Berkshire Hills Bancorp (BHLB) 10-Q 10 May 17 2017 Q1 Quarterly report Financial data

Document and Entity Information

Document and Entity Information - shares	3 Months Ended
	Mar. 31, 2017	May 05, 2017
Document and Entity Information
Entity Registrant Name	BERKSHIRE HILLS BANCORP INC
Entity Central Index Key	1,108,134
Document Type	10-Q
Document Period End Date	Mar. 31, 2017
Amendment Flag	false
Current Fiscal Year End Date	--12-31
Entity Current Reporting Status	Yes
Entity Filer Category	Large Accelerated Filer
Entity Common Stock, Shares Outstanding		35,789,262
Document Fiscal Year Focus	2,017
Document Fiscal Period Focus	Q1

CONSOLIDATED BALANCE SHEETS

CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Mar. 31, 2017	Dec. 31, 2016
Assets
Cash and due from banks	$ 67,580	$ 71,494
Short-term investments	25,763	41,581
Total cash and cash equivalents	93,343	113,075
Trading security, at fair value	12,966	13,229
Securities available for sale, at fair value	1,293,683	1,209,537
Securities held to maturity (fair values of $334,866 and $337,680)	331,179	334,368
Federal Home Loan Bank stock and other restricted securities	76,407	71,112
Total securities	1,714,235	1,628,246
Loans held for sale, at fair value	89,741	120,673
Commercial real estate	2,673,363	2,616,438
Commercial and industrial loans	1,146,125	1,062,038
Residential mortgages	1,850,684	1,893,131
Consumer loans	985,761	978,180
Total loans	6,655,933	6,549,787
Less: Allowance for loan losses	(45,804)	(43,998)
Net loans	6,610,129	6,505,789
Premises and equipment, net	95,203	93,215
Other real estate owned	71	151
Goodwill	403,106	403,106
Other intangible assets	18,644	19,445
Cash surrender value of bank-owned life insurance policies	139,914	139,257
Deferred tax assets, net	42,403	41,128
Other assets	91,119	98,457
Total assets	9,297,908	9,162,542
Liabilities
Demand deposits	1,194,633	1,278,875
NOW deposits	562,743	570,583
Money market deposits	1,819,403	1,781,605
Savings deposits	660,007	657,486
Time deposits	2,419,268	2,333,543
Total deposits	6,656,054	6,622,092
Short-term debt	1,136,801	1,082,044
Long-term Federal Home Loan Bank advances	157,920	142,792
Subordinated borrowings	89,206	89,161
Total borrowings	1,383,927	1,313,997
Other liabilities	158,374	133,155
Total liabilities	8,198,355	8,069,244
Shareholders’ equity
Common stock ($.01 par value; 50,000,000 shares authorized and 36,732,129 shares issued and 35,728,523 shares outstanding in 2017; 36,732,129 shares issued and 35,672,817 shares outstanding in 2016)	366	366
Additional paid-in capital	899,831	898,989
Unearned compensation	(7,971)	(6,374)
Retained earnings	225,307	217,494
Accumulated other comprehensive income	7,858	9,766
Treasury stock, at cost (1,003,606 shares in 2017 and 1,059,312 shares in 2016)	(25,838)	(26,943)
Total shareholders’ equity	1,099,553	1,093,298
Total liabilities and shareholders’ equity	$ 9,297,908	$ 9,162,542

CONSOLIDATED BALANCE SHEETS (Pa

CONSOLIDATED BALANCE SHEETS (Parenthetical) - USD ($) $ in Thousands	Mar. 31, 2017	Dec. 31, 2016
Statement of Financial Position [Abstract]
Securities held to maturity, fair value	$ 334,866	$ 337,680
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01
Common stock, shares authorized (in shares)	50,000,000	50,000,000
Common stock, shares issued (in shares)	36,732,129	36,732,129
Common stock, shares outstanding (in shares)	35,728,523	35,672,817
Treasury stock (in shares)	1,003,606	1,059,312

CONSOLIDATED STATEMENTS OF INCO

CONSOLIDATED STATEMENTS OF INCOME - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Interest and dividend income
Loans	$ 68,943	$ 58,442
Securities and other	11,766	10,034
Total interest and dividend income	80,709	68,476
Interest expense
Deposits	9,098	7,159
Borrowings	4,725	3,620
Total interest expense	13,823	10,779
Net interest income	66,886	57,697
Non-interest income
Mortgage banking originations	12,678	821
Loan related income	4,179	3,046
Deposit related fees	6,204	6,109
Insurance commissions and fees	3,136	2,893
Wealth management fees	2,526	2,502
Total fee income	28,723	15,371
Other, net	93	223
Gain on sale of securities, net	12,570	36
Loss on termination of hedges	(6,629)	0
Total non-interest income	34,757	15,630
Total net revenue	101,643	73,327
Provision for loan losses	5,095	4,006
Non-interest expense
Compensation and benefits	36,119	25,714
Occupancy and equipment	9,026	6,690
Technology and communications	6,087	4,857
Marketing and promotion	1,999	673
Professional services	2,451	1,280
FDIC premiums and assessments	1,298	1,233
Other real estate owned and foreclosures	28	263
Amortization of intangible assets	801	819
Acquisition, restructuring and conversion related expenses	11,682	780
Other	4,835	4,791
Total non-interest expense	74,326	47,100
Income before income taxes	22,222	22,221
Income tax expense	6,762	6,220
Net income	$ 15,460	$ 16,001
Earnings per share:
Basic (in dollars per share)	$ 0.44	$ 0.52
Diluted (in dollars per share)	$ 0.44	$ 0.52
Weighted average common shares outstanding:
Basic (in shares)	35,280	30,511
Diluted (in shares)	35,452	30,688

CONSOLIDATED STATEMENTS OF COMP

CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Statement of Comprehensive Income [Abstract]
Net income	$ 15,460	$ 16,001
Other comprehensive income, before tax:
Changes in unrealized gain on securities available-for-sale	(9,433)	17,706
Changes in unrealized loss on cash flow hedging derivatives	6,573	(4,506)
Income taxes related to other comprehensive income:
Changes in unrealized gain on securities available-for-sale	3,540	(6,856)
Changes in unrealized loss on cash flow hedging derivatives	(2,588)	1,808
Total other comprehensive (loss) income	(1,908)	8,152
Total comprehensive income	$ 13,552	$ 24,153

CONSOLIDATED STATEMENTS OF CHAN

CONSOLIDATED STATEMENTS OF CHANGES IN SHAREHOLDERS' EQUITY - USD ($) shares in Thousands, $ in Thousands		Total	Common stock	Additional paid-in capital	Unearned compensation	Retained earnings	Accumulated other comprehensive (loss) income	Treasury stock
Balance (in shares) at Dec. 31, 2015			30,974
Balance at Beginning of Period at Dec. 31, 2015		$ 887,189	$ 322	$ 742,619	$ (6,997)	$ 183,885	$ (3,305)	$ (29,335)
Comprehensive income:
Net income		16,001				16,001
Other comprehensive income (loss)		8,152					8,152
Total comprehensive income		24,153
Cash dividends declared		(6,216)				(6,216)
Treasury stock adjustment	[1]	0		1,645				(1,645)
Forfeited shares (in shares)			(22)
Forfeited shares		0		68	526			(594)
Exercise of stock options (in shares)			2
Exercise of stock options		25				(17)		42
Restricted stock grants (in shares)			105
Restricted stock grants		0		312	(2,931)			2,619
Stock-based compensation		1,156			1,156
Net tax benefit related to stock-based compensation		99		99
Other, net (in shares)			(20)
Other, net		(569)						(569)
Balance (in shares) at Mar. 31, 2016			31,039
Balance at End of Period at Mar. 31, 2016		905,837	$ 322	744,743	(8,246)	193,653	4,847	(29,482)
Balance (in shares) at Dec. 31, 2016			35,673
Balance at Beginning of Period at Dec. 31, 2016		1,093,298	$ 366	898,989	(6,374)	217,494	9,766	(26,943)
Comprehensive income:
Net income		15,460				15,460
Other comprehensive income (loss)		(1,908)					(1,908)
Total comprehensive income		13,552
Cash dividends declared		(7,506)				(7,506)
Forfeited shares (in shares)			(2)
Forfeited shares		0		20	60			(80)
Exercise of stock options (in shares)			6
Exercise of stock options		81				(71)		152
Restricted stock grants (in shares)			81
Restricted stock grants		0		807	(2,859)			2,052
Stock-based compensation		1,202			1,202
Other, net (in shares)			(29)
Other, net		(1,074)		15		(70)		(1,019)
Balance (in shares) at Mar. 31, 2017			35,729
Balance at End of Period at Mar. 31, 2017		$ 1,099,553	$ 366	$ 899,831	$ (7,971)	$ 225,307	$ 7,858	$ (25,838)
[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 SHAREHOLDERS' EQUITY (Parenthetical) - $ / shares	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Statement of Stockholders' Equity [Abstract]
Treasury stock purchased (in shares)		168,931
Cash dividends declared (in dollars per share)	$ 0.21	$ 0.20

CONSOLIDATED STATEMENTS OF CASH

CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Cash flows from operating activities:
Net income	$ 15,460	$ 16,001
Adjustments to reconcile net income to net cash provided by operating activities:
Provision for loan losses	5,095	4,006
Net amortization of securities	626	725
Change in unamortized net loan costs and premiums	1,227	72
Premises and equipment depreciation and amortization expense	2,467	2,155
Stock-based compensation expense	1,202	1,156
Accretion of purchase accounting entries, net	(4,597)	(2,469)
Amortization of other intangibles	801	819
Excess tax loss from stock-based payment arrangements	0	(99)
Income from cash surrender value of bank-owned life insurance policies	(967)	(1,053)
Gain on sales of securities, net	(12,570)	(35)
Net decrease (increase) in loans held for sale	30,932	(2,728)
Loss on disposition of assets	662	0
Loss on sale of real estate	13	54
Amortization of interest in tax-advantaged projects	1,329	991
Net change in other	13,536	(10,285)
Net cash provided by operating activities	55,216	9,310
Cash flows from investing activities:
Net decrease in trading security	157	148
Proceeds from sales of securities available for sale	26,085	7,000
Proceeds from maturities, calls and prepayments of securities available for sale	44,794	40,832
Purchases of securities available for sale	(151,731)	(46,442)
Proceeds from maturities, calls and prepayments of securities held to maturity	3,791	3,439
Purchases of securities held to maturity	(1,037)	(52)
Net change in loans	(82,329)	17,069
Proceeds from surrender of bank-owned life insurance	310	150
Proceeds from sale of Federal Home Loan Bank stock	1,636	11,495
Purchase of Federal Home Loan Bank stock	(6,931)	(739)
Net investment in limited partnership tax credits	(354)	(1,803)
Proceeds from the sale of premises and equipment	0	168
Purchase of premises and equipment, net	(5,070)	(2,383)
Proceeds from sale of other real estate	102	446
Net cash (used) provided by investing activities	(170,577)	29,328
Cash flows from financing activities:
Net increase in deposits	34,757	25,961
Proceeds from Federal Home Loan Bank advances and other borrowings	2,291,600	2,119,500
Repayments of Federal Home Loan Bank advances and other borrowings	(2,221,603)	(2,212,752)
Exercise of stock options	81	25
Excess tax loss from stock-based payment arrangements	0	99
Common stock cash dividends paid	(7,506)	(6,216)
Acquisition contingent consideration paid	(1,700)	0
Net cash provided (used) by financing activities	95,629	(73,383)
Net change in cash and cash equivalents	(19,732)	(34,745)
Cash and cash equivalents at beginning of year	113,075	103,562
Cash and cash equivalents at end of year	93,343	68,817
Supplemental cash flow information:
Interest paid on deposits	9,253	6,967
Interest paid on borrowed funds	5,084	3,508
Income taxes paid (refunded), net	(3,685)	(370)
Other non-cash changes:
Other net comprehensive (loss) income	(1,908)	8,152
Real estate owned acquired in settlement of loans	$ 35	$ 215

BASIS OF PRESENTATION

BASIS OF PRESENTATION	3 Months Ended
	Mar. 31, 2017
Organization, Consolidation and Presentation of Financial Statements [Abstract]
BASIS OF PRESENTATION	BASIS OF PRESENTATION 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, Massachusetts, and Berkshire Insurance Group, Inc. 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. All material wholly-owned and majority-owned subsidiaries are consolidated unless GAAP requires otherwise. The Company has evaluated subsequent events for potential recognition and/or disclosure through the date these consolidated financial statements were issued. In addition, these interim financial statements have been prepared in accordance with the instructions to Form 10-Q and Article 10 of Regulation S-X, and accordingly, certain information and footnote disclosures normally included in financial statements prepared according to GAAP have been omitted. The results for any interim period are not necessarily indicative of results for the full year. These consolidated financial statements should be read in conjunction with the audited financial statements and note disclosures for Berkshire Hills Bancorp, Inc. previously filed with the Securities and Exchange Commission in the Company’s Annual Report on Form 10-K for the year ended December 31, 2016. In management’s opinion, all adjustment’s necessary for a fair statement are reflected in the interim periods presented. Reclassifications Certain items in prior financial statements have been reclassified to conform to the current presentation. Recently Adopted Accounting Principles Effective January 1, 2017, the following new accounting guidance was adopted by the Company: • ASU No. 2016-05, Effect of Derivative Contract Novations on Existing Hedge Accounting Relationships; • ASU No. 2016-06, Contingent Put and Call Options in Debt Instruments; • ASU No. 2016-07, Simplifying the Transition to the Equity Method of Accounting • ASU No. 2016-15, Classification of Certain Cash Receipts and Cash Payments; and • ASU No. 2017-08, Premium Amortization on Purchased Callable Debt Securities The adoption of these accounting standards did not have a material impact on the Company's financial statements. 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, ASU 2016-12, and ASU 2016-20 are the same as those provided by ASU 2015-14. While the assessment of the provisions of ASU No. 2014-09 is not complete, the timing of the Company’s revenue recognition is not expected to materially change. Certain implementation issues relevant to the industry are still pending resolution; however our preliminary conclusions reached as to the application of the new guidance are not expected to be significantly affected. We will continue to evaluate any impact as additional guidance is issued and as our internal assessment progresses. 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 available-for-sale debt securities in combination with other deferred tax assets. The guidance provides an election to subsequently measure certain non-marketable 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. While the Company has performed a preliminary evaluation of the provisions of ASU No. 2016-01, the effect of the adoption will depend on the Company’s portfolio at the time of transition. The Company will continue to closely monitor developments and additional guidance. 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. The Company continues to evaluate the extent of potential impact the new guidance will have 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 in the process of identifying and implementing required changes to loan loss estimation models and processes and evaluating the impact of this new accounting guidance, which at the date of adoption is expected to increase the allowance for credit losses with a resulting negative adjustment to retained earnings.

TRADING SECURITY

TRADING SECURITY	3 Months Ended
	Mar. 31, 2017
Trading Securities [Abstract]
TRADING SECURITY	TRADING SECURITY The Company holds a tax advantaged economic development bond accounted for at fair value. The security had an amortized cost of $11.2 million and $11.4 million , and a fair value of $13.0 million and $13.2 million , at March 31, 2017 and December 31, 2016 , respectively. As discussed further in Note 11 - Derivative Financial Instruments and Hedging Activities, the Company 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 were no other securities in the trading portfolio at March 31, 2017

SECURITIES AVAILABLE FOR SALE A

SECURITIES AVAILABLE FOR SALE AND HELD TO MATURITY	3 Months Ended
	Mar. 31, 2017
Investments, Debt and Equity Securities [Abstract]
SECURITIES AVAILABLE FOR SALE AND HELD TO MATURITY	SECURITIES AVAILABLE FOR SALE AND HELD TO MATURITY The following is a summary of securities available for sale and held to maturity: (In thousands) Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Fair Value March 31, 2017 Securities available for sale Debt securities: Municipal bonds and obligations $ 118,170 $ 3,391 $ (970 ) $ 120,591 Agency collateralized mortgage obligations 752,638 2,863 (3,424 ) 752,077 Agency mortgage-backed securities 232,888 507 (2,244 ) 231,151 Agency commercial mortgage-backed securities 65,003 83 (1,709 ) 63,377 Corporate bonds 60,331 632 (467 ) 60,496 Trust preferred securities 11,380 408 — 11,788 Other bonds and obligations 10,662 211 (11 ) 10,862 Total debt securities 1,251,072 8,095 (8,825 ) 1,250,342 Marketable equity securities 35,823 8,433 (915 ) 43,341 Total securities available for sale 1,286,895 16,528 (9,740 ) 1,293,683 Securities held to maturity Municipal bonds and obligations 202,696 4,108 (2,299 ) 204,505 Agency collateralized mortgage obligations 75,311 1,438 (420 ) 76,329 Agency mortgage-backed securities 8,762 — (257 ) 8,505 Agency commercial mortgage-backed securities 10,529 — (441 ) 10,088 Tax advantaged economic development bonds 33,557 1,558 — 35,115 Other bonds and obligations 324 — — 324 Total securities held to maturity 331,179 7,104 (3,417 ) 334,866 Total $ 1,618,074 $ 23,632 $ (13,157 ) $ 1,628,549 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 The amortized cost and estimated fair value of available for sale (“AFS”) and held to maturity (“HTM”) securities, segregated by contractual maturity at March 31, 2017 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 Amortized Fair Amortized Fair (In thousands) Cost Value Cost Value Within 1 year $ 279 $ 283 $ 1,252 $ 1,254 Over 1 year to 5 years 25,458 25,978 19,126 19,885 Over 5 years to 10 years 53,862 54,934 16,244 16,706 Over 10 years 120,944 122,542 199,955 202,099 Total bonds and obligations 200,543 203,737 236,577 239,944 Marketable equity securities 35,823 43,341 — — Mortgage-backed securities 1,050,529 1,046,605 94,602 94,922 Total $ 1,286,895 $ 1,293,683 $ 331,179 $ 334,866 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 Gross Gross Gross Unrealized Fair Unrealized Fair Unrealized Fair (In thousands) Losses Value Losses Value Losses Value March 31, 2017 Securities available for sale Debt securities: Municipal bonds and obligations $ 970 $ 12,175 $ — $ — $ 970 $ 12,175 Agency collateralized mortgage obligations 3,424 420,178 — — 3,424 420,178 Agency mortgage-backed securities 2,216 133,529 28 1,480 2,244 135,009 Agency commercial mortgage-backed securities 1,709 53,156 — — 1,709 53,156 Corporate bonds 4 4,461 463 16,571 467 21,032 Other bonds and obligations 11 3,018 — — 11 3,018 Total debt securities 8,334 626,517 491 18,051 8,825 644,568 Marketable equity securities 48 1,330 867 6,139 915 7,469 Total securities available for sale 8,382 627,847 1,358 24,190 9,740 652,037 Securities held to maturity Municipal bonds and obligations 2,299 69,480 — — 2,299 $ 69,480 Agency collateralized mortgage obligations 420 14,422 — — 420 $ 14,422 Agency mortgage-backed securities 257 8,505 — — 257 $ 8,505 Agency commercial mortgage-backed securities 441 10,088 — — 441 $ 10,088 Total securities held to maturity 3,417 102,495 — — 3,417 102,495 Total $ 11,799 $ 730,342 $ 1,358 $ 24,190 $ 13,157 $ 754,532 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-backed 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-backed 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 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 March 31, 2017 , 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 historically 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 were not other-than-temporarily impaired at March 31, 2017 : AFS municipal bonds and obligations At March 31, 2017, 9 of the total 271 securities in the Company’s portfolio of AFS municipal bonds and obligations were in unrealized loss positions. Aggregate unrealized losses represented 7.4% 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 the bonds in this portfolio carry minimal risk of default and the Company is appropriately compensated for that risk. There were no material underlying credit downgrades during the quarter. All securities are performing. AFS collateralized mortgage obligations At March 31, 2017 , 77 out of the total 225 securities in the Company’s portfolios of AFS collateralized mortgage obligations were in unrealized loss positions. Aggregate unrealized losses represented 0.8% 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 mortgage obligations. The securities are investment grade rated and there were no material underlying credit downgrades during the quarter. All securities are performing. AFS mortgage-backed securities At March 31, 2017 , 42 out of the total 102 securities in the Company’s portfolios of AFS mortgage-backed securities were in unrealized loss positions. Aggregate unrealized losses represented 2.1% of the amortized cost of securities in unrealized loss positions. The FNMA, FHLMC, and GNMA guarantee the contractual cash flows of all of the Company’s mortgage-backed securities. The securities are investment grade rated and there were no material underlying credit downgrades during the quarter. All securities are performing. AFS corporate bonds At March 31, 2017 , 2 out of 12 securities in the Company’s portfolio of AFS corporate bonds were in an unrealized loss position. The aggregate unrealized loss represents 2.2% of the amortized cost of bonds in unrealized loss positions. The Company reviews the financial strength of all of these bonds and has concluded that the amortized cost remains supported by the expected future cash flows of these securities. At March 31, 2017 , $463 thousand of the total unrealized losses was attributable to a $17.0 million investment. The Company evaluated this security, with a Level 2 fair value of $16.6 million , for potential other-than-temporary impairment (“OTTI”) at March 31, 2017 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 other bonds and obligations At March 31, 2017, 5 of the 9 securities in the Company’s portfolio of other bonds and obligations were in unrealized loss positions. Aggregate unrealized losses represented 0.4% 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 the quarter. All securities are performing. HTM Municipal bonds and obligations At March 31, 2017, 53 of the 195 securities in the Company’s portfolio of other bonds and obligations were in unrealized loss positions. Aggregate unrealized losses represented 3.2% 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 March 31, 2017, 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 2.9% of the amortized cost of securities in unrealized loss positions. The FNMA, FHLMC, and 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 the quarter. All securities are performing. HTM mortgage-backed securities At March 31, 2017, 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 3.6% of the amortized cost of securities in unrealized loss positions. The FNMA, FHLMC, and GNMA guarantee 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 the quarter. 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 March 31, 2017 , 5 out of the total 19 securities in the Company’s portfolio of marketable equity securities were in an unrealized loss position. The unrealized loss represented 10.9% of the amortized cost of the securities. The Company has the ability and intent to hold the securities until recovery of their cost basis and does not consider the securities other-than-temporarily impaired at March 31, 2017 . 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	3 Months Ended
	Mar. 31, 2017
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 loan classes. 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. 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. Business activity and acquired loans are serviced, managed, and accounted for under the Company's same control environment. The following is a summary of total loans: March 31, 2017 December 31, 2016 (in thousands) Business Acquired Total Business Acquired Total Commercial real estate: Construction $ 281,134 $ 24,976 $ 306,110 $ 253,302 $ 34,207 $ 287,509 Single and multi-family 339,259 105,673 444,932 191,819 125,672 317,491 Other commercial real estate 1,405,948 516,373 1,922,321 1,481,223 530,215 2,011,438 Total commercial real estate 2,026,341 647,022 2,673,363 1,926,344 690,094 2,616,438 Commercial and industrial loans: Asset based lending 351,992 — 351,992 321,270 — 321,270 Other commercial and industrial loans 664,783 129,350 794,133 586,832 153,936 740,768 Total commercial and industrial loans 1,016,775 129,350 1,146,125 908,102 153,936 1,062,038 Total commercial loans 3,043,116 776,372 3,819,488 2,834,446 844,030 3,678,476 Residential mortgages: 1-4 family 1,548,762 289,665 1,838,427 1,583,794 297,355 1,881,149 Construction 11,545 712 12,257 11,178 804 11,982 Total residential mortgages 1,560,307 290,377 1,850,684 1,594,972 298,159 1,893,131 Consumer loans: Home equity 312,639 77,308 389,947 313,521 80,279 393,800 Auto and other 497,156 98,658 595,814 478,368 106,012 584,380 Total consumer loans 809,795 175,966 985,761 791,889 186,291 978,180 Total loans $ 5,413,218 $ 1,242,715 $ 6,655,933 $ 5,221,307 $ 1,328,480 $ 6,549,787 The carrying amount of the acquired loans at March 31, 2017 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 $44.3 million (and a note balance of $79.3 million). These loans are evaluated for impairment through the periodic reforecasting of expected cash flows. Loans considered not impaired at acquisition date had a carrying amount of $1.2 billion . At December 31, 2016, acquired loans maintained a carrying value of $1.3 billion and purchased credit-impaired loans totaled $46.8 million (note balance of $86.6 million). Loans considered not impaired at acquisition date had a carrying amount of $1.3 billion . The following table summarizes 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: Three Months Ended March 31, (in thousands) 2017 2016 Balance at beginning of period $ 8,738 $ 6,925 Reclassification from nonaccretable difference for loans with improved cash flows 418 896 Change in cash flows that do not affect nonaccretable difference (747 ) — Reclassification to TDR — (185 ) Accretion (1,046 ) (1,172 ) Balance at end of period $ 7,363 $ 6,464 The following is a summary of past due loans at March 31, 2017 and December 31, 2016: Business Activities Loans (in thousands) 30-59 Days 60-89 Days 90 Total Past Current Total Loans Past Due > March 31, 2017 Commercial real estate: Construction $ — $ — $ — $ — $ 281,134 $ 281,134 $ — Single and multi-family 118 — 513 631 338,628 339,259 — Other commercial real estate 2,080 1,136 6,608 9,824 1,396,124 1,405,948 641 Total 2,198 1,136 7,121 10,455 2,015,886 2,026,341 641 Commercial and industrial loans: Asset based lending — — — — 351,992 351,992 — Other commercial and industrial loans 1,583 1,405 7,124 10,112 654,671 664,783 6 Total 1,583 1,405 7,124 10,112 1,006,663 1,016,775 6 Residential mortgages: 1-4 family 2,125 66 3,830 6,021 1,542,741 1,548,762 1,274 Construction — — — — 11,545 11,545 — Total 2,125 66 3,830 6,021 1,554,286 1,560,307 1,274 Consumer loans: Home equity 581 50 2,485 3,116 309,523 312,639 85 Auto and other 1,624 428 1,195 3,247 493,909 497,156 22 Total 2,205 478 3,680 6,363 803,432 809,795 107 Total $ 8,111 $ 3,085 $ 21,755 $ 32,951 $ 5,380,267 $ 5,413,218 $ 2,028 Business Activities Loans (in thousands) 30-59 Days 60-89 Days 90 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 Other 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 Acquired Loans (in thousands) 30-59 Days 60-89 Days 90 Total Past Acquired Total Loans Past Due > March 31, 2017 Commercial real estate: Construction $ — $ — $ — $ — $ — $ 24,976 $ — Single and multi-family 81 — 558 639 3,381 105,673 — Other commercial real estate 463 — 782 1,245 27,123 516,373 102 Total 544 — 1,340 1,884 30,504 647,022 102 Commercial and industrial loans: Asset based lending — — — — — — — Other commercial and industrial loans 325 128 1,228 1,681 5,282 129,350 18 Total 325 128 1,228 1,681 5,282 129,350 18 Residential mortgages: 1-4 family 674 84 1,416 2,174 7,269 289,665 — Construction — — — — — 712 — Total 674 84 1,416 2,174 7,269 290,377 — Consumer loans: Home equity 80 396 1,353 1,829 893 77,308 514 Auto and other 431 239 1,464 2,134 383 98,658 767 Total 511 635 2,817 3,963 1,276 175,966 1,281 Total $ 2,054 $ 847 $ 6,801 $ 9,702 $ 44,331 $ 1,242,715 $ 1,401 Acquired Loans (in thousands) 30-59 Days 60-89 Days 90 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 — Other 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 The following is summary information pertaining to non-accrual loans at March 31, 2017 and December 31, 2016: March 31, 2017 December 31, 2016 (in thousands) Business Acquired Total Business Acquired Total Commercial real estate: Construction $ — $ — $ — $ — $ — $ — Single and multi-family 513 521 1,034 469 437 906 Other commercial real estate 5,967 717 6,684 4,212 765 4,977 Total 6,480 1,238 7,718 4,681 1,202 5,883 Commercial and industrial loans: Other commercial and industrial loans 7,118 1,127 8,245 6,285 1,155 7,440 Total 7,118 1,127 8,245 6,285 1,155 7,440 Residential mortgages: 1-4 family 2,556 1,402 3,958 2,223 1,572 3,795 Construction — — — — — — Total 2,556 1,402 3,958 2,223 1,572 3,795 Consumer loans: Home equity 2,400 838 3,238 2,675 517 3,192 Auto and other 1,173 697 1,870 952 895 1,847 Total 3,573 1,535 5,108 3,627 1,412 5,039 Total non-accrual loans $ 19,727 $ 5,302 $ 25,029 $ 16,816 $ 5,341 $ 22,157 _______________________________________ (1) At quarter end March 31, 2017 , acquired credit impaired loans accounted for $98 thousand of loans greater than 90 days past due that are not presented in the above table. (2) At December 31, 2016, acquired credit impaired loans accounted for $83 thousand of loans greater than 90 days past due that are not presented in the above table. Loans evaluated for impairment as of March 31, 2017 and December 31, 2016 were as follows: Business Activities Loans (in thousands) Commercial Commercial and Residential Consumer Total March 31, 2017 Loans receivable: Balance at end of period Individually evaluated for impairment $ 29,208 $ 6,460 $ 2,798 $ 2,380 $ 40,846 Collectively evaluated for impairment 1,997,133 1,010,315 1,557,509 807,415 5,372,372 Total $ 2,026,341 $ 1,016,775 $ 1,560,307 $ 809,795 $ 5,413,218 Business Activities Loans (in thousands) Commercial Commercial and Residential Consumer Total December 31, 2016 Loans receivable: Balance at end of year Individually evaluated for impairment $ 25,549 $ 5,705 $ 2,775 $ 2,703 $ 36,732 Collectively evaluated for impairment 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 Acquired Loans (in thousands) Commercial Commercial and Residential Consumer Total March 31, 2017 Loans receivable: Balance at end of Period Individually evaluated for impairment $ 3,325 $ 654 $ 494 $ 741 $ 5,214 Purchased credit-impaired loans 30,504 5,282 7,269 1,276 44,331 Collectively evaluated for impairment 613,193 123,414 282,614 173,949 1,193,170 Total $ 647,022 $ 129,350 $ 290,377 $ 175,966 $ 1,242,715 Acquired Loans (in thousands) Commercial Commercial and Residential Consumer Total December 31, 2016 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 for impairment 651,018 149,932 290,568 184,541 1,276,059 Total $ 690,094 $ 153,936 $ 298,159 $ 186,291 $ 1,328,480 The following is a summary of impaired loans at March 31, 2017 and December 31, 2016: Business Activities Loans March 31, 2017 (in thousands) Recorded Investment Unpaid Principal Related Allowance With no related allowance: Commercial real estate - construction $ — $ — $ — Commercial real estate - single and multifamily 151 151 — Other commercial real estate loans 20,710 20,710 — Other commercial and industrial loans 1,051 1,051 — Residential mortgages - 1-4 family 1,797 1,797 — Consumer - home equity 1,232 1,232 — Consumer - other — — — With an allowance recorded: Commercial real estate - construction $ — $ — $ — Commercial real estate - single and multifamily 181 182 1 Other commercial real estate loans 8,085 8,165 80 Other commercial and industrial loans 5,286 5,409 123 Residential mortgages - 1-4 family 865 1,001 136 Consumer - home equity 1,098 1,148 50 Consumer - other — — — Total Commercial real estate $ 29,127 $ 29,208 $ 81 Commercial and industrial loans 6,337 6,460 123 Residential mortgages 2,662 2,798 136 Consumer 2,330 2,380 50 Total impaired loans $ 40,456 $ 40,846 $ 390 Business Activities Loans December 31, 2016 (in thousands) Recorded Investment Unpaid Principal Related Allowance With no related allowance: Commercial real estate - construction $ — $ — $ — Commercial real estate - single and multifamily — — — Other commercial real estate loans 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 — Consumer - other — — — With an allowance recorded: Commercial real estate - construction $ — $ — $ — Commercial real estate - single and multifamily 179 181 2 Other commercial real estate loans 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 Consumer - other — — — Total Commercial real estate $ 25,390 $ 25,548 $ 158 Commercial and industrial loans 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 Acquired Loans March 31, 2017 (in thousands) Recorded Investment Unpaid Principal Related Allowance With no related allowance: Commercial real estate - single and multifamily $ 521 $ 521 $ — Other commercial real estate loans 403 403 — Other commercial and industrial loans 298 298 — Residential mortgages - 1-4 family 397 397 — With an allowance recorded: Commercial real estate - single and multifamily $ 883 $ 911 $ 28 Other commercial real estate loans 1,455 1,490 35 Other commercial and industrial loans 350 356 6 Residential mortgages - 1-4 family 93 97 4 Consumer - home equity 672 741 69 Total x Commercial real estate $ 3,262 $ 3,325 $ 63 Commercial and industrial loans 648 654 6 Residential mortgages 490 494 4 Consumer 672 741 69 Total impaired loans $ 5,072 $ 5,214 $ 142 Acquired Loans December 31, 2016 (in thousands) Recorded Investment Unpaid Principal Related Allowance With no related allowance: Commercial real estate - single and multifamily $ — $ — $ — Other commercial real estate loans 547 547 — Other commercial and industrial loans — — — Residential mortgages - 1-4 family 208 208 — 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 loans 576 635 59 Residential mortgages 297 308 11 Consumer 292 406 114 Total impaired loans $ 5,171 $ 5,605 $ 434 The following is a summary of the average recorded investment and interest income recognized on impaired loans as of March 31, 2017 and 2016: Business Activities Loans Three Months Ended March 31, 2017 Three Months Ended March 31, 2016 (in thousands) Average Recorded Cash Basis Interest Average Recorded Cash Basis Interest With no related allowance: Commercial real estate - construction $ — $ — $ — $ — Commercial real estate - single and multifamily 153 — — — Other commercial real estate loans 20,756 217 3,166 — Other commercial and industrial loans 1,350 5 734 13 Residential mortgages - 1-4 family 2,025 18 1,520 2 Consumer - home equity 1,574 19 663 4 Consumer - other — — 1 — With an allowance recorded: Commercial real estate - construction $ — $ — $ 2,000 $ 28 Commercial real estate - single and multifamily 181 — 97 1 Other commercial real estate loans 7,011 71 8,143 81 Other commercial and industrial loans 5,876 143 5,962 84 Residential mortgages - 1-4 family 939 14 1,619 19 Consumer - home equity 1,149 8 1,197 8 Consumer - other — — 106 1 Total Commercial real estate $ 28,101 $ 288 $ 13,406 $ 110 Commercial and industrial loans 7,226 148 6,696 97 Residential mortgages 2,964 32 3,139 21 Consumer loans 2,723 27 1,967 13 Total impaired loans $ 41,014 $ 495 $ 25,208 $ 241 Acquired Loans Three Months Ended March 31, 2017 Three Months Ended March 31, 2016 (in thousands) Average Recorded Cash Basis Interest Average Recorded Cash Basis Interest With no related allowance: Commercial real estate - construction $ — $ — $ — $ — Commercial real estate - single and multifamily 721 31 126 2 Other commercial real estate loans 1,272 21 760 — Other commercial and industrial loans 403 — 261 — Residential mortgages - 1-4 family 409 6 12 — Consumer - home equity — — — — Consumer - other — — 169 1 With an allowance recorded: Commercial real estate - construction $ — $ — $ — $ — Commercial real estate - single and multifamily 915 12 825 11 Other commercial real estate loans 1,494 19 2,569 44 Other commercial and industrial loans 362 13 53 — Residential mortgages - 1-4 family 98 1 334 3 Consumer - home equity 743 4 309 2 Consumer - other — — — — Total Other commercial real estate loans $ 4,402 $ 83 $ 4,280 $ 57 Commercial and industrial loans 765 13 314 — Residential mortgages 507 7 346 3 Consumer loans 743 4 478 3 Total impaired loans $ 6,417 $ 107 $ 5,418 $ 63 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 identified during the three months ended March 31, 2017 . The table includes 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 three months ended March 31, 2017 were attributable to interest rate concessions, maturity date extensions, modified payment terms, reamortization, and accelerated maturity. The modifications for the three months ending March 31, 2016 were attributable to interest rate concessions, maturity date extensions, modified payment terms, reamortization, and accelerated maturity. Three Months Ended March 31, 2017 (Dollars in thousands) Number of Pre-Modification Post-Modification Troubled Debt Restructurings Commercial - Other 6 $ 2,832 $ 2,333 Commercial and industrial - Other 1 24 24 Residential - 1-4 Family 2 205 188 Consumer - Home Equity 1 53 53 Total 10 $ 3,114 $ 2,598 Three Months Ended March 31, 2016 (Dollars in thousands) Number of Pre-Modification Post-Modification Troubled Debt Restructurings Commercial - Other 2 $ 1,049 $ 1,049 Commercial and industrial - Other 2 151 151 Total 4 $ 1,200 $ 1,200 The following table discloses the recorded investments and numbers of modifications for TDRs where a concession has been made, that then defaulted in the respective reporting period. For the three months ended March 31, 2016, there were no loans that were restructured that had subsequently defaulted during the period. Modifications that Subsequently Defaulted Three Months Ended March 31, 2017 (Dollars in thousands) Number of Contracts Recorded Investment Troubled Debt Restructurings Commercial - Other 1 $ 113 Commercial and industrial- Other 1 $ 101 The following table presents the Company’s TDR activity for the three months ended March 31, 2017 and 2016: Three Months Ended March 31, (in thousands) 2017 2016 Balance at beginning of the period $ 33,829 $ 22,048 Principal payments (888 ) (342 ) TDR status change (1) — 2,235 Other reductions/increases (2) (840 ) (1,487 ) Newly identified TDRs 2,598 1,200 Balance at end of the period $ 34,699 $ 23,654 _________________________________ (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 and charge-offs and advances to loans. The evaluation of certain loans individually for specific impairment includes loans that were previously classified as TDRs or continue to be classified as TDRs. As of March 31, 2017 , the Company maintained foreclosed residential real estate property with a fair value of $71 thousand . Additionally, residential mortgage loans collateralized by real estate property that are in the process of foreclosure as of March 31, 2017 and December 31, 2016 totaled $5.6 million and $4.8 million , respectively. As of December 31, 2016, foreclosed residential real estate property totaled $151 thousand .

LOAN LOSS ALLOWANCE

LOAN LOSS ALLOWANCE	3 Months Ended
	Mar. 31, 2017
Receivables [Abstract]
LOAN LOSS ALLOWANCE	LOAN LOSS ALLOWANCE Activity in the allowance for loan losses for the three months ended March 31, 2017 and 2016 was as follows: At or for the three months ended March 31, 2017 Business Activities Loans (In thousands) Commercial real estate Commercial and industrial loans Residential mortgages Consumer Unallocated Total Balance at beginning of period $ 16,405 $ 9,371 $ 7,752 $ 5,447 $ 254 $ 39,229 Charged-off loans 124 1,270 235 687 — 2,316 Recoveries on charged-off loans 58 16 15 86 — 175 Provision/(releases) for loan losses (224 ) 3,616 244 568 171 4,375 Balance at end of period $ 16,115 $ 11,733 $ 7,776 $ 5,414 $ 425 $ 41,463 Individually evaluated for impairment 80 123 137 50 — 390 Collectively evaluated for impairment 16,035 11,610 7,639 5,364 425 41,073 Total $ 16,115 $ 11,733 $ 7,776 $ 5,414 $ 425 $ 41,463 At or for the three months ended March 31, 2016 Business Activities Loans (In thousands) Commercial real estate Commercial and industrial loans Residential mortgages Consumer Unallocated Total Balance at beginning of period $ 14,508 $ 7,317 $ 7,566 $ 4,956 $ 227 $ 34,574 Charged-off loans 1,044 965 547 401 — 2,957 Recoveries on charged-off loans 128 74 — 67 — 269 Provision/(releases) for loan losses 2,451 2,203 42 (553 ) (531 ) 3,612 Balance at end of period $ 16,043 $ 8,629 $ 7,061 $ 4,069 $ (304 ) $ 35,498 Individually evaluated for impairment 340 130 151 56 — 677 Collectively evaluated for impairment 15,703 8,499 6,910 4,013 (304 ) 34,821 Total $ 16,043 $ 8,629 $ 7,061 $ 4,069 $ (304 ) $ 35,498 At or for the three months ended March 31, 2017 Acquired Loans (In thousands) Commercial real estate Commercial and industrial loans Residential mortgages Consumer Unallocated Total Balance at beginning of period $ 2,303 $ 1,164 $ 766 $ 536 $ — $ 4,769 Charged-off loans 577 436 143 151 — 1,307 Recoveries on charged-off loans 10 55 39 55 — 159 Provision for loan losses 392 271 44 13 — 720 Balance at end of period $ 2,128 $ 1,054 $ 706 $ 453 $ — $ 4,341 Individually evaluated for impairment 63 6 4 69 — 142 Purchased credit-impaired loans — — — — — — Collectively evaluated for impairment 2,065 1,048 702 384 — 4,199 Total $ 2,128 $ 1,054 $ 706 $ 453 $ — $ 4,341 At or for the three months ended March 31, 2016 Acquired Loans (In thousands) Commercial real estate Commercial and industrial loans Residential mortgages Consumer Unallocated Total Balance at beginning of period $ 1,903 $ 1,330 $ 976 $ 525 $ — $ 4,734 Charged-off loans 126 25 310 286 — 747 Recoveries on charged-off loans (1 ) 69 83 25 — 176 Provision for loan losses 187 (99 ) 145 161 — 394 Balance at end of period $ 1,963 $ 1,275 $ 894 $ 425 $ — $ 4,557 Individually evaluated for impairment 182 2 37 24 — 245 Purchased credit-impaired loans — — — — — — Collectively evaluated for impairment 1,781 1,273 857 401 — 4,312 Total $ 1,963 $ 1,275 $ 894 $ 425 $ — $ 4,557 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 credit problems 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 annually, 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, the Company's 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 an eleven grade internal loan rating system for each of its acquired commercial real estate, construction and commercial loans 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 ( Loss Contingencies ) 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 March 31, 2017 , the allowance for loan losses related to acquired loans under ASC 310-30 and ASC 310-20 was $4.3 million using the above mentioned criteria. The following tables present the Company’s loans by risk rating at March 31, 2017 and December 31, 2016: Business Activities Loans Commercial Real Estate Credit Risk Profile by Creditworthiness Category Construction Single and multi-family Other Total commercial real estate (In thousands) March 31, 2017 December 31, 2016 March 31, 2017 December 31, 2016 March 31, 2017 December 31, 2016 March 31, 2017 December 31, 2016 Grade: Pass $ 281,134 $ 253,302 $ 330,460 $ 189,310 $ 1,352,475 $ 1,434,762 $ 1,964,069 $ 1,877,374 Special mention — — 6,046 334 10,642 5,827 16,688 6,161 Substandard — — 2,753 2,175 42,795 40,598 45,548 42,773 Doubtful — — — — 36 36 36 36 Total $ 281,134 $ 253,302 $ 339,259 $ 191,819 $ 1,405,948 $ 1,481,223 $ 2,026,341 $ 1,926,344 Commercial and Industrial Loans Credit Risk Profile by Creditworthiness Category Asset based lending Other Total comm. and industrial loans (In thousands) March 31, 2017 December 31, 2016 March 31, 2017 December 31, 2016 March 31, 2017 December 31, 2016 Grade: Pass $ 351,992 $ 321,270 $ 641,461 $ 569,704 $ 993,453 $ 890,974 Special mention — — 3,882 123 3,882 123 Substandard — — 16,315 13,825 16,315 13,825 Doubtful — — 3,125 3,180 3,125 3,180 Total $ 351,992 $ 321,270 $ 664,783 $ 586,832 $ 1,016,775 $ 908,102 Residential Mortgages Credit Risk Profile by Internally Assigned Grade 1-4 family Construction Total residential mortgages (In thousands) March 31, 2017 December 31, 2016 March 31, 2017 December 31, 2016 March 31, 2017 December 31, 2016 Grade: Pass $ 1,544,866 $ 1,578,913 $ 11,545 $ 11,178 $ 1,556,411 $ 1,590,091 Special mention 66 701 — — 66 701 Substandard 3,830 4,179 — — 3,830 4,179 Total $ 1,548,762 $ 1,583,793 $ 11,545 $ 11,178 $ 1,560,307 $ 1,594,971 Consumer Loans Credit Risk Profile Based on Payment Activity Home equity Auto and other Total consumer loans (In thousands) March 31, 2017 December 31, 2016 March 31, 2017 December 31, 2016 March 31, 2017 December 31, 2016 Performing $ 310,239 $ 310,846 $ 495,983 $ 477,416 $ 806,222 $ 788,262 Nonperforming 2,400 2,675 1,173 952 3,573 3,627 Total $ 312,639 $ 313,521 $ 497,156 $ 478,368 $ 809,795 $ 791,889 Acquired Loans Commercial Real Estate Credit Risk Profile by Creditworthiness Category Construction Single and multi-family Other Total commercial real estate (In thousands) March 31, 2017 December 31, 2016 March 31, 2017 December 31, 2016 March 31, 2017 December 31, 2016 March 31, 2017 December 31, 2016 Grade: Pass $ 24,276 $ 33,461 $ 100,195 $ 119,414 $ 474,137 $ 496,562 $ 598,608 $ 649,437 Special mention — — 845 907 11,885 1,622 12,730 2,529 Substandard 700 746 4,633 5,351 30,351 32,031 35,684 38,128 Total $ 24,976 $ 34,207 $ 105,673 $ 125,672 $ 516,373 $ 530,215 $ 647,022 $ 690,094 Commercial and Industrial Loans Credit Risk Profile by Creditworthiness Category Asset based lending Other Total comm. and industrial loans (In thousands) March 31, 2017 December 31, 2016 March 31, 2017 December 31, 2016 March 31, 2017 December 31, 2016 Grade: Pass $ — $ — $ 120,511 $ 147,102 $ 120,511 $ 147,102 Special mention — — 1,421 1,260 1,421 1,260 Substandard — — 7,418 5,574 7,418 5,574 Total $ — $ — $ 129,350 $ 153,936 $ 129,350 $ 153,936 Residential Mortgages Credit Risk Profile by Internally Assigned Grade 1-4 family Construction Total residential mortgages (In thousands) March 31, 2017 December 31, 2016 March 31, 2017 December 31, 2016 March 31, 2017 December 31, 2016 Grade: Pass $ 286,908 $ 294,983 $ 712 $ 804 $ 287,620 $ 295,787 Special mention 88 343 — — 88 343 Substandard 2,669 2,029 — — 2,669 2,029 Total $ 289,665 $ 297,355 $ 712 $ 804 $ 290,377 $ 298,159 Consumer Loans Credit Risk Profile Based on Payment Activity Home equity Auto and other Total consumer loans (In thousands) March 31, 2017 December 31, 2016 March 31, 2017 December 31, 2016 March 31, 2017 December 31, 2016 Performing $ 76,470 $ 79,762 $ 97,961 $ 105,117 $ 174,431 $ 184,879 Nonperforming 838 517 697 895 1,535 1,412 Total $ 77,308 $ 80,279 $ 98,658 $ 106,012 $ 175,966 $ 186,291 The following table summarizes information about total loans rated Special Mention or lower as of March 31, 2017 and December 31, 2016. 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. March 31, 2017 December 31, 2016 (In thousands) Business Acquired Loans Total Business Acquired Loans Total Non-Accrual $ 19,726 $ 5,399 $ 25,125 $ 16,816 $ 5,424 $ 22,240 Substandard Accruing 52,809 43,269 96,078 51,125 44,177 95,302 Total Classified 72,535 48,668 121,203 67,941 49,601 117,542 Special Mention 21,114 14,856 35,970 7,479 4,323 11,802 Total Criticized $ 93,649 $ 63,524 $ 157,173 $ 75,420 $ 53,924 $ 129,344

DEPOSITS

DEPOSITS	3 Months Ended
	Mar. 31, 2017
Deposits [Abstract]
DEPOSITS	DEPOSITS A summary of time deposits is as follows: (In thousands) March 31, December 31, Time less than $250,000 $ 2,093,791 $ 2,015,332 Time $250,000 or more 325,477 318,211 Total time deposits $ 2,419,268 $ 2,333,543 Included in time deposits are brokered deposits of $953.8 million and $787.9 million at March 31, 2017 and December 31, 2016 , respectively. Included in the deposit balances contained on the balance sheet are reciprocal deposits of $114.7 million and $113.4 million at March 31, 2017 and December 31, 2016 , respectively.

BORROWED FUNDS

BORROWED FUNDS	3 Months Ended
	Mar. 31, 2017
Debt Disclosure [Abstract]
BORROWED FUNDS	BORROWED FUNDS Borrowed funds at March 31, 2017 and December 31, 2016 are summarized, as follows: March 31, 2017 December 31, 2016 Weighted Weighted Average Average (dollars in thousands) Principal Rate Principal Rate Short-term borrowings: Advances from the FHLB $ 1,136,801 0.93 % $ 1,072,044 0.71 % Other borrowings — — 10,000 2.42 Total short-term borrowings: 1,136,801 0.93 1,082,044 0.72 Long-term borrowings: Advances from the FHLB and other borrowings 157,920 1.43 142,792 1.53 Subordinated borrowings 73,742 7.00 73,697 7.00 Junior subordinated borrowings 15,464 2.90 15,464 2.77 Total long-term borrowings: 247,126 3.19 231,953 3.35 Total $ 1,383,927 1.33 % $ 1,313,997 1.19 % Short term debt includes Federal Home Loan Bank (“FHLB”) advances with an original maturity of less than one year and 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 FHLB that bears a daily adjustable rate calculated by the FHLB. There was no outstanding balance on the FHLB line of credit for the periods ended March 31, 2017 and 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 took place for the periods ended March 31, 2017 and December 31, 2016 . Long-term FHLB advances consist of advances with an original maturity of more than one year. The advances outstanding at March 31, 2017 include callable advances totaling $6.0 million , and amortizing advances totaling $1.1 million . The advances outstanding at December 31, 2016 include callable advances totaling $11.0 million , and amortizing advances totaling $1.2 million . All FHLB 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 FHLB advances as of March 31, 2017 is as follows: March 31, 2017 Weighted Average (in thousands, except rates) Principal Rate Fixed rate advances maturing: 2017 $ 1,160,800 0.95 % 2018 118,879 1.17 2019 — — 2020 5,184 1.94 2021 and beyond 9,858 2.73 Total FHLB advances $ 1,294,721 0.99 % The Company did not have variable-rate FHLB advances for the periods ended March 31, 2017 and 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 rate plus 5.113% . The subordinated note includes reduction to the note principal balance of $675 thousand and $706 thousand for unamortized debt issuance costs as of March 31, 2017 and December 31 2016, 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 2.90% and 2.77% at March 31, 2017 and December 31, 2016 , 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.

CAPITAL RATIOS AND SHAREHOLDERS

CAPITAL RATIOS AND SHAREHOLDERS' EQUITY	3 Months Ended
	Mar. 31, 2017
Stockholders' Equity Note [Abstract]
CAPITAL RATIOS AND STOCKHOLDERS' EQUITY	CAPITAL RATIOS AND SHAREHOLDERS’ EQUITY The actual and required capital ratios were as follows: March 31, Regulatory December 31, Regulatory Company (consolidated) Total capital to risk weighted assets 11.8 % 10.0 % 11.9 % 10.0 % Common equity tier 1 capital to risk weighted assets 9.9 6.5 9.9 6.5 Tier 1 capital to risk weighted assets 10.1 8.0 10.1 8.0 Tier 1 capital to average assets 7.8 5.0 7.9 5.0 Bank Total capital to risk weighted assets 11.1 % 10.0 % 11.2 % 10.0 % Common equity tier 1 capital to risk weighted assets 9.9 6.5 10.0 6.5 Tier 1 capital to risk weighted assets 9.9 8.0 10.0 8.0 Tier 1 capital to average assets 7.7 5.0 7.8 5.0 At each date shown, the Company and the Bank 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 table above. 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, increased to 1.25% on January 1, 2017, and will increase to 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 March 31, 2017 , 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 March 31, 2017 also exceeded the minimum capital requirements including the currently applicable capital conservation buffer of 1.25% . Accumulated other comprehensive income (loss) Components of accumulated other comprehensive income is as follows: (In thousands) March 31, December 31, Other accumulated comprehensive income, before tax: Net unrealized holding gain on AFS securities $ 15,743 $ 25,176 Net unrealized loss on cash flow hedging derivatives — (6,573 ) Net unrealized holding loss on pension plans (2,954 ) (2,954 ) Income taxes related to items of accumulated other comprehensive income: Net unrealized holding gain on AFS securities (6,095 ) (9,636 ) Net unrealized loss on cash flow hedging derivatives — 2,589 Net unrealized holding loss on pension plans 1,164 1,164 Accumulated other comprehensive income $ 7,858 $ 9,766 The following table presents the components of other comprehensive income for the three months ended March 31, 2017 and 2016 : (In thousands) Before Tax Tax Effect Net of Tax Three Months Ended March 31, 2017 Net unrealized holding gain on AFS securities: x Net unrealized gains arising during the period $ 3,137 $ (1,173 ) $ 1,964 Less: reclassification adjustment for gains realized in net income 12,570 (4,713 ) 7,857 Net unrealized holding (loss) on AFS securities (9,433 ) 3,540 (5,893 ) Net unrealized loss on cash flow hedging derivatives: Net unrealized (loss) arising during the period (449 ) 180 (269 ) Less: reclassification adjustment for (losses) realized in net income (7,022 ) 2,768 (4,254 ) Net unrealized gain on cash flow hedging derivatives 6,573 (2,588 ) 3,985 Other comprehensive (loss) $ (2,860 ) $ 952 $ (1,908 ) Three Months Ended March 31, 2016 Net unrealized holding gain on AFS securities: Net unrealized gains arising during the period $ 17,742 $ (6,869 ) $ 10,873 Less: reclassification adjustment for gains realized in net income 36 (13 ) 23 Net unrealized holding gain on AFS securities 17,706 (6,856 ) 10,850 Net unrealized loss on cash flow hedging derivatives: Net unrealized (loss) arising during the period (4,914 ) 1,972 (2,942 ) Less: reclassification adjustment for (losses) realized in net income (408 ) 164 (244 ) Net unrealized (loss) on cash flow hedging derivatives (4,506 ) 1,808 (2,698 ) Other comprehensive income $ 13,200 $ (5,048 ) $ 8,152 The following table presents the changes in each component of accumulated other comprehensive income (loss), for the three months ended March 31, 2017 and 2016 : (in thousands) Net unrealized holding gain on AFS Securities Net loss on effective cash flow hedging derivatives Net unrealized holding loss on pension plans Total Three Months Ended March 31, 2017 Balance at Beginning of Period $ 15,541 $ (3,985 ) $ (1,790 ) $ 9,766 Other comprehensive gain (loss) before reclassifications 1,964 (269 ) — 1,695 Less: amounts reclassified from accumulated other comprehensive income (loss) 7,857 (4,254 ) — 3,603 Total other comprehensive (loss) income (5,893 ) 3,985 — (1,908 ) Balance at End of Period $ 9,648 $ — $ (1,790 ) $ 7,858 Three Months Ended March 31, 2016 Balance at Beginning of Period $ 3,880 $ (5,108 ) $ (2,077 ) $ (3,305 ) Other comprehensive gain (loss) before reclassifications 10,873 (2,942 ) — 7,931 Less: amounts reclassified from accumulated other comprehensive income (loss) 23 (244 ) — (221 ) Total other comprehensive income (loss) 10,850 (2,698 ) — 8,152 Balance at End of Period $ 14,730 $ (7,806 ) $ (2,077 ) $ 4,847 The following table presents the amounts reclassified out of each component of accumulated other comprehensive income (loss) for the three months ended March 31, 2017 and 2016 : Affected Line Item in the Three Months Ended March 31, Statement where Net Income (in thousands) 2017 2016 is Presented Realized gains on AFS securities: $ 12,570 $ 36 Non-interest income (4,713 ) (13 ) Tax expense 7,857 23 Net of tax Realized (losses) on cash flow hedging derivatives: (393 ) (408 ) Interest expense (6,629 ) — Non-interest expense 2,768 164 Tax benefit (4,254 ) (244 ) Net of tax Total reclassifications for the period $ 3,603 $ (221 ) Net of tax

EARNINGS PER SHARE

EARNINGS PER SHARE	3 Months Ended
	Mar. 31, 2017
Earnings Per Share [Abstract]
EARNINGS PER SHARE	EARNINGS PER SHARE Earnings per share have been computed based on the following (average diluted shares outstanding are calculated using the treasury stock method): Three Months Ended March 31, (In thousands, except per share data) 2017 2016 Net income $ 15,460 $ 16,001 Average number of common shares issued 36,732 32,162 Less: average number of treasury shares 1,020 1,138 Less: average number of unvested stock award shares 432 513 Average number of basic common shares outstanding 35,280 30,511 Plus: dilutive effect of unvested stock award shares 126 119 Plus: dilutive effect of stock options outstanding 46 58 Average number of diluted common shares outstanding 35,452 30,688 Earnings per share: Basic $ 0.44 $ 0.52 Diluted $ 0.44 $ 0.52 For the three months ended March 31, 2017 , 306 thousand shares of restricted stock and 55 thousand options were anti-dilutive and therefore excluded from the earnings per share calculations. For the three months ended March 31, 2016 , 394 thousand shares of restricted stock and 206 thousand options were anti-dilutive and therefore excluded from the earnings per share calculations.

STOCK-BASED COMPENSATION PLANS

STOCK-BASED COMPENSATION PLANS	3 Months Ended
	Mar. 31, 2017
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
STOCK-BASED COMPENSATION PLANS	STOCK-BASED COMPENSATION PLANS A combined summary of activity in the Company’s stock award and stock option plans for the three months ended March 31, 2017 is presented in the following table: Non-Vested Stock Awards Outstanding Stock Options Outstanding (Shares in thousands) Number of Shares Weighted-Average Grant Date Fair Value Number of Shares Weighted-Average Exercise Price December 31, 2016 448 $ 26.28 109 $ 15.72 Granted 81 35.47 — — Stock options exercised — — (6 ) 14.23 Stock awards vested (101 ) 25.35 — — Forfeited (2 ) 26.31 — — Expired — — (10 ) 33.46 March 31, 2017 426 $ 28.49 93 $ 13.91 Exercisable options at March 31, 2017 93 $ 13.91 During the three months ended March 31, 2017 and 2016 , proceeds from stock option exercises totaled $81 thousand and $25 thousand , respectively. During the three months ended March 31, 2017 , there were 101 thousand shares issued in connection with vested stock awards. During the three months ended March 31, 2016 , there were 62 thousand shares issued in connection with vested stock awards. All of these shares were issued from available treasury stock. Stock-based compensation expense totaled $1.2 million during the three months ended March 31, 2017 and 2016 , respectively. Stock-based compensation expense is recognized over the requisite service period for all awards.

DERIVATIVE INSTRUMENTS AND HEDG

DERIVATIVE INSTRUMENTS AND HEDGING ACTIVITIES	3 Months Ended
	Mar. 31, 2017
Derivative Instruments and Hedging Activities Disclosure [Abstract]
DERIVATIVE FINANCIAL INSTRUMENTS AND HEDGING ACTIVITIES	DERIVATIVE FINANCIAL INSTRUMENTS AND HEDGING ACTIVITIES As of March 31, 2017 , the Company held derivatives with a total notional amount of $2.1 billion . The Company had economic hedges and non-hedging derivatives totaling $1.8 billion and $274.8 million , respectively, which are not designated as hedges for accounting purposes with changes in fair value recorded directly through earnings. Economic hedges included interest rate swaps totaling $1.4 billion , risk participation agreements with dealer banks of $92.7 million , and $321.2 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/Capital 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 March 31, 2017 . The Company pledged collateral to derivative counterparties in the form of securities with an amortized cost of $28.6 million and a fair value of $28.6 million as of March 31, 2017 . 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 derivative assets and liabilities at March 31, 2017 , follows: Weighted Weighted Average Rate Estimated Notional Average Contract Fair Value Amount Maturity Received pay rate Asset (Liability) (In thousands) (In years) (In thousands) Cash flow hedges: Interest rate swaps on FHLB borrowings $ — 0 — % — % $ — Total cash flow hedges — — Economic hedges: Interest rate swap on tax advantaged economic development bond 11,230 12.7 1.15 % 5.09 % (1,899 ) Interest rate swaps on loans with commercial loan customers 706,862 6.2 2.57 % 4.20 % (4,624 ) Reverse interest rate swaps on loans with commercial loan customers 706,862 6.2 4.20 % 2.57 % 4,787 Risk participation agreements with dealer banks 92,708 10.7 (13 ) Forward sale commitments 321,234 0.2 (1,251 ) Total economic hedges 1,838,896 (3,000 ) Non-hedging derivatives: Commitments to lend 274,843 0.2 8,061 Total non-hedging derivatives 274,843 8,061 Total $ 2,113,739 $ 5,061 Information about derivative assets and liabilities at December 31, 2016 , follows: Weighted Weighted Average Rate Estimated Notional Average Contract Fair Value Amount Maturity Received pay rate Asset (Liability) (In thousands) (In years) (In thousands) Cash flow hedges: Interest rate swaps on FHLB 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 ) Cash flow hedges In the first quarter of 2017, the Company maintained six interest rate swap contracts with an aggregate notional value of $300 million with original durations of three years. This hedge strategy converted one month rolling FHLB borrowings based on the FHLB’s one month fixed interest rate to fixed interest rates, thereby protecting the Company from floating interest rate variability. 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 of March 31, 2017, the Company no longer held the FHLB advances associated with the interest rate swaps. 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. For the periods presented, the effective portion of unrealized changes in the fair value of derivatives accounted for as cash flow hedges was reported in other comprehensive income. Each quarter, the Company assessed 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. No ineffectiveness was identified for the three months ending March 31, 2017 and 2016. 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: Three Months Ended March 31, (In thousands) 2017 2016 Interest rate swaps on FHLB borrowings: Unrealized (loss) recognized in accumulated other comprehensive loss $ (449 ) $ (4,914 ) Less: reclassification of unrealized (loss) from accumulated other comprehensive income to interest expense (393 ) (408 ) Less: reclassification of unrealized (loss) from accumulated other comprehensive income to other non-interest expense (6,629 ) — Net tax (expense) benefit on items recognized in accumulated other comprehensive income (2,589 ) 1,808 Other comprehensive gain (loss) recorded in accumulated other comprehensive income, net of reclassification adjustments and tax effects $ 3,984 $ (2,698 ) Hedge ineffectiveness on interest rate swaps designated as cash flow hedges was immaterial to the Company’s financial statements during the three months ended March 31, 2017 and 2016 . Economic hedges As of March 31, 2017 , the Company has an interest rate swap with a $11.2 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 $(162) thousand as of March 31, 2017 . 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 gets paid 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. Changes in fair value are recorded in current period earnings. 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 originated 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 sale 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 sale 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 TBA 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 interest rate lock commitments (“IRLCs”) 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. IRLCs that relate to the origination of mortgage loans that will be held for sale are considered derivative financial instruments under applicable accounting guidance. Outstanding IRLCs 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 IRLCs are free-standing derivatives which are carried at fair value with changes recorded in noninterest income in the Company’s consolidated statements of income. Changes in the fair value of IRLCs 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: Three Months Ended March 31, (In thousands) 2017 2016 Economic hedges Interest rate swap on industrial revenue bond: Unrealized gain (loss) recognized in other non-interest income $ 122 $ (539 ) Interest rate swaps on loans with commercial loan customers: Unrealized gain (loss) recognized in other non-interest income 1,098 (13,597 ) Reverse interest rate swaps on loans with commercial loan customers: Unrealized gain (loss) recognized in other non-interest income (1,098 ) 13,597 (Unfavorable) Favorable change in credit valuation adjustment recognized in other non-interest income (162 ) (61 ) Risk participation agreements: Unrealized (loss) gain recognized in other non-interest income (18 ) 83 Forward commitments: Unrealized (loss) gain recognized in other non-interest income (1,251 ) (447 ) Realized gain (loss) in other non-interest income (2,906 ) (383 ) Non-hedging derivatives Commitments to lend Unrealized gain recognized in other non-interest income $ 8,061 $ 802 Realized gain in other non-interest income 8,774 849 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 $9.8 million and $11.5 million as of March 31, 2017 and December 31, 2016 , respectively. The Company had net liability positions with its financial institution counterparties totaling $6.6 million and $15.4 million as of March 31, 2017 and December 31, 2016 , respectively. The Company had net liability positions with its commercial banking counterparties totaling $5.0 million and $4.4 million as of March 31, 2017 and December 31, 2016 . The collateral posted by the Company that covered liability positions was $6.6 million and $19.8 million as of March 31, 2017 and December 31, 2016 , respectively. The following table presents the assets and liabilities subject to an enforceable master netting arrangement as of March 31, 2017 and December 31, 2016 : Offsetting of Financial Assets and Derivative Assets Gross Amounts of Gross Amounts Offset in the Net Amounts of Assets Presented in the Gross Amounts Not Offset in the Statements of Condition Recognized Statements of Statements of Financial Cash (in thousands) Assets Condition Condition Instruments Collateral Received Net Amount March 31, 2017 Interest Rate Swap Agreements: Institutional counterparties $ 41 $ — $ 41 $ — $ — $ 41 Commercial counterparties 9,743 — 9,743 — — 9,743 Total $ 9,784 $ — $ 9,784 $ — $ — $ 9,784 Offsetting of Financial Liabilities and Derivative Liabilities Gross Amounts of Gross Amounts Offset in the Net Amounts of Liabilities Presented in the Gross Amounts Not Offset in the Statements of Condition Recognized Statements of Statements of Financial Cash (in thousands) Liabilities Condition Condition Instruments Collateral Pledged Net Amount March 31, 2017 Interest Rate Swap Agreements: Institutional counterparties $ (11,740 ) $ 5,164 $ (6,576 ) $ 6,576 $ — $ — Commercial counterparties (4,958 ) 2 (4,956 ) — — (4,956 ) Total $ (16,698 ) $ 5,166 $ (11,532 ) $ 6,576 $ — $ (4,956 ) Offsetting of Financial Assets and Derivative Assets Gross Amounts of Gross Amounts Offset in the Net Amounts of Assets Presented in the Gross Amounts Not Offset in the Statements of Condition Recognized Statements of Statements of Financial Cash (in thousands) Assets Condition Condition Instruments Collateral Received Net Amount 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 Amounts of Gross Amounts Offset in the Net Amounts of Liabilities Presented in the Gross Amounts Not Offset in the Statements of Condition Recognized Statements of Statements of Financial Cash (in thousands) Liabilities Condition Condition Instruments Collateral Pledged Net Amount 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 )

FAIR VALUE MEASUREMENTS

FAIR VALUE MEASUREMENTS	3 Months Ended
	Mar. 31, 2017
Fair Value Disclosures [Abstract]
FAIR VALUE MEASUREMENTS	FAIR VALUE MEASUREMENTS A description of the valuation methodologies used for assets and liabilities 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 The following table summarizes financial assets and financial liabilities measured at fair value on a recurring basis as of March 31, 2017 and December 31, 2016 , segregated by the level of the valuation inputs within the fair value hierarchy utilized to measure fair value. March 31, 2017 Level 1 Level 2 Level 3 Total (In thousands) Inputs Inputs Inputs Fair Value Trading security $ — $ — $ 12,966 $ 12,966 Available-for-sale securities: Municipal bonds and obligations — 120,591 — 120,591 Agency collateralized mortgage obligations — 752,077 — 752,077 Agency residential mortgage-backed securities — 231,151 — 231,151 Agency commercial mortgage-backed securities — 63,377 — 63,377 Corporate bonds — 60,496 — 60,496 Trust preferred securities — 11,788 — 11,788 Other bonds and obligations — 10,862 — 10,862 Marketable equity securities 43,008 333 — 43,341 Loans held for sale — 89,741 — 89,741 Derivative assets — 14,897 8,061 22,958 Other assets — — 976 976 Derivative liabilities 1,229 16,645 22 17,896 December 31, 2016 Level 1 Level 2 Level 3 Total (In thousands) Inputs Inputs Inputs Fair Value 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 There were no transfers between levels during the three months ended March 31, 2017 . During the three months ended March 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. 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 held for sale (HFS) 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 Fair Value March 31, 2017 Aggregate Aggregate Less Aggregate (In thousands) Fair Value Unpaid Principal Unpaid Principal Loans Held for Sale $ 89,741 $ 86,653 $ 3,088 Aggregate Fair Value December 31, 2016 Aggregate Aggregate Less Aggregate (In thousands) Fair Value Unpaid Principal Unpaid Principal Loans Held for Sale $ 120,673 $ 118,178 $ 2,495 The changes in fair value of loans held for sale for the three months ended March 31, 2017 and March 31, 2016 , were gains of $593 thousand and $215 thousand , respectively. The changes in fair value are included in mortgage banking originations 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 March 31, 2017 , the Company assessed the significance of the impact of the credit valuation adjustments on the overall valuation of its derivative positions and determined that the credit valuation adjustments are not significant to the overall valuation of its derivatives. As a result, the Company 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 specific 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 in a lock position 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 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 the hedging instrument, 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 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 and liabilities that were measured at fair value on a recurring basis for the three months ended March 31, 2017 and 2016 . Assets (Liabilities) Securities Capitalized Trading Available Commitments Forward Servicing (In thousands) Security for Sale to Lend Commitments Rights Three Months Ended March 31, 2017 December 31, 2016 $ 13,229 $ — $ 4,738 $ 100 $ 798 Unrealized (loss) gain, net recognized in other non-interest income (106 ) — 17,302 (122 ) (2 ) Paydown of trading security (157 ) — — — — Transfers to Level 2 — — — — — Transfers to held for sale loans — — (13,979 ) — — Additions to servicing rights — — — — 180 March 31, 2017 $ 12,966 $ — $ 8,061 $ (22 ) $ 976 Unrealized gains (losses) relating to instruments still held at March 31, 2017 $ 1,736 $ — $ 8,061 $ (22 ) $ — Assets (Liabilities) Securities Interest Rate Capitalized Trading Available Lock Forward Servicing (In thousands) Security for Sale Commitments Commitments Rights Three Months Ended March 31, 2016 December 31, 2015 $ 14,189 $ 708 $ 323 $ 9 $ — Unrealized gain, net recognized in other non-interest income 433 — 1,206 (152 ) — Paydown of trading account security (148 ) — — — — Transfers to Level 2 — (708 ) — — — Transfers to held for sale loans — — (727 ) — — Additions to servicing rights $ — $ — $ — $ — $ — March 31, 2016 $ 14,474 $ — $ 802 $ (143 ) $ — Unrealized gains (losses) relating to instruments still held at March 31, 2016 $ 2,637 $ — $ 802 $ (143 ) $ — Quantitative information about the significant unobservable inputs within Level 3 recurring assets and liabilities is as follows: Fair Value Significant Unobservable Input (In thousands) March 31, 2017 Valuation Techniques Unobservable Inputs Value Assets (Liabilities) Trading Security $ 12,966 Discounted Cash Flow Discount Rate 2.68 % Forward Commitments 8,061 Historical Trend Closing Ratio 79.68 % Pricing Model Origination Costs, per loan $ 3,692 Commitments to Lend 22 Historical Trend Closing Ratio 79.68 % Pricing Model Origination Costs, per loan $ 3,692 Capitalized Servicing Rights 976 Discounted Cash Flow Constant Prepayment rate (CPR) 10.30 % Discount Rate 11.00 % Total $ 22,025 Fair Value Significant Unobservable Input (In thousands) December 31, 2016 Valuation Techniques Unobservable Inputs Value Assets (Liabilities) 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 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 at fair value on a non-recurring basis. March 31, 2017 December 31, 2016 Fair Value Measurement Date as of March 31, 2017 Level 3 Level 3 Level 3 (In thousands) Inputs Inputs Inputs Assets Impaired loans $ 18,968 $ 17,761 March 2017 Capitalized servicing rights 11,766 10,726 February/March 2017 Other real estate owned 71 151 July 2016 - Oct. 2016 Total $ 30,805 $ 28,638 Quantitative information about the significant unobservable inputs within Level 3 non-recurring assets is as follows: Fair Value (in thousands) March 31, 2017 Valuation Techniques Unobservable Inputs Range (Weighted Average) (a) Assets Impaired loans $ 18,968 Appraised value of collateral Discounted cash flow - loss severity 0.24% to 19.09% (3.61%) Appraised value $22.70 to $2,221.20 ($1,017.60) Capitalized servicing rights 11,766 Discounted cash flow Constant prepayment rate (CPR) 7.33% to 13.12% (9.90%) Discount rate 10.00% to 12.50% (11.17%) Other real estate owned 71 Appraised value of collateral Appraised value $94.00 to $175.00 ($134.90) Total $ 30,805 (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. Fair Value (in thousands) December 31, 2016 Valuation Techniques Unobservable Inputs Range (Weighted Average) (a) Assets Impaired loans $ 17,761 Appraised value of collateral Discounted cash flow - loss severity 0.00% 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 Appraised value of collateral Appraised value $101 to $129 ($122) Total $ 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. There were no Level 1 or Level 2 nonrecurring fair value measurements for the periods ended March 31, 2017 and December 31, 2016 . 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 amount 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, nonrecurring fair value measurement adjustments that relate to real estate collateral 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 comparable sales and appraisals. Summary of Estimated Fair Values of Financial Instruments The following tables summarize the estimated fair values, and related carrying amounts, of the Company’s financial instruments. Certain financial instruments and all non-financial instruments are excluded. Accordingly, the aggregate fair value amounts presented may not necessarily represent the underlying fair value of the Company. March 31, 2017 Carrying Fair (In thousands) Amount Value Level 1 Level 2 Level 3 Financial Assets Cash and cash equivalents $ 93,343 $ 93,343 $ 93,343 $ — $ — Trading security 12,966 12,966 — — 12,966 Securities available for sale 1,293,683 1,293,683 43,008 1,250,675 — Securities held to maturity 331,179 334,866 — 299,751 35,115 FHLB bank stock and restricted securities 76,407 76,407 — 76,407 — Net loans 6,610,129 6,642,677 — — 6,642,677 Loans held for sale 89,741 89,741 — 89,741 — Accrued interest receivable 27,599 27,599 — 27,599 — Cash surrender value of bank-owned life insurance policies 139,914 139,914 — 139,914 — Derivative assets 22,958 22,958 — 14,897 8,061 Assets held for sale 322 322 — 322 — Financial Liabilities Total deposits $ 6,656,054 $ 6,659,280 $ — $ 6,659,280 $ — Short-term debt 1,136,801 1,136,621 — 1,136,621 — Long-term Federal Home Loan Bank advances 157,920 157,884 — 157,884 — Subordinated borrowings 89,206 97,623 — 97,623 — Derivative liabilities 17,896 17,896 1,229 16,645 22 December 31, 2016 Carrying Fair (In thousands) Amount Value 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 bank stock and restricted 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 Federal Home Loan Bank advances 142,792 143,151 — 143,151 — Subordinated borrowings 89,161 96,973 — 96,973 — Derivative liabilities 24,420 24,420 — 24,420 — 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 bank stock and restricted 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 cash flows discounted over their respective loan origination rates. The origination rates are adjusted for substandard and special mention loans to factor the impact of declines in the loan’s credit standing. 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.

NET INTEREST INCOME AFTER PROVI

NET INTEREST INCOME AFTER PROVISION FOR LOAN LOSSES	3 Months Ended
	Mar. 31, 2017
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 months ended March 31, 2017 and 2016, respectively. Three Months Ended March 31, (In thousands) 2017 2016 Net interest income $ 66,886 $ 57,697 Provision for loan losses 5,095 4,006 Net interest income after provision for loan losses $ 61,791 $ 53,691

BASIS OF PRESENTATION (Policies

BASIS OF PRESENTATION (Policies)	3 Months Ended
	Mar. 31, 2017
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Basis of Presentation	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, Massachusetts, and Berkshire Insurance Group, Inc. 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. 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.
Recently Adopted Accounting Principles and Future Application of Accounting Pronouncements	Recently Adopted Accounting Principles Effective January 1, 2017, the following new accounting guidance was adopted by the Company: • ASU No. 2016-05, Effect of Derivative Contract Novations on Existing Hedge Accounting Relationships; • ASU No. 2016-06, Contingent Put and Call Options in Debt Instruments; • ASU No. 2016-07, Simplifying the Transition to the Equity Method of Accounting • ASU No. 2016-15, Classification of Certain Cash Receipts and Cash Payments; and • ASU No. 2017-08, Premium Amortization on Purchased Callable Debt Securities The adoption of these accounting standards did not have a material impact on the Company's financial statements. 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, ASU 2016-12, and ASU 2016-20 are the same as those provided by ASU 2015-14. While the assessment of the provisions of ASU No. 2014-09 is not complete, the timing of the Company’s revenue recognition is not expected to materially change. Certain implementation issues relevant to the industry are still pending resolution; however our preliminary conclusions reached as to the application of the new guidance are not expected to be significantly affected. We will continue to evaluate any impact as additional guidance is issued and as our internal assessment progresses. 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 available-for-sale debt securities in combination with other deferred tax assets. The guidance provides an election to subsequently measure certain non-marketable 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. While the Company has performed a preliminary evaluation of the provisions of ASU No. 2016-01, the effect of the adoption will depend on the Company’s portfolio at the time of transition. The Company will continue to closely monitor developments and additional guidance. 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. The Company continues to evaluate the extent of potential impact the new guidance will have 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 in the process of identifying and implementing required changes to loan loss estimation models and processes and evaluating the impact of this new accounting guidance, which at the date of adoption is expected to increase the allowance for credit losses with a resulting negative adjustment to retained earnings.

SECURITIES AVAILABLE FOR SALE23

SECURITIES AVAILABLE FOR SALE AND HELD TO MATURITY (Tables)	3 Months Ended
	Mar. 31, 2017
Investments, Debt and Equity Securities [Abstract]
Summary of securities available for sale ("AFS") and held to maturity	The following is a summary of securities available for sale and held to maturity: (In thousands) Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Fair Value March 31, 2017 Securities available for sale Debt securities: Municipal bonds and obligations $ 118,170 $ 3,391 $ (970 ) $ 120,591 Agency collateralized mortgage obligations 752,638 2,863 (3,424 ) 752,077 Agency mortgage-backed securities 232,888 507 (2,244 ) 231,151 Agency commercial mortgage-backed securities 65,003 83 (1,709 ) 63,377 Corporate bonds 60,331 632 (467 ) 60,496 Trust preferred securities 11,380 408 — 11,788 Other bonds and obligations 10,662 211 (11 ) 10,862 Total debt securities 1,251,072 8,095 (8,825 ) 1,250,342 Marketable equity securities 35,823 8,433 (915 ) 43,341 Total securities available for sale 1,286,895 16,528 (9,740 ) 1,293,683 Securities held to maturity Municipal bonds and obligations 202,696 4,108 (2,299 ) 204,505 Agency collateralized mortgage obligations 75,311 1,438 (420 ) 76,329 Agency mortgage-backed securities 8,762 — (257 ) 8,505 Agency commercial mortgage-backed securities 10,529 — (441 ) 10,088 Tax advantaged economic development bonds 33,557 1,558 — 35,115 Other bonds and obligations 324 — — 324 Total securities held to maturity 331,179 7,104 (3,417 ) 334,866 Total $ 1,618,074 $ 23,632 $ (13,157 ) $ 1,628,549 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
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 March 31, 2017 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 Amortized Fair Amortized Fair (In thousands) Cost Value Cost Value Within 1 year $ 279 $ 283 $ 1,252 $ 1,254 Over 1 year to 5 years 25,458 25,978 19,126 19,885 Over 5 years to 10 years 53,862 54,934 16,244 16,706 Over 10 years 120,944 122,542 199,955 202,099 Total bonds and obligations 200,543 203,737 236,577 239,944 Marketable equity securities 35,823 43,341 — — Mortgage-backed securities 1,050,529 1,046,605 94,602 94,922 Total $ 1,286,895 $ 1,293,683 $ 331,179 $ 334,866
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 Gross Gross Gross Unrealized Fair Unrealized Fair Unrealized Fair (In thousands) Losses Value Losses Value Losses Value March 31, 2017 Securities available for sale Debt securities: Municipal bonds and obligations $ 970 $ 12,175 $ — $ — $ 970 $ 12,175 Agency collateralized mortgage obligations 3,424 420,178 — — 3,424 420,178 Agency mortgage-backed securities 2,216 133,529 28 1,480 2,244 135,009 Agency commercial mortgage-backed securities 1,709 53,156 — — 1,709 53,156 Corporate bonds 4 4,461 463 16,571 467 21,032 Other bonds and obligations 11 3,018 — — 11 3,018 Total debt securities 8,334 626,517 491 18,051 8,825 644,568 Marketable equity securities 48 1,330 867 6,139 915 7,469 Total securities available for sale 8,382 627,847 1,358 24,190 9,740 652,037 Securities held to maturity Municipal bonds and obligations 2,299 69,480 — — 2,299 $ 69,480 Agency collateralized mortgage obligations 420 14,422 — — 420 $ 14,422 Agency mortgage-backed securities 257 8,505 — — 257 $ 8,505 Agency commercial mortgage-backed securities 441 10,088 — — 441 $ 10,088 Total securities held to maturity 3,417 102,495 — — 3,417 102,495 Total $ 11,799 $ 730,342 $ 1,358 $ 24,190 $ 13,157 $ 754,532 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-backed 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-backed 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

LOANS (Tables)

LOANS (Tables)	3 Months Ended
	Mar. 31, 2017
Receivables [Abstract]
Schedule of Loans	The following is a summary of total loans: March 31, 2017 December 31, 2016 (in thousands) Business Acquired Total Business Acquired Total Commercial real estate: Construction $ 281,134 $ 24,976 $ 306,110 $ 253,302 $ 34,207 $ 287,509 Single and multi-family 339,259 105,673 444,932 191,819 125,672 317,491 Other commercial real estate 1,405,948 516,373 1,922,321 1,481,223 530,215 2,011,438 Total commercial real estate 2,026,341 647,022 2,673,363 1,926,344 690,094 2,616,438 Commercial and industrial loans: Asset based lending 351,992 — 351,992 321,270 — 321,270 Other commercial and industrial loans 664,783 129,350 794,133 586,832 153,936 740,768 Total commercial and industrial loans 1,016,775 129,350 1,146,125 908,102 153,936 1,062,038 Total commercial loans 3,043,116 776,372 3,819,488 2,834,446 844,030 3,678,476 Residential mortgages: 1-4 family 1,548,762 289,665 1,838,427 1,583,794 297,355 1,881,149 Construction 11,545 712 12,257 11,178 804 11,982 Total residential mortgages 1,560,307 290,377 1,850,684 1,594,972 298,159 1,893,131 Consumer loans: Home equity 312,639 77,308 389,947 313,521 80,279 393,800 Auto and other 497,156 98,658 595,814 478,368 106,012 584,380 Total consumer loans 809,795 175,966 985,761 791,889 186,291 978,180 Total loans $ 5,413,218 $ 1,242,715 $ 6,655,933 $ 5,221,307 $ 1,328,480 $ 6,549,787
Schedule of Activity in the Accretable Yield for the Acquired Loan Portfolio that Falls Under the Review 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, Accounting for Certain Loans or Debt Securities Acquired in a Transfer: Three Months Ended March 31, (in thousands) 2017 2016 Balance at beginning of period $ 8,738 $ 6,925 Reclassification from nonaccretable difference for loans with improved cash flows 418 896 Change in cash flows that do not affect nonaccretable difference (747 ) — Reclassification to TDR — (185 ) Accretion (1,046 ) (1,172 ) Balance at end of period $ 7,363 $ 6,464
Summary of Past Due Loans	The following is a summary of past due loans at March 31, 2017 and December 31, 2016: Business Activities Loans (in thousands) 30-59 Days 60-89 Days 90 Total Past Current Total Loans Past Due > March 31, 2017 Commercial real estate: Construction $ — $ — $ — $ — $ 281,134 $ 281,134 $ — Single and multi-family 118 — 513 631 338,628 339,259 — Other commercial real estate 2,080 1,136 6,608 9,824 1,396,124 1,405,948 641 Total 2,198 1,136 7,121 10,455 2,015,886 2,026,341 641 Commercial and industrial loans: Asset based lending — — — — 351,992 351,992 — Other commercial and industrial loans 1,583 1,405 7,124 10,112 654,671 664,783 6 Total 1,583 1,405 7,124 10,112 1,006,663 1,016,775 6 Residential mortgages: 1-4 family 2,125 66 3,830 6,021 1,542,741 1,548,762 1,274 Construction — — — — 11,545 11,545 — Total 2,125 66 3,830 6,021 1,554,286 1,560,307 1,274 Consumer loans: Home equity 581 50 2,485 3,116 309,523 312,639 85 Auto and other 1,624 428 1,195 3,247 493,909 497,156 22 Total 2,205 478 3,680 6,363 803,432 809,795 107 Total $ 8,111 $ 3,085 $ 21,755 $ 32,951 $ 5,380,267 $ 5,413,218 $ 2,028 Business Activities Loans (in thousands) 30-59 Days 60-89 Days 90 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 Other 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 Acquired Loans (in thousands) 30-59 Days 60-89 Days 90 Total Past Acquired Total Loans Past Due > March 31, 2017 Commercial real estate: Construction $ — $ — $ — $ — $ — $ 24,976 $ — Single and multi-family 81 — 558 639 3,381 105,673 — Other commercial real estate 463 — 782 1,245 27,123 516,373 102 Total 544 — 1,340 1,884 30,504 647,022 102 Commercial and industrial loans: Asset based lending — — — — — — — Other commercial and industrial loans 325 128 1,228 1,681 5,282 129,350 18 Total 325 128 1,228 1,681 5,282 129,350 18 Residential mortgages: 1-4 family 674 84 1,416 2,174 7,269 289,665 — Construction — — — — — 712 — Total 674 84 1,416 2,174 7,269 290,377 — Consumer loans: Home equity 80 396 1,353 1,829 893 77,308 514 Auto and other 431 239 1,464 2,134 383 98,658 767 Total 511 635 2,817 3,963 1,276 175,966 1,281 Total $ 2,054 $ 847 $ 6,801 $ 9,702 $ 44,331 $ 1,242,715 $ 1,401 Acquired Loans (in thousands) 30-59 Days 60-89 Days 90 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 — Other 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
Summary of Information Pertaining to Non-Accrual Loans	The following is summary information pertaining to non-accrual loans at March 31, 2017 and December 31, 2016: March 31, 2017 December 31, 2016 (in thousands) Business Acquired Total Business Acquired Total Commercial real estate: Construction $ — $ — $ — $ — $ — $ — Single and multi-family 513 521 1,034 469 437 906 Other commercial real estate 5,967 717 6,684 4,212 765 4,977 Total 6,480 1,238 7,718 4,681 1,202 5,883 Commercial and industrial loans: Other commercial and industrial loans 7,118 1,127 8,245 6,285 1,155 7,440 Total 7,118 1,127 8,245 6,285 1,155 7,440 Residential mortgages: 1-4 family 2,556 1,402 3,958 2,223 1,572 3,795 Construction — — — — — — Total 2,556 1,402 3,958 2,223 1,572 3,795 Consumer loans: Home equity 2,400 838 3,238 2,675 517 3,192 Auto and other 1,173 697 1,870 952 895 1,847 Total 3,573 1,535 5,108 3,627 1,412 5,039 Total non-accrual loans $ 19,727 $ 5,302 $ 25,029 $ 16,816 $ 5,341 $ 22,157 _______________________________________ (1) At quarter end March 31, 2017 , acquired credit impaired loans accounted for $98 thousand of loans greater than 90 days past due that are not presented in the above table. (2) At December 31, 2016, acquired credit impaired loans accounted for $83 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 March 31, 2017 and December 31, 2016 were as follows: Business Activities Loans (in thousands) Commercial Commercial and Residential Consumer Total March 31, 2017 Loans receivable: Balance at end of period Individually evaluated for impairment $ 29,208 $ 6,460 $ 2,798 $ 2,380 $ 40,846 Collectively evaluated for impairment 1,997,133 1,010,315 1,557,509 807,415 5,372,372 Total $ 2,026,341 $ 1,016,775 $ 1,560,307 $ 809,795 $ 5,413,218 Business Activities Loans (in thousands) Commercial Commercial and Residential Consumer Total December 31, 2016 Loans receivable: Balance at end of year Individually evaluated for impairment $ 25,549 $ 5,705 $ 2,775 $ 2,703 $ 36,732 Collectively evaluated for impairment 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 Acquired Loans (in thousands) Commercial Commercial and Residential Consumer Total March 31, 2017 Loans receivable: Balance at end of Period Individually evaluated for impairment $ 3,325 $ 654 $ 494 $ 741 $ 5,214 Purchased credit-impaired loans 30,504 5,282 7,269 1,276 44,331 Collectively evaluated for impairment 613,193 123,414 282,614 173,949 1,193,170 Total $ 647,022 $ 129,350 $ 290,377 $ 175,966 $ 1,242,715 Acquired Loans (in thousands) Commercial Commercial and Residential Consumer Total December 31, 2016 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 for impairment 651,018 149,932 290,568 184,541 1,276,059 Total $ 690,094 $ 153,936 $ 298,159 $ 186,291 $ 1,328,480
Summary of Impaired Loans	The following is a summary of impaired loans at March 31, 2017 and December 31, 2016: Business Activities Loans March 31, 2017 (in thousands) Recorded Investment Unpaid Principal Related Allowance With no related allowance: Commercial real estate - construction $ — $ — $ — Commercial real estate - single and multifamily 151 151 — Other commercial real estate loans 20,710 20,710 — Other commercial and industrial loans 1,051 1,051 — Residential mortgages - 1-4 family 1,797 1,797 — Consumer - home equity 1,232 1,232 — Consumer - other — — — With an allowance recorded: Commercial real estate - construction $ — $ — $ — Commercial real estate - single and multifamily 181 182 1 Other commercial real estate loans 8,085 8,165 80 Other commercial and industrial loans 5,286 5,409 123 Residential mortgages - 1-4 family 865 1,001 136 Consumer - home equity 1,098 1,148 50 Consumer - other — — — Total Commercial real estate $ 29,127 $ 29,208 $ 81 Commercial and industrial loans 6,337 6,460 123 Residential mortgages 2,662 2,798 136 Consumer 2,330 2,380 50 Total impaired loans $ 40,456 $ 40,846 $ 390 Business Activities Loans December 31, 2016 (in thousands) Recorded Investment Unpaid Principal Related Allowance With no related allowance: Commercial real estate - construction $ — $ — $ — Commercial real estate - single and multifamily — — — Other commercial real estate loans 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 — Consumer - other — — — With an allowance recorded: Commercial real estate - construction $ — $ — $ — Commercial real estate - single and multifamily 179 181 2 Other commercial real estate loans 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 Consumer - other — — — Total Commercial real estate $ 25,390 $ 25,548 $ 158 Commercial and industrial loans 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 Acquired Loans March 31, 2017 (in thousands) Recorded Investment Unpaid Principal Related Allowance With no related allowance: Commercial real estate - single and multifamily $ 521 $ 521 $ — Other commercial real estate loans 403 403 — Other commercial and industrial loans 298 298 — Residential mortgages - 1-4 family 397 397 — With an allowance recorded: Commercial real estate - single and multifamily $ 883 $ 911 $ 28 Other commercial real estate loans 1,455 1,490 35 Other commercial and industrial loans 350 356 6 Residential mortgages - 1-4 family 93 97 4 Consumer - home equity 672 741 69 Total x Commercial real estate $ 3,262 $ 3,325 $ 63 Commercial and industrial loans 648 654 6 Residential mortgages 490 494 4 Consumer 672 741 69 Total impaired loans $ 5,072 $ 5,214 $ 142 Acquired Loans December 31, 2016 (in thousands) Recorded Investment Unpaid Principal Related Allowance With no related allowance: Commercial real estate - single and multifamily $ — $ — $ — Other commercial real estate loans 547 547 — Other commercial and industrial loans — — — Residential mortgages - 1-4 family 208 208 — 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 loans 576 635 59 Residential mortgages 297 308 11 Consumer 292 406 114 Total impaired loans $ 5,171 $ 5,605 $ 434
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 March 31, 2017 and 2016: Business Activities Loans Three Months Ended March 31, 2017 Three Months Ended March 31, 2016 (in thousands) Average Recorded Cash Basis Interest Average Recorded Cash Basis Interest With no related allowance: Commercial real estate - construction $ — $ — $ — $ — Commercial real estate - single and multifamily 153 — — — Other commercial real estate loans 20,756 217 3,166 — Other commercial and industrial loans 1,350 5 734 13 Residential mortgages - 1-4 family 2,025 18 1,520 2 Consumer - home equity 1,574 19 663 4 Consumer - other — — 1 — With an allowance recorded: Commercial real estate - construction $ — $ — $ 2,000 $ 28 Commercial real estate - single and multifamily 181 — 97 1 Other commercial real estate loans 7,011 71 8,143 81 Other commercial and industrial loans 5,876 143 5,962 84 Residential mortgages - 1-4 family 939 14 1,619 19 Consumer - home equity 1,149 8 1,197 8 Consumer - other — — 106 1 Total Commercial real estate $ 28,101 $ 288 $ 13,406 $ 110 Commercial and industrial loans 7,226 148 6,696 97 Residential mortgages 2,964 32 3,139 21 Consumer loans 2,723 27 1,967 13 Total impaired loans $ 41,014 $ 495 $ 25,208 $ 241 Acquired Loans Three Months Ended March 31, 2017 Three Months Ended March 31, 2016 (in thousands) Average Recorded Cash Basis Interest Average Recorded Cash Basis Interest With no related allowance: Commercial real estate - construction $ — $ — $ — $ — Commercial real estate - single and multifamily 721 31 126 2 Other commercial real estate loans 1,272 21 760 — Other commercial and industrial loans 403 — 261 — Residential mortgages - 1-4 family 409 6 12 — Consumer - home equity — — — — Consumer - other — — 169 1 With an allowance recorded: Commercial real estate - construction $ — $ — $ — $ — Commercial real estate - single and multifamily 915 12 825 11 Other commercial real estate loans 1,494 19 2,569 44 Other commercial and industrial loans 362 13 53 — Residential mortgages - 1-4 family 98 1 334 3 Consumer - home equity 743 4 309 2 Consumer - other — — — — Total Other commercial real estate loans $ 4,402 $ 83 $ 4,280 $ 57 Commercial and industrial loans 765 13 314 — Residential mortgages 507 7 346 3 Consumer loans 743 4 478 3 Total impaired loans $ 6,417 $ 107 $ 5,418 $ 63
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 identified during the three months ended March 31, 2017 . The table includes 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 three months ended March 31, 2017 were attributable to interest rate concessions, maturity date extensions, modified payment terms, reamortization, and accelerated maturity. The modifications for the three months ending March 31, 2016 were attributable to interest rate concessions, maturity date extensions, modified payment terms, reamortization, and accelerated maturity. Three Months Ended March 31, 2017 (Dollars in thousands) Number of Pre-Modification Post-Modification Troubled Debt Restructurings Commercial - Other 6 $ 2,832 $ 2,333 Commercial and industrial - Other 1 24 24 Residential - 1-4 Family 2 205 188 Consumer - Home Equity 1 53 53 Total 10 $ 3,114 $ 2,598 Three Months Ended March 31, 2016 (Dollars in thousands) Number of Pre-Modification Post-Modification Troubled Debt Restructurings Commercial - Other 2 $ 1,049 $ 1,049 Commercial and industrial - Other 2 151 151 Total 4 $ 1,200 $ 1,200 The following table discloses the recorded investments and numbers of modifications for TDRs where a concession has been made, that then defaulted in the respective reporting period. For the three months ended March 31, 2016, there were no loans that were restructured that had subsequently defaulted during the period. Modifications that Subsequently Defaulted Three Months Ended March 31, 2017 (Dollars in thousands) Number of Contracts Recorded Investment Troubled Debt Restructurings Commercial - Other 1 $ 113 Commercial and industrial- Other 1 $ 101
Schedule of TDR Activity	The following table presents the Company’s TDR activity for the three months ended March 31, 2017 and 2016: Three Months Ended March 31, (in thousands) 2017 2016 Balance at beginning of the period $ 33,829 $ 22,048 Principal payments (888 ) (342 ) TDR status change (1) — 2,235 Other reductions/increases (2) (840 ) (1,487 ) Newly identified TDRs 2,598 1,200 Balance at end of the period $ 34,699 $ 23,654 _________________________________ (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 and charge-offs and advances to loans.

LOAN LOSS ALLOWANCE (Tables)

LOAN LOSS ALLOWANCE (Tables)	3 Months Ended
	Mar. 31, 2017
Receivables [Abstract]
Schedule of Activity in the Allowance for Loan Losses	Activity in the allowance for loan losses for the three months ended March 31, 2017 and 2016 was as follows: At or for the three months ended March 31, 2017 Business Activities Loans (In thousands) Commercial real estate Commercial and industrial loans Residential mortgages Consumer Unallocated Total Balance at beginning of period $ 16,405 $ 9,371 $ 7,752 $ 5,447 $ 254 $ 39,229 Charged-off loans 124 1,270 235 687 — 2,316 Recoveries on charged-off loans 58 16 15 86 — 175 Provision/(releases) for loan losses (224 ) 3,616 244 568 171 4,375 Balance at end of period $ 16,115 $ 11,733 $ 7,776 $ 5,414 $ 425 $ 41,463 Individually evaluated for impairment 80 123 137 50 — 390 Collectively evaluated for impairment 16,035 11,610 7,639 5,364 425 41,073 Total $ 16,115 $ 11,733 $ 7,776 $ 5,414 $ 425 $ 41,463 At or for the three months ended March 31, 2016 Business Activities Loans (In thousands) Commercial real estate Commercial and industrial loans Residential mortgages Consumer Unallocated Total Balance at beginning of period $ 14,508 $ 7,317 $ 7,566 $ 4,956 $ 227 $ 34,574 Charged-off loans 1,044 965 547 401 — 2,957 Recoveries on charged-off loans 128 74 — 67 — 269 Provision/(releases) for loan losses 2,451 2,203 42 (553 ) (531 ) 3,612 Balance at end of period $ 16,043 $ 8,629 $ 7,061 $ 4,069 $ (304 ) $ 35,498 Individually evaluated for impairment 340 130 151 56 — 677 Collectively evaluated for impairment 15,703 8,499 6,910 4,013 (304 ) 34,821 Total $ 16,043 $ 8,629 $ 7,061 $ 4,069 $ (304 ) $ 35,498 At or for the three months ended March 31, 2017 Acquired Loans (In thousands) Commercial real estate Commercial and industrial loans Residential mortgages Consumer Unallocated Total Balance at beginning of period $ 2,303 $ 1,164 $ 766 $ 536 $ — $ 4,769 Charged-off loans 577 436 143 151 — 1,307 Recoveries on charged-off loans 10 55 39 55 — 159 Provision for loan losses 392 271 44 13 — 720 Balance at end of period $ 2,128 $ 1,054 $ 706 $ 453 $ — $ 4,341 Individually evaluated for impairment 63 6 4 69 — 142 Purchased credit-impaired loans — — — — — — Collectively evaluated for impairment 2,065 1,048 702 384 — 4,199 Total $ 2,128 $ 1,054 $ 706 $ 453 $ — $ 4,341 At or for the three months ended March 31, 2016 Acquired Loans (In thousands) Commercial real estate Commercial and industrial loans Residential mortgages Consumer Unallocated Total Balance at beginning of period $ 1,903 $ 1,330 $ 976 $ 525 $ — $ 4,734 Charged-off loans 126 25 310 286 — 747 Recoveries on charged-off loans (1 ) 69 83 25 — 176 Provision for loan losses 187 (99 ) 145 161 — 394 Balance at end of period $ 1,963 $ 1,275 $ 894 $ 425 $ — $ 4,557 Individually evaluated for impairment 182 2 37 24 — 245 Purchased credit-impaired loans — — — — — — Collectively evaluated for impairment 1,781 1,273 857 401 — 4,312 Total $ 1,963 $ 1,275 $ 894 $ 425 $ — $ 4,557
Schedule of Loans by Risk Rating	The following tables present the Company’s loans by risk rating at March 31, 2017 and December 31, 2016: Business Activities Loans Commercial Real Estate Credit Risk Profile by Creditworthiness Category Construction Single and multi-family Other Total commercial real estate (In thousands) March 31, 2017 December 31, 2016 March 31, 2017 December 31, 2016 March 31, 2017 December 31, 2016 March 31, 2017 December 31, 2016 Grade: Pass $ 281,134 $ 253,302 $ 330,460 $ 189,310 $ 1,352,475 $ 1,434,762 $ 1,964,069 $ 1,877,374 Special mention — — 6,046 334 10,642 5,827 16,688 6,161 Substandard — — 2,753 2,175 42,795 40,598 45,548 42,773 Doubtful — — — — 36 36 36 36 Total $ 281,134 $ 253,302 $ 339,259 $ 191,819 $ 1,405,948 $ 1,481,223 $ 2,026,341 $ 1,926,344 Commercial and Industrial Loans Credit Risk Profile by Creditworthiness Category Asset based lending Other Total comm. and industrial loans (In thousands) March 31, 2017 December 31, 2016 March 31, 2017 December 31, 2016 March 31, 2017 December 31, 2016 Grade: Pass $ 351,992 $ 321,270 $ 641,461 $ 569,704 $ 993,453 $ 890,974 Special mention — — 3,882 123 3,882 123 Substandard — — 16,315 13,825 16,315 13,825 Doubtful — — 3,125 3,180 3,125 3,180 Total $ 351,992 $ 321,270 $ 664,783 $ 586,832 $ 1,016,775 $ 908,102 Residential Mortgages Credit Risk Profile by Internally Assigned Grade 1-4 family Construction Total residential mortgages (In thousands) March 31, 2017 December 31, 2016 March 31, 2017 December 31, 2016 March 31, 2017 December 31, 2016 Grade: Pass $ 1,544,866 $ 1,578,913 $ 11,545 $ 11,178 $ 1,556,411 $ 1,590,091 Special mention 66 701 — — 66 701 Substandard 3,830 4,179 — — 3,830 4,179 Total $ 1,548,762 $ 1,583,793 $ 11,545 $ 11,178 $ 1,560,307 $ 1,594,971 Consumer Loans Credit Risk Profile Based on Payment Activity Home equity Auto and other Total consumer loans (In thousands) March 31, 2017 December 31, 2016 March 31, 2017 December 31, 2016 March 31, 2017 December 31, 2016 Performing $ 310,239 $ 310,846 $ 495,983 $ 477,416 $ 806,222 $ 788,262 Nonperforming 2,400 2,675 1,173 952 3,573 3,627 Total $ 312,639 $ 313,521 $ 497,156 $ 478,368 $ 809,795 $ 791,889 Acquired Loans Commercial Real Estate Credit Risk Profile by Creditworthiness Category Construction Single and multi-family Other Total commercial real estate (In thousands) March 31, 2017 December 31, 2016 March 31, 2017 December 31, 2016 March 31, 2017 December 31, 2016 March 31, 2017 December 31, 2016 Grade: Pass $ 24,276 $ 33,461 $ 100,195 $ 119,414 $ 474,137 $ 496,562 $ 598,608 $ 649,437 Special mention — — 845 907 11,885 1,622 12,730 2,529 Substandard 700 746 4,633 5,351 30,351 32,031 35,684 38,128 Total $ 24,976 $ 34,207 $ 105,673 $ 125,672 $ 516,373 $ 530,215 $ 647,022 $ 690,094 Commercial and Industrial Loans Credit Risk Profile by Creditworthiness Category Asset based lending Other Total comm. and industrial loans (In thousands) March 31, 2017 December 31, 2016 March 31, 2017 December 31, 2016 March 31, 2017 December 31, 2016 Grade: Pass $ — $ — $ 120,511 $ 147,102 $ 120,511 $ 147,102 Special mention — — 1,421 1,260 1,421 1,260 Substandard — — 7,418 5,574 7,418 5,574 Total $ — $ — $ 129,350 $ 153,936 $ 129,350 $ 153,936 Residential Mortgages Credit Risk Profile by Internally Assigned Grade 1-4 family Construction Total residential mortgages (In thousands) March 31, 2017 December 31, 2016 March 31, 2017 December 31, 2016 March 31, 2017 December 31, 2016 Grade: Pass $ 286,908 $ 294,983 $ 712 $ 804 $ 287,620 $ 295,787 Special mention 88 343 — — 88 343 Substandard 2,669 2,029 — — 2,669 2,029 Total $ 289,665 $ 297,355 $ 712 $ 804 $ 290,377 $ 298,159 Consumer Loans Credit Risk Profile Based on Payment Activity Home equity Auto and other Total consumer loans (In thousands) March 31, 2017 December 31, 2016 March 31, 2017 December 31, 2016 March 31, 2017 December 31, 2016 Performing $ 76,470 $ 79,762 $ 97,961 $ 105,117 $ 174,431 $ 184,879 Nonperforming 838 517 697 895 1,535 1,412 Total $ 77,308 $ 80,279 $ 98,658 $ 106,012 $ 175,966 $ 186,291
Summary of Information About Total Loans Rated Special Mention or Lower	The following table summarizes information about total loans rated Special Mention or lower as of March 31, 2017 and December 31, 2016. 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. March 31, 2017 December 31, 2016 (In thousands) Business Acquired Loans Total Business Acquired Loans Total Non-Accrual $ 19,726 $ 5,399 $ 25,125 $ 16,816 $ 5,424 $ 22,240 Substandard Accruing 52,809 43,269 96,078 51,125 44,177 95,302 Total Classified 72,535 48,668 121,203 67,941 49,601 117,542 Special Mention 21,114 14,856 35,970 7,479 4,323 11,802 Total Criticized $ 93,649 $ 63,524 $ 157,173 $ 75,420 $ 53,924 $ 129,344

DEPOSITS (Tables)

DEPOSITS (Tables)	3 Months Ended
	Mar. 31, 2017
Deposits [Abstract]
Summary of Time Deposits	A summary of time deposits is as follows: (In thousands) March 31, December 31, Time less than $250,000 $ 2,093,791 $ 2,015,332 Time $250,000 or more 325,477 318,211 Total time deposits $ 2,419,268 $ 2,333,543

BORROWED FUNDS (Tables)

BORROWED FUNDS (Tables)	3 Months Ended
	Mar. 31, 2017
Debt Disclosure [Abstract]
Schedule of Borrowed Funds	Borrowed funds at March 31, 2017 and December 31, 2016 are summarized, as follows: March 31, 2017 December 31, 2016 Weighted Weighted Average Average (dollars in thousands) Principal Rate Principal Rate Short-term borrowings: Advances from the FHLB $ 1,136,801 0.93 % $ 1,072,044 0.71 % Other borrowings — — 10,000 2.42 Total short-term borrowings: 1,136,801 0.93 1,082,044 0.72 Long-term borrowings: Advances from the FHLB and other borrowings 157,920 1.43 142,792 1.53 Subordinated borrowings 73,742 7.00 73,697 7.00 Junior subordinated borrowings 15,464 2.90 15,464 2.77 Total long-term borrowings: 247,126 3.19 231,953 3.35 Total $ 1,383,927 1.33 % $ 1,313,997 1.19 %
Summary of Maturities of FHLBB Advances	A summary of maturities of FHLB advances as of March 31, 2017 is as follows: March 31, 2017 Weighted Average (in thousands, except rates) Principal Rate Fixed rate advances maturing: 2017 $ 1,160,800 0.95 % 2018 118,879 1.17 2019 — — 2020 5,184 1.94 2021 and beyond 9,858 2.73 Total FHLB advances $ 1,294,721 0.99 %

CAPITAL RATIOS AND SHAREHOLDE28

CAPITAL RATIOS AND SHAREHOLDERS' EQUITY (Tables)	3 Months Ended
	Mar. 31, 2017
Stockholders' Equity Note [Abstract]
Schedule of Actual and Required Capital Ratios	The actual and required capital ratios were as follows: March 31, Regulatory December 31, Regulatory Company (consolidated) Total capital to risk weighted assets 11.8 % 10.0 % 11.9 % 10.0 % Common equity tier 1 capital to risk weighted assets 9.9 6.5 9.9 6.5 Tier 1 capital to risk weighted assets 10.1 8.0 10.1 8.0 Tier 1 capital to average assets 7.8 5.0 7.9 5.0 Bank Total capital to risk weighted assets 11.1 % 10.0 % 11.2 % 10.0 % Common equity tier 1 capital to risk weighted assets 9.9 6.5 10.0 6.5 Tier 1 capital to risk weighted assets 9.9 8.0 10.0 8.0 Tier 1 capital to average assets 7.7 5.0 7.8 5.0
Schedule of Components of Accumulated Other Comprehensive Income	Components of accumulated other comprehensive income is as follows: (In thousands) March 31, December 31, Other accumulated comprehensive income, before tax: Net unrealized holding gain on AFS securities $ 15,743 $ 25,176 Net unrealized loss on cash flow hedging derivatives — (6,573 ) Net unrealized holding loss on pension plans (2,954 ) (2,954 ) Income taxes related to items of accumulated other comprehensive income: Net unrealized holding gain on AFS securities (6,095 ) (9,636 ) Net unrealized loss on cash flow hedging derivatives — 2,589 Net unrealized holding loss on pension plans 1,164 1,164 Accumulated other comprehensive income $ 7,858 $ 9,766
Schedule of Components of Other Comprehensive Income	The following table presents the components of other comprehensive income for the three months ended March 31, 2017 and 2016 : (In thousands) Before Tax Tax Effect Net of Tax Three Months Ended March 31, 2017 Net unrealized holding gain on AFS securities: x Net unrealized gains arising during the period $ 3,137 $ (1,173 ) $ 1,964 Less: reclassification adjustment for gains realized in net income 12,570 (4,713 ) 7,857 Net unrealized holding (loss) on AFS securities (9,433 ) 3,540 (5,893 ) Net unrealized loss on cash flow hedging derivatives: Net unrealized (loss) arising during the period (449 ) 180 (269 ) Less: reclassification adjustment for (losses) realized in net income (7,022 ) 2,768 (4,254 ) Net unrealized gain on cash flow hedging derivatives 6,573 (2,588 ) 3,985 Other comprehensive (loss) $ (2,860 ) $ 952 $ (1,908 ) Three Months Ended March 31, 2016 Net unrealized holding gain on AFS securities: Net unrealized gains arising during the period $ 17,742 $ (6,869 ) $ 10,873 Less: reclassification adjustment for gains realized in net income 36 (13 ) 23 Net unrealized holding gain on AFS securities 17,706 (6,856 ) 10,850 Net unrealized loss on cash flow hedging derivatives: Net unrealized (loss) arising during the period (4,914 ) 1,972 (2,942 ) Less: reclassification adjustment for (losses) realized in net income (408 ) 164 (244 ) Net unrealized (loss) on cash flow hedging derivatives (4,506 ) 1,808 (2,698 ) Other comprehensive income $ 13,200 $ (5,048 ) $ 8,152
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 three months ended March 31, 2017 and 2016 : (in thousands) Net unrealized holding gain on AFS Securities Net loss on effective cash flow hedging derivatives Net unrealized holding loss on pension plans Total Three Months Ended March 31, 2017 Balance at Beginning of Period $ 15,541 $ (3,985 ) $ (1,790 ) $ 9,766 Other comprehensive gain (loss) before reclassifications 1,964 (269 ) — 1,695 Less: amounts reclassified from accumulated other comprehensive income (loss) 7,857 (4,254 ) — 3,603 Total other comprehensive (loss) income (5,893 ) 3,985 — (1,908 ) Balance at End of Period $ 9,648 $ — $ (1,790 ) $ 7,858 Three Months Ended March 31, 2016 Balance at Beginning of Period $ 3,880 $ (5,108 ) $ (2,077 ) $ (3,305 ) Other comprehensive gain (loss) before reclassifications 10,873 (2,942 ) — 7,931 Less: amounts reclassified from accumulated other comprehensive income (loss) 23 (244 ) — (221 ) Total other comprehensive income (loss) 10,850 (2,698 ) — 8,152 Balance at End of Period $ 14,730 $ (7,806 ) $ (2,077 ) $ 4,847
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 three months ended March 31, 2017 and 2016 : Affected Line Item in the Three Months Ended March 31, Statement where Net Income (in thousands) 2017 2016 is Presented Realized gains on AFS securities: $ 12,570 $ 36 Non-interest income (4,713 ) (13 ) Tax expense 7,857 23 Net of tax Realized (losses) on cash flow hedging derivatives: (393 ) (408 ) Interest expense (6,629 ) — Non-interest expense 2,768 164 Tax benefit (4,254 ) (244 ) Net of tax Total reclassifications for the period $ 3,603 $ (221 ) Net of tax

EARNINGS PER SHARE (Tables)

EARNINGS PER SHARE (Tables)	3 Months Ended
	Mar. 31, 2017
Earnings Per Share [Abstract]
Schedule of Earnings Per Share	Earnings per share have been computed based on the following (average diluted shares outstanding are calculated using the treasury stock method): Three Months Ended March 31, (In thousands, except per share data) 2017 2016 Net income $ 15,460 $ 16,001 Average number of common shares issued 36,732 32,162 Less: average number of treasury shares 1,020 1,138 Less: average number of unvested stock award shares 432 513 Average number of basic common shares outstanding 35,280 30,511 Plus: dilutive effect of unvested stock award shares 126 119 Plus: dilutive effect of stock options outstanding 46 58 Average number of diluted common shares outstanding 35,452 30,688 Earnings per share: Basic $ 0.44 $ 0.52 Diluted $ 0.44 $ 0.52

STOCK-BASED COMPENSATION PLANS

STOCK-BASED COMPENSATION PLANS (Tables)	3 Months Ended
	Mar. 31, 2017
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Summary of Activity in the Stock Award and Stock Option Plans	A combined summary of activity in the Company’s stock award and stock option plans for the three months ended March 31, 2017 is presented in the following table: Non-Vested Stock Awards Outstanding Stock Options Outstanding (Shares in thousands) Number of Shares Weighted-Average Grant Date Fair Value Number of Shares Weighted-Average Exercise Price December 31, 2016 448 $ 26.28 109 $ 15.72 Granted 81 35.47 — — Stock options exercised — — (6 ) 14.23 Stock awards vested (101 ) 25.35 — — Forfeited (2 ) 26.31 — — Expired — — (10 ) 33.46 March 31, 2017 426 $ 28.49 93 $ 13.91 Exercisable options at March 31, 2017 93 $ 13.91

DERIVATIVE INSTRUMENTS AND HE31

DERIVATIVE INSTRUMENTS AND HEDGING ACTIVITIES (Tables)	3 Months Ended
	Mar. 31, 2017
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Schedule of Interest Rate Swap Agreements and Non-Hedging Derivative Assets and Liabilities	Information about derivative assets and liabilities at March 31, 2017 , follows: Weighted Weighted Average Rate Estimated Notional Average Contract Fair Value Amount Maturity Received pay rate Asset (Liability) (In thousands) (In years) (In thousands) Cash flow hedges: Interest rate swaps on FHLB borrowings $ — 0 — % — % $ — Total cash flow hedges — — Economic hedges: Interest rate swap on tax advantaged economic development bond 11,230 12.7 1.15 % 5.09 % (1,899 ) Interest rate swaps on loans with commercial loan customers 706,862 6.2 2.57 % 4.20 % (4,624 ) Reverse interest rate swaps on loans with commercial loan customers 706,862 6.2 4.20 % 2.57 % 4,787 Risk participation agreements with dealer banks 92,708 10.7 (13 ) Forward sale commitments 321,234 0.2 (1,251 ) Total economic hedges 1,838,896 (3,000 ) Non-hedging derivatives: Commitments to lend 274,843 0.2 8,061 Total non-hedging derivatives 274,843 8,061 Total $ 2,113,739 $ 5,061 Information about derivative assets and liabilities at December 31, 2016 , follows: Weighted Weighted Average Rate Estimated Notional Average Contract Fair Value Amount Maturity Received pay rate Asset (Liability) (In thousands) (In years) (In thousands) Cash flow hedges: Interest rate swaps on FHLB 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 )
Schedule of Amounts Included in the Consolidated Statements of Income and in the Other Comprehensive Income Section of the Consolidated Statements of 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: Three Months Ended March 31, (In thousands) 2017 2016 Interest rate swaps on FHLB borrowings: Unrealized (loss) recognized in accumulated other comprehensive loss $ (449 ) $ (4,914 ) Less: reclassification of unrealized (loss) from accumulated other comprehensive income to interest expense (393 ) (408 ) Less: reclassification of unrealized (loss) from accumulated other comprehensive income to other non-interest expense (6,629 ) — Net tax (expense) benefit on items recognized in accumulated other comprehensive income (2,589 ) 1,808 Other comprehensive gain (loss) recorded in accumulated other comprehensive income, net of reclassification adjustments and tax effects $ 3,984 $ (2,698 )
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: Three Months Ended March 31, (In thousands) 2017 2016 Economic hedges Interest rate swap on industrial revenue bond: Unrealized gain (loss) recognized in other non-interest income $ 122 $ (539 ) Interest rate swaps on loans with commercial loan customers: Unrealized gain (loss) recognized in other non-interest income 1,098 (13,597 ) Reverse interest rate swaps on loans with commercial loan customers: Unrealized gain (loss) recognized in other non-interest income (1,098 ) 13,597 (Unfavorable) Favorable change in credit valuation adjustment recognized in other non-interest income (162 ) (61 ) Risk participation agreements: Unrealized (loss) gain recognized in other non-interest income (18 ) 83 Forward commitments: Unrealized (loss) gain recognized in other non-interest income (1,251 ) (447 ) Realized gain (loss) in other non-interest income (2,906 ) (383 ) Non-hedging derivatives Commitments to lend Unrealized gain recognized in other non-interest income $ 8,061 $ 802 Realized gain in other non-interest income 8,774 849
Schedule of Assets Subject to an Enforceable Master Netting Arrangement	Offsetting of Financial Assets and Derivative Assets Gross Amounts of Gross Amounts Offset in the Net Amounts of Assets Presented in the Gross Amounts Not Offset in the Statements of Condition Recognized Statements of Statements of Financial Cash (in thousands) Assets Condition Condition Instruments Collateral Received Net Amount March 31, 2017 Interest Rate Swap Agreements: Institutional counterparties $ 41 $ — $ 41 $ — $ — $ 41 Commercial counterparties 9,743 — 9,743 — — 9,743 Total $ 9,784 $ — $ 9,784 $ — $ — $ 9,784 Offsetting of Financial Assets and Derivative Assets Gross Amounts of Gross Amounts Offset in the Net Amounts of Assets Presented in the Gross Amounts Not Offset in the Statements of Condition Recognized Statements of Statements of Financial Cash (in thousands) Assets Condition Condition Instruments Collateral Received Net Amount 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
Schedule of Liabilities Subject to an Enforceable Master Netting Arrangement	Offsetting of Financial Liabilities and Derivative Liabilities Gross Amounts of Gross Amounts Offset in the Net Amounts of Liabilities Presented in the Gross Amounts Not Offset in the Statements of Condition Recognized Statements of Statements of Financial Cash (in thousands) Liabilities Condition Condition Instruments Collateral Pledged Net Amount March 31, 2017 Interest Rate Swap Agreements: Institutional counterparties $ (11,740 ) $ 5,164 $ (6,576 ) $ 6,576 $ — $ — Commercial counterparties (4,958 ) 2 (4,956 ) — — (4,956 ) Total $ (16,698 ) $ 5,166 $ (11,532 ) $ 6,576 $ — $ (4,956 ) Offsetting of Financial Liabilities and Derivative Liabilities Gross Amounts of Gross Amounts Offset in the Net Amounts of Liabilities Presented in the Gross Amounts Not Offset in the Statements of Condition Recognized Statements of Statements of Financial Cash (in thousands) Liabilities Condition Condition Instruments Collateral Pledged Net Amount 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 )

FAIR VALUE MEASUREMENTS (Tables

FAIR VALUE MEASUREMENTS (Tables)	3 Months Ended
	Mar. 31, 2017
Quantitative information about the significant unobservable inputs within Level 3
Summary of Financial 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 financial assets and financial liabilities measured at fair value on a recurring basis as of March 31, 2017 and December 31, 2016 , segregated by the level of the valuation inputs within the fair value hierarchy utilized to measure fair value. March 31, 2017 Level 1 Level 2 Level 3 Total (In thousands) Inputs Inputs Inputs Fair Value Trading security $ — $ — $ 12,966 $ 12,966 Available-for-sale securities: Municipal bonds and obligations — 120,591 — 120,591 Agency collateralized mortgage obligations — 752,077 — 752,077 Agency residential mortgage-backed securities — 231,151 — 231,151 Agency commercial mortgage-backed securities — 63,377 — 63,377 Corporate bonds — 60,496 — 60,496 Trust preferred securities — 11,788 — 11,788 Other bonds and obligations — 10,862 — 10,862 Marketable equity securities 43,008 333 — 43,341 Loans held for sale — 89,741 — 89,741 Derivative assets — 14,897 8,061 22,958 Other assets — — 976 976 Derivative liabilities 1,229 16,645 22 17,896 December 31, 2016 Level 1 Level 2 Level 3 Total (In thousands) Inputs Inputs Inputs Fair Value 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
Schedule of Loans Held for Sale	Aggregate Fair Value March 31, 2017 Aggregate Aggregate Less Aggregate (In thousands) Fair Value Unpaid Principal Unpaid Principal Loans Held for Sale $ 89,741 $ 86,653 $ 3,088 Aggregate Fair Value December 31, 2016 Aggregate Aggregate Less Aggregate (In thousands) Fair Value Unpaid Principal Unpaid Principal Loans Held for Sale $ 120,673 $ 118,178 $ 2,495
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 and liabilities that were measured at fair value on a recurring basis for the three months ended March 31, 2017 and 2016 . Assets (Liabilities) Securities Capitalized Trading Available Commitments Forward Servicing (In thousands) Security for Sale to Lend Commitments Rights Three Months Ended March 31, 2017 December 31, 2016 $ 13,229 $ — $ 4,738 $ 100 $ 798 Unrealized (loss) gain, net recognized in other non-interest income (106 ) — 17,302 (122 ) (2 ) Paydown of trading security (157 ) — — — — Transfers to Level 2 — — — — — Transfers to held for sale loans — — (13,979 ) — — Additions to servicing rights — — — — 180 March 31, 2017 $ 12,966 $ — $ 8,061 $ (22 ) $ 976 Unrealized gains (losses) relating to instruments still held at March 31, 2017 $ 1,736 $ — $ 8,061 $ (22 ) $ — Assets (Liabilities) Securities Interest Rate Capitalized Trading Available Lock Forward Servicing (In thousands) Security for Sale Commitments Commitments Rights Three Months Ended March 31, 2016 December 31, 2015 $ 14,189 $ 708 $ 323 $ 9 $ — Unrealized gain, net recognized in other non-interest income 433 — 1,206 (152 ) — Paydown of trading account security (148 ) — — — — Transfers to Level 2 — (708 ) — — — Transfers to held for sale loans — — (727 ) — — Additions to servicing rights $ — $ — $ — $ — $ — March 31, 2016 $ 14,474 $ — $ 802 $ (143 ) $ — Unrealized gains (losses) relating to instruments still held at March 31, 2016 $ 2,637 $ — $ 802 $ (143 ) $ —
Summary of Applicable Non-Recurring Fair Value Measurements	Quantitative information about the significant unobservable inputs within Level 3 non-recurring assets is as follows: Fair Value (in thousands) March 31, 2017 Valuation Techniques Unobservable Inputs Range (Weighted Average) (a) Assets Impaired loans $ 18,968 Appraised value of collateral Discounted cash flow - loss severity 0.24% to 19.09% (3.61%) Appraised value $22.70 to $2,221.20 ($1,017.60) Capitalized servicing rights 11,766 Discounted cash flow Constant prepayment rate (CPR) 7.33% to 13.12% (9.90%) Discount rate 10.00% to 12.50% (11.17%) Other real estate owned 71 Appraised value of collateral Appraised value $94.00 to $175.00 ($134.90) Total $ 30,805 (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. Fair Value (in thousands) December 31, 2016 Valuation Techniques Unobservable Inputs Range (Weighted Average) (a) Assets Impaired loans $ 17,761 Appraised value of collateral Discounted cash flow - loss severity 0.00% 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 Appraised value of collateral Appraised value $101 to $129 ($122) Total $ 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.
Summary of Estimated Fair Values, and Related Carrying Amounts, of Financial Instruments	The following tables summarize the estimated fair values, and related carrying amounts, of the Company’s financial instruments. Certain financial instruments and all non-financial instruments are excluded. Accordingly, the aggregate fair value amounts presented may not necessarily represent the underlying fair value of the Company. March 31, 2017 Carrying Fair (In thousands) Amount Value Level 1 Level 2 Level 3 Financial Assets Cash and cash equivalents $ 93,343 $ 93,343 $ 93,343 $ — $ — Trading security 12,966 12,966 — — 12,966 Securities available for sale 1,293,683 1,293,683 43,008 1,250,675 — Securities held to maturity 331,179 334,866 — 299,751 35,115 FHLB bank stock and restricted securities 76,407 76,407 — 76,407 — Net loans 6,610,129 6,642,677 — — 6,642,677 Loans held for sale 89,741 89,741 — 89,741 — Accrued interest receivable 27,599 27,599 — 27,599 — Cash surrender value of bank-owned life insurance policies 139,914 139,914 — 139,914 — Derivative assets 22,958 22,958 — 14,897 8,061 Assets held for sale 322 322 — 322 — Financial Liabilities Total deposits $ 6,656,054 $ 6,659,280 $ — $ 6,659,280 $ — Short-term debt 1,136,801 1,136,621 — 1,136,621 — Long-term Federal Home Loan Bank advances 157,920 157,884 — 157,884 — Subordinated borrowings 89,206 97,623 — 97,623 — Derivative liabilities 17,896 17,896 1,229 16,645 22 December 31, 2016 Carrying Fair (In thousands) Amount Value 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 bank stock and restricted 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 Federal Home Loan Bank advances 142,792 143,151 — 143,151 — Subordinated borrowings 89,161 96,973 — 96,973 — Derivative liabilities 24,420 24,420 — 24,420 —
Recurring
Quantitative information about the significant unobservable inputs within Level 3
Schedule of Quantitative Information About the Significant Unobservable Inputs Within Level 3	Quantitative information about the significant unobservable inputs within Level 3 recurring assets and liabilities is as follows: Fair Value Significant Unobservable Input (In thousands) March 31, 2017 Valuation Techniques Unobservable Inputs Value Assets (Liabilities) Trading Security $ 12,966 Discounted Cash Flow Discount Rate 2.68 % Forward Commitments 8,061 Historical Trend Closing Ratio 79.68 % Pricing Model Origination Costs, per loan $ 3,692 Commitments to Lend 22 Historical Trend Closing Ratio 79.68 % Pricing Model Origination Costs, per loan $ 3,692 Capitalized Servicing Rights 976 Discounted Cash Flow Constant Prepayment rate (CPR) 10.30 % Discount Rate 11.00 % Total $ 22,025 Fair Value Significant Unobservable Input (In thousands) December 31, 2016 Valuation Techniques Unobservable Inputs Value Assets (Liabilities) 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
Non-recurring
Quantitative information about the significant unobservable inputs within Level 3
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 at fair value on a non-recurring basis. March 31, 2017 December 31, 2016 Fair Value Measurement Date as of March 31, 2017 Level 3 Level 3 Level 3 (In thousands) Inputs Inputs Inputs Assets Impaired loans $ 18,968 $ 17,761 March 2017 Capitalized servicing rights 11,766 10,726 February/March 2017 Other real estate owned 71 151 July 2016 - Oct. 2016 Total $ 30,805 $ 28,638

NET INTEREST INCOME AFTER PRO33

NET INTEREST INCOME AFTER PROVISION FOR LOAN LOSSES (Tables)	3 Months Ended
	Mar. 31, 2017
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 months ended March 31, 2017 and 2016, respectively. Three Months Ended March 31, (In thousands) 2017 2016 Net interest income $ 66,886 $ 57,697 Provision for loan losses 5,095 4,006 Net interest income after provision for loan losses $ 61,791 $ 53,691

TRADING SECURITY (Details)

TRADING SECURITY (Details) - USD ($)	Mar. 31, 2017	Dec. 31, 2016
Trading Securities [Abstract]
Amortized cost	$ 11,200,000	$ 11,400,000
Fair value	12,966,000	$ 13,229,000
Amount of other securities in the trading portfolio	$ 0

SECURITIES AVAILABLE FOR SALE35

SECURITIES AVAILABLE FOR SALE AND HELD TO MATURITY - Summary of Securities Available for Sale and Held to Maturity (Details) - USD ($) $ in Thousands	Mar. 31, 2017	Dec. 31, 2016
Available-for-sale Debt Securities, Amortized Cost Basis [Abstract]
Available-for-sale debt securities, amortized cost basis	$ 1,251,072	$ 1,145,448
Available-for-sale debt securities, accumulated gross unrealized gain	8,095	7,234
Available-for-sale debt securities, accumulated gross unrealized loss	(8,825)	(8,686)
Available-for-sale securities, debt securities	1,250,342	1,143,996
Available-for-sale Equity Securities, Amortized Cost Basis [Abstract]
Available-for-sale equity securities, amortized cost basis	35,823	47,858
Available-for-sale equity securities, accumulated gross unrealized gain	8,433	19,296
Available-for-sale equity securities, accumulated gross unrealized loss	(915)	(1,613)
Available-for-sale securities, equity securities	43,341	65,541
Available-for-sale Securities, Fair Value to Amortized Cost Basis [Abstract]
Available-for-sale securities, amortized cost basis	1,286,895	1,193,306
Available-for-sale securities, accumulated gross unrealized gain	16,528	26,530
Available-for-sale securities, accumulated gross unrealized loss	(9,740)	(10,299)
Available for sale securities	1,293,683	1,209,537
Securities held to maturity
Held to maturity, amortized cost basis	331,179	334,368
Held to maturity securities accumulated unrecognized holding gains	7,104	6,816
Held to maturity securities, accumulated unrecognized holding loss	(3,417)	(3,504)
Securities held to maturity, fair value	334,866	337,680
Available-for-sale Securities and Held-to-maturity Securities [Abstract]
Held to maturity and available for sale securities, amortized cost basis	1,618,074	1,527,674
Held to maturity and available for sale securities, gross unrealized gain	23,632	33,346
Held to maturity and available for sale securities, gross unrealized loss	(13,157)	(13,803)
Held to maturity and available for sale securities, fair value	1,628,549	1,547,217
Municipal bonds and obligations
Available-for-sale Debt Securities, Amortized Cost Basis [Abstract]
Available-for-sale debt securities, amortized cost basis	118,170	117,910
Available-for-sale debt securities, accumulated gross unrealized gain	3,391	2,955
Available-for-sale debt securities, accumulated gross unrealized loss	(970)	(1,049)
Available-for-sale securities, debt securities	120,591	119,816
Securities held to maturity
Held to maturity, amortized cost basis	202,696	203,463
Held to maturity securities accumulated unrecognized holding gains	4,108	3,939
Held to maturity securities, accumulated unrecognized holding loss	(2,299)	(2,416)
Securities held to maturity, fair value	204,505	204,986
Agency collateralized mortgage obligations
Available-for-sale Debt Securities, Amortized Cost Basis [Abstract]
Available-for-sale debt securities, amortized cost basis	752,638	652,680
Available-for-sale debt securities, accumulated gross unrealized gain	2,863	2,522
Available-for-sale debt securities, accumulated gross unrealized loss	(3,424)	(3,291)
Available-for-sale securities, debt securities	752,077	651,911
Securities held to maturity
Held to maturity, amortized cost basis	75,311	75,655
Held to maturity securities accumulated unrecognized holding gains	1,438	1,281
Held to maturity securities, accumulated unrecognized holding loss	(420)	(411)
Securities held to maturity, fair value	76,329	76,525
Agency mortgage-backed securities
Available-for-sale Debt Securities, Amortized Cost Basis [Abstract]
Available-for-sale debt securities, amortized cost basis	232,888	230,308
Available-for-sale debt securities, accumulated gross unrealized gain	507	557
Available-for-sale debt securities, accumulated gross unrealized loss	(2,244)	(2,181)
Available-for-sale securities, debt securities	231,151	228,684
Securities held to maturity
Held to maturity, amortized cost basis	8,762	9,102
Held to maturity securities accumulated unrecognized holding gains	0	0
Held to maturity securities, accumulated unrecognized holding loss	(257)	(243)
Securities held to maturity, fair value	8,505	8,859
Agency commercial mortgage-backed securities
Available-for-sale Debt Securities, Amortized Cost Basis [Abstract]
Available-for-sale debt securities, amortized cost basis	65,003	65,673
Available-for-sale debt securities, accumulated gross unrealized gain	83	229
Available-for-sale debt securities, accumulated gross unrealized loss	(1,709)	(1,368)
Available-for-sale securities, debt securities	63,377	64,534
Securities held to maturity
Held to maturity, amortized cost basis	10,529	10,545
Held to maturity securities accumulated unrecognized holding gains	0	0
Held to maturity securities, accumulated unrecognized holding loss	(441)	(434)
Securities held to maturity, fair value	10,088	10,111
Tax advantaged economic development bonds
Securities held to maturity
Held to maturity, amortized cost basis	33,557	35,278
Held to maturity securities accumulated unrecognized holding gains	1,558	1,596
Held to maturity securities, accumulated unrecognized holding loss	0	0
Securities held to maturity, fair value	35,115	36,874
Corporate bonds
Available-for-sale Debt Securities, Amortized Cost Basis [Abstract]
Available-for-sale debt securities, amortized cost basis	60,331	56,320
Available-for-sale debt securities, accumulated gross unrealized gain	632	408
Available-for-sale debt securities, accumulated gross unrealized loss	(467)	(722)
Available-for-sale securities, debt securities	60,496	56,006
Trust preferred securities
Available-for-sale Debt Securities, Amortized Cost Basis [Abstract]
Available-for-sale debt securities, amortized cost basis	11,380	11,578
Available-for-sale debt securities, accumulated gross unrealized gain	408	368
Available-for-sale debt securities, accumulated gross unrealized loss	0	(59)
Available-for-sale securities, debt securities	11,788	11,887
Other bonds and obligations
Available-for-sale Debt Securities, Amortized Cost Basis [Abstract]
Available-for-sale debt securities, amortized cost basis	10,662	10,979
Available-for-sale debt securities, accumulated gross unrealized gain	211	195
Available-for-sale debt securities, accumulated gross unrealized loss	(11)	(16)
Available-for-sale securities, debt securities	10,862	11,158
Securities held to maturity
Held to maturity, amortized cost basis	324	325
Held to maturity securities accumulated unrecognized holding gains	0	0
Held to maturity securities, accumulated unrecognized holding loss	0	0
Securities held to maturity, fair value	$ 324	$ 325

SECURITIES AVAILABLE FOR SALE36

SECURITIES AVAILABLE FOR SALE AND HELD TO MATURITY - Schedule of Maturity of Securities (Details) - USD ($) $ in Thousands	Mar. 31, 2017	Dec. 31, 2016
Available for sale, Amortized Cost
Within 1 year	$ 279
Over 1 year to 5 years	25,458
Over 5 years to 10 years	53,862
Over 10 years	120,944
Total bonds and obligations	200,543
Marketable equity securities	35,823	$ 47,858
Mortgage-backed securities	1,050,529
Available-for-sale securities, amortized cost basis	1,286,895	1,193,306
Available for sale, Fair Value
Within 1 year	283
Over 1 year to 5 years	25,978
Over 5 years to 10 years	54,934
Over 10 years	122,542
Total bonds and obligations	203,737
Marketable equity securities	43,341	65,541
Mortgage-backed securities	1,046,605
Available for sale securities	1,293,683	1,209,537
Held to maturity, Amortized Cost
Within 1 year	1,252
Over 1 year to 5 years	19,126
Over 5 years to 10 years	16,244
Over 10 years	199,955
Total bonds and obligations	236,577
Mortgage-backed securities	94,602
Held to maturity, amortized cost basis	331,179	334,368
Held to maturity, Fair Value
Within 1 year	1,254
Over 1 year to 5 years	19,885
Over 5 years to 10 years	16,706
Over 10 years	202,099
Total bonds and obligations	239,944
Total bonds and obligations	94,922
Fair Value	$ 334,866	$ 337,680

SECURITIES AVAILABLE FOR SALE37

SECURITIES AVAILABLE FOR SALE AND HELD TO MATURITY - Summary of Securities with Unrealized Losses (Details) - USD ($) $ in Thousands	Mar. 31, 2017	Dec. 31, 2016
Available-for-sale Securities, Continuous Unrealized Loss Position, Accumulated Loss [Abstract]
Available for sale securities, less than twelve months, gross unrealized losses	$ 8,382	$ 8,044
Available for sale securities, over twelve months, gross unrealized losses	1,358	2,255
Available for sale securities, continuous unrealized loss position, accumulated loss	9,740	10,299
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value [Abstract]
Available for sale securities, continuous unrealized loss position, less than twelve months, fair value	627,847	523,307
Available for sale securities, continuous unrealized loss position, over twelve months, fair value	24,190	28,874
Available for sale securities, continuous unrealized loss position, fair value	652,037	552,181
Held-to-maturity Securities, Continuous Unrealized Loss Position, Accumulated Loss [Abstract]
Held-to-maturity securities, continuous unrealized loss position, less than twelve months, accumulated loss	3,417	3,504
Held-to-maturity securities, continuous unrealized loss position, over twelve months, gross unrealized losses	0	0
Held to maturity securities, accumulated unrecognized holding loss	3,417	3,504
Held-to-maturity Securities, Continuous Unrealized Loss Position, Fair Value [Abstract]
Held to maturity securities, accumulated unrecognized holding loss, less than twelve months, fair value	102,495	103,002
Held to maturity securities, accumulated unrecognized holding loss, over twelve months, fair value	0	0
Held to maturity securities, accumulated unrecognized holding loss, fair value	102,495	103,002
Securities available for sale and held to maturity
Held to maturity and available for sale securities continuous unrealized loss position, less than twelve months, aggregate losses	11,799	11,548
Held to maturity and available for sale securities continuous unrealized loss position, less than twelve months, fair value	730,342	626,309
Held to maturity and available for sale securities continuous unrealized loss position, over twelve months, aggregate losses	1,358	2,255
Held to maturity and available for sale securities continuous unrealized loss position, over twelve months, fair value	24,190	28,874
Held to maturity and available for sale securities continuous unrealized loss position, aggregate losses	13,157	13,803
Held to maturity and available for sale securities continuous unrealized loss position, fair value	754,532	655,183
Debt securities
Available-for-sale Securities, Continuous Unrealized Loss Position, Accumulated Loss [Abstract]
Available for sale securities, less than twelve months, gross unrealized losses	8,334	7,887
Available for sale securities, over twelve months, gross unrealized losses	491	799
Available for sale securities, continuous unrealized loss position, accumulated loss	8,825	8,686
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value [Abstract]
Available for sale securities, continuous unrealized loss position, less than twelve months, fair value	626,517	516,707
Available for sale securities, continuous unrealized loss position, over twelve months, fair value	18,051	22,947
Available for sale securities, continuous unrealized loss position, fair value	644,568	539,654
Debt securities | Municipal bonds and obligations
Available-for-sale Securities, Continuous Unrealized Loss Position, Accumulated Loss [Abstract]
Available for sale securities, less than twelve months, gross unrealized losses	970	1,049
Available for sale securities, over twelve months, gross unrealized losses	0	0
Available for sale securities, continuous unrealized loss position, accumulated loss	970	1,049
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value [Abstract]
Available for sale securities, continuous unrealized loss position, less than twelve months, fair value	12,175	13,839
Available for sale securities, continuous unrealized loss position, over twelve months, fair value	0	0
Available for sale securities, continuous unrealized loss position, fair value	12,175	13,839
Held-to-maturity Securities, Continuous Unrealized Loss Position, Accumulated Loss [Abstract]
Held-to-maturity securities, continuous unrealized loss position, less than twelve months, accumulated loss	2,299	2,416
Held-to-maturity securities, continuous unrealized loss position, over twelve months, gross unrealized losses	0	0
Held to maturity securities, accumulated unrecognized holding loss	2,299	2,416
Held-to-maturity Securities, Continuous Unrealized Loss Position, Fair Value [Abstract]
Held to maturity securities, accumulated unrecognized holding loss, less than twelve months, fair value	69,480	69,308
Held to maturity securities, accumulated unrecognized holding loss, over twelve months, fair value	0	0
Held to maturity securities, accumulated unrecognized holding loss, fair value	69,480	69,308
Debt securities | Agency collateralized mortgage obligations
Available-for-sale Securities, Continuous Unrealized Loss Position, Accumulated Loss [Abstract]
Available for sale securities, less than twelve months, gross unrealized losses	3,424	3,291
Available for sale securities, over twelve months, gross unrealized losses	0	0
Available for sale securities, continuous unrealized loss position, accumulated loss	3,424	3,291
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value [Abstract]
Available for sale securities, continuous unrealized loss position, less than twelve months, fair value	420,178	319,448
Available for sale securities, continuous unrealized loss position, over twelve months, fair value	0	0
Available for sale securities, continuous unrealized loss position, fair value	420,178	319,448
Held-to-maturity Securities, Continuous Unrealized Loss Position, Accumulated Loss [Abstract]
Held-to-maturity securities, continuous unrealized loss position, less than twelve months, accumulated loss	420	411
Held-to-maturity securities, continuous unrealized loss position, over twelve months, gross unrealized losses	0	0
Held to maturity securities, accumulated unrecognized holding loss	420	411
Held-to-maturity Securities, Continuous Unrealized Loss Position, Fair Value [Abstract]
Held to maturity securities, accumulated unrecognized holding loss, less than twelve months, fair value	14,422	14,724
Held to maturity securities, accumulated unrecognized holding loss, over twelve months, fair value	0	0
Held to maturity securities, accumulated unrecognized holding loss, fair value	14,422	14,724
Debt securities | Agency mortgage-backed securities
Available-for-sale Securities, Continuous Unrealized Loss Position, Accumulated Loss [Abstract]
Available for sale securities, less than twelve months, gross unrealized losses	2,216	2,153
Available for sale securities, over twelve months, gross unrealized losses	28	28
Available for sale securities, continuous unrealized loss position, accumulated loss	2,244	2,181
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value [Abstract]
Available for sale securities, continuous unrealized loss position, less than twelve months, fair value	133,529	130,766
Available for sale securities, continuous unrealized loss position, over twelve months, fair value	1,480	2,061
Available for sale securities, continuous unrealized loss position, fair value	135,009	132,827
Held-to-maturity Securities, Continuous Unrealized Loss Position, Accumulated Loss [Abstract]
Held-to-maturity securities, continuous unrealized loss position, less than twelve months, accumulated loss	257	243
Held-to-maturity securities, continuous unrealized loss position, over twelve months, gross unrealized losses	0	0
Held to maturity securities, accumulated unrecognized holding loss	257	243
Held-to-maturity Securities, Continuous Unrealized Loss Position, Fair Value [Abstract]
Held to maturity securities, accumulated unrecognized holding loss, less than twelve months, fair value	8,505	8,859
Held to maturity securities, accumulated unrecognized holding loss, over twelve months, fair value	0	0
Held to maturity securities, accumulated unrecognized holding loss, fair value	8,505	8,859
Debt securities | Agency commercial mortgage-backed securities
Available-for-sale Securities, Continuous Unrealized Loss Position, Accumulated Loss [Abstract]
Available for sale securities, less than twelve months, gross unrealized losses	1,709	1,368
Available for sale securities, over twelve months, gross unrealized losses	0	0
Available for sale securities, continuous unrealized loss position, accumulated loss	1,709	1,368
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value [Abstract]
Available for sale securities, continuous unrealized loss position, less than twelve months, fair value	53,156	44,860
Available for sale securities, continuous unrealized loss position, over twelve months, fair value	0	0
Available for sale securities, continuous unrealized loss position, fair value	53,156	44,860
Held-to-maturity Securities, Continuous Unrealized Loss Position, Accumulated Loss [Abstract]
Held-to-maturity securities, continuous unrealized loss position, less than twelve months, accumulated loss	441	434
Held-to-maturity securities, continuous unrealized loss position, over twelve months, gross unrealized losses	0	0
Held to maturity securities, accumulated unrecognized holding loss	441	434
Held-to-maturity Securities, Continuous Unrealized Loss Position, Fair Value [Abstract]
Held to maturity securities, accumulated unrecognized holding loss, less than twelve months, fair value	10,088	10,111
Held to maturity securities, accumulated unrecognized holding loss, over twelve months, fair value	0	0
Held to maturity securities, accumulated unrecognized holding loss, fair value	10,088	10,111
Debt securities | Corporate bonds
Available-for-sale Securities, Continuous Unrealized Loss Position, Accumulated Loss [Abstract]
Available for sale securities, less than twelve months, gross unrealized losses	4	11
Available for sale securities, over twelve months, gross unrealized losses	463	711
Available for sale securities, continuous unrealized loss position, accumulated loss	467	722
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value [Abstract]
Available for sale securities, continuous unrealized loss position, less than twelve months, fair value	4,461	4,780
Available for sale securities, continuous unrealized loss position, over twelve months, fair value	16,571	19,655
Available for sale securities, continuous unrealized loss position, fair value	21,032	24,435
Debt securities | Trust preferred securities
Available-for-sale Securities, Continuous Unrealized Loss Position, Accumulated Loss [Abstract]
Available for sale securities, less than twelve months, gross unrealized losses		0
Available for sale securities, over twelve months, gross unrealized losses		59
Available for sale securities, continuous unrealized loss position, accumulated loss		59
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value [Abstract]
Available for sale securities, continuous unrealized loss position, less than twelve months, fair value		0
Available for sale securities, continuous unrealized loss position, over twelve months, fair value		1,204
Available for sale securities, continuous unrealized loss position, fair value		1,204
Debt securities | Other bonds and obligations
Available-for-sale Securities, Continuous Unrealized Loss Position, Accumulated Loss [Abstract]
Available for sale securities, less than twelve months, gross unrealized losses	11	15
Available for sale securities, over twelve months, gross unrealized losses	0	1
Available for sale securities, continuous unrealized loss position, accumulated loss	11	16
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value [Abstract]
Available for sale securities, continuous unrealized loss position, less than twelve months, fair value	3,018	3,014
Available for sale securities, continuous unrealized loss position, over twelve months, fair value	0	27
Available for sale securities, continuous unrealized loss position, fair value	3,018	3,041
Marketable equity securities
Available-for-sale Securities, Continuous Unrealized Loss Position, Accumulated Loss [Abstract]
Available for sale securities, less than twelve months, gross unrealized losses	48	157
Available for sale securities, over twelve months, gross unrealized losses	867	1,456
Available for sale securities, continuous unrealized loss position, accumulated loss	915	1,613
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value [Abstract]
Available for sale securities, continuous unrealized loss position, less than twelve months, fair value	1,330	6,600
Available for sale securities, continuous unrealized loss position, over twelve months, fair value	6,139	5,927
Available for sale securities, continuous unrealized loss position, fair value	$ 7,469	$ 12,527

SECURITIES AVAILABLE FOR SALE38

SECURITIES AVAILABLE FOR SALE AND HELD TO MATURITY - Narrative (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2017USD ($)security	Dec. 31, 2016USD ($)
Investment Holdings [Line Items]
Securities available for sale, at fair value | $	$ 1,293,683	$ 1,209,537
Level 2
Investment Holdings [Line Items]
Securities available for sale, at fair value | $	$ 1,250,675	$ 1,147,253
Marketable equity securities
Investment Holdings [Line Items]
Available-for-sale, securities in unrealized loss positions (security)	5
Available for sale securities portfolio, number of securities (security)	19
Available for sale and held to maturity securities, continuous unrealized loss position, aggregate losses (as percent)	10.90%
Municipal bonds and obligations
Investment Holdings [Line Items]
Available for sale and held to maturity securities, continuous unrealized loss position, aggregate losses (as percent)	3.20%
Held-to-maturity, securities in unrealized loss positions (security)	53
Held-to-maturity securities portfolio, number of securities (security)	195
Municipal bonds and obligations | Debt securities
Investment Holdings [Line Items]
Available-for-sale, securities in unrealized loss positions (security)	9
Available for sale securities portfolio, number of securities (security)	271
Available for sale and held to maturity securities, continuous unrealized loss position, aggregate losses (as percent)	7.40%
Agency collateralized mortgage obligations
Investment Holdings [Line Items]
Available for sale and held to maturity securities, continuous unrealized loss position, aggregate losses (as percent)	2.90%
Held-to-maturity, securities in unrealized loss positions (security)	1
Held-to-maturity securities portfolio, number of securities (security)	9
Agency collateralized mortgage obligations | Debt securities
Investment Holdings [Line Items]
Available-for-sale, securities in unrealized loss positions (security)	77
Available for sale securities portfolio, number of securities (security)	225
Available for sale and held to maturity securities, continuous unrealized loss position, aggregate losses (as percent)	0.80%
Mortgage-backed securities
Investment Holdings [Line Items]
Available for sale and held to maturity securities, continuous unrealized loss position, aggregate losses (as percent)	3.60%
Held-to-maturity, securities in unrealized loss positions (security)	2
Held-to-maturity securities portfolio, number of securities (security)	2
Mortgage-backed securities | Debt securities
Investment Holdings [Line Items]
Available-for-sale, securities in unrealized loss positions (security)	42
Available for sale securities portfolio, number of securities (security)	102
Available for sale and held to maturity securities, continuous unrealized loss position, aggregate losses (as percent)	2.10%
Corporate bonds | One Investment | Level 2
Investment Holdings [Line Items]
Securities available for sale, at fair value | $	$ 16,600
Corporate bonds | Debt securities
Investment Holdings [Line Items]
Available-for-sale, securities in unrealized loss positions (security)	2
Available for sale securities portfolio, number of securities (security)	12
Available for sale and held to maturity securities, continuous unrealized loss position, aggregate losses (as percent)	2.20%
Corporate bonds | Debt securities | One Investment
Investment Holdings [Line Items]
Available for sale securities gross unrealized loss accumulated in investments | $	$ 463
Securities available for sale, at fair value | $	$ 17,000
Other bonds and obligations | Debt securities
Investment Holdings [Line Items]
Available-for-sale, securities in unrealized loss positions (security)	5
Available for sale securities portfolio, number of securities (security)	9
Available for sale and held to maturity securities, continuous unrealized loss position, aggregate losses (as percent)	0.40%

LOANS - Summary of Total Loans

LOANS - Summary of Total Loans (Details) - USD ($) $ in Thousands	Mar. 31, 2017	Dec. 31, 2016
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans	$ 6,655,933	$ 6,549,787
Business Activities Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans	5,413,218	5,221,307
Acquired Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans	1,242,715	1,328,480
Total commercial loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans	3,819,488	3,678,476
Total commercial loans | Business Activities Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans	3,043,116	2,834,446
Total commercial loans | Acquired Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans	776,372	844,030
Commercial Real Estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans	2,673,363	2,616,438
Commercial Real Estate | Business Activities Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans	2,026,341	1,926,344
Commercial Real Estate | Acquired Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans	647,022	690,094
Commercial Real Estate | Construction
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans	306,110	287,509
Commercial Real Estate | Construction | Business Activities Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans	281,134	253,302
Commercial Real Estate | Construction | Acquired Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans	24,976	34,207
Commercial Real Estate | Single and multi-family
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans	444,932	317,491
Commercial Real Estate | Single and multi-family | Business Activities Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans	339,259	191,819
Commercial Real Estate | Single and multi-family | Acquired Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans	105,673	125,672
Commercial Real Estate | Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans	1,922,321	2,011,438
Commercial Real Estate | Other | Business Activities Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans	1,405,948	1,481,223
Commercial Real Estate | Other | Acquired Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans	516,373	530,215
Commercial and industrial loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans	1,146,125	1,062,038
Commercial and industrial loans | Business Activities Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans	1,016,775	908,102
Commercial and industrial loans | Acquired Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans	129,350	153,936
Commercial and industrial loans | Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans	794,133	740,768
Commercial and industrial loans | Other | Business Activities Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans	664,783	586,832
Commercial and industrial loans | Other | Acquired Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans	129,350	153,936
Commercial and industrial loans | Asset based lending
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans	351,992	321,270
Commercial and industrial loans | Asset based lending | Business Activities Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans	351,992	321,270
Commercial and industrial loans | Asset based lending | Acquired Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans	0	0
Residential Mortgages
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans	1,850,684	1,893,131
Residential Mortgages | Business Activities Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans	1,560,307	1,594,972
Residential Mortgages | Acquired Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans	290,377	298,159
Residential Mortgages | Construction
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans	12,257	11,982
Residential Mortgages | Construction | Business Activities Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans	11,545	11,178
Residential Mortgages | Construction | Acquired Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans	712	804
Residential Mortgages | 1-4 family
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans	1,838,427	1,881,149
Residential Mortgages | 1-4 family | Business Activities Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans	1,548,762	1,583,794
Residential Mortgages | 1-4 family | Acquired Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans	289,665	297,355
Consumer Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans	985,761	978,180
Consumer Loans | Business Activities Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans	809,795	791,889
Consumer Loans | Acquired Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans	175,966	186,291
Consumer Loans | Home equity
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans	389,947	393,800
Consumer Loans | Home equity | Business Activities Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans	312,639	313,521
Consumer Loans | Home equity | Acquired Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans	77,308	80,279
Consumer Loans | Auto and other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans	595,814	584,380
Consumer Loans | Auto and other | Business Activities Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans	497,156	478,368
Consumer Loans | Auto and other | Acquired Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans	$ 98,658	$ 106,012

LOANS - Narrative (Details)

LOANS - Narrative (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2017	Dec. 31, 2016
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans	$ 6,655,933	$ 6,549,787
Borrower's sustained repayment performance period	6 months
Residential Mortgages
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans	$ 1,850,684	1,893,131
Foreclosed property	71	151
Residential Mortgages | Mortgages
Accounts, Notes, Loans and Financing Receivable [Line Items]
Process of foreclosure	5,600	4,800
Acquired Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans	1,242,715	1,328,480
Acquired Credit Impaired	44,331	46,816
Certain loans acquired in transfer not accounted for as debt securities, note balance, net	79,300	86,600
Financing receivable not considered impaired at time of acquisition	1,200,000	1,300,000
Acquired Loans | Residential Mortgages
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans	290,377	298,159
Acquired Credit Impaired	7,269	7,283
Acquired Loans | Residential Mortgages | Mortgages
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans	$ 290,377	$ 298,159

LOANS - Accretable Yield Activi

LOANS - Accretable Yield Activity (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Accretable Yield Movement Schedule [Roll Forward]
Balance at beginning of period	$ 8,738	$ 6,925
Reclassification from nonaccretable difference for loans with improved cash flows	418	896
Change in cash flows that do not affect nonaccretable difference	(747)	0
Reclassification to TDR	0	(185)
Accretion	(1,046)	(1,172)
Balance at end of period	$ 7,363	$ 6,464

LOANS - Summary of Past Due Loa

LOANS - Summary of Past Due Loans (Details) - USD ($) $ in Thousands	Mar. 31, 2017	Dec. 31, 2016
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	$ 6,655,933	$ 6,549,787
Commercial Real Estate
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	2,673,363	2,616,438
Commercial Real Estate | Construction
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	306,110	287,509
Commercial Real Estate | Single and multi-family
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	444,932	317,491
Commercial Real Estate | Other
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	1,922,321	2,011,438
Commercial and industrial loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	1,146,125	1,062,038
Commercial and industrial loans | Other
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	794,133	740,768
Commercial and industrial loans | Asset based lending
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	351,992	321,270
Residential Mortgages
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	1,850,684	1,893,131
Residential Mortgages | Construction
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	12,257	11,982
Residential Mortgages | 1-4 family
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	1,838,427	1,881,149
Consumer Loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	985,761	978,180
Consumer Loans | Home equity
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	389,947	393,800
Consumer Loans | Auto and other
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	595,814	584,380
Business Activities Loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	32,951	32,277
Current	5,380,267	5,189,030
Total loans	5,413,218	5,221,307
Past Due 90 days and Accruing	2,028	2,438
Business Activities Loans | 30-59 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	8,111	8,174
Business Activities Loans | 60-89 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	3,085	4,849
Business Activities Loans | 90 Days or Greater Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	21,755	19,254
Business Activities Loans | Commercial Real Estate
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	10,455	8,288
Current	2,015,886	1,918,056
Total loans	2,026,341	1,926,344
Past Due 90 days and Accruing	641	155
Business Activities Loans | Commercial Real Estate | Construction
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	0	0
Current	281,134	253,302
Total loans	281,134	253,302
Past Due 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	631	1,352
Current	338,628	190,467
Total loans	339,259	191,819
Past Due 90 days and Accruing	0	155
Business Activities Loans | Commercial Real Estate | Other
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	9,824	6,936
Current	1,396,124	1,474,287
Total loans	1,405,948	1,481,223
Past Due 90 days and Accruing	641	0
Business Activities Loans | Commercial Real Estate | 30-59 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	2,198	1,099
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	118	618
Business Activities Loans | Commercial Real Estate | 30-59 Days Past Due | Other
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	2,080	481
Business Activities Loans | Commercial Real Estate | 60-89 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	1,136	2,353
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	0	110
Business Activities Loans | Commercial Real Estate | 60-89 Days Past Due | Other
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	1,136	2,243
Business Activities Loans | Commercial Real Estate | 90 Days or Greater Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	7,121	4,836
Business Activities Loans | Commercial Real Estate | 90 Days or Greater Past Due | Construction
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	0	0
Business Activities Loans | Commercial Real Estate | 90 Days or Greater Past Due | Single and multi-family
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	513	624
Business Activities Loans | Commercial Real Estate | 90 Days or Greater Past Due | Other
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	6,608	4,212
Business Activities Loans | Commercial and industrial loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	10,112	10,681
Current	1,006,663	897,421
Total loans	1,016,775	908,102
Past Due 90 days and Accruing	6	5
Business Activities Loans | Commercial and industrial loans | Other
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	10,112	10,681
Current	654,671	576,151
Total loans	664,783	586,832
Past Due 90 days and Accruing	6	5
Business Activities Loans | Commercial and industrial loans | Asset based lending
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	0	0
Current	351,992	321,270
Total loans	351,992	321,270
Past Due 90 days and Accruing	0	0
Business Activities Loans | Commercial and industrial loans | 30-59 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	1,583	3,090
Business Activities Loans | Commercial and industrial loans | 30-59 Days Past Due | Other
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	1,583	3,090
Business Activities Loans | Commercial and industrial loans | 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 loans | 60-89 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	1,405	1,301
Business Activities Loans | Commercial and industrial loans | 60-89 Days Past Due | Other
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	1,405	1,301
Business Activities Loans | Commercial and industrial loans | 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 loans | 90 Days or Greater Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	7,124	6,290
Business Activities Loans | Commercial and industrial loans | 90 Days or Greater Past Due | Other
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	7,124	6,290
Business Activities Loans | Commercial and industrial loans | 90 Days or Greater Past Due | Asset based lending
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	0	0
Business Activities Loans | Residential Mortgages
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	6,021	6,283
Current	1,554,286	1,588,689
Total loans	1,560,307	1,594,972
Past Due 90 days and Accruing	1,274	1,956
Business Activities Loans | Residential Mortgages | Construction
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	0	10
Current	11,545	11,168
Total loans	11,545	11,178
Past Due 90 days and Accruing	0	0
Business Activities Loans | Residential Mortgages | 1-4 family
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	6,021	6,273
Current	1,542,741	1,577,521
Total loans	1,548,762	1,583,794
Past Due 90 days and Accruing	1,274	1,956
Business Activities Loans | Residential Mortgages | 30-59 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	2,125	1,403
Business Activities Loans | Residential Mortgages | 30-59 Days Past Due | Construction
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	0	10
Business Activities Loans | Residential Mortgages | 30-59 Days Past Due | 1-4 family
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	2,125	1,393
Business Activities Loans | Residential Mortgages | 60-89 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	66	701
Business Activities Loans | Residential Mortgages | 60-89 Days Past Due | Construction
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	0	0
Business Activities Loans | Residential Mortgages | 60-89 Days Past Due | 1-4 family
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	66	701
Business Activities Loans | Residential Mortgages | 90 Days or Greater Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	3,830	4,179
Business Activities Loans | Residential Mortgages | 90 Days or Greater Past Due | Construction
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	0	0
Business Activities Loans | Residential Mortgages | 90 Days or Greater Past Due | 1-4 family
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	3,830	4,179
Business Activities Loans | Consumer Loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	6,363	7,025
Current	803,432	784,864
Total loans	809,795	791,889
Past Due 90 days and Accruing	107	322
Business Activities Loans | Consumer Loans | Home equity
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	3,116	3,080
Current	309,523	310,441
Total loans	312,639	313,521
Past Due 90 days and Accruing	85	306
Business Activities Loans | Consumer Loans | Auto and other
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	3,247	3,945
Current	493,909	474,423
Total loans	497,156	478,368
Past Due 90 days and Accruing	22	16
Business Activities Loans | Consumer Loans | 30-59 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	2,205	2,582
Business Activities Loans | Consumer Loans | 30-59 Days Past Due | Home equity
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	581	99
Business Activities Loans | Consumer Loans | 30-59 Days Past Due | Auto and other
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	1,624	2,483
Business Activities Loans | Consumer Loans | 60-89 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	478	494
Business Activities Loans | Consumer Loans | 60-89 Days Past Due | Home equity
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	50	0
Business Activities Loans | Consumer Loans | 60-89 Days Past Due | Auto and other
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	428	494
Business Activities Loans | Consumer Loans | 90 Days or Greater Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	3,680	3,949
Business Activities Loans | Consumer Loans | 90 Days or Greater Past Due | Home equity
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	2,485	2,981
Business Activities Loans | Consumer Loans | 90 Days or Greater Past Due | Auto and other
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	1,195	968
Acquired Loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	9,702	12,730
Acquired Credit Impaired	44,331	46,816
Total loans	1,242,715	1,328,480
Past Due 90 days and Accruing	1,401	1,611
Acquired Loans | 30-59 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	2,054	5,023
Acquired Loans | 60-89 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	847	672
Acquired Loans | 90 Days or Greater Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	6,801	7,035
Acquired Loans | Commercial Real Estate
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	1,884	2,759
Acquired Credit Impaired	30,504	34,820
Total loans	647,022	690,094
Past Due 90 days and Accruing	102	0
Acquired Loans | Commercial Real Estate | Construction
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	0	0
Acquired Credit Impaired	0	47
Total loans	24,976	34,207
Past Due 90 days and Accruing	0	0
Acquired Loans | Commercial Real Estate | Single and multi-family
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	639	439
Acquired Credit Impaired	3,381	4,726
Total loans	105,673	125,672
Past Due 90 days and Accruing	0	0
Acquired Loans | Commercial Real Estate | Other
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	1,245	2,320
Acquired Credit Impaired	27,123	30,047
Total loans	516,373	530,215
Past Due 90 days and Accruing	102	0
Acquired Loans | Commercial Real Estate | 30-59 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	544	1,557
Acquired Loans | Commercial Real Estate | 30-59 Days Past Due | Construction
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	0	0
Acquired Loans | Commercial Real Estate | 30-59 Days Past Due | Single and multi-family
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	81	2
Acquired Loans | Commercial Real Estate | 30-59 Days Past Due | Other
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	463	1,555
Acquired Loans | Commercial Real Estate | 60-89 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	0	0
Acquired Loans | Commercial Real Estate | 60-89 Days Past Due | Construction
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	0	0
Acquired Loans | Commercial Real Estate | 60-89 Days Past Due | Single and multi-family
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	0	0
Acquired Loans | Commercial Real Estate | 60-89 Days Past Due | Other
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	0	0
Acquired Loans | Commercial Real Estate | 90 Days or Greater Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	1,340	1,202
Acquired Loans | Commercial Real Estate | 90 Days or Greater Past Due | Construction
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	0	0
Acquired Loans | Commercial Real Estate | 90 Days or Greater Past Due | Single and multi-family
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	558	437
Acquired Loans | Commercial Real Estate | 90 Days or Greater Past Due | Other
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	782	765
Acquired Loans | Commercial and industrial loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	1,681	3,127
Acquired Credit Impaired	5,282	3,369
Total loans	129,350	153,936
Past Due 90 days and Accruing	18	24
Acquired Loans | Commercial and industrial loans | Other
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	1,681	3,127
Acquired Credit Impaired	5,282	3,369
Total loans	129,350	153,936
Past Due 90 days and Accruing	18	24
Acquired Loans | Commercial and industrial loans | Asset based lending
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	0	0
Acquired Credit Impaired	0	0
Total loans	0	0
Past Due 90 days and Accruing	0	0
Acquired Loans | Commercial and industrial loans | 30-59 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	325	1,850
Acquired Loans | Commercial and industrial loans | 30-59 Days Past Due | Other
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	325	1,850
Acquired Loans | Commercial and industrial loans | 30-59 Days Past Due | Asset based lending
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	0	0
Acquired Loans | Commercial and industrial loans | 60-89 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	128	15
Acquired Loans | Commercial and industrial loans | 60-89 Days Past Due | Other
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	128	15
Acquired Loans | Commercial and industrial loans | 60-89 Days Past Due | Asset based lending
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	0	0
Acquired Loans | Commercial and industrial loans | 90 Days or Greater Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	1,228	1,262
Acquired Loans | Commercial and industrial loans | 90 Days or Greater Past Due | Other
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	1,228	1,262
Acquired Loans | Commercial and industrial loans | 90 Days or Greater Past Due | Asset based lending
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	0	0
Acquired Loans | Residential Mortgages
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	2,174	2,679
Acquired Credit Impaired	7,269	7,283
Total loans	290,377	298,159
Past Due 90 days and Accruing	0	443
Acquired Loans | Residential Mortgages | Construction
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	0	0
Acquired Credit Impaired	0	0
Total loans	712	804
Past Due 90 days and Accruing	0	0
Acquired Loans | Residential Mortgages | 1-4 family
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	2,174	2,679
Acquired Credit Impaired	7,269	7,283
Total loans	289,665	297,355
Past Due 90 days and Accruing	0	443
Acquired Loans | Residential Mortgages | 30-59 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	674	321
Acquired Loans | Residential Mortgages | 30-59 Days Past Due | Construction
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	0	0
Acquired Loans | Residential Mortgages | 30-59 Days Past Due | 1-4 family
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	674	321
Acquired Loans | Residential Mortgages | 60-89 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	84	343
Acquired Loans | Residential Mortgages | 60-89 Days Past Due | Construction
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	0	0
Acquired Loans | Residential Mortgages | 60-89 Days Past Due | 1-4 family
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	84	343
Acquired Loans | Residential Mortgages | 90 Days or Greater Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	1,416	2,015
Acquired Loans | Residential Mortgages | 90 Days or Greater Past Due | Construction
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	0	0
Acquired Loans | Residential Mortgages | 90 Days or Greater Past Due | 1-4 family
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	1,416	2,015
Acquired Loans | Consumer Loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	3,963	4,165
Acquired Credit Impaired	1,276	1,344
Total loans	175,966	186,291
Past Due 90 days and Accruing	1,281	1,144
Acquired Loans | Consumer Loans | Home equity
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	1,829	1,623
Acquired Credit Impaired	893	957
Total loans	77,308	80,279
Past Due 90 days and Accruing	514	353
Acquired Loans | Consumer Loans | Auto and other
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	2,134	2,542
Acquired Credit Impaired	383	387
Total loans	98,658	106,012
Past Due 90 days and Accruing	767	791
Acquired Loans | Consumer Loans | 30-59 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	511	1,295
Acquired Loans | Consumer Loans | 30-59 Days Past Due | Home equity
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	80	753
Acquired Loans | Consumer Loans | 30-59 Days Past Due | Auto and other
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	431	542
Acquired Loans | Consumer Loans | 60-89 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	635	314
Acquired Loans | Consumer Loans | 60-89 Days Past Due | Home equity
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	396	0
Acquired Loans | Consumer Loans | 60-89 Days Past Due | Auto and other
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	239	314
Acquired Loans | Consumer Loans | 90 Days or Greater Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	2,817	2,556
Acquired Loans | Consumer Loans | 90 Days or Greater Past Due | Home equity
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	1,353	870
Acquired Loans | Consumer Loans | 90 Days or Greater Past Due | Auto and other
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	$ 1,464	$ 1,686

LOANS - Summary Information Per

LOANS - Summary Information Pertaining to Non-accrual Loans (Details) - USD ($) $ in Thousands	Mar. 31, 2017	Dec. 31, 2016
Non-accrual loans
Non-accrual loans	$ 25,029	$ 22,157
Business Activities Loans
Non-accrual loans
Non-accrual loans	19,727	16,816
Acquired Loans
Non-accrual loans
Non-accrual loans	5,302	5,341
Acquired Credit Impaired Loans
Non-accrual loans
Non-accrual loans	98	83
Commercial Real Estate
Non-accrual loans
Non-accrual loans	7,718	5,883
Commercial Real Estate | Business Activities Loans
Non-accrual loans
Non-accrual loans	6,480	4,681
Commercial Real Estate | Acquired Loans
Non-accrual loans
Non-accrual loans	1,238	1,202
Commercial Real Estate | Construction
Non-accrual loans
Non-accrual loans	0	0
Commercial Real Estate | Construction | Business Activities Loans
Non-accrual loans
Non-accrual loans	0	0
Commercial Real Estate | Construction | Acquired Loans
Non-accrual loans
Non-accrual loans	0	0
Commercial Real Estate | Single and multi-family
Non-accrual loans
Non-accrual loans	1,034	906
Commercial Real Estate | Single and multi-family | Business Activities Loans
Non-accrual loans
Non-accrual loans	513	469
Commercial Real Estate | Single and multi-family | Acquired Loans
Non-accrual loans
Non-accrual loans	521	437
Commercial Real Estate | Other
Non-accrual loans
Non-accrual loans	6,684	4,977
Commercial Real Estate | Other | Business Activities Loans
Non-accrual loans
Non-accrual loans	5,967	4,212
Commercial Real Estate | Other | Acquired Loans
Non-accrual loans
Non-accrual loans	717	765
Commercial and industrial loans
Non-accrual loans
Non-accrual loans	8,245	7,440
Commercial and industrial loans | Business Activities Loans
Non-accrual loans
Non-accrual loans	7,118	6,285
Commercial and industrial loans | Acquired Loans
Non-accrual loans
Non-accrual loans	1,127	1,155
Commercial and industrial loans | Other
Non-accrual loans
Non-accrual loans	8,245	7,440
Commercial and industrial loans | Other | Business Activities Loans
Non-accrual loans
Non-accrual loans	7,118	6,285
Commercial and industrial loans | Other | Acquired Loans
Non-accrual loans
Non-accrual loans	1,127	1,155
Residential Mortgages
Non-accrual loans
Non-accrual loans	3,958	3,795
Residential Mortgages | Business Activities Loans
Non-accrual loans
Non-accrual loans	2,556	2,223
Residential Mortgages | Acquired Loans
Non-accrual loans
Non-accrual loans	1,402	1,572
Residential Mortgages | Construction
Non-accrual loans
Non-accrual loans	0	0
Residential Mortgages | Construction | Business Activities Loans
Non-accrual loans
Non-accrual loans	0	0
Residential Mortgages | Construction | Acquired Loans
Non-accrual loans
Non-accrual loans	0	0
Residential Mortgages | 1-4 family
Non-accrual loans
Non-accrual loans	3,958	3,795
Residential Mortgages | 1-4 family | Business Activities Loans
Non-accrual loans
Non-accrual loans	2,556	2,223
Residential Mortgages | 1-4 family | Acquired Loans
Non-accrual loans
Non-accrual loans	1,402	1,572
Consumer Loans
Non-accrual loans
Non-accrual loans	5,108	5,039
Consumer Loans | Business Activities Loans
Non-accrual loans
Non-accrual loans	3,573	3,627
Consumer Loans | Acquired Loans
Non-accrual loans
Non-accrual loans	1,535	1,412
Consumer Loans | Home equity
Non-accrual loans
Non-accrual loans	3,238	3,192
Consumer Loans | Home equity | Business Activities Loans
Non-accrual loans
Non-accrual loans	2,400	2,675
Consumer Loans | Home equity | Acquired Loans
Non-accrual loans
Non-accrual loans	838	517
Consumer Loans | Auto and other
Non-accrual loans
Non-accrual loans	1,870	1,847
Consumer Loans | Auto and other | Business Activities Loans
Non-accrual loans
Non-accrual loans	1,173	952
Consumer Loans | Auto and other | Acquired Loans
Non-accrual loans
Non-accrual loans	$ 697	$ 895

LOANS - Loans Evaluated for Imp

LOANS - Loans Evaluated for Impairment (Details) - USD ($) $ in Thousands	Mar. 31, 2017	Dec. 31, 2016
Loans receivable: balance at end of period
Total loans	$ 6,655,933	$ 6,549,787
Commercial Real Estate
Loans receivable: balance at end of period
Total loans	2,673,363	2,616,438
Commercial and industrial loans
Loans receivable: balance at end of period
Total loans	1,146,125	1,062,038
Residential Mortgages
Loans receivable: balance at end of period
Total loans	1,850,684	1,893,131
Consumer Loans
Loans receivable: balance at end of period
Total loans	985,761	978,180
Business Activities Loans
Loans receivable: balance at end of period
Individually evaluated for impairment	40,846	36,732
Collectively evaluated for impairment	5,372,372	5,184,575
Total loans	5,413,218	5,221,307
Business Activities Loans | Commercial Real Estate
Loans receivable: balance at end of period
Individually evaluated for impairment	29,208	25,549
Collectively evaluated for impairment	1,997,133	1,900,795
Total loans	2,026,341	1,926,344
Business Activities Loans | Commercial and industrial loans
Loans receivable: balance at end of period
Individually evaluated for impairment	6,460	5,705
Collectively evaluated for impairment	1,010,315	902,397
Total loans	1,016,775	908,102
Business Activities Loans | Residential Mortgages
Loans receivable: balance at end of period
Individually evaluated for impairment	2,798	2,775
Collectively evaluated for impairment	1,557,509	1,592,197
Total loans	1,560,307	1,594,972
Business Activities Loans | Consumer Loans
Loans receivable: balance at end of period
Individually evaluated for impairment	2,380	2,703
Collectively evaluated for impairment	807,415	789,186
Total loans	809,795	791,889
Acquired Loans
Loans receivable: balance at end of period
Individually evaluated for impairment	5,214	5,605
Purchased credit-impaired loans	44,331	46,816
Collectively evaluated for impairment	1,193,170	1,276,059
Total loans	1,242,715	1,328,480
Acquired Loans | Commercial Real Estate
Loans receivable: balance at end of period
Individually evaluated for impairment	3,325	4,256
Purchased credit-impaired loans	30,504	34,820
Collectively evaluated for impairment	613,193	651,018
Total loans	647,022	690,094
Acquired Loans | Commercial and industrial loans
Loans receivable: balance at end of period
Individually evaluated for impairment	654	635
Purchased credit-impaired loans	5,282	3,369
Collectively evaluated for impairment	123,414	149,932
Total loans	129,350	153,936
Acquired Loans | Residential Mortgages
Loans receivable: balance at end of period
Individually evaluated for impairment	494	308
Purchased credit-impaired loans	7,269	7,283
Collectively evaluated for impairment	282,614	290,568
Total loans	290,377	298,159
Acquired Loans | Consumer Loans
Loans receivable: balance at end of period
Individually evaluated for impairment	741	406
Purchased credit-impaired loans	1,276	1,344
Collectively evaluated for impairment	173,949	184,541
Total loans	$ 175,966	$ 186,291

LOANS - Summary of Impaired Loa

LOANS - Summary of Impaired Loans (Details) - USD ($) $ in Thousands	Mar. 31, 2017	Dec. 31, 2016
Business Activities Loans
Recorded Investment
Total	$ 40,456	$ 36,018
Unpaid Principal Balance
Total	40,846	36,732
Related Allowance
With an allowance recorded	390	714
Business Activities Loans | Commercial Real Estate
Recorded Investment
Total	29,127	25,390
Unpaid Principal Balance
Total	29,208	25,548
Related Allowance
With an allowance recorded	81	158
Business Activities Loans | Commercial Real Estate | Construction
Recorded Investment
With no related allowance	0	0
With an allowance recorded	0	0
Unpaid Principal Balance
With no related allowance	0	0
With an allowance recorded	0	0
Related Allowance
With an allowance recorded	0	0
Business Activities Loans | Commercial Real Estate | Single and multi-family
Recorded Investment
With no related allowance	151	0
With an allowance recorded	181	179
Unpaid Principal Balance
With no related allowance	151	0
With an allowance recorded	182	181
Related Allowance
With an allowance recorded	1	2
Business Activities Loans | Commercial Real Estate | Other
Recorded Investment
With no related allowance	20,710	18,905
With an allowance recorded	8,085	6,306
Unpaid Principal Balance
With no related allowance	20,710	18,905
With an allowance recorded	8,165	6,462
Related Allowance
With an allowance recorded	80	156
Business Activities Loans | Commercial and industrial loans
Recorded Investment
Total	6,337	5,442
Unpaid Principal Balance
Total	6,460	5,706
Related Allowance
With an allowance recorded	123	264
Business Activities Loans | Commercial and industrial loans | Other
Recorded Investment
With no related allowance	1,051	382
With an allowance recorded	5,286	5,060
Unpaid Principal Balance
With no related allowance	1,051	382
With an allowance recorded	5,409	5,324
Related Allowance
With an allowance recorded	123	264
Business Activities Loans | Residential Mortgages
Recorded Investment
Total	2,662	2,639
Unpaid Principal Balance
Total	2,798	2,775
Related Allowance
With an allowance recorded	136	136
Business Activities Loans | Residential Mortgages | 1-4 Family
Recorded Investment
With no related allowance	1,797	2,101
With an allowance recorded	865	538
Unpaid Principal Balance
With no related allowance	1,797	2,101
With an allowance recorded	1,001	674
Related Allowance
With an allowance recorded	136	136
Business Activities Loans | Consumer Loans
Recorded Investment
Total	2,330	2,547
Unpaid Principal Balance
Total	2,380	2,703
Related Allowance
With an allowance recorded	50	156
Business Activities Loans | Consumer Loans | Other
Recorded Investment
With no related allowance	0	0
With an allowance recorded	0	0
Unpaid Principal Balance
With no related allowance	0	0
With an allowance recorded	0	0
Related Allowance
With an allowance recorded	0	0
Business Activities Loans | Consumer Loans | Home equity
Recorded Investment
With no related allowance	1,232	1,605
With an allowance recorded	1,098	942
Unpaid Principal Balance
With no related allowance	1,232	1,605
With an allowance recorded	1,148	1,098
Related Allowance
With an allowance recorded	50	156
Acquired Loans
Recorded Investment
Total	5,072	5,171
Unpaid Principal Balance
Total	5,214	5,605
Related Allowance
With an allowance recorded	142	434
Acquired Loans | Commercial Real Estate
Recorded Investment
Total	3,262	4,006
Unpaid Principal Balance
Total	3,325	4,256
Related Allowance
With an allowance recorded	63	250
Acquired Loans | Commercial Real Estate | Single and multi-family
Recorded Investment
With no related allowance	521	0
With an allowance recorded	883	1,250
Unpaid Principal Balance
With no related allowance	521	0
With an allowance recorded	911	1,358
Related Allowance
With an allowance recorded	28	108
Acquired Loans | Commercial Real Estate | Other
Recorded Investment
With no related allowance	403	547
With an allowance recorded	1,455	2,209
Unpaid Principal Balance
With no related allowance	403	547
With an allowance recorded	1,490	2,351
Related Allowance
With an allowance recorded	35	142
Acquired Loans | Commercial and industrial loans
Recorded Investment
Total	648	576
Unpaid Principal Balance
Total	654	635
Related Allowance
With an allowance recorded	6	59
Acquired Loans | Commercial and industrial loans | Other
Recorded Investment
With no related allowance	298	0
With an allowance recorded	350	576
Unpaid Principal Balance
With no related allowance	298	0
With an allowance recorded	356	635
Related Allowance
With an allowance recorded	6	59
Acquired Loans | Residential Mortgages
Recorded Investment
Total	490	297
Unpaid Principal Balance
Total	494	308
Related Allowance
With an allowance recorded	4	11
Acquired Loans | Residential Mortgages | 1-4 Family
Recorded Investment
With no related allowance	397	208
With an allowance recorded	93	89
Unpaid Principal Balance
With no related allowance	397	208
With an allowance recorded	97	100
Related Allowance
With an allowance recorded	4	11
Acquired Loans | Consumer Loans
Recorded Investment
Total	672	292
Unpaid Principal Balance
Total	741	406
Related Allowance
With an allowance recorded	69	114
Acquired Loans | Consumer Loans | Home equity
Recorded Investment
With an allowance recorded	672	292
Unpaid Principal Balance
With an allowance recorded	741	406
Related Allowance
With an allowance recorded	$ 69	$ 114

LOANS - Average Recorded Invest

LOANS - Average Recorded Investment and Interest Income Recognized on Impaired Loans (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Business Activities Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Average recorded investment	$ 41,014	$ 25,208
Interest income, cash basis method	495	241
Acquired Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Average recorded investment	6,417	5,418
Interest income, cash basis method	107	63
Commercial Real Estate | Business Activities Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Average recorded investment	28,101	13,406
Interest income, cash basis method	288	110
Commercial Real Estate | Acquired Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Average recorded investment	4,402	4,280
Interest income, cash basis method	83	57
Commercial Real Estate | Construction | Business Activities Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Average recorded investment, with no related allowance	0	0
Cash basis interest income recognized, with no related allowance	0	0
Recorded investment with related allowance	0	2,000
Cash basis interest income recognized, with related allowance	0	28
Commercial Real Estate | Construction | Acquired Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Average recorded investment, with no related allowance	0	0
Cash basis interest income recognized, with no related allowance	0	0
Recorded investment with related allowance	0	0
Cash basis interest income recognized, with related allowance	0	0
Commercial Real Estate | Single and multi-family | Business Activities Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Average recorded investment, with no related allowance	153	0
Cash basis interest income recognized, with no related allowance	0	0
Recorded investment with related allowance	181	97
Cash basis interest income recognized, with related allowance	0	1
Commercial Real Estate | Single and multi-family | Acquired Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Average recorded investment, with no related allowance	721	126
Cash basis interest income recognized, with no related allowance	31	2
Recorded investment with related allowance	915	825
Cash basis interest income recognized, with related allowance	12	11
Commercial Real Estate | Other | Business Activities Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Average recorded investment, with no related allowance	20,756	3,166
Cash basis interest income recognized, with no related allowance	217	0
Recorded investment with related allowance	7,011	8,143
Cash basis interest income recognized, with related allowance	71	81
Commercial Real Estate | Other | Acquired Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Average recorded investment, with no related allowance	1,272	760
Cash basis interest income recognized, with no related allowance	21	0
Recorded investment with related allowance	1,494	2,569
Cash basis interest income recognized, with related allowance	19	44
Commercial and industrial loans | Business Activities Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Average recorded investment	7,226	6,696
Interest income, cash basis method	148	97
Commercial and industrial loans | Acquired Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Average recorded investment	765	314
Interest income, cash basis method	13	0
Commercial and industrial loans | Other | Business Activities Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Average recorded investment, with no related allowance	1,350	734
Cash basis interest income recognized, with no related allowance	5	13
Recorded investment with related allowance	5,876	5,962
Cash basis interest income recognized, with related allowance	143	84
Commercial and industrial loans | Other | Acquired Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Average recorded investment, with no related allowance	403	261
Cash basis interest income recognized, with no related allowance	0	0
Recorded investment with related allowance	362	53
Cash basis interest income recognized, with related allowance	13	0
Residential Mortgages | Business Activities Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Average recorded investment	2,964	3,139
Interest income, cash basis method	32	21
Residential Mortgages | Acquired Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Average recorded investment	507	346
Interest income, cash basis method	7	3
Residential Mortgages | 1-4 Family | Business Activities Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Average recorded investment, with no related allowance	2,025	1,520
Cash basis interest income recognized, with no related allowance	18	2
Recorded investment with related allowance	939	1,619
Cash basis interest income recognized, with related allowance	14	19
Residential Mortgages | 1-4 Family | Acquired Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Average recorded investment, with no related allowance	409	12
Cash basis interest income recognized, with no related allowance	6	0
Recorded investment with related allowance	98	334
Cash basis interest income recognized, with related allowance	1	3
Consumer Loans | Business Activities Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Average recorded investment	2,723	1,967
Interest income, cash basis method	27	13
Consumer Loans | Acquired Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Average recorded investment	743	478
Interest income, cash basis method	4	3
Consumer Loans | Other | Business Activities Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Average recorded investment, with no related allowance	0	1
Cash basis interest income recognized, with no related allowance	0	0
Recorded investment with related allowance	0	106
Cash basis interest income recognized, with related allowance	0	1
Consumer Loans | Other | Acquired Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Average recorded investment, with no related allowance	0	169
Cash basis interest income recognized, with no related allowance	0	1
Recorded investment with related allowance	0	0
Cash basis interest income recognized, with related allowance	0	0
Consumer Loans | Home equity | Business Activities Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Average recorded investment, with no related allowance	1,574	663
Cash basis interest income recognized, with no related allowance	19	4
Recorded investment with related allowance	1,149	1,197
Cash basis interest income recognized, with related allowance	8	8
Consumer Loans | Home equity | Acquired Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Average recorded investment, with no related allowance	0	0
Cash basis interest income recognized, with no related allowance	0	0
Recorded investment with related allowance	743	309
Cash basis interest income recognized, with related allowance	$ 4	$ 2

LOANS - Recorded Investment and

LOANS - Recorded Investment and Number of Modifications (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2017USD ($)modification	Mar. 31, 2016USD ($)modification
Accounts, Notes, Loans and Financing Receivable [Line Items]
Number of Modifications | modification	10	4
Pre-Modification Outstanding Recorded Investment	$ 3,114	$ 1,200
Post-Modification Outstanding Recorded Investment	$ 2,598	$ 1,200
Total commercial loans | Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Number of Modifications | modification	6	2
Pre-Modification Outstanding Recorded Investment	$ 2,832	$ 1,049
Post-Modification Outstanding Recorded Investment	$ 2,333	$ 1,049
Commercial and industrial loans | Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Number of Modifications | modification	1	2
Pre-Modification Outstanding Recorded Investment	$ 24	$ 151
Post-Modification Outstanding Recorded Investment	$ 24	$ 151
Residential Mortgages | 1-4 Family
Accounts, Notes, Loans and Financing Receivable [Line Items]
Number of Modifications | modification	2
Pre-Modification Outstanding Recorded Investment	$ 205
Post-Modification Outstanding Recorded Investment	$ 188
Consumer Loans | Home equity
Accounts, Notes, Loans and Financing Receivable [Line Items]
Number of Modifications | modification	1
Pre-Modification Outstanding Recorded Investment	$ 53
Post-Modification Outstanding Recorded Investment	$ 53

LOANS - Troubled Debt Restructu

LOANS - Troubled Debt Restructurings (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2017USD ($)contract
Accounts, Notes, Loans and Financing Receivable [Line Items]
Modifications that subsequently defaulted, number of contracts	0
Total commercial loans | Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Modifications that subsequently defaulted, number of contracts	1
Modifications that subsequently defaulted, recorded investment | $	$ 113
Commercial and industrial loans | Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Modifications that subsequently defaulted, number of contracts	1
Modifications that subsequently defaulted, recorded investment | $	$ 101

LOANS - Troubled Debt Restruc49

LOANS - Troubled Debt Restructuring Activity (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Trouble Debt Restructuring on Financing Receivables [Roll Forward]
Balance at beginning of the period	$ 33,829	$ 22,048
Principal payments	(888)	(342)
TDR status change	0	2,235
Other reductions/increases	(840)	(1,487)
Newly identified TDRs	2,598	1,200
Balance at end of the period	$ 34,699	$ 23,654

LOAN LOSS ALLOWANCE - Allowance

LOAN LOSS ALLOWANCE - Allowance Activity (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016	Mar. 31, 2017	Mar. 31, 2016
Activity in the allowance for loan losses
Balance at beginning of period	$ 43,998
Provision/(releases) for loan losses	5,095	$ 4,006
Balance at end of period	45,804
Allowance For Loan Losses
Total	43,998		$ 45,804
Business Activities Loans
Activity in the allowance for loan losses
Balance at beginning of period	39,229	34,574
Charged-off loans	2,316	2,957
Recoveries on charged-off loans	175	269
Provision/(releases) for loan losses	4,375	3,612
Balance at end of period	41,463	35,498
Allowance For Loan Losses
Individually evaluated for impairment			390	$ 677
Collectively evaluated for impairment			41,073	34,821
Total	39,229	34,574	41,463	35,498
Business Activities Loans | Commercial real estate
Activity in the allowance for loan losses
Balance at beginning of period	16,405	14,508
Charged-off loans	124	1,044
Recoveries on charged-off loans	58	128
Provision/(releases) for loan losses	(224)	2,451
Balance at end of period	16,115	16,043
Allowance For Loan Losses
Individually evaluated for impairment			80	340
Collectively evaluated for impairment			16,035	15,703
Total	16,405	14,508	16,115	16,043
Business Activities Loans | Commercial and industrial loans
Activity in the allowance for loan losses
Balance at beginning of period	9,371	7,317
Charged-off loans	1,270	965
Recoveries on charged-off loans	16	74
Provision/(releases) for loan losses	3,616	2,203
Balance at end of period	11,733	8,629
Allowance For Loan Losses
Individually evaluated for impairment			123	130
Collectively evaluated for impairment			11,610	8,499
Total	9,371	7,317	11,733	8,629
Business Activities Loans | Residential mortgages
Activity in the allowance for loan losses
Balance at beginning of period	7,752	7,566
Charged-off loans	235	547
Recoveries on charged-off loans	15	0
Provision/(releases) for loan losses	244	42
Balance at end of period	7,776	7,061
Allowance For Loan Losses
Individually evaluated for impairment			137	151
Collectively evaluated for impairment			7,639	6,910
Total	7,752	7,566	7,776	7,061
Business Activities Loans | Consumer
Activity in the allowance for loan losses
Balance at beginning of period	5,447	4,956
Charged-off loans	687	401
Recoveries on charged-off loans	86	67
Provision/(releases) for loan losses	568	(553)
Balance at end of period	5,414	4,069
Allowance For Loan Losses
Individually evaluated for impairment			50	56
Collectively evaluated for impairment			5,364	4,013
Total	5,447	4,956	5,414	4,069
Business Activities Loans | Unallocated
Activity in the allowance for loan losses
Balance at beginning of period	254	227
Charged-off loans	0	0
Recoveries on charged-off loans	0	0
Provision/(releases) for loan losses	171	(531)
Balance at end of period	425	(304)
Allowance For Loan Losses
Individually evaluated for impairment			0	0
Collectively evaluated for impairment			425	(304)
Total	254	227	425	(304)
Acquired Loans
Activity in the allowance for loan losses
Balance at beginning of period	4,769	4,734
Charged-off loans	1,307	747
Recoveries on charged-off loans	159	176
Provision/(releases) for loan losses	720	394
Balance at end of period	4,341	4,557
Allowance For Loan Losses
Individually evaluated for impairment			142	245
Purchased credit-impaired loans			0	0
Collectively evaluated for impairment			4,199	4,312
Total	4,769	4,734	4,341	4,557
Acquired Loans | Commercial real estate
Activity in the allowance for loan losses
Balance at beginning of period	2,303	1,903
Charged-off loans	577	126
Recoveries on charged-off loans	10	(1)
Provision/(releases) for loan losses	392	187
Balance at end of period	2,128	1,963
Allowance For Loan Losses
Individually evaluated for impairment			63	182
Purchased credit-impaired loans			0	0
Collectively evaluated for impairment			2,065	1,781
Total	2,303	1,903	2,128	1,963
Acquired Loans | Commercial and industrial loans
Activity in the allowance for loan losses
Balance at beginning of period	1,164	1,330
Charged-off loans	436	25
Recoveries on charged-off loans	55	69
Provision/(releases) for loan losses	271	(99)
Balance at end of period	1,054	1,275
Allowance For Loan Losses
Individually evaluated for impairment			6	2
Purchased credit-impaired loans			0	0
Collectively evaluated for impairment			1,048	1,273
Total	1,164	1,330	1,054	1,275
Acquired Loans | Residential mortgages
Activity in the allowance for loan losses
Balance at beginning of period	766	976
Charged-off loans	143	310
Recoveries on charged-off loans	39	83
Provision/(releases) for loan losses	44	145
Balance at end of period	706	894
Allowance For Loan Losses
Individually evaluated for impairment			4	37
Purchased credit-impaired loans			0	0
Collectively evaluated for impairment			702	857
Total	766	976	706	894
Acquired Loans | Consumer
Activity in the allowance for loan losses
Balance at beginning of period	536	525
Charged-off loans	151	286
Recoveries on charged-off loans	55	25
Provision/(releases) for loan losses	13	161
Balance at end of period	453	425
Allowance For Loan Losses
Individually evaluated for impairment			69	24
Purchased credit-impaired loans			0	0
Collectively evaluated for impairment			384	401
Total	536	525	453	425
Acquired Loans | Unallocated
Activity in the allowance for loan losses
Balance at beginning of period	0	0
Charged-off loans	0	0
Recoveries on charged-off loans	0	0
Provision/(releases) for loan losses	0	0
Balance at end of period	0	0
Allowance For Loan Losses
Individually evaluated for impairment			0	0
Purchased credit-impaired loans			0	0
Collectively evaluated for impairment			0	0
Total	$ 0	$ 0	$ 0	$ 0

LOAN LOSS ALLOWANCE - Narrative

LOAN LOSS ALLOWANCE - Narrative (Details) $ in Millions	3 Months Ended
	Mar. 31, 2017USD ($)grade
Credit quality information
Allowance for losses on acquired loans under Subtopic ASC 310-30 | $	$ 4.3
Acquired Loans
Credit quality information
Number of grades in internal loan rating system (grade)	11
Residential Mortgages | Mortgages
Credit quality information
Number of grades in internal loan rating system (grade)	3
Residential Mortgages | Mortgages | Pass | Maximum
Credit quality information
Delinquency period of loans based on which risk rating is assigned to loans (in days)	59 days
Residential Mortgages | Mortgages | Special mention | Minimum
Credit quality information
Delinquency period of loans based on which risk rating is assigned to loans (in days)	60 days
Residential Mortgages | Mortgages | Special mention | Maximum
Credit quality information
Delinquency period of loans based on which risk rating is assigned to loans (in days)	89 days
Residential Mortgages | Mortgages | Substandard | Minimum
Credit quality information
Delinquency period of loans based on which risk rating is assigned to loans (in days)	90 days
Consumer Loans | Other
Credit quality information
Number of grades in internal loan rating system (grade)	2
Consumer Loans | Performing | Maximum | Other
Credit quality information
Period within which loans are current, based on which risk rating is assigned (in days)	119 days
Consumer Loans | Nonperforming | Minimum | Other
Credit quality information
Delinquency period of loans based on which risk rating is assigned to loans (in days)	120 days

LOAN LOSS ALLOWANCE - Loans by

LOAN LOSS ALLOWANCE - Loans by Credit Risk Rating (Details) - USD ($) $ in Thousands	Mar. 31, 2017	Dec. 31, 2016
Credit quality information
Total Loans	$ 6,655,933	$ 6,549,787
Special mention
Credit quality information
Total Loans	35,970	11,802
Substandard
Credit quality information
Total Loans	96,078	95,302
Non Accrual
Credit quality information
Total Loans	25,125	22,240
Classified
Credit quality information
Total Loans	121,203	117,542
Criticized
Credit quality information
Total Loans	157,173	129,344
Commercial Real Estate
Credit quality information
Total Loans	2,673,363	2,616,438
Commercial Real Estate | Construction
Credit quality information
Total Loans	306,110	287,509
Commercial Real Estate | Single and multi-family
Credit quality information
Total Loans	444,932	317,491
Commercial Real Estate | Other
Credit quality information
Total Loans	1,922,321	2,011,438
Commercial and industrial loans
Credit quality information
Total Loans	1,146,125	1,062,038
Commercial and industrial loans | Other
Credit quality information
Total Loans	794,133	740,768
Commercial and industrial loans | Asset based lending
Credit quality information
Total Loans	351,992	321,270
Residential Mortgages
Credit quality information
Total Loans	1,850,684	1,893,131
Residential Mortgages | Construction
Credit quality information
Total Loans	12,257	11,982
Residential Mortgages | 1-4 family
Credit quality information
Total Loans	1,838,427	1,881,149
Consumer Loans
Credit quality information
Total Loans	985,761	978,180
Consumer Loans | Home equity
Credit quality information
Total Loans	389,947	393,800
Consumer Loans | Auto and other
Credit quality information
Total Loans	595,814	584,380
Business Activities Loans
Credit quality information
Total Loans	5,413,218	5,221,307
Business Activities Loans | Special mention
Credit quality information
Total Loans	21,114	7,479
Business Activities Loans | Substandard
Credit quality information
Total Loans	52,809	51,125
Business Activities Loans | Non Accrual
Credit quality information
Total Loans	19,726	16,816
Business Activities Loans | Classified
Credit quality information
Total Loans	72,535	67,941
Business Activities Loans | Criticized
Credit quality information
Total Loans	93,649	75,420
Business Activities Loans | Commercial Real Estate
Credit quality information
Total Loans	2,026,341	1,926,344
Business Activities Loans | Commercial Real Estate | Pass
Credit quality information
Total Loans	1,964,069	1,877,374
Business Activities Loans | Commercial Real Estate | Special mention
Credit quality information
Total Loans	16,688	6,161
Business Activities Loans | Commercial Real Estate | Substandard
Credit quality information
Total Loans	45,548	42,773
Business Activities Loans | Commercial Real Estate | Doubtful
Credit quality information
Total Loans	36	36
Business Activities Loans | Commercial Real Estate | Construction
Credit quality information
Total Loans	281,134	253,302
Business Activities Loans | Commercial Real Estate | Construction | Pass
Credit quality information
Total Loans	281,134	253,302
Business Activities Loans | Commercial Real Estate | Construction | Special mention
Credit quality information
Total Loans	0	0
Business Activities Loans | Commercial Real Estate | Construction | Substandard
Credit quality information
Total Loans	0	0
Business Activities Loans | Commercial Real Estate | Construction | Doubtful
Credit quality information
Total Loans	0	0
Business Activities Loans | Commercial Real Estate | Single and multi-family
Credit quality information
Total Loans	339,259	191,819
Business Activities Loans | Commercial Real Estate | Single and multi-family | Pass
Credit quality information
Total Loans	330,460	189,310
Business Activities Loans | Commercial Real Estate | Single and multi-family | Special mention
Credit quality information
Total Loans	6,046	334
Business Activities Loans | Commercial Real Estate | Single and multi-family | Substandard
Credit quality information
Total Loans	2,753	2,175
Business Activities Loans | Commercial Real Estate | Single and multi-family | Doubtful
Credit quality information
Total Loans	0	0
Business Activities Loans | Commercial Real Estate | Other
Credit quality information
Total Loans	1,405,948	1,481,223
Business Activities Loans | Commercial Real Estate | Other | Pass
Credit quality information
Total Loans	1,352,475	1,434,762
Business Activities Loans | Commercial Real Estate | Other | Special mention
Credit quality information
Total Loans	10,642	5,827
Business Activities Loans | Commercial Real Estate | Other | Substandard
Credit quality information
Total Loans	42,795	40,598
Business Activities Loans | Commercial Real Estate | Other | Doubtful
Credit quality information
Total Loans	36	36
Business Activities Loans | Commercial and industrial loans
Credit quality information
Total Loans	1,016,775	908,102
Business Activities Loans | Commercial and industrial loans | Other
Credit quality information
Total Loans	664,783	586,832
Business Activities Loans | Commercial and industrial loans | Asset based lending
Credit quality information
Total Loans	351,992	321,270
Business Activities Loans | Commercial and industrial loans | Commercial Loan
Credit quality information
Total Loans	1,016,775	908,102
Business Activities Loans | Commercial and industrial loans | Commercial Loan | Pass
Credit quality information
Total Loans	993,453	890,974
Business Activities Loans | Commercial and industrial loans | Commercial Loan | Special mention
Credit quality information
Total Loans	3,882	123
Business Activities Loans | Commercial and industrial loans | Commercial Loan | Substandard
Credit quality information
Total Loans	16,315	13,825
Business Activities Loans | Commercial and industrial loans | Commercial Loan | Doubtful
Credit quality information
Total Loans	3,125	3,180
Business Activities Loans | Commercial and industrial loans | Commercial Loan | Other
Credit quality information
Total Loans	664,783	586,832
Business Activities Loans | Commercial and industrial loans | Commercial Loan | Other | Pass
Credit quality information
Total Loans	641,461	569,704
Business Activities Loans | Commercial and industrial loans | Commercial Loan | Other | Special mention
Credit quality information
Total Loans	3,882	123
Business Activities Loans | Commercial and industrial loans | Commercial Loan | Other | Substandard
Credit quality information
Total Loans	16,315	13,825
Business Activities Loans | Commercial and industrial loans | Commercial Loan | Other | Doubtful
Credit quality information
Total Loans	3,125	3,180
Business Activities Loans | Commercial and industrial loans | Commercial Loan | Asset based lending
Credit quality information
Total Loans	351,992	321,270
Business Activities Loans | Commercial and industrial loans | Commercial Loan | Asset based lending | Pass
Credit quality information
Total Loans	351,992	321,270
Business Activities Loans | Commercial and industrial loans | Commercial Loan | Asset based lending | Special mention
Credit quality information
Total Loans	0	0
Business Activities Loans | Commercial and industrial loans | Commercial Loan | Asset based lending | Substandard
Credit quality information
Total Loans	0	0
Business Activities Loans | Commercial and industrial loans | Commercial Loan | Asset based lending | Doubtful
Credit quality information
Total Loans	0	0
Business Activities Loans | Residential Mortgages
Credit quality information
Total Loans	1,560,307	1,594,972
Business Activities Loans | Residential Mortgages | Construction
Credit quality information
Total Loans	11,545	11,178
Business Activities Loans | Residential Mortgages | 1-4 family
Credit quality information
Total Loans	1,548,762	1,583,794
Business Activities Loans | Residential Mortgages | Mortgages
Credit quality information
Total Loans	1,560,307	1,594,971
Business Activities Loans | Residential Mortgages | Mortgages | Pass
Credit quality information
Total Loans	1,556,411	1,590,091
Business Activities Loans | Residential Mortgages | Mortgages | Special mention
Credit quality information
Total Loans	66	701
Business Activities Loans | Residential Mortgages | Mortgages | Substandard
Credit quality information
Total Loans	3,830	4,179
Business Activities Loans | Residential Mortgages | Mortgages | Construction
Credit quality information
Total Loans	11,545	11,178
Business Activities Loans | Residential Mortgages | Mortgages | Construction | Pass
Credit quality information
Total Loans	11,545	11,178
Business Activities Loans | Residential Mortgages | Mortgages | Construction | Special mention
Credit quality information
Total Loans	0	0
Business Activities Loans | Residential Mortgages | Mortgages | Construction | Substandard
Credit quality information
Total Loans	0	0
Business Activities Loans | Residential Mortgages | Mortgages | 1-4 family
Credit quality information
Total Loans	1,548,762	1,583,793
Business Activities Loans | Residential Mortgages | Mortgages | 1-4 family | Pass
Credit quality information
Total Loans	1,544,866	1,578,913
Business Activities Loans | Residential Mortgages | Mortgages | 1-4 family | Special mention
Credit quality information
Total Loans	66	701
Business Activities Loans | Residential Mortgages | Mortgages | 1-4 family | Substandard
Credit quality information
Total Loans	3,830	4,179
Business Activities Loans | Consumer Loans
Credit quality information
Total Loans	809,795	791,889
Business Activities Loans | Consumer Loans | Performing
Credit quality information
Total Loans	806,222	788,262
Business Activities Loans | Consumer Loans | Nonperforming
Credit quality information
Total Loans	3,573	3,627
Business Activities Loans | Consumer Loans | Home equity
Credit quality information
Total Loans	312,639	313,521
Business Activities Loans | Consumer Loans | Home equity | Performing
Credit quality information
Total Loans	310,239	310,846
Business Activities Loans | Consumer Loans | Home equity | Nonperforming
Credit quality information
Total Loans	2,400	2,675
Business Activities Loans | Consumer Loans | Auto and other
Credit quality information
Total Loans	497,156	478,368
Business Activities Loans | Consumer Loans | Auto and other | Performing
Credit quality information
Total Loans	495,983	477,416
Business Activities Loans | Consumer Loans | Auto and other | Nonperforming
Credit quality information
Total Loans	1,173	952
Acquired Loans
Credit quality information
Total Loans	1,242,715	1,328,480
Acquired Loans | Special mention
Credit quality information
Total Loans	14,856	4,323
Acquired Loans | Substandard
Credit quality information
Total Loans	43,269	44,177
Acquired Loans | Non Accrual
Credit quality information
Total Loans	5,399	5,424
Acquired Loans | Classified
Credit quality information
Total Loans	48,668	49,601
Acquired Loans | Criticized
Credit quality information
Total Loans	63,524	53,924
Acquired Loans | Commercial Real Estate
Credit quality information
Total Loans	647,022	690,094
Acquired Loans | Commercial Real Estate | Pass
Credit quality information
Total Loans	598,608	649,437
Acquired Loans | Commercial Real Estate | Special mention
Credit quality information
Total Loans	12,730	2,529
Acquired Loans | Commercial Real Estate | Substandard
Credit quality information
Total Loans	35,684	38,128
Acquired Loans | Commercial Real Estate | Construction
Credit quality information
Total Loans	24,976	34,207
Acquired Loans | Commercial Real Estate | Construction | Pass
Credit quality information
Total Loans	24,276	33,461
Acquired Loans | Commercial Real Estate | Construction | Special mention
Credit quality information
Total Loans	0	0
Acquired Loans | Commercial Real Estate | Construction | Substandard
Credit quality information
Total Loans	700	746
Acquired Loans | Commercial Real Estate | Single and multi-family
Credit quality information
Total Loans	105,673	125,672
Acquired Loans | Commercial Real Estate | Single and multi-family | Pass
Credit quality information
Total Loans	100,195	119,414
Acquired Loans | Commercial Real Estate | Single and multi-family | Special mention
Credit quality information
Total Loans	845	907
Acquired Loans | Commercial Real Estate | Single and multi-family | Substandard
Credit quality information
Total Loans	4,633	5,351
Acquired Loans | Commercial Real Estate | Other
Credit quality information
Total Loans	516,373	530,215
Acquired Loans | Commercial Real Estate | Other | Pass
Credit quality information
Total Loans	474,137	496,562
Acquired Loans | Commercial Real Estate | Other | Special mention
Credit quality information
Total Loans	11,885	1,622
Acquired Loans | Commercial Real Estate | Other | Substandard
Credit quality information
Total Loans	30,351	32,031
Acquired Loans | Commercial Real Estate | Commercial Loan
Credit quality information
Total Loans	129,350	153,936
Acquired Loans | Commercial Real Estate | Commercial Loan | Pass
Credit quality information
Total Loans	120,511	147,102
Acquired Loans | Commercial Real Estate | Commercial Loan | Special mention
Credit quality information
Total Loans	1,421	1,260
Acquired Loans | Commercial Real Estate | Commercial Loan | Substandard
Credit quality information
Total Loans	7,418	5,574
Acquired Loans | Commercial Real Estate | Commercial Loan | Other
Credit quality information
Total Loans	129,350	153,936
Acquired Loans | Commercial Real Estate | Commercial Loan | Other | Pass
Credit quality information
Total Loans	120,511	147,102
Acquired Loans | Commercial Real Estate | Commercial Loan | Other | Special mention
Credit quality information
Total Loans	1,421	1,260
Acquired Loans | Commercial Real Estate | Commercial Loan | Other | Substandard
Credit quality information
Total Loans	7,418	5,574
Acquired Loans | Commercial Real Estate | Commercial Loan | Asset based lending
Credit quality information
Total Loans	0	0
Acquired Loans | Commercial Real Estate | Commercial Loan | Asset based lending | Pass
Credit quality information
Total Loans	0	0
Acquired Loans | Commercial Real Estate | Commercial Loan | Asset based lending | Special mention
Credit quality information
Total Loans	0	0
Acquired Loans | Commercial Real Estate | Commercial Loan | Asset based lending | Substandard
Credit quality information
Total Loans	0	0
Acquired Loans | Commercial and industrial loans
Credit quality information
Total Loans	129,350	153,936
Acquired Loans | Commercial and industrial loans | Other
Credit quality information
Total Loans	129,350	153,936
Acquired Loans | Commercial and industrial loans | Asset based lending
Credit quality information
Total Loans	0	0
Acquired Loans | Residential Mortgages
Credit quality information
Total Loans	290,377	298,159
Acquired Loans | Residential Mortgages | Construction
Credit quality information
Total Loans	712	804
Acquired Loans | Residential Mortgages | 1-4 family
Credit quality information
Total Loans	289,665	297,355
Acquired Loans | Residential Mortgages | Mortgages
Credit quality information
Total Loans	290,377	298,159
Acquired Loans | Residential Mortgages | Mortgages | Pass
Credit quality information
Total Loans	287,620	295,787
Acquired Loans | Residential Mortgages | Mortgages | Special mention
Credit quality information
Total Loans	88	343
Acquired Loans | Residential Mortgages | Mortgages | Substandard
Credit quality information
Total Loans	2,669	2,029
Acquired Loans | Residential Mortgages | Mortgages | Construction
Credit quality information
Total Loans	712	804
Acquired Loans | Residential Mortgages | Mortgages | Construction | Pass
Credit quality information
Total Loans	712	804
Acquired Loans | Residential Mortgages | Mortgages | Construction | Special mention
Credit quality information
Total Loans	0	0
Acquired Loans | Residential Mortgages | Mortgages | Construction | Substandard
Credit quality information
Total Loans	0	0
Acquired Loans | Residential Mortgages | Mortgages | 1-4 family
Credit quality information
Total Loans	289,665	297,355
Acquired Loans | Residential Mortgages | Mortgages | 1-4 family | Pass
Credit quality information
Total Loans	286,908	294,983
Acquired Loans | Residential Mortgages | Mortgages | 1-4 family | Special mention
Credit quality information
Total Loans	88	343
Acquired Loans | Residential Mortgages | Mortgages | 1-4 family | Substandard
Credit quality information
Total Loans	2,669	2,029
Acquired Loans | Consumer Loans
Credit quality information
Total Loans	175,966	186,291
Acquired Loans | Consumer Loans | Performing
Credit quality information
Total Loans	174,431	184,879
Acquired Loans | Consumer Loans | Nonperforming
Credit quality information
Total Loans	1,535	1,412
Acquired Loans | Consumer Loans | Home equity
Credit quality information
Total Loans	77,308	80,279
Acquired Loans | Consumer Loans | Home equity | Performing
Credit quality information
Total Loans	76,470	79,762
Acquired Loans | Consumer Loans | Home equity | Nonperforming
Credit quality information
Total Loans	838	517
Acquired Loans | Consumer Loans | Auto and other
Credit quality information
Total Loans	98,658	106,012
Acquired Loans | Consumer Loans | Auto and other | Performing
Credit quality information
Total Loans	97,961	105,117
Acquired Loans | Consumer Loans | Auto and other | Nonperforming
Credit quality information
Total Loans	$ 697	$ 895

DEPOSITS (Details)

DEPOSITS (Details) - USD ($) $ in Thousands	Mar. 31, 2017	Dec. 31, 2016
Deposits [Abstract]
Time less than $250,000	$ 2,093,791	$ 2,015,332
Time $250,000 or more	325,477	318,211
Total time deposits	2,419,268	2,333,543
Brokered time deposits	953,800	787,900
Reciprocal deposits	$ 114,700	$ 113,400

BORROWED FUNDS - Summary of Bor

BORROWED FUNDS - Summary of Borrowed Funds (Details) - USD ($) $ in Thousands	Mar. 31, 2017	Dec. 31, 2016
Debt Instrument [Line Items]
Short-term borrowings	$ 1,136,801	$ 1,082,044
Long-term borrowings	247,126	231,953
Total borrowings	$ 1,383,927	$ 1,313,997
Weighted average rate on short-term borrowings	0.93%	0.72%
Weighted average rate on long-term borrowings	3.19%	3.35%
Weighted Average Rate	1.33%	1.19%
Advances from the FHLB
Debt Instrument [Line Items]
Short-term borrowings	$ 1,136,801	$ 1,072,044
Long-term borrowings	$ 157,920	$ 142,792
Weighted average rate on short-term borrowings	0.93%	0.71%
Weighted average rate on long-term borrowings	1.43%	1.53%
Other borrowings
Debt Instrument [Line Items]
Short-term borrowings	$ 0	$ 10,000
Weighted average rate on short-term borrowings	0.00%	2.42%
Subordinated borrowings
Debt Instrument [Line Items]
Long-term borrowings	$ 73,742	$ 73,697
Weighted average rate on long-term borrowings	7.00%	7.00%
Junior subordinated borrowings
Debt Instrument [Line Items]
Long-term borrowings	$ 15,464	$ 15,464
Weighted average rate on long-term borrowings	2.90%	2.77%

BORROWED FUNDS - Narrative (Det

BORROWED FUNDS - Narrative (Details) - USD ($)	1 Months Ended	3 Months Ended
	Sep. 30, 2012	Mar. 31, 2017	Dec. 31, 2016
Debt Instrument [Line Items]
Line of credit, current		$ 3,000,000
Short-term debt		1,136,801,000	$ 1,082,044,000
Long-term borrowings		247,126,000	231,953,000
Advances from the FHLB
Debt Instrument [Line Items]
Long-term line of credit		0	0
Short-term debt		1,136,801,000	1,072,044,000
Long-term borrowings		157,920,000	142,792,000
Federal Reserve Bank Advances
Debt Instrument [Line Items]
Short-term debt		0	0
Federal Home Loan Bank Certificates And Obligations F H L B Callable Advances
Debt Instrument [Line Items]
Long-term borrowings		6,000,000	11,000,000
Federal Home Loan Bank Certificates And Obligations F H L B Amortizing Advances
Debt Instrument [Line Items]
Long-term borrowings		1,100,000	1,200,000
Subordinated borrowings
Debt Instrument [Line Items]
Long-term borrowings		73,742,000	73,697,000
Maturity period (in years)	15 years
Principal amount of debt issued	$ 75,000,000
Discount rate (as a percent)	1.15%
Fixed interest rate (as percent)	6.875%
Maturity period with fixed interest rate (in months)	10 years
Subordinated borrowings | Three-month LIBOR rate
Debt Instrument [Line Items]
Interest rate margin (as percent)	5.113%
Unamortized debt issuance expense		675,000	706,000
Junior subordinated borrowings
Debt Instrument [Line Items]
Long-term borrowings		$ 15,464,000	$ 15,464,000
Junior subordinated borrowings | Trust I
Debt Instrument [Line Items]
Common stock of trust (as 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 (as percent)		2.90%	2.77%
Period up to which interest payments can be deferred (in years)		5 years
Junior subordinated borrowings | LIBOR | Trust I
Debt Instrument [Line Items]
Interest rate margin (as percent)		1.85%

BORROWED FUNDS - Summary of Mat

BORROWED FUNDS - Summary of Maturities of FHLB (Details) - Fixed rate advances $ in Thousands	Mar. 31, 2017USD ($)
Principal
2,017	$ 1,160,800
2,018	118,879
2,019	0
2,020	5,184
2021 and beyond	9,858
Total FHLB advances	$ 1,294,721
Weighted Average
Weighted Average Rate (as a percent)
2,017	0.95%
2,018	1.17%
2,019	0.00%
2,020	1.94%
2021 and beyond	2.73%
Total FHLB advances	0.99%

CAPITAL RATIOS AND SHAREHOLDE57

CAPITAL RATIOS AND SHAREHOLDERS' EQUITY - Actual and Required Capital Ratios (Details)	Mar. 31, 2017	Dec. 31, 2016
Tier 1 capital to risk-weighted assets
Total capital to risk weighted assets	11.80%	11.90%
Common equity tier 1 capital to risk weighted assets	9.90%	9.90%
Tier 1 capital to risk weighted assets	10.10%	10.10%
Tier 1 capital to average assets	7.80%	7.90%
Regulatory minimum to be well capitalized, Total capital to risk weighted assets (as percent)	10.00%	10.00%
Regulatory minimum to be well capitalized, Common equity tier 1 capital to risk weighted assets (as percent)	6.50%	6.50%
Regulatory minimum to be well capitalized, Tier 1 capital to risk weighted assets (as percent)	8.00%	8.00%
Regulatory minimum to be well capitalized, Tier 1 capital to average assets (as percent)	5.00%	5.00%
Bank
Tier 1 capital to risk-weighted assets
Total capital to risk weighted assets	11.10%	11.20%
Common equity tier 1 capital to risk weighted assets	9.90%	10.00%
Tier 1 capital to risk weighted assets	9.90%	10.00%
Tier 1 capital to average assets	7.70%	7.80%
Regulatory minimum to be well capitalized, Total capital to risk weighted assets (as percent)	10.00%	10.00%
Regulatory minimum to be well capitalized, Common equity tier 1 capital to risk weighted assets (as percent)	6.50%	6.50%
Regulatory minimum to be well capitalized, Tier 1 capital to risk weighted assets (as percent)	8.00%	8.00%
Regulatory minimum to be well capitalized, Tier 1 capital to average assets (as percent)	5.00%	5.00%

CAPITAL RATIOS AND SHAREHOLDE58

CAPITAL RATIOS AND SHAREHOLDERS' EQUITY - Components of AOCI (Details) - USD ($) $ in Thousands	Mar. 31, 2017	Dec. 31, 2016	Mar. 31, 2016	Dec. 31, 2015
Total shareholders’ equity	$ 1,099,553	$ 1,093,298	$ 905,837	$ 887,189
Net unrealized holding gain on AFS securities
Other accumulated comprehensive income (loss), before tax:	15,743	25,176
Income taxes related to items of accumulated other comprehensive income:	(6,095)	(9,636)
Total shareholders’ equity	9,648	15,541	14,730	3,880
Net unrealized loss on cash flow hedging derivatives
Other accumulated comprehensive income (loss), before tax:	0	(6,573)
Income taxes related to items of accumulated other comprehensive income:	0	2,589
Total shareholders’ equity	0	(3,985)	(7,806)	(5,108)
Net unrealized holding loss on pension plans
Other accumulated comprehensive income (loss), before tax:	(2,954)	(2,954)
Income taxes related to items of accumulated other comprehensive income:	1,164	1,164
Total shareholders’ equity	(1,790)	(1,790)	(2,077)	(2,077)
Accumulated other comprehensive (loss) income
Total shareholders’ equity	$ 7,858	$ 9,766	$ 4,847	$ (3,305)

CAPITAL RATIOS AND SHAREHOLDE59

CAPITAL RATIOS AND SHAREHOLDERS' EQUITY - Components of OCI (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Net unrealized gain (loss) arising during the period
Net of Tax	$ 1,695	$ 7,931
Less: reclassification adjustment for gains (losses) realized in net income
Net of Tax	3,603	(221)
Other comprehensive (loss)
Before Tax	(2,860)	13,200
Tax Effect	952	(5,048)
Total other comprehensive (loss) income	(1,908)	8,152
Net unrealized holding gain on AFS securities
Net unrealized gain (loss) arising during the period
Before Tax	3,137	17,742
Tax Effect	(1,173)	(6,869)
Net of Tax	1,964	10,873
Less: reclassification adjustment for gains (losses) realized in net income
Before Tax	12,570	36
Tax Effect	(4,713)	(13)
Net of Tax	7,857	23
Other comprehensive (loss)
Before Tax	(9,433)	17,706
Tax Effect	3,540	(6,856)
Total other comprehensive (loss) income	(5,893)	10,850
Net unrealized loss on cash flow hedging derivatives
Net unrealized gain (loss) arising during the period
Before Tax	(449)	(4,914)
Tax Effect	180	1,972
Net of Tax	(269)	(2,942)
Less: reclassification adjustment for gains (losses) realized in net income
Before Tax	(7,022)	(408)
Tax Effect	2,768	164
Net of Tax	(4,254)	(244)
Other comprehensive (loss)
Before Tax	6,573	(4,506)
Tax Effect	(2,588)	1,808
Total other comprehensive (loss) income	$ 3,985	$ (2,698)

CAPITAL RATIOS AND SHAREHOLDE60

CAPITAL RATIOS AND SHAREHOLDERS' EQUITY - Changes in AOCI (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Balance at Beginning of Period	$ 1,093,298	$ 887,189
Other comprehensive gain (loss) before reclassifications	1,695	7,931
Less: amounts reclassified from accumulated other comprehensive income (loss)	3,603	(221)
Total other comprehensive (loss) income	(1,908)	8,152
Balance at End of Period	1,099,553	905,837
Net unrealized holding gain on AFS securities
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Balance at Beginning of Period	15,541	3,880
Other comprehensive gain (loss) before reclassifications	1,964	10,873
Less: amounts reclassified from accumulated other comprehensive income (loss)	7,857	23
Total other comprehensive (loss) income	(5,893)	10,850
Balance at End of Period	9,648	14,730
Net unrealized loss on cash flow hedging derivatives
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Balance at Beginning of Period	(3,985)	(5,108)
Other comprehensive gain (loss) before reclassifications	(269)	(2,942)
Less: amounts reclassified from accumulated other comprehensive income (loss)	(4,254)	(244)
Total other comprehensive (loss) income	3,985	(2,698)
Balance at End of Period	0	(7,806)
Net unrealized holding loss on pension plans
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Balance at Beginning of Period	(1,790)	(2,077)
Other comprehensive gain (loss) before reclassifications	0	0
Less: amounts reclassified from accumulated other comprehensive income (loss)	0	0
Total other comprehensive (loss) income	0	0
Balance at End of Period	(1,790)	(2,077)
Accumulated other comprehensive (loss) income
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Balance at Beginning of Period	9,766	(3,305)
Total other comprehensive (loss) income	(1,908)	8,152
Balance at End of Period	$ 7,858	$ 4,847

CAPITAL RATIOS AND SHAREHOLDE61

CAPITAL RATIOS AND SHAREHOLDERS' EQUITY - Amounts Reclassified Out of AOCI (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Amounts reclassified out of each component of accumulated other comprehensive income
Non-interest income	$ 34,757	$ 15,630
Interest expense	(13,823)	(10,779)
Non-interest expense	(74,326)	(47,100)
Tax (expense) benefit	(6,762)	(6,220)
Net income	15,460	16,001
Amount Reclassified From Accumulated Other Comprehensive Income (loss)
Amounts reclassified out of each component of accumulated other comprehensive income
Net income	3,603	(221)
Realized gains on AFS securities: | Amount Reclassified From Accumulated Other Comprehensive Income (loss)
Amounts reclassified out of each component of accumulated other comprehensive income
Non-interest income	12,570	36
Tax (expense) benefit	(4,713)	(13)
Net income	7,857	23
Realized (losses) on cash flow hedging derivatives: | Amount Reclassified From Accumulated Other Comprehensive Income (loss)
Amounts reclassified out of each component of accumulated other comprehensive income
Interest expense	(393)	(408)
Non-interest expense	(6,629)	0
Tax (expense) benefit	2,768	164
Net income	$ (4,254)	$ (244)

EARNINGS PER SHARE - Schedule o

EARNINGS PER SHARE - Schedule of Earnings per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Earnings per share
Net income	$ 15,460	$ 16,001
Average number of common shares issued (in shares)	36,732	32,162
Less: average number of treasury shares (in shares)	1,020	1,138
Less: average number of unvested stock award shares (in shares)	432	513
Average number of basic common shares outstanding (in shares)	35,280	30,511
Average number of diluted common shares outstanding (in shares)	35,452	30,688
Earnings per share:
Basic (in dollars per share)	$ 0.44	$ 0.52
Diluted (in dollars per share)	$ 0.44	$ 0.52
Unvested Stock Award shares
Earnings per share
Plus: dilutive effect of share-based payment arrangements (in shares)	126	119
Options
Earnings per share
Plus: dilutive effect of share-based payment arrangements (in shares)	46	58

EARNINGS PER SHARE - Narrative

EARNINGS PER SHARE - Narrative (Details) - shares shares in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Unvested Stock Award shares
Anti-dilutive securities
Securities excluded from the earnings per share calculations (in shares)	306	394
Options
Anti-dilutive securities
Securities excluded from the earnings per share calculations (in shares)	55	206

STOCK-BASED COMPENSATION PLAN64

STOCK-BASED COMPENSATION PLANS (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Stock-based compensation plans
Total compensation cost	$ 1,200	$ 1,200
Non-Vested Stock Awards Outstanding
Non-vested Stock Awards Outstanding, Number of Shares
Balance at the beginning of the period (in shares)	448
Granted (in shares)	81
Stock awards vested (in shares)	(101)	(62)
Forfeited (in shares)	(2)
Balance at the end of the period (in shares)	426
Non-vested Stock Awards Outstanding, Weighted-Average Grant Date Fair Value
Balance at the beginning of the period (in dollars per share)	$ 26.28
Granted (in dollars per share)	35.47
Stock awards vested (in dollars per share)	25.35
Forfeited (in dollars per share)	26.31
Balance at the end of the period (in dollars per share)	$ 28.49
Stock Options Outstanding
Stock Options Outstanding, Number of Shares
Balance at the beginning of the period (in shares)	109
Stock options exercised (in shares)	(6)
Expired (in shares)	(10)
Balance at the end of the period (in shares)	93
Exercisable options at the end of the period (in shares)	93
Stock Options Outstanding, Weighted-Average Exercise Price
Balance at the beginning of the period (in dollars per share)	$ 15.72
Stock options exercised (in dollars per share)	14.23
Expired (in dollars per share)	33.46
Balance at the end of the period (in dollars per share)	13.91
Exercisable options at the end of the period (in dollars per share)	$ 13.91
Stock-based compensation plans
Proceeds from stock option exercises	$ 81	$ 25

DERIVATIVE INSTRUMENTS AND HE65

DERIVATIVE INSTRUMENTS AND HEDGING ACTIVITIES - Narrative (Details)	Feb. 07, 2017USD ($)	Mar. 31, 2017USD ($)contract	Mar. 31, 2016USD ($)	Dec. 31, 2016USD ($)
Derivative [Line Items]
Notional amount		$ 2,113,739,000		$ 2,199,862,000
Amortized cost of securities pledged as collateral to derivative counterparties		28,600,000
Fair value of securities as pledged collateral to derivative counterparties		28,600,000
Interest expense		13,823,000	$ 10,779,000
Commercial counterparties
Derivative [Line Items]
Net asset position		9,800,000		11,500,000
Amount Reclassified From Accumulated Other Comprehensive Income (loss) | Accumulated net gain (loss) from cash flow hedges
Derivative [Line Items]
Interest expense	$ 6,600,000
Interest rate swaps
Derivative [Line Items]
Notional amount		11,200,000
Derivative liability		11,532,000		19,772,000
Amount of collateral posted for the net liability positions		6,600,000		19,800,000
Interest rate swaps | Commercial counterparties
Derivative [Line Items]
Derivative liability		4,956,000		4,384,000
Interest rate swaps | Institutional counterparties
Derivative [Line Items]
Derivative liability		6,576,000		15,388,000
Not Designated as Hedging Instrument
Derivative [Line Items]
Notional amount		274,843,000		$ 208,145,000
Economic hedges
Derivative [Line Items]
Notional amount		1,800,000,000
Credit valuation adjustments		$ (162,000)
Economic hedges | Tax advantaged economic development bonds
Derivative [Line Items]
Fixed rate of interest (as percent)		5.09%
Maturity period (in years)		21 years
Economic hedges | Interest rate swaps
Derivative [Line Items]
Notional amount		$ 1,400,000,000
Economic hedges | Risk participation agreements with dealer banks
Derivative [Line Items]
Notional amount		92,700,000
Economic hedges | Forward sale commitments
Derivative [Line Items]
Notional amount		$ 321,200,000
Cash flow hedges
Derivative [Line Items]
Durations of derivative instruments (in years)		3 years
Amount of ineffectiveness		$ 0	$ 0
Cash flow hedges | Interest rate swaps
Derivative [Line Items]
Number of instruments (contract) | contract		6
Cash flow hedges | Interest rate swaps | FHLB borrowings
Derivative [Line Items]
Notional amount	$ 300,000,000	$ 300,000,000

DERIVATIVE INSTRUMENTS AND HE66

DERIVATIVE INSTRUMENTS AND HEDGING ACTIVITIES - Derivative Assets and Liabilities (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2017	Dec. 31, 2016	Feb. 07, 2017
Interest rate swap agreements and non-hedging derivative assets and liabilities
Notional amount	$ 2,113,739	$ 2,199,862
Estimated fair value asset (liability)	5,061	(2,804)
Interest rate swaps
Interest rate swap agreements and non-hedging derivative assets and liabilities
Notional amount	11,200
Total cash flow hedges | Interest rate swaps | FHLB borrowings
Interest rate swap agreements and non-hedging derivative assets and liabilities
Notional amount	300,000		$ 300,000
Total economic hedges
Interest rate swap agreements and non-hedging derivative assets and liabilities
Notional amount	1,800,000
Total economic hedges | Interest rate swaps
Interest rate swap agreements and non-hedging derivative assets and liabilities
Notional amount	1,400,000
Total economic hedges | Risk participation agreements with dealer banks
Interest rate swap agreements and non-hedging derivative assets and liabilities
Notional amount	92,700
Total economic hedges | Forward sale commitments
Interest rate swap agreements and non-hedging derivative assets and liabilities
Notional amount	321,200
Designated as Hedging Instrument | Total cash flow hedges
Interest rate swap agreements and non-hedging derivative assets and liabilities
Notional amount	0	300,000
Estimated fair value asset (liability)	0	(6,573)
Designated as Hedging Instrument | Total cash flow hedges | Interest rate swaps | FHLB borrowings
Interest rate swap agreements and non-hedging derivative assets and liabilities
Notional amount	$ 0	$ 300,000
Weighted average maturity		2 years 3 months 18 days
Weighted average rate, received (as percent)	0.00%	0.63%
Weighted average rate, contract pay rate (as percent)	0.00%	2.29%
Estimated fair value asset (liability)	$ 0	$ (6,573)
Designated as Hedging Instrument | Total economic hedges
Interest rate swap agreements and non-hedging derivative assets and liabilities
Notional amount	1,838,896	1,691,717
Estimated fair value asset (liability)	(3,000)	(969)
Designated as Hedging Instrument | Total economic hedges | Interest rate swaps | Tax advantaged economic development bonds
Interest rate swap agreements and non-hedging derivative assets and liabilities
Notional amount	$ 11,230	$ 11,386
Weighted average maturity	12 years 8 months 24 days	12 years 10 months 24 days
Weighted average rate, received (as percent)	1.15%	0.98%
Weighted average rate, contract pay rate (as percent)	5.09%	5.09%
Estimated fair value asset (liability)	$ (1,899)	$ (2,021)
Designated as Hedging Instrument | Total economic hedges | Interest rate swaps | Loans with commercial loan customers
Interest rate swap agreements and non-hedging derivative assets and liabilities
Notional amount	$ 706,862	$ 668,541
Weighted average maturity	6 years 2 months 10 days	6 years 2 months 12 days
Weighted average rate, received (as percent)	2.57%	2.43%
Weighted average rate, contract pay rate (as percent)	4.20%	4.21%
Estimated fair value asset (liability)	$ (4,624)	$ (6,752)
Designated as Hedging Instrument | Total economic hedges | Reverse interest rate swaps | Loans with commercial loan customers
Interest rate swap agreements and non-hedging derivative assets and liabilities
Notional amount	$ 706,862	$ 668,541
Weighted average maturity	6 years 2 months 10 days	6 years 2 months 12 days
Weighted average rate, received (as percent)	4.20%	4.21%
Weighted average rate, contract pay rate (as percent)	2.57%	2.43%
Estimated fair value asset (liability)	$ 4,787	$ 7,077
Designated as Hedging Instrument | Total economic hedges | Risk participation agreements with dealer banks
Interest rate swap agreements and non-hedging derivative assets and liabilities
Notional amount	$ 92,708	$ 83,360
Weighted average maturity	10 years 8 months 15 days	11 years 6 months 20 days
Estimated fair value asset (liability)	$ (13)	$ 5
Designated as Hedging Instrument | Total economic hedges | Forward sale commitments
Interest rate swap agreements and non-hedging derivative assets and liabilities
Notional amount	$ 321,234	$ 259,889
Weighted average maturity	2 months 2 days	2 months 12 days
Estimated fair value asset (liability)	$ (1,251)	$ 722
Not Designated as Hedging Instrument
Interest rate swap agreements and non-hedging derivative assets and liabilities
Notional amount	274,843	208,145
Estimated fair value asset (liability)	8,061	4,738
Not Designated as Hedging Instrument | Commitments to lend
Interest rate swap agreements and non-hedging derivative assets and liabilities
Notional amount	$ 274,843	$ 208,145
Weighted average maturity	2 months 2 days	2 months 12 days
Estimated fair value asset (liability)	$ 8,061	$ 4,738

DERIVATIVE INSTRUMENTS AND HE67

DERIVATIVE INSTRUMENTS AND HEDGING ACTIVITIES - Interest Rate Derivatives (Details) - FHLB borrowings - Interest rate swaps - Total cash flow hedges - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Derivative [Line Items]
Unrealized (loss) recognized in accumulated other comprehensive loss	$ (449)	$ (4,914)
Net tax (expense) benefit on items recognized in accumulated other comprehensive income	(2,589)	1,808
Other comprehensive gain (loss) recorded in accumulated other comprehensive income, net of reclassification adjustments and tax effects	3,984	(2,698)
Interest Expense
Derivative [Line Items]
Reclassification on unrealized (loss) from accumulated other comprehensive income	(393)	(408)
Other Non-interest Expense
Derivative [Line Items]
Reclassification on unrealized (loss) from accumulated other comprehensive income	$ (6,629)	$ 0

DERIVATIVE INSTRUMENTS AND HE68

DERIVATIVE INSTRUMENTS AND HEDGING ACTIVITIES - Economic Hedges and Non-hedging Derivatives (Details) - USD ($) $ in Thousands	3 Months Ended		12 Months Ended
	Mar. 31, 2017	Mar. 31, 2016	Dec. 31, 2016	Feb. 07, 2017
Derivative [Line Items]
Notional amount	$ 2,113,739		$ 2,199,862
Estimated fair value asset (liability)	5,061		(2,804)
Economic hedges
Derivative [Line Items]
Notional amount	1,800,000
Interest rate swaps
Derivative [Line Items]
Notional amount	11,200
Interest rate swaps | Total cash flow hedges | FHLB borrowings
Derivative [Line Items]
Notional amount	300,000			$ 300,000
Interest rate swaps | Economic hedges
Derivative [Line Items]
Notional amount	1,400,000
Interest rate swaps | Economic hedges | Industrial revenue bond
Derivative [Line Items]
Unrealized gain (loss) recognized in other non-interest income	122	$ (539)
Interest rate swaps | Economic hedges | Loans with commercial loan customers
Derivative [Line Items]
Unrealized gain (loss) recognized in other non-interest income	1,098	(13,597)
(Unfavorable) Favorable change in credit valuation adjustment recognized in other non-interest income	(162)	(61)
Reverse interest rate swaps | Economic hedges | Loans with commercial loan customers
Derivative [Line Items]
Unrealized gain (loss) recognized in other non-interest income	(1,098)	13,597
Risk participation agreements with dealer banks | Economic hedges
Derivative [Line Items]
Notional amount	92,700
Unrealized gain (loss) recognized in other non-interest income	(18)	83
Forward sale commitments | Economic hedges
Derivative [Line Items]
Notional amount	321,200
Unrealized gain (loss) recognized in other non-interest income	(1,251)	(447)
Realized gain (loss) in other non-interest income	(2,906)	(383)
Commitments to lend | Non-hedging derivatives:
Derivative [Line Items]
Unrealized gain (loss) recognized in other non-interest income	8,061	802
Realized gain (loss) in other non-interest income	8,774	$ 849
Designated as Hedging Instrument | Total cash flow hedges
Derivative [Line Items]
Notional amount	0		300,000
Estimated fair value asset (liability)	0		(6,573)
Designated as Hedging Instrument | Economic hedges
Derivative [Line Items]
Notional amount	1,838,896		1,691,717
Estimated fair value asset (liability)	(3,000)		(969)
Designated as Hedging Instrument | Interest rate swaps | Total cash flow hedges | FHLB borrowings
Derivative [Line Items]
Notional amount	$ 0		$ 300,000
Weighted average maturity			2 years 3 months 18 days
Weighted average rate, received (as percent)	0.00%		0.63%
Weighted average rate, contract pay rate (as percent)	0.00%		2.29%
Estimated fair value asset (liability)	$ 0		$ (6,573)
Designated as Hedging Instrument | Interest rate swaps | Economic hedges | Loans with commercial loan customers
Derivative [Line Items]
Notional amount	$ 706,862		$ 668,541
Weighted average maturity	6 years 2 months 10 days		6 years 2 months 12 days
Weighted average rate, received (as percent)	2.57%		2.43%
Weighted average rate, contract pay rate (as percent)	4.20%		4.21%
Estimated fair value asset (liability)	$ (4,624)		$ (6,752)
Designated as Hedging Instrument | Reverse interest rate swaps | Economic hedges | Loans with commercial loan customers
Derivative [Line Items]
Notional amount	$ 706,862		$ 668,541
Weighted average maturity	6 years 2 months 10 days		6 years 2 months 12 days
Weighted average rate, received (as percent)	4.20%		4.21%
Weighted average rate, contract pay rate (as percent)	2.57%		2.43%
Estimated fair value asset (liability)	$ 4,787		$ 7,077
Designated as Hedging Instrument | Risk participation agreements with dealer banks | Economic hedges
Derivative [Line Items]
Notional amount	$ 92,708		$ 83,360
Weighted average maturity	10 years 8 months 15 days		11 years 6 months 20 days
Estimated fair value asset (liability)	$ (13)		$ 5
Designated as Hedging Instrument | Forward sale commitments | Economic hedges
Derivative [Line Items]
Notional amount	$ 321,234		$ 259,889
Weighted average maturity	2 months 2 days		2 months 12 days
Estimated fair value asset (liability)	$ (1,251)		$ 722

DERIVATIVE INSTRUMENTS AND HE69

DERIVATIVE INSTRUMENTS AND HEDGING ACTIVITIES - Offsetting of Financial Assets and Derivative Assets (Details) - Interest rate swaps - USD ($) $ in Thousands	Mar. 31, 2017	Dec. 31, 2016
Offsetting of Financial Assets and Derivative Assets
Gross amounts of recognized assets	$ 9,784	$ 11,510
Gross amounts offset in the Statements of Condition	0	0
Net amounts of assets presented in the Statements of Condition	9,784	11,510
Gross amounts not offset in the Statements of Condition, financial instruments	0	0
Gross amounts not offset in the Statements of Condition, cash collateral received	0	0
Net amount	9,784	11,510
Institutional counterparties
Offsetting of Financial Assets and Derivative Assets
Gross amounts of recognized assets	41	49
Gross amounts offset in the Statements of Condition	0	0
Net amounts of assets presented in the Statements of Condition	41	49
Gross amounts not offset in the Statements of Condition, financial instruments	0	0
Gross amounts not offset in the Statements of Condition, cash collateral received	0	0
Net amount	41	49
Commercial counterparties
Offsetting of Financial Assets and Derivative Assets
Gross amounts of recognized assets	9,743	11,461
Gross amounts offset in the Statements of Condition	0	0
Net amounts of assets presented in the Statements of Condition	9,743	11,461
Gross amounts not offset in the Statements of Condition, financial instruments	0	0
Gross amounts not offset in the Statements of Condition, cash collateral received	0	0
Net amount	$ 9,743	$ 11,461

DERIVATIVE INSTRUMENTS AND HE70

DERIVATIVE INSTRUMENTS AND HEDGING ACTIVITIES - Offsetting Financial Liabilities and Derivative Liabilities (Details) - Interest rate swaps - USD ($) $ in Thousands	Mar. 31, 2017	Dec. 31, 2016
Offsetting of Financial Liabilities and Derivative Liabilities
Gross amounts of recognized liabilities	$ (16,698)	$ (24,484)
Gross amounts offset in the Statements of Condition	5,166	4,712
Net amounts of liabilities presented in the Statements of Condition	(11,532)	(19,772)
Gross amounts not offset in the Statements of Condition, financial instruments	6,576	14,738
Gross amounts not offset in the Statements of Condition, cash collateral pledged	0	650
Net amount	(4,956)	(4,384)
Institutional counterparties
Offsetting of Financial Liabilities and Derivative Liabilities
Gross amounts of recognized liabilities	(11,740)	(20,077)
Gross amounts offset in the Statements of Condition	5,164	4,689
Net amounts of liabilities presented in the Statements of Condition	(6,576)	(15,388)
Gross amounts not offset in the Statements of Condition, financial instruments	6,576	14,738
Gross amounts not offset in the Statements of Condition, cash collateral pledged	0	650
Net amount	0	0
Commercial counterparties
Offsetting of Financial Liabilities and Derivative Liabilities
Gross amounts of recognized liabilities	(4,958)	(4,407)
Gross amounts offset in the Statements of Condition	2	23
Net amounts of liabilities presented in the Statements of Condition	(4,956)	(4,384)
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	$ (4,956)	$ (4,384)

FAIR VALUE MEASUREMENTS - Measu

FAIR VALUE MEASUREMENTS - Measured on Recurring Basis (Details) - USD ($) $ in Thousands	Mar. 31, 2017	Dec. 31, 2016
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading security, at fair value	$ 12,966	$ 13,229
Securities available for sale, at fair value	1,293,683	1,209,537
Other assets	91,119	98,457
Total Fair Value
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading security, at fair value	12,966	13,229
Securities available for sale, at fair value	1,293,683	1,209,537
Loans held for sale	89,741	120,673
Derivative assets	22,958	21,617
Derivative liabilities	17,896	24,420
Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading security, at fair value	0	0
Securities available for sale, at fair value	43,008	62,284
Loans held for sale	0	0
Derivative assets	0	622
Derivative liabilities	1,229	0
Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading security, at fair value	0	0
Securities available for sale, at fair value	1,250,675	1,147,253
Loans held for sale	89,741	120,673
Derivative assets	14,897	16,157
Derivative liabilities	16,645	24,420
Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading security, at fair value	12,966	13,229
Securities available for sale, at fair value	0	0
Loans held for sale	0	0
Derivative assets	8,061	4,838
Derivative liabilities	22	0
Recurring | Total Fair Value
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading security, at fair value	12,966	13,229
Loans held for sale	89,741	120,673
Derivative assets	22,958	21,617
Other assets	976	798
Derivative liabilities	17,896	24,420
Recurring | Total Fair Value | Debt securities | Municipal bonds and obligations
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale, at fair value	120,591	119,816
Recurring | Total Fair Value | Debt securities | Agency collateralized mortgage obligations
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale, at fair value	752,077	651,911
Recurring | Total Fair Value | Debt securities | Agency mortgage-backed securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale, at fair value	231,151	228,684
Recurring | Total Fair Value | Debt securities | Agency commercial mortgage-backed securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale, at fair value	63,377	64,534
Recurring | Total Fair Value | Debt securities | Corporate bonds
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale, at fair value	60,496	56,006
Recurring | Total Fair Value | Debt securities | Trust preferred securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale, at fair value	11,788	11,887
Recurring | Total Fair Value | Debt securities | Other bonds and obligations
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale, at fair value	10,862	11,158
Recurring | Total Fair Value | Marketable equity securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale, at fair value	43,341	65,541
Recurring | Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading security, at fair value	0	0
Loans held for sale	0	0
Derivative assets	0	622
Other assets	0	0
Derivative liabilities	1,229	0
Recurring | Level 1 | Debt securities | Municipal bonds and obligations
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale, at fair value	0	0
Recurring | Level 1 | Debt securities | Agency collateralized mortgage obligations
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale, at fair value	0	0
Recurring | Level 1 | Debt securities | Agency mortgage-backed securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale, at fair value	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]
Securities available for sale, at fair value	0	0
Recurring | Level 1 | Debt securities | Corporate bonds
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale, at fair value	0	0
Recurring | Level 1 | Debt securities | Trust preferred securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale, at fair value	0	0
Recurring | Level 1 | Debt securities | Other bonds and obligations
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale, at fair value	0	0
Recurring | Level 1 | Marketable equity securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale, at fair value	43,008	62,284
Recurring | Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading security, at fair value	0	0
Loans held for sale	89,741	120,673
Derivative assets	14,897	16,157
Other assets	0	0
Derivative liabilities	16,645	24,420
Recurring | Level 2 | Debt securities | Municipal bonds and obligations
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale, at fair value	120,591	119,816
Recurring | Level 2 | Debt securities | Agency collateralized mortgage obligations
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale, at fair value	752,077	651,911
Recurring | Level 2 | Debt securities | Agency mortgage-backed securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale, at fair value	231,151	228,684
Recurring | Level 2 | Debt securities | Agency commercial mortgage-backed securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale, at fair value	63,377	64,534
Recurring | Level 2 | Debt securities | Corporate bonds
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale, at fair value	60,496	56,006
Recurring | Level 2 | Debt securities | Trust preferred securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale, at fair value	11,788	11,887
Recurring | Level 2 | Debt securities | Other bonds and obligations
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale, at fair value	10,862	11,158
Recurring | Level 2 | Marketable equity securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale, at fair value	333	3,257
Recurring | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading security, at fair value	12,966	13,229
Loans held for sale	0	0
Derivative assets	8,061	4,838
Other assets	976	798
Derivative liabilities	22	0
Recurring | Level 3 | Debt securities | Municipal bonds and obligations
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale, at fair value	0	0
Recurring | Level 3 | Debt securities | Agency collateralized mortgage obligations
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale, at fair value	0	0
Recurring | Level 3 | Debt securities | Agency mortgage-backed securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale, at fair value	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]
Securities available for sale, at fair value	0	0
Recurring | Level 3 | Debt securities | Corporate bonds
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale, at fair value	0	0
Recurring | Level 3 | Debt securities | Trust preferred securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale, at fair value	0	0
Recurring | Level 3 | Debt securities | Other bonds and obligations
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale, at fair value	0	0
Recurring | Level 3 | Marketable equity securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale, at fair value	$ 0	$ 0

FAIR VALUE MEASUREMENTS - Narra

FAIR VALUE MEASUREMENTS - Narrative (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2017USD ($)security	Mar. 31, 2016USD ($)transfer
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Transfers out of Level 3, number of transfers | transfer		1
Transfers to Level 2		$ 708
Junior subordinated debentures re-price period (in days)	90 days
Loans Held for Sale
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Gains (losses) in fair value of loans held for sale included in earnings	$ 593	$ 215
Trading Security
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Number of securities in the portfolio (security) | security	1

FAIR VALUE MEASUREMENTS - Loans

FAIR VALUE MEASUREMENTS - Loans Held for Sale (Details) - Level 2 - USD ($) $ in Thousands	Mar. 31, 2017	Dec. 31, 2016
Loans Held for Sale
Aggregate Fair Value	$ 89,741	$ 120,673
Aggregate Unpaid Principal	322	322
Recurring
Loans Held for Sale
Aggregate Fair Value	89,741	120,673
Recurring | Loans Held for Sale
Loans Held for Sale
Aggregate Fair Value	89,741	120,673
Aggregate Unpaid Principal	86,653	118,178
Aggregate Fair Value Less Aggregate Unpaid Principal	$ 3,088	$ 2,495

FAIR VALUE MEASUREMENTS - Chang

FAIR VALUE MEASUREMENTS - Changes in Level 3 (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Changes in Level 3 assets that were measured at fair value on a recurring basis
Transfers to Level 2		$ (708)
Commitments to Lend
Derivative Asset (Liability)
Beginning balance	$ 4,738
Unrealized (loss) gain, net recognized in other non-interest income	17,302
Transfers to held for sale loans	(13,979)
Ending balance	8,061
Unrealized gains (losses) relating to instruments still held at end of period	8,061
Interest Rate Lock Commitments
Derivative Asset (Liability)
Beginning balance		323
Unrealized (loss) gain, net recognized in other non-interest income		1,206
Transfers to held for sale loans		(727)
Ending balance		802
Unrealized gains (losses) relating to instruments still held at end of period		802
Forward Commitments
Derivative Asset (Liability)
Beginning balance	100	9
Unrealized (loss) gain, net recognized in other non-interest income	(122)	(152)
Ending balance	(22)	(143)
Unrealized gains (losses) relating to instruments still held at end of period	(22)	(143)
Trading Security
Changes in Level 3 assets that were measured at fair value on a recurring basis
Balance at the beginning of the period	13,229	14,189
Unrealized (loss) gain, net recognized in other non-interest income	(106)	433
Paydown of trading security	(157)	(148)
Balance at the end of the period	12,966	14,474
Unrealized gains (losses) relating to instruments still held at the end of the period	1,736	2,637
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
Balance at the end of the period		0
Unrealized gains (losses) relating to instruments still held at the end of the period	0	$ 0
Capitalized servicing rights
Changes in Level 3 assets that were measured at fair value on a recurring basis
Balance at the beginning of the period	798
Unrealized (loss) gain, net recognized in other non-interest income	(2)
Additions to servicing rights	180
Balance at the end of the period	$ 976

FAIR VALUE MEASUREMENTS - Unobs

FAIR VALUE MEASUREMENTS - Unobservable Inputs Recurring (Details) - USD ($)	3 Months Ended	12 Months Ended
	Mar. 31, 2017	Dec. 31, 2016
Quantitative information about the significant unobservable inputs within Level 3
Derivative asset	$ 5,061,000	$ (2,804,000)
Level 3 | Recurring
Quantitative information about the significant unobservable inputs within Level 3
Total	22,025,000	18,865,000
Level 3 | Recurring | Trading Security
Quantitative information about the significant unobservable inputs within Level 3
Assets measured on recurring basis	$ 12,966,000	$ 13,229,000
Level 3 | Recurring | Trading Security | Discounted Cash Flow
Quantitative information about the significant unobservable inputs within Level 3
Discount Rate (as percent)	2.68%	2.62%
Level 3 | Recurring | Forward Commitments
Quantitative information about the significant unobservable inputs within Level 3
Derivative asset	$ 8,061,000	$ 100,000
Level 3 | Recurring | Forward Commitments | Historical Trend
Quantitative information about the significant unobservable inputs within Level 3
Closing Ratio (as percent)	79.68%	80.36%
Level 3 | Recurring | Forward Commitments | Pricing Model
Quantitative information about the significant unobservable inputs within Level 3
Origination Costs, per loan	$ 3,692	$ 3,692
Level 3 | Recurring | Commitments to Lend
Quantitative information about the significant unobservable inputs within Level 3
Assets measured on recurring basis	$ 22,000	$ 4,738,000
Level 3 | Recurring | Commitments to Lend | Historical Trend
Quantitative information about the significant unobservable inputs within Level 3
Closing Ratio (as percent)	79.68%	80.36%
Level 3 | Recurring | Commitments to Lend | Pricing Model
Quantitative information about the significant unobservable inputs within Level 3
Origination Costs, per loan	$ 3,692	$ 3,692
Level 3 | Recurring | Capitalized servicing rights
Quantitative information about the significant unobservable inputs within Level 3
Assets measured on recurring basis	$ 976,000	$ 798,000
Level 3 | Recurring | Capitalized servicing rights | Discounted Cash Flow
Quantitative information about the significant unobservable inputs within Level 3
Discount Rate (as percent)	11.00%	11.00%
Constant prepayment rate (CPR) (as percent)	10.30%	10.40%

FAIR VALUE MEASUREMENTS - Mea76

FAIR VALUE MEASUREMENTS - Measured on Non-recurring Basis (Details) - USD ($) $ in Thousands	Mar. 31, 2017	Dec. 31, 2016
Quantitative information about the significant unobservable inputs within Level 3
Other real estate owned	$ 71	$ 151
Non-recurring | Level 3
Quantitative information about the significant unobservable inputs within Level 3
Impaired loans	18,968	17,761
Capitalized servicing rights	11,766	10,726
Other real estate owned	71	151
Total	$ 30,805	$ 28,638

FAIR VALUE MEASUREMENTS - Uno77

FAIR VALUE MEASUREMENTS - Unobservable Inputs Non-recurring (Details) - USD ($)	3 Months Ended	12 Months Ended
	Mar. 31, 2017	Dec. 31, 2016
Quantitative information about the significant unobservable inputs within Level 3
Other real estate owned	$ 71,000	$ 151,000
Non-recurring | Level 3
Quantitative information about the significant unobservable inputs within Level 3
Impaired loans	18,968,000	17,761,000
Capitalized servicing rights	11,766,000	10,726,000
Other real estate owned	71,000	151,000
Total	30,805,000	28,638,000
Non-recurring | Impaired loans | Appraised value of collateral | Level 3
Quantitative information about the significant unobservable inputs within Level 3
Impaired loans	$ 18,968,000	$ 17,761,000
Non-recurring | Impaired loans | Minimum | Appraised value of collateral | Level 3
Quantitative information about the significant unobservable inputs within Level 3
Loss severity (as percent)	0.24%	0.00%
Appraised value	$ 22,700	$ 0
Non-recurring | Impaired loans | Maximum | Appraised value of collateral | Level 3
Quantitative information about the significant unobservable inputs within Level 3
Loss severity (as percent)	19.09%	88.70%
Appraised value	$ 2,221,200	$ 2,192,000
Non-recurring | Impaired loans | Weighted Average | Appraised value of collateral | Level 3
Quantitative information about the significant unobservable inputs within Level 3
Loss severity (as percent)	3.61%	9.73%
Appraised value	$ 1,017,600	$ 1,026,000
Non-recurring | Capitalized servicing rights | Discounted Cash Flow | Level 3
Quantitative information about the significant unobservable inputs within Level 3
Capitalized servicing rights	$ 11,766,000	$ 10,726,000
Non-recurring | Capitalized servicing rights | Minimum | Discounted Cash Flow | Level 3
Quantitative information about the significant unobservable inputs within Level 3
Constant prepayment rate (CPR) (as percent)	7.33%	7.35%
Discount Rate (as percent)	10.00%	10.00%
Non-recurring | Capitalized servicing rights | Maximum | Discounted Cash Flow | Level 3
Quantitative information about the significant unobservable inputs within Level 3
Constant prepayment rate (CPR) (as percent)	13.12%	14.28%
Discount Rate (as percent)	12.50%	14.00%
Non-recurring | Capitalized servicing rights | Weighted Average | Discounted Cash Flow | Level 3
Quantitative information about the significant unobservable inputs within Level 3
Constant prepayment rate (CPR) (as percent)	9.90%	10.44%
Discount Rate (as percent)	11.17%	11.77%
Non-recurring | Other real estate owned | Appraised value of collateral | Level 3
Quantitative information about the significant unobservable inputs within Level 3
Other real estate owned	$ 71,000	$ 151,000
Non-recurring | Other real estate owned | Minimum | Appraised value of collateral | Level 3
Quantitative information about the significant unobservable inputs within Level 3
Appraised value	94,000	101,000
Non-recurring | Other real estate owned | Maximum | Appraised value of collateral | Level 3
Quantitative information about the significant unobservable inputs within Level 3
Appraised value	175,000	129,000
Non-recurring | Other real estate owned | Weighted Average | Appraised value of collateral | Level 3
Quantitative information about the significant unobservable inputs within Level 3
Appraised value	$ 134,900	$ 122,000

FAIR VALUE MEASUREMENTS - Fair

FAIR VALUE MEASUREMENTS - Fair Values and Carrying Amounts (Details) - USD ($) $ in Thousands	Mar. 31, 2017	Dec. 31, 2016
Financial Assets
Trading security, at fair value	$ 12,966	$ 13,229
Securities available for sale	1,293,683	1,209,537
Securities held to maturity	334,866	337,680
FHLB bank stock and restricted securities	76,407	71,112
Level 1
Financial Assets
Cash and cash equivalents	93,343	113,075
Trading security, at fair value	0	0
Securities available for sale	43,008	62,284
Securities held to maturity	0	0
FHLB bank stock and restricted 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	0	622
Assets held for sale	0	0
Financial Liabilities
Total deposits	0	0
Short-term debt	0	0
Long-term Federal Home Loan Bank advances	0	0
Subordinated borrowings	0	0
Derivative liabilities	1,229	0
Level 2
Financial Assets
Cash and cash equivalents	0	0
Trading security, at fair value	0	0
Securities available for sale	1,250,675	1,147,253
Securities held to maturity	299,751	300,806
FHLB bank stock and restricted securities	76,407	71,112
Net loans	0	0
Loans held for sale	89,741	120,673
Accrued interest receivable	27,599	26,113
Cash surrender value of bank-owned life insurance policies	139,914	139,257
Derivative assets	14,897	16,157
Assets held for sale	322	322
Financial Liabilities
Total deposits	6,659,280	6,624,108
Short-term debt	1,136,621	1,081,996
Long-term Federal Home Loan Bank advances	157,884	143,151
Subordinated borrowings	97,623	96,973
Derivative liabilities	16,645	24,420
Level 3
Financial Assets
Cash and cash equivalents	0	0
Trading security, at fair value	12,966	13,229
Securities available for sale	0	0
Securities held to maturity	35,115	36,874
FHLB bank stock and restricted securities	0	0
Net loans	6,642,677	6,532,745
Loans held for sale	0	0
Accrued interest receivable	0	0
Cash surrender value of bank-owned life insurance policies	0	0
Derivative assets	8,061	4,838
Assets held for sale	0	0
Financial Liabilities
Total deposits	0	0
Short-term debt	0	0
Long-term Federal Home Loan Bank advances	0	0
Subordinated borrowings	0	0
Derivative liabilities	22	0
Carrying Amount
Financial Assets
Cash and cash equivalents	93,343	113,075
Trading security, at fair value	12,966	13,229
Securities available for sale	1,293,683	1,209,537
Securities held to maturity	331,179	334,368
FHLB bank stock and restricted securities	76,407	71,112
Net loans	6,610,129	6,505,789
Loans held for sale	89,741	120,673
Accrued interest receivable	27,599	26,113
Cash surrender value of bank-owned life insurance policies	139,914	139,257
Derivative assets	22,958	21,617
Assets held for sale	322	322
Financial Liabilities
Total deposits	6,656,054	6,622,092
Short-term debt	1,136,801	1,082,044
Long-term Federal Home Loan Bank advances	157,920	142,792
Subordinated borrowings	89,206	89,161
Derivative liabilities	17,896	24,420
Total Fair Value
Financial Assets
Cash and cash equivalents	93,343	113,075
Trading security, at fair value	12,966	13,229
Securities available for sale	1,293,683	1,209,537
Securities held to maturity	334,866	337,680
FHLB bank stock and restricted securities	76,407	71,112
Net loans	6,642,677	6,532,745
Loans held for sale	89,741	120,673
Accrued interest receivable	27,599	26,113
Cash surrender value of bank-owned life insurance policies	139,914	139,257
Derivative assets	22,958	21,617
Assets held for sale	322	322
Financial Liabilities
Total deposits	6,659,280	6,624,108
Short-term debt	1,136,621	1,081,996
Long-term Federal Home Loan Bank advances	157,884	143,151
Subordinated borrowings	97,623	96,973
Derivative liabilities	$ 17,896	$ 24,420

NET INTEREST INCOME AFTER PRO79

NET INTEREST INCOME AFTER PROVISION FOR LOAN LOSSES (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Banking and Thrift, Interest [Abstract]
Net interest income	$ 66,886	$ 57,697
Provision for loan losses	5,095	4,006
Net interest income after provision for loan losses	$ 61,791	$ 53,691