate	3.98%	4.17%
Net periodic pension cost, discount rate	4.17%	3.82%
Net periodic pension cost, long term rate of return on plan assets	7.00%	8.00%

EMPLOYEE BENEFIT PLANS - Fair V

EMPLOYEE BENEFIT PLANS - Fair Values of the Plan's Assets by Category and Level (Details 6) - Pension Plans - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Defined benefit plan, fair value of plan assets	$ 5,121	$ 5,211	$ 5,756
Equity Mutual Funds | Large-Cap
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Defined benefit plan, fair value of plan assets	1,624	1,516
Equity Mutual Funds | Mid-Cap
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Defined benefit plan, fair value of plan assets	401	374
Equity Mutual Funds | Small-Cap
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Defined benefit plan, fair value of plan assets	415	362
Equity Mutual Funds | International
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Defined benefit plan, fair value of plan assets	757	760
Fixed Income Funds
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Defined benefit plan, fair value of plan assets	1,378	1,564
Intermediate Duration
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Defined benefit plan, fair value of plan assets	472	522
Cash Equivalents - money market
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Defined benefit plan, fair value of plan assets	74	113
Level 1
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Defined benefit plan, fair value of plan assets	30	62
Level 1 | Equity Mutual Funds | Large-Cap
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Defined benefit plan, fair value of plan assets	0	0
Level 1 | Equity Mutual Funds | Mid-Cap
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Defined benefit plan, fair value of plan assets	0	0
Level 1 | Equity Mutual Funds | Small-Cap
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Defined benefit plan, fair value of plan assets	0	0
Level 1 | Equity Mutual Funds | International
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Defined benefit plan, fair value of plan assets	0	0
Level 1 | Fixed Income Funds
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Defined benefit plan, fair value of plan assets	0	0
Level 1 | Intermediate Duration
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Defined benefit plan, fair value of plan assets	0	0
Level 1 | Cash Equivalents - money market
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Defined benefit plan, fair value of plan assets	30	62
Level 2
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Defined benefit plan, fair value of plan assets	5,091	5,149
Level 2 | Equity Mutual Funds | Large-Cap
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Defined benefit plan, fair value of plan assets	1,624	1,516
Level 2 | Equity Mutual Funds | Mid-Cap
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Defined benefit plan, fair value of plan assets	401	374
Level 2 | Equity Mutual Funds | Small-Cap
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Defined benefit plan, fair value of plan assets	415	362
Level 2 | Equity Mutual Funds | International
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Defined benefit plan, fair value of plan assets	757	760
Level 2 | Fixed Income Funds
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Defined benefit plan, fair value of plan assets	1,378	1,564
Level 2 | Intermediate Duration
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Defined benefit plan, fair value of plan assets	472	522
Level 2 | Cash Equivalents - money market
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Defined benefit plan, fair value of plan assets	$ 44	$ 51

EMPLOYEE BENEFIT PLANS - Estima

EMPLOYEE BENEFIT PLANS - Estimated Benefit Payments (Details) $ in Thousands	Dec. 31, 2016USD ($)
Pension Plans
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
2,017	$ 342
2,018	338
2,019	375
2,020	367
2,021	357
2022-2026	1,829
Postretirement Benefits
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
2,017	81
2,018	100
2,019	100
2,020	99
2,021	102
2022-2026	$ 522

EMPLOYEE BENEFIT PLANS - Post-r

EMPLOYEE BENEFIT PLANS - Post-retirement Plan (Details) - Postretirement Benefits - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Net prior service cost (credit)	$ 1,659	$ 1,742
Net actuarial (gain) loss	(126)	(257)
Total recognized in accumulated other comprehensive income	$ 1,533	$ 1,485

INCOME TAXES - Provision for In

INCOME TAXES - Provision for Income Taxes (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Current:
Federal tax expense									$ 6,758	$ 4,696	$ 294
State tax expense									1,101	(1,631)	305
Total current expense									7,859	3,065	599
Deferred:
Federal tax expense									9,438	2,023	8,685
State tax expense									1,591	(24)	2,509
Total deferred tax expense									11,029	1,999	11,194
Change in valuation allowance									(104)	0	(30)
Income tax expense	$ 362	$ 6,953	$ 5,249	$ 6,220	$ 2,273	$ 1,350	$ 1,144	$ 297	$ 18,784	$ 5,064	$ 11,763

INCOME TAXES - Effective Tax Ra

INCOME TAXES - Effective Tax Rate (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Effective Income Tax Rate Reconciliation, Amount [Abstract]
Statutory tax rate									$ 27,108	$ 19,104	$ 15,928
State taxes, net of federal tax benefit									1,675	(974)	1,810
Tax exempt income - investments, net									(3,849)	(3,463)	(2,796)
Bank-owned life insurance									(1,364)	(1,284)	(1,070)
Disallowed merger costs									542	422	206
Non-deductible goodwill on disposal operations sale									0	313	0
Tax credits, net of basis reduction									(6,225)	(8,308)	(1,658)
Change in valuation allowance									125	0	0
Other, net									772	(746)	(657)
Income tax expense	$ 362	$ 6,953	$ 5,249	$ 6,220	$ 2,273	$ 1,350	$ 1,144	$ 297	$ 18,784	$ 5,064	$ 11,763
Effective Income Tax Rate Reconciliation, Percent [Abstract]
Statutory tax rate (percent)									35.00%	35.00%	35.00%
State taxes, net of federal tax benefit (percent)									2.20%	(1.80%)	4.00%
Tax exempt income - investments, net (percent)									(5.00%)	(6.30%)	(6.10%)
Bank-owned life insurance (percent)									(1.80%)	(2.40%)	(2.40%)
Disallowed merger costs (percent)									0.70%	0.80%	0.50%
Non-deductible goodwill on disposal operations sale (percent)									0.00%	0.60%	0.00%
Tax credits, net of basis reduction (percent)									(8.00%)	(15.20%)	(3.60%)
Change in valuation allowance (percent)									0.20%	0.00%	0.00%
Other, net (percent)									1.00%	(1.40%)	(1.50%)
Effective tax rate (percent)									24.30%	9.30%	25.90%

INCOME TAXES - Deferred Tax Lia

INCOME TAXES - Deferred Tax Liabilities and Assets (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Deferred tax assets:
Allowance for loan losses	$ 17,747	$ 16,303
Tax credit carryforwards	4,100	7,295
Unrealized capital loss on tax credit investments	6,999	2,892
Net unrealized loss on swaps, securities available for sale, and pension in OCI	0	2,371
Employee benefit plans	7,813	8,776
Purchase accounting adjustments	23,520	10,755
Net operating loss and capital loss carryforwards	2,643	3,317
Other	4,997	2,527
Deferred tax assets, net before valuation allowances	67,819	54,236
Valuation allowance	(125)	(229)
Deferred tax assets, net of valuation allowances	67,694	54,007
Deferred tax liabilities:
Net unrealized gain on swaps, securities available for sale, and pension in OCI	(5,884)	0
Premises and equipment	(2,519)	(2,577)
Loan Servicing Rights	(4,546)	0
Intangible amortization	(11,543)	(8,904)
Other	(2,074)	0
Deferred tax liabilities	(26,566)	(11,481)
Deferred tax assets, net	$ 41,128	$ 42,526

INCOME TAXES - Narrative (Detai

INCOME TAXES - Narrative (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Income Tax Contingency [Line Items]
Decrease in net deferred tax assets	$ 1,400
Deferred tax benefit recognized due to decrease in equity	8,300
Decrease in valuation allowance	104
State tax basis, net of Federal tax benefit (of 35%)	125	$ 229
Net operating loss and capital loss carryforwards	2,643	$ 3,317
Alternative minimum tax credit carryforward amount	4,100
Internal Revenue Service (IRS)
Income Tax Contingency [Line Items]
Operating loss carryforwards	7,500
State and Local Jurisdiction | New York
Income Tax Contingency [Line Items]
Operating loss carryforwards	6,100
State and Local Jurisdiction | Connecticut
Income Tax Contingency [Line Items]
Operating loss carryforwards	13,900
First Choice Bank
Income Tax Contingency [Line Items]
Decrease in net deferred tax assets	$ (17,800)

INCOME TAXES - Valuation Allowa

INCOME TAXES - Valuation Allowance (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Income Tax Disclosure [Abstract]
State tax basis difference, net of Federal tax benefit (of 35%)	$ (125)	$ (229)
Valuation allowances	$ 125	$ 229
Federal tax rate (percent)	35.00%	35.00%	35.00%

INCOME TAXES - Unrecognized Tax

INCOME TAXES - Unrecognized Tax Benefits (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns [Roll Forward]
Unrecognized tax benefits at January 1	$ 307	$ 553	$ 477
Increase in gross amounts of tax positions related to prior years	270	0	55
Increase in gross amounts of tax positions related to current year	0	0	93
Decrease due to lapse in statute of limitations	(117)	(246)	(72)
Unrecognized tax benefits at December 31	$ 460	$ 307	$ 553

DERIVATIVE INSTRUMENTS AND H116

DERIVATIVE INSTRUMENTS AND HEDGING ACTIVITIES - Narrative (Details)	Feb. 07, 2017USD ($)	Dec. 31, 2016USD ($)contract	Sep. 30, 2016USD ($)	Jun. 30, 2016USD ($)	Mar. 31, 2016USD ($)	Dec. 31, 2015USD ($)	Sep. 30, 2015USD ($)	Jun. 30, 2015USD ($)	Mar. 31, 2015USD ($)	Dec. 31, 2016USD ($)contract	Dec. 31, 2015USD ($)	Dec. 31, 2014USD ($)
Derivative [Line Items]
Derivative, notional amount		$ 2,199,862,000				$ 1,366,667,000				$ 2,199,862,000	$ 1,366,667,000
Cash pledged as collateral to derivative counterparties		900,000				16,100,000				900,000	16,100,000
Amortized cost of securities pledged as collateral to derivative counterparties		47,800,000				24,600,000				47,800,000	24,600,000
Fair value of securities as pledged collateral to derivative counterparties		47,900,000				24,600,000				47,900,000	24,600,000
Interest expense		13,276,000	$ 12,540,000	$ 11,577,000	$ 10,779,000	9,676,000	$ 8,481,000	$ 7,766,000	$ 7,258,000	48,172,000	33,181,000	$ 28,351,000
Estimated liability		2,804,000				10,676,000				2,804,000	10,676,000
Reclassification out of Accumulated Other Comprehensive Income | Subsequent Event | Accumulated Net Gain (Loss) from Cash Flow Hedges
Derivative [Line Items]
Interest expense	$ 6,600,000
Interest Rate Swap
Derivative [Line Items]
Cash pledged as collateral to derivative counterparties		650,000				9,720,000				650,000	9,720,000
Amount of collateral posted for the net liability positions		19,800,000				28,200,000				19,800,000	28,200,000
Interest Rate Swap | Commercial counterparties
Derivative [Line Items]
Cash pledged as collateral to derivative counterparties		0				0				0	0
Derivative asset, fair value, amount offset against collateral		11,500,000				17,100,000				11,500,000	17,100,000
Amount of collateral posted for the net liability positions		4,400,000				0				4,400,000	0
Interest Rate Swap | Financial institutions counterparties
Derivative [Line Items]
Amount of collateral posted for the net liability positions		15,400,000				28,200,000				15,400,000	28,200,000
Non-hedging derivatives
Derivative [Line Items]
Derivative, notional amount		208,145,000				36,043,000				208,145,000	36,043,000
Estimated liability		$ (4,738,000)				(323,000)				$ (4,738,000)	(323,000)
Cash Flow Hedging | Interest Rate Swap
Derivative [Line Items]
Number of derivative contracts (contract) | contract		6								6
Durations of derivative instruments										3 years
Cash Flow Hedging | Interest Rate Swap | FHLBB borrowings
Derivative [Line Items]
Derivative, notional amount		$ 300,000,000								$ 300,000,000
Period of rolling advances										1 month
Maturity period with fixed interest rate										1 month
Interest expense										$ 3,981,000	0
Cash Flow Hedging | Hedging derivatives
Derivative [Line Items]
Derivative, notional amount		300,000,000				300,000,000				300,000,000	300,000,000
Estimated liability		6,573,000				8,532,000				6,573,000	8,532,000
Cash Flow Hedging | Hedging derivatives | Interest Rate Swap
Derivative [Line Items]
Derivative, notional amount		300,000,000								300,000,000
Cash Flow Hedging | Hedging derivatives | Interest Rate Swap | FHLBB borrowings
Derivative [Line Items]
Derivative, notional amount		300,000,000								300,000,000
Estimated liability		6,573,000								6,573,000
Economic Hedging
Derivative [Line Items]
Credit valuation adjustments		$ 800,000								$ 800,000
Economic Hedging | Tax advantaged economic development bonds
Derivative [Line Items]
Fixed rate of interest (percent)		5.09%								5.09%
Maturity period										21 years
Economic Hedging | Interest Rate Swap | Tax advantaged economic development bonds
Derivative [Line Items]
Derivative, notional amount		$ 11,400,000								$ 11,400,000
Economic Hedging | Hedging derivatives
Derivative [Line Items]
Derivative, notional amount		1,691,717,000				1,030,624,000				1,691,717,000	1,030,624,000
Estimated liability		969,000				2,467,000				969,000	2,467,000
Economic Hedging | Hedging derivatives | Interest Rate Swap
Derivative [Line Items]
Derivative, notional amount		1,300,000,000								1,300,000,000
Economic Hedging | Hedging derivatives | Interest Rate Swap | Tax advantaged economic development bonds
Derivative [Line Items]
Derivative, notional amount		11,386,000				11,984,000				11,386,000	11,984,000
Estimated liability		2,021,000				2,450,000				2,021,000	2,450,000
Economic Hedging | Hedging derivatives | Risk Participation Agreements
Derivative [Line Items]
Derivative, notional amount		83,360,000				59,016,000				83,360,000	59,016,000
Estimated liability		(5,000)				56,000				(5,000)	56,000
Economic Hedging | Hedging derivatives | Forward Commitments
Derivative [Line Items]
Derivative, notional amount		259,889,000				44,840,000				259,889,000	44,840,000
Estimated liability		$ (722,000)				$ (53,000)				$ (722,000)	$ (53,000)

DERIVATIVE INSTRUMENTS AND H117

DERIVATIVE INSTRUMENTS AND HEDGING ACTIVITIES (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Offsetting Assets [Line Items]
Notional Amount	$ 2,199,862	$ 1,366,667
Estimated Fair Value Asset (Liability)	(2,804)	(10,676)
Cash flow hedges | Interest rate swap | FHLBB borrowings
Offsetting Assets [Line Items]
Notional Amount	300,000
Economic hedges | Interest rate swap | Tax advantaged economic development bonds
Offsetting Assets [Line Items]
Notional Amount	11,400
Hedging derivatives | Cash flow hedges
Offsetting Assets [Line Items]
Notional Amount	300,000	300,000
Estimated Fair Value Asset (Liability)	(6,573)	(8,532)
Hedging derivatives | Cash flow hedges | Interest rate swap
Offsetting Assets [Line Items]
Notional Amount	300,000
Hedging derivatives | Cash flow hedges | Interest rate swap | FHLBB borrowings
Offsetting Assets [Line Items]
Notional Amount	$ 300,000
Weighted Average Maturity	2 years 3 months 18 days
Derivative, weighted average rate, received (percent)	0.63%
Derivative, weighted average rate, paid (percent)	2.29%
Estimated Fair Value Asset (Liability)	$ (6,573)
Hedging derivatives | Cash flow hedges | Forward starting interest rate swap | FHLBB borrowings
Offsetting Assets [Line Items]
Notional Amount		$ 300,000
Weighted Average Maturity		3 years 3 months 18 days
Derivative, weighted average rate, received (percent)		0.14%
Derivative, weighted average rate, paid (percent)		2.29%
Estimated Fair Value Asset (Liability)		$ (8,532)
Hedging derivatives | Economic hedges
Offsetting Assets [Line Items]
Notional Amount	1,691,717	1,030,624
Estimated Fair Value Asset (Liability)	(969)	(2,467)
Hedging derivatives | Economic hedges | Interest rate swap
Offsetting Assets [Line Items]
Notional Amount	1,300,000
Hedging derivatives | Economic hedges | Interest rate swap | Tax advantaged economic development bonds
Offsetting Assets [Line Items]
Notional Amount	$ 11,386	$ 11,984
Weighted Average Maturity	12 years 10 months 24 days	13 years 10 months 24 days
Derivative, weighted average rate, received (percent)	0.98%	0.61%
Derivative, weighted average rate, paid (percent)	5.09%	5.09%
Estimated Fair Value Asset (Liability)	$ (2,021)	$ (2,450)
Hedging derivatives | Economic hedges | Interest rate swap | Commercial loan
Offsetting Assets [Line Items]
Notional Amount	$ 668,541	$ 457,392
Weighted Average Maturity	6 years 2 months 5 days	6 years 8 months 6 days
Derivative, weighted average rate, received (percent)	2.43%	2.18%
Derivative, weighted average rate, paid (percent)	4.21%	4.49%
Estimated Fair Value Asset (Liability)	$ (6,752)	$ (17,143)
Hedging derivatives | Economic hedges | Reverse interest rate swaps | Commercial loan
Offsetting Assets [Line Items]
Notional Amount	$ 668,541	$ 457,392
Weighted Average Maturity	6 years 2 months 5 days	6 years 8 months 6 days
Derivative, weighted average rate, received (percent)	4.21%	4.49%
Derivative, weighted average rate, paid (percent)	2.43%	2.18%
Estimated Fair Value Asset (Liability)	$ 7,077	$ 17,129
Hedging derivatives | Economic hedges | Risk participation agreements
Offsetting Assets [Line Items]
Notional Amount	$ 83,360	$ 59,016
Weighted Average Maturity	11 years 6 months 20 days	15 years 18 days
Estimated Fair Value Asset (Liability)	$ 5	$ (56)
Hedging derivatives | Economic hedges | Forward sale commitments
Offsetting Assets [Line Items]
Notional Amount	$ 259,889	$ 44,840
Weighted Average Maturity	2 months 12 days	2 months 12 days
Estimated Fair Value Asset (Liability)	$ 722	$ 53
Non-hedging derivatives
Offsetting Assets [Line Items]
Notional Amount	208,145	36,043
Estimated Fair Value Asset (Liability)	4,738	323
Non-hedging derivatives | Commitments to lend
Offsetting Assets [Line Items]
Notional Amount	$ 208,145	$ 36,043
Weighted Average Maturity	2 months 12 days	2 months 12 days
Estimated Fair Value Asset (Liability)	$ 4,738	$ 323

DERIVATIVE INSTRUMENTS AND H118

DERIVATIVE INSTRUMENTS AND HEDGING ACTIVITIES - Amounts included in Consolidated Statements of Income and in Other Comprehensive Income (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Derivative [Line Items]
Less: Reclassification of unrealized (loss) from accumulated other comprehensive loss to interest expense	$ (13,276)	$ (12,540)	$ (11,577)	$ (10,779)	$ (9,676)	$ (8,481)	$ (7,766)	$ (7,258)	$ (48,172)	$ (33,181)	$ (28,351)
Net interest expense recognized in interest expense on hedged FHLBB borrowings									17,289	10,233	$ 9,166
Interest Rate Swap | Cash Flow Hedging
Derivative [Line Items]
Other comprehensive income recorded in accumulated other comprehensive income, net of reclassification adjustments and tax effects									1,123	(3,138)
FHLBB borrowings | Interest Rate Swap | Cash Flow Hedging
Derivative [Line Items]
Unrealized (loss) recognized in accumulated other comprehensive loss									(2,023)	(5,232)
Less: Reclassification of unrealized (loss) from accumulated other comprehensive loss to interest expense									(3,981)	0
Net tax effect on items recognized in accumulated other comprehensive income									835	2,094
Net interest expense recognized in interest expense on hedged FHLBB borrowings									$ 3,981	$ 0

DERIVATIVE INSTRUMENTS AND H119

DERIVATIVE INSTRUMENTS AND HEDGING ACTIVITIES - Economic Hedges and Non-hedging Derivatives (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Hedging derivatives | Economic Hedging | Interest Rate Swap | Industrial Revenue Bond
Derivative [Line Items]
Unrealized gain (loss) recognized in other non-interest income	$ (75)	$ (344)
Hedging derivatives | Economic Hedging | Interest Rate Swap | Commercial loan
Derivative [Line Items]
Unrealized gain (loss) recognized in other non-interest income	1,312	(4,852)
Hedging derivatives | Economic Hedging | Reverse Interest Rate Swaps | Commercial loan
Derivative [Line Items]
Unrealized gain (loss) recognized in other non-interest income	(1,312)	4,852
Favorable (unfavorable) change in credit valuation adjustment recognized in other non-interest income	338	(51)
Hedging derivatives | Economic Hedging | Risk Participation Agreements
Derivative [Line Items]
Unrealized gain (loss) recognized in other non-interest income	(61)	(36)
Hedging derivatives | Economic Hedging | Forward Commitments
Derivative [Line Items]
Unrealized gain (loss) recognized in other non-interest income	(1,176)	(247)
Realized gain (loss) in other non-interest income	(3,705)	45
Non-hedging derivatives | Interest rate lock commitments
Derivative [Line Items]
Unrealized gain (loss) recognized in other non-interest income	8,373	2,436
Realized gain (loss) in other non-interest income	$ 3,650	$ 1,899

DERIVATIVE INSTRUMENTS AND H120

DERIVATIVE INSTRUMENTS AND HEDGING ACTIVITIES - Offsetting of Financial Assets and Derivative Assets (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Offsetting Assets [Line Items]
Net Amounts of Assets Presented in the Statements of Condition	$ 21,617	$ 17,507
Interest Rate Swap
Offsetting Assets [Line Items]
Gross Amounts of Recognized Assets	11,510	17,169
Gross Amounts Offset in the Statements of Condition	0	0
Net Amounts of Assets Presented in the Statements of Condition	11,510	17,169
Gross amounts not offset in the Statement of Condition, financial instruments	0	0
Gross amounts not offset in the Statement of Condition, cash collateral received	0	0
Net Amount	11,510	17,169
Interest Rate Swap | Institutional counterparties
Offsetting Assets [Line Items]
Gross Amounts of Recognized Assets	49	40
Gross Amounts Offset in the Statements of Condition	0	0
Net Amounts of Assets Presented in the Statements of Condition	49	40
Gross amounts not offset in the Statement of Condition, financial instruments	0	0
Gross amounts not offset in the Statement of Condition, cash collateral received	0	0
Net Amount	49	40
Interest Rate Swap | Commercial counterparties
Offsetting Assets [Line Items]
Gross Amounts of Recognized Assets	11,461	17,129
Gross Amounts Offset in the Statements of Condition	0	0
Net Amounts of Assets Presented in the Statements of Condition	11,461	17,129
Gross amounts not offset in the Statement of Condition, financial instruments	0	0
Gross amounts not offset in the Statement of Condition, cash collateral received	0	0
Net Amount	$ 11,461	$ 17,129

DERIVATIVE INSTRUMENTS AND H121

DERIVATIVE INSTRUMENTS AND HEDGING ACTIVITIES - Offsetting of Financial Liabilities and Derivative Liabilities (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Offsetting Liabilities [Line Items]
Net Amounts of Liabilities Presented in the Statement of Condition	$ (24,420)	$ (28,181)
Gross amounts not offset in the Statements of Condition, cash collateral pledged	900	16,100
Interest Rate Swap
Offsetting Liabilities [Line Items]
Gross Amounts of Recognized Liabilities	(24,484)	(28,220)
Gross Amounts Offset in the Statements of Condition	4,712	0
Net Amounts of Liabilities Presented in the Statement of Condition	(19,772)	(28,220)
Gross amounts not offset in the Statements of Condition, financial instruments	14,738	18,500
Gross amounts not offset in the Statements of Condition, cash collateral pledged	650	9,720
Net Amount	(4,384)	0
Interest Rate Swap | Institutional counterparties
Offsetting Liabilities [Line Items]
Gross Amounts of Recognized Liabilities	(20,077)	(28,220)
Gross Amounts Offset in the Statements of Condition	4,689	0
Net Amounts of Liabilities Presented in the Statement of Condition	(15,388)	(28,220)
Gross amounts not offset in the Statements of Condition, financial instruments	14,738	18,500
Gross amounts not offset in the Statements of Condition, cash collateral pledged	650	9,720
Net Amount	0	0
Interest Rate Swap | Commercial counterparties
Offsetting Liabilities [Line Items]
Gross Amounts of Recognized Liabilities	(4,407)	0
Gross Amounts Offset in the Statements of Condition	23	0
Net Amounts of Liabilities Presented in the Statement of Condition	(4,384)	0
Gross amounts not offset in the Statements of Condition, financial instruments	0	0
Gross amounts not offset in the Statements of Condition, cash collateral pledged	0	0
Net Amount	$ (4,384)	$ 0

OTHER COMMITMENTS, CONTINGEN122

OTHER COMMITMENTS, CONTINGENCIES, AND OFF-BALANCE SHEET ACTIVITIES) (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Financial commitments whose contractual amount represents credit risk
Total	$ 1,446,396	$ 1,113,123
Commitments to originate new loans
Financial commitments whose contractual amount represents credit risk
Total	243,519	102,145
Unused funds on commercial and other lines of credit
Financial commitments whose contractual amount represents credit risk
Total	574,043	525,603
Unadvanced funds on home equity lines of credit
Financial commitments whose contractual amount represents credit risk
Total	281,621	258,897
Unadvanced funds on construction and real estate loans
Financial commitments whose contractual amount represents credit risk
Total	320,635	201,764
Standby letters of credit
Financial commitments whose contractual amount represents credit risk
Total	14,939	12,775
Lease obligation
Financial commitments whose contractual amount represents credit risk
Total	$ 11,639	$ 11,939

OTHER COMMITMENTS, CONTINGEN123

OTHER COMMITMENTS, CONTINGENCIES, AND OFF-BALANCE SHEET ACTIVITIES - Narrative (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2016USD ($)employee	Dec. 31, 2015USD ($)	Dec. 31, 2014USD ($)	Dec. 22, 2016USD ($)wire_transfer
Future minimum rental payments
2,017	$ 14,000
2,018	11,600
2,019	10,200
2,020	9,600
2,021	8,200
Thereafter	$ 68,900
Extendable term	20 years
Total rent expense	$ 8,300	$ 7,500	$ 7,200
Lease Obligations
2,017	680
2,018	647
2,019	646
2,020	644
2,021	612
Thereafter	5,600
Future obligations required under the financing lease
2,017	81
2,018	86
2,019	86
2,020	86
2,021	86
Thereafter	$ 1,600
Employment agreement term	3 years
Number of senior executives which entered into an employment agreement with the Company | employee	1
Number of wire transfers in claim | wire_transfer				2
Aggregate value of wire transfers in claim				$ 1,400

SHAREHOLDERS' EQUITY AND EAR124

SHAREHOLDERS' EQUITY AND EARNINGS PER COMMON SHARE SHAREHOLDERS' EQUITY AND EARNINGS PER COMMON SHARE (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Capital [Abstract]
Total capital to risk-weighted assets, actual amount	$ 803,618	$ 686,489
Total capital to risk-weighted assets, actual percent	11.87%	11.91%
Total capital to risk-weighted assets, minimum capital requirement, amount	$ 541,603	$ 461,231
Total capital to risk-weighted assets, minimum capital requirement, percent	8.00%	8.00%
Total capital to risk-weighted assets, minimum to be well capitalized under prompt corrective action provisions, amount	$ 677,004	$ 576,539
Total capital to risk-weighted assets, minimum to be well capitalized under prompt corrective action provisions, percent	10.00%	10.00%
Common Equity Tier One Risk Based Capital to Risk Weighted Assets, Amount	$ 670,120	$ 564,878
Common Equity Tier One Risk Based Capital to Risk Weighted Assets	9.90%	9.80%
Common Equity Tier One Risk Based Capital Required to be Well Capitalized to Risk Weighted Assets, Amount	$ 304,652	$ 259,443
Common Equity Tier One Risk Based Capital Required to be Well Capitalized to Risk Weighted Assets	4.50%	4.50%
Common Entity Tier 1 Capital To Risk Weighted Assets, Capital Required to be Well Capitalized	$ 440,053	$ 374,750
Common Entity Tier 1 Capital To Risk Weighted Assets, Capital Required to be Well Capitalized, Percent	6.50%	6.50%
Tier One Risk Based Capital [Abstract]
Tier 1 capital risk-weighted assets, amount	$ 681,500	$ 573,033
Tier 1 capital risk-weighted assets, percent	10.07%	9.94%
Tier 1 capital risk-weighted assets, minimum capital requirement, amount	$ 406,202	$ 345,924
Tier 1 capital risk-weighted assets, minimum capital requirement, percent	6.00%	6.00%
Tier 1 capital risk-weighted assets, minimum to be well capitalized under prompt corrective action provisions, amount	$ 541,603	$ 461,231
Tier 1 capital risk-weighted assets, minimum to be well capitalized under prompt corrective action provisions, percent	8.00%	8.00%
Tier One Leverage Capital [Abstract]
Tier 1 capital to average assets, amount	$ 681,500	$ 573,033
Tier 1 capital to average assets, percent	7.88%	7.71%
Tier 1 capital to average assets, minimum capital requirement, amount	$ 270,802	$ 297,420
Tier 1 capital to average assets, minimum capital requirement, percent	4.00%	4.00%
Tier 1 capital to average assets, minimum to be well capitalized under prompt corrective action provisions, amount	$ 338,502	$ 371,775
Tier 1 capital to average assets, minimum to be well capitalized under prompt corrective action provisions, percent	5.00%	5.00%
Subsidiaries
Capital [Abstract]
Total capital to risk-weighted assets, actual amount	$ 756,792	$ 642,866
Total capital to risk-weighted assets, actual percent	11.21%	11.16%
Total capital to risk-weighted assets, minimum capital requirement, amount	$ 539,893	$ 460,882
Total capital to risk-weighted assets, minimum capital requirement, percent	8.00%	8.00%
Total capital to risk-weighted assets, minimum to be well capitalized under prompt corrective action provisions, amount	$ 674,866	$ 576,103
Total capital to risk-weighted assets, minimum to be well capitalized under prompt corrective action provisions, percent	10.00%	10.00%
Common Equity Tier One Risk Based Capital to Risk Weighted Assets, Amount	$ 672,244	$ 569,131
Common Equity Tier One Risk Based Capital to Risk Weighted Assets	9.96%	9.88%
Common Equity Tier One Risk Based Capital Required to be Well Capitalized to Risk Weighted Assets, Amount	$ 303,690	$ 259,246
Common Equity Tier One Risk Based Capital Required to be Well Capitalized to Risk Weighted Assets	4.50%	4.50%
Common Entity Tier 1 Capital To Risk Weighted Assets, Capital Required to be Well Capitalized	$ 438,663	$ 374,467
Common Entity Tier 1 Capital To Risk Weighted Assets, Capital Required to be Well Capitalized, Percent	6.50%	6.50%
Tier One Risk Based Capital [Abstract]
Tier 1 capital risk-weighted assets, amount	$ 672,244	$ 569,131
Tier 1 capital risk-weighted assets, percent	9.96%	9.88%
Tier 1 capital risk-weighted assets, minimum capital requirement, amount	$ 404,920	$ 345,662
Tier 1 capital risk-weighted assets, minimum capital requirement, percent	6.00%	6.00%
Tier 1 capital risk-weighted assets, minimum to be well capitalized under prompt corrective action provisions, amount	$ 539,893	$ 460,882
Tier 1 capital risk-weighted assets, minimum to be well capitalized under prompt corrective action provisions, percent	8.00%	8.00%
Tier One Leverage Capital [Abstract]
Tier 1 capital to average assets, amount	$ 672,244	$ 569,131
Tier 1 capital to average assets, percent	7.84%	7.66%
Tier 1 capital to average assets, minimum capital requirement, amount	$ 269,920	$ 297,313
Tier 1 capital to average assets, minimum capital requirement, percent	4.00%	4.00%
Tier 1 capital to average assets, minimum to be well capitalized under prompt corrective action provisions, amount	$ 337,433	$ 371,641
Tier 1 capital to average assets, minimum to be well capitalized under prompt corrective action provisions, percent	5.00%	5.00%

SHAREHOLDERS' EQUITY AND EAR125

SHAREHOLDERS' EQUITY AND EARNINGS PER COMMON SHARE - Accumulated Other Comprehensive Loss (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated other comprehensive (loss) income	$ 9,766	$ (3,305)	$ 6,579	$ (9,057)
Net unrealized holding gain on AFS securities
Accumulated Other Comprehensive Income (Loss) [Line Items]
Other accumulated comprehensive income/(loss), before tax	25,176	6,316
Income taxes related to items of accumulated other comprehensive income/(loss)	(9,636)	(2,437)
Accumulated other comprehensive (loss) income	15,541	3,880	9,916	(5,776)
Net (loss) on effective cash flow hedging derivatives
Accumulated Other Comprehensive Income (Loss) [Line Items]
Other accumulated comprehensive income/(loss), before tax	(6,573)	(8,532)
Income taxes related to items of accumulated other comprehensive income/(loss)	2,589	3,424
Accumulated other comprehensive (loss) income	(3,985)	(5,108)	(1,969)	(1,366)
Net unrealized holding (loss) on pension plans
Accumulated Other Comprehensive Income (Loss) [Line Items]
Other accumulated comprehensive income/(loss), before tax	(2,954)	(3,469)
Income taxes related to items of accumulated other comprehensive income/(loss)	1,164	1,392
Accumulated other comprehensive (loss) income	$ (1,790)	$ (2,077)	$ (1,368)	$ 10

SHAREHOLDERS' EQUITY AND EAR126

SHAREHOLDERS' EQUITY AND EARNINGS PER COMMON SHARE - Components of Other Comprehensive Income (Loss) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Accumulated Other Comprehensive Income (Loss) [Line Items]
Other comprehensive income (loss), before reclassifications, net of tax	$ 10,257	$ (8,776)	$ 10,805
Less: reclassification adjustment for (losses) gains realized in net income	2,814	(1,108)	4,831
Total other comprehensive income (loss), before tax	21,333	(16,086)	25,206
Total income tax (expense) benefit related to other comprehensive income (loss)	(8,262)	6,202	(9,570)
Total other comprehensive income (loss)	13,071	(9,884)	15,636
Net unrealized holding gain on AFS securities
Accumulated Other Comprehensive Income (Loss) [Line Items]
Other comprehensive income (loss), before reclassifications, before tax	18,309	(7,567)	25,769
Other comprehensive income (loss) before reclassifications, tax	(6,979)	2,793	(9,791)
Other comprehensive income (loss), before reclassifications, net of tax	11,330	(4,774)	15,978
Less: reclassification from accumulated other comprehensive income, current period, before tax	551	(2,110)	(482)
Less: reclassification adjustment for (losses) gains realized in net income	(220)	847	196
Less: reclassification adjustment for (losses) gains realized in net income	331	(1,263)	(286)
Total other comprehensive income (loss), before tax	18,860	(9,677)	25,287
Total income tax (expense) benefit related to other comprehensive income (loss)	(7,199)	3,640	(9,595)
Total other comprehensive income (loss)	11,661	(6,037)	15,692
Net (loss) on effective cash flow hedging derivatives
Accumulated Other Comprehensive Income (Loss) [Line Items]
Other comprehensive income (loss), before reclassifications, before tax	(2,023)	(5,232)	(6,403)
Other comprehensive income (loss) before reclassifications, tax	754	2,094	2,608
Other comprehensive income (loss), before reclassifications, net of tax	(1,269)	(3,138)	(3,795)
Less: reclassification from accumulated other comprehensive income, current period, before tax	3,981	0	5,393
Less: reclassification adjustment for (losses) gains realized in net income	(1,589)	0	(2,201)
Less: reclassification adjustment for (losses) gains realized in net income	2,392	0	3,192
Total other comprehensive income (loss), before tax	1,958	(5,232)	(1,010)
Total income tax (expense) benefit related to other comprehensive income (loss)	(835)	2,094	407
Total other comprehensive income (loss)	1,123	(3,138)	(603)
Net loss on terminated swap
Accumulated Other Comprehensive Income (Loss) [Line Items]
Other comprehensive income (loss), before reclassifications, before tax			0
Other comprehensive income (loss) before reclassifications, tax			0
Other comprehensive income (loss), before reclassifications, net of tax	0	0	0
Less: reclassification from accumulated other comprehensive income, current period, before tax			3,237
Less: reclassification adjustment for (losses) gains realized in net income			(1,312)
Less: reclassification adjustment for (losses) gains realized in net income	0	0	1,925
Total other comprehensive income (loss), before tax			3,237
Total income tax (expense) benefit related to other comprehensive income (loss)			(1,312)
Total other comprehensive income (loss)	0	0	1,925
Net unrealized holding (loss) on pension plans
Accumulated Other Comprehensive Income (Loss) [Line Items]
Other comprehensive income (loss), before reclassifications, before tax	351	(1,436)	(2,308)
Other comprehensive income (loss) before reclassifications, tax	(155)	572	930
Other comprehensive income (loss), before reclassifications, net of tax	196	(864)	(1,378)
Less: reclassification from accumulated other comprehensive income, current period, before tax	164	259	0
Less: reclassification adjustment for (losses) gains realized in net income	(73)	(104)	0
Less: reclassification adjustment for (losses) gains realized in net income	91	155	0
Total other comprehensive income (loss), before tax	515	(1,177)	(2,308)
Total income tax (expense) benefit related to other comprehensive income (loss)	(228)	468	930
Total other comprehensive income (loss)	$ 287	$ (709)	$ (1,378)

SHAREHOLDERS' EQUITY AND EAR127

SHAREHOLDERS' EQUITY AND EARNINGS PER COMMON SHARE - Changes in Each Component of Accumulated Other Comprehensive Income (Loss) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Balance at Beginning of Year	$ (3,305)	$ 6,579	$ (9,057)
Other Comprehensive (Loss) before reclassifications	10,257	(8,776)	10,805
Amounts Reclassified from Accumulated other comprehensive income	(2,814)	1,108	(4,831)
Total other comprehensive income (loss)	13,071	(9,884)	15,636
Balance at End of Period	9,766	(3,305)	6,579
Net unrealized holding gain on AFS securities
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Balance at Beginning of Year	3,880	9,916	(5,776)
Other Comprehensive (Loss) before reclassifications	11,330	(4,774)	15,978
Amounts Reclassified from Accumulated other comprehensive income	(331)	1,263	286
Total other comprehensive income (loss)	11,661	(6,037)	15,692
Balance at End of Period	15,541	3,880	9,916
Net (loss) on effective cash flow hedging derivatives
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Balance at Beginning of Year	(5,108)	(1,969)	(1,366)
Other Comprehensive (Loss) before reclassifications	(1,269)	(3,138)	(3,795)
Amounts Reclassified from Accumulated other comprehensive income	(2,392)	0	(3,192)
Total other comprehensive income (loss)	1,123	(3,138)	(603)
Balance at End of Period	(3,985)	(5,108)	(1,969)
Net loss on terminated swap
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Balance at Beginning of Year	0	0	(1,925)
Other Comprehensive (Loss) before reclassifications	0	0	0
Amounts Reclassified from Accumulated other comprehensive income	0	0	(1,925)
Total other comprehensive income (loss)	0	0	1,925
Balance at End of Period	0	0	0
Net unrealized holding (loss) on pension plans
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Balance at Beginning of Year	(2,077)	(1,368)	10
Other Comprehensive (Loss) before reclassifications	196	(864)	(1,378)
Amounts Reclassified from Accumulated other comprehensive income	(91)	(155)	0
Total other comprehensive income (loss)	287	(709)	(1,378)
Balance at End of Period	$ (1,790)	$ (2,077)	$ (1,368)

SHAREHOLDERS' EQUITY AND EAR128

SHAREHOLDERS' EQUITY AND EARNINGS PER COMMON SHARE - Amounts Reclassified Out of Each Component of Accumulated Other Comprehensive Income (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Non-interest expense (income)	$ 16,725	$ 18,941	$ 14,555	$ 15,630	$ 12,248	$ 12,698	$ 16,780	$ 12,562	$ 65,851	$ 54,288	$ 47,770
Interest income	59,158	57,971	57,441	57,697	58,748	56,971	52,637	45,493	232,267	213,849	178,691
Income tax expense	(362)	(6,953)	(5,249)	(6,220)	(2,273)	(1,350)	(1,144)	(297)	(18,784)	(5,064)	(11,763)
Net income	$ 10,331	$ 16,381	$ 15,957	$ 16,001	$ 16,013	$ 14,701	$ 10,044	$ 8,759	58,670	49,518	33,744
Reclassification out of Accumulated Other Comprehensive Income
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Net income									2,632	(1,108)	4,831
Realized (gains) on AFS securities | Reclassification out of Accumulated Other Comprehensive Income
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Non-interest expense (income)									(551)	2,110	482
Income tax expense									220	(847)	(196)
Net income									(331)	1,263	286
Realized losses on cash flow hedging derivatives | Reclassification out of Accumulated Other Comprehensive Income
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Interest income									(3,981)	0	(5,393)
Income tax expense									1,589	0	2,201
Net income									(2,392)	0	(3,192)
Net loss on terminated swap | Reclassification out of Accumulated Other Comprehensive Income
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Interest income									0	0	(3,237)
Income tax expense									0	0	1,312
Net income									0	0	(1,925)
Realized (losses) on pension plans | Reclassification out of Accumulated Other Comprehensive Income
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Non-interest expense (income)									(164)	259	0
Income tax expense									73	(104)	0
Net income									$ (91)	$ 155	$ 0

SHAREHOLDERS' EQUITY AND EAR129

SHAREHOLDERS' EQUITY AND EARNINGS PER COMMON SHARE - Earnings Per Common Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Earnings Per Share Basic and Diluted [Line Items]
Net income	$ 10,331	$ 16,381	$ 15,957	$ 16,001	$ 16,013	$ 14,701	$ 10,044	$ 8,759	$ 58,670	$ 49,518	$ 33,744
Weighted average number of shares issued, basic (shares)									32,604	30,074	26,525
Weighted average number of shares, treasury stock (shares)									1,116	1,215	1,386
Weighted average number of shares, restricted stock (shares)									500	466	409
Weighted average number of shares outstanding, basic (shares)	32,185	30,621	30,605	30,511	30,500	29,893	28,301	24,803	30,988	28,393	24,730
Weighted average number of shares outstanding, diluted (shares)	32,381	30,811	30,765	30,688	30,694	30,069	28,461	24,955	31,167	28,564	24,854
Basic earnings per share (USD per share)	$ 0.32	$ 0.53	$ 0.52	$ 0.52	$ 0.53	$ 0.49	$ 0.35	$ 0.35	$ 1.89	$ 1.74	$ 1.36
Diluted earnings per share (USD per share)	$ 0.32	$ 0.53	$ 0.52	$ 0.52	$ 0.52	$ 0.49	$ 0.35	$ 0.35	$ 1.88	$ 1.73	$ 1.36
Restricted Stock
Earnings Per Share Basic and Diluted [Line Items]
Incremental common shares attributable to dilutive effect of share-based payment arrangements (shares)									122	106	67
Employee Stock Option
Earnings Per Share Basic and Diluted [Line Items]
Incremental common shares attributable to dilutive effect of share-based payment arrangements (shares)									57	65	57

SHAREHOLDERS' EQUITY AND EAR130

SHAREHOLDERS' EQUITY AND EARNINGS PER COMMON SHARE - Narrative (Details) - shares shares in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Employee Stock Option
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive securities excluded from computation of earnings per share, amount (shares)	52	200	225

STOCK-BASED COMPENSATION PLA131

STOCK-BASED COMPENSATION PLANS - Narrative (Details) - USD ($)	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Restricted Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total compensation cost	$ 4,600,000	$ 4,700,000	$ 3,800,000
Total recognized tax benefit	$ 1,800,000	$ 1,900,000	$ 1,500,000
Weighted average fair value of stock awards granted (USD per share)	$ 26.81	$ 26.66	$ 24.60
Vesting period	5 years
Total fair value of awards vested	$ 4,400,000	$ 3,400,000	$ 2,000,000
Expected weighted-average period for recognition of unrecognized compensation	2 years
Unrecognized stock-based compensation expense	$ 6,400,000
Employee Stock Option
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total compensation cost	0	0	41,000
Total recognized tax benefit	$ 0	0	16,000
Vesting period	5 years
Contractual life	10 years
Weighted average remaining contractual term for options outstanding	2 years
Total intrinsic value	$ 879,600	210,000	1,200,000
Unrecognized stock-based compensation expense	$ 0	$ 0	$ 0
2013 Equity Compensation Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares authorized under the plan (shares)	1,030,000
Number of shares available for grant under the plan (shares)	611,000
2013 Equity Compensation Plan | Restricted Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares counted against the share limit for each stock granted (percent)	300.00%
2013 Equity Compensation Plan | Employee Stock Option
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares counted against the share limit for each stock granted (percent)	100.00%
2011 Equity Compensation Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares authorized under the plan (shares)	1,400,000
Number of shares available for grant under the plan (shares)	12,000
2011 Equity Compensation Plan | Restricted Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares counted against the share limit for each stock granted (percent)	300.00%
2011 Equity Compensation Plan | Employee Stock Option
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares counted against the share limit for each stock granted (percent)	100.00%

STOCK-BASED COMPENSATION PLA132

STOCK-BASED COMPENSATION PLANS (Details) - $ / shares	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Restricted Stock
Non-vested Stock Awards Outstanding, Number of Shares
Balance at the beginning of the period (in shares)	488,000
Granted (in shares)	211,000
Stock awards vested (in shares)	(181,000)
Forfeited (in shares)	(70,000)
Balance at the end of the period (in shares)	448,000	488,000
Non-vested Stock Awards Outstanding, Weighted-Average Grant Date Fair Value
Balance at the beginning of the period (USD per share)	$ 25.09
Granted (USD per share)	26.81	$ 26.66	$ 24.60
Stock awards vested (USD per share)	24.44
Forfeited (USD per share)	25.48
Balance at the end of the period (USD per share)	$ 26.28	$ 25.09
Employee Stock Option
Stock Options Outstanding, Number of Shares
Balance at the beginning of the period (shares)	265,000
Granted (shares)	0
Exercised (shares)	(151,000)
Forfeited (shares)	0
Expired (shares)	(5,000)
Balance at the end of the period (shares)	109,000	265,000
Stock Options Outstanding, Weighted-Average Exercise Price
Balance at the beginning of the period (USD per share)	$ 21.11
Granted (USD per share)	0
Exercised (USD per share)	24.68
Forfeited (USD per share)	0
Expired (USD per share)	28.49
Balance at the end of the period (USD per share)	$ 15.72	$ 21.11

FAIR VALUE MEASUREMENTS (Detail

FAIR VALUE MEASUREMENTS (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading security	$ 13,229	$ 14,189
Available-for-securities	1,209,537	1,154,457
Other assets	98,457	64,926
Fair Value
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading security	13,229	14,189
Available-for-securities	1,209,537	1,154,457
Loans held for sale	120,673	13,191
Derivative assets	21,617	17,507
Derivative liabilities	24,420	28,181
Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading security	0	0
Available-for-securities	62,284	32,925
Loans held for sale	0	0
Derivative assets	622	45
Derivative liabilities	0	0
Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading security	0	0
Available-for-securities	1,147,253	1,120,824
Loans held for sale	120,673	13,191
Derivative assets	16,157	17,130
Derivative liabilities	24,420	28,181
Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading security	13,229	14,189
Available-for-securities	0	708
Loans held for sale	0	0
Derivative assets	4,838	332
Derivative liabilities	0	0
Recurring | Fair Value
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading security	13,229	14,189
Loans held for sale	120,673	13,191
Derivative assets	21,617	17,507
Other assets	798	0
Derivative liabilities	24,420	28,181
Recurring | Fair Value | Debt securities | Municipal bonds and obligations
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-securities	119,816	104,561
Recurring | Fair Value | Debt securities | Agency collateralized mortgage obligations
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-securities	651,911	833,036
Recurring | Fair Value | Debt securities | Agency residential mortgage-backed securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-securities	228,684	126,829
Recurring | Fair Value | Debt securities | Agency commercial mortgage-backed securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-securities	64,534	0
Recurring | Fair Value | Debt securities | Corporate bonds
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-securities	56,006	41,023
Recurring | Fair Value | Debt securities | Trust preferred securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-securities	11,887	11,900
Recurring | Fair Value | Debt securities | Other bonds and obligations
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-securities	11,158	3,141
Recurring | Fair Value | Marketable equity securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-securities	65,541	33,967
Recurring | Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading security	0	0
Loans held for sale	0	0
Derivative assets	622	45
Other assets	0	0
Derivative liabilities	0	0
Recurring | Level 1 | Debt securities | Municipal bonds and obligations
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-securities	0	0
Recurring | Level 1 | Debt securities | Agency collateralized mortgage obligations
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-securities	0	0
Recurring | Level 1 | Debt securities | Agency residential mortgage-backed securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-securities	0	0
Recurring | Level 1 | Debt securities | Agency commercial mortgage-backed securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-securities	0	0
Recurring | Level 1 | Debt securities | Corporate bonds
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-securities	0	0
Recurring | Level 1 | Debt securities | Trust preferred securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-securities	0	0
Recurring | Level 1 | Debt securities | Other bonds and obligations
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-securities	0	0
Recurring | Level 1 | Marketable equity securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-securities	62,284	32,925
Recurring | Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading security	0	0
Loans held for sale	120,673	13,191
Derivative assets	16,157	17,130
Other assets	0	0
Derivative liabilities	24,420	28,181
Recurring | Level 2 | Debt securities | Municipal bonds and obligations
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-securities	119,816	104,561
Recurring | Level 2 | Debt securities | Agency collateralized mortgage obligations
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-securities	651,911	833,036
Recurring | Level 2 | Debt securities | Agency residential mortgage-backed securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-securities	228,684	126,829
Recurring | Level 2 | Debt securities | Agency commercial mortgage-backed securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-securities	64,534	0
Recurring | Level 2 | Debt securities | Corporate bonds
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-securities	56,006	41,023
Recurring | Level 2 | Debt securities | Trust preferred securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-securities	11,887	11,900
Recurring | Level 2 | Debt securities | Other bonds and obligations
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-securities	11,158	3,141
Recurring | Level 2 | Marketable equity securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-securities	3,257	334
Recurring | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading security	13,229	14,189
Loans held for sale	0	0
Derivative assets	4,838	332
Other assets	798	0
Derivative liabilities	0	0
Recurring | Level 3 | Debt securities | Municipal bonds and obligations
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-securities	0	0
Recurring | Level 3 | Debt securities | Agency collateralized mortgage obligations
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-securities	0	0
Recurring | Level 3 | Debt securities | Agency residential mortgage-backed securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-securities	0	0
Recurring | Level 3 | Debt securities | Agency commercial mortgage-backed securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-securities	0	0
Recurring | Level 3 | Debt securities | Corporate bonds
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-securities	0	0
Recurring | Level 3 | Debt securities | Trust preferred securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-securities	0	0
Recurring | Level 3 | Debt securities | Other bonds and obligations
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-securities	0	0
Recurring | Level 3 | Marketable equity securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-securities	$ 0	$ 708

FAIR VALUE MEASUREMENTS - Narra

FAIR VALUE MEASUREMENTS - Narrative (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2016USD ($)securitytransfer	Dec. 31, 2015USD ($)transfer
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Number of transfers from Level 3 to Level 2 | transfer	1
Value of transfer from Level 3 to Level 2	$ 708
Junior subordinated debentures re-price period	90 days
Loans Held for Sale
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Gain (losses) in fair value of loans held for sale included in earnings	$ 2,200	$ (331)
Trading Security
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Value of transfer from Level 3 to Level 2	$ 0
Number of securities in the portfolio (security) | security	1
Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Number of transfers from Level 3 to Level 2 | transfer		0

FAIR VALUE MEASUREMENTS - Loans

FAIR VALUE MEASUREMENTS - Loans Held for Sale (Details) - Level 2 - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Loans Held for Sale
Aggregate Fair Value	$ 120,673	$ 13,191
Aggregate Unpaid Principal	322	278
Recurring
Loans Held for Sale
Aggregate Fair Value	120,673	13,191
Recurring | Loans Held for Sale
Loans Held for Sale
Aggregate Fair Value	120,673	13,191
Aggregate Unpaid Principal	118,178	12,914
Aggregate Fair Value Less Aggregate Unpaid Principal	$ 2,495	$ 277

FAIR VALUE MEASUREMENTS - Chang

FAIR VALUE MEASUREMENTS - Changes in Level 3 Assets (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Changes in Level 3 assets that were measured at fair value on a recurring basis
Paydown of trading security	$ 4,052	$ 3,010	$ 2,447
Transfers to Level 2	(708)
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Inputs Reconciliation, Transfers out of Level 3	0
Forward Commitments
Liabilities
Balance at the beginning of the period	9	(93)
Sale of AFS Security		0
Unrealized (loss) gain, net recognized in other non-interest income	91	102
Unrealized gain included in accumulated other comprehensive loss	0	0
Balance at the end of the period	100	9	(93)
Unrealized gains (losses) relating to instruments still held at the end of the period	100	9
Forward Commitments | First Choice Bank
Liabilities
Unrealized (loss) gain, net recognized in other non-interest income	0
Capitalized servicing rights
Liabilities
Balance at the beginning of the period	0
Unrealized (loss) gain, net recognized in other non-interest income	102
Balance at the end of the period	798	0
Unrealized gains (losses) relating to instruments still held at the end of the period	102	0
Capitalized servicing rights | First Choice Bank
Liabilities
Unrealized (loss) gain, net recognized in other non-interest income	696
Trading Security
Changes in Level 3 assets that were measured at fair value on a recurring basis
Balance at the beginning of the period	14,189	14,909
Sale of AFS Security		0
Unrealized (loss) gain, net recognized in other non-interest income	(362)	(150)
Unrealized gain included in accumulated other comprehensive loss	0	0
Paydown of trading security	(598)	(570)
Transfers to Level 2	0
Transfers to loans held for sale	0	0
Balance at the end of the period	13,229	14,189	14,909
Liabilities
Unrealized gains (losses) relating to instruments still held at the end of the period	1,843	2,204
Trading Security | First Choice Bank
Changes in Level 3 assets that were measured at fair value on a recurring basis
Amounts acquired from First Choice Bank	0
Securities Available for Sale
Changes in Level 3 assets that were measured at fair value on a recurring basis
Balance at the beginning of the period	708	2,326
Sale of AFS Security		1,327
Unrealized (loss) gain, net recognized in other non-interest income	0	0
Unrealized gain included in accumulated other comprehensive loss	0	(291)
Paydown of trading security	0	0
Transfers to Level 2	(708)
Transfers to loans held for sale	0	0
Balance at the end of the period	0	708	2,326
Liabilities
Unrealized gains (losses) relating to instruments still held at the end of the period	0	(61)
Securities Available for Sale | First Choice Bank
Changes in Level 3 assets that were measured at fair value on a recurring basis
Amounts acquired from First Choice Bank	0
Commitments to lend
Changes in Level 3 assets that were measured at fair value on a recurring basis
Balance at the beginning of the period	323	625
Sale of AFS Security		0
Unrealized (loss) gain, net recognized in other non-interest income	13,563	4,364
Unrealized gain included in accumulated other comprehensive loss	0	0
Paydown of trading security	0	0
Transfers to loans held for sale	(13,048)	(4,666)
Balance at the end of the period	4,738	323	$ 625
Liabilities
Unrealized gains (losses) relating to instruments still held at the end of the period	4,738	$ 323
Commitments to lend | First Choice Bank
Changes in Level 3 assets that were measured at fair value on a recurring basis
Amounts acquired from First Choice Bank	$ 3,900

FAIR VALUE MEASUREMENTS - Signi

FAIR VALUE MEASUREMENTS - Significant Unobservable Inputs for Recurring Assets (Details) - Level 3 - Recurring - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Sep. 30, 2016
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Assets measured on recurring basis	$ 18,865	$ 15,229
Trading Security
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Assets measured on recurring basis	$ 13,229	$ 14,189
Trading Security | Discounted Cash Flow
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Discount Rate (percent)	2.62%	2.49%
Securities Available for Sale
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Assets measured on recurring basis		$ 708
Securities Available for Sale | Pricing Model
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Median Peer Price/ Tangible Book Value Percentage Multiple (percent)		88.52%
Forward Commitments
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Assets measured on recurring basis	$ 100	$ 9
Forward Commitments | Pricing Model
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Origination Costs, per loan	$ 3,692	$ 2,500
Forward Commitments | Historical Trend
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Closing Ratio (percent)	80.36%	92.57%
Commitments to lend
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Assets measured on recurring basis	$ 4,738	$ 323
Commitments to lend | Pricing Model
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Origination Costs, per loan	$ 3,692	$ 2,500
Commitments to lend | Historical Trend
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Closing Ratio (percent)	80.36%	92.57%
Capitalized servicing rights
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Assets measured on recurring basis			$ 798
Capitalized servicing rights | Discounted Cash Flow
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Discount Rate (percent)	11.00%
Constant prepayment rate (percent)	10.40%

FAIR VALUE MEASUREMENTS - Non-r

FAIR VALUE MEASUREMENTS - Non-recurring Fair Value Measurements (Details) - Non-recurring - Level 3 - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Assets, fair value	$ 28,638	$ 18,569
Impaired loans
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Assets, fair value	17,761	11,657
Capitalized servicing rights
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Assets, fair value	10,726	5,187
Other real estate owned
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Assets, fair value	$ 151	$ 1,725

FAIR VALUE MEASUREMENTS - Si139

FAIR VALUE MEASUREMENTS - Significant Unobservable Inputs for Non-recurring Assets (Details) - Non-recurring - Level 3 - USD ($)	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Assets, fair value	$ 28,638,000	$ 18,569,000
Impaired loans
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Assets, fair value	17,761,000	11,657,000
Impaired loans | Fair value of collateral
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Assets, fair value	$ 17,761,000	$ 11,657,000
Impaired loans | Fair value of collateral | Minimum
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Loss severity (percent)	0.00%	0.05%
Appraised value	$ 0	$ 46,300
Impaired loans | Fair value of collateral | Maximum
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Loss severity (percent)	88.70%	29.50%
Appraised value	$ 2,192,000	$ 1,962,000
Impaired loans | Fair value of collateral | Weighted Average
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Loss severity (percent)	9.73%	7.55%
Appraised value	$ 1,026,000	$ 999,700
Capitalized servicing rights
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Assets, fair value	10,726,000	5,187,000
Capitalized servicing rights | Discounted Cash Flow
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Assets, fair value	$ 10,726,000	$ 5,187,000
Capitalized servicing rights | Discounted Cash Flow | Minimum
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Constant prepayment rate (percent)	7.35%	7.17%
Discount Rate (percent)	10.00%	10.00%
Capitalized servicing rights | Discounted Cash Flow | Maximum
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Constant prepayment rate (percent)	14.28%	12.06%
Discount Rate (percent)	14.00%	15.00%
Capitalized servicing rights | Discounted Cash Flow | Weighted Average
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Constant prepayment rate (percent)	10.44%	10.02%
Discount Rate (percent)	11.77%	10.88%
Other real estate owned
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Assets, fair value	$ 151,000	$ 1,725,000
Other real estate owned | Fair value of collateral
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Assets, fair value	151,000	1,725,000
Other real estate owned | Fair value of collateral | Minimum
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Appraised value	101,000	39,000
Other real estate owned | Fair value of collateral | Maximum
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Appraised value	129,000	1,200,000
Other real estate owned | Fair value of collateral | Weighted Average
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Appraised value	$ 122,000	$ 919,900

FAIR VALUE MEASUREMENTS - Summa

FAIR VALUE MEASUREMENTS - Summary of Estimated Fair Values (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Financial Assets
Trading security	$ 13,229	$ 14,189
Securities available for sale, at fair value	1,209,537	1,154,457
Securities held to maturity	337,680	136,904
FHLB stock and restricted equity securities	71,112	71,018
Accrued interest receivable	26,113	20,940
Level 1
Financial Assets
Cash and cash equivalents	113,075	103,562
Trading security	0	0
Securities available for sale, at fair value	62,284	32,925
Securities held to maturity	0	0
FHLB stock and restricted equity securities	0	0
Net loans	0	0
Loans held for sale	0	0
Accrued interest receivable	0	0
Cash surrender value of bank-owned life insurance policies	0	0
Derivative assets	622	45
Assets held for sale	0	0
Financial Liabilities
Total deposits	0	0
Short-term debt	0	0
Long-term FHLB advances	0	0
Subordinated notes	0	0
Derivative liabilities	0	0
Level 2
Financial Assets
Cash and cash equivalents	0	0
Trading security	0	0
Securities available for sale, at fair value	1,147,253	1,120,824
Securities held to maturity	300,806	98,367
FHLB stock and restricted equity securities	71,112	71,018
Net loans	0	0
Loans held for sale	120,673	13,191
Accrued interest receivable	26,113	20,940
Cash surrender value of bank-owned life insurance policies	139,257	125,233
Derivative assets	16,157	17,130
Assets held for sale	322	278
Financial Liabilities
Total deposits	6,624,108	5,582,835
Short-term debt	1,081,996	1,071,044
Long-term FHLB advances	143,151	103,397
Subordinated notes	96,973	93,291
Derivative liabilities	24,420	28,181
Level 3
Financial Assets
Cash and cash equivalents	0	0
Trading security	13,229	14,189
Securities available for sale, at fair value	0	708
Securities held to maturity	36,874	38,537
FHLB stock and restricted equity securities	0	0
Net loans	6,532,745	5,727,570
Loans held for sale	0	0
Accrued interest receivable	0	0
Cash surrender value of bank-owned life insurance policies	0	0
Derivative assets	4,838	332
Assets held for sale	0	0
Financial Liabilities
Total deposits	0	0
Short-term debt	0	0
Long-term FHLB advances	0	0
Subordinated notes	0	0
Derivative liabilities	0	0
Carrying Amount
Financial Assets
Cash and cash equivalents	113,075	103,562
Trading security	13,229	14,189
Securities available for sale, at fair value	1,209,537	1,154,457
Securities held to maturity	334,368	131,652
FHLB stock and restricted equity securities	71,112	71,018
Net loans	6,505,789	5,685,928
Loans held for sale	120,673	13,191
Accrued interest receivable	26,113	20,940
Cash surrender value of bank-owned life insurance policies	139,257	125,233
Derivative assets	21,617	17,507
Assets held for sale	322	278
Financial Liabilities
Total deposits	6,622,092	5,589,135
Short-term debt	1,082,044	1,071,200
Long-term FHLB advances	142,792	103,135
Subordinated notes	89,161	89,812
Derivative liabilities	24,420	28,181
Fair Value
Financial Assets
Cash and cash equivalents	113,075	103,562
Trading security	13,229	14,189
Securities available for sale, at fair value	1,209,537	1,154,457
Securities held to maturity	337,680	136,904
FHLB stock and restricted equity securities	71,112	71,018
Net loans	6,532,745	5,727,570
Loans held for sale	120,673	13,191
Accrued interest receivable	26,113	20,940
Cash surrender value of bank-owned life insurance policies	139,257	125,233
Derivative assets	21,617	17,507
Assets held for sale	322	278
Financial Liabilities
Total deposits	6,624,108	5,582,835
Short-term debt	1,081,996	1,071,044
Long-term FHLB advances	143,151	103,397
Subordinated notes	96,973	93,291
Derivative liabilities	$ 24,420	$ 28,181

CONDENSED FINANCIAL STATEMEN141

CONDENSED FINANCIAL STATEMENTS OF PARENT COMPANY - Condensed Balance Sheets (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Assets
Cash due from Berkshire Bank	$ 71,494	$ 72,918
Securities available for sale, at fair value	1,209,537	1,154,457
Other assets	98,457	64,926
Total assets	9,162,542	7,831,086
Liabilities and Shareholders’ Equity
Short-term debt	1,082,044	1,071,200
Subordinated notes	89,161	88,983
Shareholders’ equity	1,093,298	887,189	$ 709,287	$ 678,062
Total liabilities and shareholders’ equity	9,162,542	7,831,086
Reportable legal entity | Berkshire Hills Bancorp
Condensed balance sheets
Intercompany subordinated notes	35,000
Assets
Cash due from Berkshire Bank	43,018	36,082
Investment in subsidiaries	1,127,706	931,171
Securities available for sale, at fair value	23,651	726
Other assets	1,372	10,179
Total assets	1,195,747	978,158
Liabilities and Shareholders’ Equity
Short-term debt	10,000	0
Subordinated notes	89,161	88,983
Accrued expenses	3,288	1,986
Shareholders’ equity	1,093,298	887,189
Total liabilities and shareholders’ equity	$ 1,195,747	$ 978,158

CONDENSED FINANCIAL STATEMEN142

CONDENSED FINANCIAL STATEMENTS OF PARENT COMPANY - Condensed Statements of Income (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Income:
Total net revenue	$ 75,883	$ 76,912	$ 71,996	$ 73,327	$ 70,996	$ 69,669	$ 69,417	$ 58,055	$ 298,118	$ 268,137	$ 226,461
Interest expense	13,276	12,540	11,577	10,779	9,676	8,481	7,766	7,258	48,172	33,181	28,351
Income tax benefit	362	6,953	5,249	6,220	2,273	1,350	1,144	297	18,784	5,064	11,763
Net income	$ 10,331	$ 16,381	$ 15,957	$ 16,001	$ 16,013	$ 14,701	$ 10,044	$ 8,759	58,670	49,518	33,744
Reportable legal entity | Berkshire Hills Bancorp
Income:
Dividends from subsidiaries									33,000	34,000	12,000
Other									4,072	2,763	2,317
Total net revenue									37,072	36,763	14,317
Interest expense									5,743	5,674	5,847
Non-interest expenses									3,740	3,670	2,286
Total expense									9,483	9,344	8,133
Income before income taxes and equity in undistributed income of subsidiaries									27,589	27,419	6,184
Income tax benefit									(2,123)	(2,518)	(2,330)
Income before equity in undistributed income of subsidiaries									29,712	29,937	8,514
Equity in undistributed income of subsidiaries									28,958	19,581	25,230
Net income									$ 58,670	$ 49,518	$ 33,744

CONDENSED FINANCIAL STATEMEN143

CONDENSED FINANCIAL STATEMENTS OF PARENT COMPANY - Condensed Statements of Cash Flows (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Cash flows from operating activities:
Net income	$ 10,331	$ 16,381	$ 15,957	$ 16,001	$ 16,013	$ 14,701	$ 10,044	$ 8,759	$ 58,670	$ 49,518	$ 33,744
Adjustments to reconcile net income to net cash (used) provided by operating activities:
Other, net									3,309	4,458	(1,803)
Net cash provided by operating activities									98,142	86,288	55,823
Cash flows from investing activities:
Acquisitions, net of cash paid									(48,180)	74,324	423,416
Other, net									(7,616)	(5,105)	(5,384)
Net cash used in investing activities									(207,595)	(454,492)	(369,304)
Cash flows from financing activities:
Payment to repurchase common stock									0	(550)	(2,467)
Common stock cash dividends paid									(24,916)	(21,903)	(18,075)
Net cash provided by financing activities									118,966	400,012	309,696
Net change in cash and cash equivalents									9,513	31,808	(3,785)
Cash and cash equivalents at beginning of year				103,562					103,562
Cash and cash equivalents at end of year	113,075				103,562				113,075	103,562
Reportable legal entity | Berkshire Hills Bancorp
Cash flows from operating activities:
Net income									58,670	49,518	33,744
Adjustments to reconcile net income to net cash (used) provided by operating activities:
Equity in undistributed income of subsidiaries									(28,958)	(19,581)	(25,230)
Other, net									1,988	10,904	3,247
Net cash provided by operating activities									31,700	40,841	11,761
Cash flows from investing activities:
Acquisitions, net of cash paid									0	(3,293)	0
Purchase of securities									(18,016)	(18)	0
Other, net									9,728	0	0
Net cash used in investing activities									(8,288)	(3,311)	0
Cash flows from financing activities:
Proceed from issuance of short term debt									9,349	(9,935)	0
Net proceeds from common stock									3,712	0	0
Net proceeds from reissuance of treasury stock									0	240	1,064
Payment to repurchase common stock									(4,632)	(550)	(2,468)
Common stock cash dividends paid									(24,916)	(21,903)	(18,075)
Other, net									11	167	(1,903)
Net cash provided by financing activities									(16,476)	(31,981)	(21,382)
Net change in cash and cash equivalents									6,936	5,549	(9,621)
Cash and cash equivalents at beginning of year				$ 36,082				$ 30,533	36,082	30,533	40,154
Cash and cash equivalents at end of year	$ 43,018				$ 36,082				$ 43,018	$ 36,082	$ 30,533

QUARTERLY DATA (UNAUDITED) (Det

QUARTERLY DATA (UNAUDITED) (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Quarterly Financial Information Disclosure [Abstract]
Interest and dividend income	$ 72,434	$ 70,511	$ 69,018	$ 68,476	$ 68,424	$ 65,452	$ 60,403	$ 52,751	$ 280,439	$ 247,030	$ 207,042
Interest expense	13,276	12,540	11,577	10,779	9,676	8,481	7,766	7,258	48,172	33,181	28,351
Net interest income	59,158	57,971	57,441	57,697	58,748	56,971	52,637	45,493	232,267	213,849	178,691
Total non-interest income	16,725	18,941	14,555	15,630	12,248	12,698	16,780	12,562	65,851	54,288	47,770
Total net revenue	75,883	76,912	71,996	73,327	70,996	69,669	69,417	58,055	298,118	268,137	226,461
Provision for loan losses	4,100	4,734	4,522	4,006	4,431	4,240	4,204	3,851	17,362	16,726	14,968
Non-interest expense	61,090	48,844	46,268	47,100	48,279	49,378	54,025	45,148	203,302	196,829	165,986
Income before income taxes	10,693	23,334	21,206	22,221	18,286	16,051	11,188	9,056	77,454	54,582	45,507
Income tax expense	362	6,953	5,249	6,220	2,273	1,350	1,144	297	18,784	5,064	11,763
Net income	$ 10,331	$ 16,381	$ 15,957	$ 16,001	$ 16,013	$ 14,701	$ 10,044	$ 8,759	$ 58,670	$ 49,518	$ 33,744
Basic earnings per share (USD per share)	$ 0.32	$ 0.53	$ 0.52	$ 0.52	$ 0.53	$ 0.49	$ 0.35	$ 0.35	$ 1.89	$ 1.74	$ 1.36
Diluted earnings per share (USD per share)	$ 0.32	$ 0.53	$ 0.52	$ 0.52	$ 0.52	$ 0.49	$ 0.35	$ 0.35	$ 1.88	$ 1.73	$ 1.36
Weighted average common shares outstanding:
Basic (shares)	32,185	30,621	30,605	30,511	30,500	29,893	28,301	24,803	30,988	28,393	24,730
Diluted (shares)	32,381	30,811	30,765	30,688	30,694	30,069	28,461	24,955	31,167	28,564	24,854

NET INTEREST INCOME AFTER PR145

NET INTEREST INCOME AFTER PROVISION FOR LOAN LOSSES (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Banking and Thrift, Interest [Abstract]
Net interest income	$ 59,158	$ 57,971	$ 57,441	$ 57,697	$ 58,748	$ 56,971	$ 52,637	$ 45,493	$ 232,267	$ 213,849	$ 178,691
Provision for loan losses	4,100	4,734	4,522	4,006	4,431	4,240	4,204	3,851	17,362	16,726	14,968
Net interest income after provision for loan losses									214,905	197,123	163,723
Total non-interest income	16,725	18,941	14,555	15,630	12,248	12,698	16,780	12,562	65,851	54,288	47,770
Total non-interest expense	61,090	48,844	46,268	47,100	48,279	49,378	54,025	45,148	203,302	196,829	165,986
Income from continuing operations before income taxes	10,693	23,334	21,206	22,221	18,286	16,051	11,188	9,056	77,454	54,582	45,507
Income tax expense	362	6,953	5,249	6,220	2,273	1,350	1,144	297	18,784	5,064	11,763
Net income	$ 10,331	$ 16,381	$ 15,957	$ 16,001	$ 16,013	$ 14,701	$ 10,044	$ 8,759	$ 58,670	$ 49,518	$ 33,744

SUBSEQUENT EVENTS (Details)

SUBSEQUENT EVENTS (Details) - USD ($) $ in Thousands	Feb. 07, 2017	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Subsequent Event [Line Items]
Derivative, notional amount		$ 2,199,862				$ 1,366,667				$ 2,199,862	$ 1,366,667
Interest expense		13,276	$ 12,540	$ 11,577	$ 10,779	$ 9,676	$ 8,481	$ 7,766	$ 7,258	48,172	33,181	$ 28,351
FHLBB borrowings | Interest Rate Swap | Cash Flow Hedging
Subsequent Event [Line Items]
Derivative, notional amount		$ 300,000								300,000
Interest expense										$ 3,981	$ 0
Subsequent Event | Accumulated Net Gain (Loss) from Cash Flow Hedges | Reclassification out of Accumulated Other Comprehensive Income
Subsequent Event [Line Items]
Interest expense	$ 6,600