FirstMerit (FMER) 10-Q 29 Jul 16 2016 Q2 Quarterly report Financial data

Document and Entity Information

Document and Entity Information - shares	6 Months Ended
	Jun. 30, 2016	Jul. 27, 2016
Document and Entity Information [Abstract]
Entity Registrant Name	FIRSTMERIT CORP /OH/
Entity Central Index Key	354,869
Current Fiscal Year End Date	--12-31
Entity Filer Category	Large Accelerated Filer
Document Type	10-Q
Document Period End Date	Jun. 30, 2016
Document Fiscal Year Focus	2,016
Document Fiscal Period Focus	Q2
Amendment Flag	false
Entity Common Stock, Shares Outstanding		166,167,956

Consolidated Balance Sheets

Consolidated Balance Sheets - USD ($) $ in Thousands	Jun. 30, 2016	Dec. 31, 2015	Jun. 30, 2015
ASSETS
Cash and due from banks	$ 420,818	$ 380,799	$ 472,848
Interest-bearing deposits in banks	103,469	83,018	114,741
Total cash and cash equivalents	524,287	463,817	587,589
Investment securities:
Held-to-maturity	2,514,161	2,674,093	2,787,513
Available-for-sale	4,318,688	3,967,735	3,838,509
Other investments	148,367	148,172	147,967
Loans held for sale	3,962	5,472	5,432
Loans	16,343,606	16,076,945	15,705,110
Allowance for loan losses	(149,649)	(153,691)	(148,259)
Net loans	16,193,957	15,923,254	15,556,851
Premises and equipment, net	293,209	319,488	313,819
Goodwill	741,740	741,740	741,740
Intangible assets	56,020	60,628	65,824
Covered other real estate	940	2,134	1,065
Accrued interest receivable and other assets	1,355,256	1,218,071	1,250,705
Total assets	26,150,587	25,524,604	25,297,014
Deposits:
Noninterest-bearing	6,011,531	5,942,248	5,725,850
Interest-bearing	3,477,483	3,476,729	3,304,969
Savings and money market accounts	9,354,868	8,450,123	8,418,716
Certificates and other time deposits	2,108,761	2,238,903	2,224,315
Total deposits	20,952,643	20,108,003	19,673,850
Federal funds purchased and securities sold under agreements to repurchase	686,890	1,037,075	1,519,250
Wholesale borrowings	468,447	580,648	366,074
Long-term debt	526,389	505,173	497,393
Accrued taxes, expenses and other liabilities	469,059	353,610	352,490
Total liabilities	23,103,428	22,584,509	22,409,057
Shareholders' equity:
5.875% Non-Cumulative Perpetual Preferred Stock, Series A, without par value: authorized 115,000 shares; 100,000 issued	100,000	100,000	100,000
Common Stock warrant	0	0	0
Common Stock, without par value; authorized 300,000,000 shares; issued: June 30, 2016, December 31, 2015 and June 30, 2015 - 170,183,515 shares	127,937	127,937	127,937
Capital surplus	1,383,266	1,386,677	1,379,194
Accumulated other comprehensive loss	(29,473)	(79,274)	(67,621)
Retained earnings	1,572,681	1,519,438	1,462,859
Treasury stock, at cost: June 30, 2016 - 4,014,513; December 31, 2015 - 4,425,927; June 30, 2015 - 4,410,939 shares	(107,252)	(114,683)	(114,412)
Total shareholders' equity	3,047,159	2,940,095	2,887,957
Total liabilities and shareholders' equity	$ 26,150,587	$ 25,524,604	$ 25,297,014

Consolidated Balance Sheets (Pa

Consolidated Balance Sheets (Parenthetical) - shares	Jun. 30, 2016	Dec. 31, 2015	Jun. 30, 2015
Statement of Financial Position [Abstract]
Common stock, shares authorized	300,000,000	300,000,000	300,000,000
Common stock, shares issued	170,183,515	170,183,515	170,183,515
Non-cumulative Perpetual Preferred Stock, Series A, Shares Authorized	115,000	115,000	115,000
Non-Cumulative Perpetual Preferred stock, Series A, Shares Outstanding	100,000	100,000	100,000
Treasury stock, at cost	4,014,513	4,425,927	4,410,939

Consolidated Statements of Inco

Consolidated Statements of Income - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Interest income:
Loans and loans held for sale	$ 162,977	$ 161,872	$ 325,255	$ 323,411
Investment securities:
Taxable	33,350	32,175	66,499	64,125
Tax-exempt	5,013	5,327	10,274	11,353
Total investment securities interest	38,363	37,502	76,773	75,478
Total interest income	201,340	199,374	402,028	398,889
Deposits:
Interest bearing	1,013	783	1,942	1,550
Savings and money market accounts	5,641	5,588	11,293	11,135
Certificates and other time deposits	3,116	2,510	6,405	4,687
Federal funds purchased and securities sold under agreements to repurchase	109	329	374	572
Wholesale borrowings	1,121	1,129	2,355	2,289
Long-term debt	4,262	3,917	8,425	7,915
Total interest expense	15,262	14,256	30,794	28,148
Net interest income	186,078	185,118	371,234	370,741
Provision for loan losses	6,391	8,966	14,200	17,214
Net interest income after provision for loan losses	179,687	176,152	357,034	353,527
Noninterest income:
Trust department income	11,167	10,820	21,451	20,969
Service charges on deposits	16,263	16,704	31,849	32,372
Credit card fees	14,942	14,124	28,520	26,773
ATM and other service fees	6,427	6,345	12,661	12,444
Bank owned life insurance income	4,186	3,697	7,882	7,289
Investment services and insurance	3,851	3,871	7,756	7,575
Investment securities gains/(losses), net	2,164	567	2,459	921
Loan sales and servicing income	1,995	3,276	3,847	4,876
Other operating income	4,120	7,178	16,084	19,210
Total noninterest income	65,115	66,582	132,509	132,429
Noninterest expense:
Salaries, wages, pension and employee benefits	86,789	86,020	172,669	176,546
Net occupancy expense	13,466	13,727	28,240	29,681
Equipment expense	12,078	12,592	24,486	23,617
Stationery, supplies and postage	2,945	3,370	6,564	6,898
Bankcard, loan processing and other costs	12,269	12,461	23,277	23,600
Professional services	4,467	5,358	12,818	9,368
Amortization of intangibles	2,304	2,598	4,608	5,196
FDIC insurance expense	5,192	5,077	10,637	10,244
Other operating expense	20,810	20,471	43,984	37,176
Total noninterest expense	160,320	161,674	327,283	322,326
Income before income tax expense	84,482	81,060	162,260	163,630
Income tax expense	26,173	24,476	49,815	49,907
Net income	58,309	56,584	112,445	113,723
Less: Net income allocated to participating shareholders	496	467	955	937
Preferred Stock dividends	1,469	1,469	2,938	2,938
Net income attributable to common shareholders	56,344	54,648	108,552	109,848
Net income used in diluted EPS calculation	$ 56,344	$ 54,648	$ 108,552	$ 109,848
Weighted average number of common shares outstanding - basic	166,188	165,736	165,966	165,574
Weighted average number of common shares outstanding - diluted	166,807	166,277	166,563	166,089
Basic earnings per common share (in dollars per share)	$ 0.34	$ 0.33	$ 0.65	$ 0.66
Diluted earnings per common share (in dollars per share)	0.34	0.33	0.65	0.66
Cash dividend per common share (in dollars per share)	$ 0.17	$ 0.16	$ 0.34	$ 0.32

Consolidated Statements of Comp

Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Statement of Comprehensive Income [Abstract]
Net Income, Pretax	$ 84,482	$ 81,060	$ 162,260	$ 163,630
Net Income, Tax	26,173	24,476	49,815	49,907
Net income	58,309	56,584	112,445	113,723
Changes in unrealized securities' holding gains/(losses), before Tax	31,489	(28,642)	79,868	5,475
Changes in unrealized securities' holding gains/(losses), Tax	11,431	(10,024)	28,994	1,916
Changes in unrealized securities' holding gains/(losses), After-tax	20,058	(18,618)	50,874	3,559
Changes in unrealized securities' holding gains/(losses) that result from securities being transferred from available-for-sale to held-to-maturity, before Tax	(221)	(575)	(1,072)	(1,079)
Changes in unrealized securities' holding gains/(losses) that result from securities being transferred from available-for-sale to held-to-maturity, Tax	(79)	(203)	(14)	(378)
Changes in unrealized securities' holding gains/(losses) that result from securities being transferred from available-for-sale to held-to-maturity , Net of Tax	(142)	(372)	(1,058)	(701)
Net losses/(gains) realized on sale of securities reclassified to noninterest income, before Tax	(2,164)	(567)	(2,459)	(921)
Net losses/(gains) realized on sale of securities reclassified to noninterest income, Tax	(786)	(198)	(892)	(322)
Net losses/(gains) realized on sale of securities reclassified to noninterest income, Net of Tax	1,378	369	1,567	599
Net change in unrealized gains/(losses) on securities available for sale, before Tax	29,104	(29,784)	76,337	3,475
Net change in unrealized gains/(losses) on securities available for sale, Tax	10,566	(10,425)	28,088	1,216
Net change in unrealized gains/(losses) on securities available for sale, Net of Tax	18,538	(19,359)	48,249	2,259
Amortization of actuarial losses/(gains), before Tax	1,076	1,138	3,244	2,276
Amortization of actuarial losses/(gains), Tax	390	399	1,163	797
Amortization of actuarial losses/(gains), Net of Tax	686	739	2,081	1,479
Amortization of prior service cost reclassified to other noninterest expense, before Tax	(560)	410	(820)	820
Amortization of prior service cost reclassified to other noninterest expense, Tax	(204)	144	(291)	287
Amortization of prior service cost reclassified to other noninterest expense, After-tax	(356)	266	(529)	533
Net change from defined benefit pension plans, before Tax	516	1,548	2,424	3,096
Net change from defined benefit pension plans, Tax	186	543	872	1,084
Net change from defined benefit pension plans, Net of Tax	330	1,005	1,552	2,012
Total other comprehensive gains/(losses), before Tax	29,620	(28,236)	78,761	6,571
Total other comprehensive gains/(losses), Tax	10,752	(9,882)	28,960	2,300
Total other comprehensive gains/(losses), Net of Tax	18,868	(18,354)	49,801	4,271
Comprehensive Income, before Tax, Portion Attributable to Parent	114,102	52,824	241,021	170,201
Comprehensive Income, Tax, Portion Attributable to Parent	36,925	14,594	78,775	52,207
Comprehensive Income (Loss), Net of Tax, Attributable to Parent	$ 77,177	$ 38,230	$ 162,246	$ 117,994

Consolidated Statements of Chan

Consolidated Statements of Changes in Shareholders' Equity - USD ($) $ in Thousands	Total	Preferred Stock	Common Stock	Warrant	Capital Surplus	Accumulated Other Comprehensive Income (Loss)	Retained Earnings	Treasury Stock
Beginning Balance at Dec. 31, 2014	$ 2,834,281	$ 100,000	$ 127,937	$ 3,000	$ 1,393,090	$ (71,892)	$ 1,404,717	$ (122,571)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	113,723						113,723
Other comprehensive income	4,271					4,271
Comprehensive income	117,994					4,271	113,723
Cash dividends - Preferred Stock	(2,938)						(2,938)
Cash dividends - common stock	(52,643)						(52,643)
Nonvested (restricted) shares granted	0				(14,340)			14,340
Restricted Stock Activity	(4,253)				1,291			(5,544)
Deferred compensation trust	0				637			(637)
Share-based compensation	7,666				7,666
Adjustments to Additional Paid in Capital, Warrant Issued				(3,000)
Adjustments to Additional Paid in Capital, Other					(9,150)
Repurchase of common stock warrant	(12,150)
Ending Balance at Jun. 30, 2015	2,887,957	100,000	127,937	0	1,379,194	(67,621)	1,462,859	(114,412)
Beginning Balance at Dec. 31, 2015	2,940,095	100,000	127,937	0	1,386,677	(79,274)	1,519,438	(114,683)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	112,445			0		0	112,445
Other comprehensive income	49,801					49,801
Comprehensive income	162,246	0	0	0	0	49,801	112,445	0
Cash dividends - Preferred Stock	(2,938)	0	0	0	0	0	(2,938)	0
Cash dividends - common stock	(56,264)			0			(56,264)
Nonvested (restricted) shares granted	0			0	(12,900)			12,900
Restricted Stock Activity	(4,177)			0	701			(4,878)
Deferred compensation trust	0			0	591			(591)
Share-based compensation	8,197			0	8,197			0
Adjustments to Additional Paid in Capital, Other	(9,200)
Repurchase of common stock warrant	0
Ending Balance at Jun. 30, 2016	$ 3,047,159	$ 100,000	$ 127,937	$ 0	$ 1,383,266	$ (29,473)	$ 1,572,681	$ (107,252)

Consolidated Statements of Cha7

Consolidated Statements of Changes in Shareholders' Equity (Parenthetical) - $ / shares	6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015
Statement of Stockholders' Equity [Abstract]
Cash dividend per common share (in dollars per share)	$ 0.34	$ 0.32
Options exercised in the period	0	0
Nonvested (restricted) shares granted	633,286	659,432
Restricted stock activity	(221,872)	(276,805)
Deferred compensation trust	(109,130)	(234,703)

Consolidated Statements of Cash

Consolidated Statements of Cash Flows - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015
Operating Activities
Net income	$ 112,445	$ 113,723
Adjustments to reconcile net income to net cash provided and used by operating activities:
Provision for loan losses	14,200	17,214
Provision/(benefit) for deferred income taxes	22,893	4,162
Depreciation and amortization	32,635	31,274
Benefit attributable to FDIC loss share	257	6,046
Accretion of acquired loans	(33,978)	(51,170)
Amortization and accretion of investment securities, net
Available-for-sale	5,062	5,407
Held-to-maturity	1,866	2,110
Losses/(gains) on sales and calls of available-for-sale investment securities, net	(2,756)	(921)
Originations of loans held for sale	(14,060)	(51,673)
Proceeds from sales of loans, primarily mortgage loans sold in the secondary markets	15,938	60,429
Gains on sales of loans, net	(368)	(760)
Amortization of intangible assets	4,608	5,196
Recognition of stock compensation expense	8,197	7,666
Net decrease/(increase) in other assets	(171,074)	1,442
Net increase/(decrease) in other liabilities	142,897	(1,519)
NET CASH PROVIDED BY OPERATING ACTIVITIES	138,762	148,626
Proceeds from sale of investment securities
Available-for-sale	(113)	171,725
Held-to-maturity	0	668
Other	0	1,015
Proceeds from prepayments, calls, and maturities of investment securities
Available-for-sale	319,566	285,541
Held-to-maturity	214,489	211,636
Other	0	165
Purchases of investment securities
Available-for-sale	(616,645)	(758,486)
Held-to-maturity	(57,469)	(94,756)
Other	(221)	(172)
Net decrease/(increase) in loans and leases	(262,863)	(356,117)
Purchases of premises and equipment	(2,412)	(9,950)
Sales of premises and equipment	8,501	8,407
NET CASH PROVIDED/(USED) BY INVESTING ACTIVITIES	(397,167)	(540,324)
Financing Activities
Net increase in demand accounts	70,037	215,269
Net increase/(decrease) in savings and money market accounts	904,745	19,104
Net decrease in certificates and other time deposits	(130,142)	(65,188)
Net increase/(decrease) in securities sold under agreements to repurchase	(350,185)	246,659
Net increase/(decrease) in wholesale borrowings	(112,201)	(61,997)
Repurchase of common stock warrant	0	(12,150)
Cash dividends - common	(56,264)	(52,643)
Cash dividends - preferred	(2,938)	(2,938)
Restricted stock activity	(4,177)	(4,253)
NET CASH PROVIDED/(USED) BY FINANCING ACTIVITIES	318,875	281,863
Increase/(Decrease) in cash and cash equivalents	60,470	(109,835)
Cash and cash equivalents at beginning of year	463,817	697,424
Cash and cash equivalents at end of year	524,287	587,589
Cash paid during period for:
Interest	30,920	27,970
Federal income taxes	$ 4,859	$ 26,125

Significant Accounting Policies

Significant Accounting Policies	6 Months Ended
	Jun. 30, 2016
Accounting Policies [Abstract]
Significant Accounting Policies	FirstMerit Corporation and subsidiaries is a diversified financial services company headquartered in Akron, Ohio with 359 banking offices in the Ohio, Michigan, Wisconsin, Illinois, and Pennsylvania areas. The Corporation provides a complete range of banking and other financial services to consumers and businesses through its core operations. On January 26, 2016, the Corporation and Huntington Bancshares Incorporated (“Huntington”)announced the signing of a definitive merger agreement under which the Corporation will merge into a subsidiary of Huntington in a stock and cash transaction. Based on the closing price of Huntington's common shares on January 25, 2016 of $8.80 , the total transaction value is approximately $3.40 billion , including outstanding options and other equity-linked securities. Under the terms of the definitive merger agreement, the Corporation will merge with a subsidiary of Huntington Bancshares, and FirstMerit Bank will merge with and into The Huntington National Bank. In conjunction with the closing of the transaction, four independent members of the Corporation’s Board of Directors will join the Huntington Board, which will be expanded accordingly. Shareholders of the Corporation will receive 1.72 shares of Huntington common stock, and $5.00 in cash, for each share of the Corporation common stock. The per share consideration is valued at $20.14 per share based on the closing price of Huntington Common Stock on January 25, 2016. The respective shareholders of Huntington and the Corporation approved the proposed merger of FirstMerit into Huntington during special meetings held on June 13, 2016 in Akron, Ohio by FirstMerit and in Columbus, Ohio by Huntington. The transaction is expected to be completed in the third quarter of 2016, subject to the satisfaction of customary closing conditions, including regulatory approvals. Summary of Significant Accounting Policies Unless otherwise indicated, defined terms and abbreviations used herein have the meanings set forth in the accompanying Glossary of Acronyms and Abbreviations. Basis of Presentation - FirstMerit Corporation is a BHC whose principal asset is the Common Stock of its wholly-owned subsidiary, FirstMerit Bank, N. A. The Parent Company’s other subsidiaries include Citizens Savings Corporation of Stark County, FirstMerit Capital Trust I, and FirstMerit Risk Management, Inc. All significant intercompany balances and transactions have been eliminated in consolidation. The accounting and reporting policies of the Corporation conform to GAAP and to general practices within the financial services industry. The Consolidated Balance Sheet at December 31, 2015 has been derived from the audited consolidated financial statements at that date. The accompanying unaudited interim financial statements reflect all adjustments (consisting only of normally recurring adjustments) that are, in the opinion of Management, necessary for a fair statement of the results for the interim periods presented. Certain reclassifications of prior year’s amounts have been made to conform to the current year presentation. Such reclassifications had no effect on net earnings or equity. Certain information and note disclosures normally included in financial statements prepared in accordance with GAAP have been omitted in accordance with the rules of the SEC. The unaudited consolidated financial statements of the Corporation as of June 30, 2016 and 2015 are not necessarily indicative of the results that may be achieved for the full fiscal year or for any future period. These unaudited consolidated financial statements should be read in conjunction with the audited consolidated financial statements and notes included in the Corporation’s Annual Report on Form 10-K for the year ended December 31, 2015 (the “ 2015 Form 10-K”). There have been no significant changes in the current quarter to the Corporation’s accounting policies as disclosed in the 2015 Form 10-K. In preparing these accompanying unaudited interim consolidated financial statements, subsequent events were evaluated through the time the consolidated financial statements were issued. Recently Adopted Accounting Standards FASB ASU 2015-16, Business Combinations (Topic 805), Simplifying the Accounting for Measurement-Period Adjustments. The amendments in ASU 2015-16 require an entity to present separately on the face of the income statement or disclose in the notes the portion of the amount recorded in current-period earnings by line item that would have been recorded in previous reporting periods if the adjustment to the provisional amounts had been recognized as of the acquisition date. For public business entities, the amendments in this update are effective for fiscal years beginning after December 15, 2015, including interim periods within those fiscal years. The amendments in this update will be applied prospectively to adjustments to provisional amounts that occur after the effective date of this update with earlier application permitted for financial statements that have not been issued. The adoption of this guidance did not have a material effect on the Corporation's financial position or results of operations. FASB ASU 2015-5 , Intangibles—Goodwill and Other—Internal-Use Software (Subtopic 350-40): Customer’s Accounting for Fees Paid in a Cloud Computing Arrangement. The amendments in ASU 2015-05 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 GAAP for a customer’s accounting for service contracts. In addition, the guidance in this update supersedes 350-40-25-16. Consequently, all software licenses within the scope of Subtopic 350-40 will be accounted for consistent with other licenses of intangible assets. The amendments are effective for public business entities for annual and interim periods within those annual periods, beginning after December 15, 2015. An entity can elect to adopt the amendments either (1) prospectively to all arrangements entered into or materially modified after the effective date or (2) retrospectively. For prospective transition, the only disclosure requirements at transition are the nature of and reason for the change in accounting principle, the transition method, and a qualitative description of the financial statement line items affected by the change. For retrospective transition, the disclosure requirements at transition include the requirements for prospective transition and quantitative information about the effects of the accounting change. The adoption of this guidance did not have a material effect on the Corporation's financial position or results of operations. FASB ASU 2015-2, Amendments to the Consolidation Analysis . The amendments in ASU 2015-02 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. These amendments modify the current accounting guidance to address limited partnerships and similar entities, certain investments funds, fees paid to a decision maker or service provider, and the impact of fee arrangements and related parties on the primary beneficiary determination. The amendments are effective for public business entities for fiscal years, and for interim periods within those fiscal years, beginning after December 15, 2015. Early adoption is permitted, including adoption in an interim period. If an entity early adopts the amendments in an interim period, any adjustments should be reflected as of the beginning of the fiscal year that includes that interim period. A reporting entity may apply the amendments using a modified retrospective approach by recording a cumulative-effect adjustment to equity as of the beginning of the fiscal year of adoption. A reporting entity also may apply the amendments retrospectively. The adoption of this guidance did not have a material effect on the Corporation's financial position or results of operations. FASB ASU 2014–12, Accounting for Share-Based Payments When the Terms of an Award Provide That a Performance Target Could Be Achieved After the Requisite Service Period — a consensus of the FASB Emerging Issues Task Force. The amendments in this update clarify that entities should treat performance targets that can be met after the requisite service period of a share-based payment award as performance conditions that affect vesting. Therefore, an entity would not record compensation expense (measured as of the grant date without taking into account the effect of the performance target) related to an award for which transfer to the employee is contingent on the entity’s satisfaction of a performance target until it becomes probable that the performance target will be met. The ASU does not contain any new disclosure requirements. The ASU is effective for interim and annual reporting periods beginning after December 15, 2015. Early adoption is permitted. In addition, entities will have the option of applying the guidance either prospectively (i.e., only to awards granted or modified on or after the effective date) or retrospectively. Retrospective application would only apply to awards with performance targets outstanding at or after the beginning of the first annual period presented (i.e., the earliest presented comparative period). The adoption of this guidance did not have a material effect on the Corporation's financial position or results of operations. Recently Issued Accounting Standards ASU 2016-13, Financial Instruments-Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments. The amendments in this update replace the incurred loss impairment methodology in current GAAP with a methodology that reflects expected credit losses and requires consideration of a broader range of reasonable and supportable information to inform credit loss estimates. The amendments will require a financial asset (or group of financial assets) measured at amortized cost basis to be presented at the net amount expected to be collected. The amendments will also limit the amount of the allowance for credit losses to the amount by which fair value is below amortized cost because the classification as available for sale is premised on an investment strategy that recognizes that the investment could be sold at fair value, if cash collection would result in the realization of an amount less than fair value. The amendments require changes to presentational matters, such as presenting credit losses as an allowance rather than a write-down. The amendments in ASU 2016-13 retain many of the disclosure amendments in Accounting Standards Update No. 2010-20, Receivables (Topic 310): Disclosures about the Credit Quality of Financing Receivables and the Allowance for Credit Losses, updated to reflect the change from an incurred loss methodology to an expected credit loss methodology. In addition, disclosures of credit quality indicators in relation to the amortized cost of financing receivables are further disaggregated by year of origination (or vintage). The amendments in this update are effective for fiscal years beginning after December 15, 2019, including interim periods within those fiscal years for public business entities. Early adoption is permitted as of the fiscal years beginning after December 15, 2018, including interim periods within those fiscal years using a cumulative-effect adjustment to retained earnings as of the beginning of the first reporting period in which the guidance is effective (i.e., a modified-retrospective approach) or a prospective transition approach for debt securities for which an other-than-temporary impairment had been recognized before the effective date. The Corporation is in process of assessing the potential impact the adoption of this guidance will have on its consolidated financial statements and related disclosures. ASU 2016-12, Revenue from Contracts with Customers (Topic 606): Narrow-Scope Improvements and Practical Expedients. This update amends the new revenue recognition guidance on assessing collectability, presentation of sales taxes, noncash consideration, and completed contracts and contract modifications at transition. The amendments in this update clarify that, for a contract to be considered completed at transition, substantially all of the revenue must have been recognized under legacy GAAP. This update also includes a practical expedient to ease transition for contracts that were modified prior to adoption of the revenue standard under both the full and modified retrospective transition approaches. The amendments clarify how an entity should evaluate the collectibility threshold and when an entity can recognize nonrefundable consideration received as revenue if an arrangement does not meet the standard’s contract criteria. They also clarify that the fair value of noncash consideration should be measured at contract inception when determining the transaction price. The amendments also allow an entity to make an accounting policy election to exclude from the transaction price certain types of taxes collected from a customer if it discloses that policy. The effective date and transition requirements for this update are the same as those of the new standard. The Corporation is in process of assessing the potential impact the adoption of this guidance will have on its consolidated financial statements and related disclosures. ASU 2016-11, Revenue Recognition (Topic 605) and Derivatives and Hedging (Topic 815): Rescission of SEC Guidance Because of Accounting Standards Updates 2014-09 and 2014-16 Pursuant to Staff Announcements at the March 3, 2006 EITF Meeting (SEC Update) . The amendments in this update rescinds the following SEC Staff Observer comments that relate to narrow revenue recognition issues from ASC 605, Revenue Recognition , and ASC 932, Extractive Activities — Oil and Ga s, upon an entity’s adoption of ASC 606: Revenue and Expense Recognition for Freight Services in Process, Accounting for Shipping and Handling Fees and Costs, Accounting for Consideration Given by a Vendor to a Customer (including a Reseller of the Vendor’s Products), and Accounting for Gas Balancing Arrangements . The ASU also rescinds the SEC Staff Announcement: Determining the Nature of a Host Contract Related to a Hybrid Instrument Issued in the Form of a Share under Topic 815 , issued as EITF Topic D-109 and codified in ASC 815-10-S99-3, as of the effective date of ASU 2014-16, Derivatives and Hedging (Topic 815): Determining Whether the Host Contract in a Hybrid Financial Instrument Issued in the Form of a Share is More Akin to Debt or to Equity . The effective date and transition requirements for this update are the same as those of the new standard. The Corporation is in process of assessing the potential impact the adoption of this guidance will have on its consolidated financial statements and related disclosures. ASU 2016-10, Revenue from Contracts with Customers (Topic 606): Identifying Performance Obligations and Licensing . This update amends the new revenue recognition guidance on accounting for licenses of intellectual property and identifying performance obligations. The amendments clarify how an entity should evaluate the nature of its promise in granting a license of intellectual property, which will determine whether it recognizes revenue over time or a point in time. The amendments also clarify when a promised good or service is separately identifiable, that is distinct within the context of the contract, and allow entities to disregard items that are immaterial in the context of a contract. The effective date and transition requirements for this update are the same as those of the new standard. For public business entities, the amendments in this update are effective for annual reporting periods beginning after December 15, 2017, with early adoption permitted, but not before December 15, 2016. The amendments can be adopted using either the full retrospective approach or a modified retrospective approach. The Corporation is in process of assessing the potential impact the adoption of this guidance will have on its consolidated financial statements and related disclosures. FASB ASU 2016-09, Compensation - Stock Compensation (Topic 718): Improvements to Employee Share-Based Payment Accounting . The amendments in ASU 2016-09 simplify several aspects of accounting for employee share-based payments including income tax consequences, classification of awards as either equity or liabilities, and classification on the statement of cash flows. Some areas of the simplification apply only to nonpublic entities. The new guidance will require all income tax effects of awards to be recognized as income tax expense or benefit in the income statement when the awards vest or are settled and additional paid in capital pools will be eliminated. The guidance requires companies to present excess tax benefits as an operating activity on the statement of cash flows rather than as a financing activity. Companies will be required to account for forfeitures of share-based payments by recognizing forfeitures of awards as they occur or estimating the number of awards expected to be forfeited and adjusting the estimate when it is likely to change, as currently required, through an accounting policy election. The guidance will increase the amount an employer can withhold to cover income taxes on awards and still qualify for the exception to liability classification for shares used to satisfy the employer's income tax withholding obligation. The guidance requires an employer to classify the cash paid to a tax authority when shares are withheld to satisfy its statutory income tax withholding obligation as a financing activity on the statement of cash flows. For public business entities, the amendments in this update are effective for fiscal years beginning after December 15, 2016, including interim periods within those fiscal years. Early adoption will be permitted in any interim or annual period for which financial statements have not yet been issued or have not been made available for issuance, however all of the guidance must be adopted in the same period. If early adoption is elected in an interim period, any adjustments should be reflected as of the beginning of the annual period that includes that interim period. The adoption of this guidance is not expected to have a material effect on the Corporation’s financial position or results of operations. FASB ASU 2016-08, Revenue from Contracts with Customers (Topic 606): Principal versus Agent Considerations (Reporting Revenue Gross versus Net). The amendments in ASU 2016-08 are intended to improve the operability and understandability of the implementation guidance by clarifying the following: how an entity should identify the unit of accounting for the principal versus agent evaluation; how the control principle applies to transactions, such as service arrangements; reframes the indicators to focus on a principal rather than an agent, removes the credit risk and commission indicators and clarifies the relationship between the control principle and the indicators; and revises the existing illustrative examples and adds new illustrative examples. For public business entities, the amendments in this update are effective for annual reporting periods beginning after December 15, 2017, with early adoption permitted, but not before December 15, 2016. The amendments can be adopted using either the full retrospective approach or a modified retrospective approach. The Corporation is in process of assessing the potential impact the adoption of this guidance will have on its consolidated financial statements and related disclosures. FASB ASU 2016-07, Investments—Equity Method and Joint Ventures (Topic 323) , The amendments in this update eliminate the requirement that when an investment qualifies for use of the equity method due to an increase in level of ownership or influence, an investor must adjust the investment, results of operations, and retained earnings retroactively on a step-by step basis as if the equity method had been in effect during all previous periods that the investment had been held. For public business entities, the amendments in this update are effective for financial statements issued for fiscal years beginning after December 15, 2016, and interim periods within those fiscal years. Early adoption is permitted. The amendments should be applied prospectively upon their effective date to increases in the level of ownership interest or degree of influence that result in the adoption of the equity method. The Corporation is in process of assessing the potential impact the adoption of this guidance will have on its consolidated financial statements and related disclosures FASB ASU 2016-06, Derivatives and Hedging (Topic 815), Contingent Put and Call Options in Debt Instruments . The amendments in this update clarify the requirements for assessing whether contingent call (put) options that can accelerate the payment of principal on debt instruments are clearly and closely related to their debt hosts. An entity performing the assessment under the amendments in this update is required to assess the embedded call (put) options solely in accordance with the four-step decision sequence. For public business entities, the amendments in this update are effective for financial statements issued for fiscal years beginning after December 15, 2016, and interim periods within those fiscal years. An entity should apply the amendments in this update on a modified retrospective basis to existing debt instruments as of the beginning of the fiscal year for which the amendments are effective. Early adoption is permitted, including adoption in an interim period. If an entity early adopts the amendments in an interim period, any adjustments should be reflected as of the beginning of the fiscal year that includes that interim period. The Corporation is in process of assessing the potential impact the adoption of this guidance will have on its consolidated financial statements and related disclosures. FASB ASU 2016-05, Derivatives and Hedging (Topic 815): Effect of Derivative Contract Novations on The amendments in ASU 2016-05 clarify that a change in the counterparty to a derivative instrument that has been designated as the hedging instrument under Topic 815 does not, in and of itself, require dedesignation of that hedging relationship provided that all other hedge accounting criteria (including those in paragraphs 815-20-35-14 through 35-18) continue to be met. For public business entities, the amendments in this update are effective for financial statements issued for fiscal years beginning after December 15, 2016, and interim periods within those fiscal years. Early adoption is permitted, including adoption in an interim period. The Corporation is in process of assessing the potential impact the adoption of this guidance will have on its consolidated financial statements and related disclosures. FASB ASU 2016-02, Leases (Topic 842), The amendments in ASU 2016-02 increase transparency and comparability by requiring a lessee to recognize assets and liabilities for operating and capital leases with lease terms of more than 12 months. Additional qualitative and quantitative requirements disclosures are required to provide additional information to better understand the amount, timing, and uncertainty of cash flows arising from leases. Lessor accounting will remain largely unchanged from current GAAP. For public business entities, the amendments in this update are effective for fiscal years beginning after December 15, 2018, including interim periods within those fiscal years. The Corporation is in process of assessing the potential impact the adoption of this guidance will have on its consolidated financial statements and related disclosures. FASB ASU 2016-01, Financial Instruments-Overall (Subtopic 825-10): Recognition and Measurement of Financial Assets and Financial Liabilities. The amendments in this update supersede the guidance to classify equity securities with readily determinable fair values into different categories (that is, trading or available-for-sale) and require equity securities (including other ownership interests, such as partnerships, unincorporated joint ventures, and limited liability companies) to be measured at fair value with changes in the fair value recognized through net income. The amendments allow equity investments that do not have readily determinable fair values to be remeasured at fair value either upon the occurrence of an observable price change or upon identification of an impairment. The amendments also require enhanced disclosures about those investments. The amendments improve financial reporting by providing relevant information about an entity’s equity investments and reducing the number of items that are recognized in other comprehensive income. For public business entities, the amendments in this update are effective for fiscal years beginning after December 15, 2017, including interim periods within those fiscal years. The amendments should be applied by means of a cumulative-effect adjustment to the balance sheet as of the beginning of the fiscal year of adoption. The adoption of this guidance is not expected to have a material effect on the Corporation’s financial position or results of operations. FASB ASU 2014-09, Revenue from Contracts with Customers . In May 2014, the FASB issued new accounting guidance that revises the criteria for determining when to recognize revenue from contracts with customers and expands disclosure requirements. The amendments in this update supersede virtually all existing GAAP revenue recognition guidance, including most industry-specific revenue recognition guidance. The core principle requires an entity to recognize revenue in a manner that depicts the transfer of goods or services to customers at an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods or services. ASU 2014-09 applies to contracts with customers to provide goods and services, with certain exclusions such as lease contracts, financing arrangements, and financial instruments. On July 9, 2015, the FASB decided to delay, by one year, the effective dates, permitting public entities to apply this guidance to annual reporting periods beginning after December 15, 2017, with early adoption permitted, but not before December 15, 2016. The amendments can be adopted using either the full retrospective approach or a modified retrospective approach. There are many aspects of this new accounting guidance that are still being interpreted, and the FASB has recently issued updates to certain aspects of the guidance as noted above. The Corporation is in process of assessing the potential impact the adoption of this guidance will have on its consolidated financial statements and related disclosures.

Investment Securities

Investment Securities	6 Months Ended
	Jun. 30, 2016
Investments, Debt and Equity Securities [Abstract]
Investment Securities	Investment Securities The following tables provide the amortized cost and fair value for the major categories of held-to-maturity and available-for-sale securities. Held-to-maturity securities are carried at amortized cost, which reflects historical cost, adjusted for amortization of premiums and accretion of discounts. Available-for-sale securities are carried at fair value with net unrealized gains or losses reported on an after tax basis as a component of OCI in shareholders' equity. June 30, 2016 (In thousands) Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Fair Value Securities available-for-sale Debt securities U.S. treasury notes & bonds $ 4,996 $ 1 $ — $ 4,997 U.S. government agency debentures 2,500 28 — 2,528 U.S. states and political subdivisions 147,807 3,742 (2 ) 151,547 Residential mortgage-backed securities: U.S. government agencies 840,250 20,064 (67 ) 860,247 Commercial mortgage-backed securities: U.S. government agencies 198,069 4,095 (116 ) 202,048 Residential collateralized mortgage-backed securities: U.S. government agencies 2,325,707 30,400 (3,089 ) 2,353,018 Non-agency 3 — — 3 Commercial collateralized mortgage-backed securities: U.S. government agencies 392,205 6,528 (122 ) 398,611 Asset-backed securities: Collateralized loan obligations 297,939 354 (6,499 ) 291,794 Corporate debt securities 61,740 — (10,633 ) 51,107 Total debt securities 4,271,216 65,212 (20,528 ) 4,315,900 Equity securities Marketable equity securities 2,788 — — 2,788 Total equity securities 2,788 — — 2,788 Total securities available-for-sale $ 4,274,004 $ 65,212 $ (20,528 ) $ 4,318,688 Securities held-to-maturity Debt securities U.S. government agency debentures $ 25,000 $ 35 $ — $ 25,035 U.S. states and political subdivisions 540,425 15,713 (265 ) 555,873 Residential mortgage-backed securities: U.S. government agencies 467,462 12,367 — 479,829 Commercial mortgage-backed securities: U.S. government agencies 87,964 1,991 (42 ) 89,913 Residential collateralized mortgage-backed securities: U.S. government agencies 1,060,496 4,327 (6,670 ) 1,058,153 Commercial collateralized mortgage-backed securities: U.S. government agencies 246,509 3,559 (410 ) 249,658 Corporate debt securities 86,305 974 — 87,279 Total securities held-to-maturity $ 2,514,161 $ 38,966 $ (7,387 ) $ 2,545,740 December 31, 2015 (In thousands) Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Fair Value Securities available-for-sale Debt securities U.S. treasury notes & bonds $ 5,001 $ — $ (1 ) $ 5,000 U.S. government agency debentures 2,500 — (2 ) 2,498 U.S. states and political subdivisions 188,829 4,170 (204 ) 192,795 Residential mortgage-backed securities: U.S. government agencies 900,358 11,325 (5,454 ) 906,229 Commercial mortgage-backed securities: U.S. government agencies 173,912 220 (2,023 ) 172,109 Residential collateralized mortgage-backed securities: U.S. government agencies 2,155,808 2,659 (30,147 ) 2,128,320 Non-agency 4 — — 4 Commercial collateralized mortgage-backed securities: U.S. government agencies 217,008 580 (1,269 ) 216,319 Asset-backed securities: Collateralized loan obligations 297,831 26 (8,446 ) 289,411 Corporate debt securities 61,710 — (9,481 ) 52,229 Total debt securities 4,002,961 18,980 (57,027 ) 3,964,914 Equity securities Marketable equity securities 2,821 — — 2,821 Total equity securities 2,821 — — 2,821 Total securities available-for-sale $ 4,005,782 $ 18,980 $ (57,027 ) $ 3,967,735 Securities held-to-maturity Debt securities U.S. government agency debentures 25,000 19 — 25,019 U.S. states and political subdivisions 571,738 22,180 (262 ) 593,656 Residential mortgage-backed securities: U.S. government agencies 507,908 4,767 (2,999 ) 509,676 Commercial mortgage-backed securities: U.S. government agencies 64,951 294 (574 ) 64,671 Residential collateralized mortgage-backed securities: U.S. government agencies 1,161,340 75 (35,881 ) 1,125,534 Commercial collateralized mortgage-backed securities: U.S. government agencies 255,359 676 (3,611 ) 252,424 Corporate debt securities 87,797 364 (22 ) 88,139 Total securities held-to-maturity $ 2,674,093 $ 28,375 $ (43,349 ) $ 2,659,119 June 30, 2015 (In thousands) Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Fair Value Securities available-for-sale Debt securities U.S. treasury notes & bonds $ 5,004 $ 1 $ — $ 5,005 U.S. government agency debentures 2,500 10 — 2,510 U.S. states and political subdivisions 203,449 5,191 (1,023 ) 207,617 Residential mortgage-backed securities: U.S. government agencies 947,347 18,068 (4,563 ) 960,852 Commercial mortgage-backed securities: U.S. government agencies 171,842 643 (2,147 ) 170,338 Residential collateralized mortgage-backed securities: U.S. government agencies 1,968,918 4,779 (24,308 ) 1,949,389 Non-agency 5 — — 5 Commercial collateralized mortgage-backed securities: U.S. government agencies 227,889 1,254 (705 ) 228,438 Asset-backed securities: Collateralized loan obligations 259,743 801 (2,463 ) 258,081 Corporate debt securities 61,681 — (8,231 ) 53,450 Total debt securities 3,848,378 30,747 (43,440 ) 3,835,685 Equity Securities Marketable equity securities 2,824 — — 2,824 Non-marketable equity securities — — — — Total equity securities 2,824 — — 2,824 Total securities available-for-sale $ 3,851,202 $ 30,747 $ (43,440 ) $ 3,838,509 Securities held-to-maturity Debt securities U.S. government agency debentures 25,000 — (323 ) 24,677 U.S states and political subdivisions 529,441 8,104 (1,942 ) 535,603 Residential mortgage-backed securities: U.S. government agencies 555,273 6,919 (2,940 ) 559,252 Commercial mortgage-backed securities: U.S. government agencies 57,462 412 (219 ) 57,655 Residential collateralized mortgage-backed securities: U.S. government agencies 1,267,321 445 (35,025 ) 1,232,741 Commercial collateralized mortgage-backed securities: U.S. government agencies 263,741 1,004 (4,523 ) 260,222 Corporate debt securities 89,275 695 — 89,970 Total securities held-to-maturity $ 2,787,513 $ 17,579 $ (44,972 ) $ 2,760,120 The Corporation's U.S. states and political subdivisions portfolio is composed of general obligation bonds issued by a highly diversified number of states, cities, counties, and school districts. The amortized cost and fair value of the Corporation's portfolio of general obligation bonds are summarized by U.S. state in the tables below. As illustrated in the tables below, the aggregate fair value of the Corporation's general obligation bonds was greater than $10.0 million in 11 of the 37 U.S. states in which it holds investments. (Dollars in thousands) June 30, 2016 U.S. State # of Issuers Average Issue Size, Fair Value Amortized Cost Fair Value Michigan 116 $ 1,404 $ 157,403 $ 162,897 Ohio 108 1,095 115,545 118,300 Wisconsin 54 651 34,046 35,166 Illinois 52 1,783 90,772 92,711 Texas 51 816 40,409 41,629 Pennsylvania 41 1,037 41,674 42,529 New Jersey 31 724 21,928 22,441 Washington 27 968 25,586 26,149 Minnesota 23 699 15,667 16,076 New York 18 575 10,044 10,346 Missouri 10 1,075 10,414 10,754 Other 105 768 79,275 80,688 Total general obligation bonds 636 $ 1,037 $ 642,763 $ 659,686 (Dollars in thousands) December 31, 2015 U.S. State # of Issuers Average Issue Size, Fair Value Amortized Cost Fair Value Michigan 137 $ 1,381 $ 180,508 $ 189,259 Ohio 111 1,091 116,783 121,117 Illinois 55 1,870 99,524 102,867 Texas 58 807 45,818 46,805 Wisconsin 69 673 44,794 46,454 Pennsylvania 42 1,020 42,185 42,835 Washington 29 950 27,080 27,548 New Jersey 35 725 24,810 25,372 Minnesota 33 667 21,679 22,020 Missouri 15 1,078 15,878 16,174 New York 18 635 11,161 11,422 Other 110 759 81,815 83,477 Total general obligation bonds 712 $ 1,033 $ 712,035 $ 735,350 (Dollars in thousands) June 30, 2015 U.S. State # of Issuers Average Issue Size, Fair Value Amortized Cost Fair Value Michigan 153 $ 1,018 $ 152,499 $ 155,712 Ohio 127 964 121,716 122,474 Illinois 60 1,784 105,581 107,033 Wisconsin 70 585 39,774 40,950 Texas 67 759 50,370 50,877 Pennsylvania 46 1,014 46,547 46,666 Washington 30 939 27,783 28,169 New Jersey 34 720 23,916 24,472 Minnesota 34 692 23,267 23,540 Missouri 15 1,084 15,981 16,265 New York 18 633 11,187 11,392 Other 119 639 75,670 76,040 Total general obligation bonds 773 $ 910 $ 694,291 $ 703,590 The Corporation's investment policy states that municipal securities purchased are to be investment grade and allows for a 20% maximum portfolio concentration in municipal securities with a combined individual state to total municipal outstanding equal to or less than 25% . A municipal security is investment grade if (1) the security has a low risk of default by the obligor and (2) the full and timely payment of principal and interest is expected over the anticipated life of the instrument. The fact that a municipal security is rated by one nationally recognized credit rating agency is indicative, but not sufficient evidence, that a municipal security is investment grade. In all cases, the Corporation considers and documents within a security pre-purchase analysis factors such as capacity to pay, market and economic data, and such other factors as are available and relevant to the security or issuer. Factors to be considered in the ongoing monitoring of municipal securities and in the pre-purchase analysis include soundness of budgetary position and sources of revenue, financial strength, and stability of tax or enterprise revenues. The Corporation also considers spreads to U.S. Treasuries on comparable bonds of similar credit quality, in addition to the above analysis, to assess whether municipal securities are investment grade. The Corporation performs a risk analysis for any security that is downgraded below investment grade to determine if the security should be retained or sold. This risk analysis includes, but is not limited to, discussions with the Corporation's credit department as well as third-party municipal credit analysts and review of the nationally recognized credit rating agency's analysis describing the downgrade. The Corporation's evaluation of its municipal bond portfolio at June 30, 2016 did not uncover any facts or circumstances resulting in significantly different credit ratings than those assigned by a nationally recognized credit rating agency. FRB and FHLB stock constitutes the majority of other investments on the Consolidated Balance Sheets. (In thousands) June 30, 2016 December 31, 2015 June 30, 2015 FRB stock $ 56,303 $ 56,083 $ 55,853 FHLB stock 91,714 91,714 91,713 Other 350 375 401 Total other investments $ 148,367 $ 148,172 $ 147,967 FRB and FHLB stock is classified as a restricted investment, carried at cost and valued based on the ultimate recoverability of par value. Cash and stock dividends received on the stock are reported as interest income. There are no identified events or changes in circumstances that may have a significant adverse effect on these investments carried at cost. Securities with a carrying value of $3.2 billion , $2.9 billion , and $3.2 billion at June 30, 2016 , December 31, 2015 , and June 30, 2015 , respectively, were pledged to secure trust and public deposits and securities sold under agreements to repurchase and for other purposes required or permitted by law. Realized Gains and Losses The following table presents the gross realized gains and losses on the sales of those securities that have been included in earnings as a result of those sales. Gains or losses on the sales of available-for-sale securities are recognized upon sale and are determined using the specific identification method. Three Months Ended June 30, Six Months Ended June 30, (In thousands) 2016 2015 2016 2015 Realized gains $ 2,164 $ 672 $ 2,459 $ 1,064 Realized losses — (105 ) — (143 ) Net securities (losses)/gains $ 2,164 $ 567 $ 2,459 $ 921 Gross Unrealized Losses and Fair Value The following table presents the gross unrealized losses and fair value of securities by length of time that individual securities had been in a continuous loss position by major categories of available-for-sale and held-to-maturity securities. June 30, 2016 Less than 12 months 12 months or longer Total (Dollars in thousands) Fair Value Unrealized Losses Number Impaired Securities Fair Value Unrealized Losses Number Securities Fair Value Unrealized Losses Securities available-for-sale Debt securities U.S. states and political subdivisions $ 1,567 $ (2 ) 3 $ — $ — — $ 1,567 $ (2 ) Residential mortgage-backed securities: U.S. government agencies 14,275 (67 ) 5 — — 0 14,275 (67 ) Commercial mortgage-backed securities: U.S. government agencies 23,570 (28 ) 1 12,627 (88 ) 1 36,197 (116 ) Residential collateralized mortgage-backed securities: U.S. government agencies 13,182 (271 ) 1 332,305 (2,818 ) 29 345,487 (3,089 ) Commercial collateralized mortgage-backed securities: U.S. government agencies 24,401 (38 ) 4 19,071 (84 ) 1 43,472 (122 ) Asset-backed securities: Collateralized loan obligations 92,851 (1,795 ) 16 161,827 (4,704 ) 21 254,678 (6,499 ) Corporate debt securities 51,106 (10,633 ) 8 51,106 (10,633 ) Total securities available-for-sale $ 169,846 $ (2,201 ) 30 $ 576,936 $ (18,327 ) 60 $ 746,782 $ (20,528 ) Securities held-to-maturity Debt securities U.S. states and political subdivisions $ 3,525 $ (19 ) $ 7 $ 6,569 $ (246 ) $ 9 $ 10,094 $ (265 ) Residential mortgage-backed securities: U.S. government agencies — — 0 — — 0 — — Commercial mortgage-backed securities: U.S. government agencies 13,478 (42 ) 1 — — 0 13,478 (42 ) Residential collateralized mortgage-backed securities: U.S. government agencies — — 0 598,383 (6,670 ) 37 598,383 (6,670 ) Commercial collateralized mortgage-backed securities: U.S. government agencies — — 0 47,686 (410 ) 4 47,686 (410 ) Collateralized loan obligations: Corporate debt securities 5,002 — 1 — — 0 5,002 — Total securities held-to-maturity $ 22,005 $ (61 ) 9 $ 652,638 $ (7,326 ) 50 $ 674,643 $ (7,387 ) December 31, 2015 Less than 12 months 12 months or longer Total (Dollars in thousands) Fair Value Unrealized Losses Number Securities Fair Value Unrealized Losses Number Impaired Securities Fair Value Unrealized Losses Securities available-for-sale Debt securities U.S government agency debentures $ 2,498 $ (2 ) 1 $ — $ — 0 $ 2,498 $ (2 ) U.S. treasury notes and bonds 5,000 (1 ) 1 — — 0 5,000 (1 ) U.S. states and political subdivisions 10,178 (37 ) 20 5,899 (167 ) 9 16,077 (204 ) Residential mortgage-backed securities: U.S. government agencies 328,156 (3,026 ) 27 95,895 (2,428 ) 7 424,051 (5,454 ) Commercial mortgage-backed securities: U.S. government agencies 107,074 (1,447 ) 15 12,401 (576 ) 1 119,475 (2,023 ) Residential collateralized mortgage-backed securities: U.S. government agencies 1,130,779 (10,587 ) 78 597,403 (19,560 ) 49 1,728,182 (30,147 ) Commercial collateralized mortgage-backed securities: U.S. government agencies 113,825 (893 ) 12 23,400 (376 ) 2 137,225 (1,269 ) Asset-backed securities: Collateralized loan obligations 151,810 (3,576 ) 26 126,422 (4,870 ) 15 278,232 (8,446 ) Corporate debt securities — — 0 52,229 (9,481 ) 8 52,229 (9,481 ) Total securities available-for-sale $ 1,849,320 $ (19,569 ) 180 $ 913,649 $ (37,458 ) 91 $ 2,762,969 $ (57,027 ) Securities held-to-maturity Debt securities U.S. states and political subdivisions $ 18,465 $ (224 ) 21 $ 4,174 $ (38 ) 6 $ 22,639 $ (262 ) Residential mortgage-backed securities: U.S. government agencies 85,738 (715 ) 6 97,880 (2,284 ) 6 183,618 (2,999 ) Commercial mortgage-backed securities: U.S. government agencies 34,833 (346 ) 6 9,269 (228 ) 1 44,102 (574 ) Residential collateralized mortgage-backed securities: U.S. government agencies 140,514 (1,225 ) 12 941,982 (34,656 ) 55 1,082,496 (35,881 ) Commercial collateralized mortgage-backed securities: U.S. government agencies 71,812 (384 ) 7 117,992 (3,227 ) 11 189,804 (3,611 ) Corporate debt securities 19,243 (22 ) 6 — — 0 19,243 (22 ) Total securities held-to-maturity $ 370,605 $ (2,916 ) 58 $ 1,171,297 $ (40,433 ) 79 $ 1,541,902 $ (43,349 ) June 30, 2015 Less than 12 months 12 months or longer Total (Dollars in thousands) Fair Value Unrealized Losses Number Securities Fair Value Unrealized Losses Number Securities Fair Value Unrealized Losses Securities available-for-sale Debt securities U.S. states and political subdivisions $ 32,237 $ (587 ) 52 $ 5,642 $ (436 ) 9 $ 37,879 $ (1,023 ) Residential mortgage-backed securities: U.S. government agencies 196,219 (2,087 ) 15 103,498 (2,476 ) 8 299,717 (4,563 ) Commercial mortgage-backed securities: U.S. government agencies 96,573 (1,457 ) 14 17,335 (690 ) 2 113,908 (2,147 ) Residential collateralized mortgage-backed securities: U.S. government agencies 596,646 (4,398 ) 42 706,376 (19,910 ) 53 1,303,022 (24,308 ) Commercial collateralized mortgage-backed securities: U.S. government agencies 46,771 (71 ) 5 61,120 (634 ) 7 107,891 (705 ) Asset-backed securities: Collateralized loan obligations 84,565 (1,204 ) 10 86,082 (1,259 ) 11 170,647 (2,463 ) Corporate debt securities 4,225 (765 ) 1 49,225 (7,466 ) 7 53,450 (8,231 ) Total securities available-for-sale $ 1,057,236 $ (10,569 ) 139 $ 1,029,278 $ (32,871 ) 97 $ 2,086,514 $ (43,440 ) Securities held-to-maturity Debt securities U.S. government agency debentures — — 0 24,677 (323 ) 1 24,677 (323 ) U.S. states and political subdivisions 98,867 (1,872 ) 112 4,430 (70 ) 6 103,297 (1,942 ) Residential mortgage-backed securities: U.S. government agencies 83,112 (483 ) 5 105,289 (2,457 ) 6 188,401 (2,940 ) Commercial mortgage-backed securities: U.S. government agencies 7,263 (41 ) 1 9,430 (178 ) 1 16,693 (219 ) Residential collateralized mortgage-backed securities: U.S. government agencies 111,360 (835 ) 8 1,042,351 (34,190 ) 56 1,153,711 (35,025 ) Commercial collateralized mortgage-backed securities: U.S. government agencies 5,025 (2 ) 1 142,937 (4,521 ) 13 147,962 (4,523 ) Total securities held-to-maturity $ 305,627 $ (3,233 ) 127 $ 1,329,114 $ (41,739 ) 83 $ 1,634,741 $ (44,972 ) At least quarterly, the Corporation conducts a comprehensive security-level impairment assessment on all securities in an unrealized loss position to determine if OTTI exists. An unrealized loss exists when the current fair value of an individual security is less than its amortized cost basis. An OTTI loss must be recognized for a debt security in an unrealized loss position if the Corporation intends to sell the security or it is more likely than not that the Corporation will be required to sell the security before recovery of its amortized cost basis. In this situation, the amount of loss recognized in income is equal to the difference between the fair value and the amortized cost basis of the security. Even if the Corporation does not expect to sell the security, the Corporation must evaluate the expected cash flows to be received to determine if a credit loss has occurred. In the event of a credit loss, only the amount of impairment associated with the credit loss is recognized in income. The portion of the unrealized loss relating to other factors, such as liquidity conditions in the market or changes in market interest rates, is recorded in OCI. Equity securities are also evaluated to determine whether the unrealized loss is expected to be recoverable based on whether evidence exists to support a realizable value equal to or greater than the amortized cost basis. If it is probable that the Corporation will not recover the amortized cost basis, taking into consideration the estimated recovery period and its ability to hold the equity security until recovery, OTTI is recognized. The security-level assessment is performed on each security, regardless of the classification of the security as available-for-sale or held-to-maturity. The assessments are based on the nature of the securities, the financial condition of the issuer, the extent and duration of the securities, the extent and duration of the loss and whether Management intends to sell or it is more likely than not that it will be required to sell a security before recovery of its amortized cost basis, which may be maturity. For those securities which the assessment shows the Corporation will recover the entire cost basis, Management does not intend to sell these securities and it is not more likely than not that the Corporation will be required to sell them before the anticipated recovery of the amortized cost basis, the gross unrealized losses are recognized in OCI, net of tax. The investment securities portfolio was in a net unrealized gain position of $76.3 million at June 30, 2016 , compared to a net unrealized loss position of $53.0 million at December 31, 2015 and a net unrealized loss position of $40.1 million at June 30, 2015 . Gross unrealized losses were $27.9 million as of June 30, 2016 , compared to $100.4 million at December 31, 2015 , and $88.4 million at June 30, 2015 . As of June 30, 2016 , gross unrealized losses are concentrated within CLOs and corporate debt securities. Securities classified as corporate debt would include eight , single issuer, trust preferred securities with stated maturities. Such investments are only 1% of the fair value of the available-for-sale investment portfolio. None of the corporate issuers have deferred paying dividends on their issued trust preferred shares in which the Corporation is invested. The fair values of these investments have been impacted by the market conditions which have caused risk premiums to increase, resulting in the decline in the fair value of the trust preferred securities. Management believes the Corporation will fully recover the cost of these CLOs and corporate debt securities, and it does not intend to sell these securities and it is not more likely than not that it will be required to sell them before the anticipated recovery of the remaining amortized cost basis, which may be maturity. As a result, Management concluded that these securities were not other-than-temporarily impaired at June 30, 2016 and has recognized the total amount of the impairment in OCI, net of tax. The new Volcker Rule, as originally adopted, may affect the Corporation’s ability to hold CLOs. As of June 30, 2016 , the Corporation holds $291.8 million of CLOs with a gross unrealized loss position of $6.1 million . Management believes that its holdings of CLOs are not ownership interests in covered funds prohibited by the Volcker Rule regulations and, therefore, expects to be able to hold these investments until their stated maturities. Management seeks to maintain a CLO portfolio consistent with the requirements of the Volcker Rule, and new CLO investments are being made in accordance with the strategy. Contractual Maturity of Debt Securities The following table shows the remaining contractual maturities and contractual yields of debt securities held-to-maturity and available-for-sale as of June 30, 2016 . Estimated lives on MBSs may differ from contractual maturities as issuers may have the right to call or prepay obligations with or without call or prepayment penalties. (Dollars in thousands) U.S. Treasury notes & bonds U.S. Government agency debentures U.S. States and political subdivisions Residential mortgage-backed securities - U.S. govt. agencies Commercial mortgage-backed securities - U.S. govt. agencies Residential collateralized mortgage obligations - U.S. govt. agencies Residential collateralized mortgage obligations - non-agency Commercial collateralized mortgage obligations - U.S. govt. agencies Asset backed securities - collateralized loan obligations Corporate debt securities Total Weighted Average Yield Securities Available-for-Sale Remaining maturity: One year or less $ 4,997 $ — $ 5,895 $ 65 $ — $ — $ — $ — $ — $ — $ 10,957 2.32 % Over one year through five years — 2,528 75,103 86,480 24,498 13,936 3 22,126 — — 224,674 3.54 % Over five years through ten years — — 51,441 47,116 123,441 10,705 — 103,837 218,344 — 554,884 2.92 % Over ten years — — 19,108 726,586 54,109 2,328,377 — 272,648 73,450 51,107 3,525,385 2.23 % Fair Value $ 4,997 $ 2,528 $ 151,547 $ 860,247 $ 202,048 $ 2,353,018 $ 3 $ 398,611 $ 291,794 $ 51,107 $ 4,315,900 2.39 % Amortized Cost $ 4,996 $ 2,500 $ 147,807 $ 840,250 $ 198,069 $ 2,325,707 $ 3 $ 392,205 $ 297,939 $ 61,740 $ 4,271,216 Weighted-Average Yield 0.31 % 1.25 % 5.00 % 2.98 % 2.13 % 2.01 % 2.98 % 2.18 % 3.08 % 1.37 % 2.39 % Weighted-Average Maturity (in years) 0.23 1.92 1.86 3.28 3.60 3.11 0.59 3.90 6.51 11.31 3.55 Securities Held-to-Maturity Remaining maturity: One year or less $ — $ — $ 64,872 $ — $ — $ — $ — $ — $ — $ 22,443 $ 87,315 2.36 % Over one year through five years — 25,035 157,172 — 36,522 — — 81,237 — 64,836 364,802 2.47 % Over five years through ten years — — 193,355 21,307 53,391 — — 40,365 — — 308,418 3.83 % Over ten years — — 140,474 458,522 — 1,058,153 — 128,056 — — 1,785,205 2.02 % Fair Value $ — $ 25,035 $ 555,873 $ 479,829 $ 89,913 $ 1,058,153 $ — $ 249,658 $ — $ 87,279 $ 2,545,740 2.31 % Amortized Cost $ — $ 25,000 $ 540,425 $ 467,462 $ 87,964 $ 1,060,496 $ — $ 246,509 $ — $ 86,305 $ 2,514,161 Weighted-Average Yield — % 1.43 % 4.21 % 2.13 % 2.14 % 1.59 % — % 1.77 % — % 2.30 % 2.31 % Weighted-Average Maturity (in years) — 0.08 4.50 3.29 2.81 3.25 — 3.56 — 1.52 3.45

Loans

Loans	6 Months Ended
	Jun. 30, 2016
Loans and Leases Receivable Disclosure [Abstract]
Financing Receivables	Loans Loans outstanding as of June 30, 2016 , December 31, 2015 , and June 30, 2015 , net of unearned income, consisted of the following: (In thousands) June 30, 2016 December 31, 2015 June 30, 2015 Originated loans: Commercial $ 9,132,366 $ 9,007,830 $ 8,633,332 Residential mortgage 728,534 689,045 653,143 Installment 3,353,084 2,990,349 2,720,059 Home equity 1,276,661 1,248,438 1,180,802 Credit cards 174,986 182,843 168,576 Total originated loans 14,665,631 14,118,505 13,355,912 Allowance for originated loan losses (105,175 ) (105,135 ) (101,682 ) Net originated loans $ 14,560,456 $ 14,013,370 $ 13,254,230 Acquired loans: Commercial $ 554,414 $ 677,149 $ 877,598 Residential mortgage 292,877 324,008 358,559 Installment 494,429 573,372 659,348 Home equity 146,916 168,542 200,179 Total acquired loans 1,488,636 1,743,071 2,095,684 Allowance for acquired loan losses (4,256 ) (3,877 ) (4,950 ) Net acquired loans $ 1,484,380 $ 1,739,194 $ 2,090,734 FDIC acquired loans: Commercial $ 115,793 $ 129,109 $ 145,821 Residential mortgage 33,370 35,568 38,029 Installment 1,808 2,077 2,299 Home equity 29,813 38,668 55,545 Loss share receivable 8,555 9,947 11,820 Total FDIC acquired loans 189,339 215,369 253,514 Allowance for FDIC acquired loan losses (40,218 ) (44,679 ) (41,627 ) Net FDIC acquired loans $ 149,121 $ 170,690 $ 211,887 Total loans: Commercial $ 9,802,573 $ 9,814,088 $ 9,656,751 Residential mortgage 1,054,781 1,048,621 1,049,731 Installment 3,849,321 3,565,798 3,381,706 Home equity 1,453,390 1,455,648 1,436,526 Credit cards 174,986 182,843 168,576 Loss share receivable 8,555 9,947 11,820 Total loans 16,343,606 16,076,945 15,705,110 Total allowance for loan losses (149,649 ) (153,691 ) (148,259 ) Total Net loans $ 16,193,957 $ 15,923,254 $ 15,556,851 The following describes the distinction between originated, acquired and FDIC acquired loan portfolios and certain significant accounting policies relevant to each of these portfolios. Originated Loans Loans originated for investment are stated at their principal amount outstanding adjusted for partial charge-offs, and net deferred loan fees and costs. Interest income on loans is accrued over the term of the loans primarily using the "simple-interest" method based on the principal balance outstanding. Interest is not accrued on loans where collectability is uncertain. Accrued interest is presented separately in the consolidated balance sheet, except for accrued interest on credit card loans, which is included in the outstanding loan balance. Loan origination fees and certain direct costs incurred to extend credit are deferred and amortized over the term of the loan or loan commitment period as an adjustment to the related loan yield. Net deferred loan origination fees and costs amounted to $3.3 million , $4.1 million , and $5.4 million at June 30, 2016 , December 31, 2015 , and June 30, 2015 , respectively. Acquired Loans Acquired loans are those purchased in the Citizens acquisition. These loans were recorded at estimated fair value at the Acquisition Date with no carryover of the related ALL. The acquired loans were segregated as of the Acquisition Date between those considered to be performing (acquired nonimpaired loans) and those with evidence of credit deterioration (acquired impaired loans). Acquired loans are considered impaired if there is evidence of credit deterioration and if it is probable, at acquisition, all contractually required payments will not be collected. Revolving loans, including lines of credit, are excluded from acquired impaired loan accounting. Total outstanding acquired impaired loans as of June 30, 2016 and 2015 were $340.9 million and $504.7 million , respectively. The outstanding balance of these loans is the undiscounted sum of all amounts, including amounts deemed principal, interest, fees, penalties, and other under the loans, owed at the reporting date, whether or not currently due and whether or not any such amounts have been charged-off. Changes in the carrying amount and accretable yield for acquired impaired loans were as follows for the three and six months ended June 30, 2016 and 2015 : Three Months Ended June 30, Six Months Ended June 30, Acquired Impaired Loans 2016 2015 2016 2015 (In thousands) Accretable Yield Carrying Amount of Loans Accretable Yield Carrying Amount of Loans Accretable Yield Carrying Amount of Loans Accretable Yield Carrying Amount of Loans Balance at beginning of period $ 85,444 $ 257,152 $ 118,756 $ 388,313 $ 89,823 $ 284,709 $ 119,450 $ 423,209 Accretion (7,921 ) 7,921 (10,285 ) 10,285 (16,823 ) 16,823 (21,503 ) 21,503 Net reclassifications from nonaccretable to accretable 4,883 — 8,217 — 12,636 — 21,212 — Payments received, net — (25,878 ) — (42,434 ) — (62,337 ) — (88,548 ) Disposals (3,042 ) — (4,657 ) — (6,272 ) — (7,128 ) — Balance at end of period $ 79,364 $ 239,195 $ 112,031 $ 356,164 $ 79,364 $ 239,195 $ 112,031 $ 356,164 Cash flows expected to be collected on acquired impaired loans are estimated quarterly by incorporating several key assumptions similar to the initial estimate of fair value. These key assumptions include probability of default, and the amount of actual prepayments after the acquisition date. Prepayments affect the estimated life of the loans and could change the amount of interest income, and possibly principal expected to be collected. In reforecasting future estimated cash flows, credit loss expectations are adjusted as necessary. Improved cash flow expectations for loans or pools that were impaired in prior periods are recorded first as a reversal of previously recorded impairment and then as an increase in prospective yield when all previously recorded impairment has been recaptured. Decreases in expected cash flows are recognized as an impairment through a provision for loan loss and an increase to the allowance for acquired impaired loans. During the quarter ended June 30, 2016 , there was an overall improvement in cash flow expectations, which resulted in the net reclassification of $4.9 million from the nonaccretable difference to accretable yield. This reclassification was $8.2 million for the three months ended June 30, 2015 . The reclassification from the nonaccretable difference to the accretable yield results in prospective yield adjustments on the loan pools. FDIC Acquired Loans and Related Loss Share Receivable FDIC acquired loans include loans purchased in the 2010 FDIC-assisted acquisitions of George Washington and Midwest. George Washington and Midwest non-single family loss share agreements with the FDIC expired at March 31, 2015 and June 30, 2015 , respectively, resulting in $115.8 million of loans no longer being covered as of June 30, 2016 . As of June 30, 2016 , $65.0 million remained covered by single family loss share agreements. Changes in the loss share receivable for the three and six months ended June 30, 2016 and 2015 were as follows: Loss Share Receivable Three Months Ended June 30, Six Months Ended June 30, (In thousands) 2016 2015 2016 2015 Balance at beginning of period $ 9,436 $ 20,005 $ 9,947 $ 22,033 Amortization (358 ) (1,185 ) (706 ) (3,372 ) Increase/(decrease) due to impairment (recapture) on FDIC acquired loans (12 ) 1,819 257 6,046 FDIC reimbursement (194 ) (8,713 ) (386 ) (12,726 ) FDIC acquired loans paid in full (317 ) (106 ) (557 ) (161 ) Balance at end of the period (1) $ 8,555 $ 11,820 $ 8,555 $ 11,820 (1) As of June 30, 2016 , the loss share receivable of $8.6 million was related to single family covered loans. Total outstanding FDIC acquired impaired loans were $301.2 million and $351.1 million as of June 30, 2016 and 2015 , respectively. The outstanding balance of these loans is the undiscounted sum of all amounts, including amounts deemed principal, interest, fees, penalties, and other under the loans, owed at the reporting date, whether or not currently due and whether or not any such amounts have been charged-off. Changes in the carrying amount and accretable yield for FDIC acquired impaired loans were as follows for the three and six months ended June 30, 2016 and 2015 : Three Months Ended June 30, Six Months Ended June 30, FDIC Acquired Impaired Loans 2016 2015 2016 2015 (In thousands) Accretable Yield Carrying Loans Accretable Yield Carrying Loans Accretable Yield Carrying Loans Accretable Yield Carrying Loans Balance at beginning of period $ 22,126 $ 122,134 $ 29,867 $ 199,225 $ 22,908 $ 130,648 $ 37,511 $ 232,452 Accretion (2,231 ) 2,231 (4,100 ) 4,100 (4,528 ) 4,528 (9,667 ) 9,667 Net reclassifications between non-accretable and accretable 699 — 2,136 — 2,372 — 2,080 — Payments received, net — (5,604 ) — (45,517 ) — (16,415 ) — (84,311 ) (Disposals)/Additions (371 ) — (1,753 ) — (529 ) — (3,774 ) — Balance at end of period $ 20,223 $ 118,761 $ 26,150 $ 157,808 $ 20,223 $ 118,761 $ 26,150 $ 157,808 The cash flows expected to be collected on FDIC acquired impaired loans are estimated quarterly in a similar manner as described above for acquired impaired loans. During the quarter ended June 30, 2016 , the re-estimation process resulted in a net reclassification of $0.7 million from the nonaccretable difference to accretable yield. This reclassification was $2.1 million for the three months ended June 30, 2015 . The reclassification from the nonaccretable difference to the accretable yield results in prospective yield adjustments on the loan pools. Credit Quality Disclosures The credit quality of the Corporation's loan portfolios is assessed as a function of net credit losses, levels of nonperforming assets and delinquencies, and credit quality ratings as defined by the Corporation. These credit quality ratings are an important part of the Corporation's overall credit risk management process and evaluation of the allowance for credit losses. Generally, loans, except for certain commercial, credit card and mortgage loans, and leases on which payments are past due for 90 days are placed on nonaccrual status, unless those loans are in the process of collection and, in Management's opinion, are fully secured. Credit card loans on which payments are past due for 120 days are placed on nonaccrual status. Acquired and FDIC acquired impaired loans are considered to be accruing and performing even though collection of contractual payments may be in doubt because income continues to be accreted on the loan pool as long as expected cash flows are reasonably estimable. When a loan is placed on nonaccrual status, interest deemed uncollectible which had been accrued in prior years is charged against the ALL and interest deemed uncollectible accrued in the current year is reversed against interest income. Interest on mortgage loans is accrued until Management deems it uncollectible based upon the specific identification method. Payments subsequently received on nonaccrual loans are generally applied to principal. A loan is returned to accrual status when principal and interest are no longer past due and collectability is probable. This generally requires timely principal and interest payments for a minimum of six consecutive payment cycles. Loans are generally written off when deemed uncollectible or when they reach a predetermined number of days past due depending upon loan product, terms and other factors. The following tables provide a summary of loans by portfolio type, including the delinquency status of those loans that continue to accrue interest and those loans that are nonaccrual: As of June 30, 2016 (In thousands) ≥ 90 Days Originated Loans Days Past Due Total Total Past Due and Nonaccrual 30-59 60-89 ≥ 90 Past Due Current Loans Accruing (1) Loans Commercial C&I $ 1,677 $ 1,465 $ 10,864 $ 14,006 $ 5,868,988 $ 5,882,994 $ 1,062 $ 43,887 CRE 4,506 142 12,176 16,824 2,018,674 2,035,498 166 13,860 Construction — 709 4,760 5,469 699,871 705,340 — 9,195 Leases — — 476 476 508,058 508,534 476 — Consumer Installment 15,662 3,496 4,005 23,163 3,329,921 3,353,084 3,453 3,506 Home Equity Lines 1,245 713 2,140 4,098 1,272,563 1,276,661 623 2,390 Credit Cards 811 504 860 2,175 172,811 174,986 789 758 Residential Mortgages 9,564 2,017 4,233 15,814 712,720 728,534 1,439 10,701 Total $ 33,465 $ 9,046 $ 39,514 $ 82,025 $ 14,583,606 $ 14,665,631 $ 8,008 $ 84,297 Acquired Loans ≥ 90 Days Days Past Due Total Total Past Due and Nonaccrual 30-59 60-89 ≥ 90 Past Due Current Loans Accruing (3) Loans (3) Commercial C&I $ 340 $ 121 $ 1,168 $ 1,629 $ 179,874 $ 181,503 $ — $ 865 CRE 602 896 9,491 10,989 357,811 368,800 — 4,482 Construction — — 413 413 3,698 4,111 — — Consumer Installment 3,623 767 486 4,876 489,553 494,429 224 615 Home Equity Lines 960 503 712 2,175 144,741 146,916 587 235 Residential Mortgages 299 943 3,867 5,109 287,768 292,877 646 924 Total $ 5,824 $ 3,230 $ 16,137 $ 25,191 $ 1,463,445 $ 1,488,636 $ 1,457 $ 7,121 FDIC Acquired Loans (2) ≥ 90 Days Days Past Due Total Total Past Due and Nonaccrual 30-59 60-89 ≥ 90 Past Due Current Loans Accruing (3) Loans (3) Commercial C&I $ — $ — $ 1,326 $ 1,326 $ 29,948 $ 31,274 n/a n/a CRE — 804 24,931 25,735 54,153 79,888 n/a n/a Construction — — 3,512 3,512 1,119 4,631 n/a n/a Consumer Installment — — — — 1,808 1,808 n/a n/a Home Equity Lines 2,097 354 938 3,389 26,424 29,813 n/a n/a Residential Mortgages 4,371 204 1,800 6,375 26,995 33,370 n/a n/a Total $ 6,468 $ 1,362 $ 32,507 $ 40,337 $ 140,447 $ 180,784 n/a n/a (1) Installment loans 90 days or more past due and accruing include $2.3 million of loans guaranteed by the U.S. government as of June 30, 2016 . (2) Excludes loss share receivable of $8.6 million as of June 30, 2016 . (3) Acquired and FDIC acquired impaired loans were not classified as nonperforming assets at June 30, 2016 as the loans are considered to be performing under ASC 310-30. As a result, interest income, through the accretion of the difference between the carrying amount of the loans and the expected cash flows, is being recognized on all acquired and FDIC acquired impaired loans. These asset quality disclosures are, therefore, not applicable to acquired and FDIC acquired impaired loans. As of December 31, 2015 (In thousands) ≥ 90 Days Originated Loans Days Past Due Total Total Past Due and Nonaccrual 30-59 60-89 ≥ 90 Past Due Current Loans Accruing (1) Loans Commercial C&I $ 4,684 $ 115 $ 8,824 $ 13,623 $ 5,779,785 $ 5,793,408 $ 236 $ 23,123 CRE 12,880 — 2,260 15,140 2,062,204 2,077,344 153 4,503 Construction 1,360 — 486 1,846 643,491 645,337 — 482 Leases — — — — 491,741 491,741 — — Consumer Installment 17,934 4,828 3,920 26,682 2,963,667 2,990,349 3,519 2,178 Home Equity Lines 1,952 913 1,478 4,343 1,244,095 1,248,438 513 1,674 Credit Cards 1,449 494 632 2,575 180,268 182,843 725 545 Residential Mortgages 11,099 1,519 6,693 19,311 669,734 689,045 2,876 11,600 Total $ 51,358 $ 7,869 $ 24,293 $ 83,520 $ 14,034,985 $ 14,118,505 $ 8,022 $ 44,105 Acquired Loans ≥ 90 Days Days Past Due Total Total Past Due and Nonaccrual 30-59 60-89 ≥ 90 Past Due Current Loans Accruing (3) Loans (3) Commercial C&I $ 311 $ 31 $ 3,336 $ 3,678 $ 236,467 $ 240,145 $ 13 $ 782 CRE 3,192 1,681 9,657 14,530 416,361 430,891 522 4,948 Construction — — 733 733 5,380 6,113 — — Consumer Installment 5,059 1,329 974 7,362 566,010 573,372 236 835 Home Equity Lines 1,365 660 1,260 3,285 165,257 168,542 644 514 Residential Mortgages 8,760 567 6,792 16,119 307,889 324,008 1,681 1,166 Total $ 18,687 $ 4,268 $ 22,752 $ 45,707 $ 1,697,364 $ 1,743,071 $ 3,096 $ 8,245 FDIC Acquired Loans (2) ≥ 90 Days Days Past Due Total Total Past Due and Nonaccrual 30-59 60-89 ≥ 90 Past Due Current Loans Accruing (3) Loans (3) Commercial C&I $ — $ — $ 1,054 $ 1,054 $ 34,412 $ 35,466 n/a n/a CRE 296 354 28,501 29,151 58,623 87,774 n/a n/a Construction — — 3,761 3,761 2,108 5,869 n/a n/a Consumer Installment — — — — 2,077 2,077 n/a n/a Home Equity Lines 2,230 52 1,917 4,199 34,469 38,668 n/a n/a Residential Mortgages 4,616 172 2,655 7,443 28,125 35,568 n/a n/a Total $ 7,142 $ 578 $ 37,888 $ 45,608 $ 159,814 $ 205,422 n/a n/a (1) Installment loans 90 days or more past due and accruing include $2.3 million of loans guaranteed by the U.S. government as of December 31, 2015 . (2) Excludes loss share receivable of $9.9 million as of December 31, 2015 . (3) Acquired and FDIC acquired impaired loans were not classified as nonperforming assets at December 31, 2015 as the loans are considered to be performing under ASC 310-30. As a result, interest income, through the accretion of the difference between the carrying amount of the loans and the expected cash flows, is being recognized on all acquired and FDIC acquired impaired loans. These asset quality disclosures are, therefore, not applicable to acquired and FDIC acquired impaired loans. As of June 30, 2015 (In thousands) ≥ 90 Days Originated Loans Days Past Due Total Total Past Due and Nonaccrual 30-59 60-89 ≥ 90 Past Due Current Loans Accruing (1) Loans Commercial C&I $ 5,837 $ 1,949 $ 3,780 $ 11,566 $ 5,459,797 $ 5,471,363 $ — $ 29,241 CRE 3,758 119 2,780 6,657 2,131,715 2,138,372 418 7,486 Construction 483 — — 483 586,412 586,895 — — Leases 17,862 — — 17,862 418,840 436,702 — 1,162 Consumer Installment 11,526 3,010 4,191 18,727 2,701,332 2,720,059 3,386 2,903 Home Equity Lines 2,268 720 1,032 4,020 1,176,782 1,180,802 249 1,591 Credit Cards 679 338 558 1,575 167,001 168,576 337 459 Residential Mortgages 9,792 1,935 7,595 19,322 633,821 653,143 3,619 12,300 Total $ 52,205 $ 8,071 $ 19,936 $ 80,212 $ 13,275,700 $ 13,355,912 $ 8,009 $ 55,142 Acquired Loans ≥ 90 Days Days Past Due Total Total Past Due and Nonaccrual 30-59 60-89 ≥ 90 Past Due Current Loans Accruing (3) Loans (3) Commercial C&I $ 33 $ 99 $ 3,279 $ 3,411 $ 334,012 $ 337,423 $ — $ 661 CRE 3,353 3,115 17,473 23,941 510,004 533,945 — 5,545 Construction — — 694 694 5,536 6,230 — — Consumer Installment 3,999 1,029 1,083 6,111 653,237 659,348 475 671 Home Equity Lines 2,349 785 1,353 4,487 195,692 200,179 762 246 Residential Mortgages 186 1,173 4,902 6,261 352,298 358,559 411 929 Total $ 9,920 $ 6,201 $ 28,784 $ 44,905 $ 2,050,779 $ 2,095,684 $ 1,648 $ 8,052 FDIC Acquired Loans (2) ≥ 90 Days Days Past Due Total Total Past Due and Nonaccrual 30-59 60-89 ≥ 90 Past Due Current Loans Accruing (3) Loans (3) Commercial C&I $ — $ — $ 2,916 $ 2,916 $ 35,221 $ 38,137 n/a n/a CRE 664 1,959 32,076 34,699 67,110 101,809 n/a n/a Construction — — 3,701 3,701 2,174 5,875 n/a n/a Consumer Installment — — — — 2,299 2,299 n/a n/a Home Equity Lines 1,256 246 3,454 4,956 50,589 55,545 n/a n/a Residential Mortgages 5,391 319 2,961 8,671 29,358 38,029 n/a n/a Total $ 7,311 $ 2,524 $ 45,108 $ 54,943 $ 186,751 $ 241,694 n/a n/a (1) Installment loans 90 days or more past due and accruing include $2.7 million of loans guaranteed by the U.S. government as of June 30, 2015 . (2) Excludes loss share receivable of $11.8 million as of June 30, 2015 . (3) Acquired and FDIC acquired impaired loans were not classified as nonperforming assets at June 30, 2015 as the loans are considered to be performing under ASC 310-30. As a result interest income, through the accretion of the difference between the carrying amount of the loans and the expected cash flows, is being recognized on all acquired and FDIC acquired impaired loans. These asset quality disclosures are, therefore, not applicable to acquired and FDIC acquired impaired loans. Individual commercial loans are assigned credit risk grades based on an internal assessment of conditions that affect a borrower’s ability to meet its contractual obligation under the loan agreement. The assessment process includes reviewing a borrower’s current financial information, historical payment experience, credit documentation, public information, and other information specific to each borrower. Commercial loans are reviewed on an annual, quarterly or rotational basis or as Management becomes aware of information about a borrower’s ability to fulfill its obligation. For consumer loans, Management evaluates credit quality based on the aging status of the loan as well as by payment activity, which is presented in the above tables. The credit-risk grading process for commercial loans is summarized as follows: “Pass” Loans (Grades 1, 2, 3, 4) are not considered a greater than normal credit risk. Generally, the borrowers have the apparent ability to satisfy obligations to the bank, and the Corporation anticipates insignificant uncollectible amounts based on its individual loan review. “Special Mention” Loans (Grade 5) are commercial loans that have identified potential weaknesses that deserve Management’s close attention. If left uncorrected, these potential weaknesses may result in noticeable deterioration of the repayment prospects for the asset or in the institution’s credit position. “Substandard” Loans (Grade 6) are inadequately protected by the current financial condition and paying capacity of the obligor or by any collateral pledged. Loans so classified have a well-defined weakness or weaknesses that may jeopardize the liquidation of the debt pursuant to the contractual principal and interest terms. Such loans are characterized by the distinct possibility that the Corporation may sustain some loss if the deficiencies are not corrected. “Doubtful” Loans (Grade 7) have all the weaknesses inherent in those classified as substandard, with the added characteristic that existing facts, conditions, and values make collection or liquidation in full highly improbable. Such loans are currently managed separately to determine the highest recovery alternatives. The following tables provide a summary of commercial loans by portfolio type and the Corporation's internal credit quality rating: As of June 30, 2016 (In thousands) Originated Loans Commercial C&I CRE Construction Leases Total Grade 1 $ 75,818 $ 742 $ — $ 12,001 $ 88,561 Grade 2 416,677 806 — 49,953 467,436 Grade 3 1,267,423 294,396 46,114 87,346 1,695,279 Grade 4 3,886,039 1,697,194 609,659 325,346 6,518,238 Grade 5 73,989 13,929 31,744 22,830 142,492 Grade 6 154,707 28,431 17,823 11,058 212,019 Grade 7 8,341 — — — 8,341 Total $ 5,882,994 $ 2,035,498 $ 705,340 $ 508,534 $ 9,132,366 Acquired Loans Commercial C&I CRE Construction Leases Total Grade 1 $ — $ — $ — $ — $ — Grade 2 — — — — — Grade 3 5,994 24,244 — — 30,238 Grade 4 140,944 303,228 3,698 — 447,870 Grade 5 27,053 11,607 — — 38,660 Grade 6 7,512 29,721 413 — 37,646 Grade 7 — — — — — Total $ 181,503 $ 368,800 $ 4,111 $ — $ 554,414 FDIC Acquired Loans Commercial C&I CRE Construction Leases Total Grade 1 $ — $ — $ — $ — $ — Grade 2 — — — — — Grade 3 — 7,040 — — 7,040 Grade 4 27,834 45,520 — — 73,354 Grade 5 — — — — — Grade 6 3,440 27,328 4,631 — 35,399 Grade 7 — — — — — Total $ 31,274 $ 79,888 $ 4,631 $ — $ 115,793 As of December 31, 2015 (In thousands) Originated Loans Commercial C&I CRE Construction Leases Total Grade 1 $ 60,440 $ 773 $ — $ 12,732 $ 73,945 Grade 2 353,581 831 — 69,258 423,670 Grade 3 1,371,850 319,987 59,182 49,956 1,800,975 Grade 4 3,756,333 1,697,261 569,098 344,763 6,367,455 Grade 5 124,140 18,388 7,193 7,858 157,579 Grade 6 124,483 40,105 9,864 7,174 181,626 Grade 7 2,581 (1 ) — — 2,580 Total $ 5,793,408 $ 2,077,344 $ 645,337 $ 491,741 $ 9,007,830 Acquired Loans Commercial C&I CRE Construction Leases Total Grade 1 $ 346 $ — $ — $ — $ 346 Grade 2 — — — — — Grade 3 15,548 27,387 — — 42,935 Grade 4 200,736 361,518 5,380 — 567,634 Grade 5 11,735 12,546 — — 24,281 Grade 6 11,780 29,440 733 — 41,953 Grade 7 — — — — — Total $ 240,145 $ 430,891 $ 6,113 $ — $ 677,149 FDIC Acquired Loans Commercial C&I CRE Construction Leases Total Grade 1 $ — $ — $ — $ — $ — Grade 2 1,072 — — — 1,072 Grade 3 — 7,004 — — 7,004 Grade 4 31,637 49,917 819 — 82,373 Grade 5 295 — — — 295 Grade 6 2,462 30,853 5,050 — 38,365 Grade 7 — — — — — Total $ 35,466 $ 87,774 $ 5,869 $ — $ 129,109 As of June 30, 2015 (In thousands) Originated Loans Commercial C&I CRE Construction Leases Total Grade 1 $ 65,856 $ 807 $ — $ 14,688 $ 81,351 Grade 2 206,384 1,166 — 29,564 237,114 Grade 3 1,417,295 367,457 55,889 65,664 1,906,305 Grade 4 3,567,387 1,715,998 529,517 321,268 6,134,170 Grade 5 98,137 25,466 360 2,956 126,919 Grade 6 112,661 27,478 1,129 2,562 143,830 Grade 7 3,643 — — — 3,643 Total $ 5,471,363 $ 2,138,372 $ 586,895 $ 436,702 $ 8,633,332 Acquired Loans Commercial C&I CRE Construction Leases Total Grade 1 $ 1,061 $ — $ — $ — $ 1,061 Grade 2 — — — — — Grade 3 17,338 27,190 — — 44,528 Grade 4 289,027 453,830 5,536 — 748,393 Grade 5 13,283 16,815 — — 30,098 Grade 6 16,714 36,110 694 — 53,518 Grade 7 — — — — — Total $ 337,423 $ 533,945 $ 6,230 $ — $ 877,598 FDIC Acquired Loans Commercial C&I CRE Construction Leases Total Grade 1 $ — $ — $ — $ — $ — Grade 2 1,129 — — — 1,129 Grade 3 — — — — — Grade 4 33,992 65,906 817 — 100,715 Grade 5 — 625 — — 625 Grade 6 3,016 35,278 5,058 — 43,352 Grade 7 — — — — — Total $ 38,137 $ 101,809 $ 5,875 $ — $ 145,821

Allowance for Loan Losses

Allowance for Loan Losses	6 Months Ended
	Jun. 30, 2016
Loans and Leases Receivable Disclosure [Abstract]
Allowance for Loan Losses	Allowance for Loan Losses The Corporation's Credit Policy Division manages credit risk by establishing common credit policies for its subsidiary bank, participating in approval of its loans, conducting reviews of loan portfolios, providing centralized consumer underwriting, collections and loan operation services, and overseeing loan workouts. The Corporation's objective is to minimize losses from its commercial lending activities and to maintain consumer losses at acceptable levels that are stable and consistent with growth and profitability objectives. The ALL is Management's estimate of the amount of probable credit losses inherent in a loan portfolio at the balance sheet date. The following describes the distinctions in methodology used to estimate the ALL of originated, acquired and FDIC acquired loan portfolios as well as certain significant accounting policies relevant to each category. Allowance for Originated Loan Losses Management estimates credit losses based on originated individual loans determined to be impaired and on all other loans grouped based on similar risk characteristics. Management also considers internal and external factors such as economic conditions, loan management practices, portfolio monitoring, and other risks, collectively known as qualitative factors, or Q-factors, to estimate credit losses in the loan portfolio. Q-factors are used to reflect changes in the portfolio's collectability characteristics not captured by historical loss data. The Corporation's historical loss component is the most significant of the ALL components and is based on historical loss experience by credit-risk grade (for commercial loan pools) and payment status (for mortgage and consumer loan pools). The historical loss experience component of the ALL represents the results of migration analysis of historical net charge-offs for portfolios of loans (including groups of commercial loans within each credit-risk grade and groups of consumer loans by payment status). For measuring loss exposure in a pool of loans, the historical net charge-off or migration experience is utilized to estimate expected losses to be realized from the pool of loans. If a nonperforming, substandard loan has an outstanding balance of $0.3 million or greater or if a doubtful loan has an outstanding balance of $0.1 million or greater, as determined by the Corporation's credit-risk grading process, further analysis is performed to determine the probable loss content and assign a specific allowance to the loan, if deemed appropriate. The ALL relating to originated loans that have become impaired is based on either expected cash flows discounted using the original effective interest rate, the observable market price, or the fair value of the collateral for certain collateral dependent loans. The following tables show activity in the originated ALL, by portfolio segment for the three and six months ended June 30, 2016 and 2015 , as well as the corresponding recorded investment in originated loans at the end of the period: As of June 30, 2016 (In thousands) Originated Loans C&I CRE Construction Leases Installment Home Equity Lines Credit Cards Residential Mortgages Total Three Months Ended Allowance for originated loan losses, beginning balance $ 44,489 $ 7,244 $ 1,537 $ 1,499 $ 14,664 $ 19,528 $ 8,591 $ 5,363 $ 102,915 Charge-offs (2,593 ) (111 ) — — (5,418 ) (937 ) (1,031 ) (708 ) (10,798 ) Recoveries 1,335 207 2 29 3,573 499 421 45 6,111 Provision for loan losses 1,859 (1,468 ) 1,028 822 3,960 698 (831 ) 879 6,947 Allowance for originated loan losses, ending balance $ 45,090 $ 5,872 $ 2,567 $ 2,350 $ 16,779 $ 19,788 $ 7,150 $ 5,579 $ 105,175 Six Months Ended Allowance for originated loan losses, beginning balance $ 44,760 $ 9,631 $ 1,594 $ 1,313 $ 14,183 $ 20,094 $ 8,831 $ 4,729 $ 105,135 Charge-offs (5,803 ) (220 ) — — (12,186 ) (1,964 ) (2,484 ) (1,158 ) (23,815 ) Recoveries 1,867 232 4 49 7,379 1,123 778 65 11,497 Provision for loan losses 4,266 (3,771 ) 969 988 7,403 535 25 1,942 12,357 Allowance for originated loan losses, ending balance $ 45,090 $ 5,872 $ 2,567 $ 2,350 $ 16,779 $ 19,788 $ 7,150 $ 5,579 $ 105,175 Ending allowance for originated loan losses balance attributable to loans: Individually evaluated for impairment $ 10,447 $ 507 $ — $ — $ 1,149 $ 169 $ 201 $ 981 $ 13,454 Collectively evaluated for impairment 34,643 5,365 2,567 2,350 15,630 19,619 6,949 4,598 91,721 Total ending allowance for originated loan losses balance $ 45,090 $ 5,872 $ 2,567 $ 2,350 $ 16,779 $ 19,788 $ 7,150 $ 5,579 $ 105,175 Originated loans: Originated loans individually evaluated for impairment $ 62,707 $ 29,539 $ 512 $ — $ 42,272 $ 7,874 $ 679 $ 23,385 $ 166,968 Originated loans collectively evaluated for impairment 5,820,287 2,005,959 704,828 508,534 3,310,812 1,268,787 174,307 705,149 14,498,663 Total ending originated loan balance $ 5,882,994 $ 2,035,498 $ 705,340 $ 508,534 $ 3,353,084 $ 1,276,661 $ 174,986 $ 728,534 $ 14,665,631 As of June 30, 2015 (In thousands) Originated Loans C&I CRE Construction Leases Installment Home Equity Lines Credit Cards Residential Mortgages Total Three Months Ended Allowance for originated loan losses, beginning balance $ 39,838 $ 8,813 $ 1,752 $ 629 $ 13,358 $ 19,433 $ 7,801 $ 5,921 $ 97,545 Charge-offs (3,247 ) (408 ) — — (5,090 ) (971 ) (1,209 ) (373 ) (11,298 ) Recoveries 453 1 39 3 2,844 839 358 89 4,626 Provision for loan losses 5,832 94 (251 ) (13 ) 3,798 738 868 (257 ) 10,809 Allowance for originated loan losses, ending balance $ 42,876 $ 8,500 $ 1,540 $ 619 $ 14,910 $ 20,039 $ 7,818 $ 5,380 $ 101,682 Six Months Ended Allowance for originated loan losses, beginning balance $ 37,375 $ 10,492 $ 2,202 $ 674 $ 12,918 $ 19,324 $ 7,966 $ 4,745 $ 95,696 Charge-offs (3,757 ) (623 ) — — (10,145 ) (1,882 ) (2,661 ) (797 ) (19,865 ) Recoveries 794 1 40 7 5,864 1,452 724 124 9,006 Provision for loan losses 8,464 (1,370 ) (702 ) (62 ) 6,273 1,145 1,789 1,308 16,845 Allowance for originated loan losses, ending balance $ 42,876 $ 8,500 $ 1,540 $ 619 $ 14,910 $ 20,039 $ 7,818 $ 5,380 $ 101,682 Ending allowance for originated loan losses balance attributable to loans: Individually evaluated for impairment $ 9,117 $ 151 $ — $ — $ 1,001 $ 217 $ 250 $ 890 $ 11,626 Collectively evaluated for impairment 33,759 8,349 1,540 619 13,909 19,822 7,568 4,490 90,056 Total ending allowance for originated loan losses balance $ 42,876 $ 8,500 $ 1,540 $ 619 $ 14,910 $ 20,039 $ 7,818 $ 5,380 $ 101,682 Originated loans: Originated loans individually evaluated for impairment $ 45,969 $ 12,072 $ — $ 1,162 $ 31,927 $ 7,421 $ 787 $ 24,697 $ 124,035 Originated loans collectively evaluated for impairment 5,425,394 2,126,300 586,895 435,540 2,688,132 1,173,381 167,789 628,446 13,231,877 Total ending originated loan balance $ 5,471,363 $ 2,138,372 $ 586,895 $ 436,702 $ 2,720,059 $ 1,180,802 $ 168,576 $ 653,143 $ 13,355,912 The following table presents the originated ALL and the recorded investment as of December 31, 2015 : As of December 31, 2015 (In thousands) Originated Loans C&I CRE Construction Leases Installment Home Equity Lines Credit Cards Residential Mortgages Total Ending allowance for originated loan losses balance attributable to loans: Individually evaluated for impairment $ 11,837 $ 128 $ — $ — $ 1,009 $ 188 $ 243 $ 944 $ 14,349 Collectively evaluated for impairment 32,923 9,503 1,594 1,313 13,174 19,906 8,588 3,785 90,786 Total ending allowance for originated loan losses balance $ 44,760 $ 9,631 $ 1,594 $ 1,313 $ 14,183 $ 20,094 $ 8,831 $ 4,729 $ 105,135 Originated loans: Loans individually evaluated for impairment $ 43,818 $ 16,614 $ — $ — $ 36,904 $ 7,080 $ 717 $ 23,905 $ 129,038 Loans collectively evaluated for impairment 5,749,590 2,060,730 645,337 491,741 2,953,445 1,241,358 182,126 665,140 13,989,467 Total ending originated loan balance $ 5,793,408 $ 2,077,344 $ 645,337 $ 491,741 $ 2,990,349 $ 1,248,438 $ 182,843 $ 689,045 $ 14,118,505 Allowance for Acquired Loan Losses The Citizens' loans were recorded at their fair value as of the Acquisition Date and the prior ALL was eliminated. An ALL for acquired nonimpaired loans is estimated using a methodology similar to that used for originated loans. The allowance determined for each acquired nonimpaired loan is compared to the remaining fair value adjustment for that loan. If the computed allowance is greater, the excess is added to the allowance through a provision for loan losses. If the computed allowance is less, no additional allowance is recognized. As of June 30, 2016 , the computed ALL was less than the remaining fair value discount; therefore, no ALL for acquired nonimpaired loans was recorded. Charge-offs and actual losses on an acquired nonimpaired loan first reduce any remaining fair value discount for that loan. Once a loan's discount is depleted, charge-offs and actual losses are applied against the acquired ALL. During the three and six months ended June 30, 2016 , a net recapture to the provision for loan losses, of $0.2 million was recorded, compared to a provision of loan losses equal to net charge-offs of $1.6 million recorded for the three months ended June 30, 2015 . Charge-offs on acquired nonimpaired loans were mainly related to consumer loans that were written off in accordance with the Corporation's credit policies based on a predetermined number of days past due. The ALL for acquired impaired loans is determined by comparing the present value of the cash flows expected to be collected to the carrying amount for a given pool of loans. Management reforecasts the estimated cash flows expected to be collected on acquired impaired loans on a quarterly basis. If the present value of expected cash flows for a pool is less than its carrying value, impairment is recognized by an increase in the ALL and a charge to the provision for loan losses. If the present value of expected cash flows for a pool is greater than its carrying value, any previously established ALL is reversed and any remaining difference increases the accretable yield which will be taken into interest income over the remaining life of the loan pool. See Note 3 ( Loans ) for further information on changes in accretable yield. The following table presents activity in the allowance for acquired impaired loan losses for the three and six months ended June 30, 2016 and 2015 : Allowance for Acquired Impaired Loan Losses Three Months Ended June 30, Six Months Ended June 30, (In thousands) 2016 2015 2016 2015 Balance at beginning of the period $ 4,423 $ 7,493 $ 3,877 $ 7,457 Charge-offs (19 ) — (19 ) — Recoveries — — — Provision/(recapture) for loan losses (148 ) (2,543 ) 398 (2,507 ) Balance at end of the period $ 4,256 $ 4,950 $ 4,256 $ 4,950 Allowance for FDIC Acquired Loan Losses The ALL on FDIC acquired nonimpaired loans is estimated similar to acquired loans as described above except any increase to the ALL and provision for loan losses is partially offset by an increase in the loss share receivable for the portion of the losses recoverable under the loss share agreements with the FDIC. As of June 30, 2016 , the computed ALL was less than the remaining fair value discount; therefore, no ALL for FDIC acquired nonimpaired loans was recorded. The following table presents activity in the allowance for FDIC acquired impaired loan losses for the three and six months ended June 30, 2016 and 2015 : Allowance for FDIC acquired Impaired Loan Losses Three Months Ended June 30, Six Months Ended June 30, (In thousands) 2016 2015 2016 2015 Balance at beginning of the period $ 44,599 $ 41,514 $ 44,679 $ 40,496 Net provision/(recapture) of loan losses before benefit attributable to FDIC loss share agreements (227 ) 928 1,310 5,153 Net (benefit)/recapture attributable to FDIC loss share agreements 12 (1,819 ) (257 ) (6,046 ) Net provision/(recapture) for loan losses (215 ) (891 ) 1,053 (893 ) Increase/(decrease) in loss share receivable (12 ) 1,819 257 6,046 Loans charged-off (4,154 ) (815 ) (5,771 ) (4,022 ) Balance at end of the period $ 40,218 $ 41,627 $ 40,218 $ 41,627 An acquired or FDIC acquired loan may be resolved either through receipt of payment (in full or in part) from the borrower, the sale of the loan to a third party, or foreclosure of the collateral. In the period of resolution of a nonimpaired loan, any remaining unamortized fair value adjustment is recognized as interest income. In the period of resolution of an impaired loan accounted for on an individual basis, the difference between the carrying amount of the loan and the proceeds received is recognized as a gain or loss within noninterest income. The majority of impaired loans are accounted for within a pool of loans which results in any difference between the proceeds received and the loan carrying amount being deferred as part of the carrying amount of the pool. The accretable amount of the pool remains unaffected from the resolution until the subsequent quarterly cash flow re-estimation. Favorable results from removal of the resolved loan from the pool increase the future accretable yield of the pool, while unfavorable results are recorded as impairment in the quarter of the cash flow re-estimation. Acquired or FDIC acquired impaired loans subject to modification are not removed from a pool even if those loans would otherwise be deemed TDRs as the pool, and not the individual loan, represents the unit of account. Credit Quality A loan is considered to be impaired when, based on current events or information, it is probable the Corporation will be unable to collect all amounts due (principal and interest) per the contractual terms of the loan agreement. Interest income recognized on impaired loans was $0.4 million and $0.6 million for the three and six months ended June 30, 2016 , compared to $0.1 million and $0.2 million for the three and six months ended June 30, 2015 . Interest income which would have been earned in accordance with the original terms was $1.4 million and $2.6 million for the three and six months ended June 30, 2016 , compared to $0.9 million and $1.8 million for the three and six months ended June 30, 2015 . Loan impairment is measured based on either the present value of expected future cash flows discounted at the loan's effective interest rate, at the observable market price of the loan, or the fair value of the collateral for certain collateral dependent loans. Impaired loans include all nonaccrual commercial, agricultural, construction, and commercial real estate loans, and loans modified as a TDR, regardless of nonperforming status. Acquired and FDIC acquired impaired loans are not considered or reported as impaired loans. Nonimpaired acquired loans that are subsequently placed on nonaccrual status are reported as impaired loans and included in the Troubled Debt Restructurings section below. Acquired loans restructured after acquisition are not considered or reported as TDRs if the loans evidenced credit deterioration as of the date of acquisition and are accounted for in pools. The following tables provide further detail on impaired loans individually evaluated for impairment and the associated ALL. Certain impaired loans do not have a related ALL as the valuation of these impaired loans exceeded the recorded investment. As of June 30, 2016 Originated Loans Unpaid Average Recorded Principal Related Recorded (In thousands) Investment Balance Allowance Investment Impaired loans with no related allowance Commercial C&I $ 19,489 $ 22,663 $ — $ 29,022 CRE 26,058 24,696 — 17,119 Construction 512 512 — 102 Leases — — — — Consumer Installment 2,366 2,697 — 1,636 Home equity line 695 948 — 694 Credit card 15 15 — 19 Residential mortgages 11,950 14,350 — 11,680 Subtotal 61,085 65,881 — 60,272 Impaired loans with a related allowance Commercial C&I 43,218 51,933 10,447 21,305 CRE 3,481 3,563 507 1,999 Construction — — — — Leases — — — — Consumer Installment 39,906 40,033 1,149 35,473 Home equity line 7,179 7,180 169 6,803 Credit card 664 664 201 699 Residential mortgages 11,435 11,549 981 12,201 Subtotal 105,883 114,922 13,454 78,480 Total impaired loans $ 166,968 $ 180,803 $ 13,454 $ 138,752 Note 1: These tables exclude loans fully charged-off. Note 2: The differences between the recorded investment and unpaid principal balance amounts represent partial charge-offs. As of December 31, 2015 Originated Loans Unpaid Average Recorded Principal Related Recorded (In thousands) Investment Balance Allowance Investment Impaired loans with no related allowance Commercial C&I $ 21,066 $ 23,854 $ — $ 27,215 CRE 15,465 17,456 — 13,031 Construction — — — — Consumer Installment 1,369 1,658 — 1,807 Home equity line 670 919 — 999 Credit card 21 21 — 20 Residential mortgages 11,550 13,901 — 11,979 Subtotal 50,141 57,809 — 55,051 Impaired loans with a related allowance Commercial C&I 22,752 28,881 11,837 11,284 CRE 1,149 1,173 128 3,037 Construction — — — — Consumer Installment 35,535 35,592 1,009 28,808 Home equity line 6,410 6,411 188 6,382 Credit card 696 696 243 757 Residential mortgages 12,355 12,458 944 12,619 Subtotal 78,897 85,211 14,349 62,887 Total impaired loans $ 129,038 $ 143,020 $ 14,349 $ 117,938 Note 1: These tables exclude loans fully charged-off. Note 2: The differences between the recorded investment and unpaid principal balance amounts represent partial charge-offs. As of June 30, 2015 Originated Loans Unpaid Average Recorded Principal Related Recorded (In thousands) Investment Balance Allowance Investment Impaired loans with no related allowance Commercial C&I $ 28,076 $ 37,358 $ — $ 27,238 CRE 11,482 17,585 — 12,983 Construction — — — — Leases 1,162 1,162 — 598 Consumer Installment 1,678 2,183 — 1,753 Home equity line 884 1,132 — 906 Credit card 19 19 — 26 Residential mortgages 12,047 14,700 — 12,146 Subtotal 55,348 74,139 — 55,650 Impaired loans with a related allowance Commercial C&I 17,893 18,062 9,117 7,199 CRE 590 593 151 600 Construction — — — — Consumer Installment 30,249 30,302 1,001 25,722 Home equity line 6,537 6,537 217 6,684 Credit card 768 768 250 823 Residential mortgages 12,650 12,739 890 12,675 Subtotal 68,687 69,001 11,626 53,703 Total impaired loans $ 124,035 $ 143,140 $ 11,626 $ 109,353 Note 1: These tables exclude loans fully charged-off. Note 2: The differences between the recorded investment and unpaid principal balance amounts represent partial charge-offs. Troubled Debt Restructurings In certain circumstances, the Corporation may modify the terms of a loan to maximize the collection of amounts due when a borrower is experiencing financial difficulties or is expected to experience difficulties in the near term. In most cases, the modification is either a concessionary reduction in interest rate, extension of the maturity date or modification of the adjustable rate provisions of the loan that would otherwise not be considered; however, forgiveness of principal is rarely granted. Concessionary modifications are classified as TDRs unless the modification is short-term, typically less than 90 days. TDRs accrue interest if the borrower complies with the revised terms and conditions and has demonstrated repayment performance at a level commensurate with the modified terms for a minimum of six consecutive payment cycles after the restructuring date. Acquired loans restructured after acquisition are not considered TDRs if the loans evidenced credit deterioration as of the Acquisition Date and are accounted for in pools. The substantial majority of the Corporation's residential mortgage TDRs involve reducing the client's loan payment through an interest rate reduction for a set period of time based on the borrower's ability to service the modified loan payment. Modifications of mortgages retained in portfolio are handled using proprietary modification guidelines, or the FDIC's Modification Program for residential first mortgages covered by loss share agreements (agreements between the Bank and the FDIC that afford the Bank significant protection against future losses). The Corporation participates in the U.S. Treasury's Home Affordable Modification Program for originated mortgages sold to and serviced for FNMA and FHLMC. Commercial and industrial loans modified in a TDR often involve temporary interest-only payments, term extensions and converting revolving credit lines to term loans. Additional collateral, a co-borrower, or a guarantor is often requested. Commercial real estate and construction loans modified in a TDR often involve reducing the interest rate for the remaining term of the loan, extending the maturity date at an interest rate lower than the current market rate for new debt with similar risk, or substituting or adding a new borrower or guarantor. Construction loans modified in a TDR may also involve extending the interest-only payment period. The Corporation has modified certain loans according to provisions in loss share agreements. Losses associated with modifications on these loans, including the economic impact of interest rate reductions, are generally eligible for reimbursement under the loss share agreements. The following tables provide the number of loans modified in a TDR and the recorded investment and unpaid principal balance by loan portfolio as of June 30, 2016 , December 31, 2015 , and June 30, 2015 . As of June 30, 2016 (Dollars in thousands) Number of Loans Recorded Investment Unpaid Principal Balance Originated loans Commercial C&I 27 $ 36,650 $ 39,985 CRE 26 20,005 22,025 Construction 0 — — Total originated commercial 53 56,655 62,010 Consumer Installment 1,310 42,272 42,730 Home equity lines 260 7,874 8,128 Credit card 197 679 679 Residential mortgages 303 23,385 25,899 Total originated consumer 2,070 74,210 77,436 Total originated loans 2,123 $ 130,865 $ 139,446 Acquired loans Commercial C&I 0 $ — $ — CRE 6 4,998 5,453 Construction 0 — — Total acquired commercial 6 4,998 5,453 Consumer Installment 67 1,585 1,661 Home equity lines 173 7,520 7,583 Residential mortgages 32 2,899 3,216 Total acquired consumer 272 12,004 12,460 Total acquired loans 278 $ 17,002 $ 17,913 FDIC acquired loans Commercial C&I 0 $ — $ — CRE 3 13,124 11,417 Construction 1 566 672 Total FDIC acquired commercial 4 13,690 12,089 Consumer Home equity lines 71 8,529 8,544 Residential mortgages 0 — — Total FDIC acquired consumer 71 8,529 8,544 Total FDIC acquired loans 75 $ 22,219 $ 20,633 Total loans Commercial C&I 27 $ 36,650 $ 39,985 CRE 35 38,127 38,895 Construction 1 566 672 Total commercial 63 75,343 79,552 Consumer Installment 1,377 43,857 44,391 Home equity lines 504 23,923 24,255 Credit card 197 679 679 Residential mortgages 335 26,284 29,115 Total consumer 2,413 94,743 98,440 Total loans 2,476 $ 170,086 $ 177,992 Note 1: For originated loans, the differences between the recorded investment and unpaid principal balance amounts represent partial charge-offs. Note 2: For acquired and FDIC acquired loans, the differences between the recorded investment and unpaid principal balance amounts represent partial charge-offs and remaining purchase discount. As of December 31, 2015 (Dollars in thousands) Number of Loans Recorded Investment Unpaid Principal Balance Originated loans Commercial C&I 26 $ 33,087 $ 33,740 CRE 24 14,671 16,648 Construction 0 — — Total originated commercial 50 47,758 50,388 Consumer Installment 1,223 36,904 37,250 Home equity lines 257 7,080 7,330 Credit card 212 717 717 Residential mortgages 312 23,905 26,359 Total originated consumer 2,004 68,606 71,656 Total originated loans 2,054 $ 116,364 $ 122,044 Acquired loans Commercial C&I 1 7,611 7,611 CRE 3 918 1,044 Total acquired commercial 4 8,529 8,655 Consumer Installment 51 1,117 1,211 Home equity lines 176 7,718 7,778 Residential mortgages 31 2,154 2,382 Total acquired consumer 258 10,989 11,371 Total acquired loans 262 $ 19,518 $ 20,026 FDIC acquired loans Commercial C&I 0 $ — $ — CRE 3 14,056 12,479 Construction 1 593 682 Total FDIC acquired commercial 4 14,649 13,161 Consumer Home equity lines 81 10,215 10,281 Residential Mortgages 1 182 182 Total FDIC acquired consumer 82 10,397 10,463 Total FDIC acquired loans 86 $ 25,046 $ 23,624 Total loans Commercial C&I 27 $ 40,698 $ 41,351 CRE 30 29,645 30,171 Construction 1 593 682 Total commercial 58 70,936 72,204 Consumer Installment 1,274 38,021 38,461 Home equity lines 514 25,013 25,389 Credit card 212 717 717 Residential mortgages 344 26,241 28,923 Total consumer 2,344 89,992 93,490 Total loans 2,402 $ 160,928 $ 165,694 Note 1: For originated loans, the differences between the recorded investment and unpaid principal balance amounts represent partial charge-offs. Note 2: For acquired and FDIC acquired loans, the differences between the recorded investment and unpaid principal balance amounts represent partial charge-offs and remaining purchase discount. As of June 30, 2015 (Dollars in thousands) Number of Loans Recorded Investment Unpaid Principal Balance Originated loans Commercial C&I 56 $ 29,454 $ 36,538 CRE 69 10,362 15,681 Construction 31 — — Total originated commercial 156 39,816 52,219 Consumer Installment 1,215 31,927 32,485 Home equity lines 271 7,421 7,669 Credit card 231 787 787 Residential mortgages 316 24,697 27,439 Total originated consumer 2,033 64,832 68,380 Total originated loans 2,189 $ 104,648 $ 120,599 Acquired loans Commercial C&I 2 — 55 CRE 3 930 1,018 Total acquired commercial 5 930 1,073 Consumer Installment 50 1,144 1,227 Home equity lines 174 7,138 7,205 Residential mortgages 31 2,150 2,386 Total acquired consumer 255 10,432 10,818 Total acquired loans 260 $ 11,362 $ 11,891 FDIC acquired loans Commercial C&I 8 $ — $ 1,299 CRE 24 11,704 27,933 Construction 9 525 9,542 Total FDIC acquired commercial 41 12,229 38,774 Consumer Home equity lines 77 10,563 10,739 Residential mortgages 1 184 184 Total FDIC acquired consumer 78 10,747 10,923 Total FDIC acquired loans 119 $ 22,976 $ 49,697 Total loans Commercial C&I 66 $ 29,454 $ 37,892 CRE 96 22,996 44,632 Construction 40 525 9,542 Total commercial 202 52,975 92,066 Consumer Installment 1,265 33,071 33,712 Home equity lines 522 25,122 25,613 Credit card 231 787 787 Residential mortgages 348 27,031 30,009 Total consumer 2,366 86,011 90,121 Total loans 2,568 $ 138,986 $ 182,187 Note 1: For originated loans, the differences between the recorded investment and unpaid principal balance amounts represent partial charge-offs. Note 2: For acquired and FDIC acquired loans, the differences between the recorded investment and unpaid principal balance amounts represent partial charge-offs and remaining purchase discount. The pre-modification and post-modification outstanding recorded investments of loans modified as TDRs during the three and six months ended June 30, 2016 and 2015 were not materially different. Post-modification balances may include capitalization of unpaid accrued interest and fees associated with the modification as well as forgiveness of principal. Loans modified as TDRs during the three and six months ended June 30, 2016 and 2015 did not involve the forgiveness of principal; accordingly, the Corporation did not record a charge-off at the modification date. Additionally, capitalization of any unpaid accrued interest and fees assessed to loans modified in the three and six months ended June 30, 2016 and 2015 were not material to the accompanying consolidated financial statements. Specific allowances for loan losses are established for loans whose terms have been modified in a TDR. Specific reserve allocations are generally assessed prior to loans being modified in a TDR, as most of these loans migrate from the Corporation's internal watch list and have been specifically allocated for as part of the Corporation's normal loan loss provisioning methodology. At June 30, 2016 , December 31, 2015 , and June 30, 2015 , the Corporation had $0.2 million , $7.0 million , and $3.7 million , respectively, in commitments to lend additional funds to debtors owing receivables whose terms have been modified in a TDR. The following tables provide a summary of the delinquency status of TDRs along with the specific allowance for loan loss, by loan type, as of June 30, 2016 , December 31, 2015 , and June 30, 2015 , including TDRs that continue to accrue interest and TDRs included in nonperforming assets. As of June 30, 2016 Accruing TDRs Nonaccruing TDRs Total Total (In thousands) Current Delinquent Total Current Delinquent Total TDRs Allowance Originated loans Commercial C&I $ 16,082 $ 969 $ 17,051 $ 13,068 $ 6,531 $ 19,599 $ 36,650 $ 4,917 CRE 8,851 93 8,944 111 10,950 11,061 20,005 5 Construction — — — — — — — — Total originated commercial 24,933 1,062 25,995 13,179 17,481 30,660 56,655 4,922 Consumer Installment 39,255 1,064 40,319 1,718 235 1,953 42,272 1,149 Home equity lines 7,017 79 7,096 778 — 778 7,874 169 Credit card 519 117 636 — 43 43 679 201 Residential mortgages 14,324 524 14,848 5,717 2,820 8,537 23,385 981 Total originated consumer 61,115 1,784 62,899 8,213 3,098 11,311 74,210 2,500 Total originated TDRs $ 86,048 $ 2,846 $ 88,894 $ 21,392 $ 20,579 $ 41,971 $ 130,865 $ 7,422 Acquired loans Commercial C&I $ — $ — $ — $ — $ — $ — $ — $ — CRE 2,720 — 2,720 2,151 127 2,278 4,998 156 Construction — — — — — — — — Total acquired commercial 2,720 — 2,720 2,151 127 2,278 4,998 156 Consumer Installment 1,142 223 1,365 220 — 220 1,585 86 Home equity lines 6,820 583 7,403 117 — 117 7,520 115 Residential mortgages 2,259 — 2,259 640 — 640 2,899 176 Total acquired consumer 10,221 806 11,027 977 — 977 12,004 377 Total acquired TDRs $ 12,941 $ 806 $ 13,747 $ 3,128 $ 127 $ 3,255 $ 17,002 $ 533 FDIC acquired loans Commercial C&I $ — $ — $ — $ — $ — $ — $ — $ — CRE — — — — 13,124 13,124 13,124 2,236 Construction — — — 566 — 566 566 25 Total FDIC acquired commercial — — — 566 13,124 13,690 13,690 2,261 Consumer Home equity lines 8,392 87 8,479 50 — 50 8,529 21 Residential mortgages — — — — — — — — Total FDIC acquired consumer 8,392 87 8,479 50 — 50 8,529 21 Total FDIC acquired TDRs $ 8,392 $ 87 $ 8,479 $ 616 $ 13,124 $ 13,740 $ 22,219 $ 2,282 Total loans Commercial C&I $ 16,082 $ 969 $ 17,051 $ 13,068 $ 6,531 $ 19,599 $ 36,650 $ 4,917 CRE 11,571 93 11,664 2,262 24,201 26,463 38,127 2,397 Construction — — — 566 — 566 566 25 Total commercial 27,653 1,062 28,715 15,896 30,732 46,628 75,343 7,339 Consumer Installment 40,397 1,287 41,684 1,938 235 2,173 43,857 1,235 Home equity lines 22,229 749 22,978 945 — 945 23,923 305 Credit card 519 117 636 — 43 43 679 201 Residential mortgages 16,583 524 17,107 6,357 2,820 9,177 26,284 1,157 Total consumer 79,728 2,677 82,405 9,240 3,098 12,338 94,743 2,898 Total TDRs $ 107,381 $ 3,739 $ 111,120 $ 25,136 $ 33,830 $ 58,966 $ 170,086 $ 10,237 As of December 31, 2015 Accruing TDRs Nonaccruing TDRs Total Total (In thousands) Current Delinquent Total Current Delinquent Total TDRs Allowance Originated loans Commercial C&I $ 22,566 $ 107 $ 22,673 $ 4,229 $ 6,185 $ 10,414 $ 33,087 $ 6,052 CRE 10,271 2,247 12,518 746 1,407 2,153 14,671 20 Construction — — — — — — — — Total originated commercial 32,837 2,354 35,191 4,975 7,592 12,567 47,758 6,072 Consumer Installment 34,902 794 35,696 1,125 83 1,208 36,904 1,009 Home equity lines 6,511 114 6,625 399 56 455 7,080 188 Credit card 575 140 715 — 2 2 717 243 Residential mortgages 12,869 2,896 15,765 4,611 3,529 8,140 23,905 944 Total originated consumer 54,857 3,944 58,801 6,135 3,670 9,805 68,606 2,384 Total originated TDRs $ 87,694 $ 6,298 $ 93,992 $ 11,110 $ 11,262 $ 22,372 $ 116,364 $ 8,456 Acquired loans Commercial C&I $ 7,611 $ — $ 7,611 $ — $ — $ — $ 7,611 $ — CRE — — — 659 259 918 918 201 Total acquired commercial 7,611 — 7,611 659 259 918 8,529 201 Consumer Installment 967 126 1,093 14 10 24 1,117 45 Home equity lines 6,941 655 7,596 122 — 122 7,718 70 Residential mortgages 1,096 256 1,352 802 — 802 2,154 — Total acquired consumer 9,004 1,037 10,041 938 10 948 10,989 115 Total acquired TDRs $ 16,615 $ 1,037 $ 17,652 $ 1,597 $ 269 $ 1,866 $ 19,518 $ 316 FDIC acquired loans Commercial C&I $ — $ — $ — $ — $ — $ — $ — $ — CRE — 14,056 14,056 — — — 14,056 2,333 Construction 593 — 593 — — — 593 — Total FDIC acquired commercial 593 14,056 14,649 — — — 14,649 2,333 Consumer Home equity lines 10,065 70 10,135 6 74 80 10,215 23 Residential mortgages 182 — 182 — — — 182 — Total FDIC acquired consumer 10,247 70 10,317 6 74 80 10,397 23 Total FDIC acquired TDRs $ 10,840 $ 14,126 $ 24,966 $ 6 $ 74 $ 80 $ 25,046 $ 2,356 Total Loans Commercial C&I $ 30,177 $ 107 $ 30,284 $ 4,229 $ 6,185 $ 10,414 $ 40,698 $ 6,052 CRE 10,271 16,303 26,574 1,405 1,666 3,071 29,645 2,554 Construction 593 — 593 — — — 593 — Total commercial 41,041 16,410 57,451 5,634 7,851 13,485 70,936 8,606 Consumer Installment

Goodwill and Other Intangible A

Goodwill and Other Intangible Assets	6 Months Ended
	Jun. 30, 2016
Goodwill and Intangible Assets Disclosure [Abstract]
Goodwill and Other Intangible Assets	Goodwill and Other Intangible Assets Goodwill Goodwill totaled $741.7 million as of June 30, 2016 , December 31, 2015 , and June 30, 2015 . Goodwill is not amortized but is evaluated for impairment on an annual basis at November 30 of each year or whenever events or changes in circumstances indicate the carrying value may not be recoverable. No events or circumstances since the November 30, 2015 annual impairment test were noted that would indicate it was more likely than not a goodwill impairment exists. Other Intangible Assets The Corporation has other intangible assets that are amortized, consisting of core deposit intangibles, lease intangibles and trust relationship intangibles. The following tables show the gross carrying amount, accumulated amortization, and net carrying amount of these intangible assets. June 30, 2016 Gross Carrying Accumulated Net Carrying (In thousands) Amount Amortization Amount Core deposit intangibles (1) $ 82,323 $ (32,083 ) $ 50,240 Lease intangible 238 (229 ) 9 Trust Relationships (2) 14,000 (8,229 ) 5,771 $ 96,561 $ (40,541 ) $ 56,020 December 31, 2015 Gross Carrying Accumulated Net Carrying (In thousands) Amount Amortization Amount Core deposit intangibles (1) $ 82,323 $ (28,304 ) $ 54,019 Lease intangible 238 (212 ) 26 Trust Relationships (2) 14,000 (7,417 ) 6,583 $ 96,561 $ (35,933 ) $ 60,628 June 30, 2015 Gross Carrying Accumulated Net Carrying (In thousands) Amount Amortization Amount Core deposit intangibles (1) $ 82,323 $ (24,150 ) $ 58,173 Lease intangible 238 (194 ) 44 Trust relationships (2) 14,000 (6,393 ) 7,607 $ 96,561 $ (30,737 ) $ 65,824 (1) Core deposit intangibles are amortized on an accelerated basis over their estimated useful lives, which range from 10 - 15 years. (2) Trust relationship intangibles are amortized on an accelerated basis on their estimated useful lives of 12 years . Amortization expense for intangible assets was $4.6 million in the six months ended June 30, 2016 , compared to $5.2 million in the six months ended June 30, 2015 . Estimated amortization expense for each of the next five years is as follows: remainder of 2016 - $4.6 million ; 2017 - $8.2 million ; 2018 - $7.3 million ; and 2019 - $6.5 million ; 2020 - $5.2 million .

Shareholders' Equity

Shareholders' Equity	6 Months Ended
	Jun. 30, 2016
Earnings Per Share [Abstract]
Stockholders' Equity	Shareholders' Equity Common Stock Warrant On May 13, 2015, the Corporation repurchased a warrant previously issued by Citizens to the U.S. Treasury. The warrant, which entitled the U.S. Treasury to purchase 2,571,998 shares of FirstMerit Common Stock at an adjusted strike price of $17.50 , was purchased for $12.2 million . In accordance with GAAP, the Corporation recorded a reduction to capital surplus in the amount of $9.2 million in conjunction with this warrant repurchase that reflected the excess amount paid over the previously stated amount. Preferred Stock The Corporation has 7,000,000 shares of authorized Preferred Stock and has designated 115,000 shares of its Preferred Stock as 5.875% Non-Cumulative Perpetual Preferred Stock, Series A. On February 4, 2013, the Corporation issued 100,000 shares of its Non-Cumulative Perpetual Preferred Stock, Series A, which began paying cash dividends on May 4, 2013, quarterly in arrears on the 4 th day of February, May, August, and November. Earnings Per Share Basic net income per common share is calculated using the two-class method to determine income attributable to common shareholders. Net income attributable to Common Stock is then divided by the weighted-average number of Common Stock outstanding during the period. Diluted net income per common share is calculated under the more dilutive of either the treasury method or two-class method. Adjustments to the weighted-average number of shares of Common Stock outstanding are made only when such adjustments will dilute earnings per common share. Net income attributable to Common Stock is then divided by the weighted-average number of Common Stock and Common Stock equivalents outstanding during the period. The reconciliation between basic and diluted EPS using the two-class method and treasury stock method is presented as follows: Three Months Ended June 30, Six Months Ended June 30, (Dollars in thousands, except per share amounts) 2016 2015 2016 2015 Basic EPS: Net income $ 58,309 $ 56,584 $ 112,445 $ 113,723 Less: Cash dividends on 5.875% non-cumulative perpetual series A, Preferred Stock 1,469 1,469 2,938 2,938 Income allocated to participating securities 496 467 955 937 Net income attributable to common shareholders $ 56,344 $ 54,648 $ 108,552 $ 109,848 Weighted average Common Stock outstanding used in basic EPS 166,188 165,736 165,966 165,574 Basic net income per common share $ 0.34 $ 0.33 $ 0.65 $ 0.66 Diluted EPS: Income used in diluted earnings per common share calculation $ 56,344 $ 54,648 $ 108,552 $ 109,848 Weighted average Common Stock outstanding used in basic EPS 166,188 165,736 165,966 165,574 Add: Common Stock equivalents Employee stock award plans 619 541 597 515 Weighted average Common and Common Stock equivalent shares outstanding 166,807 166,277 166,563 166,089 Diluted net income per common share $ 0.34 $ 0.33 $ 0.65 $ 0.66 Common Stock equivalents consist of employee stock award plans. These Common Stock equivalents do not enter into the calculation of diluted EPS if the impact would be anti-dilutive, that is, increase EPS or reduce a loss per share. Anti-dilutive potential Common Stock for the six months ended June 30, 2016 and 2015 totaled 0.2 million and 0.8 million , respectively.

Segment Information

Segment Information	6 Months Ended
	Jun. 30, 2016
Segment Reporting [Abstract]
Segment Information	Segment Information Management monitors the Corporation’s results by an internal performance measurement system, which provides lines of business results and key performance measures. The profitability measurement system is based on internal financial management practices designed to produce consistent results and reflect the underlying economics of the businesses. The development and application of these methodologies is a dynamic process. Accordingly, these measurement tools and assumptions may be revised periodically to reflect methodological, product, and/or management organizational changes. Further, these tools measure financial results that support the strategic objectives and internal organizational structure of the Corporation. Consequently, the information presented is not necessarily comparable with similar information for other financial institutions. A description of each business, selected financial performance, and the methodologies used to measure financial performance are presented below. • Commercial – The commercial line of business provides a full range of lending, depository, and related financial services to middle-market corporate, industrial, financial, core business banking, public entities, and leasing clients. Commercial also includes personal business from commercial loan clients in coordination with the Wealth Management segment. Products and services offered include commercial term loans, revolving credit arrangements, asset-based lending, leasing, commercial mortgages, real estate construction lending, letters of credit, treasury management, government banking, international banking, merchant card and other depository products and services. • Retail – The retail line of business includes consumer lending and deposit gathering, residential mortgage loan origination and servicing, and branch-based small business banking. Retail offers a variety of retail financial products and services including consumer direct and indirect installment loans, debit and credit cards, residential mortgage loans, home equity loans and lines of credit, deposit products, fixed and variable annuities and ATM network services. Deposit products include checking, savings, money market accounts and certificates of deposit. • Wealth – The wealth line of business offers a broad array of asset management, private banking, financial planning, estate settlement and administration, credit and deposit products and services. Trust and investment services include personal trust and planning, investment management, estate settlement and administration services. Retirement plan services focus on investment management and fiduciary activities. Brokerage and insurance delivers retail mutual funds, other securities, variable and fixed annuities, personal disability and life insurance products and brokerage services. Private banking provides credit, deposit and asset management solutions for affluent clients. • Other – The other line of business includes activities that are not directly attributable to one of the three principal lines of business. Included in the Other category are the Parent Company, eliminating companies, community development operations, the treasury group, which includes the securities portfolio, wholesale funding and asset liability management activities, and the economic impact of certain assets, capital and support functions not specifically identifiable with the three primary lines of business. The accounting policies of the lines of businesses are the same as those of the Corporation described in Note 1 ( Summary of Significant Accounting Policies ) to the 2015 Form 10-K. Funds transfer pricing is used in the determination of net interest income by assigning a cost for funds used or credit for funds provided to assets and liabilities within each business unit. Assets and liabilities are match-funded based on their maturity, prepayment and/or repricing characteristics. As a result, the three primary lines of business are generally insulated from changes in interest rates. Changes in net interest income due to changes in rates are reported in Other by the treasury group. Capital has been allocated on an economic risk basis. Loans and lines of credit have been allocated capital based upon their respective credit risk. Asset management holdings in the Wealth segment have been allocated capital based upon their respective market risk related to assets under management. Normal business operating risk has been allocated to each line of business by the level of noninterest expense. Mismatches between asset and liability cash flows as well as interest rate risk for mortgage servicing rights and mortgage origination business have been allocated capital based upon their respective asset/liability management risk. The provision for loan loss is allocated based upon the actual net charge-offs of each respective line of business, adjusted for loan growth and changes in risk profile. Noninterest income and expenses directly attributable to a line of business are assigned to that line of business. Expenses for centrally provided services are allocated to the business line by various activity based cost formulas. Substantially all of the Corporation’s business is conducted in the United States of America. The following tables present a summary of financial results as of and for the three and six months ended June 30, 2016 and June 30, 2015 : FirstMerit (In thousands) Commercial Retail Wealth Other Consolidated June 30, 2016 QTD YTD QTD YTD QTD YTD QTD YTD QTD YTD OPERATIONS: Net interest income/(loss) $ 101,313 $ 203,932 $ 94,369 $ 189,096 $ 6,314 $ 12,867 $ (15,918 ) $ (34,661 ) $ 186,078 $ 371,234 Provision/ (recapture) for loan losses 1,070 6,842 5,123 9,169 (20 ) (175 ) 218 (1,636 ) 6,391 14,200 Noninterest income 20,782 41,961 22,079 45,673 15,129 29,437 7,125 15,438 65,115 132,509 Noninterest expense 57,201 118,221 84,880 173,575 13,883 27,236 4,356 8,251 160,320 327,283 Net income/(loss) 41,486 78,539 17,189 33,816 4,927 9,908 (5,293 ) (9,818 ) 58,309 112,445 AVERAGES: Assets $ 9,600,103 $ 9,596,152 $ 6,370,350 $ 6,301,303 $ 314,752 $ 310,159 $ 9,638,361 $ 9,639,033 $ 25,923,566 $ 25,846,647 Loans 9,721,866 9,715,827 6,173,352 6,097,054 306,028 301,586 41,656 46,706 16,242,902 16,161,173 Earning assets 10,081,198 10,077,716 6,178,619 6,103,154 306,028 301,586 6,555,458 6,523,236 23,121,303 23,005,692 Deposits 7,269,121 7,373,805 11,003,769 11,014,512 1,284,516 1,302,113 1,410,044 1,111,129 20,967,450 20,801,559 Economic capital 1,251,845 1,252,069 867,958 870,360 121,824 126,706 770,591 742,055 3,012,218 2,991,190 FirstMerit (In thousands) Commercial Retail Wealth Other Consolidated June 30, 2015 QTD YTD QTD YTD QTD YTD QTD YTD QTD YTD OPERATIONS: Net interest income/(loss) $ 101,342 $ 202,830 $ 92,501 $ 184,527 $ 5,452 $ 10,932 $ (14,177 ) $ (27,548 ) $ 185,118 $ 370,741 Provision/ (recapture) for loan losses 2,285 1,759 8,447 15,981 (1 ) (171 ) (1,765 ) (355 ) 8,966 17,214 Noninterest income 21,918 44,408 23,964 45,701 14,816 28,792 5,884 13,528 66,582 132,429 Noninterest expense 61,032 122,685 87,799 176,070 13,461 27,181 (618 ) (3,610 ) 161,674 322,326 Net income/(loss) 38,963 79,816 13,142 24,815 4,425 8,264 54 828 56,584 113,723 AVERAGES: Assets $ 9,437,824 $ 9,445,975 $ 5,951,665 $ 5,898,835 $ 290,798 $ 296,461 $ 9,449,572 $ 9,374,463 $ 25,129,859 $ 25,015,734 Loans 9,533,843 9,520,262 5,702,015 5,636,666 281,013 286,484 60,490 59,274 15,577,361 15,502,686 Earning assets 9,828,867 9,811,770 5,707,400 5,645,469 281,013 286,484 6,535,441 6,483,544 22,352,721 22,227,267 Deposits 6,777,434 6,831,887 11,105,954 11,115,005 1,188,563 1,214,617 610,711 573,990 19,682,662 19,735,499 Economic capital 1,355,049 1,349,289 767,803 763,446 111,770 109,969 657,810 656,765 2,892,432 2,879,469

Derivatives and Hedging Activit

Derivatives and Hedging Activities	6 Months Ended
	Jun. 30, 2016
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Derivatives and Hedging Activities	Derivatives and Hedging Activities The Corporation, through its mortgage banking and risk management operations, is party to various derivative instruments that are used for asset and liability management and customers' financing needs. Derivative instruments are contracts between two or more parties that have a notional amount and underlying variable, require no net investment and allow for the net settlement of positions. The notional amount serves as the basis for the payment provision of the contract and takes the form of units, such as shares or dollars. The underlying variable represents a specified interest rate, index or other component. The interaction between the notional amount and the underlying variable determines the number of units to be exchanged between the parties and influences the market value of the derivative contract. The predominant derivative and hedging activities include interest rate swaps and certain mortgage banking activities. Generally, these instruments help the Corporation manage exposure to market risk, and meet customer financing needs. Market risk represents the possibility that economic value or net interest income will be adversely affected by fluctuations in external factors, such as interest rates, market-driven rates and prices or other economic factors. Foreign exchange contracts are entered into to accommodate the needs of customers. Derivatives Designated in Hedge Relationships The Corporation's fixed rate loans result in exposure to losses in value as interest rates change. The risk management objective for hedging fixed rate loans is to convert the fixed rate received to a floating rate. The Corporation hedges exposure to changes in the fair value of fixed rate loans through the use of swaps. For a qualifying fair value hedge, changes in the value of the derivatives that have been highly effective as hedges are recognized in current period earnings along with the corresponding changes in the fair value of the designated hedged item attributable to the risk being hedged. At June 30, 2016 , December 31, 2015 , and June 30, 2015 , the notional values or contractual amounts and fair value of the Corporation's derivatives designated in hedge relationships were as follows: Asset Derivatives Liability Derivatives June 30, 2016 December 31, 2015 June 30, 2015 June 30, 2016 December 31, 2015 June 30, 2015 (In thousands) Notional/ Contract Amount Fair Value (1) Notional/ Contract Amount Fair Value (1) Notional/ Contract Amount Fair Value (1) Notional/ Contract Amount Fair Value (2) Notional/ Contract Amount Fair Value (2) Notional/ Contract Amount Fair Value (2) Interest rate swaps: Commercial loan swaps (FRAPS) $ — $ — $ — $ — $ — $ — $ 50,668 $ 2,772 $ 55,689 $ 3,536 $ 75,794 $ 5,104 Sub debt swap 250,000 29,760 250,000 8,739 250,000 1,153 — — — — — — Fair value hedges $ 250,000 $ 29,760 $ 250,000 $ 8,739 $ 250,000 $ 1,153 $ 50,668 $ 2,772 $ 55,689 $ 3,536 $ 75,794 $ 5,104 ( 1) Included in "Other assets" on the Consolidated Balance Sheets (2) Included in "Other liabilities" on the Consolidated Balance Sheets Commercial Loan Swaps. Prior to 2008, the Corporation entered into interest rate swaps with dealer counterparties to convert certain fixed rate loans to variable rate instruments over the terms of the loans (termed by the Corporation as the FRAP Program). These interest rate swaps are designated as fair value hedges and met the criteria to qualify for the short cut method of accounting. Based on this shortcut method of accounting treatment, no ineffectiveness is assumed. The Corporation discontinued originating interest rate swaps under the FRAP Program in February 2008. Sub Debt Swap. During the fourth quarter of 2014, the Corporation entered into a $250.0 million interest rate swap simultaneously with its long-term debt issuance for interest rate risk management purposes. This interest rate swap effectively modifies the receipt of fixed-rate interest amounts in exchange for floating-rate interest payments over the life of the swap, without an exchange of the underlying principal amount. This interest rate swap was designated as a fair value hedge, and through application of the “shortcut method of accounting”, there is an assumption that the hedge is effective in offsetting changes in the fair value of the long-term debt due to changes in the U.S. LIBOR swap rate (the designated benchmark interest rate). Derivatives Not Designated in Hedge Relationships As of June 30, 2016 , December 31, 2015 , and June 30, 2015 , the notional values or contractual amounts and fair value of the Corporation's derivatives not designated in hedge relationships were as follows: Asset Derivatives Liability Derivatives June 30, 2016 December 31, 2015 June 30, 2015 June 30, 2016 December 31, 2015 June 30, 2015 (In thousands) Notional/ Contract Amount Fair Value (1) Notional/ Contract Amount Fair Value (1) Notional/ Contract Amount Fair Value (1) Notional/ Contract Amount Fair Value (2) Notional/ Contract Amount Fair Value (2) Notional/ Contract Amount Fair Value (2) Interest rate swaps $ 1,904,459 $ 87,575 $ 1,824,576 $ 48,920 $ 1,726,600 $ 46,216 $ 1,904,459 $ 87,575 $ 1,824,576 $ 48,920 $ 1,726,600 $ 46,216 Mortgage loan commitments 32,802 253 20,635 149 52,024 342 — — — — — — Forward sales contracts — — — — 15,200 106 8,059 61 9,659 5 — — Credit contracts — — — — — — 74,945 7 73,715 — 73,512 — Foreign exchange 20,180 254 13,671 299 29,687 256 18,571 207 11,706 284 15,823 177 Equity swap — — — — — — 35,034 — 36,631 — 31,718 — Total $ 1,957,441 $ 88,082 $ 1,858,882 $ 49,368 $ 1,823,511 $ 46,920 $ 2,041,068 $ 87,850 $ 1,956,287 $ 49,209 $ 1,847,653 $ 46,393 (1) Included in "Other assets" on the Consolidated Balance Sheets (2) Included in "Other liabilities" on the Consolidated Balance Sheets Interest Rate Swaps. The Corporation's Back-to-Back Program is an interest rate swap program for commercial loan customers that provides the customer with a fixed rate loan while creating a variable rate asset for the Corporation through the customer entering into an interest rate swap with the Corporation on terms that match the loan. The Corporation offsets its risk exposure by entering into an offsetting interest rate swap with a dealer counterparty. These swaps do not qualify as designated hedges; therefore, each swap is accounted for as a standalone derivative. Mortgage banking . In the normal course of business, the Corporation sells originated mortgage loans into the secondary mortgage loan markets. During the period of loan origination and prior to the sale of the loans in the secondary market, the Corporation has exposure to movements in interest rates associated with mortgage loans that are in the "mortgage pipeline" and the "mortgage warehouse". A pipeline loan is one in which the Corporation has entered into a written mortgage loan commitment with a potential borrower that will be held for resale. Once a mortgage loan is closed and funded, it is included within the mortgage warehouse of loans awaiting sale and delivery into the secondary market. Written loan commitments that relate to the origination of mortgage loans that will be held for resale are considered free-standing derivatives and do not qualify for hedge accounting. Written loan commitments generally have a term of up to 60 days before the closing of the loan. The loan commitment does not bind the potential borrower to entering into the loan, nor does it guarantee that the Corporation will approve the potential borrower for the loan. Therefore, when determining fair value, the Corporation makes estimates of expected "fallout" (loan commitments not expected to close), using models which consider cumulative historical fallout rates and other factors. In addition, expected net future cash flows related to loan servicing activities are included in the fair value measurement of a written loan commitment. Written loan commitments in which the borrower has locked in an interest rate result in market risk to the Corporation to the extent market interest rates change from the rate quoted to the borrower. The Corporation economically hedges the risk of changing interest rates associated with its interest rate lock commitments by entering into forward sales contracts. The Corporation's warehouse (mortgage loans held for sale) is subject to changes in fair value, due to fluctuations in interest rates from the loan's closing date through the date of sale of the loan into the secondary market. Typically, the fair value of the warehouse declines in value when interest rates increase and rises in value when interest rates decrease. To mitigate this risk, the Corporation enters into forward sales contracts on a significant portion of the warehouse to provide an economic hedge against those changes in fair value. Mortgage loans held for sale and the forward sales contracts were recorded at fair value with ineffective changes in value recorded in current earnings as Loan sales and servicing income. Credit contracts. The Corporation has bought and sold credit protection in the form of participations in interest rate swaps (swap participations). These swap participations, which meet the definition of credit derivatives, were entered into in the ordinary course of business. Credit derivatives, whereby the Corporation has purchased credit protection, entitles the Corporation to receive a payment from the counterparty when the customer fails to make payment on any amounts due to the Corporation. Swap participations whereby the Corporation has purchased credit protection have maturities that range between less than two to seven years. For swap participations where the Corporation sold credit protection, the Corporation has guaranteed payment in the event that the counterparty experiences a loss on the swap due to a failure to pay by the Corporation's commercial loan customer. The Corporation simultaneously entered into reimbursement agreements with the commercial loan customers obligating the customers to reimburse the Corporation for any payments it makes under the swap participations. The Corporation monitors its payment risk on its swap participations by monitoring the creditworthiness of its commercial loan customers, which is based on the normal credit review process the Corporation would have performed had it entered into these derivative instruments directly with the commercial loan customers. Credit derivatives whereby the Corporation has sold credit protection have maturities ranging from less than one year to nine years. The Corporation's maximum estimated exposure to sold swap participations, as measured by projecting a maximum value of the guaranteed derivative instruments based on interest rate curve simulations and assuming 100% default by all obligors on the maximum values, was approximately $7.1 million as of June 30, 2016 . The fair values of the written swap participations were not material at June 30, 2016 , December 31, 2015 , and June 30, 2015 . Gains and losses recognized in income on non-designated hedging instruments for the three and six months ended June 30, 2016 and 2015 are as follows: Derivatives not instruments Location of Gain/(Loss) Derivative Amount of Gain / (Loss) Recognized in Income on Derivatives (In thousands) Three Months Ended June 30, Six Months Ended June 30, 2016 2015 2016 2015 Mortgage loan commitments Loan sales and servicing income $ 12 $ (46 ) $ 105 $ (1,066 ) Forward sales contracts Loan sales and servicing income 20 175 (56 ) 378 Foreign exchange contracts Other operating income 766 165 1,585 (712 ) Equity swap Other operating expense — — — — Total $ 798 $ 294 $ 1,634 $ (1,400 ) Counterparty Credit Risk Like other financial instruments, derivatives contain an element of "credit risk" or the possibility that the Corporation will incur a loss because a counterparty, which may be a bank, a broker-dealer, a derivative clearing organization, or a customer, fails to meet its contractual obligations. This risk is measured as the expected positive replacement value of contracts. All derivative contracts may be executed only with exchanges or counterparties approved by the Corporation's Board of Directors. Where contracts have been created for customers, the Corporation enters into derivatives with dealers to offset its risk exposure. To manage the credit exposure to exchanges and counterparties, the Corporation generally enters into bilateral collateral agreements with collateral delivery thresholds on all bilateral derivatives. Beyond the threshold levels, collateral in the form of securities made available from the investment portfolio or other forms of collateral acceptable under the bilateral collateral agreements are provided. The threshold levels for each counterparty are approved by the Corporation's Board of Directors. The Corporation generally posts collateral in the form of highly rated Government Agency issued bonds or MBS. The majority of the Corporation's over-the-counter derivative transactions are cleared through a recognized derivative clearing organization ("Clearinghouse"). For cleared derivatives, the Clearinghouse is the Corporation's counterparty. The Clearinghouse notifies the clearing agent of the required initial and variation margin and the clearing agent notifies the Corporation of the required initial and variation margin. The requirement that the Corporation post initial and variation margin through the clearing agent to the Clearinghouse exposes the Corporation to institutional credit risk if the clearing agent or the Clearinghouse fails to meet its obligations. The use of cleared derivatives is intended to mitigate credit risk exposure because a central counterparty is substituted for individual counterparties and collateral is posted daily through a clearing agent for changes in the value of cleared derivatives. The fair value of investment securities posted as collateral against derivative liabilities was $55.9 million , $47.2 million , and $45.6 million as of June 30, 2016 , December 31, 2015 , and June 30, 2015 , respectively. Derivative assets and liabilities are recorded at fair value on the balance sheet and do not take into account the effects of master netting agreements the Corporation has with its financial institution counterparties. These master netting agreements allow the Corporation to settle all derivative contracts held with a single financial institution counterparty on a net basis, and to offset net derivative positions with related collateral, where applicable. Collateral, usually in the form of investment securities, is posted by the counterparty in the net liability position in accordance with contract thresholds. The following tables illustrate the potential effect of the Corporation's derivative master netting arrangements, by type of financial instrument, on the Corporation's statement of financial position as of June 30, 2016 , December 31, 2015 , and June 30, 2015 . The swap agreements the Corporation has in place with its commercial customers are not subject to enforceable master netting arrangements, and, therefore, are excluded from these tables. As of June 30, 2016 Gross amounts recognized Gross amounts offset in the consolidated balance sheet Net amounts presented in the consolidated balance sheet Gross amounts not offset in the consolidated balance sheet Net amount (In thousands) Financial instruments (1) Collateral (2) Derivative Assets Interest rate swaps - designated $ 29,760 $ — $ 29,760 $ — $ — $ 29,760 Interest rate swaps - non-designated 3 $ — 3 (3 ) — — Foreign exchange 76 — 76 (76 ) — — Total derivative assets $ 29,839 $ — $ 29,839 $ (79 ) $ — $ 29,760 Derivative liabilities Interest rate swaps - designated $ 2,772 $ — $ 2,772 $ — $ (2,772 ) $ — Interest rate swaps - non-designated 87,572 — 87,572 (3 ) (87,569 ) — Foreign exchange 131 — 131 (76 ) (55 ) — Total derivative liabilities $ 90,475 $ — $ 90,475 $ (79 ) $ (90,396 ) $ — As of December 31, 2015 Gross amounts recognized Gross amounts offset in the consolidated balance sheet Net amounts presented in the consolidated balance sheet Gross amounts not offset in the consolidated balance sheet Net amount (In thousands) Financial instruments (1) Collateral (2) Derivative assets Interest rate swaps - designated $ 8,739 $ — $ 8,739 $ — $ — $ 8,739 Interest rate swaps - non-designated 155 — 155 (155 ) — — Foreign exchange 270 — 270 (32 ) (238 ) — Total derivative assets $ 9,164 $ — $ 9,164 $ (187 ) $ (238 ) $ 8,739 Derivative liabilities Interest rate swaps - designated $ 3,536 $ — $ 3,536 $ — $ (3,536 ) $ — Interest rate swaps - non-designated 48,765 — 48,765 (155 ) (48,610 ) — Foreign exchange 32 — 32 (32 ) — — Total derivative liabilities $ 52,333 $ — $ 52,333 $ (187 ) $ (52,146 ) $ — As of June 30, 2015 Gross amounts recognized Gross amounts offset in the consolidated balance sheet Net amounts presented in the consolidated balance sheet Gross amounts not offset in the consolidated balance sheet Net amount (In thousands) Financial instruments (1) Collateral (2) Derivative assets Interest rate swaps - designated 1,153 — 1,153 — — 1,153 Interest rate swaps - non-designated $ 414 $ — $ 414 $ (414 ) $ — $ — Foreign exchange 164 — 164 (49 ) (115 ) — Total derivative assets $ 1,731 $ — $ 1,731 $ (463 ) $ (115 ) $ 1,153 Derivative liabilities Interest rate swaps - designated $ 5,104 $ — $ 5,104 $ — $ (5,104 ) $ — Interest rate swaps - non-designated 45,802 — 45,802 (414 ) (45,388 ) — Foreign exchange 49 — 49 (49 ) — — Total derivative liabilities $ 50,955 $ — $ 50,955 $ (463 ) $ (50,492 ) $ — (1) For derivative assets, this includes any derivative liability fair values that could be offset in the event of counterparty default. For derivative liabilities, this includes any derivative asset fair values that could be offset in the event of counterparty default. (2) For derivate assets, this includes the fair value of collateral received by the Corporation from the counterparty. Securities received as collateral are not included in the Consolidated Balance Sheets unless the counterparty defaults. For derivative liabilities, this includes the fair value of securities pledged by the Corporation to the counterparty. These securities are included in the Consolidated Balance Sheets unless the Corporation defaults.

Benefit Plans

Benefit Plans	6 Months Ended
	Jun. 30, 2016
Compensation and Retirement Disclosure [Abstract]
Benefit Plans	Benefit Plans The Corporation sponsors several qualified and nonqualified pension and other postretirement plans for certain of its employees. The net periodic pension cost is based on estimated values provided by an outside actuary. The components of net periodic benefit cost are as follows: Pension Benefits Three Months Ended June 30, Six Months Ended June 30, (In thousands) 2016 2015 2016 2015 Service cost $ 198 $ 207 $ 396 $ 415 Interest cost 3,649 3,517 7,298 7,035 Expected return on assets (3,788 ) (3,902 ) (7,576 ) (7,804 ) Amortization of unrecognized prior service costs 75 570 150 1,140 Amortization of actuarial losses/(gains) 830 1,057 1,660 2,113 Net periodic pension cost $ 964 $ 1,449 $ 1,928 $ 2,899 Postretirement Benefits Three Months Ended June 30, Six Months Ended June 30, (In thousands) 2016 2015 2016 2015 Service cost $ 26 $ 41 $ 52 $ 83 Interest cost 64 144 127 288 Amortization of unrecognized prior service costs (636 ) (160 ) (1,271 ) (319 ) Amortization of actuarial losses/(gains) 245 81 490 163 Net periodic postretirement cost $ (301 ) $ 106 $ (602 ) $ 215 For further information on the Corporation's employee benefit plans, refer to Note 13 (Benefit Plans) to the consolidated financial statements in the 2015 Form 10-K.

Fair Value Measurement

Fair Value Measurement	6 Months Ended
	Jun. 30, 2016
Fair Value Disclosures [Abstract]
Fair Value Measurement	Fair Value Measurement As defined in ASC 820, Fair Value Measurements and Disclosures , fair value is defined as the price to sell an asset or transfer a liability in an orderly transaction between market participants in the principal market or most advantageous market for the asset or liability. Fair value is based on quoted market prices, when available, for identical or similar assets or liabilities. In the absence of quoted market prices, Management determines the fair value of the Corporation's assets and liabilities using valuation models or third-party pricing services. Both of these approaches rely on market-based parameters when available, such as interest rate yield curves, option volatilities and credit spreads, or unobservable inputs. Unobservable inputs may be based on Management's judgment, assumptions and estimates related to credit quality, liquidity, interest rates and other relevant inputs. GAAP establishes a three-level valuation hierarchy for determining fair value that is based on the transparency of the inputs used in the valuation process. The inputs used in determining fair value in each of the three levels of the hierarchy, highest ranking to lowest, are as follows: • Level 1 — Quoted prices (unadjusted) for identical assets or liabilities in active markets that the entity has the ability to access as of the measurement date. • Level 2 — Significant other observable inputs other than Level 1 prices such as quoted prices for similar assets or liabilities; quoted prices in markets that are not active; or other inputs that are observable or can be corroborated by observable market data. • Level 3 — Significant unobservable inputs that reflect a company's own assumptions about the assumptions that market participants would use in pricing an asset or liability. The level in the fair value hierarchy ascribed to a fair value measurement in its entirety is based on the lowest level input that is significant to the overall fair value measurement. Valuation adjustments, such as those pertaining to counterparty and the Corporation's own credit quality and liquidity, may be necessary to ensure that assets and liabilities are recorded at fair value. Credit valuation adjustments are made when market pricing does not accurately reflect the counterparty's credit quality. As determined by Management, liquidity valuation adjustments may be made to the fair value of certain assets to reflect the uncertainty in the pricing and trading of the instruments when Management is unable to observe recent market transactions for identical or similar instruments. Liquidity valuation adjustments are based on the following factors: • the amount of time since the last relevant valuation; • whether there is an actual trade or relevant external quote available at the measurement date; and • volatility associated with the primary pricing components. Management ensures that fair value measurements are accurate and appropriate by relying upon various controls, including: • an independent review and approval of valuation models; • recurring detailed reviews of profit and loss; and • a validation of valuation model components against benchmark data and similar products, where possible. Management reviews any changes to its valuation methodologies to ensure they are appropriate and justified, and refines valuation methodologies as more market-based data becomes available. Transfers between levels of the fair value hierarchy are recognized at the end of the reporting period. Additional information regarding the Corporation's accounting policies for determining fair value is provided in Note 1 ( Summary of Significant Accounting Policies ) under the heading "Fair Value Measurements". The following tables present the balance of assets and liabilities measured at fair value on a recurring and nonrecurring basis as of June 30, 2016 , December 31, 2015 , and June 30, 2015 : Fair Value by Hierarchy (In thousands) June 30, 2016 Level 1 Level 2 Level 3 Recurring fair value measurement Available-for-sale securities: Marketable equity securities $ 2,788 $ 2,788 $ — $ — U.S. treasury notes & bonds 4,997 — 4,997 — U.S. government agency debentures 2,528 — 2,528 — U.S. States and political subdivisions 151,547 — 151,547 — Residential mortgage-backed securities: U.S. government agencies 860,247 — 860,247 — Commercial mortgage-backed securities: U.S. government agencies 202,048 — 202,048 — Residential collateralized mortgage-backed securities: U.S. government agencies 2,353,018 — 2,353,018 — Non-agency 3 — — 3 Commercial collateralized mortgage-backed securities: U.S. government agencies 398,611 — 398,611 — Corporate debt securities 51,107 — — 51,107 Asset-backed securities: Collateralized loan obligations 291,794 — — 291,794 Total available for sale securities 4,318,688 2,788 3,972,996 342,904 Residential loans held for sale 3,962 — 3,962 — Derivative assets: Interest rate swaps - fair value hedges 29,760 — 29,760 — Interest rate swaps - nondesignated 87,575 — 87,575 — Mortgage loan commitments 253 — 253 — Foreign exchange 254 — 254 — Total derivative assets 117,842 — 117,842 — Total fair value of assets (1) $ 4,440,492 $ 2,788 $ 4,094,800 $ 342,904 Derivative liabilities: Interest rate swaps - fair value hedges $ 2,772 $ — $ 2,772 $ — Interest rate swaps - nondesignated 87,575 — 87,575 — Forward sales contracts 61 — 61 — Credit contracts 7 — 7 — Foreign exchange 207 — 207 — Total derivative liabilities 90,622 — 90,622 — True-up liability 16,170 — — 16,170 Total fair value of liabilities (1) $ 106,792 $ — $ 90,622 $ 16,170 Nonrecurring fair value measurement Mortgage servicing rights (2) $ 15,954 $ — $ — $ 15,954 Impaired loans (3) 104,208 — — 104,208 Other property (4) 10,027 — — 10,027 Other real estate covered by loss share (5) 4 — — 4 Total nonrecurring fair value $ 130,193 $ — $ — $ 130,193 (1) There were no transfers between levels 1, 2 or 3 of the fair value hierarchy during the three months ended June 30, 2016 . (2) MSRs with a recorded investment of $17.3 million were reduced by a specific valuation allowance totaling $1.5 million to a reported carrying value of $15.8 million resulting in recognition of $0.7 million in expense included in loan sales and servicing income in the three months ended June 30, 2016 . (3) At June 30, 2016 , collateral dependent impaired loans with a recorded investment of $116.1 million were reduced by specific valuation allowance allocations totaling $11.9 million to a reported net carrying value of $104.2 million . (4) Amounts do not include assets held at cost at June 30, 2016 . During the three months ended June 30, 2016 , the re-measurement of foreclosed assets at fair value subsequent to initial recognition resulted in losses of $0.7 million included in noninterest expense. Fair Value by Hierarchy (In thousands) December 31, 2015 Level 1 Level 2 Level 3 Recurring fair value measurement Available-for-sale securities: Marketable equity securities $ 2,821 $ 2,821 $ — $ — U.S treasury notes & bonds 5,000 — 5,000 — U.S. government agency debentures 2,498 — 2,498 — U.S. States and political subdivisions 192,795 — 192,795 — Residential mortgage-backed securities: U.S. government agencies 906,229 — 906,229 — Commercial mortgage-backed securities: U.S. government agencies 172,109 — 172,109 — Residential collateralized mortgage-backed securities: U.S. government agencies 2,128,320 — 2,128,320 — Non-agency 4 — — 4 Commercial collateralized mortgage-backed securities: U.S. government agencies 216,319 — 216,319 — Corporate debt securities 52,229 — — 52,229 Asset-backed securities Collateralized loan obligations 289,411 — — 289,411 Total available-for-sale securities 3,967,735 2,821 3,623,270 341,644 Residential loans held for sale 5,472 — 5,472 — Derivative assets: Interest rate swaps - fair value hedges 8,739 — 8,739 — Interest rate swaps - nondesignated 48,920 — 48,920 — Mortgage loan commitments 149 — 149 — Foreign exchange 299 — 299 — Total derivative assets 58,107 — 58,107 — Total fair value of assets (1) $ 4,031,314 $ 2,821 $ 3,686,849 $ 341,644 Derivative liabilities: Interest rate swaps - fair value hedges $ 3,536 $ — $ 3,536 $ — Interest rate swaps - nondesignated 48,920 — 48,920 — Forward sale contracts 5 — 5 — Foreign exchange 284 — 284 — Total derivative liabilities 52,745 — 52,745 — True-up liability 14,750 — — 14,750 Total fair value of liabilities (1) $ 67,495 $ — $ 52,745 $ 14,750 Nonrecurring fair value measurement Mortgage servicing rights (2) $ 19,149 $ — $ — $ 19,149 Impaired loans (3) 71,428 — — 71,428 Other property (4) 18,576 — — 18,576 Other real estate covered by loss share (5) 365 — — 365 Total nonrecurring fair value $ 109,518 $ — $ — $ 109,518 (1) There were no transfers between levels 1, 2 or 3 of the fair value hierarchy during the year ended December 31, 2015 . (2) MSRs with a recorded investment of $18.9 million were reduced by a specific valuation allowance totaling $0.4 million to a reported carrying value of $18.5 million resulting in a recovery of previously recognized expense of $0.6 million in recoveries included in loans sales and servicing income in the year ended December 31, 2015 . (3) At December 31, 2015 , collateral dependent impaired loans with a recorded investment of $84.3 million were reduced by specific valuation allowance allocations totaling $12.9 million to a reported net carrying value of $71.4 million . (4) Amounts do not include assets held at cost at December 31, 2015 . During the year ended December 31, 2015 , the re-measurement of foreclosed assets at fair value subsequent to initial recognition resulted in losses of $4.5 million included in noninterest expense. (5) Amounts do not include assets held at cost at December 31, 2015 . During the year ended December 31, 2015 , the re-measurement of covered foreclosed assets at fair value subsequent to initial recognition resulted in losses of $0.6 million included in noninterest expense. Fair Value by Hierarchy (In thousands) June 30, 2015 Level 1 Level 2 Level 3 Recurring fair value measurement Available-for-sale securities: Marketable equity securities $ 2,824 $ 2,824 $ — $ — U.S. treasury notes & bonds 5,005 — 5,005 — U.S. government agency debentures 2,510 — 2,510 — U.S. States and political subdivisions 207,617 — 207,617 — Residential mortgage-backed securities: U.S. government agencies 960,852 — 960,852 — Commercial mortgage-backed securities: U.S. government agencies 170,338 — 170,338 — Residential collateralized mortgage-backed securities: U.S. government agencies 1,949,389 — 1,949,389 — Non-agency 5 — — 5 Commercial collateralized mortgage-backed securities: U.S. government agencies 228,438 — 228,438 — Corporate debt securities 53,450 — — 53,450 Asset-backed securities: Collateralized loan obligations 258,081 — — 258,081 Total available-for-sale securities 3,838,509 2,824 3,524,149 311,536 Residential loans held for sale 5,432 — 5,432 — Derivative assets: Interest rate swaps - fair value hedges 1,153 — 1,153 — Interest rate swaps - nondesignated 46,216 — 46,216 — Mortgage loan commitments 342 — 342 — Forward sale contracts 106 — 106 — Foreign exchange 256 — 256 — Total derivative assets 48,073 — 48,073 — Total fair value of assets (1) $ 3,892,014 $ 2,824 $ 3,577,654 $ 311,536 Derivative liabilities: Interest rate swaps - fair value hedges $ 5,104 $ — $ 5,104 $ — Interest rate swaps - nondesignated 46,216 — 46,216 — Foreign exchange 177 — 177 — Total derivative liabilities 51,497 — 51,497 — True-up liability 13,408 — — 13,408 Total fair value of liabilities (1) $ 64,905 $ — $ 51,497 $ 13,408 Nonrecurring fair value measurement Mortgage servicing rights (2) $ 20,809 $ — $ — $ 20,809 Impaired loans (3) 72,580 — — 72,580 Other property (4) 33,078 — — 33,078 Other real estate covered by loss share (5) 4 — — 4 Total nonrecurring fair value $ 126,471 $ — $ — $ 126,471 (1) There were no transfers between levels 1, 2 and 3 of the fair value hierarchy during the three months ended June 30, 2015 . (2) MSRs with a recorded investment of $20.6 million were reduced by a specific valuation allowance totaling $0.5 million to a reported carrying value of $20.1 million resulting in recovery of a previously recognized expense of $0.6 million in the three months ended June 30, 2015 . (3) At June 30, 2015 , collateral dependent impaired loans with a recorded investment of $82.7 million were reduced by specific valuation allowance allocations totaling $10.2 million to a reported net carrying value of $72.6 million . (4) Amounts do not include assets held at cost at June 30, 2015 . During the three months ended June 30, 2015 , the re-measurement of foreclosed assets at fair value subsequent to initial recognition resulted in losses of $2.1 million included in noninterest expense. (5) Amounts do not include assets held at cost at June 30, 2015 . During the three months ended June 30, 2015 , the re-measurement of covered foreclosed assets at fair value subsequent to initial recognition resulted in losses of $0.2 million included in noninterest expense. The following section describes the valuation methodologies used by the Corporation to measure financial assets and liabilities at fair value. During the three months ended June 30, 2016 and 2015 , there were no significant changes to the valuation techniques used by the Corporation to measure fair value. Available-for-sale securities. When quoted prices are available in an active market, securities are valued using the quoted price and are classified as Level 1. The quoted prices are not adjusted. Level 1 instruments include money market mutual funds. Securities are classified as Level 2 if quoted prices for identical securities are not available, and fair value is determined using pricing models by a third-party pricing service. Approximately 92% of the available-for-sale portfolio is Level 2. For the majority of available-for sale securities, the Corporation obtains fair value measurements from an independent third party pricing service. These instruments include: municipal bonds; bonds backed by the U.S. government; corporate bonds; MBS; securities issued by the U.S. Treasury; and certain agency CMOs. The independent pricing service uses industry-standard models to price U.S. government agencies and MBS that consider various assumptions, including time value, yield curves, volatility factors, prepayment speeds, default rates, loss severity, current market and contractual prices for the underlying financial instruments, as well as other relevant economic measures. Obligations of state and political subdivisions are valued using a matrix, or grid, pricing in which securities are benchmarked against the treasury rate based on credit rating. For collateralized mortgage securities, depending on the characteristics of a given tranche, a volatility driven multidimensional static model or Option-Adjusted Spread model is generally used. Substantially all assumptions used by the independent pricing service for securities classified as Level 2 are observable in the marketplace, can be derived from observable data, or are supported by observable levels at which transactions are executed in the marketplace. Securities are classified as Level 3 when there is limited activity in the market for a particular instrument and fair value is determined by obtaining broker quotes. As of June 30, 2016 , 8% of the available-for-sale portfolio is Level 3, which consists of single issuer trust preferred securities and CLOs. The single issuer trust preferred securities are measured at unadjusted prices obtained from the independent pricing service. The independent pricing service prices these instruments through a broker quote when sufficient information, such as cash flows or other security structure or market information, is not available to produce an evaluation. Broker-quoted securities are adjusted by the independent pricing service based solely on the receipt of updated quotes from market makers or broker-dealers recognized as market participants. A list of such issues is compiled by the independent pricing service daily. For broker-quoted issues, the independent pricing service applies a zero spread relationship to the bid-side valuation, resulting in the same values for the mean and ask. CLO are securitized products where payments from multiple middle-sized and large business loans are pooled together and segregated into different classes of bonds with payments on these bonds based on their priority within the overall deal structure. The markets for such securities are generally characterized by low trading volumes and wide bid-ask spreads, all driven by more limited market participants. Although estimated prices are generally obtained for such securities, the level of market observable assumptions used is limited in the valuation. Specifically, market assumptions regarding credit adjusted cash flows and liquidity influences on discount rates were difficult to observe at the individual bond level. Accordingly, the securities are currently valued by a third party that primarily utilizes dealer or pricing service prices and, subsequently, verifies this pricing through a disciplined process to ensure proper valuations and to highlight differences in cash flow modeling or other risks to determine if the market perception of the risk of a CLO is beginning to deviate from other similar tranches. This is done by establishing ranges for appropriate pricing yields for each CLO tranche and, using a standardized cash flow scenario, ensuring yields are consistent with expectations. On a monthly basis, Management validates the pricing methodologies utilized by our independent pricing service to ensure the fair-value determination is consistent with the applicable accounting guidance and that the investments are properly classified in the fair value hierarchy. Management substantiates the fair values determined for a sample of securities held in portfolio by reviewing the key assumptions used by the independent pricing service to value the securities and comparing the fair values to prices from other independent sources for the same and similar securities. Management analyzes variances and conducts additional research with the independent pricing service, if necessary, and takes appropriate action based on its findings. Loans held for sale. These loans are regularly traded in active markets through programs offered by FHLMC and FNMA, and observable pricing information is available from market participants. The prices are adjusted as necessary to include any embedded servicing value in the loans and to take into consideration the specific characteristics of certain loans. These adjustments represent unobservable inputs to the valuation but are not considered significant to the fair value of the loans. Accordingly, residential real estate loans held for sale are classified as Level 2. Impaired loans. Certain impaired collateral dependent loans are reported at fair value less costs to sell the collateral. Collateral values are estimated using Level 3 inputs, consisting of third-party appraisals or price opinions and internal adjustments necessary in the judgment of Management to reflect current market conditions and current operating results for the specific collateral. Collateral may be in the form of real estate or personal property including equipment and inventory. The vast majority of the collateral is real estate. When impaired collateral dependent loans are individually re-measured and reported at fair value of the collateral, less costs to sell, a direct loan charge-off to the ALL and/or a specific valuation allowance allocation is recorded. Other Property. Certain other property which consists of foreclosed assets and properties securing residential and commercial loans, upon initial recognition and transfer from loans, are re-measured and reported at fair value less costs to sell to the property through a charge-off to the ALL based on the fair value of the foreclosed assets. The fair value of a foreclosed asset, upon initial recognition, is estimated using Level 3 inputs, consisting of third-party appraisals or price opinions and internal adjustments necessary in the judgment of Management to reflect current market conditions and current operating results for the specific collateral. Subsequent to foreclosure, valuations are updated periodically, and the assets may be written down further through a charge to noninterest expense. Mortgage Servicing Rights. The Corporation carries its MSRs at lower of cost or fair value, and, therefore, they are subject to fair value measurements on a nonrecurring basis. Since sales of MSRs tend to occur in private transactions and the precise terms and conditions of the sales are typically not readily available, there is a limited market to refer to in determining the fair value of MSRs. As such, like other participants in the mortgage banking business, the Corporation relies primarily on a discounted cash flow model, incorporating assumptions about loan prepayment rates, discount rates, servicing costs and other economic factors, to estimate the fair value of its mortgage servicing rights. Since the valuation model uses significant unobservable inputs, the Corporation classifies MSRs within Level 3. The Corporation utilizes a third-party vendor to perform the modeling to estimate the fair value of its MSRs. The Corporation reviews the estimated fair values and assumptions used by the third party in the model on a quarterly basis. The Corporation also compares the estimates of fair value and assumptions to recent market activity and against its own experience. See Note 11 ( Mortgage Servicing Rights and Mortgage Servicing Activity ) for further information on MSRs valuation assumptions. Derivatives. The Corporation's derivatives include interest rate swaps and written loan commitments and forward sales contracts related to residential mortgage loan origination activity. Valuations for interest rate swaps are derived from third-party models whose significant inputs are readily observable market parameters, primarily yield curves, with appropriate adjustments for liquidity and credit risk. These fair value measurements are classified as Level 2. The fair values of written loan commitments and forward sales contracts on the associated loans are based on quoted prices for similar loans in the secondary market, consistent with the valuation of residential mortgage loans held for sale. Expected net future cash flows related to loan servicing activities are included in the fair value measurement of written loan commitments. A written loan commitment does not bind the potential borrower to entering into the loan, nor does it guarantee that the Corporation will approve the potential borrower for the loan. Therefore, when determining fair value, the Corporation makes estimates of expected "fallout" (interest rate locked pipeline loans not expected to close), using models, which consider cumulative historical fallout rates and other factors. Fallout can occur for a variety of reasons including falling rate environments when a borrower will abandon a fixed rate loan commitment at one lender and enter into a new lower fixed rate loan commitment at another, when a borrower is not approved as an acceptable credit by the lender or for a variety of other non-economic reasons. Fallout is not a significant input to the fair value of the written loan commitments in their entirety. These measurements are classified as Level 2. Derivative assets are typically secured through securities with financial counterparties or cross collateralization with a borrowing customer. Derivative liabilities are typically secured through the Corporation pledging securities to financial counterparties or, in the case of a borrowing customer, by the right of setoff. The Corporation considers factors such as the likelihood of default by itself and its counterparties, right of setoff, and remaining maturities in determining the appropriate fair value adjustments. All derivative counterparties approved by the Bank's Board are regularly reviewed, and appropriate business action is taken to adjust the exposure to certain counterparties, as necessary. Counterparty exposure is evaluated by netting positions that are subject to master netting agreements, as well as considering the amount of marketable collateral securing the position. This approach used to estimate impacted exposures to counterparties is also used by the Corporation to estimate its own credit risk on derivative liability positions. To date, no material losses have been incurred due to a counterparty's inability to pay any uncollateralized position. There was no significant change in value of derivative assets and liabilities attributed to credit risk for the three months ended June 30, 2016 . True-up liability. In connection with the George Washington and Midwest FDIC assisted acquisitions in 2010, the Bank has agreed to pay the FDIC should the estimated losses on the acquired loan portfolios as well as servicing fees earned on the acquired loan portfolios not meet thresholds as stated in the loss share agreements (the "true-up liability"). This contingent consideration is classified as a liability within accrued taxes, expenses and other liabilities on the consolidated balance sheets and is remeasured at fair value each reporting date until the contingency is resolved. The changes in fair value are recognized in earnings in the current period. An expected value methodology is used as a starting point for determining the fair value of the true-up liability based on the contractual terms prescribed in the loss share agreements. The resulting values under both calculations are discounted over 10 years (the period defined in the loss share agreements) to reflect the uncertainty in the timing and payment of the true-up liability by the Bank to arrive at a net present value. The discount rate used to value the true-up liability was 3.08% and 3.58% as of June 30, 2016 and 2015 , respectively. Increasing or decreasing the discount rate by one percentage point would change the liability by approximately $0.6 million and $0.6 million , respectively, as of June 30, 2016 . In accordance with the loss share agreements governing the Midwest acquisition, on July 15, 2020 (the “Midwest True-Up Measurement Date”), the Bank has agreed to pay to the FDIC half of the amount, if positive, calculated as: (1) 20% of the intrinsic loss estimate of the FDIC (approximately $152 million ); minus (2) the sum of (A) 25% of the asset premium paid in connection with the Midwest acquisition (approximately $21 million ); plus (B) 25% of the cumulative shared-loss payments (as defined below) plus (C) the cumulative servicing amount (as defined below). The fair value of the true-up liability associated with the Midwest acquisition was $10.5 million , $9.3 million , and $8.4 million as of June 30, 2016 , December 31, 2015 , and June 30, 2015 , respectively. In accordance with the loss share agreements governing the George Washington acquisition, on April 14, 2020 (the “George Washington True-Up Measurement Date”), the Bank has agreed to pay to the FDIC 50% of the excess, if any, of (1) 20% of the stated threshold (approximately $34.4 million ) less (2) the sum of (A) 25% of the asset discount (approximately $12 million ) received in connection with the George Washington acquisition plus (B) 25% of the cumulative shared-loss payments (as defined below) plus (C) the cumulative servicing amount (as defined below). The fair value of the true-up liability associated with the George Washington acquisition was $5.7 million , $5.5 million , and $5.0 million as of June 30, 2016 , December 31, 2015 , and June 30, 2015 , respectively. For the purposes of the above calculations, cumulative shared-loss payments means: (i) the aggregate of all of the payments made or payable to the Bank under the loss share agreements minus (ii) the aggregate of all of the payments made or payable to the FDIC. The cumulative servicing amount means the period servicing amounts (as defined in the loss share agreements) for every consecutive twelve-month period prior to and ending on the Midwest and George Washington True-Up Measurement Dates. The cumulative loss share payments and cumulative service amounts are components of the true-up calculations and are estimated each period end based on the expected amount and timing of cash flows of the acquired loan portfolios. See Note 3 ( Loans ) and Note 4 ( Allowance for Loan Losses ) for additional information on the estimated cash flows of the acquired loan portfolios. The changes in Level 3 assets and liabilities measured at fair value on a recurring basis for the three and six months ended June 30, 2016 and 2015 are summarized as follows: Three Months Ended June 30, Six Months Ended June 30, 2016 2015 2016 2015 (In thousands) Available-for-sale securities True-up liability Available-for-sale securities True-up liability Available-for-sale securities True-up liability Available-for-sale securities True-up liability Balance at beginning of period $ 334,157 $ 15,115 $ 346,685 $ 13,707 $ 341,644 $ 14,750 $ 339,187 $ 13,294 (Gains) losses included in earnings (1) — 1,055 — (299 ) — 1,420 — 114 Unrealized gains (losses) (2) 8,926 — 4,561 — 1,370 — 11,697 — Purchases — — 41,509 — — — 41,509 — Sales — — (71,832 ) — — — (71,832 ) — Settlements (179 ) — (9,387 ) — (110 ) — (9,025 ) — Balance at ending of period $ 342,904 $ 16,170 $ 311,536 $ 13,408 $ 342,904 $ 16,170 $ 311,536 $ 13,408 (1) Reported in "Other expense" (2) Reported in "Other comprehensive income (loss)" Fair Value Option Residential mortgage loans held for sale are recorded at fair value under fair value option accounting guidance. The election of the fair value option aligns the accounting for these loans with the related hedges. It also eliminates the requirements of the hedge accounting under GAAP. Interest income on loans held for sale is accrued on the principal outstanding primarily using the “simple-interest” method. None of these loans were 90 days or more past due, nor were any on nonaccrual as of June 30, 2016 , December 31, 2015 , and June 30, 2015 . The aggregate fair value, contractual balance and gain or loss on loans held for sale was as follows: (In thousands) June 30, 2016 December 31, 2015 June 30, 2015 Aggregate fair value carrying amount $ 3,962 $ 5,472 $ 5,432 Aggregate unpaid principal / contractual balance 3,836 5,320 5,285 Carrying amount over aggregate unpaid principal (1) $ 126 $ 152 $ 147 (1) These changes are included in "Loan sales and servicing income" in the Consolidated Statements of Income. Disclosures about Fair Value of Financial Instruments The carrying amount and estimated fair value of the Corporation’s financial instruments that are carried at either fair value or cost as of June 30, 2016 , December 31, 2015 , and June 30, 2015 are shown in the tables below. June 30, 2016 Carrying Amount Fair Value (In thousands) Total Level 1 Level 2 Level 3 Financial assets: Cash and cash equivalents $ 524,287 $ 524,287 $ 524,287 $ — $ — Available-for-sale securities 4,318,688 4,318,688 2,788 3,972,996 342,904 Held-to-maturity securities 2,514,161 2,545,740 — 2,545,740 — Other securities 148,367 148,367 — 148,367 — Loans held for sale 3,962 3,962 — 3,962 — Net originated loans 14,560,456 14,349,013 — — 14,349,013 Net acquired loans 1,484,380 1,532,344 — — 1,532,344 Net FDIC acquired loans and loss share receivable 149,121 149,121 — — 149,121 Accrued interest receivable 65,666 65,666 — 65,666 — Derivatives 117,842 117,842 — 117,842 — Financial liabilities: Deposits $ 20,952,643 $ 20,960,182 $ — $ 20,960,182 — Federal funds purchased and securities sold under agreements to repurchase 686,890 686,890 — 686,890 — Wholesale borrowings 468,447 473,187 — 473,187 — Long-term debt 526,389 522,151 — 522,151 — Accrued interest payable 10,632 10,632 — 10,632 — Derivatives 90,622 90,622 — 90,622 — December 31, 2015 Carrying Amount Fair Value (In thousands) Total Level 1 Level 2 Level 3 Financial assets: Cash and cash equivalents $ 463,817 $ 463,817 $ 463,817 $ — $ — Available-for-sale securities 3,967,735 3,967,735 2,821 3,623,270 341,644 Held-to-maturity securities 2,674,093 2,659,119 — 2,659,119 — Other securities 148,172 148,172 — 148,172 — Loans held for sale 5,472 5,472 — 5,472 — Net originated loans 14,013,370 13,795,058 — — 13,795,058 Net acquired loans 1,739,194 1,796,314 — — 1,796,314 Net FDIC acquired loans and loss share receivable 170,690 170,690 — — 170,690 Accrued interest receivable 67,887 67,887 — 67,887

Mortgage Servicing Rights and M

Mortgage Servicing Rights and Mortgage Servicing Activity	6 Months Ended
	Jun. 30, 2016
Transfers and Servicing [Abstract]
Mortgage Servicing Rights and Mortgage Servicing Activity	Mortgage Servicing Rights and Mortgage Servicing Activity In the six months ended June 30, 2016 and 2015 , the Corporation sold residential mortgage loans from the held for sale portfolio with unpaid principal balances of $15.6 million and $59.7 million , respectively, and recognized pretax gains of $0.4 million and $0.8 million , respectively, which are included as a component of loan sales and servicing income. As of June 30, 2016 and 2015 , the Corporation retained the related MSRs, for which it receives servicing fees, on $6.9 million and $51.1 million , respectively, of the loans sold. The Corporation serviced for third parties approximately $2.2 billion of residential mortgage loans at June 30, 2016 and $2.5 billion at June 30, 2015 . Loan servicing fees, not including valuation changes included in loan sales and servicing income, were $1.4 million and $1.6 million , respectively, for the six months ended June 30, 2016 and 2015 . Servicing rights are presented within other assets on the accompanying Consolidated Balance Sheets. The retained servicing rights are initially valued at fair value. Since MSRs do not trade in an active market with readily observable prices, the Corporation relies primarily on a discounted cash flow analysis model to estimate the fair value of its MSRs. Additional information can be found in Note 10 ( Fair Value Measurement ). MSRs are subsequently measured using the amortization method. Accordingly, the MSRs are amortized over the period of, and in proportion to, the estimated net servicing income and is recorded in loan sales and servicing income. Changes in the carrying amount of MSRs and MSRs valuation allowance are as follows: Three Months Ended June 30, Six Months Ended June 30, (In thousands) 2016 2015 2016 2015 Carrying amount of MSRs Beginning balance $ 18,127 $ 21,490 $ 18,938 $ 22,011 Additions 32 63 60 533 Amortization (849 ) (918 ) (1,688 ) (1,909 ) Ending balance 17,310 20,635 17,310 20,635 Valuation Allowance: Beginning balance (868 ) (1,131 ) (399 ) (955 ) Recoveries/(Additions) (681 ) 641 (1,150 ) 465 Ending balance (1,549 ) (490 ) (1,549 ) (490 ) MSRs, net carrying balance $ 15,761 $ 20,145 $ 15,761 $ 20,145 Fair value at end of period $ 15,954 $ 20,809 $ 15,954 $ 20,809 On a quarterly basis, the Corporation assesses its capitalized servicing rights for impairment based on their current fair value. For purposes of the impairment, the servicing rights are disaggregated based on loan type and interest rate which are the predominant risk characteristics of the underlying loans. A valuation allowance is established through a charge to earnings to the extent the amortized cost of the MSRs exceeds the estimated fair value by stratification. If it is later determined that all or a portion of the temporary impairment no longer exists for the stratification, the valuation is reduced through a recovery to earnings. No permanent impairment losses were written off against the allowance during the three and six months ended June 30, 2016 and 2015 . Key economic assumptions and the sensitivity of the current fair value of the MSRs related to immediate 10% and 25% adverse changes in those assumptions at June 30, 2016 are presented in the following table below. These sensitivities are hypothetical and should be used with caution. As the figures indicate, changes in the fair value based on 10% variation in the prepayment speed assumption generally cannot be extrapolated because the relationship of the change in the prepayment speed assumption to the change in fair value may not be linear. Also, in the below table, the effect of a variation in the discount rate assumption on the fair value of the MSRs is calculated independently without changing any other assumption. In reality, changes in one factor may result in changes in another (for example, changes in prepayment speed estimates could result in changes in the discount rates), which might magnify or counteract the sensitivities. (Dollars in thousands) Prepayment speed assumption (annual CPR) 13.41 % Decrease in fair value from 10% adverse change $ 964 Decrease in fair value from 25% adverse change $ 1,242 Discount rate assumption 9.39 % Decrease in fair value from 100 basis point adverse change $ 463 Decrease in fair value from 200 basis point adverse change $ 898 Expected weighted-average life (in months) 85

Contingencies and Guarantees

Contingencies and Guarantees	6 Months Ended
	Jun. 30, 2016
Commitments and Contingencies Disclosure [Abstract]
Contingencies and Guarantees	Commitments and Guarantees Commitments to Extend Credit Commitments to extend credit are agreements to lend to a customer provided there is no violation of any condition established in the contract. Loan commitments to originate residential mortgage loans held for sale and forward commitments to sell residential mortgage loans are considered derivative instruments, and the fair value of these commitments is recorded on the consolidated balance sheets. Additional information is provided in Note 10 (Fair Value Measurement). Commitments generally are extended at the then-prevailing interest rates, have fixed expiration dates or other termination clauses and may require payment of a fee. Since many of the commitments are expected to expire without being drawn upon, the total commitment amounts do not necessarily represent future cash requirements. Loan commitments involve credit risk not reflected on the balance sheet. The Corporation mitigates exposure to credit risk with internal controls that guide how applications for credit are reviewed and approved, how credit limits are established and, when necessary, how demands for collateral are made. Collateral held varies but may include accounts receivable, inventory, property, plant and equipment, and income-producing commercial properties. Management evaluates the creditworthiness of each prospective borrower on a case-by-case basis and, when appropriate, adjusts the allowance for probable credit losses inherent in all commitments. The reserve for unfunded lending commitments at June 30, 2016 , December 31, 2015 , and June 30, 2015 , included in “accrued expenses and other liabilities” on the Consolidated Balance Sheets, was $4.1 million , $4.1 million , and $3.9 million , respectively. The Corporation's credit risk associated with these instruments is represented by the contractual amounts indicated in the following table. Unused commitments to extend credit (In thousands) June 30, 2016 December 31, 2015 June 30, 2015 Commercial $ 3,505,383 $ 3,992,089 $ 3,746,824 Consumer 2,508,315 2,393,058 2,397,353 Total unused commitments to extend credit $ 6,013,698 $ 6,385,147 $ 6,144,177 Unused Commitments to Extend Credit. Commitments to extend credit are legally binding agreements to lend to a customer, provided there is no violation of any condition established in the contract. These commitments generally have fixed expiration dates or other termination clauses and may require payment of a fee. Collateral held varies but may include accounts receivable, inventory, property, plant and equipment, and income-producing commercial properties. Since many commitments expire without being drawn upon, the total contractual amount of commitments does not necessarily represent future cash requirements of the Corporation. Loan commitments to originate residential mortgage loans held for sale and forward commitments to sell residential mortgage loans are considered derivative instruments, and the fair value of these commitments is recorded on the consolidated balance sheets. Additional information is provided in Note 8 ( Derivatives and Hedging Activities ). Guarantees The Corporation is a guarantor in certain agreements with third parties. The Corporation's maximum credit risk associated with these instruments is represented by the contractual amounts indicated in the following table. Financial guarantees (In thousands) June 30, 2016 December 31, 2015 June 30, 2015 Standby letters of credit $ 220,913 $ 254,703 $ 255,418 Loans sold with recourse 11,543 12,902 28,891 Total financial guarantees $ 232,456 $ 267,605 $ 284,309 Standby Letters of Credit. Standby letters of credit obligate the Corporation to pay a specified third party when a customer fails to repay an outstanding loan or debt instrument, or fails to perform some contractual nonfinancial obligation. The Corporation has recourse against the customer for any amount required to be paid to a third party under a standby letter of credit. Collateral held varies, but may include marketable securities, equipment, inventory, and real estate. Except for short-term guarantees of $106.8 million at June 30, 2016 , the remaining guarantees extend in varying amounts through 2024 . Loans Sold with Recourse. The Corporation regularly sells service retained residential mortgage loans to GSEs as part of its mortgage banking activities. The Corporation provides customary representation and warranties to the GSEs in conjunction with these sales. These representations and warranties generally require the Corporation to repurchase assets if it is subsequently determined that a loan did not meet specified criteria, such as a documentation deficiency or rescission of mortgage insurance. If the Corporation is unable to cure or refute a repurchase request, the Corporation is generally obligated to repurchase the loan or otherwise reimburse the counterparty for losses. The Corporation also sells service released residential mortgage loans to other investors which contain early payment default recourse provisions. As of June 30, 2016 , December 31, 2015 , and June 30, 2015 , the Corporation had sold $9.1 million , $10.1 million , and $22.2 million , respectively, of outstanding residential mortgage loans to GSEs and other investors with recourse provisions. The Corporation had reserved $2.6 million , $2.7 million , and $6.7 million as of June 30, 2016 , December 31, 2015 , and June 30, 2015 , respectively, for estimated losses from representation and warranty obligations and early payment default recourse provisions. The reserve associated with loans sold with recourse is included in accrued taxes, expenses and other liabilities on the Consolidated Balance Sheets. The Corporation's reserve reflects Management's best estimate of losses. The Corporation's reserving methodology uses current information about investor repurchase requests, and assumptions about repurchase mix and loss severity, based upon the Corporation's most recent loss trends. The Corporation also considers qualitative factors that may result in anticipated losses differing from historical loss trends, such as loan vintage, underwriting characteristics and macroeconomic trends. Changes in the repurchase reserves for the three and six months ended June 30, 2016 and 2015 are as follows: Three Months Ended June 30, Six Months Ended June 30, (In thousands) 2016 2015 2016 2015 Balance at beginning of period $ 2,625 $ 6,650 $ 2,725 $ 7,250 Net increase/(decrease) to reserve — 363 (53 ) (39 ) Net realized (losses)/gains — (363 ) (47 ) (561 ) Balance at end of period $ 2,625 $ 6,650 $ 2,625 $ 6,650 Litigation In the normal course of business, the Corporation and its subsidiaries are at all times subject to pending and threatened legal actions, some for which the relief or damages sought are substantial. Based on information currently available, consultation with counsel, available insurance coverage and established reserves, Management believes that the eventual outcome of all claims against the Corporation and its subsidiaries will not, individually or in the aggregate, have a material adverse effect on its consolidated financial position or results of operations. However, it is possible that the ultimate resolution of these matters, if unfavorable, may be material to the results of operations for a particular period. The Corporation has not established any reserves with respect to any of this disclosed litigation because it is not possible to determine (i) whether a liability has been incurred; or (ii) an estimate of the ultimate or minimum amount of such liability. Reserves are established for legal claims only when losses associated with the claims are judged to be probable, and the loss can be reasonably estimated. In many lawsuits and arbitrations, including almost all of the class action lawsuits, it is not possible to determine whether a liability will be incurred or to estimate the ultimate or minimum amount of that liability until the case is close to resolution, in which case a reserve will not be recognized until that time. Overdraft Litigation Commencing in December 2010, two separate lawsuits were filed in the Summit County Court of Common Pleas and the Lake County Court of Common Pleas against the Corporation and the Bank. The complaints were brought as putative class actions on behalf of Ohio residents who maintained a checking account at the Bank and who incurred one or more overdraft fees as a result of the alleged re-sequencing of debit transactions. The lawsuit that had been filed in Summit County Court of Common Pleas was dismissed without prejudice on July 11, 2011. The remaining suit in Lake County seeks actual damages, disgorgement of overdraft fees, punitive damages, interest, injunctive relief and attorney fees. In December 2012, the trial court issued an order certifying a proposed class and the Bank and Corporation appealed the order to the Eleventh District Court of Appeals. In September 2013, the Eleventh District Court of Appeals affirmed in part and reversed in part the trial court's class certification order, and remanded the case back to the trial court for further consideration, in particular with respect to the class definition. On October 9, 2013, the Bank and Corporation filed with the Eleventh District Court of Appeals an application for reconsideration and application for consideration en banc. On November 20, 2013, the Eleventh District denied those applications. On December 4, 2013, the Bank and Corporation filed a notice of appeal with the Ohio Supreme Court, and on January 3, 2014, they filed with the Ohio Supreme Court a memorandum in support of the Court's exercising its jurisdiction and accepting the appeal. The plaintiffs filed an opposition, and, on April 24, 2014, the Ohio Supreme Court declined to accept jurisdiction. On August 6, 2014, the Bank and Corporation filed a motion asking the trial court to stay the lawsuit pending arbitration of claims subject to an arbitration agreement. That motion has been fully briefed and is awaiting a decision by the court. On August 25, 2014, the parties stipulated to a revised class definition (without affecting the pending motion to stay). An order approving the stipulated revised class was entered on June 3, 2016. CRBC 401(k) Litigation Participants in the Citizens Republic Bancorp 401(k) Plan filed a lawsuit in the United States Court for the Eastern District of Michigan in 2011, alleging that Citizens and certain of its officers and directors violated the Employee Retirement Income Security Act by offering Citizens common stock as an investment alternative in the Plan during periods when it was imprudent to do so and by failing to adequately monitor fiduciaries responsible for administering the Plan. The lawsuit, captioned Kidd v. Citizens Republic Bancorp, Inc. et al. , Case No. 2:11-cv-11709, asserts claims for monetary and injunctive relief on behalf of a purported class of participants and beneficiaries in the Plan who held Citizens stock in their Plan accounts during the period from April 17, 2008 to "the present." The plaintiffs filed a third amended complaint in November 2015, and the defendants have filed a motion that the complaint be dismissed. Defendant’s Motion to Dismiss was granted by Court on May 29, 2016. Plaintiffs have filed a Notice of Appeal and the appellate court has scheduled a mediation conference for August 15, 2016. Merger litigation Five putative derivative and class action lawsuits have been filed by separate shareholders of FirstMerit Corporation (“FirstMerit”) relating to the proposed merger between Huntington Bancshares, Inc. (“Huntington”) and FirstMerit. Two of those lawsuits were filed in the Summit County Common Pleas Court, Ohio: W. Patrick Murray v. Huntington Bancshares Incorporated , Case No. CV-2016-02-0917, was filed on February 11, 2016; and The Robinson Family Trust v. Paul Greig , Case No. CV-2016-02-0981, was filed on February 17, 2016 (the “State Court Lawsuits”). On April 14, 2016, the State Court Lawsuits were consolidated. The State Court Lawsuits consolidated complaint alleges that the individual directors of FirstMerit breached their fiduciary duties by approving a proposed merger that allegedly undervalues FirstMerit, allegedly provides the directors with benefits not afforded FirstMerit shareholders, and allegedly includes deal protection devices to ensure that the proposed merger will be consummated. The consolidated complaint also alleges that the directors approved a Registration Statement on S-4, filed on March 4, 2016, (the “Registration Statement”) that omits material information about the proposed merger. It also alleges that Huntington aided and abetted the alleged breaches of fiduciary duty. It seeks declaratory and injunctive relief to prevent the consummation of the proposed merger, an award of fees and costs, and other equitable relief. The other three lawsuits were filed in the United States District Court for the Northern District of Ohio: Wojno v. FirstMerit Corp. , Case No. 5:16-cv-461, was filed on February 26, 2016; Wilkinson v. FirstMerit Corp. , Case No. 5:16-cv-723, was filed on March 23, 2016; and Hafner v. Greig , Case No 5:16-cv-762, was filed on March 28, 2016 (the “Federal Court Lawsuits”). On April 8, 2016, the parties to the Federal Court Lawsuits filed a stipulation that, among other things, would consolidate the actions and designate a consolidated complaint. The Motion to Consolidate was granted on May 9, 2016. The stipulation remains pending. Each complaint in the Federal Court Lawsuits makes similar allegations to the State Court Lawsuits consolidated complaint, and also alleges that the directors violated Sections 14(a) and 20(a) of the Securities Exchange of 1934 and Rule 14a-9 promulgated thereunder by approving the Registration Statement. The Hafner complaint also alleges that Huntington violated Section 20(a) of the Securities Exchange Act in connection with the Registration Statement. Each complaint in the Federal Court Lawsuits seeks similar relief to the State Court Lawsuits consolidated complaint. On April 13, 2016, the defendants in the State Court Lawsuits filed a motion to stay the State Court Lawsuits pending the resolution of the parallel Federal Court Lawsuits. The judge in the State Court Lawsuits granted defendant’s motion to stay on May 20, 2016. All further action in the State Court cases is stayed pending resolution of the consolidated Federal Court action. On or about June 8, 2016 the parties to the Federal Court litigation filed with the court a Memorandum of Understanding notifying it that the parties have agreed to a preliminary settlement in full of the pending litigation. The agreement, in substance, requires defendants to make additional disclosures to SEC filings prior to shareholder votes scheduled for June 13, 2016. In good faith defendants made such agreed upon disclosures prior to the vote. The parties also agreed to conduct confirmatory discovery as part of the overall settlement agreement. The parties are currently finalizing the scope of the discovery and setting dates for limited document production and depositions. The Federal Court has stayed all further action in the case pending submission of a final proposed settlement agreement.

Changes and Reclassifications O

Changes and Reclassifications Out of Accumulated Other Comprehensive Income	6 Months Ended
	Jun. 30, 2016
Changes and Reclassifications Out of Other Comprehensive Income [Abstract]
Changes and Reclassifications Out of Accumulated Other Comprehensive Income	Changes and Reclassifications Out of Accumulated Other Comprehensive Income The following table presents the changes in AOCI by component of comprehensive income for the three and six months ended June 30, 2016 and 2015 : Three Months Ended Six Months Ended June 30, 2016 June 30, 2016 (In thousands) Pretax Tax After tax Pretax Tax After tax Unrealized and realized securities gains and losses: Balance at the beginning of the period $ 14,447 $ 1,682 $ 12,765 $ (32,786 ) $ (15,840 ) $ (16,946 ) Changes in unrealized securities' holding gains/(losses) 31,489 11,431 20,058 79,868 28,994 50,874 Changes in unrealized securities' holding gains/(losses) that result from securities being transferred from available-for-sale into held-to-maturity (221 ) (79 ) (142 ) (1,072 ) (14 ) (1,058 ) Net losses/(gains) realized on sale of securities reclassified to noninterest income (2,164 ) (786 ) (1,378 ) (2,459 ) (892 ) (1,567 ) Balance at the end of the period 43,551 12,248 31,303 43,551 12,248 31,303 Pension plans and other postretirement benefits: Balance at the beginning of the period (93,852 ) (32,746 ) (61,106 ) (95,760 ) (33,432 ) (62,328 ) Amortization of actuarial losses/(gains) 1,076 390 686 3,244 1,163 2,081 Amortization of prior service cost reclassified to other noninterest expense (560 ) (204 ) (356 ) (820 ) (291 ) (529 ) Balance at the end of the period (93,336 ) (32,560 ) (60,776 ) (93,336 ) (32,560 ) (60,776 ) Total Accumulated Other Comprehensive Income $ (49,785 ) $ (20,312 ) $ (29,473 ) $ (49,785 ) $ (20,312 ) $ (29,473 ) Three Months Ended Six Months Ended June 30, 2015 June 30, 2015 (In thousands) Pretax Tax After tax Pretax Tax After tax Unrealized and realized securities gains and losses: Balance at the beginning of the period $ 24,728 $ 8,656 $ 16,072 $ (8,531 ) $ (2,985 ) $ (5,546 ) Changes in unrealized securities' holding gains/(losses) (28,642 ) (10,024 ) (18,618 ) 5,475 1,916 3,559 Changes in unrealized securities' holding gains/(losses) that result from securities being transferred from available-for-sale into held-to-maturity (575 ) (203 ) (372 ) (1,079 ) (378 ) (701 ) Net losses/(gains) realized on sale of securities reclassified to noninterest income (567 ) (198 ) (369 ) (921 ) (322 ) (599 ) Balance at the end of the period (5,056 ) (1,769 ) (3,287 ) (5,056 ) (1,769 ) (3,287 ) Pension plans and other postretirement benefits: Balance at the beginning of the period (100,520 ) (35,181 ) (65,339 ) (102,068 ) (35,722 ) (66,346 ) Amortization of actuarial losses/(gains) 1,138 399 739 2,276 797 1,479 Amortization of prior service cost reclassified to other noninterest expense 410 144 266 820 287 533 Balance at the end of the period (98,972 ) (34,638 ) (64,334 ) (98,972 ) (34,638 ) (64,334 ) Total Accumulated Other Comprehensive Income $ (104,028 ) $ (36,407 ) $ (67,621 ) $ (104,028 ) $ (36,407 ) $ (67,621 ) The following table presents current period reclassifications out of AOCI by component of comprehensive income for the three and six months ended June 30, 2016 and 2015 : Three Months Ended Six Months Ended Income statement line item presentation (In thousands) June 30, 2016 June 30, 2016 Realized (gains)/losses on sale of securities $ (2,164 ) $ (2,459 ) Investment securities losses (gains), net Tax expense (benefit) (36.3%) (786 ) (892 ) Income tax expense (benefit) Reclassified amount, net of tax $ (1,378 ) $ (1,567 ) Three Months Ended Six Months Ended Income statement line item presentation (In thousands) June 30, 2015 June 30, 2015 Realized (gains)/losses on sale of securities $ (567 ) $ (921 ) Investment securities losses (gains), net Tax expense (benefit) (35%) (198 ) (322 ) Income tax expense (benefit) Reclassified amount, net of tax $ (369 ) $ (599 )

Subsequent Events

Subsequent Events	6 Months Ended
	Jun. 30, 2016
Subsequent Events [Abstract]
Subsequent Events	Subsequent Events In preparing these financial statements, subsequent events were evaluated through the time the financial statements were issued. Financial statements are considered issued when they are widely distributed to all shareholders and other financial statement users, or filed with the SEC. In accordance with applicable accounting standards, all material subsequent events have been either recognized in the financial statements or disclosed in the notes to the financial statements. On July 8, 2016, the Corporation consummated the sale of four branches, located in Wisconsin, for a gain of approximately $1.2 million . As previously disclosed, on July 13, 2016, Huntington and FirstMerit have reached an agreement with the U.S. Department of Justice to divest 13 FirstMerit branches and associated assets, deposits and employees located in Ohio.

Significant Accounting Polici23

Significant Accounting Policies (Policies)	6 Months Ended
	Jun. 30, 2016
Accounting Policies [Abstract]
Basis of Presentation	Basis of Presentation - FirstMerit Corporation is a BHC whose principal asset is the Common Stock of its wholly-owned subsidiary, FirstMerit Bank, N. A. The Parent Company’s other subsidiaries include Citizens Savings Corporation of Stark County, FirstMerit Capital Trust I, and FirstMerit Risk Management, Inc. All significant intercompany balances and transactions have been eliminated in consolidation. The accounting and reporting policies of the Corporation conform to GAAP and to general practices within the financial services industry. The Consolidated Balance Sheet at December 31, 2015 has been derived from the audited consolidated financial statements at that date. The accompanying unaudited interim financial statements reflect all adjustments (consisting only of normally recurring adjustments) that are, in the opinion of Management, necessary for a fair statement of the results for the interim periods presented. Certain reclassifications of prior year’s amounts have been made to conform to the current year presentation. Such reclassifications had no effect on net earnings or equity. Certain information and note disclosures normally included in financial statements prepared in accordance with GAAP have been omitted in accordance with the rules of the SEC. The unaudited consolidated financial statements of the Corporation as of June 30, 2016 and 2015 are not necessarily indicative of the results that may be achieved for the full fiscal year or for any future period. These unaudited consolidated financial statements should be read in conjunction with the audited consolidated financial statements and notes included in the Corporation’s Annual Report on Form 10-K for the year ended December 31, 2015 (the “ 2015 Form 10-K”). There have been no significant changes in the current quarter to the Corporation’s accounting policies as disclosed in the 2015 Form 10-K. In preparing these accompanying unaudited interim consolidated financial statements, subsequent events were evaluated through the time the consolidated financial statements were issued.
Recently Adopted Accounting Standards	Recently Adopted Accounting Standards FASB ASU 2015-16, Business Combinations (Topic 805), Simplifying the Accounting for Measurement-Period Adjustments. The amendments in ASU 2015-16 require an entity to present separately on the face of the income statement or disclose in the notes the portion of the amount recorded in current-period earnings by line item that would have been recorded in previous reporting periods if the adjustment to the provisional amounts had been recognized as of the acquisition date. For public business entities, the amendments in this update are effective for fiscal years beginning after December 15, 2015, including interim periods within those fiscal years. The amendments in this update will be applied prospectively to adjustments to provisional amounts that occur after the effective date of this update with earlier application permitted for financial statements that have not been issued. The adoption of this guidance did not have a material effect on the Corporation's financial position or results of operations. FASB ASU 2015-5 , Intangibles—Goodwill and Other—Internal-Use Software (Subtopic 350-40): Customer’s Accounting for Fees Paid in a Cloud Computing Arrangement. The amendments in ASU 2015-05 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 GAAP for a customer’s accounting for service contracts. In addition, the guidance in this update supersedes 350-40-25-16. Consequently, all software licenses within the scope of Subtopic 350-40 will be accounted for consistent with other licenses of intangible assets. The amendments are effective for public business entities for annual and interim periods within those annual periods, beginning after December 15, 2015. An entity can elect to adopt the amendments either (1) prospectively to all arrangements entered into or materially modified after the effective date or (2) retrospectively. For prospective transition, the only disclosure requirements at transition are the nature of and reason for the change in accounting principle, the transition method, and a qualitative description of the financial statement line items affected by the change. For retrospective transition, the disclosure requirements at transition include the requirements for prospective transition and quantitative information about the effects of the accounting change. The adoption of this guidance did not have a material effect on the Corporation's financial position or results of operations. FASB ASU 2015-2, Amendments to the Consolidation Analysis . The amendments in ASU 2015-02 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. These amendments modify the current accounting guidance to address limited partnerships and similar entities, certain investments funds, fees paid to a decision maker or service provider, and the impact of fee arrangements and related parties on the primary beneficiary determination. The amendments are effective for public business entities for fiscal years, and for interim periods within those fiscal years, beginning after December 15, 2015. Early adoption is permitted, including adoption in an interim period. If an entity early adopts the amendments in an interim period, any adjustments should be reflected as of the beginning of the fiscal year that includes that interim period. A reporting entity may apply the amendments using a modified retrospective approach by recording a cumulative-effect adjustment to equity as of the beginning of the fiscal year of adoption. A reporting entity also may apply the amendments retrospectively. The adoption of this guidance did not have a material effect on the Corporation's financial position or results of operations. FASB ASU 2014–12, Accounting for Share-Based Payments When the Terms of an Award Provide That a Performance Target Could Be Achieved After the Requisite Service Period — a consensus of the FASB Emerging Issues Task Force. The amendments in this update clarify that entities should treat performance targets that can be met after the requisite service period of a share-based payment award as performance conditions that affect vesting. Therefore, an entity would not record compensation expense (measured as of the grant date without taking into account the effect of the performance target) related to an award for which transfer to the employee is contingent on the entity’s satisfaction of a performance target until it becomes probable that the performance target will be met. The ASU does not contain any new disclosure requirements. The ASU is effective for interim and annual reporting periods beginning after December 15, 2015. Early adoption is permitted. In addition, entities will have the option of applying the guidance either prospectively (i.e., only to awards granted or modified on or after the effective date) or retrospectively. Retrospective application would only apply to awards with performance targets outstanding at or after the beginning of the first annual period presented (i.e., the earliest presented comparative period). The adoption of this guidance did not have a material effect on the Corporation's financial position or results of operations. Recently Issued Accounting Standards ASU 2016-13, Financial Instruments-Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments. The amendments in this update replace the incurred loss impairment methodology in current GAAP with a methodology that reflects expected credit losses and requires consideration of a broader range of reasonable and supportable information to inform credit loss estimates. The amendments will require a financial asset (or group of financial assets) measured at amortized cost basis to be presented at the net amount expected to be collected. The amendments will also limit the amount of the allowance for credit losses to the amount by which fair value is below amortized cost because the classification as available for sale is premised on an investment strategy that recognizes that the investment could be sold at fair value, if cash collection would result in the realization of an amount less than fair value. The amendments require changes to presentational matters, such as presenting credit losses as an allowance rather than a write-down. The amendments in ASU 2016-13 retain many of the disclosure amendments in Accounting Standards Update No. 2010-20, Receivables (Topic 310): Disclosures about the Credit Quality of Financing Receivables and the Allowance for Credit Losses, updated to reflect the change from an incurred loss methodology to an expected credit loss methodology. In addition, disclosures of credit quality indicators in relation to the amortized cost of financing receivables are further disaggregated by year of origination (or vintage). The amendments in this update are effective for fiscal years beginning after December 15, 2019, including interim periods within those fiscal years for public business entities. Early adoption is permitted as of the fiscal years beginning after December 15, 2018, including interim periods within those fiscal years using a cumulative-effect adjustment to retained earnings as of the beginning of the first reporting period in which the guidance is effective (i.e., a modified-retrospective approach) or a prospective transition approach for debt securities for which an other-than-temporary impairment had been recognized before the effective date. The Corporation is in process of assessing the potential impact the adoption of this guidance will have on its consolidated financial statements and related disclosures. ASU 2016-12, Revenue from Contracts with Customers (Topic 606): Narrow-Scope Improvements and Practical Expedients. This update amends the new revenue recognition guidance on assessing collectability, presentation of sales taxes, noncash consideration, and completed contracts and contract modifications at transition. The amendments in this update clarify that, for a contract to be considered completed at transition, substantially all of the revenue must have been recognized under legacy GAAP. This update also includes a practical expedient to ease transition for contracts that were modified prior to adoption of the revenue standard under both the full and modified retrospective transition approaches. The amendments clarify how an entity should evaluate the collectibility threshold and when an entity can recognize nonrefundable consideration received as revenue if an arrangement does not meet the standard’s contract criteria. They also clarify that the fair value of noncash consideration should be measured at contract inception when determining the transaction price. The amendments also allow an entity to make an accounting policy election to exclude from the transaction price certain types of taxes collected from a customer if it discloses that policy. The effective date and transition requirements for this update are the same as those of the new standard. The Corporation is in process of assessing the potential impact the adoption of this guidance will have on its consolidated financial statements and related disclosures. ASU 2016-11, Revenue Recognition (Topic 605) and Derivatives and Hedging (Topic 815): Rescission of SEC Guidance Because of Accounting Standards Updates 2014-09 and 2014-16 Pursuant to Staff Announcements at the March 3, 2006 EITF Meeting (SEC Update) . The amendments in this update rescinds the following SEC Staff Observer comments that relate to narrow revenue recognition issues from ASC 605, Revenue Recognition , and ASC 932, Extractive Activities — Oil and Ga s, upon an entity’s adoption of ASC 606: Revenue and Expense Recognition for Freight Services in Process, Accounting for Shipping and Handling Fees and Costs, Accounting for Consideration Given by a Vendor to a Customer (including a Reseller of the Vendor’s Products), and Accounting for Gas Balancing Arrangements . The ASU also rescinds the SEC Staff Announcement: Determining the Nature of a Host Contract Related to a Hybrid Instrument Issued in the Form of a Share under Topic 815 , issued as EITF Topic D-109 and codified in ASC 815-10-S99-3, as of the effective date of ASU 2014-16, Derivatives and Hedging (Topic 815): Determining Whether the Host Contract in a Hybrid Financial Instrument Issued in the Form of a Share is More Akin to Debt or to Equity . The effective date and transition requirements for this update are the same as those of the new standard. The Corporation is in process of assessing the potential impact the adoption of this guidance will have on its consolidated financial statements and related disclosures. ASU 2016-10, Revenue from Contracts with Customers (Topic 606): Identifying Performance Obligations and Licensing . This update amends the new revenue recognition guidance on accounting for licenses of intellectual property and identifying performance obligations. The amendments clarify how an entity should evaluate the nature of its promise in granting a license of intellectual property, which will determine whether it recognizes revenue over time or a point in time. The amendments also clarify when a promised good or service is separately identifiable, that is distinct within the context of the contract, and allow entities to disregard items that are immaterial in the context of a contract. The effective date and transition requirements for this update are the same as those of the new standard. For public business entities, the amendments in this update are effective for annual reporting periods beginning after December 15, 2017, with early adoption permitted, but not before December 15, 2016. The amendments can be adopted using either the full retrospective approach or a modified retrospective approach. The Corporation is in process of assessing the potential impact the adoption of this guidance will have on its consolidated financial statements and related disclosures. FASB ASU 2016-09, Compensation - Stock Compensation (Topic 718): Improvements to Employee Share-Based Payment Accounting . The amendments in ASU 2016-09 simplify several aspects of accounting for employee share-based payments including income tax consequences, classification of awards as either equity or liabilities, and classification on the statement of cash flows. Some areas of the simplification apply only to nonpublic entities. The new guidance will require all income tax effects of awards to be recognized as income tax expense or benefit in the income statement when the awards vest or are settled and additional paid in capital pools will be eliminated. The guidance requires companies to present excess tax benefits as an operating activity on the statement of cash flows rather than as a financing activity. Companies will be required to account for forfeitures of share-based payments by recognizing forfeitures of awards as they occur or estimating the number of awards expected to be forfeited and adjusting the estimate when it is likely to change, as currently required, through an accounting policy election. The guidance will increase the amount an employer can withhold to cover income taxes on awards and still qualify for the exception to liability classification for shares used to satisfy the employer's income tax withholding obligation. The guidance requires an employer to classify the cash paid to a tax authority when shares are withheld to satisfy its statutory income tax withholding obligation as a financing activity on the statement of cash flows. For public business entities, the amendments in this update are effective for fiscal years beginning after December 15, 2016, including interim periods within those fiscal years. Early adoption will be permitted in any interim or annual period for which financial statements have not yet been issued or have not been made available for issuance, however all of the guidance must be adopted in the same period. If early adoption is elected in an interim period, any adjustments should be reflected as of the beginning of the annual period that includes that interim period. The adoption of this guidance is not expected to have a material effect on the Corporation’s financial position or results of operations. FASB ASU 2016-08, Revenue from Contracts with Customers (Topic 606): Principal versus Agent Considerations (Reporting Revenue Gross versus Net). The amendments in ASU 2016-08 are intended to improve the operability and understandability of the implementation guidance by clarifying the following: how an entity should identify the unit of accounting for the principal versus agent evaluation; how the control principle applies to transactions, such as service arrangements; reframes the indicators to focus on a principal rather than an agent, removes the credit risk and commission indicators and clarifies the relationship between the control principle and the indicators; and revises the existing illustrative examples and adds new illustrative examples. For public business entities, the amendments in this update are effective for annual reporting periods beginning after December 15, 2017, with early adoption permitted, but not before December 15, 2016. The amendments can be adopted using either the full retrospective approach or a modified retrospective approach. The Corporation is in process of assessing the potential impact the adoption of this guidance will have on its consolidated financial statements and related disclosures. FASB ASU 2016-07, Investments—Equity Method and Joint Ventures (Topic 323) , The amendments in this update eliminate the requirement that when an investment qualifies for use of the equity method due to an increase in level of ownership or influence, an investor must adjust the investment, results of operations, and retained earnings retroactively on a step-by step basis as if the equity method had been in effect during all previous periods that the investment had been held. For public business entities, the amendments in this update are effective for financial statements issued for fiscal years beginning after December 15, 2016, and interim periods within those fiscal years. Early adoption is permitted. The amendments should be applied prospectively upon their effective date to increases in the level of ownership interest or degree of influence that result in the adoption of the equity method. The Corporation is in process of assessing the potential impact the adoption of this guidance will have on its consolidated financial statements and related disclosures FASB ASU 2016-06, Derivatives and Hedging (Topic 815), Contingent Put and Call Options in Debt Instruments . The amendments in this update clarify the requirements for assessing whether contingent call (put) options that can accelerate the payment of principal on debt instruments are clearly and closely related to their debt hosts. An entity performing the assessment under the amendments in this update is required to assess the embedded call (put) options solely in accordance with the four-step decision sequence. For public business entities, the amendments in this update are effective for financial statements issued for fiscal years beginning after December 15, 2016, and interim periods within those fiscal years. An entity should apply the amendments in this update on a modified retrospective basis to existing debt instruments as of the beginning of the fiscal year for which the amendments are effective. Early adoption is permitted, including adoption in an interim period. If an entity early adopts the amendments in an interim period, any adjustments should be reflected as of the beginning of the fiscal year that includes that interim period. The Corporation is in process of assessing the potential impact the adoption of this guidance will have on its consolidated financial statements and related disclosures. FASB ASU 2016-05, Derivatives and Hedging (Topic 815): Effect of Derivative Contract Novations on The amendments in ASU 2016-05 clarify that a change in the counterparty to a derivative instrument that has been designated as the hedging instrument under Topic 815 does not, in and of itself, require dedesignation of that hedging relationship provided that all other hedge accounting criteria (including those in paragraphs 815-20-35-14 through 35-18) continue to be met. For public business entities, the amendments in this update are effective for financial statements issued for fiscal years beginning after December 15, 2016, and interim periods within those fiscal years. Early adoption is permitted, including adoption in an interim period. The Corporation is in process of assessing the potential impact the adoption of this guidance will have on its consolidated financial statements and related disclosures. FASB ASU 2016-02, Leases (Topic 842), The amendments in ASU 2016-02 increase transparency and comparability by requiring a lessee to recognize assets and liabilities for operating and capital leases with lease terms of more than 12 months. Additional qualitative and quantitative requirements disclosures are required to provide additional information to better understand the amount, timing, and uncertainty of cash flows arising from leases. Lessor accounting will remain largely unchanged from current GAAP. For public business entities, the amendments in this update are effective for fiscal years beginning after December 15, 2018, including interim periods within those fiscal years. The Corporation is in process of assessing the potential impact the adoption of this guidance will have on its consolidated financial statements and related disclosures. FASB ASU 2016-01, Financial Instruments-Overall (Subtopic 825-10): Recognition and Measurement of Financial Assets and Financial Liabilities. The amendments in this update supersede the guidance to classify equity securities with readily determinable fair values into different categories (that is, trading or available-for-sale) and require equity securities (including other ownership interests, such as partnerships, unincorporated joint ventures, and limited liability companies) to be measured at fair value with changes in the fair value recognized through net income. The amendments allow equity investments that do not have readily determinable fair values to be remeasured at fair value either upon the occurrence of an observable price change or upon identification of an impairment. The amendments also require enhanced disclosures about those investments. The amendments improve financial reporting by providing relevant information about an entity’s equity investments and reducing the number of items that are recognized in other comprehensive income. For public business entities, the amendments in this update are effective for fiscal years beginning after December 15, 2017, including interim periods within those fiscal years. The amendments should be applied by means of a cumulative-effect adjustment to the balance sheet as of the beginning of the fiscal year of adoption. The adoption of this guidance is not expected to have a material effect on the Corporation’s financial position or results of operations. FASB ASU 2014-09, Revenue from Contracts with Customers . In May 2014, the FASB issued new accounting guidance that revises the criteria for determining when to recognize revenue from contracts with customers and expands disclosure requirements. The amendments in this update supersede virtually all existing GAAP revenue recognition guidance, including most industry-specific revenue recognition guidance. The core principle requires an entity to recognize revenue in a manner that depicts the transfer of goods or services to customers at an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods or services. ASU 2014-09 applies to contracts with customers to provide goods and services, with certain exclusions such as lease contracts, financing arrangements, and financial instruments. On July 9, 2015, the FASB decided to delay, by one year, the effective dates, permitting public entities to apply this guidance to annual reporting periods beginning after December 15, 2017, with early adoption permitted, but not before December 15, 2016. The amendments can be adopted using either the full retrospective approach or a modified retrospective approach. There are many aspects of this new accounting guidance that are still being interpreted, and the FASB has recently issued updates to certain aspects of the guidance as noted above. The Corporation is in process of assessing the potential impact the adoption of this guidance will have on its consolidated financial statements and related disclosures.
Investment policy on municipal securities	The Corporation's investment policy states that municipal securities purchased are to be investment grade and allows for a 20% maximum portfolio concentration in municipal securities with a combined individual state to total municipal outstanding equal to or less than 25% .

Investment Securities (Tables)

Investment Securities (Tables)	6 Months Ended
	Jun. 30, 2016
Investments, Debt and Equity Securities [Abstract]
Amortized cost and fair value for the major categories of held-to-maturity and available-for-sale securities	The following tables provide the amortized cost and fair value for the major categories of held-to-maturity and available-for-sale securities. Held-to-maturity securities are carried at amortized cost, which reflects historical cost, adjusted for amortization of premiums and accretion of discounts. Available-for-sale securities are carried at fair value with net unrealized gains or losses reported on an after tax basis as a component of OCI in shareholders' equity. June 30, 2016 (In thousands) Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Fair Value Securities available-for-sale Debt securities U.S. treasury notes & bonds $ 4,996 $ 1 $ — $ 4,997 U.S. government agency debentures 2,500 28 — 2,528 U.S. states and political subdivisions 147,807 3,742 (2 ) 151,547 Residential mortgage-backed securities: U.S. government agencies 840,250 20,064 (67 ) 860,247 Commercial mortgage-backed securities: U.S. government agencies 198,069 4,095 (116 ) 202,048 Residential collateralized mortgage-backed securities: U.S. government agencies 2,325,707 30,400 (3,089 ) 2,353,018 Non-agency 3 — — 3 Commercial collateralized mortgage-backed securities: U.S. government agencies 392,205 6,528 (122 ) 398,611 Asset-backed securities: Collateralized loan obligations 297,939 354 (6,499 ) 291,794 Corporate debt securities 61,740 — (10,633 ) 51,107 Total debt securities 4,271,216 65,212 (20,528 ) 4,315,900 Equity securities Marketable equity securities 2,788 — — 2,788 Total equity securities 2,788 — — 2,788 Total securities available-for-sale $ 4,274,004 $ 65,212 $ (20,528 ) $ 4,318,688 Securities held-to-maturity Debt securities U.S. government agency debentures $ 25,000 $ 35 $ — $ 25,035 U.S. states and political subdivisions 540,425 15,713 (265 ) 555,873 Residential mortgage-backed securities: U.S. government agencies 467,462 12,367 — 479,829 Commercial mortgage-backed securities: U.S. government agencies 87,964 1,991 (42 ) 89,913 Residential collateralized mortgage-backed securities: U.S. government agencies 1,060,496 4,327 (6,670 ) 1,058,153 Commercial collateralized mortgage-backed securities: U.S. government agencies 246,509 3,559 (410 ) 249,658 Corporate debt securities 86,305 974 — 87,279 Total securities held-to-maturity $ 2,514,161 $ 38,966 $ (7,387 ) $ 2,545,740 December 31, 2015 (In thousands) Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Fair Value Securities available-for-sale Debt securities U.S. treasury notes & bonds $ 5,001 $ — $ (1 ) $ 5,000 U.S. government agency debentures 2,500 — (2 ) 2,498 U.S. states and political subdivisions 188,829 4,170 (204 ) 192,795 Residential mortgage-backed securities: U.S. government agencies 900,358 11,325 (5,454 ) 906,229 Commercial mortgage-backed securities: U.S. government agencies 173,912 220 (2,023 ) 172,109 Residential collateralized mortgage-backed securities: U.S. government agencies 2,155,808 2,659 (30,147 ) 2,128,320 Non-agency 4 — — 4 Commercial collateralized mortgage-backed securities: U.S. government agencies 217,008 580 (1,269 ) 216,319 Asset-backed securities: Collateralized loan obligations 297,831 26 (8,446 ) 289,411 Corporate debt securities 61,710 — (9,481 ) 52,229 Total debt securities 4,002,961 18,980 (57,027 ) 3,964,914 Equity securities Marketable equity securities 2,821 — — 2,821 Total equity securities 2,821 — — 2,821 Total securities available-for-sale $ 4,005,782 $ 18,980 $ (57,027 ) $ 3,967,735 Securities held-to-maturity Debt securities U.S. government agency debentures 25,000 19 — 25,019 U.S. states and political subdivisions 571,738 22,180 (262 ) 593,656 Residential mortgage-backed securities: U.S. government agencies 507,908 4,767 (2,999 ) 509,676 Commercial mortgage-backed securities: U.S. government agencies 64,951 294 (574 ) 64,671 Residential collateralized mortgage-backed securities: U.S. government agencies 1,161,340 75 (35,881 ) 1,125,534 Commercial collateralized mortgage-backed securities: U.S. government agencies 255,359 676 (3,611 ) 252,424 Corporate debt securities 87,797 364 (22 ) 88,139 Total securities held-to-maturity $ 2,674,093 $ 28,375 $ (43,349 ) $ 2,659,119 June 30, 2015 (In thousands) Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Fair Value Securities available-for-sale Debt securities U.S. treasury notes & bonds $ 5,004 $ 1 $ — $ 5,005 U.S. government agency debentures 2,500 10 — 2,510 U.S. states and political subdivisions 203,449 5,191 (1,023 ) 207,617 Residential mortgage-backed securities: U.S. government agencies 947,347 18,068 (4,563 ) 960,852 Commercial mortgage-backed securities: U.S. government agencies 171,842 643 (2,147 ) 170,338 Residential collateralized mortgage-backed securities: U.S. government agencies 1,968,918 4,779 (24,308 ) 1,949,389 Non-agency 5 — — 5 Commercial collateralized mortgage-backed securities: U.S. government agencies 227,889 1,254 (705 ) 228,438 Asset-backed securities: Collateralized loan obligations 259,743 801 (2,463 ) 258,081 Corporate debt securities 61,681 — (8,231 ) 53,450 Total debt securities 3,848,378 30,747 (43,440 ) 3,835,685 Equity Securities Marketable equity securities 2,824 — — 2,824 Non-marketable equity securities — — — — Total equity securities 2,824 — — 2,824 Total securities available-for-sale $ 3,851,202 $ 30,747 $ (43,440 ) $ 3,838,509 Securities held-to-maturity Debt securities U.S. government agency debentures 25,000 — (323 ) 24,677 U.S states and political subdivisions 529,441 8,104 (1,942 ) 535,603 Residential mortgage-backed securities: U.S. government agencies 555,273 6,919 (2,940 ) 559,252 Commercial mortgage-backed securities: U.S. government agencies 57,462 412 (219 ) 57,655 Residential collateralized mortgage-backed securities: U.S. government agencies 1,267,321 445 (35,025 ) 1,232,741 Commercial collateralized mortgage-backed securities: U.S. government agencies 263,741 1,004 (4,523 ) 260,222 Corporate debt securities 89,275 695 — 89,970 Total securities held-to-maturity $ 2,787,513 $ 17,579 $ (44,972 ) $ 2,760,120
Schedule of general obligation bonds	The Corporation's U.S. states and political subdivisions portfolio is composed of general obligation bonds issued by a highly diversified number of states, cities, counties, and school districts. The amortized cost and fair value of the Corporation's portfolio of general obligation bonds are summarized by U.S. state in the tables below. As illustrated in the tables below, the aggregate fair value of the Corporation's general obligation bonds was greater than $10.0 million in 11 of the 37 U.S. states in which it holds investments. (Dollars in thousands) June 30, 2016 U.S. State # of Issuers Average Issue Size, Fair Value Amortized Cost Fair Value Michigan 116 $ 1,404 $ 157,403 $ 162,897 Ohio 108 1,095 115,545 118,300 Wisconsin 54 651 34,046 35,166 Illinois 52 1,783 90,772 92,711 Texas 51 816 40,409 41,629 Pennsylvania 41 1,037 41,674 42,529 New Jersey 31 724 21,928 22,441 Washington 27 968 25,586 26,149 Minnesota 23 699 15,667 16,076 New York 18 575 10,044 10,346 Missouri 10 1,075 10,414 10,754 Other 105 768 79,275 80,688 Total general obligation bonds 636 $ 1,037 $ 642,763 $ 659,686 (Dollars in thousands) December 31, 2015 U.S. State # of Issuers Average Issue Size, Fair Value Amortized Cost Fair Value Michigan 137 $ 1,381 $ 180,508 $ 189,259 Ohio 111 1,091 116,783 121,117 Illinois 55 1,870 99,524 102,867 Texas 58 807 45,818 46,805 Wisconsin 69 673 44,794 46,454 Pennsylvania 42 1,020 42,185 42,835 Washington 29 950 27,080 27,548 New Jersey 35 725 24,810 25,372 Minnesota 33 667 21,679 22,020 Missouri 15 1,078 15,878 16,174 New York 18 635 11,161 11,422 Other 110 759 81,815 83,477 Total general obligation bonds 712 $ 1,033 $ 712,035 $ 735,350 (Dollars in thousands) June 30, 2015 U.S. State # of Issuers Average Issue Size, Fair Value Amortized Cost Fair Value Michigan 153 $ 1,018 $ 152,499 $ 155,712 Ohio 127 964 121,716 122,474 Illinois 60 1,784 105,581 107,033 Wisconsin 70 585 39,774 40,950 Texas 67 759 50,370 50,877 Pennsylvania 46 1,014 46,547 46,666 Washington 30 939 27,783 28,169 New Jersey 34 720 23,916 24,472 Minnesota 34 692 23,267 23,540 Missouri 15 1,084 15,981 16,265 New York 18 633 11,187 11,392 Other 119 639 75,670 76,040 Total general obligation bonds 773 $ 910 $ 694,291 $ 703,590
Other investments	FRB and FHLB stock constitutes the majority of other investments on the Consolidated Balance Sheets. (In thousands) June 30, 2016 December 31, 2015 June 30, 2015 FRB stock $ 56,303 $ 56,083 $ 55,853 FHLB stock 91,714 91,714 91,713 Other 350 375 401 Total other investments $ 148,367 $ 148,172 $ 147,967
Realized Gains and Losses	Three Months Ended June 30, Six Months Ended June 30, (In thousands) 2016 2015 2016 2015 Realized gains $ 2,164 $ 672 $ 2,459 $ 1,064 Realized losses — (105 ) — (143 ) Net securities (losses)/gains $ 2,164 $ 567 $ 2,459 $ 921
Gross unrealized losses and fair value of securities	The following table presents the gross unrealized losses and fair value of securities by length of time that individual securities had been in a continuous loss position by major categories of available-for-sale and held-to-maturity securities. June 30, 2016 Less than 12 months 12 months or longer Total (Dollars in thousands) Fair Value Unrealized Losses Number Impaired Securities Fair Value Unrealized Losses Number Securities Fair Value Unrealized Losses Securities available-for-sale Debt securities U.S. states and political subdivisions $ 1,567 $ (2 ) 3 $ — $ — — $ 1,567 $ (2 ) Residential mortgage-backed securities: U.S. government agencies 14,275 (67 ) 5 — — 0 14,275 (67 ) Commercial mortgage-backed securities: U.S. government agencies 23,570 (28 ) 1 12,627 (88 ) 1 36,197 (116 ) Residential collateralized mortgage-backed securities: U.S. government agencies 13,182 (271 ) 1 332,305 (2,818 ) 29 345,487 (3,089 ) Commercial collateralized mortgage-backed securities: U.S. government agencies 24,401 (38 ) 4 19,071 (84 ) 1 43,472 (122 ) Asset-backed securities: Collateralized loan obligations 92,851 (1,795 ) 16 161,827 (4,704 ) 21 254,678 (6,499 ) Corporate debt securities 51,106 (10,633 ) 8 51,106 (10,633 ) Total securities available-for-sale $ 169,846 $ (2,201 ) 30 $ 576,936 $ (18,327 ) 60 $ 746,782 $ (20,528 ) Securities held-to-maturity Debt securities U.S. states and political subdivisions $ 3,525 $ (19 ) $ 7 $ 6,569 $ (246 ) $ 9 $ 10,094 $ (265 ) Residential mortgage-backed securities: U.S. government agencies — — 0 — — 0 — — Commercial mortgage-backed securities: U.S. government agencies 13,478 (42 ) 1 — — 0 13,478 (42 ) Residential collateralized mortgage-backed securities: U.S. government agencies — — 0 598,383 (6,670 ) 37 598,383 (6,670 ) Commercial collateralized mortgage-backed securities: U.S. government agencies — — 0 47,686 (410 ) 4 47,686 (410 ) Collateralized loan obligations: Corporate debt securities 5,002 — 1 — — 0 5,002 — Total securities held-to-maturity $ 22,005 $ (61 ) 9 $ 652,638 $ (7,326 ) 50 $ 674,643 $ (7,387 ) December 31, 2015 Less than 12 months 12 months or longer Total (Dollars in thousands) Fair Value Unrealized Losses Number Securities Fair Value Unrealized Losses Number Impaired Securities Fair Value Unrealized Losses Securities available-for-sale Debt securities U.S government agency debentures $ 2,498 $ (2 ) 1 $ — $ — 0 $ 2,498 $ (2 ) U.S. treasury notes and bonds 5,000 (1 ) 1 — — 0 5,000 (1 ) U.S. states and political subdivisions 10,178 (37 ) 20 5,899 (167 ) 9 16,077 (204 ) Residential mortgage-backed securities: U.S. government agencies 328,156 (3,026 ) 27 95,895 (2,428 ) 7 424,051 (5,454 ) Commercial mortgage-backed securities: U.S. government agencies 107,074 (1,447 ) 15 12,401 (576 ) 1 119,475 (2,023 ) Residential collateralized mortgage-backed securities: U.S. government agencies 1,130,779 (10,587 ) 78 597,403 (19,560 ) 49 1,728,182 (30,147 ) Commercial collateralized mortgage-backed securities: U.S. government agencies 113,825 (893 ) 12 23,400 (376 ) 2 137,225 (1,269 ) Asset-backed securities: Collateralized loan obligations 151,810 (3,576 ) 26 126,422 (4,870 ) 15 278,232 (8,446 ) Corporate debt securities — — 0 52,229 (9,481 ) 8 52,229 (9,481 ) Total securities available-for-sale $ 1,849,320 $ (19,569 ) 180 $ 913,649 $ (37,458 ) 91 $ 2,762,969 $ (57,027 ) Securities held-to-maturity Debt securities U.S. states and political subdivisions $ 18,465 $ (224 ) 21 $ 4,174 $ (38 ) 6 $ 22,639 $ (262 ) Residential mortgage-backed securities: U.S. government agencies 85,738 (715 ) 6 97,880 (2,284 ) 6 183,618 (2,999 ) Commercial mortgage-backed securities: U.S. government agencies 34,833 (346 ) 6 9,269 (228 ) 1 44,102 (574 ) Residential collateralized mortgage-backed securities: U.S. government agencies 140,514 (1,225 ) 12 941,982 (34,656 ) 55 1,082,496 (35,881 ) Commercial collateralized mortgage-backed securities: U.S. government agencies 71,812 (384 ) 7 117,992 (3,227 ) 11 189,804 (3,611 ) Corporate debt securities 19,243 (22 ) 6 — — 0 19,243 (22 ) Total securities held-to-maturity $ 370,605 $ (2,916 ) 58 $ 1,171,297 $ (40,433 ) 79 $ 1,541,902 $ (43,349 ) June 30, 2015 Less than 12 months 12 months or longer Total (Dollars in thousands) Fair Value Unrealized Losses Number Securities Fair Value Unrealized Losses Number Securities Fair Value Unrealized Losses Securities available-for-sale Debt securities U.S. states and political subdivisions $ 32,237 $ (587 ) 52 $ 5,642 $ (436 ) 9 $ 37,879 $ (1,023 ) Residential mortgage-backed securities: U.S. government agencies 196,219 (2,087 ) 15 103,498 (2,476 ) 8 299,717 (4,563 ) Commercial mortgage-backed securities: U.S. government agencies 96,573 (1,457 ) 14 17,335 (690 ) 2 113,908 (2,147 ) Residential collateralized mortgage-backed securities: U.S. government agencies 596,646 (4,398 ) 42 706,376 (19,910 ) 53 1,303,022 (24,308 ) Commercial collateralized mortgage-backed securities: U.S. government agencies 46,771 (71 ) 5 61,120 (634 ) 7 107,891 (705 ) Asset-backed securities: Collateralized loan obligations 84,565 (1,204 ) 10 86,082 (1,259 ) 11 170,647 (2,463 ) Corporate debt securities 4,225 (765 ) 1 49,225 (7,466 ) 7 53,450 (8,231 ) Total securities available-for-sale $ 1,057,236 $ (10,569 ) 139 $ 1,029,278 $ (32,871 ) 97 $ 2,086,514 $ (43,440 ) Securities held-to-maturity Debt securities U.S. government agency debentures — — 0 24,677 (323 ) 1 24,677 (323 ) U.S. states and political subdivisions 98,867 (1,872 ) 112 4,430 (70 ) 6 103,297 (1,942 ) Residential mortgage-backed securities: U.S. government agencies 83,112 (483 ) 5 105,289 (2,457 ) 6 188,401 (2,940 ) Commercial mortgage-backed securities: U.S. government agencies 7,263 (41 ) 1 9,430 (178 ) 1 16,693 (219 ) Residential collateralized mortgage-backed securities: U.S. government agencies 111,360 (835 ) 8 1,042,351 (34,190 ) 56 1,153,711 (35,025 ) Commercial collateralized mortgage-backed securities: U.S. government agencies 5,025 (2 ) 1 142,937 (4,521 ) 13 147,962 (4,523 ) Total securities held-to-maturity $ 305,627 $ (3,233 ) 127 $ 1,329,114 $ (41,739 ) 83 $ 1,634,741 $ (44,972 )
Investments Classified by Contractual Maturity Date	(Dollars in thousands) U.S. Treasury notes & bonds U.S. Government agency debentures U.S. States and political subdivisions Residential mortgage-backed securities - U.S. govt. agencies Commercial mortgage-backed securities - U.S. govt. agencies Residential collateralized mortgage obligations - U.S. govt. agencies Residential collateralized mortgage obligations - non-agency Commercial collateralized mortgage obligations - U.S. govt. agencies Asset backed securities - collateralized loan obligations Corporate debt securities Total Weighted Average Yield Securities Available-for-Sale Remaining maturity: One year or less $ 4,997 $ — $ 5,895 $ 65 $ — $ — $ — $ — $ — $ — $ 10,957 2.32 % Over one year through five years — 2,528 75,103 86,480 24,498 13,936 3 22,126 — — 224,674 3.54 % Over five years through ten years — — 51,441 47,116 123,441 10,705 — 103,837 218,344 — 554,884 2.92 % Over ten years — — 19,108 726,586 54,109 2,328,377 — 272,648 73,450 51,107 3,525,385 2.23 % Fair Value $ 4,997 $ 2,528 $ 151,547 $ 860,247 $ 202,048 $ 2,353,018 $ 3 $ 398,611 $ 291,794 $ 51,107 $ 4,315,900 2.39 % Amortized Cost $ 4,996 $ 2,500 $ 147,807 $ 840,250 $ 198,069 $ 2,325,707 $ 3 $ 392,205 $ 297,939 $ 61,740 $ 4,271,216 Weighted-Average Yield 0.31 % 1.25 % 5.00 % 2.98 % 2.13 % 2.01 % 2.98 % 2.18 % 3.08 % 1.37 % 2.39 % Weighted-Average Maturity (in years) 0.23 1.92 1.86 3.28 3.60 3.11 0.59 3.90 6.51 11.31 3.55 Securities Held-to-Maturity Remaining maturity: One year or less $ — $ — $ 64,872 $ — $ — $ — $ — $ — $ — $ 22,443 $ 87,315 2.36 % Over one year through five years — 25,035 157,172 — 36,522 — — 81,237 — 64,836 364,802 2.47 % Over five years through ten years — — 193,355 21,307 53,391 — — 40,365 — — 308,418 3.83 % Over ten years — — 140,474 458,522 — 1,058,153 — 128,056 — — 1,785,205 2.02 % Fair Value $ — $ 25,035 $ 555,873 $ 479,829 $ 89,913 $ 1,058,153 $ — $ 249,658 $ — $ 87,279 $ 2,545,740 2.31 % Amortized Cost $ — $ 25,000 $ 540,425 $ 467,462 $ 87,964 $ 1,060,496 $ — $ 246,509 $ — $ 86,305 $ 2,514,161 Weighted-Average Yield — % 1.43 % 4.21 % 2.13 % 2.14 % 1.59 % — % 1.77 % — % 2.30 % 2.31 % Weighted-Average Maturity (in years) — 0.08 4.50 3.29 2.81 3.25 — 3.56 — 1.52 3.45

Loans (Tables)

Loans (Tables)	6 Months Ended
	Jun. 30, 2016
Loans and Leases Receivable Disclosure [Abstract]
Schedule of Accounts, Notes, Loans and Financing Receivable	Loans outstanding as of June 30, 2016 , December 31, 2015 , and June 30, 2015 , net of unearned income, consisted of the following: (In thousands) June 30, 2016 December 31, 2015 June 30, 2015 Originated loans: Commercial $ 9,132,366 $ 9,007,830 $ 8,633,332 Residential mortgage 728,534 689,045 653,143 Installment 3,353,084 2,990,349 2,720,059 Home equity 1,276,661 1,248,438 1,180,802 Credit cards 174,986 182,843 168,576 Total originated loans 14,665,631 14,118,505 13,355,912 Allowance for originated loan losses (105,175 ) (105,135 ) (101,682 ) Net originated loans $ 14,560,456 $ 14,013,370 $ 13,254,230 Acquired loans: Commercial $ 554,414 $ 677,149 $ 877,598 Residential mortgage 292,877 324,008 358,559 Installment 494,429 573,372 659,348 Home equity 146,916 168,542 200,179 Total acquired loans 1,488,636 1,743,071 2,095,684 Allowance for acquired loan losses (4,256 ) (3,877 ) (4,950 ) Net acquired loans $ 1,484,380 $ 1,739,194 $ 2,090,734 FDIC acquired loans: Commercial $ 115,793 $ 129,109 $ 145,821 Residential mortgage 33,370 35,568 38,029 Installment 1,808 2,077 2,299 Home equity 29,813 38,668 55,545 Loss share receivable 8,555 9,947 11,820 Total FDIC acquired loans 189,339 215,369 253,514 Allowance for FDIC acquired loan losses (40,218 ) (44,679 ) (41,627 ) Net FDIC acquired loans $ 149,121 $ 170,690 $ 211,887 Total loans: Commercial $ 9,802,573 $ 9,814,088 $ 9,656,751 Residential mortgage 1,054,781 1,048,621 1,049,731 Installment 3,849,321 3,565,798 3,381,706 Home equity 1,453,390 1,455,648 1,436,526 Credit cards 174,986 182,843 168,576 Loss share receivable 8,555 9,947 11,820 Total loans 16,343,606 16,076,945 15,705,110 Total allowance for loan losses (149,649 ) (153,691 ) (148,259 ) Total Net loans $ 16,193,957 $ 15,923,254 $ 15,556,851
Changes in Carrying Amount of Accretable Yield for Acquired Impaired Loans	Total outstanding acquired impaired loans as of June 30, 2016 and 2015 were $340.9 million and $504.7 million , respectively. The outstanding balance of these loans is the undiscounted sum of all amounts, including amounts deemed principal, interest, fees, penalties, and other under the loans, owed at the reporting date, whether or not currently due and whether or not any such amounts have been charged-off. Changes in the carrying amount and accretable yield for acquired impaired loans were as follows for the three and six months ended June 30, 2016 and 2015 : Three Months Ended June 30, Six Months Ended June 30, Acquired Impaired Loans 2016 2015 2016 2015 (In thousands) Accretable Yield Carrying Amount of Loans Accretable Yield Carrying Amount of Loans Accretable Yield Carrying Amount of Loans Accretable Yield Carrying Amount of Loans Balance at beginning of period $ 85,444 $ 257,152 $ 118,756 $ 388,313 $ 89,823 $ 284,709 $ 119,450 $ 423,209 Accretion (7,921 ) 7,921 (10,285 ) 10,285 (16,823 ) 16,823 (21,503 ) 21,503 Net reclassifications from nonaccretable to accretable 4,883 — 8,217 — 12,636 — 21,212 — Payments received, net — (25,878 ) — (42,434 ) — (62,337 ) — (88,548 ) Disposals (3,042 ) — (4,657 ) — (6,272 ) — (7,128 ) — Balance at end of period $ 79,364 $ 239,195 $ 112,031 $ 356,164 $ 79,364 $ 239,195 $ 112,031 $ 356,164
Changes in Loss Share Receivable Associated with Covered Loans	Changes in the loss share receivable for the three and six months ended June 30, 2016 and 2015 were as follows: Loss Share Receivable Three Months Ended June 30, Six Months Ended June 30, (In thousands) 2016 2015 2016 2015 Balance at beginning of period $ 9,436 $ 20,005 $ 9,947 $ 22,033 Amortization (358 ) (1,185 ) (706 ) (3,372 ) Increase/(decrease) due to impairment (recapture) on FDIC acquired loans (12 ) 1,819 257 6,046 FDIC reimbursement (194 ) (8,713 ) (386 ) (12,726 ) FDIC acquired loans paid in full (317 ) (106 ) (557 ) (161 ) Balance at end of the period (1) $ 8,555 $ 11,820 $ 8,555 $ 11,820 (1) As of June 30, 2016 , the loss share receivable of $8.6 million was related to single family covered loans.
Changes in Carrying Amount of Accretable Yield for Covered Impaired Loans	Total outstanding FDIC acquired impaired loans were $301.2 million and $351.1 million as of June 30, 2016 and 2015 , respectively. The outstanding balance of these loans is the undiscounted sum of all amounts, including amounts deemed principal, interest, fees, penalties, and other under the loans, owed at the reporting date, whether or not currently due and whether or not any such amounts have been charged-off. Changes in the carrying amount and accretable yield for FDIC acquired impaired loans were as follows for the three and six months ended June 30, 2016 and 2015 : Three Months Ended June 30, Six Months Ended June 30, FDIC Acquired Impaired Loans 2016 2015 2016 2015 (In thousands) Accretable Yield Carrying Loans Accretable Yield Carrying Loans Accretable Yield Carrying Loans Accretable Yield Carrying Loans Balance at beginning of period $ 22,126 $ 122,134 $ 29,867 $ 199,225 $ 22,908 $ 130,648 $ 37,511 $ 232,452 Accretion (2,231 ) 2,231 (4,100 ) 4,100 (4,528 ) 4,528 (9,667 ) 9,667 Net reclassifications between non-accretable and accretable 699 — 2,136 — 2,372 — 2,080 — Payments received, net — (5,604 ) — (45,517 ) — (16,415 ) — (84,311 ) (Disposals)/Additions (371 ) — (1,753 ) — (529 ) — (3,774 ) — Balance at end of period $ 20,223 $ 118,761 $ 26,150 $ 157,808 $ 20,223 $ 118,761 $ 26,150 $ 157,808 The cash flows expected to be collected on FDIC acquired impaired loans are estimated quarterly in a similar manner as described above for acquired impaired loans. During the quarter ended June 30, 2016 , the re-estimation process resulted in a net reclassification of $0.7 million from the nonaccretable difference to accretable yield. This reclassification was $2.1 million for the three months ended June 30, 2015 . The reclassification from the nonaccretable difference to the accretable yield results in prospective yield adjustments on the loan pools.
Past Due Financing Receivables	The following tables provide a summary of loans by portfolio type, including the delinquency status of those loans that continue to accrue interest and those loans that are nonaccrual: As of June 30, 2016 (In thousands) ≥ 90 Days Originated Loans Days Past Due Total Total Past Due and Nonaccrual 30-59 60-89 ≥ 90 Past Due Current Loans Accruing (1) Loans Commercial C&I $ 1,677 $ 1,465 $ 10,864 $ 14,006 $ 5,868,988 $ 5,882,994 $ 1,062 $ 43,887 CRE 4,506 142 12,176 16,824 2,018,674 2,035,498 166 13,860 Construction — 709 4,760 5,469 699,871 705,340 — 9,195 Leases — — 476 476 508,058 508,534 476 — Consumer Installment 15,662 3,496 4,005 23,163 3,329,921 3,353,084 3,453 3,506 Home Equity Lines 1,245 713 2,140 4,098 1,272,563 1,276,661 623 2,390 Credit Cards 811 504 860 2,175 172,811 174,986 789 758 Residential Mortgages 9,564 2,017 4,233 15,814 712,720 728,534 1,439 10,701 Total $ 33,465 $ 9,046 $ 39,514 $ 82,025 $ 14,583,606 $ 14,665,631 $ 8,008 $ 84,297 Acquired Loans ≥ 90 Days Days Past Due Total Total Past Due and Nonaccrual 30-59 60-89 ≥ 90 Past Due Current Loans Accruing (3) Loans (3) Commercial C&I $ 340 $ 121 $ 1,168 $ 1,629 $ 179,874 $ 181,503 $ — $ 865 CRE 602 896 9,491 10,989 357,811 368,800 — 4,482 Construction — — 413 413 3,698 4,111 — — Consumer Installment 3,623 767 486 4,876 489,553 494,429 224 615 Home Equity Lines 960 503 712 2,175 144,741 146,916 587 235 Residential Mortgages 299 943 3,867 5,109 287,768 292,877 646 924 Total $ 5,824 $ 3,230 $ 16,137 $ 25,191 $ 1,463,445 $ 1,488,636 $ 1,457 $ 7,121 FDIC Acquired Loans (2) ≥ 90 Days Days Past Due Total Total Past Due and Nonaccrual 30-59 60-89 ≥ 90 Past Due Current Loans Accruing (3) Loans (3) Commercial C&I $ — $ — $ 1,326 $ 1,326 $ 29,948 $ 31,274 n/a n/a CRE — 804 24,931 25,735 54,153 79,888 n/a n/a Construction — — 3,512 3,512 1,119 4,631 n/a n/a Consumer Installment — — — — 1,808 1,808 n/a n/a Home Equity Lines 2,097 354 938 3,389 26,424 29,813 n/a n/a Residential Mortgages 4,371 204 1,800 6,375 26,995 33,370 n/a n/a Total $ 6,468 $ 1,362 $ 32,507 $ 40,337 $ 140,447 $ 180,784 n/a n/a (1) Installment loans 90 days or more past due and accruing include $2.3 million of loans guaranteed by the U.S. government as of June 30, 2016 . (2) Excludes loss share receivable of $8.6 million as of June 30, 2016 . (3) Acquired and FDIC acquired impaired loans were not classified as nonperforming assets at June 30, 2016 as the loans are considered to be performing under ASC 310-30. As a result, interest income, through the accretion of the difference between the carrying amount of the loans and the expected cash flows, is being recognized on all acquired and FDIC acquired impaired loans. These asset quality disclosures are, therefore, not applicable to acquired and FDIC acquired impaired loans. As of December 31, 2015 (In thousands) ≥ 90 Days Originated Loans Days Past Due Total Total Past Due and Nonaccrual 30-59 60-89 ≥ 90 Past Due Current Loans Accruing (1) Loans Commercial C&I $ 4,684 $ 115 $ 8,824 $ 13,623 $ 5,779,785 $ 5,793,408 $ 236 $ 23,123 CRE 12,880 — 2,260 15,140 2,062,204 2,077,344 153 4,503 Construction 1,360 — 486 1,846 643,491 645,337 — 482 Leases — — — — 491,741 491,741 — — Consumer Installment 17,934 4,828 3,920 26,682 2,963,667 2,990,349 3,519 2,178 Home Equity Lines 1,952 913 1,478 4,343 1,244,095 1,248,438 513 1,674 Credit Cards 1,449 494 632 2,575 180,268 182,843 725 545 Residential Mortgages 11,099 1,519 6,693 19,311 669,734 689,045 2,876 11,600 Total $ 51,358 $ 7,869 $ 24,293 $ 83,520 $ 14,034,985 $ 14,118,505 $ 8,022 $ 44,105 Acquired Loans ≥ 90 Days Days Past Due Total Total Past Due and Nonaccrual 30-59 60-89 ≥ 90 Past Due Current Loans Accruing (3) Loans (3) Commercial C&I $ 311 $ 31 $ 3,336 $ 3,678 $ 236,467 $ 240,145 $ 13 $ 782 CRE 3,192 1,681 9,657 14,530 416,361 430,891 522 4,948 Construction — — 733 733 5,380 6,113 — — Consumer Installment 5,059 1,329 974 7,362 566,010 573,372 236 835 Home Equity Lines 1,365 660 1,260 3,285 165,257 168,542 644 514 Residential Mortgages 8,760 567 6,792 16,119 307,889 324,008 1,681 1,166 Total $ 18,687 $ 4,268 $ 22,752 $ 45,707 $ 1,697,364 $ 1,743,071 $ 3,096 $ 8,245 FDIC Acquired Loans (2) ≥ 90 Days Days Past Due Total Total Past Due and Nonaccrual 30-59 60-89 ≥ 90 Past Due Current Loans Accruing (3) Loans (3) Commercial C&I $ — $ — $ 1,054 $ 1,054 $ 34,412 $ 35,466 n/a n/a CRE 296 354 28,501 29,151 58,623 87,774 n/a n/a Construction — — 3,761 3,761 2,108 5,869 n/a n/a Consumer Installment — — — — 2,077 2,077 n/a n/a Home Equity Lines 2,230 52 1,917 4,199 34,469 38,668 n/a n/a Residential Mortgages 4,616 172 2,655 7,443 28,125 35,568 n/a n/a Total $ 7,142 $ 578 $ 37,888 $ 45,608 $ 159,814 $ 205,422 n/a n/a (1) Installment loans 90 days or more past due and accruing include $2.3 million of loans guaranteed by the U.S. government as of December 31, 2015 . (2) Excludes loss share receivable of $9.9 million as of December 31, 2015 . (3) Acquired and FDIC acquired impaired loans were not classified as nonperforming assets at December 31, 2015 as the loans are considered to be performing under ASC 310-30. As a result, interest income, through the accretion of the difference between the carrying amount of the loans and the expected cash flows, is being recognized on all acquired and FDIC acquired impaired loans. These asset quality disclosures are, therefore, not applicable to acquired and FDIC acquired impaired loans. As of June 30, 2015 (In thousands) ≥ 90 Days Originated Loans Days Past Due Total Total Past Due and Nonaccrual 30-59 60-89 ≥ 90 Past Due Current Loans Accruing (1) Loans Commercial C&I $ 5,837 $ 1,949 $ 3,780 $ 11,566 $ 5,459,797 $ 5,471,363 $ — $ 29,241 CRE 3,758 119 2,780 6,657 2,131,715 2,138,372 418 7,486 Construction 483 — — 483 586,412 586,895 — — Leases 17,862 — — 17,862 418,840 436,702 — 1,162 Consumer Installment 11,526 3,010 4,191 18,727 2,701,332 2,720,059 3,386 2,903 Home Equity Lines 2,268 720 1,032 4,020 1,176,782 1,180,802 249 1,591 Credit Cards 679 338 558 1,575 167,001 168,576 337 459 Residential Mortgages 9,792 1,935 7,595 19,322 633,821 653,143 3,619 12,300 Total $ 52,205 $ 8,071 $ 19,936 $ 80,212 $ 13,275,700 $ 13,355,912 $ 8,009 $ 55,142 Acquired Loans ≥ 90 Days Days Past Due Total Total Past Due and Nonaccrual 30-59 60-89 ≥ 90 Past Due Current Loans Accruing (3) Loans (3) Commercial C&I $ 33 $ 99 $ 3,279 $ 3,411 $ 334,012 $ 337,423 $ — $ 661 CRE 3,353 3,115 17,473 23,941 510,004 533,945 — 5,545 Construction — — 694 694 5,536 6,230 — — Consumer Installment 3,999 1,029 1,083 6,111 653,237 659,348 475 671 Home Equity Lines 2,349 785 1,353 4,487 195,692 200,179 762 246 Residential Mortgages 186 1,173 4,902 6,261 352,298 358,559 411 929 Total $ 9,920 $ 6,201 $ 28,784 $ 44,905 $ 2,050,779 $ 2,095,684 $ 1,648 $ 8,052 FDIC Acquired Loans (2) ≥ 90 Days Days Past Due Total Total Past Due and Nonaccrual 30-59 60-89 ≥ 90 Past Due Current Loans Accruing (3) Loans (3) Commercial C&I $ — $ — $ 2,916 $ 2,916 $ 35,221 $ 38,137 n/a n/a CRE 664 1,959 32,076 34,699 67,110 101,809 n/a n/a Construction — — 3,701 3,701 2,174 5,875 n/a n/a Consumer Installment — — — — 2,299 2,299 n/a n/a Home Equity Lines 1,256 246 3,454 4,956 50,589 55,545 n/a n/a Residential Mortgages 5,391 319 2,961 8,671 29,358 38,029 n/a n/a Total $ 7,311 $ 2,524 $ 45,108 $ 54,943 $ 186,751 $ 241,694 n/a n/a (1) Installment loans 90 days or more past due and accruing include $2.7 million of loans guaranteed by the U.S. government as of June 30, 2015 . (2) Excludes loss share receivable of $11.8 million as of June 30, 2015 . (3) Acquired and FDIC acquired impaired loans were not classified as nonperforming assets at June 30, 2015 as the loans are considered to be performing under ASC 310-30. As a result interest income, through the accretion of the difference between the carrying amount of the loans and the expected cash flows, is being recognized on all acquired and FDIC acquired impaired loans. These asset quality disclosures are, therefore, not applicable to acquired and FDIC acquired impaired loans
Financing Receivable Credit Quality Indicators	The following tables provide a summary of commercial loans by portfolio type and the Corporation's internal credit quality rating: As of June 30, 2016 (In thousands) Originated Loans Commercial C&I CRE Construction Leases Total Grade 1 $ 75,818 $ 742 $ — $ 12,001 $ 88,561 Grade 2 416,677 806 — 49,953 467,436 Grade 3 1,267,423 294,396 46,114 87,346 1,695,279 Grade 4 3,886,039 1,697,194 609,659 325,346 6,518,238 Grade 5 73,989 13,929 31,744 22,830 142,492 Grade 6 154,707 28,431 17,823 11,058 212,019 Grade 7 8,341 — — — 8,341 Total $ 5,882,994 $ 2,035,498 $ 705,340 $ 508,534 $ 9,132,366 Acquired Loans Commercial C&I CRE Construction Leases Total Grade 1 $ — $ — $ — $ — $ — Grade 2 — — — — — Grade 3 5,994 24,244 — — 30,238 Grade 4 140,944 303,228 3,698 — 447,870 Grade 5 27,053 11,607 — — 38,660 Grade 6 7,512 29,721 413 — 37,646 Grade 7 — — — — — Total $ 181,503 $ 368,800 $ 4,111 $ — $ 554,414 FDIC Acquired Loans Commercial C&I CRE Construction Leases Total Grade 1 $ — $ — $ — $ — $ — Grade 2 — — — — — Grade 3 — 7,040 — — 7,040 Grade 4 27,834 45,520 — — 73,354 Grade 5 — — — — — Grade 6 3,440 27,328 4,631 — 35,399 Grade 7 — — — — — Total $ 31,274 $ 79,888 $ 4,631 $ — $ 115,793 As of December 31, 2015 (In thousands) Originated Loans Commercial C&I CRE Construction Leases Total Grade 1 $ 60,440 $ 773 $ — $ 12,732 $ 73,945 Grade 2 353,581 831 — 69,258 423,670 Grade 3 1,371,850 319,987 59,182 49,956 1,800,975 Grade 4 3,756,333 1,697,261 569,098 344,763 6,367,455 Grade 5 124,140 18,388 7,193 7,858 157,579 Grade 6 124,483 40,105 9,864 7,174 181,626 Grade 7 2,581 (1 ) — — 2,580 Total $ 5,793,408 $ 2,077,344 $ 645,337 $ 491,741 $ 9,007,830 Acquired Loans Commercial C&I CRE Construction Leases Total Grade 1 $ 346 $ — $ — $ — $ 346 Grade 2 — — — — — Grade 3 15,548 27,387 — — 42,935 Grade 4 200,736 361,518 5,380 — 567,634 Grade 5 11,735 12,546 — — 24,281 Grade 6 11,780 29,440 733 — 41,953 Grade 7 — — — — — Total $ 240,145 $ 430,891 $ 6,113 $ — $ 677,149 FDIC Acquired Loans Commercial C&I CRE Construction Leases Total Grade 1 $ — $ — $ — $ — $ — Grade 2 1,072 — — — 1,072 Grade 3 — 7,004 — — 7,004 Grade 4 31,637 49,917 819 — 82,373 Grade 5 295 — — — 295 Grade 6 2,462 30,853 5,050 — 38,365 Grade 7 — — — — — Total $ 35,466 $ 87,774 $ 5,869 $ — $ 129,109 As of June 30, 2015 (In thousands) Originated Loans Commercial C&I CRE Construction Leases Total Grade 1 $ 65,856 $ 807 $ — $ 14,688 $ 81,351 Grade 2 206,384 1,166 — 29,564 237,114 Grade 3 1,417,295 367,457 55,889 65,664 1,906,305 Grade 4 3,567,387 1,715,998 529,517 321,268 6,134,170 Grade 5 98,137 25,466 360 2,956 126,919 Grade 6 112,661 27,478 1,129 2,562 143,830 Grade 7 3,643 — — — 3,643 Total $ 5,471,363 $ 2,138,372 $ 586,895 $ 436,702 $ 8,633,332 Acquired Loans Commercial C&I CRE Construction Leases Total Grade 1 $ 1,061 $ — $ — $ — $ 1,061 Grade 2 — — — — — Grade 3 17,338 27,190 — — 44,528 Grade 4 289,027 453,830 5,536 — 748,393 Grade 5 13,283 16,815 — — 30,098 Grade 6 16,714 36,110 694 — 53,518 Grade 7 — — — — — Total $ 337,423 $ 533,945 $ 6,230 $ — $ 877,598 FDIC Acquired Loans Commercial C&I CRE Construction Leases Total Grade 1 $ — $ — $ — $ — $ — Grade 2 1,129 — — — 1,129 Grade 3 — — — — — Grade 4 33,992 65,906 817 — 100,715 Grade 5 — 625 — — 625 Grade 6 3,016 35,278 5,058 — 43,352 Grade 7 — — — — — Total $ 38,137 $ 101,809 $ 5,875 $ — $ 145,821

Allowance for Loan Losses (Tabl

Allowance for Loan Losses (Tables)	6 Months Ended
	Jun. 30, 2016
Loans and Leases Receivable Disclosure [Abstract]
Schedule of Credit Losses Related to Financing Receivables, Current and Noncurrent	The following tables show activity in the originated ALL, by portfolio segment for the three and six months ended June 30, 2016 and 2015 , as well as the corresponding recorded investment in originated loans at the end of the period: As of June 30, 2016 (In thousands) Originated Loans C&I CRE Construction Leases Installment Home Equity Lines Credit Cards Residential Mortgages Total Three Months Ended Allowance for originated loan losses, beginning balance $ 44,489 $ 7,244 $ 1,537 $ 1,499 $ 14,664 $ 19,528 $ 8,591 $ 5,363 $ 102,915 Charge-offs (2,593 ) (111 ) — — (5,418 ) (937 ) (1,031 ) (708 ) (10,798 ) Recoveries 1,335 207 2 29 3,573 499 421 45 6,111 Provision for loan losses 1,859 (1,468 ) 1,028 822 3,960 698 (831 ) 879 6,947 Allowance for originated loan losses, ending balance $ 45,090 $ 5,872 $ 2,567 $ 2,350 $ 16,779 $ 19,788 $ 7,150 $ 5,579 $ 105,175 Six Months Ended Allowance for originated loan losses, beginning balance $ 44,760 $ 9,631 $ 1,594 $ 1,313 $ 14,183 $ 20,094 $ 8,831 $ 4,729 $ 105,135 Charge-offs (5,803 ) (220 ) — — (12,186 ) (1,964 ) (2,484 ) (1,158 ) (23,815 ) Recoveries 1,867 232 4 49 7,379 1,123 778 65 11,497 Provision for loan losses 4,266 (3,771 ) 969 988 7,403 535 25 1,942 12,357 Allowance for originated loan losses, ending balance $ 45,090 $ 5,872 $ 2,567 $ 2,350 $ 16,779 $ 19,788 $ 7,150 $ 5,579 $ 105,175 Ending allowance for originated loan losses balance attributable to loans: Individually evaluated for impairment $ 10,447 $ 507 $ — $ — $ 1,149 $ 169 $ 201 $ 981 $ 13,454 Collectively evaluated for impairment 34,643 5,365 2,567 2,350 15,630 19,619 6,949 4,598 91,721 Total ending allowance for originated loan losses balance $ 45,090 $ 5,872 $ 2,567 $ 2,350 $ 16,779 $ 19,788 $ 7,150 $ 5,579 $ 105,175 Originated loans: Originated loans individually evaluated for impairment $ 62,707 $ 29,539 $ 512 $ — $ 42,272 $ 7,874 $ 679 $ 23,385 $ 166,968 Originated loans collectively evaluated for impairment 5,820,287 2,005,959 704,828 508,534 3,310,812 1,268,787 174,307 705,149 14,498,663 Total ending originated loan balance $ 5,882,994 $ 2,035,498 $ 705,340 $ 508,534 $ 3,353,084 $ 1,276,661 $ 174,986 $ 728,534 $ 14,665,631 As of June 30, 2015 (In thousands) Originated Loans C&I CRE Construction Leases Installment Home Equity Lines Credit Cards Residential Mortgages Total Three Months Ended Allowance for originated loan losses, beginning balance $ 39,838 $ 8,813 $ 1,752 $ 629 $ 13,358 $ 19,433 $ 7,801 $ 5,921 $ 97,545 Charge-offs (3,247 ) (408 ) — — (5,090 ) (971 ) (1,209 ) (373 ) (11,298 ) Recoveries 453 1 39 3 2,844 839 358 89 4,626 Provision for loan losses 5,832 94 (251 ) (13 ) 3,798 738 868 (257 ) 10,809 Allowance for originated loan losses, ending balance $ 42,876 $ 8,500 $ 1,540 $ 619 $ 14,910 $ 20,039 $ 7,818 $ 5,380 $ 101,682 Six Months Ended Allowance for originated loan losses, beginning balance $ 37,375 $ 10,492 $ 2,202 $ 674 $ 12,918 $ 19,324 $ 7,966 $ 4,745 $ 95,696 Charge-offs (3,757 ) (623 ) — — (10,145 ) (1,882 ) (2,661 ) (797 ) (19,865 ) Recoveries 794 1 40 7 5,864 1,452 724 124 9,006 Provision for loan losses 8,464 (1,370 ) (702 ) (62 ) 6,273 1,145 1,789 1,308 16,845 Allowance for originated loan losses, ending balance $ 42,876 $ 8,500 $ 1,540 $ 619 $ 14,910 $ 20,039 $ 7,818 $ 5,380 $ 101,682 Ending allowance for originated loan losses balance attributable to loans: Individually evaluated for impairment $ 9,117 $ 151 $ — $ — $ 1,001 $ 217 $ 250 $ 890 $ 11,626 Collectively evaluated for impairment 33,759 8,349 1,540 619 13,909 19,822 7,568 4,490 90,056 Total ending allowance for originated loan losses balance $ 42,876 $ 8,500 $ 1,540 $ 619 $ 14,910 $ 20,039 $ 7,818 $ 5,380 $ 101,682 Originated loans: Originated loans individually evaluated for impairment $ 45,969 $ 12,072 $ — $ 1,162 $ 31,927 $ 7,421 $ 787 $ 24,697 $ 124,035 Originated loans collectively evaluated for impairment 5,425,394 2,126,300 586,895 435,540 2,688,132 1,173,381 167,789 628,446 13,231,877 Total ending originated loan balance $ 5,471,363 $ 2,138,372 $ 586,895 $ 436,702 $ 2,720,059 $ 1,180,802 $ 168,576 $ 653,143 $ 13,355,912 The following table presents the originated ALL and the recorded investment as of December 31, 2015 : As of December 31, 2015 (In thousands) Originated Loans C&I CRE Construction Leases Installment Home Equity Lines Credit Cards Residential Mortgages Total Ending allowance for originated loan losses balance attributable to loans: Individually evaluated for impairment $ 11,837 $ 128 $ — $ — $ 1,009 $ 188 $ 243 $ 944 $ 14,349 Collectively evaluated for impairment 32,923 9,503 1,594 1,313 13,174 19,906 8,588 3,785 90,786 Total ending allowance for originated loan losses balance $ 44,760 $ 9,631 $ 1,594 $ 1,313 $ 14,183 $ 20,094 $ 8,831 $ 4,729 $ 105,135 Originated loans: Loans individually evaluated for impairment $ 43,818 $ 16,614 $ — $ — $ 36,904 $ 7,080 $ 717 $ 23,905 $ 129,038 Loans collectively evaluated for impairment 5,749,590 2,060,730 645,337 491,741 2,953,445 1,241,358 182,126 665,140 13,989,467 Total ending originated loan balance $ 5,793,408 $ 2,077,344 $ 645,337 $ 491,741 $ 2,990,349 $ 1,248,438 $ 182,843 $ 689,045 $ 14,118,505
Allowance for acquired impaired loan losses	The following table presents activity in the allowance for acquired impaired loan losses for the three and six months ended June 30, 2016 and 2015 : Allowance for Acquired Impaired Loan Losses Three Months Ended June 30, Six Months Ended June 30, (In thousands) 2016 2015 2016 2015 Balance at beginning of the period $ 4,423 $ 7,493 $ 3,877 $ 7,457 Charge-offs (19 ) — (19 ) — Recoveries — — — Provision/(recapture) for loan losses (148 ) (2,543 ) 398 (2,507 ) Balance at end of the period $ 4,256 $ 4,950 $ 4,256 $ 4,950
Schedule of Credit Losses for Financing Receivables, Current	The following table presents activity in the allowance for FDIC acquired impaired loan losses for the three and six months ended June 30, 2016 and 2015 : Allowance for FDIC acquired Impaired Loan Losses Three Months Ended June 30, Six Months Ended June 30, (In thousands) 2016 2015 2016 2015 Balance at beginning of the period $ 44,599 $ 41,514 $ 44,679 $ 40,496 Net provision/(recapture) of loan losses before benefit attributable to FDIC loss share agreements (227 ) 928 1,310 5,153 Net (benefit)/recapture attributable to FDIC loss share agreements 12 (1,819 ) (257 ) (6,046 ) Net provision/(recapture) for loan losses (215 ) (891 ) 1,053 (893 ) Increase/(decrease) in loss share receivable (12 ) 1,819 257 6,046 Loans charged-off (4,154 ) (815 ) (5,771 ) (4,022 ) Balance at end of the period $ 40,218 $ 41,627 $ 40,218 $ 41,627
Impaired Financing Receivables	The following tables provide further detail on impaired loans individually evaluated for impairment and the associated ALL. Certain impaired loans do not have a related ALL as the valuation of these impaired loans exceeded the recorded investment. As of June 30, 2016 Originated Loans Unpaid Average Recorded Principal Related Recorded (In thousands) Investment Balance Allowance Investment Impaired loans with no related allowance Commercial C&I $ 19,489 $ 22,663 $ — $ 29,022 CRE 26,058 24,696 — 17,119 Construction 512 512 — 102 Leases — — — — Consumer Installment 2,366 2,697 — 1,636 Home equity line 695 948 — 694 Credit card 15 15 — 19 Residential mortgages 11,950 14,350 — 11,680 Subtotal 61,085 65,881 — 60,272 Impaired loans with a related allowance Commercial C&I 43,218 51,933 10,447 21,305 CRE 3,481 3,563 507 1,999 Construction — — — — Leases — — — — Consumer Installment 39,906 40,033 1,149 35,473 Home equity line 7,179 7,180 169 6,803 Credit card 664 664 201 699 Residential mortgages 11,435 11,549 981 12,201 Subtotal 105,883 114,922 13,454 78,480 Total impaired loans $ 166,968 $ 180,803 $ 13,454 $ 138,752 Note 1: These tables exclude loans fully charged-off. Note 2: The differences between the recorded investment and unpaid principal balance amounts represent partial charge-offs. As of December 31, 2015 Originated Loans Unpaid Average Recorded Principal Related Recorded (In thousands) Investment Balance Allowance Investment Impaired loans with no related allowance Commercial C&I $ 21,066 $ 23,854 $ — $ 27,215 CRE 15,465 17,456 — 13,031 Construction — — — — Consumer Installment 1,369 1,658 — 1,807 Home equity line 670 919 — 999 Credit card 21 21 — 20 Residential mortgages 11,550 13,901 — 11,979 Subtotal 50,141 57,809 — 55,051 Impaired loans with a related allowance Commercial C&I 22,752 28,881 11,837 11,284 CRE 1,149 1,173 128 3,037 Construction — — — — Consumer Installment 35,535 35,592 1,009 28,808 Home equity line 6,410 6,411 188 6,382 Credit card 696 696 243 757 Residential mortgages 12,355 12,458 944 12,619 Subtotal 78,897 85,211 14,349 62,887 Total impaired loans $ 129,038 $ 143,020 $ 14,349 $ 117,938 Note 1: These tables exclude loans fully charged-off. Note 2: The differences between the recorded investment and unpaid principal balance amounts represent partial charge-offs. As of June 30, 2015 Originated Loans Unpaid Average Recorded Principal Related Recorded (In thousands) Investment Balance Allowance Investment Impaired loans with no related allowance Commercial C&I $ 28,076 $ 37,358 $ — $ 27,238 CRE 11,482 17,585 — 12,983 Construction — — — — Leases 1,162 1,162 — 598 Consumer Installment 1,678 2,183 — 1,753 Home equity line 884 1,132 — 906 Credit card 19 19 — 26 Residential mortgages 12,047 14,700 — 12,146 Subtotal 55,348 74,139 — 55,650 Impaired loans with a related allowance Commercial C&I 17,893 18,062 9,117 7,199 CRE 590 593 151 600 Construction — — — — Consumer Installment 30,249 30,302 1,001 25,722 Home equity line 6,537 6,537 217 6,684 Credit card 768 768 250 823 Residential mortgages 12,650 12,739 890 12,675 Subtotal 68,687 69,001 11,626 53,703 Total impaired loans $ 124,035 $ 143,140 $ 11,626 $ 109,353 Note 1: These tables exclude loans fully charged-off. Note 2: The differences between the recorded investment and unpaid principal balance amounts represent partial charge-offs.
Troubled Debt Restructurings on Financing Receivables	The following tables provide the number of loans modified in a TDR and the recorded investment and unpaid principal balance by loan portfolio as of June 30, 2016 , December 31, 2015 , and June 30, 2015 . As of June 30, 2016 (Dollars in thousands) Number of Loans Recorded Investment Unpaid Principal Balance Originated loans Commercial C&I 27 $ 36,650 $ 39,985 CRE 26 20,005 22,025 Construction 0 — — Total originated commercial 53 56,655 62,010 Consumer Installment 1,310 42,272 42,730 Home equity lines 260 7,874 8,128 Credit card 197 679 679 Residential mortgages 303 23,385 25,899 Total originated consumer 2,070 74,210 77,436 Total originated loans 2,123 $ 130,865 $ 139,446 Acquired loans Commercial C&I 0 $ — $ — CRE 6 4,998 5,453 Construction 0 — — Total acquired commercial 6 4,998 5,453 Consumer Installment 67 1,585 1,661 Home equity lines 173 7,520 7,583 Residential mortgages 32 2,899 3,216 Total acquired consumer 272 12,004 12,460 Total acquired loans 278 $ 17,002 $ 17,913 FDIC acquired loans Commercial C&I 0 $ — $ — CRE 3 13,124 11,417 Construction 1 566 672 Total FDIC acquired commercial 4 13,690 12,089 Consumer Home equity lines 71 8,529 8,544 Residential mortgages 0 — — Total FDIC acquired consumer 71 8,529 8,544 Total FDIC acquired loans 75 $ 22,219 $ 20,633 Total loans Commercial C&I 27 $ 36,650 $ 39,985 CRE 35 38,127 38,895 Construction 1 566 672 Total commercial 63 75,343 79,552 Consumer Installment 1,377 43,857 44,391 Home equity lines 504 23,923 24,255 Credit card 197 679 679 Residential mortgages 335 26,284 29,115 Total consumer 2,413 94,743 98,440 Total loans 2,476 $ 170,086 $ 177,992 Note 1: For originated loans, the differences between the recorded investment and unpaid principal balance amounts represent partial charge-offs. Note 2: For acquired and FDIC acquired loans, the differences between the recorded investment and unpaid principal balance amounts represent partial charge-offs and remaining purchase discount. As of December 31, 2015 (Dollars in thousands) Number of Loans Recorded Investment Unpaid Principal Balance Originated loans Commercial C&I 26 $ 33,087 $ 33,740 CRE 24 14,671 16,648 Construction 0 — — Total originated commercial 50 47,758 50,388 Consumer Installment 1,223 36,904 37,250 Home equity lines 257 7,080 7,330 Credit card 212 717 717 Residential mortgages 312 23,905 26,359 Total originated consumer 2,004 68,606 71,656 Total originated loans 2,054 $ 116,364 $ 122,044 Acquired loans Commercial C&I 1 7,611 7,611 CRE 3 918 1,044 Total acquired commercial 4 8,529 8,655 Consumer Installment 51 1,117 1,211 Home equity lines 176 7,718 7,778 Residential mortgages 31 2,154 2,382 Total acquired consumer 258 10,989 11,371 Total acquired loans 262 $ 19,518 $ 20,026 FDIC acquired loans Commercial C&I 0 $ — $ — CRE 3 14,056 12,479 Construction 1 593 682 Total FDIC acquired commercial 4 14,649 13,161 Consumer Home equity lines 81 10,215 10,281 Residential Mortgages 1 182 182 Total FDIC acquired consumer 82 10,397 10,463 Total FDIC acquired loans 86 $ 25,046 $ 23,624 Total loans Commercial C&I 27 $ 40,698 $ 41,351 CRE 30 29,645 30,171 Construction 1 593 682 Total commercial 58 70,936 72,204 Consumer Installment 1,274 38,021 38,461 Home equity lines 514 25,013 25,389 Credit card 212 717 717 Residential mortgages 344 26,241 28,923 Total consumer 2,344 89,992 93,490 Total loans 2,402 $ 160,928 $ 165,694 Note 1: For originated loans, the differences between the recorded investment and unpaid principal balance amounts represent partial charge-offs. Note 2: For acquired and FDIC acquired loans, the differences between the recorded investment and unpaid principal balance amounts represent partial charge-offs and remaining purchase discount. As of June 30, 2015 (Dollars in thousands) Number of Loans Recorded Investment Unpaid Principal Balance Originated loans Commercial C&I 56 $ 29,454 $ 36,538 CRE 69 10,362 15,681 Construction 31 — — Total originated commercial 156 39,816 52,219 Consumer Installment 1,215 31,927 32,485 Home equity lines 271 7,421 7,669 Credit card 231 787 787 Residential mortgages 316 24,697 27,439 Total originated consumer 2,033 64,832 68,380 Total originated loans 2,189 $ 104,648 $ 120,599 Acquired loans Commercial C&I 2 — 55 CRE 3 930 1,018 Total acquired commercial 5 930 1,073 Consumer Installment 50 1,144 1,227 Home equity lines 174 7,138 7,205 Residential mortgages 31 2,150 2,386 Total acquired consumer 255 10,432 10,818 Total acquired loans 260 $ 11,362 $ 11,891 FDIC acquired loans Commercial C&I 8 $ — $ 1,299 CRE 24 11,704 27,933 Construction 9 525 9,542 Total FDIC acquired commercial 41 12,229 38,774 Consumer Home equity lines 77 10,563 10,739 Residential mortgages 1 184 184 Total FDIC acquired consumer 78 10,747 10,923 Total FDIC acquired loans 119 $ 22,976 $ 49,697 Total loans Commercial C&I 66 $ 29,454 $ 37,892 CRE 96 22,996 44,632 Construction 40 525 9,542 Total commercial 202 52,975 92,066 Consumer Installment 1,265 33,071 33,712 Home equity lines 522 25,122 25,613 Credit card 231 787 787 Residential mortgages 348 27,031 30,009 Total consumer 2,366 86,011 90,121 Total loans 2,568 $ 138,986 $ 182,187
Accruing and Nonaccruing Troubled Debt Restructurings	The following tables provide a summary of the delinquency status of TDRs along with the specific allowance for loan loss, by loan type, as of June 30, 2016 , December 31, 2015 , and June 30, 2015 , including TDRs that continue to accrue interest and TDRs included in nonperforming assets. As of June 30, 2016 Accruing TDRs Nonaccruing TDRs Total Total (In thousands) Current Delinquent Total Current Delinquent Total TDRs Allowance Originated loans Commercial C&I $ 16,082 $ 969 $ 17,051 $ 13,068 $ 6,531 $ 19,599 $ 36,650 $ 4,917 CRE 8,851 93 8,944 111 10,950 11,061 20,005 5 Construction — — — — — — — — Total originated commercial 24,933 1,062 25,995 13,179 17,481 30,660 56,655 4,922 Consumer Installment 39,255 1,064 40,319 1,718 235 1,953 42,272 1,149 Home equity lines 7,017 79 7,096 778 — 778 7,874 169 Credit card 519 117 636 — 43 43 679 201 Residential mortgages 14,324 524 14,848 5,717 2,820 8,537 23,385 981 Total originated consumer 61,115 1,784 62,899 8,213 3,098 11,311 74,210 2,500 Total originated TDRs $ 86,048 $ 2,846 $ 88,894 $ 21,392 $ 20,579 $ 41,971 $ 130,865 $ 7,422 Acquired loans Commercial C&I $ — $ — $ — $ — $ — $ — $ — $ — CRE 2,720 — 2,720 2,151 127 2,278 4,998 156 Construction — — — — — — — — Total acquired commercial 2,720 — 2,720 2,151 127 2,278 4,998 156 Consumer Installment 1,142 223 1,365 220 — 220 1,585 86 Home equity lines 6,820 583 7,403 117 — 117 7,520 115 Residential mortgages 2,259 — 2,259 640 — 640 2,899 176 Total acquired consumer 10,221 806 11,027 977 — 977 12,004 377 Total acquired TDRs $ 12,941 $ 806 $ 13,747 $ 3,128 $ 127 $ 3,255 $ 17,002 $ 533 FDIC acquired loans Commercial C&I $ — $ — $ — $ — $ — $ — $ — $ — CRE — — — — 13,124 13,124 13,124 2,236 Construction — — — 566 — 566 566 25 Total FDIC acquired commercial — — — 566 13,124 13,690 13,690 2,261 Consumer Home equity lines 8,392 87 8,479 50 — 50 8,529 21 Residential mortgages — — — — — — — — Total FDIC acquired consumer 8,392 87 8,479 50 — 50 8,529 21 Total FDIC acquired TDRs $ 8,392 $ 87 $ 8,479 $ 616 $ 13,124 $ 13,740 $ 22,219 $ 2,282 Total loans Commercial C&I $ 16,082 $ 969 $ 17,051 $ 13,068 $ 6,531 $ 19,599 $ 36,650 $ 4,917 CRE 11,571 93 11,664 2,262 24,201 26,463 38,127 2,397 Construction — — — 566 — 566 566 25 Total commercial 27,653 1,062 28,715 15,896 30,732 46,628 75,343 7,339 Consumer Installment 40,397 1,287 41,684 1,938 235 2,173 43,857 1,235 Home equity lines 22,229 749 22,978 945 — 945 23,923 305 Credit card 519 117 636 — 43 43 679 201 Residential mortgages 16,583 524 17,107 6,357 2,820 9,177 26,284 1,157 Total consumer 79,728 2,677 82,405 9,240 3,098 12,338 94,743 2,898 Total TDRs $ 107,381 $ 3,739 $ 111,120 $ 25,136 $ 33,830 $ 58,966 $ 170,086 $ 10,237 As of December 31, 2015 Accruing TDRs Nonaccruing TDRs Total Total (In thousands) Current Delinquent Total Current Delinquent Total TDRs Allowance Originated loans Commercial C&I $ 22,566 $ 107 $ 22,673 $ 4,229 $ 6,185 $ 10,414 $ 33,087 $ 6,052 CRE 10,271 2,247 12,518 746 1,407 2,153 14,671 20 Construction — — — — — — — — Total originated commercial 32,837 2,354 35,191 4,975 7,592 12,567 47,758 6,072 Consumer Installment 34,902 794 35,696 1,125 83 1,208 36,904 1,009 Home equity lines 6,511 114 6,625 399 56 455 7,080 188 Credit card 575 140 715 — 2 2 717 243 Residential mortgages 12,869 2,896 15,765 4,611 3,529 8,140 23,905 944 Total originated consumer 54,857 3,944 58,801 6,135 3,670 9,805 68,606 2,384 Total originated TDRs $ 87,694 $ 6,298 $ 93,992 $ 11,110 $ 11,262 $ 22,372 $ 116,364 $ 8,456 Acquired loans Commercial C&I $ 7,611 $ — $ 7,611 $ — $ — $ — $ 7,611 $ — CRE — — — 659 259 918 918 201 Total acquired commercial 7,611 — 7,611 659 259 918 8,529 201 Consumer Installment 967 126 1,093 14 10 24 1,117 45 Home equity lines 6,941 655 7,596 122 — 122 7,718 70 Residential mortgages 1,096 256 1,352 802 — 802 2,154 — Total acquired consumer 9,004 1,037 10,041 938 10 948 10,989 115 Total acquired TDRs $ 16,615 $ 1,037 $ 17,652 $ 1,597 $ 269 $ 1,866 $ 19,518 $ 316 FDIC acquired loans Commercial C&I $ — $ — $ — $ — $ — $ — $ — $ — CRE — 14,056 14,056 — — — 14,056 2,333 Construction 593 — 593 — — — 593 — Total FDIC acquired commercial 593 14,056 14,649 — — — 14,649 2,333 Consumer Home equity lines 10,065 70 10,135 6 74 80 10,215 23 Residential mortgages 182 — 182 — — — 182 — Total FDIC acquired consumer 10,247 70 10,317 6 74 80 10,397 23 Total FDIC acquired TDRs $ 10,840 $ 14,126 $ 24,966 $ 6 $ 74 $ 80 $ 25,046 $ 2,356 Total Loans Commercial C&I $ 30,177 $ 107 $ 30,284 $ 4,229 $ 6,185 $ 10,414 $ 40,698 $ 6,052 CRE 10,271 16,303 26,574 1,405 1,666 3,071 29,645 2,554 Construction 593 — 593 — — — 593 — Total commercial 41,041 16,410 57,451 5,634 7,851 13,485 70,936 8,606 Consumer Installment 35,869 920 36,789 1,139 93 1,232 38,021 1,054 Home equity lines 23,517 839 24,356 527 130 657 25,013 281 Credit card 575 140 715 — 2 2 717 243 Residential mortgages 14,147 3,152 17,299 5,413 3,529 8,942 26,241 944 Total consumer 74,108 5,051 79,159 7,079 3,754 10,833 89,992 2,522 Total TDRs $ 115,149 $ 21,461 $ 136,610 $ 12,713 $ 11,605 $ 24,318 $ 160,928 $ 11,128 As of June 30, 2015 Accruing TDRs Nonaccruing TDRs Total Total (In thousands) Current Delinquent Total Current Delinquent Total TDRs Allowance Originated loans Commercial C&I $ 17,346 $ — $ 17,346 $ 9,260 $ 2,848 $ 12,108 $ 29,454 $ 2,893 CRE 5,968 — 5,968 1,598 2,796 4,394 10,362 63 Construction — — — — — — — — Total originated commercial 23,314 — 23,314 10,858 5,644 16,502 39,816 2,956 Consumer Installment 29,715 603 30,318 1,390 219 1,609 31,927 1,001 Home equity lines 6,611 107 6,718 557 146 703 7,421 217 Credit card 684 100 784 — 3 3 787 250 Residential mortgages 13,925 2,105 16,030 4,957 3,710 8,667 24,697 890 Total originated consumer 50,935 2,915 53,850 6,904 4,078 10,982 64,832 2,358 Total originated TDRs $ 74,249 $ 2,915 $ 77,164 $ 17,762 $ 9,722 $ 27,484 $ 104,648 $ 5,314 Acquired loans Commercial C&I $ — $ — $ — $ — $ — $ — $ — $ — CRE — — — 930 — 930 930 98 Total acquired commercial — — — 930 — 930 930 98 Consumer Installment 1,082 47 1,129 15 — 15 1,144 44 Home equity lines 6,387 618 7,005 133 — 133 7,138 — Residential mortgages 1,313 — 1,313 615 222 837 2,150 — Total acquired consumer 8,782 665 9,447 763 222 985 10,432 44 Total acquired TDRs $ 8,782 $ 665 $ 9,447 $ 1,693 $ 222 $ 1,915 $ 11,362 $ 142 FDIC acquired loans Commercial C&I $ — $ — $ — $ — $ — $ — $ — $ — CRE — 11,704 11,704 — — — 11,704 2,393 Construction 525 — 525 — — — 525 96 Total FDIC acquired commercial 525 11,704 12,229 — — — 12,229 2,489 Consumer Home equity lines 9,505 89 9,594 143 826 969 10,563 23 Residential mortgages 184 — 184 — — — 184 — Total FDIC acquired consumer 9,689 89 9,778 143 826 969 10,747 23 Total FDIC acquired TDRs $ 10,214 $ 11,793 $ 22,007 $ 143 $ 826 $ 969 $ 22,976 $ 2,512 Total loans Commercial C&I $ 17,346 $ — $ 17,346 $ 9,260 $ 2,848 $ 12,108 $ 29,454 $ 2,893 CRE 5,968 11,704 17,672 2,528 2,796 5,324 22,996 2,554 Construction 525 — 525 — — — 525 96 Total commercial 23,839 11,704 35,543 11,788 5,644 17,432 52,975 5,543 Consumer Installment 30,797 650 31,447 1,405 219 1,624 33,071 1,045 Home equity lines 22,503 814 23,317 833 972 1,805 25,122 240 Credit card 684 100 784 — 3 3 787 250 Residential mortgages 15,422 2,105 17,527 5,572 3,932 9,504 27,031 890 Total consumer 69,406 3,669 73,075 7,810 5,126 12,936 86,011 2,425 Total TDRs $ 93,245 $ 15,373 $ 108,618 $ 19,598 $ 10,770 $ 30,368 $ 138,986 $ 7,968
Schedule of Debtor Troubled Debt Restructuring, Current Period	The following tables provide the number of loans modified in a TDR within the previous 12 months that subsequently defaulted during the three months ended June 30, 2016 and June 30, 2015 , as well as the amount defaulted in these restructured loans. Three Months Ended June 30, 2016 (Dollars in thousands) Number of Loans Amount Defaulted Originated loans Commercial C&I 0 $ — CRE 0 — Construction 0 — Total originated commercial 0 $ — Consumer Installment 2 $ 15 Home equity lines 0 — Credit card 0 — Residential mortgages 0 — Total originated consumer 2 $ 15 FDIC acquired loans Commercial C&I 0 $ — CRE 0 — Construction 0 — Total FDIC acquired commercial 0 $ — Acquired loans Commercial C&I 0 $ — CRE 0 — Construction 0 — Total acquired commercial 0 $ — Consumer Installment 0 $ — Home equity lines 0 — Residential mortgages 0 — Total acquired consumer — $ — Total loans Commercial C&I 0 $ — CRE 0 — Construction 0 — Total commercial 0 $ — Consumer Installment 2 $ 15 Home equity lines 0 — Credit card 0 — Residential mortgages 0 — Total consumer 2 $ 15 Total 2 $ 15 Three Months Ended June 30, 2015 (Dollars in thousands) Number of Loans Recorded Investment Originated loans Commercial C&I 0 $ — CRE 0 — Construction 0 — Total originated commercial 0 $ — Consumer Installment 1 $ 6 Home equity lines 0 — Credit card 1 1 Residential mortgages 1 368 Total originated consumer 3 $ 375 FDIC acquired loans Commercial C&I 0 $ — CRE 0 — Construction 0 — Total FDIC acquired commercial 0 $ — Acquired loans Commercial C&I 0 $ — CRE 0 — Construction 0 — Total acquired commercial 0 $ — Consumer Installment 1 $ 33 Home equity lines 0 — Residential mortgages 0 — Total acquired consumer 1 $ 33 Total loans Commercial C&I 0 $ — CRE 0 — Construction 0 — Total commercial 0 $ — Consumer Installment 2 $ 39 Home equity lines 0 — Credit card 1 1 Residential mortgages 1 368 Total consumer 4 $ 408 Total 4 $ 408

Goodwill and Other Intangible27

Goodwill and Other Intangible Assets (Tables)	6 Months Ended
	Jun. 30, 2016
Goodwill and Intangible Assets Disclosure [Abstract]
Accumulated amortization of intangible assets	The Corporation has other intangible assets that are amortized, consisting of core deposit intangibles, lease intangibles and trust relationship intangibles. The following tables show the gross carrying amount, accumulated amortization, and net carrying amount of these intangible assets. June 30, 2016 Gross Carrying Accumulated Net Carrying (In thousands) Amount Amortization Amount Core deposit intangibles (1) $ 82,323 $ (32,083 ) $ 50,240 Lease intangible 238 (229 ) 9 Trust Relationships (2) 14,000 (8,229 ) 5,771 $ 96,561 $ (40,541 ) $ 56,020 December 31, 2015 Gross Carrying Accumulated Net Carrying (In thousands) Amount Amortization Amount Core deposit intangibles (1) $ 82,323 $ (28,304 ) $ 54,019 Lease intangible 238 (212 ) 26 Trust Relationships (2) 14,000 (7,417 ) 6,583 $ 96,561 $ (35,933 ) $ 60,628 June 30, 2015 Gross Carrying Accumulated Net Carrying (In thousands) Amount Amortization Amount Core deposit intangibles (1) $ 82,323 $ (24,150 ) $ 58,173 Lease intangible 238 (194 ) 44 Trust relationships (2) 14,000 (6,393 ) 7,607 $ 96,561 $ (30,737 ) $ 65,824 (1) Core deposit intangibles are amortized on an accelerated basis over their estimated useful lives, which range from 10 - 15 years. (2) Trust relationship intangibles are amortized on an accelerated basis on their estimated useful lives of 12 years .

Shareholders' Equity (Tables)

Shareholders' Equity (Tables)	6 Months Ended
	Jun. 30, 2016
Earnings Per Share [Abstract]
Schedule of Earnings Per Share, Basic and Diluted	The reconciliation between basic and diluted EPS using the two-class method and treasury stock method is presented as follows: Three Months Ended June 30, Six Months Ended June 30, (Dollars in thousands, except per share amounts) 2016 2015 2016 2015 Basic EPS: Net income $ 58,309 $ 56,584 $ 112,445 $ 113,723 Less: Cash dividends on 5.875% non-cumulative perpetual series A, Preferred Stock 1,469 1,469 2,938 2,938 Income allocated to participating securities 496 467 955 937 Net income attributable to common shareholders $ 56,344 $ 54,648 $ 108,552 $ 109,848 Weighted average Common Stock outstanding used in basic EPS 166,188 165,736 165,966 165,574 Basic net income per common share $ 0.34 $ 0.33 $ 0.65 $ 0.66 Diluted EPS: Income used in diluted earnings per common share calculation $ 56,344 $ 54,648 $ 108,552 $ 109,848 Weighted average Common Stock outstanding used in basic EPS 166,188 165,736 165,966 165,574 Add: Common Stock equivalents Employee stock award plans 619 541 597 515 Weighted average Common and Common Stock equivalent shares outstanding 166,807 166,277 166,563 166,089 Diluted net income per common share $ 0.34 $ 0.33 $ 0.65 $ 0.66

Segment Information (Tables)

Segment Information (Tables)	6 Months Ended
	Jun. 30, 2016
Segment Reporting [Abstract]
Lines of business results and key performance measures	The following tables present a summary of financial results as of and for the three and six months ended June 30, 2016 and June 30, 2015 : FirstMerit (In thousands) Commercial Retail Wealth Other Consolidated June 30, 2016 QTD YTD QTD YTD QTD YTD QTD YTD QTD YTD OPERATIONS: Net interest income/(loss) $ 101,313 $ 203,932 $ 94,369 $ 189,096 $ 6,314 $ 12,867 $ (15,918 ) $ (34,661 ) $ 186,078 $ 371,234 Provision/ (recapture) for loan losses 1,070 6,842 5,123 9,169 (20 ) (175 ) 218 (1,636 ) 6,391 14,200 Noninterest income 20,782 41,961 22,079 45,673 15,129 29,437 7,125 15,438 65,115 132,509 Noninterest expense 57,201 118,221 84,880 173,575 13,883 27,236 4,356 8,251 160,320 327,283 Net income/(loss) 41,486 78,539 17,189 33,816 4,927 9,908 (5,293 ) (9,818 ) 58,309 112,445 AVERAGES: Assets $ 9,600,103 $ 9,596,152 $ 6,370,350 $ 6,301,303 $ 314,752 $ 310,159 $ 9,638,361 $ 9,639,033 $ 25,923,566 $ 25,846,647 Loans 9,721,866 9,715,827 6,173,352 6,097,054 306,028 301,586 41,656 46,706 16,242,902 16,161,173 Earning assets 10,081,198 10,077,716 6,178,619 6,103,154 306,028 301,586 6,555,458 6,523,236 23,121,303 23,005,692 Deposits 7,269,121 7,373,805 11,003,769 11,014,512 1,284,516 1,302,113 1,410,044 1,111,129 20,967,450 20,801,559 Economic capital 1,251,845 1,252,069 867,958 870,360 121,824 126,706 770,591 742,055 3,012,218 2,991,190 FirstMerit (In thousands) Commercial Retail Wealth Other Consolidated June 30, 2015 QTD YTD QTD YTD QTD YTD QTD YTD QTD YTD OPERATIONS: Net interest income/(loss) $ 101,342 $ 202,830 $ 92,501 $ 184,527 $ 5,452 $ 10,932 $ (14,177 ) $ (27,548 ) $ 185,118 $ 370,741 Provision/ (recapture) for loan losses 2,285 1,759 8,447 15,981 (1 ) (171 ) (1,765 ) (355 ) 8,966 17,214 Noninterest income 21,918 44,408 23,964 45,701 14,816 28,792 5,884 13,528 66,582 132,429 Noninterest expense 61,032 122,685 87,799 176,070 13,461 27,181 (618 ) (3,610 ) 161,674 322,326 Net income/(loss) 38,963 79,816 13,142 24,815 4,425 8,264 54 828 56,584 113,723 AVERAGES: Assets $ 9,437,824 $ 9,445,975 $ 5,951,665 $ 5,898,835 $ 290,798 $ 296,461 $ 9,449,572 $ 9,374,463 $ 25,129,859 $ 25,015,734 Loans 9,533,843 9,520,262 5,702,015 5,636,666 281,013 286,484 60,490 59,274 15,577,361 15,502,686 Earning assets 9,828,867 9,811,770 5,707,400 5,645,469 281,013 286,484 6,535,441 6,483,544 22,352,721 22,227,267 Deposits 6,777,434 6,831,887 11,105,954 11,115,005 1,188,563 1,214,617 610,711 573,990 19,682,662 19,735,499 Economic capital 1,355,049 1,349,289 767,803 763,446 111,770 109,969 657,810 656,765 2,892,432 2,879,469

Derivatives and Hedging Activ30

Derivatives and Hedging Activities (Tables)	6 Months Ended
	Jun. 30, 2016
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Derivative Instruments Designated as Hedging Instruments	At June 30, 2016 , December 31, 2015 , and June 30, 2015 , the notional values or contractual amounts and fair value of the Corporation's derivatives designated in hedge relationships were as follows: Asset Derivatives Liability Derivatives June 30, 2016 December 31, 2015 June 30, 2015 June 30, 2016 December 31, 2015 June 30, 2015 (In thousands) Notional/ Contract Amount Fair Value (1) Notional/ Contract Amount Fair Value (1) Notional/ Contract Amount Fair Value (1) Notional/ Contract Amount Fair Value (2) Notional/ Contract Amount Fair Value (2) Notional/ Contract Amount Fair Value (2) Interest rate swaps: Commercial loan swaps (FRAPS) $ — $ — $ — $ — $ — $ — $ 50,668 $ 2,772 $ 55,689 $ 3,536 $ 75,794 $ 5,104 Sub debt swap 250,000 29,760 250,000 8,739 250,000 1,153 — — — — — — Fair value hedges $ 250,000 $ 29,760 $ 250,000 $ 8,739 $ 250,000 $ 1,153 $ 50,668 $ 2,772 $ 55,689 $ 3,536 $ 75,794 $ 5,104 ( 1) Included in "Other assets" on the Consolidated Balance Sheets (2) Included in "Other liabilities" on the Consolidated Balance Sheet
Derivative Instruments not Designated as Hedging Instruments	As of June 30, 2016 , December 31, 2015 , and June 30, 2015 , the notional values or contractual amounts and fair value of the Corporation's derivatives not designated in hedge relationships were as follows: Asset Derivatives Liability Derivatives June 30, 2016 December 31, 2015 June 30, 2015 June 30, 2016 December 31, 2015 June 30, 2015 (In thousands) Notional/ Contract Amount Fair Value (1) Notional/ Contract Amount Fair Value (1) Notional/ Contract Amount Fair Value (1) Notional/ Contract Amount Fair Value (2) Notional/ Contract Amount Fair Value (2) Notional/ Contract Amount Fair Value (2) Interest rate swaps $ 1,904,459 $ 87,575 $ 1,824,576 $ 48,920 $ 1,726,600 $ 46,216 $ 1,904,459 $ 87,575 $ 1,824,576 $ 48,920 $ 1,726,600 $ 46,216 Mortgage loan commitments 32,802 253 20,635 149 52,024 342 — — — — — — Forward sales contracts — — — — 15,200 106 8,059 61 9,659 5 — — Credit contracts — — — — — — 74,945 7 73,715 — 73,512 — Foreign exchange 20,180 254 13,671 299 29,687 256 18,571 207 11,706 284 15,823 177 Equity swap — — — — — — 35,034 — 36,631 — 31,718 — Total $ 1,957,441 $ 88,082 $ 1,858,882 $ 49,368 $ 1,823,511 $ 46,920 $ 2,041,068 $ 87,850 $ 1,956,287 $ 49,209 $ 1,847,653 $ 46,393 (1) Included in "Other assets" on the Consolidated Balance Sheets (2) Included in "Other liabilities" on the Consolidated Balance Sheets
Derivative Instruments, Gain (Loss)	Gains and losses recognized in income on non-designated hedging instruments for the three and six months ended June 30, 2016 and 2015 are as follows: Derivatives not instruments Location of Gain/(Loss) Derivative Amount of Gain / (Loss) Recognized in Income on Derivatives (In thousands) Three Months Ended June 30, Six Months Ended June 30, 2016 2015 2016 2015 Mortgage loan commitments Loan sales and servicing income $ 12 $ (46 ) $ 105 $ (1,066 ) Forward sales contracts Loan sales and servicing income 20 175 (56 ) 378 Foreign exchange contracts Other operating income 766 165 1,585 (712 ) Equity swap Other operating expense — — — — Total $ 798 $ 294 $ 1,634 $ (1,400 )
Offsetting disclosure for derivatives contracts	The following tables illustrate the potential effect of the Corporation's derivative master netting arrangements, by type of financial instrument, on the Corporation's statement of financial position as of June 30, 2016 , December 31, 2015 , and June 30, 2015 . The swap agreements the Corporation has in place with its commercial customers are not subject to enforceable master netting arrangements, and, therefore, are excluded from these tables. As of June 30, 2016 Gross amounts recognized Gross amounts offset in the consolidated balance sheet Net amounts presented in the consolidated balance sheet Gross amounts not offset in the consolidated balance sheet Net amount (In thousands) Financial instruments (1) Collateral (2) Derivative Assets Interest rate swaps - designated $ 29,760 $ — $ 29,760 $ — $ — $ 29,760 Interest rate swaps - non-designated 3 $ — 3 (3 ) — — Foreign exchange 76 — 76 (76 ) — — Total derivative assets $ 29,839 $ — $ 29,839 $ (79 ) $ — $ 29,760 Derivative liabilities Interest rate swaps - designated $ 2,772 $ — $ 2,772 $ — $ (2,772 ) $ — Interest rate swaps - non-designated 87,572 — 87,572 (3 ) (87,569 ) — Foreign exchange 131 — 131 (76 ) (55 ) — Total derivative liabilities $ 90,475 $ — $ 90,475 $ (79 ) $ (90,396 ) $ — As of December 31, 2015 Gross amounts recognized Gross amounts offset in the consolidated balance sheet Net amounts presented in the consolidated balance sheet Gross amounts not offset in the consolidated balance sheet Net amount (In thousands) Financial instruments (1) Collateral (2) Derivative assets Interest rate swaps - designated $ 8,739 $ — $ 8,739 $ — $ — $ 8,739 Interest rate swaps - non-designated 155 — 155 (155 ) — — Foreign exchange 270 — 270 (32 ) (238 ) — Total derivative assets $ 9,164 $ — $ 9,164 $ (187 ) $ (238 ) $ 8,739 Derivative liabilities Interest rate swaps - designated $ 3,536 $ — $ 3,536 $ — $ (3,536 ) $ — Interest rate swaps - non-designated 48,765 — 48,765 (155 ) (48,610 ) — Foreign exchange 32 — 32 (32 ) — — Total derivative liabilities $ 52,333 $ — $ 52,333 $ (187 ) $ (52,146 ) $ — As of June 30, 2015 Gross amounts recognized Gross amounts offset in the consolidated balance sheet Net amounts presented in the consolidated balance sheet Gross amounts not offset in the consolidated balance sheet Net amount (In thousands) Financial instruments (1) Collateral (2) Derivative assets Interest rate swaps - designated 1,153 — 1,153 — — 1,153 Interest rate swaps - non-designated $ 414 $ — $ 414 $ (414 ) $ — $ — Foreign exchange 164 — 164 (49 ) (115 ) — Total derivative assets $ 1,731 $ — $ 1,731 $ (463 ) $ (115 ) $ 1,153 Derivative liabilities Interest rate swaps - designated $ 5,104 $ — $ 5,104 $ — $ (5,104 ) $ — Interest rate swaps - non-designated 45,802 — 45,802 (414 ) (45,388 ) — Foreign exchange 49 — 49 (49 ) — — Total derivative liabilities $ 50,955 $ — $ 50,955 $ (463 ) $ (50,492 ) $ — (1) For derivative assets, this includes any derivative liability fair values that could be offset in the event of counterparty default. For derivative liabilities, this includes any derivative asset fair values that could be offset in the event of counterparty default. (2) For derivate assets, this includes the fair value of collateral received by the Corporation from the counterparty. Securities received as collateral are not included in the Consolidated Balance Sheets unless the counterparty defaults. For derivative liabilities, this includes the fair value of securities pledged by the Corporation to the counterparty. These securities are included in the Consolidated Balance Sheets unless the Corporation defaults.

Benefit Plans (Tables)

Benefit Plans (Tables)	6 Months Ended
	Jun. 30, 2016
Compensation and Retirement Disclosure [Abstract]
Schedule of Net Benefit Costs	The components of net periodic benefit cost are as follows: Pension Benefits Three Months Ended June 30, Six Months Ended June 30, (In thousands) 2016 2015 2016 2015 Service cost $ 198 $ 207 $ 396 $ 415 Interest cost 3,649 3,517 7,298 7,035 Expected return on assets (3,788 ) (3,902 ) (7,576 ) (7,804 ) Amortization of unrecognized prior service costs 75 570 150 1,140 Amortization of actuarial losses/(gains) 830 1,057 1,660 2,113 Net periodic pension cost $ 964 $ 1,449 $ 1,928 $ 2,899 Postretirement Benefits Three Months Ended June 30, Six Months Ended June 30, (In thousands) 2016 2015 2016 2015 Service cost $ 26 $ 41 $ 52 $ 83 Interest cost 64 144 127 288 Amortization of unrecognized prior service costs (636 ) (160 ) (1,271 ) (319 ) Amortization of actuarial losses/(gains) 245 81 490 163 Net periodic postretirement cost $ (301 ) $ 106 $ (602 ) $ 215

Fair Value Measurement (Tables)

Fair Value Measurement (Tables)	6 Months Ended
	Jun. 30, 2016
Fair Value Disclosures [Abstract]
Recurring and Nonrecurring Fair Value Measurements	The following tables present the balance of assets and liabilities measured at fair value on a recurring and nonrecurring basis as of June 30, 2016 , December 31, 2015 , and June 30, 2015 : Fair Value by Hierarchy (In thousands) June 30, 2016 Level 1 Level 2 Level 3 Recurring fair value measurement Available-for-sale securities: Marketable equity securities $ 2,788 $ 2,788 $ — $ — U.S. treasury notes & bonds 4,997 — 4,997 — U.S. government agency debentures 2,528 — 2,528 — U.S. States and political subdivisions 151,547 — 151,547 — Residential mortgage-backed securities: U.S. government agencies 860,247 — 860,247 — Commercial mortgage-backed securities: U.S. government agencies 202,048 — 202,048 — Residential collateralized mortgage-backed securities: U.S. government agencies 2,353,018 — 2,353,018 — Non-agency 3 — — 3 Commercial collateralized mortgage-backed securities: U.S. government agencies 398,611 — 398,611 — Corporate debt securities 51,107 — — 51,107 Asset-backed securities: Collateralized loan obligations 291,794 — — 291,794 Total available for sale securities 4,318,688 2,788 3,972,996 342,904 Residential loans held for sale 3,962 — 3,962 — Derivative assets: Interest rate swaps - fair value hedges 29,760 — 29,760 — Interest rate swaps - nondesignated 87,575 — 87,575 — Mortgage loan commitments 253 — 253 — Foreign exchange 254 — 254 — Total derivative assets 117,842 — 117,842 — Total fair value of assets (1) $ 4,440,492 $ 2,788 $ 4,094,800 $ 342,904 Derivative liabilities: Interest rate swaps - fair value hedges $ 2,772 $ — $ 2,772 $ — Interest rate swaps - nondesignated 87,575 — 87,575 — Forward sales contracts 61 — 61 — Credit contracts 7 — 7 — Foreign exchange 207 — 207 — Total derivative liabilities 90,622 — 90,622 — True-up liability 16,170 — — 16,170 Total fair value of liabilities (1) $ 106,792 $ — $ 90,622 $ 16,170 Nonrecurring fair value measurement Mortgage servicing rights (2) $ 15,954 $ — $ — $ 15,954 Impaired loans (3) 104,208 — — 104,208 Other property (4) 10,027 — — 10,027 Other real estate covered by loss share (5) 4 — — 4 Total nonrecurring fair value $ 130,193 $ — $ — $ 130,193 (1) There were no transfers between levels 1, 2 or 3 of the fair value hierarchy during the three months ended June 30, 2016 . (2) MSRs with a recorded investment of $17.3 million were reduced by a specific valuation allowance totaling $1.5 million to a reported carrying value of $15.8 million resulting in recognition of $0.7 million in expense included in loan sales and servicing income in the three months ended June 30, 2016 . (3) At June 30, 2016 , collateral dependent impaired loans with a recorded investment of $116.1 million were reduced by specific valuation allowance allocations totaling $11.9 million to a reported net carrying value of $104.2 million . (4) Amounts do not include assets held at cost at June 30, 2016 . During the three months ended June 30, 2016 , the re-measurement of foreclosed assets at fair value subsequent to initial recognition resulted in losses of $0.7 million included in noninterest expense. Fair Value by Hierarchy (In thousands) December 31, 2015 Level 1 Level 2 Level 3 Recurring fair value measurement Available-for-sale securities: Marketable equity securities $ 2,821 $ 2,821 $ — $ — U.S treasury notes & bonds 5,000 — 5,000 — U.S. government agency debentures 2,498 — 2,498 — U.S. States and political subdivisions 192,795 — 192,795 — Residential mortgage-backed securities: U.S. government agencies 906,229 — 906,229 — Commercial mortgage-backed securities: U.S. government agencies 172,109 — 172,109 — Residential collateralized mortgage-backed securities: U.S. government agencies 2,128,320 — 2,128,320 — Non-agency 4 — — 4 Commercial collateralized mortgage-backed securities: U.S. government agencies 216,319 — 216,319 — Corporate debt securities 52,229 — — 52,229 Asset-backed securities Collateralized loan obligations 289,411 — — 289,411 Total available-for-sale securities 3,967,735 2,821 3,623,270 341,644 Residential loans held for sale 5,472 — 5,472 — Derivative assets: Interest rate swaps - fair value hedges 8,739 — 8,739 — Interest rate swaps - nondesignated 48,920 — 48,920 — Mortgage loan commitments 149 — 149 — Foreign exchange 299 — 299 — Total derivative assets 58,107 — 58,107 — Total fair value of assets (1) $ 4,031,314 $ 2,821 $ 3,686,849 $ 341,644 Derivative liabilities: Interest rate swaps - fair value hedges $ 3,536 $ — $ 3,536 $ — Interest rate swaps - nondesignated 48,920 — 48,920 — Forward sale contracts 5 — 5 — Foreign exchange 284 — 284 — Total derivative liabilities 52,745 — 52,745 — True-up liability 14,750 — — 14,750 Total fair value of liabilities (1) $ 67,495 $ — $ 52,745 $ 14,750 Nonrecurring fair value measurement Mortgage servicing rights (2) $ 19,149 $ — $ — $ 19,149 Impaired loans (3) 71,428 — — 71,428 Other property (4) 18,576 — — 18,576 Other real estate covered by loss share (5) 365 — — 365 Total nonrecurring fair value $ 109,518 $ — $ — $ 109,518 (1) There were no transfers between levels 1, 2 or 3 of the fair value hierarchy during the year ended December 31, 2015 . (2) MSRs with a recorded investment of $18.9 million were reduced by a specific valuation allowance totaling $0.4 million to a reported carrying value of $18.5 million resulting in a recovery of previously recognized expense of $0.6 million in recoveries included in loans sales and servicing income in the year ended December 31, 2015 . (3) At December 31, 2015 , collateral dependent impaired loans with a recorded investment of $84.3 million were reduced by specific valuation allowance allocations totaling $12.9 million to a reported net carrying value of $71.4 million . (4) Amounts do not include assets held at cost at December 31, 2015 . During the year ended December 31, 2015 , the re-measurement of foreclosed assets at fair value subsequent to initial recognition resulted in losses of $4.5 million included in noninterest expense. (5) Amounts do not include assets held at cost at December 31, 2015 . During the year ended December 31, 2015 , the re-measurement of covered foreclosed assets at fair value subsequent to initial recognition resulted in losses of $0.6 million included in noninterest expense. Fair Value by Hierarchy (In thousands) June 30, 2015 Level 1 Level 2 Level 3 Recurring fair value measurement Available-for-sale securities: Marketable equity securities $ 2,824 $ 2,824 $ — $ — U.S. treasury notes & bonds 5,005 — 5,005 — U.S. government agency debentures 2,510 — 2,510 — U.S. States and political subdivisions 207,617 — 207,617 — Residential mortgage-backed securities: U.S. government agencies 960,852 — 960,852 — Commercial mortgage-backed securities: U.S. government agencies 170,338 — 170,338 — Residential collateralized mortgage-backed securities: U.S. government agencies 1,949,389 — 1,949,389 — Non-agency 5 — — 5 Commercial collateralized mortgage-backed securities: U.S. government agencies 228,438 — 228,438 — Corporate debt securities 53,450 — — 53,450 Asset-backed securities: Collateralized loan obligations 258,081 — — 258,081 Total available-for-sale securities 3,838,509 2,824 3,524,149 311,536 Residential loans held for sale 5,432 — 5,432 — Derivative assets: Interest rate swaps - fair value hedges 1,153 — 1,153 — Interest rate swaps - nondesignated 46,216 — 46,216 — Mortgage loan commitments 342 — 342 — Forward sale contracts 106 — 106 — Foreign exchange 256 — 256 — Total derivative assets 48,073 — 48,073 — Total fair value of assets (1) $ 3,892,014 $ 2,824 $ 3,577,654 $ 311,536 Derivative liabilities: Interest rate swaps - fair value hedges $ 5,104 $ — $ 5,104 $ — Interest rate swaps - nondesignated 46,216 — 46,216 — Foreign exchange 177 — 177 — Total derivative liabilities 51,497 — 51,497 — True-up liability 13,408 — — 13,408 Total fair value of liabilities (1) $ 64,905 $ — $ 51,497 $ 13,408 Nonrecurring fair value measurement Mortgage servicing rights (2) $ 20,809 $ — $ — $ 20,809 Impaired loans (3) 72,580 — — 72,580 Other property (4) 33,078 — — 33,078 Other real estate covered by loss share (5) 4 — — 4 Total nonrecurring fair value $ 126,471 $ — $ — $ 126,471 (1) There were no transfers between levels 1, 2 and 3 of the fair value hierarchy during the three months ended June 30, 2015 . (2) MSRs with a recorded investment of $20.6 million were reduced by a specific valuation allowance totaling $0.5 million to a reported carrying value of $20.1 million resulting in recovery of a previously recognized expense of $0.6 million in the three months ended June 30, 2015 . (3) At June 30, 2015 , collateral dependent impaired loans with a recorded investment of $82.7 million were reduced by specific valuation allowance allocations totaling $10.2 million to a reported net carrying value of $72.6 million . (4) Amounts do not include assets held at cost at June 30, 2015 . During the three months ended June 30, 2015 , the re-measurement of foreclosed assets at fair value subsequent to initial recognition resulted in losses of $2.1 million included in noninterest expense. (5) Amounts do not include assets held at cost at June 30, 2015 . During the three months ended June 30, 2015 , the re-measurement of covered foreclosed assets at fair value subsequent to initial recognition resulted in losses of $0.2 million included in noninterest expense.
Summary of changes in Level 3 assets and liabilities measured at fair value	The changes in Level 3 assets and liabilities measured at fair value on a recurring basis for the three and six months ended June 30, 2016 and 2015 are summarized as follows: Three Months Ended June 30, Six Months Ended June 30, 2016 2015 2016 2015 (In thousands) Available-for-sale securities True-up liability Available-for-sale securities True-up liability Available-for-sale securities True-up liability Available-for-sale securities True-up liability Balance at beginning of period $ 334,157 $ 15,115 $ 346,685 $ 13,707 $ 341,644 $ 14,750 $ 339,187 $ 13,294 (Gains) losses included in earnings (1) — 1,055 — (299 ) — 1,420 — 114 Unrealized gains (losses) (2) 8,926 — 4,561 — 1,370 — 11,697 — Purchases — — 41,509 — — — 41,509 — Sales — — (71,832 ) — — — (71,832 ) — Settlements (179 ) — (9,387 ) — (110 ) — (9,025 ) — Balance at ending of period $ 342,904 $ 16,170 $ 311,536 $ 13,408 $ 342,904 $ 16,170 $ 311,536 $ 13,408 (1) Reported in "Other expense" (2) Reported in "Other comprehensive income (loss)"
Summary of Change in fair value carrying amount of residential mortgages	The aggregate fair value, contractual balance and gain or loss on loans held for sale was as follows: (In thousands) June 30, 2016 December 31, 2015 June 30, 2015 Aggregate fair value carrying amount $ 3,962 $ 5,472 $ 5,432 Aggregate unpaid principal / contractual balance 3,836 5,320 5,285 Carrying amount over aggregate unpaid principal (1) $ 126 $ 152 $ 147 (1) These changes are included in "Loan sales and servicing income" in the Consolidated Statements of Income.
Fair Value of Financial Instruments	The carrying amount and estimated fair value of the Corporation’s financial instruments that are carried at either fair value or cost as of June 30, 2016 , December 31, 2015 , and June 30, 2015 are shown in the tables below. June 30, 2016 Carrying Amount Fair Value (In thousands) Total Level 1 Level 2 Level 3 Financial assets: Cash and cash equivalents $ 524,287 $ 524,287 $ 524,287 $ — $ — Available-for-sale securities 4,318,688 4,318,688 2,788 3,972,996 342,904 Held-to-maturity securities 2,514,161 2,545,740 — 2,545,740 — Other securities 148,367 148,367 — 148,367 — Loans held for sale 3,962 3,962 — 3,962 — Net originated loans 14,560,456 14,349,013 — — 14,349,013 Net acquired loans 1,484,380 1,532,344 — — 1,532,344 Net FDIC acquired loans and loss share receivable 149,121 149,121 — — 149,121 Accrued interest receivable 65,666 65,666 — 65,666 — Derivatives 117,842 117,842 — 117,842 — Financial liabilities: Deposits $ 20,952,643 $ 20,960,182 $ — $ 20,960,182 — Federal funds purchased and securities sold under agreements to repurchase 686,890 686,890 — 686,890 — Wholesale borrowings 468,447 473,187 — 473,187 — Long-term debt 526,389 522,151 — 522,151 — Accrued interest payable 10,632 10,632 — 10,632 — Derivatives 90,622 90,622 — 90,622 — December 31, 2015 Carrying Amount Fair Value (In thousands) Total Level 1 Level 2 Level 3 Financial assets: Cash and cash equivalents $ 463,817 $ 463,817 $ 463,817 $ — $ — Available-for-sale securities 3,967,735 3,967,735 2,821 3,623,270 341,644 Held-to-maturity securities 2,674,093 2,659,119 — 2,659,119 — Other securities 148,172 148,172 — 148,172 — Loans held for sale 5,472 5,472 — 5,472 — Net originated loans 14,013,370 13,795,058 — — 13,795,058 Net acquired loans 1,739,194 1,796,314 — — 1,796,314 Net FDIC acquired loans and loss share receivable 170,690 170,690 — — 170,690 Accrued interest receivable 67,887 67,887 — 67,887 — Derivatives 58,107 58,107 — 58,107 — Financial liabilities: Deposits $ 20,108,003 $ 20,116,298 $ — $ 20,116,298 $ — Federal funds purchased and securities sold under agreements to repurchase 1,037,075 1,037,075 — 1,037,075 — Wholesale borrowings 580,648 582,120 — 582,120 — Long-term debt 505,173 503,675 — 503,675 — Accrued interest payable 10,758 10,758 — 10,758 — Derivatives 52,745 52,745 — 52,745 — June 30, 2015 Carrying Amount Fair Value (In thousands) Total Level 1 Level 2 Level 3 Financial assets: Cash and cash equivalents $ 587,589 $ 587,589 $ 587,589 $ — $ — Available-for-sale securities 3,838,509 3,838,509 2,824 3,524,149 311,536 Held-to-maturity securities 2,787,513 2,760,120 — 2,760,120 — Other securities 147,967 147,967 — 147,967 — Loans held for sale 5,432 5,432 — 5,432 — Net originated loans 13,254,230 13,077,485 — — 13,077,485 Net acquired loans 2,090,734 2,167,304 — — 2,167,304 Net FDIC acquired loans and loss share receivable 211,887 211,887 — — 211,887 Accrued interest receivable 66,501 66,501 — 66,501 — Derivatives 48,073 48,073 — 48,073 — Financial liabilities: Deposits $ 19,673,850 $ 19,681,270 $ — $ 19,681,270 $ — Federal funds purchased and securities sold under agreements to repurchase 1,519,250 1,519,250 — 1,519,250 — Wholesale borrowings 366,074 369,337 — 369,337 — Long-term debt 497,393 509,900 — 509,900 — Accrued interest payable 9,910 9,910 — 9,910 — Derivatives 51,497 51,497 — 51,497 —

Mortgage Servicing Rights and33

Mortgage Servicing Rights and Mortgage Servicing Activity (Tables)	6 Months Ended
	Jun. 30, 2016
Transfers and Servicing [Abstract]
Changes in the carrying amount of mortgage servicing rights	Changes in the carrying amount of MSRs and MSRs valuation allowance are as follows: Three Months Ended June 30, Six Months Ended June 30, (In thousands) 2016 2015 2016 2015 Carrying amount of MSRs Beginning balance $ 18,127 $ 21,490 $ 18,938 $ 22,011 Additions 32 63 60 533 Amortization (849 ) (918 ) (1,688 ) (1,909 ) Ending balance 17,310 20,635 17,310 20,635 Valuation Allowance: Beginning balance (868 ) (1,131 ) (399 ) (955 ) Recoveries/(Additions) (681 ) 641 (1,150 ) 465 Ending balance (1,549 ) (490 ) (1,549 ) (490 ) MSRs, net carrying balance $ 15,761 $ 20,145 $ 15,761 $ 20,145 Fair value at end of period $ 15,954 $ 20,809 $ 15,954 $ 20,809
Changes in Key economics assumptions	In reality, changes in one factor may result in changes in another (for example, changes in prepayment speed estimates could result in changes in the discount rates), which might magnify or counteract the sensitivities. (Dollars in thousands) Prepayment speed assumption (annual CPR) 13.41 % Decrease in fair value from 10% adverse change $ 964 Decrease in fair value from 25% adverse change $ 1,242 Discount rate assumption 9.39 % Decrease in fair value from 100 basis point adverse change $ 463 Decrease in fair value from 200 basis point adverse change $ 898 Expected weighted-average life (in months) 85

Contingencies and Guarantees (T

Contingencies and Guarantees (Tables)	6 Months Ended
	Jun. 30, 2016
Commitments and Contingencies Disclosure [Abstract]
Schedule of Commitments to Extend Credit	The Corporation's credit risk associated with these instruments is represented by the contractual amounts indicated in the following table. Unused commitments to extend credit (In thousands) June 30, 2016 December 31, 2015 June 30, 2015 Commercial $ 3,505,383 $ 3,992,089 $ 3,746,824 Consumer 2,508,315 2,393,058 2,397,353 Total unused commitments to extend credit $ 6,013,698 $ 6,385,147 $ 6,144,177
Schedule of Guarantor Obligations	The Corporation is a guarantor in certain agreements with third parties. The Corporation's maximum credit risk associated with these instruments is represented by the contractual amounts indicated in the following table. Financial guarantees (In thousands) June 30, 2016 December 31, 2015 June 30, 2015 Standby letters of credit $ 220,913 $ 254,703 $ 255,418 Loans sold with recourse 11,543 12,902 28,891 Total financial guarantees $ 232,456 $ 267,605 $ 284,309
Changes in Repurchase Reserve	Changes in the repurchase reserves for the three and six months ended June 30, 2016 and 2015 are as follows: Three Months Ended June 30, Six Months Ended June 30, (In thousands) 2016 2015 2016 2015 Balance at beginning of period $ 2,625 $ 6,650 $ 2,725 $ 7,250 Net increase/(decrease) to reserve — 363 (53 ) (39 ) Net realized (losses)/gains — (363 ) (47 ) (561 ) Balance at end of period $ 2,625 $ 6,650 $ 2,625 $ 6,650

Changes and Reclassifications35

Changes and Reclassifications Out of Accumulated Other Comprehensive Income (Tables)	6 Months Ended
	Jun. 30, 2016
Changes and Reclassifications Out of Other Comprehensive Income [Abstract]
Schedule of Accumulated Other Comprehensive Income (Loss)	The following table presents the changes in AOCI by component of comprehensive income for the three and six months ended June 30, 2016 and 2015 : Three Months Ended Six Months Ended June 30, 2016 June 30, 2016 (In thousands) Pretax Tax After tax Pretax Tax After tax Unrealized and realized securities gains and losses: Balance at the beginning of the period $ 14,447 $ 1,682 $ 12,765 $ (32,786 ) $ (15,840 ) $ (16,946 ) Changes in unrealized securities' holding gains/(losses) 31,489 11,431 20,058 79,868 28,994 50,874 Changes in unrealized securities' holding gains/(losses) that result from securities being transferred from available-for-sale into held-to-maturity (221 ) (79 ) (142 ) (1,072 ) (14 ) (1,058 ) Net losses/(gains) realized on sale of securities reclassified to noninterest income (2,164 ) (786 ) (1,378 ) (2,459 ) (892 ) (1,567 ) Balance at the end of the period 43,551 12,248 31,303 43,551 12,248 31,303 Pension plans and other postretirement benefits: Balance at the beginning of the period (93,852 ) (32,746 ) (61,106 ) (95,760 ) (33,432 ) (62,328 ) Amortization of actuarial losses/(gains) 1,076 390 686 3,244 1,163 2,081 Amortization of prior service cost reclassified to other noninterest expense (560 ) (204 ) (356 ) (820 ) (291 ) (529 ) Balance at the end of the period (93,336 ) (32,560 ) (60,776 ) (93,336 ) (32,560 ) (60,776 ) Total Accumulated Other Comprehensive Income $ (49,785 ) $ (20,312 ) $ (29,473 ) $ (49,785 ) $ (20,312 ) $ (29,473 ) Three Months Ended Six Months Ended June 30, 2015 June 30, 2015 (In thousands) Pretax Tax After tax Pretax Tax After tax Unrealized and realized securities gains and losses: Balance at the beginning of the period $ 24,728 $ 8,656 $ 16,072 $ (8,531 ) $ (2,985 ) $ (5,546 ) Changes in unrealized securities' holding gains/(losses) (28,642 ) (10,024 ) (18,618 ) 5,475 1,916 3,559 Changes in unrealized securities' holding gains/(losses) that result from securities being transferred from available-for-sale into held-to-maturity (575 ) (203 ) (372 ) (1,079 ) (378 ) (701 ) Net losses/(gains) realized on sale of securities reclassified to noninterest income (567 ) (198 ) (369 ) (921 ) (322 ) (599 ) Balance at the end of the period (5,056 ) (1,769 ) (3,287 ) (5,056 ) (1,769 ) (3,287 ) Pension plans and other postretirement benefits: Balance at the beginning of the period (100,520 ) (35,181 ) (65,339 ) (102,068 ) (35,722 ) (66,346 ) Amortization of actuarial losses/(gains) 1,138 399 739 2,276 797 1,479 Amortization of prior service cost reclassified to other noninterest expense 410 144 266 820 287 533 Balance at the end of the period (98,972 ) (34,638 ) (64,334 ) (98,972 ) (34,638 ) (64,334 ) Total Accumulated Other Comprehensive Income $ (104,028 ) $ (36,407 ) $ (67,621 ) $ (104,028 ) $ (36,407 ) $ (67,621 )
Tax Effect of Changes and Reclassifications Out of Accumulated Other Comprehensive Income	The following table presents current period reclassifications out of AOCI by component of comprehensive income for the three and six months ended June 30, 2016 and 2015 : Three Months Ended Six Months Ended Income statement line item presentation (In thousands) June 30, 2016 June 30, 2016 Realized (gains)/losses on sale of securities $ (2,164 ) $ (2,459 ) Investment securities losses (gains), net Tax expense (benefit) (36.3%) (786 ) (892 ) Income tax expense (benefit) Reclassified amount, net of tax $ (1,378 ) $ (1,567 ) Three Months Ended Six Months Ended Income statement line item presentation (In thousands) June 30, 2015 June 30, 2015 Realized (gains)/losses on sale of securities $ (567 ) $ (921 ) Investment securities losses (gains), net Tax expense (benefit) (35%) (198 ) (322 ) Income tax expense (benefit) Reclassified amount, net of tax $ (369 ) $ (599 )

Significant Accounting Polici36

Significant Accounting Policies (Details) $ / shares in Units, $ in Millions	Jan. 25, 2016USD ($)$ / shares	Jun. 30, 2016banking_offices
Accounting Policies [Abstract]
Number of branches | banking_offices		359
The Huntington National Bank | FirstMerit
Business Acquisition [Line Items]
Share Price	$ 8.80
Business Combination, Consideration Transferred | $	$ 3,400
Business Acquisition, Equity Interest Issued or Issuable, Number of Shares Issued, Per Share	$ 1.72
Business Combination, Cash Consideration, Per Share	5
Business Acquisition, Share Price	$ 20.14

Investment Securities (Amortize

Investment Securities (Amortized Cost Table and Fair Value of Held to Maturity and Available for Sale Securities) (Details) - USD ($) $ in Thousands	Jun. 30, 2016	Dec. 31, 2015	Jun. 30, 2015
Securities available for sale
Available-for-sale Securities, Amortized Cost	$ 4,274,004	$ 4,005,782	$ 3,851,202
Available-for-sale Debt Securities, Gross Unrealized Gains	65,212	18,980	30,747
Available-for-sale Debt Securities, Gross Unrealized Losses	(20,528)	(57,027)	(43,440)
Available-for-sale	4,318,688	3,967,735	3,838,509
Securities held to maturity
Held-to-maturity Securities, Amortized Cost	2,514,161	2,674,093	2,787,513
Held-to-maturity Securities, Gross Unrealized Gains	38,966	28,375	17,579
Held-to-maturity Securities, Gross Unrealized Losses	(7,387)	(43,349)	(44,972)
Held-to-maturity Securities, Fair Value	2,545,740	2,659,119	2,760,120
US Treasury Securities
Securities available for sale
Available-for-sale Securities, Amortized Cost	4,996	5,001	5,004
Available-for-sale Debt Securities, Gross Unrealized Gains	1	0	1
Available-for-sale Debt Securities, Gross Unrealized Losses	0	(1)	0
Available-for-sale	4,997	5,000	5,005
Securities held to maturity
Held-to-maturity Securities, Amortized Cost	0
Held-to-maturity Securities, Fair Value	0
US Government Agencies Debt Securities
Securities available for sale
Available-for-sale Securities, Amortized Cost	2,500	2,500	2,500
Available-for-sale Debt Securities, Gross Unrealized Gains	28	0	10
Available-for-sale Debt Securities, Gross Unrealized Losses	0	(2)	0
Available-for-sale	2,528	2,498	2,510
Securities held to maturity
Held-to-maturity Securities, Amortized Cost	25,000	25,000	25,000
Held-to-maturity Securities, Gross Unrealized Gains	35	19	0
Held-to-maturity Securities, Gross Unrealized Losses	0	0	(323)
Held-to-maturity Securities, Fair Value	25,035	25,019	24,677
U.S. States and political subdivisions debt securities
Securities available for sale
Available-for-sale Securities, Amortized Cost	147,807	188,829	203,449
Available-for-sale Debt Securities, Gross Unrealized Gains	3,742	4,170	5,191
Available-for-sale Debt Securities, Gross Unrealized Losses	(2)	(204)	(1,023)
Available-for-sale	151,547	192,795	207,617
Securities held to maturity
Held-to-maturity Securities, Amortized Cost	540,425	571,738	529,441
Held-to-maturity Securities, Gross Unrealized Gains	15,713	22,180	8,104
Held-to-maturity Securities, Gross Unrealized Losses	(265)	(262)	(1,942)
Held-to-maturity Securities, Fair Value	555,873	593,656	535,603
Residential Mortgage Backed Securities Issued by US Government Sponsored Enterprises
Securities available for sale
Available-for-sale Securities, Amortized Cost	840,250	900,358	947,347
Available-for-sale Debt Securities, Gross Unrealized Gains	20,064	11,325	18,068
Available-for-sale Debt Securities, Gross Unrealized Losses	(67)	(5,454)	(4,563)
Available-for-sale	860,247	906,229	960,852
Securities held to maturity
Held-to-maturity Securities, Amortized Cost	467,462	507,908	555,273
Held-to-maturity Securities, Gross Unrealized Gains	12,367	4,767	6,919
Held-to-maturity Securities, Gross Unrealized Losses	0	(2,999)	(2,940)
Held-to-maturity Securities, Fair Value	479,829	509,676	559,252
Commercial Mortgage Backed Securities Issued by US Government Sponsored Enterprises
Securities available for sale
Available-for-sale Securities, Amortized Cost	198,069	173,912	171,842
Available-for-sale Debt Securities, Gross Unrealized Gains	4,095	220	643
Available-for-sale Debt Securities, Gross Unrealized Losses	(116)	(2,023)	(2,147)
Available-for-sale	202,048	172,109	170,338
Securities held to maturity
Held-to-maturity Securities, Amortized Cost	87,964	64,951	57,462
Held-to-maturity Securities, Gross Unrealized Gains	1,991	294	412
Held-to-maturity Securities, Gross Unrealized Losses	(42)	(574)	(219)
Held-to-maturity Securities, Fair Value	89,913	64,671	57,655
Residential Collateralized Mortgage-Backed Securities Issued by US Government Sponsored Enterprises
Securities available for sale
Available-for-sale Securities, Amortized Cost	2,325,707	2,155,808	1,968,918
Available-for-sale Debt Securities, Gross Unrealized Gains	30,400	2,659	4,779
Available-for-sale Debt Securities, Gross Unrealized Losses	(3,089)	(30,147)	(24,308)
Available-for-sale	2,353,018	2,128,320	1,949,389
Securities held to maturity
Held-to-maturity Securities, Amortized Cost	1,060,496	1,161,340	1,267,321
Held-to-maturity Securities, Gross Unrealized Gains	4,327	75	445
Held-to-maturity Securities, Gross Unrealized Losses	(6,670)	(35,881)	(35,025)
Held-to-maturity Securities, Fair Value	1,058,153	1,125,534	1,232,741
Residential Collateralized Mortgage-Backed Securities Issued by Non-US Government Agency
Securities available for sale
Available-for-sale Securities, Amortized Cost	3	4	5
Available-for-sale Debt Securities, Gross Unrealized Gains	0	0	0
Available-for-sale Debt Securities, Gross Unrealized Losses	0	0	0
Available-for-sale	3	4	5
Securities held to maturity
Held-to-maturity Securities, Amortized Cost	0
Held-to-maturity Securities, Fair Value	0
Commercial Collateralized Mortgage Backed Securities Issued by US Government Sponsored Enterprises
Securities available for sale
Available-for-sale Securities, Amortized Cost	392,205	217,008	227,889
Available-for-sale Debt Securities, Gross Unrealized Gains	6,528	580	1,254
Available-for-sale Debt Securities, Gross Unrealized Losses	(122)	(1,269)	(705)
Available-for-sale	398,611	216,319	228,438
Securities held to maturity
Held-to-maturity Securities, Amortized Cost	246,509	255,359	263,741
Held-to-maturity Securities, Gross Unrealized Gains	3,559	676	1,004
Held-to-maturity Securities, Gross Unrealized Losses	(410)	(3,611)	(4,523)
Held-to-maturity Securities, Fair Value	249,658	252,424	260,222
Collateralized Loan Obligations
Securities available for sale
Available-for-sale Securities, Amortized Cost	297,939	297,831	259,743
Available-for-sale Debt Securities, Gross Unrealized Gains	354	26	801
Available-for-sale Debt Securities, Gross Unrealized Losses	(6,499)	(8,446)	(2,463)
Available-for-sale	291,794	289,411	258,081
Securities held to maturity
Held-to-maturity Securities, Amortized Cost	0
Held-to-maturity Securities, Fair Value	0
Corporate debt securities
Securities available for sale
Available-for-sale Securities, Amortized Cost	61,740	61,710	61,681
Available-for-sale Debt Securities, Gross Unrealized Gains	0	0	0
Available-for-sale Debt Securities, Gross Unrealized Losses	(10,633)	(9,481)	(8,231)
Available-for-sale	51,107	52,229	53,450
Securities held to maturity
Held-to-maturity Securities, Amortized Cost	86,305	87,797	89,275
Held-to-maturity Securities, Gross Unrealized Gains	974	364	695
Held-to-maturity Securities, Gross Unrealized Losses	0	(22)	0
Held-to-maturity Securities, Fair Value	87,279	88,139	89,970
Debt Securities
Securities available for sale
Available-for-sale Securities, Amortized Cost	4,271,216	4,002,961	3,848,378
Available-for-sale Debt Securities, Gross Unrealized Gains	65,212	18,980	30,747
Available-for-sale Debt Securities, Gross Unrealized Losses	(20,528)	(57,027)	(43,440)
Available-for-sale	4,315,900	3,964,914	3,835,685
Marketable Equity Securities
Securities available for sale
Available-for-sale Securities, Amortized Cost	2,788	2,821	2,824
Available-for-sale Debt Securities, Gross Unrealized Gains	0	0	0
Available-for-sale Debt Securities, Gross Unrealized Losses	0	0	0
Available-for-sale	2,788	2,821	2,824
Other Security Investments
Securities available for sale
Available-for-sale Securities, Amortized Cost			0
Available-for-sale Debt Securities, Gross Unrealized Gains			0
Available-for-sale Debt Securities, Gross Unrealized Losses			0
Available-for-sale			0
Equity Securities
Securities available for sale
Available-for-sale Securities, Amortized Cost	2,788		2,824
Available-for-sale Debt Securities, Gross Unrealized Gains	0		0
Available-for-sale Debt Securities, Gross Unrealized Losses	0		0
Available-for-sale	$ 2,788	$ 2,821	$ 2,824

Investment Securities (Schedule

Investment Securities (Schedule of General Obligation Bonds) (Details) $ in Thousands	Jun. 30, 2016USD ($)issuers	Dec. 31, 2015USD ($)issuers	Jun. 30, 2015USD ($)
general obligation bonds [Line Items]
General obligation bonds, number of issuers	636	712	773
General obligation bonds, average issue size, fair value	$ 1,037	$ 1,033	$ 910
General obligation bonds, amortized cost	642,763	712,035	694,291
General obligation bonds, fair value	$ 659,686	$ 735,350	$ 703,590
MICHIGAN
general obligation bonds [Line Items]
General obligation bonds, number of issuers	116	137	153
General obligation bonds, average issue size, fair value	$ 1,404	$ 1,381	$ 1,018
General obligation bonds, amortized cost	157,403	180,508	152,499
General obligation bonds, fair value	$ 162,897	$ 189,259	$ 155,712
Ohio
general obligation bonds [Line Items]
General obligation bonds, number of issuers	108	111	127
General obligation bonds, average issue size, fair value	$ 1,095	$ 1,091	$ 964
General obligation bonds, amortized cost	115,545	116,783	121,716
General obligation bonds, fair value	$ 118,300	$ 121,117	$ 122,474
Wisconsin
general obligation bonds [Line Items]
General obligation bonds, number of issuers	54	69	70
General obligation bonds, average issue size, fair value	$ 651	$ 673	$ 585
General obligation bonds, amortized cost	34,046	44,794	39,774
General obligation bonds, fair value	$ 35,166	$ 46,454	$ 40,950
ILLINOIS
general obligation bonds [Line Items]
General obligation bonds, number of issuers	52	55	60
General obligation bonds, average issue size, fair value	$ 1,783	$ 1,870	$ 1,784
General obligation bonds, amortized cost	90,772	99,524	105,581
General obligation bonds, fair value	$ 92,711	$ 102,867	$ 107,033
TEXAS
general obligation bonds [Line Items]
General obligation bonds, number of issuers	51	58	67
General obligation bonds, average issue size, fair value	$ 816	$ 807	$ 759
General obligation bonds, amortized cost	40,409	45,818	50,370
General obligation bonds, fair value	$ 41,629	$ 46,805	$ 50,877
PENNSYLVANIA
general obligation bonds [Line Items]
General obligation bonds, number of issuers	41	42	46
General obligation bonds, average issue size, fair value	$ 1,037	$ 1,020	$ 1,014
General obligation bonds, amortized cost	41,674	42,185	46,547
General obligation bonds, fair value	$ 42,529	$ 42,835	$ 46,666
NEW JERSEY
general obligation bonds [Line Items]
General obligation bonds, number of issuers	31	35	34
General obligation bonds, average issue size, fair value	$ 724	$ 725	$ 720
General obligation bonds, amortized cost	21,928	24,810	23,916
General obligation bonds, fair value	$ 22,441	$ 25,372	$ 24,472
WASHINGTON
general obligation bonds [Line Items]
General obligation bonds, number of issuers	27	29	30
General obligation bonds, average issue size, fair value	$ 968	$ 950	$ 939
General obligation bonds, amortized cost	25,586	27,080	27,783
General obligation bonds, fair value	$ 26,149	$ 27,548	$ 28,169
MINNESOTA
general obligation bonds [Line Items]
General obligation bonds, number of issuers	23	33	34
General obligation bonds, average issue size, fair value	$ 699	$ 667	$ 692
General obligation bonds, amortized cost	15,667	21,679	23,267
General obligation bonds, fair value	$ 16,076	$ 22,020	$ 23,540
NEW YORK
general obligation bonds [Line Items]
General obligation bonds, number of issuers	18	18	18
General obligation bonds, average issue size, fair value	$ 575	$ 635	$ 633
General obligation bonds, amortized cost	10,044	11,161	11,187
General obligation bonds, fair value	$ 10,346	$ 11,422	$ 11,392
MISSOURI
general obligation bonds [Line Items]
General obligation bonds, number of issuers	10	15	15
General obligation bonds, average issue size, fair value	$ 1,075	$ 1,078	$ 1,084
General obligation bonds, amortized cost	10,414	15,878	15,981
General obligation bonds, fair value	$ 10,754	$ 16,174	$ 16,265
Other states
general obligation bonds [Line Items]
General obligation bonds, number of issuers	105	110	119
General obligation bonds, average issue size, fair value	$ 768	$ 759	$ 639
General obligation bonds, amortized cost	79,275	81,815	75,670
General obligation bonds, fair value	$ 80,688	$ 83,477	$ 76,040

Investment Securities (Other In

Investment Securities (Other Investments Table) (Details) - USD ($) $ in Thousands	Jun. 30, 2016	Dec. 31, 2015	Jun. 30, 2015
Other investments
FRB stock	$ 56,303	$ 56,083	$ 55,853
FHLB stock	91,714	91,714	91,713
Other	350	375	401
Total other investments	$ 148,367	$ 148,172	$ 147,967

Investment Securities (Realized

Investment Securities (Realized Gain Loss Table) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Proceeds and gross unrealized gains and losses on sales of available-for-sale securities
Realized gains	$ 2,164	$ 672	$ 2,459	$ 1,064
Realized losses	0	(105)	0	(143)
Net securities (losses)/gains	$ 2,164	$ 567	$ 2,459	$ 921

Investment Securities (Gross Un

Investment Securities (Gross Unrealized Loss Table) (Details) $ in Thousands	Jun. 30, 2016USD ($)securities	Dec. 31, 2015USD ($)securities	Jun. 30, 2015USD ($)securities
Securities available for sale
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value	$ 169,846	$ 1,849,320	$ 1,057,236
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	$ (2,201)	$ (19,569)	$ (10,569)
Available-for-sale, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions, Less than One Year | securities	30	180	139
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value	$ 576,936	$ 913,649	$ 1,029,278
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	$ (18,327)	$ (37,458)	$ (32,871)
Available-for-sale, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions, Greater than or Equal to One Year | securities	60	91	97
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value	$ 746,782	$ 2,762,969	$ 2,086,514
Available-for-sale Securities, Continuous Unrealized Loss Position, Total	(20,528)	(57,027)	(43,440)
Securities held to maturity
Held-to-maturity Securities, Continuous Unrealized Loss Position, Less than 12 Months, Fair Value	22,005	370,605	305,627
Held-to-maturity Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	$ (61)	$ (2,916)	$ (3,233)
Held to Maturity Securities in Unrealized Loss Positions Less than Twelve Months Qualitative Disclosure Number of Positions | securities	9	58	127
Held-to-maturity Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value	$ 652,638	$ 1,171,297	$ 1,329,114
Held-to-maturity Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	$ (7,326)	$ (40,433)	$ (41,739)
Held to Maturity Securities in Unrealized Loss Positions Twelve Months or Longer Qualitative Disclosure Number of Positions | securities	50	79	83
Held-to-maturity Securities, Continuous Unrealized Loss Position, Fair Value	$ 674,643	$ 1,541,902	$ 1,634,741
Held-to-maturity Securities, Continuous Unrealized Loss Position, Total	(7,387)	(43,349)	(44,972)
US Government Agencies Debt Securities
Securities available for sale
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value		2,498
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss		$ (2)
Available-for-sale, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions, Less than One Year | securities		1
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value		$ 0
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss		$ 0
Available-for-sale, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions, Greater than or Equal to One Year | securities		0
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value		$ 2,498
Available-for-sale Securities, Continuous Unrealized Loss Position, Total		(2)
Securities held to maturity
Held-to-maturity Securities, Continuous Unrealized Loss Position, Less than 12 Months, Fair Value			0
Held-to-maturity Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss			$ 0
Held to Maturity Securities in Unrealized Loss Positions Less than Twelve Months Qualitative Disclosure Number of Positions | securities			0
Held-to-maturity Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value			$ 24,677
Held-to-maturity Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss			$ (323)
Held to Maturity Securities in Unrealized Loss Positions Twelve Months or Longer Qualitative Disclosure Number of Positions | securities			1
Held-to-maturity Securities, Continuous Unrealized Loss Position, Fair Value			$ 24,677
Held-to-maturity Securities, Continuous Unrealized Loss Position, Total			(323)
U.S. States and political subdivisions debt securities
Securities available for sale
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value	1,567	10,178	32,237
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	$ (2)	$ (37)	$ (587)
Available-for-sale, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions, Less than One Year | securities	3	20	52
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value	$ 0	$ 5,899	$ 5,642
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	$ 0	$ (167)	$ (436)
Available-for-sale, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions, Greater than or Equal to One Year | securities	0	9	9
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value	$ 1,567	$ 16,077	$ 37,879
Available-for-sale Securities, Continuous Unrealized Loss Position, Total	(2)	(204)	(1,023)
Securities held to maturity
Held-to-maturity Securities, Continuous Unrealized Loss Position, Less than 12 Months, Fair Value	3,525	18,465	98,867
Held-to-maturity Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	$ (19)	$ (224)	$ (1,872)
Held to Maturity Securities in Unrealized Loss Positions Less than Twelve Months Qualitative Disclosure Number of Positions | securities	7	21	112
Held-to-maturity Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value	$ 6,569	$ 4,174	$ 4,430
Held-to-maturity Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	$ (246)	$ (38)	$ (70)
Held to Maturity Securities in Unrealized Loss Positions Twelve Months or Longer Qualitative Disclosure Number of Positions | securities	9	6	6
Held-to-maturity Securities, Continuous Unrealized Loss Position, Fair Value	$ 10,094	$ 22,639	$ 103,297
Held-to-maturity Securities, Continuous Unrealized Loss Position, Total	(265)	(262)	(1,942)
Residential Mortgage Backed Securities Issued by US Government Sponsored Enterprises
Securities available for sale
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value	14,275	328,156	196,219
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	$ (67)	$ (3,026)	$ (2,087)
Available-for-sale, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions, Less than One Year | securities	5	27	15
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value	$ 0	$ 95,895	$ 103,498
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	$ 0	$ (2,428)	$ (2,476)
Available-for-sale, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions, Greater than or Equal to One Year | securities	0	7	8
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value	$ 14,275	$ 424,051	$ 299,717
Available-for-sale Securities, Continuous Unrealized Loss Position, Total	(67)	(5,454)	(4,563)
Securities held to maturity
Held-to-maturity Securities, Continuous Unrealized Loss Position, Less than 12 Months, Fair Value	0	85,738	83,112
Held-to-maturity Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	$ 0	$ (715)	$ (483)
Held to Maturity Securities in Unrealized Loss Positions Less than Twelve Months Qualitative Disclosure Number of Positions | securities	0	6	5
Held-to-maturity Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value	$ 0	$ 97,880	$ 105,289
Held-to-maturity Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	$ 0	$ (2,284)	$ (2,457)
Held to Maturity Securities in Unrealized Loss Positions Twelve Months or Longer Qualitative Disclosure Number of Positions | securities	0	6	6
Held-to-maturity Securities, Continuous Unrealized Loss Position, Fair Value	$ 0	$ 183,618	$ 188,401
Held-to-maturity Securities, Continuous Unrealized Loss Position, Total	0	(2,999)	(2,940)
Commercial Mortgage Backed Securities Issued by US Government Sponsored Enterprises
Securities available for sale
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value	23,570	107,074	96,573
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	$ (28)	$ (1,447)	$ (1,457)
Available-for-sale, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions, Less than One Year | securities	1	15	14
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value	$ 12,627	$ 12,401	$ 17,335
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	$ (88)	$ (576)	$ (690)
Available-for-sale, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions, Greater than or Equal to One Year | securities	1	1	2
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value	$ 36,197	$ 119,475	$ 113,908
Available-for-sale Securities, Continuous Unrealized Loss Position, Total	(116)	(2,023)	(2,147)
Securities held to maturity
Held-to-maturity Securities, Continuous Unrealized Loss Position, Less than 12 Months, Fair Value	13,478	34,833	7,263
Held-to-maturity Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	$ (42)	$ (346)	$ (41)
Held to Maturity Securities in Unrealized Loss Positions Less than Twelve Months Qualitative Disclosure Number of Positions | securities	1	6	1
Held-to-maturity Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value	$ 0	$ 9,269	$ 9,430
Held-to-maturity Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	$ 0	$ (228)	$ (178)
Held to Maturity Securities in Unrealized Loss Positions Twelve Months or Longer Qualitative Disclosure Number of Positions | securities	0	1	1
Held-to-maturity Securities, Continuous Unrealized Loss Position, Fair Value	$ 13,478	$ 44,102	$ 16,693
Held-to-maturity Securities, Continuous Unrealized Loss Position, Total	(42)	(574)	(219)
Residential Collateralized Mortgage-Backed Securities Issued by US Government Sponsored Enterprises
Securities available for sale
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value	13,182	1,130,779	596,646
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	$ (271)	$ (10,587)	$ (4,398)
Available-for-sale, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions, Less than One Year | securities	1	78	42
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value	$ 332,305	$ 597,403	$ 706,376
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	$ (2,818)	$ (19,560)	$ (19,910)
Available-for-sale, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions, Greater than or Equal to One Year | securities	29	49	53
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value	$ 345,487	$ 1,728,182	$ 1,303,022
Available-for-sale Securities, Continuous Unrealized Loss Position, Total	(3,089)	(30,147)	(24,308)
Securities held to maturity
Held-to-maturity Securities, Continuous Unrealized Loss Position, Less than 12 Months, Fair Value	0	140,514	111,360
Held-to-maturity Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	$ 0	$ (1,225)	$ (835)
Held to Maturity Securities in Unrealized Loss Positions Less than Twelve Months Qualitative Disclosure Number of Positions | securities	0	12	8
Held-to-maturity Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value	$ 598,383	$ 941,982	$ 1,042,351
Held-to-maturity Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	$ (6,670)	$ (34,656)	$ (34,190)
Held to Maturity Securities in Unrealized Loss Positions Twelve Months or Longer Qualitative Disclosure Number of Positions | securities	37	55	56
Held-to-maturity Securities, Continuous Unrealized Loss Position, Fair Value	$ 598,383	$ 1,082,496	$ 1,153,711
Held-to-maturity Securities, Continuous Unrealized Loss Position, Total	(6,670)	(35,881)	(35,025)
Commercial Collateralized Mortgage Backed Securities Issued by US Government Sponsored Enterprises
Securities available for sale
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value	24,401	113,825	46,771
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	$ (38)	$ (893)	$ (71)
Available-for-sale, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions, Less than One Year | securities	4	12	5
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value	$ 19,071	$ 23,400	$ 61,120
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	$ (84)	$ (376)	$ (634)
Available-for-sale, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions, Greater than or Equal to One Year | securities	1	2	7
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value	$ 43,472	$ 137,225	$ 107,891
Available-for-sale Securities, Continuous Unrealized Loss Position, Total	(122)	(1,269)	(705)
Securities held to maturity
Held-to-maturity Securities, Continuous Unrealized Loss Position, Less than 12 Months, Fair Value	0	71,812	5,025
Held-to-maturity Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	$ 0	$ (384)	$ (2)
Held to Maturity Securities in Unrealized Loss Positions Less than Twelve Months Qualitative Disclosure Number of Positions | securities	0	7	1
Held-to-maturity Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value	$ 47,686	$ 117,992	$ 142,937
Held-to-maturity Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	$ (410)	$ (3,227)	$ (4,521)
Held to Maturity Securities in Unrealized Loss Positions Twelve Months or Longer Qualitative Disclosure Number of Positions | securities	4	11	13
Held-to-maturity Securities, Continuous Unrealized Loss Position, Fair Value	$ 47,686	$ 189,804	$ 147,962
Held-to-maturity Securities, Continuous Unrealized Loss Position, Total	(410)	(3,611)	(4,523)
Collateralized Loan Obligations
Securities available for sale
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value	92,851	151,810	84,565
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	$ (1,795)	$ (3,576)	$ (1,204)
Available-for-sale, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions, Less than One Year | securities	16	26	10
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value	$ 161,827	$ 126,422	$ 86,082
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	$ (4,704)	$ (4,870)	$ (1,259)
Available-for-sale, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions, Greater than or Equal to One Year | securities	21	15	11
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value	$ 254,678	$ 278,232	$ 170,647
Available-for-sale Securities, Continuous Unrealized Loss Position, Total	(6,499)	(8,446)	(2,463)
Corporate debt securities
Securities available for sale
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value		0	4,225
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss		$ 0	$ (765)
Available-for-sale, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions, Less than One Year | securities		0	1
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value	$ 51,106	$ 52,229	$ 49,225
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	$ (10,633)	$ (9,481)	$ (7,466)
Available-for-sale, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions, Greater than or Equal to One Year | securities	8	8	7
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value	$ 51,106	$ 52,229	$ 53,450
Available-for-sale Securities, Continuous Unrealized Loss Position, Total	(10,633)	(9,481)	$ (8,231)
Securities held to maturity
Held-to-maturity Securities, Continuous Unrealized Loss Position, Less than 12 Months, Fair Value	5,002	19,243
Held-to-maturity Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	$ 0	$ (22)
Held to Maturity Securities in Unrealized Loss Positions Less than Twelve Months Qualitative Disclosure Number of Positions | securities	1	6
Held-to-maturity Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value	$ 0	$ 0
Held-to-maturity Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	$ 0	$ 0
Held to Maturity Securities in Unrealized Loss Positions Twelve Months or Longer Qualitative Disclosure Number of Positions | securities	0	0
Held-to-maturity Securities, Continuous Unrealized Loss Position, Fair Value	$ 5,002	$ 19,243
Held-to-maturity Securities, Continuous Unrealized Loss Position, Total	$ 0	(22)
US Treasury Securities
Securities available for sale
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value		5,000
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss		$ (1)
Available-for-sale, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions, Less than One Year | securities		1
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value		$ 0
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss		$ 0
Available-for-sale, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions, Greater than or Equal to One Year | securities		0
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value		$ 5,000
Available-for-sale Securities, Continuous Unrealized Loss Position, Total		$ (1)

Investment Securities (Maturiti

Investment Securities (Maturities Table) (Details) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2016	Dec. 31, 2015	Jun. 30, 2015
Securities Available for Sale
One year or less	$ 10,957
Available for Sale Securities Debt Maturities Maturity Period of One Year or Less Weighted Average Yield	2.32%
Over one year through five years	$ 224,674
Available for Sale Securities Debt Maturities Maturity Period over One Year Through Five Years Weighted Average Yield	3.54%
Over five years through ten years	$ 554,884
Available for Sale Securities Debt Maturities Maturity Period over Five Years Through Ten Years Weighted Average Yield	2.92%
Over ten years	$ 3,525,385
Available for Sale Securities Debt Maturities Maturity Period over Ten Years Weighted Average Yield	2.23%
Available-for-sale	$ 4,318,688	$ 3,967,735	$ 3,838,509
Amortized Cost	$ 4,274,004	4,005,782	3,851,202
Weighted-Average Yield	2.39%
Securities Held to Maturity
One year or less	$ 87,315
Held to Maturity Securities Debt Maturities Maturity Period over One Year Through Five Years Weighted Average Yield	2.36%
Over one year through five years	$ 364,802
Held to Maturity Securities Debt Maturities Maturity Period over Five Years Through Ten Years Weighted Average Yield	2.47%
Over five years through ten years	$ 308,418
Held to Maturity Securities Debt Maturities Maturity Period over Ten Years Weighted Average Yield	3.83%
Over ten years	$ 1,785,205
Held to Maturity Securities Debt Maturities Maturity Period Weighted Average Yield	2.02%
Held-to-maturity Securities, Fair Value	$ 2,545,740	2,659,119	2,760,120
Held-to-maturity Securities, Carrying Amount	$ 2,514,161	2,674,093	2,787,513
Weighted Average Yield	2.31%
Available for Sale Securities, Debt Maturities, Weighted-Average Mat	3 years 12 months 7 days
Held to Maturity Securities Debt Maturities-Weighted Aver Maturity	3 years 12 months 29 days
US Government Agencies Debt Securities
Securities Available for Sale
One year or less	$ 0
Over one year through five years	2,528
Over five years through ten years	0
Over ten years	0
Available-for-sale	2,528	2,498	2,510
Amortized Cost	$ 2,500	2,500	2,500
Weighted-Average Yield	1.25%
Securities Held to Maturity
One year or less	$ 0
Over one year through five years	25,035
Over five years through ten years	0
Over ten years	0
Held-to-maturity Securities, Fair Value	25,035	25,019	24,677
Held-to-maturity Securities, Carrying Amount	$ 25,000	25,000	25,000
Weighted Average Yield	1.43%
Available for Sale Securities, Debt Maturities, Weighted-Average Mat	2 years 8 months 2 days
Held to Maturity Securities Debt Maturities-Weighted Aver Maturity	3 years 12 months 29 days
US Treasury Securities
Securities Available for Sale
One year or less	$ 4,997
Over one year through five years	0
Over five years through ten years	0
Over ten years	0
Available-for-sale	4,997	5,000	5,005
Amortized Cost	$ 4,996	5,001	5,004
Weighted-Average Yield	0.31%
Securities Held to Maturity
One year or less	$ 0
Over one year through five years	0
Over five years through ten years	0
Over ten years	0
Held-to-maturity Securities, Fair Value	0
Held-to-maturity Securities, Carrying Amount	$ 0
Weighted Average Yield	0.00%
Available for Sale Securities, Debt Maturities, Weighted-Average Mat	6 months
Held to Maturity Securities Debt Maturities-Weighted Aver Maturity	1 day
U.S. States and political subdivisions debt securities
Securities Available for Sale
One year or less	$ 5,895
Over one year through five years	75,103
Over five years through ten years	51,441
Over ten years	19,108
Available-for-sale	151,547	192,795	207,617
Amortized Cost	$ 147,807	188,829	203,449
Weighted-Average Yield	5.00%
Securities Held to Maturity
One year or less	$ 64,872
Over one year through five years	157,172
Over five years through ten years	193,355
Over ten years	140,474
Held-to-maturity Securities, Fair Value	555,873	593,656	535,603
Held-to-maturity Securities, Carrying Amount	$ 540,425	571,738	529,441
Weighted Average Yield	4.21%
Available for Sale Securities, Debt Maturities, Weighted-Average Mat	2 years 5 months 24 days
Held to Maturity Securities Debt Maturities-Weighted Aver Maturity	5 years 4 months 11 days
Residential Mortgage Backed Securities Issued by US Government Sponsored Enterprises
Securities Available for Sale
One year or less	$ 65
Over one year through five years	86,480
Over five years through ten years	47,116
Over ten years	726,586
Available-for-sale	860,247	906,229	960,852
Amortized Cost	$ 840,250	900,358	947,347
Weighted-Average Yield	2.98%
Securities Held to Maturity
One year or less	$ 0
Over one year through five years	0
Over five years through ten years	21,307
Over ten years	458,522
Held-to-maturity Securities, Fair Value	479,829	509,676	559,252
Held-to-maturity Securities, Carrying Amount	$ 467,462	507,908	555,273
Weighted Average Yield	2.13%
Available for Sale Securities, Debt Maturities, Weighted-Average Mat	3 years 9 months 23 days
Held to Maturity Securities Debt Maturities-Weighted Aver Maturity	3 years 12 months 29 days
Commercial Mortgage Backed Securities Issued by US Government Sponsored Enterprises
Securities Available for Sale
One year or less	$ 0
Over one year through five years	24,498
Over five years through ten years	123,441
Over ten years	54,109
Available-for-sale	202,048	172,109	170,338
Amortized Cost	$ 198,069	173,912	171,842
Weighted-Average Yield	2.13%
Securities Held to Maturity
One year or less	$ 0
Over one year through five years	36,522
Over five years through ten years	53,391
Over ten years	0
Held-to-maturity Securities, Fair Value	89,913	64,671	57,655
Held-to-maturity Securities, Carrying Amount	$ 87,964	64,951	57,462
Weighted Average Yield	2.14%
Available for Sale Securities, Debt Maturities, Weighted-Average Mat	3 years 12 months 14 days
Held to Maturity Securities Debt Maturities-Weighted Aver Maturity	2 years 7 months 17 days
Residential Collateralized Mortgage-Backed Securities Issued by US Government Sponsored Enterprises
Securities Available for Sale
One year or less	$ 0
Over one year through five years	13,936
Over five years through ten years	10,705
Over ten years	2,328,377
Available-for-sale	2,353,018	2,128,320	1,949,389
Amortized Cost	$ 2,325,707	2,155,808	1,968,918
Weighted-Average Yield	2.01%
Securities Held to Maturity
One year or less	$ 0
Over one year through five years	0
Over five years through ten years	0
Over ten years	1,058,153
Held-to-maturity Securities, Fair Value	1,058,153	1,125,534	1,232,741
Held-to-maturity Securities, Carrying Amount	$ 1,060,496	1,161,340	1,267,321
Weighted Average Yield	1.59%
Available for Sale Securities, Debt Maturities, Weighted-Average Mat	3 years 8 months 9 days
Held to Maturity Securities Debt Maturities-Weighted Aver Maturity	3 years 8 months 9 days
Residential Collateralized Mortgage-Backed Securities Issued by Non-US Government Agency
Securities Available for Sale
One year or less	$ 0
Over one year through five years	3
Over five years through ten years	0
Over ten years	0
Available-for-sale	3	4	5
Amortized Cost	$ 3	4	5
Weighted-Average Yield	2.98%
Securities Held to Maturity
One year or less	$ 0
Over one year through five years	0
Over five years through ten years	0
Over ten years	0
Held-to-maturity Securities, Fair Value	0
Held-to-maturity Securities, Carrying Amount	$ 0
Weighted Average Yield	0.00%
Available for Sale Securities, Debt Maturities, Weighted-Average Mat	3 years 12 months 25 days
Commercial Collateralized Mortgage Backed Securities Issued by US Government Sponsored Enterprises
Securities Available for Sale
One year or less	$ 0
Over one year through five years	22,126
Over five years through ten years	103,837
Over ten years	272,648
Available-for-sale	398,611	216,319	228,438
Amortized Cost	$ 392,205	217,008	227,889
Weighted-Average Yield	2.18%
Securities Held to Maturity
One year or less	$ 0
Over one year through five years	81,237
Over five years through ten years	40,365
Over ten years	128,056
Held-to-maturity Securities, Fair Value	249,658	252,424	260,222
Held-to-maturity Securities, Carrying Amount	$ 246,509	255,359	263,741
Weighted Average Yield	1.77%
Available for Sale Securities, Debt Maturities, Weighted-Average Mat	3 years 9 months 30 days
Held to Maturity Securities Debt Maturities-Weighted Aver Maturity	4 years 1 month 27 days
Collateralized Loan Obligations
Securities Available for Sale
One year or less	$ 0
Over one year through five years	0
Over five years through ten years	218,344
Over ten years	73,450
Available-for-sale	291,794	289,411	258,081
Amortized Cost	$ 297,939	297,831	259,743
Weighted-Average Yield	3.08%
Securities Held to Maturity
One year or less	$ 0
Over one year through five years	0
Over five years through ten years	0
Over ten years	0
Held-to-maturity Securities, Fair Value	0
Held-to-maturity Securities, Carrying Amount	$ 0
Weighted Average Yield	0.00%
Available for Sale Securities, Debt Maturities, Weighted-Average Mat	6 years 5 months 24 days
Corporate debt securities
Securities Available for Sale
One year or less	$ 0
Over one year through five years	0
Over five years through ten years	0
Over ten years	51,107
Available-for-sale	51,107	52,229	53,450
Amortized Cost	$ 61,740	61,710	61,681
Weighted-Average Yield	1.37%
Securities Held to Maturity
One year or less	$ 22,443
Over one year through five years	64,836
Over five years through ten years	0
Over ten years	0
Held-to-maturity Securities, Fair Value	87,279	88,139	89,970
Held-to-maturity Securities, Carrying Amount	$ 86,305	87,797	89,275
Weighted Average Yield	2.30%
Available for Sale Securities, Debt Maturities, Weighted-Average Mat	11 years 12 months 22 days
Held to Maturity Securities Debt Maturities-Weighted Aver Maturity	2 years 3 months 12 days
Debt Securities
Securities Available for Sale
Available-for-sale	$ 4,315,900	3,964,914	3,835,685
Amortized Cost	$ 4,271,216	$ 4,002,961	$ 3,848,378

Investment Securities (Narrativ

Investment Securities (Narrative) (Details) $ in Thousands	3 Months Ended		12 Months Ended
	Jun. 30, 2016USD ($)state	Jun. 30, 2015USD ($)	Dec. 31, 2015USD ($)
Schedule of Investments [Line Items]
General obligation bonds, aggregate fair value	$ 10,000
Number of states with aggregate fair value of general obligation bonds greater than $10 million | state	11
Total number of states general obligation bonds are held | state	37
Available for sale securities, net unrealized losses	$ 76,300	$ 40,100	$ (53,000)
Unrealized gain (loss) on investments	$ (27,900)	(88,400)	(100,400)
Number of single issuer trust preferred securities with stated maturities	8
Percent of trust preferred securities included in fair value of entire investment portfolio	1.00%
Available-for-sale	$ 4,318,688	3,838,509	3,967,735
Other investment securities pledged	$ 3,200,000	3,200,000	2,900,000
Maximum portfolio concentration in municipal securities per corporate investment policy	20.00%
Amount of municipal securities with a combined individual state to total municipal outstanding equal to or less than, per corporate policy	25.00%
Collateralized Loan Obligations
Schedule of Investments [Line Items]
Available-for-sale	$ 291,794	$ 258,081	$ 289,411
Accumulated unrealized gain (loss), before tax	$ (6,100)

Loans (Schedule of Accounts, No

Loans (Schedule of Accounts, Notes, Loans and Financing Receivables) (Details) - USD ($) $ in Thousands	Jun. 30, 2016	Dec. 31, 2015	Jun. 30, 2015
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Commercial	$ 9,802,573	$ 9,814,088	$ 9,656,751
Loans and Leases Receivable, Gross, Consumer, Mortgage	1,054,781	1,048,621	1,049,731
Loans and Leases Receivable, Gross, Consumer, Installment, Other	3,849,321	3,565,798	3,381,706
Loans and Leases Receivable, Gross, Consumer, Home Equity	1,453,390	1,455,648	1,436,526
FDIC Indemnification Asset	8,555	9,947	11,820
Loans and Leases Receivable, Gross, Consumer, Revolving, Credit Card	174,986	182,843	168,576
Loans and Leases Receivable, Gross	16,343,606	16,076,945	15,705,110
Allowance for loan losses	(149,649)	(153,691)	(148,259)
Net loans	16,193,957	15,923,254	15,556,851
Originated Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Commercial	9,132,366	9,007,830	8,633,332
Loans and Leases Receivable, Gross, Consumer, Mortgage	728,534	689,045	653,143
Loans and Leases Receivable, Gross, Consumer, Installment, Other	3,353,084	2,990,349	2,720,059
Loans and Leases Receivable, Gross, Consumer, Home Equity	1,276,661	1,248,438	1,180,802
Loans and Leases Receivable, Gross, Consumer, Revolving, Credit Card	174,986	182,843	168,576
Loans and Leases Receivable, Gross	14,665,631	14,118,505	13,355,912
Allowance for loan losses	(105,175)	(105,135)	(101,682)
Net loans	14,560,456	14,013,370	13,254,230
Acquired Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Commercial	554,414	677,149	877,598
Loans and Leases Receivable, Gross, Consumer, Mortgage	292,877	324,008	358,559
Loans and Leases Receivable, Gross, Consumer, Installment, Other	494,429	573,372	659,348
Loans and Leases Receivable, Gross, Consumer, Home Equity	146,916	168,542	200,179
Loans and Leases Receivable, Gross	1,488,636	1,743,071	2,095,684
Allowance for loan losses	(4,256)	(3,877)	(4,950)
Net loans	1,484,380	1,739,194	2,090,734
Covered Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Commercial	115,793	129,109	145,821
Loans and Leases Receivable, Gross, Consumer, Mortgage	33,370	35,568	38,029
Loans and Leases Receivable, Gross, Consumer, Installment, Other	1,808	2,077	2,299
Loans and Leases Receivable, Gross, Consumer, Home Equity	29,813	38,668	55,545
FDIC Indemnification Asset	8,555	9,947	11,820
Loans and Leases Receivable, Gross, Carrying Amount, Covered	189,339	215,369	253,514
Loans and Leases Receivable, Allowance, Covered	(40,218)	(44,679)	(41,627)
Loans and Leases Receivable, Net Reported Amount, Covered	$ 149,121	$ 170,690	$ 211,887

Loans (Schedule of Acquired Imp

Loans (Schedule of Acquired Impaired Loans, Accretable Yield and Carrying Amount) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Covered impaired loan
Accretable Yield
Balance at beginning of period	$ 22,126	$ 29,867	$ 22,908	$ 37,511
Accretion	(2,231)	(4,100)	(4,528)	(9,667)
Net reclassifications from nonaccretable to accretable	699	2,136	2,372	2,080
Disposals	(371)	(1,753)	(529)	(3,774)
Balance at end of period	20,223	26,150	20,223	26,150
Carrying Amount of Loans
Balance at beginning of period	122,134	199,225	130,648	232,452
Accretion	2,231	4,100	4,528	9,667
Payments received, net	(5,604)	(45,517)	(16,415)	(84,311)
Balance at end of period	118,761	157,808	118,761	157,808
Acquired Impaired Loans
Accretable Yield
Balance at beginning of period	85,444	118,756	89,823	119,450
Accretion	(7,921)	(10,285)	(16,823)	(21,503)
Net reclassifications from nonaccretable to accretable	4,883	8,217	12,636	21,212
Disposals	(3,042)	(4,657)	(6,272)	(7,128)
Balance at end of period	79,364	112,031	79,364	112,031
Carrying Amount of Loans
Balance at beginning of period	257,152	388,313	284,709	423,209
Accretion	7,921	10,285	16,823	21,503
Payments received, net	(25,878)	(42,434)	(62,337)	(88,548)
Balance at end of period	$ 239,195	$ 356,164	$ 239,195	$ 356,164

Loans (Covered Loan Loss Share

Loans (Covered Loan Loss Share Receivable) (Details) - Loss Share Receivable - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Loss Share Receivable Rollforward [Roll Forward]
Balance at beginning of period	$ (9,436)	$ (20,005)	$ (9,947)	$ (22,033)
Amortization	(358)	(1,185)	(706)	(3,372)
Increase/(decrease) due to impairment (recapture) on FDIC acquired loans	(12)	1,819	257	6,046
FDIC reimbursement	(194)	(8,713)	(386)	(12,726)
FDIC acquired loans paid in full	(317)	(106)	(557)	(161)
Balance at end of the period	(8,555)	$ (11,820)	(8,555)	$ (11,820)
Single Family Loss Share Agreement
Loss Share Receivable Rollforward [Roll Forward]
Balance at end of the period	$ (8,600)		$ (8,600)

Loans (Schedules of Past Due Re

Loans (Schedules of Past Due Receivables) (Details) - USD ($) $ in Thousands	Jun. 30, 2016	Dec. 31, 2015	Jun. 30, 2015
Financing Receivable, Recorded Investment, Past Due [Line Items]
Consumer Loans Guaranteed by Government	$ 2,300	$ 2,300	$ 2,700
FDIC Indemnification Asset	8,555	9,947	11,820
Originated Loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Past Due	82,025	83,520	80,212
Financing Receivable, Recorded Investment, Current	14,583,606	14,034,985	13,275,700
Financing Receivable, Net	14,665,631	14,118,505	13,355,912
Financing Receivable, Recorded Investment, 90 Days Past Due and Still Accruing	8,008	8,022	8,009
Financing Receivable, Recorded Investment, Nonaccrual Status	84,297	44,105	55,142
Originated Loans | Commercial and Industrial
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Past Due	14,006	13,623	11,566
Financing Receivable, Recorded Investment, Current	5,868,988	5,779,785	5,459,797
Financing Receivable, Net	5,882,994	5,793,408	5,471,363
Financing Receivable, Recorded Investment, 90 Days Past Due and Still Accruing	1,062	236	0
Financing Receivable, Recorded Investment, Nonaccrual Status	43,887	23,123	29,241
Originated Loans | Real Estate Loan
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Past Due	16,824	15,140	6,657
Financing Receivable, Recorded Investment, Current	2,018,674	2,062,204	2,131,715
Financing Receivable, Net	2,035,498	2,077,344	2,138,372
Financing Receivable, Recorded Investment, 90 Days Past Due and Still Accruing	166	153	418
Financing Receivable, Recorded Investment, Nonaccrual Status	13,860	4,503	7,486
Originated Loans | Construction Loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Past Due	5,469	1,846
Financing Receivable, Recorded Investment, Current	699,871	643,491
Financing Receivable, Net	705,340	645,337	586,895
Financing Receivable, Recorded Investment, 90 Days Past Due and Still Accruing	0	0
Financing Receivable, Recorded Investment, Nonaccrual Status	9,195	482
Originated Loans | Installment
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Past Due	23,163	26,682	18,727
Financing Receivable, Recorded Investment, Current	3,329,921	2,963,667	2,701,332
Financing Receivable, Net	3,353,084	2,990,349	2,720,059
Financing Receivable, Recorded Investment, 90 Days Past Due and Still Accruing	3,453	3,519	3,386
Financing Receivable, Recorded Investment, Nonaccrual Status	3,506	2,178	2,903
Originated Loans | Commercial Construction Financing Receivable
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Past Due			483
Financing Receivable, Recorded Investment, Current			586,412
Financing Receivable, Net			586,895
Financing Receivable, Recorded Investment, 90 Days Past Due and Still Accruing			0
Financing Receivable, Recorded Investment, Nonaccrual Status			0
Originated Loans | Commercial Leases Financing Receivable
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Past Due	476	0	17,862
Financing Receivable, Recorded Investment, Current	508,058	491,741	418,840
Financing Receivable, Net	508,534	491,741	436,702
Financing Receivable, Recorded Investment, 90 Days Past Due and Still Accruing	476	0	0
Financing Receivable, Recorded Investment, Nonaccrual Status	0	0	1,162
Originated Loans | Home Equity Loan
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Past Due	4,098	4,343	4,020
Financing Receivable, Recorded Investment, Current	1,272,563	1,244,095	1,176,782
Financing Receivable, Net	1,276,661	1,248,438	1,180,802
Financing Receivable, Recorded Investment, 90 Days Past Due and Still Accruing	623	513	249
Financing Receivable, Recorded Investment, Nonaccrual Status	2,390	1,674	1,591
Originated Loans | Credit Card Receivable
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Past Due	2,175	2,575	1,575
Financing Receivable, Recorded Investment, Current	172,811	180,268	167,001
Financing Receivable, Net	174,986	182,843	168,576
Financing Receivable, Recorded Investment, 90 Days Past Due and Still Accruing	789	725	337
Financing Receivable, Recorded Investment, Nonaccrual Status	758	545	459
Originated Loans | Residential Mortgages
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Past Due	15,814	19,311	19,322
Financing Receivable, Recorded Investment, Current	712,720	669,734	633,821
Financing Receivable, Net	728,534	689,045	653,143
Financing Receivable, Recorded Investment, 90 Days Past Due and Still Accruing	1,439	2,876	3,619
Financing Receivable, Recorded Investment, Nonaccrual Status	10,701	11,600	12,300
Acquired Loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Past Due	25,191	45,707	44,905
Financing Receivable, Recorded Investment, Current	1,463,445	1,697,364	2,050,779
Financing Receivable, Net	1,488,636	1,743,071	2,095,684
Financing Receivable, Recorded Investment, 90 Days Past Due and Still Accruing	1,457	3,096	1,648
Financing Receivable, Recorded Investment, Nonaccrual Status	7,121	8,245	8,052
Acquired Loans | Commercial and Industrial
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Past Due	1,629	3,678	3,411
Financing Receivable, Recorded Investment, Current	179,874	236,467	334,012
Financing Receivable, Net	181,503	240,145	337,423
Financing Receivable, Recorded Investment, 90 Days Past Due and Still Accruing	0	13	0
Financing Receivable, Recorded Investment, Nonaccrual Status	865	782	661
Acquired Loans | Real Estate Loan
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Past Due	10,989	14,530	23,941
Financing Receivable, Recorded Investment, Current	357,811	416,361	510,004
Financing Receivable, Net	368,800	430,891	533,945
Financing Receivable, Recorded Investment, 90 Days Past Due and Still Accruing	0	522	0
Financing Receivable, Recorded Investment, Nonaccrual Status	4,482	4,948	5,545
Acquired Loans | Construction Loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Past Due	413	733
Financing Receivable, Recorded Investment, Current	3,698	5,380
Financing Receivable, Net	4,111	6,113	6,230
Financing Receivable, Recorded Investment, 90 Days Past Due and Still Accruing	0	0
Financing Receivable, Recorded Investment, Nonaccrual Status	0	0
Acquired Loans | Installment
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Past Due	4,876	7,362	6,111
Financing Receivable, Recorded Investment, Current	489,553	566,010	653,237
Financing Receivable, Net	494,429	573,372	659,348
Financing Receivable, Recorded Investment, 90 Days Past Due and Still Accruing	224	236	475
Financing Receivable, Recorded Investment, Nonaccrual Status	615	835	671
Acquired Loans | Commercial Construction Financing Receivable
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Past Due			694
Financing Receivable, Recorded Investment, Current			5,536
Financing Receivable, Net			6,230
Financing Receivable, Recorded Investment, 90 Days Past Due and Still Accruing			0
Financing Receivable, Recorded Investment, Nonaccrual Status			0
Acquired Loans | Commercial Leases Financing Receivable
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Net	0	0	0
Acquired Loans | Home Equity Loan
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Past Due	2,175	3,285	4,487
Financing Receivable, Recorded Investment, Current	144,741	165,257	195,692
Financing Receivable, Net	146,916	168,542	200,179
Financing Receivable, Recorded Investment, 90 Days Past Due and Still Accruing	587	644	762
Financing Receivable, Recorded Investment, Nonaccrual Status	235	514	246
Acquired Loans | Residential Mortgages
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Past Due	5,109	16,119	6,261
Financing Receivable, Recorded Investment, Current	287,768	307,889	352,298
Financing Receivable, Net	292,877	324,008	358,559
Financing Receivable, Recorded Investment, 90 Days Past Due and Still Accruing	646	1,681	411
Financing Receivable, Recorded Investment, Nonaccrual Status	924	1,166	929
Covered Loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Past Due	40,337	45,608	54,943
Financing Receivable, Recorded Investment, Current	140,447	159,814	186,751
Financing Receivable, Net	180,784	205,422	241,694
Covered Loans | Commercial and Industrial
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Past Due	1,326	1,054	2,916
Financing Receivable, Recorded Investment, Current	29,948	34,412	35,221
Financing Receivable, Net	31,274	35,466	38,137
Covered Loans | Real Estate Loan
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Past Due	25,735	29,151	34,699
Financing Receivable, Recorded Investment, Current	54,153	58,623	67,110
Financing Receivable, Net	79,888	87,774	101,809
Covered Loans | Construction Loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Past Due	3,512	3,761	3,701
Financing Receivable, Recorded Investment, Current	1,119	2,108	2,174
Financing Receivable, Net	4,631	5,869	5,875
Covered Loans | Installment
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Past Due	0	0	0
Financing Receivable, Recorded Investment, Current	1,808	2,077	2,299
Financing Receivable, Net	1,808	2,077	2,299
Covered Loans | Commercial Leases Financing Receivable
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Net	0	0	0
Covered Loans | Home Equity Loan
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Past Due	3,389	4,199	4,956
Financing Receivable, Recorded Investment, Current	26,424	34,469	50,589
Financing Receivable, Net	29,813	38,668	55,545
Covered Loans | Residential Mortgages
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Past Due	6,375	7,443	8,671
Financing Receivable, Recorded Investment, Current	26,995	28,125	29,358
Financing Receivable, Net	33,370	35,568	38,029
Financing Receivables, 30 to 59 Days Past Due | Originated Loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Past Due	33,465	51,358	52,205
Financing Receivables, 30 to 59 Days Past Due | Originated Loans | Commercial and Industrial
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Past Due	1,677	4,684	5,837
Financing Receivables, 30 to 59 Days Past Due | Originated Loans | Real Estate Loan
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Past Due	4,506	12,880	3,758
Financing Receivables, 30 to 59 Days Past Due | Originated Loans | Construction Loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Past Due	0	1,360	483
Financing Receivables, 30 to 59 Days Past Due | Originated Loans | Installment
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Past Due	15,662	17,934	11,526
Financing Receivables, 30 to 59 Days Past Due | Originated Loans | Commercial Leases Financing Receivable
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Past Due	0	0	17,862
Financing Receivables, 30 to 59 Days Past Due | Originated Loans | Home Equity Loan
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Past Due	1,245	1,952	2,268
Financing Receivables, 30 to 59 Days Past Due | Originated Loans | Credit Card Receivable
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Past Due	811	1,449	679
Financing Receivables, 30 to 59 Days Past Due | Originated Loans | Residential Mortgages
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Past Due	9,564	11,099	9,792
Financing Receivables, 30 to 59 Days Past Due | Acquired Loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Past Due	5,824	18,687	9,920
Financing Receivables, 30 to 59 Days Past Due | Acquired Loans | Commercial and Industrial
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Past Due	340	311	33
Financing Receivables, 30 to 59 Days Past Due | Acquired Loans | Real Estate Loan
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Past Due	602	3,192	3,353
Financing Receivables, 30 to 59 Days Past Due | Acquired Loans | Construction Loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Past Due	0	0
Financing Receivables, 30 to 59 Days Past Due | Acquired Loans | Installment
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Past Due	3,623	5,059	3,999
Financing Receivables, 30 to 59 Days Past Due | Acquired Loans | Commercial Construction Financing Receivable
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Past Due			0
Financing Receivables, 30 to 59 Days Past Due | Acquired Loans | Home Equity Loan
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Past Due	960	1,365	2,349
Financing Receivables, 30 to 59 Days Past Due | Acquired Loans | Residential Mortgages
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Past Due	299	8,760	186
Financing Receivables, 30 to 59 Days Past Due | Covered Loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Past Due	6,468	7,142	7,311
Financing Receivables, 30 to 59 Days Past Due | Covered Loans | Commercial and Industrial
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Past Due	0	0	0
Financing Receivables, 30 to 59 Days Past Due | Covered Loans | Real Estate Loan
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Past Due	0	296	664
Financing Receivables, 30 to 59 Days Past Due | Covered Loans | Construction Loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Past Due	0	0	0
Financing Receivables, 30 to 59 Days Past Due | Covered Loans | Installment
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Past Due	0	0	0
Financing Receivables, 30 to 59 Days Past Due | Covered Loans | Home Equity Loan
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Past Due	2,097	2,230	1,256
Financing Receivables, 30 to 59 Days Past Due | Covered Loans | Residential Mortgages
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Past Due	4,371	4,616	5,391
Financing Receivables, 60 to 89 Days Past Due | Originated Loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Past Due	9,046	7,869	8,071
Financing Receivables, 60 to 89 Days Past Due | Originated Loans | Commercial and Industrial
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Past Due	1,465	115	1,949
Financing Receivables, 60 to 89 Days Past Due | Originated Loans | Real Estate Loan
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Past Due	142	0	119
Financing Receivables, 60 to 89 Days Past Due | Originated Loans | Construction Loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Past Due	709	0	0
Financing Receivables, 60 to 89 Days Past Due | Originated Loans | Installment
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Past Due	3,496	4,828	3,010
Financing Receivables, 60 to 89 Days Past Due | Originated Loans | Commercial Leases Financing Receivable
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Past Due	0	0	0
Financing Receivables, 60 to 89 Days Past Due | Originated Loans | Home Equity Loan
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Past Due	713	913	720
Financing Receivables, 60 to 89 Days Past Due | Originated Loans | Credit Card Receivable
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Past Due	504	494	338
Financing Receivables, 60 to 89 Days Past Due | Originated Loans | Residential Mortgages
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Past Due	2,017	1,519	1,935
Financing Receivables, 60 to 89 Days Past Due | Acquired Loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Past Due	3,230	4,268	6,201
Financing Receivables, 60 to 89 Days Past Due | Acquired Loans | Commercial and Industrial
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Past Due	121	31	99
Financing Receivables, 60 to 89 Days Past Due | Acquired Loans | Real Estate Loan
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Past Due	896	1,681	3,115
Financing Receivables, 60 to 89 Days Past Due | Acquired Loans | Construction Loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Past Due	0	0
Financing Receivables, 60 to 89 Days Past Due | Acquired Loans | Installment
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Past Due	767	1,329	1,029
Financing Receivables, 60 to 89 Days Past Due | Acquired Loans | Commercial Construction Financing Receivable
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Past Due			0
Financing Receivables, 60 to 89 Days Past Due | Acquired Loans | Home Equity Loan
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Past Due	503	660	785
Financing Receivables, 60 to 89 Days Past Due | Acquired Loans | Residential Mortgages
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Past Due	943	567	1,173
Financing Receivables, 60 to 89 Days Past Due | Covered Loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Past Due	1,362	578	2,524
Financing Receivables, 60 to 89 Days Past Due | Covered Loans | Commercial and Industrial
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Past Due	0	0	0
Financing Receivables, 60 to 89 Days Past Due | Covered Loans | Real Estate Loan
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Past Due	804	354	1,959
Financing Receivables, 60 to 89 Days Past Due | Covered Loans | Construction Loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Past Due	0	0	0
Financing Receivables, 60 to 89 Days Past Due | Covered Loans | Installment
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Past Due	0	0	0
Financing Receivables, 60 to 89 Days Past Due | Covered Loans | Home Equity Loan
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Past Due	354	52	246
Financing Receivables, 60 to 89 Days Past Due | Covered Loans | Residential Mortgages
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Past Due	204	172	319
Financing Receivables, Equal to Greater than 90 Days Past Due | Originated Loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Past Due	39,514	24,293	19,936
Financing Receivables, Equal to Greater than 90 Days Past Due | Originated Loans | Commercial and Industrial
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Past Due	10,864	8,824	3,780
Financing Receivables, Equal to Greater than 90 Days Past Due | Originated Loans | Real Estate Loan
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Past Due	12,176	2,260	2,780
Financing Receivables, Equal to Greater than 90 Days Past Due | Originated Loans | Construction Loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Past Due	4,760	486	0
Financing Receivables, Equal to Greater than 90 Days Past Due | Originated Loans | Installment
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Past Due	4,005	3,920	4,191
Financing Receivables, Equal to Greater than 90 Days Past Due | Originated Loans | Commercial Leases Financing Receivable
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Past Due	476	0	0
Financing Receivables, Equal to Greater than 90 Days Past Due | Originated Loans | Home Equity Loan
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Past Due	2,140	1,478	1,032
Financing Receivables, Equal to Greater than 90 Days Past Due | Originated Loans | Credit Card Receivable
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Past Due	860	632	558
Financing Receivables, Equal to Greater than 90 Days Past Due | Originated Loans | Residential Mortgages
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Past Due	4,233	6,693	7,595
Financing Receivables, Equal to Greater than 90 Days Past Due | Acquired Loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Past Due	16,137	22,752	28,784
Financing Receivables, Equal to Greater than 90 Days Past Due | Acquired Loans | Commercial and Industrial
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Past Due	1,168	3,336	3,279
Financing Receivables, Equal to Greater than 90 Days Past Due | Acquired Loans | Real Estate Loan
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Past Due	9,491	9,657	17,473
Financing Receivables, Equal to Greater than 90 Days Past Due | Acquired Loans | Construction Loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Past Due	413	733
Financing Receivables, Equal to Greater than 90 Days Past Due | Acquired Loans | Installment
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Past Due	486	974	1,083
Financing Receivables, Equal to Greater than 90 Days Past Due | Acquired Loans | Commercial Construction Financing Receivable
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Past Due			694
Financing Receivables, Equal to Greater than 90 Days Past Due | Acquired Loans | Home Equity Loan
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Past Due	712	1,260	1,353
Financing Receivables, Equal to Greater than 90 Days Past Due | Acquired Loans | Residential Mortgages
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Past Due	3,867	6,792	4,902
Financing Receivables, Equal to Greater than 90 Days Past Due | Covered Loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Past Due	32,507	37,888	45,108
Financing Receivables, Equal to Greater than 90 Days Past Due | Covered Loans | Commercial and Industrial
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Past Due	1,326	1,054	2,916
Financing Receivables, Equal to Greater than 90 Days Past Due | Covered Loans | Real Estate Loan
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Past Due	24,931	28,501	32,076
Financing Receivables, Equal to Greater than 90 Days Past Due | Covered Loans | Construction Loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Past Due	3,512	3,761	3,701
Financing Receivables, Equal to Greater than 90 Days Past Due | Covered Loans | Installment
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Past Due	0	0	0
Financing Receivables, Equal to Greater than 90 Days Past Due | Covered Loans | Home Equity Loan
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Past Due	938	1,917	3,454
Financing Receivables, Equal to Greater than 90 Days Past Due | Covered Loans | Residential Mortgages
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Past Due	$ 1,800	$ 2,655	$ 2,961

Loans (Financing Receivables Cr

Loans (Financing Receivables Credit Quality Indicators) (Details) - USD ($) $ in Thousands	Jun. 30, 2016	Dec. 31, 2015	Jun. 30, 2015
Originated Loans
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Net	$ 14,665,631	$ 14,118,505	$ 13,355,912
Originated Loans | Commercial and Industrial
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Net	5,882,994	5,793,408	5,471,363
Originated Loans | Real Estate Loan
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Net	2,035,498	2,077,344	2,138,372
Originated Loans | Construction Loans
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Net	705,340	645,337	586,895
Originated Loans | Commercial Leases Financing Receivable
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Net	508,534	491,741	436,702
Originated Loans | Commercial
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Net	9,132,366	9,007,830	8,633,332
Originated Loans | Grade One | Commercial and Industrial
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Net	75,818	60,440	65,856
Originated Loans | Grade One | Real Estate Loan
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Net	742	773	807
Originated Loans | Grade One | Construction Loans
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Net	0	0	0
Originated Loans | Grade One | Commercial Leases Financing Receivable
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Net	12,001	12,732	14,688
Originated Loans | Grade One | Commercial
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Net	88,561	73,945	81,351
Originated Loans | Grade Two | Commercial and Industrial
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Net	416,677	353,581	206,384
Originated Loans | Grade Two | Real Estate Loan
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Net	806	831	1,166
Originated Loans | Grade Two | Construction Loans
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Net	0	0	0
Originated Loans | Grade Two | Commercial Leases Financing Receivable
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Net	49,953	69,258	29,564
Originated Loans | Grade Two | Commercial
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Net	467,436	423,670	237,114
Originated Loans | Grade Three | Commercial and Industrial
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Net	1,267,423	1,371,850	1,417,295
Originated Loans | Grade Three | Real Estate Loan
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Net	294,396	319,987	367,457
Originated Loans | Grade Three | Construction Loans
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Net	46,114	59,182	55,889
Originated Loans | Grade Three | Commercial Leases Financing Receivable
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Net	87,346	49,956	65,664
Originated Loans | Grade Three | Commercial
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Net	1,695,279	1,800,975	1,906,305
Originated Loans | Grade Four | Commercial and Industrial
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Net	3,886,039	3,756,333	3,567,387
Originated Loans | Grade Four | Real Estate Loan
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Net	1,697,194	1,697,261	1,715,998
Originated Loans | Grade Four | Construction Loans
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Net	609,659	569,098	529,517
Originated Loans | Grade Four | Commercial Leases Financing Receivable
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Net	325,346	344,763	321,268
Originated Loans | Grade Four | Commercial
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Net	6,518,238	6,367,455	6,134,170
Originated Loans | Grade Five | Commercial and Industrial
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Net	73,989	124,140	98,137
Originated Loans | Grade Five | Real Estate Loan
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Net	13,929	18,388	25,466
Originated Loans | Grade Five | Construction Loans
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Net	31,744	7,193	360
Originated Loans | Grade Five | Commercial Leases Financing Receivable
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Net	22,830	7,858	2,956
Originated Loans | Grade Five | Commercial
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Net	142,492	157,579	126,919
Originated Loans | Grade Six | Commercial and Industrial
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Net	154,707	124,483	112,661
Originated Loans | Grade Six | Real Estate Loan
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Net	28,431	40,105	27,478
Originated Loans | Grade Six | Construction Loans
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Net	17,823	9,864	1,129
Originated Loans | Grade Six | Commercial Leases Financing Receivable
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Net	11,058	7,174	2,562
Originated Loans | Grade Six | Commercial
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Net	212,019	181,626	143,830
Originated Loans | Grade Seven | Commercial and Industrial
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Net	8,341	2,581	3,643
Originated Loans | Grade Seven | Real Estate Loan
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Net	0	(1)	0
Originated Loans | Grade Seven | Construction Loans
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Net	0	0	0
Originated Loans | Grade Seven | Commercial Leases Financing Receivable
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Net	0	0	0
Originated Loans | Grade Seven | Commercial
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Net	8,341	2,580	3,643
Acquired Loans
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Net	1,488,636	1,743,071	2,095,684
Acquired Loans | Commercial and Industrial
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Net	181,503	240,145	337,423
Acquired Loans | Real Estate Loan
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Net	368,800	430,891	533,945
Acquired Loans | Construction Loans
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Net	4,111	6,113	6,230
Acquired Loans | Commercial Leases Financing Receivable
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Net	0	0	0
Acquired Loans | Commercial
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Net	554,414	677,149	877,598
Acquired Loans | Grade One | Commercial and Industrial
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Net	0	346	1,061
Acquired Loans | Grade One | Real Estate Loan
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Net	0	0	0
Acquired Loans | Grade One | Construction Loans
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Net	0	0	0
Acquired Loans | Grade One | Commercial Leases Financing Receivable
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Net	0	0	0
Acquired Loans | Grade One | Commercial
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Net	0	346	1,061
Acquired Loans | Grade Two | Commercial and Industrial
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Net	0	0	0
Acquired Loans | Grade Two | Real Estate Loan
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Net	0	0	0
Acquired Loans | Grade Two | Construction Loans
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Net	0	0	0
Acquired Loans | Grade Two | Commercial Leases Financing Receivable
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Net	0	0	0
Acquired Loans | Grade Two | Commercial
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Net	0	0	0
Acquired Loans | Grade Three | Commercial and Industrial
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Net	5,994	15,548	17,338
Acquired Loans | Grade Three | Real Estate Loan
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Net	24,244	27,387	27,190
Acquired Loans | Grade Three | Construction Loans
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Net	0	0	0
Acquired Loans | Grade Three | Commercial Leases Financing Receivable
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Net	0	0	0
Acquired Loans | Grade Three | Commercial
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Net	30,238	42,935	44,528
Acquired Loans | Grade Four | Commercial and Industrial
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Net	140,944	200,736	289,027
Acquired Loans | Grade Four | Real Estate Loan
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Net	303,228	361,518	453,830
Acquired Loans | Grade Four | Construction Loans
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Net	3,698	5,380	5,536
Acquired Loans | Grade Four | Commercial Leases Financing Receivable
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Net	0	0	0
Acquired Loans | Grade Four | Commercial
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Net	447,870	567,634	748,393
Acquired Loans | Grade Five | Commercial and Industrial
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Net	27,053	11,735	13,283
Acquired Loans | Grade Five | Real Estate Loan
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Net	11,607	12,546	16,815
Acquired Loans | Grade Five | Construction Loans
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Net	0	0	0
Acquired Loans | Grade Five | Commercial Leases Financing Receivable
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Net	0	0	0
Acquired Loans | Grade Five | Commercial
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Net	38,660	24,281	30,098
Acquired Loans | Grade Six | Commercial and Industrial
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Net	7,512	11,780	16,714
Acquired Loans | Grade Six | Real Estate Loan
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Net	29,721	29,440	36,110
Acquired Loans | Grade Six | Construction Loans
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Net	413	733	694
Acquired Loans | Grade Six | Commercial Leases Financing Receivable
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Net	0	0	0
Acquired Loans | Grade Six | Commercial
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Net	37,646	41,953	53,518
Acquired Loans | Grade Seven | Commercial and Industrial
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Net	0	0	0
Acquired Loans | Grade Seven | Real Estate Loan
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Net	0	0	0
Acquired Loans | Grade Seven | Construction Loans
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Net	0	0	0
Acquired Loans | Grade Seven | Commercial Leases Financing Receivable
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Net	0	0	0
Acquired Loans | Grade Seven | Commercial
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Net	0	0	0
Covered Loans
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Net	180,784	205,422	241,694
Covered Loans | Commercial and Industrial
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Net	31,274	35,466	38,137
Covered Loans | Real Estate Loan
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Net	79,888	87,774	101,809
Covered Loans | Construction Loans
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Net	4,631	5,869	5,875
Covered Loans | Commercial Leases Financing Receivable
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Net	0	0	0
Covered Loans | Commercial
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Net	115,793	129,109	145,821
Covered Loans | Grade One | Commercial and Industrial
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Net	0	0	0
Covered Loans | Grade One | Real Estate Loan
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Net	0	0	0
Covered Loans | Grade One | Construction Loans
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Net	0	0	0
Covered Loans | Grade One | Commercial Leases Financing Receivable
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Net	0	0	0
Covered Loans | Grade One | Commercial
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Net	0	0	0
Covered Loans | Grade Two | Commercial and Industrial
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Net	0	1,072	1,129
Covered Loans | Grade Two | Real Estate Loan
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Net	0	0	0
Covered Loans | Grade Two | Construction Loans
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Net	0	0	0
Covered Loans | Grade Two | Commercial Leases Financing Receivable
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Net	0	0	0
Covered Loans | Grade Two | Commercial
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Net	0	1,072	1,129
Covered Loans | Grade Three | Commercial and Industrial
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Net	0	0	0
Covered Loans | Grade Three | Real Estate Loan
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Net	7,040	7,004	0
Covered Loans | Grade Three | Construction Loans
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Net	0	0	0
Covered Loans | Grade Three | Commercial Leases Financing Receivable
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Net	0	0	0
Covered Loans | Grade Three | Commercial
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Net	7,040	7,004	0
Covered Loans | Grade Four | Commercial and Industrial
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Net	27,834	31,637	33,992
Covered Loans | Grade Four | Real Estate Loan
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Net	45,520	49,917	65,906
Covered Loans | Grade Four | Construction Loans
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Net	0	819	817
Covered Loans | Grade Four | Commercial Leases Financing Receivable
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Net	0	0	0
Covered Loans | Grade Four | Commercial
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Net	73,354	82,373	100,715
Covered Loans | Grade Five | Commercial and Industrial
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Net	0	295	0
Covered Loans | Grade Five | Real Estate Loan
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Net	0	0	625
Covered Loans | Grade Five | Construction Loans
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Net	0	0	0
Covered Loans | Grade Five | Commercial Leases Financing Receivable
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Net	0	0	0
Covered Loans | Grade Five | Commercial
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Net	0	295	625
Covered Loans | Grade Six | Commercial and Industrial
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Net	3,440	2,462	3,016
Covered Loans | Grade Six | Real Estate Loan
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Net	27,328	30,853	35,278
Covered Loans | Grade Six | Construction Loans
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Net	4,631	5,050	5,058
Covered Loans | Grade Six | Commercial Leases Financing Receivable
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Net	0	0	0
Covered Loans | Grade Six | Commercial
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Net	35,399	38,365	43,352
Covered Loans | Grade Seven | Commercial and Industrial
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Net	0	0	0
Covered Loans | Grade Seven | Real Estate Loan
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Net	0	0	0
Covered Loans | Grade Seven | Construction Loans
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Net	0	0	0
Covered Loans | Grade Seven | Commercial Leases Financing Receivable
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Net	0	0	0
Covered Loans | Grade Seven | Commercial
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Net	$ 0	$ 0	$ 0

Loans (Narrative) (Details)

Loans (Narrative) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015	Dec. 31, 2015
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Commercial	$ 9,802,573	$ 9,656,751	$ 9,802,573	$ 9,656,751	$ 9,814,088
Loans and Leases Receivable, Gross	16,343,606	15,705,110	$ 16,343,606	15,705,110	16,076,945
Time period for non-payment of loans that are placed on non-accrual status			90 days
Unamortized Loan Commitment and Origination Fees and Unamortized Discounts or Premiums	(3,300)	(5,400)	$ (3,300)	(5,400)	(4,100)
Days past due for nonaccrual status credit card loans			120 days
Acquired Impaired Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Outstanding Balance	340,900		$ 340,900		504,700
Net reclassifications from nonaccretable to accretable	4,883	8,217	12,636	21,212
Covered impaired loan
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount, Covered	301,200		301,200		351,100
Acquired Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Commercial	554,414	877,598	554,414	877,598	677,149
Loans and Leases Receivable, Gross	1,488,636	2,095,684	1,488,636	2,095,684	$ 1,743,071
Covered impaired loan
Accounts, Notes, Loans and Financing Receivable [Line Items]
Net reclassifications from nonaccretable to accretable	699	$ 2,136	2,372	$ 2,080
George Washington and Midwest Acquisition | Non-Single Family Loss Share Agreement
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross	115,800		115,800
George Washington and Midwest Acquisition | Single Family Loss Share Agreement
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount, Covered	$ 65,000		$ 65,000

Allowance for Loan Losses (Sche

Allowance for Loan Losses (Schedule of Credit Losses Related to Originated Financing Receivables, Current) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Dec. 31, 2015	Jun. 30, 2015
Financing Receivable, Allowance for Credit Losses [Line Items]
Provision/ (recapture) for loan losses	$ (6,391)	$ (8,966)	$ (14,200)	$ (17,214)
Originated Loans
Financing Receivable, Allowance for Credit Losses [Line Items]
Balance at beginning of the period	102,915	97,545	105,135	95,696
Financing Receivable, Allowance for Credit Losses, Write-downs	(10,798)	(11,298)	(23,815)	(19,865)
Recoveries	6,111	4,626	11,497	9,006
Provision/ (recapture) for loan losses	6,947	10,809	12,357	16,845
Balance at end of the period	105,175	101,682	105,175	101,682
Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment					$ 13,454	$ 14,349	$ 11,626
Financing Receivable, Allowance for Credit Losses, Collectively Evaluated for Impairment					91,721	90,786	90,056
Financing Receivable, Allowance for Credit Losses	102,915	97,545	105,135	95,696	105,175	105,135	101,682
Financing Receivable, Individually Evaluated for Impairment					166,968	129,038	124,035
Financing Receivable, Collectively Evaluated for Impairment					14,498,663	13,989,467	13,231,877
Financing Receivable, Net					14,665,631	14,118,505	13,355,912
Originated Loans | Commercial and Industrial
Financing Receivable, Allowance for Credit Losses [Line Items]
Balance at beginning of the period	44,489	39,838	44,760	37,375
Financing Receivable, Allowance for Credit Losses, Write-downs	(2,593)	(3,247)	(5,803)	(3,757)
Recoveries	1,335	453	1,867	794
Provision/ (recapture) for loan losses	1,859	5,832	4,266	8,464
Balance at end of the period	45,090	42,876	45,090	42,876
Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment					10,447	11,837	9,117
Financing Receivable, Allowance for Credit Losses, Collectively Evaluated for Impairment					34,643	32,923	33,759
Financing Receivable, Allowance for Credit Losses	44,489	39,838	44,760	37,375	45,090	44,760	42,876
Financing Receivable, Individually Evaluated for Impairment					62,707	43,818	45,969
Financing Receivable, Collectively Evaluated for Impairment					5,820,287	5,749,590	5,425,394
Financing Receivable, Net					5,882,994	5,793,408	5,471,363
Originated Loans | Commercial Real Estate
Financing Receivable, Allowance for Credit Losses [Line Items]
Balance at beginning of the period	7,244	8,813	9,631	10,492
Financing Receivable, Allowance for Credit Losses, Write-downs	(111)	(408)	(220)	(623)
Recoveries	207	1	232	1
Provision/ (recapture) for loan losses	(1,468)	94	(3,771)	(1,370)
Balance at end of the period	5,872	8,500	5,872	8,500
Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment					507	128	151
Financing Receivable, Allowance for Credit Losses, Collectively Evaluated for Impairment					5,365	9,503	8,349
Financing Receivable, Allowance for Credit Losses	7,244	8,813	9,631	10,492	5,872	9,631	8,500
Financing Receivable, Individually Evaluated for Impairment					29,539	16,614	12,072
Financing Receivable, Collectively Evaluated for Impairment					2,005,959	2,060,730	2,126,300
Financing Receivable, Net					2,035,498	2,077,344	2,138,372
Originated Loans | Construction Loans
Financing Receivable, Allowance for Credit Losses [Line Items]
Balance at beginning of the period	1,537	1,752	1,594	2,202
Financing Receivable, Allowance for Credit Losses, Write-downs	0	0	0	0
Recoveries	2	39	4	40
Provision/ (recapture) for loan losses	1,028	(251)	969	(702)
Balance at end of the period	2,567	1,540	2,567	1,540
Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment					0	0	0
Financing Receivable, Allowance for Credit Losses, Collectively Evaluated for Impairment					2,567	1,594	1,540
Financing Receivable, Allowance for Credit Losses	1,537	1,752	1,594	2,202	2,567	1,594	1,540
Financing Receivable, Individually Evaluated for Impairment					512	0	0
Financing Receivable, Collectively Evaluated for Impairment					704,828	645,337	586,895
Financing Receivable, Net					705,340	645,337	586,895
Originated Loans | Leases
Financing Receivable, Allowance for Credit Losses [Line Items]
Balance at beginning of the period	1,499	629	1,313	674
Financing Receivable, Allowance for Credit Losses, Write-downs	0	0	0	0
Recoveries	29	3	49	7
Provision/ (recapture) for loan losses	822	(13)	988	(62)
Balance at end of the period	2,350	619	2,350	619
Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment					0	0	0
Financing Receivable, Allowance for Credit Losses, Collectively Evaluated for Impairment					2,350	1,313	619
Financing Receivable, Allowance for Credit Losses	1,499	629	1,313	674	2,350	1,313	619
Financing Receivable, Individually Evaluated for Impairment					0	0	1,162
Financing Receivable, Collectively Evaluated for Impairment					508,534	491,741	435,540
Financing Receivable, Net					508,534	491,741	436,702
Originated Loans | Installment
Financing Receivable, Allowance for Credit Losses [Line Items]
Balance at beginning of the period	14,664	13,358	14,183	12,918
Financing Receivable, Allowance for Credit Losses, Write-downs	(5,418)	(5,090)	(12,186)	(10,145)
Recoveries	3,573	2,844	7,379	5,864
Provision/ (recapture) for loan losses	3,960	3,798	7,403	6,273
Balance at end of the period	16,779	14,910	16,779	14,910
Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment					1,149	1,009	1,001
Financing Receivable, Allowance for Credit Losses, Collectively Evaluated for Impairment					15,630	13,174	13,909
Financing Receivable, Allowance for Credit Losses	14,664	13,358	14,183	12,918	16,779	14,183	14,910
Financing Receivable, Individually Evaluated for Impairment					42,272	36,904	31,927
Financing Receivable, Collectively Evaluated for Impairment					3,310,812	2,953,445	2,688,132
Financing Receivable, Net					3,353,084	2,990,349	2,720,059
Originated Loans | Home Equity Line of Credit
Financing Receivable, Allowance for Credit Losses [Line Items]
Balance at beginning of the period	19,528	19,433	20,094	19,324
Financing Receivable, Allowance for Credit Losses, Write-downs	(937)	(971)	(1,964)	(1,882)
Recoveries	499	839	1,123	1,452
Provision/ (recapture) for loan losses	698	738	535	1,145
Balance at end of the period	19,788	20,039	19,788	20,039
Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment						188	217
Financing Receivable, Allowance for Credit Losses, Collectively Evaluated for Impairment					19,619	19,906	19,822
Financing Receivable, Allowance for Credit Losses	19,528	19,433	20,094	19,324	19,788	20,094	20,039
Financing Receivable, Individually Evaluated for Impairment					7,874	7,080	7,421
Financing Receivable, Collectively Evaluated for Impairment					1,268,787	1,241,358	1,173,381
Financing Receivable, Net					1,276,661	1,248,438	1,180,802
Originated Loans | Credit Card Receivable
Financing Receivable, Allowance for Credit Losses [Line Items]
Balance at beginning of the period	8,591	7,801	8,831	7,966
Financing Receivable, Allowance for Credit Losses, Write-downs	(1,031)	(1,209)	(2,484)	(2,661)
Recoveries	421	358	778	724
Provision/ (recapture) for loan losses	(831)	868	25	1,789
Balance at end of the period	7,150	7,818	7,150	7,818
Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment					201	243	250
Financing Receivable, Allowance for Credit Losses, Collectively Evaluated for Impairment					6,949	8,588	7,568
Financing Receivable, Allowance for Credit Losses	8,591	7,801	8,831	7,966	7,150	8,831	7,818
Financing Receivable, Individually Evaluated for Impairment					679	717	787
Financing Receivable, Collectively Evaluated for Impairment					174,307	182,126	167,789
Financing Receivable, Net					174,986	182,843	168,576
Originated Loans | Residential Mortgages
Financing Receivable, Allowance for Credit Losses [Line Items]
Balance at beginning of the period	5,363	5,921	4,729	4,745
Financing Receivable, Allowance for Credit Losses, Write-downs	(708)	(373)	(1,158)	(797)
Recoveries	45	89	65	124
Provision/ (recapture) for loan losses	879	(257)	1,942	1,308
Balance at end of the period	5,579	5,380	5,579	5,380
Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment					981	944	890
Financing Receivable, Allowance for Credit Losses, Collectively Evaluated for Impairment					4,598	3,785	4,490
Financing Receivable, Allowance for Credit Losses	$ 5,363	$ 5,921	$ 4,729	$ 4,745	5,579	4,729	5,380
Financing Receivable, Individually Evaluated for Impairment					23,385	23,905	24,697
Financing Receivable, Collectively Evaluated for Impairment					705,149	665,140	628,446
Financing Receivable, Net					$ 728,534	$ 689,045	$ 653,143

Allowance for Loan Losses (Sc51

Allowance for Loan Losses (Schedule of Credit Losses Related to Acquired Financing Receivables, Current) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Provision/(recapture) for loan losses	$ (6,391)	$ (8,966)	$ (14,200)	$ (17,214)
Acquired Loans
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Balance at beginning of the period	4,423	7,493	3,877	7,457
Charge-offs	(19)	0	(19)	0
Recoveries		0	0	0
Provision/(recapture) for loan losses	(148)	(2,543)	398	(2,507)
Balance at end of the period	$ 4,256	$ 4,950	$ 4,256	$ 4,950

Allowance for Loan Losses (Sc52

Allowance for Loan Losses (Schedule of Credit Losses Related to Covered Financing Receivables, Current Period) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Allowance for Loan and Lease Losses [Roll Forward]
Provision/(recapture) for loan losses	$ 6,391	$ 8,966	$ 14,200	$ 17,214
Covered impaired loan
Allowance for Loan and Lease Losses [Roll Forward]
Balance at beginning of the period	44,599	41,514	44,679	40,496
Net provision/(recapture) of loan losses before benefit attributable to FDIC loss share agreements	(227)	928	1,310	5,153
Net (benefit)/recapture attributable to FDIC loss share agreements	12	(1,819)	(257)	(6,046)
Provision/(recapture) for loan losses	(215)	(891)	1,053	(893)
Increase/(decrease) in loss share receivable	(12)	1,819	257	6,046
Charge-offs	(4,154)	(815)	(5,771)	(4,022)
Balance at end of the period	$ 40,218	$ 41,627	$ 40,218	$ 41,627

Allowance for Loan Losses (Impa

Allowance for Loan Losses (Impaired Financing Receivables) (Details) - USD ($) $ in Thousands	6 Months Ended		12 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Dec. 31, 2015
Financing Receivable, Impaired [Line Items]
Impaired Financing Receivable, Related Allowance			$ 11,128
Commercial and Industrial
Financing Receivable, Impaired [Line Items]
Impaired Financing Receivable, Related Allowance			6,052
Commercial Real Estate
Financing Receivable, Impaired [Line Items]
Impaired Financing Receivable, Related Allowance			2,554
Construction Loans
Financing Receivable, Impaired [Line Items]
Impaired Financing Receivable, Related Allowance			0
Home equity lines
Financing Receivable, Impaired [Line Items]
Impaired Financing Receivable, Related Allowance			281
Installment
Financing Receivable, Impaired [Line Items]
Impaired Financing Receivable, Related Allowance			1,054
Credit Card Receivable
Financing Receivable, Impaired [Line Items]
Impaired Financing Receivable, Related Allowance			243
Residential Mortgages
Financing Receivable, Impaired [Line Items]
Impaired Financing Receivable, Related Allowance			944
Originated Loans
Financing Receivable, Impaired [Line Items]
Impaired Financing Receivable, with No Related Allowance, Recorded Investment	$ 61,085		50,141
Impaired Financing Receivable, with No Related Allowance, Unpaid Principal Balance	65,881		57,809
Impaired Financing Receivable, with No Related Allowance, Average Recorded Investment	60,272		55,051
Impaired Financing Receivable, with Related Allowance, Recorded Investment	105,883		78,897
Impaired Financing Receivable, with Related Allowance, Unpaid Principal Balance	114,922		85,211
Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment	13,454	$ 11,626	14,349
Impaired Financing Receivable, with Related Allowance, Average Recorded Investment	78,480		62,887
Impaired Financing Receivable, Recorded Investment	166,968	124,035	129,038
Impaired Financing Receivable, Unpaid Principal Balance	180,803	143,140	143,020
Impaired Financing Receivable, Related Allowance	13,454	11,626	14,349
Impaired Financing Receivable, Average Recorded Investment	138,752	109,353	117,938
Originated Loans | Commercial and Industrial
Financing Receivable, Impaired [Line Items]
Impaired Financing Receivable, with No Related Allowance, Recorded Investment	19,489	28,076	21,066
Impaired Financing Receivable, with No Related Allowance, Unpaid Principal Balance	22,663	37,358	23,854
Impaired Financing Receivable, with No Related Allowance, Average Recorded Investment	29,022	27,238	27,215
Impaired Financing Receivable, with Related Allowance, Recorded Investment	43,218	17,893	22,752
Impaired Financing Receivable, with Related Allowance, Unpaid Principal Balance	51,933	18,062	28,881
Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment	10,447	9,117	11,837
Impaired Financing Receivable, with Related Allowance, Average Recorded Investment	21,305	7,199	11,284
Originated Loans | Commercial Real Estate
Financing Receivable, Impaired [Line Items]
Impaired Financing Receivable, with No Related Allowance, Recorded Investment	26,058	11,482	15,465
Impaired Financing Receivable, with No Related Allowance, Unpaid Principal Balance	24,696	17,585	17,456
Impaired Financing Receivable, with No Related Allowance, Average Recorded Investment	17,119	12,983	13,031
Impaired Financing Receivable, with Related Allowance, Recorded Investment	3,481	590	1,149
Impaired Financing Receivable, with Related Allowance, Unpaid Principal Balance	3,563	593	1,173
Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment	507	151	128
Impaired Financing Receivable, with Related Allowance, Average Recorded Investment	1,999	600	3,037
Originated Loans | Construction Loans
Financing Receivable, Impaired [Line Items]
Impaired Financing Receivable, with No Related Allowance, Recorded Investment	512	0	0
Impaired Financing Receivable, with No Related Allowance, Unpaid Principal Balance	512	0	0
Impaired Financing Receivable, with No Related Allowance, Average Recorded Investment	102	0	0
Impaired Financing Receivable, with Related Allowance, Recorded Investment	0	0	0
Impaired Financing Receivable, with Related Allowance, Unpaid Principal Balance	0	0	0
Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment	0	0	0
Impaired Financing Receivable, with Related Allowance, Average Recorded Investment	0	0	0
Originated Loans | Leases
Financing Receivable, Impaired [Line Items]
Impaired Financing Receivable, with No Related Allowance, Recorded Investment	0	1,162
Impaired Financing Receivable, with No Related Allowance, Unpaid Principal Balance	0	1,162
Impaired Financing Receivable, with No Related Allowance, Average Recorded Investment	0	598
Impaired Financing Receivable, with Related Allowance, Recorded Investment	0
Impaired Financing Receivable, with Related Allowance, Unpaid Principal Balance	0
Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment	0	0	0
Impaired Financing Receivable, with Related Allowance, Average Recorded Investment	0
Originated Loans | Home equity lines
Financing Receivable, Impaired [Line Items]
Impaired Financing Receivable, with No Related Allowance, Recorded Investment		884
Impaired Financing Receivable, with No Related Allowance, Unpaid Principal Balance		1,132
Impaired Financing Receivable, with No Related Allowance, Average Recorded Investment		906
Impaired Financing Receivable, with Related Allowance, Recorded Investment		6,537
Impaired Financing Receivable, with Related Allowance, Unpaid Principal Balance		6,537
Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment	169	217
Impaired Financing Receivable, with Related Allowance, Average Recorded Investment		6,684
Originated Loans | Installment
Financing Receivable, Impaired [Line Items]
Impaired Financing Receivable, with No Related Allowance, Recorded Investment	2,366	1,678	1,369
Impaired Financing Receivable, with No Related Allowance, Unpaid Principal Balance	2,697	2,183	1,658
Impaired Financing Receivable, with No Related Allowance, Average Recorded Investment	1,636	1,753	1,807
Impaired Financing Receivable, with Related Allowance, Recorded Investment	39,906	30,249	35,535
Impaired Financing Receivable, with Related Allowance, Unpaid Principal Balance	40,033	30,302	35,592
Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment	1,149	1,001	1,009
Impaired Financing Receivable, with Related Allowance, Average Recorded Investment	35,473	25,722	28,808
Originated Loans | Home Equity Line of Credit
Financing Receivable, Impaired [Line Items]
Impaired Financing Receivable, with No Related Allowance, Recorded Investment	695		670
Impaired Financing Receivable, with No Related Allowance, Unpaid Principal Balance	948		919
Impaired Financing Receivable, with No Related Allowance, Average Recorded Investment	694		999
Impaired Financing Receivable, with Related Allowance, Recorded Investment	7,179		6,410
Impaired Financing Receivable, with Related Allowance, Unpaid Principal Balance	7,180		6,411
Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment		217	188
Impaired Financing Receivable, with Related Allowance, Average Recorded Investment	6,803		6,382
Originated Loans | Credit Card Receivable
Financing Receivable, Impaired [Line Items]
Impaired Financing Receivable, with No Related Allowance, Recorded Investment	15	19	21
Impaired Financing Receivable, with No Related Allowance, Unpaid Principal Balance	15	19	21
Impaired Financing Receivable, with No Related Allowance, Average Recorded Investment	19	26	20
Impaired Financing Receivable, with Related Allowance, Recorded Investment	664	768	696
Impaired Financing Receivable, with Related Allowance, Unpaid Principal Balance	664	768	696
Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment	201	250	243
Impaired Financing Receivable, with Related Allowance, Average Recorded Investment	699	823	757
Originated Loans | Residential Mortgages
Financing Receivable, Impaired [Line Items]
Impaired Financing Receivable, with No Related Allowance, Recorded Investment	11,950	12,047	11,550
Impaired Financing Receivable, with No Related Allowance, Unpaid Principal Balance	14,350	14,700	13,901
Impaired Financing Receivable, with No Related Allowance, Average Recorded Investment	11,680	12,146	11,979
Impaired Financing Receivable, with Related Allowance, Recorded Investment	11,435	12,650	12,355
Impaired Financing Receivable, with Related Allowance, Unpaid Principal Balance	11,549	12,739	12,458
Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment	981	890	944
Impaired Financing Receivable, with Related Allowance, Average Recorded Investment	$ 12,201	12,675	$ 12,619
Originated Loans | Total impaired loans with no related allowance
Financing Receivable, Impaired [Line Items]
Impaired Financing Receivable, with No Related Allowance, Recorded Investment		55,348
Impaired Financing Receivable, with No Related Allowance, Unpaid Principal Balance		74,139
Impaired Financing Receivable, with No Related Allowance, Average Recorded Investment		55,650
Originated Loans | Total impaired loans with a related allowance
Financing Receivable, Impaired [Line Items]
Impaired Financing Receivable, with Related Allowance, Recorded Investment		68,687
Impaired Financing Receivable, with Related Allowance, Unpaid Principal Balance		69,001
Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment		11,626
Impaired Financing Receivable, with Related Allowance, Average Recorded Investment		$ 53,703

Allowance for Loan Losses (Trou

Allowance for Loan Losses (Troubled Debt Restructuring on Financing Receivables) (Details) $ in Thousands	Jun. 30, 2016USD ($)loans	Dec. 31, 2015USD ($)loans	Jun. 30, 2015USD ($)loans
Financing Receivable, Modifications [Line Items]
Number of contracts at period end | loans	2,476	2,402	2,568
Recorded Investment	$ 170,086	$ 160,928	$ 138,986
Unpaid Principal Balance	$ 177,992	$ 165,694	$ 182,187
Originated Loans
Financing Receivable, Modifications [Line Items]
Number of contracts at period end | loans	2,123	2,054	2,189
Recorded Investment	$ 130,865	$ 116,364	$ 104,648
Unpaid Principal Balance	$ 139,446	$ 122,044	$ 120,599
Acquired Loans
Financing Receivable, Modifications [Line Items]
Number of contracts at period end | loans	278	262	260
Recorded Investment	$ 17,002	$ 19,518	$ 11,362
Unpaid Principal Balance	$ 17,913	$ 20,026	11,891
Covered Consumer Loans
Financing Receivable, Modifications [Line Items]
Number of contracts at period end | loans	75	86
Recorded Investment	$ 22,219	$ 25,046	$ 10,747
Unpaid Principal Balance	$ 20,633	$ 23,624
Covered TDR Loans
Financing Receivable, Modifications [Line Items]
Number of contracts at period end | loans			119
Recorded Investment			$ 22,976
Unpaid Principal Balance			$ 49,697
Commercial and Industrial
Financing Receivable, Modifications [Line Items]
Number of contracts at period end | loans	27	27	66
Recorded Investment	$ 36,650	$ 40,698	$ 29,454
Unpaid Principal Balance	$ 39,985	$ 41,351	$ 37,892
Commercial and Industrial | Originated Loans
Financing Receivable, Modifications [Line Items]
Number of contracts at period end | loans	27	26	56
Recorded Investment	$ 36,650	$ 33,087	$ 29,454
Unpaid Principal Balance	$ 39,985	$ 33,740	$ 36,538
Commercial and Industrial | Acquired Loans
Financing Receivable, Modifications [Line Items]
Number of contracts at period end | loans	0	1	2
Recorded Investment	$ 0	$ 7,611	$ 0
Unpaid Principal Balance	$ 0	$ 7,611	$ 55
Commercial and Industrial | Covered Loans Commercial
Financing Receivable, Modifications [Line Items]
Number of contracts at period end | loans	0	0	8
Recorded Investment	$ 0	$ 0	$ 0
Unpaid Principal Balance	$ 0	$ 0	$ 1,299
Commercial Real Estate
Financing Receivable, Modifications [Line Items]
Number of contracts at period end | loans	35	30	96
Recorded Investment	$ 38,127	$ 29,645	$ 22,996
Unpaid Principal Balance	$ 38,895	$ 30,171	$ 44,632
Commercial Real Estate | Originated Loans
Financing Receivable, Modifications [Line Items]
Number of contracts at period end | loans	26	24	69
Recorded Investment	$ 20,005	$ 14,671	$ 10,362
Unpaid Principal Balance	$ 22,025	$ 16,648	$ 15,681
Commercial Real Estate | Acquired Loans
Financing Receivable, Modifications [Line Items]
Number of contracts at period end | loans	6	3	3
Recorded Investment	$ 4,998	$ 918	$ 930
Unpaid Principal Balance	$ 5,453	$ 1,044	$ 1,018
Commercial Real Estate | Covered Loans Commercial
Financing Receivable, Modifications [Line Items]
Number of contracts at period end | loans	3	3	24
Recorded Investment	$ 13,124	$ 14,056	$ 11,704
Unpaid Principal Balance	$ 11,417	$ 12,479	$ 27,933
Commercial | Acquired Loans
Financing Receivable, Modifications [Line Items]
Number of contracts at period end | loans			5
Recorded Investment			$ 930
Unpaid Principal Balance			$ 1,073
Construction Loans
Financing Receivable, Modifications [Line Items]
Number of contracts at period end | loans	1	1	40
Recorded Investment	$ 566	$ 593	$ 525
Unpaid Principal Balance	$ 672	$ 682	$ 9,542
Construction Loans | Originated Loans
Financing Receivable, Modifications [Line Items]
Number of contracts at period end | loans	0	0	31
Recorded Investment	$ 0	$ 0	$ 0
Unpaid Principal Balance	$ 0	$ 0	$ 0
Construction Loans | Acquired Loans
Financing Receivable, Modifications [Line Items]
Number of contracts at period end | loans	0
Recorded Investment	$ 0
Unpaid Principal Balance	$ 0
Construction Loans | Covered Loans Commercial
Financing Receivable, Modifications [Line Items]
Number of contracts at period end | loans	1	1	9
Recorded Investment	$ 566	$ 593	$ 525
Unpaid Principal Balance	$ 672	$ 682	$ 9,542
Commercial Loan
Financing Receivable, Modifications [Line Items]
Number of contracts at period end | loans	63	58	202
Recorded Investment	$ 75,343	$ 70,936	$ 52,975
Unpaid Principal Balance	$ 79,552	$ 72,204	$ 92,066
Commercial Loan | Originated Loans
Financing Receivable, Modifications [Line Items]
Number of contracts at period end | loans	53	50	156
Recorded Investment	$ 56,655	$ 47,758	$ 39,816
Unpaid Principal Balance	$ 62,010	$ 50,388	52,219
Commercial Loan | Acquired Loans
Financing Receivable, Modifications [Line Items]
Number of contracts at period end | loans	6	4
Recorded Investment	$ 4,998	$ 8,529	$ 930
Unpaid Principal Balance	$ 5,453	$ 8,655
Commercial Loan | Covered Loans Commercial
Financing Receivable, Modifications [Line Items]
Number of contracts at period end | loans	4	4	41
Recorded Investment	$ 13,690	$ 14,649	$ 12,229
Unpaid Principal Balance	$ 12,089	$ 13,161	38,774
Commercial Loan | Covered TDR Loans
Financing Receivable, Modifications [Line Items]
Recorded Investment			$ 12,229
Consumer Loan
Financing Receivable, Modifications [Line Items]
Number of contracts at period end | loans	2,413	2,344	2,366
Recorded Investment	$ 94,743	$ 89,992	$ 86,011
Unpaid Principal Balance	$ 98,440	$ 93,490	$ 90,121
Consumer Loan | Originated Loans
Financing Receivable, Modifications [Line Items]
Number of contracts at period end | loans	2,070	2,004	2,033
Recorded Investment	$ 74,210	$ 68,606	$ 64,832
Unpaid Principal Balance	$ 77,436	$ 71,656	$ 68,380
Consumer Loan | Acquired Loans
Financing Receivable, Modifications [Line Items]
Number of contracts at period end | loans	272	258	255
Recorded Investment	$ 12,004	$ 10,989	$ 10,432
Unpaid Principal Balance	$ 12,460	$ 11,371	$ 10,818
Consumer Loan | Covered Consumer Loans
Financing Receivable, Modifications [Line Items]
Number of contracts at period end | loans	71	82	78
Recorded Investment	$ 8,529	$ 10,397	$ 10,747
Unpaid Principal Balance	$ 8,544	$ 10,463	$ 10,923
Residential Mortgages
Financing Receivable, Modifications [Line Items]
Number of contracts at period end | loans	335	344	348
Recorded Investment	$ 26,284	$ 26,241	$ 27,031
Unpaid Principal Balance	$ 29,115	$ 28,923	$ 30,009
Residential Mortgages | Originated Loans
Financing Receivable, Modifications [Line Items]
Number of contracts at period end | loans	303	312	316
Recorded Investment	$ 23,385	$ 23,905	$ 24,697
Unpaid Principal Balance	$ 25,899	$ 26,359	$ 27,439
Residential Mortgages | Acquired Loans
Financing Receivable, Modifications [Line Items]
Number of contracts at period end | loans	32	31	31
Recorded Investment	$ 2,899	$ 2,154	$ 2,150
Unpaid Principal Balance	$ 3,216	$ 2,382	2,386
Residential Mortgages | Covered Consumer Loans
Financing Receivable, Modifications [Line Items]
Number of contracts at period end | loans	0	1
Recorded Investment	$ 0	$ 182	$ 184
Unpaid Principal Balance	$ 0	$ 182
Credit Card Receivable
Financing Receivable, Modifications [Line Items]
Number of contracts at period end | loans	197	212	231
Recorded Investment	$ 679	$ 717	$ 787
Unpaid Principal Balance	$ 679	$ 717	$ 787
Credit Card Receivable | Originated Loans
Financing Receivable, Modifications [Line Items]
Number of contracts at period end | loans	197	212	231
Recorded Investment	$ 679	$ 717	$ 787
Unpaid Principal Balance	$ 679	$ 717	$ 787
Residential Real Estate | Covered TDR Loans
Financing Receivable, Modifications [Line Items]
Number of contracts at period end | loans			1
Recorded Investment			$ 184
Unpaid Principal Balance			$ 184
Installment
Financing Receivable, Modifications [Line Items]
Number of contracts at period end | loans	1,377	1,274	1,265
Recorded Investment	$ 43,857	$ 38,021	$ 33,071
Unpaid Principal Balance	$ 44,391	$ 38,461	$ 33,712
Installment | Originated Loans
Financing Receivable, Modifications [Line Items]
Number of contracts at period end | loans	1,310	1,223	1,215
Recorded Investment	$ 42,272	$ 36,904	$ 31,927
Unpaid Principal Balance	$ 42,730	$ 37,250	$ 32,485
Installment | Acquired Loans
Financing Receivable, Modifications [Line Items]
Number of contracts at period end | loans	67	51	50
Recorded Investment	$ 1,585	$ 1,117	$ 1,144
Unpaid Principal Balance	$ 1,661	$ 1,211	$ 1,227
Consumer Home Equity Lines Financing Receivable
Financing Receivable, Modifications [Line Items]
Number of contracts at period end | loans	504	514	522
Recorded Investment	$ 23,923	$ 25,013	$ 25,122
Unpaid Principal Balance	$ 24,255	$ 25,389	$ 25,613
Consumer Home Equity Lines Financing Receivable | Originated Loans
Financing Receivable, Modifications [Line Items]
Number of contracts at period end | loans	260	257	271
Recorded Investment	$ 7,874	$ 7,080	$ 7,421
Unpaid Principal Balance	$ 8,128	$ 7,330	$ 7,669
Consumer Home Equity Lines Financing Receivable | Acquired Loans
Financing Receivable, Modifications [Line Items]
Number of contracts at period end | loans	173	176	174
Recorded Investment	$ 7,520	$ 7,718	$ 7,138
Unpaid Principal Balance	$ 7,583	$ 7,778	$ 7,205
Consumer Home Equity Lines Financing Receivable | Covered Consumer Loans
Financing Receivable, Modifications [Line Items]
Number of contracts at period end | loans	71	81	77
Recorded Investment	$ 8,529	$ 10,215	$ 10,563
Unpaid Principal Balance	$ 8,544	$ 10,281	$ 10,739

Allowance for Loan Losses (Accr

Allowance for Loan Losses (Accruing and Non-Accruing Troubled Debt Restructurings) (Details) - USD ($) $ in Thousands	Jun. 30, 2016	Dec. 31, 2015	Jun. 30, 2015
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Recorded Investment	$ 170,086	$ 160,928	$ 138,986
Impaired Financing Receivable, Related Allowance		11,128
Originated Loans
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Financing Receivable, Recorded Investment, Current	14,583,606	14,034,985	13,275,700
Financing Receivable, Recorded Investment, Past Due	82,025	83,520	80,212
Financing Receivable, Net	14,665,631	14,118,505	13,355,912
Recorded Investment	130,865	116,364	104,648
Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment	13,454	14,349	11,626
Impaired Financing Receivable, Related Allowance	13,454	14,349	11,626
Acquired Loans
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Financing Receivable, Recorded Investment, Current	1,463,445	1,697,364	2,050,779
Financing Receivable, Recorded Investment, Past Due	25,191	45,707	44,905
Financing Receivable, Net	1,488,636	1,743,071	2,095,684
Recorded Investment	17,002	19,518	11,362
Covered Consumer Loans
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Recorded Investment	22,219	25,046	10,747
Impaired Financing Receivable, Related Allowance		23
Covered TDR Loans
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Recorded Investment			22,976
Impaired Financing Receivable, Related Allowance		2,356
Accruing TDRs
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Financing Receivable, Recorded Investment, Current	107,381	115,149	93,245
Financing Receivable, Recorded Investment, Past Due	3,739	21,461	15,373
Financing Receivable, Net	111,120	136,610	108,618
Accruing TDRs | Originated Loans
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Financing Receivable, Recorded Investment, Current	86,048	87,694	74,249
Financing Receivable, Recorded Investment, Past Due	2,846	6,298	2,915
Financing Receivable, Net	88,894	93,992	77,164
Accruing TDRs | Acquired Loans
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Financing Receivable, Recorded Investment, Current	12,941	16,615	8,782
Financing Receivable, Recorded Investment, Past Due	806	1,037	665
Financing Receivable, Net	13,747	17,652	9,447
Accruing TDRs | Covered Consumer Loans
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Financing Receivable, Recorded Investment, Current		10,247	9,689
Financing Receivable, Recorded Investment, Past Due		70	89
Financing Receivable, Net		10,317	9,778
Accruing TDRs | Covered TDR Loans
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Financing Receivable, Recorded Investment, Current	8,392	10,840	10,214
Financing Receivable, Recorded Investment, Past Due	87	14,126	11,793
Financing Receivable, Net	8,479	24,966	22,007
Nonaccruing TDRs
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Financing Receivable, Recorded Investment, Current	25,136	12,713	19,598
Financing Receivable, Recorded Investment, Past Due	33,830	11,605	10,770
Financing Receivable, Net	58,966	24,318	30,368
Nonaccruing TDRs | Originated Loans
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Financing Receivable, Recorded Investment, Current	21,392	11,110	17,762
Financing Receivable, Recorded Investment, Past Due	20,579	11,262	9,722
Financing Receivable, Net	41,971	22,372	27,484
Nonaccruing TDRs | Acquired Loans
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Financing Receivable, Recorded Investment, Current	3,128	1,597	1,693
Financing Receivable, Recorded Investment, Past Due	127	269	222
Financing Receivable, Net	3,255	1,866	1,915
Nonaccruing TDRs | Covered Consumer Loans
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Financing Receivable, Recorded Investment, Current		6	143
Financing Receivable, Recorded Investment, Past Due		74	826
Financing Receivable, Net		80	969
Nonaccruing TDRs | Covered TDR Loans
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Financing Receivable, Recorded Investment, Current	616	6	143
Financing Receivable, Recorded Investment, Past Due	13,124	74	826
Financing Receivable, Net	13,740	80	969
Total Tdr Allowance
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Impaired Financing Receivable, Related Allowance	10,237		7,968
Total Tdr Allowance | Originated Loans
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Recorded Investment	130,865	116,364
Impaired Financing Receivable, Related Allowance	7,422	8,456	5,314
Total Tdr Allowance | Acquired Loans
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Recorded Investment	17,002	19,518
Impaired Financing Receivable, Related Allowance	533	316	142
Total Tdr Allowance | Covered Consumer Loans
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Impaired Financing Receivable, Related Allowance			23
Total Tdr Allowance | Covered TDR Loans
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Recorded Investment	22,219	25,046
Impaired Financing Receivable, Related Allowance	2,282		2,512
Commercial and Industrial
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Recorded Investment	36,650	40,698	29,454
Impaired Financing Receivable, Related Allowance		6,052
Commercial and Industrial | Originated Loans Commercial
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Recorded Investment			29,454
Commercial and Industrial | Originated Loans
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Financing Receivable, Recorded Investment, Current	5,868,988	5,779,785	5,459,797
Financing Receivable, Recorded Investment, Past Due	14,006	13,623	11,566
Financing Receivable, Net	5,882,994	5,793,408	5,471,363
Recorded Investment	36,650	33,087	29,454
Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment	10,447	11,837	9,117
Commercial and Industrial | Acquired Loans
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Financing Receivable, Recorded Investment, Current	179,874	236,467	334,012
Financing Receivable, Recorded Investment, Past Due	1,629	3,678	3,411
Financing Receivable, Net	181,503	240,145	337,423
Recorded Investment	0	7,611	0
Commercial and Industrial | Covered Loans Commercial
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Recorded Investment	0	0	0
Commercial and Industrial | Covered Commercial TDR Loans
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Recorded Investment		0	0
Impaired Financing Receivable, Related Allowance		0
Commercial and Industrial | Accruing TDRs
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Financing Receivable, Recorded Investment, Current	16,082	30,177	17,346
Financing Receivable, Recorded Investment, Past Due	969	107	0
Financing Receivable, Net	17,051	30,284	17,346
Commercial and Industrial | Accruing TDRs | Originated Loans Commercial
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Financing Receivable, Recorded Investment, Current	16,082	22,566	17,346
Financing Receivable, Recorded Investment, Past Due	969	107	0
Financing Receivable, Net	17,051	22,673	17,346
Commercial and Industrial | Accruing TDRs | Acquired Loans
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Financing Receivable, Recorded Investment, Current	0	7,611	0
Financing Receivable, Recorded Investment, Past Due	0	0	0
Financing Receivable, Net	0	7,611	0
Commercial and Industrial | Accruing TDRs | Covered Commercial TDR Loans
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Financing Receivable, Recorded Investment, Current	0	0	0
Financing Receivable, Recorded Investment, Past Due	0	0	0
Financing Receivable, Net	0	0	0
Commercial and Industrial | Nonaccruing TDRs
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Financing Receivable, Recorded Investment, Current	13,068	4,229	9,260
Financing Receivable, Recorded Investment, Past Due	6,531	6,185	2,848
Financing Receivable, Net	19,599	10,414	12,108
Commercial and Industrial | Nonaccruing TDRs | Originated Loans Commercial
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Financing Receivable, Recorded Investment, Current	13,068	4,229	9,260
Financing Receivable, Recorded Investment, Past Due	6,531	6,185	2,848
Financing Receivable, Net	19,599	10,414	12,108
Commercial and Industrial | Nonaccruing TDRs | Acquired Loans
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Financing Receivable, Recorded Investment, Current	0	0	0
Financing Receivable, Recorded Investment, Past Due	0	0	0
Financing Receivable, Net	0	0	0
Commercial and Industrial | Nonaccruing TDRs | Covered Commercial TDR Loans
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Financing Receivable, Recorded Investment, Current	0	0	0
Financing Receivable, Recorded Investment, Past Due	0	0	0
Financing Receivable, Net	0	0	0
Commercial and Industrial | Total Tdr Allowance
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Recorded Investment	36,650
Impaired Financing Receivable, Related Allowance	4,917		2,893
Commercial and Industrial | Total Tdr Allowance | Originated Loans Commercial
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Recorded Investment	36,650	33,087
Impaired Financing Receivable, Related Allowance	4,917	6,052	2,893
Commercial and Industrial | Total Tdr Allowance | Acquired Loans
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Recorded Investment	0	7,611
Impaired Financing Receivable, Related Allowance	0	0	0
Commercial and Industrial | Total Tdr Allowance | Covered Commercial TDR Loans
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Recorded Investment	0
Impaired Financing Receivable, Related Allowance	0		0
Commercial Loan
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Recorded Investment	75,343	70,936	52,975
Impaired Financing Receivable, Related Allowance		8,606
Commercial Loan | Originated Loans Commercial
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Recorded Investment			39,816
Commercial Loan | Originated Loans
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Recorded Investment	56,655	47,758	39,816
Commercial Loan | Acquired Loans
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Recorded Investment	4,998	8,529	930
Commercial Loan | Covered Loans Commercial
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Recorded Investment	13,690	14,649	12,229
Commercial Loan | Covered Commercial TDR Loans
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Recorded Investment		14,649
Impaired Financing Receivable, Related Allowance		2,333
Commercial Loan | Covered TDR Loans
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Recorded Investment			12,229
Commercial Loan | Accruing TDRs
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Financing Receivable, Recorded Investment, Current	27,653	41,041	23,839
Financing Receivable, Recorded Investment, Past Due	1,062	16,410	11,704
Financing Receivable, Net	28,715	57,451	35,543
Commercial Loan | Accruing TDRs | Originated Loans Commercial
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Financing Receivable, Recorded Investment, Current	24,933	32,837	23,314
Financing Receivable, Recorded Investment, Past Due	1,062	2,354	0
Financing Receivable, Net	25,995	35,191	23,314
Commercial Loan | Accruing TDRs | Acquired Loans
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Financing Receivable, Recorded Investment, Current	2,720	7,611	0
Financing Receivable, Recorded Investment, Past Due	0	0	0
Financing Receivable, Net	2,720	7,611	0
Commercial Loan | Accruing TDRs | Covered Commercial TDR Loans
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Financing Receivable, Recorded Investment, Current	0	593
Financing Receivable, Recorded Investment, Past Due	0	14,056
Financing Receivable, Net	0	14,649
Commercial Loan | Accruing TDRs | Covered TDR Loans
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Financing Receivable, Recorded Investment, Current			525
Financing Receivable, Recorded Investment, Past Due			11,704
Financing Receivable, Net			12,229
Commercial Loan | Nonaccruing TDRs
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Financing Receivable, Recorded Investment, Current	15,896	5,634	11,788
Financing Receivable, Recorded Investment, Past Due	30,732	7,851	5,644
Financing Receivable, Net	46,628	13,485	17,432
Commercial Loan | Nonaccruing TDRs | Originated Loans Commercial
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Financing Receivable, Recorded Investment, Current	13,179	4,975	10,858
Financing Receivable, Recorded Investment, Past Due	17,481	7,592	5,644
Financing Receivable, Net	30,660	12,567	16,502
Commercial Loan | Nonaccruing TDRs | Acquired Loans
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Financing Receivable, Recorded Investment, Current	2,151	659	930
Financing Receivable, Recorded Investment, Past Due	127	259	0
Financing Receivable, Net	2,278	918	930
Commercial Loan | Nonaccruing TDRs | Covered Commercial TDR Loans
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Financing Receivable, Recorded Investment, Current	566	0
Financing Receivable, Recorded Investment, Past Due	13,124	0
Financing Receivable, Net	13,690	0
Commercial Loan | Nonaccruing TDRs | Covered TDR Loans
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Financing Receivable, Recorded Investment, Current			0
Financing Receivable, Recorded Investment, Past Due			0
Financing Receivable, Net			0
Commercial Loan | Total Tdr Allowance
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Recorded Investment	75,343
Impaired Financing Receivable, Related Allowance	7,339		5,543
Commercial Loan | Total Tdr Allowance | Originated Loans Commercial
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Recorded Investment	56,655	47,758
Impaired Financing Receivable, Related Allowance	4,922	6,072	2,956
Commercial Loan | Total Tdr Allowance | Acquired Loans
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Recorded Investment	4,998	8,529
Impaired Financing Receivable, Related Allowance	156	201	98
Commercial Loan | Total Tdr Allowance | Covered Commercial TDR Loans
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Recorded Investment	13,690
Impaired Financing Receivable, Related Allowance	2,261
Commercial Loan | Total Tdr Allowance | Covered TDR Loans
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Impaired Financing Receivable, Related Allowance			2,489
Construction Loans
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Recorded Investment	566	593	525
Impaired Financing Receivable, Related Allowance		0
Construction Loans | Originated Loans Commercial
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Recorded Investment			0
Construction Loans | Originated Loans
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Financing Receivable, Recorded Investment, Current	699,871	643,491
Financing Receivable, Recorded Investment, Past Due	5,469	1,846
Financing Receivable, Net	705,340	645,337	586,895
Recorded Investment	0	0	0
Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment	0	0	0
Construction Loans | Acquired Loans
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Financing Receivable, Recorded Investment, Current	3,698	5,380
Financing Receivable, Recorded Investment, Past Due	413	733
Financing Receivable, Net	4,111	6,113	6,230
Recorded Investment	0
Construction Loans | Covered Loans Commercial
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Recorded Investment	566	593	525
Construction Loans | Covered Commercial TDR Loans
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Recorded Investment		593	525
Impaired Financing Receivable, Related Allowance		0
Construction Loans | Accruing TDRs
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Financing Receivable, Recorded Investment, Current	0	593	525
Financing Receivable, Recorded Investment, Past Due	0	0	0
Financing Receivable, Net	0	593	525
Construction Loans | Accruing TDRs | Originated Loans Commercial
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Financing Receivable, Recorded Investment, Current	0	0	0
Financing Receivable, Recorded Investment, Past Due	0	0	0
Financing Receivable, Net	0	0	0
Construction Loans | Accruing TDRs | Acquired Loans
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Financing Receivable, Recorded Investment, Current	0
Financing Receivable, Recorded Investment, Past Due	0
Financing Receivable, Net	0
Construction Loans | Accruing TDRs | Covered Commercial TDR Loans
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Financing Receivable, Recorded Investment, Current	0	593	525
Financing Receivable, Recorded Investment, Past Due	0	0	0
Financing Receivable, Net	0	593	525
Construction Loans | Nonaccruing TDRs
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Financing Receivable, Recorded Investment, Current	566	0	0
Financing Receivable, Recorded Investment, Past Due	0	0	0
Financing Receivable, Net	566	0	0
Construction Loans | Nonaccruing TDRs | Originated Loans Commercial
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Financing Receivable, Recorded Investment, Current	0	0	0
Financing Receivable, Recorded Investment, Past Due	0	0	0
Financing Receivable, Net	0	0	0
Construction Loans | Nonaccruing TDRs | Acquired Loans
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Financing Receivable, Recorded Investment, Current	0
Financing Receivable, Recorded Investment, Past Due	0
Financing Receivable, Net	0
Construction Loans | Nonaccruing TDRs | Covered Commercial TDR Loans
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Financing Receivable, Recorded Investment, Current	566	0	0
Financing Receivable, Recorded Investment, Past Due	0	0	0
Financing Receivable, Net	566	0	0
Construction Loans | Total Tdr Allowance
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Recorded Investment	566
Impaired Financing Receivable, Related Allowance	25		96
Construction Loans | Total Tdr Allowance | Originated Loans Commercial
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Recorded Investment	0	0
Impaired Financing Receivable, Related Allowance	0	0	0
Construction Loans | Total Tdr Allowance | Acquired Loans
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Recorded Investment	0
Impaired Financing Receivable, Related Allowance	0
Construction Loans | Total Tdr Allowance | Covered Commercial TDR Loans
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Recorded Investment	566
Impaired Financing Receivable, Related Allowance	25		96
Consumer Home Equity Lines Financing Receivable
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Recorded Investment	23,923	25,013	25,122
Impaired Financing Receivable, Related Allowance		281
Consumer Home Equity Lines Financing Receivable | Originated Consumer Loans
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Recorded Investment			7,421
Consumer Home Equity Lines Financing Receivable | Originated Loans
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Recorded Investment	7,874	7,080	7,421
Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment	169		217
Consumer Home Equity Lines Financing Receivable | Acquired Loans
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Recorded Investment	7,520	7,718	7,138
Consumer Home Equity Lines Financing Receivable | Covered Consumer Loans
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Recorded Investment	8,529	10,215	10,563
Impaired Financing Receivable, Related Allowance		23
Consumer Home Equity Lines Financing Receivable | Accruing TDRs
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Financing Receivable, Recorded Investment, Current	22,229	23,517	22,503
Financing Receivable, Recorded Investment, Past Due	749	839	814
Financing Receivable, Net	22,978	24,356	23,317
Consumer Home Equity Lines Financing Receivable | Accruing TDRs | Originated Consumer Loans
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Financing Receivable, Recorded Investment, Current	7,017	6,511	6,611
Financing Receivable, Recorded Investment, Past Due	79	114	107
Financing Receivable, Net	7,096	6,625	6,718
Consumer Home Equity Lines Financing Receivable | Accruing TDRs | Acquired Loans
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Financing Receivable, Recorded Investment, Current	6,820	6,941	6,387
Financing Receivable, Recorded Investment, Past Due	583	655	618
Financing Receivable, Net	7,403	7,596	7,005
Consumer Home Equity Lines Financing Receivable | Accruing TDRs | Covered Consumer Loans
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Financing Receivable, Recorded Investment, Current	8,392	10,065	9,505
Financing Receivable, Recorded Investment, Past Due	87	70	89
Financing Receivable, Net	8,479	10,135	9,594
Consumer Home Equity Lines Financing Receivable | Nonaccruing TDRs
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Financing Receivable, Recorded Investment, Current	945	527	833
Financing Receivable, Recorded Investment, Past Due	0	130	972
Financing Receivable, Net	945	657	1,805
Consumer Home Equity Lines Financing Receivable | Nonaccruing TDRs | Originated Consumer Loans
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Financing Receivable, Recorded Investment, Current	778	399	557
Financing Receivable, Recorded Investment, Past Due	0	56	146
Financing Receivable, Net	778	455	703
Consumer Home Equity Lines Financing Receivable | Nonaccruing TDRs | Acquired Loans
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Financing Receivable, Recorded Investment, Current	117	122	133
Financing Receivable, Recorded Investment, Past Due	0	0	0
Financing Receivable, Net	117	122	133
Consumer Home Equity Lines Financing Receivable | Nonaccruing TDRs | Covered Consumer Loans
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Financing Receivable, Recorded Investment, Current	50	6	143
Financing Receivable, Recorded Investment, Past Due	0	74	826
Financing Receivable, Net	50	80	969
Consumer Home Equity Lines Financing Receivable | Total Tdr Allowance
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Recorded Investment	23,923
Impaired Financing Receivable, Related Allowance	305		240
Consumer Home Equity Lines Financing Receivable | Total Tdr Allowance | Originated Consumer Loans
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Recorded Investment	7,874	7,080
Impaired Financing Receivable, Related Allowance		188	217
Consumer Home Equity Lines Financing Receivable | Total Tdr Allowance | Acquired Loans
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Recorded Investment	7,520	7,718
Impaired Financing Receivable, Related Allowance	115	70	0
Consumer Home Equity Lines Financing Receivable | Total Tdr Allowance | Covered Consumer Loans
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Recorded Investment	8,529	10,215
Impaired Financing Receivable, Related Allowance	21		23
Consumer Residential Mortgages Financing Receivable
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Recorded Investment			27,031
Consumer Residential Mortgages Financing Receivable | Originated Consumer Loans
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Recorded Investment			24,697
Consumer Residential Mortgages Financing Receivable | Acquired Loans
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Recorded Investment			2,150
Consumer Residential Mortgages Financing Receivable | Accruing TDRs
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Financing Receivable, Recorded Investment, Current			15,422
Financing Receivable, Recorded Investment, Past Due			2,105
Financing Receivable, Net			17,527
Consumer Residential Mortgages Financing Receivable | Accruing TDRs | Originated Consumer Loans
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Financing Receivable, Recorded Investment, Current			13,925
Financing Receivable, Recorded Investment, Past Due			2,105
Financing Receivable, Net			16,030
Consumer Residential Mortgages Financing Receivable | Accruing TDRs | Acquired Loans
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Financing Receivable, Recorded Investment, Current			1,313
Financing Receivable, Recorded Investment, Past Due			0
Financing Receivable, Net			1,313
Consumer Residential Mortgages Financing Receivable | Nonaccruing TDRs
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Financing Receivable, Recorded Investment, Current			5,572
Financing Receivable, Recorded Investment, Past Due			3,932
Financing Receivable, Net			9,504
Consumer Residential Mortgages Financing Receivable | Nonaccruing TDRs | Originated Consumer Loans
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Financing Receivable, Recorded Investment, Current			4,957
Financing Receivable, Recorded Investment, Past Due			3,710
Financing Receivable, Net			8,667
Consumer Residential Mortgages Financing Receivable | Nonaccruing TDRs | Acquired Loans
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Financing Receivable, Recorded Investment, Current			615
Financing Receivable, Recorded Investment, Past Due			222
Financing Receivable, Net			837
Consumer Residential Mortgages Financing Receivable | Total Tdr Allowance
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Impaired Financing Receivable, Related Allowance			890
Consumer Residential Mortgages Financing Receivable | Total Tdr Allowance | Originated Consumer Loans
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Impaired Financing Receivable, Related Allowance			890
Consumer Residential Mortgages Financing Receivable | Total Tdr Allowance | Acquired Loans
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Impaired Financing Receivable, Related Allowance			0
Commercial Real Estate
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Recorded Investment	38,127	29,645	22,996
Impaired Financing Receivable, Related Allowance		2,554
Commercial Real Estate | Originated Loans Commercial
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Recorded Investment			10,362
Commercial Real Estate | Originated Loans
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Financing Receivable, Net	2,035,498	2,077,344	2,138,372
Recorded Investment	20,005	14,671	10,362
Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment	507	128	151
Commercial Real Estate | Acquired Loans
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Recorded Investment	4,998	918	930
Commercial Real Estate | Covered Loans Commercial
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Recorded Investment	13,124	14,056	11,704
Commercial Real Estate | Covered Commercial TDR Loans
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Recorded Investment		14,056	11,704
Impaired Financing Receivable, Related Allowance		2,333
Commercial Real Estate | Accruing TDRs
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Financing Receivable, Recorded Investment, Current	11,571	10,271	5,968
Financing Receivable, Recorded Investment, Past Due	93	16,303	11,704
Financing Receivable, Net	11,664	26,574	17,672
Commercial Real Estate | Accruing TDRs | Originated Loans Commercial
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Financing Receivable, Recorded Investment, Current	8,851	10,271	5,968
Financing Receivable, Recorded Investment, Past Due	93	2,247	0
Financing Receivable, Net	8,944	12,518	5,968
Commercial Real Estate | Accruing TDRs | Acquired Loans
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Financing Receivable, Recorded Investment, Current	2,720	0	0
Financing Receivable, Recorded Investment, Past Due	0	0	0
Financing Receivable, Net	2,720	0	0
Commercial Real Estate | Accruing TDRs | Covered Commercial TDR Loans
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Financing Receivable, Recorded Investment, Current	0	0	0
Financing Receivable, Recorded Investment, Past Due	0	14,056	11,704
Financing Receivable, Net	0	14,056	11,704
Commercial Real Estate | Nonaccruing TDRs
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Financing Receivable, Recorded Investment, Current	2,262	1,405	2,528
Financing Receivable, Recorded Investment, Past Due	24,201	1,666	2,796
Financing Receivable, Net	26,463	3,071	5,324
Commercial Real Estate | Nonaccruing TDRs | Originated Loans Commercial
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Financing Receivable, Recorded Investment, Current	111	746	1,598
Financing Receivable, Recorded Investment, Past Due	10,950	1,407	2,796
Financing Receivable, Net	11,061	2,153	4,394
Commercial Real Estate | Nonaccruing TDRs | Acquired Loans
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Financing Receivable, Recorded Investment, Current	2,151	659	930
Financing Receivable, Recorded Investment, Past Due	127	259	0
Financing Receivable, Net	2,278	918	930
Commercial Real Estate | Nonaccruing TDRs | Covered Commercial TDR Loans
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Financing Receivable, Recorded Investment, Current	0	0	0
Financing Receivable, Recorded Investment, Past Due	13,124	0	0
Financing Receivable, Net	13,124	0	0
Commercial Real Estate | Total Tdr Allowance
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Recorded Investment	38,127
Impaired Financing Receivable, Related Allowance	2,397		2,554
Commercial Real Estate | Total Tdr Allowance | Originated Loans Commercial
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Recorded Investment	20,005	14,671
Impaired Financing Receivable, Related Allowance	5	20	63
Commercial Real Estate | Total Tdr Allowance | Acquired Loans
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Recorded Investment	4,998	918
Impaired Financing Receivable, Related Allowance	156	201	98
Commercial Real Estate | Total Tdr Allowance | Covered Commercial TDR Loans
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Recorded Investment	13,124
Impaired Financing Receivable, Related Allowance	2,236		2,393
Consumer Installment
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Recorded Investment			33,071
Consumer Installment | Originated Consumer Loans
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Recorded Investment			31,927
Consumer Installment | Acquired Loans
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Recorded Investment			1,144
Consumer Installment | Accruing TDRs
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Financing Receivable, Recorded Investment, Current			30,797
Financing Receivable, Recorded Investment, Past Due			650
Financing Receivable, Net			31,447
Consumer Installment | Accruing TDRs | Originated Consumer Loans
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Financing Receivable, Recorded Investment, Current			29,715
Financing Receivable, Recorded Investment, Past Due			603
Financing Receivable, Net			30,318
Consumer Installment | Accruing TDRs | Acquired Loans
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Financing Receivable, Recorded Investment, Current			1,082
Financing Receivable, Recorded Investment, Past Due			47
Financing Receivable, Net			1,129
Consumer Installment | Nonaccruing TDRs
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Financing Receivable, Recorded Investment, Current			1,405
Financing Receivable, Recorded Investment, Past Due			219
Financing Receivable, Net			1,624
Consumer Installment | Nonaccruing TDRs | Originated Consumer Loans
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Financing Receivable, Recorded Investment, Current			1,390
Financing Receivable, Recorded Investment, Past Due			219
Financing Receivable, Net			1,609
Consumer Installment | Nonaccruing TDRs | Acquired Loans
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Financing Receivable, Recorded Investment, Current			15
Financing Receivable, Recorded Investment, Past Due			0
Financing Receivable, Net			15
Consumer Installment | Total Tdr Allowance
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Impaired Financing Receivable, Related Allowance			1,045
Consumer Installment | Total Tdr Allowance | Originated Consumer Loans
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Impaired Financing Receivable, Related Allowance			1,001
Consumer Installment | Total Tdr Allowance | Acquired Loans
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Impaired Financing Receivable, Related Allowance			44
Residential Mortgages
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Recorded Investment	26,284	26,241	27,031
Impaired Financing Receivable, Related Allowance		944
Residential Mortgages | Originated Loans
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Financing Receivable, Recorded Investment, Current	712,720	669,734	633,821
Financing Receivable, Recorded Investment, Past Due	15,814	19,311	19,322
Financing Receivable, Net	728,534	689,045	653,143
Recorded Investment	23,385	23,905	24,697
Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment	981	944	890
Residential Mortgages | Acquired Loans
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Financing Receivable, Recorded Investment, Current	287,768	307,889	352,298
Financing Receivable, Recorded Investment, Past Due	5,109	16,119	6,261
Financing Receivable, Net	292,877	324,008	358,559
Recorded Investment	2,899	2,154	2,150
Residential Mortgages | Covered Consumer Loans
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Recorded Investment	0	182	184
Impaired Financing Receivable, Related Allowance		0
Residential Mortgages | Accruing TDRs
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Financing Receivable, Recorded Investment, Current	16,583	14,147
Financing Receivable, Recorded Investment, Past Due	524	3,152
Financing Receivable, Net	17,107	17,299
Residential Mortgages | Accruing TDRs | Originated Consumer Loans
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Financing Receivable, Recorded Investment, Current	14,324	12,869
Financing Receivable, Recorded Investment, Past Due	524	2,896
Financing Receivable, Net	14,848	15,765
Residential Mortgages | Accruing TDRs | Acquired Loans
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Financing Receivable, Recorded Investment, Current	2,259	1,096
Financing Receivable, Recorded Investment, Past Due	0	256
Financing Receivable, Net	2,259	1,352
Residential Mortgages | Accruing TDRs | Covered Consumer Loans
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Financing Receivable, Recorded Investment, Current	0	182	184
Financing Receivable, Recorded Investment, Past Due	0	0	0
Financing Receivable, Net	0	182	184
Residential Mortgages | Nonaccruing TDRs
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Financing Receivable, Recorded Investment, Current	6,357	5,413
Financing Receivable, Recorded Investment, Past Due	2,820	3,529
Financing Receivable, Net	9,177	8,942
Residential Mortgages | Nonaccruing TDRs | Originated Consumer Loans
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Financing Receivable, Recorded Investment, Current	5,717	4,611
Financing Receivable, Recorded Investment, Past Due	2,820	3,529
Financing Receivable, Net	8,537	8,140
Residential Mortgages | Nonaccruing TDRs | Acquired Loans
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Financing Receivable, Recorded Investment, Current	640	802
Financing Receivable, Recorded Investment, Past Due	0	0
Financing Receivable, Net	640	802
Residential Mortgages | Nonaccruing TDRs | Covered Consumer Loans
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Financing Receivable, Recorded Investment, Current	0	0	0
Financing Receivable, Recorded Investment, Past Due	0	0	0
Financing Receivable, Net	0	0	0
Residential Mortgages | Total Tdr Allowance
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Recorded Investment	26,284
Impaired Financing Receivable, Related Allowance	1,157
Residential Mortgages | Total Tdr Allowance | Originated Consumer Loans
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Recorded Investment	23,385	23,905
Impaired Financing Receivable, Related Allowance		944
Residential Mortgages | Total Tdr Allowance | Acquired Loans
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Recorded Investment	2,899	2,154
Impaired Financing Receivable, Related Allowance	176	0
Residential Mortgages | Total Tdr Allowance | Covered Consumer Loans
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Recorded Investment	0	182
Impaired Financing Receivable, Related Allowance	0		0
Credit Card Receivable
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Recorded Investment	679	717	787
Impaired Financing Receivable, Related Allowance		243
Credit Card Receivable | Originated Consumer Loans
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Recorded Investment			787
Credit Card Receivable | Originated Loans
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Financing Receivable, Recorded Investment, Current	172,811	180,268	167,001
Financing Receivable, Recorded Investment, Past Due	2,175	2,575	1,575
Financing Receivable, Net	174,986	182,843	168,576
Recorded Investment	679	717	787
Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment	201	243	250
Credit Card Receivable | Accruing TDRs
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Financing Receivable, Recorded Investment, Current	519	575	684
Financing Receivable, Recorded Investment, Past Due	117	140	100
Financing Receivable, Net	636	715	784
Credit Card Receivable | Accruing TDRs | Originated Consumer Loans
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Financing Receivable, Recorded Investment, Current	519	575	684
Financing Receivable, Recorded Investment, Past Due	117	140	100
Financing Receivable, Net	636	715	784
Credit Card Receivable | Nonaccruing TDRs
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Financing Receivable, Recorded Investment, Current	0	0	0
Financing Receivable, Recorded Investment, Past Due	43	2	3
Financing Receivable, Net	43	2	3
Credit Card Receivable | Nonaccruing TDRs | Originated Consumer Loans
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Financing Receivable, Recorded Investment, Current	0	0	0
Financing Receivable, Recorded Investment, Past Due	43	2	3
Financing Receivable, Net	43	2	3
Credit Card Receivable | Total Tdr Allowance
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Recorded Investment	679
Impaired Financing Receivable, Related Allowance	201		250
Credit Card Receivable | Total Tdr Allowance | Originated Consumer Loans
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Recorded Investment	679	717
Impaired Financing Receivable, Related Allowance		243	250
Total consumer
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Recorded Investment	94,743	89,992	86,011
Impaired Financing Receivable, Related Allowance		2,522
Total consumer | Originated Consumer Loans
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Recorded Investment			64,832
Total consumer | Originated Loans
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Recorded Investment	74,210	68,606	64,832
Total consumer | Acquired Loans
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Recorded Investment	12,004	10,989	10,432
Total consumer | Covered Consumer Loans
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Recorded Investment	8,529	10,397	10,747
Total consumer | Accruing TDRs
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Financing Receivable, Recorded Investment, Current	79,728	74,108	69,406
Financing Receivable, Recorded Investment, Past Due	2,677	5,051	3,669
Financing Receivable, Net	82,405	79,159	73,075
Total consumer | Accruing TDRs | Originated Consumer Loans
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Financing Receivable, Recorded Investment, Current	61,115	54,857	50,935
Financing Receivable, Recorded Investment, Past Due	1,784	3,944	2,915
Financing Receivable, Net	62,899	58,801	53,850
Total consumer | Accruing TDRs | Acquired Loans
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Financing Receivable, Recorded Investment, Current	10,221	9,004	8,782
Financing Receivable, Recorded Investment, Past Due	806	1,037	665
Financing Receivable, Net	11,027	10,041	9,447
Total consumer | Accruing TDRs | Covered Consumer Loans
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Financing Receivable, Recorded Investment, Current	8,392
Financing Receivable, Recorded Investment, Past Due	87
Financing Receivable, Net	8,479
Total consumer | Nonaccruing TDRs
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Financing Receivable, Recorded Investment, Current	9,240	7,079	7,810
Financing Receivable, Recorded Investment, Past Due	3,098	3,754	5,126
Financing Receivable, Net	12,338	10,833	12,936
Total consumer | Nonaccruing TDRs | Originated Consumer Loans
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Financing Receivable, Recorded Investment, Current	8,213	6,135	6,904
Financing Receivable, Recorded Investment, Past Due	3,098	3,670	4,078
Financing Receivable, Net	11,311	9,805	10,982
Total consumer | Nonaccruing TDRs | Acquired Loans
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Financing Receivable, Recorded Investment, Current	977	938	763
Financing Receivable, Recorded Investment, Past Due	0	10	222
Financing Receivable, Net	977	948	985
Total consumer | Nonaccruing TDRs | Covered Consumer Loans
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Financing Receivable, Recorded Investment, Current	50
Financing Receivable, Recorded Investment, Past Due	0
Financing Receivable, Net	50
Total consumer | Total Tdr Allowance
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Recorded Investment	94,743
Impaired Financing Receivable, Related Allowance	2,898		2,425
Total consumer | Total Tdr Allowance | Originated Consumer Loans
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Recorded Investment	74,210	68,606
Impaired Financing Receivable, Related Allowance	2,500	2,384	2,358
Total consumer | Total Tdr Allowance | Acquired Loans
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Recorded Investment	12,004	10,989
Impaired Financing Receivable, Related Allowance	377	115	44
Total consumer | Total Tdr Allowance | Covered Consumer Loans
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Recorded Investment	8,529	10,397
Impaired Financing Receivable, Related Allowance	21
Installment
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Recorded Investment	43,857	38,021	33,071
Impaired Financing Receivable, Related Allowance		1,054
Installment | Originated Loans
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Financing Receivable, Recorded Investment, Current	3,329,921	2,963,667	2,701,332
Financing Receivable, Recorded Investment, Past Due	23,163	26,682	18,727
Financing Receivable, Net	3,353,084	2,990,349	2,720,059
Recorded Investment	42,272	36,904	31,927
Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment	1,149	1,009	1,001
Installment | Acquired Loans
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Financing Receivable, Recorded Investment, Current	489,553	566,010	653,237
Financing Receivable, Recorded Investment, Past Due	4,876	7,362	6,111
Financing Receivable, Net	494,429	573,372	659,348
Recorded Investment	1,585	1,117	1,144
Installment | Accruing TDRs
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Financing Receivable, Recorded Investment, Current	40,397	35,869
Financing Receivable, Recorded Investment, Past Due	1,287	920
Financing Receivable, Net	41,684	36,789
Installment | Accruing TDRs | Originated Consumer Loans
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Financing Receivable, Recorded Investment, Current	39,255	34,902
Financing Receivable, Recorded Investment, Past Due	1,064	794
Financing Receivable, Net	40,319	35,696
Installment | Accruing TDRs | Acquired Loans
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Financing Receivable, Recorded Investment, Current	1,142	967
Financing Receivable, Recorded Investment, Past Due	223	126
Financing Receivable, Net	1,365	1,093
Installment | Nonaccruing TDRs
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Financing Receivable, Recorded Investment, Current	1,938	1,139
Financing Receivable, Recorded Investment, Past Due	235	93
Financing Receivable, Net	2,173	1,232
Installment | Nonaccruing TDRs | Originated Consumer Loans
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Financing Receivable, Recorded Investment, Current	1,718	1,125
Financing Receivable, Recorded Investment, Past Due	235	83
Financing Receivable, Net	1,953	1,208
Installment | Nonaccruing TDRs | Acquired Loans
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Financing Receivable, Recorded Investment, Current	220	14
Financing Receivable, Recorded Investment, Past Due	0	10
Financing Receivable, Net	220	24
Installment | Total Tdr Allowance
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Recorded Investment	43,857
Impaired Financing Receivable, Related Allowance	1,235
Installment | Total Tdr Allowance | Originated Consumer Loans
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Recorded Investment	42,272	36,904
Impaired Financing Receivable, Related Allowance		1,009
Installment | Total Tdr Allowance | Acquired Loans
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Recorded Investment	1,585	1,117
Impaired Financing Receivable, Related Allowance	86	45
Home Equity Line of Credit | Originated Loans
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Financing Receivable, Net	$ 1,276,661	1,248,438	1,180,802
Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment		$ 188	$ 217

Allowance for Loan Losses (Sc56

Allowance for Loan Losses (Schedule of Defaulted Troubled Debt Restructuring) (Details) $ in Thousands	Jun. 30, 2016USD ($)loans	Dec. 31, 2015USD ($)loans	Jun. 30, 2015USD ($)loans
Troubled Debt Restructuring, Debtor, Current Period [Line Items]
Financing receivable, modifications, subsequent default, number of contracts at period end | loans	2		4
Financing receivable, modifications, subsequent default, recorded investment | $	$ 15		$ 408
Credit Card Receivable
Troubled Debt Restructuring, Debtor, Current Period [Line Items]
Financing receivable, modifications, subsequent default, number of contracts at period end | loans	0		1
Financing receivable, modifications, subsequent default, recorded investment | $	$ 0		$ 1
Credit Card Receivable | Originated Consumer Loans
Troubled Debt Restructuring, Debtor, Current Period [Line Items]
Financing receivable, modifications, subsequent default, number of contracts at period end | loans	0		1
Financing receivable, modifications, subsequent default, recorded investment | $	$ 0		$ 1
Commercial and Industrial
Troubled Debt Restructuring, Debtor, Current Period [Line Items]
Financing receivable, modifications, subsequent default, number of contracts at period end | loans	0		0
Financing receivable, modifications, subsequent default, recorded investment | $	$ 0		$ 0
Commercial and Industrial | Originated Loans
Troubled Debt Restructuring, Debtor, Current Period [Line Items]
Financing receivable, modifications, subsequent default, number of contracts at period end | loans	0		0
Financing receivable, modifications, subsequent default, recorded investment | $	$ 0		$ 0
Commercial and Industrial | Covered Loans
Troubled Debt Restructuring, Debtor, Current Period [Line Items]
Financing receivable, modifications, subsequent default, number of contracts at period end | loans	0		0
Financing receivable, modifications, subsequent default, recorded investment | $	$ 0		$ 0
Commercial and Industrial | Acquired Loans
Troubled Debt Restructuring, Debtor, Current Period [Line Items]
Financing receivable, modifications, subsequent default, number of contracts at period end | loans	0		0
Financing receivable, modifications, subsequent default, recorded investment | $	$ 0		$ 0
Commercial Real Estate
Troubled Debt Restructuring, Debtor, Current Period [Line Items]
Financing receivable, modifications, subsequent default, number of contracts at period end | loans	0		0
Financing receivable, modifications, subsequent default, recorded investment | $	$ 0		$ 0
Commercial Real Estate | Originated Loans
Troubled Debt Restructuring, Debtor, Current Period [Line Items]
Financing receivable, modifications, subsequent default, number of contracts at period end | loans	0		0
Financing receivable, modifications, subsequent default, recorded investment | $	$ 0		$ 0
Commercial Real Estate | Covered Loans
Troubled Debt Restructuring, Debtor, Current Period [Line Items]
Financing receivable, modifications, subsequent default, number of contracts at period end | loans	0		0
Financing receivable, modifications, subsequent default, recorded investment | $	$ 0		$ 0
Commercial Real Estate | Acquired Loans
Troubled Debt Restructuring, Debtor, Current Period [Line Items]
Financing receivable, modifications, subsequent default, number of contracts at period end | loans	0		0
Financing receivable, modifications, subsequent default, recorded investment | $	$ 0		$ 0
Construction Loans
Troubled Debt Restructuring, Debtor, Current Period [Line Items]
Financing receivable, modifications, subsequent default, number of contracts at period end | loans	0		0
Financing receivable, modifications, subsequent default, recorded investment | $	$ 0		$ 0
Construction Loans | Originated Loans
Troubled Debt Restructuring, Debtor, Current Period [Line Items]
Financing receivable, modifications, subsequent default, number of contracts at period end | loans	0		0
Financing receivable, modifications, subsequent default, recorded investment | $	$ 0		$ 0
Construction Loans | Covered Loans
Troubled Debt Restructuring, Debtor, Current Period [Line Items]
Financing receivable, modifications, subsequent default, number of contracts at period end | loans	0		0
Financing receivable, modifications, subsequent default, recorded investment | $	$ 0		$ 0
Construction Loans | Acquired Loans
Troubled Debt Restructuring, Debtor, Current Period [Line Items]
Financing receivable, modifications, subsequent default, number of contracts at period end | loans	0		0
Financing receivable, modifications, subsequent default, recorded investment | $	$ 0		$ 0
Commercial Loan
Troubled Debt Restructuring, Debtor, Current Period [Line Items]
Financing receivable, modifications, subsequent default, number of contracts at period end | loans	0		0
Financing receivable, modifications, subsequent default, recorded investment | $	$ 0		$ 0
Commercial Loan | Originated Loans
Troubled Debt Restructuring, Debtor, Current Period [Line Items]
Financing receivable, modifications, subsequent default, number of contracts at period end | loans	0		0
Financing receivable, modifications, subsequent default, recorded investment | $	$ 0		$ 0
Commercial Loan | Covered Loans
Troubled Debt Restructuring, Debtor, Current Period [Line Items]
Financing receivable, modifications, subsequent default, number of contracts at period end | loans	0		0
Financing receivable, modifications, subsequent default, recorded investment | $	$ 0		$ 0
Commercial Loan | Acquired Loans
Troubled Debt Restructuring, Debtor, Current Period [Line Items]
Financing receivable, modifications, subsequent default, number of contracts at period end | loans	0		0
Financing receivable, modifications, subsequent default, recorded investment | $	$ 0		$ 0
Installment
Troubled Debt Restructuring, Debtor, Current Period [Line Items]
Financing receivable, modifications, subsequent default, number of contracts at period end | loans	2
Financing receivable, modifications, subsequent default, recorded investment | $	$ 15
Installment | Originated Consumer Loans
Troubled Debt Restructuring, Debtor, Current Period [Line Items]
Financing receivable, modifications, subsequent default, number of contracts at period end | loans	2
Financing receivable, modifications, subsequent default, recorded investment | $	$ 15
Installment | Acquired Loans
Troubled Debt Restructuring, Debtor, Current Period [Line Items]
Financing receivable, modifications, subsequent default, number of contracts at period end | loans	0
Financing receivable, modifications, subsequent default, recorded investment | $	$ 0
Consumer Installment
Troubled Debt Restructuring, Debtor, Current Period [Line Items]
Financing receivable, modifications, subsequent default, number of contracts at period end | loans			2
Financing receivable, modifications, subsequent default, recorded investment | $			$ 39
Consumer Installment | Originated Consumer Loans
Troubled Debt Restructuring, Debtor, Current Period [Line Items]
Financing receivable, modifications, subsequent default, number of contracts at period end | loans			1
Financing receivable, modifications, subsequent default, recorded investment | $			$ 6
Consumer Installment | Acquired Loans
Troubled Debt Restructuring, Debtor, Current Period [Line Items]
Financing receivable, modifications, subsequent default, number of contracts at period end | loans		1
Financing receivable, modifications, subsequent default, recorded investment | $		$ 33
Consumer Home Equity Lines Financing Receivable
Troubled Debt Restructuring, Debtor, Current Period [Line Items]
Financing receivable, modifications, subsequent default, number of contracts at period end | loans	0		0
Financing receivable, modifications, subsequent default, recorded investment | $	$ 0		$ 0
Consumer Home Equity Lines Financing Receivable | Originated Consumer Loans
Troubled Debt Restructuring, Debtor, Current Period [Line Items]
Financing receivable, modifications, subsequent default, number of contracts at period end | loans	0		0
Financing receivable, modifications, subsequent default, recorded investment | $	$ 0		$ 0
Consumer Home Equity Lines Financing Receivable | Acquired Loans
Troubled Debt Restructuring, Debtor, Current Period [Line Items]
Financing receivable, modifications, subsequent default, number of contracts at period end | loans	0	0
Financing receivable, modifications, subsequent default, recorded investment | $	$ 0	$ 0
Residential Mortgages
Troubled Debt Restructuring, Debtor, Current Period [Line Items]
Financing receivable, modifications, subsequent default, number of contracts at period end | loans	0		1
Financing receivable, modifications, subsequent default, recorded investment | $	$ 0		$ 368
Residential Mortgages | Originated Consumer Loans
Troubled Debt Restructuring, Debtor, Current Period [Line Items]
Financing receivable, modifications, subsequent default, number of contracts at period end | loans	0		1
Financing receivable, modifications, subsequent default, recorded investment | $	$ 0		$ 368
Residential Mortgages | Acquired Loans
Troubled Debt Restructuring, Debtor, Current Period [Line Items]
Financing receivable, modifications, subsequent default, number of contracts at period end | loans	0	0
Financing receivable, modifications, subsequent default, recorded investment | $	$ 0	$ 0
Total consumer
Troubled Debt Restructuring, Debtor, Current Period [Line Items]
Financing receivable, modifications, subsequent default, number of contracts at period end | loans	2		4
Financing receivable, modifications, subsequent default, recorded investment | $	$ 15		$ 408
Total consumer | Originated Consumer Loans
Troubled Debt Restructuring, Debtor, Current Period [Line Items]
Financing receivable, modifications, subsequent default, number of contracts at period end | loans	2		3
Financing receivable, modifications, subsequent default, recorded investment | $	$ 15		$ 375
Total consumer | Acquired Loans
Troubled Debt Restructuring, Debtor, Current Period [Line Items]
Financing receivable, modifications, subsequent default, number of contracts at period end | loans	0	1
Financing receivable, modifications, subsequent default, recorded investment | $	$ 0	$ 33

Allowance for Loan Losses (Deta

Allowance for Loan Losses (Details Textual) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015	Dec. 31, 2015
Allowance For Loan And Lease Losses [Line Items]
Provision/ (recapture) for loan losses	$ 6,391	$ 8,966	$ 14,200	$ 17,214
Loan Commitments	6,013,698	6,144,177	6,013,698	6,144,177	$ 6,385,147
Minimum Non Performing Substandard Loans Outstanding for Allowance for Credit Losses	300		300
Minimum Non Performing Substandard Doubtful Loans Outstanding for Allowance for Credit Losses	100		100
Impaired Financing Receivable, with No Related Allowance, Interest Income, Cash Basis Method	400	100	600	200
Loans and Leases Receivable, Impaired, Interest Lost on Nonaccrual Loans	1,400	900	2,600	1,800
Acquired Loans
Allowance For Loan And Lease Losses [Line Items]
Provision/ (recapture) for loan losses	400
Financing Receivable, Allowance for Credit Losses, Recovery			(200)
Total impaired loans with no related allowance
Allowance For Loan And Lease Losses [Line Items]
Loan Commitments	$ 200	$ 3,700	$ 200	$ 3,700	$ 7,000

(Accumulated Amortization of In

(Accumulated Amortization of Intangible Assets Schedule) (Details) - USD ($) $ in Thousands	Jun. 30, 2016	Dec. 31, 2015	Jun. 30, 2015
Acquired Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Gross	$ 96,561	$ 96,561	$ 96,561
Finite-Lived Intangible Assets, Accumulated Amortization	(40,541)	(35,933)	(30,737)
Finite-Lived Intangible Assets, Net	56,020	60,628	65,824
Core Deposits
Acquired Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Gross	82,323	82,323	82,323
Finite-Lived Intangible Assets, Accumulated Amortization	(32,083)	(28,304)	(24,150)
Finite-Lived Intangible Assets, Net	50,240	54,019	58,173
Lease Agreements
Acquired Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Gross	238	238	238
Finite-Lived Intangible Assets, Accumulated Amortization	(229)	(212)	(194)
Finite-Lived Intangible Assets, Net	9	26	44
Customer Relationships
Acquired Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Gross	14,000	14,000	14,000
Finite-Lived Intangible Assets, Accumulated Amortization	(8,229)	(7,417)	(6,393)
Finite-Lived Intangible Assets, Net	$ 5,771	$ 6,583	$ 7,607

Goodwill and Other Intangible59

Goodwill and Other Intangible Assets (Details Textual) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015	Dec. 31, 2015
Acquired Finite-Lived Intangible Assets [Line Items]
Goodwill	$ 741,740	$ 741,740	$ 741,740	$ 741,740	$ 741,740
Amortization of intangible assets	2,304	$ 2,598	4,608	$ 5,196
Remainder of 2016	4,600		4,600
2,017	8,200		8,200
2,018	7,300		7,300
2,019	6,500		6,500
2,020	$ 5,200		$ 5,200
Customer Relationships
Acquired Finite-Lived Intangible Assets [Line Items]
Useful Life	12 years
Minimum | Core Deposits
Acquired Finite-Lived Intangible Assets [Line Items]
Useful Life	10 years
Maximum | Core Deposits
Acquired Finite-Lived Intangible Assets [Line Items]
Useful Life	15 years

Shareholders' Equity (Reconcili

Shareholders' Equity (Reconciliation of Basic and Diluted EPS) (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Schedule of Earnings Per Share, Basic and Diluted [Line Items]
Net income	$ 58,309	$ 56,584	$ 112,445	$ 113,723
Preferred Stock dividends	1,469	1,469	2,938	2,938
Less: Net income allocated to participating shareholders	496	467	955	937
Net income attributable to common shareholders	$ 56,344	$ 54,648	$ 108,552	$ 109,848
Weighted average number of common shares outstanding - basic	166,188	165,736	165,966	165,574
Basic earnings per common share (in dollars per share)	$ 0.34	$ 0.33	$ 0.65	$ 0.66
Net Income (Loss) Available to Common Stockholders, Diluted	$ 56,344	$ 54,648	$ 108,552	$ 109,848
Weighted average number of common shares outstanding - diluted	166,807	166,277	166,563	166,089
Diluted earnings per common share (in dollars per share)	$ 0.34	$ 0.33	$ 0.65	$ 0.66
Employee Stock Option
Schedule of Earnings Per Share, Basic and Diluted [Line Items]
Weighted average number of common shares outstanding - diluted	619	541	597	515

Shareholders' Equity (Narrative

Shareholders' Equity (Narrative) (Details) - USD ($) $ / shares in Units, $ in Thousands	May 13, 2015	Jun. 30, 2016	Jun. 30, 2015	Dec. 31, 2015
Shareholders Equity Narrative [Line Items]
Payments for Repurchase of Warrants	$ 12,200	$ 0	$ 12,150
Adjustments to Additional Paid in Capital, Other		$ (9,200)
5.875% Non-Cumulative Perpetual Preferred stock, Series A, authorized 115,000 shares		7,000,000
Non-cumulative Perpetual Preferred Stock, Series A, Shares Authorized		115,000	115,000	115,000
Non-Cumulative Perpetual Preferred stock, Series A, Shares Outstanding		100,000	100,000	100,000
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount		200,000	800,000
Citizens Republic Bancorp
Shareholders Equity Narrative [Line Items]
Interest rate of Non-Cumulative Perpetual Preferred Stock, Series A		5.875%
Citizens Republic Bancorp | Citizens Republic Bancorp
Shareholders Equity Narrative [Line Items]
Class of Warrant or Right, Exercise Price of Warrants or Rights	$ 17.50
FirstMerit | Citizens Republic Bancorp
Shareholders Equity Narrative [Line Items]
Class of Warrant or Right, Number of Securities Called by Warrants or Rights	2,571,998.380

Segment Information (Details)

Segment Information (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
OPERATIONS:
Net interest income	$ 186,078	$ 185,118	$ 371,234	$ 370,741
Provision/ (recapture) for loan losses	6,391	8,966	14,200	17,214
Noninterest Income	65,115	66,582	132,509	132,429
Other expenses	160,320	161,674	327,283	322,326
Net income	58,309	56,584	112,445	113,723
AVERAGES :
Assets	25,923,566	25,129,859	25,846,647	25,015,734
Loans	16,242,902	15,577,361	16,161,173	15,502,686
Earning assets	23,121,303	22,352,721	23,005,692	22,227,267
Deposits	20,967,450	19,682,662	20,801,559	19,735,499
Economic capital	3,012,218	2,892,432	2,991,190	2,879,469
Other
OPERATIONS:
Net interest income	(15,918)	(14,177)	(34,661)	(27,548)
Provision/ (recapture) for loan losses	218	(1,765)	(1,636)	(355)
Noninterest Income	7,125	5,884	15,438	13,528
Other expenses	4,356	(618)	8,251	(3,610)
Net income	(5,293)	54	(9,818)	828
AVERAGES :
Assets	9,638,361	9,449,572	9,639,033	9,374,463
Loans	41,656	60,490	46,706	59,274
Earning assets	6,555,458	6,535,441	6,523,236	6,483,544
Deposits	1,410,044	610,711	1,111,129	573,990
Economic capital	770,591	657,810	742,055	656,765
Commercial Loan | Operating Segments
OPERATIONS:
Net interest income	101,313	101,342	203,932	202,830
Provision/ (recapture) for loan losses	1,070	2,285	6,842	1,759
Noninterest Income	20,782	21,918	41,961	44,408
Other expenses	57,201	61,032	118,221	122,685
Net income	41,486	38,963	78,539	79,816
AVERAGES :
Assets	9,600,103	9,437,824	9,596,152	9,445,975
Loans	9,721,866	9,533,843	9,715,827	9,520,262
Earning assets	10,081,198	9,828,867	10,077,716	9,811,770
Deposits	7,269,121	6,777,434	7,373,805	6,831,887
Economic capital	1,251,845	1,355,049	1,252,069	1,349,289
Retail | Operating Segments
OPERATIONS:
Net interest income	94,369	92,501	189,096	184,527
Provision/ (recapture) for loan losses	5,123	8,447	9,169	15,981
Noninterest Income	22,079	23,964	45,673	45,701
Other expenses	84,880	87,799	173,575	176,070
Net income	17,189	13,142	33,816	24,815
AVERAGES :
Assets	6,370,350	5,951,665	6,301,303	5,898,835
Loans	6,173,352	5,702,015	6,097,054	5,636,666
Earning assets	6,178,619	5,707,400	6,103,154	5,645,469
Deposits	11,003,769	11,105,954	11,014,512	11,115,005
Economic capital	867,958	767,803	870,360	763,446
Wealth | Operating Segments
OPERATIONS:
Net interest income	6,314	5,452	12,867	10,932
Provision/ (recapture) for loan losses	(20)	(1)	(175)	(171)
Noninterest Income	15,129	14,816	29,437	28,792
Other expenses	13,883	13,461	27,236	27,181
Net income	4,927	4,425	9,908	8,264
AVERAGES :
Assets	314,752	290,798	310,159	296,461
Loans	306,028	281,013	301,586	286,484
Earning assets	306,028	281,013	301,586	286,484
Deposits	1,284,516	1,188,563	1,302,113	1,214,617
Economic capital	$ 121,824	$ 111,770	$ 126,706	$ 109,969

Derivatives and Hedging Activ63

Derivatives and Hedging Activities (Designated as Hedging Instruments, Notional Values, Contractual Amounts and Fair Value) (Details) - USD ($) $ in Thousands	Jun. 30, 2016	Dec. 31, 2015	Jun. 30, 2015	Dec. 31, 2014
Derivatives designated in hedge relationships
Derivative Asset, Fair Value	$ 117,842	$ 58,107	$ 48,073
Derivative Liability, Fair Value	90,622	52,745	51,497
Commercial Loan Swaps (FRAPS) | Designated as Hedging Instrument
Derivatives designated in hedge relationships
Derivative Asset, Notional/Contract Amount	0	0	0
Derivative Asset, Fair Value	0	0	0
Derivative Liability, Notional/Contract Amount	50,668	55,689	75,794
Derivative Liability, Fair Value	2,772	3,536	5,104
Sub Debt Swap | Designated as Hedging Instrument
Derivatives designated in hedge relationships
Derivative Asset, Notional/Contract Amount	250,000	250,000	250,000
Derivative Asset, Fair Value	29,760	8,739	1,153
Derivative Liability, Notional/Contract Amount	0	0	0
Derivative Liability, Fair Value	0	0	0
Interest rate swaps | Designated as Hedging Instrument
Derivatives designated in hedge relationships
Derivative Asset, Notional/Contract Amount	250,000	250,000	250,000	$ 250,000
Derivative Asset, Fair Value	29,760	8,739	1,153
Derivative Liability, Notional/Contract Amount	50,668	55,689	75,794
Derivative Liability, Fair Value	2,772	3,536	5,104
Level 2
Derivatives designated in hedge relationships
Derivative Asset, Fair Value	117,842	58,107	48,073
Derivative Liability, Fair Value	90,622	52,745	51,497
Level 2 | Interest rate swaps | Designated as Hedging Instrument
Derivatives designated in hedge relationships
Derivative Asset, Fair Value	29,760	8,739	1,153
Derivative Liability, Fair Value	$ 2,772	$ 3,536	$ 5,104

Derivatives and Hedging Activ64

Derivatives and Hedging Activities (Not Designated as Hedging Instruments, Notional Values, Contractual Amounts and Fair Value) (Details) - USD ($) $ in Thousands	Jun. 30, 2016	Dec. 31, 2015	Jun. 30, 2015
Derivatives not designated in hedge relationships
Derivative Asset, Fair Value	$ 117,842	$ 58,107	$ 48,073
Derivative Liability, Fair Value	90,622	52,745	51,497
Not Designated as Hedging Instrument
Derivatives not designated in hedge relationships
Derivative Asset, Notional/Contract Amount	1,957,441	1,858,882	1,823,511
Derivative Asset, Fair Value	88,082	49,368	46,920
Derivative Liability, Notional/Contract Amount	2,041,068	1,956,287	1,847,653
Derivative Liability, Fair Value	87,850	49,209	46,393
Not Designated as Hedging Instrument | Interest rate swaps
Derivatives not designated in hedge relationships
Derivative Asset, Notional/Contract Amount	1,904,459	1,824,576	1,726,600
Derivative Asset, Fair Value	87,575	48,920	46,216
Derivative Liability, Notional/Contract Amount	1,904,459	1,824,576	1,726,600
Derivative Liability, Fair Value	87,575	48,920	46,216
Not Designated as Hedging Instrument | Mortgage loan commitments
Derivatives not designated in hedge relationships
Derivative Asset, Notional/Contract Amount	32,802	20,635	52,024
Derivative Asset, Fair Value	253	149	342
Derivative Liability, Notional/Contract Amount	0	0	0
Derivative Liability, Fair Value	0	0	0
Not Designated as Hedging Instrument | Forward sales contracts
Derivatives not designated in hedge relationships
Derivative Asset, Notional/Contract Amount	0	0	15,200
Derivative Asset, Fair Value		0	106
Derivative Liability, Notional/Contract Amount	8,059	9,659	0
Derivative Liability, Fair Value	61	5	0
Not Designated as Hedging Instrument | Credit Risk Contract
Derivatives not designated in hedge relationships
Derivative Asset, Notional/Contract Amount	0	0	0
Derivative Asset, Fair Value	0	0	0
Derivative Liability, Notional/Contract Amount	74,945	73,715	73,512
Derivative Liability, Fair Value	7	0	0
Not Designated as Hedging Instrument | Equity Swap
Derivatives not designated in hedge relationships
Derivative Asset, Notional/Contract Amount	0	0	0
Derivative Asset, Fair Value	0	0	0
Derivative Liability, Notional/Contract Amount	35,034	36,631	31,718
Derivative Liability, Fair Value	0	0	0
Not Designated as Hedging Instrument | Foreign Exchange
Derivatives not designated in hedge relationships
Derivative Asset, Notional/Contract Amount	20,180	13,671	29,687
Derivative Asset, Fair Value	254	299	256
Derivative Liability, Notional/Contract Amount	18,571	11,706	15,823
Derivative Liability, Fair Value	207	284	177
Level 2
Derivatives not designated in hedge relationships
Derivative Asset, Fair Value	117,842	58,107	48,073
Derivative Liability, Fair Value	90,622	52,745	51,497
Level 2 | Not Designated as Hedging Instrument
Derivatives not designated in hedge relationships
Derivative Asset, Fair Value	0
Level 2 | Not Designated as Hedging Instrument | Interest rate swaps
Derivatives not designated in hedge relationships
Derivative Asset, Fair Value	87,575	48,920	46,216
Derivative Liability, Fair Value	87,575	48,920	46,216
Level 2 | Not Designated as Hedging Instrument | Mortgage loan commitments
Derivatives not designated in hedge relationships
Derivative Asset, Fair Value	253	149	342
Level 2 | Not Designated as Hedging Instrument | Forward sales contracts
Derivatives not designated in hedge relationships
Derivative Asset, Fair Value			106
Derivative Liability, Fair Value	61	5
Level 2 | Not Designated as Hedging Instrument | Credit Risk Contract
Derivatives not designated in hedge relationships
Derivative Liability, Fair Value	7
Level 2 | Not Designated as Hedging Instrument | Foreign Exchange
Derivatives not designated in hedge relationships
Derivative Asset, Fair Value	254	299	256
Derivative Liability, Fair Value	$ 207	$ 284	$ 177

Derivatives and Hedging Activ65

Derivatives and Hedging Activities (Gains and Losses Recognized) (Details) - Not Designated as Hedging Instrument - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Derivative Instruments, Gain (Loss) [Line Items]
Gains and losses recognized in income on derivatives	$ 798	$ 294	$ 1,634	$ (1,400)
Mortgage loan commitments | Loan Sales and Servicing Income
Derivative Instruments, Gain (Loss) [Line Items]
Gains and losses recognized in income on derivatives	12	(46)	105	(1,066)
Forward sales contracts | Loan Sales and Servicing Income
Derivative Instruments, Gain (Loss) [Line Items]
Gains and losses recognized in income on derivatives	20	175	(56)	378
Credit Risk Contract | Other income
Derivative Instruments, Gain (Loss) [Line Items]
Gains and losses recognized in income on derivatives	766	165	1,585	(712)
Other Credit Derivatives | Other Expenses
Derivative Instruments, Gain (Loss) [Line Items]
Gains and losses recognized in income on derivatives	$ 0	$ 0	$ 0	$ 0

Derivatives and Hedging Activ66

Derivatives and Hedging Activities (Offsetting Disclosure for Derivative Contracts) (Details) - USD ($) $ in Thousands	Jun. 30, 2016	Dec. 31, 2015	Jun. 30, 2015
Offsetting Disclosure for Derivative Contracts [Line Items]
Offsetting disclosure, derivative asset, fair value, gross	$ 29,839	$ 9,164	$ 1,731
Offsetting disclosure, offset amount, derivative asset, fair value, gross	0	0	0
Offsetting disclosure, net amount, derivative asset, falir value	29,839	9,164	1,731
Offseting disclosure, netting adjustment, derivative asset, fair value	(79)	(187)	(463)
Offsetting disclosure, collateral value, derivative asset	0	(238)	(115)
Offsetting disclosure, net amount total, derivative asset, fair value	29,760	8,739	1,153
Offsetting disclosure, derivative liability, fair value, gross	90,475	52,333	50,955
Offsetting disclosure, offset amount, derivative liability, fair value, gross	0	0	0
Offsetting disclosure, net amount, derivative liability, falir value	90,475	52,333	50,955
Offseting disclosure, netting adjustment, derivative liability, fair value	(79)	(187)	(463)
Offsetting disclosure, collateral value, derivative liability	(90,396)	(52,146)	(50,492)
Offsetting disclosure, net amount total, derivative liability, fair value	0	0	0
Designated as Hedging Instrument | Interest Rate Swap
Offsetting Disclosure for Derivative Contracts [Line Items]
Offsetting disclosure, derivative asset, fair value, gross	29,760	8,739	1,153
Offsetting disclosure, offset amount, derivative asset, fair value, gross	0	0	0
Offsetting disclosure, net amount, derivative asset, falir value	29,760	8,739	1,153
Offseting disclosure, netting adjustment, derivative asset, fair value	0	0	0
Offsetting disclosure, collateral value, derivative asset	0	0	0
Offsetting disclosure, net amount total, derivative asset, fair value	29,760	8,739	1,153
Offsetting disclosure, derivative liability, fair value, gross	2,772	3,536	5,104
Offsetting disclosure, offset amount, derivative liability, fair value, gross	0	0	0
Offsetting disclosure, net amount, derivative liability, falir value	2,772	3,536	5,104
Offseting disclosure, netting adjustment, derivative liability, fair value	0	0	0
Offsetting disclosure, collateral value, derivative liability	(2,772)	(3,536)	(5,104)
Offsetting disclosure, net amount total, derivative liability, fair value	0	0	0
Not Designated as Hedging Instrument | Interest Rate Swap
Offsetting Disclosure for Derivative Contracts [Line Items]
Offsetting disclosure, derivative asset, fair value, gross	3	155	414
Offsetting disclosure, offset amount, derivative asset, fair value, gross	0	0	0
Offsetting disclosure, net amount, derivative asset, falir value	3	155	414
Offseting disclosure, netting adjustment, derivative asset, fair value	(3)	(155)	(414)
Offsetting disclosure, collateral value, derivative asset	0	0	0
Offsetting disclosure, net amount total, derivative asset, fair value	0	0	0
Offsetting disclosure, derivative liability, fair value, gross	87,572	48,765	45,802
Offsetting disclosure, offset amount, derivative liability, fair value, gross	0	0	0
Offsetting disclosure, net amount, derivative liability, falir value	87,572	48,765	45,802
Offseting disclosure, netting adjustment, derivative liability, fair value	(3)	(155)	(414)
Offsetting disclosure, collateral value, derivative liability	(87,569)	(48,610)	(45,388)
Offsetting disclosure, net amount total, derivative liability, fair value	0	0	0
Not Designated as Hedging Instrument | Foreign Exchange Contract
Offsetting Disclosure for Derivative Contracts [Line Items]
Offsetting disclosure, derivative asset, fair value, gross	76	270	164
Offsetting disclosure, offset amount, derivative asset, fair value, gross	0	0	0
Offsetting disclosure, net amount, derivative asset, falir value	76	270	164
Offseting disclosure, netting adjustment, derivative asset, fair value	(76)	(32)	(49)
Offsetting disclosure, collateral value, derivative asset	0	(238)	(115)
Offsetting disclosure, net amount total, derivative asset, fair value	0	0	0
Offsetting disclosure, derivative liability, fair value, gross	131	32	49
Offsetting disclosure, offset amount, derivative liability, fair value, gross	0	0	0
Offsetting disclosure, net amount, derivative liability, falir value	131	32	49
Offseting disclosure, netting adjustment, derivative liability, fair value	(76)	(32)	(49)
Offsetting disclosure, collateral value, derivative liability	(55)	0	0
Offsetting disclosure, net amount total, derivative liability, fair value	$ 0	$ 0	$ 0

Derivatives and Hedging Activ67

Derivatives and Hedging Activities (Narrative) (Details) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2016	Dec. 31, 2015	Jun. 30, 2015	Dec. 31, 2014
Derivative [Line Items]
Term of written loan commitments, days	60
Default assumptions percentage	100.00%
Credit derivative, maximum exposure, undiscounted	$ 7,100
Government Agency Issued Bonds or MBS
Derivative [Line Items]
Collateral posted against derivative liabilities	55,900	$ 47,200	$ 45,600
Designated as Hedging Instrument | Interest Rate Swap
Derivative [Line Items]
Derivative asset, notional amount	$ 250,000	$ 250,000	$ 250,000	$ 250,000
Minimum | Equity Swap
Derivative [Line Items]
Maturity of credit risk derivatives	2 years
Minimum | Credit Risk Contract
Derivative [Line Items]
Maturity of credit risk derivatives	1 year
Maximum | Equity Swap
Derivative [Line Items]
Maturity of credit risk derivatives	7 years
Maximum | Credit Risk Contract
Derivative [Line Items]
Maturity of credit risk derivatives	9 years

Benefit Plans (Schedule of Net

Benefit Plans (Schedule of Net Benefit Costs Details) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Pension Plan, Defined Benefit
Defined Benefit Plan Disclosure [Line Items]
Service cost	$ 198	$ 207	$ 396	$ 415
Interest cost	3,649	3,517	7,298	7,035
Expected return on assets	(3,788)	(3,902)	(7,576)	(7,804)
Amortization of unrecognized prior service costs	75	570	150	1,140
Amortization of actuarial losses/(gains)	830	1,057	1,660	2,113
Net periodic pension cost	964	1,449	1,928	2,899
Other Postretirement Benefit Plans, Defined Benefit
Defined Benefit Plan Disclosure [Line Items]
Service cost	26	41	52	83
Interest cost	64	144	127	288
Amortization of unrecognized prior service costs	(636)	(160)	(1,271)	(319)
Amortization of actuarial losses/(gains)	245	81	490	163
Net periodic pension cost	$ (301)	$ 106	$ (602)	$ 215

Fair Value Measurement (Recurri

Fair Value Measurement (Recurring and Nonrecurring Table) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended		12 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015	Dec. 31, 2015	Mar. 31, 2016	Mar. 31, 2015	Dec. 31, 2014
Recurring Fair Value Measurements
Available-for-sale	$ 4,318,688	$ 3,838,509	$ 4,318,688	$ 3,838,509	$ 3,967,735
Residential loans held for sale	3,962	5,432	3,962	5,432	5,472
Derivative Asset, Fair Value, Gross Asset	117,842	48,073	117,842	48,073	58,107
Total Assets, Fair Value Disclosure, Recurring	4,440,492	3,892,014	4,440,492	3,892,014	4,031,314
Derivative Liability, Fair Value, Gross Liability	90,622	51,497	90,622	51,497	52,745
True Up Liability	16,170	13,408	16,170	13,408	14,750
Total liabilities at fair value on a recurring basis	106,792	64,905	106,792	64,905	67,495
Nonrecurring Fair Value Measurements [Abstract]
Fair Value of Mortgage Servicing Rights	15,954	20,809	15,954	20,809	19,149
Impaired and Non Accrual Loans Fair Value Disclosure	104,208	72,580	104,208	72,580	71,428
Other Real Estate, Non Covered	10,027	33,078	10,027	33,078	18,576
Other Real Estate Covered by Loss Share	4	4	4	4	365
Nonrecurring Fair Value	130,193	126,471	130,193	126,471	109,518
Mortgage Servicing Rights	17,310	20,635	17,310	20,635	18,938	$ 18,127	$ 21,490	$ 22,011
Mortgage Servicing rights Valuation Allowance	(1,549)	(490)	(1,549)	(490)	(399)	$ (868)	$ (1,131)	$ (955)
Mortgage Servicing Rights Net Carrying balance	15,761	20,145	15,761	20,145	18,500
Mortgage Servicing Rights (MSR) Impairment (Recovery)	(681)	641	(1,150)	465	600
Impairment of Noncovered Other Real Estate Owned		2,100			4,500
Impairment of Covered Other Real Esate Owned		200			600
Impaired Collateral Dependant Loans, Recorded Investment	116,100	82,700	116,100	82,700	84,300
Determination Of Specific Allowance For Loan Losses	(11,900)	(10,200)	(11,900)	(10,200)	(12,900)
Collateral Dependant Impaired and Non Accrual Loans Carrying Amount	104,200	72,600	104,200	72,600	71,400
Foreclosed Real Estate Expense	700
Level 1
Recurring Fair Value Measurements
Available-for-sale	2,788	2,824	2,788	2,824	2,821
Residential loans held for sale	0	0	0	0	0
Derivative Asset, Fair Value, Gross Asset	0	0	0	0	0
Total Assets, Fair Value Disclosure, Recurring	2,788	2,824	2,788	2,824	2,821
Derivative Liability, Fair Value, Gross Liability	0	0	0	0	0
True Up Liability	0	0	0	0	0
Total liabilities at fair value on a recurring basis	0	0	0	0	0
Nonrecurring Fair Value Measurements [Abstract]
Fair Value of Mortgage Servicing Rights	0	0	0	0	0
Impaired and Non Accrual Loans Fair Value Disclosure	0	0	0	0	0
Other Real Estate, Non Covered	0	0	0	0	0
Other Real Estate Covered by Loss Share	0	0	0	0	0
Nonrecurring Fair Value	0	0	0	0	0
Level 2
Recurring Fair Value Measurements
Available-for-sale	3,972,996	3,524,149	3,972,996	3,524,149	3,623,270
Residential loans held for sale	3,962	5,432	3,962	5,432	5,472
Derivative Asset, Fair Value, Gross Asset	117,842	48,073	117,842	48,073	58,107
Total Assets, Fair Value Disclosure, Recurring	4,094,800	3,577,654	4,094,800	3,577,654	3,686,849
Derivative Liability, Fair Value, Gross Liability	90,622	51,497	90,622	51,497	52,745
True Up Liability	0	0	0	0	0
Total liabilities at fair value on a recurring basis	90,622	51,497	90,622	51,497	52,745
Nonrecurring Fair Value Measurements [Abstract]
Fair Value of Mortgage Servicing Rights	0	0	0	0	0
Impaired and Non Accrual Loans Fair Value Disclosure	0	0	0	0	0
Other Real Estate, Non Covered	0	0	0	0	0
Other Real Estate Covered by Loss Share	0	0	0	0	0
Nonrecurring Fair Value	0	0	0	0	0
Level 3
Recurring Fair Value Measurements
Available-for-sale	342,904	311,536	342,904	311,536	341,644
Residential loans held for sale	0	0	0	0	0
Derivative Asset, Fair Value, Gross Asset	0	0	0	0	0
Total Assets, Fair Value Disclosure, Recurring	342,904	311,536	342,904	311,536	341,644
Derivative Liability, Fair Value, Gross Liability	0	0	0	0	0
True Up Liability	16,170	13,408	16,170	13,408	14,750
Total liabilities at fair value on a recurring basis	16,170	13,408	16,170	13,408	14,750
Nonrecurring Fair Value Measurements [Abstract]
Fair Value of Mortgage Servicing Rights	15,954	20,809	15,954	20,809	19,149
Impaired and Non Accrual Loans Fair Value Disclosure	104,208	72,580	104,208	72,580	71,428
Other Real Estate, Non Covered	10,027	33,078	10,027	33,078	18,576
Other Real Estate Covered by Loss Share	4	4	4	4	365
Nonrecurring Fair Value	130,193	126,471	130,193	126,471	109,518
US Treasury Securities
Recurring Fair Value Measurements
Available-for-sale	4,997	5,005	4,997	5,005	5,000
US Treasury Securities | Level 1
Recurring Fair Value Measurements
Available-for-sale	0		0
US Treasury Securities | Level 2
Recurring Fair Value Measurements
Available-for-sale	4,997		4,997
US Treasury Securities | Level 3
Recurring Fair Value Measurements
Available-for-sale	0		0
Equity Securities
Recurring Fair Value Measurements
Available-for-sale	2,788	2,824	2,788	2,824	2,821
Equity Securities | Level 1
Recurring Fair Value Measurements
Available-for-sale		2,824		2,824	2,821
Equity Securities | Level 2
Recurring Fair Value Measurements
Available-for-sale		0		0	0
Equity Securities | Level 3
Recurring Fair Value Measurements
Available-for-sale		0		0	0
US Government Agency Debentures
Recurring Fair Value Measurements
Available-for-sale		2,510		2,510
US Government Agency Debentures | Level 1
Recurring Fair Value Measurements
Available-for-sale		0		0
US Government Agency Debentures | Level 2
Recurring Fair Value Measurements
Available-for-sale		2,510		2,510
US Government Agency Debentures | Level 3
Recurring Fair Value Measurements
Available-for-sale		0		0
Non-marketable Equity Securities
Recurring Fair Value Measurements
Available-for-sale		5,005		5,005	5,000
Non-marketable Equity Securities | Level 1
Recurring Fair Value Measurements
Available-for-sale		0		0	0
Non-marketable Equity Securities | Level 2
Recurring Fair Value Measurements
Available-for-sale		5,005		5,005	5,000
Non-marketable Equity Securities | Level 3
Recurring Fair Value Measurements
Available-for-sale		0		0	0
Marketable Equity Securities
Recurring Fair Value Measurements
Available-for-sale	2,788	2,824	2,788	2,824	2,821
Marketable Equity Securities | Level 1
Recurring Fair Value Measurements
Available-for-sale	2,788		2,788
Marketable Equity Securities | Level 2
Recurring Fair Value Measurements
Available-for-sale	0		0
Marketable Equity Securities | Level 3
Recurring Fair Value Measurements
Available-for-sale	0		0
US Government Agencies Debt Securities
Recurring Fair Value Measurements
Available-for-sale	2,528	2,510	2,528	2,510	2,498
US Government Agencies Debt Securities | Level 1
Recurring Fair Value Measurements
Available-for-sale	0		0
US Government Agencies Debt Securities | Level 2
Recurring Fair Value Measurements
Available-for-sale	2,528		2,528		2,498
US Government Agencies Debt Securities | Level 3
Recurring Fair Value Measurements
Available-for-sale	0		0
U.S. States and political subdivisions debt securities
Recurring Fair Value Measurements
Available-for-sale	151,547	207,617	151,547	207,617	192,795
U.S. States and political subdivisions debt securities | Level 1
Recurring Fair Value Measurements
Available-for-sale	0	0	0	0	0
U.S. States and political subdivisions debt securities | Level 2
Recurring Fair Value Measurements
Available-for-sale	151,547	207,617	151,547	207,617	192,795
U.S. States and political subdivisions debt securities | Level 3
Recurring Fair Value Measurements
Available-for-sale	0	0	0	0	0
Residential Mortgage Backed Securities Issued by US Government Sponsored Enterprises
Recurring Fair Value Measurements
Available-for-sale	860,247	960,852	860,247	960,852	906,229
Residential Mortgage Backed Securities Issued by US Government Sponsored Enterprises | Level 1
Recurring Fair Value Measurements
Available-for-sale	0	0	0	0	0
Residential Mortgage Backed Securities Issued by US Government Sponsored Enterprises | Level 2
Recurring Fair Value Measurements
Available-for-sale		960,852		960,852	906,229
Residential Mortgage Backed Securities Issued by US Government Sponsored Enterprises | Level 3
Recurring Fair Value Measurements
Available-for-sale	0	0	0	0	0
Commercial Mortgage Backed Securities Issued by US Government Sponsored Enterprises
Recurring Fair Value Measurements
Available-for-sale	202,048	170,338	202,048	170,338	172,109
Commercial Mortgage Backed Securities Issued by US Government Sponsored Enterprises | Level 1
Recurring Fair Value Measurements
Available-for-sale	0	0	0	0	0
Commercial Mortgage Backed Securities Issued by US Government Sponsored Enterprises | Level 2
Recurring Fair Value Measurements
Available-for-sale		170,338		170,338	172,109
Commercial Mortgage Backed Securities Issued by US Government Sponsored Enterprises | Level 3
Recurring Fair Value Measurements
Available-for-sale	0	0	0	0	0
Residential Collateralized Mortgage-Backed Securities Issued by US Government Sponsored Enterprises
Recurring Fair Value Measurements
Available-for-sale	2,353,018	1,949,389	2,353,018	1,949,389	2,128,320
Residential Collateralized Mortgage-Backed Securities Issued by US Government Sponsored Enterprises | Level 1
Recurring Fair Value Measurements
Available-for-sale	0	0	0	0	0
Residential Collateralized Mortgage-Backed Securities Issued by US Government Sponsored Enterprises | Level 2
Recurring Fair Value Measurements
Available-for-sale		1,949,389		1,949,389	2,128,320
Residential Collateralized Mortgage-Backed Securities Issued by US Government Sponsored Enterprises | Level 3
Recurring Fair Value Measurements
Available-for-sale	0	0	0	0	0
Residential Collateralized Mortgage-Backed Securities Issued by Non-US Government Agency
Recurring Fair Value Measurements
Available-for-sale	3	5	3	5	4
Residential Collateralized Mortgage-Backed Securities Issued by Non-US Government Agency | Level 1
Recurring Fair Value Measurements
Available-for-sale	0	0	0	0	0
Residential Collateralized Mortgage-Backed Securities Issued by Non-US Government Agency | Level 2
Recurring Fair Value Measurements
Available-for-sale	0	0	0	0	0
Residential Collateralized Mortgage-Backed Securities Issued by Non-US Government Agency | Level 3
Recurring Fair Value Measurements
Available-for-sale	3	5	3	5	4
Commercial Collateralized Mortgage Backed Securities Issued by US Government Sponsored Enterprises
Recurring Fair Value Measurements
Available-for-sale	398,611	228,438	398,611	228,438	216,319
Commercial Collateralized Mortgage Backed Securities Issued by US Government Sponsored Enterprises | Level 1
Recurring Fair Value Measurements
Available-for-sale	0	0	0	0	0
Commercial Collateralized Mortgage Backed Securities Issued by US Government Sponsored Enterprises | Level 2
Recurring Fair Value Measurements
Available-for-sale		228,438		228,438	216,319
Commercial Collateralized Mortgage Backed Securities Issued by US Government Sponsored Enterprises | Level 3
Recurring Fair Value Measurements
Available-for-sale	0	0	0	0	0
Corporate debt securities
Recurring Fair Value Measurements
Available-for-sale	51,107	53,450	51,107	53,450	52,229
Corporate debt securities | Level 1
Recurring Fair Value Measurements
Available-for-sale	0	0	0	0	0
Corporate debt securities | Level 2
Recurring Fair Value Measurements
Available-for-sale	0	0	0	0	0
Corporate debt securities | Level 3
Recurring Fair Value Measurements
Available-for-sale		53,450		53,450	52,229
Collateralized Loan Obligations
Recurring Fair Value Measurements
Available-for-sale	291,794	258,081	291,794	258,081	289,411
Collateralized Loan Obligations | Level 1
Recurring Fair Value Measurements
Available-for-sale	0	0	0	0	0
Collateralized Loan Obligations | Level 2
Recurring Fair Value Measurements
Available-for-sale	0	0	0	0	0
Collateralized Loan Obligations | Level 3
Recurring Fair Value Measurements
Available-for-sale	291,794	258,081	291,794	258,081	289,411
Not Designated as Hedging Instrument
Recurring Fair Value Measurements
Derivative Asset, Fair Value, Gross Asset	88,082	46,920	88,082	46,920	49,368
Derivative Liability, Fair Value, Gross Liability	87,850	46,393	87,850	46,393	49,209
Not Designated as Hedging Instrument | Level 2
Recurring Fair Value Measurements
Derivative Asset, Fair Value, Gross Asset	0		0
Interest Rate Swap | Designated as Hedging Instrument
Recurring Fair Value Measurements
Derivative Asset, Fair Value, Gross Asset	29,760	1,153	29,760	1,153	8,739
Derivative Liability, Fair Value, Gross Liability	2,772	5,104	2,772	5,104	3,536
Interest Rate Swap | Designated as Hedging Instrument | Level 1
Recurring Fair Value Measurements
Derivative Asset, Fair Value, Gross Asset	0	0	0	0	0
Derivative Liability, Fair Value, Gross Liability	0	0	0	0	0
Interest Rate Swap | Designated as Hedging Instrument | Level 2
Recurring Fair Value Measurements
Derivative Asset, Fair Value, Gross Asset	29,760	1,153	29,760	1,153	8,739
Derivative Liability, Fair Value, Gross Liability	2,772	5,104	2,772	5,104	3,536
Interest Rate Swap | Designated as Hedging Instrument | Level 3
Recurring Fair Value Measurements
Derivative Asset, Fair Value, Gross Asset	0	0	0	0	0
Derivative Liability, Fair Value, Gross Liability	0	0	0	0	0
Interest Rate Swap | Not Designated as Hedging Instrument
Recurring Fair Value Measurements
Derivative Asset, Fair Value, Gross Asset	87,575	46,216	87,575	46,216	48,920
Derivative Liability, Fair Value, Gross Liability	87,575	46,216	87,575	46,216	48,920
Interest Rate Swap | Not Designated as Hedging Instrument | Level 1
Recurring Fair Value Measurements
Derivative Asset, Fair Value, Gross Asset	0	0	0	0	0
Derivative Liability, Fair Value, Gross Liability	0	0	0	0	0
Interest Rate Swap | Not Designated as Hedging Instrument | Level 2
Recurring Fair Value Measurements
Derivative Asset, Fair Value, Gross Asset	87,575	46,216	87,575	46,216	48,920
Derivative Liability, Fair Value, Gross Liability	87,575	46,216	87,575	46,216	48,920
Interest Rate Swap | Not Designated as Hedging Instrument | Level 3
Recurring Fair Value Measurements
Derivative Asset, Fair Value, Gross Asset	0	0	0	0	0
Derivative Liability, Fair Value, Gross Liability	0	0	0	0	0
Mortgage Loan Commitments | Not Designated as Hedging Instrument
Recurring Fair Value Measurements
Derivative Asset, Fair Value, Gross Asset	253	342	253	342	149
Derivative Liability, Fair Value, Gross Liability	0	0	0	0	0
Mortgage Loan Commitments | Not Designated as Hedging Instrument | Level 1
Recurring Fair Value Measurements
Derivative Asset, Fair Value, Gross Asset	0	0	0	0	0
Mortgage Loan Commitments | Not Designated as Hedging Instrument | Level 2
Recurring Fair Value Measurements
Derivative Asset, Fair Value, Gross Asset	253	342	253	342	149
Mortgage Loan Commitments | Not Designated as Hedging Instrument | Level 3
Recurring Fair Value Measurements
Derivative Asset, Fair Value, Gross Asset	0	0	0	0	0
Forward sales contracts | Not Designated as Hedging Instrument
Recurring Fair Value Measurements
Derivative Asset, Fair Value, Gross Asset		106		106	0
Derivative Liability, Fair Value, Gross Liability	61	0	61	0	5
Forward sales contracts | Not Designated as Hedging Instrument | Level 1
Recurring Fair Value Measurements
Derivative Asset, Fair Value, Gross Asset		0		0
Derivative Liability, Fair Value, Gross Liability	0		0		0
Forward sales contracts | Not Designated as Hedging Instrument | Level 2
Recurring Fair Value Measurements
Derivative Asset, Fair Value, Gross Asset		106		106
Derivative Liability, Fair Value, Gross Liability	61		61		5
Forward sales contracts | Not Designated as Hedging Instrument | Level 3
Recurring Fair Value Measurements
Derivative Asset, Fair Value, Gross Asset		0		0
Derivative Liability, Fair Value, Gross Liability	0		0		0
Credit Risk Contract | Not Designated as Hedging Instrument
Recurring Fair Value Measurements
Derivative Asset, Fair Value, Gross Asset	0	0	0	0	0
Derivative Liability, Fair Value, Gross Liability	7	0	7	0	0
Credit Risk Contract | Not Designated as Hedging Instrument | Level 1
Recurring Fair Value Measurements
Derivative Liability, Fair Value, Gross Liability	0		0
Credit Risk Contract | Not Designated as Hedging Instrument | Level 2
Recurring Fair Value Measurements
Derivative Liability, Fair Value, Gross Liability	7		7
Credit Risk Contract | Not Designated as Hedging Instrument | Level 3
Recurring Fair Value Measurements
Derivative Liability, Fair Value, Gross Liability	0		0
Foreign Exchange | Not Designated as Hedging Instrument
Recurring Fair Value Measurements
Derivative Asset, Fair Value, Gross Asset	254	256	254	256	299
Derivative Liability, Fair Value, Gross Liability	207	177	207	177	284
Foreign Exchange | Not Designated as Hedging Instrument | Level 1
Recurring Fair Value Measurements
Derivative Asset, Fair Value, Gross Asset	0	0	0	0	0
Derivative Liability, Fair Value, Gross Liability	0	0	0	0	0
Foreign Exchange | Not Designated as Hedging Instrument | Level 2
Recurring Fair Value Measurements
Derivative Asset, Fair Value, Gross Asset	254	256	254	256	299
Derivative Liability, Fair Value, Gross Liability	207	177	207	177	284
Foreign Exchange | Not Designated as Hedging Instrument | Level 3
Recurring Fair Value Measurements
Derivative Asset, Fair Value, Gross Asset	0	0	0	0	0
Derivative Liability, Fair Value, Gross Liability	$ 0	$ 0	$ 0	$ 0	$ 0

Fair Value Measurement (Changes

Fair Value Measurement (Changes in Level 3 Table) (Details) - USD ($) $ in Thousands		3 Months Ended			6 Months Ended
		Jun. 30, 2016	Jun. 30, 2015		Jun. 30, 2016	Jun. 30, 2015
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Available-for-sale securities, Beginning balance		$ 334,157	$ 346,685		$ 341,644	$ 339,187
Available-for-sale securities, (Gains) losses included in earnings	[1]	0	0		0	0
Available-for-sale securities, Unrealized gains (losses)	[2]	8,926	4,561		1,370	11,697
Available-for-sale securities, Purchases		0	41,509		0	41,509
Available-for-sale securities, Sales		0	(71,832)		0	(71,832)
Available-for-sale securities, Settlements		(179)	(9,387)		(110)	(9,025)
Available-for-sale securities, Ending balance		342,904	311,536		342,904	311,536
True-up liability, Beginning balance		15,115	13,707		14,750	13,294
True-up liability, (Gains) losses included in earnings		(1,055)	299	[1]	(1,420)	(114)	[1]
True-up liability, Unrealized gains (losses)	[2]	0	0		0	0
True-up liability, Purchases		0	0		0	0
True-up liability, Sales		0	0		0	0
True-up liability, Settlements		0	0		0	0
True-up liability, Ending balance		$ 16,170	$ 13,408		$ 16,170	$ 13,408
[1]	Reported in "Other expense
[2]	Reported in "Other comprehensive income (loss)

Fair Value Measurement (Summary

Fair Value Measurement (Summary of Change in Fair Value Carrying Amount of Residential Mortgages ) (Details) - USD ($) $ in Thousands	Jun. 30, 2016	Dec. 31, 2015	Jun. 30, 2015
Fair Value of Assets Loans Receivable Aggregate Unpaid Principal [Line Items]
Loans held for sale	$ 3,962	$ 5,472	$ 5,432
Aggregate Fair Value
Fair Value of Assets Loans Receivable Aggregate Unpaid Principal [Line Items]
Loans held for sale		5,472	5,432
Contractual Balance
Fair Value of Assets Loans Receivable Aggregate Unpaid Principal [Line Items]
Loans held for sale	3,836	5,320	5,285
Fair Value, Option, Loans Held as Assets, Aggregate Difference	$ 126	$ 152	$ 147

Fair Value Measurement (Fair Va

Fair Value Measurement (Fair Value Disclosure by Balance Sheet Grouping ) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended		12 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015	Dec. 31, 2015	Mar. 31, 2016	Mar. 31, 2015	Dec. 31, 2014
Financial assets:
Cash and Cash Equivalents, at Carrying Value	$ 524,287	$ 587,589	$ 524,287	$ 587,589	$ 463,817			$ 697,424
Cash and due from banks, Fair Value	524,287	587,589	524,287	587,589	463,817
Available-for-sale Securities, Carrying Amount	4,318,688	3,838,509	4,318,688	3,838,509	3,967,735
Held-to-maturity Securities, Carrying Amount	2,514,161	2,787,513	2,514,161	2,787,513	2,674,093
Held-to-maturity Securities, Fair Value	2,545,740	2,760,120	2,545,740	2,760,120	2,659,119
Other Investments, Carrying Amount	148,367	147,967	148,367	147,967	148,172
Other Investments, Fair Value	148,367	147,967	148,367	147,967	148,172
Loans held for sale	3,962	5,432	3,962	5,432	5,472
Loans and Leases Receivable, Net Amount	16,193,957	15,556,851	16,193,957	15,556,851	15,923,254
Net covered loans and loss share receivable, Fair Value	149,121	211,887	149,121	211,887	170,690
Accrued interest receivable, Carrying Amount	65,666	66,501	65,666	66,501	67,887
Accrued interest receivable, Fair Value	65,666	66,501	65,666	66,501	67,887
Derivative Assets, Carrying Amount	117,842	48,073	117,842	48,073	58,107
Derivative Asset, Fair Value, Gross Asset	117,842	48,073	117,842	48,073	58,107
Financial liabilities:
Deposits, Carrying Amount	20,952,643	19,673,850	20,952,643	19,673,850	20,108,003
Deposits, Fair Value	20,960,182	19,681,270	20,960,182	19,681,270	20,116,298
Total Federal funds purchased and securities sold under agreements to repurchase, Carrying Amount	686,890	1,519,250	686,890	1,519,250	1,037,075
Federal funds purchased and securities sold under agreements to repurchase, Fair Value	686,890	1,519,250	686,890	1,519,250	1,037,075
Wholesale Borrowings, Carrying Amount	468,447	366,074	468,447	366,074	580,648
Other Borrowings, Fair Value	473,187	369,337	473,187	369,337	582,120
Long-term Debt	526,389	497,393	526,389	497,393	505,173
Long-term Debt, Fair Value	522,151	509,900	522,151	509,900	503,675
Accrued interest payable, Carrying Amount	10,632	9,910	10,632	9,910	10,758
Accrued interest payable, Fair Value	10,632	9,910	10,632	9,910	10,758
Derivative liabilities, Carrying Amount	90,622	51,497	90,622	51,497	52,745
Derivative Liability, Fair Value, Gross Liability	90,622	51,497	90,622	51,497	52,745
Mortgage Servicing rights Valuation Allowance	(1,549)	(490)	(1,549)	(490)	(399)	$ (868)	$ (1,131)	$ (955)
Mortgage Servicing Rights Net Carrying balance	15,761	20,145	15,761	20,145	18,500
Mortgage Servicing Rights (MSR) Impairment (Recovery)	681	(641)	1,150	(465)	(600)
Impaired Collateral Dependant Loans, Recorded Investment	116,100	82,700	116,100	82,700	84,300
Determination Of Specific Allowance For Loan Losses	11,900	10,200	11,900	10,200	12,900
Fair Value, Inputs, Level 1
Financial assets:
Cash and due from banks, Fair Value		587,589		587,589	463,817
Available-for-sale Securities, Carrying Amount	2,788	2,824	2,788	2,824	2,821
Held-to-maturity Securities, Fair Value	0	0	0	0	0
Other Investments, Fair Value	0	0	0	0	0
Loans held for sale	0	0	0	0	0
Net covered loans and loss share receivable, Fair Value	0	0	0	0	0
Accrued interest receivable, Fair Value	0	0	0	0	0
Derivative Asset, Fair Value, Gross Asset	0	0	0	0	0
Financial liabilities:
Deposits, Fair Value	0	0	0	0	0
Federal funds purchased and securities sold under agreements to repurchase, Fair Value	0	0	0	0	0
Other Borrowings, Fair Value	0	0	0	0	0
Long-term Debt, Fair Value	0	0	0	0	0
Accrued interest payable, Fair Value	0	0	0	0	0
Derivative Liability, Fair Value, Gross Liability	0	0	0	0	0
Fair Value, Inputs, Level 2
Financial assets:
Cash and due from banks, Fair Value	0	0	0	0	0
Available-for-sale Securities, Carrying Amount	3,972,996	3,524,149	3,972,996	3,524,149	3,623,270
Held-to-maturity Securities, Fair Value		2,760,120		2,760,120	2,659,119
Other Investments, Fair Value		147,967		147,967	148,172
Loans held for sale	3,962	5,432	3,962	5,432	5,472
Net covered loans and loss share receivable, Fair Value	0	0	0	0	0
Accrued interest receivable, Fair Value	65,666	66,501	65,666	66,501	67,887
Derivative Asset, Fair Value, Gross Asset	117,842	48,073	117,842	48,073	58,107
Financial liabilities:
Deposits, Fair Value	20,960,182	19,681,270	20,960,182	19,681,270	20,116,298
Federal funds purchased and securities sold under agreements to repurchase, Fair Value		1,519,250		1,519,250	1,037,075
Other Borrowings, Fair Value	473,187	369,337	473,187	369,337	582,120
Long-term Debt, Fair Value	522,151	509,900	522,151	509,900	503,675
Accrued interest payable, Fair Value	10,632	9,910	10,632	9,910	10,758
Derivative Liability, Fair Value, Gross Liability	90,622	51,497	90,622	51,497	52,745
Level 3
Financial assets:
Cash and due from banks, Fair Value	0	0	0	0	0
Available-for-sale Securities, Carrying Amount	342,904	311,536	342,904	311,536	341,644
Held-to-maturity Securities, Fair Value	0	0	0	0	0
Other Investments, Fair Value	0	0	0	0	0
Loans held for sale	0	0	0	0	0
Net covered loans and loss share receivable, Fair Value		211,887		211,887
Accrued interest receivable, Fair Value	0	0	0	0	0
Derivative Asset, Fair Value, Gross Asset	0	0	0	0	0
Financial liabilities:
Deposits, Fair Value	0	0	0	0	0
Federal funds purchased and securities sold under agreements to repurchase, Fair Value	0	0	0	0	0
Other Borrowings, Fair Value	0	0	0	0	0
Long-term Debt, Fair Value	0	0	0	0	0
Accrued interest payable, Fair Value	0	0	0	0	0
Derivative Liability, Fair Value, Gross Liability	0	0	0	0	0
Originated Loans
Financial assets:
Loans and Leases Receivable, Net Amount	14,560,456	13,254,230	14,560,456	13,254,230	14,013,370
Originated Loans and Leases Receivable Fair Value	14,349,013	13,077,485	14,349,013	13,077,485	13,795,058
Originated Loans | Fair Value, Inputs, Level 1
Financial assets:
Loans and Leases Receivable, Net Amount	0	0	0	0	0
Originated Loans | Fair Value, Inputs, Level 2
Financial assets:
Loans and Leases Receivable, Net Amount	0	0	0	0	0
Originated Loans | Level 3
Financial assets:
Loans and Leases Receivable, Net Amount	14,349,013	13,077,485	14,349,013	13,077,485	13,795,058
Acquired Loans
Financial assets:
Loans and Leases Receivable, Net Amount	1,484,380	2,090,734	1,484,380	2,090,734	1,739,194
Originated Loans and Leases Receivable Fair Value	1,532,344	2,167,304	1,532,344	2,167,304	1,796,314
Acquired Loans | Fair Value, Inputs, Level 1
Financial assets:
Loans and Leases Receivable, Net Amount	0	0	0	0	0
Acquired Loans | Fair Value, Inputs, Level 2
Financial assets:
Loans and Leases Receivable, Net Amount	0	0	0	0	0
Acquired Loans | Level 3
Financial assets:
Loans and Leases Receivable, Net Amount	$ 1,532,344	$ 2,167,304	$ 1,532,344	$ 2,167,304	$ 1,796,314

Fair Value Measurement (Narrati

Fair Value Measurement (Narrative) (Details) $ in Thousands	3 Months Ended		6 Months Ended		12 Months Ended
	Jun. 30, 2016USD ($)	Jun. 30, 2015USD ($)	Jun. 30, 2016USD ($)	Jun. 30, 2015USD ($)	Dec. 31, 2015USD ($)	Mar. 31, 2016USD ($)	Mar. 31, 2015USD ($)	Dec. 31, 2014USD ($)
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Mortgage Servicing Rights	$ 17,310	$ 20,635	$ 17,310	$ 20,635	$ 18,938	$ 18,127	$ 21,490	$ 22,011
Mortgage Servicing rights Valuation Allowance	(1,549)	(490)	(1,549)	(490)	(399)	$ (868)	$ (1,131)	$ (955)
Mortgage Servicing Rights Net Carrying balance	15,761	20,145	15,761	20,145	18,500
Mortgage Servicing Rights (MSR) Impairment (Recovery)	(681)	641	(1,150)	465	600
Impaired Collateral Dependant Loans, Recorded Investment	116,100	82,700	116,100	82,700	84,300
Determination Of Specific Allowance For Loan Losses	(11,900)	(10,200)	(11,900)	(10,200)	(12,900)
Collateral Dependant Impaired and Non Accrual Loans Carrying Amount	$ 104,200	72,600	$ 104,200	$ 72,600	71,400
Impairment of Real Estate		2,100			4,500
Impairment of Covered Other Real Esate Owned		$ 200			600
Percent of available for sale securities classified as level 2	92.00%		92.00%
Percentage of Level 3 investments in available for sale investment portfolio	8.00%		8.00%
True up liability, discount period	10 years
True-up Liabitlity Discount Rate	3.08%	3.58%	3.08%	3.58%
True-up Liability Effect of Change in Discount Rate By One Percent	$ 600	$ (600)	$ 600	$ (600)
Number of loans that were 90 days or more past due, or were any on nonaccrual status			0
Midwest
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Estimated fair value of true up liability	$ 10,500	8,400	$ 10,500	8,400	9,300
Percent of cumulative shared loss payments under loss sharing agreements	25.00%		25.00%
Percent of FDIC Intrinsic Loss Estimate	20.00%		20.00%
Intrinsic Loss Estimate of the FDIC	$ 152,000		$ 152,000
Percent of Asset Premium Paid	25.00%		25.00%
Asset Premium Paid	$ 21,000		$ 21,000
George Washington
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Estimated fair value of true up liability	$ 5,700	$ 5,000	$ 5,700	$ 5,000	$ 5,500
Percent of excess threshold paid by the Bank under loss sharing agreements	50.00%		50.00%
Percent Theshold of Loss Sharing Agreements Paid by Bank	20.00%		20.00%
Stated Threshold of Loss Sharing Agreements Paid by Bank	$ 34,400		$ 34,400
Percent of Asset Discount Under Loss Sharing Percent of Asset Discount Under Loss Sharing Agreements	25.00%		25.00%
Stated amount of Asset Discount Under Loss Sharing Agreements	$ 12,000		$ 12,000
Percent of cumulative shared loss payments under loss sharing agreements	25.00%		25.00%

(Narrative) (Details)

(Narrative) (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Servicing Assets at Fair Value [Line Items]
Residential mortgage loans sold from held or sale portfolio with unpaid balances	$ 15.6	$ 59.7	$ 15.6	$ 59.7
Pre-tax gains on residential mortgages sold			0.4	0.8
Retained MSR's for which company receives servicing fees on sold loans	$ 6.9	51.1	$ 6.9	51.1
Minimum percentage adverse change in prepayment speed			10.00%
Maximum percentage adverse change in prepayment speed			25.00%
Percentage of variation in prepayment speed	10.00%		10.00%
Residential Mortgages
Servicing Assets at Fair Value [Line Items]
Servicing Asset	$ 2,200	2,500	$ 2,200	$ 2,500
Loan servicing fees	$ 1.4	$ 1.6

Mortgage Servicing Rights and75

Mortgage Servicing Rights and Mortgage Servicing Activity (Changes in the Carrying Amount of Mortgage Servicing Rights) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended		12 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015	Dec. 31, 2015
Mortage Servicing Rights Amortized Value [Roll Forward]
Mortgage Servicing Rights Beginning of Period	$ 18,127	$ 21,490	$ 18,938	$ 22,011	$ 22,011
Mortgage Servicing Rights Additions	32	63	60	533
Amortization of Mortgage Servicing Rights (MSRs)	(849)	(918)	(1,688)	(1,909)
Mortgage Servicing Rights, End of Period	17,310	20,635	17,310	20,635	18,938
Mortage Servicing Rights Valuation Rollforward [Roll Forward]
Mortgage Servicing rights Valuation Allowance Beginning of Period	(868)	(1,131)	(399)	(955)	(955)
Mortgage Servicing Rights (MSR) Impairment Recovery/(Additions)	(681)	641	(1,150)	465	600
Mortgage Servicing rights Valuation Allowance, End of Period	(1,549)	(490)	(1,549)	(490)	(399)
Mortgage Servicing Rights Net Carrying balance	15,761	20,145	15,761	20,145	18,500
Fair Value of Mortgage Servicing Rights	15,954	20,809	15,954	20,809	19,149
Level 3
Mortage Servicing Rights Valuation Rollforward [Roll Forward]
Fair Value of Mortgage Servicing Rights	$ 15,954	$ 20,809	$ 15,954	$ 20,809	$ 19,149

Mortgage Servicing Rights and76

Mortgage Servicing Rights and Mortgage Servicing Activity (Changes in Key Economic Assumptions) (Details) $ in Thousands	3 Months Ended
	Jun. 30, 2016USD ($)
Changes in Key Assumptions [Abstract]
Prepayment speed assumption (annual CPR)	13.41%
Decrease in fair value from 10% adverse change	$ 964
Decrease in fair value from 25% adverse change	$ 1,242
Discount rate assumption	9.39%
Decrease in fair value from 100 basis point adverse change	$ 463
Decrease in fair value from 200 basis point adverse change	$ 898
Assumptions Used to Estimate Fair Value, Weighted Average Life	85 months

Contingencies and Guarantees (S

Contingencies and Guarantees (Schedule of Commitments to Extend Credit) (Details) - USD ($) $ in Thousands	Jun. 30, 2016	Dec. 31, 2015	Jun. 30, 2015
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Loan Commitments	$ 6,013,698	$ 6,385,147	$ 6,144,177
Commercial Loan
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Loan Commitments	3,505,383	3,992,089	3,746,824
Total consumer
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Loan Commitments	$ 2,508,315	$ 2,393,058	$ 2,397,353

Contingencies and Guarantees 78

Contingencies and Guarantees (Schedule of Guarantor Obligations) (Details) - USD ($) $ in Thousands	Jun. 30, 2016	Dec. 31, 2015	Jun. 30, 2015
Guarantor Obligations [Line Items]
Guarantor Obligations, Current Carrying Value	$ 232,456	$ 267,605	$ 284,309
Standby Letters of Credit
Guarantor Obligations [Line Items]
Guarantor Obligations, Current Carrying Value	220,913	254,703	255,418
Loans Sold with Recourse
Guarantor Obligations [Line Items]
Guarantor Obligations, Current Carrying Value	$ 11,543	$ 12,902	$ 28,891

Contingencies and Guarantees 79

Contingencies and Guarantees (Schedule of Changes in Repurchase Reserve) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Balance at beginning of period	$ 2,625	$ 6,650	$ 2,725	$ 7,250
Net increase/(decrease) to reserve	0	363	(53)	(39)
Net realized (losses)/gains	0	(363)	(47)	(561)
Balance at end of period	2,625	6,650	2,625	6,650
Residential Mortgages
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Balance at beginning of period			2,700
Balance at end of period	$ 2,600	$ 6,700	$ 2,600	$ 6,700

Contingencies and Guarantees (N

Contingencies and Guarantees (Narratives) (Details) - USD ($) $ in Thousands	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2014
Asset sales [Line Items]
Guarantor Obligations, Short-Term	$ 106,800
Financing Receivable, Repurchase Reserve	2,625	$ 2,625	$ 2,725	$ 6,650	$ 6,650	$ 7,250
Allowance for Loan and Lease Losses, Unfunded Lending Commitments	4,100		4,100	3,900
Residential Mortgages
Asset sales [Line Items]
Financing Receivable, Loans Sold to Third Party Investors	9,100		10,100	22,200
Financing Receivable, Repurchase Reserve	$ 2,600		$ 2,700	$ 6,700

Changes and Reclassifications81

Changes and Reclassifications Out of Accumulated Other Comprehensive Income (Schedule of Accumulated Other Comprehensive Income) (Details) - USD ($) $ in Thousands	3 Months Ended				6 Months Ended		12 Months Ended
	Jun. 30, 2016	Mar. 31, 2016	Jun. 30, 2015	Mar. 31, 2015	Jun. 30, 2016	Jun. 30, 2015	Dec. 31, 2015	Dec. 31, 2014
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]
Balance at the beginning of the period, After-tax		$ (79,274)			$ (79,274)
Changes in unrealized securities' holding gains/(losses), before Tax	$ 31,489		$ (28,642)		79,868	$ 5,475
Changes in unrealized securities' holding gains/(losses), Tax	11,431		(10,024)		28,994	1,916
Changes in unrealized securities' holding gains/(losses), After-tax	20,058		(18,618)		50,874	3,559
Changes in unrealized securities' holding gains/(losses) that result from securities being transferred into available-for-sale from held-to-maturity, Pre-tax	(221)		(575)		(1,072)	(1,079)
Changes in unrealized securities' holding gains/(losses) that result from securities being transferred from available-for-sale to held-to-maturity, Tax	(79)		(203)		(14)	(378)
Changes in unrealized securities' holding gains/(losses) that result from securities being transferred from available-for-sale to held-to-maturity , Net of Tax	(142)		(372)		(1,058)	(701)
Realized (gains) losses on sale of securities	(2,164)		(567)		(2,459)	(921)
Net losses/(gains) realized on sale of securities reclassified to noninterest income, Tax	(786)		(198)		(892)	(322)
Reclassified amount, net of tax	(1,378)		(369)		(1,567)	(599)
Balance at the beginning and end of the period, Pre-tax	(93,336)	(93,852)	(98,972)	$ (100,520)	(93,336)	(98,972)	$ (95,760)	$ (102,068)
Accumulated other comprehensive income reclassifications, benefit plan, tax	(32,560)	(32,746)	(34,638)	(35,181)	(32,560)	(34,638)	(33,432)	(35,722)
Accumulated Other Comprehensive Income (Loss), Pension and Other Postretirement Benefit Plans, Net of Tax	(60,776)	(61,106)	(64,334)	(65,339)	(60,776)	(64,334)	(62,328)	(66,346)
Net gains/(losses) arising during the period, Pre-Tax	0				0
Net gains/(losses) arising during the period, Tax	0				0
Net gains/(losses) arising during the period, After-tax	0				0
Amortization of actuarial gain, Pre-Tax	1,076		1,138		3,244	2,276
Amortization of actuarial gain, Tax	390		399		1,163	797
Amortization of actuarial losses/(gains), Net of Tax	686		739		2,081	1,479
Amortization of prior service cost reclassified to other noninterest expense, before Tax	(560)		410		(820)	820
Amortization of prior service cost reclassified to other noninterest expense, Tax	(204)		144		(291)	287
Amortization of prior service cost reclassified to other noninterest expense, After-tax	(356)		266		(529)	533
Balance at the end of the Period, Pre-tax	(49,785)		(104,028)		(49,785)	(104,028)
Balance at the end of the period, Tax	(20,312)		(36,407)		(20,312)	(36,407)
Balance at the end of the period, After-tax	(29,473)		(67,621)		(29,473)	(67,621)	(79,274)
Unrealized and realized securities gains and losses
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]
Balance at the beginning of the Period, Pre-tax	14,447	(32,786)	24,728	(8,531)	(32,786)	(8,531)	(8,531)
Balance at the beginning of the period, Tax	1,682	(15,840)	8,656	(2,985)	(15,840)	(2,985)	(2,985)
Balance at the beginning of the period, After-tax	12,765	(16,946)	16,072	(5,546)	(16,946)	(5,546)	(5,546)
Balance at the end of the Period, Pre-tax	43,551	14,447	(5,056)	24,728	43,551	(5,056)	(32,786)	(8,531)
Balance at the end of the period, Tax	12,248	1,682	(1,769)	8,656	12,248	(1,769)	(15,840)	(2,985)
Balance at the end of the period, After-tax	$ 31,303	$ 12,765	$ (3,287)	$ 16,072	$ 31,303	$ (3,287)	$ (16,946)	$ (5,546)

Changes and Reclassifications82

Changes and Reclassifications Out of Accumulated Other Comprehensive Income (Tax Effect of Changes and Reclassifications Out of Accumulated Other Comprehensive Income) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Changes and Reclassifications Out of Other Comprehensive Income [Abstract]
Realized (gains) losses on sale of securities	$ (2,164)	$ (567)	$ (2,459)	$ (921)
Tax expense (benefit)	(786)	(198)	(892)	(322)
Reclassified amount, net of tax	$ (1,378)	$ (369)	$ (1,567)	$ (599)

Subsequent Events Subsequent Ev

Subsequent Events Subsequent Events (Details) - Subsequent Event $ in Millions	Jul. 08, 2016USD ($)Branch	Jul. 13, 2016Branch
Wisconsin
Subsequent Event [Line Items]
Number of branches sold	4
Gain on disposal | $	$ 1.2
Ohio
Subsequent Event [Line Items]
Number of branches sold		13