Independent Bank (INDB) 10-K 25 Feb 16 2015 FY Annual report Financial data

Document and Entity Information

Document and Entity Information - USD ($)	12 Months Ended
	Dec. 31, 2015	Feb. 19, 2016
Document and Entity Information [Abstract]
Entity Registrant Name	Independent Bank Corp
Entity Central Index Key	776,901
Document Type	10-K
Document Period End Date	Dec. 31, 2015
Amendment Flag	false
Document Fiscal Year Focus	2,015
Document Fiscal Period Focus	FY
Current Fiscal Year End Date	--12-31
Entity Well-known Seasoned Issuer	Yes
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Filer Category	Large Accelerated Filer
Entity Public Float	$ 1,185,334,420
Entity Common Stock, Shares Outstanding		26,294,556

Consolidated Balance Sheets

Consolidated Balance Sheets - USD ($)	Dec. 31, 2015	Dec. 31, 2014
Assets
Cash and due from banks	$ 84,813,000	$ 143,342,000
Interest-earning deposits with banks	190,952,000	34,912,000
Securities
Trading Securities	356,000	0
Securities - available for sale	367,249,000	348,554,000
Securities - held to maturity (fair value $478,749 and $379,699)	477,507,000	375,453,000
Total securities	845,112,000	724,007,000
Loans held for sale (at fair value)	5,990,000	6,888,000
Loans
Commercial and industrial	843,276,000	860,839,000
Commercial real estate	2,653,434,000	2,347,323,000
Commercial construction	373,368,000	265,994,000
Small business	96,246,000	85,247,000
Residential real estate	638,606,000	530,259,000
Loans and Leases Receivable Consumer Home Equity in First Position	543,092,000	513,518,000
Loans and Leases Receivable Consumer Home Equity in Subordinate Position	384,711,000	350,345,000
Other consumer	14,988,000	17,208,000
Total loans	5,547,721,000	4,970,733,000
Less: allowance for loan losses	(55,825,000)	(55,100,000)
Net loans	5,491,896,000	4,915,633,000
Federal Home Loan Bank stock	14,431,000	33,233,000
Bank premises and equipment, net	75,663,000	64,074,000
Goodwill	201,083,000	170,421,000
Other intangible assets	11,826,000	9,885,000
Cash surrender value of life insurance policies	134,627,000	109,854,000
Other real estate owned and other foreclosed assets	2,159,000	7,743,000
Other assets	151,486,000	144,920,000
Total assets	7,210,038,000	6,364,912,000
Deposits
Demand deposits	1,846,593,000	1,462,200,000
Savings and interest checking accounts	2,370,141,000	2,108,486,000
Money market	1,089,139,000	990,160,000
Time certificates of deposit of $100,000 and over	274,701,000	254,718,000
Other time certificates of deposits	410,129,000	394,902,000
Total deposits	5,990,703,000	5,210,466,000
Borrowings
Advances from Federal Home Loan Banks	102,080,000	70,080,000
Customer Repurchase Agreements and other short-term borrowings	133,958,000	147,890,000
Wholesale repurchase agreements	0	50,000,000
Junior subordinated debentures	73,464,000	73,685,000
Subordinated debentures	35,000,000	65,000,000
Total borrowings	344,502,000	406,655,000
Other liabilities	103,370,000	107,264,000
Total liabilities	$ 6,438,575,000	$ 5,724,385,000
Commitments and contingencies
Stockholders' Equity
Preferred stock, $.01 par value. authorized: 1,000,000 shares, outstanding: none	$ 0	$ 0
Common stock, $.01 par value. authorized: 75,000,000 shares, issued and outstanding: 26,236,352 shares at December 31, 2015 and 23,998,738 shares at December 31, 2014 (includes 230,900 and 254,500 shares of unvested participating restricted stock awards, respectively)	260,000	237,000
Shares held in rabbi trust at cost: 173,378 shares at December 31, 2015 and 176,849 shares at December 31, 2014	3,958,000	3,666,000
Deferred compensation obligation	3,958,000	3,666,000
Additional paid in capital	405,486,000	311,978,000
Retained earnings	368,169,000	330,444,000
Accumulated other comprehensive loss, net of tax	(2,452,000)	(2,132,000)
Total stockholders' equity	771,463,000	640,527,000
Liabilities and Equity	$ 7,210,038,000	$ 6,364,912,000

Consolidated Balance Sheets (Pa

Consolidated Balance Sheets (Parenthetical) - USD ($)	Dec. 31, 2015	Dec. 31, 2014
Time certificates of deposit least amount	$ 100,000	$ 100,000
Securities held to maturity, fair value	$ 478,749,000	$ 379,699,000
Preferred stock, par value	$ 0.01	$ 0.01
Preferred stock, shares authorized	1,000,000	1,000,000
Preferred stock, shares outstanding	0	0
Common stock, par value	$ 0.01	$ 0.01
Common stock, shares authorized	75,000,000	75,000,000
Common stock, shares issued	26,236,352	23,998,738
Common stock, unvested restricted Stock awards	230,900	254,500
Shares held in rabbit trust at cost	173,378	176,849
Common Stock Outstanding
Common stock, shares outstanding	26,236,352	23,998,738

Consolidated Statements of Inco

Consolidated Statements of Income - USD ($)	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Interest income
Interest and fees on loans	$ 214,724,000	$ 197,021,000	$ 189,748,000
Taxable interest and dividends on securities	20,120,000	18,610,000	15,137,000
Nontaxable interest and dividends on securities	127,000	144,000	55,000
Interest on loans held for sale	225,000	405,000	774,000
Interest on federal funds sold and short-term investments	349,000	279,000	200,000
Total interest and dividend income	235,545,000	216,459,000	205,914,000
Interest expense
Interest on deposits	11,576,000	11,039,000	10,624,000
Interest on borrowings	9,041,000	9,378,000	12,712,000
Total interest expense	20,617,000	20,417,000	23,336,000
Net interest income	214,928,000	196,042,000	182,578,000
Provision (benefit)	1,500,000	10,403,000	10,200,000
Net interest income after provision for loan losses	213,428,000	185,639,000	172,378,000
Noninterest income
Deposit account fees	18,078,000	18,065,000	17,940,000
Interchange and ATM fees	14,728,000	12,975,000	10,883,000
Investment management	20,735,000	19,642,000	16,832,000
Fees and Commission Mortgage Banking	5,163,000	3,384,000	6,734,000
Increase in cash surrender value of life insurance policies	3,692,000	3,128,000	3,229,000
Gain on life insurance benefits	0	1,964,000	227,000
Gains (Losses) on Extinguishment of Debt	0	0	763,000
Available-For-Sale Securities - Fixed Income Gross Realized Gains	798,000	121,000	258,000
Gain (Loss) on Sale of Equity Investments	20,000	91,000	(28,000)
Loan level derivative income	3,830,000	2,477,000	3,439,000
Other noninterest income	8,844,000	8,096,000	7,732,000
Total noninterest income	75,888,000	69,943,000	68,009,000
Noninterest expenses
Salaries and employee benefits	105,068,000	94,044,000	89,894,000
Occupancy and equipment expenses	23,020,000	21,820,000	19,650,000
Data processing & facilities management	4,631,000	4,765,000	4,748,000
FDIC assessment	3,979,000	3,770,000	3,579,000
Advertising expense	4,645,000	3,859,000	4,280,000
Consulting expense	3,680,000	2,923,000	3,322,000
Debit Card	2,456,000	2,362,000	2,994,000
Available-for-Sale Securities - Fixed Income Gross Realized Losses	1,124,000	21,000	0
Available-For-Sale Securities - Equity Gross Realized Losses	99,000	0	0
Merger and acquisition expense	10,501,000	1,339,000	8,685,000
Other noninterest expenses	37,935,000	36,935,000	36,497,000
Total noninterest expenses	197,138,000	171,838,000	173,649,000
Income before income taxes	92,178,000	83,744,000	66,738,000
Provision for income taxes	27,218,000	23,899,000	16,484,000
Net Income	$ 64,960,000	$ 59,845,000	$ 50,254,000
Basic earnings per share (in dollars per share)	$ 2.51	$ 2.50	$ 2.18
Diluted earnings per share (in dollars per share)	$ 2.50	$ 2.49	$ 2.18
Weighted average common shares (basic) (in shares)	25,891,382	23,899,562	23,011,814
Common share equivalents (in shares)	68,566	93,815	76,764
Weighted average common shares (diluted) (in shares)	25,959,948	23,993,377	23,088,578
Cash dividends declared (in dollars per share)	$ 1.04	$ 0.96	$ 0.88

Consolidated Statements of Comp

Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Statement of Comprehensive Income [Abstract]
Net income	$ 64,960	$ 59,845	$ 50,254
Other comprehensive income (loss), net of tax
Net change in fair value of securities available for sale	(2,083)	5,412	(7,501)
Net change in fair value of cash flow hedges	1,199	2,256	3,735
Net change in other comprehensive income for defined benefit postretirement plans	564	(2,366)	858
Total other comprehensive income (loss)	(320)	5,302	(2,908)
Total comprehensive income	$ 64,640	$ 65,147	$ 47,346

Consolidated Statements of Stoc

Consolidated Statements of Stockholders' Equity - USD ($) $ in Thousands	Total	Common Stock Outstanding	Common Stock	Value of Shares Held in Rabbi Trust at Cost	Deferred Compensation Obligation	Additional Paid in Capital	Retained Earnings	Accumulated Other Comprehensive Loss
Beginning balance at Dec. 31, 2012	$ 529,320		$ 225	$ (3,179)	$ 3,179	$ 269,950	$ 263,671	$ (4,526)
Beginning balance (in shares) at Dec. 31, 2012		22,774,009
Net income	50,254						50,254
Other comprehensive loss	(2,908)							(2,908)
Common dividend declared	(20,365)						(20,365)
Common stock issued for acquisition	29,390		8			29,382
Common stock issued for acquisition (in shares)		818,650
Proceeds from exercise of stock options	2,475		1			2,474
Proceeds from exercise of stock options (in shares)		98,807
Tax benefit related to equity award activity	503					503
Stock based compensation	2,462					2,462
Restricted stock awards issued, net of awards surrendered (in shares)		86,331
Restricted stock awards issued, net of awards surrendered	(669)		1			(670)
Stock Issued During Period, Shares, Other		28,187
Stock Issued During Period, Value, Other	969					969
Increase (Decrease) in Deferred Compensation				(225)	225
Tax benefit related to deferred compensation distributions	109					109
Ending balance (in shares) at Dec. 31, 2013		23,805,984
Ending balance at Dec. 31, 2013	591,540		235	(3,404)	3,404	305,179	293,560	(7,434)
Net income	59,845						59,845
Other comprehensive loss	5,302							5,302
Common dividend declared	(22,961)						(22,961)
Common stock issued for acquisition	0
Proceeds from exercise of stock options	2,333		1			2,332
Proceeds from exercise of stock options (in shares)		91,171
Tax benefit related to equity award activity	704					704
Stock based compensation	2,712					2,712
Restricted stock awards issued, net of awards surrendered (in shares)		59,675
Restricted stock awards issued, net of awards surrendered	(641)		1			(642)
Stock Issued During Period, Shares, Other		41,908
Stock Issued During Period, Value, Other	1,555					1,555
Increase (Decrease) in Deferred Compensation	0			(262)	262
Tax benefit related to deferred compensation distributions	138					138
Ending balance (in shares) at Dec. 31, 2014		23,998,738
Ending balance at Dec. 31, 2014	640,527		237	(3,666)	3,666	311,978	330,444	(2,132)
Net income	64,960						64,960
Other comprehensive loss	(320)							(320)
Common dividend declared	(27,235)						(27,235)
Common stock issued for acquisition	86,415		21			86,394
Common stock issued for acquisition (in shares)		2,052,137
Proceeds from exercise of stock options	1,367		1			1,366
Proceeds from exercise of stock options (in shares)		100,794
Tax benefit related to equity award activity	1,042					1,042
Stock based compensation	2,490					2,490
Restricted stock awards issued, net of awards surrendered (in shares)		23,851
Restricted stock awards issued, net of awards surrendered	(657)		1			(658)
Stock Issued During Period, Shares, Other		60,832
Stock Issued During Period, Value, Other	2,695					2,695
Increase (Decrease) in Deferred Compensation and Other Retirement Benefits				(292)	292
Tax benefit related to deferred compensation distributions	179					179
Ending balance (in shares) at Dec. 31, 2015		26,236,352
Ending balance at Dec. 31, 2015	$ 771,463		$ 260	$ (3,958)	$ 3,958	$ 405,486	$ 368,169	$ (2,452)

Consolidated Statements of Sto7

Consolidated Statements of Stockholders' Equity (Parenthetical) - $ / shares	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Cash dividends declared (in dollars per share)	$ 1.04	$ 0.96	$ 0.88
Retained Earnings
Cash dividends declared (in dollars per share)	$ 1.04	$ 0.96	$ 0.88

Consolidated Statements of Cash

Consolidated Statements of Cash Flows - USD ($)	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Cash flow from operating activities
Net income	$ 64,960,000	$ 59,845,000	$ 50,254,000
Adjustments to reconcile net income to net cash provided by operating activities
Depreciation and amortization	12,285,000	12,100,000	8,490,000
Provision for loan losses	1,500,000	10,403,000	10,200,000
Deferred income tax expense	10,220,000	2,840,000	2,557,000
Loss on write-down of investments in securities available for sale	405,000	(191,000)	(230,000)
Net loss on fixed assets	221,000	469,000	560,000
Gain on extinguishment of debt	0	0	(763,000)
Loss on termination of derivatives	0	1,122,000	0
Net loss on other real estate owned and foreclosed assets	1,152,000	723,000	606,000
Realized gain on sale leaseback transaction	(1,034,000)	(1,034,000)	(1,034,000)
Stock based compensation	2,490,000	2,712,000	2,462,000
Excess tax benefit related to equity award activity	(1,042,000)	(704,000)	(503,000)
Increase in cash surrender value of life insurance policies	(3,692,000)	(3,128,000)	(3,229,000)
Gain on life insurance benefits	0	(1,964,000)	(227,000)
Change in fair value on loans held for sale	22,000	(18,000)
Net change in:
Securities - trading	(356,000)	0	0
Loans held for sale	876,000	2,012,000	39,305,000
Other assets	3,812,000	(2,191,000)	48,903,000
Other liabilities	(2,276,000)	7,309,000	(16,016,000)
Total adjustments	24,583,000	30,460,000	91,081,000
Net cash provided by operating activities	89,543,000	90,305,000	141,335,000
Cash flows used in investing activities
Proceeds from sales of securities available for sale	14,199,000	5,438,000	3,506,000
Proceeds from maturities and principal repayments of securities available for sale	78,497,000	47,720,000	81,727,000
Purchases of securities available for sale	(73,064,000)	(37,047,000)	(47,975,000)
Proceeds from maturities and principal repayments of securities held to maturity	60,168,000	44,710,000	49,165,000
Purchases of securities held to maturity	(162,021,000)	(69,544,000)	(222,027,000)
Redemption of Federal Home Loan Bank stock	23,054,000	6,693,000	3,093,000
Investments in low income housing projects	(15,055,000)	(16,452,000)	0
Purchases of life insurance policies	(162,000)	(10,161,000)	(267,000)
Proceeds from life insurance policies	0	6,310,000	0
Net increase in loans	(114,550,000)	(266,961,000)	(84,264,000)
Cash provided by (used in) business combinations	(13,448,000)	0	10,520,000
Purchases of bank premises and equipment	(10,488,000)	(7,678,000)	(9,293,000)
Proceeds from the sale of bank premises and equipment	1,233,000	1,219,000	29,000
Payments on early termination of hedging relationship		(1,122,000)
Proceeds from the sale of other real estate owned and foreclosed assets	7,667,000	7,458,000	9,731,000
Net payments relating to other real estate owned and foreclosed assets	1,571,000	3,255,000	2,541,000
Net cash used in investing activities	(205,541,000)	(292,672,000)	(208,596,000)
Cash flows provided by financing activities
Net decrease in time deposits	(80,726,000)	(94,008,000)	(79,136,000)
Net increase in other deposits	428,713,000	318,056,000	300,000,000
Net repayments of short-term Federal Home Loan Bank borrowings	(10,000,000)	(65,000,000)	(50,000,000)
Repayments of long-term Federal Home Loan Bank borrowings	(9,000,000)	(5,000,000)	(79,946,000)
Net decrease in customer repurchase agreements	(13,932,000)	(1,398,000)	(4,071,000)
Increase (Decrease) in Payables under Repurchase Agreements	(50,000,000)	0	0
Net decrease in other short term borrowings		(5,000,000)	(7,000,000)
Repayments of Subordinated Debt	(30,000,000)	35,000,000	0
Net proceeds from exercise of stock options	1,367,000	2,333,000	2,475,000
Restricted stock awards issued, net of awards surrendered	(657,000)	(641,000)	(669,000)
Excess tax benefit from stock based compensation	1,042,000	704,000	503,000
Tax benefit from deferred compensation distribution	179,000	138,000	109,000
Proceeds from shares issued under the direct stock purchase plan	2,695,000	1,555,000	969,000
Common dividends paid	(26,172,000)	(22,443,000)	(15,122,000)
Net cash provided by financing activities	213,509,000	164,296,000	68,112,000
Net increase (decrease) in cash and cash equivalents	97,511,000	(38,071,000)	851,000
Cash and cash equivalents at beginning of year	178,254,000	216,325,000	215,474,000
Cash and cash equivalents at end of period	275,765,000	178,254,000	216,325,000
Supplemental schedule of noncash investing and financing activities
Interest on deposits and borrowings	20,773,000	20,257,000	23,475,000
Income taxes	11,841,000	14,547,000	12,171,000
Transfer of loans to other real estate owned and foreclosed assets	1,522,000	5,248,000	2,869,000
Real Estate Owned, Transfer to Real Estate Owned	142,000
Capital commitment relating to Low Income Housing Project investments, noncash	1,658,000	38,839,000	51,000
In conjunction with the purchase acquisition detailed in note 2 to the consolidated financial statements, assets were acquired and liabilities were assumed as follows
Common stock issued for acquisition	86,415,000	$ 0	29,390,000
Fair value of assets acquired, net of cash acquired	598,376,000		241,395,000
Fair value of liabilities assumed	$ 498,513,000		$ 222,525,000

SUMMARY OF SIGNIFICANT ACCOUNTI

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES	12 Months Ended
	Dec. 31, 2015
Accounting Policies [Abstract]
Significant Accounting Policies [Text Block]	SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES Nature of Operations Independent Bank Corp. (the "Company”) is a bank holding company whose principal subsidiary is Rockland Trust Company (“Rockland Trust” or the “Bank”). Rockland Trust is a state-chartered commercial bank, which operates 82 full service and three limited service retail branches, eleven commercial banking centers, five investment management offices and one mortgage lending center, all of which are located in Eastern Massachusetts, including Cape Cod, with the exception of an investment management group/commercial lending office located in Providence, Rhode Island. Rockland Trust deposits are insured by the Federal Deposit Insurance Corporation, subject to regulatory limits. The Company’s primary source of income is from providing loans to individuals and small-to-medium sized businesses in its market area. Rockland Trust is a community-oriented commercial bank, and the community banking business is the Company's only reportable operating segment. Principles of Consolidation The consolidated financial statements include the accounts of the Company, the Bank and other wholly-owned subsidiaries, except subsidiaries that are not deemed necessary to be consolidated. All significant intercompany balances and transactions have been eliminated in consolidation. The Company determines whether it has a controlling financial interest in an entity by first evaluating whether the entity is a voting interest entity or a variable interest entity under GAAP. Voting interest entities are entities in which the total equity investment at risk is sufficient to enable the entity to finance itself independently and provides the equity holders with the obligation to absorb losses, the right to receive residual returns and the right to make decisions about the entity’s activities. The Company would consolidate voting interest entities in which it has all, or at least a majority of, the voting interest. As defined in applicable accounting standards, variable interest entities (“VIEs”) are entities that lack one or more of the characteristics of a voting interest entity. A controlling financial interest in a VIE is present when the Company has both the power and ability to direct the activities of the VIE that most significantly impact the VIE's economic performance and an obligation to absorb losses or the right to receive benefits that could potentially be significant to the VIE. The Company also owns the common stock of various trusts which have issued trust preferred securities. These trusts are VIEs in which the Company is not the primary beneficiary and, therefore, are not consolidated. The trust's only assets are junior subordinated debentures issued by the Company, which were acquired by the trust using the proceeds from the issuance of the trust preferred securities and common stock. The junior subordinated debentures are included in long-term debt and the Company’s equity interest in the trust is included in other assets in the accompanying Consolidated Balance Sheets. Interest expense on the junior subordinated debentures is reported in interest expense on long-term debt in the accompanying Consolidated Statements of Income. Reclassification Certain previously reported amounts have been reclassified to conform to the current year’s presentation. Use of Estimates The preparation of financial statements in conformity with accounting principles generally accepted in the United States of America requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting periods. Actual results could vary from these estimates. Material estimates that are particularly susceptible to significant changes in the near-term relate to the determination of the allowance for loan losses, income taxes, valuation and potential impairment of investment securities, other-than-temporary impairment (“OTTI”) of certain investment securities, as well as valuation of goodwill and other intangibles and their respective analyses of impairment. Significant Concentrations of Credit Risk The vast majority of the Bank’s lending activities are conducted in the Commonwealth of Massachusetts and Rhode Island. The Bank originates commercial and industrial loans, commercial and residential real estate loans, including construction loans, small business loans, home equity loans, and other consumer loans for its portfolio. The Bank considers a concentration of credit to a particular industry to exist when the aggregate credit exposure which includes direct, indirect or contingent obligations to a borrower, an affiliated group of borrowers or a nonaffiliated group of borrowers engaged in one industry, exceeds 10% of the Bank’s loan portfolio. Loans originated by the Bank to lessors of nonresidential buildings represented 15.0% and 16.4% of the total loan portfolio as of December 31, 2015 and 2014 , respectively. Within this concentration category the Company believes it is well diversified among collateral property types and tenant industries. Cash and Cash Equivalents For purposes of reporting cash flows, cash and cash equivalents may include cash on hand, amounts due from banks, inclusive of interest-earning deposits held at banks, and federal funds sold. Generally, federal funds are sold for up to two week periods. Securities Investment securities are classified at the time of purchase as “available for sale,” “held to maturity,” or “trading.” Classification is constantly re-evaluated for consistency with corporate goals and objectives. Trading securities are recorded at fair value with subsequent changes in fair value recorded in earnings. Debt securities that management has the positive intent and ability to hold to maturity are classified as “held to maturity” and recorded at amortized cost. Securities not classified as held to maturity or trading, including equity securities with readily determinable fair values, are classified as “available for sale” and recorded at fair value, with changes in fair value excluded from earnings and reported in other comprehensive income, net of related tax. Purchase premiums and discounts are recognized in interest income, using the interest method, to arrive at periodic interest income at a constant effective yield, thereby reflecting the securities market yield. Gains and losses on the sale of securities are recorded on the trade date and are determined using the specific identification method. Declines in the fair value of held to maturity and available for sale securities below their amortized cost deemed to be OTTI are written down to fair value as determined by a cash flow analysis. To the extent the estimated cash flows do not support the amortized cost, the deficiency is considered to be due to credit loss and recognized in earnings. Unless the Company intends to sell the security, or if it is more likely than not that the Company will be required to sell the debt security before its anticipated recovery, the remainder of the OTTI charge is considered to be due to other factors, such as liquidity or interest rates, and thus is not recognized in earnings, but rather through other comprehensive income, net of related tax. The Company evaluates individual securities that have fair values below cost for six months or longer, or for a shorter period of time if considered appropriate by management, to determine if the decline in fair value is other-than-temporary. Consideration is given to the obligor of the security, whether the security is guaranteed, whether there is a projected adverse change in cash flows, the liquidity of the security, the type of security, the capital position of security issuers, and payment history of the security, amongst other factors when evaluating such securities. Loans Held for Sale The Bank primarily classifies new residential real estate mortgage loans as held for sale based on intent, which is determined when loans are underwritten. Residential real estate mortgage loans not designated as held for sale are retained based upon available liquidity, for interest rate risk management and other business purposes. The Company has elected the fair value option to account for originated closed loans intended for sale. Accordingly, changes in fair value relating to loans intended for sale are recorded in earnings and are offset by changes in fair value relating to interest rate lock commitments, forward sales commitments, and forward To Be Announced ("TBA") mortgage contracts. Gains and losses on residential loan sales (sales proceeds minus carrying amount) are recorded in mortgage banking income. Upfront costs and fees related to items for which the fair value option is elected shall be recognized in earnings as incurred and not deferred. Loans Loans are carried at the principal amounts outstanding, or amortized acquired fair value in the case of acquired loans, adjusted by partial charge-offs and net of deferred loan costs or fees. For originated loans, loan fees and certain direct origination costs are deferred and amortized into interest income over the expected term of the loan using the level-yield method. When a loan is paid off, the unamortized portion is recognized in interest income. Interest income on loans is accrued based upon the daily principal amount outstanding except for loans on nonaccrual status. For acquired loans which did not show signs of credit deterioration at acquisition, interest income is also accrued based upon the daily principal amount outstanding and is then further adjusted by the accretion of any discount or amortization of any premium associated with the loan. As a general rule, loans more than 90 days past due with respect to principal or interest are classified as nonaccrual loans, or sooner if management considers such action to be prudent. However, loans that are more than 90 days past due may be kept on an accruing status if the loan is well secured and/or in the process of collection. The Company may also put a junior lien mortgage on nonaccrual status as a result of delinquency with respect to the first position, which is held by another financial institution, while the junior lien is currently performing. Income accruals are suspended on all nonaccrual loans and all previously accrued and uncollected interest is reversed against current income. A loan remains on nonaccrual status until it becomes current with respect to principal and interest (and in certain instances remains current for up to six months), the loan is liquidated, or when the loan is determined to be uncollectible and is charged-off against the allowance for loan losses. When doubt exists as to the collectability of a loan, any payments received are applied to reduce the recorded investment in the asset to the extent necessary to eliminate such doubt. For all loan portfolios, a charge-off occurs when the Company determines that a specific loan, or portion thereof, is uncollectible. This determination is made based on management's review of specific facts and circumstances of the individual loan, including assessing the viability of the customer’s business or project as a going concern, the expected cash flows to repay the loan, the value of the collateral and the ability and willingness of any guarantors to perform. In cases where a borrower experiences financial difficulties and the Company makes certain concessionary modifications to contractual terms, the loan is classified as a troubled debt restructuring (“TDR”). Modifications may include adjustments to interest rates, extensions of maturity, consumer loans where the borrower's obligations have been effectively discharged through Chapter 7 Bankruptcy and the borrower has not reaffirmed the debt to the Bank, and other actions intended to minimize economic loss and avoid foreclosure or repossession of collateral. The recorded investment of loans classified as TDRs is adjusted to reflect the changes in value, if any, resulting from the granting of a concession. Nonaccrual loans that are restructured remain on nonaccrual for a period of six months to demonstrate that the borrower can meet the restructured terms. If the restructured loan is on accrual status prior to being modified, it is reviewed to determine if the modified loan should remain on accrual status. If the borrower’s ability to meet the revised payment schedule is not reasonably assured, the loan is classified as a nonaccrual loan. Loans classified as TDRs remain classified as such for the life of the loan, except in limited circumstances, when it is determined that the borrower is performing under the modified terms and the restructuring agreement specified an interest rate greater than or equal to an acceptable market rate for a comparable new loan at the time of the restructuring. Acquired loans All acquired loans are recorded at fair value with no carryover of the allowance for loan losses. At acquisition, loans are also reviewed to determine if the loan has evidence of deterioration in credit quality and to review if it is probable, at acquisition, that all contractually required payments will not be collected. Such loans are deemed to be purchased credit impaired ("PCI") loans. Under the accounting model for PCI loans, the excess of cash flows expected to be collected over the carrying amount of the loans, referred to as the "accretable yield", is accreted into interest income over the life of the loans using the effective yield method. Accordingly, PCI loans are not subject to classification as nonaccrual in the same manner as originated loans. Rather, acquired loans are generally considered to be accruing loans because their interest income relates to the accretable yield recognized and not to contractual interest payments at the loan level. The difference between contractually required principal and interest payments and the cash flows expected to be collected, referred to as the "nonaccretable difference", includes estimates of both the impact of prepayments and future credit losses expected to be incurred over the life of the loans. The estimate of cash flows expected to be collected is regularly re-assessed subsequent to acquisition. These re-assessments involve updates, as necessary, of the key assumptions and estimates used in the initial estimate of fair value. Generally speaking, expected cash flows are affected by: • Changes in the expected principal and interest payments over the estimated life - Changes in expected cash flows may be driven by the credit outlook and actions taken with borrowers. Changes in expected future cash flows resulting from loan modifications are included in the assessment of expected cash flows. • Change in prepayment assumptions - Prepayments affect the estimated life of the loans, which may change the amount of interest income expected to be collected. • Change in interest rate indices for variable rate loans - Expected future cash flows are based, as applicable, on the variable rates in effect at the time of the assessment of expected cash flows. A decrease in expected cash flows in subsequent periods may indicate that the loan is impaired which would likely require the recognition of a charge-off against the allowance for loan losses or an establishment of a specific reserve. An increase in expected cash flows in subsequent periods serves, first, to reduce any previously established specific reserve by the increase in the present value of cash flows expected to be collected. Any increase above the previously established specific reserve results in a recalculation of the amount of accretable yield for the loan. The adjustment of accretable yield due to an increase in expected cash flows is accounted for as a change in estimate. The additional cash flows expected to be collected are reclassified from the nonaccretable difference to the accretable yield, and the amount of periodic accretion is adjusted accordingly over the remaining life of the loans. A PCI loan may be resolved either through receipt of payment (in full or in part) from the borrower, the sale of the loan to a third party, or foreclosure of the collateral. In the event of a sale of the loan, a gain or loss on sale would be recognized and reported within noninterest income based on the difference between the sales proceeds and the carrying amount of the loan. For PCI loans accounted for on an individual loan basis and resolved directly with the borrower, any amount received from resolution in excess of the carrying amount of the loan is recognized and reported within interest income. A refinancing or modification of a PCI loan accounted for individually is assessed to determine whether the modification represents a TDR. If the loan is considered to be a TDR, it will be included in the total impaired loans reported by the Company. The loan will continue to recognize interest income based upon the excess of cash flows expected to be collected over the carrying amount of the loan. Allowance for Loan Losses The allowance for loan losses is established based upon the level of estimated probable losses in the current loan portfolio. Loan losses are charged against the allowance when management believes the collectability of a loan balance is doubtful. Subsequent recoveries, if any, are credited to the allowance. The allowance for loan losses is allocated to loan types using both a formula-based approach applied to groups of loans and an analysis of certain individual loans for impairment. The formula-based approach emphasizes loss factors derived from actual historical portfolio loss rates, which are combined with an assessment of certain qualitative factors to determine the allowance amounts allocated to the various loan categories. Allowance amounts are determined based on an estimate of the historical average annual percentage rate of loan loss for each loan category, an estimate of the incurred loss emergence and confirmation period for each loan category, and certain qualitative risk factors considered in the computation of the allowance for loan losses. The qualitative risk factors impacting the inherent risk of loss within the portfolio include the following: • National and local economic and business conditions • Level and trend of delinquencies • Level and trend of charge-offs and recoveries • Trends in volume and terms of loans • Risk selection, lending policy and underwriting standards • Experience and depth of management • Banking industry conditions and other external factors • Concentration risk The formula-based approach evaluates groups of loans with common characteristics, which consist of similar loan types with similar terms and conditions, to determine the appropriate allocation within each portfolio section. This approach incorporates qualitative adjustments based upon management’s assessment of various market and portfolio specific risk factors into its formula-based estimate. Due to the imprecise nature of the loan loss estimation process and ever changing conditions, the qualitative risk attributes may not adequately capture amounts of incurred loss in the formula-based loan loss components used to determine the Bank’s analysis of the adequacy of the allowance for loan losses. The Bank evaluates certain loans within the commercial and industrial, commercial real estate, commercial construction and small business portfolios individually for specific impairment. A loan is considered impaired when, based on current information and events, it is probable that the Bank will be unable to collect the scheduled payments of principal or interest when due according to the contractual terms of the loan agreement. Factors considered by management in determining impairment include payment status, collateral value, contractual interest rates and the probability of collecting scheduled principal and interest payments when due. Loans that experience insignificant payment delays and payment shortfalls generally are not classified as impaired. Loans are selected for evaluation based upon a change in internal risk rating, occurrence of delinquency, loan classification, troubled debt restructuring or nonaccrual status. A specific allowance amount is allocated to an individual loan when such loan has been deemed impaired and when the amount of the probable loss is able to be estimated. Estimates of loss may be determined by the present value of anticipated future cash flows, the loan’s observable fair market value, or the fair value of the collateral, if the loan is collateral dependent. However, for collateral dependent loans, the amount of the recorded investment in a loan that exceeds the fair value of the collateral less costs to sell is charged-off against the allowance for loan losses in lieu of an allocation of a specific allowance amount when such an amount has been identified definitively as uncollectible. Large groups of small-balance homogeneous loans such as the residential real estate, residential construction, home equity and other consumer portfolios are collectively evaluated for impairment. As such, the Bank does not typically identify individual loans within these groupings as impaired loans for impairment evaluation and disclosure. However, the Bank evaluates all TDRs for impairment on an individual loan basis regardless of loan type. In the ordinary course of business, the Bank enters into commitments to extend credit, commercial letters of credit, and standby letters of credit. Such financial instruments are recorded in the financial statements when they become payable. The credit risk associated with these commitments is evaluated in a manner similar to the allowance for loan losses. The reserve for unfunded lending commitments is included in other liabilities in the balance sheet. At December 31, 2015 and 2014 , the reserve for unfunded loan commitments was $1.4 million and $813,000 , respectively. Transfers and Servicing of Financial Assets Transfers of financial assets are accounted for as sales when control over the assets has been surrendered. Control over transferred assets is deemed to be surrendered when (1) the assets have been isolated from the Company, (2) the transferee obtains the right (free of conditions that constrain it from taking advantage of that right) to pledge or exchange the transferred assets, and (3) the Company does not maintain effective control over the transferred assets through an agreement to repurchase them before their maturity. Loans held for sale are generally sold with servicing rights released, however if rights are retained, servicing assets are recognized as separate assets. Servicing rights are originally recorded at fair value within other assets, but subsequently are amortized in proportion to and over the period of estimated net servicing income, and are assessed for impairment at each reporting date. Fair value is based on market prices for comparable mortgage servicing contracts, when available, or alternatively, is based on a valuation model that calculates the present value of estimated future net servicing income. The valuation model incorporates assumptions that market participants would use in estimating future net servicing income, such as the cost to service, the discount rate, the custodial earnings rate, an inflation rate, ancillary income, prepayment speeds, default rates and losses. Impairment is determined by stratifying the rights based on predominant characteristics, such as interest rate, loan type and investor type. Impairment is recognized through a valuation allowance, to the extent that fair value is less than the capitalized amount. If the Company later determines that all or a portion of the impairment no longer exists, a reduction of the allowance may be recorded as an increase to income. Servicing fee income is recorded for fees earned for servicing loans for investors. The fees are based on a contractual percentage of the outstanding principal or a fixed amount per loan, and are recorded as income when earned. The amortization of mortgage servicing rights is recorded as a reduction of loan servicing fee income. Federal Home Loan Bank Stock The Company, as a member of the Federal Home Loan Bank (“FHLB”) of Boston, is required to maintain an investment in capital stock of the FHLB. Based on redemption provisions, the stock has no quoted market value and is carried at cost. The Company continually reviews its investment to determine if OTTI exists. The Company reviews recent public filings, rating agency analysis and other factors, when making its determination. Bank Premises and Equipment Land is carried at cost. Bank premises and equipment are stated at cost less accumulated depreciation. Depreciation is computed using the straight-line convention method over the estimated useful lives of the assets. Leasehold improvements are amortized over the shorter of the lease terms or the estimated useful lives of the improvements. Expected terms include lease option periods to the extent that the exercise of such options is reasonably assured, not to exceed fifteen years. Goodwill and Other Intangible Assets Goodwill represents the excess of the purchase price over the net fair value of acquired businesses and is not amortized. Goodwill is evaluated for impairment at least annually, or more often if warranted, using a combined qualitative and quantitative impairment approach. The initial qualitative approach assesses whether the existence of events or circumstances led to a determination that it is more likely than not that the fair value of a reporting unit is less than its carrying amount. If, after assessing the totality of events and circumstances, the Company determines it is more likely than not that the fair value is less than carrying value, the two step quantitative impairment test is performed. Step one of the quantitative impairment test compares book value to the fair value of the reporting unit. If step one is failed, a detailed step two analysis is performed, which involves measuring the excess of the fair value of the reporting unit, as determined in step one, over the aggregate fair value of the individual assets, liabilities, and identifiable intangibles as if the reporting unit was being acquired in a business combination. Other intangible assets subject to amortization consist of core deposit intangibles, noncompete agreements, customer lists and market-based favorable or unfavorable lease positions at time of acquisition, and are amortized over the estimated lives of the intangibles using a method that approximates the amount of economic benefits that are realized by the Company. Other intangible assets are reviewed for impairment whenever events or changes in circumstances indicate that the carrying amount of the assets may not be recoverable. The range of useful lives is as follows: Core deposit intangibles 9-10 years Noncompete agreements 3 years Customer lists 10 years Leases 7.5-29 years The determination of which intangible assets have finite lives is subjective, as is the determination of the amortization period for such intangible assets. Impairment of Long-Lived Assets Other Than Goodwill The Company reviews long-lived assets, including premises and equipment, for impairment whenever events or changes in business circumstances indicate that the remaining useful life may warrant revision or that the carrying amount of the long-lived asset may not be fully recoverable. The Company performs undiscounted cash flow analysis to determine if impairment exists. If impairment is determined to exist, any related impairment loss is calculated based on fair value. Impairment losses on assets to be disposed of, if any, are based on the estimated proceeds to be received, less costs of disposal. Cash Surrender Value of Life Insurance Policies Increases in the cash surrender value (“CSV”) of life insurance policies, as well as benefits received net of any CSV, are recorded in other noninterest income, and are not subject to income taxes. The CSV of the policies are recorded as assets of the Bank, with liabilities recognized for any split dollar arrangements associated with the policies. The Company reviews the financial strength of the insurance carriers prior to the purchase of life insurance policies and no less than annually thereafter. A life insurance policy with any individual carrier is limited to 15% of Tier 1 capital (as defined for regulatory purposes) and the total CSV of life insurance policies is limited to 25% of Tier 1 capital. Other Real Estate Owned and Other Foreclosed Assets Real estate properties and other assets, which have served as collateral to secure loans, are held for sale and are initially recorded at fair value less estimated costs to sell at the date control is established, resulting in a new cost basis. The amount by which the recorded investment in the loan exceeds the fair value (net of estimated costs to sell) of the foreclosed asset is charged to the allowance for loan losses. Subsequent declines in the fair value of the foreclosed asset below the new cost basis are recorded through the use of a valuation allowance. Subsequent increases in the fair value are recorded as reductions in the valuation allowance, but not below zero. Upon a sale of a foreclosed asset, any excess of the carrying value over the sale proceeds is recognized as a loss on sale. Any excess of sale proceeds over the carrying value of the foreclosed asset is first applied as a recovery to the valuation allowance, if any, with the remainder being recognized as a gain on sale. Operating expenses and changes in the valuation allowance relating to foreclosed assets are included in other noninterest expense. Derivatives Derivative instruments are carried at fair value in the Company’s financial statements. The accounting for changes in the fair value of a derivative instrument is determined by whether it has been designated and qualifies as part of a hedging relationship, and further, by the type of hedging relationship. At the inception of a hedge, the Company documents certain items, including but not limited to the following: the relationship between hedging instruments and hedged items, the Company risk management objectives, hedging strategies, and the evaluation of hedge transaction effectiveness. Documentation includes linking all derivatives designated as fair value or cash flow hedges to specific assets and liabilities on the balance sheet or to specific forecasted transactions. For those derivative instruments that are designated and qualify for special hedge accounting, the Company designates the hedging instrument, based upon the exposure being hedged, as either a fair value hedge or a cash flow hedge. For derivative instruments that are designated and qualify as a cash flow hedge (i.e., hedging the exposure to variability in expected future cash flows that is attributable to a particular risk), the effective portion of the gain or loss on the derivative instrument is reported as a component of other comprehensive income, net of related tax, and reclassified into earnings in the same period or periods during which the hedged transactions affect earnings. The remaining gain or loss on the derivative instrument in excess of the cumulative change in the present value of future cash flows of the hedged item (i.e., the ineffective portion), if any, is recognized in current earnings during the period. For derivative instruments designated and qualifying as a fair value hedge (i.e., hedging the exposure to changes in the fair value of an asset or liability or an identified portion thereof that is attributable to the hedged risk), the gain or loss on the derivative instrument, as well as the offsetting gain or loss on the hedged item attributable to the hedged risk, are recognized in current earnings during the period of the change in fair values. Hedge accounting is discontinued prospectively when (1) a derivative is no longer highly effective in offsetting changes in the fair value or cash flow of a hedged item, (2) a derivative expires or is settled, (3) it is no longer likely that a forecasted transaction associated with the hedge will occur, or (4) it is determined that designation of a derivative as a hedge is no longer appropriate. To the extent the Company enters into new or re-designates existing hedging relationships, it is the Company's policy to include the Overnight Index Swap Rate in the spectrum of available benchmark

ACQUISITIONS

ACQUISITIONS	12 Months Ended
	Dec. 31, 2015
Business Combinations [Abstract]
ACQUISITIONS	Peoples Federal Bancshares, Inc. On February 20, 2015, the Company completed its acquisition of Peoples Federal Bancshares, Inc. ("Peoples"), the parent of Peoples Federal Saving Bank. The transaction qualified as a tax-free reorganization for federal income tax purposes and Peoples shareholders received, for each share of Peoples common stock, the right to receive either $21.00 in cash per share or 0.5523 shares of the Company's stock (valued at $23.26 per share, based upon the highest trading value of the Company's stock on February 20, 2015 of $42.11 ). The total deal consideration was $141.8 million and was comprised of 40% cash and 60% stock consideration. The cash consideration was $55.4 million in the aggregate, inclusive of cash paid in lieu of fractional shares. The total stock consideration was $86.4 million and resulted in an increase to the Company's outstanding shares of 2,052,137 shares. The Company accounted for the acquisition using the acquisition method pursuant to the Business Combinations Topic of the Financial Accounting Standards Board ("FASB") Accounting Standards Codification ("ASC"). Accordingly, the Company recorded merger and acquisition expenses of $10.5 million during the year ended December 31, 2015. Additionally, the acquisition method requires the acquirer to recognize the assets acquired and the liabilities assumed at their fair values as of the acquisition date. The following table summarizes the estimated fair value of the assets acquired and liabilities assumed as of the date of the acquisition: Net Assets Acquired at Fair Value (Dollars in thousands) Assets Cash $ 41,957 Investments 43,585 Loans 463,927 Premises and equipment 9,346 Goodwill 30,662 Core deposit and other intangibles 3,936 Other assets 46,920 Total assets acquired 640,333 Liabilities Deposits 432,250 Borrowings 51,209 Other liabilities 15,054 Total liabilities assumed 498,513 Purchase price $ 141,820 Fair value adjustments to assets acquired and liabilities assumed are generally amortized using either an effective yield or straight-line basis over periods consistent with the average life, useful life and/or contractual term of the related assets and liabilities. Fair values of the major categories of assets acquired and liabilities assumed were determined as follows: Cash and Cash Equivalents The fair values of cash and cash equivalents approximate the respective carrying amounts because the instruments are payable on demand or have short-term maturities. Investments The fair values of securities were based on quoted market prices for identical securities received from an independent, nationally-recognized, third-party pricing service. Prices provided by the independent pricing service were based on recent trading activity and other observable information including, but not limited to, market interest rate curves, referenced credit spreads and estimated prepayment rates where applicable. Loans The loans acquired were recorded at fair value without a carryover of the allowance for loan losses. Fair value of the loans is determined using market participant assumptions in estimating the amount and timing of both principal and interest cash flows expected to be collected, as adjusted for an estimate of future credit losses and prepayments, and then applying a market-based discount rate to those cash flows. The overall discount on the loans acquired in this transaction was due to anticipated credit loss, as well as considerations for liquidity and market interest rates. A portion of the loans acquired showed evidence of deterioration of credit quality at the purchase date and it was deemed unlikely that the Company will be able to collect all contractually required payments. As such, these loans were deemed to be purchased credit impaired ("PCI") and the carrying value and prospective income recognition are predicated upon future cash flows expected to be collected. The following is a summary of these PCI loans associated with the acquisition as of the date acquired: As of February 20, 2015 (Dollars in thousands) Contractually required principal and interest at acquisition $ 4,358 Contractual cash flows not expected to be collected (1,596 ) Expected cash flows at acquisition 2,762 Interest component of expected cash flows (319 ) Basis in PCI loans at acquisition - estimated fair value $ 2,443 Premises and Equipment The fair value of the premises, including land, buildings and improvements, was determined based upon appraisals by licensed real estate appraisers or pending agreed upon sale prices. The appraisals were based upon the best and highest use of the property with final values determined based upon an analysis of the cost, sales comparison and income capitalization approaches for each property appraised. Core Deposit Intangible The fair value of the core deposit intangible is derived by comparing the interest rate and servicing costs that the financial institution pays on the core deposit liability versus the current market rate for alternative sources of financing, while factoring in estimates over the remaining life and attrition rate of the deposit accounts. The intangible asset represents the stable and relatively low cost source of funds that the deposits and accompanying relationships provide the Company, when compared to alternative funding sources. Deposits The fair value of acquired savings and transaction deposit accounts was assumed to approximate the carrying value as these accounts have no stated maturity and are payable on demand. The fair value of time deposits were determined based on the present value of the contractual cash flows over the remaining period to maturity using a market interest rate. Borrowings The fair values of Federal Home Loan Bank ("FHLB") advances were derived based upon the present value of the principal and interest payments using a current market discount rate. Selected Pro Forma Results The following summarizes the unaudited pro forma results of operations as if the Company acquired Peoples on January 1, 2015 (2014 amounts represent combined results for the Company and Peoples). The selected pro forma financial information is presented for illustrative purposes only and is not necessarily indicative of the financial results of the combined companies had the acquisition actually been completed at the beginning of the periods presented, nor does it indicate future results for any other interim or full-year period. Years Ended December 31 2015 2014 (Dollars in thousands) Net interest income after provision for loan losses $ 216,086 $ 203,296 Net income $ 69,816 $ 60,896 Excluded from the pro forma results of operations for the year ended December 31, 2015 are merger-related costs of $16.7 million , pre-tax, recognized by both the Company and Peoples in the aggregate. These costs were primarily made up of contract terminations arising due to the change in control, the acceleration of certain compensation and benefit costs, and other merger expenses.

SECURITIES

SECURITIES	12 Months Ended
	Dec. 31, 2015
Investments, Debt and Equity Securities [Abstract]
SECURITIES	Trading Securities As of December 31, 2015, the Company had trading securities of $356,000 . These securities are held in a rabbi trust and will be used for future payments associated with the Company's non-qualified 401(k) Restoration Plan and non-qualified deferred compensation plan. There were no such securities at December 31, 2014. Available for Sale and Held to Maturity Securities The following table presents a summary of the amortized cost, gross unrealized holding gains and losses, other-than-temporary impairment recorded in other comprehensive income and fair value of securities available for sale and securities held to maturity for the periods indicated: December 31, 2015 December 31, 2014 Amortized Gross Gross Unrealized Fair Amortized Gross Gross Unrealized Fair (Dollars in thousands) Available for sale securities U.S. government agency securities $ 29,958 $ 261 $ (4 ) $ 30,215 $ 41,369 $ 139 $ (22 ) $ 41,486 Agency mortgage-backed securities 207,693 4,227 (983 ) 210,937 211,168 7,203 (693 ) 217,678 Agency collateralized mortgage obligations 64,157 179 (752 ) 63,584 63,059 599 (623 ) 63,035 State, county, and municipal securities 4,543 116 — 4,659 5,106 117 — 5,223 Single issuer trust preferred securities issued by banks 2,865 8 (81 ) 2,792 2,913 12 (16 ) 2,909 Pooled trust preferred securities issued by banks and insurers (1) 2,217 — (645 ) 1,572 7,906 195 (1,780 ) 6,321 Small business administration pooled securities 40,472 87 (110 ) 40,449 — — — — Equity securities 13,235 374 (568 ) 13,041 11,572 567 (237 ) 11,902 Total available for sale securities 365,140 5,252 (3,143 ) 367,249 343,093 8,832 (3,371 ) 348,554 Held to maturity securities U.S. treasury securities 1,009 55 — 1,064 1,010 63 — 1,073 Agency mortgage-backed securities 167,134 3,460 (219 ) 170,375 159,522 5,422 — 164,944 Agency collateralized mortgage obligations 267,348 1,195 (3,652 ) 264,891 198,220 1,842 (3,478 ) 196,584 State, county, and municipal securities 225 2 — 227 424 4 — 428 Single issuer trust preferred securities issued by banks 1,500 22 — 1,522 1,500 — (23 ) 1,477 Small business administration pooled securities 35,291 437 (64 ) 35,664 9,775 299 — 10,074 Corporate debt securities 5,000 6 — 5,006 5,002 117 — 5,119 Total held to maturity securities 477,507 5,177 (3,935 ) 478,749 375,453 7,747 (3,501 ) 379,699 Total $ 842,647 $ 10,429 $ (7,078 ) $ 845,998 $ 718,546 $ 16,579 $ (6,872 ) $ 728,253 (1) Gross unrealized gains and gross unrealized losses include $ 230,000 of net non-credit related OTTI at December 31, 2014 . There was no non-credit related OTTI at December 31, 2015. When securities are sold, the adjusted cost of the specific security sold is used to compute the gain or loss on the sale. The following table shows the gross realized gains and losses on available for sale securities for the periods indicated: Years Ended December 31 2015 2014 2013 (Dollars in thousands) Equity securities classified as available for sale Gross realized gains $ 20 $ 91 $ (28 ) Gross realized losses (99 ) — — Net realized gain (loss) on equity securities $ (79 ) $ 91 $ (28 ) Fixed income securities classified as available for sale Gross realized gains $ 798 $ 121 $ 258 Gross realized losses (1,124 ) (21 ) — Net realized gain (loss) on fixed income securities $ (326 ) $ 100 $ 258 The actual maturities of certain securities may differ from the contractual maturities because borrowers may have the right to call or prepay obligations with or without call or prepayment penalties. A schedule of the contractual maturities of securities available for sale and securities held to maturity as of December 31, 2015 is presented below: Available for Sale Held to Maturity Amortized Fair Amortized Fair (Dollars in thousands) Due in one year or less $ 499 $ 500 $ 5,250 $ 5,258 Due after one year to five years 34,384 34,715 49 49 Due after five to ten years 91,251 91,178 34,018 34,545 Due after ten years 225,771 227,815 438,190 438,897 Total debt securities 351,905 354,208 477,507 478,749 Equity securities 13,235 13,041 — — Total $ 365,140 $ 367,249 $ 477,507 $ 478,749 Inclusive in the table above is $17.7 million of callable securities at December 31, 2015 . The carrying value of securities pledged to secure public funds, trust deposits, repurchase agreements and for other purposes, as required or permitted by law, was $314.1 million and $340.0 million at December 31, 2015 and 2014 , respectively. At December 31, 2015 and 2014 , the Company had no investments in obligations of individual states, counties, or municipalities, which exceeded 10% of stockholders’ equity . Other-Than-Temporary Impairment The Company continually reviews investment securities for the existence of OTTI, taking into consideration current market conditions, the extent and nature of changes in fair value, issuer rating changes and trends, the credit worthiness of the obligor of the security, volatility of earnings, current analysts’ evaluations, the Company’s intent to sell the security, or whether it is more likely than not that the Company will be required to sell the debt security before its anticipated recovery, as well as other qualitative factors. The term “other-than-temporary” is not intended to indicate that the decline is permanent, but indicates that the prospects for a near-term recovery of value is not necessarily favorable, or that there is a lack of evidence to support a realizable value equal to or greater than the carrying value of the investment. The following tables show the gross unrealized losses and fair value of the Company’s investments in an unrealized loss position, which the Company has not deemed to be OTTI, aggregated by investment category and length of time that individual securities have been in a continuous unrealized loss position: December 31, 2015 Less than 12 months 12 months or longer Total Description of securities # of Fair Value Unrealized Fair Unrealized Fair Value Unrealized (Dollars in thousands) U.S. government agency securities 3 $ 1,990 $ (4 ) $ — $ — $ 1,990 $ (4 ) Agency mortgage-backed securities 57 112,648 (1,062 ) 4,297 (140 ) 116,945 (1,202 ) Agency collateralized mortgage obligations 23 147,707 (1,420 ) 80,927 (2,984 ) 228,634 (4,404 ) Single issuer trust preferred securities issued by banks and insurers 2 1,018 (33 ) 1,018 (48 ) 2,036 (81 ) Pooled trust preferred securities issued by banks and insurers 1 — — 1,572 (645 ) 1,572 (645 ) Small business administration pooled securities 3 37,986 (174 ) — — 37,986 (174 ) Equity securities 34 3,481 (189 ) 4,971 (379 ) 8,452 (568 ) Total temporarily impaired securities 123 $ 304,830 $ (2,882 ) $ 92,785 $ (4,196 ) $ 397,615 $ (7,078 ) December 31, 2014 Less than 12 months 12 months or longer Total Description of securities # of Fair Value Unrealized Fair Unrealized Fair Value Unrealized (Dollars in thousands) U.S.government agency securities 22 $ 21,950 $ (22 ) $ — $ — $ 21,950 $ (22 ) Agency mortgage-backed securities 17 3,471 (1 ) 42,222 (692 ) 45,693 (693 ) Agency collateralized mortgage obligations 14 35,083 (331 ) 94,974 (3,770 ) 130,057 (4,101 ) Single issuer trust preferred securities issued by banks and insurers 2 2,553 (39 ) — — 2,553 (39 ) Pooled trust preferred securities issued by banks and insurers 2 — — 2,681 (1,356 ) 2,681 (1,356 ) Equity securities 23 1,480 (74 ) 4,072 (163 ) 5,552 (237 ) Total temporarily impaired securities 80 $ 64,537 $ (467 ) $ 143,949 $ (5,981 ) $ 208,486 $ (6,448 ) The Company does not intend to sell these investments and has determined based upon available evidence that it is more likely than not that the Company will not be required to sell the security before the recovery of its amortized cost basis. As a result, the Company does not consider these investments to be OTTI. The Company made this determination by reviewing various qualitative and quantitative factors regarding each investment category, such as current market conditions, extent and nature of changes in fair value, issuer rating changes and trends, volatility of earnings, and current analysts’ evaluations. As a result of the Company’s review of these qualitative and quantitative factors, the causes of the impairments listed in the table above by category are as follows at December 31, 2015 : • U.S. Government Agency Securities, Agency Mortgage-Backed Securities, Agency Collateralized Mortgage Obligations and Small Business Administration Pooled Securities: These portfolios have contractual terms that generally do not permit the issuer to settle the securities at a price less than the current par value of the investment. The decline in market value of these securities is attributable to changes in interest rates and not credit quality. Additionally, these securities are implicitly guaranteed by the U.S. Government or one of its agencies. • Single Issuer Trust Preferred Securities: This portfolio consists of two securities, one of which is below investment grade. The unrealized loss on these securities is attributable to the illiquid nature of the trust preferred market in the current economic environment. Management evaluates various financial metrics for the issuers, including regulatory capital ratios of the issuers. • Pooled Trust Preferred Securities: This portfolio consists of one below investment grade security which is performing. The unrealized loss on this security is attributable to the illiquid nature of the trust preferred market and the significant risk premiums required in the current economic environment. Management evaluates collateral credit and instrument structure, including current and expected deferral and default rates and timing. In addition, discount rates are determined by evaluating comparable spreads observed currently in the market for similar instruments. • Equity Securities : This portfolio consists of mutual funds and other equity investments. During some periods, the mutual funds in the Company’s investment portfolio may have unrealized losses resulting from market fluctuations as well as the risk premium associated with that particular asset class. For example, emerging market equities tend to trade at a higher risk premium than U.S. government bonds and thus, will fluctuate to a greater degree on both the upside and the downside. In the context of a well-diversified portfolio, however, the correlation amongst the various asset classes represented by the funds serves to minimize downside risk. The Company evaluates each mutual fund in the portfolio regularly and measures performance on both an absolute and relative basis. A reasonable recovery period for positions with an unrealized loss is based on management’s assessment of general economic data, trends within a particular asset class, valuations, earnings forecasts and bond durations. The Company has the ability and intent to hold these equity securities until a recovery of fair value. The following table shows the total OTTI that the Company recorded for the periods indicated: Years Ended December 31 2015 2014 2013 (Dollars in thousands) Gross change in OTTI recorded on certain investments $ — $ 2,098 $ 588 Portion of OTTI recognized in OCI — (2,098 ) (588 ) Total credit related OTTI recognized in earnings $ — $ — $ — The following table shows the cumulative credit related component of OTTI for the periods indicated: 2015 2014 2013 (Dollars in thousands) Balance at beginning of period $ (9,997 ) $ (9,997 ) $ (10,847 ) Add Incurred on securities not previously impaired — — — Incurred on securities previously impaired — — — Less Securities sold during the period 9,997 — 850 Reclassification due to changes in Company’s intent — — — Increases in cash flow expected to be collected — — — Balance at end of period $ — $ (9,997 ) $ (9,997 )

LOANS, ALLOWANCE FOR LOAN LOSSE

LOANS, ALLOWANCE FOR LOAN LOSSES AND CREDIT QUALITY	12 Months Ended
	Dec. 31, 2015
Loans, Allowance for Loan Losses and Credit Quality [Abstract]
LOANS, ALLOWANCE FOR LOAN LOSSES AND CREDIT QUALITY	LOANS, ALLOWANCE FOR LOAN LOSSES AND CREDIT QUALITY Allowance for Loan Losses The following table summarizes changes in the allowance for loan losses by loan category and bifurcates the amount of allowance allocated to each loan category based on collective impairment analysis and loans evaluated individually for impairment: December 31, 2015 Commercial Commercial Commercial Small Residential Home Other Consumer Total (Dollars in thousands) Allowance for loan losses Beginning balance $ 15,573 $ 25,873 $ 3,945 $ 1,171 $ 2,834 $ 4,956 $ 748 $ 55,100 Charge-offs (2,010 ) (330 ) — (267 ) (285 ) (710 ) (1,316 ) (4,918 ) Recoveries 1,593 1,073 — 264 133 356 724 4,143 Provision (benefit) (1,354 ) 711 1,421 96 (92 ) 287 431 1,500 Ending balance $ 13,802 $ 27,327 $ 5,366 $ 1,264 $ 2,590 $ 4,889 $ 587 $ 55,825 Ending balance: collectively evaluated for impairment $ 13,619 $ 27,123 $ 5,366 $ 1,260 $ 1,312 $ 4,651 $ 564 $ 53,895 Ending balance: individually evaluated for impairment $ 183 $ 204 $ — $ 4 $ 1,278 $ 238 $ 23 $ 1,930 Financing receivables ending balance: Collectively evaluated for impairment $ 838,129 $ 2,619,294 $ 373,064 $ 95,225 $ 614,014 $ 921,563 $ 14,427 $ 5,475,716 Individually evaluated for impairment 5,147 22,986 304 1,021 15,405 5,989 558 51,410 Purchased credit impaired loans — 11,154 — — 9,187 251 3 20,595 Total loans by group $ 843,276 $ 2,653,434 $ 373,368 $ 96,246 $ 638,606 $ 927,803 $ 14,988 $ 5,547,721 (1) December 31, 2014 Commercial Commercial Commercial Small Residential Home Other Consumer Total (Dollars in thousands) Allowance for loan losses Beginning balance $ 15,622 $ 24,541 $ 3,371 $ 1,215 $ 2,760 $ 5,036 $ 694 $ 53,239 Charge-offs (2,097 ) (5,454 ) — (605 ) (826 ) (750 ) (1,215 ) (10,947 ) Recoveries 462 404 — 275 424 249 591 2,405 Provision (benefit) $ 1,586 $ 6,382 $ 574 $ 286 $ 476 $ 421 $ 678 $ 10,403 Ending balance $ 15,573 $ 25,873 $ 3,945 $ 1,171 $ 2,834 $ 4,956 $ 748 $ 55,100 Ending balance: collectively evaluated for impairment $ 15,161 $ 25,676 $ 3,945 $ 1,164 $ 1,334 $ 4,694 $ 710 $ 52,684 Ending balance: individually evaluated for impairment $ 412 $ 197 $ — $ 7 $ 1,500 $ 262 $ 38 $ 2,416 Financing receivables ending balance: Collectively evaluated for impairment $ 856,185 $ 2,304,099 $ 265,501 $ 84,159 $ 505,799 $ 858,305 $ 16,335 $ 4,890,383 Individually evaluated for impairment 4,654 30,729 311 1,088 15,055 5,330 868 58,035 Purchased credit impaired loans — 12,495 182 — 9,405 228 5 22,315 Total loans by group $ 860,839 $ 2,347,323 $ 265,994 $ 85,247 $ 530,259 $ 863,863 $ 17,208 $ 4,970,733 (1) December 31, 2013 Commercial Commercial Commercial Small Residential Other Consumer Total (Dollars in thousands) Allowance for loan losses Beginning balance $ 13,461 $ 22,598 $ 2,811 $ 1,524 $ 2,930 $ 7,703 $ 807 $ 51,834 Charge-offs (2,683 ) (3,587 ) (308 ) (773 ) (622 ) (1,370 ) (1,175 ) (10,518 ) Recoveries 272 206 100 279 143 135 588 1,723 Provision (benefit) 4,572 5,324 768 185 309 (1,432 ) 474 10,200 Ending balance $ 15,622 $ 24,541 $ 3,371 $ 1,215 $ 2,760 $ 5,036 $ 694 $ 53,239 Ending balance: collectively evaluated for impairment $ 14,472 $ 23,776 $ 3,371 $ 1,106 $ 1,196 $ 4,920 $ 624 $ 49,465 Ending balance: individually evaluated for impairment $ 1,150 $ 765 $ — $ 109 $ 1,564 $ 116 $ 70 $ 3,774 Financing receivables ending balance: Collectively evaluated for impairment $ 775,053 $ 2,191,132 $ 223,562 $ 75,337 $ 515,854 $ 816,925 $ 18,845 $ 4,616,708 Individually evaluated for impairment 9,148 39,516 100 1,903 15,200 4,890 1,298 72,055 Purchase credit impaired loans 1 18,612 197 — 10,389 326 19 29,544 Total loans by group $ 784,202 $ 2,249,260 $ 223,859 $ 77,240 $ 541,443 $ 822,141 $ 20,162 $ 4,718,307 (1) (1) The amount of net deferred fees on loans and net unamortized discounts on acquired loans not deemed to be PCI included in the ending balance was $10.9 million , $4.7 million , and $3.9 million at December 31, 2015 , 2014 , and 2013 , respectively. For the purpose of estimating the allowance for loan losses, management segregates the loan portfolio into the portfolio segments detailed in the above tables. Each of these loan categories possesses unique risk characteristics that are considered when determining the appropriate level of allowance for each segment. Some of the risk characteristics unique to each loan category include: Commercial Portfolio • Commercial and Industrial : Loans in this category consist of revolving and term loan obligations extended to business and corporate enterprises for the purpose of financing working capital and/or capital investment. Collateral generally consists of pledges of business assets including, but not limited to: accounts receivable, inventory, plant & equipment, or real estate, if applicable. Repayment sources consist of primarily, operating cash flow, and secondarily, liquidation of assets. • Commercial Real Estate : Loans in this category consist of mortgage loans to finance investment in real property such as multi-family residential, commercial/retail, office, industrial, hotels, educational and healthcare facilities and other specific use properties. Loans are typically written with amortizing payment structures. Collateral values are determined based upon third party appraisals and evaluations. Loan to value ratios at origination are governed by established policy and regulatory guidelines. Repayment sources consist of primarily, cash flow from operating leases and rents, and secondarily, liquidation of assets. • Commercial Construction : Loans in this category consist of short-term construction loans, revolving and nonrevolving credit lines and construction/permanent loans to finance the acquisition, development and construction or rehabilitation of real property. Project types include residential 1-4 family, condominium and multi-family homes, commercial/retail, office, industrial, hotels, educational and healthcare facilities and other specific use properties. Loans may be written with nonamortizing or hybrid payment structures depending upon the type of project. Collateral values are determined based upon third party appraisals and evaluations. Loan to value ratios at origination are governed by established policy and regulatory guidelines. Repayment sources vary depending upon the type of project and may consist of sale or lease of units, operating cash flows or liquidation of other assets. • Small Business: Loans in this category consist of revolving, term loan and mortgage obligations extended to sole proprietors and small businesses for purposes of financing working capital and/or capital investment. Collateral generally consists of pledges of business assets including, but not limited to, accounts receivable, inventory, plant & equipment, or real estate if applicable. Repayment sources consist primarily of operating cash flows, and secondarily, liquidation of assets. For the commercial portfolio it is the Company’s policy to obtain personal guarantees for payment from individuals holding material ownership interests of the borrowing entities. Consumer Portfolio • Residential Real Estate : Residential mortgage loans held in the Company’s portfolio are made to borrowers who demonstrate the ability to make scheduled payments with full consideration to underwriting factors such as current and expected income, employment status, current assets, other financial resources, credit history and the value of the collateral. Collateral consists of mortgage liens on 1-4 family residential properties. The Company does not originate or purchase sub-prime loans. • Home Equity : Home equity loans and lines are made to qualified individuals and are primarily secured by senior or junior mortgage liens on owner-occupied 1-4 family homes, condominiums or vacation homes. The home equity loan has a fixed rate and is billed in equal payments comprised of principal and interest. The home equity line of credit has a variable rate and is billed in interest-only payments during the draw period. At the end of the draw period, the home equity line of credit is billed as a percentage of the principal balance plus all accrued interest. Additionally, the Company has the option of renewing the line of credit for additional draw periods. Borrower qualifications include favorable credit history combined with supportive income requirements and combined loan to value ratios within established policy guidelines. • Other Consumer: Other consumer loan products include personal lines of credit and amortizing loans made to qualified individuals for various purposes such as education, debt consolidation, personal expenses or overdraft protection. Borrower qualifications include favorable credit history combined with supportive income and collateral requirements within established policy guidelines. These loans may be secured or unsecured. Credit Quality The Company continually monitors the asset quality of the loan portfolio using all available information. Based on this information, loans demonstrating certain payment issues or other weaknesses may be categorized as delinquent, impaired, nonperforming and/or put on nonaccrual status. Additionally, in the course of resolving such loans, the Company may choose to restructure the contractual terms of certain loans to match the borrower’s ability to repay the loan based on their current financial condition. If a restructured loan meets certain criteria, it may be categorized as a troubled debt restructuring (“TDR”). The Company reviews numerous credit quality indicators when assessing the risk in its loan portfolio. For the commercial portfolio, the Company utilizes a 10-point commercial risk-rating system, which assigns a risk-grade to each borrower based on a number of quantitative and qualitative factors associated with a commercial loan transaction. Factors considered include industry and market conditions, position within the industry, earnings trends, operating cash flow, asset/liability values, debt capacity, guarantor strength, management and controls, financial reporting, collateral, and other considerations. The risk-ratings categories are defined as follows: • 1- 6 Rating — Pass: Risk-rating grades “1” through “6” comprise those loans ranging from ‘Substantially Risk Free’ which indicates borrowers are of unquestioned credit standing and the pinnacle of credit quality, well established companies with a very strong financial condition, and loans fully secured by cash collateral, through ‘Acceptable Risk’, which indicates borrowers may exhibit declining earnings, strained cash flow, increasing or above average leverage and/or weakening market fundamentals that indicate below average asset quality, margins and market share. Collateral coverage is protective. • 7 Rating — Potential Weakness: Borrowers exhibit potential credit weaknesses or downward trends deserving management’s close attention. If not checked or corrected, these trends will weaken the Company’s asset and position. While potentially weak, currently these borrowers are marginally acceptable; no loss of principal or interest is envisioned. • 8 Rating — Definite Weakness Loss Unlikely: Borrowers exhibit well defined weaknesses that jeopardize the orderly liquidation of debt. Loan may be inadequately protected by the current net worth and paying capacity of the obligor or by the collateral pledged, if any. Normal repayment from the borrower is in jeopardy, although no loss of principal is envisioned. However, there is a distinct possibility that a partial loss of interest and/or principal will occur if the deficiencies are not corrected. Collateral coverage may be inadequate to cover the principal obligation. • 9 Rating — Partial Loss Probable: Borrowers exhibit well defined weaknesses that jeopardize the orderly liquidation of debt with the added provision that the weaknesses make collection of the debt in full, on the basis of currently existing facts, conditions, and values, highly questionable and improbable. Serious problems exist to the point where partial loss of principal is likely. • 10 Rating — Definite Loss: Borrowers deemed incapable of repayment. Loans to such borrowers are considered uncollectible and of such little value that continuation as active assets of the Company is not warranted. The credit quality of the commercial loan portfolio is actively monitored and any changes in credit quality are reflected in risk-rating changes. Risk-ratings are assigned or reviewed for all new loans, when advancing significant additions to existing relationships (over $50,000 ), at least quarterly for all actively managed loans, and any time a significant event occurs, including at renewal of the loan. The Company utilizes a comprehensive strategy for monitoring commercial credit quality. Borrowers are required to provide updated financial information at least annually which is carefully evaluated for any changes in credit quality. Larger loan relationships are subject to a full annual credit review by an experienced credit analysis group. Additionally, the Company retains an independent loan review firm to evaluate the credit quality of the commercial loan portfolio. The independent loan review process achieves significant penetration into the commercial loan portfolio and reports the results of these reviews to the Audit Committee of the Board of Directors on a quarterly basis. The following table details the amount of outstanding principal balances relative to each of the risk-rating categories for the Company’s commercial portfolio: The following table details the internal risk-rating categories for the Company’s commercial portfolio: December 31, 2015 Category Risk Commercial and Commercial Real Commercial Small Business Total (Dollars in thousands) Pass 1 - 6 $ 765,753 $ 2,484,025 $ 363,781 $ 93,008 $ 3,706,567 Potential weakness 7 54,375 112,022 7,678 2,444 176,519 Definite weakness 8 23,073 56,276 1,909 732 81,990 Partial loss probable 9 75 1,111 — 62 1,248 Definite loss 10 — — — — — Total $ 843,276 $ 2,653,434 $ 373,368 $ 96,246 $ 3,966,324 December 31, 2014 Category Risk Commercial and Commercial Real Commercial Small Business Total (Dollars in thousands) Pass 1 - 6 $ 801,578 $ 2,196,109 $ 248,696 $ 81,255 $ 3,327,638 Potential weakness 7 37,802 82,372 15,464 2,932 138,570 Definite weakness 8 20,241 67,571 1,834 949 90,595 Partial loss probable 9 1,218 1,271 — 111 2,600 Definite loss 10 — — — — — Total $ 860,839 $ 2,347,323 $ 265,994 $ 85,247 $ 3,559,403 For the Company’s consumer portfolio, the quality of the loan is best indicated by the repayment performance of an individual borrower. However, the Company does supplement performance data with current Fair Isaac Corporation (“FICO”) scores and Loan to Value (“LTV”) estimates. Current FICO data is purchased and appended to all consumer loans on a quarterly basis. In addition, automated valuation services and broker opinions of value are used to supplement original value data for the residential and home equity portfolios, periodically. The following table shows the weighted average FICO scores and the weighted average combined LTV ratios as of the periods indicated below: December 31 2015 2014 Residential portfolio FICO score (re-scored)(1) 742 739 LTV (re-valued)(2) 61.4 % 67.1 % Home equity portfolio FICO score (re-scored)(1) 765 764 LTV (re-valued)(2) 55.8 % 53.6 % (1) The average FICO scores above are based upon rescores available from November and origination score data for loans booked between December 1 and December 31, for the years indicated. (2) The combined LTV ratios for December 31, 2015 are based upon updated automated valuations as of March 31, 2015 and actual score data for loans booked from April 1, 2015 through December 31, 2015. The combined LTV ratios for December 31, 2014 are based upon updated automated valuations as of February 28, 2013 and actual score data for loans booked from March 1, 2013 through December 31, 2014. For home equity loans and lines in a subordinate lien, the LTV data represents a combined LTV, taking into account the senior lien data for loans and lines. Asset Quality The Bank’s philosophy toward managing its loan portfolios is predicated upon careful monitoring, which stresses early detection and response to delinquent and default situations. Delinquent loans are managed by a team of seasoned collection specialists and the Bank seeks to make arrangements to resolve any delinquent or default situation over the shortest possible time frame. As a general rule, loans more than 90 days past due with respect to principal or interest are classified as nonaccrual loans. The Company also may use discretion regarding other loans over 90 days delinquent if the loan is well secured and/or in process of collection. Set forth is information regarding the Company’s nonperforming loans at the period shown: The following table shows nonaccrual loans at the dates indicated: December 31 2015 2014 (Dollars in thousands) Commercial and industrial $ 3,699 $ 2,822 Commercial real estate 7,856 7,279 Commercial construction 304 311 Small business 239 246 Residential real estate 8,795 8,697 Home equity 6,742 8,038 Other consumer 55 — Total nonaccrual loans(1) $ 27,690 $ 27,393 (1) Included in these amounts were $5.2 million nonaccruing TDRs at both December 31, 2015 and 2014 , respectively. The following table shows information regarding foreclosed residential real estate property at the date indicated: December 31, 2015 (Dollars in thousands) Foreclosed residential real estate property held by the creditor $ 1,430 Recorded investment in mortgage loans collateralized by residential real estate property that are in the process of foreclosure $ 285 The following table shows the age analysis of past due financing receivables as of the dates indicated: December 31, 2015 30-59 days 60-89 days 90 days or more Total Past Due Current Total Recorded Number Principal Number Principal Number Principal Number Principal (Dollars in thousands) Commercial and industrial 9 $ 399 4 $ 1,021 8 $ 3,039 21 $ 4,459 $ 838,817 $ 843,276 $ — Commercial real estate 19 7,349 6 1,627 13 4,458 38 13,434 2,640,000 2,653,434 — Commercial construction — — — — 1 304 1 304 373,064 373,368 — Small business 11 93 4 9 13 69 28 171 96,075 96,246 — Residential real estate 20 3,119 11 2,049 19 3,433 50 8,601 630,005 638,606 — Home equity 21 1,526 11 903 20 1,338 52 3,767 924,036 927,803 — Other consumer 297 231 12 65 13 25 322 321 14,667 14,988 — Total 377 $ 12,717 48 $ 5,674 87 $ 12,666 512 $ 31,057 $ 5,516,664 $ 5,547,721 $ — December 31, 2014 30-59 days 60-89 days 90 days or more Total Past Due Current Total Recorded Number Principal Number Principal Number Principal Number Principal (Dollars in thousands) Commercial and industrial 18 $ 3,192 10 $ 1,007 19 $ 2,320 47 $ 6,519 $ 854,320 $ 860,839 $ — Commercial real estate 19 13,428 6 1,480 16 4,225 41 19,133 2,328,190 2,347,323 — Commercial construction 1 506 — — 1 311 2 817 265,177 265,994 — Small business 7 21 8 113 7 173 22 307 84,940 85,247 — Residential real estate 13 1,670 10 1,798 36 4,826 59 8,294 521,965 530,259 106 Home equity 20 1,559 7 307 23 2,402 50 4,268 859,595 863,863 — Other consumer 318 382 16 23 15 15 349 420 16,788 17,208 13 Total 396 $ 20,758 57 $ 4,728 117 $ 14,272 570 $ 39,758 $ 4,930,975 $ 4,970,733 $ 119 Troubled Debt Restructurings In the course of resolving nonperforming loans, the Bank may choose to restructure the contractual terms of certain loans. The Bank attempts to work out an alternative payment schedule with the borrower in order to avoid foreclosure actions. Any loans that are modified are reviewed by the Bank to identify if a TDR has occurred, which is when, for economic or legal reasons related to a borrower’s financial difficulties, the Bank grants a concession to the borrower that it would not otherwise consider. Terms may be modified to fit the ability of the borrower to repay in line with its current financial status and the restructuring of the loan may include the transfer of assets from the borrower to satisfy the debt, a modification of loan terms, or a combination of the two. The following table shows the Company’s total TDRs and other pertinent information as of the dates indicated: December 31 2015 2014 (Dollars in thousands) TDRs on accrual status $ 32,849 $ 38,382 TDRs on nonaccrual status 5,225 5,248 Total TDRs $ 38,074 $ 43,630 Amount of specific reserves included in the allowance for loan loss associated with TDRs: $ 1,628 $ 2,004 Additional commitments to lend to a borrower who has been a party to a TDR: $ 972 $ 1,400 The Company’s policy is to have any restructured loan which is on nonaccrual status prior to being modified remain on nonaccrual status for six months, subsequent to being modified, before management considers its return to accrual status. If the restructured loan is on accrual status prior to being modified, it is reviewed to determine if the modified loan should remain on accrual status. Additionally, loans classified as TDRs are adjusted to reflect the changes in value of the recorded investment in the loan, if any, resulting from the granting of a concession. For all residential loan modifications, the borrower must perform during a 90 day trial period before the modification is finalized. The following table shows the modifications which occurred during the periods indicated and the change in the recorded investment subsequent to the modifications occurring: Years Ended December 31 2015 Number Pre-Modification Post-Modification (Dollars in thousands) Troubled debt restructurings Commercial and industrial 13 $ 1,314 $ 1,314 Commercial real estate 6 2,941 2,941 Small business 9 293 293 Residential real estate 8 843 870 Home equity 8 694 694 Total 44 $ 6,085 $ 6,112 2014 Troubled debt restructurings Commercial and industrial 12 $ 681 $ 681 Commercial real estate 13 4,329 4,329 Small business 5 133 133 Residential real estate 9 1,535 1,568 Home equity 11 923 926 Other consumer 1 8 8 Total 51 $ 7,609 $ 7,645 2013 Troubled debt restructurings Commercial and industrial 11 $ 732 $ 732 Commercial real estate 9 8,100 8,100 Small business 12 556 556 Residential real estate 9 2,401 2,427 Home equity 17 1,347 1,347 Other consumer 9 27 27 Total 67 $ 13,163 $ 13,189 (1) The post-modification balances represent the legal principal balance of the loan on the date of modification. These amounts may show an increase when modifications include a capitalization of interest. The following table shows the Company’s post-modification balance of TDRs listed by type of modification as of the periods indicated: Years Ended December 31 2015 2014 2013 (Dollars in thousands) Extended maturity $ 2,936 $ 3,441 $ 3,582 Adjusted interest rate — 727 — Combination rate and maturity 2,199 2,640 8,917 Court ordered concession 977 837 690 Total $ 6,112 $ 7,645 $ 13,189 The Company considers a loan to have defaulted when it reaches 90 days past due. The following table shows loans that were modified during the prior twelve months and subsequently defaulted during the periods indicated: Years Ended December 31 2015 2014 2013 Number Recorded Number Recorded Number Recorded (Dollars in thousands) Troubled debt restructurings that subsequently defaulted Commercial & industrial 3 $ 339 2 $ 196 — $ — Commercial real estate 1 502 — — 1 176 Residential real estate 2 326 3 214 — — Home equity 1 100 — — — — Other consumer — — — — 1 1 Total 7 $ 1,267 5 $ 410 2 $ 177 All TDR loans are considered impaired and therefore are subject to a specific review for impairment. The impairment analysis appropriately discounts the present value of the anticipated cash flows by the loan’s contractual rate of interest in effect prior to the loan’s modification. The amount of impairment, if any, is recorded as a specific loss allocation to each individual loan in the allowance for loan losses. Commercial loans (commercial and industrial, commercial construction, commercial real estate and small business loans), residential loans, and home equity loans that have been classified as TDRs and which subsequently default are reviewed to determine if the loan should be deemed collateral dependent. In such an instance, any shortfall between the value of the collateral and the carrying value of the loan is determined by measuring the recorded investment in the loan against the fair value of the collateral less costs to sell. The Company charges off the amount of any confirmed loan loss in the period when the loans, or portion of loans, are deemed uncollectible. Smaller balance consumer TDR loans are reviewed for performance to determine when a charge-off is appropriate. Impaired Loans A loan is considered impaired when, based on current information and events, it is probable that the Company will be unable to collect the scheduled payments of principal or interest when due according to the contractual terms of the loan agreement. Factors considered by management in determining impairment include payment status, collateral value, and the probability of collecting scheduled principal and interest payments when due. Loans that experience insignificant payment delays and payment shortfalls generally are not classified as impaired. Management determines the significance of payment delays and payment shortfalls on a case-by-case basis, taking into consideration all of the circumstances surrounding the loan and the borrower, including the length of the delay, the reasons for the delay, the borrower’s prior payment record, and the amount of the shortfall in relation to the principal and interest owed. The table below sets forth information regarding the Company’s impaired loans as of the dates indicated: As of and For the Years Ended December 31 2015 Recorded Unpaid Related Average Interest Income Recognized (Dollars in thousands) With no related allowance recorded Commercial and industrial $ 2,613 $ 3,002 $ — $ 3,024 $ 71 Commercial real estate 12,008 13,128 — 11,676 375 Commercial construction 304 305 — 308 — Small business 527 618 — 584 22 Residential real estate 3,874 4,033 — 3,958 157 Home equity 4,893 5,005 — 5,023 195 Other consumer 184 185 — 201 15 Subtotal 24,403 26,276 — 24,774 835 With an allowance recorded Commercial and industrial 2,534 2,648 183 2,848 48 Commercial real estate 10,978 11,047 204 10,789 592 Small business 494 523 4 535 30 Residential real estate 11,531 12,652 1,278 11,669 460 Home equity 1,096 1,287 238 655 14 Other consumer 374 389 23 408 14 Subtotal 27,007 28,546 1,930 26,904 1,158 Total $ 51,410 $ 54,822 $ 1,930 $ 51,678 $ 1,993 2014 Recorded Unpaid Related Average Interest (Dollars in thousands) With no related allowance recorded Commercial and industrial $ 3,005 $ 3,278 $ — $ 4,557 $ 258 Commercial real estate 15,982 17,164 — 16,703 1,025 Commercial construction 311 311 — 311 13 Small business 692 718 — 772 45 Residential real estate 2,439 2,502 — 2,493 102 Home equity 4,169 4,221 — 4,264 198 Other consumer 338 341 — 364 24 Subtotal 26,936 28,535 — 29,464 1,665 With an allowance recorded Commercial and industrial 1,649 1,859 412 2,032 98 Commercial real estate 14,747 15,514 197 15,650 842 Small business 396 458 7 456 32 Residential real estate 12,616 13,727 1,500 12,817 537 Home equity 1,161 1,264 262 1,203 46 Other consumer 530 530 38 580 22 Subtotal 31,099 33,352 2,416 32,738 1,577 Total $ 58,035 $ 61,887 $ 2,416 $ 62,202 $ 3,242 2013 Recorded Unpaid Related Average Interest (Dollars in thousands) With no related allowance recorded Commercial and industrial $ 7,147 $ 7,288 $ — $ 7,338 $ 338 Commercial real estate 14,283 15,891 — 15,728 1,075 Commercial construction 100 408 — 1,105 43 Small business 1,474 1,805 — 1,854 121 Residential real estate 1,972 2,026 — 2,021 95 Home equity 4,263 4,322 — 4,335 202 Other consumer 446 446 — 515 41 Subtotal 29,685 32,186 — 32,896 1,915 With an allowance recorded Commercial and industrial 2,001 2,045 1,150 2,572 125 Commercial real estate 25,233 25,377 765 25,595 1,326 Small business 429 462 109 459 28 Residential real estate 13,228 14,197 1,564 13,405 515 Home equity 627 694 116 642 26 Other consumer 852 856 70 954 33 Subtotal 42,370 43,631 3,774 43,627 2,053 Total $ 72,055 $ 75,817 $ 3,774 $ 76,523 $ 3,968 Purchased Credit Impaired Loans Certain loans acquired by the Company may have shown evidence of deterioration of credit quality since origination and it was therefore deemed unlikely that the Company would be able to collect all contractually required payments. As such, these loans were deemed to be PCI loans and the carrying value and prospective income recognition are predicated upon future cash flows expected to be collected. The following table displays certain information pertaining to PCI loans at the dates indicated: December 31 2015 2014 (Dollars in thousands) Outstanding balance $ 23,199 $ 25,279 Carrying amount $ 20,595 $ 22,315 The following table summarizes activity in the accretable yield for the PCI loan portfolio: 2015 2014 (Dollars in thousands) Beginning balance $ 2,974 $ 2,514 Acquisition 319 — Accretion (2,485 ) (2,299 ) Other change in expected cash flows (1) 1,721 2,565 Reclassification from nonaccretable difference for loans which have paid off (2) 298 194 Ending balance $ 2,827 $ 2,974 (1) Represents changes in cash flows expected to be collected and resulting in increased interest income as a prospective yield adjustment over the remaining life of the loan(s). (2) Results in increased income during the period when a loan pays off at amount greater than originally expected.

BANK PREMISES AND EQUIPMENT

BANK PREMISES AND EQUIPMENT	12 Months Ended
	Dec. 31, 2015
Property, Plant and Equipment [Abstract]
BANK PREMISES AND EQUIPMENT	Bank premises and equipment at December 31, were as follows: 2015 2014 Estimated (Dollars in thousands) (In years) Cost Land $ 20,780 $ 15,786 n/a Bank premises 39,182 33,425 5-39 Leasehold improvements 22,817 20,797 1-27 Furniture and equipment 55,336 49,894 2-12 Total cost 138,115 119,902 Accumulated depreciation (62,452 ) (55,828 ) Net bank premises and equipment $ 75,663 $ 64,074 Depreciation expense related to bank premises and equipment was $7.0 million in 2015 , $6.6 million in 2014 , and $6.1 million in 2013 , which is primarily included in occupancy and equipment expenses. Depreciation expense relating to computer software is included within other noninterest expense. In addition, the Company has recognized impairment of $109,000 , $670,000 , and $93,000 during 2015, 2014 and 2013, respectively, relating to certain Bank premises.

GOODWILL AND IDENTIFIABLE INTAN

GOODWILL AND IDENTIFIABLE INTANGIBLE ASSETS	12 Months Ended
	Dec. 31, 2015
Goodwill and Intangible Assets Disclosure [Abstract]
GOODWILL AND IDENTIFIABLE INTANGIBLE ASSETS	The following table sets forth the carrying value of goodwill and other intangible assets, net of accumulated amortization, at December 31: 2015 2014 (Dollars in thousands) Balances not subject to amortization Goodwill $ 201,083 $ 170,421 Balances subject to amortization Core deposit intangibles 10,264 9,269 Other intangible assets 1,562 616 Total other intangible assets 11,826 9,885 Total goodwill and other intangible assets $ 212,909 $ 180,306 The changes in the carrying value of goodwill for the periods indicated were as follows: 2015 2014 (Dollars in thousands) Balance at beginning of year $ 170,421 $ 170,421 Acquisitions 30,662 — Balance at end of year $ 201,083 $ 170,421 The gross carrying amount and accumulated amortization of other intangible assets were as follows at the periods indicated: 2015 2014 Gross Accumulated Net Gross Accumulated Net (Dollars in thousands) Core deposit intangibles $ 23,367 $ (13,103 ) $ 10,264 $ 20,147 $ (10,878 ) $ 9,269 Other intangible assets 3,051 (1,489 ) 1,562 1,940 (1,324 ) 616 Total $ 26,418 $ (14,592 ) $ 11,826 $ 22,087 $ (12,202 ) $ 9,885 Amortization of intangible assets was $2.8 million , $2.3 million , and $2.1 million , for 2015 , 2014 , and 2013 , respectively. The following table sets forth the estimated annual amortization expense of intangible assets for each of the next five years: Year Amount (Dollars in thousands) 2016 $ 2,767 2017 $ 2,747 2018 $ 1,781 2019 $ 1,135 2020 $ 948 The original weighted average amortization period for intangible assets is 9.8 years .

DEPOSITS

DEPOSITS	12 Months Ended
	Dec. 31, 2015
Banking and Thrift [Abstract]
DEPOSITS	The following is a summary of the scheduled maturities of time deposits as of December 31: 2015 2014 (Dollars in thousands) 1 year or less $ 488,046 71.2 % $ 462,506 71.2 % Over 1 year to 2 years 83,244 12.2 % 102,385 15.8 % Over 2 years to 3 years 31,017 4.5 % 29,044 4.5 % Over 3 years to 4 years 35,448 5.2 % 26,156 4.0 % Over 4 years to 5 years 47,075 6.9 % 29,529 4.5 % Total $ 684,830 100.0 % $ 649,620 100.0 % The amounts of overdraft deposits that were reclassified to the loan category at December 31, 2015 and 2014 were $2.8 million and $3.5 million , respectively. The Company has pledged assets as collateral covering certain deposits in the amount of $179.6 million and $173.0 million at December 31, 2015 and 2014, respectively. The Bank's deposit accounts are insured to the maximum extent permitted by law by the Deposit Insurance Fund which is administered by the FDIC. The FDIC offers insurance coverage on deposits up to the federally insured limit of $250,000. The amount of time deposits accounts equal to and greater than $250,000 as of December 31, 2015 and 2014 is $69.6 million and $54.5 million , respectively.

BORROWINGS

BORROWINGS	12 Months Ended
	Dec. 31, 2015
Debt Disclosure [Abstract]
BORROWINGS	Federal Home Loan Bank Borrowings Advances payable to the Federal Home Loan Bank are summarized as follows: 2015 2014 Weighted Weighted Average Average Total Contractual Total Contractual Outstanding Rate Outstanding Rate (Dollars in thousands) Stated Maturity 2015 $ — — % $ 38,001 0.69 % 2016 52,025 2.26 % — — % 2017 40,154 3.10 % 31,203 4.03 % 2018 7,043 1.75 % — — % 2019 2,011 1.99 % — — % Subtotal 101,233 2.53 % 69,204 2.20 % Amortizing advances 847 876 Total Federal Home Loan Bank Advances $ 102,080 $ 70,080 To manage the interest rate risk of these advances, the Company has entered into interest rate swaps, effectively converting $25.0 million of the FHLB advances to fixed interest rates at December 31, 2015 and 2014 . This swap carried a weighted average interest rate of 2.94% at December 31, 2015 and 2014 , and will mature in December 2018. In June 2014, the Company terminated $75.0 million in swaps that matured in 2014 and 2015, resulting in a loss on termination of approximately $1.1 million , which is included in other noninterest expense for 2014. During 2013 the Company prepaid $60.0 million of these advances assumed as part of the acquisition of Central Bancorp, Inc. ("Central"). The difference between the exit price and the net carrying amount of the debt resulted in a gain on extinguishment of debt of $763,000 . The Company’s FHLB advances are collateralized by a blanket pledge agreement on the Bank’s FHLB stock, certain qualified investment securities, deposits at the Federal Home Loan Bank, and by residential mortgages, and certain commercial real estate loans held in the Bank’s portfolio. The carrying value of the loans pledged as collateral for these borrowings totaled $1.4 billion and $1.3 billion as of December 31, 2015 and 2014 . The Bank’s unused remaining available borrowing capacity at the Federal Home Loan Bank was approximately $777.5 million and $755.7 million at December 31, 2015 and 2014 , respectively, inclusive of a $5.0 million line of credit. At December 31, 2015 and 2014 , the Company had sufficient collateral at the FHLB to support its obligations and was in compliance with the FHLB's collateral pledging program. Short-Term Debt The Company’s short-term borrowings consisted of customer repurchase agreements that amounted to $134.0 million and $147.9 million at December 31, 2015 and 2014, respectively. The interest expense on short-term borrowings was $210,000 , $200,000 , and $276,000 for the years ended December 31, 2015 , 2014 , and 2013 , respectively. Customer Repurchase Agreements . The Company can raise additional liquidity by entering into repurchase agreements at it discretion. In a security repurchase agreement transaction, the Company will generally sell a security, agreeing to repurchase either the same or substantially the same security on a specified later date, at a price greater than the original sales price. The difference between the sale price and purchase price is the cost of the proceeds, which is recorded as interest expense. Since the securities are treated as collateral and the agreement does not qualify for a full transfer of effective control, the transactions do not meet the criteria to be classified as a sale, and are therefore considered a secured borrowing transaction for accounting purposes. Payments on such borrowings are interest only until the scheduled repurchase date. In a repurchase agreement the Company is subject to the risk that the purchaser may default at maturity and not return the securities underlying the agreements. In order to minimize this potential risk, the Company's agreement with customers stipulates that the securities underlying the agreement are not delivered to the customer and instead are held in segregated safekeeping accounts by the Company's safekeeping agents. The table below sets forth information regarding the Company’s repurchase agreements allocated by source of collateral at the date indicated: December 31, 2015 Remaining Contractual Maturity of the Agreements Overnight and Continuous Up to 30 Days 30-90 Days Greater than 90 Days Total (Dollars in thousands) Sources of Collateral U.S. government agency securities $ 10,157 $ — $ — $ — $ 10,157 Agency mortgage-backed securities 69,142 — — — 69,142 Agency collateralized mortgage obligations 54,659 — — — 54,659 Total borrowings $ 133,958 $ — $ — $ — $ 133,958 Certain counterparties monitor collateral, and may request additional collateral to be posted from time to time. For further information regarding the Company's repurchase agreements see Note 12 , Balance Sheet Offsetting . Line of Credit Borrowings . The revolving line of credit was an obligation of the parent company which accrued interest at an adjusted LIBOR rate. The line of credit provided for borrowings of up to $20.0 million (increased from $10.0 million with a 2014 amendment) and matured on November 18, 2015. There are currently no outstanding line of credits as of December 31, 2015 . Long-Term Debt The following table summarizes long-term debt as of the periods indicated: December 31 2015 2014 (Dollars in thousands) Wholesale repurchase agreements $ — $ 50,000 Junior subordinated debentures Capital Trust V 51,547 51,547 Slades Ferry Trust I 10,310 10,310 Central Trust I 5,258 5,258 Central Trust II 6,349 6,570 Subordinated debentures 35,000 65,000 Total long-term debt $ 108,464 $ 188,685 The interest expense on long-term debt was $6.6 million , $6.4 million , and $7.0 million for the years ended December 31, 2015 , 2014 , and 2013 , respectively. Wholesale Repurchase Agreements : In a wholesale security repurchase agreement with established firms, the Bank will generally sell a security, agreeing to repurchase either the same or substantially the same security on a specified later date, at a price greater than the original sales price. The securities underlying these agreements are primarily U.S. Government agency mortgage-backed securities, which are delivered to broker/dealers. The were no investments pledged against wholesale repurchase agreements at December 31, 2015 and $52.9 million at December 31, 2014 . The one outstanding wholesale repurchase agreement, which had a fixed interest rate of 2.32% , matured on August 23, 2015. Junior Subordinated Debentures : The junior subordinated debentures are issued to various trust subsidiaries of the Company. These trusts are considered to be variable interest entities for which the Company is not the primary beneficiary, and therefore the accounts of the trusts are not included in the Company’s consolidated financial statements. These trusts were formed for the purpose of issuing trust preferred securities, which were then sold in a private placement offering. The proceeds from the sale of the securities and the issuance of common stock by these trusts were invested in these Junior Subordinated Debentures issued by the Company. For regulatory purposes, bank holding companies are allowed to include trust preferred securities in Tier 1 capital up to a certain limit. Provisions in the Dodd-Frank Act generally exclude trust preferred securities from Tier 1 capital, however, holding companies with consolidated assets of less than $15 billion, such as the Company, are able to continue to include these instruments in Tier 1 capital, but no such securities issued in the future will count as Tier 1 capital. Information relating to these trust preferred securities are as follows: Trust Description of Capital Securities Capital Trust V $50.0 million due in 2037, interest at a variable rate (LIBOR plus 1.48%), which has been effectively converted to a fixed rate of 6.52% until December 28, 2016, through the use of an interest rate swap. These securities are callable quarterly, until maturity. Slades Ferry Trust I $10.0 million due in 2034, bearing interest at a variable rate (LIBOR plus 2.79%). These securities are callable quarterly, until maturity. Central Trust I $5.1 million due in 2034, bearing interest at a variable rate (LIBOR plus 2.44%). These securities are callable quarterly, until maturity. Central Trust II $5.9 million due in 2037, bearing a fixed interest rate of 7.015% until March 15, 2017. Subsequent to this date, the interest will be variable (LIBOR plus 1.65%) and the securities will become callable quarterly, until maturity. All obligations under these trust preferred securities are unconditionally guaranteed by the Company. Subordinated Debentures : In the first quarter of 2015, the Bank redeemed $30.0 million of subordinated debt that had an original maturity of October 1, 2019, without penalty. The interest rate at the time of redemption was floating rate of LIBOR plus 3.00% . The subordinated debentures were issued to USB Capital Resources, Inc., a wholly-owned subsidiary of U.S. Bank National Association. At December 31, 2015 and 2014 there was $35.0 million of outstanding subordinated debentures at the bank holding company. The subordinated debentures were issued to several investors via private placement on November 17, 2014. The subordinated debt matures on November 15, 2024, however with regulatory approval, the Bank may redeem the subordinated debt without penalty at any scheduled payment date on or after November 15, 2019 with 30 days notice. The interest rate is fixed at 4.75% through November 15, 2019, after which it converts to LIBOR plus 2.98% . The following table sets forth the contractual maturities of long-term debt over the next five years: 2016 2017 2018 2019 2020 Thereafter Total (Dollars in thousands) Junior subordinated debentures Capital trust V $ — $ — $ — $ — $ — $ 51,547 $ 51,547 Slades ferry trust I $ — $ — $ — $ — $ — $ 10,310 $ 10,310 Central trust I $ — $ — $ — $ — $ — $ 5,258 $ 5,258 Central trust II $ — $ — $ — $ — $ — $ 6,349 $ 6,349 Subordinated debentures $ — $ — $ — $ — $ — $ 35,000 $ 35,000

EARNINGS PER SHARE

EARNINGS PER SHARE	12 Months Ended
	Dec. 31, 2015
Earnings Per Share [Abstract]
EARNINGS PER SHARE	Earnings per share consisted of the following components for the years ended December 31: 2015 2014 2013 (Dollars in thousands, except share and per share data) Net income $ 64,960 $ 59,845 $ 50,254 Weighted Average Shares Basic shares 25,891,382 23,899,562 23,011,814 Effect of dilutive securities 68,566 93,815 76,764 Diluted shares 25,959,948 23,993,377 23,088,578 Net income per share Basic EPS $ 2.51 $ 2.50 $ 2.18 Effect of dilutive securities (0.01 ) (0.01 ) — Diluted EPS $ 2.50 $ 2.49 $ 2.18 The following table illustrates the options to purchase common stock and the shares of performance-based restricted stock that were excluded from the calculation of diluted earnings per share because they were anti-dilutive: December 31 2015 2014 2013 Stock options — — 124,608 Performance-based restricted stock — — —

STOCK BASED COMPENSATION

STOCK BASED COMPENSATION	12 Months Ended
	Dec. 31, 2015
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
STOCK BASED COMPENSATION	The Company's stock based plans include the Second Amended and Restated 2005 Employee Stock Plan (“2005 Plan”) and the 2010 Nonemployee Director Stock Plan (“2010 Plan”) both of which have been approved by the Company’s Board of Directors and shareholders. The following table presents the amount of cumulatively granted stock options and restricted stock awards, net of forfeitures, through December 31, 2015 : Authorized Authorized Total Cumulative Granted, Net of Total Authorized Stock Restricted 2005 Plan (1) (1) 1,650,000 537,941 593,297 1,131,238 518,762 2010 Plan (2) (2) 314,600 27,000 76,820 103,820 210,780 (1) The Company may award up to a total of 1,650,000 shares as stock options or restricted stock awards. (2) The Company may award up to a total of 314,600 shares as stock options or restricted stock awards, inclusive of 14,600 shares which were transferred from the previous 2006 Nonemployee Director Stock Plan. The Company issues shares for stock option exercises and restricted stock awards from its pool of authorized but unissued shares. The following table presents the pre-tax expense associated with stock option and restricted stock awards and the related tax benefits recognized for the years presented: Years Ended December 31 2015 2014 2013 (Dollars in thousands) Stock based compensation expense Stock options $ — $ 36 $ 241 Restricted stock awards(1) 2,295 2,135 1,906 Directors’ fee expense Stock options — 14 27 Restricted stock awards 194 527 288 Total stock based award expense $ 2,489 $ 2,712 $ 2,462 Related tax benefits recognized in earnings $ 1,122 $ 945 $ 832 (1) Inclusive of compensation expense associated with time-vested and performance-based restricted stock awards. Expense related to awards issued to directors are recognized as directors’ fees within other noninterest expense. The Company has standard form agreements used for stock option and restricted stock awards. The standard form agreements used for the Chief Executive Officer and all other Executive Officers have previously been disclosed in Securities and Exchange Commission filings and generally provide that: (1) any unvested options or unvested restricted stock vest upon a Change of Control; and, that (2) any stock options which vest pursuant to a Change of Control, which is an event described in Section 280G of the Internal Revenue Code of 1986, will be cashed out at the difference between the acquisition price and the exercise price of the stock option. Stock Options The fair value of each option grant is estimated on the date of the grant using the Black-Scholes option-pricing model with the following assumptions used for grants under the identified plans: • Expected volatility is based on the standard deviation of the historical volatility of the weekly adjusted closing price of the Company’s shares for a period equivalent to the expected life of the option. • Expected life represents the period of time that the option is expected to be outstanding, taking into account the contractual term, historical exercise/forfeiture behavior, and the vesting period, if any. • Expected dividend yield is an annualized rate calculated using the most recent dividend payment at time of grant and the Company’s average trailing twelve-month daily closing stock price. • The risk-free rate is based on the U.S. Treasury yield curve in effect at the time of grant for a period equivalent to the expected life of the option. • The stock based compensation expense recognized in earnings should be based on the amount of awards ultimately expected to vest, therefore a forfeiture assumption is estimated at the time of grant and revised, if necessary, in subsequent periods if actual forfeitures differ from those estimates. Stock based compensation expense recognized has been reduced for annualized estimated forfeitures of 4.5% in 2015 and by 3.5% in 2014 and 2013 based on historical experience. The Company made the following awards of nonqualified options to purchase shares of common stock in 2013. There were no such awards made in 2015 or 2014 . Year Ended December 31 2013 Date of grant 11/9/2013 Plan 2010 Options granted 5,000 Vesting period (1) 13 months Expiration date 11/9/2023 Expected volatility 31.23 % Expected life (years) 5.5 Expected dividend yield 2.64 % Risk free interest rate 1.56 % Fair value per option $ 8.13 (1) Vesting periods begin on the grant date. Under all of the Company’s stock based plans, the option exercise price is based upon the average of the high and low trading value of the stock on the date of grant. Stock option awards granted to date under all plans expire through 2023 . The following table presents relevant information relating to the Company’s stock options for the periods indicated: Years Ended December 31 2015 2014 2013 (Dollars in thousands) Fair value of stock options vested based on grant date fair value $ 14 $ 211 $ 430 Intrinsic value of stock options exercised $ 3,362 $ 1,210 $ 1,051 Cash received from stock option exercises $ 6,105 $ 6,285 $ 2,475 Tax benefit realized on stock option exercises/repurchase $ 1,362 $ 442 $ 322 Weighted average grant date fair value of options granted (per share) $ — $ — $ 8.13 A summary of stock option activity of the Company’s Stock Option Grants for the year ended December 31, 2015 is presented in the table below: Outstanding Nonvested Stock Option Weighted Weighted Aggregate Stock Weighted (Dollars in thousands, except per share data) Balance at January 1, 2015 330,751 $ 29.36 1,666 $ 8.13 Granted — — — — Exercised (205,516 ) 29.71 n/a n/a Vested n/a n/a (1,666 ) 8.13 Forfeited — — — — Expired (3,335 ) 30.16 — — Balance at December 31, 2015 121,900 (2) $ 28.76 3.11 years $ 2,216 — $ — Options outstanding and expected to vest at December 31, 2015 121,900 (2) $ 28.76 3.11 years $ 2,216 Options exercisable at December 31, 2015 121,900 (2) $ 28.76 3.11 years $ 2,216 Unrecognized compensation cost, including forfeiture estimate $ — Weighted average remaining recognition period (years) n/a (1) The aggregate intrinsic value in the preceding tables represents the total pre-tax intrinsic value, based on the average of the high price and low price at which the Company’s common stock traded on December 31, 2015 of $46.94 , which would have been received by the option holders had they all exercised their options as of that date. (2) Inclusive of 24,000 stock options outstanding and expected to vest to Directors. Restricted Stock The Company grants both time-vested restricted stock awards as well as performance-based restricted stock awards. During the years ended December 31, 2015 , 2014 , and 2013 the Company has made the following restricted stock award grants: Shares Granted Plan Fair Value (1) Vesting Period Time-vested 2015 2/11/2015 31,500 2005 $ 39.42 Ratably over 5 years from grant date 2/12/2015 25,910 2005 $ 40.03 Ratably over 5 years from grant date 3/19/2015 3,800 2005 $ 43.56 Ratably over 5 years from grant date 4/27/2015 625 2005 $ 41.61 At the end of 3 years from grant date 4/27/2015 1,875 2005 $ 41.61 At the end of 5 years from grant date 5/27/2015 8,800 2010 $ 45.02 At the end of 5 years from grant date (2) 7/14/2015 800 2010 $ 47.82 Once on May 27, 2020 (3) 10/13/2015 1,000 2005 $ 46.09 Ratably over 5 years from grant date 10/20/2015 2,000 2005 $ 46.47 Ratably over 5 years from grant date 2014 3/20/2014 65,950 2005 $ 39.82 Ratably over 5 years from grant date 3/31/2014 3,000 2005 $ 39.00 Ratably over 3 years from grant date 5/20/2014 10,920 2010 $ 35.08 At the end of 5 years from grant date (2) 11/20/2014 2,000 2005 $ 39.11 Ratably over 5 years from grant date 12/11/2014 2,000 2005 $ 40.89 Ratably over 5 years from grant date 2013 1/16/2013 2,000 2005 $ 30.48 Ratably over 3 years from grant date 2/14/2013 93,800 2005 $ 31.51 Ratably over 5 years from grant date 5/21/2013 14,700 2010 $ 33.17 At the end of 5 years from grant date (2) Performance-based 2015 2/12/2015 21,780 2005 $ 40.03 On February 12, 2018, if performance conditions are met 2014 3/20/2014 20,700 2005 $ 39.82 On March 20, 2017, if performance conditions are met (1) The fair value of the restricted stock awards are based upon the average of the high and low prices at which the Company’s common stock traded on the date of grant. The holders of time-vested restricted stock awards participate fully in the rewards of stock ownership of the Company, including voting and dividend rights. The holders of performance-based restricted stock awards do not participate in the rewards of stock ownership of the Company until vested. The holders of all restricted stock awards are not required to pay any consideration to the Company for the awards. (2) These restricted stock grants will vest at the end of a five year period, or earlier if the director ceases to be a director for any reason other than cause, such as, for example, by retirement. If a non-employee director is removed from the Board for cause, the Company has ninety ( 90 ) days within which to exercise a right to repurchase any unvested portion of any restricted stock award from the non-employee director for the aggregate price of one dollar ( $1.00 ). (3) These restricted stock grants will vest on May 27, 2020, or earlier if the director ceases to be a director for any reason other than cause, such as, for example, by retirement. If a non-employee director is removed from the Board for cause, the Company has ninety ( 90 ) days within which to exercise a right to repurchase any unvested portion of any restricted stock award from the non-employee director for the aggregate price of one dollar ( $1.00 ). The following table presents the fair value of restricted stock awards vesting during the periods presented: Years Ended December 31 2015 2014 2013 (Dollars in thousands) Fair value of restricted stock awards upon vesting $ 2,610 $ 3,293 $ 3,289 A summary of the status of the Company’s Restricted Stock Award Grants for the year ended December 31, 2015 is presented in the table below: Outstanding Restricted Stock Weighted Average (Dollars in thousands, except per share data) Balance at January 1, 2015 276,527 $ 33.15 Granted 98,090 40.71 Vested/released (63,437 ) 31.47 Forfeited (46,236 ) 35.02 Balance at December 31, 2015 264,944 (1) $ 36.03 Unrecognized compensation cost (inclusive of directors’ fees), including forfeiture estimate $ 6,351 Weighted average remaining recognition period (years) 2.97 (1) Inclusive of 44,200 restricted stock awards outstanding to Directors.

DERIVATIVES AND HEDGING ACTIVIT

DERIVATIVES AND HEDGING ACTIVITIES	12 Months Ended
	Dec. 31, 2015
Derivative Instruments and Hedging Activities Disclosure [Abstract]
DERIVATIVES AND HEDGING ACTIVITIES	e Company’s derivative financial instruments are used to manage differences in the amount, timing, and duration of the Company’s known or expected cash receipts and its known or expected cash payments principally to manage the Company’s interest rate risk. Additionally, the Company enters into interest rate derivatives and foreign exchange contracts to accommodate the business requirements of its customers (“customer related positions”). The Company minimizes the market and liquidity risks of customer related positions by entering into similar offsetting positions with broker-dealers. Derivative instruments are carried at fair value in the Company’s financial statements. The accounting for changes in the fair value of a derivative instrument is dependent upon whether or not it qualifies as a hedge for accounting purposes, and further, by the type of hedging relationship. The Company does not enter into proprietary trading positions for any derivatives. Interest Rate Positions The Company currently utilizes interest rate swap agreements as hedging instruments against interest rate risk associated with the Company’s borrowings. An interest rate swap is an agreement whereby one party agrees to pay a floating rate of interest on a notional principal amount in exchange for receiving a fixed rate of interest on the same notional amount, for a predetermined period of time, from a second party. The amounts relating to the notional principal amount are not actually exchanged. The maximum length of time over which the Company is currently hedging its exposure to the variability in future cash flows for forecasted transactions related to the payment of variable interest on existing financial instruments is three years. The following table reflects the Company’s derivative positions for the periods indicated below for interest rate swaps which qualify as cash flow hedges for accounting purposes: December 31, 2015 Notional Trade Effective Maturity Receive Current Pay Fixed Fair Value (Dollars in thousands) $ 25,000 16-Feb-06 28-Dec-06 28-Dec-16 3 Month LIBOR 0.51 % 5.04 % $ (1,054 ) 25,000 16-Feb-06 28-Dec-06 28-Dec-16 3 Month LIBOR 0.51 % 5.04 % (1,055 ) 25,000 9-Dec-08 10-Dec-08 10-Dec-18 3 Month LIBOR 0.49 % 2.94 % (1,164 ) $ 75,000 $ (3,273 ) December 31, 2014 Notional Trade Effective Maturity Receive Current Pay Fixed Fair Value (Dollars in thousands) $ 25,000 16-Feb-06 28-Dec-06 28-Dec-16 3 Month LIBOR 0.24 % 5.04 % $ (2,093 ) 25,000 16-Feb-06 28-Dec-06 28-Dec-16 3 Month LIBOR 0.24 % 5.04 % (2,094 ) 25,000 9-Dec-08 10-Dec-08 10-Dec-18 3 Month LIBOR 0.24 % 2.94 % (1,383 ) $ 75,000 $ (5,570 ) For derivative instruments that are designated and qualify as cash flow hedging instruments, the effective portion of the gains or losses is reported as a component of other comprehensive income ("OCI"), and is subsequently reclassified into earnings in the period that the hedged forecasted transaction affects earnings. The Company expects approximately $2.4 million (pre-tax) to be reclassified to interest expense from OCI, related to the Company’s cash flow hedges, in the next twelve months. This reclassification is due to anticipated payments that will be made and/or received on the swaps based upon the forward curve as of December 31, 2015 . The Company recognized $244,000 of net amortization income that was an offset to interest expense related to previously terminated swaps for the years ended December 31, 2015 , 2014 and 2013 . In June 2014, the Company repaid certain borrowings and consequently terminated the corresponding cash flow hedges. As a result of the termination of the cash flow hedges, the Company reclassified a pre-tax loss of approximately $1.1 million out of OCI and into other noninterest expense. The Company had no fair value hedges as of December 31, 2015 , 2014 , and 2013 . Customer Related Positions Loan level derivatives, primarily interest rate swaps, offered to commercial borrowers through the Company’s loan level derivative program do not qualify as hedges for accounting purposes. The Company believes that its exposure to commercial customer derivatives is limited because these contracts are simultaneously matched at inception with an offsetting dealer transaction. The commercial customer derivative program allows the Company to retain variable-rate commercial loans while allowing the customer to synthetically fix the loan rate by entering into a variable-to-fixed interest rate swap. Foreign exchange contracts offered to commercial borrowers through the Company’s derivative program do not qualify as hedges for accounting purposes. The Company acts as a seller and buyer of foreign exchange contracts to accommodate its customers. To mitigate the market and liquidity risk associated with these derivatives, the Company enters into similar offsetting positions. The following table reflects the Company’s customer related derivative positions for the periods indicated below for those derivatives not designated as hedging: Number of Notional Amount Maturing Less than 1 year Less than 2 years Less than 3 years Less than 4 years Thereafter Total Fair Value December 31, 2015 (Dollars in thousands) Loan level derivatives Receive fixed, pay variable 171 $ 37,732 $ 34,424 $ 29,629 $ 77,041 $ 488,110 $ 666,936 $ 22,467 Pay fixed, receive variable 165 $ 37,732 $ 34,424 $ 29,629 $ 77,041 $ 488,110 $ 666,936 $ (22,462 ) Foreign exchange contracts Buys foreign currency, sells U.S. currency 21 $ 38,416 $ — $ — $ — $ — $ 38,416 $ (354 ) Buys U.S. currency, sells foreign currency 21 $ 38,416 $ — $ — $ — $ — $ 38,416 $ 382 December 31, 2014 (Dollars in thousands) Loan level derivatives Receive fixed, pay variable 174 $ 88,147 $ 46,854 $ 40,958 $ 38,108 $ 403,208 $ 617,275 $ 17,840 Pay fixed, receive variable 168 $ 88,147 $ 46,854 $ 40,958 $ 38,108 403,208 $ 617,275 $ (17,837 ) Foreign exchange contracts Buys foreign currency, sells U.S. currency 23 $ 57,112 $ — $ — $ — $ — $ 57,112 $ (3,984 ) Buys U.S. currency, sells foreign currency 23 $ 57,112 $ — $ — $ — $ — $ 57,112 $ 4,007 (1) The Company may enter into one dealer swap agreement which offsets multiple commercial borrower swap agreements. Mortgage Derivatives Prior to closing and funding certain 1- 4 family residential mortgage loans, an interest rate lock commitment is generally extended to the borrower. During the period from commitment date to closing date, the Company is subject to the risk that market rates of interest may change. If market rates rise, investors generally will pay less to purchase such loans resulting in a reduction in the gain on sale of the loans or, possibly, a loss. In an effort to mitigate such risk, forward delivery sales commitments are executed, under which the Company agrees to deliver whole mortgage loans to various investors. In addition, the Company may also enter into additional forward To Be Announced ("TBA") mortgage contracts, also considered derivative instruments, which are purchased by the Company from a diversified list of counterparties in order to hedge customer rate locks. These forward contracts carry a market price that has a strong inverse relationship to that of mortgage prices. When the Company locks a rate to the customer, the rate can be held for the benefit of the customer for a certain period of time until the mortgage is sold. During that time, the Company may not have agreed on a price with a mortgage investor and fluctuations in market conditions may cause the mortgage to lose market value. Within a short period after the rate is locked with the customer, the Company may, depending upon the effectiveness of existing economic hedges, execute a forward TBA trade with a counterparty to economically hedge that market risk. Certain assumptions, including pull through rates and rate lock periods, are used in managing the existing and future economic hedges. The effectiveness of the economic hedges rely on the accuracy of these assumptions. The change in fair value on the interest rate lock commitments, forward delivery sale commitments, and forward TBA mortgage contracts are recorded in current period earnings as a component of mortgage banking income. In addition, the Company has elected the fair value option to carry loans held for sale at fair value. The change in fair value of loans held for sale is recorded in current period earnings as a component of mortgage banking income in accordance with the Company's fair value election. The change in fair value associated with loans held for sale was a decrease of $22,000 and an increase of $18,000 for the years ended December 31 , 2015 and 2014 , respectively. There was no change in the fair value for the year ended December, 31 2013 . These amounts were offset in earnings by the change in the fair value of mortgage derivatives. Additionally, the aggregate amount of gains or losses on sales of such loans included within mortgage banking income amounted to $4.7 million , $3.0 million , and $2.8 million for the years ended December 31, 2015 , 2014 and 2013 , respectively. The table below presents the fair value of the Company’s derivative financial instruments as well as their classification on the balance sheet at the periods indicated: Asset Derivatives Liability Derivatives Fair Value at Fair Value at Fair Value at Fair Value at Balance Sheet December 31, 2015 December 31, 2014 Balance Sheet December 31, 2015 December 31, 2014 (Dollars in thousands) Derivatives designated as hedges Interest rate derivatives Other assets $ — $ — Other liabilities $ 3,273 $ 5,570 Derivatives not designated as hedges Customer Related Positions: Loan level derivatives Other assets 22,470 18,383 Other liabilities 22,465 18,380 Foreign exchange contracts Other assets 602 4,007 Other liabilities 574 3,984 Mortgage Derivatives Interest rate lock commitments Other assets 233 295 Other liabilities — — Forward TBA mortgage contracts Other assets — — Other liabilities — 16 Forward sales agreements Other assets — 3 Other liabilities 1 — Subtotal 23,305 22,688 23,040 22,380 Total $ 23,305 $ 22,688 $ 26,313 $ 27,950 The table below presents the effect of the Company’s derivative financial instruments included in OCI and current earnings for the periods indicated: Years Ended December 31 2015 2014 2013 (Dollars in thousands) Derivatives designated as hedges Gain in OCI on derivatives (effective portion), net of tax $ 1,199 $ 2,256 $ 3,735 Loss reclassified from OCI into interest expense (effective portion) $ (2,828 ) $ (3,662 ) $ (5,723 ) Loss reclassified from OCI into noninterest expense (loss on termination) $ — $ (1,122 ) $ — Loss recognized in income on derivatives (ineffective portion and amount excluded from effectiveness testing) Interest expense $ — $ — $ — Other expense — — — Total $ — $ — $ — Derivatives not designated as hedges Changes in fair value of customer related positions Other income $ 60 $ 63 $ 38 Other expenses (53 ) (4 ) (116 ) Changes in fair value of mortgage derivatives Mortgage banking income (50 ) 49 354 Total $ (43 ) $ 108 $ 276 By using derivatives, the Company is exposed to credit risk to the extent that counterparties to the derivative contracts do not perform as required. Should a counterparty fail to perform under the terms of a derivative contract, the Company’s credit exposure on interest rate swaps is limited to the net positive fair value and accrued interest of all swaps with each counterparty. The Company seeks to minimize counterparty credit risk through credit approvals, limits, monitoring procedures, and obtaining collateral, where appropriate. Institutional counterparties must have an investment grade credit rating and be approved by the Company’s Board of Directors. As such, management believes the risk of incurring credit losses on derivative contracts with those counterparties is remote and losses, if any, would be immaterial. The Company had $2,000 and $272,000 in exposure relating to institutional counterparties at December 31, 2015 and 2014 , respectively. The Company’s exposure relating to customer counterparties was approximately $23.2 million and $18.9 million at December 31, 2015 and 2014 , respectively. Credit exposure may be reduced by the amount of collateral pledged by the counterparty.

BALANCE SHEET OFFSETTING

BALANCE SHEET OFFSETTING	12 Months Ended
	Dec. 31, 2015
Offsetting [Abstract]
Balance Sheet Offsetting Disclosure [Text Block]	The following tables present the Company's asset and liability derivative positions and the potential effect of netting arrangements on its financial position, as of the periods indicated: Gross Amounts Not Offset in the Statement of Financial Position Gross Amounts Recognized Gross Amounts Offset in the Statement of Financial Position Net Amounts Presented in the Statement of Financial Position Financial Instruments (1) Collateral Pledged Net Amount December 31, 2015 (Dollars in thousands) Derivative Assets Loan level derivatives $ 22,470 $ — $ 22,470 $ 2 $ — $ 22,468 Customer foreign exchange contracts 602 — 602 — — 602 $ 23,072 $ — $ 23,072 $ 2 $ — $ 23,070 Derivative Liabilities Interest rate swaps $ 3,273 $ — $ 3,273 $ — $ 3,273 $ — Loan level derivatives 22,465 — 22,465 2 22,461 2 Customer foreign exchange contracts 574 — 574 — — 574 Repurchase agreements Customer repurchase agreements 133,958 — 133,958 — 133,958 — $ 160,270 $ — $ 160,270 $ 2 $ 159,692 $ 576 (1) Reflects offsetting derivative positions with the same counterparty. Gross Amounts Not Offset in the Statement of Financial Position Gross Amounts Recognized Gross Amounts Offset in the Statement of Financial Position Net Amounts Presented in the Statement of Financial Position Financial Instruments (1) Collateral Pledged Net Amount December 31, 2014 (Dollars in thousands) Derivative Assets Loan level swaps $ 18,383 $ — $ 18,383 $ 272 $ — $ 18,111 Customer foreign exchange contracts 4,007 — 4,007 — — 4,007 $ 22,390 $ — $ 22,390 $ 272 $ — $ 22,118 Derivative Liabilities Interest rate swaps $ 5,570 $ — $ 5,570 $ — $ 5,570 $ — Loan level derivatives 18,380 — 18,380 272 17,836 272 Customer foreign exchange contracts 3,984 — 3,984 — — 3,984 Repurchase agreements Customer repurchase agreements 147,890 — 147,890 — 147,890 — Wholesale repurchase agreements 50,000 — 50,000 — 50,000 — $ 225,824 $ — $ 225,824 $ 272 $ 221,296 $ 4,256 (1) Reflects offsetting derivative positions with the same counterparty.

INCOME TAXES

INCOME TAXES	12 Months Ended
	Dec. 31, 2015
Income Tax Disclosure [Abstract]
INCOME TAXES	INCOME TAXES The provision for income taxes is comprised of the following components: Years Ended December 31 2015 2014 2013 (Dollars in thousands) Current expense Federal $ 11,946 $ 14,709 $ 9,570 State 5,052 6,350 4,357 Total current expense 16,998 21,059 13,927 Deferred expense (benefit) Federal 8,466 2,877 1,598 State 1,754 (37 ) 959 Total deferred expense (benefit) 10,220 2,840 2,557 Total expense $ 27,218 $ 23,899 $ 16,484 The difference between the statutory federal income tax rate of 35% and the effective income tax rate reported for the last three years is detailed below: Years Ended December 31 2015 2014 2013 (Dollars in thousands) Computed statutory federal income tax provision $ 32,262 35.00 % $ 29,310 35.00 % $ 23,359 35.00 % State taxes, net of federal tax benefit 4,500 4.88 % 4,104 4.90 % 3,455 5.17 % Nontaxable interest, net (973 ) (1.06 )% (795 ) (0.95 )% (557 ) (0.83 )% New Markets Tax Credits (6,514 ) (7.07 )% (6,708 ) (8.01 )% (9,000 ) (13.48 )% Low Income Housing Project Investments (1,182 ) (1.28 )% (594 ) (0.71 )% (194 ) (0.29 )% Increase in cash surrender value of life insurance and tax exempt gain on benefit payments (1,292 ) (1.40 )% (1,782 ) (2.13 )% (1,209 ) (1.81 )% Merger and other related costs (non-deductible) 185 0.20 % 274 0.33 % 366 0.55 % Change in valuation allowance 41 0.04 % — — % — — % Other, net 191 0.22 % 90 0.11 % 264 0.39 % Total expense $ 27,218 29.53 % $ 23,899 28.54 % $ 16,484 24.70 % The tax-effected components of the net deferred tax asset at December 31 were as follows: 2015 2014 (Dollars in thousands) Deferred tax assets Accrued expenses not deducted for tax purposes $ 14,621 $ 10,997 Allowance for loan losses 22,744 22,462 Deferred gain on sale leaseback transaction 2,158 2,579 Derivatives fair value adjustment 1,033 1,882 Employee and director equity compensation 2,466 2,380 Federal Home Loan Bank borrowings fair value adjustment 108 83 Loan basis difference fair value adjustment 3,789 2,094 Net operating loss carry-forward 41 213 New Markets Tax Credit carry-forward 459 521 Other-than-temporary impairment on securities — 4,072 Other 451 2,141 Gross deferred tax assets 47,870 49,424 Valuation allowance (41 ) — Total deferred tax assets net of valuation allowance $ 47,829 $ 49,424 Deferred tax liabilities Core deposit and other intangibles $ 3,785 $ 3,194 Deferred loan fees, net 4,872 4,164 Fixed assets 7,269 4,875 Goodwill 14,576 14,194 Net unrealized gain on securities available for sale 805 2,074 Other 2,468 2,210 Total $ 33,775 $ 30,711 Total net deferred tax asset $ 14,054 $ 18,713 Deferred tax assets are to be reduced by a valuation allowance if, based on the weight of available evidence, it is more likely than not that some portion or all of the deferred tax assets will not be realized. The realization of the tax benefit depends upon the existence of sufficient taxable income within the carry-back and future periods. The Company believes that it is more likely than not that its deferred tax assets as of December 31, 2015, excluding the deferred tax asset on state net operating losses, will be realized through the utilization of carry-back provisions to taxable income on prior years, future reversals of existing taxable temporary differences and by offsetting other future taxable income. The Company believes it is more likely than not that the deferred tax asset related to state net operating losses generated from the Company's investments in low income housing partnerships, which expire over a 20-year period, will not be realized and has recorded a valuation allowance of $41,000 at December 31, 2015, attributable to this deferred tax asset. Uncertainty in Income Taxes From time to time, the Internal Revenue Service (the "IRS") may review and/or challenge specific tax positions taken by the Company in its ordinary course of business. The Company believes that its income tax returns have been filed based upon applicable statutes, regulations and case law in effect at the time of filing, however, the IRS could disagree with the Company's interpretation. The Company accounts for uncertainties in income taxes by providing a tax reserve for certain positions. The following is a reconciliation of the beginning and ending amount of unrecognized tax benefits: (Dollars in thousands) Balance at December 31, 2013 $ 55 Reduction of tax positions for prior years (55 ) Increase for prior year tax position — Increase for current year tax positions — Balance at December 31, 2014 $ — Reduction of tax positions for prior years — Increase for prior year tax positions — Increase for current year tax positions 81 Balance at December 31, 2015 $ 81 Increases to the Company's unrealized tax positions occur as a result of accruing for the unrecognized tax benefit as well the accrual of interest and penalties related to prior year positions. Decreases in the Company's unrealized tax positions occur as a result of the statute of limitation lapsing on prior year positions and/or settlements relating to outstanding positions. All of the Company’s unrecognized tax benefits, if recognized, would be recorded as a component of income tax expense therefore affecting the effective tax rate. The Company records interest and penalties related to uncertain tax positions in the provision for income taxes. The Company and its subsidiaries file income tax returns in the U.S. federal jurisdiction as well as in various states. The Company is subject to U.S. federal, state and local income tax examinations by tax authorities for the 2012 through 2014 tax years including any related income tax filings from its recent Bank acquisitions. The Company has utilized net operating loss carry forwards acquired from the Central and Peoples acquisitions that are subject to annual change in ownership limitations under Internal Revenue Code Section 382. In addition, the Company has a general business credit carry forward that resulted from 2015 operations that can be used to reduce future federal income tax. The general business credit carryforward of $459,000 will expire in 2035 . The Company anticipates utilizing these carry forwards prior to their expirations.

LOW INCOME HOUSING PROJECT INVE

LOW INCOME HOUSING PROJECT INVESTMENTS Low Income Housing Project Investments	12 Months Ended
	Dec. 31, 2015
Low Income Housing Project Investments [Abstract]
Investments in Low Income Housing Projects [Text Block]	LOW INCOME HOUSING PROJECT INVESTMENTS The Company has invested in low income housing projects that generate Low Income Housing Tax Credits (“LIHTC”) which provide the Company with tax credits and operating loss tax benefits over a period of approximately 15 years. None of the original investment is expected to be repaid. The investment in LIHTC projects is being accounted for using the proportional amortization method, under which the Company amortizes the initial cost of the investment in proportion to the amount of the tax credits and other tax benefits received and recognizes the net investment benefit in the income statement as a component of income tax expense (benefit). The following table presents certain information related to the Company's investments in low income housing projects as of December 31 : 2015 2014 (Dollars in thousands) Original investment value $ 42,199 $ 40,541 Current recorded investment $ 38,151 $ 38,943 Unfunded liability obligation $ 14,607 $ 28,004 Tax credits and benefits earned during the year $ 3,632 $ 1,683 Amortization of investments during the year $ 2,450 $ 1,089 Net income tax benefit recognized during the year $ 1,182 $ 594

EMPLOYEE BENEFIT PLANS

EMPLOYEE BENEFIT PLANS	12 Months Ended
	Dec. 31, 2015
Compensation and Retirement Disclosure [Abstract]
EMPLOYEE BENEFIT PLANS	Pension The Company maintains a multiemployer defined benefit pension plan (the “Pension Plan”) administered by Pentegra Retirement Services (the “Fund” or “Pentegra Defined Benefit Plan for Financial Institutions”). The Fund does not segregate the assets or liabilities of all participating employers and accordingly, disclosure of plan assets, accumulated vested and nonvested benefits is not possible. Effective July 1, 2006, the Company froze the defined benefit plan by eliminating all future benefit accruals. Contributions to the Pension Plan are based on each individual employer’s experience. The Company bears the market risk relating to the Pension Plan and will continue to fund the Pension Plan as required. The Pension Plan year is July 1 st through June 30 th . In conjunction with the acquisition of Peoples Federal Savings Bank, the Company acquired the Peoples Federal Defined Benefit Pension Plan (“Peoples Plan”). The Peoples Plan was frozen at the date of acquisition and will be maintained in the same manner as the Pension Plan. The Peoples Plan is also administered by Pentegra Retirement Services under the same Fund as the Rockland Trust Plan. The Company’s participation in the Pension Plan and the Peoples Plan (the "Pension Plans") for the annual period ended December 31, 2015 , is outlined in the table below. The “EIN/Pension Plan Number” column provides the Employee Identification Number (“EIN”) and the three-digit plan number. The funding status of the Pension Plans is determined on the basis of the financial statements provided by the Fund using total plan assets and accumulated benefit obligation. The “FIP/RP Status Pending/Implemented” column indicates plans for which a financial improvement plan (“FIP”) or a rehabilitation plan (“RP”) is either pending or has been implemented. The “Expiration Date of Collective-Bargaining Agreement” column lists the expiration dates of any collective-bargaining agreement(s) to which the Pension Plans are subject. Funding Status FIP/RP Status Surcharge Expiration Minimum EIN/Pension 2015 2014 Pentegra defined benefit plan for financial institutions 13-5645888/333 At least 80 percent At least 80 percent No No N/A $ — Contributions to the Fund are based on each individual employer’s experience. The Company’s total contributions to the Pension Plans did not represent more than 5% of the total contributions to the Pension Plan as indicated in the Pension Plan’s most recently available annual report dated June 30, 2014. The comparability of employer contributions is impacted by asset performance, discount rates and the reduction in the number of covered employees year over year. The Company’s contributions to the Pension Plans were as follows for the periods indicated: Plan Year Allocation Cash Payment 2015-2016 2014-2015 2013-2014 2012-2013 (Dollars in thousands) 2015 $ 2,983 $ 2,983 $ — $ — $ — 2014 $ 1,320 $ — $ 1,320 $ — $ — 2013 $ 2,603 $ — $ — $ 1,762 $ 841 The Company’s total defined benefit plan expense was $1.6 million , $1.5 million , and $1.4 million , for the years ending December 31, 2015 , 2014 , and 2013 , respectively. Financial information for the Fund is made available through the public Form 5500 which is available by April 15 th of the year following the plan year end. Postretirement Benefit Plans Employees retiring from the Bank after attaining age 65 , who have rendered at least 10 years of continuous service are entitled to a fixed contribution toward the premium for postretirement health care benefits and a $5,000 benefit paid upon death. The health care benefits are subject to deductibles, co-payment provisions and other limitations. The Bank may amend or change these benefits periodically. Additionally, the Company has acquired small postretirement plans and/or agreements in conjunction with various acquisitions, which do not have a material impact on the amount of expense realized by the Company. The expense related to these plans for the years ending December 31, 2015 , 2014 , and 2013 was not material. Supplemental Executive Retirement Plans The Bank maintains defined benefit supplemental executive retirement plans (“SERP”) for certain highly compensated employees designed to offset the impact of regulatory limits on benefits under qualified pension plans. The Bank also maintains defined benefit SERPs acquired from previous acquisitions. The Bank has established and funded Rabbi Trusts to accumulate funds in order to satisfy the contractual liability of these supplemental retirement plan benefits. These agreements provide for the Bank to pay all benefits from its general assets, and the establishment of these trust funds does not reduce nor otherwise affect the Bank’s continuing liability to pay benefits from such assets except that the Bank’s liability shall be offset by actual benefit payments made from the trusts. The related trust assets, included in the Company's available for sale securities portfolio, totaled $10.0 million and $8.4 million at December 31, 2015 and 2014 , respectively. During 2014, the Company amended the retirement benefit amounts for certain participants. The Company then froze its defined benefit SERP by closing it to new participants and restricting future adjustments to the retirement benefit amounts. The following table shows the defined benefit supplemental retirement expense, and the contributions paid to the plans which were used only to pay the current year benefits as of the dates indicated: 2015 2014 2013 (Dollars in thousands) Retirement expense $ 1,834 $ 954 $ 1,049 Contributions paid $ 276 $ 271 $ 253 Expected future benefit payments for the defined benefit supplemental executive retirement plans are presented below: Defined Benefit Supplemental Executive (Dollars in thousands) 2016 $ 431 2017 $ 425 2018 $ 460 2019 $ 509 2020 $ 500 2021-2025 $ 4,348 The measurement date used to determine the defined benefit supplemental executive retirement plans benefits is December 31 for each of the years reported. The following table illustrates the status of the defined benefit supplemental executive retirement plans at December 31 for the years presented: Defined Benefit Supplemental Executive 2015 2014 2013 (Dollars in thousands) Change in accumulated benefit obligation Benefit obligation at beginning of year $ 12,537 $ 8,243 $ 8,714 Accumulated service cost 742 397 429 Interest cost 470 390 409 Plan amendment — 1,357 — Actuarial loss/(gain) (183 ) 2,421 (1,056 ) Benefits paid (276 ) (271 ) (253 ) Accumulated benefit obligation at end of year $ 13,290 $ 12,537 $ 8,243 Change in plan assets Fair value of plan assets at beginning of year $ — $ — $ — Employer contribution 276 271 253 Benefits paid (276 ) (271 ) (253 ) Fair value of plan assets at end of year $ — $ — $ — Funded status at end of year $ (13,290 ) $ (12,537 ) $ (8,243 ) Assets — — — Liabilities (13,290 ) (12,537 ) (8,243 ) Accrued benefit cost $ (13,290 ) $ (12,537 ) $ (8,243 ) Amounts recognized in accumulated other comprehensive income (“AOCI”) Net loss $ 2,859 $ 3,305 $ 938 Prior service cost 1,599 1,904 659 Amounts recognized in AOCI $ 4,458 $ 5,209 $ 1,597 Information for plans with an accumulated benefit obligation in excess of plan assets Projected benefit obligation $ 13,290 $ 12,537 $ 8,243 Accumulated benefit obligation $ 13,290 $ 12,537 $ 8,243 Net periodic benefit cost Service cost $ 742 $ 397 $ 429 Interest cost 470 390 409 Amortization of prior service cost 305 113 113 Recognized net actuarial loss 317 54 155 Net periodic benefit cost $ 1,834 $ 954 $ 1,106 Amounts in accumulated other comprehensive income expected to be recognized in net periodic benefit cost over next fiscal year Net actuarial loss $ 270 $ 309 $ 18 Net prior service cost $ 276 $ 947 $ 113 Discount rate used for benefit obligation 2.49-4.16% 2.24-3.84% 4.95 % Discount rate used for net periodic benefit cost 2.24-3.84% 2.43-4.76% 4.05 % Rate of compensation increase n/a n/a n/a Other Employee Benefits The Bank from time to time creates an incentive compensation plan for senior management and other officers to participate in at varying levels. In addition, the Bank may also pay a discretionary bonus to senior management, officers, and/or nonofficers of the Bank. The expense for the incentive plans and the discretionary bonus amounted to $10.3 million in 2015 and $8.5 million in both 2014 and 2013 . The Bank has an Employee Savings Plan that qualifies as a deferred salary arrangement under Section 401(k) of the Internal Revenue Code. Under the Employee Savings Plan, participating employees may defer a portion of their earnings, not to exceed the Internal Revenue Service annual contribution limits. The Bank matches 25% of each employee’s contributions up to 6% of the employee’s earnings. The 401(k) Plan incorporates an Employee Stock Ownership Plan for contributions invested in the Company’s common stock. This Plan also provides nondiscretionary contributions in which employees, with one year and 1,000 hours of service, receive a 5% cash contribution of eligible pay up to the social security limit and a 10% cash contribution of eligible pay over the social security limit up to the maximum amount permitted by law. Benefits contributed to employees under this defined contribution plan vest immediately. The defined contribution plan expense was $4.5 million in 2015 , $4.2 million in 2014 , and $3.9 million in 2013 . During 2014, the Company adopted a non-qualified deferred compensation plan which allows for deferrals of incentive payments until an elected distribution date in the future. This deferred compensation plan is available to certain highly compensated employees. Deferrals are invested at the election of the participant into one of the actively managed funds made available to the participant through the Company's Investment Management Group. The funds are held in a Rabbi Trust until the elected date of distribution. During 2014, the Company adopted a non-qualified 401(k) Restoration Plan ("Restoration Plan") for certain executive officers. The Restoration Plan is intended to contribute to each participant the amount of matching and discretionary contributions which would have been made to the existing Rockland Trust 401(k) plan on the participant's behalf, but were prohibited due to Internal Revenue Code limitations. Deferrals are invested at the election of the participant into one of the actively managed funds made available to the participant through the Company's Investment Management Group or in the Company's stock. The funds, which are not invested in the Company's stock are held in a Rabbi Trust until elected date of distribution. The Company recognized expense of $232,000 and $56,000 related to this plan for services already performed for the years ended December 31, 2015 and 2014 , respectively. There was no expense related to this plan for the year ended December 31, 2013 . As a result of the Peoples acquisition in 2015, the Company assumed an Employee Stock Ownership Plan and a 401(k) Plan. The Company has received approval to terminate the Employee Stock Ownership Plan from the Internal Revenue Service, and is in the process of making final distributions. In addition, the Company is in the process of finalizing the final compliance reporting for the 401(k) Plan and will then terminate the plan. Also as part of the Peoples acquisition, the Company assumed various Salary Continuation Agreements with certain current and former senior executives. The agreements require the payment of specified benefits upon retirement over periods of ten or twenty years as described in each agreement. Expense related to the Salary Continuation Agreements was $222,000 for the year ended December 31, 2015 . The Company also assumed a Peoples supplemental retirement plan with a former executive, whereby the amounts paid under this plan commenced upon the executive's retirement and continue for his lifetime. Expense related to the supplemental retirement plan was $11,000 for the year ended December 31, 2015 . Director Benefits The Company maintains a deferred compensation plan for the Company’s Board of Directors. The Board of Directors is entitled to elect to defer their director’s fees until retirement. If the Director elects to do so, their compensation is invested in the Company’s stock and maintained within the Company’s Investment Management Group. The amount of compensation deferred during 2015 , 2014 , and 2013 was $149,000 , $135,000 , and $107,000 , respectively. At December 31, 2015 and 2014 , the Company had 172,580 and 176,849 of shares provided for the plan with a related liability of $3.9 million and $3.7 million established within shareholders’ equity, respectively. As a result of the Peoples acquisition during 2015, the Company assumed several Director Retirement Agreements. The agreements require the payment of specified benefits upon retirement over periods of ten or twenty years as described in each agreement. Expense for the Director Retirement Agreements was $35,000 for the year ended December 31, 2015 .

FAIR VALUE MEASUREMENTS

FAIR VALUE MEASUREMENTS	12 Months Ended
	Dec. 31, 2015
Fair Value Disclosures [Abstract]
FAIR VALUE MEASUREMENTS	Fair value is a market-based measure considered from the perspective of a market participant rather than an entity-specific measure. Therefore, even when market assumptions are not readily available, the Company’s own assumptions are set to reflect those that market participants would use in pricing the asset or liability at the measurement date. If there has been a significant decrease in the volume and level of activity for the asset or liability, regardless of the valuation technique(s) used, the objective of a fair value measurement remains the same. Fair value is the price that would be received to sell an asset or paid to transfer a liability in an orderly transaction (that is, not a forced liquidation or distressed sale) between market participants at the measurement date under current market conditions. The Company uses prices and inputs that are current as of the measurement date. In periods of market dislocation, the observability of prices and inputs may be reduced for many instruments. This condition could cause an instrument to be reclassified from one level to another. The Fair Value Measurements and Disclosures Topic of the FASB ASC defines fair value and establishes a fair value hierarchy that prioritizes the inputs to valuation techniques used to measure fair value. The hierarchy gives the highest priority to unadjusted quoted prices in active markets for identical assets or liabilities (Level 1 measurements) and the lowest priority to unobservable inputs (Level 3 measurements). The three levels of the fair value hierarchy under the Fair Value Measurements and Disclosures Topic of the FASB ASC are described below: Level 1 – Inputs are quoted prices (unadjusted) in active markets for identical assets or liabilities that the reporting entity has the ability to access at the measurement date. Level 2 – Valuations based on quoted prices in markets that are not active or for which all significant inputs are observable, either directly or indirectly. Level 3 – Prices or valuations that require inputs that are both significant to the fair value measurement and unobservable. To the extent that valuation is based on models or inputs that are less observable or unobservable in the market, the determination of fair value requires more judgment. Accordingly, the degree of judgment exercised by the Company in determining fair value is greatest for instruments categorized in Level 3. A financial instrument’s level within the fair value hierarchy is based on the lowest level of any input that is significant to the fair value measurement. Valuation Techniques There have been no changes in the valuation techniques used during the current period. Securities: Trading Securities These equity securities are valued based on market quoted prices. These securities are categorized in Level 1 as they are actively traded and no valuation adjustments have been applied. U.S. Government Agency Securities Fair value is estimated using either multi-dimensional spread tables or benchmarks. The inputs used include benchmark yields, reported trades, and broker/dealer quotes. These securities are classified as Level 2. Agency Mortgage-Backed Securities Fair value is estimated using either a matrix or benchmarks. The inputs used include benchmark yields, reported trades, broker/dealer quotes, and issuer spreads. These securities are categorized as Level 2. Agency Collateralized Mortgage Obligations and Small Business Administration Pooled Securities The valuation model for these securities is volatility-driven and ratings based, and uses multi-dimensional spread tables. The inputs used include benchmark yields, reported trades, new issue data, broker dealer quotes, and collateral performance. If there is at least one significant model assumption or input that is not observable, these securities are categorized as Level 3 within the fair value hierarchy; otherwise, they are classified as Level 2. State, County, and Municipal Securities The fair value is estimated using a valuation matrix with inputs including bond interest rate tables, recent transaction, and yield relationships. These securities are categorized as Level 2. Single and Pooled Issuer Trust Preferred Securities The fair value of trust preferred securities, including pooled and single issuer preferred securities, is estimated using external pricing models, discounted cash flow methodologies or similar techniques. The inputs used in these valuations include benchmark yields, reported trades, new issue data, broker dealer quotes, and collateral performance. If there is at least one significant model assumption or input that is not observable, these securities are classified as Level 3 within the fair value hierarchy; otherwise, they are classified as Level 2. Equity Securities These equity securities are valued based on market quoted prices. These securities are classified as Level 1 as they are actively traded and no valuation adjustments have been applied. Loans Held for Sale The Company has elected the fair value option to account for originated closed loans intended for sale. The fair value is measured on an individual loan basis using quoted market prices and when not available, comparable market value or discounted cash flow analysis may be utilized. These assets are typically classified as Level 2. Derivative Instruments Derivatives The valuation of these instruments is determined using widely accepted valuation techniques including discounted cash flow analysis on the expected cash flows of each derivative. This analysis reflects the contractual terms of the derivatives, including the period to maturity, and uses observable market-based inputs, including interest rate curves and implied volatilities. The Company incorporates credit valuation adjustments to appropriately reflect 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. Additionally, in conjunction with fair value measurement guidance, the Company has made an accounting policy election to measure the credit risk of its derivative financial instruments that are subject to master netting agreements on a net basis by counterparty portfolio. 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 the Company and its counterparties. However, as of December 31, 2015 and 2014 , the Company has assessed the significance of the impact of the credit valuation adjustments on the overall valuation of its derivative positions and has determined that the credit valuation adjustments are not significant to the overall valuation of its derivatives. As a result, the Company has determined that its derivative valuations in their entirety are classified in Level 2. Mortgage Derivatives The fair value of mortgage derivatives is determined based on current market prices for similar assets in the secondary market and, therefore, classified as Level 2 within the fair value hierarchy. Impaired Loans Collateral dependent loans that are deemed to be impaired are valued based upon the lower of cost or fair value of the underlying collateral less costs to sell. The inputs used in the appraisals of the collateral are not always observable, and therefore the loans may be classified as Level 3 within the fair value hierarchy; otherwise, they are classified as Level 2. Other Real Estate Owned and Other Foreclosed Assets The fair values are generally estimated based upon recent appraisal values of the property less costs to sell the property, as Other Real Estate Owned ("OREO") and Other Foreclosed Assets are valued at the lower of cost or fair value of the property, less estimated costs to sell. Certain inputs used in appraisals are not always observable, and therefore OREO and Other Foreclosed Assets may be classified as Level 3 within the fair value hierarchy. Goodwill and Other Intangible Assets Goodwill and identified intangible assets are subject to impairment testing. The Company conducts an annual impairment test of goodwill in the third quarter of each year, or more frequently if necessary, and other intangible assets are reviewed for impairment whenever events or changes in circumstances indicate that the carrying amount of the assets may not be recoverable. To estimate the fair value of goodwill and, if necessary, other intangible assets, the Company utilizes both a comparable analysis of relevant price multiples in recent market transactions and discounted cash flow analysis. Both valuation models require a significant degree of management judgment. In the event the fair value as determined by the valuation model is less than the carrying value, the intangibles may be impaired. If the impairment testing resulted in impairment, the Company would classify the impaired goodwill and other intangible assets subjected to nonrecurring fair value adjustments as Level 3. Assets and liabilities measured at fair value on a recurring and nonrecurring basis were as follows as of the dates indicated: Fair Value Measurements at Reporting Date Using Balance Quoted Prices in Significant Other Significant December 31, 2015 (Dollars in thousands) Recurring fair value measurements Assets Trading securities $ 356 $ 356 $ — $ — Securities available for sale U.S. Government agency securities 30,215 — 30,215 — Agency mortgage-backed securities 210,937 — 210,937 — Agency collateralized mortgage obligations 63,584 — 63,584 — State, county, and municipal securities 4,659 — 4,659 — Single issuer trust preferred securities issued by banks and insurers 2,792 — 2,792 — Pooled trust preferred securities issued by banks and insurers 1,572 — — 1,572 Small business administration pooled securities 40,449 — 40,449 — Equity securities 13,041 13,041 — — Loans held for sale 5,990 — 5,990 — Derivative instruments 23,305 — 23,305 — Liabilities Derivative instruments 26,313 — 26,313 — Total recurring fair value measurements $ 370,587 $ 13,397 $ 355,618 $ 1,572 Nonrecurring fair value measurements Assets Collateral dependent impaired loans $ 4,598 $ — $ — $ 4,598 Other real estate owned and other foreclosed assets 2,159 — — 2,159 Total nonrecurring fair value measurements $ 6,757 $ — $ — $ 6,757 December 31, 2014 (Dollars in thousands) Recurring fair value measurements Assets Securities available for sale U.S. Government agency securities $ 41,486 $ — $ 41,486 $ — Agency mortgage-backed securities 217,678 — 217,678 — Agency collateralized mortgage obligations 63,035 — 63,035 — State, county, and municipal securities 5,223 — 5,223 — Single issuer trust preferred securities issued by banks and insurers 2,909 — 2,909 — Pooled trust preferred securities issued by banks and insurers 6,321 — — 6,321 Equity securities 11,902 11,902 — — Loans held for sale 6,888 — 6,888 — Derivative instruments 22,688 — 22,688 — Liabilities Derivative instruments 27,950 — 27,950 — Total recurring fair value measurements $ 350,180 $ 11,902 $ 331,957 $ 6,321 Nonrecurring fair value measurements: Assets Collateral dependent impaired loans $ 8,196 $ — $ — $ 8,196 Other real estate owned and other foreclosed assets 7,743 — — 7,743 Total nonrecurring fair value measurements $ 15,939 $ — $ — $ 15,939 The table below presents a reconciliation for all assets and liabilities measured at fair value on a recurring basis using significant unobservable inputs (Level 3). These instruments were valued using pricing models and discounted cash flow methodologies. The following table provides a reconciliation for all assets and liabilities measured at fair value on a recurring basis using significant unobservable inputs (Level 3) for the periods indicated: Securities Available for Sale December 31, 2015 December 31, 2014 December 31, 2013 (Dollars in thousands) Pooled Total Pooled Total Pooled Private Total Beginning balance $ 6,321 $ 6,321 $ 3,841 $ 3,841 $ 2,981 $ 3,532 $ 6,513 Gains and (losses) (realized/unrealized) Included in earnings — — — — — — — Included in other comprehensive income 14 14 2,655 2,655 1,132 (64 ) 1,068 Sales (4,679 ) (4,679 ) — — — (2,695 ) (2,695 ) Settlements (84 ) (84 ) (175 ) (175 ) (272 ) (773 ) (1,045 ) Transfers into (out of) level 3 — — — — — — — Ending balance $ 1,572 $ 1,572 $ 6,321 $ 6,321 $ 3,841 $ — $ 3,841 During the years ended December 31, 2015 , 2014 and 2013 there were no transfers between the Levels of the fair value hierarchy for any assets or liabilities measured at fair value on a recurring basis. It is the Company's policy to recognize such transfers as of the end of the reporting period. The following table sets forth certain unobservable inputs regarding the Company's investment in securities that are classified as Level 3: December 31, December 31, December 31, 2015 2014 2015 2014 2015 2014 Valuation Technique Fair Value Unobservable Inputs Range Weighted Average (Dollars in Thousands) Discounted cash flow methodology Pooled trust preferred securities $ 1,572 $ 6,321 Cumulative prepayment 0% - 64% 0% - 75% 2.7% 7.0% Cumulative default 5% - 100% 3% - 100% 15.1% 13.9% Loss given default 85% - 100% 85% - 100% 94.2% 96.1% Cure given default 0% - 75% 0% - 75% 62.3% 46.7% Appraisals of collateral (1) Impaired loans $ 4,598 $ 8,196 Other real estate owned and foreclosed assets $ 2,159 $ 7,743 (1) Fair value is generally determined through independent appraisals of the underlying collateral, which generally include various Level 3 inputs which are not identifiable. Appraisals may be adjusted by management for qualitative factors such as economic factors and estimated liquidation expenses. The range of these possible adjustments may vary. For the fair value measurements in the table above, which are classified as Level 3 within the fair value hierarchy, the Company’s Treasury and Finance groups determine the valuation policies and procedures. For the pricing of the securities, the Company uses third-party pricing information, without adjustment. Depending on the type of the security, management employs various techniques to analyze the pricing it receives from third parties, such as analyzing changes in market yields and in certain instances reviewing the underlying collateral of the security. Management reviews changes in fair value from period to period and performs testing to ensure that prices received from the third parties are consistent with their expectation of the market. For the securities whose market is deemed to be inactive and which are categorized as Level 3, the fair value models are calibrated and significant inputs are back tested on a quarterly basis, to the extent possible. This testing is done by the third party service provider, who performs this testing by comparing anticipated inputs to actual results. Significant changes in fair value from period to period are closely scrutinized to ensure fair value models are not flawed. The driver(s) of the respective change in fair value and the method for forecasting the driver(s) is closely considered by management. The significant unobservable inputs used in the fair value measurement of the Company’s pooled trust preferred securities are cumulative prepayment rates, cumulative defaults, loss given defaults and cure given defaults. Significant increases (decreases) in deferrals or defaults, in isolation, would result in a significantly lower (higher) fair value measurement. Alternatively, significant increases (decreases) in cure rates, in isolation, would result in a significantly higher (lower) fair value measurement. Additionally, the Company has certain assets which are marked to fair value on a nonrecurring basis which are categorized within Level 3. These assets include collateral dependent impaired loans and OREO and other foreclosed assets. The determination of the fair value amount is derived from the use of independent third party appraisals and evaluations, prepared by firms from a predetermined list of qualified and approved appraisers or evaluators. Upon receipt of an appraisal or evaluation, the Company's Commercial Real Estate Appraisal Department will review the report for compliance with regulatory and Company standards, as well as reasonableness and acceptance of the value conclusions. Any issues or concerns regarding compliance or value conclusions will be addressed with the engaged firm and the report may be adjusted or revised. If a disagreement cannot be resolved, the Commercial Real Estate Appraisal Department will either address the key issues and modify the report for acceptance or reject the report and re-order a new report. Ultimately, the Company’s Commercial Real Estate Appraisal Department will confirm the collateral value as part of its review process. The estimated fair values and related carrying amounts for assets and liabilities for which fair value is only disclosed are shown below as of the periods indicated: Fair Value Measurements at Reporting Date Using Book Value Fair Value Quoted Prices in Active Markets for Identical Assets (Level 1) Significant Other Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) December 31, 2015 (Dollars in thousands) Financial assets Securities held to maturity(a) U.S. Treasury securities $ 1,009 $ 1,064 $ — $ 1,064 $ — Agency mortgage-backed securities 167,134 170,375 — 170,375 — Agency collateralized mortgage obligations 267,348 264,891 — 264,891 — State, county, and municipal securities 225 227 — 227 — Single issuer trust preferred securities issued by banks 1,500 1,522 — 1,522 — Small business administration pooled securities 35,291 35,664 — 35,664 — Corporate debt securities 5,000 5,006 — 5,006 — Loans, net of allowance for loan losses(b) 5,491,896 5,422,023 — — 5,422,023 Financial liabilities Time certificates of deposits(c) $ 684,830 $ 684,370 $ — $ 684,370 $ — Federal Home Loan Bank borrowings(c) 102,080 102,396 — 102,396 — Customer repurchase agreements and other short-term borrowings(c) 133,958 133,958 — — 133,958 Junior subordinated debentures(d) 73,464 74,029 — 74,029 — Subordinated debentures(c) 35,000 34,781 — — 34,781 December 31, 2014 Financial assets (Dollars in thousands) Securities held to maturity(a) U.S. Treasury securities $ 1,010 $ 1,073 $ — $ 1,073 $ — Agency mortgage-backed securities 159,522 164,944 — 164,944 — Agency collateralized mortgage obligations 198,220 196,584 — 196,584 — State, county, and municipal securities 424 428 — 428 — Small business administration pooled securities 9,775 10,074 — 10,074 — Single issuer trust preferred securities issued by banks 1,500 1,477 — 1,477 — Corporate debt securities 5,002 5,119 — 5,119 — Loans, net of allowance for loan losses(b) 4,907,437 4,875,283 — — 4,875,283 Financial liabilities Time certificates of deposits(c) $ 649,620 $ 651,180 $ — $ 651,180 $ — Federal Home Loan Bank borrowings(c) 70,080 70,208 — 70,208 — Customer repurchase agreements and other short-term borrowings(c) 147,890 147,890 — — 147,890 Wholesale repurchase agreements(c) 50,000 50,510 — — 50,510 Junior subordinated debentures(d) 73,685 70,045 — 70,045 — Subordinated debentures(c) 65,000 64,198 — — 64,198 (a) The fair values presented are based on quoted market prices, where available. If quoted market prices are not available, fair values are based on quoted market prices of comparable instruments and/or discounted cash flow analysis. (b) Fair value is estimated by discounting the future cash flows using the current rates at which similar loans would be made to borrowers with similar credit ratings and for the same remaining maturities or cash flows. (c) Fair value was determined by discounting anticipated future cash payments using rates currently available for instruments with similar remaining maturities. (d) Fair value was determined based upon market prices of securities with similar terms and maturities. This summary excludes financial assets and liabilities for which the carrying value approximates fair value. For financial assets, these include cash and due from banks, federal funds sold, short-term investments, FHLB stock, and cash surrender value of life insurance policies. For financial liabilities, these include demand, savings, money market deposits, and federal funds purchased. These instruments would all be considered to be classified as Level 1 within the fair value hierarchy. Also excluded from the summary are financial instruments measured at fair value on a recurring and nonrecurring basis, as previously described. The Company considers its financial instruments' current use to be the highest and best use of the instruments.

OTHER COMPREHENSIVE LOSS

OTHER COMPREHENSIVE LOSS	12 Months Ended
	Dec. 31, 2015
Equity [Abstract]
OTHER COMPREHENSIVE LOSS	following table presents a reconciliation of the changes in the components of other comprehensive income (loss) for the dates indicated, including the amount of income tax (expense) benefit allocated to each component of other comprehensive income (loss): Year Ended December 31, 2015 Pre Tax Tax (Expense) After Tax (Dollars in thousands) Change in fair value of securities available for sale $ (3,757 ) $ 1,434 $ (2,323 ) Less: net security losses reclassified into other noninterest income (405 ) 165 (240 ) Net change in fair value of securities available for sale (3,352 ) 1,269 (2,083 ) Change in fair value of cash flow hedges (776 ) 299 (477 ) Less: net cash flow hedge losses reclassified into interest on borrowings expense (1) (2,828 ) 1,152 (1,676 ) Net change in fair value of cash flow hedges 2,052 (853 ) 1,199 Net unamortized gain related to defined benefit pension and other postretirement adjustments arising during the period 438 (193 ) 245 Less: amortization of net actuarial losses (243 ) 99 (144 ) Less: amortization of net prior service credits (294 ) 119 (175 ) Net change in other comprehensive income for defined benefit postretirement plans (2) 975 (411 ) 564 Total other comprehensive loss $ (325 ) $ 5 $ (320 ) Year Ended December 31, 2014 Pre Tax Tax (Expense) After Tax (Dollars in thousands) Change in fair value of securities available for sale $ 9,095 $ (3,570 ) $ 5,525 Less: net security gains reclassified into other noninterest income 191 (78 ) 113 Net change in fair value of securities available for sale 8,904 (3,492 ) 5,412 Change in fair value of cash flow hedges (969 ) 396 (573 ) Less: net cash flow hedge losses reclassified into interest on borrowings expense (1) (3,662 ) 1,496 (2,166 ) Less: loss on termination of hedge reclassified into noninterest expense (1,122 ) 459 (663 ) Net change in fair value of cash flow hedges 3,815 (1,559 ) 2,256 Net unamortized loss related to defined benefit pension and other postretirement adjustments arising during the period (2,699 ) 1,103 (1,596 ) Net prior service costs related to plan amendment arising during the period 1,357 (554 ) 803 Less: amortization of net actuarial gains 44 (18 ) 26 Less: amortization of net prior service credits (102 ) 42 (60 ) Less: amortization of net transition obligation 2 (1 ) 1 Net change in other comprehensive income for defined benefit postretirement plans (2) (4,000 ) 1,634 (2,366 ) Total other comprehensive income $ 8,719 $ (3,417 ) $ 5,302 Year Ended December 31, 2013 Pre Tax Tax (Expense) After Tax (Dollars in thousands) Change in fair value of securities available for sale $ (11,943 ) $ 4,578 $ (7,365 ) Less: net security gains reclassified into other noninterest income 230 (94 ) 136 Net change in fair value of securities available for sale (12,173 ) 4,672 (7,501 ) Change in fair value of cash flow hedges 592 (242 ) 350 Less: net cash flow hedge losses reclassified into interest on borrowings expense (1) (5,723 ) 2,338 (3,385 ) Net change in fair value of cash flow hedges 6,315 (2,580 ) 3,735 Net unamortized gain related to defined benefit pension and other postretirement adjustments arising during the period 1,302 (532 ) 770 Less: amortization of net actuarial losses (42 ) 17 (25 ) Less: amortization of net prior service credits (102 ) 42 (60 ) Less: amortization of net transition asset (4 ) 1 (3 ) Net change in other comprehensive income for defined benefit postretirement plans (2) 1,450 (592 ) 858 Total other comprehensive loss $ (4,408 ) $ 1,500 $ (2,908 ) (1) Includes the amortization of the remaining balance of a realized but unrecognized gain, net of tax, from the termination of interest rate swaps in June 2009. The original gain of $1.4 million , net of tax, will be recognized in earnings through December 2018 , the original maturity date of the swap. The balance of this gain had amortized to $427,000 , $571,000 , and $715,000 at December 31, 2015 , 2014 , and 2013 , respectively. (2) The amortization of prior service costs is included in the computation of net periodic pension costs as disclosed in Note 15 - Employee Benefit Plans . Information on the Company's accumulated other comprehensive loss, net of tax, is comprised of the following components as of the periods indicated: Unrealized Gain on Securities Unrealized Loss on Cash Flow Hedge Deferred Gain on Hedge Transactions Defined Benefit Postretirement Plans Accumulated Other Comprehensive Loss (Dollars in Thousands) Beginning balance: January 1, 2013 $ 5,478 $ (9,577 ) $ 859 $ (1,286 ) $ (4,526 ) Net change in other comprehensive income (loss) (7,501 ) 3,879 (144 ) 858 (2,908 ) Ending balance: December 31, 2013 $ (2,023 ) $ (5,698 ) $ 715 $ (428 ) $ (7,434 ) Net change in other comprehensive income (loss) 5,412 2,400 (144 ) (2,366 ) 5,302 Ending balance: December 31, 2014 $ 3,389 $ (3,298 ) $ 571 $ (2,794 ) $ (2,132 ) Net change in other comprehensive income (loss) (2,083 ) 1,343 (144 ) 564 (320 ) Ending balance: December 31, 2015 $ 1,306 $ (1,955 ) $ 427 $ (2,230 ) $ (2,452 )

COMMITMENTS AND CONTINGENCIES

COMMITMENTS AND CONTINGENCIES	12 Months Ended
	Dec. 31, 2015
Commitments and Contingencies Disclosure [Abstract]
COMMITMENTS AND CONTINGENCIES	COMMITMENTS AND CONTINGENCIES Financial Instruments with Off-Balance Sheet Risk In the normal course of business, the Company enters into various transactions to meet the financing needs of its customers, which, in accordance with GAAP, are not included in its consolidated balance sheets. These transactions include commitments to extend credit and standby letters of credit, which involve, to varying degrees, elements of credit risk and interest rate risk in excess of the amounts recognized in the consolidated balance sheets. The Company minimizes its exposure to loss under these commitments by subjecting them to credit approval and monitoring procedures. The Company enters into contractual commitments to extend credit, normally with fixed expiration dates or termination clauses, at specified rates and for specific purposes. Substantially all of these commitments to extend credit are contingent upon customers maintaining specific credit standards at the time of loan funding. Standby letters of credit are written conditional commitments issued to guarantee the performance of a customer to a third party. In the event the customer does not perform in accordance with the terms of the agreement with the third party, the Company would be required to fund the commitment. The maximum potential amount of future payments the Company could be required to make is represented by the contractual amount of the commitment. If the commitment were funded, the Company would be entitled to seek recovery from the customer. The Company’s policies generally require that standby letter of credit arrangements contain security and debt covenants similar to those contained in loan agreements. The fees collected in connection with the issuance of standby letters of credit are representative of the fair value of its obligation undertaken in issuing the guarantee. In accordance with applicable accounting standards related to guarantees, fees collected in connection with the issuance of standby letters of credit are deferred. The fees are then recognized in income proportionately over the life of the standby letter of credit agreement. The deferred standby letter of credit fees represent the fair value of the Company's potential obligations under the standby letter of credit guarantees. The following table summarizes the above financial instruments at the dated indicated: 2015 2014 (Dollars In thousands) Commitments to extend credit $ 2,091,170 $ 1,822,369 Standby letters of credit $ 17,962 $ 18,516 Deferred standby letter of credit fees $ 72 $ 105 Lease Commitments The Company leases office space, space for ATM locations, and certain branch locations under noncancelable operating leases. The following is a schedule of minimum future lease payments under such leases as of December 31, 2015 : (Dollars In thousands) 2016 $ 8,943 2017 8,681 2018 7,334 2019 6,670 2020 5,695 Thereafter 10,220 Total future minimum lease commitments $ 47,543 Rent expense incurred under operating leases was approximately $8.2 million in 2015 , $7.9 million in 2014 , and $7.6 million in 2013 . Renewal options ranging from 1-10 years exist for several of these leases. Other Contingencies At December 31, 2015 , Rockland Trust was involved in pending lawsuits that arose in the ordinary course of business. Management has reviewed these pending lawsuits with legal counsel and has taken into consideration the view of counsel as to their outcome. In the opinion of management, the final disposition of pending lawsuits is not expected to have a material adverse effect on the Company’s financial position or results of operations. The Bank is required to maintain certain reserve requirements of vault cash and/or deposits with the Federal Reserve Bank of Boston. The amount of this reserve requirement was $21.7 million and $33.0 million at December 31, 2015 and 2014 , respectively.

REGULATORY CAPITAL REQUIREMENTS

REGULATORY CAPITAL REQUIREMENTS	12 Months Ended
	Dec. 31, 2015
Banking and Thrift [Abstract]
REGULATORY CAPITAL REQUIREMENTS	REGULATORY MATTERS Regulatory Capital Requirements The Company and the Bank are subject to various regulatory capital requirements administered by the federal banking agencies. Failure to meet minimum capital requirements can initiate certain mandatory and possibly additional discretionary actions by regulators that, if undertaken, could have a direct material effect on the Company’s financial statements. Under capital adequacy guidelines and the regulatory framework for prompt corrective action, the Company and the Bank must meet specific capital guidelines that involve quantitative measures of the Company’s and the Bank’s assets, liabilities and certain off-balance sheet items as calculated under regulatory accounting practices. The capital amounts and classification are also subject to qualitative judgments by the regulators about components, risk weightings and other factors. Quantitative measures established by regulation to ensure capital adequacy require the Company and the Bank to maintain minimum amounts and ratios (set forth in the table below) of Total, Tier 1 Capital and Common Equity Tier 1 Capital (as defined for regulatory purposes) to risk weighted assets (as defined for regulatory purposes) and Tier 1 Capital to average assets (as defined for regulatory purposes). Management believes, as of December 31, 2015 and 2014 that the Company and the Bank met all capital adequacy requirements to which they are subject. At December 31, 2015 the most recent notification from the Federal Deposit Insurance Corporation indicated that the Bank's capital levels met or exceeded the minimum levels to be considered "well capitalized" for bank regulatory purposes. To be categorized as well capitalized, an institution must maintain minimum total risk-based, Tier 1 risk-based, Common equity Tier 1 risk-based and Tier 1 leverage ratios as set forth in the following tables. There are no conditions or events since the notification that management believes have changed the Bank’s category. The Company’s and the Bank’s actual capital amounts and ratios as of December 31, 2015 and 2014 are also presented in the table that follows: Actual For Capital To Be Well Capitalized Amount Ratio Amount Ratio Amount Ratio December 31, 2015 (Dollars in thousands) Independent Bank Corp. Total capital (to risk weighted assets) $ 747,372 13.36 % $ 447,664 ≥ 8.0 % N/A N/A Common equity tier 1 capital (to risk weighted assets) $ 584,378 10.44 % $ 251,811 ≥ 4.5 % N/A N/A Tier 1 capital (to risk weighted assets) $ 655,154 11.71 % $ 335,748 ≥ 6.0 % N/A N/A Tier 1 capital (to average assets) $ 655,154 9.33 % $ 280,889 ≥ 4.0 % N/A N/A Rockland Trust Company Total capital (to risk weighted assets) $ 718,197 12.84 % $ 447,334 ≥ 8.0 % $ 559,167 ≥ 10.0 % Common equity tier 1 capital (to risk weighted assets) $ 660,979 11.82 % $ 251,625 ≥ 4.5 % $ 363,459 ≥ 6.5 % Tier 1 capital (to risk weighted assets) $ 660,979 11.82 % $ 335,500 ≥ 6.0 % $ 447,334 ≥ 8.0 % Tier 1 capital (to average assets) $ 660,979 9.42 % $ 280,653 ≥ 4.0 % $ 350,816 ≥ 5.0 % December 31, 2014 (Dollars in thousands) Independent Bank Corp. Total capital (to risk weighted assets) $ 666,898 13.15 % $ 405,650 ≥ 8.0 % N/A N/A Tier 1 capital (to risk weighted assets) $ 551,836 10.88 % $ 202,825 ≥ 4.0 % N/A N/A Tier 1 capital (to average assets) $ 551,836 8.84 % $ 249,825 ≥ 4.0 % N/A N/A Rockland Trust Company Total capital (to risk weighted assets) $ 607,100 11.98 % $ 405,465 ≥ 8.0 % $ 506,831 ≥ 10.0 % Tier 1 capital (to risk weighted assets) $ 527,038 10.40 % $ 202,732 ≥ 4.0 % $ 304,099 ≥ 6.0 % Tier 1 capital (to average assets) $ 527,038 8.44 % $ 249,788 ≥ 4.0 % $ 312,235 ≥ 5.0 % Dividend Restrictions In the ordinary course of business, the Company is dependent upon dividends from the Bank to provide funds for the payment of dividends to shareholders and to provide for other cash requirements. Banking regulations may limit the amount of dividends that may be paid. Approval by regulatory authorities is required if the effect of dividends declared would cause the regulatory capital of the Bank to fall below specified minimum levels. Approval is also required if dividends declared exceed the net profits for that year combined with the retained net profits for the preceding two years. Under the foregoing dividend restrictions and while maintaining its "well capitalized" status, dividends paid by the Bank to the Company for the year ended December 31, 2015 and 2014 totaled $38.1 million and $40.1 million , respectively. Trust Preferred Securities In accordance with the applicable accounting standard related to variable interest entities, the common stock of trusts which have issued trust preferred securities have not been included in the consolidated financial statements. At December 31, 2015 and 2014 , $71.0 million in trust preferred securities have been included in the Tier 1 capital of the Company for regulatory reporting purposes pursuant to the Federal Reserve's capital adequacy guidelines.

PARENT COMPANY FINANCIALS ONLY

PARENT COMPANY FINANCIALS ONLY	12 Months Ended
	Dec. 31, 2015
Condensed Financial Information of Parent Company Only Disclosure [Abstract]
PARENT COMPANY FINANCIAL STATEMENTS	densed financial information relative to the Parent Company’s balance sheets at December 31, 2015 and 2014 and the related statements of income and cash flows for the years ended December 31, 2015 , 2014 , and 2013 are presented below. The statement of stockholders’ equity is not presented below as the parent company’s stockholders’ equity is that of the consolidated Company. BALANCE SHEETS December 31 2015 2014 (Dollars in thousands) Assets Cash (1) $ 35,428 $ 64,791 Investments in subsidiaries(2) 851,743 691,406 Prepaid income taxes 530 285 Deferred tax asset 2,229 2,620 Deferred stock issuance costs 569 467 Total assets $ 890,499 $ 759,569 Liabilities and stockholders’ equity Dividends payable $ 6,824 $ 5,761 Junior subordinated debentures 73,464 73,685 Subordinated debentures 35,000 35,000 Derivative instruments(1) 2,109 4,187 Other liabilities 1,639 409 Total liabilities 119,036 119,042 Stockholders’ equity 771,463 640,527 Total liabilities and stockholders’ equity $ 890,499 $ 759,569 (1) Entire balance eliminates in consolidation. (2) $849.5 million and $689.2 million eliminate in consolidation at December 31, 2015 and 2014 , respectively. STATEMENTS OF INCOME Years Ended December 31 2015 2014 2013 (Dollars in thousands) Income Dividends received from subsidiaries(1) $ 38,153 $ 40,170 $ 30,694 Interest income(2) 78 57 50 Total income 38,231 40,227 30,744 Expenses Interest expense 5,769 4,225 4,122 Other expenses 29 — 15 Total expenses 5,798 4,225 4,137 Income before income taxes and equity in undistributed income of subsidiaries 32,433 36,002 26,607 Income tax benefit (2,301 ) (1,298 ) (1,342 ) Income of parent company 34,734 37,300 27,949 Equity in undistributed income of subsidiaries 30,226 22,545 22,305 Net income $ 64,960 $ 59,845 $ 50,254 (1) Income of $55,000 , $53,000 and $54,000 was not eliminated in consolidation for the years ended December 31, 2015 , 2014 , and 2013 , respectively. (2) Entire balance eliminated in consolidation. STATEMENTS OF CASH FLOWS Years Ended December 31 2015 2014 2013 (Dollars in thousands) Cash flows from operating activities Net income $ 64,960 $ 59,845 $ 50,254 Adjustments to reconcile net income to cash provided by operating activities Accretion (150 ) (486 ) (155 ) Deferred income tax expense 3,266 293 203 Change in other assets 7,314 — (373 ) Change in other liabilities (80 ) 25 206 Equity in undistributed income of subsidiaries (30,226 ) (22,545 ) (22,305 ) Net cash provided by operating activities 45,084 37,132 27,830 Cash flows used in investing activities Cash paid for acquisitions, net of cash acquired (51,680 ) — (10,832 ) Net cash used in investing activities (51,680 ) — (10,832 ) Cash flows used in financing activities Proceeds from short-term borrowings — — 10,000 Repayment of short-term borrowings — (5,000 ) (17,000 ) Proceeds from issuance of subordinated debentures — 35,000 — Restricted stock awards issued, net of awards surrendered (657 ) (641 ) — Net proceeds from exercise of stock options 1,367 2,333 2,475 Proceeds from shares issued under the direct stock purchase plan 2,695 1,555 969 Common dividends paid (26,172 ) (22,443 ) (15,122 ) Net cash provided by (used in) financing activities (22,767 ) 10,804 (18,678 ) Net increase (decrease) in cash and cash equivalents (29,363 ) 47,936 (1,680 ) Cash and cash equivalents at the beginning of the year 64,791 16,855 18,535 Cash and cash equivalents at the end of the year $ 35,428 $ 64,791 $ 16,855

SELECTED QUARTERLY FINANCIAL DA

SELECTED QUARTERLY FINANCIAL DATA (UNAUDITED)	12 Months Ended
	Dec. 31, 2015
Quarterly Financial Information Disclosure [Abstract]
SELECTED QUARTERLY FINANCIAL DATA (UNAUDITED)	SELECTED QUARTELY FINANCIAL DATA (UNAUDITED) First Quarter Second Quarter Third Quarter Fourth Quarter 2015 2014 2015 2014 2015 2014 2015 2014 (Dollars in thousands, except per share data) Interest income $ 56,429 $ 52,980 $ 59,016 $ 54,285 $ 60,228 $ 54,368 $ 59,870 $ 54,827 Interest expense 5,180 5,374 5,269 5,232 5,183 4,805 4,985 5,007 Net interest income 51,249 47,606 53,747 49,053 55,045 49,563 54,885 49,820 Provision (benefit) for loan losses (500 ) 4,502 700 2,250 800 1,901 500 1,750 Total noninterest income 16,557 17,516 20,261 16,857 19,247 17,098 19,824 18,473 Total noninterest expenses 54,977 41,887 48,644 42,980 47,031 42,607 46,486 44,364 Provision for income taxes 3,869 5,350 7,213 5,934 7,867 6,415 8,268 6,201 Net income $ 9,460 $ 13,383 $ 17,451 $ 14,746 $ 18,594 $ 15,738 $ 19,455 $ 15,978 Basic earnings per share $ 0.38 $ 0.56 $ 0.67 $ 0.62 $ 0.71 $ 0.66 $ 0.74 $ 0.67 Diluted earnings per share $ 0.38 $ 0.56 $ 0.67 $ 0.61 $ 0.71 $ 0.66 $ 0.74 $ 0.66 Weighted average common shares (basic) 24,959,865 23,819,065 26,149,593 23,897,413 26,200,621 23,911,678 26,238,004 23,968,320 Common stock equivalents 80,215 100,173 71,819 94,560 63,493 90,685 52,772 86,812 Weighted average common shares (diluted) 25,040,080 23,919,238 26,221,412 23,991,973 26,264,114 24,002,363 26,290,776 24,055,132 Unusual or infrequently occurring items Items within noninterest income Gain on life insurance benefits $ — $ 1,627 $ — $ 337 $ — $ — $ — $ — Gain on sale of fixed income securities — — 798 — — — — 121 Total $ — $ 1,627 $ 798 $ 337 $ — $ — $ — $ 121 Items within noninterest expense Impairment on acquired facilities $ — $ 503 $ 109 $ — $ — $ 21 $ — $ — Loss on extinguishment of debt 122 — — — — — — — Loss on sale of fixed income securities — — 1,124 — — — — 21 Loss on termination of derivatives — — — 1,122 — — — — Merger and acquisition expense 10,230 77 271 — — 677 — 586 Total $ 10,352 $ 580 $ 1,504 $ 1,122 $ — $ 698 $ — $ 607

TRANSACTIONS WITH RELATED PARTI

TRANSACTIONS WITH RELATED PARTIES (Notes)	12 Months Ended
	Dec. 31, 2015
Related Party Transactions [Abstract]
Related Party Transactions Disclosure [Text Block]	TRANSACTIONS WITH RELATED PARTIES Certain directors and officers (including their affiliates, certain family members and entities in which they are principal owners) of the Company are customers of and have had, and are expected to have, transactions with the Company, within the ordinary course of business. These transactions include, but are not limited to, lending activities, deposit services, investment management, and property lease commitments. In the opinion of management, such transactions are consistent with prudent banking practices and are within applicable banking regulations. Further details relating to certain related party transactions are outlined below: Lending Activities The following information represents annual activity of loans to related parties for the periods indicated: 2015 2014 (Dollars in thousands) Principal balance of loans outstanding at beginning of year $ 25,994 $ 52,510 Loan advances 9,268 21,310 Loan payments/payoffs (10,609 ) (21,913 ) Reduction for former directors (1) — (25,913 ) Principal balance of loans outstanding at end of year $ 24,653 $ 25,994 (1) Amounts relate to loans to individuals who are no longer current directors of the Company and therefore are not deemed to be an insider. At December 31, 2015 and 2014 there were no loans to related parties which were past due, on nonaccrual status or that had been restructured as part of a troubled debt restructuring. Deposits At December 31, 2015 and 2014 the amount of deposit balances to related parties totaled $13.9 million and $8.7 million , respectively. Lease Commitments Leases with related parties required rental payments of approximately $278,000 and $268,000 during the years ended December 31, 2014 and 2013, respectively. There were no such leases during the year ended December 31, 2015.

SUMMARY OF SIGNIFICANT ACCOUN31

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Policies)	12 Months Ended
	Dec. 31, 2015
Accounting Policies [Abstract]
PRINCIPLES OF CONSOLIDATION	The consolidated financial statements include the accounts of the Company, the Bank and other wholly-owned subsidiaries, except subsidiaries that are not deemed necessary to be consolidated. All significant intercompany balances and transactions have been eliminated in consolidation. The Company determines whether it has a controlling financial interest in an entity by first evaluating whether the entity is a voting interest entity or a variable interest entity under GAAP. Voting interest entities are entities in which the total equity investment at risk is sufficient to enable the entity to finance itself independently and provides the equity holders with the obligation to absorb losses, the right to receive residual returns and the right to make decisions about the entity’s activities. The Company would consolidate voting interest entities in which it has all, or at least a majority of, the voting interest. As defined in applicable accounting standards, variable interest entities (“VIEs”) are entities that lack one or more of the characteristics of a voting interest entity. A controlling financial interest in a VIE is present when the Company has both the power and ability to direct the activities of the VIE that most significantly impact the VIE's economic performance and an obligation to absorb losses or the right to receive benefits that could potentially be significant to the VIE. The Company also owns the common stock of various trusts which have issued trust preferred securities. These trusts are VIEs in which the Company is not the primary beneficiary and, therefore, are not consolidated. The trust's only assets are junior subordinated debentures issued by the Company, which were acquired by the trust using the proceeds from the issuance of the trust preferred securities and common stock. The junior subordinated debentures are included in long-term debt and the Company’s equity interest in the trust is included in other assets in the accompanying Consolidated Balance Sheets. Interest expense on the junior subordinated debentures is reported in interest expense on long-term debt in the accompanying Consolidated Statements of Income.
RECLASSIFICATION	Reclassification Certain previously reported amounts have been reclassified to conform to the current year’s presentation.
USE OF ESTIMATES	Use of Estimates The preparation of financial statements in conformity with accounting principles generally accepted in the United States of America requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting periods. Actual results could vary from these estimates. Material estimates that are particularly susceptible to significant changes in the near-term relate to the determination of the allowance for loan losses, income taxes, valuation and potential impairment of investment securities, other-than-temporary impairment (“OTTI”) of certain investment securities, as well as valuation of goodwill and other intangibles and their respective analyses of impairment.
SIGNIFICANT CONCENTRATIONS OF CREDIT RISK	Significant Concentrations of Credit Risk The vast majority of the Bank’s lending activities are conducted in the Commonwealth of Massachusetts and Rhode Island. The Bank originates commercial and industrial loans, commercial and residential real estate loans, including construction loans, small business loans, home equity loans, and other consumer loans for its portfolio. The Bank considers a concentration of credit to a particular industry to exist when the aggregate credit exposure which includes direct, indirect or contingent obligations to a borrower, an affiliated group of borrowers or a nonaffiliated group of borrowers engaged in one industry, exceeds 10% of the Bank’s loan portfolio.
CASH AND CASH EQUIVALENTS	Cash and Cash Equivalents For purposes of reporting cash flows, cash and cash equivalents may include cash on hand, amounts due from banks, inclusive of interest-earning deposits held at banks, and federal funds sold. Generally, federal funds are sold for up to two week periods.
SECURITIES	Investment securities are classified at the time of purchase as “available for sale,” “held to maturity,” or “trading.” Classification is constantly re-evaluated for consistency with corporate goals and objectives. Trading securities are recorded at fair value with subsequent changes in fair value recorded in earnings. Debt securities that management has the positive intent and ability to hold to maturity are classified as “held to maturity” and recorded at amortized cost. Securities not classified as held to maturity or trading, including equity securities with readily determinable fair values, are classified as “available for sale” and recorded at fair value, with changes in fair value excluded from earnings and reported in other comprehensive income, net of related tax. Purchase premiums and discounts are recognized in interest income, using the interest method, to arrive at periodic interest income at a constant effective yield, thereby reflecting the securities market yield. Gains and losses on the sale of securities are recorded on the trade date and are determined using the specific identification method. Declines in the fair value of held to maturity and available for sale securities below their amortized cost deemed to be OTTI are written down to fair value as determined by a cash flow analysis. To the extent the estimated cash flows do not support the amortized cost, the deficiency is considered to be due to credit loss and recognized in earnings. Unless the Company intends to sell the security, or if it is more likely than not that the Company will be required to sell the debt security before its anticipated recovery, the remainder of the OTTI charge is considered to be due to other factors, such as liquidity or interest rates, and thus is not recognized in earnings, but rather through other comprehensive income, net of related tax. The Company evaluates individual securities that have fair values below cost for six months or longer, or for a shorter period of time if considered appropriate by management, to determine if the decline in fair value is other-than-temporary. Consideration is given to the obligor of the security, whether the security is guaranteed, whether there is a projected adverse change in cash flows, the liquidity of the security, the type of security, the capital position of security issuers, and payment history of the security, amongst other factors when evaluating such securities.
LOANS HELD FOR SALE	Loans Held for Sale The Bank primarily classifies new residential real estate mortgage loans as held for sale based on intent, which is determined when loans are underwritten. Residential real estate mortgage loans not designated as held for sale are retained based upon available liquidity, for interest rate risk management and other business purposes. The Company has elected the fair value option to account for originated closed loans intended for sale. Accordingly, changes in fair value relating to loans intended for sale are recorded in earnings and are offset by changes in fair value relating to interest rate lock commitments, forward sales commitments, and forward To Be Announced ("TBA") mortgage contracts. Gains and losses on residential loan sales (sales proceeds minus carrying amount) are recorded in mortgage banking income.
LOANS	Loans Loans are carried at the principal amounts outstanding, or amortized acquired fair value in the case of acquired loans, adjusted by partial charge-offs and net of deferred loan costs or fees. For originated loans, loan fees and certain direct origination costs are deferred and amortized into interest income over the expected term of the loan using the level-yield method. When a loan is paid off, the unamortized portion is recognized in interest income. Interest income on loans is accrued based upon the daily principal amount outstanding except for loans on nonaccrual status. For acquired loans which did not show signs of credit deterioration at acquisition, interest income is also accrued based upon the daily principal amount outstanding and is then further adjusted by the accretion of any discount or amortization of any premium associated with the loan. As a general rule, loans more than 90 days past due with respect to principal or interest are classified as nonaccrual loans, or sooner if management considers such action to be prudent. However, loans that are more than 90 days past due may be kept on an accruing status if the loan is well secured and/or in the process of collection. The Company may also put a junior lien mortgage on nonaccrual status as a result of delinquency with respect to the first position, which is held by another financial institution, while the junior lien is currently performing. Income accruals are suspended on all nonaccrual loans and all previously accrued and uncollected interest is reversed against current income. A loan remains on nonaccrual status until it becomes current with respect to principal and interest (and in certain instances remains current for up to six months), the loan is liquidated, or when the loan is determined to be uncollectible and is charged-off against the allowance for loan losses. When doubt exists as to the collectability of a loan, any payments received are applied to reduce the recorded investment in the asset to the extent necessary to eliminate such doubt. For all loan portfolios, a charge-off occurs when the Company determines that a specific loan, or portion thereof, is uncollectible. This determination is made based on management's review of specific facts and circumstances of the individual loan, including assessing the viability of the customer’s business or project as a going concern, the expected cash flows to repay the loan, the value of the collateral and the ability and willingness of any guarantors to perform. In cases where a borrower experiences financial difficulties and the Company makes certain concessionary modifications to contractual terms, the loan is classified as a troubled debt restructuring (“TDR”). Modifications may include adjustments to interest rates, extensions of maturity, consumer loans where the borrower's obligations have been effectively discharged through Chapter 7 Bankruptcy and the borrower has not reaffirmed the debt to the Bank, and other actions intended to minimize economic loss and avoid foreclosure or repossession of collateral. The recorded investment of loans classified as TDRs is adjusted to reflect the changes in value, if any, resulting from the granting of a concession. Nonaccrual loans that are restructured remain on nonaccrual for a period of six months to demonstrate that the borrower can meet the restructured terms. If the restructured loan is on accrual status prior to being modified, it is reviewed to determine if the modified loan should remain on accrual status. If the borrower’s ability to meet the revised payment schedule is not reasonably assured, the loan is classified as a nonaccrual loan. Loans classified as TDRs remain classified as such for the life of the loan, except in limited circumstances, when it is determined that the borrower is performing under the modified terms and the restructuring agreement specified an interest rate greater than or equal to an acceptable market rate for a comparable new loan at the time of the restructuring
ACQUIRED LOANS	All acquired loans are recorded at fair value with no carryover of the allowance for loan losses. At acquisition, loans are also reviewed to determine if the loan has evidence of deterioration in credit quality and to review if it is probable, at acquisition, that all contractually required payments will not be collected. Such loans are deemed to be purchased credit impaired ("PCI") loans. Under the accounting model for PCI loans, the excess of cash flows expected to be collected over the carrying amount of the loans, referred to as the "accretable yield", is accreted into interest income over the life of the loans using the effective yield method. Accordingly, PCI loans are not subject to classification as nonaccrual in the same manner as originated loans. Rather, acquired loans are generally considered to be accruing loans because their interest income relates to the accretable yield recognized and not to contractual interest payments at the loan level. The difference between contractually required principal and interest payments and the cash flows expected to be collected, referred to as the "nonaccretable difference", includes estimates of both the impact of prepayments and future credit losses expected to be incurred over the life of the loans. The estimate of cash flows expected to be collected is regularly re-assessed subsequent to acquisition. These re-assessments involve updates, as necessary, of the key assumptions and estimates used in the initial estimate of fair value. Generally speaking, expected cash flows are affected by: • Changes in the expected principal and interest payments over the estimated life - Changes in expected cash flows may be driven by the credit outlook and actions taken with borrowers. Changes in expected future cash flows resulting from loan modifications are included in the assessment of expected cash flows. • Change in prepayment assumptions - Prepayments affect the estimated life of the loans, which may change the amount of interest income expected to be collected. • Change in interest rate indices for variable rate loans - Expected future cash flows are based, as applicable, on the variable rates in effect at the time of the assessment of expected cash flows. A decrease in expected cash flows in subsequent periods may indicate that the loan is impaired which would likely require the recognition of a charge-off against the allowance for loan losses or an establishment of a specific reserve. An increase in expected cash flows in subsequent periods serves, first, to reduce any previously established specific reserve by the increase in the present value of cash flows expected to be collected. Any increase above the previously established specific reserve results in a recalculation of the amount of accretable yield for the loan. The adjustment of accretable yield due to an increase in expected cash flows is accounted for as a change in estimate. The additional cash flows expected to be collected are reclassified from the nonaccretable difference to the accretable yield, and the amount of periodic accretion is adjusted accordingly over the remaining life of the loans. A PCI loan may be resolved either through receipt of payment (in full or in part) from the borrower, the sale of the loan to a third party, or foreclosure of the collateral. In the event of a sale of the loan, a gain or loss on sale would be recognized and reported within noninterest income based on the difference between the sales proceeds and the carrying amount of the loan. For PCI loans accounted for on an individual loan basis and resolved directly with the borrower, any amount received from resolution in excess of the carrying amount of the loan is recognized and reported within interest income. A refinancing or modification of a PCI loan accounted for individually is assessed to determine whether the modification represents a TDR. If the loan is considered to be a TDR, it will be included in the total impaired loans reported by the Company. The loan will continue to recognize interest income based upon the excess of cash flows expected to be collected over the carrying amount of the loan.
ALLOWANCE FOR LOAN LOSSES	The allowance for loan losses is established based upon the level of estimated probable losses in the current loan portfolio. Loan losses are charged against the allowance when management believes the collectability of a loan balance is doubtful. Subsequent recoveries, if any, are credited to the allowance. The allowance for loan losses is allocated to loan types using both a formula-based approach applied to groups of loans and an analysis of certain individual loans for impairment. The formula-based approach emphasizes loss factors derived from actual historical portfolio loss rates, which are combined with an assessment of certain qualitative factors to determine the allowance amounts allocated to the various loan categories. Allowance amounts are determined based on an estimate of the historical average annual percentage rate of loan loss for each loan category, an estimate of the incurred loss emergence and confirmation period for each loan category, and certain qualitative risk factors considered in the computation of the allowance for loan losses. The qualitative risk factors impacting the inherent risk of loss within the portfolio include the following: • National and local economic and business conditions • Level and trend of delinquencies • Level and trend of charge-offs and recoveries • Trends in volume and terms of loans • Risk selection, lending policy and underwriting standards • Experience and depth of management • Banking industry conditions and other external factors • Concentration risk The formula-based approach evaluates groups of loans with common characteristics, which consist of similar loan types with similar terms and conditions, to determine the appropriate allocation within each portfolio section. This approach incorporates qualitative adjustments based upon management’s assessment of various market and portfolio specific risk factors into its formula-based estimate. Due to the imprecise nature of the loan loss estimation process and ever changing conditions, the qualitative risk attributes may not adequately capture amounts of incurred loss in the formula-based loan loss components used to determine the Bank’s analysis of the adequacy of the allowance for loan losses. The Bank evaluates certain loans within the commercial and industrial, commercial real estate, commercial construction and small business portfolios individually for specific impairment. A loan is considered impaired when, based on current information and events, it is probable that the Bank will be unable to collect the scheduled payments of principal or interest when due according to the contractual terms of the loan agreement. Factors considered by management in determining impairment include payment status, collateral value, contractual interest rates and the probability of collecting scheduled principal and interest payments when due. Loans that experience insignificant payment delays and payment shortfalls generally are not classified as impaired. Loans are selected for evaluation based upon a change in internal risk rating, occurrence of delinquency, loan classification, troubled debt restructuring or nonaccrual status. A specific allowance amount is allocated to an individual loan when such loan has been deemed impaired and when the amount of the probable loss is able to be estimated. Estimates of loss may be determined by the present value of anticipated future cash flows, the loan’s observable fair market value, or the fair value of the collateral, if the loan is collateral dependent. However, for collateral dependent loans, the amount of the recorded investment in a loan that exceeds the fair value of the collateral less costs to sell is charged-off against the allowance for loan losses in lieu of an allocation of a specific allowance amount when such an amount has been identified definitively as uncollectible. Large groups of small-balance homogeneous loans such as the residential real estate, residential construction, home equity and other consumer portfolios are collectively evaluated for impairment. As such, the Bank does not typically identify individual loans within these groupings as impaired loans for impairment evaluation and disclosure. However, the Bank evaluates all TDRs for impairment on an individual loan basis regardless of loan type. In the ordinary course of business, the Bank enters into commitments to extend credit, commercial letters of credit, and standby letters of credit. Such financial instruments are recorded in the financial statements when they become payable. The credit risk associated with these commitments is evaluated in a manner similar to the allowance for loan losses. The reserve for unfunded lending commitments is included in other liabilities in the balance sheet. At December 31, 2015 and 2014 , the reserve for unfunded loan commitments was $1.4 million and $813,000 , respectively.
Transfers and Servicing of Financial Assets, Transfers of Financial Assets, Financings, Policy [Policy Text Block]	Transfers and Servicing of Financial Assets Transfers of financial assets are accounted for as sales when control over the assets has been surrendered. Control over transferred assets is deemed to be surrendered when (1) the assets have been isolated from the Company, (2) the transferee obtains the right (free of conditions that constrain it from taking advantage of that right) to pledge or exchange the transferred assets, and (3) the Company does not maintain effective control over the transferred assets through an agreement to repurchase them before their maturity. Loans held for sale are generally sold with servicing rights released, however if rights are retained, servicing assets are recognized as separate assets. Servicing rights are originally recorded at fair value within other assets, but subsequently are amortized in proportion to and over the period of estimated net servicing income, and are assessed for impairment at each reporting date. Fair value is based on market prices for comparable mortgage servicing contracts, when available, or alternatively, is based on a valuation model that calculates the present value of estimated future net servicing income. The valuation model incorporates assumptions that market participants would use in estimating future net servicing income, such as the cost to service, the discount rate, the custodial earnings rate, an inflation rate, ancillary income, prepayment speeds, default rates and losses. Impairment is determined by stratifying the rights based on predominant characteristics, such as interest rate, loan type and investor type. Impairment is recognized through a valuation allowance, to the extent that fair value is less than the capitalized amount. If the Company later determines that all or a portion of the impairment no longer exists, a reduction of the allowance may be recorded as an increase to income. Servicing fee income is recorded for fees earned for servicing loans for investors. The fees are based on a contractual percentage of the outstanding principal or a fixed amount per loan, and are recorded as income when earned. The amortization of mortgage servicing rights is recorded as a reduction of loan servicing fee income.
FEDERAL HOME LOAN BANK STOCK	Federal Home Loan Bank Stock The Company, as a member of the Federal Home Loan Bank (“FHLB”) of Boston, is required to maintain an investment in capital stock of the FHLB. Based on redemption provisions, the stock has no quoted market value and is carried at cost. The Company continually reviews its investment to determine if OTTI exists. The Company reviews recent public filings, rating agency analysis and other factors, when making its determination.
BANK PREMISES AND EQUIPMENT	Bank Premises and Equipment Land is carried at cost. Bank premises and equipment are stated at cost less accumulated depreciation. Depreciation is computed using the straight-line convention method over the estimated useful lives of the assets. Leasehold improvements are amortized over the shorter of the lease terms or the estimated useful lives of the improvements. Expected terms include lease option periods to the extent that the exercise of such options is reasonably assured, not to exceed fifteen years.
GOODWILL AND IDENTIABLE INTANGIBLE ASSETS	Goodwill and Other Intangible Assets Goodwill represents the excess of the purchase price over the net fair value of acquired businesses and is not amortized. Goodwill is evaluated for impairment at least annually, or more often if warranted, using a combined qualitative and quantitative impairment approach. The initial qualitative approach assesses whether the existence of events or circumstances led to a determination that it is more likely than not that the fair value of a reporting unit is less than its carrying amount. If, after assessing the totality of events and circumstances, the Company determines it is more likely than not that the fair value is less than carrying value, the two step quantitative impairment test is performed. Step one of the quantitative impairment test compares book value to the fair value of the reporting unit. If step one is failed, a detailed step two analysis is performed, which involves measuring the excess of the fair value of the reporting unit, as determined in step one, over the aggregate fair value of the individual assets, liabilities, and identifiable intangibles as if the reporting unit was being acquired in a business combination. Other intangible assets subject to amortization consist of core deposit intangibles, noncompete agreements, customer lists and market-based favorable or unfavorable lease positions at time of acquisition, and are amortized over the estimated lives of the intangibles using a method that approximates the amount of economic benefits that are realized by the Company. Other intangible assets are reviewed for impairment whenever events or changes in circumstances indicate that the carrying amount of the assets may not be recoverable. The range of useful lives is as follows: Core deposit intangibles 9-10 years Noncompete agreements 3 years Customer lists 10 years Leases 7.5-29 years The determination of which intangible assets have finite lives is subjective, as is the determination of the amortization period for such intangible assets.
IMPAIRMENT OF LONG-LIVED ASSETS OTHER THAN GOODWILL	of Long-Lived Assets Other Than Goodwill The Company reviews long-lived assets, including premises and equipment, for impairment whenever events or changes in business circumstances indicate that the remaining useful life may warrant revision or that the carrying amount of the long-lived asset may not be fully recoverable. The Company performs undiscounted cash flow analysis to determine if impairment exists. If impairment is determined to exist, any related impairment loss is calculated based on fair value. Impairment losses on assets to be disposed of, if any, are based on the estimated proceeds to be received, less costs of disposal.
CASH SURRENDER VALUE OF LIFE INSURANCE POLICIES	Cash Surrender Value of Life Insurance Policies Increases in the cash surrender value (“CSV”) of life insurance policies, as well as benefits received net of any CSV, are recorded in other noninterest income, and are not subject to income taxes. The CSV of the policies are recorded as assets of the Bank, with liabilities recognized for any split dollar arrangements associated with the policies. The Company reviews the financial strength of the insurance carriers prior to the purchase of life insurance policies and no less than annually thereafter. A life insurance policy with any individual carrier is limited to 15% of Tier 1 capital (as defined for regulatory purposes) and the total CSV of life insurance policies is limited to 25% of Tier 1 capital.
OTHER REAL ESTATE OWNED AND OTHER FORECLOSED ASSETS	Real estate properties and other assets, which have served as collateral to secure loans, are held for sale and are initially recorded at fair value less estimated costs to sell at the date control is established, resulting in a new cost basis. The amount by which the recorded investment in the loan exceeds the fair value (net of estimated costs to sell) of the foreclosed asset is charged to the allowance for loan losses. Subsequent declines in the fair value of the foreclosed asset below the new cost basis are recorded through the use of a valuation allowance. Subsequent increases in the fair value are recorded as reductions in the valuation allowance, but not below zero. Upon a sale of a foreclosed asset, any excess of the carrying value over the sale proceeds is recognized as a loss on sale. Any excess of sale proceeds over the carrying value of the foreclosed asset is first applied as a recovery to the valuation allowance, if any, with the remainder being recognized as a gain on sale. Operating expenses and changes in the valuation allowance relating to foreclosed assets are included in other noninterest expense.
DERIVATIVES	Derivatives Derivative instruments are carried at fair value in the Company’s financial statements. The accounting for changes in the fair value of a derivative instrument is determined by whether it has been designated and qualifies as part of a hedging relationship, and further, by the type of hedging relationship. At the inception of a hedge, the Company documents certain items, including but not limited to the following: the relationship between hedging instruments and hedged items, the Company risk management objectives, hedging strategies, and the evaluation of hedge transaction effectiveness. Documentation includes linking all derivatives designated as fair value or cash flow hedges to specific assets and liabilities on the balance sheet or to specific forecasted transactions. For those derivative instruments that are designated and qualify for special hedge accounting, the Company designates the hedging instrument, based upon the exposure being hedged, as either a fair value hedge or a cash flow hedge. For derivative instruments that are designated and qualify as a cash flow hedge (i.e., hedging the exposure to variability in expected future cash flows that is attributable to a particular risk), the effective portion of the gain or loss on the derivative instrument is reported as a component of other comprehensive income, net of related tax, and reclassified into earnings in the same period or periods during which the hedged transactions affect earnings. The remaining gain or loss on the derivative instrument in excess of the cumulative change in the present value of future cash flows of the hedged item (i.e., the ineffective portion), if any, is recognized in current earnings during the period. For derivative instruments designated and qualifying as a fair value hedge (i.e., hedging the exposure to changes in the fair value of an asset or liability or an identified portion thereof that is attributable to the hedged risk), the gain or loss on the derivative instrument, as well as the offsetting gain or loss on the hedged item attributable to the hedged risk, are recognized in current earnings during the period of the change in fair values. Hedge accounting is discontinued prospectively when (1) a derivative is no longer highly effective in offsetting changes in the fair value or cash flow of a hedged item, (2) a derivative expires or is settled, (3) it is no longer likely that a forecasted transaction associated with the hedge will occur, or (4) it is determined that designation of a derivative as a hedge is no longer appropriate. To the extent the Company enters into new or re-designates existing hedging relationships, it is the Company's policy to include the Overnight Index Swap Rate in the spectrum of available benchmark interest rates for hedge accounting. For derivative instruments not designated as hedging instruments, such as loan level derivatives, foreign exchange contracts and mortgage derivatives, changes in fair value are recognized in other noninterest income during the period of change.
RETIREMENT PLANS	Retirement Plans The Company has various retirement plans in place for current and former employees, including postretirement benefit plans, supplemental executive retirement plans, frozen multiemployer pension plans, deferred compensation plans as well as other benefits. The postretirement benefit plans and the supplemental executive retirement plans are unfunded and therefore have no plan assets. The actuarial cost method used to compute the benefit liabilities and related expense is the projected unit credit method. The projected benefit obligation is principally determined based on the present value of the projected benefit distributions at an assumed discount rate. The discount rate which is utilized is based on the investment yield of high quality corporate bonds available in the market place with maturities approximately equal to projected cash flows of future benefit payments as of the measurement date. Periodic benefit expense (or income) includes service costs and interest costs based on the assumed discount rate, amortization of prior service costs due to plan amendments and amortization of actuarial gains and losses. The amortization of actuarial gains and losses is determined using the 10% corridor minimum amortization approach and is taken over the average remaining future working lifetime of the plan participants. The underfunded status of the plans is recorded as a liability on the balance sheet. The multiemployer pension plans assets are determined based on fair value, generally representing observable market prices. The actuarial cost method used to compute the pension liabilities and related expense is the unit credit method. The pension expense is equal to the plan contribution requirement of the Company for the plan year.
STOCK-BASED COMPENSATION	Stock-Based Compensation The Company recognizes stock-based compensation based on the grant-date fair value of the award adjusted for forfeitures. For restricted stock awards and units, the Company recognizes compensation expense ratably over the vesting period for the fair value of the award, measured at the grant date. For stock option awards, the Company values awards granted using the Black-Scholes option-pricing model. The Company recognizes compensation expense for these awards on a straight-line basis over the requisite service period for the entire award (straight-line attribution method), ensuring that the amount of compensation cost recognized at any date at least equals the portion of the grant-date fair value of the award that is vested at that time.
INCOME TAXES	Taxes Deferred income tax assets and liabilities are determined using the asset and liability (or balance sheet) method of accounting for income taxes. Under this method, deferred tax assets and liabilities are recognized for the future tax consequences attributable to differences between the financial statement carrying amounts of existing assets and liabilities and their respective tax bases. If current available information raises doubt as to the realization of the deferred tax assets, a valuation allowance is established. Deferred tax assets and liabilities are measured using enacted tax rates expected to apply to taxable income in the years in which those temporary differences are expected to be recovered or settled. The effect on deferred tax assets and liabilities of a change in enacted tax rates is recognized in income in the period that includes the enactment date. Income taxes are allocated to each entity in the consolidated group based on its share of taxable income. Management exercises significant judgment in evaluating the amount and timing of recognition of the resulting tax liabilities and assets, including projections of future taxable income. Additionally, a liability for unrecognized tax benefits is recorded for uncertain tax positions taken by the Company on its tax returns for which there is less than a 50% likelihood of being recognized upon a tax examination. Tax credits generated from the New Markets Tax Credit program are reflected in earnings when realized for federal income tax purposes.
Low Income Housing Tax Credits Policy Text Block [Policy Text Block]	Low Income Housing Tax Credits The Company accounts for its investments in qualified affordable housing projects using the proportional amortization method. Under the proportional amortization method the Company amortizes the initial cost of the investment in proportion to the tax credits and other tax benefits received, and recognizes the net investment performance as a component of income tax expense.
ASSETS UNDER ADMININSTRATION	Assets Under Administration Assets held in a fiduciary or agency capacity for customers are not included in the accompanying consolidated balance sheet, as such assets are not assets of the Company. Revenue from administrative and management activities associated with these assets is recorded on an accrual basis.
Extinguishment of Debt [Policy Text Block]	Extinguishment of Debt Upon extinguishment of an outstanding debt, the Company records the difference between the exit price and the net carrying amount of the debt as a gain or loss on the extinguishment. The gain or loss would be a component of other noninterest income or other noninterest expense, respectively.
EARNINGS PER SHARE	Basic earnings per share is calculated using the two-class method. The two-class method is an earnings allocation formula under which earnings per share is calculated from common stock and participating securities according to dividends declared and participation rights in undistributed earnings. Under this method, all earnings distributed and undistributed, are allocated to participating securities and common shares based on their respective rights to receive dividends. Unvested share-based payment awards that contain nonforfeitable rights to dividends are considered participating securities (i.e. unvested time-vested restricted stock), not subject to performance based measures. Basic earnings per share is calculated by dividing net income by the weighted average number of common shares outstanding (inclusive of participating securities). Diluted earnings per share have been calculated in a manner similar to that of basic earnings per share except that the weighted average number of common shares outstanding is increased to include the number of additional common shares that would have been outstanding if all potentially dilutive common shares (such as those resulting from the exercise of stock options or the attainment of performance measures) were issued during the period, computed using the treasury stock method.
COMPREHENSIVE INCOME	Comprehensive Income Comprehensive income consists of net income and other comprehensive income. Other comprehensive income includes unrealized gains and losses on securities available for sale, unrealized losses related to factors other than credit on debt securities, unrealized gains and losses on cash flow hedges, deferred gains on hedge accounting transactions, and changes in the funded status of the Company’s postretirement and supplemental retirement plans.
FAIR VALUE MEASUREMENTS	Fair Value Measurements In general, fair values of financial instruments are based upon quoted market prices, where available. If such quoted market prices are not available, fair value is based upon developed models that primarily use, as inputs, observable market-based parameters. Valuation adjustments may be made to ensure that financial statements are recorded at fair value. These adjustments may include amounts to reflect counterparty credit quality and the Company’s creditworthiness, among other things, as well as unobservable parameters.
New Accounting Pronouncements, Policy [Policy Text Block]	Recent Accounting Standards Financial Accounting Standards Board ("FASB") Accounting Standards Codification ("ASC") Topic 825-10 "Financial Instruments - Overall Recognition and Measurement of Financial Assets and Financial Liabilities" Update No. 2016-1. Update No. 2016-1 was issued in January 2016 to amend the guidance in U.S. GAAP on the classification and measurement of financial instruments. Although the Accounting Standard Update ("ASU") retains many current requirements, it significantly revises an entity's accounting related to (1) the classification and measurement of investments in equity securities and (2) the presentation of certain fair value changes for financial liabilities measured at fair value. The ASU also amends certain disclosure requirements associated with the fair value of financial instruments and various other aspects of recognition, measurement, presentation and disclosure of financial instruments. For public entities, the amendments in this update are effective for fiscal years beginning after December 15, 2017, including interim periods within those fiscal years. Early adoption is permitted for only certain guidance. The Company is currently assessing the impact of the adoption of this standard on the Company's consolidated financial position. FASB ASC Topic 805 "Business Combinations" Update No. 2015-16. Update No. 2015-16 was issued in September 2015, requiring an acquirer to recognize adjustments to provisional amounts that are identified during the measurement period in the reporting period in which the adjustment amounts are determined. The amendments in this update require that the acquirer record, in the same period's financial statements, the effect on earnings of changes in depreciation, amortization, or other income effects, if any, as a result of the change to the provisional amounts, calculated as if the accounting has been completed at the acquisition date. Additionally, an entity is required to present separately on the face of the income statement or disclose in the notes the portion of the amount recorded in current-period earnings by line item that would have been recorded in previous reporting periods if the adjustment to the provisional amounts had been recognized as of the acquisition date. For public entities, the amendments in this update are effective for fiscal years beginning after December 15, 2015, including interim periods within those fiscal years. Early adoption is permitted for financial statements that have not been issued. The adoption of this standard is not expected to have a material impact on the Company's consolidated financial position. FASB ASC Subtopic 835-30 "Interest-Imputation of Interest" Update No. 2015-15. Update No. 2015-15 was issued in August 2015 due to the guidance in update 2015-03 not addressing presentation or subsequent measurement of debt issuance costs related to line-of-credit arrangements. Given the absence of authoritative guidance within update 2015-03 for debt issuance costs related to line-of-credit arrangements, the SEC staff would not object to an entity deferring and presenting debt issuance costs as an asset and subsequently amortizing the deferred debt issuance costs ratably over the term of the line-of-credit arrangement, regardless of whether there are any outstanding borrowings on the line-of-credit arrangement. The adoption of this standard is not expected to have a material impact on the Company's consolidated financial position. FASB ASC Topic 606 "Revenue from Contracts with Customers" Update No. 2015-14. Update No. 2015-14 was issued in August 2015 to defer the effective date of update 2014-09 for all entities by one year. Public business entities, certain not-for-profit entities, and certain employee benefit plans should apply the guidance in update 2014-09 to annual reporting periods beginning after December 15, 2017, including interim reporting periods within that reporting period. Earlier adoption is permitted only as of annual reporting periods beginning after December 15, 2016, including interim reporting periods within that reporting period. The Company is currently assessing the potential impact of this amendment on the Company's consolidated financial position. FASB ASC Topic 805 "Business Combinations - Pushdown Accounting" Update No. 2015-08. Update No. 2015-08 was issued in May 2015 to remove references and to amend certain previously issued pushdown accounting guidance. The adoption of this standard is not expected to have a material impact on the Company's consolidated financial position. FASB ASC Subtopic 350-40 "Intangibles - Goodwill and Other - Internal - Use Software" Update No. 2015-05. Update No. 2015-05 was issued in April 2015 to provide guidance to customers about whether a cloud computing arrangement includes a software license. If a cloud computing arrangement includes a software license, then the customer should account for the software license element of the arrangement consistent with the acquisition of other software licenses. If a cloud computing arrangement does not include a software license, the customer should account for the arrangement as a service contract. The guidance will not change current accounting for service contracts. The amendments in this update are effective for fiscal years, and interim periods within those fiscal years, beginning after December 15, 2015. Early adoption is permitted. The adoption of this standard is not expected to have a material impact on the Company's consolidated financial position. FASB ASC Subtopic 835-30 "Interest - Imputation of Interest" Update No. 2015-03. Update No. 2015-03 was issued in April 2015 to simplify presentation of debt issuance costs. The amendments in this update require that debt issuance costs related to a recognized debt liability be presented in the balance sheet as a direct deduction from the carrying amount of that debt liability, consistent with debt discounts. The recognition and measurement guidance for debt issuances costs are not affected by the amendments in this update. The amendments in this update are effective for fiscal years, and interim periods within those fiscal years, beginning after December 15, 2015. Early adoption is permitted. The adoption of this standard is not expected to have a material impact on the Company's consolidated financial position. FASB ASC Topic 810 "Consolidation" Update No. 2015-02. Update No. 2015-02 was issued in February 2015 to respond to stakeholders' concerns about the current accounting for consolidation of certain legal entities. The amendments in this update affect reporting entities that are required to evaluate whether they should consolidate certain legal entities. All legal entities are subject to reevaluation under the revised consolidation model. Specifically, the amendments: (1) modify the evaluation of whether limited partnerships and similar legal entities are variable interest entities (VIEs) or voting interest entities, (2) eliminate the presumption that a general partner should consolidate a limited partnership, (3) affect the consolidation analysis of reporting entities that are involved with VIEs, particularly those that have fee arrangements and related party relationships, and (4) provide a scope exception from consolidation guidance for reporting entities with interests in legal entities that are required to comply with or operate in accordance with requirements that are similar to those in Rule 2a-7 of the Investment Company Act of 1940 for registered money market funds. The amendments in this update are effective for fiscal years, and interim periods within those fiscal years, beginning after December 15, 2015. Early adoption is permitted. The adoption of this standard is not expected to have a material impact on the Company's consolidated financial position. FASB ASC Subtopic 225-20 "Income Statement - Extraordinary and Unusual Items" Update No. 2015-01. Update No. 2015-01 was issued in January 2015 to simplify the income statement presentation requirements in Subtopic 225-20 by eliminating the concept of extraordinary items. Extraordinary items are events and transactions that are distinguished by their unusual nature and by the infrequency of their occurrence. The amendments in this update are effective for fiscal years, and interim periods within those fiscal years, beginning after December 15, 2015. Early adoption is permitted. The adoption of this standard is not expected to have a material impact on the Company's consolidated financial position.

SUMMARY OF SIGNIFICANT ACCOUN32

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Tables)	12 Months Ended
	Dec. 31, 2015
Accounting Policies [Abstract]
Schedule of Finite-Lived Intangible Asses Useful Lives	The range of useful lives is as follows: Core deposit intangibles 9-10 years Noncompete agreements 3 years Customer lists 10 years Leases 7.5-29 years

ACQUISITIONS (Tables)

ACQUISITIONS (Tables)	12 Months Ended
	Dec. 31, 2015
Business Acquisition [Line Items]
Schedule of Estimated Fair Value of Assets Acquired and Liabilities Assumed	The following table summarizes the estimated fair value of the assets acquired and liabilities assumed as of the date of the acquisition: Net Assets Acquired at Fair Value (Dollars in thousands) Assets Cash $ 41,957 Investments 43,585 Loans 463,927 Premises and equipment 9,346 Goodwill 30,662 Core deposit and other intangibles 3,936 Other assets 46,920 Total assets acquired 640,333 Liabilities Deposits 432,250 Borrowings 51,209 Other liabilities 15,054 Total liabilities assumed 498,513 Purchase price $ 141,820
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities Acquired During Period [Table Text Block]	The following is a summary of these PCI loans associated with the acquisition as of the date acquired: As of February 20, 2015 (Dollars in thousands) Contractually required principal and interest at acquisition $ 4,358 Contractual cash flows not expected to be collected (1,596 ) Expected cash flows at acquisition 2,762 Interest component of expected cash flows (319 ) Basis in PCI loans at acquisition - estimated fair value $ 2,443
Business Acquisition, Pro Forma Information [Table Text Block]	The selected pro forma financial information is presented for illustrative purposes only and is not necessarily indicative of the financial results of the combined companies had the acquisition actually been completed at the beginning of the periods presented, nor does it indicate future results for any other interim or full-year period. Years Ended December 31 2015 2014 (Dollars in thousands) Net interest income after provision for loan losses $ 216,086 $ 203,296 Net income $ 69,816 $ 60,896

SECURITIES (Tables)

SECURITIES (Tables)	12 Months Ended
	Dec. 31, 2015
Investments, Debt and Equity Securities [Abstract]
Schedule of Available-for-sale Securities and Held-to-maturity Securties	The following table presents a summary of the amortized cost, gross unrealized holding gains and losses, other-than-temporary impairment recorded in other comprehensive income and fair value of securities available for sale and securities held to maturity for the periods indicated: December 31, 2015 December 31, 2014 Amortized Gross Gross Unrealized Fair Amortized Gross Gross Unrealized Fair (Dollars in thousands) Available for sale securities U.S. government agency securities $ 29,958 $ 261 $ (4 ) $ 30,215 $ 41,369 $ 139 $ (22 ) $ 41,486 Agency mortgage-backed securities 207,693 4,227 (983 ) 210,937 211,168 7,203 (693 ) 217,678 Agency collateralized mortgage obligations 64,157 179 (752 ) 63,584 63,059 599 (623 ) 63,035 State, county, and municipal securities 4,543 116 — 4,659 5,106 117 — 5,223 Single issuer trust preferred securities issued by banks 2,865 8 (81 ) 2,792 2,913 12 (16 ) 2,909 Pooled trust preferred securities issued by banks and insurers (1) 2,217 — (645 ) 1,572 7,906 195 (1,780 ) 6,321 Small business administration pooled securities 40,472 87 (110 ) 40,449 — — — — Equity securities 13,235 374 (568 ) 13,041 11,572 567 (237 ) 11,902 Total available for sale securities 365,140 5,252 (3,143 ) 367,249 343,093 8,832 (3,371 ) 348,554 Held to maturity securities U.S. treasury securities 1,009 55 — 1,064 1,010 63 — 1,073 Agency mortgage-backed securities 167,134 3,460 (219 ) 170,375 159,522 5,422 — 164,944 Agency collateralized mortgage obligations 267,348 1,195 (3,652 ) 264,891 198,220 1,842 (3,478 ) 196,584 State, county, and municipal securities 225 2 — 227 424 4 — 428 Single issuer trust preferred securities issued by banks 1,500 22 — 1,522 1,500 — (23 ) 1,477 Small business administration pooled securities 35,291 437 (64 ) 35,664 9,775 299 — 10,074 Corporate debt securities 5,000 6 — 5,006 5,002 117 — 5,119 Total held to maturity securities 477,507 5,177 (3,935 ) 478,749 375,453 7,747 (3,501 ) 379,699 Total $ 842,647 $ 10,429 $ (7,078 ) $ 845,998 $ 718,546 $ 16,579 $ (6,872 ) $ 728,253 (1) Gross unrealized gains and gross unrealized losses include $ 230,000 of net non-credit related OTTI at December 31, 2014 .
Summary of Realized Gains and Losses on Available-for-sale Securities	The following table shows the gross realized gains and losses on available for sale securities for the periods indicated: Years Ended December 31 2015 2014 2013 (Dollars in thousands) Equity securities classified as available for sale Gross realized gains $ 20 $ 91 $ (28 ) Gross realized losses (99 ) — — Net realized gain (loss) on equity securities $ (79 ) $ 91 $ (28 ) Fixed income securities classified as available for sale Gross realized gains $ 798 $ 121 $ 258 Gross realized losses (1,124 ) (21 ) — Net realized gain (loss) on fixed income securities $ (326 ) $ 100 $ 258 When securities are sold, the adjusted cost of the specific security sold is used to compute the gain or loss on the sale. The following table shows the gross realized gains and losses on available for sale securities for the periods indicated: Years Ended December 31 2015 2014 2013 (Dollars in thousands) Equity securities classified as available for sale Gross realized gains $ 20 $ 91 $ (28 ) Gross realized losses (99 ) — — Net realized gain (loss) on equity securities $ (79 ) $ 91 $ (28 ) Fixed income securities classified as available for sale Gross realized gains $ 798 $ 121 $ 258 Gross realized losses (1,124 ) (21 ) — Net realized gain (loss) on fixed income securities $ (326 ) $ 100 $ 258
Schedule of Contractual Maturities of Securities	A schedule of the contractual maturities of securities available for sale and securities held to maturity as of December 31, 2015 is presented below: Available for Sale Held to Maturity Amortized Fair Amortized Fair (Dollars in thousands) Due in one year or less $ 499 $ 500 $ 5,250 $ 5,258 Due after one year to five years 34,384 34,715 49 49 Due after five to ten years 91,251 91,178 34,018 34,545 Due after ten years 225,771 227,815 438,190 438,897 Total debt securities 351,905 354,208 477,507 478,749 Equity securities 13,235 13,041 — — Total $ 365,140 $ 367,249 $ 477,507 $ 478,749
Schedule of Gross Unrealized Losses and Fair Value of Investments	December 31, 2015 Less than 12 months 12 months or longer Total Description of securities # of Fair Value Unrealized Fair Unrealized Fair Value Unrealized (Dollars in thousands) U.S. government agency securities 3 $ 1,990 $ (4 ) $ — $ — $ 1,990 $ (4 ) Agency mortgage-backed securities 57 112,648 (1,062 ) 4,297 (140 ) 116,945 (1,202 ) Agency collateralized mortgage obligations 23 147,707 (1,420 ) 80,927 (2,984 ) 228,634 (4,404 ) Single issuer trust preferred securities issued by banks and insurers 2 1,018 (33 ) 1,018 (48 ) 2,036 (81 ) Pooled trust preferred securities issued by banks and insurers 1 — — 1,572 (645 ) 1,572 (645 ) Small business administration pooled securities 3 37,986 (174 ) — — 37,986 (174 ) Equity securities 34 3,481 (189 ) 4,971 (379 ) 8,452 (568 ) Total temporarily impaired securities 123 $ 304,830 $ (2,882 ) $ 92,785 $ (4,196 ) $ 397,615 $ (7,078 ) December 31, 2014 Less than 12 months 12 months or longer Total Description of securities # of Fair Value Unrealized Fair Unrealized Fair Value Unrealized (Dollars in thousands) U.S.government agency securities 22 $ 21,950 $ (22 ) $ — $ — $ 21,950 $ (22 ) Agency mortgage-backed securities 17 3,471 (1 ) 42,222 (692 ) 45,693 (693 ) Agency collateralized mortgage obligations 14 35,083 (331 ) 94,974 (3,770 ) 130,057 (4,101 ) Single issuer trust preferred securities issued by banks and insurers 2 2,553 (39 ) — — 2,553 (39 ) Pooled trust preferred securities issued by banks and insurers 2 — — 2,681 (1,356 ) 2,681 (1,356 ) Equity securities 23 1,480 (74 ) 4,072 (163 ) 5,552 (237 ) Total temporarily impaired securities 80 $ 64,537 $ (467 ) $ 143,949 $ (5,981 ) $ 208,486 $ (6,448 )
Schedule of Other Than Temporary Impairment	The following table shows the total OTTI that the Company recorded for the periods indicated: Years Ended December 31 2015 2014 2013 (Dollars in thousands) Gross change in OTTI recorded on certain investments $ — $ 2,098 $ 588 Portion of OTTI recognized in OCI — (2,098 ) (588 ) Total credit related OTTI recognized in earnings $ — $ — $ —
Summary of Cumulative Credit Related Component of OTTI	The following table shows the cumulative credit related component of OTTI for the periods indicated: 2015 2014 2013 (Dollars in thousands) Balance at beginning of period $ (9,997 ) $ (9,997 ) $ (10,847 ) Add Incurred on securities not previously impaired — — — Incurred on securities previously impaired — — — Less Securities sold during the period 9,997 — 850 Reclassification due to changes in Company’s intent — — — Increases in cash flow expected to be collected — — — Balance at end of period $ — $ (9,997 ) $ (9,997 )

LOANS, ALLOWANCE FOR LOAN LOS35

LOANS, ALLOWANCE FOR LOAN LOSSES AND CREDIT QUALITY (Tables)	12 Months Ended
	Dec. 31, 2015
Loans, Allowance for Loan Losses and Credit Quality [Abstract]
Schedule of Allowance for Loan Losses	The following table summarizes changes in the allowance for loan losses by loan category and bifurcates the amount of allowance allocated to each loan category based on collective impairment analysis and loans evaluated individually for impairment: December 31, 2015 Commercial Commercial Commercial Small Residential Home Other Consumer Total (Dollars in thousands) Allowance for loan losses Beginning balance $ 15,573 $ 25,873 $ 3,945 $ 1,171 $ 2,834 $ 4,956 $ 748 $ 55,100 Charge-offs (2,010 ) (330 ) — (267 ) (285 ) (710 ) (1,316 ) (4,918 ) Recoveries 1,593 1,073 — 264 133 356 724 4,143 Provision (benefit) (1,354 ) 711 1,421 96 (92 ) 287 431 1,500 Ending balance $ 13,802 $ 27,327 $ 5,366 $ 1,264 $ 2,590 $ 4,889 $ 587 $ 55,825 Ending balance: collectively evaluated for impairment $ 13,619 $ 27,123 $ 5,366 $ 1,260 $ 1,312 $ 4,651 $ 564 $ 53,895 Ending balance: individually evaluated for impairment $ 183 $ 204 $ — $ 4 $ 1,278 $ 238 $ 23 $ 1,930 Financing receivables ending balance: Collectively evaluated for impairment $ 838,129 $ 2,619,294 $ 373,064 $ 95,225 $ 614,014 $ 921,563 $ 14,427 $ 5,475,716 Individually evaluated for impairment 5,147 22,986 304 1,021 15,405 5,989 558 51,410 Purchased credit impaired loans — 11,154 — — 9,187 251 3 20,595 Total loans by group $ 843,276 $ 2,653,434 $ 373,368 $ 96,246 $ 638,606 $ 927,803 $ 14,988 $ 5,547,721 (1) December 31, 2014 Commercial Commercial Commercial Small Residential Home Other Consumer Total (Dollars in thousands) Allowance for loan losses Beginning balance $ 15,622 $ 24,541 $ 3,371 $ 1,215 $ 2,760 $ 5,036 $ 694 $ 53,239 Charge-offs (2,097 ) (5,454 ) — (605 ) (826 ) (750 ) (1,215 ) (10,947 ) Recoveries 462 404 — 275 424 249 591 2,405 Provision (benefit) $ 1,586 $ 6,382 $ 574 $ 286 $ 476 $ 421 $ 678 $ 10,403 Ending balance $ 15,573 $ 25,873 $ 3,945 $ 1,171 $ 2,834 $ 4,956 $ 748 $ 55,100 Ending balance: collectively evaluated for impairment $ 15,161 $ 25,676 $ 3,945 $ 1,164 $ 1,334 $ 4,694 $ 710 $ 52,684 Ending balance: individually evaluated for impairment $ 412 $ 197 $ — $ 7 $ 1,500 $ 262 $ 38 $ 2,416 Financing receivables ending balance: Collectively evaluated for impairment $ 856,185 $ 2,304,099 $ 265,501 $ 84,159 $ 505,799 $ 858,305 $ 16,335 $ 4,890,383 Individually evaluated for impairment 4,654 30,729 311 1,088 15,055 5,330 868 58,035 Purchased credit impaired loans — 12,495 182 — 9,405 228 5 22,315 Total loans by group $ 860,839 $ 2,347,323 $ 265,994 $ 85,247 $ 530,259 $ 863,863 $ 17,208 $ 4,970,733 (1) December 31, 2013 Commercial Commercial Commercial Small Residential Other Consumer Total (Dollars in thousands) Allowance for loan losses Beginning balance $ 13,461 $ 22,598 $ 2,811 $ 1,524 $ 2,930 $ 7,703 $ 807 $ 51,834 Charge-offs (2,683 ) (3,587 ) (308 ) (773 ) (622 ) (1,370 ) (1,175 ) (10,518 ) Recoveries 272 206 100 279 143 135 588 1,723 Provision (benefit) 4,572 5,324 768 185 309 (1,432 ) 474 10,200 Ending balance $ 15,622 $ 24,541 $ 3,371 $ 1,215 $ 2,760 $ 5,036 $ 694 $ 53,239 Ending balance: collectively evaluated for impairment $ 14,472 $ 23,776 $ 3,371 $ 1,106 $ 1,196 $ 4,920 $ 624 $ 49,465 Ending balance: individually evaluated for impairment $ 1,150 $ 765 $ — $ 109 $ 1,564 $ 116 $ 70 $ 3,774 Financing receivables ending balance: Collectively evaluated for impairment $ 775,053 $ 2,191,132 $ 223,562 $ 75,337 $ 515,854 $ 816,925 $ 18,845 $ 4,616,708 Individually evaluated for impairment 9,148 39,516 100 1,903 15,200 4,890 1,298 72,055 Purchase credit impaired loans 1 18,612 197 — 10,389 326 19 29,544 Total loans by group $ 784,202 $ 2,249,260 $ 223,859 $ 77,240 $ 541,443 $ 822,141 $ 20,162 $ 4,718,307 (1) (1) The amount of net deferred fees on loans and net unamortized discounts on acquired loans not deemed to be PCI included in the ending balance was $10.9 million , $4.7 million , and $3.9 million at December 31, 2015 , 2014 , and 2013 , respectively.
Schedule of Internal Risk-Rating Categories for the Company's Commercial Portfolio	The following table details the internal risk-rating categories for the Company’s commercial portfolio: December 31, 2015 Category Risk Commercial and Commercial Real Commercial Small Business Total (Dollars in thousands) Pass 1 - 6 $ 765,753 $ 2,484,025 $ 363,781 $ 93,008 $ 3,706,567 Potential weakness 7 54,375 112,022 7,678 2,444 176,519 Definite weakness 8 23,073 56,276 1,909 732 81,990 Partial loss probable 9 75 1,111 — 62 1,248 Definite loss 10 — — — — — Total $ 843,276 $ 2,653,434 $ 373,368 $ 96,246 $ 3,966,324 December 31, 2014 Category Risk Commercial and Commercial Real Commercial Small Business Total (Dollars in thousands) Pass 1 - 6 $ 801,578 $ 2,196,109 $ 248,696 $ 81,255 $ 3,327,638 Potential weakness 7 37,802 82,372 15,464 2,932 138,570 Definite weakness 8 20,241 67,571 1,834 949 90,595 Partial loss probable 9 1,218 1,271 — 111 2,600 Definite loss 10 — — — — — Total $ 860,839 $ 2,347,323 $ 265,994 $ 85,247 $ 3,559,403
Schedule of Weighted Average FICO Scores and Weighted Average Combined LTV Ratio	December 31 2015 2014 Residential portfolio FICO score (re-scored)(1) 742 739 LTV (re-valued)(2) 61.4 % 67.1 % Home equity portfolio FICO score (re-scored)(1) 765 764 LTV (re-valued)(2) 55.8 % 53.6 % (1) The average FICO scores above are based upon rescores available from November and origination score data for loans booked between December 1 and December 31, for the years indicated. (2) The combined LTV ratios for December 31, 2015 are based upon updated automated valuations as of March 31, 2015 and actual score data for loans booked from April 1, 2015 through December 31, 2015. The combined LTV ratios for December 31, 2014 are based upon updated automated valuations as of February 28, 2013 and actual score data for loans booked from March 1, 2013 through December 31, 2014.
Schedule of Nonaccrual Loans	The following table shows nonaccrual loans at the dates indicated: December 31 2015 2014 (Dollars in thousands) Commercial and industrial $ 3,699 $ 2,822 Commercial real estate 7,856 7,279 Commercial construction 304 311 Small business 239 246 Residential real estate 8,795 8,697 Home equity 6,742 8,038 Other consumer 55 — Total nonaccrual loans(1) $ 27,690 $ 27,393 (1) Included in these amounts were $5.2 million nonaccruing TDRs at both December 31, 2015 and 2014 , respectively.
Foreclosed Residential Real Estate Property [Table Text Block]	The following table shows information regarding foreclosed residential real estate property at the date indicated: December 31, 2015 (Dollars in thousands) Foreclosed residential real estate property held by the creditor $ 1,430 Recorded investment in mortgage loans collateralized by residential real estate property that are in the process of foreclosure $ 285
Schedule of the Age Analysis of Past Due Financing Receivables	The following table shows the age analysis of past due financing receivables as of the dates indicated: December 31, 2015 30-59 days 60-89 days 90 days or more Total Past Due Current Total Recorded Number Principal Number Principal Number Principal Number Principal (Dollars in thousands) Commercial and industrial 9 $ 399 4 $ 1,021 8 $ 3,039 21 $ 4,459 $ 838,817 $ 843,276 $ — Commercial real estate 19 7,349 6 1,627 13 4,458 38 13,434 2,640,000 2,653,434 — Commercial construction — — — — 1 304 1 304 373,064 373,368 — Small business 11 93 4 9 13 69 28 171 96,075 96,246 — Residential real estate 20 3,119 11 2,049 19 3,433 50 8,601 630,005 638,606 — Home equity 21 1,526 11 903 20 1,338 52 3,767 924,036 927,803 — Other consumer 297 231 12 65 13 25 322 321 14,667 14,988 — Total 377 $ 12,717 48 $ 5,674 87 $ 12,666 512 $ 31,057 $ 5,516,664 $ 5,547,721 $ — December 31, 2014 30-59 days 60-89 days 90 days or more Total Past Due Current Total Recorded Number Principal Number Principal Number Principal Number Principal (Dollars in thousands) Commercial and industrial 18 $ 3,192 10 $ 1,007 19 $ 2,320 47 $ 6,519 $ 854,320 $ 860,839 $ — Commercial real estate 19 13,428 6 1,480 16 4,225 41 19,133 2,328,190 2,347,323 — Commercial construction 1 506 — — 1 311 2 817 265,177 265,994 — Small business 7 21 8 113 7 173 22 307 84,940 85,247 — Residential real estate 13 1,670 10 1,798 36 4,826 59 8,294 521,965 530,259 106 Home equity 20 1,559 7 307 23 2,402 50 4,268 859,595 863,863 — Other consumer 318 382 16 23 15 15 349 420 16,788 17,208 13 Total 396 $ 20,758 57 $ 4,728 117 $ 14,272 570 $ 39,758 $ 4,930,975 $ 4,970,733 $ 119
Schedule of Troubled Debt Restructuring and Other Pertinent Information	December 31 2015 2014 (Dollars in thousands) TDRs on accrual status $ 32,849 $ 38,382 TDRs on nonaccrual status 5,225 5,248 Total TDRs $ 38,074 $ 43,630 Amount of specific reserves included in the allowance for loan loss associated with TDRs: $ 1,628 $ 2,004 Additional commitments to lend to a borrower who has been a party to a TDR: $ 972 $ 1,400
Schedule of Troubled Debt Restructuring Modifications	Years Ended December 31 2015 Number Pre-Modification Post-Modification (Dollars in thousands) Troubled debt restructurings Commercial and industrial 13 $ 1,314 $ 1,314 Commercial real estate 6 2,941 2,941 Small business 9 293 293 Residential real estate 8 843 870 Home equity 8 694 694 Total 44 $ 6,085 $ 6,112 2014 Troubled debt restructurings Commercial and industrial 12 $ 681 $ 681 Commercial real estate 13 4,329 4,329 Small business 5 133 133 Residential real estate 9 1,535 1,568 Home equity 11 923 926 Other consumer 1 8 8 Total 51 $ 7,609 $ 7,645 2013 Troubled debt restructurings Commercial and industrial 11 $ 732 $ 732 Commercial real estate 9 8,100 8,100 Small business 12 556 556 Residential real estate 9 2,401 2,427 Home equity 17 1,347 1,347 Other consumer 9 27 27 Total 67 $ 13,163 $ 13,189 (1) The post-modification balances represent the legal principal balance of the loan on the date of modification. These amounts may show an increase when modifications include a capitalization of interest.
Schedule of Post-Modification Balance of Troubled Debt Restructuring by Type of Modification	The following table shows the Company’s post-modification balance of TDRs listed by type of modification as of the periods indicated: Years Ended December 31 2015 2014 2013 (Dollars in thousands) Extended maturity $ 2,936 $ 3,441 $ 3,582 Adjusted interest rate — 727 — Combination rate and maturity 2,199 2,640 8,917 Court ordered concession 977 837 690 Total $ 6,112 $ 7,645 $ 13,189
Schedule of Troubled Debt Restructurings Which Have Subsequently Defaulted	Years Ended December 31 2015 2014 2013 Number Recorded Number Recorded Number Recorded (Dollars in thousands) Troubled debt restructurings that subsequently defaulted Commercial & industrial 3 $ 339 2 $ 196 — $ — Commercial real estate 1 502 — — 1 176 Residential real estate 2 326 3 214 — — Home equity 1 100 — — — — Other consumer — — — — 1 1 Total 7 $ 1,267 5 $ 410 2 $ 177
Schedule of Impaired Loans by Loan Portfolio	The table below sets forth information regarding the Company’s impaired loans as of the dates indicated: As of and For the Years Ended December 31 2015 Recorded Unpaid Related Average Interest Income Recognized (Dollars in thousands) With no related allowance recorded Commercial and industrial $ 2,613 $ 3,002 $ — $ 3,024 $ 71 Commercial real estate 12,008 13,128 — 11,676 375 Commercial construction 304 305 — 308 — Small business 527 618 — 584 22 Residential real estate 3,874 4,033 — 3,958 157 Home equity 4,893 5,005 — 5,023 195 Other consumer 184 185 — 201 15 Subtotal 24,403 26,276 — 24,774 835 With an allowance recorded Commercial and industrial 2,534 2,648 183 2,848 48 Commercial real estate 10,978 11,047 204 10,789 592 Small business 494 523 4 535 30 Residential real estate 11,531 12,652 1,278 11,669 460 Home equity 1,096 1,287 238 655 14 Other consumer 374 389 23 408 14 Subtotal 27,007 28,546 1,930 26,904 1,158 Total $ 51,410 $ 54,822 $ 1,930 $ 51,678 $ 1,993 2014 Recorded Unpaid Related Average Interest (Dollars in thousands) With no related allowance recorded Commercial and industrial $ 3,005 $ 3,278 $ — $ 4,557 $ 258 Commercial real estate 15,982 17,164 — 16,703 1,025 Commercial construction 311 311 — 311 13 Small business 692 718 — 772 45 Residential real estate 2,439 2,502 — 2,493 102 Home equity 4,169 4,221 — 4,264 198 Other consumer 338 341 — 364 24 Subtotal 26,936 28,535 — 29,464 1,665 With an allowance recorded Commercial and industrial 1,649 1,859 412 2,032 98 Commercial real estate 14,747 15,514 197 15,650 842 Small business 396 458 7 456 32 Residential real estate 12,616 13,727 1,500 12,817 537 Home equity 1,161 1,264 262 1,203 46 Other consumer 530 530 38 580 22 Subtotal 31,099 33,352 2,416 32,738 1,577 Total $ 58,035 $ 61,887 $ 2,416 $ 62,202 $ 3,242 2013 Recorded Unpaid Related Average Interest (Dollars in thousands) With no related allowance recorded Commercial and industrial $ 7,147 $ 7,288 $ — $ 7,338 $ 338 Commercial real estate 14,283 15,891 — 15,728 1,075 Commercial construction 100 408 — 1,105 43 Small business 1,474 1,805 — 1,854 121 Residential real estate 1,972 2,026 — 2,021 95 Home equity 4,263 4,322 — 4,335 202 Other consumer 446 446 — 515 41 Subtotal 29,685 32,186 — 32,896 1,915 With an allowance recorded Commercial and industrial 2,001 2,045 1,150 2,572 125 Commercial real estate 25,233 25,377 765 25,595 1,326 Small business 429 462 109 459 28 Residential real estate 13,228 14,197 1,564 13,405 515 Home equity 627 694 116 642 26 Other consumer 852 856 70 954 33 Subtotal 42,370 43,631 3,774 43,627 2,053 Total $ 72,055 $ 75,817 $ 3,774 $ 76,523 $ 3,968
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities Acquired During Period [Table Text Block]	December 31 2015 2014 (Dollars in thousands) Outstanding balance $ 23,199 $ 25,279 Carrying amount $ 20,595 $ 22,315
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Accretable Yield Movement Schedule [Table Text Block]	The following table summarizes activity in the accretable yield for the PCI loan portfolio: 2015 2014 (Dollars in thousands) Beginning balance $ 2,974 $ 2,514 Acquisition 319 — Accretion (2,485 ) (2,299 ) Other change in expected cash flows (1) 1,721 2,565 Reclassification from nonaccretable difference for loans which have paid off (2) 298 194 Ending balance $ 2,827 $ 2,974 (1) Represents changes in cash flows expected to be collected and resulting in increased interest income as a prospective yield adjustment over the remaining life of the loan(s). (2) Results in increased income during the period when a loan pays off at amount greater than originally expected.

BANK PREMISES AND EQUIPMENT (Ta

BANK PREMISES AND EQUIPMENT (Tables)	12 Months Ended
	Dec. 31, 2015
Property, Plant and Equipment [Abstract]
Schedule of Premises and Equipment	BANK PREMISES AND EQUIPMENT Bank premises and equipment at December 31, were as follows: 2015 2014 Estimated (Dollars in thousands) (In years) Cost Land $ 20,780 $ 15,786 n/a Bank premises 39,182 33,425 5-39 Leasehold improvements 22,817 20,797 1-27 Furniture and equipment 55,336 49,894 2-12 Total cost 138,115 119,902 Accumulated depreciation (62,452 ) (55,828 ) Net bank premises and equipment $ 75,663 $ 64,074

GOODWILL AND IDENTIFIABLE INT37

GOODWILL AND IDENTIFIABLE INTANGIBLE ASSETS (Tables)	12 Months Ended
	Dec. 31, 2015
Goodwill and Intangible Assets Disclosure [Abstract]
Schedule of Intangible Assets and Goodwill	The following table sets forth the carrying value of goodwill and other intangible assets, net of accumulated amortization, at December 31: 2015 2014 (Dollars in thousands) Balances not subject to amortization Goodwill $ 201,083 $ 170,421 Balances subject to amortization Core deposit intangibles 10,264 9,269 Other intangible assets 1,562 616 Total other intangible assets 11,826 9,885 Total goodwill and other intangible assets $ 212,909 $ 180,306
Schedule of Goodwill	The changes in the carrying value of goodwill for the periods indicated were as follows: 2015 2014 (Dollars in thousands) Balance at beginning of year $ 170,421 $ 170,421 Acquisitions 30,662 — Balance at end of year $ 201,083 $ 170,421
Schedule of Other Intangible Assets	The gross carrying amount and accumulated amortization of other intangible assets were as follows at the periods indicated: 2015 2014 Gross Accumulated Net Gross Accumulated Net (Dollars in thousands) Core deposit intangibles $ 23,367 $ (13,103 ) $ 10,264 $ 20,147 $ (10,878 ) $ 9,269 Other intangible assets 3,051 (1,489 ) 1,562 1,940 (1,324 ) 616 Total $ 26,418 $ (14,592 ) $ 11,826 $ 22,087 $ (12,202 ) $ 9,885
Schedule of Intangible Assets Estimated Annual Amortization Expense	The following table sets forth the estimated annual amortization expense of intangible assets for each of the next five years: Year Amount (Dollars in thousands) 2016 $ 2,767 2017 $ 2,747 2018 $ 1,781 2019 $ 1,135 2020 $ 948

DEPOSITS (Tables)

DEPOSITS (Tables)	12 Months Ended
	Dec. 31, 2015
Banking and Thrift [Abstract]
Schedule of Time Deposits Maturities	The following is a summary of the scheduled maturities of time deposits as of December 31: 2015 2014 (Dollars in thousands) 1 year or less $ 488,046 71.2 % $ 462,506 71.2 % Over 1 year to 2 years 83,244 12.2 % 102,385 15.8 % Over 2 years to 3 years 31,017 4.5 % 29,044 4.5 % Over 3 years to 4 years 35,448 5.2 % 26,156 4.0 % Over 4 years to 5 years 47,075 6.9 % 29,529 4.5 % Total $ 684,830 100.0 % $ 649,620 100.0 %

BORROWINGS (Tables)

BORROWINGS (Tables)	12 Months Ended
	Dec. 31, 2015
Debt Disclosure [Abstract]
Schedule of Federal Home Loan Bank Borrowings	Advances payable to the Federal Home Loan Bank are summarized as follows: 2015 2014 Weighted Weighted Average Average Total Contractual Total Contractual Outstanding Rate Outstanding Rate (Dollars in thousands) Stated Maturity 2015 $ — — % $ 38,001 0.69 % 2016 52,025 2.26 % — — % 2017 40,154 3.10 % 31,203 4.03 % 2018 7,043 1.75 % — — % 2019 2,011 1.99 % — — % Subtotal 101,233 2.53 % 69,204 2.20 % Amortizing advances 847 876 Total Federal Home Loan Bank Advances $ 102,080 $ 70,080
Schedule of Underlying Assets of Repurchase Agreements when Amount of Repurchase Agreements Exceeds 10 Percent of Assets [Table Text Block]	The table below sets forth information regarding the Company’s repurchase agreements allocated by source of collateral at the date indicated: December 31, 2015 Remaining Contractual Maturity of the Agreements Overnight and Continuous Up to 30 Days 30-90 Days Greater than 90 Days Total (Dollars in thousands) Sources of Collateral U.S. government agency securities $ 10,157 $ — $ — $ — $ 10,157 Agency mortgage-backed securities 69,142 — — — 69,142 Agency collateralized mortgage obligations 54,659 — — — 54,659 Total borrowings $ 133,958 $ — $ — $ — $ 133,958
Schedule of Long-term Borrowings	The following table summarizes long-term debt as of the periods indicated: December 31 2015 2014 (Dollars in thousands) Wholesale repurchase agreements $ — $ 50,000 Junior subordinated debentures Capital Trust V 51,547 51,547 Slades Ferry Trust I 10,310 10,310 Central Trust I 5,258 5,258 Central Trust II 6,349 6,570 Subordinated debentures 35,000 65,000 Total long-term debt $ 108,464 $ 188,685
Information relating to Trust Preferred Securities [Table Text Block]	Information relating to these trust preferred securities are as follows: Trust Description of Capital Securities Capital Trust V $50.0 million due in 2037, interest at a variable rate (LIBOR plus 1.48%), which has been effectively converted to a fixed rate of 6.52% until December 28, 2016, through the use of an interest rate swap. These securities are callable quarterly, until maturity. Slades Ferry Trust I $10.0 million due in 2034, bearing interest at a variable rate (LIBOR plus 2.79%). These securities are callable quarterly, until maturity. Central Trust I $5.1 million due in 2034, bearing interest at a variable rate (LIBOR plus 2.44%). These securities are callable quarterly, until maturity. Central Trust II $5.9 million due in 2037, bearing a fixed interest rate of 7.015% until March 15, 2017. Subsequent to this date, the interest will be variable (LIBOR plus 1.65%) and the securities will become callable quarterly, until maturity.
Schedule of Maturities of Borrowings	The following table sets forth the contractual maturities of long-term debt over the next five years: 2016 2017 2018 2019 2020 Thereafter Total (Dollars in thousands) Junior subordinated debentures Capital trust V $ — $ — $ — $ — $ — $ 51,547 $ 51,547 Slades ferry trust I $ — $ — $ — $ — $ — $ 10,310 $ 10,310 Central trust I $ — $ — $ — $ — $ — $ 5,258 $ 5,258 Central trust II $ — $ — $ — $ — $ — $ 6,349 $ 6,349 Subordinated debentures $ — $ — $ — $ — $ — $ 35,000 $ 35,000

EARNINGS PER SHARE (Tables)

EARNINGS PER SHARE (Tables)	12 Months Ended
	Dec. 31, 2015
Earnings Per Share [Abstract]
Schedule of the Components of Earnings Per Share	Earnings per share consisted of the following components for the years ended December 31: 2015 2014 2013 (Dollars in thousands, except share and per share data) Net income $ 64,960 $ 59,845 $ 50,254 Weighted Average Shares Basic shares 25,891,382 23,899,562 23,011,814 Effect of dilutive securities 68,566 93,815 76,764 Diluted shares 25,959,948 23,993,377 23,088,578 Net income per share Basic EPS $ 2.51 $ 2.50 $ 2.18 Effect of dilutive securities (0.01 ) (0.01 ) — Diluted EPS $ 2.50 $ 2.49 $ 2.18
Schedule of Options to Purchase Common Stock Excluded From Diluted Earnings Per Share	The following table illustrates the options to purchase common stock and the shares of performance-based restricted stock that were excluded from the calculation of diluted earnings per share because they were anti-dilutive: December 31 2015 2014 2013 Stock options — — 124,608 Performance-based restricted stock — — —

STOCK BASED COMPENSATION (Table

STOCK BASED COMPENSATION (Tables)	12 Months Ended
	Dec. 31, 2015
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Schedule of Cumulatively Granted Stock Options and Restricted Stock Awards, Net of Forfeitures	The following table presents the amount of cumulatively granted stock options and restricted stock awards, net of forfeitures, through December 31, 2015 : Authorized Authorized Total Cumulative Granted, Net of Total Authorized Stock Restricted 2005 Plan (1) (1) 1,650,000 537,941 593,297 1,131,238 518,762 2010 Plan (2) (2) 314,600 27,000 76,820 103,820 210,780 (1) The Company may award up to a total of 1,650,000 shares as stock options or restricted stock awards. (2) The Company may award up to a total of 314,600 shares as stock options or restricted stock awards, inclusive of 14,600 shares which were transferred from the previous 2006 Nonemployee Director Stock Plan.
Schedule of Pre-tax Compensation Expense and Related Tax Benefits	The following table presents the pre-tax expense associated with stock option and restricted stock awards and the related tax benefits recognized for the years presented: Years Ended December 31 2015 2014 2013 (Dollars in thousands) Stock based compensation expense Stock options $ — $ 36 $ 241 Restricted stock awards(1) 2,295 2,135 1,906 Directors’ fee expense Stock options — 14 27 Restricted stock awards 194 527 288 Total stock based award expense $ 2,489 $ 2,712 $ 2,462 Related tax benefits recognized in earnings $ 1,122 $ 945 $ 832 (1) Inclusive of compensation expense associated with time-vested and performance-based restricted stock awards.
Schedule of Stock Options Granted	The Company made the following awards of nonqualified options to purchase shares of common stock in 2013. There were no such awards made in 2015 or 2014 . Year Ended December 31 2013 Date of grant 11/9/2013 Plan 2010 Options granted 5,000 Vesting period (1) 13 months Expiration date 11/9/2023 Expected volatility 31.23 % Expected life (years) 5.5 Expected dividend yield 2.64 % Risk free interest rate 1.56 % Fair value per option $ 8.13 (1) Vesting periods begin on the grant date.
Schedule of Relevant Information Relating to Stock Options	The following table presents relevant information relating to the Company’s stock options for the periods indicated: Years Ended December 31 2015 2014 2013 (Dollars in thousands) Fair value of stock options vested based on grant date fair value $ 14 $ 211 $ 430 Intrinsic value of stock options exercised $ 3,362 $ 1,210 $ 1,051 Cash received from stock option exercises $ 6,105 $ 6,285 $ 2,475 Tax benefit realized on stock option exercises/repurchase $ 1,362 $ 442 $ 322 Weighted average grant date fair value of options granted (per share) $ — $ — $ 8.13
Schedule of Stock Options	A summary of stock option activity of the Company’s Stock Option Grants for the year ended December 31, 2015 is presented in the table below: Outstanding Nonvested Stock Option Weighted Weighted Aggregate Stock Weighted (Dollars in thousands, except per share data) Balance at January 1, 2015 330,751 $ 29.36 1,666 $ 8.13 Granted — — — — Exercised (205,516 ) 29.71 n/a n/a Vested n/a n/a (1,666 ) 8.13 Forfeited — — — — Expired (3,335 ) 30.16 — — Balance at December 31, 2015 121,900 (2) $ 28.76 3.11 years $ 2,216 — $ — Options outstanding and expected to vest at December 31, 2015 121,900 (2) $ 28.76 3.11 years $ 2,216 Options exercisable at December 31, 2015 121,900 (2) $ 28.76 3.11 years $ 2,216 Unrecognized compensation cost, including forfeiture estimate $ — Weighted average remaining recognition period (years) n/a (1) The aggregate intrinsic value in the preceding tables represents the total pre-tax intrinsic value, based on the average of the high price and low price at which the Company’s common stock traded on December 31, 2015 of $46.94 , which would have been received by the option holders had they all exercised their options as of that date. (2) Inclusive of 24,000 stock options outstanding and expected to vest to Directors.
Schedule of Restricted Stock Granted	The Company grants both time-vested restricted stock awards as well as performance-based restricted stock awards. During the years ended December 31, 2015 , 2014 , and 2013 the Company has made the following restricted stock award grants: Shares Granted Plan Fair Value (1) Vesting Period Time-vested 2015 2/11/2015 31,500 2005 $ 39.42 Ratably over 5 years from grant date 2/12/2015 25,910 2005 $ 40.03 Ratably over 5 years from grant date 3/19/2015 3,800 2005 $ 43.56 Ratably over 5 years from grant date 4/27/2015 625 2005 $ 41.61 At the end of 3 years from grant date 4/27/2015 1,875 2005 $ 41.61 At the end of 5 years from grant date 5/27/2015 8,800 2010 $ 45.02 At the end of 5 years from grant date (2) 7/14/2015 800 2010 $ 47.82 Once on May 27, 2020 (3) 10/13/2015 1,000 2005 $ 46.09 Ratably over 5 years from grant date 10/20/2015 2,000 2005 $ 46.47 Ratably over 5 years from grant date 2014 3/20/2014 65,950 2005 $ 39.82 Ratably over 5 years from grant date 3/31/2014 3,000 2005 $ 39.00 Ratably over 3 years from grant date 5/20/2014 10,920 2010 $ 35.08 At the end of 5 years from grant date (2) 11/20/2014 2,000 2005 $ 39.11 Ratably over 5 years from grant date 12/11/2014 2,000 2005 $ 40.89 Ratably over 5 years from grant date 2013 1/16/2013 2,000 2005 $ 30.48 Ratably over 3 years from grant date 2/14/2013 93,800 2005 $ 31.51 Ratably over 5 years from grant date 5/21/2013 14,700 2010 $ 33.17 At the end of 5 years from grant date (2) Performance-based 2015 2/12/2015 21,780 2005 $ 40.03 On February 12, 2018, if performance conditions are met 2014 3/20/2014 20,700 2005 $ 39.82 On March 20, 2017, if performance conditions are met (1) The fair value of the restricted stock awards are based upon the average of the high and low prices at which the Company’s common stock traded on the date of grant. The holders of time-vested restricted stock awards participate fully in the rewards of stock ownership of the Company, including voting and dividend rights. The holders of performance-based restricted stock awards do not participate in the rewards of stock ownership of the Company until vested. The holders of all restricted stock awards are not required to pay any consideration to the Company for the awards. (2) These restricted stock grants will vest at the end of a five year period, or earlier if the director ceases to be a director for any reason other than cause, such as, for example, by retirement. If a non-employee director is removed from the Board for cause, the Company has ninety ( 90 ) days within which to exercise a right to repurchase any unvested portion of any restricted stock award from the non-employee director for the aggregate price of one dollar ( $1.00 ).
Schedule of Fair Value of Restricted Stock Awards Vesting	The following table presents the fair value of restricted stock awards vesting during the periods presented: Years Ended December 31 2015 2014 2013 (Dollars in thousands) Fair value of restricted stock awards upon vesting $ 2,610 $ 3,293 $ 3,289
Schedule of Restricted Stock Awards	A summary of the status of the Company’s Restricted Stock Award Grants for the year ended December 31, 2015 is presented in the table below: Outstanding Restricted Stock Weighted Average (Dollars in thousands, except per share data) Balance at January 1, 2015 276,527 $ 33.15 Granted 98,090 40.71 Vested/released (63,437 ) 31.47 Forfeited (46,236 ) 35.02 Balance at December 31, 2015 264,944 (1) $ 36.03 Unrecognized compensation cost (inclusive of directors’ fees), including forfeiture estimate $ 6,351 Weighted average remaining recognition period (years) 2.97 (1) Inclusive of 44,200 restricted stock awards outstanding to Directors.

DERIVATIVES AND HEDGING ACTIV42

DERIVATIVES AND HEDGING ACTIVITIES (Tables)	12 Months Ended
	Dec. 31, 2015
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Details of derivative positions for interest rate swaps which qualify as hedges for accounting purposes	The following table reflects the Company’s derivative positions for the periods indicated below for interest rate swaps which qualify as cash flow hedges for accounting purposes: December 31, 2015 Notional Trade Effective Maturity Receive Current Pay Fixed Fair Value (Dollars in thousands) $ 25,000 16-Feb-06 28-Dec-06 28-Dec-16 3 Month LIBOR 0.51 % 5.04 % $ (1,054 ) 25,000 16-Feb-06 28-Dec-06 28-Dec-16 3 Month LIBOR 0.51 % 5.04 % (1,055 ) 25,000 9-Dec-08 10-Dec-08 10-Dec-18 3 Month LIBOR 0.49 % 2.94 % (1,164 ) $ 75,000 $ (3,273 ) December 31, 2014 Notional Trade Effective Maturity Receive Current Pay Fixed Fair Value (Dollars in thousands) $ 25,000 16-Feb-06 28-Dec-06 28-Dec-16 3 Month LIBOR 0.24 % 5.04 % $ (2,093 ) 25,000 16-Feb-06 28-Dec-06 28-Dec-16 3 Month LIBOR 0.24 % 5.04 % (2,094 ) 25,000 9-Dec-08 10-Dec-08 10-Dec-18 3 Month LIBOR 0.24 % 2.94 % (1,383 ) $ 75,000 $ (5,570 )
Summary of customer related derivative positions, not designated as hedging	The following table reflects the Company’s customer related derivative positions for the periods indicated below for those derivatives not designated as hedging: Number of Notional Amount Maturing Less than 1 year Less than 2 years Less than 3 years Less than 4 years Thereafter Total Fair Value December 31, 2015 (Dollars in thousands) Loan level derivatives Receive fixed, pay variable 171 $ 37,732 $ 34,424 $ 29,629 $ 77,041 $ 488,110 $ 666,936 $ 22,467 Pay fixed, receive variable 165 $ 37,732 $ 34,424 $ 29,629 $ 77,041 $ 488,110 $ 666,936 $ (22,462 ) Foreign exchange contracts Buys foreign currency, sells U.S. currency 21 $ 38,416 $ — $ — $ — $ — $ 38,416 $ (354 ) Buys U.S. currency, sells foreign currency 21 $ 38,416 $ — $ — $ — $ — $ 38,416 $ 382 December 31, 2014 (Dollars in thousands) Loan level derivatives Receive fixed, pay variable 174 $ 88,147 $ 46,854 $ 40,958 $ 38,108 $ 403,208 $ 617,275 $ 17,840 Pay fixed, receive variable 168 $ 88,147 $ 46,854 $ 40,958 $ 38,108 403,208 $ 617,275 $ (17,837 ) Foreign exchange contracts Buys foreign currency, sells U.S. currency 23 $ 57,112 $ — $ — $ — $ — $ 57,112 $ (3,984 ) Buys U.S. currency, sells foreign currency 23 $ 57,112 $ — $ — $ — $ — $ 57,112 $ 4,007 (1) The Company may enter into one dealer swap agreement which offsets multiple commercial borrower swap agreements.
Fair value of derivative financial instruments as well as their classification on the balance sheet	The table below presents the fair value of the Company’s derivative financial instruments as well as their classification on the balance sheet at the periods indicated: Asset Derivatives Liability Derivatives Fair Value at Fair Value at Fair Value at Fair Value at Balance Sheet December 31, 2015 December 31, 2014 Balance Sheet December 31, 2015 December 31, 2014 (Dollars in thousands) Derivatives designated as hedges Interest rate derivatives Other assets $ — $ — Other liabilities $ 3,273 $ 5,570 Derivatives not designated as hedges Customer Related Positions: Loan level derivatives Other assets 22,470 18,383 Other liabilities 22,465 18,380 Foreign exchange contracts Other assets 602 4,007 Other liabilities 574 3,984 Mortgage Derivatives Interest rate lock commitments Other assets 233 295 Other liabilities — — Forward TBA mortgage contracts Other assets — — Other liabilities — 16 Forward sales agreements Other assets — 3 Other liabilities 1 — Subtotal 23,305 22,688 23,040 22,380 Total $ 23,305 $ 22,688 $ 26,313 $ 27,950
Effect of derivative financial instruments included in OCI and current earnings	The table below presents the effect of the Company’s derivative financial instruments included in OCI and current earnings for the periods indicated: Years Ended December 31 2015 2014 2013 (Dollars in thousands) Derivatives designated as hedges Gain in OCI on derivatives (effective portion), net of tax $ 1,199 $ 2,256 $ 3,735 Loss reclassified from OCI into interest expense (effective portion) $ (2,828 ) $ (3,662 ) $ (5,723 ) Loss reclassified from OCI into noninterest expense (loss on termination) $ — $ (1,122 ) $ — Loss recognized in income on derivatives (ineffective portion and amount excluded from effectiveness testing) Interest expense $ — $ — $ — Other expense — — — Total $ — $ — $ — Derivatives not designated as hedges Changes in fair value of customer related positions Other income $ 60 $ 63 $ 38 Other expenses (53 ) (4 ) (116 ) Changes in fair value of mortgage derivatives Mortgage banking income (50 ) 49 354 Total $ (43 ) $ 108 $ 276

BALANCE SHEET OFFSETTING (Table

BALANCE SHEET OFFSETTING (Tables)	12 Months Ended
	Dec. 31, 2015
Offsetting [Abstract]
Financial Instruments Derivative Assets Liabilities and resell agreements net of amount not offset [Table Text Block]	The following tables present the Company's asset and liability derivative positions and the potential effect of netting arrangements on its financial position, as of the periods indicated: Gross Amounts Not Offset in the Statement of Financial Position Gross Amounts Recognized Gross Amounts Offset in the Statement of Financial Position Net Amounts Presented in the Statement of Financial Position Financial Instruments (1) Collateral Pledged Net Amount December 31, 2015 (Dollars in thousands) Derivative Assets Loan level derivatives $ 22,470 $ — $ 22,470 $ 2 $ — $ 22,468 Customer foreign exchange contracts 602 — 602 — — 602 $ 23,072 $ — $ 23,072 $ 2 $ — $ 23,070 Derivative Liabilities Interest rate swaps $ 3,273 $ — $ 3,273 $ — $ 3,273 $ — Loan level derivatives 22,465 — 22,465 2 22,461 2 Customer foreign exchange contracts 574 — 574 — — 574 Repurchase agreements Customer repurchase agreements 133,958 — 133,958 — 133,958 — $ 160,270 $ — $ 160,270 $ 2 $ 159,692 $ 576 (1) Reflects offsetting derivative positions with the same counterparty. Gross Amounts Not Offset in the Statement of Financial Position Gross Amounts Recognized Gross Amounts Offset in the Statement of Financial Position Net Amounts Presented in the Statement of Financial Position Financial Instruments (1) Collateral Pledged Net Amount December 31, 2014 (Dollars in thousands) Derivative Assets Loan level swaps $ 18,383 $ — $ 18,383 $ 272 $ — $ 18,111 Customer foreign exchange contracts 4,007 — 4,007 — — 4,007 $ 22,390 $ — $ 22,390 $ 272 $ — $ 22,118 Derivative Liabilities Interest rate swaps $ 5,570 $ — $ 5,570 $ — $ 5,570 $ — Loan level derivatives 18,380 — 18,380 272 17,836 272 Customer foreign exchange contracts 3,984 — 3,984 — — 3,984 Repurchase agreements Customer repurchase agreements 147,890 — 147,890 — 147,890 — Wholesale repurchase agreements 50,000 — 50,000 — 50,000 — $ 225,824 $ — $ 225,824 $ 272 $ 221,296 $ 4,256 (1) Reflects offsetting derivative positions with the same counterparty.

INCOME TAXES (Tables)

INCOME TAXES (Tables)	12 Months Ended
	Dec. 31, 2015
Income Tax Disclosure [Abstract]
Schedule of Components of Income Taxes	The provision for income taxes is comprised of the following components: Years Ended December 31 2015 2014 2013 (Dollars in thousands) Current expense Federal $ 11,946 $ 14,709 $ 9,570 State 5,052 6,350 4,357 Total current expense 16,998 21,059 13,927 Deferred expense (benefit) Federal 8,466 2,877 1,598 State 1,754 (37 ) 959 Total deferred expense (benefit) 10,220 2,840 2,557 Total expense $ 27,218 $ 23,899 $ 16,484
Schedule of Income Tax Rate Reconciliation	The difference between the statutory federal income tax rate of 35% and the effective income tax rate reported for the last three years is detailed below: Years Ended December 31 2015 2014 2013 (Dollars in thousands) Computed statutory federal income tax provision $ 32,262 35.00 % $ 29,310 35.00 % $ 23,359 35.00 % State taxes, net of federal tax benefit 4,500 4.88 % 4,104 4.90 % 3,455 5.17 % Nontaxable interest, net (973 ) (1.06 )% (795 ) (0.95 )% (557 ) (0.83 )% New Markets Tax Credits (6,514 ) (7.07 )% (6,708 ) (8.01 )% (9,000 ) (13.48 )% Low Income Housing Project Investments (1,182 ) (1.28 )% (594 ) (0.71 )% (194 ) (0.29 )% Increase in cash surrender value of life insurance and tax exempt gain on benefit payments (1,292 ) (1.40 )% (1,782 ) (2.13 )% (1,209 ) (1.81 )% Merger and other related costs (non-deductible) 185 0.20 % 274 0.33 % 366 0.55 % Change in valuation allowance 41 0.04 % — — % — — % Other, net 191 0.22 % 90 0.11 % 264 0.39 % Total expense $ 27,218 29.53 % $ 23,899 28.54 % $ 16,484 24.70 %
Schedule of Net Deferred Tax Asset	The tax-effected components of the net deferred tax asset at December 31 were as follows: 2015 2014 (Dollars in thousands) Deferred tax assets Accrued expenses not deducted for tax purposes $ 14,621 $ 10,997 Allowance for loan losses 22,744 22,462 Deferred gain on sale leaseback transaction 2,158 2,579 Derivatives fair value adjustment 1,033 1,882 Employee and director equity compensation 2,466 2,380 Federal Home Loan Bank borrowings fair value adjustment 108 83 Loan basis difference fair value adjustment 3,789 2,094 Net operating loss carry-forward 41 213 New Markets Tax Credit carry-forward 459 521 Other-than-temporary impairment on securities — 4,072 Other 451 2,141 Gross deferred tax assets 47,870 49,424 Valuation allowance (41 ) — Total deferred tax assets net of valuation allowance $ 47,829 $ 49,424 Deferred tax liabilities Core deposit and other intangibles $ 3,785 $ 3,194 Deferred loan fees, net 4,872 4,164 Fixed assets 7,269 4,875 Goodwill 14,576 14,194 Net unrealized gain on securities available for sale 805 2,074 Other 2,468 2,210 Total $ 33,775 $ 30,711 Total net deferred tax asset $ 14,054 $ 18,713
Reconciliation of Unrecognized Tax Benefits	The Company accounts for uncertainties in income taxes by providing a tax reserve for certain positions. The following is a reconciliation of the beginning and ending amount of unrecognized tax benefits: (Dollars in thousands) Balance at December 31, 2013 $ 55 Reduction of tax positions for prior years (55 ) Increase for prior year tax position — Increase for current year tax positions — Balance at December 31, 2014 $ — Reduction of tax positions for prior years — Increase for prior year tax positions — Increase for current year tax positions 81 Balance at December 31, 2015 $ 81

LOW INCOME HOUSING PROJECT IN45

LOW INCOME HOUSING PROJECT INVESTMENTS Low Income Housing Project Investments (Tables)	12 Months Ended
	Dec. 31, 2015
Low Income Housing Project Investments [Abstract]
Investments in Low Income Housing Projects [Table Text Block]	as of December 31 : 2015 2014 (Dollars in thousands) Original investment value $ 42,199 $ 40,541 Current recorded investment $ 38,151 $ 38,943 Unfunded liability obligation $ 14,607 $ 28,004 Tax credits and benefits earned during the year $ 3,632 $ 1,683 Amortization of investments during the year $ 2,450 $ 1,089 Net income tax benefit recognized during the year $ 1,182 $ 594

EMPLOYEE BENEFIT PLANS (Tables)

EMPLOYEE BENEFIT PLANS (Tables)	12 Months Ended
	Dec. 31, 2015
Compensation and Retirement Disclosure [Abstract]
Schedule of Multiemployer Plan	Funding Status FIP/RP Status Surcharge Expiration Minimum EIN/Pension 2015 2014 Pentegra defined benefit plan for financial institutions 13-5645888/333 At least 80 percent At least 80 percent No No N/A $ —
Schedule of Multiemployer Plan Contributions	The Company’s contributions to the Pension Plans were as follows for the periods indicated: Plan Year Allocation Cash Payment 2015-2016 2014-2015 2013-2014 2012-2013 (Dollars in thousands) 2015 $ 2,983 $ 2,983 $ — $ — $ — 2014 $ 1,320 $ — $ 1,320 $ — $ — 2013 $ 2,603 $ — $ — $ 1,762 $ 841
Schedule of Supplemental Retirement Expense and Contributions Paid	The following table shows the defined benefit supplemental retirement expense, and the contributions paid to the plans which were used only to pay the current year benefits as of the dates indicated: 2015 2014 2013 (Dollars in thousands) Retirement expense $ 1,834 $ 954 $ 1,049 Contributions paid $ 276 $ 271 $ 253
Schedule of Expected Benefit Payments	Defined Benefit Supplemental Executive (Dollars in thousands) 2016 $ 431 2017 $ 425 2018 $ 460 2019 $ 509 2020 $ 500 2021-2025 $ 4,348
Schedule of Supplemental Executive Retirement Plans	The following table illustrates the status of the defined benefit supplemental executive retirement plans at December 31 for the years presented: Defined Benefit Supplemental Executive 2015 2014 2013 (Dollars in thousands) Change in accumulated benefit obligation Benefit obligation at beginning of year $ 12,537 $ 8,243 $ 8,714 Accumulated service cost 742 397 429 Interest cost 470 390 409 Plan amendment — 1,357 — Actuarial loss/(gain) (183 ) 2,421 (1,056 ) Benefits paid (276 ) (271 ) (253 ) Accumulated benefit obligation at end of year $ 13,290 $ 12,537 $ 8,243 Change in plan assets Fair value of plan assets at beginning of year $ — $ — $ — Employer contribution 276 271 253 Benefits paid (276 ) (271 ) (253 ) Fair value of plan assets at end of year $ — $ — $ — Funded status at end of year $ (13,290 ) $ (12,537 ) $ (8,243 ) Assets — — — Liabilities (13,290 ) (12,537 ) (8,243 ) Accrued benefit cost $ (13,290 ) $ (12,537 ) $ (8,243 ) Amounts recognized in accumulated other comprehensive income (“AOCI”) Net loss $ 2,859 $ 3,305 $ 938 Prior service cost 1,599 1,904 659 Amounts recognized in AOCI $ 4,458 $ 5,209 $ 1,597 Information for plans with an accumulated benefit obligation in excess of plan assets Projected benefit obligation $ 13,290 $ 12,537 $ 8,243 Accumulated benefit obligation $ 13,290 $ 12,537 $ 8,243 Net periodic benefit cost Service cost $ 742 $ 397 $ 429 Interest cost 470 390 409 Amortization of prior service cost 305 113 113 Recognized net actuarial loss 317 54 155 Net periodic benefit cost $ 1,834 $ 954 $ 1,106 Amounts in accumulated other comprehensive income expected to be recognized in net periodic benefit cost over next fiscal year Net actuarial loss $ 270 $ 309 $ 18 Net prior service cost $ 276 $ 947 $ 113 Discount rate used for benefit obligation 2.49-4.16% 2.24-3.84% 4.95 % Discount rate used for net periodic benefit cost 2.24-3.84% 2.43-4.76% 4.05 % Rate of compensation increase n/a n/a n/a

FAIR VALUE MEASUREMENTS (Tables

FAIR VALUE MEASUREMENTS (Tables)	12 Months Ended
	Dec. 31, 2015
Fair Value Disclosures [Abstract]
Schedule of Assets and Liabilities Measured at Fair Value on a Recurring and Nonrecurring Basis	Assets and liabilities measured at fair value on a recurring and nonrecurring basis were as follows as of the dates indicated: Fair Value Measurements at Reporting Date Using Balance Quoted Prices in Significant Other Significant December 31, 2015 (Dollars in thousands) Recurring fair value measurements Assets Trading securities $ 356 $ 356 $ — $ — Securities available for sale U.S. Government agency securities 30,215 — 30,215 — Agency mortgage-backed securities 210,937 — 210,937 — Agency collateralized mortgage obligations 63,584 — 63,584 — State, county, and municipal securities 4,659 — 4,659 — Single issuer trust preferred securities issued by banks and insurers 2,792 — 2,792 — Pooled trust preferred securities issued by banks and insurers 1,572 — — 1,572 Small business administration pooled securities 40,449 — 40,449 — Equity securities 13,041 13,041 — — Loans held for sale 5,990 — 5,990 — Derivative instruments 23,305 — 23,305 — Liabilities Derivative instruments 26,313 — 26,313 — Total recurring fair value measurements $ 370,587 $ 13,397 $ 355,618 $ 1,572 Nonrecurring fair value measurements Assets Collateral dependent impaired loans $ 4,598 $ — $ — $ 4,598 Other real estate owned and other foreclosed assets 2,159 — — 2,159 Total nonrecurring fair value measurements $ 6,757 $ — $ — $ 6,757 December 31, 2014 (Dollars in thousands) Recurring fair value measurements Assets Securities available for sale U.S. Government agency securities $ 41,486 $ — $ 41,486 $ — Agency mortgage-backed securities 217,678 — 217,678 — Agency collateralized mortgage obligations 63,035 — 63,035 — State, county, and municipal securities 5,223 — 5,223 — Single issuer trust preferred securities issued by banks and insurers 2,909 — 2,909 — Pooled trust preferred securities issued by banks and insurers 6,321 — — 6,321 Equity securities 11,902 11,902 — — Loans held for sale 6,888 — 6,888 — Derivative instruments 22,688 — 22,688 — Liabilities Derivative instruments 27,950 — 27,950 — Total recurring fair value measurements $ 350,180 $ 11,902 $ 331,957 $ 6,321 Nonrecurring fair value measurements: Assets Collateral dependent impaired loans $ 8,196 $ — $ — $ 8,196 Other real estate owned and other foreclosed assets 7,743 — — 7,743 Total nonrecurring fair value measurements $ 15,939 $ — $ — $ 15,939
Reconciliation of Assets on Recurring Basis Using Significant Unobservable Inputs	The table below presents a reconciliation for all assets and liabilities measured at fair value on a recurring basis using significant unobservable inputs (Level 3). These instruments were valued using pricing models and discounted cash flow methodologies. The following table provides a reconciliation for all assets and liabilities measured at fair value on a recurring basis using significant unobservable inputs (Level 3) for the periods indicated: Securities Available for Sale December 31, 2015 December 31, 2014 December 31, 2013 (Dollars in thousands) Pooled Total Pooled Total Pooled Private Total Beginning balance $ 6,321 $ 6,321 $ 3,841 $ 3,841 $ 2,981 $ 3,532 $ 6,513 Gains and (losses) (realized/unrealized) Included in earnings — — — — — — — Included in other comprehensive income 14 14 2,655 2,655 1,132 (64 ) 1,068 Sales (4,679 ) (4,679 ) — — — (2,695 ) (2,695 ) Settlements (84 ) (84 ) (175 ) (175 ) (272 ) (773 ) (1,045 ) Transfers into (out of) level 3 — — — — — — — Ending balance $ 1,572 $ 1,572 $ 6,321 $ 6,321 $ 3,841 $ — $ 3,841
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Table Text Block]	The following table sets forth certain unobservable inputs regarding the Company's investment in securities that are classified as Level 3: December 31, December 31, December 31, 2015 2014 2015 2014 2015 2014 Valuation Technique Fair Value Unobservable Inputs Range Weighted Average (Dollars in Thousands) Discounted cash flow methodology Pooled trust preferred securities $ 1,572 $ 6,321 Cumulative prepayment 0% - 64% 0% - 75% 2.7% 7.0% Cumulative default 5% - 100% 3% - 100% 15.1% 13.9% Loss given default 85% - 100% 85% - 100% 94.2% 96.1% Cure given default 0% - 75% 0% - 75% 62.3% 46.7% Appraisals of collateral (1) Impaired loans $ 4,598 $ 8,196 Other real estate owned and foreclosed assets $ 2,159 $ 7,743 (1) Fair value is generally determined through independent appraisals of the underlying collateral, which generally include various Level 3 inputs which are not identifiable. Appraisals may be adjusted by management for qualitative factors such as economic factors and estimated liquidation expenses. The range of these possible adjustments may vary.
Schedule of Fair Values and Related Carrying Amounts by Balance Sheet Grouping	The estimated fair values and related carrying amounts for assets and liabilities for which fair value is only disclosed are shown below as of the periods indicated: Fair Value Measurements at Reporting Date Using Book Value Fair Value Quoted Prices in Active Markets for Identical Assets (Level 1) Significant Other Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) December 31, 2015 (Dollars in thousands) Financial assets Securities held to maturity(a) U.S. Treasury securities $ 1,009 $ 1,064 $ — $ 1,064 $ — Agency mortgage-backed securities 167,134 170,375 — 170,375 — Agency collateralized mortgage obligations 267,348 264,891 — 264,891 — State, county, and municipal securities 225 227 — 227 — Single issuer trust preferred securities issued by banks 1,500 1,522 — 1,522 — Small business administration pooled securities 35,291 35,664 — 35,664 — Corporate debt securities 5,000 5,006 — 5,006 — Loans, net of allowance for loan losses(b) 5,491,896 5,422,023 — — 5,422,023 Financial liabilities Time certificates of deposits(c) $ 684,830 $ 684,370 $ — $ 684,370 $ — Federal Home Loan Bank borrowings(c) 102,080 102,396 — 102,396 — Customer repurchase agreements and other short-term borrowings(c) 133,958 133,958 — — 133,958 Junior subordinated debentures(d) 73,464 74,029 — 74,029 — Subordinated debentures(c) 35,000 34,781 — — 34,781 December 31, 2014 Financial assets (Dollars in thousands) Securities held to maturity(a) U.S. Treasury securities $ 1,010 $ 1,073 $ — $ 1,073 $ — Agency mortgage-backed securities 159,522 164,944 — 164,944 — Agency collateralized mortgage obligations 198,220 196,584 — 196,584 — State, county, and municipal securities 424 428 — 428 — Small business administration pooled securities 9,775 10,074 — 10,074 — Single issuer trust preferred securities issued by banks 1,500 1,477 — 1,477 — Corporate debt securities 5,002 5,119 — 5,119 — Loans, net of allowance for loan losses(b) 4,907,437 4,875,283 — — 4,875,283 Financial liabilities Time certificates of deposits(c) $ 649,620 $ 651,180 $ — $ 651,180 $ — Federal Home Loan Bank borrowings(c) 70,080 70,208 — 70,208 — Customer repurchase agreements and other short-term borrowings(c) 147,890 147,890 — — 147,890 Wholesale repurchase agreements(c) 50,000 50,510 — — 50,510 Junior subordinated debentures(d) 73,685 70,045 — 70,045 — Subordinated debentures(c) 65,000 64,198 — — 64,198 (a) The fair values presented are based on quoted market prices, where available. If quoted market prices are not available, fair values are based on quoted market prices of comparable instruments and/or discounted cash flow analysis. (b) Fair value is estimated by discounting the future cash flows using the current rates at which similar loans would be made to borrowers with similar credit ratings and for the same remaining maturities or cash flows. (c) Fair value was determined by discounting anticipated future cash payments using rates currently available for instruments with similar remaining maturities. (d) Fair value was determined based upon market prices of securities with similar terms and maturities.

OTHER COMPREHENSIVE LOSS (Table

OTHER COMPREHENSIVE LOSS (Tables)	12 Months Ended
	Dec. 31, 2015
Equity [Abstract]
Schedule of Other Comprehensive Loss	The following table presents a reconciliation of the changes in the components of other comprehensive income (loss) for the dates indicated, including the amount of income tax (expense) benefit allocated to each component of other comprehensive income (loss): Year Ended December 31, 2015 Pre Tax Tax (Expense) After Tax (Dollars in thousands) Change in fair value of securities available for sale $ (3,757 ) $ 1,434 $ (2,323 ) Less: net security losses reclassified into other noninterest income (405 ) 165 (240 ) Net change in fair value of securities available for sale (3,352 ) 1,269 (2,083 ) Change in fair value of cash flow hedges (776 ) 299 (477 ) Less: net cash flow hedge losses reclassified into interest on borrowings expense (1) (2,828 ) 1,152 (1,676 ) Net change in fair value of cash flow hedges 2,052 (853 ) 1,199 Net unamortized gain related to defined benefit pension and other postretirement adjustments arising during the period 438 (193 ) 245 Less: amortization of net actuarial losses (243 ) 99 (144 ) Less: amortization of net prior service credits (294 ) 119 (175 ) Net change in other comprehensive income for defined benefit postretirement plans (2) 975 (411 ) 564 Total other comprehensive loss $ (325 ) $ 5 $ (320 ) Year Ended December 31, 2014 Pre Tax Tax (Expense) After Tax (Dollars in thousands) Change in fair value of securities available for sale $ 9,095 $ (3,570 ) $ 5,525 Less: net security gains reclassified into other noninterest income 191 (78 ) 113 Net change in fair value of securities available for sale 8,904 (3,492 ) 5,412 Change in fair value of cash flow hedges (969 ) 396 (573 ) Less: net cash flow hedge losses reclassified into interest on borrowings expense (1) (3,662 ) 1,496 (2,166 ) Less: loss on termination of hedge reclassified into noninterest expense (1,122 ) 459 (663 ) Net change in fair value of cash flow hedges 3,815 (1,559 ) 2,256 Net unamortized loss related to defined benefit pension and other postretirement adjustments arising during the period (2,699 ) 1,103 (1,596 ) Net prior service costs related to plan amendment arising during the period 1,357 (554 ) 803 Less: amortization of net actuarial gains 44 (18 ) 26 Less: amortization of net prior service credits (102 ) 42 (60 ) Less: amortization of net transition obligation 2 (1 ) 1 Net change in other comprehensive income for defined benefit postretirement plans (2) (4,000 ) 1,634 (2,366 ) Total other comprehensive income $ 8,719 $ (3,417 ) $ 5,302 Year Ended December 31, 2013 Pre Tax Tax (Expense) After Tax (Dollars in thousands) Change in fair value of securities available for sale $ (11,943 ) $ 4,578 $ (7,365 ) Less: net security gains reclassified into other noninterest income 230 (94 ) 136 Net change in fair value of securities available for sale (12,173 ) 4,672 (7,501 ) Change in fair value of cash flow hedges 592 (242 ) 350 Less: net cash flow hedge losses reclassified into interest on borrowings expense (1) (5,723 ) 2,338 (3,385 ) Net change in fair value of cash flow hedges 6,315 (2,580 ) 3,735 Net unamortized gain related to defined benefit pension and other postretirement adjustments arising during the period 1,302 (532 ) 770 Less: amortization of net actuarial losses (42 ) 17 (25 ) Less: amortization of net prior service credits (102 ) 42 (60 ) Less: amortization of net transition asset (4 ) 1 (3 ) Net change in other comprehensive income for defined benefit postretirement plans (2) 1,450 (592 ) 858 Total other comprehensive loss $ (4,408 ) $ 1,500 $ (2,908 ) (1) Includes the amortization of the remaining balance of a realized but unrecognized gain, net of tax, from the termination of interest rate swaps in June 2009. The original gain of $1.4 million , net of tax, will be recognized in earnings through December 2018 , the original maturity date of the swap. The balance of this gain had amortized to $427,000 , $571,000 , and $715,000 at December 31, 2015 , 2014 , and 2013 , respectively.
Schedule of Accumulated Other Comprehensive Income (Loss), Net of Tax	Information on the Company's accumulated other comprehensive loss, net of tax, is comprised of the following components as of the periods indicated: Unrealized Gain on Securities Unrealized Loss on Cash Flow Hedge Deferred Gain on Hedge Transactions Defined Benefit Postretirement Plans Accumulated Other Comprehensive Loss (Dollars in Thousands) Beginning balance: January 1, 2013 $ 5,478 $ (9,577 ) $ 859 $ (1,286 ) $ (4,526 ) Net change in other comprehensive income (loss) (7,501 ) 3,879 (144 ) 858 (2,908 ) Ending balance: December 31, 2013 $ (2,023 ) $ (5,698 ) $ 715 $ (428 ) $ (7,434 ) Net change in other comprehensive income (loss) 5,412 2,400 (144 ) (2,366 ) 5,302 Ending balance: December 31, 2014 $ 3,389 $ (3,298 ) $ 571 $ (2,794 ) $ (2,132 ) Net change in other comprehensive income (loss) (2,083 ) 1,343 (144 ) 564 (320 ) Ending balance: December 31, 2015 $ 1,306 $ (1,955 ) $ 427 $ (2,230 ) $ (2,452 )

COMMITMENTS AND CONTINGENCIES (

COMMITMENTS AND CONTINGENCIES (Tables)	12 Months Ended
	Dec. 31, 2015
Commitments and Contingencies Disclosure [Abstract]
Schedule of Off-Balance Sheet Financial Instruments	2015 2014 (Dollars In thousands) Commitments to extend credit $ 2,091,170 $ 1,822,369 Standby letters of credit $ 17,962 $ 18,516 Deferred standby letter of credit fees $ 72 $ 105
Schedule of Minimum Future Lease Commitments	The Company leases office space, space for ATM locations, and certain branch locations under noncancelable operating leases. The following is a schedule of minimum future lease payments under such leases as of December 31, 2015 : (Dollars In thousands) 2016 $ 8,943 2017 8,681 2018 7,334 2019 6,670 2020 5,695 Thereafter 10,220 Total future minimum lease commitments $ 47,543

REGULATORY CAPITAL REQUIREMEN50

REGULATORY CAPITAL REQUIREMENTS (Tables)	12 Months Ended
	Dec. 31, 2015
Banking and Thrift [Abstract]
Schedule of Compliance with Regulatory Capital Requirements under Banking Regulations	The Company’s and the Bank’s actual capital amounts and ratios as of December 31, 2015 and 2014 are also presented in the table that follows: Actual For Capital To Be Well Capitalized Amount Ratio Amount Ratio Amount Ratio December 31, 2015 (Dollars in thousands) Independent Bank Corp. Total capital (to risk weighted assets) $ 747,372 13.36 % $ 447,664 ≥ 8.0 % N/A N/A Common equity tier 1 capital (to risk weighted assets) $ 584,378 10.44 % $ 251,811 ≥ 4.5 % N/A N/A Tier 1 capital (to risk weighted assets) $ 655,154 11.71 % $ 335,748 ≥ 6.0 % N/A N/A Tier 1 capital (to average assets) $ 655,154 9.33 % $ 280,889 ≥ 4.0 % N/A N/A Rockland Trust Company Total capital (to risk weighted assets) $ 718,197 12.84 % $ 447,334 ≥ 8.0 % $ 559,167 ≥ 10.0 % Common equity tier 1 capital (to risk weighted assets) $ 660,979 11.82 % $ 251,625 ≥ 4.5 % $ 363,459 ≥ 6.5 % Tier 1 capital (to risk weighted assets) $ 660,979 11.82 % $ 335,500 ≥ 6.0 % $ 447,334 ≥ 8.0 % Tier 1 capital (to average assets) $ 660,979 9.42 % $ 280,653 ≥ 4.0 % $ 350,816 ≥ 5.0 % December 31, 2014 (Dollars in thousands) Independent Bank Corp. Total capital (to risk weighted assets) $ 666,898 13.15 % $ 405,650 ≥ 8.0 % N/A N/A Tier 1 capital (to risk weighted assets) $ 551,836 10.88 % $ 202,825 ≥ 4.0 % N/A N/A Tier 1 capital (to average assets) $ 551,836 8.84 % $ 249,825 ≥ 4.0 % N/A N/A Rockland Trust Company Total capital (to risk weighted assets) $ 607,100 11.98 % $ 405,465 ≥ 8.0 % $ 506,831 ≥ 10.0 % Tier 1 capital (to risk weighted assets) $ 527,038 10.40 % $ 202,732 ≥ 4.0 % $ 304,099 ≥ 6.0 % Tier 1 capital (to average assets) $ 527,038 8.44 % $ 249,788 ≥ 4.0 % $ 312,235 ≥ 5.0 %

PARENT COMPANY FINANCIALS ONLY

PARENT COMPANY FINANCIALS ONLY (Tables)	12 Months Ended
	Dec. 31, 2015
Condensed Financial Information of Parent Company Only Disclosure [Abstract]
Schedule of Condensed Balance Sheets	BALANCE SHEETS December 31 2015 2014 (Dollars in thousands) Assets Cash (1) $ 35,428 $ 64,791 Investments in subsidiaries(2) 851,743 691,406 Prepaid income taxes 530 285 Deferred tax asset 2,229 2,620 Deferred stock issuance costs 569 467 Total assets $ 890,499 $ 759,569 Liabilities and stockholders’ equity Dividends payable $ 6,824 $ 5,761 Junior subordinated debentures 73,464 73,685 Subordinated debentures 35,000 35,000 Derivative instruments(1) 2,109 4,187 Other liabilities 1,639 409 Total liabilities 119,036 119,042 Stockholders’ equity 771,463 640,527 Total liabilities and stockholders’ equity $ 890,499 $ 759,569 (1) Entire balance eliminates in consolidation. (2) $849.5 million and $689.2 million eliminate in consolidation at December 31, 2015 and 2014 , respectively.
Schedule of Condensed Statements of Income	STATEMENTS OF INCOME Years Ended December 31 2015 2014 2013 (Dollars in thousands) Income Dividends received from subsidiaries(1) $ 38,153 $ 40,170 $ 30,694 Interest income(2) 78 57 50 Total income 38,231 40,227 30,744 Expenses Interest expense 5,769 4,225 4,122 Other expenses 29 — 15 Total expenses 5,798 4,225 4,137 Income before income taxes and equity in undistributed income of subsidiaries 32,433 36,002 26,607 Income tax benefit (2,301 ) (1,298 ) (1,342 ) Income of parent company 34,734 37,300 27,949 Equity in undistributed income of subsidiaries 30,226 22,545 22,305 Net income $ 64,960 $ 59,845 $ 50,254 (1) Income of $55,000 , $53,000 and $54,000 was not eliminated in consolidation for the years ended December 31, 2015 , 2014 , and 2013 , respectively. (2) Entire balance eliminated in consolidation.
Schedule of Condensed Statements of Cash Flows	STATEMENTS OF CASH FLOWS Years Ended December 31 2015 2014 2013 (Dollars in thousands) Cash flows from operating activities Net income $ 64,960 $ 59,845 $ 50,254 Adjustments to reconcile net income to cash provided by operating activities Accretion (150 ) (486 ) (155 ) Deferred income tax expense 3,266 293 203 Change in other assets 7,314 — (373 ) Change in other liabilities (80 ) 25 206 Equity in undistributed income of subsidiaries (30,226 ) (22,545 ) (22,305 ) Net cash provided by operating activities 45,084 37,132 27,830 Cash flows used in investing activities Cash paid for acquisitions, net of cash acquired (51,680 ) — (10,832 ) Net cash used in investing activities (51,680 ) — (10,832 ) Cash flows used in financing activities Proceeds from short-term borrowings — — 10,000 Repayment of short-term borrowings — (5,000 ) (17,000 ) Proceeds from issuance of subordinated debentures — 35,000 — Restricted stock awards issued, net of awards surrendered (657 ) (641 ) — Net proceeds from exercise of stock options 1,367 2,333 2,475 Proceeds from shares issued under the direct stock purchase plan 2,695 1,555 969 Common dividends paid (26,172 ) (22,443 ) (15,122 ) Net cash provided by (used in) financing activities (22,767 ) 10,804 (18,678 ) Net increase (decrease) in cash and cash equivalents (29,363 ) 47,936 (1,680 ) Cash and cash equivalents at the beginning of the year 64,791 16,855 18,535 Cash and cash equivalents at the end of the year $ 35,428 $ 64,791 $ 16,855

SELECTED QUARTERLY FINANCIAL 52

SELECTED QUARTERLY FINANCIAL DATA (UNAUDITED) (Tables)	12 Months Ended
	Dec. 31, 2015
Quarterly Financial Information Disclosure [Abstract]
Schedule of Quarterly Financial Information	First Quarter Second Quarter Third Quarter Fourth Quarter 2015 2014 2015 2014 2015 2014 2015 2014 (Dollars in thousands, except per share data) Interest income $ 56,429 $ 52,980 $ 59,016 $ 54,285 $ 60,228 $ 54,368 $ 59,870 $ 54,827 Interest expense 5,180 5,374 5,269 5,232 5,183 4,805 4,985 5,007 Net interest income 51,249 47,606 53,747 49,053 55,045 49,563 54,885 49,820 Provision (benefit) for loan losses (500 ) 4,502 700 2,250 800 1,901 500 1,750 Total noninterest income 16,557 17,516 20,261 16,857 19,247 17,098 19,824 18,473 Total noninterest expenses 54,977 41,887 48,644 42,980 47,031 42,607 46,486 44,364 Provision for income taxes 3,869 5,350 7,213 5,934 7,867 6,415 8,268 6,201 Net income $ 9,460 $ 13,383 $ 17,451 $ 14,746 $ 18,594 $ 15,738 $ 19,455 $ 15,978 Basic earnings per share $ 0.38 $ 0.56 $ 0.67 $ 0.62 $ 0.71 $ 0.66 $ 0.74 $ 0.67 Diluted earnings per share $ 0.38 $ 0.56 $ 0.67 $ 0.61 $ 0.71 $ 0.66 $ 0.74 $ 0.66 Weighted average common shares (basic) 24,959,865 23,819,065 26,149,593 23,897,413 26,200,621 23,911,678 26,238,004 23,968,320 Common stock equivalents 80,215 100,173 71,819 94,560 63,493 90,685 52,772 86,812 Weighted average common shares (diluted) 25,040,080 23,919,238 26,221,412 23,991,973 26,264,114 24,002,363 26,290,776 24,055,132 Unusual or infrequently occurring items Items within noninterest income Gain on life insurance benefits $ — $ 1,627 $ — $ 337 $ — $ — $ — $ — Gain on sale of fixed income securities — — 798 — — — — 121 Total $ — $ 1,627 $ 798 $ 337 $ — $ — $ — $ 121 Items within noninterest expense Impairment on acquired facilities $ — $ 503 $ 109 $ — $ — $ 21 $ — $ — Loss on extinguishment of debt 122 — — — — — — — Loss on sale of fixed income securities — — 1,124 — — — — 21 Loss on termination of derivatives — — — 1,122 — — — — Merger and acquisition expense 10,230 77 271 — — 677 — 586 Total $ 10,352 $ 580 $ 1,504 $ 1,122 $ — $ 698 $ — $ 607

TRANSACTIONS WITH RELATED PAR53

TRANSACTIONS WITH RELATED PARTIES Activity of Loans to Related Parties (Tables)	12 Months Ended
	Dec. 31, 2015
Related Party Transaction [Line Items]
Schedule of Related Party Transactions [Table Text Block]	The following information represents annual activity of loans to related parties for the periods indicated: 2015 2014 (Dollars in thousands) Principal balance of loans outstanding at beginning of year $ 25,994 $ 52,510 Loan advances 9,268 21,310 Loan payments/payoffs (10,609 ) (21,913 ) Reduction for former directors (1) — (25,913 ) Principal balance of loans outstanding at end of year $ 24,653 $ 25,994 (1) Amounts relate to loans to individuals who are no longer current directors of the Company and therefore are not deemed to be an insider.

SUMMARY OF SIGNIFICANT ACCOUN54

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details)	12 Months Ended
	Dec. 31, 2015
Core deposit intangibles [Member] | Minimum [Member]
Finite-Lived Intangible Assets [Line Items]
Useful life	9 years
Core deposit intangibles [Member] | Maximum [Member]
Finite-Lived Intangible Assets [Line Items]
Useful life	10 years
Customer Lists [Member]
Finite-Lived Intangible Assets [Line Items]
Useful life	10 years
Noncompete Agreements [Member]
Finite-Lived Intangible Assets [Line Items]
Useful life	3 years
Leases [Member] | Minimum [Member]
Finite-Lived Intangible Assets [Line Items]
Useful life	7 years 5 months
Leases [Member] | Maximum [Member]
Finite-Lived Intangible Assets [Line Items]
Useful life	29 years

SUMMARY OF SIGNIFICANT ACCOUN55

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details Textual)	12 Months Ended
	Dec. 31, 2015USD ($)centerbranch	Dec. 31, 2014USD ($)
Accounting Policies [Line Items]
Reserve for unfunded loan commitments | $	$ 1,400,000	$ 813,000
Maximum [Member]
Accounting Policies [Line Items]
Lease option period	15 years
Loans Receivable [Member] | Lender Concentration Risk [Member] | Residential Building [Member]
Accounting Policies [Line Items]
Loans of nonresidential buildings to total loan portfolio	15.00%	16.40%
Full Service Retail Branch [Member] | Bank [Member]
Accounting Policies [Line Items]
Number of branches | branch	82
Limited Service Retail Branch [Member] | Bank [Member]
Accounting Policies [Line Items]
Number of branches | branch	3
Commercial Banking Center [Member] | Bank [Member]
Accounting Policies [Line Items]
Number of centers	11
Investment Management Office [Member] | Bank [Member]
Accounting Policies [Line Items]
Number of centers	5
Mortgage Lending Center [Member] | Bank [Member]
Accounting Policies [Line Items]
Number of centers	1

ACQUISITIONS (Details)

ACQUISITIONS (Details) - USD ($) $ in Thousands	Dec. 31, 2015	Feb. 20, 2015	Dec. 31, 2014	Dec. 31, 2013
Assets
Goodwill	$ 201,083		$ 170,421	$ 170,421
Peoples Federal Bancshares, Inc [Member]
Assets
Cash		$ 41,957
Investments		43,585
Loans		463,927
Premises and equipment		9,346
Goodwill		30,662
Core deposit intangible		3,936
Other assets		46,920
Total assets acquired		640,333
Liabilities
Deposits		432,250
Borrowings		51,209
Other liabilities		15,054
Total liabilities assumed		498,513
Purchase price		$ 141,820

ACQUISITIONS (Details 1)

ACQUISITIONS (Details 1) - USD ($) $ in Thousands	Dec. 31, 2015	Feb. 20, 2015	Dec. 31, 2014	Dec. 31, 2013
Business Acquisition [Line Items]
Interest component of expected cash flows	$ (2,827)		$ (2,974)	$ (2,514)
Peoples Federal Bancshares, Inc [Member]
Business Acquisition [Line Items]
Contractually required principal and interest payments receivable		$ 4,358
Certain Loans Acquired in Transfer, Nonaccretable Difference		(1,596)
Certain Loans Acquired in Transfer Accounted for as Debt Securities, Acquired During Period, Cash Flows Expected to be Collected at Acquisition		2,762
Interest component of expected cash flows		(319)
Less: fair value (initial carrying amount)		$ 2,443

ACQUISITIONS (Details 2)

ACQUISITIONS (Details 2) - Peoples Federal Bancshares, Inc [Member] - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014
Business Acquisition [Line Items]
Net interest income after provision for loan losses	$ 216,086	$ 203,296
Net income	$ 69,816	$ 60,896

ACQUISITIONS (Details Textual)

ACQUISITIONS (Details Textual) - USD ($) $ / shares in Units, $ in Thousands	Feb. 20, 2015	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2014	Sep. 30, 2014	Mar. 31, 2014	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Business Acquisition [Line Items]
Acquisition Related Costs		$ 0	$ 0	$ 271	$ 10,230	$ 586	$ 677	$ 77	$ 10,501	$ 1,339	$ 8,685
Peoples Federal Bancshares, Inc [Member]
Business Acquisition [Line Items]
Equity Interest Issued or Issuable Shareholders Option To Receive, Cash Per Share	$ 21
Number of shares of company stock issued for each share of Central common stock (in shares)	0.5523
Value of shares of company stock issued for each share of acquiree stock (in dollars per share)	$ 23.26
Company's closing price per share (in dollars per share)	$ 42.11
Business transaction value	$ 141,800
Cost of acquired entity, percentage cash	40.00%
Business Acquisition, Cost of Acquired Entity, Percentage Stock Consideration	60.00%
Cost of acquired entity, cash paid	$ 55,400
Consideration Transferred, Equity Interests Issued and Issuable	$ 86,400
Increase in acquirer outstanding shares	2,052,137
Acquisition Related Costs									10,500
Loans acquired	$ 463,927
Combination of INDB and Peoples Federal Bancshares, Inc [Member]
Business Acquisition [Line Items]
Acquisition Related Costs									$ 16,700

SECURITIES (Details 1)

SECURITIES (Details 1) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Available-for-sale Securities:
Amortized Cost	$ 365,140	$ 343,093
Available-for-sale Equity Securities, Accumulated Gross Unrealized Gain, before Tax	5,252	8,832
Available-for-sale Securities, Accumulated Gross Unrealized Loss, before Tax	(3,143)	(3,371)
Fair Value	367,249	348,554
Held-to-maturity Securities:
Amortized Cost	477,507	375,453
Held-to-maturity Securities, Accumulated Unrecognized Holding Gain	5,177	7,747
Held-to-maturity Securities, Accumulated Unrecognized Holding Loss	(3,935)	(3,501)
Fair Value	478,749	379,699
Available-for-sale Securities and Held-to-maturity Securities:
Amortized Cost	842,647	718,546
Gross Unrealized Gains	10,429	16,579
Gross Unrealized Losses	(7,078)	(6,872)
Fair Value	845,998	728,253
U.S. Government agency securities
Available-for-sale Securities:
Amortized Cost	29,958	41,369
Available-for-sale Debt Securities, Accumulated Gross Unrealized Gain, before Tax	261	139
Available-for-sale Debt Securities, Accumulated Gross Unrealized Loss, before Tax	(4)	(22)
Fair Value	30,215	41,486
U.S. treasury securities [Member]
Held-to-maturity Securities:
Amortized Cost	1,009	1,010
Held-to-maturity Securities, Accumulated Unrecognized Holding Gain	55	63
Held-to-maturity Securities, Accumulated Unrecognized Holding Loss	0	0
Fair Value	1,064	1,073
Agency mortgage-backed securities [Member]
Available-for-sale Securities:
Amortized Cost	207,693	211,168
Available-for-sale Debt Securities, Accumulated Gross Unrealized Gain, before Tax	4,227	7,203
Available-for-sale Debt Securities, Accumulated Gross Unrealized Loss, before Tax	(983)	(693)
Fair Value	210,937	217,678
Held-to-maturity Securities:
Amortized Cost	167,134	159,522
Held-to-maturity Securities, Accumulated Unrecognized Holding Gain	3,460	5,422
Held-to-maturity Securities, Accumulated Unrecognized Holding Loss	(219)	0
Fair Value	170,375	164,944
Agency collateralized mortgage obligations [Member]
Available-for-sale Securities:
Amortized Cost	64,157	63,059
Available-for-sale Debt Securities, Accumulated Gross Unrealized Gain, before Tax	179	599
Available-for-sale Debt Securities, Accumulated Gross Unrealized Loss, before Tax	(752)	(623)
Fair Value	63,584	63,035
Held-to-maturity Securities:
Amortized Cost	267,348	198,220
Held-to-maturity Securities, Accumulated Unrecognized Holding Gain	1,195	1,842
Held-to-maturity Securities, Accumulated Unrecognized Holding Loss	(3,652)	(3,478)
Fair Value	264,891	196,584
State, county, and municipal securities [Member]
Available-for-sale Securities:
Amortized Cost	4,543	5,106
Available-for-sale Debt Securities, Accumulated Gross Unrealized Gain, before Tax	116	117
Available-for-sale Debt Securities, Accumulated Gross Unrealized Loss, before Tax	0	0
Fair Value	4,659	5,223
Held-to-maturity Securities:
Amortized Cost	225	424
Held-to-maturity Securities, Accumulated Unrecognized Holding Gain	2	4
Held-to-maturity Securities, Accumulated Unrecognized Holding Loss	0	0
Fair Value	227	428
Single issuer trust preferred securities issued by banks [Member]
Available-for-sale Securities:
Amortized Cost	2,865	2,913
Available-for-sale Debt Securities, Accumulated Gross Unrealized Gain, before Tax	8	12
Available-for-sale Debt Securities, Accumulated Gross Unrealized Loss, before Tax	(81)	(16)
Fair Value	2,792	2,909
Held-to-maturity Securities:
Amortized Cost	1,500	1,500
Held-to-maturity Securities, Accumulated Unrecognized Holding Gain	22	0
Held-to-maturity Securities, Accumulated Unrecognized Holding Loss	0	(23)
Fair Value	1,522	1,477
Pooled trust preferred securities issued by banks and insurers
Available-for-sale Securities:
Amortized Cost	2,217	7,906
Available-for-sale Debt Securities, Accumulated Gross Unrealized Gain, before Tax	0	195
Available-for-sale Debt Securities, Accumulated Gross Unrealized Loss, before Tax	(645)	(1,780)
Fair Value	1,572	6,321
Small Business Administration Pooled Securities [Member]
Available-for-sale Securities:
Amortized Cost	40,472	0
Available-for-sale Debt Securities, Accumulated Gross Unrealized Gain, before Tax	87	0
Available-for-sale Debt Securities, Accumulated Gross Unrealized Loss, before Tax	(110)	0
Fair Value	40,449	0
Held-to-maturity Securities:
Amortized Cost	35,291	9,775
Held-to-maturity Securities, Accumulated Unrecognized Holding Gain	437	299
Held-to-maturity Securities, Accumulated Unrecognized Holding Loss	(64)	0
Fair Value	35,664	10,074
Marketable securities [Member]
Available-for-sale Securities:
Amortized Cost	13,235	11,572
Available-for-sale Debt Securities, Accumulated Gross Unrealized Gain, before Tax	374	567
Available-for-sale Debt Securities, Accumulated Gross Unrealized Loss, before Tax	(568)	(237)
Fair Value	13,041	11,902
Corporate debt securities [Member]
Held-to-maturity Securities:
Amortized Cost	5,000	5,002
Held-to-maturity Securities, Accumulated Unrecognized Holding Gain	6	117
Held-to-maturity Securities, Accumulated Unrecognized Holding Loss	0	0
Fair Value	$ 5,006	$ 5,119

SECURITIES (Details 2)

SECURITIES (Details 2) - USD ($) $ in Thousands	3 Months Ended								9 Months Ended	12 Months Ended
	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Sep. 30, 2014	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Schedule of Available-for-sale Securities [Line Items]
Gain (Loss) on Sale of Equity Investments										$ 20	$ 91	$ (28)
Available-For-Sale Securities - Equity Gross Realized Losses									$ 0	(99)	0	0
Net realized gain (loss) on equity securities										(79)	91	(28)
Available-For-Sale Securities - Fixed Income Gross Realized Gains	$ 0	$ 0	$ 798	$ 0	$ 121	$ 0	$ 0	$ 0		798	121	258
Available-for-Sale Securities - Fixed Income Gross Realized Losses	$ 0	$ 0	$ (1,124)	$ 0	$ (21)	$ 0	$ 0	$ 0		(1,124)	(21)	0
Net realized loss on fixed income securities										$ (326)	$ 100	$ 258

SECURITIES (Details 3)

SECURITIES (Details 3) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Available for Sale, Amortized Cost
Amortized Cost	$ 365,140	$ 343,093
Available for Sale, Fair Value
Securities - available for sale	367,249	348,554
Held to Maturity, Amortized Cost
Amortized Cost	477,507	375,453
Held to Maturity, Fair Value
Fair Value	478,749	$ 379,699
Debt Securities [Member]
Available for Sale, Amortized Cost
Due in one year or less	499
Due after one year to five years	34,384
Due after five to ten years	91,251
Due after ten years	225,771
Amortized Cost	351,905
Available for Sale, Fair Value
Due in one year or less	500
Due in one year or less	34,715
Due after five to ten years	91,178
Due after ten years	227,815
Securities - available for sale	354,208
Held to Maturity, Amortized Cost
Due in one year or less	5,250
Due after one year to five years	49
Due after five to ten years	34,018
Due after ten years	438,190
Amortized Cost	477,507
Held to Maturity, Fair Value
Due in one year or less	5,258
Due after one year to five years	49
Due after five to ten years	34,545
Due after ten years	438,897
Fair Value	478,749
Marketable securities [Member]
Available for Sale, Amortized Cost
Available-for-sale Equity Securities, Amortized Cost Basis	13,235
Available for Sale, Fair Value
Assets Designated to Closed Block, Equity Securities, Available-for-sale, at Fair Value	13,041
Held to Maturity, Amortized Cost
Amortized Cost	0
Held to Maturity, Fair Value
Fair Value	$ 0

SECURITIES (Details 4)

SECURITIES (Details 4) $ in Thousands	Dec. 31, 2015USD ($)holding	Dec. 31, 2014USD ($)holding
Summary of gross unrealized losses and fair value of investments
No of holdings | holding	123	80
Fair value, less than 12 months	$ 304,830	$ 64,537
Fair value, 12 months or longer	92,785	143,949
Fair value, Total	397,615	208,486
Unrealized losses, Total	(7,078)	(6,448)
Unrealized loss position for available for sale and held to maturity securities in a continuous loss position for less than 12 months	(2,882)	(467)
Unrealized loss position for available for sale and held to maturity securities in a continuous loss position for more than 12 months	$ (4,196)	$ (5,981)
US Government Agencies Debt Securities [Member]
Summary of gross unrealized losses and fair value of investments
No of holdings | holding	3	22
Fair value, less than 12 months	$ 1,990	$ 21,950
Fair value, 12 months or longer	0	0
Fair value, Total	1,990	21,950
Unrealized losses, Total	(4)	(22)
Unrealized loss position for available for sale and held to maturity securities in a continuous loss position for less than 12 months	$ (4)	(22)
Unrealized loss position for available for sale and held to maturity securities in a continuous loss position for more than 12 months		$ 0
Agency mortgage-backed securities [Member]
Summary of gross unrealized losses and fair value of investments
No of holdings | holding	57	17
Fair value, less than 12 months	$ 112,648	$ 3,471
Fair value, 12 months or longer	4,297	42,222
Fair value, Total	116,945	45,693
Unrealized losses, Total	(1,202)	(693)
Unrealized loss position for available for sale and held to maturity securities in a continuous loss position for less than 12 months	(1,062)	(1)
Unrealized loss position for available for sale and held to maturity securities in a continuous loss position for more than 12 months	$ (140)	$ (692)
Agency collateralized mortgage obligations [Member]
Summary of gross unrealized losses and fair value of investments
No of holdings | holding	23	14
Fair value, less than 12 months	$ 147,707	$ 35,083
Fair value, 12 months or longer	80,927	94,974
Fair value, Total	228,634	130,057
Unrealized losses, Total	(4,404)	(4,101)
Unrealized loss position for available for sale and held to maturity securities in a continuous loss position for less than 12 months	(1,420)	(331)
Unrealized loss position for available for sale and held to maturity securities in a continuous loss position for more than 12 months	$ (2,984)	$ (3,770)
Single issuer trust preferred securities issued by banks and insurers
Summary of gross unrealized losses and fair value of investments
No of holdings | holding	2	2
Fair value, less than 12 months	$ 1,018	$ 2,553
Fair value, 12 months or longer	1,018	0
Fair value, Total	2,036	2,553
Unrealized losses, Total	(81)	(39)
Unrealized loss position for available for sale and held to maturity securities in a continuous loss position for less than 12 months	(33)	(39)
Unrealized loss position for available for sale and held to maturity securities in a continuous loss position for more than 12 months	$ (48)	$ 0
Pooled trust preferred securities issued by banks and insurers
Summary of gross unrealized losses and fair value of investments
No of holdings | holding	1	2
Fair value, less than 12 months	$ 0	$ 0
Fair value, 12 months or longer	1,572	2,681
Fair value, Total	1,572	2,681
Unrealized losses, Total	(645)	(1,356)
Unrealized loss position for available for sale and held to maturity securities in a continuous loss position for less than 12 months	0	0
Unrealized loss position for available for sale and held to maturity securities in a continuous loss position for more than 12 months	$ (645)	$ (1,356)
Small Business Administration Pooled Securities [Member]
Summary of gross unrealized losses and fair value of investments
No of holdings | holding	3
Fair value, less than 12 months	$ 37,986
Fair value, 12 months or longer	0
Fair value, Total	37,986
Unrealized losses, Total	(174)
Unrealized loss position for available for sale and held to maturity securities in a continuous loss position for less than 12 months	$ (174)
Marketable securities [Member]
Summary of gross unrealized losses and fair value of investments
No of holdings | holding	34	23
Fair value, less than 12 months	$ 3,481	$ 1,480
Fair value, 12 months or longer	4,971	4,072
Fair value, Total	8,452	5,552
Unrealized losses, Total	(568)	(237)
Unrealized loss position for available for sale and held to maturity securities in a continuous loss position for less than 12 months	(189)	(74)
Unrealized loss position for available for sale and held to maturity securities in a continuous loss position for more than 12 months	$ (379)	$ (163)

SECURITIES (Details 7)

SECURITIES (Details 7) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Schedule of Available-for-sale Securities [Line Items]
Gross change in OTTI recorded on certain investments		$ 2,098	$ 588
Portion of OTTI recognized in OCI	$ 0	(2,098)	$ (588)
Net impairment losses recognized in earnings on securities	$ 0	$ 0

SECURITIES (Details 8)

SECURITIES (Details 8) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Summary of cumulative credit related component of OTTI
Balance at beginning of period	$ (9,997)	$ (9,997)	$ (10,847)
Add
Incurred on securities not previously impaired	0	0	0
Incurred on securities previously impaired	0	0	0
Less
Securities sold during the period	9,997	0	850
Reclassification due to changes in Company’s intent	0	0	0
Increases in cash flow expected to be collected	0	0	0
Balance at end of period	$ 0	$ (9,997)	$ (9,997)

SECURITIES (Details Textual)

SECURITIES (Details Textual) - USD ($)	Dec. 31, 2015	Dec. 31, 2014
Investments, Debt and Equity Securities [Abstract]
Trading Securities	$ 356,000	$ 0
Available-For-Sale Securities, Other-Than-Temporary Impairment Unrealized Losses, Portion Recognized In Other Comprehensive Income		230,000
Callable securities in investment portfolio	17,700,000
Investment securities pledged	$ 314,100,000	$ 340,000,000

Allowance Allocations (Details

Allowance Allocations (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance				$ 55,100				$ 53,239	$ 55,100	$ 53,239	$ 51,834
Charge-offs									(4,918)	(10,947)	(10,518)
Recoveries									4,143	2,405	1,723
Provision (benefit)	$ 500	$ 800	$ 700	(500)	$ 1,750	$ 1,901	$ 2,250	4,502	1,500	10,403	10,200
Ending balance	55,825				55,100				55,825	55,100	53,239
Ending balance: individually evaluated for impairment	1,930				2,416				1,930	2,416	3,774
Ending balance: collectively evaluated for impairment	53,895				52,684				53,895	52,684	49,465
Financing receivables ending balance:
Financing Receivable, Collectively Evaluated for Impairment	5,475,716				4,890,383				5,475,716	4,890,383	4,616,708
Individually evaluated for impairment	51,410				58,035				51,410	58,035	72,055
Financing Receivable, Net	3,966,324				3,559,403				3,966,324	3,559,403
Loans Receivable, Gross, Commercial and Industrial	843,276				860,839				843,276	860,839
Loans Receivable, Gross, Commercial, Mortgage	2,653,434				2,347,323				2,653,434	2,347,323
Total loans	5,547,721				4,970,733				5,547,721	4,970,733	4,718,307	[1]
Loans and Leases Receivable, Gross, Consumer, Other	14,988				17,208				14,988	17,208
Loans Receivable, Gross, Commercial, Construction	373,368				265,994				373,368	265,994
Small Business	96,246				85,247				96,246	85,247
Loans and Leases Receivable, Gross, Consumer, Mortgage	638,606				530,259				638,606	530,259
Commercial and Industrial [Member]
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance				15,573				15,622	15,573	15,622	13,461
Charge-offs									(2,010)	(2,097)	(2,683)
Recoveries									1,593	462	272
Provision (benefit)									(1,354)	1,586	4,572
Ending balance	13,802				15,573				13,802	15,573	15,622
Ending balance: individually evaluated for impairment	183				412				183	412	1,150
Ending balance: collectively evaluated for impairment	13,619				15,161				13,619	15,161	14,472
Financing receivables ending balance:
Financing Receivable, Collectively Evaluated for Impairment	838,129				856,185				838,129	856,185	775,053
Individually evaluated for impairment	5,147				4,654				5,147	4,654	9,148
Financing Receivable, Net	843,276				860,839				843,276	860,839
Total loans	843,276				860,839				843,276	860,839	784,202
Commercial Real Estate [Member]
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance				25,873				24,541	25,873	24,541	22,598
Charge-offs									(330)	(5,454)	(3,587)
Recoveries									1,073	404	206
Provision (benefit)									711	6,382	5,324
Ending balance	27,327				25,873				27,327	25,873	24,541
Ending balance: individually evaluated for impairment	204				197				204	197	765
Ending balance: collectively evaluated for impairment	27,123				25,676				27,123	25,676	23,776
Financing receivables ending balance:
Financing Receivable, Collectively Evaluated for Impairment	2,619,294				2,304,099				2,619,294	2,304,099	2,191,132
Individually evaluated for impairment	22,986				30,729				22,986	30,729	39,516
Financing Receivable, Net	2,653,434				2,347,323				2,653,434	2,347,323
Total loans	2,653,434				2,347,323				2,653,434	2,347,323	2,249,260
Construction Loans [Member]
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance				3,945				3,371	3,945	3,371	2,811
Charge-offs									0	0	(308)
Recoveries									0	0	100
Provision (benefit)									1,421	574	768
Ending balance	5,366				3,945				5,366	3,945	3,371
Ending balance: individually evaluated for impairment	0				0				0	0	0
Ending balance: collectively evaluated for impairment	5,366				3,945				5,366	3,945	3,371
Financing receivables ending balance:
Financing Receivable, Collectively Evaluated for Impairment	373,064				265,501				373,064	265,501	223,562
Individually evaluated for impairment	304				311				304	311	100
Financing Receivable, Net	373,368				265,994				373,368	265,994
Total loans	373,368				265,994				373,368	265,994	223,859
Small Business [Member]
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance				1,171				1,215	1,171	1,215	1,524
Charge-offs									(267)	(605)	(773)
Recoveries									264	275	279
Provision (benefit)									96	286	185
Ending balance	1,264				1,171				1,264	1,171	1,215
Ending balance: individually evaluated for impairment	4				7				4	7	109
Ending balance: collectively evaluated for impairment	1,260				1,164				1,260	1,164	1,106
Financing receivables ending balance:
Financing Receivable, Collectively Evaluated for Impairment	95,225				84,159				95,225	84,159	75,337
Individually evaluated for impairment	1,021				1,088				1,021	1,088	1,903
Financing Receivable, Net	96,246				85,247				96,246	85,247
Total loans	96,246				85,247				96,246	85,247	77,240
Residential Real Estate [Member]
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance				2,834				2,760	2,834	2,760	2,930
Charge-offs									(285)	(826)	(622)
Recoveries									133	424	143
Provision (benefit)									(92)	476	309
Ending balance	2,590				2,834				2,590	2,834	2,760
Ending balance: individually evaluated for impairment	1,278				1,500				1,278	1,500	1,564
Ending balance: collectively evaluated for impairment	1,312				1,334				1,312	1,334	1,196
Financing receivables ending balance:
Financing Receivable, Collectively Evaluated for Impairment	614,014				505,799				614,014	505,799	515,854
Individually evaluated for impairment	15,405				15,055				15,405	15,055	15,200
Total loans	638,606				530,259				638,606	530,259	541,443
Home Equity [Member]
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance				4,956				5,036	4,956	5,036	7,703
Charge-offs									(710)	(750)	(1,370)
Recoveries									356	249	135
Provision (benefit)									287	421	(1,432)
Ending balance	4,889				4,956				4,889	4,956	5,036
Ending balance: individually evaluated for impairment	238				262				238	262	116
Ending balance: collectively evaluated for impairment	4,651				4,694				4,651	4,694	4,920
Financing receivables ending balance:
Financing Receivable, Collectively Evaluated for Impairment	921,563				858,305				921,563	858,305	816,925
Individually evaluated for impairment	5,989				5,330				5,989	5,330	4,890
Total loans	927,803				863,863				927,803	863,863	822,141
Consumer Portfolio Segment [Member]
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance				$ 748				$ 694	748	694	807
Charge-offs									(1,316)	(1,215)	(1,175)
Recoveries									724	591	588
Provision (benefit)									431	678	474
Ending balance	587				748				587	748	694
Ending balance: individually evaluated for impairment	23				38				23	38	70
Ending balance: collectively evaluated for impairment	564				710				564	710	624
Financing receivables ending balance:
Financing Receivable, Collectively Evaluated for Impairment	14,427				16,335				14,427	16,335	18,845
Individually evaluated for impairment	558				868				558	868	1,298
Total loans					17,208					17,208	20,162
Receivables Acquired with Deteriorated Credit Quality [Member]
Financing receivables ending balance:
Financing Receivable, Net	20,595				22,315				20,595	22,315	29,544
Receivables Acquired with Deteriorated Credit Quality [Member] | Commercial and Industrial [Member]
Financing receivables ending balance:
Financing Receivable, Net	0				0				0	0	1
Receivables Acquired with Deteriorated Credit Quality [Member] | Commercial Real Estate [Member]
Financing receivables ending balance:
Financing Receivable, Net	11,154				12,495				11,154	12,495	18,612
Receivables Acquired with Deteriorated Credit Quality [Member] | Construction Loans [Member]
Financing receivables ending balance:
Financing Receivable, Net	0				182				0	182	197
Receivables Acquired with Deteriorated Credit Quality [Member] | Small Business [Member]
Financing receivables ending balance:
Financing Receivable, Net	0				0				0	0	0
Receivables Acquired with Deteriorated Credit Quality [Member] | Residential Real Estate [Member]
Financing receivables ending balance:
Financing Receivable, Net	9,187				9,405				9,187	9,405	10,389
Receivables Acquired with Deteriorated Credit Quality [Member] | Home Equity [Member]
Financing receivables ending balance:
Financing Receivable, Net	251				228				251	228	326
Receivables Acquired with Deteriorated Credit Quality [Member] | Consumer Portfolio Segment [Member]
Financing receivables ending balance:
Financing Receivable, Net	$ 3				$ 5				$ 3	$ 5	$ 19
[1]	The amount of net deferred fees on loans and net unamortized discounts on acquired loans not deemed to be PCI included in the ending balance was $10.9 million, $4.7 million, and $3.9 million at December 31, 2015, 2014, and 2013, respectively.

Internal Risk Rating Categories

Internal Risk Rating Categories for Commercial Portfolio (Details) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Internal risk-rating categories for the Company's commercial portfolio
Financing Receivable, Net	$ 3,966,324	$ 3,559,403
Commercial and Industrial [Member]
Internal risk-rating categories for the Company's commercial portfolio
Financing Receivable, Net	843,276	860,839
Commercial Real Estate [Member]
Internal risk-rating categories for the Company's commercial portfolio
Financing Receivable, Net	2,653,434	2,347,323
Construction Loans [Member]
Internal risk-rating categories for the Company's commercial portfolio
Financing Receivable, Net	373,368	265,994
Small Business [Member]
Internal risk-rating categories for the Company's commercial portfolio
Financing Receivable, Net	96,246	85,247
Pass [Member]
Internal risk-rating categories for the Company's commercial portfolio
Financing Receivable, Net	3,706,567	3,327,638
Pass [Member] | Commercial and Industrial [Member]
Internal risk-rating categories for the Company's commercial portfolio
Financing Receivable, Net	765,753	801,578
Pass [Member] | Commercial Real Estate [Member]
Internal risk-rating categories for the Company's commercial portfolio
Financing Receivable, Net	2,484,025	2,196,109
Pass [Member] | Construction Loans [Member]
Internal risk-rating categories for the Company's commercial portfolio
Financing Receivable, Net	363,781	248,696
Pass [Member] | Small Business [Member]
Internal risk-rating categories for the Company's commercial portfolio
Financing Receivable, Net	93,008	81,255
Potential weakness [Member]
Internal risk-rating categories for the Company's commercial portfolio
Financing Receivable, Net	176,519	138,570
Potential weakness [Member] | Commercial and Industrial [Member]
Internal risk-rating categories for the Company's commercial portfolio
Financing Receivable, Net	54,375	37,802
Potential weakness [Member] | Commercial Real Estate [Member]
Internal risk-rating categories for the Company's commercial portfolio
Financing Receivable, Net	112,022	82,372
Potential weakness [Member] | Construction Loans [Member]
Internal risk-rating categories for the Company's commercial portfolio
Financing Receivable, Net	7,678	15,464
Potential weakness [Member] | Small Business [Member]
Internal risk-rating categories for the Company's commercial portfolio
Financing Receivable, Net	2,444	2,932
Definite weakness [Member]
Internal risk-rating categories for the Company's commercial portfolio
Financing Receivable, Net	81,990	90,595
Definite weakness [Member] | Commercial and Industrial [Member]
Internal risk-rating categories for the Company's commercial portfolio
Financing Receivable, Net	23,073	20,241
Definite weakness [Member] | Commercial Real Estate [Member]
Internal risk-rating categories for the Company's commercial portfolio
Financing Receivable, Net	56,276	67,571
Definite weakness [Member] | Construction Loans [Member]
Internal risk-rating categories for the Company's commercial portfolio
Financing Receivable, Net	1,909	1,834
Definite weakness [Member] | Small Business [Member]
Internal risk-rating categories for the Company's commercial portfolio
Financing Receivable, Net	732	949
Parital loss probable [Member]
Internal risk-rating categories for the Company's commercial portfolio
Financing Receivable, Net	1,248	2,600
Parital loss probable [Member] | Commercial and Industrial [Member]
Internal risk-rating categories for the Company's commercial portfolio
Financing Receivable, Net	75	1,218
Parital loss probable [Member] | Commercial Real Estate [Member]
Internal risk-rating categories for the Company's commercial portfolio
Financing Receivable, Net	1,111	1,271
Parital loss probable [Member] | Construction Loans [Member]
Internal risk-rating categories for the Company's commercial portfolio
Financing Receivable, Net	0	0
Parital loss probable [Member] | Small Business [Member]
Internal risk-rating categories for the Company's commercial portfolio
Financing Receivable, Net	62	111
Definite loss [Member]
Internal risk-rating categories for the Company's commercial portfolio
Financing Receivable, Net	0	0
Definite loss [Member] | Commercial and Industrial [Member]
Internal risk-rating categories for the Company's commercial portfolio
Financing Receivable, Net	0	0
Definite loss [Member] | Commercial Real Estate [Member]
Internal risk-rating categories for the Company's commercial portfolio
Financing Receivable, Net	0	0
Definite loss [Member] | Construction Loans [Member]
Internal risk-rating categories for the Company's commercial portfolio
Financing Receivable, Net	0	0
Definite loss [Member] | Small Business [Member]
Internal risk-rating categories for the Company's commercial portfolio
Financing Receivable, Net	$ 0	$ 0

Weighted Average FICO Scores &

Weighted Average FICO Scores & weighted Average Combined LTV Ratios (Details) - score	Dec. 31, 2015	Dec. 31, 2014
Residential Portfolio Segment [Member]
Weighted average FICO scores and the weighted average combined LTV Ratio
FICO score (re-scored)	742	739
Financing Receivable With Credit Quality Of Loan Based Upon the Weighted Average Loan-To-Value Ratio	61.40%	67.10%
Home Equity [Member]
Weighted average FICO scores and the weighted average combined LTV Ratio
FICO score (re-scored)	765	764
Financing Receivable With Credit Quality Of Loan Based Upon the Weighted Average Loan-To-Value Ratio	55.80%	53.60%

Summary of Nonaccrual Loans (De

Summary of Nonaccrual Loans (Details) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Financing Receivable Impaired [Line Items]
TDRs on nonaccrual status	$ 5,225	$ 5,248
Financing Receivable, Recorded Investment, Nonaccrual Status	27,690	27,393
Commercial and Industrial [Member]
Financing Receivable Impaired [Line Items]
Financing Receivable, Recorded Investment, Nonaccrual Status	3,699	2,822
Commercial Real Estate [Member]
Financing Receivable Impaired [Line Items]
Financing Receivable, Recorded Investment, Nonaccrual Status	7,856	7,279
Construction Loans [Member]
Financing Receivable Impaired [Line Items]
Financing Receivable, Recorded Investment, Nonaccrual Status	304	311
Small Business [Member]
Financing Receivable Impaired [Line Items]
Financing Receivable, Recorded Investment, Nonaccrual Status	239	246
Residential Real Estate [Member]
Financing Receivable Impaired [Line Items]
Financing Receivable, Recorded Investment, Nonaccrual Status	8,795	8,697
Home Equity [Member]
Financing Receivable Impaired [Line Items]
Financing Receivable, Recorded Investment, Nonaccrual Status	6,742	8,038
Consumer Portfolio Segment [Member]
Financing Receivable Impaired [Line Items]
Financing Receivable, Recorded Investment, Nonaccrual Status	$ 55	$ 0

Age Analysis of Past Due Financ

Age Analysis of Past Due Financing receivables (Details) $ in Thousands	Dec. 31, 2015USD ($)loan	Dec. 31, 2014USD ($)loan	Dec. 31, 2013USD ($)
Age Analysis of Past Due Financing Receivables
Number of Loans 30-59 Days | loan	377	396
Number of Loans 60-89 Days | loan	48	57
Number of Loans 90 Days or More | loan	87	117
Number of Loans Total Past Due | loan	512	570
Principal Balance Total Past Due	$ 31,057	$ 39,758
Current	5,516,664	4,930,975
Loans and Leases Receivable, Gross	5,547,721	4,970,733	$ 4,718,307	[1]
Total Financing Receivables	5,547,721	4,970,733
Recorded Investment >90 Days and Accruing	$ 0	$ 119
Commercial and Industrial [Member]
Age Analysis of Past Due Financing Receivables
Number of Loans 30-59 Days | loan	9	18
Number of Loans 60-89 Days | loan	4	10
Number of Loans 90 Days or More | loan	8	19
Number of Loans Total Past Due | loan	21	47
Principal Balance Total Past Due	$ 4,459	$ 6,519
Current	838,817	854,320
Loans and Leases Receivable, Gross	843,276	860,839	784,202
Recorded Investment >90 Days and Accruing	$ 0	$ 0
Commercial Real Estate [Member]
Age Analysis of Past Due Financing Receivables
Number of Loans 30-59 Days | loan	19	19
Number of Loans 60-89 Days | loan	6	6
Number of Loans 90 Days or More | loan	13	16
Number of Loans Total Past Due | loan	38	41
Principal Balance Total Past Due	$ 13,434	$ 19,133
Current	2,640,000	2,328,190
Loans and Leases Receivable, Gross	2,653,434	2,347,323	2,249,260
Recorded Investment >90 Days and Accruing	$ 0	$ 0
Construction Loans [Member]
Age Analysis of Past Due Financing Receivables
Number of Loans 30-59 Days | loan	0	1
Number of Loans 60-89 Days | loan	0	0
Number of Loans 90 Days or More | loan	1	1
Number of Loans Total Past Due | loan	1	2
Principal Balance Total Past Due	$ 304	$ 817
Current	373,064	265,177
Loans and Leases Receivable, Gross	373,368	265,994	223,859
Recorded Investment >90 Days and Accruing	$ 0	$ 0
Small Business [Member]
Age Analysis of Past Due Financing Receivables
Number of Loans 30-59 Days | loan	11	7
Number of Loans 60-89 Days | loan	4	8
Number of Loans 90 Days or More | loan	13	7
Number of Loans Total Past Due | loan	28	22
Principal Balance Total Past Due	$ 171	$ 307
Current	96,075	84,940
Loans and Leases Receivable, Gross	96,246	85,247	77,240
Recorded Investment >90 Days and Accruing	$ 0	$ 0
Residential Real Estate [Member]
Age Analysis of Past Due Financing Receivables
Number of Loans 30-59 Days | loan	20	13
Number of Loans 60-89 Days | loan	11	10
Number of Loans 90 Days or More | loan	19	36
Number of Loans Total Past Due | loan	50	59
Principal Balance Total Past Due	$ 8,601	$ 8,294
Current	630,005	521,965
Loans and Leases Receivable, Gross	638,606	530,259	541,443
Recorded Investment >90 Days and Accruing	$ 0	$ 106
Home Equity [Member]
Age Analysis of Past Due Financing Receivables
Number of Loans 30-59 Days | loan	21	20
Number of Loans 60-89 Days | loan	11	7
Number of Loans 90 Days or More | loan	20	23
Number of Loans Total Past Due | loan	52	50
Principal Balance Total Past Due	$ 3,767	$ 4,268
Current	924,036	859,595
Loans and Leases Receivable, Gross	927,803	863,863	822,141
Recorded Investment >90 Days and Accruing	$ 0	$ 0
Consumer Portfolio Segment [Member]
Age Analysis of Past Due Financing Receivables
Number of Loans 30-59 Days | loan	297	318
Number of Loans 60-89 Days | loan	12	16
Number of Loans 90 Days or More | loan	13	15
Number of Loans Total Past Due | loan	322	349
Principal Balance Total Past Due	$ 321	$ 420
Current	14,667	16,788
Loans and Leases Receivable, Gross		17,208	$ 20,162
Total Financing Receivables	14,988
Recorded Investment >90 Days and Accruing	0	13
Financing Receivables, 30 to 59 Days Past Due [Member]
Age Analysis of Past Due Financing Receivables
Principal Balance Total Past Due	12,717	20,758
Financing Receivables, 30 to 59 Days Past Due [Member] | Commercial and Industrial [Member]
Age Analysis of Past Due Financing Receivables
Principal Balance Total Past Due	399	3,192
Financing Receivables, 30 to 59 Days Past Due [Member] | Commercial Real Estate [Member]
Age Analysis of Past Due Financing Receivables
Principal Balance Total Past Due	7,349	13,428
Financing Receivables, 30 to 59 Days Past Due [Member] | Construction Loans [Member]
Age Analysis of Past Due Financing Receivables
Principal Balance Total Past Due	0	506
Financing Receivables, 30 to 59 Days Past Due [Member] | Small Business [Member]
Age Analysis of Past Due Financing Receivables
Principal Balance Total Past Due	93	21
Financing Receivables, 30 to 59 Days Past Due [Member] | Residential Real Estate [Member]
Age Analysis of Past Due Financing Receivables
Principal Balance Total Past Due	3,119	1,670
Financing Receivables, 30 to 59 Days Past Due [Member] | Home Equity [Member]
Age Analysis of Past Due Financing Receivables
Principal Balance Total Past Due	1,526	1,559
Financing Receivables, 30 to 59 Days Past Due [Member] | Consumer Portfolio Segment [Member]
Age Analysis of Past Due Financing Receivables
Principal Balance Total Past Due	231	382
Financing Receivables, 60 to 89 Days Past Due [Member]
Age Analysis of Past Due Financing Receivables
Principal Balance Total Past Due	5,674	4,728
Financing Receivables, 60 to 89 Days Past Due [Member] | Commercial and Industrial [Member]
Age Analysis of Past Due Financing Receivables
Principal Balance Total Past Due	1,021	1,007
Financing Receivables, 60 to 89 Days Past Due [Member] | Commercial Real Estate [Member]
Age Analysis of Past Due Financing Receivables
Principal Balance Total Past Due	1,627	1,480
Financing Receivables, 60 to 89 Days Past Due [Member] | Construction Loans [Member]
Age Analysis of Past Due Financing Receivables
Principal Balance Total Past Due	0	0
Financing Receivables, 60 to 89 Days Past Due [Member] | Small Business [Member]
Age Analysis of Past Due Financing Receivables
Principal Balance Total Past Due	9	113
Financing Receivables, 60 to 89 Days Past Due [Member] | Residential Real Estate [Member]
Age Analysis of Past Due Financing Receivables
Principal Balance Total Past Due	2,049	1,798
Financing Receivables, 60 to 89 Days Past Due [Member] | Home Equity [Member]
Age Analysis of Past Due Financing Receivables
Principal Balance Total Past Due	903	307
Financing Receivables, 60 to 89 Days Past Due [Member] | Consumer Portfolio Segment [Member]
Age Analysis of Past Due Financing Receivables
Principal Balance Total Past Due	65	23
Financing Receivables, Equal to Greater than 90 Days Past Due [Member]
Age Analysis of Past Due Financing Receivables
Principal Balance Total Past Due	12,666	14,272
Financing Receivables, Equal to Greater than 90 Days Past Due [Member] | Commercial and Industrial [Member]
Age Analysis of Past Due Financing Receivables
Principal Balance Total Past Due	3,039	2,320
Financing Receivables, Equal to Greater than 90 Days Past Due [Member] | Commercial Real Estate [Member]
Age Analysis of Past Due Financing Receivables
Principal Balance Total Past Due	4,458	4,225
Financing Receivables, Equal to Greater than 90 Days Past Due [Member] | Construction Loans [Member]
Age Analysis of Past Due Financing Receivables
Principal Balance Total Past Due	304	311
Financing Receivables, Equal to Greater than 90 Days Past Due [Member] | Small Business [Member]
Age Analysis of Past Due Financing Receivables
Principal Balance Total Past Due	69	173
Financing Receivables, Equal to Greater than 90 Days Past Due [Member] | Residential Real Estate [Member]
Age Analysis of Past Due Financing Receivables
Principal Balance Total Past Due	3,433	4,826
Financing Receivables, Equal to Greater than 90 Days Past Due [Member] | Home Equity [Member]
Age Analysis of Past Due Financing Receivables
Principal Balance Total Past Due	1,338	2,402
Financing Receivables, Equal to Greater than 90 Days Past Due [Member] | Consumer Portfolio Segment [Member]
Age Analysis of Past Due Financing Receivables
Principal Balance Total Past Due	$ 25	$ 15
[1]	The amount of net deferred fees on loans and net unamortized discounts on acquired loans not deemed to be PCI included in the ending balance was $10.9 million, $4.7 million, and $3.9 million at December 31, 2015, 2014, and 2013, respectively.

TDR's and Other Pertinent Infor

TDR's and Other Pertinent Information (Details) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Summary of Troubled Debt Restructurings and other pertinent information
TDRs on accrual status	$ 32,849	$ 38,382
TDRs on nonaccrual status	5,225	5,248
Total TDRs	38,074	43,630
Amount of specific reserves included in the allowance for loan loss associated with TDRs:	1,628	2,004
Additional commitments to lend to a borrower who has been a party to a TDR:	$ 972	$ 1,400

Modification which Occurred Dur

Modification which Occurred During the Period & Change in Recorded Investment(Details) $ in Thousands	12 Months Ended
	Dec. 31, 2015USD ($)contract	Dec. 31, 2014USD ($)contract	Dec. 31, 2013USD ($)contract
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Number of Contracts | contract	44	51	67
Financing Receivable, Modifications, Pre-Modification Recorded Investment	$ 6,085	$ 7,609	$ 13,163
TROUBLED DEBT RESTRUCTURINGS:
Post-Modification Outstanding Recorded Investment	$ 6,112	$ 7,645	$ 13,189
Consumer Portfolio Segment [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Number of Contracts | contract		1	9
Financing Receivable, Modifications, Pre-Modification Recorded Investment		$ 8	$ 27
TROUBLED DEBT RESTRUCTURINGS:
Post-Modification Outstanding Recorded Investment		$ 8	$ 27
Home Equity Line of Credit [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Number of Contracts | contract	8	11	17
Financing Receivable, Modifications, Pre-Modification Recorded Investment	$ 694	$ 923	$ 1,347
TROUBLED DEBT RESTRUCTURINGS:
Post-Modification Outstanding Recorded Investment	$ 694	$ 926	$ 1,347
Residential Real Estate [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Number of Contracts | contract	8	9	9
Financing Receivable, Modifications, Pre-Modification Recorded Investment	$ 843	$ 1,535	$ 2,401
TROUBLED DEBT RESTRUCTURINGS:
Post-Modification Outstanding Recorded Investment	$ 870	$ 1,568	$ 2,427
Small Business [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Number of Contracts | contract	9	5	12
Financing Receivable, Modifications, Pre-Modification Recorded Investment	$ 293	$ 133	$ 556
TROUBLED DEBT RESTRUCTURINGS:
Post-Modification Outstanding Recorded Investment	$ 293	$ 133	$ 556
Commercial Real Estate [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Number of Contracts | contract	6	13	9
Financing Receivable, Modifications, Pre-Modification Recorded Investment	$ 2,941	$ 4,329	$ 8,100
TROUBLED DEBT RESTRUCTURINGS:
Post-Modification Outstanding Recorded Investment	$ 2,941	$ 4,329	$ 8,100
Commercial And Industrial [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Number of Contracts | contract	13	12	11
Financing Receivable, Modifications, Pre-Modification Recorded Investment	$ 1,314	$ 681	$ 732
TROUBLED DEBT RESTRUCTURINGS:
Post-Modification Outstanding Recorded Investment	$ 1,314	$ 681	$ 732

Post-modification balance of TD

Post-modification balance of TDRs Listed by type of Modification(Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Loans, Allowance for Loan Losses and Credit Quality [Abstract]
Extended maturity	$ 2,936	$ 3,441	$ 3,582
Adjusted interest rate	0	727
Combination rate and maturity	2,199	2,640	8,917
Court ordered concession	977	837	690
Total	$ 6,112	$ 7,645	$ 13,189

TDR's that have subsequent defa

TDR's that have subsequent default (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2015USD ($)contract	Dec. 31, 2014USD ($)contract	Dec. 31, 2013USD ($)contract
TROUBLED DEBT RESTRUCTURINGS THAT SUBSEQUENTLY DEFAULTED:
Recorded Investment | $	$ 1,267	$ 410	$ 177
Financing Receivable, Modifications, Subsequent Default, Number of Contracts | contract	7	5	2
Commercial And Industrial [Member]
TROUBLED DEBT RESTRUCTURINGS THAT SUBSEQUENTLY DEFAULTED:
Recorded Investment | $	$ 339	$ 196	$ 0
Financing Receivable, Modifications, Subsequent Default, Number of Contracts | contract	3	2	0
Commercial Real Estate [Member]
TROUBLED DEBT RESTRUCTURINGS THAT SUBSEQUENTLY DEFAULTED:
Recorded Investment | $	$ 502	$ 0	$ 176
Financing Receivable, Modifications, Subsequent Default, Number of Contracts | contract	1	0	1
Residential Real Estate [Member]
TROUBLED DEBT RESTRUCTURINGS THAT SUBSEQUENTLY DEFAULTED:
Recorded Investment | $	$ 326	$ 214	$ 0
Financing Receivable, Modifications, Subsequent Default, Number of Contracts | contract	2	3	0
Home Equity Line of Credit [Member]
TROUBLED DEBT RESTRUCTURINGS THAT SUBSEQUENTLY DEFAULTED:
Recorded Investment | $	$ 100	$ 0	$ 0
Financing Receivable, Modifications, Subsequent Default, Number of Contracts | contract	1	0	0
Consumer Portfolio Segment [Member]
TROUBLED DEBT RESTRUCTURINGS THAT SUBSEQUENTLY DEFAULTED:
Recorded Investment | $	$ 0	$ 0	$ 1
Financing Receivable, Modifications, Subsequent Default, Number of Contracts | contract	0	0	1

Imparied Loan Information by Po

Imparied Loan Information by Portfolio (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Impaired loans by loan portfolio
Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment	$ 1,930	$ 2,416	$ 3,774
Related Allowance	1,930	2,416	3,774
Recorded Investment	51,410	58,035	72,055
Unpaid Principal Balance	54,822	61,887	75,817
Average Recorded Investment	51,678	62,202	76,523
Interest Income Recognized	1,993	3,242	3,968
Commercial and Industrial [Member]
Impaired loans by loan portfolio
Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment	183	412	1,150
Commercial Real Estate [Member]
Impaired loans by loan portfolio
Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment	204	197	765
Construction Loans [Member]
Impaired loans by loan portfolio
Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment	0	0	0
Small Business [Member]
Impaired loans by loan portfolio
Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment	4	7	109
Residential Real Estate [Member]
Impaired loans by loan portfolio
Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment	1,278	1,500	1,564
Home Equity [Member]
Impaired loans by loan portfolio
Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment	238	262	116
Consumer Portfolio Segment [Member]
Impaired loans by loan portfolio
Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment	23	38	70
With No Related Allowance Recorded [Member]
Impaired loans by loan portfolio
Recorded Investment	24,403	26,936	29,685
Unpaid Principal Balance	26,276	28,535	32,186
Average Recorded Investment	24,774	29,464	32,896
Interest Income Recognized	835	1,665	1,915
Related Allowance	0	0
With No Related Allowance Recorded [Member] | Commercial and Industrial [Member]
Impaired loans by loan portfolio
Recorded Investment	2,613	3,005	7,147
Unpaid Principal Balance	3,002	3,278	7,288
Average Recorded Investment	3,024	4,557	7,338
Interest Income Recognized	71	258	338
Related Allowance	0	0
With No Related Allowance Recorded [Member] | Commercial Real Estate [Member]
Impaired loans by loan portfolio
Recorded Investment	12,008	15,982	14,283
Unpaid Principal Balance	13,128	17,164	15,891
Average Recorded Investment	11,676	16,703	15,728
Interest Income Recognized	375	1,025	1,075
Related Allowance	0	0
With No Related Allowance Recorded [Member] | Construction Loans [Member]
Impaired loans by loan portfolio
Recorded Investment	304	311	100
Unpaid Principal Balance	305	311	408
Average Recorded Investment	308	311	1,105
Interest Income Recognized		13	43
Related Allowance	0	0	0
With No Related Allowance Recorded [Member] | Small Business [Member]
Impaired loans by loan portfolio
Recorded Investment	527	692	1,474
Unpaid Principal Balance	618	718	1,805
Average Recorded Investment	584	772	1,854
Interest Income Recognized	22	45	121
Related Allowance	0	0
With No Related Allowance Recorded [Member] | Residential Real Estate [Member]
Impaired loans by loan portfolio
Recorded Investment	3,874	2,439	1,972
Unpaid Principal Balance	4,033	2,502	2,026
Average Recorded Investment	3,958	2,493	2,021
Interest Income Recognized	157	102	95
Related Allowance	0	0
With No Related Allowance Recorded [Member] | Home Equity [Member]
Impaired loans by loan portfolio
Recorded Investment	4,893	4,169	4,263
Unpaid Principal Balance	5,005	4,221	4,322
Average Recorded Investment	5,023	4,264	4,335
Interest Income Recognized	195	198	202
Related Allowance	0	0
With No Related Allowance Recorded [Member] | Consumer Portfolio Segment [Member]
Impaired loans by loan portfolio
Recorded Investment	184	338	446
Unpaid Principal Balance	185	341	446
Average Recorded Investment	201	364	515
Interest Income Recognized	15	24	41
Related Allowance	0	0
With Allowance Recorded [Member]
Impaired loans by loan portfolio
Recorded Investment	27,007	31,099	42,370
Unpaid Principal Balance	28,546	33,352	43,631
Average Recorded Investment	26,904	32,738	43,627
Interest Income Recognized	1,158	1,577	2,053
With Allowance Recorded [Member] | Commercial and Industrial [Member]
Impaired loans by loan portfolio
Recorded Investment	2,534	1,649	2,001
Unpaid Principal Balance	2,648	1,859	2,045
Average Recorded Investment	2,848	2,032	2,572
Interest Income Recognized	48	98	125
With Allowance Recorded [Member] | Commercial Real Estate [Member]
Impaired loans by loan portfolio
Recorded Investment	10,978	14,747	25,233
Unpaid Principal Balance	11,047	15,514	25,377
Average Recorded Investment	10,789	15,650	25,595
Interest Income Recognized	592	842	1,326
With Allowance Recorded [Member] | Small Business [Member]
Impaired loans by loan portfolio
Recorded Investment	494	396	429
Unpaid Principal Balance	523	458	462
Average Recorded Investment	535	456	459
Interest Income Recognized	30	32	28
With Allowance Recorded [Member] | Residential Real Estate [Member]
Impaired loans by loan portfolio
Recorded Investment	11,531	12,616	13,228
Unpaid Principal Balance	12,652	13,727	14,197
Average Recorded Investment	11,669	12,817	13,405
Interest Income Recognized	460	537	515
With Allowance Recorded [Member] | Home Equity [Member]
Impaired loans by loan portfolio
Recorded Investment	1,096	1,161	627
Unpaid Principal Balance	1,287	1,264	694
Average Recorded Investment	655	1,203	642
Interest Income Recognized	14	46	26
With Allowance Recorded [Member] | Consumer Portfolio Segment [Member]
Impaired loans by loan portfolio
Recorded Investment	374	530	852
Unpaid Principal Balance	389	530	856
Average Recorded Investment	408	580	954
Interest Income Recognized	$ 14	$ 22	$ 33

Purchased Credit Impaired Loans

Purchased Credit Impaired Loans - Outstanding/Carrying Balance (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014
Certain Loans Acquired in Transfer Accounted for as Debt Securities, Accretable Yield Movement Schedule [Roll Forward]
Beginning balance	$ 2,974	$ 2,514
Acquisition	319	0
Accretion	(2,485)	(2,299)
Certainloansacquiredinatransfernotaccountedforasdebtsecuritiesaccretableyieldadjustmentchangesinexpectedcashflow	1,721	2,565
Reclassification from nonaccretable difference for loans with improved cash flows	298	194
Beginning balance	$ 2,827	$ 2,974

LOANS, ALLOWANCE FOR LOAN LOS78

LOANS, ALLOWANCE FOR LOAN LOSSES AND CREDIT QUALITY (Details Textual) - USD ($)	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Loans, Allowance for Loan Losses and Credit Quality [Abstract]
Unamortized Loan Commitment and Origination Fees and Unamortized Discounts or Premiums	$ 10,900,000	$ 4,700,000	$ 3,900,000
Days To Be Termed As Non Accrual Loans	90 days
Significant advanced considered for risk rating change	$ 50,000
TDRs on nonaccrual status	$ 5,225,000	$ 5,248,000

LOANS, ALLOWANCE FOR LOAN LOS79

LOANS, ALLOWANCE FOR LOAN LOSSES AND CREDIT QUALITY Activity in the Accretable Yield PCI Loans(Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014
Outstanding and Carrying Amounts of Purchase Credit Impaired Loans [Line Items]
Certainloansacquiredinatransfernotaccountedforasdebtsecuritiesaccretableyieldadjustmentchangesinexpectedcashflow	$ 1,721	$ 2,565
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Outstanding Balance	23,199	25,279
Financing Receivable, Net	$ 3,966,324	$ 3,559,403

LOANS, ALLOWANCE FOR LOAN LOS80

LOANS, ALLOWANCE FOR LOAN LOSSES AND CREDIT QUALITY Foreclosed Residential Real Estate Property (Details) $ in Thousands	Dec. 31, 2015USD ($)
Foreclosed Residential Real Estate Property [Line Items]
Foreclosed residential real estate property held by the creditor	$ 1,430
Mortgage Loans in Process of Foreclosure, Amount	$ 285

BANK PREMISES AND EQUIPMENT (De

BANK PREMISES AND EQUIPMENT (Details) - USD ($)	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Property, Plant and Equipment [Line Items]
Total cost	$ 138,115,000	$ 119,902,000
Accumulated depreciation	(62,452,000)	(55,828,000)
Net bank premises and equipment	75,663,000	64,074,000
Depreciation expense	7,000,000	6,600,000	$ 6,100,000
Impairment of Long-Lived Assets to be Disposed of	109,000	670,000	$ 93,000
Land [Member]
Property, Plant and Equipment [Line Items]
Total cost	20,780,000	15,786,000
Bank Premises [Member]
Property, Plant and Equipment [Line Items]
Total cost	$ 39,182,000	33,425,000
Bank Premises [Member] | Minimum [Member]
Property, Plant and Equipment [Line Items]
Estimated useful lives	5 years
Bank Premises [Member] | Maximum [Member]
Property, Plant and Equipment [Line Items]
Estimated useful lives	39 years
Leasehold Improvements [Member]
Property, Plant and Equipment [Line Items]
Total cost	$ 22,817,000	20,797,000
Leasehold Improvements [Member] | Minimum [Member]
Property, Plant and Equipment [Line Items]
Estimated useful lives	1 year
Leasehold Improvements [Member] | Maximum [Member]
Property, Plant and Equipment [Line Items]
Estimated useful lives	27 years
Furniture and Equipment [Member]
Property, Plant and Equipment [Line Items]
Total cost	$ 55,336,000	$ 49,894,000
Furniture and Equipment [Member] | Minimum [Member]
Property, Plant and Equipment [Line Items]
Estimated useful lives	1 year
Furniture and Equipment [Member] | Maximum [Member]
Property, Plant and Equipment [Line Items]
Estimated useful lives	12 years

GOODWILL AND IDENTIFIABLE INT82

GOODWILL AND IDENTIFIABLE INTANGIBLE ASSETS (Details) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Finite-Lived Intangible Assets [Line Items]
Goodwill	$ 201,083	$ 170,421	$ 170,421
Other Intangible Assets	11,826	9,885
Total goodwill and other intangible assets	212,909	180,306
Core deposit intangibles [Member]
Finite-Lived Intangible Assets [Line Items]
Other Intangible Assets	10,264	9,269
Other identifiable Intangible Assets [Member]
Finite-Lived Intangible Assets [Line Items]
Other Intangible Assets	$ 1,562	$ 616

GOODWILL AND IDENTIFIABLE INT83

GOODWILL AND IDENTIFIABLE INTANGIBLE ASSETS (Details 1) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014
Goodwill [Roll Forward]
Balance at beginning of year	$ 170,421	$ 170,421
Acquisitions	30,662	0
Balance at end of year	$ 201,083	$ 170,421

GOODWILL AND IDENTIFIABLE INT84

GOODWILL AND IDENTIFIABLE INTANGIBLE ASSETS (Details 2) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 26,418	$ 22,087
Accumulated Amortization	(14,592)	(12,202)
Net Carrying Amount	11,826	9,885
Core deposits [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	23,367	20,147
Accumulated Amortization	(13,103)	(10,878)
Net Carrying Amount	10,264	9,269
Other intangible assets [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	3,051	1,940
Accumulated Amortization	(1,489)	(1,324)
Net Carrying Amount	$ 1,562	$ 616

GOODWILL AND IDENTIFIABLE INT85

GOODWILL AND IDENTIFIABLE INTANGIBLE ASSETS (Details 3) $ in Thousands	Dec. 31, 2015USD ($)
Finite-Lived Intangible Assets, Net, Amortization Expense, Fiscal Year Maturity [Abstract]
2,016	$ 2,767
2,017	2,747
2,018	1,781
2,019	1,135
2,020	$ 948

GOODWILL AND IDENTIFIABLE INT86

GOODWILL AND IDENTIFIABLE INTANGIBLE ASSETS (Details Textual) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Finite-Lived Intangible Assets [Line Items]
Amortization of intangible assets	$ 2.8	$ 2.3	$ 2.1
Weighted average amortization period for intangible assets	9 years 9 months

DEPOSITS (Details)

DEPOSITS (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014
Banking and Thrift [Abstract]
Deposit Liabilities Reclassified as Loans Receivable	$ 2,800	$ 3,500
Time Deposits, Fiscal Year Maturity [Abstract]
1 year or less	488,046	462,506
Over 1 year to 2 years	83,244	102,385
Over 2 years to 3 years	31,017	29,044
Over 3 years to 4 years	35,448	26,156
Over 4 years to 5 years	47,075	29,529
Time Deposits	$ 684,830	$ 649,620
1 year or less (as percent)	71.20%	71.20%
Over 1 years to 2 years (as percent)	12.20%	15.80%
Over 2 years to 3 years (as percent)	4.50%	4.50%
Over 3 years to 4 years (as percent)	5.20%	4.00%
Over 4 years to 5 years (as percent)	6.90%	4.50%
Time Deposits (as percent)	100.00%	100.00%
Deposit Liabilities, Collateral Issued, Description	179,568	173,049
Deposits over $250,000.00	$ 69,600	$ 54,500

BORROWINGS (FHLB Advances) (Det

BORROWINGS (FHLB Advances) (Details) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Debt Disclosure [Abstract]
Federal Home Loan Bank, Advances, Maturities Summary, Due in Next Twelve Months	$ 52,025	$ 38,001
Federal Home Loan Bank, Advances, Activity for Year, Average Interest Rate for Year	2.26%	0.69%
Federal Home Loan Bank, Advances, Maturities Summary, Due in Year Two	$ 40,154	$ 0
Federal Home Loan Bank, Advances, Maturities Summary, Average Interest Rate, One to Two Years from Balance Sheet Date	3.10%	0.00%
Federal Home Loan Bank, Advances, Maturities Summary, Due in Year Three	$ 7,043	$ 31,203
Federal Home Loan Bank, Advances, Maturities Summary, Average Interest Rate, Two to Three Years from Balance Sheet Date	1.75%	4.03%
Federal Home Loan Bank, Advances, Maturities Summary, Due in Year Four	$ 2,011	$ 0
Federal Home Loan Bank, Advances, Maturities Summary, Average Interest Rate, Three to Four Years from Balance Sheet Date	1.99%	0.00%
Federal Home Loan Bank, Advances, Maturities Summary, Due in Year Five		$ 0
Federal Home Loan Bank, Advances, Maturities Summary, Average Interest Rate, Four to Five Years from Balance Sheet Date		0.00%
Federal Home Loan Bank, Advances, Branch of FHLB Bank, Amount of Advances	$ 101,233	$ 69,204
Federal Home Loan Bank, Advances, General Debt Obligations, Disclosures, Weighted Average Interest Rate	2.53%	2.20%
Debt Instrument, Unamortized Premium	$ 847	$ 876
Total Federal Home Loan Bank Advances	$ 102,080	$ 70,080

BORROWINGS Repurchase Agreement

BORROWINGS Repurchase Agreements (Details) $ in Thousands	Dec. 31, 2015USD ($)
Assets Sold under Agreements to Repurchase [Line Items]
Assets Sold under Agreements to Repurchase, Repurchase Liability	$ 133,958
U.S. Government agency securities
Assets Sold under Agreements to Repurchase [Line Items]
Assets Sold under Agreements to Repurchase, Repurchase Liability	10,157
Agency mortgage-backed securities
Assets Sold under Agreements to Repurchase [Line Items]
Assets Sold under Agreements to Repurchase, Repurchase Liability	69,142
Collateralized Debt Obligations [Member]
Assets Sold under Agreements to Repurchase [Line Items]
Assets Sold under Agreements to Repurchase, Repurchase Liability	54,659
Maturity Overnight [Member]
Assets Sold under Agreements to Repurchase [Line Items]
Assets Sold under Agreements to Repurchase, Repurchase Liability	133,958
Maturity Overnight [Member] | U.S. Government agency securities
Assets Sold under Agreements to Repurchase [Line Items]
Assets Sold under Agreements to Repurchase, Repurchase Liability	10,157
Maturity Overnight [Member] | Agency mortgage-backed securities
Assets Sold under Agreements to Repurchase [Line Items]
Assets Sold under Agreements to Repurchase, Repurchase Liability	69,142
Maturity Overnight [Member] | Collateralized Debt Obligations [Member]
Assets Sold under Agreements to Repurchase [Line Items]
Assets Sold under Agreements to Repurchase, Repurchase Liability	54,659
Maturity 30 to 90 Days [Member]
Assets Sold under Agreements to Repurchase [Line Items]
Assets Sold under Agreements to Repurchase, Repurchase Liability	0
Maturity 30 to 90 Days [Member] | U.S. Government agency securities
Assets Sold under Agreements to Repurchase [Line Items]
Assets Sold under Agreements to Repurchase, Repurchase Liability	0
Maturity 30 to 90 Days [Member] | Agency mortgage-backed securities
Assets Sold under Agreements to Repurchase [Line Items]
Assets Sold under Agreements to Repurchase, Repurchase Liability	0
Maturity 30 to 90 Days [Member] | Collateralized Debt Obligations [Member]
Assets Sold under Agreements to Repurchase [Line Items]
Assets Sold under Agreements to Repurchase, Repurchase Liability	0
Maturity Less than 30 Days [Member]
Assets Sold under Agreements to Repurchase [Line Items]
Assets Sold under Agreements to Repurchase, Repurchase Liability	0
Maturity Less than 30 Days [Member] | U.S. Government agency securities
Assets Sold under Agreements to Repurchase [Line Items]
Assets Sold under Agreements to Repurchase, Repurchase Liability	0
Maturity Less than 30 Days [Member] | Agency mortgage-backed securities
Assets Sold under Agreements to Repurchase [Line Items]
Assets Sold under Agreements to Repurchase, Repurchase Liability	0
Maturity Less than 30 Days [Member] | Collateralized Debt Obligations [Member]
Assets Sold under Agreements to Repurchase [Line Items]
Assets Sold under Agreements to Repurchase, Repurchase Liability	0
Maturity Greater than 90 Days [Member]
Assets Sold under Agreements to Repurchase [Line Items]
Assets Sold under Agreements to Repurchase, Repurchase Liability	0
Maturity Greater than 90 Days [Member] | U.S. Government agency securities
Assets Sold under Agreements to Repurchase [Line Items]
Assets Sold under Agreements to Repurchase, Repurchase Liability	0
Maturity Greater than 90 Days [Member] | Agency mortgage-backed securities
Assets Sold under Agreements to Repurchase [Line Items]
Assets Sold under Agreements to Repurchase, Repurchase Liability	0
Maturity Greater than 90 Days [Member] | Collateralized Debt Obligations [Member]
Assets Sold under Agreements to Repurchase [Line Items]
Assets Sold under Agreements to Repurchase, Repurchase Liability	$ 0

BORROWINGS (Long-Term Debt) (De

BORROWINGS (Long-Term Debt) (Details) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Debt Instrument [Line Items]
Wholesale Repurchase Agreements	$ 0	$ 50,000
Total Long-Term Borrowings	108,464	188,685
Subordinated Debt	35,000	65,000
Wholesale Repurchase Agreements [Member]
Debt Instrument [Line Items]
Total Long-Term Borrowings		50,000
Junior Subordinated Debentures [Member] | Capital Trust V Preferred Securities Due in 2037 [Member]
Debt Instrument [Line Items]
Total Long-Term Borrowings	51,547	51,547
Junior Subordinated Debentures [Member] | Slades Ferry Trust I Preferred Securities Due in 2034 [Member]
Debt Instrument [Line Items]
Total Long-Term Borrowings	10,310	10,310
Junior Subordinated Debentures [Member] | Central Bancorp Capital Trust I Securities Due in 2034 [Member]
Debt Instrument [Line Items]
Total Long-Term Borrowings	5,258	5,258
Junior Subordinated Debentures [Member] | Central Bancorp Capital Trust II Securities Due in 2037 [Member]
Debt Instrument [Line Items]
Total Long-Term Borrowings	$ 6,349	6,570
Subordinated Debentures [Member] | Subordinated Debentures Due August 27, 2018 [Member]
Debt Instrument [Line Items]
Total Long-Term Borrowings		$ 65,000

BORROWINGS (Trust Preferred Sec

BORROWINGS (Trust Preferred Securities) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014
Debt Instrument [Line Items]
Face Amount	$ 71	$ 71
Junior Subordinated Debentures [Member] | Capital Trust V Preferred Securities Due in 2037 [Member]
Debt Instrument [Line Items]
Face Amount	$ 50
Fixed rate	6.52%
Junior Subordinated Debentures [Member] | Capital Trust V Preferred Securities Due in 2037 [Member] | LIBOR [Member]
Debt Instrument [Line Items]
Basis spread on variable rate	1.48%
Junior Subordinated Debentures [Member] | Slades Ferry Trust I Preferred Securities Due in 2034 [Member]
Debt Instrument [Line Items]
Face Amount	$ 10
Junior Subordinated Debentures [Member] | Slades Ferry Trust I Preferred Securities Due in 2034 [Member] | LIBOR [Member]
Debt Instrument [Line Items]
Basis spread on variable rate	2.79%
Junior Subordinated Debentures [Member] | Central Bancorp Capital Trust I Securities Due in 2034 [Member]
Debt Instrument [Line Items]
Face Amount	$ 5.1
Junior Subordinated Debentures [Member] | Central Bancorp Capital Trust I Securities Due in 2034 [Member] | LIBOR [Member]
Debt Instrument [Line Items]
Basis spread on variable rate	2.44%
Junior Subordinated Debentures [Member] | Central Bancorp Capital Trust II Securities Due in 2037 [Member]
Debt Instrument [Line Items]
Face Amount	$ 5.9
Fixed rate	7.015%
Junior Subordinated Debentures [Member] | Central Bancorp Capital Trust II Securities Due in 2037 [Member] | LIBOR [Member]
Debt Instrument [Line Items]
Basis spread on variable rate	1.65%
Subordinated Debt [Member] | Subordinated Debentures Due in October 2019 [Member] | LIBOR [Member]
Debt Instrument [Line Items]
Basis spread on variable rate	3.00%
Subordinated Debt [Member] | Subordinated Debentures Due in November 2019 [Member] [Domain]
Debt Instrument [Line Items]
Fixed rate	4.75%
Subordinated Debt [Member] | Subordinated Debentures Due in November 2019 [Member] [Domain] | LIBOR [Member]
Debt Instrument [Line Items]
Basis spread on variable rate	2.98%

BORROWINGS (Maturities of Long-

BORROWINGS (Maturities of Long-Term Debt) (Details) $ in Thousands	Dec. 31, 2015USD ($)
Junior Subordinated Debentures [Member] | Capital Trust V Preferred Securities Due in 2037 [Member]
Long-term Debt, Fiscal Year Maturity [Abstract]
2,015	$ 0
2,016	0
2,017	0
2,018	0
2,019	0
Thereafter	51,547
Total	51,547
Junior Subordinated Debentures [Member] | Slades Ferry Trust I Preferred Securities Due in 2034 [Member]
Long-term Debt, Fiscal Year Maturity [Abstract]
2,015	0
2,016	0
2,017	0
2,018	0
2,019	0
Thereafter	10,310
Total	10,310
Junior Subordinated Debentures [Member] | Central Bancorp Capital Trust I Securities Due in 2034 [Member]
Long-term Debt, Fiscal Year Maturity [Abstract]
2,015	0
2,016	0
2,017	0
2,018	0
2,019	0
Thereafter	5,258
Total	5,258
Junior Subordinated Debentures [Member] | Central Bancorp Capital Trust II Securities Due in 2037 [Member]
Long-term Debt, Fiscal Year Maturity [Abstract]
2,015	0
2,016	0
2,017	0
2,018	0
2,019	0
Thereafter	6,349
Total	6,349
Subordinated Debentures [Member] | Subordinated Debentures Due August 27, 2018 [Member]
Long-term Debt, Fiscal Year Maturity [Abstract]
2,015	0
2,016	0
2,017	0
2,018	0
2,019	0
Thereafter	35,000
Total	$ 35,000

BORROWINGS (Details Textual)

BORROWINGS (Details Textual) - USD ($)	3 Months Ended								12 Months Ended
	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Debt Instrument [Line Items]
Repayments of Subordinated Debt									$ 30,000,000	$ (35,000,000)	$ 0
Subordinated Debt	$ 35,000,000				$ 65,000,000				35,000,000	65,000,000
Customer Repurchase Agreements	134,000,000				147,900,000				134,000,000	147,900,000
Interest Expense, Long-term Debt									6,600,000	6,400,000	7,000,000
Gains (Losses) on Extinguishment of Debt	0	$ 0	$ 0	$ (122,000)	0	$ 0	$ 0	$ 0	0	0	763,000
Loans Pledged as Collateral	1,400,000,000				1,300,000,000				1,400,000,000	1,300,000,000
Loss on termination of derivatives	0	$ 0	$ 0	$ 0	0	$ 0	$ 1,122,000	$ 0		1,100,000
Repayments of Federal Home Loan Bank Borrowings									60,000,000
Interest expense on short-term borrowings									210,000	200,000	$ 276,000
Total Long-Term Borrowings	$ 108,464,000				188,685,000				$ 108,464,000	188,685,000
Assets Sold under Agreements to Repurchase, Interest Rate	2.32%								2.32%
Wholesale Repurchase Agreements [Member]
Debt Instrument [Line Items]
Pledged Assets Separately Reported, Securities Pledged for Repurchase Agreements, at Fair Value					52,900,000					52,900,000
Total Long-Term Borrowings					50,000,000					50,000,000
Parent Company [Member]
Debt Instrument [Line Items]
Subordinated Debt	$ 35,000,000				35,000,000				$ 35,000,000	35,000,000
Subordinated Debentures Due in October 2019 [Member] | Subordinated Debentures [Member] | LIBOR [Member]
Debt Instrument [Line Items]
Basis spread on variable rate									3.00%
Subordinated Debentures Due in November 2019 [Member] [Domain] | Subordinated Debentures [Member]
Debt Instrument [Line Items]
Fixed rate	4.75%								4.75%
Subordinated Debentures Due in November 2019 [Member] [Domain] | Subordinated Debentures [Member] | LIBOR [Member]
Debt Instrument [Line Items]
Basis spread on variable rate									2.98%
Line of Credit [Member] | Line of Credit Borrowing After 2013 Amendment [Member]
Debt Instrument [Line Items]
Line of credit maximum borrowing capacity	$ 20,000,000								$ 20,000,000
Line of Credit [Member] | Line of Credit Borrowing Before 2013 Amendment [Member]
Debt Instrument [Line Items]
Line of credit maximum borrowing capacity					10,000,000					10,000,000
Federal Home Loan Bank Advances [Member]
Debt Instrument [Line Items]
Federal home loan bank unused remaining available borrowing capacity	777,500,000				755,700,000				777,500,000	755,700,000
Line of credit maximum borrowing capacity	5,000,000								5,000,000
Swap [Member] | Federal Home Loan Bank Advances [Member]
Debt Instrument [Line Items]
FHLB advances amount hedged	$ 25,000,000				$ 25,000,000				$ 25,000,000	$ 25,000,000
Derivative weighted average interest rate	2.94%				2.94%				2.94%	2.94%
Swap [Member] | Federal Home Loan Bank Advances Terminated [Member]
Debt Instrument [Line Items]
FHLB advances amount hedged					$ 75,000,000					$ 75,000,000

EARNINGS PER SHARE (Details)

EARNINGS PER SHARE (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Earnings Per Share [Abstract]
Net income	$ 19,455	$ 18,594	$ 17,451	$ 9,460	$ 15,978	$ 15,738	$ 14,746	$ 13,383	$ 64,960	$ 59,845	$ 50,254
Weighted Average Shares (in shares)
Basic Shares (in shares)	26,238,004	26,200,621	26,149,593	24,959,865	23,968,320	23,911,678	23,897,413	23,819,065	25,891,382	23,899,562	23,011,814
Effect of dilutive securities (in shares)	52,772	63,493	71,819	80,215	86,812	90,685	94,560	100,173	68,566	93,815	76,764
Weighted average common shares (diluted) (in shares)	26,290,776	26,264,114	26,221,412	25,040,080	24,055,132	24,002,363	23,991,973	23,919,238	25,959,948	23,993,377	23,088,578
Net Income Available to Common Shareholders per Share (in dollars per share)
Basic EPS (in dollars per share)	$ 0.74	$ 0.71	$ 0.67	$ 0.38	$ 0.67	$ 0.66	$ 0.62	$ 0.56	$ 2.51	$ 2.50	$ 2.18
Effect of Dilutive Securities (in dollars per share)									(0.01)	(0.01)
Diluted EPS (in dollars per share)	$ 0.74	$ 0.71	$ 0.67	$ 0.38	$ 0.66	$ 0.66	$ 0.61	$ 0.56	$ 2.50	$ 2.49	$ 2.18

EARNINGS PER SHARE (Details 1)

EARNINGS PER SHARE (Details 1) - shares	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Performance Shares [Member]
Details of anti dilutive options to purchase common stock
Stock options	0	0
Performance-based Restricted Shares [Member]
Details of anti dilutive options to purchase common stock
Stock options			0
Stock options [Member]
Details of anti dilutive options to purchase common stock
Stock options	0	0
Stock Options or Restricted Stock [Member]
Details of anti dilutive options to purchase common stock
Stock options			124,608

CUMULATIVELY GRANTED AWARDS (De

CUMULATIVELY GRANTED AWARDS (Details)	Dec. 31, 2015shares
2005 Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Authorized Stock Awards	1,650,000	[1]
Cumulative Granted, Net of Forfeitures	1,131,238
Authorized but Unissued	518,762
2005 Plan [Member] | Stock options [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Cumulative Granted, Net of Forfeitures	537,941
2005 Plan [Member] | Restricted stock awards [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Cumulative Granted, Net of Forfeitures	593,297
2010 Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Authorized Stock Awards	314,600	[2]
Cumulative Granted, Net of Forfeitures	103,820
Authorized but Unissued	210,780
2010 Plan [Member] | Stock options [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Cumulative Granted, Net of Forfeitures	27,000
2010 Plan [Member] | Restricted stock awards [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Cumulative Granted, Net of Forfeitures	76,820
[1]	The Company may award up to a total of 1,650,000 shares as stock options or restricted stock awards.
[2]	The Company may award up to a total of 314,600 shares as stock options or restricted stock awards, inclusive of 14,600 shares which were transferred from the previous 2006 Nonemployee Director Stock Plan.

PRE TAX EXPENSE (Details 1)

PRE TAX EXPENSE (Details 1) - USD ($) $ in Thousands		12 Months Ended
		Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total stock based award expense		$ 2,489	$ 2,712	$ 2,462
Related tax benefits recognized in earnings		1,122	945	832
Stock options [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total stock based award expense		0	36	241
Stock options [Member] | Director [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total stock based award expense		0	14	27
Restricted stock awards [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total stock based award expense	[1]	2,295	2,135	1,906
Restricted stock awards [Member] | Director [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total stock based award expense		$ 194	$ 527	$ 288
[1]	Inclusive of compensation expense associated with time-vested and performance-based restricted stock awards.

STOCK OPTION AWARDS DURING PERI

STOCK OPTION AWARDS DURING PERIOD (Details 3) - Stock options [Member] - $ / shares		12 Months Ended
		Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares granted		0
Weighted average grant date fair value of options granted (per share)		$ 0	$ 0	$ 8.13
11/9/2013 | 2010 Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares granted				5,000
Vesting period	[1]			13 months
Investment Options, Expiration Date				Nov. 9, 2023
Expected volatility				31.23%
Expected life (years)				5 years 6 months
Expected dividend yield				2.64%
Risk free interest rate				1.56%
Weighted average grant date fair value of options granted (per share)				$ 8.13
[1]	Vesting periods begin on the grant date.

RELEVANT STOCK OPTION INFORMATI

RELEVANT STOCK OPTION INFORMATION (Details 4) - Stock options [Member] - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Fair value of stock options vested based on grant date fair value	$ 14	$ 211	$ 430
Intrinsic value of stock options exercised	3,362	1,210	1,051
Cash received from stock option exercises	6,105	6,285	2,475
Tax benefit realized on stock option exercises/repurchase	$ 1,362	$ 442	$ 322
Weighted average grant date fair value of options granted (per share)	$ 0	$ 0	$ 8.13

STOCK OPTION ROLLFORWARD (Detai

STOCK OPTION ROLLFORWARD (Details 5) - Stock options [Member] - USD ($) $ / shares in Units, $ in Thousands		12 Months Ended
		Dec. 31, 2015		Dec. 31, 2014	Dec. 31, 2013
Stock Option Awards, Outstanding (in shares):
Balance outstanding at beginning of period		330,751
Granted		0
Exercised		(205,516)
Forfeited		0
Expired		(3,335)
Balance outstanding at end of period		121,900	[1]	330,751
Options outstanding and expected to vest at December 31, 2015	[1]	121,900
Options exercisable at December 31, 2015	[1]	121,900
Weighted Average Exercise Price, Outstanding (in usd per share):
Balance outstanding at beginning of period		$ 29.36
Granted		0
Exercised		29.71
Forfeited		0
Expired		30.16
Balance outstanding at end of period		28.76		$ 29.36
Options outstanding and expected to vest at December 31, 2015		28.76
Options exercisable at December 31, 2015		$ 28.76
Balance at December 31, 2013, Weighted average remaining contractual term (years)		3 years 1 month 8 days
Options outstanding and expected to vest at December 31, 2013, Weighted Average Remaining Contractual Term (years)		3 years 1 month 8 days
Options exercisable at December 31, 2013, Weighted Average Remaining Contractual Term (years)		3 years 1 month 8 days
Balance at December 31, 2013, Aggregate Intrinsic Value	[2]	$ 2,216
Options outstanding and expected to vest at December 31, 2013, Aggregate Instrinsic Value	[2]	2,216
Options exercisable at December 31, 2013, Aggregate Intrinsic Value	[2]	$ 2,216
Stock Option Awards, Nonvested (in shares)
Balance nonvested at beginning of period		1,666
Granted		0
Vested		(1,666)
Forfeited		0
Expired		0
Balance nonvested at end of period		0		1,666
Weighted Average Grant Date Fair Value, Nonvested (in dollars per share):
Balance nonvested at beginning of period		$ 8.13
Granted		0		$ 0	$ 8.13
Vested		8.13
Forfeited		0
Expired		0
Balance nonvested at end of period		$ 0		$ 8.13
Unrecognized compensation cost, including forfeiture estimate		$ 0
Weighted average remaining recognition period (years)		0 years
[1]	Inclusive of 24,000 stock options outstanding and expected to vest to Directors.
[2]	The aggregate intrinsic value in the preceding tables represents the total pre-tax intrinsic value, based on the average of the high price and low price at which the Company’s common stock traded on December 31, 2015 of $46.94, which would have been received by the option holders had they all exercised their options as of that date.

RSA GRANTS (Details 6)

RSA GRANTS (Details 6) - $ / shares		12 Months Ended
		Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Non Employee Director Stock Plan Member | 5/20/2014 | At The End of Period [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares granted			10,920
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value	[1]		$ 35.08
Vesting terms	[2]		At the end of 5 years from grant date (2)
Restricted stock awards [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value		$ 40.71
Restricted stock awards [Member] | Employee Stock Plan [Member] | 2/11/2015 | Ratably Over Period [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares granted		31,500
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value	[1]	$ 39.42
Vesting terms		Ratably over 5 years from grant date
Restricted stock awards [Member] | Employee Stock Plan [Member] | 2/12/2015 | Ratably Over Period [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares granted		25,910
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value	[1]	$ 40.03
Vesting terms		Ratably over 5 years from grant date
Restricted stock awards [Member] | Employee Stock Plan [Member] | 3/19/2015 | Ratably Over Period [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares granted		3,800
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value	[1]	$ 43.56
Vesting terms		Ratably over 5 years from grant date
Restricted stock awards [Member] | Employee Stock Plan [Member] | 4/27/2015 | At The End of Period [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares granted		625
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value	[1]	$ 41.61
Vesting terms		At the end of 3 years from grant date
Restricted stock awards [Member] | Employee Stock Plan [Member] | 4/27/2015 | At The End of Period [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares granted		1,875
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value	[1]	$ 41.61
Vesting terms		At the end of 5 years from grant date
Restricted stock awards [Member] | Employee Stock Plan [Member] | 10/13/2015 | Ratably Over Period [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares granted		1,000
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value	[1]	$ 46.09
Vesting terms		Ratably over 5 years from grant date
Restricted stock awards [Member] | Employee Stock Plan [Member] | 10/20/2015 | Ratably Over Period [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares granted		2,000
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value	[1]	$ 46.47
Vesting terms		Ratably over 5 years from grant date
Restricted stock awards [Member] | Employee Stock Plan [Member] | 3/20/2014 | Ratably Over Period [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares granted			65,950
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value	[1]		$ 39.82
Vesting terms			Ratably over 5 years from grant date
Restricted stock awards [Member] | Employee Stock Plan [Member] | 3/31/2014 | Ratably Over Period [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares granted			3,000
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value	[1]		$ 39
Vesting terms			Ratably over 3 years from grant date
Restricted stock awards [Member] | Employee Stock Plan [Member] | 11/20/2014 | Ratably Over Period [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares granted			2,000
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value	[1]		$ 39.11
Vesting terms			Ratably over 5 years from grant date
Restricted stock awards [Member] | Employee Stock Plan [Member] | 12/11/2014 | Ratably Over Period [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares granted			2,000
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value	[1]		$ 40.89
Vesting terms			Ratably over 5 years from grant date
Restricted stock awards [Member] | Employee Stock Plan [Member] | 1/16/2013 | Ratably Over Period [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares granted				2,000
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value	[1]			$ 30.48
Vesting terms				Ratably over 3 years from grant date
Restricted stock awards [Member] | Employee Stock Plan [Member] | 2/14/2013 | Ratably Over Period [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares granted				93,800
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value	[1]			$ 31.51
Vesting terms				Ratably over 5 years from grant date
Restricted stock awards [Member] | Non Employee Director Stock Plan Member | 5/27/2015 | At The End of Period [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares granted		8,800
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value	[1]	$ 45.02
Vesting terms	[2]	At the end of 5 years from grant date (2)
Restricted stock awards [Member] | Non Employee Director Stock Plan Member | 7/14/2015 | At The End of Period [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares granted		800
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value	[1]	$ 47.82
Vesting terms	[3]	Once on May 27, 2020 (3)
Restricted stock awards [Member] | Non Employee Director Stock Plan Member | 5/21/2013 | At The End of Period [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares granted				14,700
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value	[1]			$ 33.17
Vesting terms	[2]			At the end of 5 years from grant date (2)
Performance Shares [Member] | Employee Stock Plan [Member] | 2/12/2015 | At The End of Period [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares granted		21,780
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value	[1]	$ 40.03
Vesting terms		On February 12, 2018, if performance conditions are met
Performance Shares [Member] | Employee Stock Plan [Member] | 3/20/2014 | At The End of Period [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares granted			20,700
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value	[1]		$ 39.82
Vesting terms			On March 20, 2017, if performance conditions are met
[1]	The fair value of the restricted stock awards are based upon the average of the high and low prices at which the Company’s common stock traded on the date of grant. The holders of time-vested restricted stock awards participate fully in the rewards of stock ownership of the Company, including voting and dividend rights. The holders of performance-based restricted stock awards do not participate in the rewards of stock ownership of the Company until vested. The holders of all restricted stock awards are not required to pay any consideration to the Company for the awards.
[2]	These restricted stock grants will vest at the end of a five year period, or earlier if the director ceases to be a director for any reason other than cause, such as, for example, by retirement. If a non-employee director is removed from the Board for cause, the Company has ninety (90) days within which to exercise a right to repurchase any unvested portion of any restricted stock award from the non-employee director for the aggregate price of one dollar ($1.00).
[3]	These restricted stock grants will vest on May 27, 2020, or earlier if the director ceases to be a director for any reason other than cause, such as, for example, by retirement. If a non-employee director is removed from the Board for cause, the Company has ninety (90) days within which to exercise a right to repurchase any unvested portion of any restricted stock award from the non-employee director for the aggregate price of one dollar ($1.00).

FV OF RSA VESTS (Details 7)

FV OF RSA VESTS (Details 7) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Restricted stock awards [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Fair value of restricted stock awards upon vesting	$ 2,610	$ 3,293	$ 3,289

RSA ROLLFORWARD (Details 8)

RSA ROLLFORWARD (Details 8) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2015USD ($)$ / sharesshares
Oustanding (in shares):
Beginning balance	254,500
Ending balance	230,900
Restricted stock awards [Member]
Oustanding (in shares):
Beginning balance	276,527
Granted	98,090
Vested/Released	(63,437)
Forfeited	(46,236)
Ending balance	264,944	[1]
Weighted Average Grant Price (in usd per share):
Beginning balance | $ / shares	$ 33.15
Granted | $ / shares	40.71
Vested/Released | $ / shares	31.47
Forfeited | $ / shares	35.02
Ending balance | $ / shares	$ 36.03
Unrecognized compensation cost (inclusive of directors’ fees), including forfeiture estimate | $	$ 6,351
Weighted average remaining recognition period (years)	2 years 11 months 19 days
[1]	Inclusive of 44,200 restricted stock awards outstanding to Directors.

STOCK BASED COMPENSATION (Detai

STOCK BASED COMPENSATION (Details Textual) - $ / shares		12 Months Ended
		Dec. 31, 2015		Dec. 31, 2014	Dec. 31, 2013
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number		230,900		254,500
Share Based Compensation Arrangement By Share Based Payment Award Options Price Per Share Common Stock Average High And Low Price Intrinsic Value		$ 46.94
Stock options [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options outstanding and expected to vest at December 31, 2015	[1]	121,900
Annualized estimated forfeitures		4.50%		3.50%	3.50%
Options exercisable at December 31, 2015	[1]	121,900
Share-based Compensation Arrangement by Share-based Payment Award, Options, Nonvested, Number of Shares		0		1,666
Weighted average remaining recognition period (years)		0 years
Restricted Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number		264,944	[2]	276,527
Weighted average remaining recognition period (years)		2 years 11 months 19 days
Director [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options outstanding and expected to vest at December 31, 2015		24,000
Director [Member] | Restricted Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number		44,200
Two Thousand Five Amended and Restated Employee Stock Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized	[3]	1,650,000
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant		518,762
Two Thousand Five Amended and Restated Employee Stock Plan [Member] | Stock Options or Restricted Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized		1,650,000
Two Thousand Six Nonemployee Director Stock Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized Transferred From (To) Another Plan		14,600
Two Thousand Ten Nonemployee Director Stock Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized	[4]	314,600
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant		210,780
Two Thousand Ten Nonemployee Director Stock Plan [Member] | Stock Options or Restricted Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized		314,600
Two Thousand Ten Nonemployee Director Stock Plan [Member] | Maximum [Member] | Restricted Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period		5 years
[1]	Inclusive of 24,000 stock options outstanding and expected to vest to Directors.
[2]	Inclusive of 44,200 restricted stock awards outstanding to Directors.
[3]	The Company may award up to a total of 1,650,000 shares as stock options or restricted stock awards.
[4]	The Company may award up to a total of 314,600 shares as stock options or restricted stock awards, inclusive of 14,600 shares which were transferred from the previous 2006 Nonemployee Director Stock Plan.

Derivatives and Hedging Acti105

Derivatives and Hedging Activities (Derivative Positions for Interest Rate Swaps which Qualify as Hedges) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Details of derivative positions for interest rate swaps which qualify as hedges for accounting purposes
Notional Amount	$ 75,000	$ 75,000
Fair Value	(3,273)	(5,570)
Amortization Of Deferred Hedge Gains Losses	244	244	$ 244
Positions One [Member]
Details of derivative positions for interest rate swaps which qualify as hedges for accounting purposes
Notional Amount	$ 25,000	$ 25,000
Trade Date	Feb. 16, 2006	Feb. 16, 2006
Effective Date	Dec. 28, 2006	Dec. 28, 2006
Maturity Date	Dec. 28, 2016	Dec. 28, 2016
Receive (Variable) Index	3 Month LIBOR	3 Month LIBOR
Current Rate Received	0.51%	0.24%
Pay Fixed Swap Rate	5.04%	5.04%
Fair Value	$ (1,054)	$ (2,093)
Positions Two [Member]
Details of derivative positions for interest rate swaps which qualify as hedges for accounting purposes
Notional Amount	$ 25,000	$ 25,000
Trade Date	Feb. 16, 2006	Feb. 16, 2006
Effective Date	Dec. 28, 2006	Dec. 28, 2006
Maturity Date	Dec. 28, 2016	Dec. 28, 2016
Receive (Variable) Index	3 Month LIBOR	3 Month LIBOR
Current Rate Received	0.51%	0.24%
Pay Fixed Swap Rate	5.04%	5.04%
Fair Value	$ (1,055)	$ (2,094)
Positions Four [Member]
Details of derivative positions for interest rate swaps which qualify as hedges for accounting purposes
Notional Amount	$ 25,000	$ 25,000
Trade Date	Dec. 9, 2008	Dec. 9, 2008
Effective Date	Dec. 10, 2008	Dec. 10, 2008
Maturity Date	Dec. 10, 2013	Dec. 10, 2013
Receive (Variable) Index	3 Month LIBOR	3 Month LIBOR
Current Rate Received	0.49%	0.24%
Pay Fixed Swap Rate	2.94%	2.94%
Fair Value	$ (1,164)	$ (1,383)

Derivatives and Hedging Acti106

Derivatives and Hedging Activities (Customer Related Derivative Positions - Not Designated as Hedges) (Details) $ in Thousands	Dec. 31, 2015USD ($)position	Dec. 31, 2014USD ($)position
Summary of customer related derivative positions, not designated as hedging
Total	$ 75,000	$ 75,000
Fair Value	$ (3,273)	$ (5,570)
Not Designated as Hedging Instrument [Member] | Receive fixed, pay variable | Loan level derivatives
Summary of customer related derivative positions, not designated as hedging
Number of Positions (1) | position	171	174
Less than 1 year	$ 37,732	$ 88,147
Less than 2 years	34,424	46,854
Less than 3 years	29,629	40,958
Less than 4 years	77,041	38,108
Thereafter	488,110	403,208
Total	666,936	617,275
Fair Value	$ 22,467	$ 17,840
Not Designated as Hedging Instrument [Member] | Pay fixed, receive variable | Loan level derivatives
Summary of customer related derivative positions, not designated as hedging
Number of Positions (1) | position	165	168
Less than 1 year	$ 37,732	$ 88,147
Less than 2 years	34,424	46,854
Less than 3 years	29,629	40,958
Less than 4 years	77,041	38,108
Thereafter	488,110	403,208
Total	666,936	617,275
Fair Value	$ (22,462)	$ (17,837)
Not Designated as Hedging Instrument [Member] | Buys foreign currency, sells U.S. currency | Foreign exchange contracts
Summary of customer related derivative positions, not designated as hedging
Number of Positions (1) | position	21	23
Less than 1 year	$ 38,416	$ 57,112
Total	38,416	57,112
Fair Value	$ (354)	$ (3,984)
Not Designated as Hedging Instrument [Member] | Buys U.S. currency, sells foreign currency | Foreign exchange contracts
Summary of customer related derivative positions, not designated as hedging
Number of Positions (1) | position	21	23
Less than 1 year	$ 38,416	$ 57,112
Total	38,416	57,112
Fair Value	$ 382	$ 4,007

Derivatives and Hedging Acti107

Derivatives and Hedging Activities (FV of Derivative Financial Instruments and Classification on Balance Sheet) (Details) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Fair value of derivative financial instruments as well as their classification on the balance sheet
Total	$ 23,072	$ 22,390
Total	160,270	225,824
Other Assets [Member]
Fair value of derivative financial instruments as well as their classification on the balance sheet
Derivative Instruments Not Designated as Hedging Instruments, Asset, at Fair Value	23,305	22,688
Total	23,305	22,688
Other Liabilities [Member]
Fair value of derivative financial instruments as well as their classification on the balance sheet
Derivative Instruments Not Designated as Hedging Instruments, Liability, at Fair Value	23,040	22,380
Total	26,313	27,950
Interest rate derivatives
Fair value of derivative financial instruments as well as their classification on the balance sheet
Total	3,273	5,570
Interest rate derivatives | Derivatives designated as hedges: [Member] | Other Liabilities [Member]
Fair value of derivative financial instruments as well as their classification on the balance sheet
Interest rate derivatives	3,273	5,570
Loan level derivatives
Fair value of derivative financial instruments as well as their classification on the balance sheet
Total	22,470	18,383
Total	22,465	18,380
Loan level derivatives | Derivatives not designated as hedges: [Member] | Other Assets [Member]
Fair value of derivative financial instruments as well as their classification on the balance sheet
Loan level derivatives	22,470	18,383
Loan level derivatives | Derivatives not designated as hedges: [Member] | Other Liabilities [Member]
Fair value of derivative financial instruments as well as their classification on the balance sheet
Loan level derivatives	22,465	18,380
Foreign exchange contracts
Fair value of derivative financial instruments as well as their classification on the balance sheet
Total	602	4,007
Total	574	3,984
Foreign exchange contracts | Derivatives not designated as hedges: [Member] | Other Assets [Member]
Fair value of derivative financial instruments as well as their classification on the balance sheet
Foreign exchange contracts	602	4,007
Foreign exchange contracts | Derivatives not designated as hedges: [Member] | Other Liabilities [Member]
Fair value of derivative financial instruments as well as their classification on the balance sheet
Foreign exchange contracts	574	3,984
Mortgage Derivatives | Derivatives not designated as hedges: [Member] | Other Assets [Member]
Fair value of derivative financial instruments as well as their classification on the balance sheet
Interest rate lock commitments	233	295
Forward TBA mortgage contracts	0	0
Forward sales agreements	0	3
Mortgage Derivatives | Derivatives not designated as hedges: [Member] | Other Liabilities [Member]
Fair value of derivative financial instruments as well as their classification on the balance sheet
Interest rate lock commitments	0	0
Forward TBA mortgage contracts	0	16
Forward sales agreements	$ 1	$ 0

Derivatives and Hedging Acti108

Derivatives and Hedging Activities (Derivative Financial Instruments included in OCI and Current Earnings) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Derivative Instruments, Gain (Loss) [Line Items]
Gain in OCI on derivatives (effective portion), net of tax	$ (477)	$ (573)	$ 350
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI for Loss on Termination of Derivatives, before Tax		(1,122)
Derivatives designated as hedges: [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Gain in OCI on derivatives (effective portion), net of tax	1,199	2,256	3,735
Loss reclassified from OCI into noninterest expense (loss on termination)	(2,828)	(3,662)	(5,723)
Derivatives not designated as hedges: [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Other income	(43)	108	276
Other Expense [Member] | Derivatives not designated as hedges: [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Other income	(53)	(4)	(116)
Other Income [Member] | Derivatives not designated as hedges: [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Other income	60	63	38
Mortgage banking income | Derivatives not designated as hedges: [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Increase Decrease In Fair Value Of Unhedged Derivative Instruments Relating To Residential Loans	$ (50)	$ 49	$ 354

Derivatives and Hedging Acti109

Derivatives and Hedging Activities (Textual) (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Derivative [Line Items]
Change in fair value on loans held for sale									$ (22)	$ 18
Net amortization income									244	244	$ 244
Exposure to Institutional Counterparties	$ 2				$ 272				$ 2	272
Maximum length of time Company is currently hedging its exposure									3 years
Interest expense									$ 2,400
Customer related positions	23,200				18,900				23,200	18,900
Loss on termination of derivatives	$ 0	$ 0	$ 0	$ 0	$ 0	$ 0	$ 1,122	$ 0		1,100
Gain (Loss) on Sales of Loans, Net									$ 4,700	$ 3,000	$ 2,800

BALANCE SHEET OFFSETTING (Detai

BALANCE SHEET OFFSETTING (Details) - USD ($) $ in Thousands		Dec. 31, 2015		Dec. 31, 2014
Offsetting Liabilities [Line Items]
Total		$ 23,072		$ 22,390
Derivative Asset, Collateral, Obligation to Return Cash, Offset		0		0
Derivative Asset		23,072		22,390
Derivative, Collateral, Obligation to Return Securities	[1]	2		272
Derivative, Collateral, Obligation to Return Cash		0		0
Derivative Asset, Fair Value, Amount Offset Against Collateral		23,070		22,118
Total		160,270		225,824
Derivative Liability, Collateral, Right to Reclaim Cash, Offset		0		0
Derivative Liability		160,270		225,824
Derivative, Collateral, Right to Reclaim Securities	[1]	2		272
Derivative, Collateral, Right to Reclaim Cash		159,692		221,296
Derivative Liability, Fair Value, Amount Offset Against Collateral		576		4,256
Interest Rate Swap [Member]
Offsetting Liabilities [Line Items]
Total		3,273		5,570
Derivative Liability, Collateral, Right to Reclaim Cash, Offset		0		0
Derivative Liability		3,273		5,570
Derivative, Collateral, Right to Reclaim Securities	[1]	0		0
Derivative, Collateral, Right to Reclaim Cash		3,273		5,570
Derivative Liability, Fair Value, Amount Offset Against Collateral		0		0
Loan level derivatives
Offsetting Liabilities [Line Items]
Total		22,470		18,383
Derivative Asset, Collateral, Obligation to Return Cash, Offset		0		0
Derivative Asset		22,470		18,383
Derivative, Collateral, Obligation to Return Securities	[1]	2		272
Derivative, Collateral, Obligation to Return Cash		0		0
Derivative Asset, Fair Value, Amount Offset Against Collateral		22,468		18,111
Total		22,465		18,380
Derivative Liability, Collateral, Right to Reclaim Cash, Offset		0		0
Derivative Liability		22,465		18,380
Derivative, Collateral, Right to Reclaim Securities	[1]	2		272
Derivative, Collateral, Right to Reclaim Cash		22,461		17,836
Derivative Liability, Fair Value, Amount Offset Against Collateral		2		272
Foreign Exchange Contract [Member]
Offsetting Liabilities [Line Items]
Total		602		4,007
Derivative Asset, Collateral, Obligation to Return Cash, Offset		0		0
Derivative Asset		602		4,007
Derivative, Collateral, Obligation to Return Securities	[1]	0		0
Derivative, Collateral, Obligation to Return Cash		0		0
Derivative Asset, Fair Value, Amount Offset Against Collateral		602		4,007
Total		574		3,984
Derivative Liability, Collateral, Right to Reclaim Cash, Offset		0		0
Derivative Liability		574		3,984
Derivative, Collateral, Right to Reclaim Securities		0	[1]	0
Derivative, Collateral, Right to Reclaim Cash		0		0
Derivative Liability, Fair Value, Amount Offset Against Collateral		574		3,984
Customer Repurchase Agreements [Member]
Offsetting Liabilities [Line Items]
Total		133,958		147,890
Derivative Liability, Collateral, Right to Reclaim Cash, Offset		0		0
Derivative Liability		133,958		147,890
Derivative, Collateral, Right to Reclaim Securities	[1]	0		0
Derivative, Collateral, Right to Reclaim Cash		133,958		147,890
Derivative Liability, Fair Value, Amount Offset Against Collateral		$ 0		0
Wholesale Repurchase Agreements [Member]
Offsetting Liabilities [Line Items]
Total				50,000
Derivative Liability, Collateral, Right to Reclaim Cash, Offset				0
Derivative Liability				50,000
Derivative, Collateral, Right to Reclaim Securities	[1]			0
Derivative, Collateral, Right to Reclaim Cash				50,000
Derivative Liability, Fair Value, Amount Offset Against Collateral				$ 0
[1]	(1)Reflects offsetting derivative positions with the same counterparty.

INCOME TAXES (Details)

INCOME TAXES (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Current expense
Federal									$ 11,946	$ 14,709	$ 9,570
State									5,052	6,350	4,357
Total current expense									16,998	21,059	13,927
Deferred expense (benefit)
Federal									8,466	2,877	1,598
State									1,754	(37)	959
Total deferred expense (benefit)									10,220	2,840	2,557
Total expense	$ 8,268	$ 7,867	$ 7,213	$ 3,869	$ 6,201	$ 6,415	$ 5,934	$ 5,350	$ 27,218	$ 23,899	$ 16,484

INCOME TAXES (Details 1)

INCOME TAXES (Details 1) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Income Tax Expense (Benefit), Continuing Operations, Income Tax Reconciliation [Abstract]
Computed statutory federal income tax provision									$ 32,262	$ 29,310	$ 23,359
State taxes, net of federal tax benefit									4,500	4,104	3,455
Nontaxable interest, net									(973)	(795)	(557)
New Markets Tax Credits									(6,514)	(6,708)	(9,000)
Low Income Housing Project Investments									(1,182)	(594)	(194)
Increase in cash surrender value of life insurance and tax exempt gain on benefit payments									(1,292)	(1,782)	(1,209)
Merger and other related costs (non-deductible)									185	274	366
Other, net									191	90	264
Total expense	$ 8,268	$ 7,867	$ 7,213	$ 3,869	$ 6,201	$ 6,415	$ 5,934	$ 5,350	$ 27,218	$ 23,899	$ 16,484
Effective Income Tax Rate, Continuing Operations, Tax Rate Reconciliation [Abstract]
Computed statutory federal income tax provision									35.00%	35.00%	35.00%
State taxes, net of federal tax benefit									4.88%	4.90%	5.17%
Nontaxable interest, net									(1.06%)	(0.95%)	(0.83%)
New Markets Tax Credits									(7.07%)	(8.01%)	(13.48%)
Low Income Housing Project Investments									(1.28%)	(0.71%)	(0.29%)
Increase in cash surrender value of life insurance and tax exempt gain on benefit payments									(1.40%)	(2.13%)	(1.81%)
Merger and other related costs (non-deductible)									0.20%	0.33%	0.55%
Other, net									0.22%	0.11%	0.39%
Total expense									29.53%	28.54%	24.70%
Effective Income Tax Rate Reconciliation, Change in Deferred Tax Assets Valuation Allowance, Amount									$ 41	$ 0	$ 0
Effective Income Tax Rate Reconciliation, Change in Deferred Tax Assets Valuation Allowance, Percent									0.04%	0.00%	0.00%

INCOME TAXES (Details 2)

INCOME TAXES (Details 2) - USD ($)	Dec. 31, 2015	Dec. 31, 2014
Deferred tax assets
Accrued expenses not deducted for tax purposes	$ 14,621,000	$ 10,997,000
Allowance for loan losses	22,744,000	22,462,000
Deferred gain on sale leaseback transaction	2,158,000	2,579,000
Derivatives fair value adjustment	1,033,000	1,882,000
Employee and director equity compensation	2,466,000	2,380,000
Federal Home Loan Bank borrowings fair value adjustment	108,000	83,000
Loan basis difference fair value adjustment	3,789,000	2,094,000
Net operating loss carry-forward	41,000	213,000
New Markets Tax Credit carry-forward	459,000	521,000
Other-than-temporary impairment on securities	0	4,072,000
Other	451,000	2,141,000
Gross deferred tax assets	47,870,000	49,424,000
Operating Loss Carryforwards, Valuation Allowance	(41,000)	0
Deferred Tax Assets, Net of Valuation Allowance	47,829,000	49,424,000
Deferred tax liabilities
Core deposit and other intangibles	3,785,000	3,194,000
Deferred loan fees, net	4,872,000	4,164,000
Fixed assets	7,269,000	4,875,000
Goodwill	14,576,000	14,194,000
Net unrealized gain on securities available for sale	805,000	2,074,000
Other	2,468,000	2,210,000
Total	33,775,000	30,711,000
Total net deferred tax asset	$ 14,054,000	$ 18,713,000

INCOME TAXES (Details 3)

INCOME TAXES (Details 3) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014
Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns [Roll Forward]
Beginning Balance	$ 0	$ 55
Reduction of tax positions for prior years	0	(55)
Increase for prior year tax positions	0	0
Increase for current year tax positions	81	0
Ending Balance	$ 81	$ 0

INCOME TAXES (Details Textual)

INCOME TAXES (Details Textual) - USD ($)	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Income Tax Disclosure [Abstract]
Operating Loss Carryforwards, Valuation Allowance	$ 41,000	$ 0
Computed statutory federal income tax provision	35.00%	35.00%	35.00%
Tax Credit Carryforward, Amount	$ 459,000

LOW INCOME HOUSING PROJECT I116

LOW INCOME HOUSING PROJECT INVESTMENTS Low Income Housing Project Investments (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014
Low Income Housing Project Investments [Abstract]
Original Investment in Low Income Housing Projects	$ 42,199	$ 40,541
Amortization Method Qualified Affordable Housing Project Investments, Amortization	2,450	1,089
Income (Loss) from Affordable Housing Projects, Equity Method Investments	1,182	594
Amortization Method Qualified Affordable Housing Project Investments	38,151	38,943
Qualified Affordable Housing Project Investments, Commitment	14,607	28,004
Affordable Housing Tax Credits and Other Tax Benefits, Amount	$ 3,632	$ 1,683

EMPLOYEE BENEFIT PLANS (Details

EMPLOYEE BENEFIT PLANS (Details) - USD ($)	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014
Pension Plan [Member]
Multiemployer Plans [Line Items]
Multiemployer Plans, Funded Status	At least 80 percent	At least 80 percent
FIP/RP Status Pending/Implemented	No
Surcharge Imposed	No
Expiration Date of Collective-Bargaining Agreement	N/A
Minimum Contributions Required for Future Periods	$ 0
Pension Plan [Member] | Pentegra Defined Benefit Plan for Financial Institutions [Member]
Multiemployer Plans [Line Items]
Entity Tax Identification Number	135,645,888
Pension Plan Number	333
Minimum [Member]
Multiemployer Plans [Line Items]
Discount rate used for benefit obligation	2.49%	2.24%
Discount rate used for net periodic benefit cost	2.24%	2.43%
Maximum [Member]
Multiemployer Plans [Line Items]
Discount rate used for benefit obligation	4.16%	3.84%
Discount rate used for net periodic benefit cost	3.84%	4.76%

EMPLOYEE BENEFIT PLANS (Deta118

EMPLOYEE BENEFIT PLANS (Details 1) - Pension Plan [Member] - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Multiemployer Plans [Line Items]
Cash payment	$ 2,983	$ 1,320	$ 2,603
2015-2016
Multiemployer Plans [Line Items]
Cash payment	$ 2,983
2014-2015
Multiemployer Plans [Line Items]
Cash payment		$ 1,320
2013-2014
Multiemployer Plans [Line Items]
Cash payment			1,762
2012-2013
Multiemployer Plans [Line Items]
Cash payment			$ 841

EMPLOYEE BENEFIT PLANS (Deta119

EMPLOYEE BENEFIT PLANS (Details 2) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Retirement expense	$ 1,600	$ 1,500	$ 1,400
Supplemental Executive Retirement Plans [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Retirement expense	1,834	954	1,049
Contributions paid	$ 276	$ 271	$ 253

EMPLOYEE BENEFIT PLANS (Deta120

EMPLOYEE BENEFIT PLANS (Details 3) - Supplemental Executive Retirement Plans [Member] $ in Thousands	Dec. 31, 2015USD ($)
Defined Benefit Plan Disclosure [Line Items]
2,016	$ 431
2,017	425
2,018	460
2,019	509
2,020	500
2021-2025	$ 4,348

EMPLOYEE BENEFIT PLANS (Deta121

EMPLOYEE BENEFIT PLANS (Details 4) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Change in plan assets
Fair value of plan assets at beginning of year	$ 8,400
Fair value of plan assets at end of year	10,000	$ 8,400
Supplemental Executive Retirement Plans [Member]
Change in accumulated benefit obligation
Benefit obligation at beginning of year	12,537	8,243	$ 8,714
Accumulated service cost	742	397	429
Interest cost	470	390	409
Plan amendment		1,357
Actuarial loss/(gain)	(183)	2,421	(1,056)
Accumulated benefit obligation at end of year	13,290	12,537	8,243
Change in plan assets
Employer contribution	276	271	253
Benefits paid	(276)	(271)	(253)
Funded status at end of year	(13,290)	(12,537)	(8,243)
Assets	0	0	0
Liabilities	(13,290)	(12,537)	(8,243)
Accrued benefit cost	(13,290)	(12,537)	(8,243)
Amounts recognized in accumulated other comprehensive income (“AOCI”)
Pension and Other Postretirement Benefit Plans, Accumulated Other Comprehensive Income (Loss), Net Gains (Losses), before Tax	2,859	3,305	938
Pension and Other Postretirement Benefit Plans, Accumulated Other Comprehensive Income (Loss), Net Prior Service Cost (Credit), before Tax	1,599	1,904	659
Pension and Other Postretirement Benefit Plans, Accumulated Other Comprehensive Income (Loss), before Tax	4,458	5,209	1,597
Information for plans with an accumulated benefit obligation in excess of plan assets
Projected benefit obligation	13,290	12,537	8,243
Accumulated benefit obligation	13,290	12,537	8,243
Net periodic benefit cost
Service cost	742	397	429
Interest cost	470	390	409
Amortization of prior service cost	305	113	113
Recognized net actuarial loss	317	54	155
Net periodic benefit cost	1,834	954	1,106
Amounts in accumulated other comprehensive income expected to be recognized in net periodic benefit cost over next fiscal year
Net actuarial loss	270	309	18
Net prior service cost	$ 276	$ 947	$ 113
Discount rate used for benefit obligation			4.95%
Discount rate used for net periodic benefit cost			4.05%
Minimum [Member]
Amounts in accumulated other comprehensive income expected to be recognized in net periodic benefit cost over next fiscal year
Discount rate used for benefit obligation	2.49%	2.24%
Discount rate used for net periodic benefit cost	2.24%	2.43%
Maximum [Member]
Amounts in accumulated other comprehensive income expected to be recognized in net periodic benefit cost over next fiscal year
Discount rate used for benefit obligation	4.16%	3.84%
Discount rate used for net periodic benefit cost	3.84%	4.76%

EMPLOYEE BENEFIT PLANS (Deta122

EMPLOYEE BENEFIT PLANS (Details Textual)	12 Months Ended
	Dec. 31, 2015USD ($)ageshares	Dec. 31, 2014USD ($)shares	Dec. 31, 2013USD ($)
Defined Contribution Plan Disclosure [Line Items]
Incentive plans and discretionary bonus expense	$ 10,300,000	$ 8,500,000	$ 8,500,000
Employer matching contribution percent	25.00%
Employee contribution percent	6.00%
Nondiscretionary requisite service period	1 year
Defined Contribution Plan, Nondiscretionary Requisite service hours	1,000
Nondiscretionary employer contribution, percent up to social security limit	5.00%
Nondiscretionary employer contribution, percent over social security limit	10.00%
Multiemployer Plans [Abstract]
Significance of contributions percentage	5.00%
Defined benefit plan expense	$ 1,600,000	1,500,000	1,400,000
Postretirement Benefits [Abstract]
Retirement age | age	65
Service period to be eligible for postretirement benefit	10 years
Death benefit	$ 5,000
Supplemental Executive Retirement Plans [Abstract]
Plan assets	10,000,000	8,400,000
Deferred Compensation Arrangements [Abstract]
Deferred Compensation Arrangement with Individual, Employer Contribution	149,000	$ 135,000	107,000
Deferred compensation expense	$ 35,000
Deferred compensation, shares provided for the plan (in shares) | shares	172,580	176,849
Deferred compensation, recorded liability	$ 3,900,000	$ 3,700,000
401(k) Restoration Plan [Member]
Defined Contribution Plan Disclosure [Line Items]
Defined contribution plan expense	232,000	56,000
Employee Savings Plan [Member]
Defined Contribution Plan Disclosure [Line Items]
Defined contribution plan expense	4,500,000	$ 4,200,000	$ 3,900,000
Executive Vice President [Member]
Defined Contribution Plan Disclosure [Line Items]
Supplemental Unemployment Benefit, Salary Continuation Expense	222,000
Officer [Member]
Defined Contribution Plan Disclosure [Line Items]
Supplemental Unemployment Benefit, Salary Continuation Expense	$ 11,000

FAIR VALUE MEASUREMENTS (Detail

FAIR VALUE MEASUREMENTS (Details) - USD ($)	Dec. 31, 2015	Dec. 31, 2014
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading Securities	$ 356,000	$ 0
Assets
Securities - available for sale	367,249,000	348,554,000
Disposal Group, Including Discontinued Operation, Mortgage Loans	5,990,000	6,888,000
Total	23,072,000	22,390,000
Fair Value, Measurements, Recurring [Member]
Liabilities
Total recurring fair value measurements	370,587,000	350,180,000
Fair Value, Measurements, Recurring [Member] | Trading securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading Securities	356,000
Fair Value, Measurements, Recurring [Member] | U.S. Government agency securities
Assets
Securities - available for sale	30,215,000	41,486,000
Fair Value, Measurements, Recurring [Member] | Agency mortgage-backed securities
Assets
Securities - available for sale	210,937,000	217,678,000
Fair Value, Measurements, Recurring [Member] | Agency collateralized mortgage obligations
Assets
Securities - available for sale	63,584,000	63,035,000
Fair Value, Measurements, Recurring [Member] | State, county, and municipal securities
Assets
Securities - available for sale	4,659,000	5,223,000
Fair Value, Measurements, Recurring [Member] | Single issuer trust preferred securities issued by banks and insurers
Assets
Securities - available for sale	2,792,000	2,909,000
Fair Value, Measurements, Recurring [Member] | Pooled trust preferred securities issued by banks and insurers
Assets
Securities - available for sale	1,572,000	6,321,000
Fair Value, Measurements, Recurring [Member] | Small Business Administration Pooled Securities [Member]
Assets
Securities - available for sale	40,449,000
Fair Value, Measurements, Recurring [Member] | Equity securities
Assets
Securities - available for sale	13,041,000	11,902,000
Fair Value, Measurements, Recurring [Member] | Loans held for sale
Assets
Disposal Group, Including Discontinued Operation, Mortgage Loans	5,990,000	6,888,000
Fair Value, Measurements, Recurring [Member] | Derivative instruments
Assets
Total	23,305,000	22,688,000
Fair Value, Measurements, Recurring [Member] | Derivative instruments
Liabilities
Liabilities	26,313,000	27,950,000
Fair Value, Measurements, Recurring [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]
Liabilities
Total recurring fair value measurements	13,397,000	11,902,000
Fair Value, Measurements, Recurring [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Trading securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading Securities	356,000
Fair Value, Measurements, Recurring [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | State, county, and municipal securities
Assets
Securities - available for sale		0
Fair Value, Measurements, Recurring [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Small Business Administration Pooled Securities [Member]
Assets
Securities - available for sale	0
Fair Value, Measurements, Recurring [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Equity securities
Assets
Securities - available for sale	13,041,000	11,902,000
Fair Value, Measurements, Recurring [Member] | Significant Other Observable Inputs (Level 2) [Member]
Liabilities
Total recurring fair value measurements	355,618,000	331,957,000
Fair Value, Measurements, Recurring [Member] | Significant Other Observable Inputs (Level 2) [Member] | U.S. Government agency securities
Assets
Securities - available for sale	30,215,000	41,486,000
Fair Value, Measurements, Recurring [Member] | Significant Other Observable Inputs (Level 2) [Member] | Agency mortgage-backed securities
Assets
Securities - available for sale	210,937,000	217,678,000
Fair Value, Measurements, Recurring [Member] | Significant Other Observable Inputs (Level 2) [Member] | Agency collateralized mortgage obligations
Assets
Securities - available for sale	63,584,000	63,035,000
Fair Value, Measurements, Recurring [Member] | Significant Other Observable Inputs (Level 2) [Member] | State, county, and municipal securities
Assets
Securities - available for sale	4,659,000	5,223,000
Fair Value, Measurements, Recurring [Member] | Significant Other Observable Inputs (Level 2) [Member] | Single issuer trust preferred securities issued by banks and insurers
Assets
Securities - available for sale	2,792,000	2,909,000
Fair Value, Measurements, Recurring [Member] | Significant Other Observable Inputs (Level 2) [Member] | Small Business Administration Pooled Securities [Member]
Assets
Securities - available for sale	40,449,000
Fair Value, Measurements, Recurring [Member] | Significant Other Observable Inputs (Level 2) [Member] | Loans held for sale
Assets
Securities - available for sale	5,990,000	6,888,000
Fair Value, Measurements, Recurring [Member] | Significant Other Observable Inputs (Level 2) [Member] | Derivative instruments
Assets
Total	23,305,000	22,688,000
Fair Value, Measurements, Recurring [Member] | Significant Other Observable Inputs (Level 2) [Member] | Derivative instruments
Liabilities
Liabilities	26,313,000	27,950,000
Fair Value, Measurements, Recurring [Member] | Significant Unobservable Inputs (Level 3) [Member]
Liabilities
Total recurring fair value measurements	$ 1,572,000	$ 6,321,000
Fair Value, Measurements, Recurring [Member] | Significant Unobservable Inputs (Level 3) [Member] | U.S. Government agency securities
Assets
Securities - available for sale
Fair Value, Measurements, Recurring [Member] | Significant Unobservable Inputs (Level 3) [Member] | State, county, and municipal securities
Assets
Securities - available for sale		$ 0
Fair Value, Measurements, Recurring [Member] | Significant Unobservable Inputs (Level 3) [Member] | Pooled trust preferred securities issued by banks and insurers
Assets
Securities - available for sale	$ 1,572,000	6,321,000
Fair Value, Measurements, Recurring [Member] | Significant Unobservable Inputs (Level 3) [Member] | Small Business Administration Pooled Securities [Member]
Assets
Securities - available for sale	0
Fair Value, Measurements, Nonrecurring [Member]
Assets
Assets And Liabilities Fair Value Disclosure Nonrecurring	6,757,000	15,939,000
Fair Value, Measurements, Nonrecurring [Member] | Collateral dependent impaired loans
Assets
Assets nonrecurring	4,598,000	8,196,000
Fair Value, Measurements, Nonrecurring [Member] | Other real estate owned and other foreclosed assets
Assets
Assets nonrecurring	2,159,000	7,743,000
Fair Value, Measurements, Nonrecurring [Member] | Significant Unobservable Inputs (Level 3) [Member]
Assets
Assets And Liabilities Fair Value Disclosure Nonrecurring	6,757,000	15,939,000
Fair Value, Measurements, Nonrecurring [Member] | Significant Unobservable Inputs (Level 3) [Member] | Collateral dependent impaired loans
Assets
Assets nonrecurring	4,598,000	8,196,000
Fair Value, Measurements, Nonrecurring [Member] | Significant Unobservable Inputs (Level 3) [Member] | Other real estate owned and other foreclosed assets
Assets
Assets nonrecurring	$ 2,159,000	$ 7,743,000

FAIR VALUE MEASUREMENTS (Det124

FAIR VALUE MEASUREMENTS (Details 1) - Fair Value, Inputs, Level 3 [Member] - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Reconciliation for all assets and liabilities measured at fair value on a recurring basis
Beginning Balance	$ 6,321	$ 3,841	$ 6,513
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Gain (Loss) Included in Earnings	0	0	0
Included in other comprehensive income	14	2,655	1,068
Sales	(4,679)	0	(2,695)
Settlements	(84)	(175)	(1,045)
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Transfers, Net	0	0	0
Ending Balance	1,572	6,321	3,841
Pooled Trust Preferred Securities [Member]
Reconciliation for all assets and liabilities measured at fair value on a recurring basis
Beginning Balance	6,321	3,841	2,981
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Gain (Loss) Included in Earnings	0	0	0
Included in other comprehensive income	14	2,655	1,132
Sales	(4,679)	0	0
Settlements	(84)	(175)	(272)
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Transfers, Net	0	0	0
Ending Balance	$ 1,572	6,321	3,841
Mortgage-backed Securities, Issued by Private Enterprises [Member]
Reconciliation for all assets and liabilities measured at fair value on a recurring basis
Beginning Balance		$ 0	3,532
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Gain (Loss) Included in Earnings			0
Included in other comprehensive income			(64)
Sales			(2,695)
Settlements			(773)
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Transfers, Net			0
Ending Balance			$ 0

FAIR VALUE MEASUREMENTS (Det125

FAIR VALUE MEASUREMENTS (Details 2) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014
Fair Value, Assets, Quantitative Information [Line Items]
Securities - available for sale	$ 367,249	$ 348,554
Weighted Average [Member] | Discounted cash flow methodology [Member] | Significant Unobservable Inputs (Level 3) [Member]
Fair Value, Assets, Quantitative Information [Line Items]
Cumulative Prepayment	2.70%	7.00%
Cumulative Default	15.10%	13.90%
Loss Given Default	94.20%	96.10%
Cure Given Default	62.30%	46.70%
Pooled Trust Preferred Securities [Member] | Significant Unobservable Inputs (Level 3) [Member]
Fair Value, Assets, Quantitative Information [Line Items]
Securities - available for sale	$ 1,572	$ 6,321
Pooled Trust Preferred Securities [Member] | Minimum [Member] | Discounted cash flow methodology [Member] | Significant Unobservable Inputs (Level 3) [Member]
Fair Value, Assets, Quantitative Information [Line Items]
Cumulative Prepayment	0.00%	0.00%
Cumulative Default	5.00%	3.00%
Loss Given Default	85.00%	85.00%
Cure Given Default	0.00%	0.00%
Pooled Trust Preferred Securities [Member] | Maximum [Member] | Discounted cash flow methodology [Member] | Significant Unobservable Inputs (Level 3) [Member]
Fair Value, Assets, Quantitative Information [Line Items]
Cumulative Prepayment	64.00%	75.00%
Cumulative Default	100.00%	100.00%
Loss Given Default	100.00%	100.00%
Cure Given Default	75.00%	75.00%
Impaired Loans [Member] | Significant Unobservable Inputs (Level 3) [Member]
Fair Value, Assets, Quantitative Information [Line Items]
Assets, Fair Value Disclosure, Recurring	$ 4,598	$ 8,196
Other real estate owned and other foreclosed assets | Significant Unobservable Inputs (Level 3) [Member]
Fair Value, Assets, Quantitative Information [Line Items]
Assets, Fair Value Disclosure, Recurring	$ 2,159	$ 7,743

FAIR VALUE MEASUREMENTS (Det126

FAIR VALUE MEASUREMENTS (Details 3) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Assets, Fair Value Disclosure [Abstract]
Held-to-maturity Securities	$ 477,507	$ 375,453
Loans and Leases Receivable, Net Amount	5,491,896	4,915,633
Securities held to maturity, fair value	478,749	379,699
Liabilities, Fair Value Disclosure [Abstract]
Advances from Federal Home Loan Banks	102,080	70,080
Customer Repurchase Agreements and other short-term borrowings	133,958	147,890
Wholesale Repurchase Agreements	0	50,000
Junior subordinated debentures	73,464	73,685
Subordinated Debt	35,000	65,000
Bank Time Deposits [Member]
Liabilities, Fair Value Disclosure [Abstract]
Financial Liabilities Book Value	684,830	649,620
Accrued Liabilities, Fair Value Disclosure	684,370	651,180
Federal Home Loan Bank Advances [Member]
Liabilities, Fair Value Disclosure [Abstract]
Advances from Federal Home Loan Banks	102,080	70,080
Accrued Liabilities, Fair Value Disclosure	102,396	70,208
Customer Repurchase Agreements [Member]
Liabilities, Fair Value Disclosure [Abstract]
Customer Repurchase Agreements and other short-term borrowings	133,958	147,890
Accrued Liabilities, Fair Value Disclosure	133,958	147,890
Wholesaled And Customer Repurchase Agreements [Member]
Liabilities, Fair Value Disclosure [Abstract]
Wholesale Repurchase Agreements		50,000
Accrued Liabilities, Fair Value Disclosure		50,510
Junior Subordinated Debt [Member]
Liabilities, Fair Value Disclosure [Abstract]
Junior subordinated debentures	73,464	73,685
Accrued Liabilities, Fair Value Disclosure	74,029	70,045
Subordinated Debt [Member]
Liabilities, Fair Value Disclosure [Abstract]
Subordinated Debt	35,000	65,000
Accrued Liabilities, Fair Value Disclosure	34,781	64,198
Significant Other Observable Inputs (Level 2) [Member] | Bank Time Deposits [Member]
Liabilities, Fair Value Disclosure [Abstract]
Accrued Liabilities, Fair Value Disclosure	684,370	651,180
Significant Other Observable Inputs (Level 2) [Member] | Federal Home Loan Bank Advances [Member]
Liabilities, Fair Value Disclosure [Abstract]
Accrued Liabilities, Fair Value Disclosure	102,396	70,208
Significant Other Observable Inputs (Level 2) [Member] | Junior Subordinated Debt [Member]
Liabilities, Fair Value Disclosure [Abstract]
Accrued Liabilities, Fair Value Disclosure	74,029	70,045
Significant Unobservable Inputs (Level 3) [Member] | Customer Repurchase Agreements [Member]
Liabilities, Fair Value Disclosure [Abstract]
Accrued Liabilities, Fair Value Disclosure	133,958	147,890
Significant Unobservable Inputs (Level 3) [Member] | Wholesaled And Customer Repurchase Agreements [Member]
Liabilities, Fair Value Disclosure [Abstract]
Accrued Liabilities, Fair Value Disclosure		50,510
Significant Unobservable Inputs (Level 3) [Member] | Subordinated Debt [Member]
Liabilities, Fair Value Disclosure [Abstract]
Accrued Liabilities, Fair Value Disclosure	34,781	64,198
US Treasury Securities [Member]
Assets, Fair Value Disclosure [Abstract]
Held-to-maturity Securities	1,009	1,010
Securities held to maturity, fair value	1,064	1,073
US Treasury Securities [Member] | Significant Other Observable Inputs (Level 2) [Member]
Assets, Fair Value Disclosure [Abstract]
Securities held to maturity, fair value	1,064	1,073
Agency mortgage-backed securities
Assets, Fair Value Disclosure [Abstract]
Held-to-maturity Securities	167,134	159,522
Securities held to maturity, fair value	170,375	164,944
Agency mortgage-backed securities | Significant Other Observable Inputs (Level 2) [Member]
Assets, Fair Value Disclosure [Abstract]
Securities held to maturity, fair value	170,375	164,944
Agency collateralized mortgage obligations
Assets, Fair Value Disclosure [Abstract]
Held-to-maturity Securities	267,348	198,220
Securities held to maturity, fair value	264,891	196,584
Agency collateralized mortgage obligations | Significant Other Observable Inputs (Level 2) [Member]
Assets, Fair Value Disclosure [Abstract]
Securities held to maturity, fair value	264,891	196,584
State, county, and municipal securities
Assets, Fair Value Disclosure [Abstract]
Held-to-maturity Securities	225	424
Securities held to maturity, fair value	227	428
State, county, and municipal securities | Significant Other Observable Inputs (Level 2) [Member]
Assets, Fair Value Disclosure [Abstract]
Securities held to maturity, fair value	227	428
Single issuer trust preferred securities issued by banks and insurers
Assets, Fair Value Disclosure [Abstract]
Held-to-maturity Securities	1,500	1,500
Securities held to maturity, fair value	1,522	1,477
Single issuer trust preferred securities issued by banks and insurers | Significant Other Observable Inputs (Level 2) [Member]
Assets, Fair Value Disclosure [Abstract]
Securities held to maturity, fair value	1,522	1,477
Small Business Administration Pooled Securities [Member]
Assets, Fair Value Disclosure [Abstract]
Held-to-maturity Securities	35,291	9,775
Securities held to maturity, fair value	35,664	10,074
Small Business Administration Pooled Securities [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]
Assets, Fair Value Disclosure [Abstract]
Securities held to maturity, fair value	0	0
Small Business Administration Pooled Securities [Member] | Significant Other Observable Inputs (Level 2) [Member]
Assets, Fair Value Disclosure [Abstract]
Securities held to maturity, fair value	35,664	10,074
Small Business Administration Pooled Securities [Member] | Significant Unobservable Inputs (Level 3) [Member]
Assets, Fair Value Disclosure [Abstract]
Securities held to maturity, fair value	0	0
Corporate Debt Securities [Member]
Assets, Fair Value Disclosure [Abstract]
Held-to-maturity Securities	5,000	5,002
Securities held to maturity, fair value	5,006	5,119
Corporate Debt Securities [Member] | Significant Other Observable Inputs (Level 2) [Member]
Assets, Fair Value Disclosure [Abstract]
Securities held to maturity, fair value	5,006	5,119
Loans Net Of Allowance For Loan Loses [Member]
Assets, Fair Value Disclosure [Abstract]
Loans and Leases Receivable, Net Amount	5,491,896	4,907,437
Loans, net of allowance for loan losses	5,422,023	4,875,283
Loans Net Of Allowance For Loan Loses [Member] | Significant Unobservable Inputs (Level 3) [Member]
Assets, Fair Value Disclosure [Abstract]
Loans, net of allowance for loan losses	$ 5,422,023	$ 4,875,283

OTHER COMPREHENSIVE LOSS (Detai

OTHER COMPREHENSIVE LOSS (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Other Comprehensive Income (Loss), before Tax [Abstract]
Change in fair value of securities available for sale, pre tax amount	$ (3,757)	$ 9,095	$ (11,943)
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI for Sale and Write-down of Securities, before Tax	(405)	191	230
Other Comprehensive Income (Loss), Available-for-sale Securities Adjustment, before Tax, Portion Attributable to Parent	(3,352)	8,904	(12,173)
Change in fair value of cash flow hedges, pre tax amount	(776)	(969)	592
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI on Borrowings Expense, before Tax	(2,828)	(3,662)	(5,723)
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI for Loss on Termination of Derivatives, before Tax		(1,122)
Other Comprehensive Income (Loss), Derivatives Qualifying as Hedges, before Tax, Portion Attributable to Parent	2,052	3,815	6,315
Other Comprehensive Income (Loss), Pension and Other Postretirement Benefit Plans, Net Unamortized Gain (Loss) Arising During Period, before Tax	438	(2,699)	1,302
Other Comprehensive (Income) Loss, Pension and Other Postretirement Benefit Plans, Net Prior Service Cost (Credit) Arising During Period, before Tax		1,357
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI, Pension and Other Postretirement Benefit Plans, for Net Gain (Loss), before Tax	(243)	44	(42)
Amortization of certain costs included in net periodic retirement costs, pre tax amount	(294)	(102)	(102)
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI, Pension and Other Postretirement Benefit Plans, for Net Transition Asset (Obligation), before Tax		2	(4)
Other Comprehensive (Income) Loss, Pension and Other Postretirement Benefit Plans, Adjustment, before Tax	975	(4,000)	1,450
Total other comprehensive loss, pre tax amount	(325)	8,719	(4,408)
Other Comprehensive Income (Loss), Tax [Abstract]
Other Comprehensive Income (Loss), Unrealized Holding Gain (Loss) on Securities Arising During Period, Tax	1,434	(3,570)	4,578
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI for Sale and Write-down of Securities, Tax	165	(78)	(94)
Other Comprehensive Income (Loss), Available-for-sale Securities, Tax, Portion Attributable to Parent	1,269	(3,492)	4,672
Other Comprehensive Income (Loss), Unrealized Gain (Loss) on Derivatives Arising During Period, Tax	299	396	(242)
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI on Borrowings Expense, Tax	1,152	1,496	2,338
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI for Loss on Termination of Derivatives, Tax		459
Other Comprehensive Income (Loss), Derivatives Qualifying as Hedges, Tax, Portion Attributable to Parent	(853)	(1,559)	(2,580)
Other Comprehensive Income (Loss), Pension and Other Postretirement Benefit Plans, Net Unamortized Gain (Loss) Arising During Period, Tax	(193)	1,103	(532)
Other Comprehensive (Income) Loss, Pension and Other Postretirement Benefit Plans, Net Prior Service Cost (Credit), Tax		(554)
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI, Pension and Other Postretirement Benefit Plans, for Net Gain (Loss), Tax	99	(18)	17
Other Comprehensive (Income) Loss, Amortization Adjustment from AOCI, Pension and Other Postretirement Benefit Plans, for Net Prior Service Cost (Credit), Tax	119	42	42
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI, Pension and Other Postretirement Benefit Plans, for Net Transition Asset (Obligation), before Tax		(1)	1
Other Comprehensive (Income) Loss, Pension and Other Postretirement Benefit Plans, Tax	(411)	1,634	(592)
Other Comprehensive Income (Loss), Tax, Portion Attributable to Parent	5	(3,417)	1,500
Other Comprehensive Income (Loss), Net of Tax [Abstract]
Other Comprehensive Income (Loss), Unrealized Holding Gain (Loss) on Securities Arising During Period, Net of Tax	(2,323)	5,525	(7,365)
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI for Sale and Write-down of Securities, Net of Tax	(240)	113	136
Other Comprehensive Income (Loss), Available-for-sale Securities Adjustment, Net of Tax, Portion Attributable to Parent	(2,083)	5,412	(7,501)
Other Comprehensive Income (Loss), Unrealized Gain (Loss) on Derivatives Arising During Period, Net of Tax	(477)	(573)	350
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI on Borrowings Expense, Net of Tax	(1,676)	(2,166)	(3,385)
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI for Loss on Termination of Derivatives, Net of Tax		(663)
Other Comprehensive Income (Loss), Derivatives Qualifying as Hedges, Net of Tax, Portion Attributable to Parent	1,199	2,256	3,735
Other Comprehensive Income (Loss), Pension and Other Postretirement Benefit Plans, Net Unamortized Gain (Loss) Arising During Period, Net of Tax	245	(1,596)	770
Other Comprehensive (Income) Loss, Pension and Other Postretirement Benefit Plans, Net Prior Service Cost (Credit) Arising During Period, Net of Tax		803
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI, Pension and Other Postretirement Benefit Plans, for Net Gain (Loss), Net of Tax	(144)	26	(25)
Amortization of certain costs included in net periodic retirement costs, after tax amount	(175)	(60)	(60)
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI, Pension and Other Postretirement Benefit Plans, for Net Transition Asset (Obligation), Net of Tax		1	(3)
Other Comprehensive (Income) Loss, Pension and Other Postretirement Benefit Plans, Adjustment, Net of Tax	564	(2,366)	858
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent	$ (320)	$ 5,302	$ (2,908)

OTHER COMPREHENSIVE LOSS (De128

OTHER COMPREHENSIVE LOSS (Details 1) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning Balance	$ (2,132)	$ (7,434)	$ (4,526)
Total other comprehensive income (loss)	(320)	5,302	(2,908)
Ending Balance	(2,452)	(2,132)	(7,434)
Unrealized Gain on Securities
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning Balance	3,389	(2,023)	5,478
Total other comprehensive income (loss)	(2,083)	5,412	(7,501)
Ending Balance	1,306	3,389	(2,023)
Unrealized Loss on Cash Flow Hedge
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning Balance	(3,298)	(5,698)	(9,577)
Total other comprehensive income (loss)	1,343	2,400	3,879
Ending Balance	(1,955)	(3,298)	(5,698)
Deferred Gain on Hedge Transactions
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning Balance	571	715	859
Total other comprehensive income (loss)	(144)	(144)	(144)
Ending Balance	427	571	715
Defined Benefit Postretirement Plans
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning Balance	(2,794)	(428)	(1,286)
Total other comprehensive income (loss)	564	(2,366)	858
Ending Balance	$ (2,230)	$ (2,794)	$ (428)

OTHER COMPREHENSIVE LOSS (De129

OTHER COMPREHENSIVE LOSS (Details Textual) - USD ($)	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Equity [Abstract]
Gain on interest rate swaps	$ 427,000	$ 571,000	$ 715,000	$ 1,400,000

COMMITMENTS AND CONTINGENCIE130

COMMITMENTS AND CONTINGENCIES (Details) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Commitments to Extend Credit [Member]
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Off-balance sheet financial instruments	$ 2,091,170	$ 1,822,369
Standby letters of credit [Member]
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Off-balance sheet financial instruments	17,962	18,516
Deferred standby letter of credit fees [Member]
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Off-balance sheet financial instruments	$ 72	$ 105

COMMITMENTS AND CONTINGENCIE131

COMMITMENTS AND CONTINGENCIES (Details 1) $ in Thousands	Dec. 31, 2015USD ($)
Operating Leases, Future Minimum Payments Due, Fiscal Year Maturity [Abstract]
2,016	$ 8,943
2,017	8,681
2,018	7,334
2,019	6,670
2,020	5,695
Thereafter	10,220
Total future minimum rentals	$ 47,543

COMMITMENTS AND CONTINGENCIE132

COMMITMENTS AND CONTINGENCIES (Details Textual) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Operating Leases, Rent Expense, Net [Abstract]
Operating lease rent expense	$ 8.2	$ 7.9	$ 7.6
Reserve requirement	$ 21.7	$ 33
Minimum [Member]
Operating Leases, Rent Expense, Net [Abstract]
Operating lease renewal period option	1 year
Maximum [Member]
Operating Leases, Rent Expense, Net [Abstract]
Operating lease renewal period option	10 years

REGULATORY CAPITAL REQUIREME133

REGULATORY CAPITAL REQUIREMENTS (Details) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Company (consolidated) [Member]
Total capital (to risk weighted assets):
Actual	$ 747,372	$ 666,898
Actual Ratio	13.36%	13.15%
Capital Required for Capital Adequacy	$ 447,664	$ 405,650
For Capital Adequacy Purposes Ratio	8.00%	8.00%
Common Equity Tier One Capital	$ 584,378
Common Equity tier One Capital to Risk Weighted Assets	10.44%
Common Equity Tier One Capital Required for Capital Adequacy	$ 251,811
Common Equity Tier One Capital for Capitalized Adequacy to Risk Weighted Assets	4.50%
Tier 1 capital (to risk weighted assets):
Actual	$ 655,154	$ 551,836
Actual Ratio	11.71%	10.88%
For Capital Adequacy Purposes	$ 335,748	$ 202,825
For Capital Adequacy Purposes Ratio	6.00%	4.00%
Tier 1 capital (to average assets):
Actual	$ 655,154	$ 551,836
Actual Ratio	9.33%	8.84%
For Capital Adequacy Purposes	$ 280,889	$ 249,825
For Capital Adequacy Purposes Ratio	4.00%	4.00%
Bank [Member]
Total capital (to risk weighted assets):
Actual	$ 718,197	$ 607,100
Actual Ratio	12.84%	11.98%
Capital Required for Capital Adequacy	$ 447,334	$ 405,465
For Capital Adequacy Purposes Ratio	8.00%	8.00%
To Be Well Capitalized Under Prompt Corrective Action Provisions	$ 559,167	$ 506,831
To Be Well Capitalized Under Prompt Corrective Action Provisions Ratio	10.00%	10.00%
Common Equity Tier One Capital	$ 660,979
Common Equity tier One Capital to Risk Weighted Assets	11.82%
Common Equity Tier One Capital Required for Capital Adequacy	$ 251,625
Common Equity Tier One Capital for Capitalized Adequacy to Risk Weighted Assets	4.50%
Common Equity Tier 1 Capital to be Well Capitalized	$ 363,459
Common Equity Tier One Capital to be Well Capitalized to Risk Weighted Assets	6.50%
Tier 1 capital (to risk weighted assets):
Actual	$ 660,979	$ 527,038
Actual Ratio	11.82%	10.40%
For Capital Adequacy Purposes	$ 335,500	$ 202,732
For Capital Adequacy Purposes Ratio	6.00%	4.00%
To Be Well Capitalized Under Prompt Corrective Action Provisions	$ 447,334	$ 304,099
To Be Well Capitalized Under Prompt Corrective Action Provisions Ratio	8.00%	6.00%
Tier 1 capital (to average assets):
Actual	$ 660,979	$ 527,038
Actual Ratio	9.42%	8.44%
For Capital Adequacy Purposes	$ 280,653	$ 249,788
For Capital Adequacy Purposes Ratio	4.00%	4.00%
To Be Well Capitalized Under Prompt Correction Action Provisions	$ 350,816	$ 312,235
To Be Well Capitalized Under Prompt Correction Action Provisions Ratio	5.00%	5.00%

REGULATORY CAPITAL REQUIREME134

REGULATORY CAPITAL REQUIREMENTS Regulatory Capital Requirements (Details Textual) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014
Banking and Thrift [Abstract]
Cash Dividends Paid to Parent Company by Consolidated Subsidiaries	$ 38.1	$ 40.1
Debt Instrument, Face Amount	$ 71	$ 71

PARENT COMPANY FINANCIALS ON135

PARENT COMPANY FINANCIALS ONLY (Details) - USD ($) $ in Thousands		Dec. 31, 2015		Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Assets:
Deferred tax asset		$ 47,829		$ 49,424
Total assets		7,210,038		6,364,912
Liabilities and stockholders’ equity
Junior subordinated debentures		73,464		73,685
Subordinated Debt		35,000		65,000
Derivative instruments		160,270		225,824
Other liabilities		103,370		107,264
Total liabilities		6,438,575		5,724,385
Stockholders’ equity		771,463		640,527	$ 591,540	$ 529,320
Liabilities and Equity		7,210,038		6,364,912
Parent Company [Member]
Assets:
Cash		35,428	[1]	64,791
Investments in subsidiaries	[2]	851,743		691,406
Prepaid income taxes		530		285
Deferred tax asset		2,229		2,620
Deferred stock issuance costs		569		467
Total assets		890,499		759,569
Liabilities and stockholders’ equity
Dividends payable		6,824		5,761
Junior subordinated debentures		73,464		73,685
Subordinated Debt		35,000		35,000
Derivative instruments	[1]	2,109		4,187
Other liabilities		1,639		409
Total liabilities		119,036		119,042
Stockholders’ equity		771,463		640,527
Liabilities and Equity		890,499		759,569
Consolidation, Eliminations [Member]
Assets:
Investments in subsidiaries		$ 849,500		$ 689,200
[1]	Entire balance eliminates in consolidation.
[2]	$849.5 million and $689.2 million eliminate in consolidation at December 31, 2015 and 2014, respectively.

PARENT COMPANY FINANCIALS ON136

PARENT COMPANY FINANCIALS ONLY (Details 1) - USD ($) $ in Thousands		3 Months Ended								12 Months Ended
		Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Income
Dividends received from subsidiaries(1)										$ (38,100)	$ (40,100)
Expenses
Interest expense		$ 4,985	$ 5,183	$ 5,269	$ 5,180	$ 5,007	$ 4,805	$ 5,232	$ 5,374	20,617	20,417	$ 23,336
Income tax benefit		8,268	7,867	7,213	3,869	6,201	6,415	5,934	5,350	27,218	23,899	16,484
Net Income		$ 19,455	$ 18,594	$ 17,451	$ 9,460	$ 15,978	$ 15,738	$ 14,746	$ 13,383	64,960	59,845	50,254
Parent Company [Member]
Income
Dividends received from subsidiaries(1)	[1]									38,153	40,170	30,694
Interest income(2)	[2]									78	57	50
Total income										38,231	40,227	30,744
Expenses
Interest expense										5,769	4,225	4,122
Other expenses										29		15
Total expenses										5,798	4,225	4,137
Income before income taxes and equity in undistributed income of subsidiaries										32,433	36,002	26,607
Income tax benefit										(2,301)	(1,298)	(1,342)
Income of parent company										34,734	37,300	27,949
Equity in undistributed income of subsidiaries										30,226	22,545	22,305
Net Income										64,960	59,845	50,254
Consolidation, Eliminations [Member]
Income
Dividends received from subsidiaries(1)										$ 55	$ 53	$ 54
[1]	Income of $55,000, $53,000 and $54,000 was not eliminated in consolidation for the years ended December 31, 2015, 2014, and 2013, respectively.
[2]	Entire balance eliminated in consolidation.

PARENT COMPANY FINANCIALS ON137

PARENT COMPANY FINANCIALS ONLY (Details 2) - USD ($) $ in Thousands	3 Months Ended									12 Months Ended
	Dec. 31, 2015		Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2015		Dec. 31, 2014	Dec. 31, 2013
Condensed Financial Statements, Captions [Line Items]
Net income	$ 19,455		$ 18,594	$ 17,451	$ 9,460	$ 15,978	$ 15,738	$ 14,746	$ 13,383	$ 64,960		$ 59,845	$ 50,254
Adjustments to reconcile net income to net cash provided by operating activities
Deferred income tax expense										10,220		2,840	2,557
Change in other assets										3,812		(2,191)	48,903
Change in other liabilities										(2,276)		7,309	(16,016)
Net cash provided by operating activities										89,543		90,305	141,335
Cash flows used in investing activities
Net cash used in investing activities										(205,541)		(292,672)	(208,596)
Cash flows provided by financing activities
Net repayments of short-term Federal Home Loan Bank borrowings										(10,000)		(65,000)	(50,000)
Restricted stock awards issued, net of awards surrendered										(657)		(641)	(669)
Proceeds from stock issued and stock options exercised										1,367		2,333	2,475
Proceeds from shares issued under the direct stock purchase plan										2,695		1,555	969
Common dividends paid										(26,172)		(22,443)	(15,122)
Net cash provided by financing activities										213,509		164,296	68,112
Net increase (decrease) in cash and cash equivalents										97,511		(38,071)	851
Cash and cash equivalents at beginning of year					178,254				216,325	178,254		216,325	215,474
Cash and cash equivalents at end of period	275,765					178,254				275,765		178,254	216,325
Parent Company [Member]
Condensed Financial Statements, Captions [Line Items]
Net income										64,960		59,845	50,254
Adjustments to reconcile net income to net cash provided by operating activities
Accretion										(150)		(486)	(155)
Deferred income tax expense										3,266		293	203
Change in other assets										7,314			(373)
Change in other liabilities										(80)		25	206
Equity in undistributed income of subsidiaries										(30,226)		(22,545)	(22,305)
Net cash provided by operating activities										45,084		37,132	27,830
Cash flows used in investing activities
Cash paid for acquisitions, net of cash acquired										(51,680)			(10,832)
Net cash used in investing activities										(51,680)			(10,832)
Cash flows provided by financing activities
Proceeds from short-term borrowings													10,000
Repayment of short-term borrowings												(5,000)	(17,000)
Net repayments of short-term Federal Home Loan Bank borrowings												35,000
Restricted stock awards issued, net of awards surrendered										(657)		(641)	0
Proceeds from stock issued and stock options exercised										1,367		2,333	2,475
Proceeds from shares issued under the direct stock purchase plan										2,695		1,555	969
Common dividends paid										(26,172)		(22,443)	(15,122)
Net cash provided by financing activities										(22,767)		10,804	(18,678)
Net increase (decrease) in cash and cash equivalents										(29,363)		47,936	(1,680)
Cash and cash equivalents at beginning of year					$ 64,791				$ 16,855	64,791		16,855	18,535
Cash and cash equivalents at end of period	35,428					64,791				35,428		64,791	$ 16,855
Cash	$ 35,428	[1]				$ 64,791				$ 35,428	[1]	$ 64,791
[1]	Entire balance eliminates in consolidation.

SELECTED QUARTERLY FINANCIAL138

SELECTED QUARTERLY FINANCIAL DATA (UNAUDITED) (Details) - USD ($)	3 Months Ended								12 Months Ended
	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Quarterly Financial Information Disclosure [Abstract]
Interest income	$ 59,870,000	$ 60,228,000	$ 59,016,000	$ 56,429,000	$ 54,827,000	$ 54,368,000	$ 54,285,000	$ 52,980,000	$ 235,545,000	$ 216,459,000	$ 205,914,000
Interest expense	4,985,000	5,183,000	5,269,000	5,180,000	5,007,000	4,805,000	5,232,000	5,374,000	20,617,000	20,417,000	23,336,000
Net interest income	54,885,000	55,045,000	53,747,000	51,249,000	49,820,000	49,563,000	49,053,000	47,606,000	214,928,000	196,042,000	182,578,000
Provision (benefit)	500,000	800,000	700,000	(500,000)	1,750,000	1,901,000	2,250,000	4,502,000	1,500,000	10,403,000	10,200,000
Total noninterest income	19,824,000	19,247,000	20,261,000	16,557,000	18,473,000	17,098,000	16,857,000	17,516,000	75,888,000	69,943,000	68,009,000
Total noninterest expenses	46,486,000	47,031,000	48,644,000	54,977,000	44,364,000	42,607,000	42,980,000	41,887,000	197,138,000	171,838,000	173,649,000
Provision for income taxes	8,268,000	7,867,000	7,213,000	3,869,000	6,201,000	6,415,000	5,934,000	5,350,000	27,218,000	23,899,000	16,484,000
Net Income	$ 19,455,000	$ 18,594,000	$ 17,451,000	$ 9,460,000	$ 15,978,000	$ 15,738,000	$ 14,746,000	$ 13,383,000	$ 64,960,000	$ 59,845,000	$ 50,254,000
Basic earnings per share (in dollars per share)	$ 0.74	$ 0.71	$ 0.67	$ 0.38	$ 0.67	$ 0.66	$ 0.62	$ 0.56	$ 2.51	$ 2.50	$ 2.18
Diluted earnings per share (in dollars per share)	$ 0.74	$ 0.71	$ 0.67	$ 0.38	$ 0.66	$ 0.66	$ 0.61	$ 0.56	$ 2.50	$ 2.49	$ 2.18
Weighted average common shares (basic) (in shares)	26,238,004	26,200,621	26,149,593	24,959,865	23,968,320	23,911,678	23,897,413	23,819,065	25,891,382	23,899,562	23,011,814
Common share equivalents (in shares)	52,772	63,493	71,819	80,215	86,812	90,685	94,560	100,173	68,566	93,815	76,764
Weighted average common shares (diluted) (in shares)	26,290,776	26,264,114	26,221,412	25,040,080	24,055,132	24,002,363	23,991,973	23,919,238	25,959,948	23,993,377	23,088,578
Gain on life insurance benefits	$ 0	$ 0	$ 0	$ 0	$ 0	$ 0	$ 337,000	$ 1,627,000	$ 0	$ 1,964,000	$ 227,000
Available-For-Sale Securities - Fixed Income Gross Realized Gains	0	0	798,000	0	121,000	0	0	0	798,000	121,000	258,000
Total Unusual or infrequent Income Items	0	0	798,000	0	121,000	0	337,000	1,627,000
Utilities Operating Expense, Impairments	0	0	109,000	0	0	21,000	0	503,000
Gains (Losses) on Extinguishment of Debt	0	0	0	122,000	0	0	0	0	0	0	(763,000)
Available-for-Sale Securities - Fixed Income Gross Realized Losses	0	0	1,124,000	0	21,000	0	0	0	1,124,000	21,000	0
Loss on termination of derivatives	0	0	0	0	0	0	1,122,000	0		1,100,000
Acquisition Related Costs	0	0	271,000	10,230,000	586,000	677,000		77,000	$ 10,501,000	$ 1,339,000	$ 8,685,000
Total unusual or infrequent expense items	$ 0	$ 0	$ 1,504,000	$ 10,352,000	$ 607,000	$ 698,000	$ 1,122,000	$ 580,000

TRANSACTIONS WITH RELATED PA139

TRANSACTIONS WITH RELATED PARTIES (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Related Party Transaction [Line Items]
Loans and Leases Receivable, Related Parties	$ 24,653	$ 25,994	$ 52,510
Loans and Leases Receivable, Related Parties, Additions	9,268	21,310
Loans and Leases Receivable, Related Parties, Collections	(10,609)	(21,913)
Loans and Leases Receivable, Related Parties, Period Increase (Decrease)	$ 0	$ (25,913)

TRANSACTIONS WITH RELATED PA140

TRANSACTIONS WITH RELATED PARTIES Related Parties Textual (Details) - USD ($)	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Related Party Transaction [Line Items]
Operating Leases, Rent Expense	$ 8,200,000	$ 7,900,000	$ 7,600,000
Related Party Deposit Liabilities	13,900,000	8,700,000
Affiliated Entity [Member]
Related Party Transaction [Line Items]
Operating Leases, Rent Expense	$ 0	$ 278,000	$ 268,000