Independent Bank (INDB) 10-Q/A 7 Aug 15 2015 Q2 Quarterly report (amended) Financial data

Document and Entity Information

Document and Entity Information - shares	6 Months Ended
	Jun. 30, 2015	Aug. 03, 2015
Document and Entity Information [Abstract]
Entity Registrant Name	Independent Bank Corp
Entity Central Index Key	776,901
Document Type	10-Q
Document Period End Date	Jun. 30, 2015
Amendment Flag	false
Document Fiscal Year Focus	2,015
Document Fiscal Period Focus	Q2
Current Fiscal Year End Date	--12-31
Entity Filer Category	Accelerated Filer
Entity Common Stock, Shares Outstanding	26,158,826	26,205,818

Consolidated Balance Sheets (Un

Consolidated Balance Sheets (Unaudited) - Fair Value, Option, Eligible Item or Group [Domain] - USD ($) $ in Thousands	Jun. 30, 2015	Dec. 31, 2014
Assets
Cash and due from banks	$ 100,054	$ 143,342
Interest-earning deposits with banks	295,722	34,912
Securities
Trading Securities	489	0
Securities - available for sale	375,001	348,554
Securities - held to maturity (fair value $431,778 and $379,699)	428,339	375,453
Total securities	803,829	724,007
Disposal Group, Including Discontinued Operation, Mortgage Loans	10,728	6,888
Loans
Loans Receivable, Gross, Commercial and Industrial	873,105	860,839
Loans Receivable, Gross, Commercial, Mortgage	2,630,062	2,347,323
Loans Receivable, Gross, Commercial, Construction	278,692	265,994
Small Business	91,367	85,247
Loans and Leases Receivable, Gross, Consumer, Mortgage	653,370	530,259
Loans and Leases Receivable Consumer Home Equity in First Position	526,370	513,518
Loans and Leases Receivable Consumer Home Equity in Second Position	364,523	350,345
Loans and Leases Receivable, Gross, Consumer, Other	17,293	17,208
Loans and Leases Receivable, Gross	5,434,782	4,970,733
Less: allowance for loan losses	(54,995)	(55,100)
Net loans	5,379,787	4,915,633
Federal Home Loan Bank stock	37,485	33,233
Bank premises and equipment, net	74,143	64,074
Goodwill	201,083	170,421
Identifiable intangible assets	13,248	9,885
Cash surrender value of life insurance policies	132,600	109,854
Other real estate owned and other foreclosed assets	5,124	7,743
Other assets	142,118	144,920
Total assets	7,195,921	6,364,912
Deposits
Demand deposits	1,832,971	1,462,200
Savings and interest checking accounts	2,285,968	2,108,486
Money market	1,125,888	990,160
Time certificates of deposit of $100,000 and over	295,738	254,718
Other time certificates of deposits	429,965	394,902
Total deposits	5,970,530	5,210,466
Borrowings
Federal Home Loan Bank borrowings(c)	108,190	70,080
Customer Repurchase Agreements and other short-term borrowings	119,439	147,890
Wholesale repurchase agreements	50,000	50,000
Junior subordinated debentures	73,576	73,685
Subordinated debentures	35,000	65,000
Total borrowings	386,205	406,655
Other liabilities	95,869	107,264
Total liabilities	$ 6,452,604	$ 5,724,385
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; Issued and Outstanding : 26,158,826 shares at June 30, 2015 and 23,998,738 Shares at December 31, 2014 (includes 243,710 and 254,500 shares of unvested participating restricted stock awards, respectively)	259	237
Shares held in rabbi trust at cost: 171,286 shares at June 30, 2015 and 176,849 shares at December 31, 2014	(3,785)	(3,666)
Deferred Compensation Equity	3,785	3,666
Additional paid in capital	401,437	311,978
Retained earnings	343,757	330,444
Accumulated other comprehensive loss, net of tax	(2,136)	(2,132)
Total stockholders’ equity	743,317	640,527
Total liabilities and stockholders' equity	$ 7,195,921	$ 6,364,912

Consolidated Balance Sheets (U3

Consolidated Balance Sheets (Unaudited) (Parenthetical) - USD ($)	Jun. 30, 2015	Dec. 31, 2014
Statement of Financial Position [Abstract]
Time certificates of deposit least amount	$ 100,000	$ 100,000
Held to Maturity, Fair Value, Total	$ 431,778,000	$ 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	26,158,826	23,998,738
Common Stock, shares outstanding	26,158,826	23,998,738
Common Stock, unvested restricted Stock awards	243,710	254,500
Shares Held in Rabbi Trust	171,286	176,849

Consolidated Statements of Inco

Consolidated Statements of Income (Unaudited) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Interest income
Interest and fees on loans	$ 54,016,000	$ 49,393,000	$ 105,704,000	$ 97,597,000
Taxable interest and dividends on securities	4,852,000	4,690,000	9,479,000	9,340,000
Nontaxable interest and dividends on securities	30,000	37,000	64,000	74,000
Interest on loans held for sale	58,000	96,000	109,000	147,000
Interest on federal funds sold and short-term investments	60,000	69,000	91,000	106,000
Total interest and dividend income	59,016,000	54,285,000	115,447,000	107,264,000
Interest expense
Interest on deposits	2,922,000	2,789,000	5,685,000	5,579,000
Interest on borrowings	2,347,000	2,443,000	4,765,000	5,026,000
Total interest expense	5,269,000	5,232,000	10,450,000	10,605,000
Net interest income	53,747,000	49,053,000	104,997,000	96,659,000
Provision for loan losses	700,000	2,250,000	200,000	6,752,000
Net interest income after provision for loan losses	53,047,000	46,803,000	104,797,000	89,907,000
Noninterest income
Deposit account fees	4,465,000	4,463,000	8,631,000	8,821,000
Interchange and ATM fees	3,767,000	3,322,000	6,868,000	6,298,000
Investment management	5,528,000	5,136,000	10,635,000	9,739,000
Mortgage banking income	1,226,000	877,000	2,352,000	1,364,000
Loan level derivative income	1,430,000	324,000	1,848,000	1,070,000
Increase in cash surrender value of life insurance policies	949,000	721,000	1,727,000	1,443,000
Gain Realized on Life Insurance Policies	0	337,000	0	1,964,000
Available-For-Sale- Securities - Equity - Gross Realized Gains	19,000	(20,000)	19,000	71,000
Available-For-Sale Securities - Fixed Income Gross Realized Gains	798,000	0	798,000	0
Other noninterest income	2,079,000	1,697,000	3,939,000	3,602,000
Total noninterest income	20,261,000	16,857,000	36,817,000	34,372,000
Noninterest expenses
Salaries and employee benefits	26,318,000	22,843,000	51,606,000	45,923,000
Occupancy and equipment expenses	5,672,000	5,301,000	12,066,000	11,447,000
Data processing & facilities management	1,228,000	1,179,000	2,350,000	2,432,000
FDIC assessment	1,017,000	966,000	1,973,000	1,871,000
Advertising expense	1,853,000	1,249,000	2,687,000	2,073,000
Consulting expense	829,000	810,000	1,585,000	1,368,000
Available-For-Sale Securities - Equity Gross Realized Losses	8,000	0	8,000	0
Available-for-Sale Securities - Fixed Income Gross Realized Losses	1,124,000	0	1,124,000	0
Loss on termination of derivatives	0	1,122,000	0	1,122,000
Business Combination, Acquisition Related Costs	271,000	0	10,501,000	77,000
Other noninterest expenses	10,324,000	9,510,000	19,722,000	18,553,000
Total noninterest expenses	48,644,000	42,980,000	103,622,000	84,866,000
Income before income taxes	24,664,000	20,680,000	37,992,000	39,413,000
Provision for income taxes	7,213,000	5,934,000	11,082,000	11,284,000
Net income	$ 17,451,000	$ 14,746,000	$ 26,910,000	$ 28,129,000
Basic earnings per share (in dollars per share)	$ 0.67	$ 0.62	$ 1.05	$ 1.18
Diluted earnings per share (in dollars per share)	$ 0.67	$ 0.61	$ 1.05	$ 1.17
Weighted average common shares (basic) (in shares)	26,149,593	23,897,413	25,558,016	23,858,456
Common shares equivalents (in shares)	71,819	94,560	76,626	97,544
Weighted average common shares (diluted) (in shares)	26,221,412	23,991,973	25,634,642	23,956,000
Retained Earnings [Member]
Noninterest expenses
Net income			$ 26,910,000	$ 28,129,000
Cash dividends declared per common share (in dollars per share)	$ 0.26	$ 0.24	$ 0.52	$ 0.48

Consolidated Statements of Comp

Consolidated Statements of Comprehensive Income (Unaudited) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Statement of Comprehensive Income [Abstract]
Net income	$ 17,451	$ 14,746	$ 26,910	$ 28,129
Other comprehensive income (loss), net of tax
Net change in fair value of securities available for sale	(2,228)	2,395	(667)	4,312
Net change in fair value of cash flow hedges	382	1,005	464	1,507
Net change in other comprehensive income for defined benefit postretirement plans	123	(39)	199	(78)
Total other comprehensive income (loss)	(1,723)	3,361	(4)	5,741
Total comprehensive income	$ 15,728	$ 18,107	$ 26,906	$ 33,870

Consolidated Statements of Stoc

Consolidated Statements of Stockholders' Equity (Unaudited) - USD ($) $ in Thousands	Total	Common Stock Outstanding	Common Stock	Value of Shares Held in Rabbi Trust at Cost	Deferred Compensation and Other Retirement Benefit Obligations	Additional Paid in Capital	Retained Earnings	Accumulated Other Comprehensive Loss
Balance June 30, 2015 at Dec. 31, 2013		23,805,984
Balance June 30, 2014 at Dec. 31, 2013	$ 591,540		$ 235	$ (3,404)	$ 3,404	$ 305,179	$ 293,560	$ (7,434)
Net income	28,129						28,129
Other comprehensive loss	5,741							5,741
Common dividend declared ($0.52 per share)	(11,463)						(11,463)
Common stock issued for acquisition	0
Proceeds from exercise of stock options, net of cash paid		20,609
Proceeds from exercise of stock options, net of cash paid	468					468
Tax benefit related to equity award activity	449					449
Stock based compensation	1,496					1,496
Restricted stock awards issued, net of awards surrendered		60,495
Restricted stock awards issued, net of awards surrendered	(642)		1			(643)
Shares issued under direct stock purchase plan		16,984
Shares issued under direct stock purchase plan	643					643
Deferred compensation and other retirement benefit obligations				(124)	124
Tax benefit related to deferred compensation distributions	128					128
Balance December 31, 2014 at Jun. 30, 2014	$ 616,489		236	(3,528)	3,528	307,720	310,226	(1,693)
Balance December 31, 2013 at Jun. 30, 2014		23,904,072
Balance June 30, 2015 at Dec. 31, 2014	23,998,738	23,998,738
Balance June 30, 2014 at Dec. 31, 2014	$ 640,527		237	(3,666)	3,666	311,978	330,444	(2,132)
Net income	26,910						26,910
Other comprehensive loss	(4)							(4)
Common dividend declared ($0.52 per share)	(13,597)						(13,597)
Common stock issued for acquisition		2,052,137
Common stock issued for acquisition	86,415		21			86,394
Proceeds from exercise of stock options, net of cash paid		40,314
Proceeds from exercise of stock options, net of cash paid	311					311
Tax benefit related to equity award activity	546					546
Stock based compensation	1,362					1,362
Restricted stock awards issued, net of awards surrendered		36,101
Restricted stock awards issued, net of awards surrendered	(645)		1			(646)
Shares issued under direct stock purchase plan		31,536
Shares issued under direct stock purchase plan	1,327					1,327
Deferred compensation and other retirement benefit obligations				(119)	119
Tax benefit related to deferred compensation distributions	165					165
Balance December 31, 2014 at Jun. 30, 2015	$ 743,317		$ 259	$ (3,785)	$ 3,785	$ 401,437	$ 343,757	$ (2,136)
Balance December 31, 2013 at Jun. 30, 2015	26,158,826	26,158,826

Consolidated Statements of Sto7

Consolidated Statements of Stockholders' Equity (Unaudited) (Parenthetical) - $ / shares	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Retained Earnings
CASH DIVIDENDS DECLARED PER COMMON SHARE	$ 0.26	$ 0.24	$ 0.52	$ 0.48

Consolidated Statements of Cash

Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014
CASH FLOWS FROM OPERATING ACTIVITIES:
Net Income	$ 26,910	$ 28,129
Adjustments to reconcile net income to net cash provided by operating activities
Depreciation and amortization	6,388	6,153
Provision for loan losses	200	6,752
Deferred income tax expense	5,372	563
Net (gain) loss on sale of securities	315	(71)
Net loss on fixed assets	110	390
Gain (Loss) on Sale of Derivatives	0	(1,122)
Net loss on other real estate owned and foreclosed assets	630	232
Realized gain on sale leaseback transaction	(517)	(517)
Stock based compensation	1,362	1,496
Excess tax benefit related to equity award activity	(546)	(449)
Increase in cash surrender value of life insurance policies	(1,727)	(1,443)
Gain Realized on Life Insurance Policies	0	(1,964)
Change in fair value on loans held for sale	(184)	(225)
Net change in:
Trading assets	(489)	0
Loans held for sale	(3,656)	(7,018)
Other assets	16,057	1,572
Increase (Decrease) in Other Operating Liabilities	(12,353)	(4,154)
Total adjustments	10,962	2,439
Net cash provided by operating activities	37,872	30,568
Cash flows used in investing activities
Proceeds from sales of securities available for sale	14,344	673
Proceeds from maturities and principal repayments of securities available for sale	34,849	23,510
Purchases of securities available for sale	(34,193)	(868)
Proceeds from maturities and principal repayments of securities held to maturity	29,030	20,216
Purchases of securities held to maturity	(81,859)	(43,493)
Redemption of Federal Home Loan Bank stock		(2,576)
Investments in low income housing projects	(12,272)	(3,748)
Purchases of life insurance policies	(100)	(101)
Proceeds from life insurance policies	0	5,735
Net increase in loans	(1,137)	(177,486)
Cash used in business combinations, net of cash acquired	(13,448)	0
Purchases of bank premises and equipment	(4,537)	(3,915)
Proceeds from the sale of bank premises and equipment	347	759
Payments on early termination of hedging relationship		(1,122)
Proceeds from the sale of other real estate owned and foreclosed assets	3,879	2,810
Net capital improvements to other real estate owned	(765)	(875)
Net cash used in investing activities	(65,862)	(175,329)
Cash flows provided by financing activities
Net decrease in time deposits	(39,853)	(40,770)
Net increase in other deposits	367,667	352,513
Net repayments of short-term Federal Home Loan Bank borrowings	(10,000)	(75,000)
Repayments of long-term Federal Home Loan Bank borrowings	(3,000)	(5,000)
Net decrease in customer repurchase agreements	(28,451)	(17,522)
Net decrease in other short term borrowings		(5,000)
Repayments of subordinated debentures	(30,000)	0
Net proceeds from exercise of stock options	311	468
Restricted stock awards issued, net of awards surrendered	(645)	(642)
Excess tax benefit from stock based compensation	546	449
Tax benefit from deferred compensation distribution	165	128
Proceeds from shares issued under direct stock purchase plan	1,327	643
Common dividends paid	(12,555)	(10,967)
Net cash provided by financing activities	245,512	199,300
Net increase in cash and cash equivalents	217,522	54,539
Cash and cash equivalents at beginning of year	178,254	216,325
Cash and cash equivalents at end of period	395,776	270,864
Supplemental schedule of noncash investing and financing activities
Real Estate Owned, Transfer from Real Estate Owned	983	4,257
Other net transfers to other real estate owned	142
Increase (decrease) in capital commitments relating to low income housing project investments	(1,055)	25,840
Common stock issued for acquisition	86,415	$ 0
Fair value of assets acquired, net of cash acquired	598,376
Fair value of liabilities assumed	$ 498,513

Basis of Presentation

Basis of Presentation	6 Months Ended
	Jun. 30, 2015
Organization, Consolidation and Presentation of Financial Statements [Abstract]
BASIS OF PRESENTATION	BASIS OF PRESENTATION Independent Bank Corp. (the “Company”) is a state chartered, federally registered bank holding company, incorporated in 1985. The Company is the sole stockholder of Rockland Trust Company (“Rockland Trust” or the “Bank”), a Massachusetts trust company chartered in 1907. All material intercompany balances and transactions have been eliminated in consolidation. Certain previously reported amounts may have been reclassified to conform to the current year’s presentation. The accompanying unaudited consolidated financial statements have been prepared in accordance with accounting principles generally accepted in the United States of America ("GAAP") for interim financial information and with the instructions to Form 10-Q and Article 10 of Regulation S-X. Accordingly, they do not include all of the information and footnotes required by GAAP for complete financial statements. In the opinion of management, all adjustments considered necessary for a fair presentation of the financial statements, primarily consisting of normal recurring adjustments, have been included. Operating results for the quarter ended June 30, 2015 are not necessarily indicative of the results that may be expected for the year ending December 31, 2015 or any other interim period. For further information, refer to the consolidated financial statements and footnotes thereto included in the Company’s Annual Report on Form 10-K for the year ended December 31, 2014 , filed with the Securities and Exchange Commission.

Recent Accounting Standards

Recent Accounting Standards	6 Months Ended
	Jun. 30, 2015
Recent Accounting Standards [Abstract]
RECENT ACCOUNTING STANDARDS	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 account 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.

ACQUISITIONS

ACQUISITIONS	6 Months Ended
	Jun. 30, 2015
Business Combinations [Abstract]
Business Combination Disclosure [Text Block]	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 $271,000 and $10.5 million during the three and six months ended June 30, 2015, respectively. 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: (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. Three Months Ended Six Months Ended June 30 June 30 2015 2014 2015 2014 (Dollars in thousands) Net interest income after provision for loan losses $ 53,047 $ 51,273 $ 107,455 $ 98,789 Net income 17,606 15,285 31,766 29,182 Excluded from the pro forma results of operations for the three and six months ended June 30, 2015 are merger-related costs of $271,000 and $16.7 million , respectively, 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	6 Months Ended
	Jun. 30, 2015
Investments, Debt and Equity Securities [Abstract]
SECURITIES	SECURITIES Trading Securities As of June 30, 2015 , the Company had trading securities of $489,000 . 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. 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 below: June 30, 2015 December 31, 2014 Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Fair Value Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Fair Value (Dollars in thousands) Available for sale securities U.S. government agency securities $ 39,375 $ 351 $ — $ 39,726 $ 41,369 $ 139 $ (22 ) $ 41,486 Agency mortgage-backed securities 226,438 5,436 (877 ) 230,997 211,168 7,203 (693 ) 217,678 Agency collateralized mortgage obligations 55,241 477 (516 ) 55,202 63,059 599 (623 ) 63,035 State, county, and municipal securities 4,571 97 — 4,668 5,106 117 — 5,223 Single issuer trust preferred securities issued by banks 2,889 11 (28 ) 2,872 2,913 12 (16 ) 2,909 Pooled trust preferred securities issued by banks and insurers (1) 2,246 — (651 ) 1,595 7,906 195 (1,780 ) 6,321 Small business administration pooled securities 26,632 — (135 ) 26,497 — — — — Equity securities 13,201 579 (336 ) 13,444 11,572 567 (237 ) 11,902 Total available for sale securities $ 370,593 $ 6,951 $ (2,543 ) $ 375,001 $ 343,093 $ 8,832 $ (3,371 ) $ 348,554 Held to maturity securities U.S. Treasury securities $ 1,009 $ 61 $ — $ 1,070 $ 1,010 $ 63 $ — $ 1,073 Agency mortgage-backed securities 158,432 4,011 (69 ) 162,374 159,522 5,422 — 164,944 Agency collateralized mortgage obligations 224,994 1,885 (2,754 ) 224,125 198,220 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 — — 1,500 1,500 — (23 ) 1,477 Small business administration pooled securities 37,178 341 (103 ) 37,416 9,775 299 — 10,074 Corporate debt securities 5,001 65 — 5,066 5,002 117 — 5,119 Total held to maturity securities $ 428,339 $ 6,365 $ (2,926 ) $ 431,778 $ 375,453 $ 7,747 $ (3,501 ) $ 379,699 Total $ 798,932 $ 13,316 $ (5,469 ) $ 806,779 $ 718,546 $ 16,579 $ (6,872 ) $ 728,253 (1) Gross unrealized gains and gross unrealized losses include $230,000 of net non-credit related other-than-temporary impairment ("OTTI") at December 31, 2014 . There was no non-credit related OTTI at June 30, 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 Company realized a loss of $8,000 and a gain of $19,000 on equity securities classified as available for sale during the three and six month periods ending June 30, 2015 . The Company realized a net loss of $20,000 and a net gain of $71,000 on equity securities classified as available for sale during the three and six month period ending June 30, 2014 , respectively. The Company realized a loss of $1.1 million and a gain of $798,000 on the sale of the Company's fixed income securities during the three and six month periods ending June 30, 2015 . There were no gains or losses on sale on the Company's fixed income securities during the respective periods ending June 30, 2014 . 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 June 30, 2015 is presented below: Available for Sale Held to Maturity Amortized Cost Fair Value Amortized Cost Fair Value (Dollars in thousands) Due in one year or less $ — $ — $ 5,226 $ 5,293 Due after one year to five years 46,469 47,097 149 152 Due after five to ten years 92,147 92,354 29,960 30,547 Due after ten years 218,776 222,106 393,004 395,786 Total debt securities $ 357,392 $ 361,557 $ 428,339 $ 431,778 Equity securities $ 13,201 $ 13,444 $ — $ — Total $ 370,593 $ 375,001 $ 428,339 $ 431,778 Inclusive in the table above is $27.6 million of callable securities in the Company’s investment portfolio at June 30, 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 $317.6 million and $340.0 million at June 30, 2015 and December 31, 2014 , respectively. At June 30, 2015 and December 31, 2014 , the Company had no investments in obligations of individual states, counties, or municipalities which exceeded 10% of stockholders’ equity . Other-Than-Temporary Impairment ("OTTI") 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: June 30, 2015 Less than 12 months 12 months or longer Total # of holdings Fair Value Unrealized Losses Fair Value Unrealized Losses Fair Value Unrealized Losses (Dollars in thousands) Agency mortgage-backed securities 40 $ 76,234 $ (766 ) $ 4,542 $ (180 ) $ 80,776 $ (946 ) Agency collateralized mortgage obligations 14 45,813 (329 ) 88,668 (2,941 ) 134,481 (3,270 ) Single issuer trust preferred securities issued by banks and insurers 2 2,113 (28 ) — — 2,113 (28 ) Pooled trust preferred securities issued by banks and insurers 1 — — 1,595 (651 ) 1,595 (651 ) Small business administration pooled securities 3 39,349 (238 ) — — 39,349 (238 ) Equity securities 26 2,717 (123 ) 4,330 (213 ) 7,047 (336 ) Total temporarily impaired securities 86 $ 166,226 $ (1,484 ) $ 99,135 $ (3,985 ) $ 265,361 $ (5,469 ) December 31, 2014 Less than 12 months 12 months or longer Total # of holdings Fair Value Unrealized Losses Fair Value Unrealized Losses Fair Value Unrealized Losses (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 June 30, 2015 : • 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 carry the implicitly or, in some cases the explicit guarantee of 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 following table shows the total OTTI that the Company recorded for the periods indicated: Three Months Ended Six Months Ended June 30 June 30 2015 2014 2015 2014 (Dollars in thousands) Gross change in OTTI recorded on certain investments $ — $ 196 $ 84 $ 1,029 Portion of OTTI recognized in OCI — (196 ) (84 ) (1,029 ) Total credit related OTTI recognized in earnings $ — $ — $ — $ — The following table shows the cumulative credit related component of OTTI for the periods indicated: Three Months Ended Six Months Ended June 30 June 30 2015 2014 2015 2014 (Dollars in thousands) Balance at beginning of period $ (9,997 ) $ (9,997 ) $ (9,997 ) $ (9,997 ) Add Incurred on securities not previously impaired — — — — Incurred on securities previously impaired — — — — Less Securities sold during the period 9,997 — 9,997 — 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	6 Months Ended
	Jun. 30, 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 The following tables bifurcate the amount of loans and the allowance allocated to each loan category based on the type of impairment analysis as of the periods indicated: June 30, 2015 (Dollars in thousands) Commercial and Industrial Commercial Real Estate Commercial Construction Small Business Residential Real Estate Home Equity Other Consumer Total Financing receivables ending balance: Collectively evaluated for impairment $ 867,695 $ 2,588,279 $ 278,205 $ 90,481 $ 629,556 $ 884,588 $ 15,618 $ 5,354,422 Individually evaluated for impairment $ 5,410 $ 29,562 $ 309 $ 886 $ 14,940 $ 5,895 $ 1,664 $ 58,666 Purchased credit impaired loans $ — $ 12,221 $ 178 $ — $ 8,874 $ 410 $ 11 $ 21,694 Total loans by group $ 873,105 $ 2,630,062 $ 278,692 $ 91,367 $ 653,370 $ 890,893 $ 17,293 $ 5,434,782 (1 ) December 31, 2014 (Dollars in thousands) Commercial and Industrial Commercial Real Estate Commercial Construction Small Business Residential Real Estate Home Equity Other Consumer Total 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 ) (1) The amount of net deferred fees included in the ending balance was $3.5 million and $2.8 million at June 30, 2015 and December 31, 2014 , respectively. The following tables summarize changes in allowance for loan losses by loan category for the periods indicated: Three Months Ended June 30, 2015 (Dollars in thousands) Commercial and Industrial Commercial Real Estate Commercial Construction Small Business Residential Real Estate Home Equity Other Consumer Total Allowance for loan losses Beginning balance $ 14,557 $ 26,285 $ 4,142 $ 1,222 $ 2,726 $ 4,906 $ 677 $ 54,515 Charge-offs (473 ) (67 ) — (47 ) (17 ) (248 ) (247 ) (1,099 ) Recoveries 502 169 — 66 1 31 110 879 Provision 693 (28 ) (71 ) 7 (159 ) 182 76 700 Ending balance $ 15,279 $ 26,359 $ 4,071 $ 1,248 $ 2,551 $ 4,871 $ 616 $ 54,995 Three Months Ended June 30, 2014 (Dollars in thousands) Commercial and Industrial Commercial Real Estate Commercial Construction Small Business Residential Real Estate Home Equity Other Consumer Total Allowance for loan losses Beginning balance $ 15,601 $ 24,917 $ 3,570 $ 1,207 $ 2,829 $ 4,758 $ 747 $ 53,629 Charge-offs (470 ) (660 ) — (128 ) (326 ) (308 ) (258 ) (2,150 ) Recoveries 128 197 — 92 190 55 147 809 Provision (benefit) 670 641 187 (17 ) 186 464 119 2,250 Ending balance $ 15,929 $ 25,095 $ 3,757 $ 1,154 $ 2,879 $ 4,969 $ 755 $ 54,538 Six Months Ended June 30, 2015 (Dollars in thousands) Commercial and Industrial Commercial Real Estate Commercial Construction Small Business Residential Real Estate Home Equity Other Consumer Total Allowance for loan losses Beginning balance $ 15,573 $ 25,873 $ 3,945 $ 1,171 $ 2,834 $ 4,956 $ 748 $ 55,100 Charge-offs (1,034 ) (208 ) — (196 ) (202 ) (411 ) (573 ) (2,624 ) Recoveries 881 854 — 132 46 105 301 2,319 Provision (benefit) (141 ) (160 ) 126 141 (127 ) 221 140 200 Ending balance $ 15,279 $ 26,359 $ 4,071 $ 1,248 $ 2,551 $ 4,871 $ 616 $ 54,995 Ending balance: individually evaluated for impairment $ 310 $ 201 $ — $ 4 $ 1,337 $ 250 $ 30 $ 2,132 Ending balance: collectively evaluated for impairment $ 14,969 $ 26,158 $ 4,071 $ 1,244 $ 1,214 $ 4,621 $ 586 $ 52,863 Six Months Ended June 30, 2014 (Dollars in thousands) Commercial and Industrial Commercial Real Estate Commercial Construction Small Business Residential Real Estate Home Equity Other Consumer Total Allowance for loan losses Beginning balance $ 15,622 $ 24,541 $ 3,371 $ 1,215 $ 2,760 $ 5,036 $ 694 $ 53,239 Charge-offs (1,253 ) (3,582 ) — (396 ) (454 ) (402 ) (629 ) (6,716 ) Recoveries 207 265 — 139 190 148 314 1,263 Provision (benefit) 1,353 3,871 386 196 383 187 376 6,752 Ending balance $ 15,929 $ 25,095 $ 3,757 $ 1,154 $ 2,879 $ 4,969 $ 755 $ 54,538 Ending balance: individually evaluated for impairment $ 472 $ 292 $ — $ 45 $ 1,599 $ 273 $ 49 $ 2,730 Ending balance: collectively evaluated for impairment $ 15,457 $ 24,803 $ 3,757 $ 1,109 $ 1,280 $ 4,696 $ 706 $ 51,808 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 secured by senior or junior mortgage liens on owner-occupied 1-4 family homes, condominiums or vacation homes or on nonowner occupied 1-4 family homes with more restrictive loan to value requirements. 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, auto loans, 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 leverage and/or weakening market fundamentals that indicate above average or 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: June 30, 2015 Category Risk Rating Commercial and Industrial Commercial Real Estate Commercial Construction Small Business Total (Dollars in thousands) Pass 1 - 6 $ 803,026 $ 2,488,514 $ 268,628 $ 87,815 $ 3,647,983 Potential weakness 7 50,448 77,276 9,530 2,790 140,044 Definite weakness-loss unlikely 8 19,540 63,069 534 684 83,827 Partial loss probable 9 91 1,203 — 78 1,372 Definite loss 10 — — — — — Total $ 873,105 $ 2,630,062 $ 278,692 $ 91,367 $ 3,873,226 December 31, 2014 Category Risk Rating Commercial and Industrial Commercial Real Estate Commercial Construction 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-loss unlikely 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”) 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: June 30, December 31, Residential portfolio FICO score (re-scored)(1) 741 739 LTV (re-valued)(2) 60.3 % 67.1 % Home equity portfolio FICO score (re-scored)(1) 764 764 LTV (re-valued)(2) 50.5 % 53.6 % (1) The average FICO scores for June 30, 2015 are based upon rescores available from May 31, 2015 and origination score data for loans booked between June 1 and June 30, 2015. The average FICO scores for December 31, 2014 are based upon rescores available from November 30, 2014 and origination score data for loans booked between December 1, 2014 and December 31, 2014. (2) The combined LTV ratios for June 30, 2015 are based upon updated automated valuations as of March 31, 2015 and origination value data for loans booked between April 1, 2015 and June 30, 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. The Company’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 Company 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. As permitted by banking regulations, certain consumer loans 90 days or more past due may continue to accrue interest. The Company also may use discretion regarding other loans over 90 days delinquent if the loan is well secured and in process of collection. Set forth below is information regarding the Company’s nonaccrual, delinquent, TDRs, and impaired loans at the period shown. The following table shows nonaccrual loans at the dates indicated: June 30, 2015 December 31, 2014 (Dollars in thousands) Commercial and industrial $ 3,767 $ 2,822 Commercial real estate 6,515 7,279 Commercial construction 309 311 Small business 198 246 Residential real estate 7,982 8,697 Home equity 7,238 8,038 Other consumer 37 — Total nonaccrual loans(1) $ 26,046 $ 27,393 (1) Included in these amounts were $5.6 million and $5.2 million of nonaccruing TDRs at June 30, 2015 and December 31, 2014 , respectively. The following table shows information regarding foreclosed residential real estate property at the date indicated: June 30, 2015 (Dollars in thousands) Foreclosed residential real estate property held by the creditor $ 1,390 Recorded investment in mortgage loans collateralized by residential real estate property that are in the process of foreclosure $ 2,199 The following table shows the age analysis of past due financing receivables as of the dates indicated: June 30, 2015 30-59 days 60-89 days 90 days or more Total Past Due Total Financing Receivables Recorded Investment >90 Days and Accruing Number of Loans Principal Balance Number of Loans Principal Balance Number of Loans Principal Balance Number of Loans Principal Balance Current (Dollars in thousands) Loan Portfolio Commercial and industrial 11 $ 1,528 5 $ 1,423 11 $ 2,951 27 $ 5,902 $ 867,203 $ 873,105 $ — Commercial real estate 12 3,052 7 3,792 19 4,442 38 11,286 2,618,776 2,630,062 — Commercial construction — — — — 1 309 1 309 278,383 278,692 — Small business 7 143 2 2 9 85 18 230 91,137 91,367 — Residential real estate 8 1,030 5 855 25 3,780 38 5,665 647,705 653,370 104 Home equity 16 688 11 692 18 1,582 45 2,962 887,931 890,893 — Other consumer 25 150 8 10 7 17 40 177 17,116 17,293 — Total 79 $ 6,591 38 $ 6,774 90 $ 13,166 207 $ 26,531 $ 5,408,251 $ 5,434,782 $ 104 December 31, 2014 30-59 days 60-89 days 90 days or more Total Past Due Total Financing Receivables Recorded Investment >90 Days and Accruing Number of Loans Principal Balance Number of Loans Principal Balance Number of Loans Principal Balance Number of Loans Principal Balance Current (Dollars in thousands) Loan Portfolio 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 34 233 6 20 8 13 48 266 16,942 17,208 13 Total 112 $ 20,609 47 $ 4,725 110 $ 14,270 269 $ 39,604 $ 4,931,129 $ 4,970,733 $ 119 In the course of resolving nonperforming loans, the Company may choose to restructure the contractual terms of certain loans. The Company 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 Company to identify if a TDR has occurred, which is when, for economic or legal reasons related to a borrower’s financial difficulties, the Company 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: June 30, 2015 December 31, 2014 (Dollars in thousands) TDRs on accrual status $ 36,750 $ 38,382 TDRs on nonaccrual 5,623 5,248 Total TDRs $ 42,373 $ 43,630 Amount of specific reserves included in the allowance for loan losses associated with TDRs: $ 1,872 $ 2,004 Additional commitments to lend to a borrower who has been a party to a TDR: $ 1,522 $ 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: Three Months Ended Six Months Ended June 30, 2015 June 30, 2015 Number of Contracts Pre-Modification Outstanding Recorded Investment Post-Modification Outstanding Recorded Investment (1) Number of Contracts Pre-Modification Outstanding Recorded Investment Post-Modification Outstanding Recorded Investment (1) (Dollars in thousands) Troubled debt restructurings Commercial and industrial 7 $ 1,197 $ 1,197 10 $ 1,353 $ 1,353 Commercial real estate 4 2,071 2,071 5 2,310 2,310 Small business 3 116 116 5 166 166 Residential real estate — — — 3 157 157 Home equity 1 31 31 3 215 215 Total 15 $ 3,415 $ 3,415 26 $ 4,201 $ 4,201 Three Months Ended Six Months Ended June 30, 2014 June 30, 2014 Number of Contracts Pre-Modification Outstanding Recorded Investment Post-Modification Outstanding Recorded Investment (1) Number of Contracts Pre-Modification Outstanding Recorded Investment Post-Modification Outstanding Recorded Investment (1) (Dollars in thousands) Troubled debt restructurings Commercial and industrial 3 $ 399 $ 399 12 $ 824 $ 824 Commercial real estate — — — 6 1,882 1,882 Small business 1 117 117 2 174 174 Residential real estate — — — 2 542 513 Home equity 3 520 520 4 616 616 Other consumer — — — 1 8 8 Total 7 $ 1,036 $ 1,036 27 $ 4,046 $ 4,017 (1) The post-modification balances represent the balance of the loan on the date of modifications. 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 during the period indicated: Three Months Ended June 30 Six Months Ended June 30 2015 2014 2015 2014 (Dollars in thousands) (Dollars in thousands) Extended maturity $ 1,005 $ 633 $ 1,648 $ 1,640 Adjusted interest rate — — — 728 Combination rate & maturity 2,410 403 2,523 1,670 Court ordered concession — — 30 8 Total $ 3,415 $ 1,036 $ 4,201 $ 4,046 The Company considers a loan to have defaulted when it reaches 90 days past due. The following table shows loans that have been modified during the past twelve months which have subsequently defaulted during the periods indicated. Three Months Ended June 30 2015 2014 Number of Contracts Recorded Investment Number of Contracts Recorded Investment (Dollars in thousands) Troubled debt restructurings that subsequently defaulted Commercial real estate — $ — 1 $ 73 Residential real estate — — 1 136 — $ — 2 $ 209 Six Months Ended June 30 2015 2014 Number of Contracts Recorded Investment Number of Contracts Recorded Investment (Dollars in thousands) Troubled debt restructurings that subsequently defaulted Commercial real estate 2 $ 880 2 $ 249 Commercial and industrial 3 339 — — Residential real estate — — 1 136 5 $ 1,219 3 $ 385 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 estimated 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. 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 tables below set forth information regarding the Company’s impaired loans by loan portfolio at the dates indicated: June 30, 2015 Recorded Investment Unpaid Principal Balance Related Allowance (Dollars in thousands) With no related allowance recorded Commercial and industrial $ 2,785 $ 2,914 $ — Commercial real estate 14,379 15,352 — Commercial construction 309 310 — Small business 452 492 — Residential real estate 3,357 3,469 — Home equity 4,565 4,621 — Other consumer 1,199 1,208 — Subtotal 27,046 28,366 — With an allowance recorded Commercial and industrial $ 2,625 $ 2,769 $ 310 Commercial real estate 15,183 15,332 201 Small business 434 462 4 Residential real estate 11,583 12,677 1,337 Home equity 1,330 1,467 250 Other consumer 465 479 30 Subtotal 31,620 33,186 2,132 Total $ 58,666 $ 61,552 $ 2,132 December 31, 2014 Recorded Investment Unpaid Principal Balance Related Allowance (Dollars in thousands) With no related allowance recorded Commercial and industrial $ 3,005 $ 3,278 $ — Commercial real estate 15,982 17,164 — Commercial construction 311 311 — Small business 692 718 — Residential real estate 2,439 2,502 — Home equity 4,169 4,221 — Other consumer 338 341 — Subtotal 26,936 28,535 — With an allowance recorded Commercial and industrial $ 1,649 $ 1,859 $ 412 Commercial real estate 14,747 15,514 197 Small business 396 458 7 Residential real estate 12,616 13,727 1,500 Home equity 1,161 1,264 262 Other consumer 530 530 38 Subtotal 31,099 33,352 2,416 Total $ 58,035 $ 61,887 $ 2,416 The following tables set forth information regarding interest income recognized on impaired loans, by portfolio, for the periods indicated: Three Months Ended Six Months Ended June 30, 2015 June 30, 2015 Average Recorded Investment Interest Income Recognized Average Recorded Investment Interest Income Recognized (Dollars in thousands) With no related allowance recorded Commercial and industrial $ 2,842 $ 40 $ 2,927 $ 81 Commercial real estate 14,467 227 15,044 471 Commercial construction 310 3 311 7 Small business 459 6 471 13 Residential real estate 3,385 40 3,403 79 Home equity 4,585 51 4,613 102 Other consumer 1,204 6 1,074 11 Subtotal 27,252 373 27,843 764 With an allowance recorded Commercial and industrial $ 2,712 $ 31 $ 2,749 $ 62 Commercial real estate 15,231 204 15,292 406 Small business 442 7 453 15 Residential real estate 11,608 128 11,662 295 Home equity 1,336 16 1,345 31 Other consumer 472 5 490 9 Subtotal 31,801 391 31,991 818 Total $ 59,053 $ 764 $ 59,834 $ 1,582 Three Months Ended Six Months Ended June 30, 2014 June 30, 2014 Average Recorded Investment Interest Income Recognized Average Recorded Investment Interest Income Recognized (Dollars in thousands) With no related allowance recorded Commercial and industrial $ 4,449 $ 60 $ 4,774 $ 123 Commercial real estate 16,216 246 16,342 490 Small business 1,051 16 1,076 32 Residential real estate 2,415 24 2,426 50 Home equity 4,431 51 4,465 103 Other consumer 363 6 374 13 Subtotal 28,925 403 29,457 811 With an allowance recorded Commercial and industrial $ 2,808 $ 40 $ 2,906 $ 81 Commercial real estate 14,523 205 14,748 413 Small business 449 8 462 16 Residential real estate 13,449 132 13,563 264 Home equity 1,102 10 1,109 17 Other consumer 686 6 707 12 Subtotal 33,017 401 33,495 803 Total $ 61,942 $ 804 $ 62,952 $ 1,614 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: June 30, 2015 December 31, 2014 (Dollars in thousands) Outstanding balance $ 23,724 $ 25,279 Carrying amount $ 21,694 $ 22,315 The following table summarizes activity in the accretable yield for the PCI loan portfolio: Six Months Ended June 30 2015 2014 (Dollars in thousands) Beginning balance $ 2,974 $ 2,514 Acquisition 319 — Accretion (1,546 ) (1,055 ) Other change in expected cash flows (1) 700 2,192 Reclassification from nonaccretable difference for loans which have paid off (2) 80 194 Ending balance $ 2,527 $ 3,845 (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 interest income during the period in which the loan paid off at amount greater than originally expected.

Earnings Per Share

Earnings Per Share	6 Months Ended
	Jun. 30, 2015
Earnings Per Share [Abstract]
EARNINGS PER SHARE	EARNINGS PER SHARE Earnings per share consisted of the following components for the periods indicated: Three Months Ended Six Months Ended June 30 June 30 2015 2014 2015 2014 (Dollars in thousands, except per share data) Net income $ 17,451 $ 14,746 $ 26,910 $ 28,129 Weighted Average Shares Basic shares 26,149,593 23,897,413 25,558,016 23,858,456 Effect of dilutive securities 71,819 94,560 76,626 97,544 Diluted shares 26,221,412 23,991,973 25,634,642 23,956,000 Net income per share Basic EPS $ 0.67 $ 0.62 $ 1.05 $ 1.18 Effect of dilutive securities — (0.01 ) — (0.01 ) Diluted EPS $ 0.67 $ 0.61 $ 1.05 $ 1.17 There were no anti-dilutive options to purchase common stock or shares of performance-based restricted stock that were excluded from the calculation of diluted earnings per share during the three or six months ended June 30, 2015 and 2014.

Stock Based Compensation

Stock Based Compensation	6 Months Ended
	Jun. 30, 2015
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
STOCK BASED COMPENSATION	Time Vested Restricted Stock Awards During the six months ended June 30, 2015 , the Company made the following awards of restricted stock: Date Shares Granted Plan Grant Date Fair Value Vesting Period 2/11/2015 31,500 2005 Employee Stock Plan $ 39.42 Ratably over 5 years from grant date 2/12/2015 25,910 2005 Employee Stock Plan $ 40.03 Ratably over 5 years from grant date 3/19/2015 3,800 2005 Employee Stock Plan $ 43.56 Ratably over 5 years from grant date 4/27/2015 625 2005 Employee Stock Plan $ 41.61 At the end of 3 years from grant date 4/27/2015 1,875 2005 Employee Stock Plan $ 41.61 At the end of 5 years from grant date 5/27/2015 8,800 2010 Non-Employee Director Stock Plan $ 45.02 At the end of 5 years from grant date The fair value of the restricted stock awards is based upon the average of the high and low price at which the Company’s common stock traded on the date of grant. The holders of restricted stock awards participate fully in the rewards of stock ownership of the Company, including voting and dividend rights. Performance-Based Restricted Stock Awards On February 12, 2015, the Company granted 21,780 performance-based restricted stock awards to certain executive level employees. These performance-based restricted stock awards were issued from the 2005 Employee Stock Plan and were determined to have a grant date fair value per share of $40.03 . The number of shares to be vested will be contingent upon the Company's attainment of certain performance measures outlined in the award agreement and will be measured as of the end of the three year performance period, or December 31, 2017. These awards will be accounted for as equity awards due to the nature of these awards and the fact that these shares will not be settled in cash. The fair value of the performance-based restricted stock awards, assuming achievement at target, is based upon the average of the high and low price at which the Company’s common stock traded on the date of grant. The holders of these awards are not entitled to receive dividends or vote until the shares are vested. Stock Options The Company did not issue any awards of options to purchase shares of common stock during the six months ended June 30, 2015 .

Repurchase Agreements Disclosur

Repurchase Agreements Disclosure of Repurchase Agreements (Notes)	6 Months Ended
	Jun. 30, 2015
Repurchase Agreements [Abstract]
Repurchase Agreements, Resale Agreements, Securities Borrowed, and Securities Loaned Disclosure [Text Block]	REPURCHASE AGREEMENTS The Company can raise additional liquidity by entering into repurchase agreements at its discretion. In a security repurchase agreement transaction, the Company will generally sell a security, agreeing to repurchase either the same or substantially identical security on a specified later date, at a greater price 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. The securities underlying the agreements are delivered to counterparties as security for the repurchase obligations. Since the securities are treated as collateral and the agreement does not qualify for a full transfer of effective control, the transactions does not meet the criteria to be classified as a sale, and is 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 either deals with established firms when entering into these transactions or with customers whose agreements stipulate 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 and types of collateral at the date indicated: June 30, 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) Repurchase agreements U.S. government agency securities $ 9,962 $ — $ 8,849 $ — $ 18,811 Agency mortgage-backed securities 42,028 — 41,151 — 83,179 Agency collateralized mortgage obligations 67,450 — — — 67,450 Total borrowings $ 119,440 $ — $ 50,000 $ — $ 169,440 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 10 - Balance Sheet Offsetting .

Derivatives and Hedging Activit

Derivatives and Hedging Activities	6 Months Ended
	Jun. 30, 2015
Derivative Instruments and Hedging Activities Disclosure [Abstract]
DERIVATIVES AND HEDGING ACTIVITIES	The 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 four 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: June 30, 2015 Notional Amount Trade Date Effective Date Maturity Date Receive (Variable) Index Current Rate Received Pay Fixed Swap Rate Fair Value (Dollars in thousands) $ 25,000 16-Feb-06 28-Dec-06 28-Dec-16 3 Month LIBOR 0.29 % 5.04 % $ (1,640 ) 25,000 16-Feb-06 28-Dec-06 28-Dec-16 3 Month LIBOR 0.29 % 5.04 % (1,640 ) 25,000 9-Dec-08 10-Dec-08 10-Dec-18 3 Month LIBOR 0.28 % 2.94 % (1,356 ) $ 75,000 $ (4,636 ) December 31, 2014 Notional Amount Trade Date Effective Date Maturity Date Receive (Variable) Index Current Rate Received Pay Fixed Swap Rate 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 $2.7 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 June 30, 2015 . The Company recognized $61,000 and $122,000 of net amortization income that was an offset to interest expense related to previously terminated swaps for the three and six month periods ended June 30, 2015 and 2014 , respectively. The Company had no fair value hedges as of June 30, 2015 or December 31, 2014 . 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: Notional Amount Maturing Number of Positions (1) Less than 1 year Less than 2 years Less than 3 years Less than 4 years Thereafter Total Fair Value June 30, 2015 (Dollars in thousands) Loan level swaps Receive fixed, pay variable 177 $ 71,534 $ 43,250 $ 40,474 $ 74,605 $ 426,106 $ 655,969 $ 17,507 Pay fixed, receive variable 171 $ 71,534 $ 43,250 $ 40,474 $ 74,605 $ 426,106 $ 655,969 $ (17,538 ) Foreign exchange contracts Buys foreign currency, sells U.S. currency 16 $ 24,099 $ — $ — $ — $ — $ 24,099 $ 812 Buys U.S. currency, sells foreign currency 16 $ 24,099 $ — $ — $ — $ — $ 24,099 $ (789 ) December 31, 2014 (Dollars in thousands) Loan level swaps 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 $ 4,007 Buys U.S. currency, sells foreign currency 23 $ 57,112 $ — $ — $ — $ — $ 57,112 $ (3,984 ) (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 hedges, execute a forward TBA trade with a counterparty to hedge that market risk. Certain assumptions, including pull through rates and rate lock periods, are used in managing the existing and future 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 an increase of $157,000 and $174,000 for the three months ended June 30, 2015 and 2014 , respectively, and an increase of $184,000 and $225,000 for the six months ended June 30, 2015 and 2014 , respectively. These amounts were offset in earnings by the change in the fair value of mortgage derivatives. 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 June 30, 2015 December 31, 2014 Balance Sheet June 30, 2015 December 31, 2014 (Dollars in thousands) Derivatives designated as hedges Interest rate derivatives Other assets $ — $ — Other liabilities $ 4,636 $ 5,570 Derivatives not designated as hedges Customer Related Positions: Loan level derivatives Other assets $ 17,636 $ 18,383 Other liabilities $ 17,667 $ 18,380 Foreign exchange contracts Other assets 812 4,007 Other liabilities 789 3,984 Mortgage Derivatives Interest rate lock commitments Other assets 330 295 Other liabilities — — Forward TBA mortgage contracts Other assets — — Other liabilities — 16 Forward sales agreements Other assets — 3 Other liabilities 155 — $ 18,778 $ 22,688 $ 18,611 $ 22,380 Total $ 18,778 $ 22,688 $ 23,247 $ 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: Three Months Ended Six Months Ended June 30 June 30 2015 2014 2015 2014 (Dollars in thousands) (Dollars in thousands) Derivatives designated as hedges Gain in OCI on derivatives (effective portion), net of tax $ 382 $ 1,005 $ 464 $ 1,507 Loss reclassified from OCI into interest expense (effective portion) $ 709 $ 1,063 $ 1,415 $ 2,211 Loss reclassified from OCI into noninterest expense (loss on termination) $ — $ 1,122 $ — $ 1,122 Loss recognized in income on derivatives (ineffective portion & 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 $ (4 ) $ 15 $ 17 $ 44 Other expense (33 ) (1 ) (51 ) (2 ) Changes in fair value of mortgage derivatives Mortgage banking income (299 ) 41 $ (107 ) $ 1 Total $ (336 ) $ 55 $ (141 ) $ 43 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 $65,000 and $272,000 in exposure relating to institutional counterparties at June 30, 2015 and December 31, 2014 , respectively. The Company’s exposure relating to customer counterparties was approximately $18.3 million and $18.9 million at June 30, 2015 and December 31, 2014 , respectively. Credit exposure may be reduced by the amount of collateral pledged by the counterparty.

Balance Sheet Offsetting

Balance Sheet Offsetting	6 Months Ended
	Jun. 30, 2015
Offsetting [Abstract]
Balance Sheet Offsetting Disclosure [Text Block]	The Company does not offset fair value amounts recognized for derivative instruments or repurchase agreements. The Company does net the amount recognized for the right to reclaim cash collateral against the obligation to return cash collateral arising from derivative instruments executed with the same counterparty under a master netting arrangement. Collateral legally required to be maintained at dealer banks by the Company is monitored and adjusted as necessary. At June 30, 2015 , it was determined that no additional collateral would have to be posted to immediately settle these instruments. 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 in the Statement of Financial Position Gross Amounts Offset in the Statement of Financial Position Net Amounts Presented in the Statement of Financial Position Financial Instruments (1) Collateral Pledged (Received) Net Amount June 30, 2015 (Dollars in thousands) Derivative Assets Interest rate swaps $ — $ — $ — $ — $ — $ — Loan level derivatives 17,636 — 17,636 65 — 17,571 Customer foreign exchange contracts 812 — 812 — — 812 $ 18,448 $ — $ 18,448 $ 65 $ — $ 18,383 Derivative Liabilities Interest rate swaps $ 4,636 $ — $ 4,636 $ — $ 4,636 $ — Loan level derivatives 17,667 — 17,667 65 17,538 65 Customer foreign exchange contracts 789 — 789 — — 789 Repurchase agreements Customer repurchase agreements 119,439 — 119,439 — 119,439 — Wholesale repurchase agreements 50,000 — 50,000 — 50,000 — $ 192,531 $ — $ 192,531 $ 65 $ 191,613 $ 853 (1) Reflects offsetting derivative positions with the same counterparty. Gross Amounts Not Offset in the Statement of Financial Position Gross Amounts Recognized in the Statement of Financial Position Gross Amounts Offset in the Statement of Financial Position Net Amounts Presented in the Statement of Financial Position Financial Instruments (1) Collateral Pledged (Received) Net Amount December 31, 2014 (Dollars in thousands) Derivative Assets Interest rate swaps $ — $ — $ — $ — $ — $ — Loan level derivatives 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. The Company has agreements with certain of its derivative counterparties that contain a provision where if the Company fails to maintain its status as a well capitalized institution, then the Company could be required to terminate any outstanding derivatives with the counterparty. All liability position interest rate swap and customer loan level swap counterparties have credit-risk contingent features as of the dates indicated in the table above. In addition, derivative instruments that contain credit-risk related contingent features that are in a net liability position require the Company to assign collateral as noted in the table above.

Fair Value Measurements

Fair Value Measurements	6 Months Ended
	Jun. 30, 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 June 30, 2015 and December 31, 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 as 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 at the periods indicated were as follows: Fair Value Measurements at Reporting Date Using Balance Quoted Prices in Active Markets for Identical Assets (Level 1) Significant Other Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) June 30, 2015 (Dollars in thousands) Recurring fair value measurements Assets Trading securities $ 489 $ 489 $ — $ — Securities available for sale U.S. Government agency securities 39,726 — 39,726 $ — Agency mortgage-backed securities 230,997 — 230,997 — Agency collateralized mortgage obligations 55,202 — 55,202 — State, county, and municipal securities 4,668 — 4,668 — Single issuer trust preferred securities issued by banks and insurers 2,872 — 2,872 — Pooled trust preferred securities issued by banks and insurers 1,595 — — 1,595 Small business administration pooled securities 26,497 — 26,497 — Equity securities 13,444 13,444 — — Loans held for sale 10,728 — 10,728 — Derivative instruments 18,778 — 18,778 — Liabilities Derivative instruments 23,247 — 23,247 — Total recurring fair value measurements $ 381,749 $ 13,933 $ 366,221 $ 1,595 Nonrecurring fair value measurements Assets Collateral dependent impaired loans $ 3,824 $ — $ — $ 3,824 Other real estate owned and other foreclosed assets 5,124 — — 5,124 Total nonrecurring fair value measurements $ 8,948 $ — $ — $ 8,948 Fair Value Measurements at Reporting Date Using Balance Quoted Prices in Active Markets for Identical Assets (Level 1) Significant Other Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) 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), which were valued using pricing models and discounted cash flow methodologies, as of the dates indicated: Securities Available for Sale: (Dollars in thousands) Three Months Ended June 30, 2015 Three Months Ended June 30, 2014 Pooled Trust Preferred Securities Beginning balance $ 6,272 $ 4,967 Gains and (losses) (realized/unrealized) Included in other comprehensive income 12 184 Sales (4,679 ) — Settlements (10 ) (60 ) Ending balance $ 1,595 $ 5,091 Securities Available for Sale: (Dollars in thousands) Six Months Ended June 30, 2015 Six Months Ended June 30, 2014 Pooled Trust Preferred Securities Beginning balance $ 6,321 $ 3,841 Gains and (losses) (realized/unrealized) Included in other comprehensive income 8 1,349 Sales (4,679 ) — Settlements (55 ) (99 ) Ending balance 1,595 5,091 It is the Company’s policy to recognize the transfers between levels of the fair value hierarchy as of the end of the reporting period. 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 during the six month periods ended June 30, 2015 or 2014 . The following table sets forth certain unobservable inputs regarding the Company’s investment in securities that are classified as Level 3 for the periods indicated: June 30 December 31 June 30 December 31 June 30 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 $ 1,595 $ 6,321 Cumulative prepayment 0% - 65% 0% - 75% 2.5% 7.0% Cumulative default 5% - 100% 3% - 100% 14.9% 13.9% Loss given default 85% - 100% 85% - 100% 94.6% 96.1% Cure given default 0% - 75% 0% - 75% 63.8% 46.7% Appraisals of collateral (1) Impaired loans $ 3,824 $ 8,196 Other real estate owned and foreclosed assets $ 5,124 $ 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. 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 Carrying Value Fair Value Quoted Prices in Active Markets for Identical Assets (Level 1) Significant Other Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) June 30, 2015 (Dollars in thousands) Financial assets Securities held to maturity(a) U.S. Treasury securities $ 1,009 $ 1,070 $ — $ 1,070 $ — Agency mortgage-backed securities 158,432 162,374 — 162,374 — Agency collateralized mortgage obligations 224,994 224,125 — 224,125 — State, county, and municipal securities 225 227 — 227 — Single issuer trust preferred securities issued by banks 1,500 1,500 — 1,500 — Small business administration pooled securities 37,178 37,416 — 37,416 — Corporate debt securities 5,001 5,066 — 5,066 — Loans, net of allowance for loan losses(b) 5,379,787 5,309,323 — — 5,309,323 Financial liabilities Time certificates of deposits(c) $ 725,703 $ 727,290 $ — $ 727,290 $ — Federal Home Loan Bank borrowings(c) 108,190 108,712 — 108,712 — Customer repurchase agreements and other short-term borrowings(c) 119,439 119,439 — — 119,439 Wholesale repurchase agreements(c) 50,000 50,140 — — 50,140 Junior subordinated debentures(d) 73,576 69,375 — 69,375 — Subordinated debentures(c) 35,000 34,617 — — 34,617 Fair Value Measurements at Reporting Date Using Carrying 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, 2014 (Dollars in thousands) Financial assets 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 — Single issuer trust preferred securities issued by banks 1,500 1,477 — 1,477 — Small business administration pooled securities 9,775 10,074 — 10,074 — Corporate debt securities 5,002 5,119 — 5,119 — Loans, net of allowance for loan losses(b) 4,915,633 4,883,479 — — 4,883,479 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 analyses. (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.

Comprehensive Income_Loss

Comprehensive Income/Loss	6 Months Ended
	Jun. 30, 2015
Equity [Abstract]
COMPREHENSIVE INCOME/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): Three Months Ended June 30, 2015 Six Months Ended June 30, 2015 Pre Tax Tax (Expense) After Tax Pre Tax Tax (Expense) After Tax (Dollars in thousands) (Dollars in thousands) Change in fair value of securities available for sale $ (3,910 ) $ 1,496 $ (2,414 ) $ (1,369 ) $ 516 $ (853 ) Less: net security losses reclassified into other noninterest income (315 ) 129 (186 ) (315 ) 129 (186 ) Net change in fair value of securities available for sale (3,595 ) 1,367 (2,228 ) (1,054 ) 387 (667 ) Change in fair value of cash flow hedges (36 ) (3 ) (39 ) (603 ) 228 (375 ) Less: net cash flow hedge losses reclassified into interest on borrowings expense (1) (709 ) 288 (421 ) (1,415 ) 576 (839 ) Net change in fair value of cash flow hedges 673 (291 ) 382 812 (348 ) 464 Net unamortized gain related to defined benefit pension and other postretirement adjustments arising during the period 43 (32 ) 11 87 (50 ) 37 Less: amortization of actuarial gains 60 (24 ) 36 121 (49 ) 72 Less: amortization of prior service costs 128 (52 ) 76 152 (62 ) 90 Net change in other comprehensive income for defined benefit postretirement plans (2) 231 (108 ) 123 360 (161 ) 199 Total other comprehensive income (loss) $ (2,691 ) $ 968 $ (1,723 ) $ 118 $ (122 ) $ (4 ) Three Months Ended June 30, 2014 Six Months Ended June 30, 2014 Pre Tax Tax (Expense) After Tax Pre Tax Tax (Expense) After Tax (Dollars in thousands) (Dollars in thousands) Change in fair value of securities available for sale $ 3,904 $ (1,521 ) $ 2,383 $ 7,191 $ (2,837 ) $ 4,354 Less: net security gains (losses) reclassified into other noninterest income (20 ) 8 (12 ) 71 (29 ) 42 Net change in fair value of securities available for sale 3,924 (1,529 ) 2,395 7,120 (2,808 ) 4,312 Change in fair value of cash flow hedges (487 ) 200 (287 ) (787 ) 323 (464 ) Less: net cash flow hedge losses reclassified into interest on borrowings expense (1) (1,063 ) 434 (629 ) (2,211 ) 903 (1,308 ) Less: loss on termination of hedge reclassified into noninterest expense (1,122 ) 459 (663 ) (1,122 ) 459 (663 ) Net change in fair value of cash flow hedges 1,698 (693 ) 1,005 2,546 (1,039 ) 1,507 Net unamortized loss related to defined benefit pension and other postretirement adjustments arising during the period (80 ) 33 (47 ) (160 ) 66 (94 ) Less: amortization of actuarial losses (11 ) 4 (7 ) (22 ) 8 (14 ) Less: amortization of prior service costs 25 (10 ) 15 50 (20 ) 30 Net change in other comprehensive income for defined benefit postretirement plans (2) (66 ) 27 (39 ) (132 ) 54 (78 ) Total other comprehensive income $ 5,556 $ (2,195 ) $ 3,361 $ 9,534 $ (3,793 ) $ 5,741 (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, is being recognized in earnings through December 2018, the original maturity date of the swap. The balance of this gain has amortized to $499,000 and $643,000 at June 30, 2015 and 2014 , respectively. (2) The amortization of prior service costs is included in the computation of net periodic pension cost as disclosed in the Employee Benefit Plans footnote in the Company's Annual Report on Form 10-K for the year ended December 31, 2014 , filed with the Securities and Exchange Commission. 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 2015 (Dollars in thousands) Beginning balance: January 1, 2015 $ 3,389 $ (3,298 ) $ 571 $ (2,794 ) $ (2,132 ) Net change in other comprehensive income (loss) (667 ) 536 (72 ) 199 (4 ) Ending balance: June 30, 2015 $ 2,722 $ (2,762 ) $ 499 $ (2,595 ) $ (2,136 ) 2014 Beginning balance: January 1, 2014 $ (2,023 ) $ (5,698 ) $ 715 $ (428 ) $ (7,434 ) Net change in other comprehensive income (loss) 4,312 1,579 (72 ) (78 ) 5,741 Ending balance: June 30, 2014 $ 2,289 $ (4,119 ) $ 643 $ (506 ) $ (1,693 )

Commitments and contingencies

Commitments and contingencies	6 Months Ended
	Jun. 30, 2015
Other Commitments [Line Items]
Commitments and Contingencies Disclosure [Text Block]	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 dates indicated: June 30, 2015 December 31, 2014 (Dollars in thousands) Commitments to extend credit $ 1,954,345 $ 1,822,369 Standby letters of credit 19,151 18,516 Deferred standby letter of credit fees 114 105 Lease Commitments The Company leases office space, space for ATM locations, and certain branch locations under noncancelable operating leases. Rent expense incurred under operating leases was approximately $2.0 million for both the three months ended June 30, 2015 and 2014 , and $3.9 million and $3.8 million for the six months ended June 30, 2015 and 2014 , respectively. Renewal options ranging from 1-10 years exist for several of these leases. Rockland Trust had previously entered into a lease with a related party. The terms of that lease were substantially the same as terms for comparable transactions with unrelated parties, and required rent payments of approximately $62,000 and $124,000 for the three and six months ended June 30, 2014 , respectively. However, there were no such leases for the three and six months ended June 30, 2015 . There has been no significant change in the future minimum lease payments payable by the Company since December 31, 2014 . See the Company's Annual Report on Form 10-K for the fiscal year ended December 31, 2014 for information regarding our leases and other commitments. Other Contingencies At June 30, 2015 , Rockland Trust was involved in pending lawsuits that arose in the ordinary course of business or due to acquisitions. 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 $13.0 million and $33.0 million at June 30, 2015 and December 31, 2014 , respectively.

Investments is Low Income Housi

Investments is Low Income Housing Tax Credits Investments in Low Income Housing Tax Credits	6 Months Ended
	Jun. 30, 2015
Equity Method Investments and Joint Ventures [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 the Company's investments in low income housing projects as of the date indicated: June 30, 2015 December 31, 2014 (Dollars in thousands) Original investment value $ 39,486 $ 40,541 Current recorded investment 36,500 38,943 Unfunded liability obligation 14,677 28,004 Tax credits and benefits (1) 4,314 1,683 Amortization of investments (2) 2,912 1,089 Net income tax benefit (3) 1,402 594 (1) This amount reflects anticipated tax credits and tax benefits for the years ended December 31, 2015 and 2014 . (2) The amortization amount reduces the tax credits and benefits anticipated for the full years ended December 31, 2015 and 2014 . (3) This amount represents the net tax benefit expected to be realized for the full years ended December 31, 2015 and 2014 in determining the Company's effective tax rate.

Basis of Presentation Basis of

Basis of Presentation Basis of Presentation (Policies)	6 Months Ended
	Jun. 30, 2015
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Basis of Accounting Policy	Independent Bank Corp. (the “Company”) is a state chartered, federally registered bank holding company, incorporated in 1985. The Company is the sole stockholder of Rockland Trust Company (“Rockland Trust” or the “Bank”), a Massachusetts trust company chartered in 1907. All material intercompany balances and transactions have been eliminated in consolidation. Certain previously reported amounts may have been reclassified to conform to the current year’s presentation. The accompanying unaudited consolidated financial statements have been prepared in accordance with accounting principles generally accepted in the United States of America ("GAAP") for interim financial information and with the instructions to Form 10-Q and Article 10 of Regulation S-X. Accordingly, they do not include all of the information and footnotes required by GAAP for complete financial statements. In the opinion of management, all adjustments considered necessary for a fair presentation of the financial statements, primarily consisting of normal recurring adjustments, have been included. Operating results for the quarter ended June 30, 2015 are not necessarily indicative of the results that may be expected for the year ending December 31, 2015 or any other interim period. For further information, refer to the consolidated financial statements and footnotes thereto included in the Company’s Annual Report on Form 10-K for the year ended December 31, 2014 , filed with the Securities and Exchange Commission.

ACQUISITIONS (Tables)

ACQUISITIONS (Tables)	6 Months Ended
	Jun. 30, 2015
Business Acquisition [Line Items]
Schedule of Recognized Identified Assets Acquired and Liabilities Assumed [Table Text Block]	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
Summary of Purchased Credit Impaired Loans Associated with the business combination [Table Text Block]	The following is a summary of these PCI loans associated with the acquisition as of the date acquired: (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. Three Months Ended Six Months Ended June 30 June 30 2015 2014 2015 2014 (Dollars in thousands) Net interest income after provision for loan losses $ 53,047 $ 51,273 $ 107,455 $ 98,789 Net income 17,606 15,285 31,766 29,182

Securities (Tables)

Securities (Tables)	6 Months Ended
	Jun. 30, 2015
Investments, Debt and Equity Securities [Abstract]
Reconciliation of fair value of 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 below: June 30, 2015 December 31, 2014 Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Fair Value Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Fair Value (Dollars in thousands) Available for sale securities U.S. government agency securities $ 39,375 $ 351 $ — $ 39,726 $ 41,369 $ 139 $ (22 ) $ 41,486 Agency mortgage-backed securities 226,438 5,436 (877 ) 230,997 211,168 7,203 (693 ) 217,678 Agency collateralized mortgage obligations 55,241 477 (516 ) 55,202 63,059 599 (623 ) 63,035 State, county, and municipal securities 4,571 97 — 4,668 5,106 117 — 5,223 Single issuer trust preferred securities issued by banks 2,889 11 (28 ) 2,872 2,913 12 (16 ) 2,909 Pooled trust preferred securities issued by banks and insurers (1) 2,246 — (651 ) 1,595 7,906 195 (1,780 ) 6,321 Small business administration pooled securities 26,632 — (135 ) 26,497 — — — — Equity securities 13,201 579 (336 ) 13,444 11,572 567 (237 ) 11,902 Total available for sale securities $ 370,593 $ 6,951 $ (2,543 ) $ 375,001 $ 343,093 $ 8,832 $ (3,371 ) $ 348,554 Held to maturity securities U.S. Treasury securities $ 1,009 $ 61 $ — $ 1,070 $ 1,010 $ 63 $ — $ 1,073 Agency mortgage-backed securities 158,432 4,011 (69 ) 162,374 159,522 5,422 — 164,944 Agency collateralized mortgage obligations 224,994 1,885 (2,754 ) 224,125 198,220 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 — — 1,500 1,500 — (23 ) 1,477 Small business administration pooled securities 37,178 341 (103 ) 37,416 9,775 299 — 10,074 Corporate debt securities 5,001 65 — 5,066 5,002 117 — 5,119 Total held to maturity securities $ 428,339 $ 6,365 $ (2,926 ) $ 431,778 $ 375,453 $ 7,747 $ (3,501 ) $ 379,699 Total $ 798,932 $ 13,316 $ (5,469 ) $ 806,779 $ 718,546 $ 16,579 $ (6,872 ) $ 728,253 (1) Gross unrealized gains and gross unrealized losses include $230,000 of net non-credit related other-than-temporary impairment ("OTTI") at December 31, 2014 . There was no non-credit related OTTI at June 30, 2015 .
Schedule of contractual maturities of securities	A schedule of the contractual maturities of securities available for sale and securities held to maturity as of June 30, 2015 is presented below: Available for Sale Held to Maturity Amortized Cost Fair Value Amortized Cost Fair Value (Dollars in thousands) Due in one year or less $ — $ — $ 5,226 $ 5,293 Due after one year to five years 46,469 47,097 149 152 Due after five to ten years 92,147 92,354 29,960 30,547 Due after ten years 218,776 222,106 393,004 395,786 Total debt securities $ 357,392 $ 361,557 $ 428,339 $ 431,778 Equity securities $ 13,201 $ 13,444 $ — $ — Total $ 370,593 $ 375,001 $ 428,339 $ 431,778
Schedule of gross unrealized losses and fair value of investments	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: June 30, 2015 Less than 12 months 12 months or longer Total # of holdings Fair Value Unrealized Losses Fair Value Unrealized Losses Fair Value Unrealized Losses (Dollars in thousands) Agency mortgage-backed securities 40 $ 76,234 $ (766 ) $ 4,542 $ (180 ) $ 80,776 $ (946 ) Agency collateralized mortgage obligations 14 45,813 (329 ) 88,668 (2,941 ) 134,481 (3,270 ) Single issuer trust preferred securities issued by banks and insurers 2 2,113 (28 ) — — 2,113 (28 ) Pooled trust preferred securities issued by banks and insurers 1 — — 1,595 (651 ) 1,595 (651 ) Small business administration pooled securities 3 39,349 (238 ) — — 39,349 (238 ) Equity securities 26 2,717 (123 ) 4,330 (213 ) 7,047 (336 ) Total temporarily impaired securities 86 $ 166,226 $ (1,484 ) $ 99,135 $ (3,985 ) $ 265,361 $ (5,469 ) December 31, 2014 Less than 12 months 12 months or longer Total # of holdings Fair Value Unrealized Losses Fair Value Unrealized Losses Fair Value Unrealized Losses (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 Temorary Impairment [Table Text Block]	The following table shows the total OTTI that the Company recorded for the periods indicated: Three Months Ended Six Months Ended June 30 June 30 2015 2014 2015 2014 (Dollars in thousands) Gross change in OTTI recorded on certain investments $ — $ 196 $ 84 $ 1,029 Portion of OTTI recognized in OCI — (196 ) (84 ) (1,029 ) 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: Three Months Ended Six Months Ended June 30 June 30 2015 2014 2015 2014 (Dollars in thousands) Balance at beginning of period $ (9,997 ) $ (9,997 ) $ (9,997 ) $ (9,997 ) Add Incurred on securities not previously impaired — — — — Incurred on securities previously impaired — — — — Less Securities sold during the period 9,997 — 9,997 — 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 Los26

Loans, Allowance for Loan Losses and Credit Quality (Tables)	6 Months Ended
	Jun. 30, 2015
Loans, Allowance for Loan Losses and Credit Quality [Abstract]
Tabular disclosure of financing receivables bifuricated by type of impairment evaluation [Table Text Block]	The following tables bifurcate the amount of loans and the allowance allocated to each loan category based on the type of impairment analysis as of the periods indicated: June 30, 2015 (Dollars in thousands) Commercial and Industrial Commercial Real Estate Commercial Construction Small Business Residential Real Estate Home Equity Other Consumer Total Financing receivables ending balance: Collectively evaluated for impairment $ 867,695 $ 2,588,279 $ 278,205 $ 90,481 $ 629,556 $ 884,588 $ 15,618 $ 5,354,422 Individually evaluated for impairment $ 5,410 $ 29,562 $ 309 $ 886 $ 14,940 $ 5,895 $ 1,664 $ 58,666 Purchased credit impaired loans $ — $ 12,221 $ 178 $ — $ 8,874 $ 410 $ 11 $ 21,694 Total loans by group $ 873,105 $ 2,630,062 $ 278,692 $ 91,367 $ 653,370 $ 890,893 $ 17,293 $ 5,434,782 (1 ) December 31, 2014 (Dollars in thousands) Commercial and Industrial Commercial Real Estate Commercial Construction Small Business Residential Real Estate Home Equity Other Consumer Total 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 ) (1) The amount of net deferred fees included in the ending balance was $3.5 million and $2.8 million at June 30, 2015 and December 31, 2014 , respectively.
Summary of changes in allowance for loan losses	The following tables summarize changes in allowance for loan losses by loan category for the periods indicated: Three Months Ended June 30, 2015 (Dollars in thousands) Commercial and Industrial Commercial Real Estate Commercial Construction Small Business Residential Real Estate Home Equity Other Consumer Total Allowance for loan losses Beginning balance $ 14,557 $ 26,285 $ 4,142 $ 1,222 $ 2,726 $ 4,906 $ 677 $ 54,515 Charge-offs (473 ) (67 ) — (47 ) (17 ) (248 ) (247 ) (1,099 ) Recoveries 502 169 — 66 1 31 110 879 Provision 693 (28 ) (71 ) 7 (159 ) 182 76 700 Ending balance $ 15,279 $ 26,359 $ 4,071 $ 1,248 $ 2,551 $ 4,871 $ 616 $ 54,995 Three Months Ended June 30, 2014 (Dollars in thousands) Commercial and Industrial Commercial Real Estate Commercial Construction Small Business Residential Real Estate Home Equity Other Consumer Total Allowance for loan losses Beginning balance $ 15,601 $ 24,917 $ 3,570 $ 1,207 $ 2,829 $ 4,758 $ 747 $ 53,629 Charge-offs (470 ) (660 ) — (128 ) (326 ) (308 ) (258 ) (2,150 ) Recoveries 128 197 — 92 190 55 147 809 Provision (benefit) 670 641 187 (17 ) 186 464 119 2,250 Ending balance $ 15,929 $ 25,095 $ 3,757 $ 1,154 $ 2,879 $ 4,969 $ 755 $ 54,538 Six Months Ended June 30, 2015 (Dollars in thousands) Commercial and Industrial Commercial Real Estate Commercial Construction Small Business Residential Real Estate Home Equity Other Consumer Total Allowance for loan losses Beginning balance $ 15,573 $ 25,873 $ 3,945 $ 1,171 $ 2,834 $ 4,956 $ 748 $ 55,100 Charge-offs (1,034 ) (208 ) — (196 ) (202 ) (411 ) (573 ) (2,624 ) Recoveries 881 854 — 132 46 105 301 2,319 Provision (benefit) (141 ) (160 ) 126 141 (127 ) 221 140 200 Ending balance $ 15,279 $ 26,359 $ 4,071 $ 1,248 $ 2,551 $ 4,871 $ 616 $ 54,995 Ending balance: individually evaluated for impairment $ 310 $ 201 $ — $ 4 $ 1,337 $ 250 $ 30 $ 2,132 Ending balance: collectively evaluated for impairment $ 14,969 $ 26,158 $ 4,071 $ 1,244 $ 1,214 $ 4,621 $ 586 $ 52,863 Six Months Ended June 30, 2014 (Dollars in thousands) Commercial and Industrial Commercial Real Estate Commercial Construction Small Business Residential Real Estate Home Equity Other Consumer Total Allowance for loan losses Beginning balance $ 15,622 $ 24,541 $ 3,371 $ 1,215 $ 2,760 $ 5,036 $ 694 $ 53,239 Charge-offs (1,253 ) (3,582 ) — (396 ) (454 ) (402 ) (629 ) (6,716 ) Recoveries 207 265 — 139 190 148 314 1,263 Provision (benefit) 1,353 3,871 386 196 383 187 376 6,752 Ending balance $ 15,929 $ 25,095 $ 3,757 $ 1,154 $ 2,879 $ 4,969 $ 755 $ 54,538 Ending balance: individually evaluated for impairment $ 472 $ 292 $ — $ 45 $ 1,599 $ 273 $ 49 $ 2,730 Ending balance: collectively evaluated for impairment $ 15,457 $ 24,803 $ 3,757 $ 1,109 $ 1,280 $ 4,696 $ 706 $ 51,808
Internal risk-rating categories for the Company's commercial portfolio	The following table details the amount of outstanding principal balances relative to each of the risk-rating categories for the Company’s commercial portfolio: June 30, 2015 Category Risk Rating Commercial and Industrial Commercial Real Estate Commercial Construction Small Business Total (Dollars in thousands) Pass 1 - 6 $ 803,026 $ 2,488,514 $ 268,628 $ 87,815 $ 3,647,983 Potential weakness 7 50,448 77,276 9,530 2,790 140,044 Definite weakness-loss unlikely 8 19,540 63,069 534 684 83,827 Partial loss probable 9 91 1,203 — 78 1,372 Definite loss 10 — — — — — Total $ 873,105 $ 2,630,062 $ 278,692 $ 91,367 $ 3,873,226 December 31, 2014 Category Risk Rating Commercial and Industrial Commercial Real Estate Commercial Construction 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-loss unlikely 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
Weighted average FICO scores and the weighted average combined LTV ratio	The following table shows the weighted average FICO scores and the weighted average combined LTV ratios as of the periods indicated below: June 30, December 31, Residential portfolio FICO score (re-scored)(1) 741 739 LTV (re-valued)(2) 60.3 % 67.1 % Home equity portfolio FICO score (re-scored)(1) 764 764 LTV (re-valued)(2) 50.5 % 53.6 % (1) The average FICO scores for June 30, 2015 are based upon rescores available from May 31, 2015 and origination score data for loans booked between June 1 and June 30, 2015. The average FICO scores for December 31, 2014 are based upon rescores available from November 30, 2014 and origination score data for loans booked between December 1, 2014 and December 31, 2014. (2) The combined LTV ratios for June 30, 2015 are based upon updated automated valuations as of March 31, 2015 and origination value data for loans booked between April 1, 2015 and June 30, 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.
Summary of nonaccrual loans	The following table shows nonaccrual loans at the dates indicated: June 30, 2015 December 31, 2014 (Dollars in thousands) Commercial and industrial $ 3,767 $ 2,822 Commercial real estate 6,515 7,279 Commercial construction 309 311 Small business 198 246 Residential real estate 7,982 8,697 Home equity 7,238 8,038 Other consumer 37 — Total nonaccrual loans(1) $ 26,046 $ 27,393 (1) Included in these amounts were $5.6 million and $5.2 million of nonaccruing TDRs at June 30, 2015 and December 31, 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: June 30, 2015 (Dollars in thousands) Foreclosed residential real estate property held by the creditor $ 1,390 Recorded investment in mortgage loans collateralized by residential real estate property that are in the process of foreclosure $ 2,199
Age analysis of past due financing receivables	The following table shows the age analysis of past due financing receivables as of the dates indicated: June 30, 2015 30-59 days 60-89 days 90 days or more Total Past Due Total Financing Receivables Recorded Investment >90 Days and Accruing Number of Loans Principal Balance Number of Loans Principal Balance Number of Loans Principal Balance Number of Loans Principal Balance Current (Dollars in thousands) Loan Portfolio Commercial and industrial 11 $ 1,528 5 $ 1,423 11 $ 2,951 27 $ 5,902 $ 867,203 $ 873,105 $ — Commercial real estate 12 3,052 7 3,792 19 4,442 38 11,286 2,618,776 2,630,062 — Commercial construction — — — — 1 309 1 309 278,383 278,692 — Small business 7 143 2 2 9 85 18 230 91,137 91,367 — Residential real estate 8 1,030 5 855 25 3,780 38 5,665 647,705 653,370 104 Home equity 16 688 11 692 18 1,582 45 2,962 887,931 890,893 — Other consumer 25 150 8 10 7 17 40 177 17,116 17,293 — Total 79 $ 6,591 38 $ 6,774 90 $ 13,166 207 $ 26,531 $ 5,408,251 $ 5,434,782 $ 104 December 31, 2014 30-59 days 60-89 days 90 days or more Total Past Due Total Financing Receivables Recorded Investment >90 Days and Accruing Number of Loans Principal Balance Number of Loans Principal Balance Number of Loans Principal Balance Number of Loans Principal Balance Current (Dollars in thousands) Loan Portfolio 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 34 233 6 20 8 13 48 266 16,942 17,208 13 Total 112 $ 20,609 47 $ 4,725 110 $ 14,270 269 $ 39,604 $ 4,931,129 $ 4,970,733 $ 119
Summary of Troubled Debt Restructuring and other pertinent information	The following table shows the Company’s total TDRs and other pertinent information as of the dates indicated: June 30, 2015 December 31, 2014 (Dollars in thousands) TDRs on accrual status $ 36,750 $ 38,382 TDRs on nonaccrual 5,623 5,248 Total TDRs $ 42,373 $ 43,630 Amount of specific reserves included in the allowance for loan losses associated with TDRs: $ 1,872 $ 2,004 Additional commitments to lend to a borrower who has been a party to a TDR: $ 1,522 $ 1,400
Change in investment recorded subsequent to modifications	The following table shows the modifications which occurred during the periods indicated and the change in the recorded investment subsequent to the modifications occurring: Three Months Ended Six Months Ended June 30, 2015 June 30, 2015 Number of Contracts Pre-Modification Outstanding Recorded Investment Post-Modification Outstanding Recorded Investment (1) Number of Contracts Pre-Modification Outstanding Recorded Investment Post-Modification Outstanding Recorded Investment (1) (Dollars in thousands) Troubled debt restructurings Commercial and industrial 7 $ 1,197 $ 1,197 10 $ 1,353 $ 1,353 Commercial real estate 4 2,071 2,071 5 2,310 2,310 Small business 3 116 116 5 166 166 Residential real estate — — — 3 157 157 Home equity 1 31 31 3 215 215 Total 15 $ 3,415 $ 3,415 26 $ 4,201 $ 4,201 Three Months Ended Six Months Ended June 30, 2014 June 30, 2014 Number of Contracts Pre-Modification Outstanding Recorded Investment Post-Modification Outstanding Recorded Investment (1) Number of Contracts Pre-Modification Outstanding Recorded Investment Post-Modification Outstanding Recorded Investment (1) (Dollars in thousands) Troubled debt restructurings Commercial and industrial 3 $ 399 $ 399 12 $ 824 $ 824 Commercial real estate — — — 6 1,882 1,882 Small business 1 117 117 2 174 174 Residential real estate — — — 2 542 513 Home equity 3 520 520 4 616 616 Other consumer — — — 1 8 8 Total 7 $ 1,036 $ 1,036 27 $ 4,046 $ 4,017 (1) The post-modification balances represent the balance of the loan on the date of modifications. These amounts may show an increase when modifications include a capitalization of interest.
Post modification balance of Troubled Debt Restructuring	The following table shows the Company’s post-modification balance of TDRs listed by type of modification during the period indicated: Three Months Ended June 30 Six Months Ended June 30 2015 2014 2015 2014 (Dollars in thousands) (Dollars in thousands) Extended maturity $ 1,005 $ 633 $ 1,648 $ 1,640 Adjusted interest rate — — — 728 Combination rate & maturity 2,410 403 2,523 1,670 Court ordered concession — — 30 8 Total $ 3,415 $ 1,036 $ 4,201 $ 4,046
Troubled Debt Restructurings that subsequently defaulted	The following table shows loans that have been modified during the past twelve months which have subsequently defaulted during the periods indicated. Three Months Ended June 30 2015 2014 Number of Contracts Recorded Investment Number of Contracts Recorded Investment (Dollars in thousands) Troubled debt restructurings that subsequently defaulted Commercial real estate — $ — 1 $ 73 Residential real estate — — 1 136 — $ — 2 $ 209 Six Months Ended June 30 2015 2014 Number of Contracts Recorded Investment Number of Contracts Recorded Investment (Dollars in thousands) Troubled debt restructurings that subsequently defaulted Commercial real estate 2 $ 880 2 $ 249 Commercial and industrial 3 339 — — Residential real estate — — 1 136 5 $ 1,219 3 $ 385
Impaired loans by loan portfolio	The tables below set forth information regarding the Company’s impaired loans by loan portfolio at the dates indicated: June 30, 2015 Recorded Investment Unpaid Principal Balance Related Allowance (Dollars in thousands) With no related allowance recorded Commercial and industrial $ 2,785 $ 2,914 $ — Commercial real estate 14,379 15,352 — Commercial construction 309 310 — Small business 452 492 — Residential real estate 3,357 3,469 — Home equity 4,565 4,621 — Other consumer 1,199 1,208 — Subtotal 27,046 28,366 — With an allowance recorded Commercial and industrial $ 2,625 $ 2,769 $ 310 Commercial real estate 15,183 15,332 201 Small business 434 462 4 Residential real estate 11,583 12,677 1,337 Home equity 1,330 1,467 250 Other consumer 465 479 30 Subtotal 31,620 33,186 2,132 Total $ 58,666 $ 61,552 $ 2,132 December 31, 2014 Recorded Investment Unpaid Principal Balance Related Allowance (Dollars in thousands) With no related allowance recorded Commercial and industrial $ 3,005 $ 3,278 $ — Commercial real estate 15,982 17,164 — Commercial construction 311 311 — Small business 692 718 — Residential real estate 2,439 2,502 — Home equity 4,169 4,221 — Other consumer 338 341 — Subtotal 26,936 28,535 — With an allowance recorded Commercial and industrial $ 1,649 $ 1,859 $ 412 Commercial real estate 14,747 15,514 197 Small business 396 458 7 Residential real estate 12,616 13,727 1,500 Home equity 1,161 1,264 262 Other consumer 530 530 38 Subtotal 31,099 33,352 2,416 Total $ 58,035 $ 61,887 $ 2,416
Interest income recognized on impaired loans	The following tables set forth information regarding interest income recognized on impaired loans, by portfolio, for the periods indicated: Three Months Ended Six Months Ended June 30, 2015 June 30, 2015 Average Recorded Investment Interest Income Recognized Average Recorded Investment Interest Income Recognized (Dollars in thousands) With no related allowance recorded Commercial and industrial $ 2,842 $ 40 $ 2,927 $ 81 Commercial real estate 14,467 227 15,044 471 Commercial construction 310 3 311 7 Small business 459 6 471 13 Residential real estate 3,385 40 3,403 79 Home equity 4,585 51 4,613 102 Other consumer 1,204 6 1,074 11 Subtotal 27,252 373 27,843 764 With an allowance recorded Commercial and industrial $ 2,712 $ 31 $ 2,749 $ 62 Commercial real estate 15,231 204 15,292 406 Small business 442 7 453 15 Residential real estate 11,608 128 11,662 295 Home equity 1,336 16 1,345 31 Other consumer 472 5 490 9 Subtotal 31,801 391 31,991 818 Total $ 59,053 $ 764 $ 59,834 $ 1,582 Three Months Ended Six Months Ended June 30, 2014 June 30, 2014 Average Recorded Investment Interest Income Recognized Average Recorded Investment Interest Income Recognized (Dollars in thousands) With no related allowance recorded Commercial and industrial $ 4,449 $ 60 $ 4,774 $ 123 Commercial real estate 16,216 246 16,342 490 Small business 1,051 16 1,076 32 Residential real estate 2,415 24 2,426 50 Home equity 4,431 51 4,465 103 Other consumer 363 6 374 13 Subtotal 28,925 403 29,457 811 With an allowance recorded Commercial and industrial $ 2,808 $ 40 $ 2,906 $ 81 Commercial real estate 14,523 205 14,748 413 Small business 449 8 462 16 Residential real estate 13,449 132 13,563 264 Home equity 1,102 10 1,109 17 Other consumer 686 6 707 12 Subtotal 33,017 401 33,495 803 Total $ 61,942 $ 804 $ 62,952 $ 1,614
Certain Loans Acquired In Transfer Accounted For As Debt Securities Acquired During Period	The following table displays certain information pertaining to PCI loans at the dates indicated: June 30, 2015 December 31, 2014 (Dollars in thousands) Outstanding balance $ 23,724 $ 25,279 Carrying amount $ 21,694 $ 22,315
Certain Loans Acquired in Transfer Accounted for as Debt Securities, Accretable Yield Movement Schedule	The following table summarizes activity in the accretable yield for the PCI loan portfolio: Six Months Ended June 30 2015 2014 (Dollars in thousands) Beginning balance $ 2,974 $ 2,514 Acquisition 319 — Accretion (1,546 ) (1,055 ) Other change in expected cash flows (1) 700 2,192 Reclassification from nonaccretable difference for loans which have paid off (2) 80 194 Ending balance $ 2,527 $ 3,845 (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 interest income during the period in which the loan paid off at amount greater than originally expected.

Earnings Per Share (Tables)

Earnings Per Share (Tables)	6 Months Ended
	Jun. 30, 2015
Earnings Per Share [Abstract]
Summary of earnings per share	Earnings per share consisted of the following components for the periods indicated: Three Months Ended Six Months Ended June 30 June 30 2015 2014 2015 2014 (Dollars in thousands, except per share data) Net income $ 17,451 $ 14,746 $ 26,910 $ 28,129 Weighted Average Shares Basic shares 26,149,593 23,897,413 25,558,016 23,858,456 Effect of dilutive securities 71,819 94,560 76,626 97,544 Diluted shares 26,221,412 23,991,973 25,634,642 23,956,000 Net income per share Basic EPS $ 0.67 $ 0.62 $ 1.05 $ 1.18 Effect of dilutive securities — (0.01 ) — (0.01 ) Diluted EPS $ 0.67 $ 0.61 $ 1.05 $ 1.17

Stock Based Compensation (Table

Stock Based Compensation (Tables)	6 Months Ended
	Jun. 30, 2015
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Restricted stock compensation footnote	During the six months ended June 30, 2015 , the Company made the following awards of restricted stock: Date Shares Granted Plan Grant Date Fair Value Vesting Period 2/11/2015 31,500 2005 Employee Stock Plan $ 39.42 Ratably over 5 years from grant date 2/12/2015 25,910 2005 Employee Stock Plan $ 40.03 Ratably over 5 years from grant date 3/19/2015 3,800 2005 Employee Stock Plan $ 43.56 Ratably over 5 years from grant date 4/27/2015 625 2005 Employee Stock Plan $ 41.61 At the end of 3 years from grant date 4/27/2015 1,875 2005 Employee Stock Plan $ 41.61 At the end of 5 years from grant date 5/27/2015 8,800 2010 Non-Employee Director Stock Plan $ 45.02 At the end of 5 years from grant date

Repurchase Agreements Repurchas

Repurchase Agreements Repurchase Agreements (Tables)	6 Months Ended
	Jun. 30, 2015
Repurchase Agreements [Abstract]
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 and types of collateral at the date indicated: June 30, 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) Repurchase agreements U.S. government agency securities $ 9,962 $ — $ 8,849 $ — $ 18,811 Agency mortgage-backed securities 42,028 — 41,151 — 83,179 Agency collateralized mortgage obligations 67,450 — — — 67,450 Total borrowings $ 119,440 $ — $ 50,000 $ — $ 169,440

Derivatives and Hedging Activ30

Derivatives and Hedging Activities (Tables)	6 Months Ended
	Jun. 30, 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: June 30, 2015 Notional Amount Trade Date Effective Date Maturity Date Receive (Variable) Index Current Rate Received Pay Fixed Swap Rate Fair Value (Dollars in thousands) $ 25,000 16-Feb-06 28-Dec-06 28-Dec-16 3 Month LIBOR 0.29 % 5.04 % $ (1,640 ) 25,000 16-Feb-06 28-Dec-06 28-Dec-16 3 Month LIBOR 0.29 % 5.04 % (1,640 ) 25,000 9-Dec-08 10-Dec-08 10-Dec-18 3 Month LIBOR 0.28 % 2.94 % (1,356 ) $ 75,000 $ (4,636 ) December 31, 2014 Notional Amount Trade Date Effective Date Maturity Date Receive (Variable) Index Current Rate Received Pay Fixed Swap Rate 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: Notional Amount Maturing Number of Positions (1) Less than 1 year Less than 2 years Less than 3 years Less than 4 years Thereafter Total Fair Value June 30, 2015 (Dollars in thousands) Loan level swaps Receive fixed, pay variable 177 $ 71,534 $ 43,250 $ 40,474 $ 74,605 $ 426,106 $ 655,969 $ 17,507 Pay fixed, receive variable 171 $ 71,534 $ 43,250 $ 40,474 $ 74,605 $ 426,106 $ 655,969 $ (17,538 ) Foreign exchange contracts Buys foreign currency, sells U.S. currency 16 $ 24,099 $ — $ — $ — $ — $ 24,099 $ 812 Buys U.S. currency, sells foreign currency 16 $ 24,099 $ — $ — $ — $ — $ 24,099 $ (789 ) December 31, 2014 (Dollars in thousands) Loan level swaps 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 $ 4,007 Buys U.S. currency, sells foreign currency 23 $ 57,112 $ — $ — $ — $ — $ 57,112 $ (3,984 ) (1) The Company may enter
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 June 30, 2015 December 31, 2014 Balance Sheet June 30, 2015 December 31, 2014 (Dollars in thousands) Derivatives designated as hedges Interest rate derivatives Other assets $ — $ — Other liabilities $ 4,636 $ 5,570 Derivatives not designated as hedges Customer Related Positions: Loan level derivatives Other assets $ 17,636 $ 18,383 Other liabilities $ 17,667 $ 18,380 Foreign exchange contracts Other assets 812 4,007 Other liabilities 789 3,984 Mortgage Derivatives Interest rate lock commitments Other assets 330 295 Other liabilities — — Forward TBA mortgage contracts Other assets — — Other liabilities — 16 Forward sales agreements Other assets — 3 Other liabilities 155 — $ 18,778 $ 22,688 $ 18,611 $ 22,380 Total $ 18,778 $ 22,688 $ 23,247 $ 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: Three Months Ended Six Months Ended June 30 June 30 2015 2014 2015 2014 (Dollars in thousands) (Dollars in thousands) Derivatives designated as hedges Gain in OCI on derivatives (effective portion), net of tax $ 382 $ 1,005 $ 464 $ 1,507 Loss reclassified from OCI into interest expense (effective portion) $ 709 $ 1,063 $ 1,415 $ 2,211 Loss reclassified from OCI into noninterest expense (loss on termination) $ — $ 1,122 $ — $ 1,122 Loss recognized in income on derivatives (ineffective portion & 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 $ (4 ) $ 15 $ 17 $ 44 Other expense (33 ) (1 ) (51 ) (2 ) Changes in fair value of mortgage derivatives Mortgage banking income (299 ) 41 $ (107 ) $ 1 Total $ (336 ) $ 55 $ (141 ) $ 43

Asset & Liability Derivative Po

Asset & Liability Derivative Positions & the Potential Effect of Netting Arrangements - Current Quarter (Tables)	6 Months Ended
	Jun. 30, 2015
Offsetting [Abstract]
Offsetting Assets [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 in the Statement of Financial Position Gross Amounts Offset in the Statement of Financial Position Net Amounts Presented in the Statement of Financial Position Financial Instruments (1) Collateral Pledged (Received) Net Amount June 30, 2015 (Dollars in thousands) Derivative Assets Interest rate swaps $ — $ — $ — $ — $ — $ — Loan level derivatives 17,636 — 17,636 65 — 17,571 Customer foreign exchange contracts 812 — 812 — — 812 $ 18,448 $ — $ 18,448 $ 65 $ — $ 18,383 Derivative Liabilities Interest rate swaps $ 4,636 $ — $ 4,636 $ — $ 4,636 $ — Loan level derivatives 17,667 — 17,667 65 17,538 65 Customer foreign exchange contracts 789 — 789 — — 789 Repurchase agreements Customer repurchase agreements 119,439 — 119,439 — 119,439 — Wholesale repurchase agreements 50,000 — 50,000 — 50,000 — $ 192,531 $ — $ 192,531 $ 65 $ 191,613 $ 853 (1) Reflects offsetting derivative positions with the same counterparty. Gross Amounts Not Offset in the Statement of Financial Position Gross Amounts Recognized in the Statement of Financial Position Gross Amounts Offset in the Statement of Financial Position Net Amounts Presented in the Statement of Financial Position Financial Instruments (1) Collateral Pledged (Received) Net Amount December 31, 2014 (Dollars in thousands) Derivative Assets Interest rate swaps $ — $ — $ — $ — $ — $ — Loan level derivatives 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.

Fair Value Measurements (Tables

Fair Value Measurements (Tables)	6 Months Ended
	Jun. 30, 2015
Fair Value Disclosures [Abstract]
Assets and liabilities measured at fair value on a recurring basis	Assets and liabilities measured at fair value at the periods indicated were as follows: Fair Value Measurements at Reporting Date Using Balance Quoted Prices in Active Markets for Identical Assets (Level 1) Significant Other Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) June 30, 2015 (Dollars in thousands) Recurring fair value measurements Assets Trading securities $ 489 $ 489 $ — $ — Securities available for sale U.S. Government agency securities 39,726 — 39,726 $ — Agency mortgage-backed securities 230,997 — 230,997 — Agency collateralized mortgage obligations 55,202 — 55,202 — State, county, and municipal securities 4,668 — 4,668 — Single issuer trust preferred securities issued by banks and insurers 2,872 — 2,872 — Pooled trust preferred securities issued by banks and insurers 1,595 — — 1,595 Small business administration pooled securities 26,497 — 26,497 — Equity securities 13,444 13,444 — — Loans held for sale 10,728 — 10,728 — Derivative instruments 18,778 — 18,778 — Liabilities Derivative instruments 23,247 — 23,247 — Total recurring fair value measurements $ 381,749 $ 13,933 $ 366,221 $ 1,595 Nonrecurring fair value measurements Assets Collateral dependent impaired loans $ 3,824 $ — $ — $ 3,824 Other real estate owned and other foreclosed assets 5,124 — — 5,124 Total nonrecurring fair value measurements $ 8,948 $ — $ — $ 8,948 Fair Value Measurements at Reporting Date Using Balance Quoted Prices in Active Markets for Identical Assets (Level 1) Significant Other Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) 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 for all assets and liabilities measured at fair value on a recurring basis	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), which were valued using pricing models and discounted cash flow methodologies, as of the dates indicated: Securities Available for Sale: (Dollars in thousands) Three Months Ended June 30, 2015 Three Months Ended June 30, 2014 Pooled Trust Preferred Securities Beginning balance $ 6,272 $ 4,967 Gains and (losses) (realized/unrealized) Included in other comprehensive income 12 184 Sales (4,679 ) — Settlements (10 ) (60 ) Ending balance $ 1,595 $ 5,091
Investments in securities that are classified as level 3	The following table sets forth certain unobservable inputs regarding the Company’s investment in securities that are classified as Level 3 for the periods indicated: June 30 December 31 June 30 December 31 June 30 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 $ 1,595 $ 6,321 Cumulative prepayment 0% - 65% 0% - 75% 2.5% 7.0% Cumulative default 5% - 100% 3% - 100% 14.9% 13.9% Loss given default 85% - 100% 85% - 100% 94.6% 96.1% Cure given default 0% - 75% 0% - 75% 63.8% 46.7% Appraisals of collateral (1) Impaired loans $ 3,824 $ 8,196 Other real estate owned and foreclosed assets $ 5,124 $ 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.
The estimated fair values and related carrying amounts for assets and liabilities	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 Carrying Value Fair Value Quoted Prices in Active Markets for Identical Assets (Level 1) Significant Other Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) June 30, 2015 (Dollars in thousands) Financial assets Securities held to maturity(a) U.S. Treasury securities $ 1,009 $ 1,070 $ — $ 1,070 $ — Agency mortgage-backed securities 158,432 162,374 — 162,374 — Agency collateralized mortgage obligations 224,994 224,125 — 224,125 — State, county, and municipal securities 225 227 — 227 — Single issuer trust preferred securities issued by banks 1,500 1,500 — 1,500 — Small business administration pooled securities 37,178 37,416 — 37,416 — Corporate debt securities 5,001 5,066 — 5,066 — Loans, net of allowance for loan losses(b) 5,379,787 5,309,323 — — 5,309,323 Financial liabilities Time certificates of deposits(c) $ 725,703 $ 727,290 $ — $ 727,290 $ — Federal Home Loan Bank borrowings(c) 108,190 108,712 — 108,712 — Customer repurchase agreements and other short-term borrowings(c) 119,439 119,439 — — 119,439 Wholesale repurchase agreements(c) 50,000 50,140 — — 50,140 Junior subordinated debentures(d) 73,576 69,375 — 69,375 — Subordinated debentures(c) 35,000 34,617 — — 34,617 Fair Value Measurements at Reporting Date Using Carrying 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, 2014 (Dollars in thousands) Financial assets 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 — Single issuer trust preferred securities issued by banks 1,500 1,477 — 1,477 — Small business administration pooled securities 9,775 10,074 — 10,074 — Corporate debt securities 5,002 5,119 — 5,119 — Loans, net of allowance for loan losses(b) 4,915,633 4,883,479 — — 4,883,479 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 analyses. (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.

Comprehensive Income_Loss (Tabl

Comprehensive Income/Loss (Tables)	6 Months Ended
	Jun. 30, 2015
Equity [Abstract]
Comprehensive income	comprehensive income (loss): Three Months Ended June 30, 2015 Six Months Ended June 30, 2015 Pre Tax Tax (Expense) After Tax Pre Tax Tax (Expense) After Tax (Dollars in thousands) (Dollars in thousands) Change in fair value of securities available for sale $ (3,910 ) $ 1,496 $ (2,414 ) $ (1,369 ) $ 516 $ (853 ) Less: net security losses reclassified into other noninterest income (315 ) 129 (186 ) (315 ) 129 (186 ) Net change in fair value of securities available for sale (3,595 ) 1,367 (2,228 ) (1,054 ) 387 (667 ) Change in fair value of cash flow hedges (36 ) (3 ) (39 ) (603 ) 228 (375 ) Less: net cash flow hedge losses reclassified into interest on borrowings expense (1) (709 ) 288 (421 ) (1,415 ) 576 (839 ) Net change in fair value of cash flow hedges 673 (291 ) 382 812 (348 ) 464 Net unamortized gain related to defined benefit pension and other postretirement adjustments arising during the period 43 (32 ) 11 87 (50 ) 37 Less: amortization of actuarial gains 60 (24 ) 36 121 (49 ) 72 Less: amortization of prior service costs 128 (52 ) 76 152 (62 ) 90 Net change in other comprehensive income for defined benefit postretirement plans (2) 231 (108 ) 123 360 (161 ) 199 Total other comprehensive income (loss) $ (2,691 ) $ 968 $ (1,723 ) $ 118 $ (122 ) $ (4 ) Three Months Ended June 30, 2014 Six Months Ended June 30, 2014 Pre Tax Tax (Expense) After Tax Pre Tax Tax (Expense) After Tax (Dollars in thousands) (Dollars in thousands) Change in fair value of securities available for sale $ 3,904 $ (1,521 ) $ 2,383 $ 7,191 $ (2,837 ) $ 4,354 Less: net security gains (losses) reclassified into other noninterest income (20 ) 8 (12 ) 71 (29 ) 42 Net change in fair value of securities available for sale 3,924 (1,529 ) 2,395 7,120 (2,808 ) 4,312 Change in fair value of cash flow hedges (487 ) 200 (287 ) (787 ) 323 (464 ) Less: net cash flow hedge losses reclassified into interest on borrowings expense (1) (1,063 ) 434 (629 ) (2,211 ) 903 (1,308 ) Less: loss on termination of hedge reclassified into noninterest expense (1,122 ) 459 (663 ) (1,122 ) 459 (663 ) Net change in fair value of cash flow hedges 1,698 (693 ) 1,005 2,546 (1,039 ) 1,507 Net unamortized loss related to defined benefit pension and other postretirement adjustments arising during the period (80 ) 33 (47 ) (160 ) 66 (94 ) Less: amortization of actuarial losses (11 ) 4 (7 ) (22 ) 8 (14 ) Less: amortization of prior service costs 25 (10 ) 15 50 (20 ) 30 Net change in other comprehensive income for defined benefit postretirement plans (2) (66 ) 27 (39 ) (132 ) 54 (78 ) Total other comprehensive income $ 5,556 $ (2,195 ) $ 3,361 $ 9,534 $ (3,793 ) $ 5,741 (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, is being recognized in earnings through December 2018, the original maturity date of the swap. The balance of this gain has amortized to $499,000 and $643,000 at June 30, 2015 and 2014 , respectively. (2) The amortization of prior service costs is included in the computation of net periodic pension cost as disclosed in the Employee Benefit Plans footnote in the Company's Annual Report on Form 10-K for the year ended December 31, 2014 , filed with the Securities and Exchange Commission.
Company's accumulated other comprehensive 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 2015 (Dollars in thousands) Beginning balance: January 1, 2015 $ 3,389 $ (3,298 ) $ 571 $ (2,794 ) $ (2,132 ) Net change in other comprehensive income (loss) (667 ) 536 (72 ) 199 (4 ) Ending balance: June 30, 2015 $ 2,722 $ (2,762 ) $ 499 $ (2,595 ) $ (2,136 ) 2014 Beginning balance: January 1, 2014 $ (2,023 ) $ (5,698 ) $ 715 $ (428 ) $ (7,434 ) Net change in other comprehensive income (loss) 4,312 1,579 (72 ) (78 ) 5,741 Ending balance: June 30, 2014 $ 2,289 $ (4,119 ) $ 643 $ (506 ) $ (1,693 )

Commitments and Contingencies (

Commitments and Contingencies (Tables)	6 Months Ended
	Jun. 30, 2015
Commitments and Contingencies Disclosure [Abstract]
Schedule of Fair Value, Off-balance Sheet Risks [Table Text Block]	The following table summarizes the above financial instruments at the dates indicated: June 30, 2015 December 31, 2014 (Dollars in thousands) Commitments to extend credit $ 1,954,345 $ 1,822,369 Standby letters of credit 19,151 18,516 Deferred standby letter of credit fees 114 105

Investments is Low Income Hou35

Investments is Low Income Housing Tax Credits Investements in Low Income Housing Tax Credits (Tables)	6 Months Ended
	Jun. 30, 2015
Equity Method Investments and Joint Ventures [Abstract]
Investments in Low Income Housing Projects [Table Text Block]	The following table presents the Company's investments in low income housing projects as of the date indicated: June 30, 2015 December 31, 2014 (Dollars in thousands) Original investment value $ 39,486 $ 40,541 Current recorded investment 36,500 38,943 Unfunded liability obligation 14,677 28,004 Tax credits and benefits (1) 4,314 1,683 Amortization of investments (2) 2,912 1,089 Net income tax benefit (3) 1,402 594 (1) This amount reflects anticipated tax credits and tax benefits for the years ended December 31, 2015 and 2014 . (2) The amortization amount reduces the tax credits and benefits anticipated for the full years ended December 31, 2015 and 2014 . (3) This amount represents the net tax benefit expected to be realized for the full years ended December 31, 2015 and 2014 in determining the Company's effective tax rate.

ACQUISITIONS - Estimated FV of

ACQUISITIONS - Estimated FV of Assets Acquired & Liab Assumed(Details) - USD ($) $ in Thousands	Jun. 30, 2015	Feb. 20, 2015	Dec. 31, 2014
Assets
Goodwill	$ 201,083		$ 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 PCI Loans (Details

ACQUISITIONS PCI Loans (Details 1) - USD ($) $ in Thousands	Jun. 30, 2015	Feb. 20, 2015	Dec. 31, 2014	Jun. 30, 2014	Dec. 31, 2013
Business Acquisition [Line Items]
Interest component of expected cash flows	$ (2,527)		$ (2,974)	$ (3,845)	$ (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 Selected Pro Forma

ACQUISITIONS Selected Pro Forma Results (Details 2) - Peoples Federal Bancshares, Inc [Member] - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Business Acquisition [Line Items]
Net interest income after provision for loan losses	$ 53,047	$ 51,273	$ 107,455	$ 98,789
Net income	$ 17,606	$ 15,285	$ 31,766	$ 29,182

ACQUISITIONS (Details Textual)

ACQUISITIONS (Details Textual) - USD ($)	Feb. 20, 2015	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Business Acquisition [Line Items]
Acquisition Related Costs		$ 271,000	$ 0	$ 10,501,000	$ 77,000
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	$ 141,800,000
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	$ 55,400,000
Consideration Transferred, Equity Interests Issued and Issuable	$ 86,400,000
Increase in acquirer outstanding shares	2,052,137
Acquisition Related Costs		271,000,000		10,500,000
Loans acquired	$ 463,927,000
Combination of INDB and Peoples Federal Bancshares, Inc [Member]
Business Acquisition [Line Items]
Acquisition Related Costs		$ 271,000		$ 16,700,000

Securities (Reconciliation of f

Securities (Reconciliation of fair value of securities) (Details) - Fair Value Hierarchy [Domain] - Fair Value, Measurement Frequency [Domain] - Fair Value, Option, Eligible Item or Group [Domain] - Asset Class [Domain] - USD ($) $ in Thousands	Jun. 30, 2015	Dec. 31, 2014
Reconciliation of fair value of securities
Available for sale Securities, Amortized Cost	$ 370,593	$ 343,093
Available-for-sale Debt Securities, Accumulated Gross Unrealized Gain, before Tax	6,951	8,832
Available-for-sale Debt Securities, Accumulated Gross Unrealized Loss, before Tax	(2,543)	(3,371)
Available-for-sale Securities	375,001	348,554
Held to maturity Securities, Amortized Cost	428,339	375,453
Held-to-maturity Securities, Accumulated Unrecognized Holding Gain	6,365	7,747
Held-to-maturity Securities, Accumulated Unrecognized Holding Loss	(2,926)	(3,501)
Held to Maturity, Fair Value, Total	431,778	379,699
Amortized Cost	798,932	718,546
Gross Unrealized Gains	13,316	16,579
Unrealized Losses Other	(5,469)	(6,872)
Fair Value	806,779	728,253
U. S. Government Agency Securities [Member]
Reconciliation of fair value of securities
Available for sale Securities, Amortized Cost	39,375	41,369
Available-for-sale Debt Securities, Accumulated Gross Unrealized Gain, before Tax	351	139
Available-for-sale Debt Securities, Accumulated Gross Unrealized Loss, before Tax	0	(22)
Available-for-sale Securities	39,726	41,486
U.S. Treasury securities
Reconciliation of fair value of securities
Held to maturity Securities, Amortized Cost	1,009	1,010
Held-to-maturity Securities, Accumulated Unrecognized Holding Gain	61	63
Held-to-maturity Securities, Accumulated Unrecognized Holding Loss	0	0
Held to Maturity, Fair Value, Total	1,070	1,073
Agency mortgage-backed securities
Reconciliation of fair value of securities
Available for sale Securities, Amortized Cost	226,438	211,168
Available-for-sale Debt Securities, Accumulated Gross Unrealized Gain, before Tax	5,436	7,203
Available-for-sale Debt Securities, Accumulated Gross Unrealized Loss, before Tax	(877)	(693)
Available-for-sale Securities	230,997	217,678
Held to maturity Securities, Amortized Cost	158,432	159,522
Held-to-maturity Securities, Accumulated Unrecognized Holding Gain	4,011	5,422
Held-to-maturity Securities, Accumulated Unrecognized Holding Loss	(69)	0
Held to Maturity, Fair Value, Total	162,374	164,944
Agency Collateralized Mortgage Obligations [Member]
Reconciliation of fair value of securities
Available for sale Securities, Amortized Cost	55,241	63,059
Available-for-sale Debt Securities, Accumulated Gross Unrealized Gain, before Tax	477	599
Available-for-sale Debt Securities, Accumulated Gross Unrealized Loss, before Tax	(516)	(623)
Available-for-sale Securities	55,202	63,035
Held to maturity Securities, Amortized Cost	224,994	198,220
Held-to-maturity Securities, Accumulated Unrecognized Holding Gain	1,885	1,842
Held-to-maturity Securities, Accumulated Unrecognized Holding Loss	(2,754)	(3,478)
Held to Maturity, Fair Value, Total	224,125	196,584
State, County, and Municipal Securities [Member]
Reconciliation of fair value of securities
Available for sale Securities, Amortized Cost	4,571	5,106
Available-for-sale Debt Securities, Accumulated Gross Unrealized Gain, before Tax	97	117
Available-for-sale Debt Securities, Accumulated Gross Unrealized Loss, before Tax	0	0
Available-for-sale Securities	4,668	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
Held to Maturity, Fair Value, Total	227	428
Single Issuer Trust Preferred Securities Issued by Banks and Insurers [Member]
Reconciliation of fair value of securities
Available for sale Securities, Amortized Cost	2,889	2,913
Available-for-sale Debt Securities, Accumulated Gross Unrealized Gain, before Tax	11	12
Available-for-sale Debt Securities, Accumulated Gross Unrealized Loss, before Tax	(28)	(16)
Available-for-sale Securities	2,872	2,909
Held to maturity Securities, Amortized Cost	1,500	1,500
Held-to-maturity Securities, Accumulated Unrecognized Holding Gain	0	0
Held-to-maturity Securities, Accumulated Unrecognized Holding Loss	0	(23)
Held to Maturity, Fair Value, Total	1,500	1,477
Pooled trust preferred securities issued by banks and insurers
Reconciliation of fair value of securities
Available for sale Securities, Amortized Cost	2,246	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	(651)	(1,780)
Available-for-sale Securities	1,595	6,321
Small Business Administration Pooled Securities [Member]
Reconciliation of fair value of securities
Available for sale Securities, Amortized Cost	26,632	0
Available-for-sale Debt Securities, Accumulated Gross Unrealized Gain, before Tax		0
Available-for-sale Debt Securities, Accumulated Gross Unrealized Loss, before Tax	(135)	0
Available-for-sale Securities	26,497	0
Held to maturity Securities, Amortized Cost	37,178	9,775
Held-to-maturity Securities, Accumulated Unrecognized Holding Gain	341	299
Held-to-maturity Securities, Accumulated Unrecognized Holding Loss	(103)	0
Held to Maturity, Fair Value, Total	37,416	10,074
Equity securities
Reconciliation of fair value of securities
Available for sale Securities, Amortized Cost	13,201	11,572
Available-for-sale Debt Securities, Accumulated Gross Unrealized Gain, before Tax	579	567
Available-for-sale Debt Securities, Accumulated Gross Unrealized Loss, before Tax	(336)	(237)
Available-for-sale Securities	13,444	11,902
Corporate debt securities
Reconciliation of fair value of securities
Held to maturity Securities, Amortized Cost	5,001	5,002
Held-to-maturity Securities, Accumulated Unrecognized Holding Gain	65	117
Held-to-maturity Securities, Accumulated Unrecognized Holding Loss	0	0
Held to Maturity, Fair Value, Total	$ 5,066	$ 5,119

Securities (Schedule of Contrac

Securities (Schedule of Contractual Maturities of Securities) (Details) - USD ($) $ in Thousands	Jun. 30, 2015	Dec. 31, 2014
Available for Sale, Amortized Cost
Available for sale Securities, Amortized Cost	$ 370,593	$ 343,093
Available for Sale, Fair Value
Available for sale Securities, Fair Value, Total	375,001	348,554
Held to Maturity, Amortized Cost
Held to maturity Securities, Amortized Cost	428,339	375,453
Held to Maturity, Fair Value
Held to Maturity, Fair Value, Total	431,778	$ 379,699
Debt Securities
Available for Sale, Amortized Cost
Available for Sale, Amortized Cost, Due in one year or less	0
Available for Sale, Amortized Cost, Due after one year to five years	46,469
Available for Sale, Amortized Cost, Due after five to ten years	92,147
Available for Sale, Amortized Cost, Due after ten years	218,776
Available for sale Securities, Amortized Cost	357,392
Available for Sale, Fair Value
Available for Sale, Fair Value, Due in one year or less	0
Available for Sale, Fair Value, Due after one year to five years	47,097
Available for Sale, Fair Value, Due after five to ten years	92,354
Available for Sale, Fair Value, Due after ten years	222,106
Available for sale Securities, Fair Value, Total	361,557
Held to Maturity, Amortized Cost
Held to Maturity, Amortized Cost, Due in one year or less	5,226
Held to Maturity, Amortized Cost, Due after one year to five years	149
Held to Maturity, Amortized Cost, Due after five to ten years	29,960
Held to Maturity, Amortized Cost, Due after ten years	393,004
Held to maturity Securities, Amortized Cost	428,339
Held to Maturity, Fair Value
Held to Maturity, Fair Value, Due in one year or less	5,293
Held to Maturity, Fair Value, Due after one year to five years	152
Held to Maturity, Fair Value, Due after five to ten years	30,547
Held to Maturity, Fair Value, Due after ten years	395,786
Held to Maturity, Fair Value, Total	431,778
Equity securities
Available for Sale, Amortized Cost
Available for Sale, Amortized Cost, Marketable equity securities	13,201
Available for Sale, Fair Value
Available for Sale, Fair Value, Marketable equity securities	13,444
Held to Maturity, Amortized Cost
Held to maturity Securities, Amortized Cost	0
Held to Maturity, Fair Value
Held to Maturity, Fair Value, Total	$ 0

Securities (Unrealized Loss NOT

Securities (Unrealized Loss NOT deemed to be OTTI) (Details) $ in Thousands	Jun. 30, 2015USD ($)holding	Dec. 31, 2014USD ($)holding
Summary of gross unrealized losses and fair value of investments
No of holdings | holding	86	80
Fair value, less than 12 months	$ 166,226	$ 64,537
Unrealized loss position for available for sale and held to maturity securities in a continuous loss position for less than 12 months	(1,484)	(467)
Fair value, 12 months or longer	99,135	143,949
Unrealized loss position for available for sale and held to maturity securities in a continuous loss position for more than 12 months	(3,985)	(5,981)
Fair value, Total	265,361	208,486
Available for Sale and Held to Maturity Securities Continuous Unrealized Loss Position Aggregate Loss	$ (5,469)	$ (6,448)
U. S. Government Agency Securities [Member]
Summary of gross unrealized losses and fair value of investments
No of holdings | holding		22
Fair value, less than 12 months		$ 21,950
Unrealized loss position for available for sale and held to maturity securities in a continuous loss position for less than 12 months		(22)
Fair value, 12 months or longer		0
Unrealized loss position for available for sale and held to maturity securities in a continuous loss position for more than 12 months		0
Fair value, Total		21,950
Available for Sale and Held to Maturity Securities Continuous Unrealized Loss Position Aggregate Loss		$ (22)
Agency mortgage-backed securities
Summary of gross unrealized losses and fair value of investments
No of holdings | holding	40	17
Fair value, less than 12 months	$ 76,234	$ 3,471
Unrealized loss position for available for sale and held to maturity securities in a continuous loss position for less than 12 months	(766)	(1)
Fair value, 12 months or longer	4,542	42,222
Unrealized loss position for available for sale and held to maturity securities in a continuous loss position for more than 12 months	(180)	(692)
Fair value, Total	80,776	45,693
Available for Sale and Held to Maturity Securities Continuous Unrealized Loss Position Aggregate Loss	$ (946)	$ (693)
Agency Collateralized Mortgage Obligations [Member]
Summary of gross unrealized losses and fair value of investments
No of holdings | holding	14	14
Fair value, less than 12 months	$ 45,813	$ 35,083
Unrealized loss position for available for sale and held to maturity securities in a continuous loss position for less than 12 months	(329)	(331)
Fair value, 12 months or longer	88,668	94,974
Unrealized loss position for available for sale and held to maturity securities in a continuous loss position for more than 12 months	(2,941)	(3,770)
Fair value, Total	134,481	130,057
Available for Sale and Held to Maturity Securities Continuous Unrealized Loss Position Aggregate Loss	$ (3,270)	$ (4,101)
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	$ 2,113	$ 2,553
Unrealized loss position for available for sale and held to maturity securities in a continuous loss position for less than 12 months	(28)	(39)
Fair value, 12 months or longer	0	0
Unrealized loss position for available for sale and held to maturity securities in a continuous loss position for more than 12 months	0	0
Fair value, Total	2,113	2,553
Available for Sale and Held to Maturity Securities Continuous Unrealized Loss Position Aggregate Loss	$ (28)	$ (39)
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
Unrealized loss position for available for sale and held to maturity securities in a continuous loss position for less than 12 months	0	0
Fair value, 12 months or longer	1,595	2,681
Unrealized loss position for available for sale and held to maturity securities in a continuous loss position for more than 12 months	(651)	(1,356)
Fair value, Total	1,595	2,681
Available for Sale and Held to Maturity Securities Continuous Unrealized Loss Position Aggregate Loss	$ (651)	$ (1,356)
Equity securities
Summary of gross unrealized losses and fair value of investments
No of holdings | holding	26	23
Fair value, less than 12 months	$ 2,717	$ 1,480
Unrealized loss position for available for sale and held to maturity securities in a continuous loss position for less than 12 months	(123)	(74)
Fair value, 12 months or longer	4,330	4,072
Unrealized loss position for available for sale and held to maturity securities in a continuous loss position for more than 12 months	(213)	(163)
Fair value, Total	7,047	5,552
Available for Sale and Held to Maturity Securities Continuous Unrealized Loss Position Aggregate Loss	$ (336)	$ (237)
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	$ 39,349
Unrealized loss position for available for sale and held to maturity securities in a continuous loss position for less than 12 months	(238)
Fair value, 12 months or longer	0
Unrealized loss position for available for sale and held to maturity securities in a continuous loss position for more than 12 months	0
Fair value, Total	39,349
Available for Sale and Held to Maturity Securities Continuous Unrealized Loss Position Aggregate Loss	$ (238)

Securities (Total OTTI) (Detail

Securities (Total OTTI) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Investments, Debt and Equity Securities [Abstract]
Gross change in OTTI recorded on certain investments	$ 0	$ 196	$ (84)	$ (1,029)
Portion of OTTI recognized in OCI	0	(196)	84	1,029
Other than Temporary Impairment Losses, Investments, Portion Recognized in Earnings, Net	$ 0	$ 0	$ 0	$ 0

Securities (Summary of Cumulati

Securities (Summary of Cumulative Credit Related Component of OTTI) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Summary of cumulative credit related component of OTTI
Balance at beginning of period	$ (9,997)	$ (9,997)	$ (9,997)	$ (9,997)
Add
Incurred on securities not previously impaired	0	0	0	0
Incurred on securities previously impaired	0	0	0	0
Less
Securities sold during the period	9,997	0	9,997	0
Reclassification due to changes in Company's intent	0	0	0	0
Increases in cash flow expected to be collected	0	0	0	0
Balance at end of period	$ 0	$ (9,997)	$ 0	$ (9,997)

Securities (Details Textual) (D

Securities (Details Textual) (Details) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014	Dec. 31, 2014
Investments, Debt and Equity Securities [Abstract]
Accumulated Other Comprehensive Income (Loss), Other than Temporary Impairment, Not Credit Loss, Net of Tax, Debt Securities	$ 0		$ 0		$ 230,000
Available-For-Sale Securities - Equity Gross Realized Losses	8,000	$ 0	8,000	$ 0
Securities (Textual) [Abstract]
Callable Securities in Investment Portfolio	27,600,000		27,600,000
Pledged Financial Instruments, Not Separately Reported, Securities	317,600,000		317,600,000		340,000,000
Trading Securities	489,000		489,000		0
Investments in obligations of individual states, counties or municipalities which exceed 10% of equity	0		0		$ 0
Available-For-Sale- Securities - Equity - Gross Realized Gains	19,000	(20,000)	19,000	71,000
Available-for-Sale Securities - Fixed Income Gross Realized Losses	1,124,000	0	1,124,000	0
Available-For-Sale Securities - Fixed Income Gross Realized Gains	$ 798,000	$ 0	$ 798,000	$ 0

Loans, Allowance for Loan Los46

Loans, Allowance for Loan Losses and Credit Quality (Allowance Allocations) (Details) - USD ($) $ in Thousands	6 Months Ended	12 Months Ended
	Jun. 30, 2015	Dec. 31, 2014
Financing Receivable, Allowance for Credit Losses [Line Items]
Amortization of Deferred Loan Origination Fees, Net	$ 3,500	$ 2,800
Allowance for loans based on collective and individual evaluation of impairment by loan category
Ending Balance: Collectively Evaluated for Impairment	5,354,422	4,890,383
Ending Balance: Individually Evaluated for Impairment	58,666	58,035
Financing receivable	3,873,226	3,559,403
Ending Balance: Total Loans by Group	5,434,782	4,970,733
Receivables Acquired with Deteriorated Credit Quality [Member]
Allowance for loans based on collective and individual evaluation of impairment by loan category
Financing receivable	21,694	22,315
Commercial and Industrial [Member]
Allowance for loans based on collective and individual evaluation of impairment by loan category
Ending Balance: Collectively Evaluated for Impairment	867,695	856,185
Ending Balance: Individually Evaluated for Impairment	5,410	4,654
Financing receivable	873,105	860,839
Ending Balance: Total Loans by Group	873,105	860,839
Commercial and Industrial [Member] | Receivables Acquired with Deteriorated Credit Quality [Member]
Allowance for loans based on collective and individual evaluation of impairment by loan category
Financing receivable	0	0
Commercial Real Estate [Member]
Allowance for loans based on collective and individual evaluation of impairment by loan category
Ending Balance: Collectively Evaluated for Impairment	2,588,279	2,304,099
Ending Balance: Individually Evaluated for Impairment	29,562	30,729
Financing receivable	2,630,062	2,347,323
Ending Balance: Total Loans by Group	2,630,062	2,347,323
Commercial Real Estate [Member] | Receivables Acquired with Deteriorated Credit Quality [Member]
Allowance for loans based on collective and individual evaluation of impairment by loan category
Financing receivable	12,221	12,495
Construction Loans [Member]
Allowance for loans based on collective and individual evaluation of impairment by loan category
Ending Balance: Collectively Evaluated for Impairment	278,205	265,501
Ending Balance: Individually Evaluated for Impairment	309	311
Financing receivable	278,692	265,994
Ending Balance: Total Loans by Group	278,692	265,994
Construction Loans [Member] | Receivables Acquired with Deteriorated Credit Quality [Member]
Allowance for loans based on collective and individual evaluation of impairment by loan category
Financing receivable	178	182
Small Business [Member]
Allowance for loans based on collective and individual evaluation of impairment by loan category
Ending Balance: Collectively Evaluated for Impairment	90,481	84,159
Ending Balance: Individually Evaluated for Impairment	886	1,088
Financing receivable	91,367	85,247
Ending Balance: Total Loans by Group	91,367	85,247
Small Business [Member] | Receivables Acquired with Deteriorated Credit Quality [Member]
Allowance for loans based on collective and individual evaluation of impairment by loan category
Financing receivable	0	0
Residential Real Estate [Member]
Allowance for loans based on collective and individual evaluation of impairment by loan category
Ending Balance: Collectively Evaluated for Impairment	629,556	505,799
Ending Balance: Individually Evaluated for Impairment	14,940	15,055
Ending Balance: Total Loans by Group	653,370	530,259
Residential Real Estate [Member] | Receivables Acquired with Deteriorated Credit Quality [Member]
Allowance for loans based on collective and individual evaluation of impairment by loan category
Financing receivable	8,874	9,405
Consumer Home Equity [Member]
Allowance for loans based on collective and individual evaluation of impairment by loan category
Ending Balance: Collectively Evaluated for Impairment	884,588	858,305
Ending Balance: Individually Evaluated for Impairment	5,895	5,330
Ending Balance: Total Loans by Group	890,893	863,863
Consumer Home Equity [Member] | Receivables Acquired with Deteriorated Credit Quality [Member]
Allowance for loans based on collective and individual evaluation of impairment by loan category
Financing receivable	410	228
Consumer Other [Member]
Allowance for loans based on collective and individual evaluation of impairment by loan category
Ending Balance: Collectively Evaluated for Impairment	15,618	16,335
Ending Balance: Individually Evaluated for Impairment	1,664	868
Ending Balance: Total Loans by Group	17,293	17,208
Consumer Other [Member] | Receivables Acquired with Deteriorated Credit Quality [Member]
Allowance for loans based on collective and individual evaluation of impairment by loan category
Financing receivable	$ 11	$ 5

Loans, Allowance for Loan Los47

Loans, Allowance for Loan Losses and Credit Quality (ALLL - by category) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014	Dec. 31, 2014
Summary of changes in allowance for loan losses
Beginning Balance	$ 54,515	$ 53,629	$ 55,100	$ 53,239
Charge-offs	(1,099)	(2,150)	(2,624)	6,716
Recoveries	879	809	2,319	1,263
Provision for loan losses	700	2,250	200	6,752
Ending Balance	54,995	54,538	54,995	54,538
Ending Balance: Individually Evaluated for Impairment	2,132	2,730	2,132	2,730	$ 2,416
Ending Balance: Collectively Evaluated for Impairment	52,863	51,808	52,863	51,808
Commercial and Industrial [Member]
Summary of changes in allowance for loan losses
Beginning Balance	14,557	15,601	15,573	15,622
Charge-offs	(473)	(470)	(1,034)	1,253
Recoveries	502	128	881	207
Provision for loan losses	693	670	(141)	1,353
Ending Balance	15,279	15,929	15,279	15,929
Ending Balance: Individually Evaluated for Impairment	310	472	310	472	412
Ending Balance: Collectively Evaluated for Impairment	14,969	15,457	14,969	15,457
Commercial Real Estate [Member]
Summary of changes in allowance for loan losses
Beginning Balance	26,285	24,917	25,873	24,541
Charge-offs	(67)	(660)	(208)	3,582
Recoveries	169	197	854	265
Provision for loan losses	(28)	641	(160)	3,871
Ending Balance	26,359	25,095	26,359	25,095
Ending Balance: Individually Evaluated for Impairment	201	292	201	292	197
Ending Balance: Collectively Evaluated for Impairment	26,158	24,803	26,158	24,803
Construction Loans [Member]
Summary of changes in allowance for loan losses
Beginning Balance	4,142	3,570	3,945	3,371
Charge-offs	0	0	0	0
Recoveries	0	0	0	0
Provision for loan losses	(71)	187	126	386
Ending Balance	4,071	3,757	4,071	3,757
Ending Balance: Individually Evaluated for Impairment	0	0	0	0
Ending Balance: Collectively Evaluated for Impairment	4,071	3,757	4,071	3,757
Small Business [Member]
Summary of changes in allowance for loan losses
Beginning Balance	1,222	1,207	1,171	1,215
Charge-offs	(47)	(128)	(196)	396
Recoveries	66	92	132	139
Provision for loan losses	7	(17)	141	196
Ending Balance	1,248	1,154	1,248	1,154
Ending Balance: Individually Evaluated for Impairment	4	45	4	45	7
Ending Balance: Collectively Evaluated for Impairment	1,244	1,109	1,244	1,109
Residential Real Estate [Member]
Summary of changes in allowance for loan losses
Beginning Balance	2,726	2,829	2,834	2,760
Charge-offs	(17)	(326)	(202)	454
Recoveries	1	190	46	190
Provision for loan losses	(159)	186	(127)	383
Ending Balance	2,551	2,879	2,551	2,879
Ending Balance: Individually Evaluated for Impairment	1,337	1,599	1,337	1,599	1,500
Ending Balance: Collectively Evaluated for Impairment	1,214	1,280	1,214	1,280
Consumer Home Equity [Member]
Summary of changes in allowance for loan losses
Beginning Balance	4,906	4,758	4,956	5,036
Charge-offs	(248)	(308)	(411)	402
Recoveries	31	55	105	148
Provision for loan losses	182	464	221	187
Ending Balance	4,871	4,969	4,871	4,969
Ending Balance: Individually Evaluated for Impairment	250	273	250	273	262
Ending Balance: Collectively Evaluated for Impairment	4,621	4,696	4,621	4,696
Consumer Other [Member]
Summary of changes in allowance for loan losses
Beginning Balance	677	747	748	694
Charge-offs	(247)	(258)	(573)	629
Recoveries	110	147	301	314
Provision for loan losses	76	119	140	376
Ending Balance	616	755	616	755
Ending Balance: Individually Evaluated for Impairment	30	49	30	49	$ 38
Ending Balance: Collectively Evaluated for Impairment	$ 586	$ 706	$ 586	$ 706

Loans, Allowance for Loan Los48

Loans, Allowance for Loan Losses and Credit Quality (Internal Risk-Rating Categories for the Commercial Portfolio) (Details) - USD ($) $ in Thousands	Jun. 30, 2015	Dec. 31, 2014
Internal risk-rating categories for the Company's commercial portfolio
TOTAL	$ 3,873,226	$ 3,559,403
Commercial and Industrial [Member]
Internal risk-rating categories for the Company's commercial portfolio
TOTAL	873,105	860,839
Commercial Real Estate [Member]
Internal risk-rating categories for the Company's commercial portfolio
TOTAL	2,630,062	2,347,323
Commercial Construction [Member]
Internal risk-rating categories for the Company's commercial portfolio
TOTAL	278,692	265,994
Small Business [Member]
Internal risk-rating categories for the Company's commercial portfolio
TOTAL	91,367	85,247
PASS [Member]
Internal risk-rating categories for the Company's commercial portfolio
TOTAL	3,647,983	3,327,638
PASS [Member] | Commercial and Industrial [Member]
Internal risk-rating categories for the Company's commercial portfolio
TOTAL	803,026	801,578
PASS [Member] | Commercial Real Estate [Member]
Internal risk-rating categories for the Company's commercial portfolio
TOTAL	2,488,514	2,196,109
PASS [Member] | Commercial Construction [Member]
Internal risk-rating categories for the Company's commercial portfolio
TOTAL	268,628	248,696
PASS [Member] | Small Business [Member]
Internal risk-rating categories for the Company's commercial portfolio
TOTAL	87,815	81,255
POTENTIAL WEAKNESS [Member]
Internal risk-rating categories for the Company's commercial portfolio
TOTAL	140,044	138,570
POTENTIAL WEAKNESS [Member] | Commercial and Industrial [Member]
Internal risk-rating categories for the Company's commercial portfolio
TOTAL	50,448	37,802
POTENTIAL WEAKNESS [Member] | Commercial Real Estate [Member]
Internal risk-rating categories for the Company's commercial portfolio
TOTAL	77,276	82,372
POTENTIAL WEAKNESS [Member] | Commercial Construction [Member]
Internal risk-rating categories for the Company's commercial portfolio
TOTAL	9,530	15,464
POTENTIAL WEAKNESS [Member] | Small Business [Member]
Internal risk-rating categories for the Company's commercial portfolio
TOTAL	2,790	2,932
DEFINITE WEAKNESS-LOSS UNLIKELY [Member]
Internal risk-rating categories for the Company's commercial portfolio
TOTAL	83,827	90,595
DEFINITE WEAKNESS-LOSS UNLIKELY [Member] | Commercial and Industrial [Member]
Internal risk-rating categories for the Company's commercial portfolio
TOTAL	19,540	20,241
DEFINITE WEAKNESS-LOSS UNLIKELY [Member] | Commercial Real Estate [Member]
Internal risk-rating categories for the Company's commercial portfolio
TOTAL	63,069	67,571
DEFINITE WEAKNESS-LOSS UNLIKELY [Member] | Commercial Construction [Member]
Internal risk-rating categories for the Company's commercial portfolio
TOTAL	534	1,834
DEFINITE WEAKNESS-LOSS UNLIKELY [Member] | Small Business [Member]
Internal risk-rating categories for the Company's commercial portfolio
TOTAL	684	949
PARTIAL LOSS PROBABLE [Member]
Internal risk-rating categories for the Company's commercial portfolio
TOTAL	1,372	2,600
PARTIAL LOSS PROBABLE [Member] | Commercial and Industrial [Member]
Internal risk-rating categories for the Company's commercial portfolio
TOTAL	91	1,218
PARTIAL LOSS PROBABLE [Member] | Commercial Real Estate [Member]
Internal risk-rating categories for the Company's commercial portfolio
TOTAL	1,203	1,271
PARTIAL LOSS PROBABLE [Member] | Commercial Construction [Member]
Internal risk-rating categories for the Company's commercial portfolio
TOTAL	0	0
PARTIAL LOSS PROBABLE [Member] | Small Business [Member]
Internal risk-rating categories for the Company's commercial portfolio
TOTAL	78	111
DEFINITE LOSS [Member]
Internal risk-rating categories for the Company's commercial portfolio
TOTAL	0	0
DEFINITE LOSS [Member] | Commercial and Industrial [Member]
Internal risk-rating categories for the Company's commercial portfolio
TOTAL	0	0
DEFINITE LOSS [Member] | Commercial Real Estate [Member]
Internal risk-rating categories for the Company's commercial portfolio
TOTAL	0	0
DEFINITE LOSS [Member] | Commercial Construction [Member]
Internal risk-rating categories for the Company's commercial portfolio
TOTAL	0	0
DEFINITE LOSS [Member] | Small Business [Member]
Internal risk-rating categories for the Company's commercial portfolio
TOTAL	$ 0	$ 0

Loans, Allowance for Loan Los49

Loans, Allowance for Loan Losses and Credit Quality (Weighted Average FICO Scores and the Weighted Average Combined LTV Ratio) (Details) - score	Jun. 30, 2015	Dec. 31, 2014
Residential Portfolio Segment [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Financing Receivable With Quality Of Loan Based On Weighted Average Fico Rating	741	739
Financing Receivable With Credit Quality Of Loan Based Upon the Weighted Average Loan-To-Value Ratio	60.30%	67.10%
Consumer Home Equity [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Financing Receivable With Quality Of Loan Based On Weighted Average Fico Rating	764	764
Financing Receivable With Credit Quality Of Loan Based Upon the Weighted Average Loan-To-Value Ratio	50.50%	53.60%

Loans, Allowance for Loan Los50

Loans, Allowance for Loan Losses and Credit Quality (Summary of Nonaccrual Loans) (Details) - USD ($) $ in Thousands	Jun. 30, 2015	Dec. 31, 2014
Financing Receivable Impaired [Line Items]
Financing Receivable, Recorded Investment, Nonaccrual Status	$ 26,046	$ 27,393
Commercial and Industrial [Member]
Financing Receivable Impaired [Line Items]
Financing Receivable, Recorded Investment, Nonaccrual Status	3,767	2,822
Commercial Real Estate [Member]
Financing Receivable Impaired [Line Items]
Financing Receivable, Recorded Investment, Nonaccrual Status	6,515	7,279
Construction Loans [Member]
Financing Receivable Impaired [Line Items]
Financing Receivable, Recorded Investment, Nonaccrual Status	309	311
Small Business [Member]
Financing Receivable Impaired [Line Items]
Financing Receivable, Recorded Investment, Nonaccrual Status	198	246
Residential Real Estate [Member]
Financing Receivable Impaired [Line Items]
Financing Receivable, Recorded Investment, Nonaccrual Status	7,982	8,697
Consumer Home Equity [Member]
Financing Receivable Impaired [Line Items]
Financing Receivable, Recorded Investment, Nonaccrual Status	7,238	8,038
Consumer - Other [Member]
Financing Receivable Impaired [Line Items]
Financing Receivable, Recorded Investment, Nonaccrual Status	$ 37	$ 0

Loans, Allowance for Loan Los51

Loans, Allowance for Loan Losses and Credit Quality (Age Analysis of Past Due Financing Receivables) (Details) $ in Thousands	Jun. 30, 2015USD ($)loan	Dec. 31, 2014USD ($)loan
Age Analysis of Past Due Financing Receivables
Number of Loans 30-59 Days | loan	79	112
Number of Loans 60-89 Days | loan	38	47
Number of Loans 90 Days or More | loan	90	110
Number of Loans Total Past Due | loan	207	269
Principal Balance Total Past Due	$ 26,531	$ 39,604
Current	5,408,251	4,931,129
Total Financing Receivables	5,434,782	4,970,733
Recorded Investment >90 Days and Accruing	$ 104	$ 119
Commercial and Industrial [Member]
Age Analysis of Past Due Financing Receivables
Number of Loans 30-59 Days | loan	11	18
Number of Loans 60-89 Days | loan	5	10
Number of Loans 90 Days or More | loan	11	19
Number of Loans Total Past Due | loan	27	47
Principal Balance Total Past Due	$ 5,902	$ 6,519
Current	867,203	854,320
Total Financing Receivables	873,105	860,839
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	12	19
Number of Loans 60-89 Days | loan	7	6
Number of Loans 90 Days or More | loan	19	16
Number of Loans Total Past Due | loan	38	41
Principal Balance Total Past Due	$ 11,286	$ 19,133
Current	2,618,776	2,328,190
Total Financing Receivables	2,630,062	2,347,323
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	$ 309	$ 817
Current	278,383	265,177
Total Financing Receivables	278,692	265,994
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	7	7
Number of Loans 60-89 Days | loan	2	8
Number of Loans 90 Days or More | loan	9	7
Number of Loans Total Past Due | loan	18	22
Principal Balance Total Past Due	$ 230	$ 307
Current	91,137	84,940
Total Financing Receivables	91,367	85,247
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	8	13
Number of Loans 60-89 Days | loan	5	10
Number of Loans 90 Days or More | loan	25	36
Number of Loans Total Past Due | loan	38	59
Principal Balance Total Past Due	$ 5,665	$ 8,294
Current	647,705	521,965
Total Financing Receivables	653,370	530,259
Recorded Investment >90 Days and Accruing	$ 104	$ 106
Consumer Home Equity [Member]
Age Analysis of Past Due Financing Receivables
Number of Loans 30-59 Days | loan	16	20
Number of Loans 60-89 Days | loan	11	7
Number of Loans 90 Days or More | loan	18	23
Number of Loans Total Past Due | loan	45	50
Principal Balance Total Past Due	$ 2,962	$ 4,268
Current	887,931	859,595
Total Financing Receivables	890,893	863,863
Recorded Investment >90 Days and Accruing	$ 0	$ 0
Consumer - Other [Member]
Age Analysis of Past Due Financing Receivables
Number of Loans 30-59 Days | loan	25	34
Number of Loans 60-89 Days | loan	8	6
Number of Loans 90 Days or More | loan	7	8
Number of Loans Total Past Due | loan	40	48
Principal Balance Total Past Due	$ 177	$ 266
Current	17,116	16,942
Total Financing Receivables	17,293	17,208
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	6,591	20,609
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	1,528	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	3,052	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	143	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	1,030	1,670
Financing Receivables, 30 to 59 Days Past Due [Member] | Consumer Home Equity [Member]
Age Analysis of Past Due Financing Receivables
Principal Balance Total Past Due	688	1,559
Financing Receivables, 30 to 59 Days Past Due [Member] | Consumer - Other [Member]
Age Analysis of Past Due Financing Receivables
Principal Balance Total Past Due	150	233
Financing Receivables, 60 to 89 Days Past Due [Member]
Age Analysis of Past Due Financing Receivables
Principal Balance Total Past Due	6,774	4,725
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	1,423	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	3,792	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	2	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	855	1,798
Financing Receivables, 60 to 89 Days Past Due [Member] | Consumer Home Equity [Member]
Age Analysis of Past Due Financing Receivables
Principal Balance Total Past Due	692	307
Financing Receivables, 60 to 89 Days Past Due [Member] | Consumer - Other [Member]
Age Analysis of Past Due Financing Receivables
Principal Balance Total Past Due	10	20
Financing Receivables, Equal to Greater than 90 Days Past Due [Member]
Age Analysis of Past Due Financing Receivables
Principal Balance Total Past Due	13,166	14,270
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	2,951	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	4,442	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	309	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	85	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	3,780	4,826
Financing Receivables, Equal to Greater than 90 Days Past Due [Member] | Consumer Home Equity [Member]
Age Analysis of Past Due Financing Receivables
Principal Balance Total Past Due	1,582	2,402
Financing Receivables, Equal to Greater than 90 Days Past Due [Member] | Consumer - Other [Member]
Age Analysis of Past Due Financing Receivables
Principal Balance Total Past Due	$ 17	$ 13

Loans, Allowance for Loan Los52

Loans, Allowance for Loan Losses and Credit Quality (TDR's and Other Pertinent Information) (Details) - USD ($) $ in Thousands	Jun. 30, 2015	Dec. 31, 2014
Summary of Troubled Debt Restructurings and other pertinent information
TDRS ON ACCRUAL STATUS	$ 36,750	$ 38,382
TDRS ON NONACCRUAL	5,623	5,248
TOTAL TDR'S	42,373	43,630
AMOUNT OF SPECIFIC RESERVES INCLUDED IN THE ALLOWANCE FOR LOAN LOSSES ASSOCIATED WITH TDRS:	1,872	2,004
Additional Commitments To Lend To Borrower For Trouble Debt Restructuring	$ 1,522	$ 1,400

Loans, Allowance for Loan Los53

Loans, Allowance for Loan Losses and Credit Quality (Modifications which occurred during the period & change in recorded investment) (Details) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015USD ($)contract	Jun. 30, 2014USD ($)contract	Jun. 30, 2015USD ($)contract	Jun. 30, 2014USD ($)contract
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Number of Contracts | contract	15	7	26	27
TROUBLED DEBT RESTRUCTURINGS:
Financing Receivable, Modifications, Pre-Modification Recorded Investment	$ 3,415	$ 1,036	$ 4,201	$ 4,046
Financing Receivable, Modifications, Post-Modification Recorded Investment	$ 3,415	$ 1,036	$ 4,201	$ 4,017
Commercial and Industrial [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Number of Contracts | contract	7	3	10	12
TROUBLED DEBT RESTRUCTURINGS:
Financing Receivable, Modifications, Pre-Modification Recorded Investment	$ 1,197	$ 399	$ 1,353	$ 824
Financing Receivable, Modifications, Post-Modification Recorded Investment	$ 1,197	$ 399	$ 1,353	$ 824
Commercial Real Estate [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Number of Contracts | contract	4	0	5	6
TROUBLED DEBT RESTRUCTURINGS:
Financing Receivable, Modifications, Pre-Modification Recorded Investment	$ 2,071	$ 0	$ 2,310	$ 1,882
Financing Receivable, Modifications, Post-Modification Recorded Investment	$ 2,071	$ 0	$ 2,310	$ 1,882
Small Business [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Number of Contracts | contract	3	1	5	2
TROUBLED DEBT RESTRUCTURINGS:
Financing Receivable, Modifications, Pre-Modification Recorded Investment	$ 116	$ 117	$ 166	$ 174
Financing Receivable, Modifications, Post-Modification Recorded Investment	$ 116	$ 117	$ 166	$ 174
Residential Real Estate [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Number of Contracts | contract	0	0	3	2
TROUBLED DEBT RESTRUCTURINGS:
Financing Receivable, Modifications, Pre-Modification Recorded Investment	$ 0	$ 0	$ 157	$ 542
Financing Receivable, Modifications, Post-Modification Recorded Investment	$ 0	$ 0	$ 157	$ 513
Consumer - Home Equity [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Number of Contracts | contract	1	3	3	4
TROUBLED DEBT RESTRUCTURINGS:
Financing Receivable, Modifications, Pre-Modification Recorded Investment	$ 31	$ 520	$ 215	$ 616
Financing Receivable, Modifications, Post-Modification Recorded Investment	$ 31	$ 520	$ 215	$ 616
Consumer - Other [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Number of Contracts | contract		0		1
TROUBLED DEBT RESTRUCTURINGS:
Financing Receivable, Modifications, Pre-Modification Recorded Investment		$ 0		$ 8
Financing Receivable, Modifications, Post-Modification Recorded Investment		$ 0		$ 8

Loans, Allowance for Loan Los54

Loans, Allowance for Loan Losses and Credit Quality (Post-Modification balance of TDRs Listed by Type of Modifications) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Post modification balance of Troubled Debt Restructuring
EXTENDED MATURITY	$ 1,005	$ 633	$ 1,648	$ 1,640
ADJUSTED INTEREST RATE	0	0	0	728
COMBINATION RATE & MATURITY	2,410	403	2,523	1,670
COURT ORDERED CONCESSION	0	0	30	8
TOTAL	$ 3,415	$ 1,036	$ 4,201	$ 4,046

Loans, Allowance for Loan Los55

Loans, Allowance for Loan Losses and Credit Quality (TDRs that have subsequently defaulted) (Details) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015USD ($)contract	Jun. 30, 2014USD ($)contract	Jun. 30, 2015USD ($)contract	Jun. 30, 2014USD ($)contract
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Subsequent Default, Number of Contracts	0	2	5	3
Financing Receivable, Modifications, Subsequent Default, Recorded Investment | $	$ 0	$ 209	$ 1,219	$ 385
Commercial Real Estate [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Subsequent Default, Number of Contracts	0	1	2	2
Financing Receivable, Modifications, Subsequent Default, Recorded Investment | $	$ 0	$ 73	$ 880	$ 249
Commercial and Industrial [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Subsequent Default, Number of Contracts			3	0
Financing Receivable, Modifications, Subsequent Default, Recorded Investment | $			$ 339	$ 0
Residential Real Estate [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Subsequent Default, Number of Contracts	0	1	0	1
Financing Receivable, Modifications, Subsequent Default, Recorded Investment | $	$ 0	$ 136	$ 0	$ 136

Loans, Allowance for Loan Los56

Loans, Allowance for Loan Losses and Credit Quality (Impaired Loans by Portfolio) (Details) - USD ($) $ in Thousands	Jun. 30, 2015	Dec. 31, 2014	Jun. 30, 2014
Impaired loans by loan portfolio
Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment	$ 2,132	$ 2,416	$ 2,730
Related Allowance	2,132	2,416
Impaired Financing Receivable, Recorded Investment, Total	58,666	58,035
Impaired Financing Receivable, Unpaid Principal Balance	61,552	61,887
WITH NO RELATED ALLOWANCE RECORDED: [Member]
Impaired loans by loan portfolio
Recorded Investment	27,046	26,936
Unpaid Principal Balance	28,366	28,535
Related Allowance	0	0
WITH AN ALLOWANCE RECORDED: [Member]
Impaired loans by loan portfolio
Recorded Investment	31,620	31,099
Unpaid Principal Balance	33,186	33,352
Commercial and Industrial [Member]
Impaired loans by loan portfolio
Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment	310	412	472
Commercial and Industrial [Member] | WITH NO RELATED ALLOWANCE RECORDED: [Member]
Impaired loans by loan portfolio
Recorded Investment	2,785	3,005
Unpaid Principal Balance	2,914	3,278
Related Allowance	0	0
Commercial and Industrial [Member] | WITH AN ALLOWANCE RECORDED: [Member]
Impaired loans by loan portfolio
Recorded Investment	2,625	1,649
Unpaid Principal Balance	2,769	1,859
Commercial Real Estate [Member]
Impaired loans by loan portfolio
Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment	201	197	292
Commercial Real Estate [Member] | WITH NO RELATED ALLOWANCE RECORDED: [Member]
Impaired loans by loan portfolio
Recorded Investment	14,379	15,982
Unpaid Principal Balance	15,352	17,164
Related Allowance	0	0
Commercial Real Estate [Member] | WITH AN ALLOWANCE RECORDED: [Member]
Impaired loans by loan portfolio
Recorded Investment	15,183	14,747
Unpaid Principal Balance	15,332	15,514
Construction Loans [Member]
Impaired loans by loan portfolio
Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment	0		0
Construction Loans [Member] | WITH NO RELATED ALLOWANCE RECORDED: [Member]
Impaired loans by loan portfolio
Recorded Investment	309	311
Unpaid Principal Balance	310	311
Related Allowance	0	0
Small Business [Member]
Impaired loans by loan portfolio
Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment	4	7	45
Small Business [Member] | WITH NO RELATED ALLOWANCE RECORDED: [Member]
Impaired loans by loan portfolio
Recorded Investment	452	692
Unpaid Principal Balance	492	718
Related Allowance	0	0
Small Business [Member] | WITH AN ALLOWANCE RECORDED: [Member]
Impaired loans by loan portfolio
Recorded Investment	434	396
Unpaid Principal Balance	462	458
Residential Real Estate [Member]
Impaired loans by loan portfolio
Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment	1,337	1,500	1,599
Residential Real Estate [Member] | WITH NO RELATED ALLOWANCE RECORDED: [Member]
Impaired loans by loan portfolio
Recorded Investment	3,357	2,439
Unpaid Principal Balance	3,469	2,502
Related Allowance	0	0
Residential Real Estate [Member] | WITH AN ALLOWANCE RECORDED: [Member]
Impaired loans by loan portfolio
Recorded Investment	11,583	12,616
Unpaid Principal Balance	12,677	13,727
Consumer - Home Equity [Member]
Impaired loans by loan portfolio
Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment	250	262	273
Consumer - Home Equity [Member] | WITH NO RELATED ALLOWANCE RECORDED: [Member]
Impaired loans by loan portfolio
Recorded Investment	4,565	4,169
Unpaid Principal Balance	4,621	4,221
Related Allowance	0	0
Consumer - Home Equity [Member] | WITH AN ALLOWANCE RECORDED: [Member]
Impaired loans by loan portfolio
Recorded Investment	1,330	1,161
Unpaid Principal Balance	1,467	1,264
Consumer - Other [Member]
Impaired loans by loan portfolio
Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment	30	38	$ 49
Consumer - Other [Member] | WITH NO RELATED ALLOWANCE RECORDED: [Member]
Impaired loans by loan portfolio
Recorded Investment	1,199	338
Unpaid Principal Balance	1,208	341
Related Allowance	0	0
Consumer - Other [Member] | WITH AN ALLOWANCE RECORDED: [Member]
Impaired loans by loan portfolio
Recorded Investment	465	530
Unpaid Principal Balance	$ 479	$ 530

Loans, Allowance for Loan Los57

Loans, Allowance for Loan Losses and Credit Quality (Int Inc. Recognized on Impaired Loans by Portfolio) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Interest income recognized on impaired loans
Average Recorded Investment	$ 59,053	$ 61,942	$ 59,834	$ 62,952
Interest Income Recognized	764	804	1,582	1,614
WITH NO RELATED ALLOWANCE RECORDED: [Member]
Interest income recognized on impaired loans
Average Recorded Investment	27,252	28,925	27,843	29,457
Interest Income Recognized	373	403	764	811
WITH AN ALLOWANCE RECORDED: [Member]
Interest income recognized on impaired loans
Average Recorded Investment	31,801	33,017	31,991	33,495
Interest Income Recognized	391	401	818	803
Commercial and Industrial [Member] | WITH NO RELATED ALLOWANCE RECORDED: [Member]
Interest income recognized on impaired loans
Average Recorded Investment	2,842	4,449	2,927	4,774
Interest Income Recognized	40	60	81	123
Commercial and Industrial [Member] | WITH AN ALLOWANCE RECORDED: [Member]
Interest income recognized on impaired loans
Average Recorded Investment	2,712	2,808	2,749	2,906
Interest Income Recognized	31	40	62	81
Commercial Real Estate [Member] | WITH NO RELATED ALLOWANCE RECORDED: [Member]
Interest income recognized on impaired loans
Average Recorded Investment	14,467	16,216	15,044	16,342
Interest Income Recognized	227	246	471	490
Commercial Real Estate [Member] | WITH AN ALLOWANCE RECORDED: [Member]
Interest income recognized on impaired loans
Average Recorded Investment	15,231	14,523	15,292	14,748
Interest Income Recognized	204	205	406	413
Construction Loans [Member] | WITH NO RELATED ALLOWANCE RECORDED: [Member]
Interest income recognized on impaired loans
Average Recorded Investment	310		311
Interest Income Recognized	3		7
Small Business [Member] | WITH NO RELATED ALLOWANCE RECORDED: [Member]
Interest income recognized on impaired loans
Average Recorded Investment	459	1,051	471	1,076
Interest Income Recognized	6	16	13	32
Small Business [Member] | WITH AN ALLOWANCE RECORDED: [Member]
Interest income recognized on impaired loans
Average Recorded Investment	442	449	453	462
Interest Income Recognized	7	8	15	16
Residential Real Estate [Member] | WITH NO RELATED ALLOWANCE RECORDED: [Member]
Interest income recognized on impaired loans
Average Recorded Investment	3,385	2,415	3,403	2,426
Interest Income Recognized	40	24	79	50
Residential Real Estate [Member] | WITH AN ALLOWANCE RECORDED: [Member]
Interest income recognized on impaired loans
Average Recorded Investment	11,608	13,449	11,662	13,563
Interest Income Recognized	128	132	295	264
Consumer - Home Equity [Member] | WITH NO RELATED ALLOWANCE RECORDED: [Member]
Interest income recognized on impaired loans
Average Recorded Investment	4,585	4,431	4,613	4,465
Interest Income Recognized	51	51	102	103
Consumer - Home Equity [Member] | WITH AN ALLOWANCE RECORDED: [Member]
Interest income recognized on impaired loans
Average Recorded Investment	1,336	1,102	1,345	1,109
Interest Income Recognized	16	10	31	17
Consumer - Other [Member] | WITH NO RELATED ALLOWANCE RECORDED: [Member]
Interest income recognized on impaired loans
Average Recorded Investment	1,204	363	1,074	374
Interest Income Recognized	6	6	11	13
Consumer - Other [Member] | WITH AN ALLOWANCE RECORDED: [Member]
Interest income recognized on impaired loans
Average Recorded Investment	472	686	490	707
Interest Income Recognized	$ 5	$ 6	$ 9	$ 12

Loans, Allowance for Loan Los58

Loans, Allowance for Loan Losses and Credit Quality (Purchased Credit Impaired Loans - Outstanding/Carrying balances) (Details) - USD ($) $ in Thousands	Jun. 30, 2015	Dec. 31, 2014
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities Acquired During Period [Line Items]
Outstanding balance	$ 23,724	$ 25,279
Carrying amount	$ 21,694	$ 22,315

Loans, Allowance for Loan Los59

Loans, Allowance for Loan Losses and Credit Quality (Activity in the Accretable Yield for PCI loans) (Details) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014
Certain Loans Acquired in Transfer Accounted for as Debt Securities, Accretable Yield Movement Schedule [Roll Forward]
Certain Loans Acquired in Transfer Accounted for as Debt Securities, Accretable Yield, Beginning of Period	$ 2,974	$ 2,514
Certain Loans Acquired in Transfer Accounted for as Debt Securities, Accretable Yield, Additions	319	0
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Accretable Yield, Accretion	1,546	(1,055)
Certain loans acquired in transfer not accounted for as debt securities accretable yield adjustment changes in expected cash flow	700	2,192
Certain Loans Acquired in Transfer Accounted for as Debt Securities, Accretable Yield, Reclassifications from Nonaccretable Difference	80	194
Certain Loans Acquired in Transfer Accounted for as Debt Securities, Accretable Yield, End of Period	$ 2,527	$ 3,845

Loans, Allowance for Loan Los60

Loans, Allowance for Loan Losses and Credit Quality (Textual) (Details) - USD ($) $ in Thousands	6 Months Ended	12 Months Ended
	Jun. 30, 2015	Dec. 31, 2014
Accounts, Notes, Loans and Financing Receivable [Line Items]
Days to be termed as non accrual loans	90 days
Tdrs Recorded Investment On Nonaccrual Status	$ 5,623	$ 5,248
Loans Allowance for Loan Losses and Credit Quality (Textual) [Abstract]
The amount of deferred fees	$ 3,500	$ 2,800

Loans, Allowance for Loan Los61

Loans, Allowance for Loan Losses and Credit Quality Foreclosed Residential Real Estate Property (Details) $ in Thousands	Jun. 30, 2015USD ($)
Accounts, Notes, Loans and Financing Receivable [Line Items]
Foreclosed residential real estate property held by the creditor	$ 1,390
Recorded investment in mortgage loans collateralized by residential real estate property that are in the process of foreclosure	$ 2,199

Earnings Per Share (EPS Compone

Earnings Per Share (EPS Components) (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Summary of earnings per share
Net income	$ 17,451	$ 14,746	$ 26,910	$ 28,129
Weighted Average Shares (in shares)
BASIC SHARES	26,149,593	23,897,413	25,558,016	23,858,456
EFFECT OF DILUTIVE SECURITIES	71,819	94,560	76,626	97,544
DILUTIVE SHARES	26,221,412	23,991,973	25,634,642	23,956,000
NET INCOME PER SHARE (in dollars per share)
BASIC EPS	$ 0.67	$ 0.62	$ 1.05	$ 1.18
EFFECT OF DILUTIVE SECURITIES	0	(0.01)	0	(0.01)
DILUTIVE EPS	$ 0.67	$ 0.61	$ 1.05	$ 1.17

Stock Based Compensation (Award

Stock Based Compensation (Awards of Restricted Stock) (Details) - 6 months ended Jun. 30, 2015 - $ / shares	Total
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares Granted	21,780
Grant Date Fair Value	$ 40.03
2/11/2015 | 2005 Employee Stock Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares Granted	31,500
Grant Date Fair Value	$ 39.42
Vesting Period	Ratably over 5 years from grant date
2/12/2015 | 2005 Employee Stock Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares Granted	25,910
Grant Date Fair Value	$ 40.03
Vesting Period	Ratably over 5 years from grant date
3/19/2015 | 2005 Employee Stock Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares Granted	3,800
Grant Date Fair Value	$ 43.56
Vesting Period	Ratably over 5 years from grant date
4/27/2015 | 2005 Employee Stock Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares Granted	625
Grant Date Fair Value	$ 41.61
Vesting Period	At the end of 3 years from grant date
4/27/2015 | 2005 Employee Stock Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares Granted	1,875
Grant Date Fair Value	$ 41.61
Vesting Period	At the end of 5 years from grant date
5/27/2015 | 2010 Non-Employee Director Stock Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares Granted	8,800
Grant Date Fair Value	$ 45.02
Vesting Period	At the end of 5 years from grant date

Stock Based Compensation Perfor

Stock Based Compensation Performance-based Restricted Stock Textual (Details) - 6 months ended Jun. 30, 2015 - $ / shares	Total
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Share-based Compensation Arrangement by Share-based Payment Award, Non-Option Equity Instruments, 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	$ 40.03

Repurchase Agreements Repurch65

Repurchase Agreements Repurchase Agreements (Details) $ in Thousands	Jun. 30, 2015USD ($)
Assets Sold under Agreements to Repurchase [Line Items]
Assets Sold under Agreements to Repurchase, Repurchase Liability	$ 169,440
U.S. Government agency securities
Assets Sold under Agreements to Repurchase [Line Items]
Assets Sold under Agreements to Repurchase, Repurchase Liability	18,811
Mortgage-backed Securities, Issued by US Government Sponsored Enterprises [Member]
Assets Sold under Agreements to Repurchase [Line Items]
Assets Sold under Agreements to Repurchase, Repurchase Liability	83,179
Collateralized Debt Obligations [Member]
Assets Sold under Agreements to Repurchase [Line Items]
Assets Sold under Agreements to Repurchase, Repurchase Liability	67,450
Maturity Overnight [Member]
Assets Sold under Agreements to Repurchase [Line Items]
Assets Sold under Agreements to Repurchase, Repurchase Liability	119,440
Maturity Overnight [Member] | U.S. Government agency securities
Assets Sold under Agreements to Repurchase [Line Items]
Assets Sold under Agreements to Repurchase, Repurchase Liability	9,962
Maturity Overnight [Member] | Mortgage-backed Securities, Issued by US Government Sponsored Enterprises [Member]
Assets Sold under Agreements to Repurchase [Line Items]
Assets Sold under Agreements to Repurchase, Repurchase Liability	42,028
Maturity Overnight [Member] | Collateralized Debt Obligations [Member]
Assets Sold under Agreements to Repurchase [Line Items]
Assets Sold under Agreements to Repurchase, Repurchase Liability	67,450
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] | Mortgage-backed Securities, Issued by US Government Sponsored Enterprises [Member]
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 30 to 90 Days [Member]
Assets Sold under Agreements to Repurchase [Line Items]
Assets Sold under Agreements to Repurchase, Repurchase Liability	50,000
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	8,849
Maturity 30 to 90 Days [Member] | Mortgage-backed Securities, Issued by US Government Sponsored Enterprises [Member]
Assets Sold under Agreements to Repurchase [Line Items]
Assets Sold under Agreements to Repurchase, Repurchase Liability	41,151
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 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] | Mortgage-backed Securities, Issued by US Government Sponsored Enterprises [Member]
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

Derivatives and Hedging Activ66

Derivatives and Hedging Activities (Derivative Positions for Interest Rate Swaps which Qualify as Hedges) (Details) - USD ($)	6 Months Ended	12 Months Ended
	Jun. 30, 2015	Dec. 31, 2014
Details of derivative positions for interest rate swaps which qualify as hedges for accounting purposes
Notional Amount	$ 75,000,000	$ 75,000,000
Fair Value	(4,636,000)	(5,570,000)
Positions One [Member]
Details of derivative positions for interest rate swaps which qualify as hedges for accounting purposes
Notional Amount	$ 25,000,000	$ 25,000,000
Receive (Variable) Index	3 Month LIBOR	3 Month LIBOR
Trade Date	Feb. 16, 2006	Feb. 16, 2006
Effective Date	Dec. 28, 2006	Dec. 28, 2006
Maturity Date	Dec. 28, 2016	Dec. 28, 2016
Current Rate Received	0.29%	0.24%
Pay Fixed Swap Rate	5.04%	5.036%
Fair Value	$ (1,640,000)	$ (2,093,000)
Positions Two [Member]
Details of derivative positions for interest rate swaps which qualify as hedges for accounting purposes
Notional Amount	$ 25,000,000	$ 25,000,000
Receive (Variable) Index	3 Month LIBOR	3 Month LIBOR
Trade Date	Feb. 16, 2006	Feb. 16, 2006
Effective Date	Dec. 28, 2006	Dec. 28, 2006
Maturity Date	Dec. 28, 2016	Dec. 28, 2016
Current Rate Received	0.29%	0.24%
Pay Fixed Swap Rate	5.04%	5.037%
Fair Value	$ (1,640,000)	$ (2,094,000)
Positions Four [Member]
Details of derivative positions for interest rate swaps which qualify as hedges for accounting purposes
Notional Amount	$ 25,000,000	$ 25,000,000
Receive (Variable) Index	3 Month LIBOR	3 Month LIBOR
Trade Date	Dec. 9, 2008	Dec. 9, 2008
Effective Date	Dec. 10, 2008	Dec. 10, 2008
Maturity Date	Dec. 10, 2018	Dec. 10, 2018
Current Rate Received	0.28%	0.24%
Pay Fixed Swap Rate	2.94%	2.94%
Fair Value	$ (1,356,000)	$ (1,383,000)

Derivatives and Hedging Activ67

Derivatives and Hedging Activities (Customer Related Derivative Positions - Not Designated as Hedges) (Details)	Jun. 30, 2015USD ($)position	Dec. 31, 2014USD ($)position
Summary of customer related derivative positions, not designated as hedging
Total	$ 75,000,000	$ 75,000,000
Derivative Asset, Fair Value, Gross Asset	18,448,000	22,390,000
Fair Value	(4,636,000)	(5,570,000)
Loan level swaps
Summary of customer related derivative positions, not designated as hedging
Derivative Asset, Fair Value, Gross Asset	17,636,000	18,383,000
Foreign exchange contracts
Summary of customer related derivative positions, not designated as hedging
Derivative Asset, Fair Value, Gross Asset	$ 812,000	$ 4,007,000
Not Designated as Hedging Instrument | Receive fixed, pay variable | Loan level swaps
Summary of customer related derivative positions, not designated as hedging
Number of Positions | position	177	174
Less than 1 year	$ 71,534,000	$ 88,147,000
Less than 2 years	43,250,000	46,854,000
Less than 3 years	40,474,000	40,958,000
Less than 4 years	74,605,000	38,108,000
Thereafter	426,106,000	403,208,000
Total	655,969,000	617,275,000
Fair Value	$ 17,507,000	$ 17,840,000
Not Designated as Hedging Instrument | Pay fixed, receive variable | Loan level swaps
Summary of customer related derivative positions, not designated as hedging
Number of Positions | position	171	168
Less than 1 year	$ 71,534,000	$ 88,147,000
Less than 2 years	43,250,000	46,854,000
Less than 3 years	40,474,000	40,958,000
Less than 4 years	74,605,000	38,108,000
Thereafter	426,106,000	403,208,000
Total	655,969,000	617,275,000
Fair Value	$ (17,538,000)	$ (17,837,000)
Not Designated as Hedging Instrument | Buys foreign currency, sells U.S. currency | Foreign exchange contracts
Summary of customer related derivative positions, not designated as hedging
Number of Positions | position	16	23
Less than 1 year	$ 24,099,000	$ 57,112,000
Total	24,099,000	57,112,000
Fair Value	$ 812,000	$ 4,007,000
Not Designated as Hedging Instrument | Buys U.S. currency, sells foreign currency | Foreign exchange contracts
Summary of customer related derivative positions, not designated as hedging
Number of Positions | position	16	23
Less than 1 year	$ 24,099,000	$ 57,112,000
Total	24,099,000	57,112,000
Fair Value	$ (789,000)	$ (3,984,000)

Derivatives and Hedging Activ68

Derivatives and Hedging Activities (FV of Derivative Financial Instruments and Classification on Balance Sheet) (Details) - USD ($) $ in Thousands	Jun. 30, 2015	Dec. 31, 2014
Derivatives, Fair Value [Line Items]
Derivative Asset, Fair Value, Gross Asset	$ 18,448	$ 22,390
Liability Derivatives	192,531	225,824
Other Assets [Member]
Derivatives, Fair Value [Line Items]
Derivative Instruments Not Designated as Hedging Instruments, Asset, at Fair Value	18,778	22,688
Derivative Asset, Fair Value, Gross Asset	18,778	22,688
Other Liabilities [Member]
Derivatives, Fair Value [Line Items]
Derivative Instruments Not Designated as Hedging Instruments, Liability, at Fair Value	18,611	22,380
Liability Derivatives	23,247	27,950
Interest rate swaps [Member]
Derivatives, Fair Value [Line Items]
Derivative Asset, Fair Value, Gross Asset	0	0
Liability Derivatives	4,636	5,570
Interest rate swaps [Member] | Derivatives designated as hedges [Member] | Other Assets [Member]
Derivatives, Fair Value [Line Items]
Interest Rate Derivative Assets, at Fair Value	0
Interest rate swaps [Member] | Derivatives designated as hedges [Member] | Other Liabilities [Member]
Derivatives, Fair Value [Line Items]
Interest Rate Derivative Liabilities, at Fair Value	4,636	5,570
Loan level swaps [Member]
Derivatives, Fair Value [Line Items]
Derivative Asset, Fair Value, Gross Asset	17,636	18,383
Liability Derivatives	17,667	18,380
Loan level swaps [Member] | Not Designated as Hedging Instrument | Other Assets [Member]
Derivatives, Fair Value [Line Items]
Interest Rate Derivative Instruments Not Designated as Hedging Instruments, Asset at Fair Value	17,636	18,383
Loan level swaps [Member] | Not Designated as Hedging Instrument | Other Liabilities [Member]
Derivatives, Fair Value [Line Items]
Interest Rate Derivative Instruments Not Designated as Hedging Instruments, Liability at Fair Value	17,667	18,380
Foreign exchange contracts
Derivatives, Fair Value [Line Items]
Derivative Asset, Fair Value, Gross Asset	812	4,007
Liability Derivatives	789	3,984
Foreign exchange contracts | Not Designated as Hedging Instrument | Other Assets [Member]
Derivatives, Fair Value [Line Items]
Foreign Currency Derivative Instruments Not Designated as Hedging Instruments, Asset at Fair Value	812	4,007
Foreign exchange contracts | Not Designated as Hedging Instrument | Other Liabilities [Member]
Derivatives, Fair Value [Line Items]
Foreign Currency Derivative Instruments Not Designated as Hedging Instruments, Liability at Fair Value	789	3,984
Interest Rate Lock Commitments [Member] | Not Designated as Hedging Instrument | Other Assets [Member]
Derivatives, Fair Value [Line Items]
Derivative Instrument Not Designated as a Hedge, Interest Rate Lock Commitments, Asset at Fair Value	330	295
Derivative Instrument Not Designated as a Hedge, Forward TBA Mortgage Contracts, Asset at Fair Value	0	0
Derivative Instrument Not Designated as a Hedge, Forward Sales Agreements, Asset at Fair Value	0	3
Interest Rate Lock Commitments [Member] | Not Designated as Hedging Instrument | Other Liabilities [Member]
Derivatives, Fair Value [Line Items]
Derivative Instrument Not Designated as a Hedge, Interest Rate Lock Commitments, Liabilities at Fair Value	0	0
Derivative Instrument Not Designated as a Hedge, Forward TBA Mortgage Contracts, Liability at Fair Value	0	16
Derivative Instrument Not Designated as a Hedge, Forward Sales Agreements, Liabilities at Fair Value	$ 155	$ 0

Derivatives and Hedging Activ69

Derivatives and Hedging Activities (Derivative Financial Instruments included in OCI and Current Earnings) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Derivative Instruments, Gain (Loss) [Line Items]
Gain in OCI on derivatives (effective portion), net of tax	$ (39)	$ (287)	$ (375)	$ (464)
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI for Loss on Termination of Derivatives, before Tax	0	1,122		1,122
Derivatives designated as hedges [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Gain in OCI on derivatives (effective portion), net of tax	382	1,005	464	1,507
Loss reclassified from OCI into interest expense (effective portion)	709	1,063	1,415	2,211
Derivative Instruments, Gain (Loss) Recognized in Income, Ineffective Portion and Amount Excluded from Effectiveness Testing, Net	0	0
Not Designated as Hedging Instrument
Derivative Instruments, Gain (Loss) [Line Items]
Other income	(336)	55	(141)	43
Interest Expense [Member] | Derivatives designated as hedges [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Derivative Instruments, Gain (Loss) Recognized in Income, Ineffective Portion and Amount Excluded from Effectiveness Testing, Net	0	0
Other expense | Not Designated as Hedging Instrument
Derivative Instruments, Gain (Loss) [Line Items]
Other income	(4)	15	17	44
Changes in fair value of mortgage derivatives | Derivatives designated as hedges [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Derivative Instruments, Gain (Loss) Recognized in Income, Ineffective Portion and Amount Excluded from Effectiveness Testing, Net	0	0
Changes in fair value of mortgage derivatives | Not Designated as Hedging Instrument
Derivative Instruments, Gain (Loss) [Line Items]
Other income	(33)	(1)	(51)	(2)
Total | Not Designated as Hedging Instrument
Derivative Instruments, Gain (Loss) [Line Items]
Mortgage banking income	$ (299)	$ 41	$ (107)	$ 1

Derivatives and Hedging Activ70

Derivatives and Hedging Activities (Textual) (Details) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014	Dec. 31, 2014
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Change in Fair Value on Loans Held for Sale	$ 157,000	$ 174,000	$ 184,000	$ 225,000
Exposure to Institutional Counterparties	65,000		65,000		$ 272,000
Amortization Of Deferred Hedge Gains Losses	$ 61,000		122,000
Maximum length of time Company is currently hedging its exposure	4 years
Interest expense from OCI, related to cash flow hedges before tax	$ 2,700,000
Notional amount of fair value hedged derivative	0		0
Customer related positions	$ 18,300,000		$ 18,300,000		$ 18,900,000

Assets & Liability Derivative P

Assets & Liability Derivative Positions & the Potential Effect of Netting Arrangements - Current Quarter (Details) - USD ($) $ in Thousands	Jun. 30, 2015	Dec. 31, 2014
Offsetting Liabilities [Line Items]
Derivative Asset, Fair Value, Gross Asset	$ 18,448	$ 22,390
Derivative Asset, Collateral, Obligation to Return Cash, Offset	0	0
Derivative Asset	18,448	22,390
Derivative, Collateral, Obligation to Return Securities	65	272
Derivative, Collateral, Obligation to Return Cash	0	0
Derivative Asset, Fair Value, Amount Offset Against Collateral	18,383	22,118
Derivative Liability, Fair Value, Gross Liability	192,531	225,824
Derivative Liability, Collateral, Right to Reclaim Cash, Offset	0	0
Derivative Liability	192,531	225,824
Derivative, Collateral, Right to Reclaim Securities	65	272
Derivative, Collateral, Right to Reclaim Cash	191,613	221,296
Derivative Liability, Fair Value, Amount Offset Against Collateral	853	4,256
Interest rate swaps
Offsetting Liabilities [Line Items]
Derivative Asset, Fair Value, Gross Asset	0	0
Derivative Asset, Collateral, Obligation to Return Cash, Offset	0	0
Derivative Asset	0	0
Derivative, Collateral, Obligation to Return Securities	0	0
Derivative, Collateral, Obligation to Return Cash	0	0
Derivative Asset, Fair Value, Amount Offset Against Collateral	0	0
Derivative Liability, Fair Value, Gross Liability	4,636	5,570
Derivative Liability, Collateral, Right to Reclaim Cash, Offset	0	0
Derivative Liability	4,636	5,570
Derivative, Collateral, Right to Reclaim Securities	0	0
Derivative, Collateral, Right to Reclaim Cash	4,636	5,570
Derivative Liability, Fair Value, Amount Offset Against Collateral	0	0
Loan level swaps
Offsetting Liabilities [Line Items]
Derivative Asset, Fair Value, Gross Asset	17,636	18,383
Derivative Asset, Collateral, Obligation to Return Cash, Offset	0	0
Derivative Asset	17,636	18,383
Derivative, Collateral, Obligation to Return Securities	65	272
Derivative, Collateral, Obligation to Return Cash	0	0
Derivative Asset, Fair Value, Amount Offset Against Collateral	17,571	18,111
Derivative Liability, Fair Value, Gross Liability	17,667	18,380
Derivative Liability, Collateral, Right to Reclaim Cash, Offset	0	0
Derivative Liability	17,667	18,380
Derivative, Collateral, Right to Reclaim Securities	65	272
Derivative, Collateral, Right to Reclaim Cash	17,538	17,836
Derivative Liability, Fair Value, Amount Offset Against Collateral	65	272
Customer foreign exchange contracts
Offsetting Liabilities [Line Items]
Derivative Asset, Fair Value, Gross Asset	812	4,007
Derivative Asset, Collateral, Obligation to Return Cash, Offset	0	0
Derivative Asset	812	4,007
Derivative, Collateral, Obligation to Return Securities	0	0
Derivative, Collateral, Obligation to Return Cash	0	0
Derivative Asset, Fair Value, Amount Offset Against Collateral	812	4,007
Derivative Liability, Fair Value, Gross Liability	789	3,984
Derivative Liability, Collateral, Right to Reclaim Cash, Offset	0	0
Derivative Liability	789	3,984
Derivative, Collateral, Right to Reclaim Securities	0	0
Derivative, Collateral, Right to Reclaim Cash	0	0
Derivative Liability, Fair Value, Amount Offset Against Collateral	789	3,984
Customer repurchase agreements and other short-term borrowings(c)
Offsetting Liabilities [Line Items]
Derivative Liability, Fair Value, Gross Liability	119,439	147,890
Derivative Liability, Collateral, Right to Reclaim Cash, Offset	0	0
Derivative Liability	119,439	147,890
Derivative, Collateral, Right to Reclaim Securities	0	0
Derivative, Collateral, Right to Reclaim Cash	119,439	147,890
Derivative Liability, Fair Value, Amount Offset Against Collateral	0	0
Wholesale repurchase agreements
Offsetting Liabilities [Line Items]
Derivative Liability, Fair Value, Gross Liability	50,000	50,000
Derivative Liability, Collateral, Right to Reclaim Cash, Offset	0	0
Derivative Liability	50,000	50,000
Derivative, Collateral, Right to Reclaim Securities	0	0
Derivative, Collateral, Right to Reclaim Cash	50,000	50,000
Derivative Liability, Fair Value, Amount Offset Against Collateral	$ 0	$ 0

Fair Value Measurements (Detail

Fair Value Measurements (Details) - Derivative Contract [Domain] - Balance Sheet Location [Domain] - USD ($) $ in Thousands	Jun. 30, 2015	Dec. 31, 2014
ASSETS
Trading Securities	$ 489	$ 0
Securities - available for sale	375,001	348,554
Disposal Group, Including Discontinued Operation, Mortgage Loans	10,728	6,888
Derivative Asset, Fair Value, Gross Asset	18,448	22,390
Recurring fair value measurements
LIABILITIES
TOTAL RECURRING FAIR VALUE MEASUREMENTS	381,749	350,180
Recurring fair value measurements | Trading Securities [Member]
ASSETS
Trading Securities	489
Recurring fair value measurements | U.S. Government agency securities
ASSETS
Securities - available for sale	39,726	41,486
Recurring fair value measurements | Agency mortgage-backed securities
ASSETS
Securities - available for sale	230,997	217,678
Recurring fair value measurements | Agency collateralized mortgage obligations
ASSETS
Securities - available for sale	55,202	63,035
Recurring fair value measurements | Municipal Bonds [Member]
ASSETS
Securities - available for sale	4,668	5,223
Recurring fair value measurements | Single issuer trust preferred securities issued by banks and insurers
ASSETS
Securities - available for sale	2,872	2,909
Recurring fair value measurements | Pooled trust preferred securities issued by banks and insurers
ASSETS
Securities - available for sale	1,595	6,321
Recurring fair value measurements | Small Business Administration Pooled Securities [Member]
ASSETS
Securities - available for sale	26,497
Recurring fair value measurements | Equity securities
ASSETS
Securities - available for sale	13,444	11,902
Recurring fair value measurements | Loans held for sale
ASSETS
Disposal Group, Including Discontinued Operation, Mortgage Loans	10,728	6,888
Recurring fair value measurements | Derivative Financial Instruments, Assets [Member]
ASSETS
Derivative Asset, Fair Value, Gross Asset	18,778	22,688
Recurring fair value measurements | Derivative instruments
LIABILITIES
Liabilities, Fair Value Disclosure, Recurring	23,247	27,950
Nonrecurring fair value measurements
LIABILITIES
TOTAL NONRECURRING FAIR VALUE MEASUREMENTS	8,948	15,939
Nonrecurring fair value measurements | Collateral dependent impaired loans
ASSETS
Assets, Fair Value Disclosure, Nonrecurring	3,824	8,196
Nonrecurring fair value measurements | Other real estate owned and other foreclosed assets
ASSETS
Assets, Fair Value Disclosure, Nonrecurring	5,124	7,743
Quoted Prices in Active Markets for Identical Assets (Level 1) | Recurring fair value measurements
LIABILITIES
TOTAL RECURRING FAIR VALUE MEASUREMENTS	13,933	11,902
Quoted Prices in Active Markets for Identical Assets (Level 1) | Recurring fair value measurements | Trading Securities [Member]
ASSETS
Trading Securities	489
Quoted Prices in Active Markets for Identical Assets (Level 1) | Recurring fair value measurements | Small Business Administration Pooled Securities [Member]
ASSETS
Securities - available for sale	0
Quoted Prices in Active Markets for Identical Assets (Level 1) | Recurring fair value measurements | Equity securities
ASSETS
Securities - available for sale	13,444	11,902
Significant Other Observable Inputs (Level 2) | Recurring fair value measurements
LIABILITIES
TOTAL RECURRING FAIR VALUE MEASUREMENTS	366,221	331,957
Significant Other Observable Inputs (Level 2) | Recurring fair value measurements | U.S. Government agency securities
ASSETS
Securities - available for sale	39,726	41,486
Significant Other Observable Inputs (Level 2) | Recurring fair value measurements | Agency mortgage-backed securities
ASSETS
Securities - available for sale	230,997	217,678
Significant Other Observable Inputs (Level 2) | Recurring fair value measurements | Agency collateralized mortgage obligations
ASSETS
Securities - available for sale	55,202	63,035
Significant Other Observable Inputs (Level 2) | Recurring fair value measurements | Municipal Bonds [Member]
ASSETS
Securities - available for sale	4,668	5,223
Significant Other Observable Inputs (Level 2) | Recurring fair value measurements | Single issuer trust preferred securities issued by banks and insurers
ASSETS
Securities - available for sale	2,872	2,909
Significant Other Observable Inputs (Level 2) | Recurring fair value measurements | Small Business Administration Pooled Securities [Member]
ASSETS
Securities - available for sale	26,497
Significant Other Observable Inputs (Level 2) | Recurring fair value measurements | Loans held for sale
ASSETS
Securities - available for sale	10,728	6,888
Significant Other Observable Inputs (Level 2) | Recurring fair value measurements | Derivative Financial Instruments, Assets [Member]
ASSETS
Derivative Asset, Fair Value, Gross Asset	18,778	22,688
Significant Other Observable Inputs (Level 2) | Recurring fair value measurements | Derivative instruments
LIABILITIES
Liabilities, Fair Value Disclosure, Recurring	23,247	27,950
Significant Unobservable Inputs (Level 3) | Recurring fair value measurements
LIABILITIES
TOTAL RECURRING FAIR VALUE MEASUREMENTS	$ 1,595	$ 6,321
Significant Unobservable Inputs (Level 3) | Recurring fair value measurements | U.S. Government agency securities
ASSETS
Securities - available for sale
Significant Unobservable Inputs (Level 3) | Recurring fair value measurements | Pooled trust preferred securities issued by banks and insurers
ASSETS
Securities - available for sale	$ 1,595	$ 6,321
Significant Unobservable Inputs (Level 3) | Recurring fair value measurements | Small Business Administration Pooled Securities [Member]
ASSETS
Securities - available for sale	0
Significant Unobservable Inputs (Level 3) | Nonrecurring fair value measurements
LIABILITIES
TOTAL NONRECURRING FAIR VALUE MEASUREMENTS	8,948	15,939
Significant Unobservable Inputs (Level 3) | Nonrecurring fair value measurements | Collateral dependent impaired loans
ASSETS
Assets, Fair Value Disclosure, Nonrecurring	3,824	8,196
Significant Unobservable Inputs (Level 3) | Nonrecurring fair value measurements | Other real estate owned and other foreclosed assets
ASSETS
Assets, Fair Value Disclosure, Nonrecurring	$ 5,124	$ 7,743

Fair Value Measurements (Deta73

Fair Value Measurements (Details 1) - Pooled trust preferred securities - Significant Unobservable Inputs (Level 3) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Reconciliation for all assets and liabilities measured at fair value on a recurring basis
Beginning Balance	$ 6,272	$ 4,967	$ 6,321	$ 3,841
Included in Other Comprehensive Income	12	184	8	1,349
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Sales	(4,679)	0	(4,679)	0
SETTLEMENTS	(10)	(60)	(55)	(99)
Ending Balance	$ 1,595	$ 5,091	$ 1,595	$ 5,091

Fair Value Measurements (Deta74

Fair Value Measurements (Details 2) - USD ($) $ in Thousands	6 Months Ended	12 Months Ended
	Jun. 30, 2015	Dec. 31, 2014
Investments in securities that are classified as level 3
Available-for-sale Securities	$ 375,001	$ 348,554
Discounted cash flow methodology [Member] | Significant Unobservable Inputs (Level 3) | Weighted Average [Member]
Investments in securities that are classified as level 3
Cumulative Prepayment	2.50%	7.00%
Cumulative Default	14.90%	13.90%
Loss Given Default	94.60%	96.10%
Cure Given Default	63.80%	46.70%
Pooled trust preferred securities | Significant Unobservable Inputs (Level 3)
Investments in securities that are classified as level 3
Available-for-sale Securities	$ 1,595	$ 6,321
Pooled trust preferred securities | Discounted cash flow methodology [Member] | Significant Unobservable Inputs (Level 3) | Minimum [Member]
Investments in securities that are classified as level 3
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 | Discounted cash flow methodology [Member] | Significant Unobservable Inputs (Level 3) | Maximum [Member]
Investments in securities that are classified as level 3
Cumulative Prepayment	65.00%	75.00%
Cumulative Default	100.00%	100.00%
Loss Given Default	100.00%	100.00%
Cure Given Default	75.00%	75.00%
Impaired loans | Significant Unobservable Inputs (Level 3)
Investments in securities that are classified as level 3
Fair Value	$ 3,824	$ 8,196
Other real estate owned and other foreclosed assets | Significant Unobservable Inputs (Level 3)
Investments in securities that are classified as level 3
Fair Value	$ 5,124	$ 7,743

Fair Value Measurements (Deta75

Fair Value Measurements (Details 3) - USD ($) $ in Thousands	Jun. 30, 2015	Dec. 31, 2014
ASSETS
Held-to-maturity Securities	$ 428,339	$ 375,453
Held to Maturity, Fair Value, Total	431,778	379,699
Loans, net of allowance for loan losses(b)	5,379,787	4,915,633
LIABILITIES
Federal Home Loan Bank borrowings(c)	108,190	70,080
Customer Repurchase Agreements and other short-term borrowings	119,439	147,890
Wholesale Repurchase Agreements	50,000	50,000
Junior Subordinated Debenture Owed to Unconsolidated Subsidiary Trust	73,576	73,685
Subordinated Debt	35,000	65,000
Time certificates of deposits(c)
LIABILITIES
Time certificates of deposits(c)	725,703	649,620
Accrued Liabilities, Fair Value Disclosure	727,290	651,180
Federal Home Loan Bank borrowings(c)
LIABILITIES
Federal Home Loan Bank borrowings(c)	108,190	70,080
Accrued Liabilities, Fair Value Disclosure	108,712	70,208
Customer repurchase agreements and other short-term borrowings(c)
LIABILITIES
Customer Repurchase Agreements and other short-term borrowings	119,439	147,890
Accrued Liabilities, Fair Value Disclosure	119,439	147,890
Wholesale repurchase agreements(c)
LIABILITIES
Wholesale Repurchase Agreements	50,000	50,000
Accrued Liabilities, Fair Value Disclosure	50,140	50,510
Junior subordinated debentures(d)
LIABILITIES
Junior Subordinated Debenture Owed to Unconsolidated Subsidiary Trust	73,576	73,685
Accrued Liabilities, Fair Value Disclosure	69,375	70,045
Subordinated debentures(c)
LIABILITIES
Subordinated Debt	35,000	65,000
Accrued Liabilities, Fair Value Disclosure	34,617	64,198
Significant Other Observable Inputs (Level 2) | Time certificates of deposits(c)
LIABILITIES
Accrued Liabilities, Fair Value Disclosure	727,290	651,180
Significant Other Observable Inputs (Level 2) | Federal Home Loan Bank borrowings(c)
LIABILITIES
Accrued Liabilities, Fair Value Disclosure	108,712	70,208
Significant Other Observable Inputs (Level 2) | Junior subordinated debentures(d)
LIABILITIES
Accrued Liabilities, Fair Value Disclosure	69,375	70,045
Significant Unobservable Inputs (Level 3) | Customer repurchase agreements and other short-term borrowings(c)
LIABILITIES
Accrued Liabilities, Fair Value Disclosure	119,439	147,890
Significant Unobservable Inputs (Level 3) | Wholesale repurchase agreements(c)
LIABILITIES
Accrued Liabilities, Fair Value Disclosure	50,140	50,510
Significant Unobservable Inputs (Level 3) | Subordinated debentures(c)
LIABILITIES
Accrued Liabilities, Fair Value Disclosure	34,617	64,198
U.S. Treasury securities
ASSETS
Held-to-maturity Securities	1,009	1,010
Held to Maturity, Fair Value, Total	1,070	1,073
U.S. Treasury securities | Significant Other Observable Inputs (Level 2)
ASSETS
Held to Maturity, Fair Value, Total	1,070	1,073
Agency mortgage-backed securities
ASSETS
Held-to-maturity Securities	158,432	159,522
Held to Maturity, Fair Value, Total	162,374	164,944
Agency mortgage-backed securities | Significant Other Observable Inputs (Level 2)
ASSETS
Held to Maturity, Fair Value, Total	162,374	164,944
Agency collateralized mortgage obligations
ASSETS
Held-to-maturity Securities	224,994	198,220
Held to Maturity, Fair Value, Total	224,125	196,584
Agency collateralized mortgage obligations | Significant Other Observable Inputs (Level 2)
ASSETS
Held to Maturity, Fair Value, Total	224,125	196,584
State, county, and municipal securities
ASSETS
Held-to-maturity Securities	225	424
Held to Maturity, Fair Value, Total	227	428
State, county, and municipal securities | Significant Other Observable Inputs (Level 2)
ASSETS
Held to Maturity, Fair Value, Total	227	428
Single issuer trust preferred securities issued by banks
ASSETS
Held-to-maturity Securities	1,500	1,500
Held to Maturity, Fair Value, Total	1,500	1,477
Single issuer trust preferred securities issued by banks | Significant Other Observable Inputs (Level 2)
ASSETS
Held to Maturity, Fair Value, Total	1,500	1,477
Small Business Administration Pooled Securities [Member]
ASSETS
Held-to-maturity Securities	37,178	9,775
Held to Maturity, Fair Value, Total	37,416	10,074
Small Business Administration Pooled Securities [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1)
ASSETS
Held to Maturity, Fair Value, Total	0	0
Small Business Administration Pooled Securities [Member] | Significant Other Observable Inputs (Level 2)
ASSETS
Held to Maturity, Fair Value, Total	37,416	10,074
Small Business Administration Pooled Securities [Member] | Significant Unobservable Inputs (Level 3)
ASSETS
Held to Maturity, Fair Value, Total	0	0
Corporate debt securities
ASSETS
Held-to-maturity Securities	5,001	5,002
Held to Maturity, Fair Value, Total	5,066	5,119
Corporate debt securities | Significant Other Observable Inputs (Level 2)
ASSETS
Held to Maturity, Fair Value, Total	5,066	5,119
Loans, net of allowance for loan losses(b)
ASSETS
Loans, net of allowance for loan losses(b)	5,379,787	4,915,633
Loans Receivable, Fair Value Disclosure	5,309,323	4,883,479
Loans, net of allowance for loan losses(b) | Significant Unobservable Inputs (Level 3)
ASSETS
Loans Receivable, Fair Value Disclosure	$ 5,309,323	$ 4,883,479

Comprehensive Income_Loss (Comp

Comprehensive Income/Loss (Comprehensive Income/(Loss) Presented Net of Taxes) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
COMPREHENSIVE INCOME
Change in fair value of securities available for sale, pre tax amount	$ (3,910)	$ 3,904	$ (1,369)	$ 7,191
Change in fair value of securities available for sale, tax (expense) benefit	1,496	(1,521)	516	(2,837)
Change in fair value of securities available for sale, after tax amount	(2,414)	2,383	(853)	4,354
Net Security Gains Losses Reclassified Into Earnings Before Tax Amount	(315)	(20)	(315)	71
Net Security Gains Losses Reclassified Into Earnings Tax Amount	129	8	129	(29)
Net Security Gains Losses Reclassified Into Earnings Net Of Tax Amount	(186)	(12)	(186)	42
Change in fair value of securities available for sale, pre tax amount	(3,595)	3,924	(1,054)	7,120
Change in fair value of securities available for sale, tax (expense) benefit	1,367	(1,529)	387	(2,808)
Change in fair value of securities available for sale, after tax amount	(2,228)	2,395	(667)	4,312
Change in fair value of cash flow hedges, pre tax amount	(36)	(487)	(603)	(787)
Change in fair value of cash flow hedges, tax (expense) benefit	(3)	200	228	323
Change in fair value of cash flow hedges, after tax amount	(39)	(287)	(375)	(464)
Less: net cash flow hedge losses reclassified into interest on borrowings expense, pre tax amount	(709)	(1,063)	(1,415)	(2,211)
Less: net cash flow hedge losses reclassified into earnings, tax (expense) benefit	288	434	576	903
Less: net cash flow hedge losses reclassified into interest on borrowings expense, after tax	(421)	(629)	(839)	(1,308)
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI for Loss on Termination of Derivatives, before Tax	0	(1,122)		(1,122)
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI for Loss on Termination of Derivatives, Tax		459		459
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI for Loss on Termination of Derivatives, Net of Tax		(663)		(663)
Net change in fair value of cash flow hedges, pre tax amount	673	1,698	812	2,546
Net change in fair value of cash flow hedges, tax (expense) benefit	(291)	(693)	(348)	(1,039)
Net change in fair value of cash flow hedges	382	1,005	464	1,507
Other Comprehensive Income (Loss), Pension and Other Postretirement Benefit Plans, Net Unamortized Gain (Loss) Arising During Period, before Tax	43	(80)	87	(160)
Other Comprehensive Income (Loss), Pension and Other Postretirement Benefit Plans, Net Unamortized Gain (Loss) Arising During Period, Tax	(32)	33	(50)	66
Other Comprehensive Income (Loss), Pension and Other Postretirement Benefit Plans, Net Unamortized Gain (Loss) Arising During Period, Net of Tax	11	(47)	37	(94)
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI, Pension and Other Postretirement Benefit Plans, for Net Gain (Loss), before Tax	60	(11)	121	(22)
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI, Pension and Other Postretirement Benefit Plans, for Net Gain (Loss), Tax	(24)	4	(49)	8
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI, Pension and Other Postretirement Benefit Plans, for Net Gain (Loss), Net of Tax	36	(7)	72	(14)
Amortization of certain costs included in net periodic retirement costs, pre tax amount	128	25	152	50
Amortization of certain costs included in net periodic retirement costs, tax (expense) benefit	(52)	(10)	(62)	(20)
Other Comprehensive (Income) Loss, Amortization Adjustment from AOCI, Pension and Other Postretirement Benefit Plans, for Net Prior Service Cost (Credit), Net of Tax	76	15	90	30
Other Comprehensive (Income) Loss, Pension and Other Postretirement Benefit Plans, Adjustment, before Tax	231	(66)	360	(132)
Other Comprehensive (Income) Loss, Pension and Other Postretirement Benefit Plans, Tax	(108)	27	(161)	54
Other Comprehensive (Income) Loss, Pension and Other Postretirement Benefit Plans, Adjustment, Net of Tax	123	(39)	199	(78)
Total other comprehensive income, pre tax amount	(2,691)	5,556	118	9,534
Total other comprehensive income, tax (expense) benefit	968	(2,195)	(122)	(3,793)
Total other comprehensive income, after tax amount	$ (1,723)	$ 3,361	$ (4)	$ 5,741

Comprehensive Income_Loss (Co77

Comprehensive Income/Loss (Comprised of the following Components) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning Balance			$ (2,132)	$ (7,434)
Net change in other comprehensive income (loss)	$ (1,723)	$ 3,361	(4)	5,741
Ending Balance	(2,136)	(1,693)	(2,136)	(1,693)
Unrealized Gain on Securities
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning Balance			3,389	(2,023)
Net change in other comprehensive income (loss)			(667)	4,312
Ending Balance	2,722	2,289	2,722	2,289
Unrealized Loss on Cash Flow Hedge
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning Balance			(3,298)	(5,698)
Net change in other comprehensive income (loss)			536	1,579
Ending Balance	(2,762)	(4,119)	(2,762)	(4,119)
Deferred Gain on Hedge Transactions
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning Balance			571	715
Net change in other comprehensive income (loss)			(72)	(72)
Ending Balance	499	643	499	643
Defined Benefit Postretirement Plans
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning Balance			(2,794)	(428)
Net change in other comprehensive income (loss)			199	(78)
Ending Balance	$ (2,595)	$ (506)	$ (2,595)	$ (506)

Comprehensive Income_Loss (Deta

Comprehensive Income/Loss (Details Textual) (Details) - USD ($)	Jun. 30, 2015	Dec. 31, 2014	Dec. 31, 2012
Equity [Abstract]
Gain on interest rate swaps	$ 499,143	$ 643,000	$ 1,400,000

Commitments and contingencies F

Commitments and contingencies Financial Instruments with Off-Balance Sheet Risk (Details) - USD ($) $ in Thousands	Jun. 30, 2015	Dec. 31, 2014
Commitments to Extend Credit [Member]
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Fair Value Disclosure, Off-balance Sheet Risks, Face Amount, Liability	$ 1,954,345	$ 1,822,369
Standby Letters of Credit [Member]
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Fair Value Disclosure, Off-balance Sheet Risks, Face Amount, Liability	19,151	18,516
Deferred standby letter of credit fees [Member]
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Fair Value Disclosure, Off-balance Sheet Risks, Face Amount, Liability	$ 114	$ 105

Commitments and contingencies T

Commitments and contingencies Textual (Details) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014	Dec. 31, 2014
Other Commitments [Line Items]
Operating Leases, Rent Expense	$ 2,000,000	$ 2,000,000	$ 3,900,000	$ 3,800,000
Cash Reserve Deposit Required and Made	13,000,000		$ 13,000,000		$ 33,000,000
Minimum [Member]
Other Commitments [Line Items]
Operating Leases, Lease Renewal Period Option			1 year
Maximum [Member]
Other Commitments [Line Items]
Operating Leases, Lease Renewal Period Option			10 years
Affiliated Entity [Member]
Other Commitments [Line Items]
Operating Leases, Rent Expense	$ 0	$ 62,000	$ 0	$ 124,000

Investments is Low Income Hou81

Investments is Low Income Housing Tax Credits Investments in Qualified Affordable Housing Projects (Details) - USD ($) $ in Thousands	6 Months Ended	12 Months Ended
	Jun. 30, 2015	Dec. 31, 2014
Investments in Affordable Housing Projects [Abstract]
Original investment value	$ 39,486	$ 40,541
Amortization Method Qualified Affordable Housing Project Investments	36,500	38,943
Capital commitment relating to low income housing project investments	14,677	28,004
Tax credits and benefits (1)	4,314	1,683
Amortization of investments (2)	2,912	1,089
Net income tax benefit (3)	$ 1,402	$ 594

Uncategorized Items - indb-2015

Label	Element	Value
Gain Realized on Life Insurance Policies	indb_GainRealizedOnLifeInsurancePolicies	$ 0
Gain Realized on Life Insurance Policies	indb_GainRealizedOnLifeInsurancePolicies	$ 337