Fulton Financial (FULT) 10-K 26 Feb 16 2015 FY Annual report Financial data

Document and Entity Information

Document and Entity Information - USD ($) $ in Billions	12 Months Ended
	Dec. 31, 2015	Jan. 31, 2016	Jun. 30, 2014
Document and Entity Information [Abstract]
Entity Registrant Name	FULTON FINANCIAL CORP
Entity Central Index Key	700,564
Trading Symbol	fult
Current Fiscal Year End Date	--12-31
Entity Filer Category	Large Accelerated Filer
Document Type	10-K
Document Period End Date	Dec. 31, 2015
Document Fiscal Year Focus	2,015
Document Fiscal Period Focus	FY
Amendment Flag	false
Entity Common Stock, Shares Outstanding		173,623,000
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Well-known Seasoned Issuer	Yes
Entity Public Float			$ 2.3

Consolidated Balance Sheets

Consolidated Balance Sheets - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Assets
Cash and due from banks	$ 101,120	$ 105,702
Interest-bearing deposits with other banks	230,300	358,130
Federal Reserve Bank and Federal Home Loan Bank stock	62,216	64,953
Loans held for sale	16,886	17,522
Available for sale investment securities	2,484,773	2,323,371
Loans, net of unearned income	13,838,602	13,111,716
Allowance for loan losses	(169,054)	(184,144)
Net Loans	13,669,548	12,927,572
Premises and equipment	225,535	226,027
Accrued interest receivable	42,767	41,818
Goodwill and intangible assets	531,556	531,803
Other assets	550,017	527,869
Total Assets	17,914,718	17,124,767
Liabilities
Noninterest-bearing	3,948,114	3,640,623
Interest-bearing	10,184,203	9,726,883
Total Deposits	14,132,317	13,367,506
Short-term borrowings:
Federal funds purchased	197,235	6,219
Other short-term borrowings	300,428	323,500
Total Short-Term Borrowings	497,663	329,719
Accrued interest payable	10,724	18,045
Other liabilities	282,578	273,419
Federal Home Loan Bank advances and long-term debt	949,542	1,139,413
Total Liabilities	15,872,824	15,128,102
Shareholders’ Equity
Common stock, $2.50 par value, 600 million shares authorized, 218.9 million shares issued in 2015 and 218.2 million shares issued in 2014	547,141	545,555
Additional paid-in capital	1,450,690	1,420,523
Retained earnings	641,588	558,810
Accumulated other comprehensive loss	(22,017)	(17,722)
Treasury stock, 44.7 million shares in 2015 and 39.3 million shares in 2014	(575,508)	(510,501)
Total Shareholders’ Equity	2,041,894	1,996,665
Total Liabilities and Shareholders’ Equity	$ 17,914,718	$ 17,124,767

Consolidated Balance Sheets (Pa

Consolidated Balance Sheets (Parenthetical) - $ / shares	Dec. 31, 2015	Dec. 31, 2014
Statement of Financial Position [Abstract]
Common stock, par value (usd per share)	$ 2.5	$ 2.5
Common stock, shares authorized	600,000,000	600,000,000
Common stock, shares issued	218,900,000	218,200,000
Treasury stock, shares	44,700,000	39,300,000

Consolidated Statements of Inco

Consolidated Statements of Income - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Interest Income
Loans, including fees	$ 524,060	$ 530,308	$ 540,667
Investment securities:
Taxable	45,279	50,651	54,321
Tax-exempt	7,879	8,977	9,475
Dividends	985	1,338	1,411
Loans held for sale	801	786	1,551
Other interest income	4,785	4,018	2,264
Total Interest Income	583,789	596,078	609,689
Interest Expense
Deposits	40,482	35,110	36,770
Short-term borrowings	372	1,608	2,420
Long-term debt	42,941	44,493	43,305
Total Interest Expense	83,795	81,211	82,495
Net Interest Income	499,994	514,867	527,194
Provision for credit losses	2,250	12,500	40,500
Net Interest Income After Provision for Credit Losses	497,744	502,367	486,694
Non-Interest Income
Service charges on deposit accounts	50,097	49,293	55,470
Investment management and trust services	44,056	44,605	41,706
Other service charges and fees	43,992	39,896	36,957
Mortgage banking income	18,208	17,107	30,656
Other	16,420	14,437	14,871
Investment securities gains (losses):
Net gains on sales of investment securities	9,066	2,071	8,128
Net other-than-temporary impairment losses	0	(30)	(124)
Investment securities gains, net	9,066	2,041	8,004
Total Non-Interest Income	181,839	167,379	187,664
Non-Interest Expense
Salaries and employee benefits	260,832	251,021	253,240
Net occupancy expense	47,777	48,130	46,944
Other outside services	27,785	28,404	18,856
Data processing	19,894	17,162	16,555
Software	14,746	12,758	11,560
Equipment expense	14,514	13,567	15,419
FDIC insurance expense	11,470	10,958	11,605
Professional fees	11,244	12,097	13,150
Supplies and postage	10,202	9,795	10,210
Marketing	7,324	8,133	7,705
Telecommunications	6,350	6,870	7,362
Loss on redemption of trust preferred securities	5,626	0	0
Other real estate owned and repossession expense	3,630	3,270	7,364
Operating risk loss	3,624	4,271	9,290
Intangible amortization	247	1,259	2,438
Other	34,895	31,551	29,735
Total Non-Interest Expense	480,160	459,246	461,433
Income Before Income Taxes	199,423	210,500	212,925
Income taxes	49,921	52,606	51,085
Net Income	$ 149,502	$ 157,894	$ 161,840
PER COMMON SHARE:
Net Income (Basic) (usd per share)	$ 0.85	$ 0.85	$ 0.84
Net Income (Diluted) (usd per share)	0.85	0.84	0.83
Cash Dividends (usd per share)	$ 0.38	$ 0.34	$ 0.32

Consolidated Statements of Comp

Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Statement of Comprehensive Income [Abstract]
Net Income	$ 149,502	$ 157,894	$ 161,840
Unrealized (losses) gains on available for sale investment securities:
Unrealized (loss) gain on securities	(7,717)	33,734	(49,607)
Reclassification adjustment for securities gains included in net income	(5,892)	(1,327)	(5,203)
Non-credit related unrealized gain on other-than-temporarily impaired debt securities	239	780	1,977
Net unrealized (losses) gains on available for sale investment securities	(13,370)	33,187	(52,833)
Unrealized gains on derivative financial instruments:
Unrealized gain on derivative financial instruments	75	136	136
Reclassification adjustment for loss on derivative financial instruments included in net income	2,456	0	0
Net unrealized gains on derivative financial instruments	2,531	136	136
Defined benefit pension plan and postretirement benefits:
Unrecognized pension and postretirement income (cost)	4,680	(13,168)	8,369
Amortization of net unrecognized pension and postretirement income	1,864	408	1,312
Non-credit related unrealized gain on other-than-temporarily impaired debt securities	0	(944)	0
Net unrealized gains (losses) on pension and postretirement plans	6,544	(13,704)	9,681
Other Comprehensive (Loss) Income	(4,295)	19,619	(43,016)
Total Comprehensive Income	$ 145,207	$ 177,513	$ 118,824

Consolidated Statements of Shar

Consolidated Statements of Shareholders' Equity - USD ($) shares in Thousands, $ in Thousands	Total	Accelerated Stock Repurchase Program	Common Stock	Common StockAccelerated Stock Repurchase Program	Additional Paid-in Capital	Additional Paid-in CapitalAccelerated Stock Repurchase Program	Retained Earnings	Accumulated Other Comprehensive Income (Loss)	Treasury Stock	Treasury StockAccelerated Stock Repurchase Program
Beginning Balance at Dec. 31, 2012	$ 2,081,656		$ 542,093		$ 1,426,267		$ 363,937	$ 5,675	$ (256,316)
Beginning Balance (in shares) at Dec. 31, 2012			199,225
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net Income	161,840						161,840
Other comprehensive loss	(43,016)							(43,016)
Stock issued, including related tax benefits	10,238		$ 2,475		1,377				6,386
Stock issued, including related tax benefits (in shares)			1,427
Stock-based compensation awards	5,330				5,330
Acquisition of treasury stock	(90,927)
Acquisition of treasury stock (in shares)			(8,000)
Common stock cash dividends	(61,934)						(61,934)
Ending Balance at Dec. 31, 2013	2,063,187		$ 544,568		1,432,974		463,843	(37,341)	(340,857)
Ending Balance (in shares) at Dec. 31, 2013			192,652
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net Income	157,894						157,894
Other comprehensive loss	19,619							19,619
Stock issued, including related tax benefits	8,282		$ 987		1,684				5,611
Stock issued, including related tax benefits (in shares)			781
Stock-based compensation awards	5,865	$ (20,000)			5,865	$ (20,000)
Acquisition of treasury stock	(175,255)								(175,255)
Acquisition of treasury stock (in shares)			(14,509)
Common stock cash dividends	(62,927)						(62,927)
Ending Balance at Dec. 31, 2014	1,996,665		$ 545,555		1,420,523		558,810	(17,722)	(510,501)
Ending Balance (in shares) at Dec. 31, 2014			178,924
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net Income	149,502						149,502
Other comprehensive loss	(4,295)							(4,295)
Stock issued, including related tax benefits	10,808		$ 1,586		4,229				4,993
Stock issued, including related tax benefits (in shares)			1,018
Stock-based compensation awards	5,938				5,938
Acquisition of treasury stock	(50,000)								(50,000)
Acquisition of treasury stock (in shares)			(3,976)	1,790
Deferred accelerated stock repurchase payment		$ 0				$ 20,000				$ (20,000)
Common stock cash dividends	(66,724)						(66,724)
Ending Balance at Dec. 31, 2015	$ 2,041,894		$ 547,141		$ 1,450,690		$ 641,588	$ (22,017)	$ (575,508)
Ending Balance (in shares) at Dec. 31, 2015			174,176

Consolidated Statements of Sha7

Consolidated Statements of Shareholders' Equity (Parentheticals) - $ / shares	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Statement of Stockholders' Equity [Abstract]
Common Stock cash dividends (usd per share)	$ 0.38	$ 0.34	$ 0.32

Consolidated Statements of Cash

Consolidated Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
CASH FLOWS FROM OPERATING ACTIVITIES:
Net Income	$ 149,502	$ 157,894	$ 161,840
Adjustments to reconcile net income to net cash provided by operating activities:
Provision for credit losses	2,250	12,500	40,500
Depreciation and amortization of premises and equipment	27,605	24,555	25,911
Net amortization of investment security premiums	7,330	5,120	10,002
Deferred income tax expense	13,424	18,523	11,825
Investment securities gains, net	(9,066)	(2,041)	(8,004)
Gains on sales of mortgage loans	(13,264)	(10,063)	(24,609)
Proceeds from sales of mortgage loans held for sale	757,850	654,654	1,424,896
Originations of mortgage loans held for sale	(743,950)	(640,762)	(1,353,739)
Intangible amortization	247	1,259	2,438
Stock-based compensation	5,938	5,865	5,330
Excess tax benefits from stock-based compensation	(201)	(81)	(302)
(Increase) decrease in accrued interest receivable	(949)	2,219	1,749
Loss on redemption of trust preferred securities	5,626	0	0
Increase (decrease) in other assets	(9,931)	(8,803)	37,236
(Decrease) increase in accrued interest payable	(7,321)	2,827	(4,112)
Decrease in other liabilities	(8,128)	(13,294)	(29,344)
Total adjustments	27,460	52,478	139,777
Net cash provided by operating activities	176,962	210,372	301,617
CASH FLOWS FROM INVESTING ACTIVITIES:
Proceeds from sales of securities available for sale	66,480	32,227	267,126
Proceeds from maturities and paydowns of securities available for sale	439,533	417,559	637,851
Purchase of securities available for sale	(683,839)	(164,769)	(776,352)
Decrease (increase) in short-term investments	130,567	(174,922)	(3,202)
Net increase in loans	(743,655)	(360,982)	(699,961)
Net purchases of premises and equipment	(27,113)	(24,561)	(24,209)
Net cash used in investing activities	(818,027)	(275,448)	(598,747)
CASH FLOWS FROM FINANCING ACTIVITIES:
Net increase in demand and savings deposits	971,312	722,791	472,439
Net (decrease) increase in time deposits	(206,501)	153,529	(465,416)
Increase (decrease) in short-term borrowings	167,944	(928,910)	390,230
Additions to long-term debt	347,778	262,113	0
Repayments of long-term debt	(539,497)	(6,284)	(10,669)
Net proceeds from issuance of common stock	10,607	8,201	9,936
Excess tax benefits from stock-based compensation	201	81	302
Dividends paid	(65,361)	(64,028)	(46,525)
Acquisition of treasury stock	(50,000)	(175,255)	(90,927)
Deferred accelerated stock repurchase payment	0	(20,000)	0
Net cash provided by (used in) financing activities	636,483	(47,762)	259,370
Net Decrease in Cash and Due From Banks	(4,582)	(112,838)	(37,760)
Cash and Due From Banks at Beginning of Year	105,702	218,540	256,300
Cash and Due From Banks at End of Year	101,120	105,702	218,540
Cash paid during period for:
Interest	91,116	78,384	86,607
Income taxes	$ 13,378	$ 16,778	$ 32,605

Summary of Significant Accounti

Summary of Significant Accounting Policies	12 Months Ended
	Dec. 31, 2015
Accounting Policies [Abstract]
Summary of Significant Accounting Policies	NOTE 1 – SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES Business: Fulton Financial Corporation (Parent Company) is a multi-bank financial holding company which provides a full range of banking and financial services to businesses and consumers through its six wholly owned banking subsidiaries: Fulton Bank, N.A., Fulton Bank of New Jersey, The Columbia Bank, Lafayette Ambassador Bank, FNB Bank, N.A. and Swineford National Bank. In addition, the Parent Company owns the following non-bank subsidiaries: Fulton Financial Realty Company, Central Pennsylvania Financial Corp., FFC Management, Inc., FFC Penn Square, Inc. and Fulton Insurance Services Group, Inc. Collectively, the Parent Company and its subsidiaries are referred to as the Corporation. The Corporation’s primary sources of revenue are interest income on loans and investment securities and fee income on its products and services. Its expenses consist of interest expense on deposits and borrowed funds, provision for credit losses, other operating expenses and income taxes. The Corporation’s primary competition is other financial services providers operating in its region. Competitors also include financial services providers located outside the Corporation’s geographical market as a result of the growth in electronic delivery systems. The Corporation is subject to the regulations of certain Federal and state agencies and undergoes periodic examinations by such regulatory authorities. The Corporation offers, through its banking subsidiaries, a full range of retail and commercial banking services in Pennsylvania, Delaware, Maryland, New Jersey and Virginia. Industry diversity is the key to the economic well-being of these markets, and the Corporation is not dependent upon any single customer or industry. Basis of Financial Statement Presentation: The consolidated financial statements have been prepared in conformity with accounting principles generally accepted in the United States (U.S. GAAP) and include the accounts of the Parent Company and all wholly owned subsidiaries. All significant intercompany accounts and transactions have been eliminated. The preparation of financial statements in accordance with U.S. GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities, the disclosed amount of contingent assets and liabilities as of the date of the financial statements and the reported amounts of revenues and expenses during the period. Actual results could differ from those estimates. The Corporation evaluates subsequent events through the date of the filing of this report with the Securities and Exchange Commission (SEC). Federal Reserve Bank and Federal Home Loan Bank Stock: Certain of the Corporation's wholly owned banking subsidiaries are members of the Federal Reserve Bank and Federal Home Loan Bank and are required by federal law to hold stock in these institutions according to predetermined formulas. These restricted investments are carried at cost on the consolidated balance sheets and are periodically evaluated for impairment. Each of the Corporation’s subsidiary banks is a member of the Federal Home Loan Bank for the region encompassing the headquarters of the subsidiary bank. Memberships are maintained with the Atlanta, New York and Pittsburgh regional Federal Home Loan Banks (collectively referred to as the FHLB). Investments: Debt securities are classified as held to maturity at the time of purchase when the Corporation has both the intent and ability to hold these investments until they mature. Such debt securities are carried at cost, adjusted for amortization of premiums and accretion of discounts using the effective yield method. The Corporation does not engage in trading activities, however, since the investment portfolio serves as a source of liquidity, all debt securities and marketable equity securities are classified as available for sale. Securities available for sale are carried at estimated fair value with the related unrealized holding gains and losses reported in shareholders’ equity as a component of other comprehensive income, net of tax. Realized securities gains and losses are computed using the specific identification method and are recorded on a trade date basis. Securities are evaluated periodically to determine whether declines in value are other-than-temporary. For its investments in equity securities, most notably its investments in stocks of financial institutions, the Corporation evaluates the near-term prospects of the issuers in relation to the severity and duration of the impairment. Equity securities with fair values less than cost are considered to be other-than-temporarily impaired if the Corporation does not have the ability and intent to hold the investments for a reasonable period of time that would be sufficient for a recovery of fair value. Impaired debt securities are determined to be other-than-temporarily impaired if the Corporation concludes at the balance sheet date that it has the intent to sell, or believes it will more likely than not be required to sell, an impaired debt security before a recovery of its amortized cost basis. Credit losses on other-than-temporarily impaired debt securities are recorded through earnings, regardless of the intent or the requirement to sell. Credit loss is measured as the difference between the present value of an impaired debt security’s expected cash flows and its amortized cost. Non-credit related other-than-temporary impairment charges are recorded as decreases to accumulated other comprehensive income as long as the Corporation has no intent or expected requirement to sell the impaired debt security before a recovery of its amortized cost basis. Fair Value Option: The Corporation has elected to measure mortgage loans held for sale at fair value. Derivative financial instruments related to mortgage banking activities are also recorded at fair value, as detailed under the heading "Derivative Financial Instruments," below. The Corporation determines fair value for its mortgage loans held for sale based on the price that secondary market investors would pay for loans with similar characteristics, including interest rate and term, as of the date fair value is measured. Changes in fair values during the period are recorded as components of mortgage banking income on the consolidated statements of income. Interest income earned on mortgage loans held for sale is classified in interest income on the consolidated statements of income. Loans and Revenue Recognition : Loan and lease financing receivables are stated at their principal amount outstanding, except for mortgage loans held for sale, which are carried at fair value. Interest income on loans is accrued as earned. Unearned income on lease financing receivables is recognized on a basis which approximates the effective yield method. In general, a loan is placed on non-accrual status once it becomes 90 days delinquent as to principal or interest. In certain cases a loan may be placed on non-accrual status prior to being 90 days delinquent if there is an indication that the borrower is having difficulty making payments, or the Corporation believes it is probable that all amounts will not be collected according to the contractual terms of the loan agreement. When interest accruals are discontinued, unpaid interest previously credited to income is reversed. Non-accrual loans may be restored to accrual status when all delinquent principal and interest has been paid currently for six consecutive months or the loan is considered secured and in the process of collection. The Corporation generally applies payments received on non-accruing loans to principal until such time as the principal is paid off, after which time any payments received are recognized as interest income. If the Corporation believes that all amounts outstanding on a non-accrual loan will ultimately be collected, payments received subsequent to its classification as a non-accrual loan are allocated between interest income and principal. A loan that is 90 days delinquent may continue to accrue interest if the loan is both adequately secured and is in the process of collection. Past due status is determined based on contractual due dates for loan payments. An adequately secured loan is one that has collateral with a supported fair value that is sufficient to discharge the debt, and/or has an enforceable guarantee from a financially responsible party. A loan is considered to be in the process of collection if collection is proceeding through legal action or through other activities that are reasonably expected to result in repayment of the debt or restoration to current status in the near future. Loans and lease financing receivables deemed to be a loss are written off through a charge against the allowance for loan losses. Closed-end consumer loans are generally charged off when they become 120 days past due ( 180 days for open-end consumer loans) if they are not adequately secured by real estate. All other loans are evaluated for possible charge-off when it is probable that the balance will not be collected, based on the ability of the borrower to pay and the value of the underlying collateral. Principal recoveries of loans previously charged off are recorded as increases to the allowance for loan losses. Loan Origination Fees and Costs: Loan origination fees and the related direct origination costs are deferred and amortized over the life of the loan as an adjustment to interest income generally using the effective yield method. For mortgage loans sold, net loan origination fees and costs are included in the gain or loss on sale of the related loan. Troubled Debt Restructurings (TDRs): Loans whose terms are modified are classified as TDRs if the Corporation grants the borrowers concessions and it is determined that those borrowers are experiencing financial difficulty. Concessions, whether negotiated or imposed by bankruptcy, granted under a TDR typically involve a temporary deferral of scheduled loan payments, an extension of a loan’s stated maturity date or a reduction in the interest rate. Non-accrual TDRs can be restored to accrual status if principal and interest payments, under the modified terms, are current for six consecutive months after modification. Allowance for Credit Losses: The allowance for credit losses consists of the allowance for loan losses and the reserve for unfunded lending commitments. The allowance for loan losses represents management’s estimate of incurred losses in the loan portfolio as of the balance sheet date and is recorded as a reduction to loans. The reserve for unfunded lending commitments represents management’s estimate of incurred losses in its unfunded loan commitments and is recorded in other liabilities on the consolidated balance sheets. The allowance for credit losses is increased by charges to expense, through the provision for credit losses, and decreased by charge-offs, net of recoveries. Management believes that the allowance for loan losses and the reserve for unfunded lending commitments are adequate as of the balance sheet date; however, future changes to the allowance or reserve may be necessary based on changes in any of the factors discussed in the following paragraphs. Maintaining an adequate allowance for credit losses is dependent upon various factors, including the ability to identify potential problem loans in a timely manner. For commercial loans, commercial mortgages and construction loans to commercial borrowers, an internal risk rating process is used. The Corporation believes that internal risk ratings are the most relevant credit quality indicator for these types of loans. The migration of loans through the various internal risk rating categories is a significant component of the allowance for credit loss methodology for these loans, which bases the probability of default on this migration. Assigning risk ratings involves judgment. The Corporation's loan review officers provide a separate assessment of risk rating accuracy. Risk ratings may be changed based on the ongoing monitoring procedures performed by loan officers or credit administration staff, or if specific loan review assessments identify a deterioration or an improvement in the loan. The following is a summary of the Corporation's internal risk rating categories: • Pass : These loans do not currently pose undue credit risk and can range from the highest to average quality, depending on the degree of potential risk. • Special Mention : These loans have an undue and unwarranted credit risk, but not to the point of justifying a classification of substandard. Loans in this category are currently acceptable, but are nevertheless potentially weak. • Substandard or Lower : These loans are inadequately protected by current sound worth and paying capacity of the borrower. There exists a well-defined weakness or weaknesses that jeopardize the normal repayment of the debt. The Corporation does not assign internal risk ratings for smaller balance, homogeneous loans, such as: home equity, residential mortgage, consumer, lease receivables and construction loans to individuals secured by residential real estate. For these loans, the most relevant credit quality indicator is delinquency status. The migration of loans through the various delinquency status categories is a significant component of the allowance for credit loss methodology for these loans, which bases the probability of default on this migration. The Corporation’s allowance for loan losses includes: 1) specific allowances allocated to loans evaluated for impairment under the Financial Accounting Standards Board's Accounting Standards Codification (FASB ASC) Section 310-10-35; and 2) allowances calculated for pools of loans measured for impairment under FASB ASC Subtopic 450-20. A loan is considered to be impaired if it is probable that all amounts will not be collected according to the contractual terms of the loan agreement. Impaired loans consist of all loans on non-accrual status and accruing TDRs. An allowance for loan losses is established for an impaired loan if its carrying value exceeds its estimated fair value. Impaired loans to borrowers with total outstanding commitments greater than or equal to $1.0 million are evaluated individually for impairment. Impaired loans to borrowers with total outstanding commitments less than $1.0 million are pooled and measured for impairment collectively. All loans evaluated for impairment under FASB ASC Section 310-10-35 are measured for losses on a quarterly basis. As of December 31, 2015 and 2014 , substantially all of the Corporation’s impaired loans to borrowers with total outstanding loan balances greater than or equal to $1.0 million were measured based on the estimated fair value of each loan’s collateral. Collateral could be in the form of real estate, in the case of impaired commercial mortgages and construction loans, or business assets, such as accounts receivable or inventory, in the case of commercial and industrial loans. Commercial and industrial loans may also be secured by real property. For loans secured by real estate, estimated fair values are determined primarily through appraisals performed by state certified third-party appraisers, discounted to arrive at expected net sale proceeds. For collateral dependent loans, estimated real estate fair values are also net of estimated selling costs. When a real estate secured loan becomes impaired, a decision is made regarding whether an updated appraisal of the real estate is necessary. This decision is based on various considerations, including: the age of the most recent appraisal; the loan-to-value ratio based on the original appraisal; the condition of the property; the Corporation’s experience and knowledge of the real estate market; the purpose of the loan; market factors; payment status; the strength of any guarantors; and the existence and age of other indications of value such as broker price opinions, among others. The Corporation generally obtains updated state certified third-party appraisals for impaired loans secured predominantly by real estate every 12 months. As of December 31, 2015 and 2014 , approximately 69% and 81% , respectively, of impaired loans with principal balances greater than or equal to $1.0 million , whose primary collateral is real estate, were measured at estimated fair value using state certified third-party appraisals that had been updated within the preceding 12 months. When updated appraisals are not obtained for loans evaluated for impairment under FASB ASC Section 310-10-35 that are secured by real estate, fair values are estimated based on the original appraisal values, as long as the original appraisal indicated an acceptable loan-to-value position and, in the opinion of the Corporation's internal credit administration staff, there has not been a significant deterioration in the collateral value since the original appraisal was performed. Original appraisals are typically used only when the estimated collateral value, as adjusted appropriately for the age of the appraisal, results in a current loan-to-value ratio that is lower than the Corporation's loan-to-value requirements for new loans, generally less than 70% . For impaired loans with principal balances greater than or equal to $1.0 million secured by non-real estate collateral, such as accounts receivable or inventory, estimated fair values are determined based on borrower financial statements, inventory listings, accounts receivable agings or borrowing base certificates. Indications of value from these sources are generally discounted based on the age of the financial information or the quality of the assets. Liquidation or collection discounts are applied to these assets based upon existing loan evaluation policies. All loans not evaluated for impairment under FASB ASC Section 310-10-35 are evaluated for impairment under FASB ASC Subtopic 450-20, using a pooled loss evaluation approach. In general, these loans include residential mortgages, home equity loans, consumer loans, and lease receivables. Accruing commercial loans, commercial mortgages and construction loans are also evaluated for impairment under FASB ASC Subtopic 450-20. The Corporation segments its loan portfolio by general loan type, or "portfolio segments," as presented in the table under the heading, "Loans, net of unearned income," within Note 4, "Loans and Allowance for Credit Losses." Certain portfolio segments are further disaggregated and evaluated collectively for impairment based on "class segments," which are largely based on the type of collateral underlying each loan. For commercial loans, class segments include loans secured by collateral and unsecured loans. Construction loan class segments include loans secured by commercial real estate, loans to commercial borrowers secured by residential real estate and loans to individuals secured by residential real estate. Consumer loan class segments are based on collateral types and include direct consumer installment loans and indirect automobile loans. The Corporation calculates allowance allocation needs for loans measured under FASB ASC Subtopic 450-20 through the following procedures: • The loans are segmented into pools with similar characteristics, as noted above. Commercial loans, commercial mortgages and construction loans to commercial borrowers are further segmented into separate pools based on internally assigned risk ratings. Residential mortgages, home equity loans, consumer loans, and lease receivables are further segmented into separate pools based on delinquency status. • A loss rate is calculated for each pool through a migration analysis of historical losses as loans migrate through the various risk rating or delinquency categories. Estimated loss rates are based on a probability of default and a loss rate forecast. • The loss rate is adjusted to consider qualitative factors, such as economic conditions and trends. • The resulting adjusted loss rate is applied to the balance of the loans in the pool to arrive at the allowance allocation for the pool. The allocation of the allowance for credit losses is reviewed to evaluate its appropriateness in relation to the overall risk profile of the loan portfolio. The Corporation considers risk factors such as: local and national economic conditions; trends in delinquencies and non-accrual loans; the diversity of borrower industry types; and the composition of the portfolio by loan type. An unallocated allowance is maintained for factors and conditions that exist at the balance sheet date, but are not specifically identifiable, and to recognize the inherent imprecision in estimating and measuring loss exposure. Premises and Equipment: Premises and equipment are stated at cost, less accumulated depreciation and amortization. The provision for depreciation and amortization is generally computed using the straight-line method over the estimated useful lives of the related assets, which are a maximum of 50 years for buildings and improvements, 8 years for furniture and 5 years for equipment. Leasehold improvements are amortized over the shorter of the useful life or the non-cancelable lease term. Interest costs incurred during the construction of major bank premises are capitalized. Other Real Estate Owned (OREO): Assets acquired in settlement of mortgage loan indebtedness are recorded as OREO and are included in other assets on the consolidated balance sheets, initially at the lower of the estimated fair value of the asset, less estimated selling costs, or the carrying amount of the loan. Costs to maintain the assets and subsequent gains and losses on sales are included in OREO and repossession expense on the consolidated statements of income. Mortgage Servicing Rights (MSRs): The estimated fair value of MSRs related to residential mortgage loans sold and serviced by the Corporation is recorded as an asset upon the sale of such loans. MSRs are amortized as a reduction to servicing income over the estimated lives of the underlying loans. MSRs are stratified and evaluated for impairment by comparing each stratum's carrying amount to its estimated fair value. Fair values are determined through a discounted cash flows valuation completed by a third-party valuation expert. Significant inputs to the valuation include expected net servicing income, the discount rate and the expected lives of the underlying loans. Expected life is based on the contractual terms of the loans, as adjusted for prepayment projections. To the extent the amortized cost of the MSRs exceeds their estimated fair value, a valuation allowance is established through a charge against servicing income, included as a component of mortgage banking income on the consolidated statements of income. If subsequent valuations indicate that impairment no longer exists, the valuation allowance is reduced through an increase to servicing income. Derivative Financial Instruments: The Corporation manages its exposure to certain interest rate and foreign currency risks through the use of derivatives. None of the Corporation's outstanding derivative contracts are designated as hedges and none are entered into for speculative purposes. Derivative instruments are carried at fair value, with changes in fair values recognized in earnings as components of non-interest income or non-interest expense on the consolidated statements of income. Derivative contracts create counterparty credit risk with both the Corporation's customers and with institutional derivative counterparties. The Corporation manages counterparty credit risk through its credit approval processes, monitoring procedures and obtaining adequate collateral, when the Corporation determines it is appropriate to do so and in accordance with counterparty contracts. Mortgage Banking Derivatives In connection with its mortgage banking activities, the Corporation enters into commitments to originate certain fixed-rate residential mortgage loans for customers, also referred to as interest rate locks. In addition, the Corporation enters into forward commitments for the future sales or purchases of mortgage-backed securities to or from third-party counterparties to hedge the effect of changes in interest rates on the values of both the interest rate locks and mortgage loans held for sale. Forward sales commitments may also be in the form of commitments to sell individual mortgage loans at a fixed price at a future date. The amount necessary to settle each interest rate lock is based on the price that secondary market investors would pay for loans with similar characteristics, including interest rate and term, as of the date fair value is measured. Gross derivative assets and liabilities are recorded in other assets and other liabilities, respectively, on the consolidated balance sheets, with changes in fair values during the period recorded in mortgage banking income on the consolidated statements of income. Interest Rate Swaps The Corporation enters into interest rate swaps with certain qualifying commercial loan customers to meet their interest rate risk management needs. The Corporation simultaneously enters into interest rate swaps with dealer counterparties, with identical notional amounts and terms. The net result of these interest rate swaps is that the customer pays a fixed rate of interest and the Corporation receives a floating rate. These interest rate swaps are derivative financial instruments that are recorded at their fair value in other assets and liabilities on the consolidated balance sheets. Changes in fair value during the period are recorded in other non-interest expense on the consolidated statements of income. Foreign Exchange Contracts The Corporation enters into foreign exchange contracts to accommodate the needs of its customers. Foreign exchange contracts are commitments to buy or sell foreign currency on a future date at a contractual price. The Corporation offsets its foreign exchange contract exposure with customers by entering into contracts with third-party correspondent financial institutions to mitigate its exposure to fluctuations in foreign currency exchange rates. The Corporation also holds certain amounts of foreign currency with international correspondent banks. The Corporation's policy limits the total net foreign currency open positions, which includes all outstanding contracts and foreign account balances, to $500,000 . Gross derivative assets and liabilities are recorded in other assets and other liabilities, respectively, on the consolidated balance sheets, with changes in fair values during the period recorded in other service charges and fees on the consolidated statements of income. Balance Sheet Offsetting: Although certain financial assets and liabilities may be eligible for offset on the consolidated balance sheets as they are subject to master netting arrangements or similar agreements, the Corporation elects to not offset such qualifying assets and liabilities. The Corporation is a party to interest rate swap transactions with financial institution counterparties and customers. Under these agreements, the Corporation has the right to net-settle multiple contracts with the same counterparty in the event of default on, or termination of, any one contract. Cash collateral is posted by the party with a net liability position in accordance with contract thresholds and can be used to settle the fair value of the interest rate swap agreements in the event of default. The Corporation is also a party to foreign currency exchange contracts with financial institution counterparties, under which the Corporation has the right to net-settle multiple contracts with the same counterparty in the event of default on, or termination of, any one contract. As with interest rate swap contracts, cash collateral is posted by the party with a net liability position in accordance with contract thresholds and can be used to settle the fair value of the foreign currency exchange contracts in the event of default. For additional details, see "Note 10 - Derivative Financial Instruments." The Corporation also enters into agreements with customers in which it sells securities subject to an obligation to repurchase the same or similar securities, referred to as repurchase agreements. Under these agreements, the Corporation may transfer legal control over the assets but still maintain effective control through agreements that both entitle and obligate the Corporation to repurchase the assets. Therefore, repurchase agreements are reported as secured borrowings, classified in short-term borrowings on the consolidated balance sheets, while the securities underlying the repurchase agreements remain classified with investment securities on the consolidated balance sheets. The Corporation has no intention of setting off these amounts, therefore, these repurchase agreements are not eligible for offset. Income Taxes: The Corporation accounts for income taxes in accordance with FASB ASC Topic 740, "Income Taxes" (ASC Topic 740). Under ASC Topic 740, deferred tax assets and liabilities are determined based on the differences between the financial statement carrying amounts and the tax bases of existing assets and liabilities and are measured at the prevailing enacted tax rates that will be in effect when these differences are settled or realized. ASC Topic 740 also requires that deferred tax assets be reduced by a valuation allowance if it is more likely than not that some portion or all of the deferred tax assets will not be realized. The realizability of the net deferred tax assets is evaluated quarterly by assessing the valuation allowance and by adjusting the amount of the allowance, if necessary. We consider all available positive and negative evidence including projected future taxable income and available tax planning strategies that could be implemented to realize the net deferred tax assets. The evaluation of both positive and negative evidence is a requirement pursuant to ASC Topic 740 in determining more-likely-than-not the net deferred tax assets will be realized. In the event the Corporation determines that the deferred income tax assets would be realized in the future in excess of their net recorded amount, an adjustment to the valuation allowance would be recorded, which would reduce the provision for income taxes. ASC Topic 740 also creates a single model to address uncertainty in tax positions, and clarifies the accounting for uncertainty in income taxes recognized in an enterprise's financial statements by prescribing the minimum recognition threshold a tax position is required to meet before being recognized in an enterprise's financial statements. It also provides guidance on derecognition, measurement, classification, interest and penalties, accounting in interim periods, disclosure and transition. The liability for unrecognized tax benefits is included in other liabilities within the consolidated balance sheets at December 31, 2015 and 2014. Stock-Based Compensation: The Corporation grants equity awards to employees, consisting of stock options, restricted stock, restricted stock units (RSUs) and performance-based restricted stock units (PSUs) under its Amended and Restated Equity and Cash Incentive Compensation Plan (Employee Equity Plan). In addition, employees may purchase stock under the Corporation’s Employee Stock Purchase Plan (ESPP). The Corporation also grants stock equity awards to non-employee members of its board of directors under the 2011 Directors’ Equity Participation Plan (Directors’ Plan). Under the Directors’ Plan, the Corporation can grant equity awards to non-employee holding company and subsidiary bank directors in the form of stock options, restricted stock or common stock. Stock option fair values are estimated through the use of the Black-Scholes valuation methodology as of the date of grant. Stock options carry terms of up to ten years. The fair value of restricted stock, RSUs and a majority of PSUs are based on the trading price of the Corporation's stock on the date of grant. The fair value of certain PSUs are estimated through the use of the Monte Carlo valuation methodology as of the date of grant. Equity awards issued under the Employee Equity Plan are generally granted annually and become fully vested over or after a three -year vesting period. The vesting period for non-performance-based awards represents the period during which employees are required to provide service in exchange for such awards. Equity awards unde

Restrictions on Cash and Due fr

Restrictions on Cash and Due from Banks	12 Months Ended
	Dec. 31, 2015
Cash and Due from Banks [Abstract]
Restrictions on Cash and Due From Banks	NOTE 2 – RESTRICTIONS ON CASH AND DUE FROM BANKS The Corporation’s subsidiary banks are required to maintain reserves, in the form of cash and balances with the Federal Reserve Bank, against their deposit liabilities. The amounts of such reserves as of December 31, 2015 and 2014 were $91.1 million and $97.0 million , respectively.

Investment Securities

Investment Securities	12 Months Ended
	Dec. 31, 2015
Investments, Debt and Equity Securities [Abstract]
Investment Securities	NOTE 3 – INVESTMENT SECURITIES The following tables present the amortized cost and estimated fair values of investment securities, which were all classified as available for sale, as of December 31 : Amortized Gross Gross Estimated (in thousands) 2015 U.S. Government securities $ — $ — $ — $ — U.S. Government sponsored agency securities 25,154 35 (53 ) 25,136 State and municipal securities 256,746 6,019 — 262,765 Corporate debt securities 100,336 2,695 (6,076 ) 96,955 Collateralized mortgage obligations 835,439 3,042 (16,972 ) 821,509 Mortgage-backed securities 1,154,935 10,104 (6,204 ) 1,158,835 Auction rate securities 106,772 — (8,713 ) 98,059 Total Debt Securities 2,479,382 21,895 (38,018 ) 2,463,259 Equity securities 14,677 6,845 (8 ) 21,514 Total $ 2,494,059 $ 28,740 $ (38,026 ) $ 2,484,773 2014 U.S. Government securities $ 200 $ — $ — $ 200 U.S. Government sponsored agency securities 209 5 — 214 State and municipal securities 238,250 7,231 (266 ) 245,215 Corporate debt securities 99,016 5,126 (6,108 ) 98,034 Collateralized mortgage obligations 917,395 5,705 (20,787 ) 902,313 Mortgage-backed securities 914,797 16,978 (2,944 ) 928,831 Auction rate securities 108,751 — (7,810 ) 100,941 Total Debt Securities 2,278,618 35,045 (37,915 ) 2,275,748 Equity securities 33,469 14,167 (13 ) 47,623 Total $ 2,312,087 $ 49,212 $ (37,928 ) $ 2,323,371 Securities carried at $1.7 billion as of both December 31, 2015 and 2014 were pledged as collateral to secure public and trust deposits and customer repurchase agreements. Equity securities include common stocks of financial institutions (estimated fair value of $20.6 million at December 31, 2015 and $41.8 million at December 31, 2014 ) and other equity investments (estimated fair value of $914,000 at December 31, 2015 and $5.8 million at December 31, 2014 ). As of December 31, 2015 , the financial institutions stock portfolio had a cost basis of $13.9 million and an estimated fair value of $20.6 million , including an investment in a single financial institution with a cost basis of $7.4 million and an estimated fair value of $10.2 million . This investment accounted for 49.5% of the estimated fair value of the Corporation's investments in the common stocks of publicly traded financial institutions. No other investment in the financial institutions stock portfolio exceeded 10% of the portfolio's estimated fair value. The amortized cost and estimated fair values of debt securities as of December 31, 2015 , by contractual maturity, are shown in the following table. Actual maturities may differ from contractual maturities because borrowers may have the right to call or prepay obligations with or without call or prepayment penalties. Amortized Estimated (in thousands) Due in one year or less $ 75,458 $ 75,945 Due from one year to five years 85,840 87,877 Due from five years to ten years 124,190 127,103 Due after ten years 203,520 191,990 489,008 482,915 Collateralized mortgage obligations 835,439 821,509 Mortgage-backed securities 1,154,935 1,158,835 Total $ 2,479,382 $ 2,463,259 The following table presents information related to gross gains and losses on the sales of equity and debt securities, and losses recognized for other-than-temporary impairment of investments: Gross Gross Other- Net (in thousands) 2015: Equity securities $ 6,496 $ (1 ) $ — $ 6,495 Debt securities 2,571 — — 2,571 Total $ 9,067 $ (1 ) $ — $ 9,066 2014: Equity securities $ 335 $ — $ (12 ) $ 323 Debt securities 2,058 (322 ) (18 ) 1,718 Total $ 2,393 $ (322 ) $ (30 ) $ 2,041 2013: Equity securities $ 4,391 $ (28 ) $ (27 ) $ 4,336 Debt securities 3,787 (22 ) (97 ) 3,668 Total $ 8,178 $ (50 ) $ (124 ) $ 8,004 The following table presents a summary of other-than-temporary impairment charges recorded as decreases to investment securities gains on the consolidated statements of income, by investment security type. There were no other-than-temporary impairment charges recorded as decreases to investment securities gains in 2015. 2014 2013 (in thousands) Equity securities - financial institution stocks $ 12 $ 27 Pooled trust preferred securities 18 97 Total other-than-temporary impairment charges $ 30 $ 124 Other-than-temporary impairment charges related to investments in common stocks of financial institutions were due to the severity and duration of the declines in fair values of certain financial institution stocks, in conjunction with management’s assessment of the near-term prospects of each specific financial institution. The credit related other-than-temporary impairment charges for debt securities were determined based on expected cash flows models. The following table presents a summary of the cumulative credit related other-than-temporary impairment charges, recognized as components of earnings, for debt securities held by the Corporation at December 31 : 2015 2014 2013 (in thousands) Balance of cumulative credit losses on debt securities, beginning of year $ (16,242 ) $ (20,691 ) $ (23,079 ) Additions for credit losses recorded which were not previously recognized as components of earnings — (18 ) (97 ) Reductions for securities sold during the period 4,730 4,460 2,468 Reductions for increases in cash flows expected to be collected that are recognized over the remaining life of the security 2 7 17 Balance of cumulative credit losses on debt securities, end of year $ (11,510 ) $ (16,242 ) $ (20,691 ) The following table presents the gross unrealized losses and estimated fair values of investments, aggregated by investment category and length of time that individual securities have been in a continuous unrealized loss position, as of December 31, 2015 : Less Than 12 months 12 Months or Longer Total Estimated Unrealized Estimated Unrealized Estimated Unrealized (in thousands) U.S. Government sponsored agency securities $ 9,957 $ (53 ) $ — $ — $ 9,957 $ (53 ) Corporate debt securities 12,892 (97 ) 33,036 (5,979 ) 45,928 (6,076 ) Collateralized mortgage obligations 166,007 (1,467 ) 467,778 (15,505 ) 633,785 (16,972 ) Mortgage-backed securities 611,920 (4,783 ) 63,818 (1,421 ) 675,738 (6,204 ) Auction rate securities — — 98,059 (8,713 ) 98,059 (8,713 ) Total debt securities 800,776 (6,400 ) 662,691 (31,618 ) 1,463,467 (38,018 ) Equity securities — — 14 (8 ) 14 (8 ) Total $ 800,776 $ (6,400 ) $ 662,705 $ (31,626 ) $ 1,463,481 $ (38,026 ) The Corporation’s collateralized mortgage obligations and mortgage-backed securities have contractual terms that generally do not permit the issuer to settle the securities at a price less than the amortized cost of the investment. Because the decline in fair value of these securities is attributable to changes in interest rates and not credit quality, and because the Corporation does not have the intent to sell and does not believe it will more likely than not be required to sell any of these securities prior to a recovery of their fair value to amortized cost, the Corporation did not consider these investments to be other-than-temporarily impaired as of December 31, 2015 . As of December 31, 2015 , all student loan auction rate certificates (ARCs) were current and making scheduled interest payments and were rated above investment grade, with approximately $5.6 million , or 6% , "AAA" rated and $92.5 million , or 94% , "AA" rated. All of the loans underlying the ARCs have principal payments which are guaranteed by the federal government. Based on management’s evaluations, ARCs with a fair value of $98.1 million were not subject to any other-than-temporary impairment charges as of December 31, 2015 . The Corporation does not have the intent to sell and does not believe it will more likely than not be required to sell these securities prior to a recovery of their fair value to amortized cost, which may be at maturity. For its investments in equity securities, particularly its investments in common stocks of financial institutions, management evaluates the near-term prospects of the issuers in relation to the severity and duration of the impairment. Based on that evaluation and the Corporation’s ability and intent to hold those investments for a reasonable period of time sufficient for a recovery of fair value, the Corporation does not consider those investments with unrealized holding losses as of December 31, 2015 to be other-than-temporarily impaired. The majority of the Corporation’s available for sale corporate debt securities are issued by financial institutions. The following table presents the amortized cost and estimated fair values of corporate debt securities as of December 31 : 2015 2014 Amortized Estimated Amortized Estimated (in thousands) Single-issuer trust preferred securities $ 44,648 $ 39,106 $ 47,569 $ 42,016 Subordinated debt 51,653 53,108 47,530 50,023 Pooled trust preferred securities — 706 2,010 4,088 Corporate debt securities issued by financial institutions 96,301 92,920 97,109 96,127 Other corporate debt securities 4,035 4,035 1,907 1,907 Available for sale corporate debt securities $ 100,336 $ 96,955 $ 99,016 $ 98,034 Single-issuer trust preferred securities had an unrealized loss of $5.5 million as of December 31, 2015 . Seven of the 19 single-issuer trust preferred securities held were rated below investment grade by at least one ratings agency, with an amortized cost of $12.5 million and an estimated fair value of $10.7 million as of December 31, 2015 . All of the single-issuer trust preferred securities rated below investment grade were rated "BB" or "Ba." Two single-issuer trust preferred securities with an amortized cost of $3.7 million and an estimated fair value of $2.6 million as of December 31, 2015 were not rated by any ratings agency. Based on management's evaluations, corporate debt securities with a fair value of $97.0 million were not subject to any additional other-than-temporary impairment charges as of December 31, 2015 . The Corporation does not have the intent to sell and does not believe it will more likely than not be required to sell any of these securities prior to a recovery of their fair value to amortized cost, which may be at maturity.

Loans and Allowance for Credit

Loans and Allowance for Credit Losses	12 Months Ended
	Dec. 31, 2015
Receivables [Abstract]
Loans and Allowance for Credit Losses	NOTE 4 – LOANS AND ALLOWANCE FOR CREDIT LOSSES Loans, net of unearned income Loans, net of unearned income are summarized as follows as of December 31 : 2015 2014 (in thousands) Real estate – commercial mortgage $ 5,462,330 $ 5,197,155 Commercial – industrial, financial and agricultural 4,088,962 3,725,567 Real estate – home equity 1,684,439 1,736,688 Real estate – residential mortgage 1,376,160 1,377,068 Real estate – construction 799,988 690,601 Consumer 268,588 265,431 Leasing and other 170,914 127,562 Overdrafts 2,737 4,021 Loans, gross of unearned income 13,854,118 13,124,093 Unearned income (15,516 ) (12,377 ) Loans, net of unearned income $ 13,838,602 $ 13,111,716 The Corporation has extended credit to the officers and directors of the Corporation and to their associates. These related-party loans are made on substantially the same terms, including interest rates and collateral, as those prevailing at the time for comparable transactions with unrelated persons and do not involve more than the normal risk of collection. The aggregate dollar amount of these loans, including unadvanced commitments, was $191.6 million and $252.6 million as of December 31, 2015 and 2014 , respectively. During 2015 , additions totaled $12,000 and repayments and other changes in related-party loans totaled $61.0 million . The total portfolio of mortgage loans serviced by the Corporation for unrelated third parties was $4.8 billion and $4.9 billion as of December 31, 2015 and 2014 , respectively. Allowance for Credit Losses The following table presents the components of the allowance for credit losses as of December 31 : 2015 2014 2013 (in thousands) Allowance for loan losses $ 169,054 $ 184,144 $ 202,780 Reserve for unfunded lending commitments 2,358 1,787 2,137 Allowance for credit losses $ 171,412 $ 185,931 $ 204,917 The following table presents the activity in the allowance for credit losses for the years ended December 31 : 2015 2014 2013 (in thousands) Balance at beginning of year $ 185,931 $ 204,917 $ 225,439 Loans charged off (32,157 ) (44,593 ) (80,212 ) Recoveries of loans previously charged off 15,388 13,107 19,190 Net loans charged off (16,769 ) (31,486 ) (61,022 ) Provision for credit losses 2,250 12,500 40,500 Balance at end of year $ 171,412 $ 185,931 $ 204,917 The following table presents the activity in the allowance for loan losses by portfolio segment for the years ended December 31 and loans, net of unearned income, and their related allowance for loan losses, by portfolio segment, as of December 31: Real Estate - Commercial - Real Estate - Real Estate - Real Estate - Consumer Leasing Unallocated (1) Total (in thousands) Balance at December 31, 2013 $ 55,659 $ 50,330 $ 28,222 $ 33,082 $ 12,649 $ 3,260 $ 3,370 $ 16,208 $ 202,780 Loans charged off (6,004 ) (24,516 ) (5,486 ) (2,918 ) (1,209 ) (2,325 ) (2,135 ) — (44,593 ) Recoveries of loans previously charged off 1,960 4,256 1,025 451 3,177 1,322 916 — 13,107 Net loans charged off (4,044 ) (20,260 ) (4,461 ) (2,467 ) 1,968 (1,003 ) (1,219 ) — (31,486 ) Provision for loan losses (2) 1,878 21,308 4,510 (1,543 ) (4,861 ) 758 (352 ) (8,848 ) 12,850 Balance at December 31, 2014 53,493 51,378 28,271 29,072 9,756 3,015 1,799 7,360 184,144 Loans charged off (4,218 ) (15,639 ) (3,604 ) (3,612 ) (201 ) (2,227 ) (2,656 ) — (32,157 ) Recoveries of loans previously charged off 2,801 5,264 1,362 1,322 2,824 1,130 685 — 15,388 Net loans charged off (1,417 ) (10,375 ) (2,242 ) (2,290 ) 2,623 (1,097 ) (1,971 ) — (16,769 ) Provision for loan losses (2) (4,210 ) 16,095 (3,624 ) (5,407 ) (5,850 ) 667 2,640 1,368 1,679 Balance at December 31, 2015 $ 47,866 $ 57,098 $ 22,405 $ 21,375 $ 6,529 $ 2,585 $ 2,468 $ 8,728 $ 169,054 Allowance for loan losses at December 31, 2015 Measured for impairment under FASB ASC Subtopic 450-20 $ 35,395 $ 42,515 $ 14,412 $ 7,953 $ 4,134 $ 2,563 $ 1,764 $ 8,728 $ 117,464 Evaluated for impairment under FASB ASC Section 310-10-35 12,471 14,583 7,993 13,422 2,395 22 704 N/A 51,590 $ 47,866 $ 57,098 $ 22,405 $ 21,375 $ 6,529 $ 2,585 $ 2,468 $ 8,728 $ 169,054 Loans, net of unearned income at December 31, 2015 Measured for impairment under FASB ASC Subtopic 450-20 $ 5,404,036 $ 4,040,810 $ 1,668,673 $ 1,325,735 $ 784,002 $ 268,555 $ 156,710 N/A $ 13,648,521 Evaluated for impairment under FASB ASC Section 310-10-35 58,294 48,152 15,766 50,425 15,986 33 1,425 N/A 190,081 $ 5,462,330 $ 4,088,962 $ 1,684,439 $ 1,376,160 $ 799,988 $ 268,588 $ 158,135 N/A $ 13,838,602 Allowance for loan losses at December 31, 2014 Measured for impairment under FASB ASC Subtopic 450-20 $ 36,778 $ 38,348 $ 19,047 $ 10,480 $ 6,485 $ 2,980 $ 1,799 $ 7,360 $ 123,277 Evaluated for impairment under FASB ASC Section 310-10-35 16,715 13,030 9,224 18,592 3,271 35 — N/A 60,867 $ 53,493 $ 51,378 $ 28,271 $ 29,072 $ 9,756 $ 3,015 $ 1,799 $ 7,360 $ 184,144 Loans, net of unearned income at December 31, 2014 Measured for impairment under FASB ASC Subtopic 450-20 $ 5,133,896 $ 3,690,561 $ 1,723,230 $ 1,325,717 $ 665,012 $ 265,393 $ 119,206 N/A $ 12,923,015 Evaluated for impairment under FASB ASC Section 310-10-35 63,259 35,006 13,458 51,351 25,589 38 — N/A 188,701 $ 5,197,155 $ 3,725,567 $ 1,736,688 $ 1,377,068 $ 690,601 $ 265,431 $ 119,206 N/A $ 13,111,716 (1) The unallocated allowance, which was approximately 5% and 4% of the total allowance for credit losses as of December 31, 2015 and December 31, 2014 , respectively, was, in the opinion of management, reasonable and appropriate given that the estimates used in the allocation process are inherently imprecise. (2) For the year ended December 31, 2015 , the provision for loan losses excluded a $571,000 increase in the reserve for unfunded lending commitments. The total provision for credit losses, comprised of allocations for both funded and unfunded loans, was $2.3 million for the year ended December 31, 2015 . For the year ended December 31, 2014 , the provision for loan losses excluded a $350,000 decrease in the reserve for unfunded lending commitments. The total provision for credit losses, was $12.5 million for the year ended December 31, 2014 . N/A – Not applicable. Impaired Loans The following table presents total impaired loans by class segment as of December 31 : 2015 2014 Unpaid Recorded Related Unpaid Recorded Related (in thousands) With no related allowance recorded: Real estate - commercial mortgage $ 27,872 $ 22,596 $ — $ 25,802 $ 23,236 $ — Commercial - secured 18,012 13,702 — 17,599 14,582 — Real estate - residential mortgage 4,790 4,790 — 4,873 4,873 — Construction - commercial residential 9,916 8,865 — 18,041 14,801 — Construction - commercial — — — 1,707 1,581 — 60,590 49,953 68,022 59,073 With a related allowance recorded: Real estate - commercial mortgage 45,189 35,698 12,471 49,619 40,023 16,715 Commercial - secured 39,659 33,629 14,085 24,824 19,335 12,165 Commercial - unsecured 971 821 498 1,241 1,089 865 Real estate - home equity 20,347 15,766 7,993 19,392 13,458 9,224 Real estate - residential mortgage 55,242 45,635 13,422 56,607 46,478 18,592 Construction - commercial residential 9,949 6,290 2,110 14,007 7,903 2,675 Construction - commercial 820 638 217 1,501 1,023 459 Construction - other 331 193 68 452 281 137 Consumer - indirect 14 14 8 20 19 18 Consumer - direct 19 19 14 19 19 17 Leasing and other and overdrafts 1,658 1,425 704 — — — 174,199 140,128 51,590 167,682 129,628 60,867 Total $ 234,789 $ 190,081 $ 51,590 $ 235,704 $ 188,701 $ 60,867 As of December 31, 2015 and 2014 , there were $50.0 million and $59.1 million , respectively, of impaired loans that did not have a related allowance for loan loss. The estimated fair values of the collateral securing these loans exceeded their carrying amount, or the loans have been charged down to realizable collateral values. Accordingly, no specific valuation allowance was considered to be necessary. The following table presents average impaired loans, by class segment, for the years ended December 31 : 2015 2014 2013 Average Interest Income Average Interest Income Average Interest Income (in thousands) With no related allowance recorded: Real estate - commercial mortgage $ 25,345 $ 315 $ 23,467 $ 320 $ 28,603 $ 489 Commercial - secured 15,654 97 18,928 119 30,299 173 Commercial - unsecured 17 — — — 26 — Real estate - home equity — — 180 1 262 1 Real estate - residential mortgage 5,389 124 1,532 31 695 25 Construction - commercial residential 11,685 148 15,421 227 19,847 256 Construction - commercial 915 — 1,907 — 3,480 2 59,005 684 61,435 698 83,212 946 With a related allowance recorded: Real estate - commercial mortgage 39,232 475 38,240 524 44,136 706 Commercial - secured 25,660 150 20,991 129 27,919 153 Commercial - unsecured 1,749 6 895 3 1,411 5 Real estate - home equity 13,887 144 13,976 108 14,092 65 Real estate - residential mortgage 46,252 1,041 50,281 1,178 52,251 1,210 Construction - commercial residential 6,455 79 8,723 136 11,219 168 Construction - commercial 931 — 1,900 — 2,468 3 Construction - other 263 — 387 — 523 1 Consumer - indirect 16 1 7 — 1 — Consumer - direct 17 1 16 1 19 — Leasing and other and overdrafts 285 — — — 11 — 134,747 1,897 135,416 2,079 154,050 2,311 Total $ 193,752 $ 2,581 $ 196,851 $ 2,777 $ 237,262 $ 3,257 (1) All impaired loans, excluding accruing TDRs, were non-accrual loans. Interest income recognized for the years ended December 31, 2015 , 2014 and 2013 represents amounts earned on accruing TDRs. Credit Quality Indicators and Non-performing Assets The following table presents internal credit risk ratings as of December 31 : Pass Special Mention Substandard or Lower Total 2015 2014 2015 2014 2015 2014 2015 2014 (dollars in thousands) Real estate - commercial mortgage $ 5,204,263 $ 4,899,016 $ 102,625 $ 127,302 $ 155,442 $ 170,837 $ 5,462,330 $ 5,197,155 Commercial - secured 3,696,692 3,333,486 92,711 120,584 136,710 110,544 3,926,113 3,564,614 Commercial -unsecured 156,742 146,680 2,761 7,463 3,346 6,810 162,849 160,953 Total commercial - industrial, financial and agricultural 3,853,434 3,480,166 95,472 128,047 140,056 117,354 4,088,962 3,725,567 Construction - commercial residential 140,337 136,109 17,154 27,495 21,812 40,066 179,303 203,670 Construction - commercial 552,710 409,631 3,684 12,202 3,597 5,586 559,991 427,419 Total real estate - construction (excluding construction - other) 693,047 545,740 20,838 39,697 25,409 45,652 739,294 631,089 Total $ 9,750,744 $ 8,924,922 $ 218,935 $ 295,046 $ 320,907 $ 333,843 $ 10,290,586 $ 9,553,811 % of Total 94.8 % 93.4 % 2.1 % 3.1 % 3.1 % 3.5 % 100.0 % 100.0 % The following table presents delinquency and non-performing status for loans that do not have internal credit risk ratings, by class segment, as of December 31 : Performing Delinquent (1) Non-performing (2) Total 2015 2014 2015 2014 2015 2014 2015 2014 (dollars in thousands) Real estate - home equity $ 1,660,773 $ 1,711,017 $ 8,983 $ 10,931 $ 14,683 $ 14,740 $ 1,684,439 $ 1,736,688 Real estate - residential mortgage 1,329,371 1,321,139 18,305 26,934 28,484 28,995 1,376,160 1,377,068 Real estate - construction - other 59,997 59,180 88 — 609 332 60,694 59,512 Consumer - direct 94,262 104,018 2,254 2,891 2,203 2,414 98,719 109,323 Consumer - indirect 166,823 153,358 2,809 2,574 237 176 169,869 156,108 Total consumer 261,085 257,376 5,063 5,465 2,440 2,590 268,588 265,431 Leasing and other and overdrafts 155,870 118,550 759 523 1,506 133 158,135 119,206 Total $ 3,467,096 $ 3,467,262 $ 33,198 $ 43,853 $ 47,722 $ 46,790 $ 3,548,016 $ 3,557,905 % of Total 97.7 % 97.5 % 1.0 % 1.2 % 1.3 % 1.3 % 100.0 % 100.0 % (1) Includes all accruing loans 30 days to 89 days past due. (2) Includes all accruing loans 90 days or more past due and all non-accrual loans. The following table presents total non-performing assets as of December 31 : 2015 2014 (in thousands) Non-accrual loans $ 129,523 $ 121,080 Loans 90 days or more past due and still accruing 15,291 17,402 Total non-performing loans 144,814 138,482 Other real estate owned 11,099 12,022 Total non-performing assets $ 155,913 $ 150,504 The following table presents past due status and non-accrual loans, by portfolio segment and class segment, as of December 31 : 2015 30-59 60-89 ≥ 90 Days Non- Total ≥ 90 Total Past Current Total (in thousands) Real estate - commercial mortgage $ 6,469 $ 1,312 $ 439 $ 40,731 $ 41,170 $ 48,951 $ 5,413,379 $ 5,462,330 Commercial - secured 5,654 2,615 1,853 41,498 43,351 51,620 3,874,493 3,926,113 Commercial - unsecured 510 83 19 701 720 1,313 161,536 162,849 Total Commercial - industrial, financial and agricultural 6,164 2,698 1,872 42,199 44,071 52,933 4,036,029 4,088,962 Real estate - home equity 6,438 2,545 3,473 11,210 14,683 23,666 1,660,773 1,684,439 Real estate - residential mortgage 15,141 3,164 6,570 21,914 28,484 46,789 1,329,371 1,376,160 Construction - commercial 50 176 — 638 638 864 559,127 559,991 Construction - commercial residential 1,366 494 — 11,213 11,213 13,073 166,230 179,303 Construction - other 88 — 416 193 609 697 59,997 60,694 Total Real estate - construction 1,504 670 416 12,044 12,460 14,634 785,354 799,988 Consumer - direct 1,687 567 2,203 — 2,203 4,457 94,262 98,719 Consumer - indirect 2,308 501 237 — 237 3,046 166,823 169,869 Total Consumer 3,995 1,068 2,440 — 2,440 7,503 261,085 268,588 Leasing and other and overdrafts 483 276 81 1,425 1,506 2,265 155,870 158,135 $ 40,194 $ 11,733 $ 15,291 $ 129,523 $ 144,814 $ 196,741 $ 13,641,861 $ 13,838,602 2014 30-59 60-89 ≥ 90 Days Non- Total ≥ 90 Total Past Current Total (in thousands) Real estate - commercial mortgage $ 14,399 $ 3,677 $ 800 $ 44,437 $ 45,237 $ 63,313 $ 5,133,842 $ 5,197,155 Commercial - secured 4,839 958 610 28,747 29,357 35,154 3,529,460 3,564,614 Commercial - unsecured 395 65 9 1,022 1,031 1,491 159,462 160,953 Total Commercial - industrial, financial and agricultural 5,234 1,023 619 29,769 30,388 36,645 3,688,922 3,725,567 Real estate - home equity 8,048 2,883 4,257 10,483 14,740 25,671 1,711,017 1,736,688 Real estate - residential mortgage 18,789 8,145 8,952 20,043 28,995 55,929 1,321,139 1,377,068 Construction - commercial — — — 2,604 2,604 2,604 424,815 427,419 Construction - commercial residential 160 — — 13,463 13,463 13,623 190,047 203,670 Construction - other — — 51 281 332 332 59,180 59,512 Total Real estate - construction 160 — 51 16,348 16,399 16,559 674,042 690,601 Consumer - direct 2,034 857 2,414 — 2,414 5,305 104,018 109,323 Consumer - indirect 2,156 418 176 — 176 2,750 153,358 156,108 Total Consumer 4,190 1,275 2,590 — 2,590 8,055 257,376 265,431 Leasing and other and overdrafts 357 166 133 — 133 656 118,550 119,206 $ 51,177 $ 17,169 $ 17,402 $ 121,080 $ 138,482 $ 206,828 $ 12,904,888 $ 13,111,716 The following table presents TDRs as of December 31 : 2015 2014 (in thousands) Real-estate - residential mortgage $ 28,511 $ 31,308 Real-estate - commercial mortgage 17,563 18,822 Construction - commercial residential 3,942 9,241 Commercial - secured 5,833 5,170 Real estate - home equity 4,556 2,975 Commercial - unsecured 120 67 Consumer - direct 19 19 Consumer - indirect 14 19 Total accruing TDRs 60,558 67,621 Non-accrual TDRs (1) 31,035 24,616 Total TDRs $ 91,593 $ 92,237 (1) Included within non-accrual loans in the preceding table. As of December 31, 2015 and 2014 , there were $ 5.3 million and $ 3.9 million , respectively, of commitments to lend additional funds to borrowers whose loans were modified under TDRs. The following table presents TDRs by class segment and type of concession for loans that were modified during the years ended December 31, 2015 and 2014: 2015 2014 Number of Loans Post-Modification Recorded Investment Number of Loans Post-Modification Recorded Investment (dollars in thousands) Commercial – secured: Extend maturity with rate concession 2 $ 127 3 $ 315 Extend maturity without rate concession 9 3,785 8 1,640 Commercial – unsecured: Extend maturity without rate concession 1 38 — — Real estate - commercial mortgage: Extend maturity with rate concession 5 2,014 1 60 Extend maturity without rate concession 4 639 7 6,781 Real estate - home equity: Extend maturity with rate concession 2 36 — — Extend maturity without rate concession 3 203 — — Bankruptcy 52 2,501 30 1,551 Real estate – residential mortgage: Extend maturity with rate concession 4 750 2 390 Extend maturity without rate concession 3 262 2 210 Bankruptcy 7 2,508 19 1,807 Construction - commercial residential: Extend maturity without rate concession 1 1,535 3 3,616 Consumer - direct: Bankruptcy 2 6 7 7 Consumer - indirect: Bankruptcy 1 12 4 20 Total 96 $ 14,416 86 $ 16,397 The following table presents TDRs, by class segment, as of December 31, 2015 and 2014 that were modified during the years ended December 31, 2015 and 2014 and had a post-modification payment default during their respective year of modification. The Corporation defines a payment default as a single missed scheduled payment: 2015 2014 Number of Loans Recorded Investment Number of Loans Recorded Investment (dollars in thousands) Construction - commercial residential — $ — 2 $ 1,803 Real estate - commercial mortgage 4 359 2 1,660 Real estate - residential mortgage 4 445 11 1,430 Commercial - secured 8 3,549 4 1,208 Real estate - home equity 13 763 11 961 Consumer - direct — — 1 1 Total 29 $ 5,116 31 $ 7,063

Premises and Equipment

Premises and Equipment	12 Months Ended
	Dec. 31, 2015
Property, Plant and Equipment [Abstract]
Premises and Equipment	NOTE 5 – PREMISES AND EQUIPMENT The following is a summary of premises and equipment as of December 31 : 2015 2014 (in thousands) Land $ 37,380 $ 37,667 Buildings and improvements 297,018 287,271 Furniture and equipment 136,029 176,808 Construction in progress 16,585 21,055 487,012 522,801 Less: Accumulated depreciation and amortization (261,477 ) (296,774 ) $ 225,535 $ 226,027

Goodwill and Intangible Assets

Goodwill and Intangible Assets	12 Months Ended
	Dec. 31, 2015
Goodwill and Intangible Assets Disclosure [Abstract]
Goodwill and Intangible Assets	NOTE 6 – GOODWILL AND INTANGIBLE ASSETS The following table summarizes the changes in goodwill: 2015 2014 2013 (in thousands) Balance at beginning of year $ 530,593 $ 530,607 $ 530,656 Other goodwill deductions — (14 ) (49 ) Balance at end of year $ 530,593 $ 530,593 $ 530,607 All of the Corporation’s reporting units passed the 2015 goodwill impairment test, resulting in no goodwill impairment charges in 2015 . One reporting unit, with total allocated goodwill of $167.5 million , had a fair value that exceeded adjusted net book value by less than 5% . The remaining six reporting units, with total allocated goodwill of $363.1 million , had fair values that exceeded net book values by approximately 51% in the aggregate. The estimated fair values of the Corporation’s reporting units are subject to uncertainty, including future changes in fair values of banks in general and future operating results of reporting units, which could differ significantly from the assumptions used in the valuation of reporting units. The following table summarizes intangible assets as of December 31 : 2015 2014 Gross Accumulated Net Gross Accumulated Net (in thousands) Amortizing: Core deposit $ 50,279 $ (50,279 ) $ — $ 50,279 $ (50,054 ) $ 225 Other 9,123 (9,123 ) — 9,123 (9,101 ) 22 Total amortizing 59,402 (59,402 ) — 59,402 (59,155 ) 247 Non-amortizing 963 — 963 963 — 963 $ 60,365 $ (59,402 ) $ 963 $ 60,365 $ (59,155 ) $ 1,210 Core deposit intangible assets are amortized using an accelerated method over the estimated remaining life of the acquired core deposits. Other amortizing intangible assets consist primarily of premiums paid on branch acquisitions in prior years that did not qualify for business combinations accounting under FASB ASC Topic 810. As December 31, 2015 , all amortizing intangible assets were fully amortized. Amortization expense related to intangible assets totaled $247,000 , $1.3 million and $2.4 million in 2015 , 2014 and 2013 , respectively. No amortization is expected in future years with respect to these intangible assets.

Mortgage Servicing Rights

Mortgage Servicing Rights	12 Months Ended
	Dec. 31, 2015
Transfers and Servicing [Abstract]
Mortgage Servicing Rights	NOTE 7 – MORTGAGE SERVICING RIGHTS The following table summarizes the changes in MSRs, which are included in other assets on the consolidated balance sheets: 2015 2014 (in thousands) Amortized cost: Balance at beginning of year $ 42,148 $ 42,452 Originations of mortgage servicing rights 6,166 5,047 Amortization expense (7,370 ) (5,351 ) Balance at end of year $ 40,944 $ 42,148 MSRs represent the economic value of existing contractual rights to service mortgage loans that have been sold. Accordingly, actual and expected prepayments of the underlying mortgage loans can impact the value of MSRs. The Corporation accounts for MSRs at the lower of amortized cost or fair value. The fair value of MSRs is estimated by discounting the estimated cash flows from servicing income, net of expense, over the expected life of the underlying loans at a discount rate commensurate with the risk associated with these assets. Expected life is based on the contractual terms of the loans, as adjusted for estimated prepayments. The estimated fair value of MSRs were $45.3 million and $46.0 million as of December 31, 2015 and 2014, respectively, which exceeded their book values Total MSR amortization expense, recognized as a reduction to mortgage banking income in the consolidated statements of income, was $7.4 million and $5.4 million in 2015 and 2014, respectively. Estimated MSR amortization expense for the next five years, based on balances as of December 31, 2015 and the estimated remaining lives of the underlying loans, follows (in thousands): Year 2016 $ 10,681 2017 9,292 2018 7,774 2019 6,118 2020 4,316

Deposits

Deposits	12 Months Ended
	Dec. 31, 2015
Deposits [Abstract]
Deposits	NOTE 8 – DEPOSITS Deposits consisted of the following as of December 31 : 2015 2014 (in thousands) Noninterest-bearing demand $ 3,948,114 $ 3,640,623 Interest-bearing demand 3,451,207 3,150,612 Savings and money market accounts 3,868,046 3,504,820 Time deposits 2,864,950 3,071,451 $ 14,132,317 $ 13,367,506 Included in time deposits were certificates of deposit equal to or greater than $100,000 of $1.2 billion as of both December 31, 2015 and 2014 . Time deposits of $250,000 or more were $359.9 million and $366.7 million as of December 31, 2015 and 2014 , respectively. The scheduled maturities of time deposits as of December 31, 2015 were as follows (in thousands): Year 2016 $ 1,342,716 2017 508,171 2018 239,480 2019 527,480 2020 163,559 Thereafter 83,544 $ 2,864,950

Short-Term Borrowings and Long-

Short-Term Borrowings and Long-Term Debt	12 Months Ended
	Dec. 31, 2015
Short-Term Borrowings and Long-Term Debt [Abstract]
Short-Term Borrowings and Long-Term Debt	NOTE 9 – SHORT-TERM BORROWINGS AND LONG-TERM DEBT Short-term borrowings as of December 31, 2015 , 2014 and 2013 and the related maximum amounts outstanding at the end of any month in each of the three years then ended are presented below. The securities underlying the repurchase agreements remain in available for sale investment securities. December 31, Maximum Outstanding 2015 2014 2013 2015 2014 2013 (in thousands) Federal funds purchased $ 197,235 $ 6,219 $ 582,436 $ 266,338 $ 577,581 $ 848,179 Short-term FHLB advances (1) 110,000 70,000 400,000 200,000 600,000 600,000 Customer repurchase agreements 111,496 158,394 175,621 212,509 244,729 215,305 Customer short-term promissory notes 78,932 95,106 100,572 93,176 95,106 115,129 $ 497,663 $ 329,719 $ 1,258,629 (1) Represents FHLB advances with an original maturity term of less than one year. As of December 31, 2015 , the Corporation had aggregate availability under Federal funds lines of $1.0 billion , with $197.2 million borrowed against that amount. A combination of commercial real estate loans, commercial loans and securities were pledged to the Federal Reserve Bank of Philadelphia to provide access to Federal Reserve Bank Discount Window borrowings. As of December 31, 2015 and 2014 , the Corporation had $1.2 billion and $1.1 billion , respectively, of collateralized borrowing availability at the Discount Window, and no outstanding borrowings. The following table presents information related to customer repurchase agreements: 2015 2014 2013 (dollars in thousands) Amount outstanding as of December 31 $ 111,496 $ 158,394 $ 175,621 Weighted average interest rate as of December 31 0.15 % 0.13 % 0.12 % Average amount outstanding during the year $ 161,093 $ 197,432 $ 186,851 Weighted average interest rate during the year 0.10 % 0.10 % 0.11 % FHLB advances with an original maturity of one year or more and long-term debt included the following as of December 31 : 2015 2014 (in thousands) FHLB advances $ 587,756 $ 673,107 Subordinated debt 350,000 300,000 Junior subordinated deferrable interest debentures 16,496 171,136 Unamortized discounts and issuance costs (4,710 ) (4,830 ) $ 949,542 $ 1,139,413 Excluded from the preceding table is the Parent Company’s revolving line of credit with its subsidiary banks. As of December 31, 2015 and 2014 , there were no amounts outstanding under this line of credit. This line of credit, with a total commitment of $100.0 million , is secured by equity securities and insurance investments and bears interest at London Interbank Offered Rate (LIBOR) plus 2.00% . The amount that the Corporation is permitted to borrow under this commitment at any given time is subject to a formula based on a percentage of the value of the collateral pledged. Although balances drawn on the line of credit and related interest income and expense are eliminated in the consolidated financial statements, this borrowing arrangement is senior to the subordinated debt and the junior subordinated deferrable interest debentures. FHLB advances mature through October 2022 and carry a weighted average interest rate of 3.9% . As of December 31, 2015 , the Corporation had an additional borrowing capacity of approximately $2.6 billion with the FHLB. Advances from the FHLB are secured by FHLB stock, qualifying residential mortgages, investments and other assets. The following table summarizes the scheduled maturities of FHLB advances with an original maturity of one year or more and long-term debt as of December 31, 2015 (in thousands): Year 2016 $ 235,937 2017 114,539 2018 — 2019 186,760 2020 142,370 Thereafter 269,936 $ 949,542 In June 2015 , the Corporation issued $150.0 million of ten -year subordinated notes, which mature on November 15, 2024 and carry a fixed rate of 4.50% and an effective rate of approximately 4.69% as a result of discounts and issuance costs. Interest is paid semi-annually in May and November . In November 2014 , the Corporation issued $100.0 million of ten -year subordinated notes, which mature on November 15, 2024 and carry a fixed rate of 4.50% and an effective rate of approximately 4.87% as a result of discounts and issuance costs. Interest is paid semi-annually in May and November . In May 2007 , the Corporation issued $100.0 million of ten -year subordinated notes, which mature on May 1, 2017 and carry a fixed rate of 5.75% and an effective rate of approximately 5.96% as a result of discounts and issuance costs. Interest is paid semi-annually in May and November . On April 1, 2015 , $100.0 million of the Corporation's outstanding subordinated debt originally issued in March 2005 , with an effective rate of approximately 5.49% , matured and was fully repaid. As of December 31, 2015, the Parent Company owned all of the common stock of three subsidiary trusts, which have issued TruPS in conjunction with the Parent Company issuing junior subordinated deferrable interest debentures to the trusts. The TruPS are redeemable on specified dates, or earlier if certain events arise. In the third quarter of 2015 , $150.0 million of TruPS, with a scheduled maturity of February 1, 2036 and an effective rate of approximately 6.52% , were redeemed. As a result of this transaction, the Corporation recorded a $5.6 million loss on redemption, included as a component of non-interest expense. The loss on redemption consisted of $1.8 million of unamortized issuance costs and $2.5 million , net of a $1.3 million tax effect, of unamortized losses on a cash flow hedge recorded in accumulated other comprehensive income. The following table provides details of the debentures as of December 31, 2015 (dollars in thousands): Debentures Issued to Fixed/ Interest Amount Maturity Callable Call Price Columbia Bancorp Statutory Trust Variable 2.88 % $ 6,186 06/30/34 03/31/16 100.0 Columbia Bancorp Statutory Trust II Variable 2.40 % 4,124 03/15/35 03/15/16 100.0 Columbia Bancorp Statutory Trust III Variable 2.28 % 6,186 06/15/35 03/15/16 100.0 $ 16,496

Derivative Financial Instrument

Derivative Financial Instruments	12 Months Ended
	Dec. 31, 2015
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Derivative Financial Instruments	NOTE 10 – DERIVATIVE FINANCIAL INSTRUMENTS The following table presents the notional amounts and fair values of derivative financial instruments as of December 31 : 2015 2014 Notional Asset Notional Asset (in thousands) Interest Rate Locks with Customers Positive fair values $ 87,781 $ 1,291 $ 89,655 $ 1,391 Negative fair values 267 (16 ) 301 (6 ) Net interest rate locks with customers 1,275 1,385 Forward Commitments Positive fair values 69,045 205 — — Negative fair values 16,193 (24 ) 93,802 (1,164 ) Net forward commitments 181 (1,164 ) Interest Rate Swaps with Customers Positive fair values 846,490 32,915 468,080 19,716 Negative fair values 8,757 (55 ) 25,418 (198 ) Net interest rate swaps with customers 32,860 19,518 Interest Rate Swaps with Dealer Counterparties Positive fair values 8,757 55 25,418 198 Negative fair values 846,490 (32,915 ) 468,080 (19,716 ) Net interest rate swaps with dealer counterparties (32,860 ) (19,518 ) Foreign Exchange Contracts with Customers Positive fair values 4,897 114 11,616 810 Negative fair values 8,050 (184 ) 5,250 (441 ) Net foreign exchange contracts with customers (70 ) 369 Foreign Exchange Contracts with Correspondent Banks Positive fair values 9,728 428 5,287 446 Negative fair values 6,899 (147 ) 13,572 (876 ) Net foreign exchange contracts with correspondent banks 281 (430 ) Net derivative fair value asset $ 1,667 $ 160 The following table presents the fair value gains and losses on derivative financial instruments for the years ended December 31: 2015 2014 2013 Statement of Income Classification (in thousands) Interest rate locks with customers $ (110 ) $ 577 $ (5,949 ) Mortgage banking income Forward commitments 1,345 (2,422 ) 1,466 Mortgage banking income Interest rate swaps with customers 13,342 20,406 (7,978 ) Other non-interest expense Interest rate swaps with counterparties (13,342 ) (20,406 ) 7,978 Other non-interest expense Foreign exchange contracts with customers (439 ) 688 (108 ) Other service charges and fees Foreign exchange contracts with correspondent banks 711 (880 ) 507 Other service charges and fees Net fair value gains (losses) on derivative financial instruments $ 1,507 $ (2,037 ) $ (4,084 ) The Corporation has elected to record mortgage loans held for sale at fair value. The following table presents a summary of mortgage loans held for sale and the impact of the fair value election on the consolidated financial statements as of and for the years ended December 31, 2015 and 2014 : Cost (1) Fair Value Balance Sheet Fair Value (Loss) Gain Statement of Income Classification (in thousands) December 31, 2015: Mortgage loans held for sale $ 16,584 $ 16,886 Loans held for sale $ (140 ) Mortgage banking income December 31, 2014: Mortgage loans held for sale 17,080 17,522 Loans held for sale 263 Mortgage banking income (1) Cost basis of mortgage loans held for sale represents the unpaid principal balance. The fair values of interest rate swap agreements the Corporation enters into with customers and dealer counterparties may be eligible for offset on the consolidated balance sheets as they are subject to master netting arrangements or similar agreements. The Corporation elects to not offset assets and liabilities subject to such arrangements on the consolidated financial statements. The following table presents the financial instruments that are eligible for offset, and the effects of offsetting, on the consolidated balance sheets as of December 31: Gross Amounts Gross Amounts Not Offset Recognized on the Consolidated on the Balance Sheets Consolidated Financial Cash Net Balance Sheets Instruments (1) Collateral (2) Amount (in thousands) 2015 Interest rate swap derivative assets $ 32,970 $ (55 ) $ — $ 32,915 Foreign exchange derivative assets with correspondent banks 428 (147 ) — 281 Total $ 33,398 $ (202 ) $ — $ 33,196 Interest rate swap liabilities $ 32,970 $ (55 ) $ (31,130 ) $ 1,785 Foreign exchange derivative liabilities with correspondent banks 147 (147 ) — — Total $ 33,117 $ (202 ) $ (31,130 ) $ 1,785 2014 Interest rate swap derivative assets $ 19,914 $ (206 ) $ — $ 19,708 Foreign exchange derivative assets with correspondent banks 446 (446 ) — — Total $ 20,360 $ (652 ) $ — $ 19,708 Interest rate swap liabilities $ 19,914 $ (206 ) $ (19,210 ) $ 498 Foreign exchange derivative liabilities with correspondent banks 876 (446 ) (310 ) 120 Total $ 20,790 $ (652 ) $ (19,520 ) $ 618 (1) For interest rate swap assets, amounts represent any derivative liability fair values that could be offset in the event of counterparty or customer default. For interest rate swap liabilities, amounts represent any derivative asset fair values that could be offset in the event of counterparty or customer default. (2) Amounts represent cash collateral posted on interest rate swap transactions with financial institution counterparties. Interest rate swaps with customers are collateralized by the underlying loans to those borrowers.

Regulatory Matters

Regulatory Matters	12 Months Ended
	Dec. 31, 2015
Regulatory Matters [Abstract]
Regulatory Matters	NOTE 11 – REGULATORY MATTERS Regulatory Capital Requirements The Corporation’s subsidiary banks are subject to regulatory capital requirements administered by banking regulators. Failure to meet minimum capital requirements can trigger certain mandatory – and possibly additional discretionary – actions by regulators that, if undertaken, could have a direct material effect on the Corporation’s financial statements. Under capital adequacy guidelines and the regulatory framework for prompt corrective action, the subsidiary banks must meet specific capital guidelines that involve quantitative measures of the subsidiary banks’ assets, liabilities, and certain off-balance sheet items as calculated under regulatory accounting practices. The subsidiary banks’ capital amounts and classification are also subject to qualitative judgments by the regulators about components, risk weightings, and other factors. U.S. Basel III Capital Rules In July 2013, the Federal Reserve Board approved final rules (the U.S. Basel III Capital Rules) establishing a new comprehensive capital framework for U.S. banking organizations and implementing the Basel Committee on Banking Supervision's December 2010 framework for strengthening international capital standards. The U.S. Basel III Capital Rules substantially revise the risk-based capital requirements applicable to bank holding companies and depository institutions. The new minimum regulatory capital requirements established by the U.S. Basel III Capital Rules became effective for the Corporation on January 1, 2015, and become fully phased in on January 1, 2019. When fully phased in, the U.S. Basel III Capital Rules will require the Corporation and its bank subsidiaries to: • Meet a new minimum Common Equity Tier 1 capital ratio of 4.50% of risk-weighted assets and a minimum Tier 1 capital of 6.00% of risk-weighted assets; • Continue to require the current minimum Total capital ratio of 8.00% of risk-weighted assets and the minimum Tier 1 leverage capital ratio of 4.00% of average assets; • Maintain a "capital conservation buffer" of 2.50% above the minimum risk-based capital requirements, which must be maintained to avoid restrictions on capital distributions and certain discretionary bonus payments; and • Comply with a revised definition of capital to improve the ability of regulatory capital instruments to absorb losses. Certain non-qualifying capital instruments, including cumulative preferred stock and TruPS, will be excluded as a component of Tier 1 capital for institutions of the Corporation's size. In July 2015, the previously outstanding trust preferred securities issued by Fulton Capital Trust I were redeemed. The U.S. Basel III Capital Rules use a standardized approach for risk weightings that expand the risk-weightings for assets and off-balance sheet exposures from the previous 0%, 20%, 50% and 100% categories to a much larger and more risk-sensitive number of categories, depending on the nature of the assets and off-balance sheet exposures, resulting in higher risk weights for a variety of asset categories. When fully phased in on January 1, 2019, the Corporation and its bank subsidiaries will also be required to maintain a "capital conservation buffer" of 2.50% above the minimum risk-based capital requirements. The required minimum capital conservation buffer began to be phased in incrementally, starting at 0.625%, on January 1, 2016, and will increase to 1.25% on January 1, 2017, 1.875% on January 1, 2018 and 2.50% on January 1, 2019. The rules provide that the failure to maintain the "capital conservation buffer" will result in restrictions on capital distributions and discretionary cash bonus payments to executive officers. As a result, under the U.S. Basel III Capital Rules, if any of the Corporation's bank subsidiaries fails to maintain the required minimum capital conservation buffer, the Corporation will be subject to limits, and possibly prohibitions, on its ability to obtain capital distributions from such subsidiaries. If the Corporation does not receive sufficient cash dividends from its bank subsidiaries, it may not have sufficient funds to pay dividends on its capital stock, service its debt obligations or repurchase its common stock. In addition, the restrictions on payments of discretionary cash bonuses to executive officers may make it more difficult for the Corporation to retain key personnel. As of December 31, 2015 , the Corporation believes its current capital levels would meet the fully-phased in minimum capital requirements, including the new capital conservation buffers, as prescribed in the U.S. Basel III Capital Rules. As of December 31, 2015 and 2014, each of the Corporation’s subsidiary banks were well capitalized under the regulatory framework for prompt corrective action based on their capital ratio calculations. To be categorized as well capitalized, these banks must maintain minimum total risk-based, Tier I risk-based, and Tier I leverage ratios as set forth in the following table. There are no conditions or events since December 31, 2015 that management believes have changed the institutions’ categories. The following table presents the Total risk-based, Tier I risk-based, Common Equity Tier I risk-based and Tier I leverage requirements for the Corporation and its four significant subsidiaries, Fulton Bank, N.A., Fulton Bank of New Jersey, The Columbia Bank and Lafayette Ambassador Bank with total assets in excess of $1 billion , as of December 31, 2015, under the U.S. Basel III Capital Rules: 2015 Actual For Capital Well Capitalized Amount Ratio Amount Ratio Amount Ratio (dollars in thousands) Total Capital (to Risk-Weighted Assets): Corporation $ 1,997,926 13.2 % $ 1,214,868 8.0 % N/A N/A Fulton Bank, N.A. 1,088,709 12.2 714,734 8.0 $ 893,418 10.0 % Fulton Bank of New Jersey 373,465 12.6 236,691 8.0 295,864 10.0 The Columbia Bank 211,355 13.7 123,260 8.0 154,075 10.0 Lafayette Ambassador Bank 172,345 14.1 97,792 8.0 122,240 10.0 Tier I Capital (to Risk-Weighted Assets): Corporation $ 1,544,495 10.2 % $ 911,151 6.0 % N/A N/A Fulton Bank, N.A 1,000,603 11.2 536,051 6.0 $ 714,734 8.0 % Fulton Bank of New Jersey 336,319 11.4 177,518 6.0 236,691 8.0 The Columbia Bank 192,090 12.5 92,445 6.0 123,260 8.0 Lafayette Ambassador Bank 162,092 13.3 73,344 6.0 97,792 8.0 Common Equity Tier I Capital (to Risk-weighted Assets): Corporation $ 1,541,214 10.2 % $ 683,363 4.5 % N/A N/A Fulton Bank, N.A 956,603 10.7 402,038 4.5 $ 580,721 6.5 % Fulton Bank of New Jersey 336,319 11.4 133,139 4.5 192,311 6.5 The Columbia Bank 192,090 12.5 69,334 4.5 100,149 6.5 Lafayette Ambassador Bank 162,092 13.3 55,008 4.5 79,456 6.5 Tier I Capital (to Average Assets): Corporation $ 1,544,495 9.0 % $ 688,500 4.0 % N/A N/A Fulton Bank, N.A 1,000,603 10.2 391,783 4.0 $ 489,729 5.0 % Fulton Bank of New Jersey 336,319 9.5 141,257 4.0 176,572 5.0 The Columbia Bank 192,090 9.7 79,618 4.0 99,523 5.0 Lafayette Ambassador Bank 162,092 11.0 59,152 4.0 73,940 5.0 N/A – Not applicable as "well capitalized" applies to banks only. The following table presents the Total risk-based, Tier I risk-based and Tier I leverage requirements as of December 31, 2014, under the capital standards in existence prior to the U.S. Basel III Capital Rules: 2014 Actual For Capital Well Capitalized Amount Ratio Amount Ratio Amount Ratio (dollars in thousands) Total Capital (to Risk-Weighted Assets): Corporation $ 1,970,569 14.7 % $ 1,076,013 8.0 % N/A N/A Fulton Bank, N.A. 1,065,445 13.2 643,791 8.0 $ 804,739 10.0 % Fulton Bank of New Jersey 347,235 13.1 211,823 8.0 264,779 10.0 The Columbia Bank 203,109 13.5 119,934 8.0 149,917 10.0 Lafayette Ambassador Bank 167,800 15.9 84,407 8.0 105,508 10.0 Tier I Capital (to Risk-Weighted Assets): Corporation $ 1,655,853 12.3 $ 538,007 4.0 % N/A N/A Fulton Bank, N.A 977,547 12.1 321,896 4.0 $ 482,843 6.0 % Fulton Bank of New Jersey 313,843 11.9 105,911 4.0 158,867 6.0 The Columbia Bank 184,331 12.3 59,967 4.0 89,950 6.0 Lafayette Ambassador Bank 154,817 14.7 42,203 4.0 63,305 6.0 Tier I Capital (to Average Assets): Corporation $ 1,655,853 10.0 $ 663,421 4.0 % N/A N/A Fulton Bank, N.A 977,547 10.5 373,288 4.0 $ 466,610 5.0 % Fulton Bank of New Jersey 313,843 9.4 133,580 4.0 166,975 5.0 The Columbia Bank 184,331 9.4 78,186 4.0 97,733 5.0 Lafayette Ambassador Bank 154,817 10.8 57,132 4.0 71,416 5.0 N/A – Not applicable as "well capitalized" applies to banks only. Dividend and Loan Limitations The dividends that may be paid by subsidiary banks to the Parent Company are subject to certain legal and regulatory limitations. Dividend limitations vary, depending on the subsidiary bank’s charter and primary regulator and whether or not it is a member of the Federal Reserve System. Generally, subsidiaries are prohibited from paying dividends when doing so would cause them to fall below the regulatory minimum capital levels. Additionally, limits may exist on paying dividends in excess of net income for specified periods. The total amount available for payment of dividends by subsidiary banks was approximately $236 million as of December 31, 2015 , based on the subsidiary banks maintaining enough capital to be considered well capitalized under the U.S. Basel III Capital Rules. Under current Federal Reserve regulations, the subsidiary banks are limited in the amount they may loan to their affiliates, including the Parent Company. Loans to a single affiliate may not exceed 10% , and the aggregate of loans to all affiliates may not exceed 20% of each bank subsidiary’s regulatory capital. Regulatory Enforcement Orders The Corporation and each of its bank subsidiaries are subject to regulatory enforcement orders issued during 2014 and 2015 by their respective Federal and state bank regulatory agencies relating to identified deficiencies in the Corporation’s centralized Bank Secrecy Act and anti-money laundering compliance program (the BSA/AML Compliance Program), which was designed to comply with the requirements of the Bank Secrecy Act, the USA Patriot Act of 2001 and related anti-money laundering regulations (collectively, the BSA/AML Requirements). The regulatory enforcement orders, which are in the form of consent orders or orders to cease and desist issued upon consent (Consent Orders), generally require, among other things, that the Corporation and its bank subsidiaries undertake a number of required actions to strengthen and enhance the BSA/AML Compliance Program, and, in some cases, conduct retrospective reviews of past account activity and transactions, as well as certain reports filed in accordance with the BSA/AML Requirements, to determine whether suspicious activity and certain transactions in currency were properly identified and reported in accordance with the BSA/AML Requirements. In addition to requiring strengthening and enhancement of the BSA/AML Compliance Program, while the Consent Orders remain in effect, the Corporation is subject to certain restrictions on expansion activities of the Corporation and its bank subsidiaries. Further, any failure to comply with the requirements of any of the Consent Orders involving the Corporation or its bank subsidiaries could result in further enforcement actions, the imposition of material restrictions on the activities of the Corporation or its bank subsidiaries, or the assessment of fines or penalties.

Income Taxes

Income Taxes	12 Months Ended
	Dec. 31, 2015
Income Tax Disclosure [Abstract]
Income Taxes	NOTE 12 – INCOME TAXES The components of the provision for income taxes are as follows: 2015 2014 2013 (in thousands) Current tax expense: Federal $ 34,455 $ 32,957 $ 38,573 State 2,042 1,126 687 36,497 34,083 39,260 Deferred tax expense (benefit): Federal 12,752 18,523 15,357 State 672 — (3,532 ) 13,424 18,523 11,825 Income tax expense $ 49,921 $ 52,606 $ 51,085 The differences between the effective income tax rate and the federal statutory income tax rate are as follows: 2015 2014 2013 Statutory tax rate 35.0 % 35.0 % 35.0 % Tax-exempt income (6.0 ) (5.4 ) (5.2 ) Tax Credit Investments (5.2 ) (4.9 ) (4.9 ) Change in valuation allowance (0.9 ) (0.8 ) (2.0 ) Bank owned life insurance (0.6 ) (0.5 ) (0.5 ) State income taxes, net of federal benefit 1.9 1.2 1.1 Executive compensation 0.1 0.1 0.1 Other, net 0.7 (0.3 ) 0.4 Effective income tax rate 25.0 % 24.4 % 24.0 % The net deferred tax asset recorded by the Corporation is included in other assets and consists of the following tax effects of temporary differences as of December 31 : 2015 2014 (in thousands) Deferred tax assets: Allowance for credit losses $ 62,846 $ 68,407 Postretirement and defined benefit plans 13,070 16,017 Deferred compensation 11,839 12,486 State loss carryforwards 11,170 12,960 Other accrued expenses 7,142 7,335 Other-than-temporary impairment of investments 5,501 8,126 Unrealized holding losses on securities available for sale 3,250 — Other 10,165 8,433 Total gross deferred tax assets 124,983 133,764 Deferred tax liabilities: Direct leasing 20,309 12,399 Mortgage servicing rights 14,582 15,004 Acquisition premiums/discounts 8,897 8,200 Premises and equipment 5,955 7,897 Intangible assets 1,614 1,382 Unrealized holding gains on securities available for sale — 3,949 Other 9,593 7,960 Total gross deferred tax liabilities 60,950 56,791 Net deferred tax asset, before valuation allowance 64,033 76,973 Valuation allowance (8,359 ) (10,187 ) Net deferred tax asset $ 55,674 $ 66,786 In assessing the realizability of deferred tax assets, management considers whether it is more likely than not that some or all of the deferred tax assets will not be realized. The ultimate realization of deferred tax assets is dependent upon the generation of future taxable income and/or capital gain income during periods in which those temporary differences become deductible. Management considers the scheduled reversal of deferred tax liabilities, projected future taxable income and tax planning strategies, such as those that may be implemented to generate capital gains, in making this assessment. The valuation allowance relates to state deferred tax assets and net operating loss carryforwards for which realizability is uncertain. As of December 31, 2015 and 2014 , the Corporation had state net operating loss carryforwards of approximately $424 million and $451 million , respectively, which are available to offset future state taxable income, and expire at various dates through 2035 . The Corporation has $5.3 million of deferred tax assets resulting from unrealized other-than-temporary impairment losses on investment securities, which would be characterized as capital losses for tax purposes. If realized, the income tax benefits of these potential capital losses can only be recognized for tax purposes to the extent of capital gains generated during carryback and carryforward periods. Other deferred tax assets include $3.4 million related to realized capital losses on sales of investment securities that have not been deducted on tax returns as there were no capital gains available for offset in the current or carryback periods. These losses will begin to expire in 2016. If sufficient capital gains are not realized during this period, some or all of this deferred tax asset may need to be written off through a charge to income tax expense. The Corporation has the ability to generate sufficient offsetting capital gains in future periods through the execution of certain tax planning strategies, which may include the sale and leaseback of some or all of its branch and office properties. As such, no valuation allowance for the deferred tax assets related to the realized or unrealized capital losses is considered to be necessary as of December 31, 2015 . Based on the level of historical taxable income and projections for future taxable income over the periods in which the deferred tax assets are deductible, management believes it is more likely than not that the Corporation will realize the benefits of its deferred tax assets, net of the valuation allowance, as of December 31, 2015 . Uncertain Tax Positions The following summarizes the changes in unrecognized tax benefits for the years ended December 31 : 2015 2014 2013 (in thousands) Balance at beginning of year $ 1,944 $ 1,651 $ 1,453 Prior period tax positions — 188 — Current period tax positions 492 269 318 Lapse of statute of limitations (63 ) (164 ) (120 ) Balance at end of year $ 2,373 $ 1,944 $ 1,651 Virtually all of the Corporation’s unrecognized tax benefits are for positions that are taken on an annual basis on state tax returns. Increases to unrecognized tax benefits will generally occur as a result of accruing for the nonrecognition of the position for the current year. Decreases will occur as a result of the lapsing of the statute of limitations for the oldest outstanding year which includes the position. These offsetting increases and decreases are likely to continue in the future, including over the next twelve months. While the net effect on future total unrecognized tax benefits cannot be reasonably estimated, approximately $391,000 is expected to reverse in 2016 due to lapsing of the statute of limitations. Decreases can also occur through the settlement of positions with taxing authorities. The $188,000 increase for prior period tax positions in 2014 resulted from changes in state case law, which impacted the estimated amount of positions taken in prior years that will ultimately be recognized. As of December 31, 2015, if recognized, all of the Corporation’s unrecognized tax benefits would impact the effective tax rate. Not included in the table above is $806,000 of federal income tax expense on unrecognized state tax benefits which, if recognized, would also impact the effective tax rate. Interest accrued related to unrecognized tax benefits is recorded as a component of income tax expense. Penalties, if incurred, would also be recognized in income tax expense. The Corporation recognized approximately $46,000 of interest and penalty expense, net of reversals, in income tax expense related to unrecognized tax positions in 2015. As of December 31, 2015 and 2014, total accrued interest and penalties related to unrecognized tax positions were approximately $531,000 and $485,000 , respectively. The Corporation and its subsidiaries file income tax returns in the federal and various state jurisdictions. In most cases, unrecognized tax benefits are related to tax years that remain subject to examination by the relevant taxing authorities. With few exceptions, the Corporation is no longer subject to federal, state and local examinations by tax authorities for years before 2012 .

Employee Benefit Plans

Employee Benefit Plans	12 Months Ended
	Dec. 31, 2015
Compensation and Retirement Disclosure [Abstract]
Employee Benefit Plans	NOTE 13 – EMPLOYEE BENEFIT PLANS The following summarizes the Corporation’s expense under its retirement plans for the years ended December 31 : 2015 2014 2013 (in thousands) 401(k) Retirement Plan $ 6,423 $ 8,643 $ 11,807 Pension Plan 4,102 1,514 2,477 $ 10,525 $ 10,157 $ 14,284 The 401(k) Retirement Plan is a defined contribution plan under which eligible employees may defer a portion of their pre-tax covered compensation on an annual basis, with employer matches of up to 5% of employee compensation. Employee and employer contributions under these features are 100% vested. Prior to January 1, 2015, this plan also included a profit sharing component whereby additional employer contributions not to exceed 5% of each eligible employee’s covered compensation, were provided for certain employees. Contributions to the Defined Benefit Pension Plan (Pension Plan) are actuarially determined and funded annually, if necessary. The Corporation recognizes the funded status of its Pension Plan on the consolidated balance sheets and recognizes the changes in that funded status through other comprehensive income. The Pension Plan has been curtailed, with no additional benefits accruing to participants. Pension Plan The net periodic pension cost for the Pension Plan, as determined by consulting actuaries, consisted of the following components for the years ended December 31 : 2015 2014 2013 (in thousands) Service cost (1) $ 579 $ 367 $ 202 Interest cost 3,405 3,413 3,087 Expected return on assets (3,009 ) (3,240 ) (3,194 ) Net amortization and deferral 3,127 974 2,382 Net periodic pension cost $ 4,102 $ 1,514 $ 2,477 (1) The Pension Plan was curtailed effective January 1, 2008. Pension plan service cost for all years presented was related to administrative costs associated with the plan and not due to the accrual of additional participant benefits. The following table summarizes the changes in the projected benefit obligation and fair value of plan assets for the plan years ended December 31 : 2015 2014 (in thousands) Projected benefit obligation at beginning of year $ 93,079 $ 73,362 Service cost 579 367 Interest cost 3,405 3,413 Benefit payments (3,904 ) (5,164 ) Change due to change in assumptions (7,722 ) 22,055 Experience gain (701 ) (954 ) Projected benefit obligation at end of year $ 84,736 $ 93,079 Fair value of plan assets at beginning of year $ 51,730 $ 55,448 Actual return on assets (855 ) 1,446 Benefit payments (3,904 ) (5,164 ) Fair value of plan assets at end of year $ 46,971 $ 51,730 The following table presents the funded status of the Pension Plan, included in other liabilities on the consolidated balance sheets, as of December 31 : 2015 2014 (in thousands) Projected benefit obligation $ (84,736 ) $ (93,079 ) Fair value of plan assets 46,971 51,730 Funded status $ (37,765 ) $ (41,349 ) The following table summarizes the changes in the unrecognized net loss included as a component of accumulated other comprehensive loss: Unrecognized Net Loss Gross of tax Net of tax (in thousands) Balance as of December 31, 2013 $ 16,161 $ 10,505 Recognized as a component of 2014 periodic pension cost (974 ) (633 ) Unrecognized losses arising in 2014 22,895 14,882 Balance as of December 31, 2014 38,082 24,754 Recognized as a component of 2015 periodic pension cost (3,127 ) (2,033 ) Unrecognized gains arising in 2015 (4,559 ) (2,963 ) Balance as of December 31, 2015 $ 30,396 $ 19,758 The total amount of unrecognized net loss that will be amortized as a component of net periodic pension cost in 2016 is expected to be $2.4 million . The following rates were used to calculate net periodic pension cost and the present value of benefit obligations as of December 31 : 2015 2014 2013 Discount rate-projected benefit obligation 4.25 % 3.75 % 4.75 % Expected long-term rate of return on plan assets 6.00 % 6.00 % 6.00 % As of December 31, 2015 and 2014 , the discount rate used was determined using the Citigroup Average Life discount rate table, as adjusted based on the Pension Plan's expected benefit payments and rounded to the nearest 0.25% . The 6.00% long-term rate of return on plan assets used to calculate the net periodic pension cost was based on historical returns, adjusted for expectations of long-term asset returns based on the December 31, 2015 weighted average asset allocations. The expected long-term return is considered to be appropriate based on the asset mix and the historical returns realized. The following table presents a summary of the fair values of the Pension Plan’s assets as of December 31 : 2015 2014 Estimated % of Total Estimated % of Total (dollars in thousands) Equity mutual funds $ 8,269 $ 8,503 Equity common trust funds 6,350 6,018 Equity securities 14,619 31.1 % 14,521 28.1 % Cash and money market funds 8,196 8,957 Fixed income mutual funds 9,578 9,845 Corporate debt securities 3,749 4,971 U.S. Government agency securities 2,881 3,856 Fixed income securities and cash 24,404 52.0 % 27,629 53.4 % Other alternative investment funds 7,948 16.9 % 9,580 18.5 % $ 46,971 100.0 % $ 51,730 100.0 % Investment allocation decisions are made by a retirement plan committee. The goal of the investment allocation strategy is to match certain benefit obligations with maturities of fixed income securities. Pension Plan assets are invested with a conservative growth objective, with target asset allocations of approximately 25% in equities, 55% in fixed income securities and cash and 20% in alternative investments. Alternative investments may include managed futures, commodities, real estate investment trusts, master limited partnerships, and long-short strategies with traditional stocks and bonds. All alternative investments are in the form of mutual funds, not individual contracts, to enable daily liquidity. The fair values for all assets held by the Pension Plan, excluding equity common trust funds, are based on quoted prices for identical instruments and would be categorized as Level 1 assets under FASB ASC Topic 810. Equity common trust funds would be categorized as Level 2 assets under FASB ASC Topic 810. Estimated future benefit payments are as follows (in thousands): Year 2016 $ 3,125 2017 3,367 2018 3,727 2019 3,838 2020 4,227 2021 – 2025 23,903 $ 42,187 Postretirement Benefits The Corporation provides medical benefits and life insurance benefits under a postretirement benefits plan (Postretirement Plan) to certain retired full-time employees who were employees of the Corporation prior to January 1, 1998 . Prior to February 1, 2014, certain full-time employees became eligible for these discretionary benefits if they reached retirement age while working for the Corporation. The Corporation recognizes the funded status of the postretirement plan on the consolidated balance sheets and recognizes the changes in that funded status through other comprehensive income. Effective February 1, 2014, the Corporation amended the Postretirement Plan, making all active full-time employees ineligible for benefits under this plan. As a result of this amendment, the Corporation recorded a $1.5 million curtailment gain as a reduction to salaries and employee benefits expense in 2014. The curtailment gain resulted from the recognition of the remaining pre-curtailment prior service cost as of December 31, 2013. In addition, this amendment resulted in a $3.4 million decrease in the accumulated postretirement benefit obligation and a corresponding increase in unrecognized prior service cost credits. In 2015, the Corporation amended the postretirement plan to eliminate a death benefit provision and to fix the cost of health insurance premiums paid for by each participant. This amendment resulted in a $2.5 million decrease in the postretirement benefit obligation that will be amortized to income over the estimated average remaining life of plan participants, or approximately 14 years. The components of the expense for postretirement benefits other than pensions are as follows: 2015 2014 2013 (in thousands) Service cost $ — $ 15 $ 228 Interest cost 206 206 322 Expected return on plan assets — — (1 ) Net amortization and deferral (258 ) (347 ) (363 ) Net postretirement benefit cost $ (52 ) $ (126 ) $ 186 The following table summarizes the changes in the accumulated postretirement benefit obligation and fair value of plan assets for the years ended December 31 : 2015 2014 (in thousands) Accumulated postretirement benefit obligation at beginning of year $ 5,552 $ 8,169 Service cost — 15 Interest cost 206 206 Benefit payments (251 ) (209 ) Experience gain 189 (532 ) Change due to change in assumptions (2,821 ) 1,261 Effect of curtailment — (3,358 ) Accumulated postretirement benefit obligation at end of year $ 2,875 $ 5,552 Fair value of plan assets at beginning of year $ 8 $ 23 Employer contributions 258 194 Benefit payments (251 ) (209 ) Fair value of plan assets at end of year $ 15 $ 8 The following table presents the funded status of the Postretirement Plan, included in other liabilities on the consolidated balance sheets as of December 31 : 2015 2014 (in thousands) Accumulated postretirement benefit obligation $ (2,875 ) $ (5,552 ) Fair value of plan assets 15 8 Funded status $ (2,860 ) $ (5,544 ) The following table summarizes the changes in items recognized as a component of accumulated other comprehensive loss: Gross of tax Unrecognized Unrecognized Total Net of tax (in thousands) Balance as of December 31, 2013 $ (1,484 ) $ (1,137 ) $ (2,621 ) $ (1,704 ) Recognized as a component of 2014 postretirement benefit cost, prior to curtailment 32 10 42 26 Unrecognized gains arising in 2014, prior to curtailment — (313 ) (313 ) (203 ) Curtailment gain 1,452 — 1,452 944 Recognized as a component of 2014 postretirement benefit cost, after curtailment 235 70 305 199 Unrecognized gains arising in 2014, after curtailment (3,358 ) 1,034 (2,324 ) (1,511 ) Balance as of December 31, 2014 (3,123 ) (336 ) (3,459 ) (2,249 ) Recognized as a component of 2015 postretirement benefit cost 258 — 258 168 Unrecognized gains arising in 2015 (2,469 ) (172 ) (2,641 ) (1,717 ) Balance as of December 31, 2015 $ (5,334 ) $ (508 ) $ (5,842 ) $ (3,798 ) For measuring the postretirement benefit obligation, the annual increase in the per capita cost of health care benefits was assumed to be 6.5% in year one, declining to an ultimate rate of 6.0% by year two. Assuming a 1.0% increase in the health care cost trend rate above the assumed annual increase, the accumulated postretirement benefit obligation would increase by approximately $385,000 and the current period expense would increase by approximately $15,000 . Conversely, a 1.0% decrease in the health care cost trend rate would decrease the accumulated postretirement benefit obligation by approximately $340,000 and the current period expense by approximately $15,000 . The following rates were used to calculate net periodic postretirement benefit cost and the present value of benefit obligations as of December 31 : 2015 2014 2013 Discount rate-projected benefit obligation 4.25 % 3.75 % 4.75 % Expected long-term rate of return on plan assets 3.00 % 3.00 % 3.00 % As of December 31, 2015 and 2014 , the discount rate used to calculate the accumulated postretirement benefit obligation was determined using the Citigroup Average Life discount rate table, as adjusted based on the Postretirement Plan's expected benefit payments and rounded to the nearest 0.25% . Estimated future benefit payments under the Postretirement Plan are as follows (in thousands): Year 2016 $ 342 2017 317 2018 296 2019 275 2020 255 2021 – 2025 995 $ 2,480

Shareholders' Equity

Shareholders' Equity	12 Months Ended
	Dec. 31, 2015
Accumulated Other Comprehensive Income [Abstract]
Stockholders' Equity	NOTE 14 – SHAREHOLDERS’ EQUITY Accumulated Other Comprehensive Income (Loss) The following table presents the components of other comprehensive income (loss) for the years ended December 31 : Before-Tax Amount Tax Effect Net of Tax Amount (in thousands) 2015: Unrealized loss on securities $ (11,872 ) $ 4,155 $ (7,717 ) Reclassification adjustment for securities gains included in net income (1) (9,066 ) 3,174 (5,892 ) Reclassification adjustment for loss on derivative financial instruments included in net income (2) 3,778 (1,322 ) 2,456 Non-credit related unrealized gains on other-than-temporarily impaired debt securities 368 (129 ) 239 Unrealized gain on derivative financial instruments 115 (40 ) 75 Unrecognized pension and postretirement cost 7,200 (2,520 ) 4,680 Amortization of net unrecognized pension and postretirement income (3) 2,869 (1,005 ) 1,864 Total Other Comprehensive Loss $ (6,608 ) $ 2,313 $ (4,295 ) 2014: Unrealized gain on securities $ 51,901 $ (18,167 ) $ 33,734 Reclassification adjustment for securities gains included in net income (1) (2,041 ) 714 (1,327 ) Non-credit related unrealized gains on other-than-temporarily impaired debt securities 1,200 (420 ) 780 Unrealized gain on derivative financial instruments 209 (73 ) 136 Reclass adjustment for postretirement plan gain included in net income (3) (1,452 ) 508 (944 ) Unrecognized pension and postretirement income (20,258 ) 7,090 (13,168 ) Amortization of net unrecognized pension and postretirement income (3) 627 (219 ) 408 Total Other Comprehensive Income $ 30,186 $ (10,567 ) $ 19,619 2013: Unrealized loss on securities $ (76,319 ) $ 26,712 $ (49,607 ) Reclassification adjustment for securities gains included in net income (1) (8,004 ) 2,801 (5,203 ) Non-credit related unrealized gains on other-than-temporarily impaired debt securities 3,042 (1,065 ) 1,977 Unrealized gain on derivative financial instruments 209 (73 ) 136 Unrecognized pension and postretirement cost 12,875 (4,506 ) 8,369 Amortization of net unrecognized pension and postretirement income (3) $ 2,019 $ (707 ) $ 1,312 Total Other Comprehensive Loss $ (66,178 ) $ 23,162 $ (43,016 ) (1) Amounts reclassified out of accumulated other comprehensive loss. Before-tax amounts included in "Investment securities gains, net" on the consolidated statements of income. See "Note 3 - Investment Securities," for additional details. (2) Amount reclassified out of accumulated other comprehensive loss. Before-tax amount included in "Loss on redemption of trust preferred securities" on the consolidated statements of income. See "Note 9 - Short-Term Borrowings and Long-Term Debt," for additional details. (3) Amounts reclassified out of accumulated other comprehensive loss. Before-tax amounts included in "Salaries and employee benefits" on the consolidated statements of income. See "Note 13 - Employee Benefit Plans," for additional details. The following table presents changes in each component of accumulated other comprehensive income (loss), net of tax, for the years ended December 31 : Unrealized Gain (Losses) on Investment Securities Not Other-Than-Temporarily Impaired Unrealized Non-Credit Gains (Losses) on Other-Than-Temporarily Impaired Debt Securities Unrecognized Pension and Postretirement Plan Income (Cost) Unrealized Effective Portions of Losses on Forward-Starting Interest Rate Swaps Total (in thousands) Balance as of December 31, 2012 $ 26,362 $ 613 $ (18,482 ) $ (2,818 ) $ 5,675 Other comprehensive income (loss) before reclassifications (49,607 ) 1,977 8,369 — (39,261 ) Amounts reclassified from accumulated other comprehensive income (loss) (4,265 ) (938 ) 1,312 136 (3,755 ) Balance as of December 31, 2013 (27,510 ) 1,652 (8,801 ) (2,682 ) (37,341 ) Other comprehensive income (loss) before reclassifications 33,734 780 (14,112 ) — 20,402 Amounts reclassified from accumulated other comprehensive income (loss) (244 ) (1,083 ) 408 136 (783 ) Balance as of December 31, 2014 5,980 1,349 (22,505 ) (2,546 ) (17,722 ) Other comprehensive income (loss) before reclassifications (7,717 ) 239 4,680 — (2,798 ) Amounts reclassified from accumulated other comprehensive income (loss) (4,762 ) (1,130 ) 1,864 75 (3,953 ) Reclassification adjustment for loss on derivative financial instruments — — — 2,456 2,456 Balance as of December 31, 2015 $ (6,499 ) $ 458 $ (15,961 ) $ (15 ) $ (22,017 ) Common Stock Repurchase Plans In 2013 and 2014, the Corporation repurchased outstanding shares of its common stock under various repurchase programs approved by its board of directors. In 2013, 8.0 million shares were repurchased for $90.9 million or an average cost of $11.37 per share. In 2014, 8.0 million shares were repurchased for $95.2 million , or an average cost of $11.91 per share. In addition to the repurchases discussed above, in November 2014 , the Corporation entered into an accelerated share repurchase agreement (ASR) with a third party to repurchase $100 million of shares of its common stock. Under the terms of the ASR, the Corporation paid $100 million to the third party in November 2014 and received an initial delivery of 6.5 million shares, representing 80% of the shares expected to be delivered under the ASR, based on the closing price for the Corporation’s shares on November 13, 2014 . In April 2015, the third party delivered an additional 1.8 million shares of common stock pursuant to the terms of the ASR, thereby completing the $100.0 million ASR. The Corporation repurchased a total of 8.3 million shares of common stock under the ASR at an average price of $12.05 per share. In April 2015 , the Corporation announced that its board of directors had approved a share repurchase program pursuant to which the Corporation was authorized to repurchase up to $50.0 million of its outstanding shares of common stock, or approximately 2.3% of its outstanding shares, through December 31, 2015 . During 2015, the Corporation repurchased approximately 4.0 million shares under this program for a total cost of $50.0 million , or $12.57 per share, completing this program. In October 2015 , the Corporation announced that its board of directors had approved a share repurchase program pursuant to which the Corporation is authorized to repurchase up to $50.0 million of its outstanding shares of common stock, or approximately 2.3% of its outstanding shares, through December 31, 2016 . Repurchased shares will be added to treasury stock, at cost. As permitted by securities laws and other legal requirements and subject to market conditions and other factors, purchases may be made from time to time in open market or privately negotiated transactions, including, without limitation, through accelerated share repurchase transactions. The share repurchase program may be discontinued at any time. No shares were repurchased under this program as of December 31, 2015.

Stock-Based Compensation Plans

Stock-Based Compensation Plans	12 Months Ended
	Dec. 31, 2015
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Stock-based compensation plans	NOTE 15 – STOCK-BASED COMPENSATION PLANS The following table presents compensation expense and related tax benefits for all equity awards recognized in the consolidated statements of income: 2015 2014 2013 (in thousands) Compensation expense $ 5,938 $ 5,865 $ 5,330 Tax benefit (2,011 ) (1,608 ) (1,475 ) Stock-based compensation, net of tax $ 3,927 $ 4,257 $ 3,855 The tax benefit shown in the preceding table is less than the benefit that would be calculated using the Corporation’s 35% statutory federal tax rate. Tax benefits are only recognized over the vesting period for awards that ordinarily will generate a tax deduction when exercised, in the case of non-qualified stock options, or upon vesting, in the case of restricted stock. No non-qualified stock options were granted in 2015 and 2014 and 50,000 non-qualified stock options were granted in 2013 . The following table presents compensation expense and related tax benefits for restricted stock awards, RSUs and PSUs recognized in the consolidated statements of income, and included as a component of total stock-based compensation in the preceding table: 2015 2014 2013 (in thousands) Compensation expense $ 4,646 $ 4,345 $ 3,705 Tax benefit (1,626 ) (1,510 ) (1,297 ) Restricted stock compensation, net of tax $ 3,020 $ 2,835 $ 2,408 The following table provides information about stock option activity for the year ended December 31, 2015 : Stock Weighted Weighted Aggregate Outstanding as of December 31, 2014 4,302,464 $ 12.89 Exercised (490,151 ) 10.21 Forfeited (83,878 ) 14.09 Expired (748,348 ) 16.80 Outstanding as of December 31, 2015 2,980,087 $ 12.31 4.1 years $ 4.6 Exercisable as of December 31, 2015 2,630,235 $ 12.34 3.6 years $ 4.3 The following table provides information about nonvested stock options, restricted stock, RSUs and PSUs granted under the Employee Equity Plan and Directors' Plan for the year ended December 31, 2015 : Nonvested Stock Options Restricted Stock/RSUs/PSUs Options Weighted Shares Weighted Nonvested as of December 31, 2014 755,964 $ 2.68 1,063,087 $ 11.83 Granted — — 581,719 12.04 Vested (393,862 ) 2.56 (250,807 ) 10.48 Forfeited (12,250 ) 2.77 (5,610 ) 12.05 Nonvested as of December 31, 2015 349,852 $ 2.82 1,388,389 $ 12.16 As of December 31, 2015 , there was $7.8 million of total unrecognized compensation cost related to nonvested stock options, restricted stock, RSUs and PSUs that will be recognized as compensation expense over a weighted average period of two years. As of December 31, 2015 , the Employee Equity Plan had 11.5 million shares reserved for future grants through 2023 , and the Directors’ Plan had 396,000 shares reserved for future grants through 2021 . The following table presents information about stock options exercised: 2015 2014 2013 (dollars in thousands) Number of options exercised 490,151 215,047 451,102 Total intrinsic value of options exercised $ 1,442 $ 568 $ 1,612 Cash received from options exercised $ 4,936 $ 2,068 $ 3,650 Tax deduction realized from options exercised $ 1,389 $ 530 $ 1,416 Upon exercise, the Corporation issues shares from its authorized, but unissued, common stock to satisfy the options. The fair value of stock option awards under the Employee Equity Plan was estimated on the grant date using the Black-Scholes valuation methodology, which is dependent upon certain assumptions, as summarized in the table below. No options were granted in 2015 under the Employee Equity Plan. 2014 2013 Risk-free interest rate 2.44 % 1.27 % Volatility of Corporation’s stock 28.05 % 27.64 % Expected dividend yield 2.36 % 2.48 % Expected life of options 7 Years 7 Years The expected life of the options was estimated based on historical activity. Volatility of the Corporation’s stock was based on historical volatility for the period commensurate with the expected life of the options. The risk-free interest rate is the zero-coupon U.S. Treasury rate commensurate with the expected life of the options on the date of the grant. Based on the assumptions above, the Corporation calculated an estimated fair value per option of $3.14 and $2.49 for options granted in 2014 and 2013 , respectively. The Corporation granted 288,626 options in 2014 and 617,869 options in 2013 . The fair value of certain PSUs with market-based performance conditions granted in 2015 under the Employee Equity Plan was estimated on the grant date using the Monte Carlo valuation methodology performed by a third-party valuation expert. This valuation is dependent upon certain assumptions, as summarized in the following table: Risk-free interest rate 0.86 % Volatility of Corporation’s stock 20.08 % Expected life of PSUs 3 Years The expected life of the PSUs with fair values measured using the Monte Carlo valuation methodology was based on the defined performance period of three years. Volatility of the Corporation’s stock was based on historical volatility for the period commensurate with the expected life of the PSUs. The risk-free interest rate is the zero-coupon U.S. Treasury rate commensurate with the expected life of the PSUs on the date of the grant. Based on the assumptions above, the Corporation calculated an estimated fair value per PSU granted in 2015 of $10.66 . Under the ESPP, eligible employees can purchase stock of the Corporation at 85% of the fair market value of the stock on the date of purchase. The ESPP is considered to be a compensatory plan and, as such, compensation expense is recognized for the 15% discount on shares purchased. The following table summarizes activity under the ESPP: 2015 2014 2013 ESPP shares purchased 121,890 132,640 141,608 Average purchase price per share (85% of market value) $ 10.86 $ 10.31 $ 10.02 Compensation expense recognized (in thousands) $ 234 $ 241 $ 251

Leases

Leases	12 Months Ended
	Dec. 31, 2015
Leases [Abstract]
Leases	NOTE 16 – LEASES Certain branch offices and equipment are leased under agreements that expire at varying dates through 2035 . Most leases contain renewal provisions at the Corporation’s option. Total rental expense was approximately $18.1 million in 2015 , $18.1 million in 2014 and $19.0 million in 2013 . Future minimum payments as of December 31, 2015 under non-cancelable operating leases with initial terms exceeding one year are as follows (in thousands): Year 2016 $ 16,325 2017 15,487 2018 13,046 2019 10,995 2020 9,836 Thereafter 46,819 $ 112,508

Commitments and Contingencies

Commitments and Contingencies	12 Months Ended
	Dec. 31, 2015
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies	NOTE 17 – COMMITMENTS AND CONTINGENCIES Commitments The Corporation is a party to financial instruments with off-balance sheet risk in the normal course of business to meet the financing needs of its customers. Commitments to extend credit are agreements to lend to a customer as long as there is no violation of any condition established in the contract. Commitments generally have fixed expiration dates or other termination clauses and may require payment of a fee. Since a portion of the commitments is expected to expire without being drawn upon, the total commitment amounts do not necessarily represent future cash requirements. The Corporation evaluates each customer’s creditworthiness on a case-by-case basis. The amount of collateral, if any, obtained upon extension of credit is based on management’s credit evaluation of the customer. Collateral held varies but may include accounts receivable, inventory, property, equipment and income producing commercial properties. The Corporation records a reserve for unfunded commitments, included in other liabilities on the consolidated balance sheets, which represents management’s estimate of losses inherent in these commitments. See "Note 4 - Loans and Allowance for Credit Losses," for additional information. Standby letters of credit are conditional commitments issued to guarantee the financial or performance obligation of a customer to a third party. Commercial letters of credit are conditional commitments issued to facilitate foreign and domestic trade transactions for customers. The credit risk involved in issuing letters of credit is similar to that involved in extending loan facilities. These obligations are underwritten consistently with commercial lending standards. The maximum exposure to loss for standby and commercial letters of credit is equal to the contractual (or notional) amount of the instruments. The following table presents commitments to extend credit and letters of credit: 2015 2014 (in thousands) Commercial and other $ 3,518,960 $ 2,972,105 Home equity 1,300,062 1,291,596 Commercial mortgage and construction 965,116 558,662 Total commitments to extend credit $ 5,784,138 $ 4,822,363 Standby letters of credit $ 374,729 $ 382,465 Commercial letters of credit 39,529 32,304 Total letters of credit $ 414,258 $ 414,769 During 2015, the Corporation began disclosing available overdraft protection limits to its depositors that are enrolled in overdraft protection. The aggregate of these limits totaled approximately $330.6 million as of December 31, 2015 and are included in the $5.8 billion of commitments to extend credit as of December 31, 2015. During 2015, the Corporation revised the comparative December 31, 2014 disclosure for commitments to extend credit as follows: commercial and other from $2.7 billion to $3.0 billion , commercial mortgage and construction from $351.4 million to $558.7 million and total commitments to extend credit from $4.4 billion to $4.8 billion . The Corporation assessed the materiality of these corrections of an error and concluded, based on qualitative and quantitative considerations, that the adjustments are not material to the financial statements as a whole. Residential Lending Residential mortgages are originated and sold by the Corporation and consist primarily of conforming, prime loans sold to government sponsored agencies such as the Federal National Mortgage Association (Fannie Mae) and the Federal Home Loan Mortgage Corporation (Freddie Mac). The Corporation also sells certain residential mortgages to non-government sponsored agency investors. The Corporation provides customary representations and warranties to government sponsored agencies and investors that specify, among other things, that the loans have been underwritten to the standards established by the government sponsored agency or investor. The Corporation may be required to repurchase a loan or reimburse the government sponsored agency or investor for a credit loss incurred on a loan, if it is determined that the representations and warranties have not been met. Such repurchases or reimbursements generally result from an underwriting or documentation deficiency. As of December 31, 2015 and 2014 , total outstanding repurchase requests totaled approximately $543,000 . From 2000 to 2011 , the Corporation sold loans to the Federal Home Loan Bank of Pittsburgh under its Mortgage Partnership Finance Program (MPF Program). No loans were sold under this program in 2015 , 2014 or 2013. The Corporation provided a "credit enhancement" for residential mortgage loans sold under the MPF Program whereby it would assume credit losses in excess of a defined "First Loss Account," or "FLA" balance, up to specified amounts. The FLA is funded by the Federal Home Loan Bank of Pittsburgh based on a percentage of the outstanding principal balance of loans sold. As of December 31, 2015 , the unpaid principal balance of loans sold under the MPF Program was approximately $126 million . As of December 31, 2015 and 2014, the reserves for estimated credit losses related to loans sold under the MPF Program were $1.8 million and $2.3 million , respectively. Required reserves are calculated based on delinquency status and estimated loss rates established through the Corporation's existing allowance for credit loss methodology for residential mortgage loans. As of December 31, 2015 and 2014 , the reserve for losses on residential mortgage loans sold was $2.6 million and $3.2 million , respectively, including both reserves for credit losses under the MPF Program and reserves for representation and warranty exposures. Management believes that the reserves recorded as of December 31, 2015 are adequate. However, declines in collateral values, the identification of additional loans to be repurchased, or a deterioration in the credit quality of loans sold under the MPF Program could necessitate additional reserves, established through charges to earnings, in the future. Other Contingencies The Corporation and its subsidiaries are involved in various legal proceedings in the ordinary course of business. The Corporation periodically evaluates the possible impact of pending litigation matters based on, among other factors, the advice of counsel, available insurance coverage and recorded liabilities and reserves for probable legal liabilities and costs. In addition, from time to time, the Corporation is the subject of investigations or other forms of regulatory or governmental inquiry covering a range of possible issues and, in some cases, these may be part of similar reviews of the specified activities of other industry participants. These inquiries could lead to administrative, civil or criminal proceedings, and could possibly result in fines, penalties, restitution or the need to alter the Corporation’s business practices, and cause the Corporation to incur additional costs. The Corporation’s practice is to cooperate fully with regulatory and governmental investigations. During the second quarter of 2015, Fulton Bank, N.A. (the Bank), the Corporation’s largest bank subsidiary, received a letter from the U.S. Department of Justice (the Department) indicating that the Department had initiated an investigation regarding potential violations of fair lending laws by the Bank in certain of its geographies. The Bank is cooperating with the Department and responding to the Department’s requests for information. Although the Corporation is not able to predict the outcome of the Department’s investigation, it could result in legal proceedings the resolution of which could potentially involve a settlement, fines or other remedial actions. As of the date of this report, the Corporation believes that any liabilities, individually or in the aggregate, which may result from the final outcomes of pending proceedings will not have a material adverse effect on the financial position of the Corporation. However, legal proceedings are often unpredictable, and it is possible that the ultimate resolution of any such matters, if unfavorable, may be material to the Corporation's results of operations for any particular period, depending, in part, upon the size of the loss or liability imposed and the operating results for the applicable period. See also, "Note 11 - Regulatory Matters," under the sub-heading "Regulatory Enforcement Orders."

Fair Value Measurements

Fair Value Measurements	12 Months Ended
	Dec. 31, 2015
Fair Value Disclosures [Abstract]
Fair Value Measurements	NOTE 18 – FAIR VALUE MEASUREMENTS All assets and liabilities measured at fair value on both a recurring and nonrecurring basis have been categorized based on the method of their fair value determination. The following tables summarizes the Corporation’s assets and liabilities measured at fair value on a recurring basis and reported on the consolidated balance sheets as of December 31: 2015 Level 1 Level 2 Level 3 Total (in thousands) Mortgage loans held for sale $ — $ 16,886 $ — $ 16,886 Available for sale investment securities: Equity securities 21,514 — — 21,514 U.S. Government sponsored agency securities — 25,136 — 25,136 State and municipal securities — 262,765 — 262,765 Corporate debt securities — 93,619 3,336 96,955 Collateralized mortgage obligations — 821,509 — 821,509 Mortgage-backed securities — 1,158,835 — 1,158,835 Auction rate securities — — 98,059 98,059 Total available for sale investment securities 21,514 2,361,864 101,395 2,484,773 Other assets 16,129 34,465 — 50,594 Total assets $ 37,643 $ 2,413,215 $ 101,395 $ 2,552,253 Other liabilities $ 15,914 $ 33,010 $ — $ 48,924 2014 Level 1 Level 2 Level 3 Total (in thousands) Mortgage loans held for sale $ — $ 17,522 $ — $ 17,522 Available for sale investment securities: Equity securities 47,623 — — 47,623 U.S. Government securities — 200 — 200 U.S. Government sponsored agency securities — 214 — 214 State and municipal securities — 245,215 — 245,215 Corporate debt securities — 90,126 7,908 98,034 Collateralized mortgage obligations — 902,313 — 902,313 Mortgage-backed securities — 928,831 — 928,831 Auction rate securities — — 100,941 100,941 Total available for sale investment securities 47,623 2,166,899 108,849 2,323,371 Other assets 17,682 21,305 — 38,987 Total assets $ 65,305 $ 2,205,726 $ 108,849 $ 2,379,880 Other liabilities $ 17,737 $ 21,084 $ — $ 38,821 The valuation techniques used to measure fair value for the items in the table above are as follows: • Mortgage loans held for sale – This category consists of mortgage loans held for sale that the Corporation has elected to measure at fair value. Fair values as of December 31, 2015 and December 31, 2014 were measured as the price that secondary market investors were offering for loans with similar characteristics. See "Note 1 - Summary of Significant Accounting Policies" for details related to the Corporation’s election to measure assets and liabilities at fair value. • Available for sale investment securities – Included within this asset category are both equity and debt securities. Level 2 available for sale debt securities are valued by a third-party pricing service commonly used in the banking industry. The pricing service uses pricing models that vary based on asset class and incorporate available market information, including quoted prices of investment securities with similar characteristics. Because many fixed income securities do not trade on a daily basis, pricing models use available information, as applicable, through processes such as benchmark yield curves, benchmarking of like securities, sector groupings, and matrix pricing. Standard market inputs include: benchmark yields, reported trades, broker/dealer quotes, issuer spreads, two-sided markets, benchmark securities, bids, offers and reference data, including market research publications. For certain security types, additional inputs may be used, or some of the standard market inputs may not be applicable. Management tests the values provided by the pricing service by obtaining securities prices from an alternative third-party source and comparing the results. This test is done for approximately 80% of the securities valued by the pricing service. Generally, differences by security in excess of 5% are researched to reconcile the difference. • Equity securities – Equity securities consist of stocks of financial institutions ( $20.6 million at December 31, 2015 and $41.8 million at December 31, 2014 ) and other equity investments ( $914,000 at December 31, 2015 and $5.8 million at December 31, 2014 ). These Level 1 investments are measured at fair value based on quoted prices for identical securities in active markets. • U.S. Government securities/U.S. Government sponsored agency securities/State and municipal securities/Collateralized mortgage obligations/Mortgage-backed securities – These debt securities are classified as Level 2 investments. Fair values are determined by a third-party pricing service, as detailed above. • Corporate debt securities – This category consists of subordinated debt issued by financial institutions ( $53.1 million at December 31, 2015 and $50.0 million at December 31, 2014 ), single-issuer trust preferred securities issued by financial institutions ( $39.1 million at December 31, 2015 and $42.0 million at December 31, 2014 ), pooled trust preferred securities issued by financial institutions ( $706,000 at December 31, 2015 and $4.1 million at December 31, 2014 ) and other corporate debt issued by non-financial institutions ( $4.0 million at December 31, 2015 and $1.9 million at December 31, 2014 ). Level 2 investments include subordinated debt, other corporate debt issued by non-financial institutions and $36.5 million and $38.2 million of single-issuer trust preferred securities held at December 31, 2015 and 2014 , respectively. The fair values for these corporate debt securities are determined by a third-party pricing service, as detailed above. Level 3 investments include the Corporation's investments in pooled trust preferred securities ( $706,000 at December 31, 2015 and $4.1 million at December 31, 2014 ) and certain single-issuer trust preferred securities ( $2.6 million at December 31, 2015 and $3.8 million at December 31, 2014 ). The fair values of these securities were determined based on quotes provided by third-party brokers who determined fair values based predominantly on internal valuation models which were not indicative prices or binding offers. The Corporation’s third-party pricing service cannot derive fair values for these securities primarily due to inactive markets for similar investments. Level 3 values are tested by management primarily through trend analysis, by comparing current values to those reported at the end of the preceding calendar quarter, and determining if they are reasonable based on price and spread movements for this asset class. • Auction rate securities – Due to their illiquidity, ARCs are classified as Level 3 investments and are valued through the use of an expected cash flows model prepared by a third-party valuation expert. The assumptions used in preparing the expected cash flows model include estimates for coupon rates, time to maturity and market rates of return. The most significant unobservable input to the expected cash flows model is an assumed return to market liquidity sometime within the next five years. If the assumed return to market liquidity was lengthened beyond the next five years, this would result in a decrease in the fair value of these ARCs. The Corporation believes that the trusts underlying the ARCs will self-liquidate as student loans are repaid. Level 3 values are tested by management through the performance of a trend analysis of the market price and discount rate. Changes in the price and discount rates are compared to changes in market data, including bond ratings, parity ratios, balances and delinquency levels. • Other assets – Included within this category are the following: • Level 1 assets, consisting of mutual funds that are held in trust for employee deferred compensation plans ( $15.6 million at December 31, 2015 and $16.4 million at December 31, 2014 ) and the fair value of foreign currency exchange contracts ( $547,000 at December 31, 2015 and $1.3 million at December 31, 2014 ). The mutual funds and foreign exchange prices used to measure these items at fair value are based on quoted prices for identical instruments in active markets. • Level 2 assets, representing the fair value of mortgage banking derivatives in the form of interest rate locks and forward commitments with secondary market investors ( $1.5 million at December 31, 2015 and $1.4 million at December 31, 2014 ) and the fair value of interest rate swaps ( $33.0 million at December 31, 2015 and $19.9 million at December 31, 2014 ). The fair values of the interest rate locks, forward commitments and interest rate swaps represent the amounts that would be required to settle the derivative financial instruments at the balance sheet date. See "Note 10 - Derivative Financial Instruments," for additional information. • Other liabilities – Included within this category are the following: • Level 1 employee deferred compensation liabilities which represent amounts due to employees under deferred compensation plans ( $15.6 million at December 31, 2015 and $16.4 million at December 31, 2014 ) and the fair value of foreign currency exchange contracts ( $331,000 at December 31, 2015 and $1.3 million at December 31, 2014 ). The fair values of these liabilities are determined in the same manner as the related assets, as described under the heading "Other assets," above. • Level 2 liabilities, representing the fair value of mortgage banking derivatives in the form of interest rate locks and forward commitments with secondary market investors ( $40,000 at December 31, 2015 and $1.2 million at December 31, 2014 ) and the fair value of interest rate swaps ( $33.0 million at December 31, 2015 and $19.9 million at December 31, 2014 ). The fair values of these liabilities are determined in the same manner as the related assets, which are described under the heading "Other assets" above. The following table presents the changes in available for sale investment securities measured at fair value on a recurring basis using unobservable inputs (Level 3) for the years ended December 31 : Pooled Trust Single-issuer ARCs (in thousands) Balance as of December 31, 2013 $ 5,306 $ 3,781 $ 159,274 Realized adjustments to fair value (1) (18 ) — — Unrealized adjustments to fair value (2) 923 32 3,970 Sales (1,888 ) — (11,912 ) Settlements - calls (239 ) — (51,212 ) Discount accretion (3) 4 7 821 Balance as of December 31, 2014 4,088 3,820 100,941 Sales (3,633 ) — — Unrealized adjustments to fair value (2) 366 (230 ) (903 ) Settlements - calls (117 ) (970 ) (2,446 ) Discount accretion (3) 2 10 467 Balance as of December 31, 2015 $ 706 $ 2,630 $ 98,059 (1) Realized adjustments to fair value represent credit related other-than-temporary impairment charges and gains on sales of investment securities, both included as components of investment securities gains on the consolidated statements of income. (2) Pooled trust preferred securities, single-issuer trust preferred securities and ARCs are classified as available for sale investment securities; as such, the unrealized adjustment to fair value was recorded as an unrealized holding gain (loss) and included as a component of available for sale investment securities on the consolidated balance sheets. (3) Included as a component of net interest income on the consolidated statements of income. Certain financial assets are not measured at fair value on an ongoing basis but are subject to fair value measurement in certain circumstances, such as upon their acquisition or when there is evidence of impairment. The following table presents the Corporation's financial assets measured at fair value on a nonrecurring basis and reported on the consolidated balance sheets at December 31 : 2015 Level 1 Level 2 Level 3 Total (in thousands) Net loans $ — $ — $ 138,491 $ 138,491 Other financial assets — — 52,043 52,043 Total assets $ — $ — $ 190,534 $ 190,534 2014 Level 1 Level 2 Level 3 Total (in thousands) Net loans $ — $ — $ 127,834 $ 127,834 Other financial assets — — 54,170 54,170 Total assets $ — $ — $ 182,004 $ 182,004 The valuation techniques used to measure fair value for the items in the table above are as follows: • Net loans – This category consists of loans that were evaluated for impairment under FASB ASC Section 310-10-35 and have been classified as Level 3 assets. The amount shown is the balance of impaired loans, net of the related allowance for loan losses. See "Note 4 - Loans and Allowance for Credit Losses," for additional details. • Other financial assets – This category includes OREO ( $11.1 million at December 31, 2015 and $12.0 million at December 31, 2014 ) and MSRs ( $40.9 million at December 31, 2015 and $42.1 million at December 31, 2014 ), both classified as Level 3 assets. Fair values for OREO were based on estimated selling prices less estimated selling costs for similar assets in active markets. MSRs are initially recorded at fair value upon the sale of residential mortgage loans to secondary market investors. MSRs are amortized as a reduction to servicing income over the estimated lives of the underlying loans. MSRs are stratified and evaluated for impairment by comparing each stratum's carrying amount to its estimated fair value. Fair values are determined at the end of each quarter through a discounted cash flows valuation, prepared by a third-party valuation expert. Significant inputs to the valuation include expected net servicing income, the discount rate and the expected life of the underlying loans. Expected life is based on the contractual terms of the loans, as adjusted for prepayment projections. The weighted average annual constant prepayment rate and the weighted average discount rate used in the December 31, 2015 valuation were 11.2% and 9.6% , respectively. Management tests the reasonableness of the significant inputs to the third-party valuation in comparison to market data. As required by FASB ASC Section 825-10-50, the following table details the book values and the estimated fair values of the Corporation’s financial instruments as of December 31, 2015 and 2014 . A general description of the methods and assumptions used to estimate such fair values is also provided. 2015 2014 Book Value Estimated Book Value Estimated (in thousands) FINANCIAL ASSETS Cash and due from banks $ 101,120 $ 101,120 $ 105,702 $ 105,702 Interest-bearing deposits with other banks 230,300 230,300 358,130 358,130 Federal Reserve Bank and FHLB stock 62,216 62,216 64,953 64,953 Loans held for sale (1) 16,886 16,886 17,522 17,522 Securities available for sale (1) 2,484,773 2,484,773 2,323,371 2,323,371 Loans, net of unearned income (1) 13,838,602 13,709,957 13,111,716 13,030,543 Accrued interest receivable 42,767 42,767 41,818 41,818 Other financial assets (1) 166,920 166,920 169,764 169,764 FINANCIAL LIABILITIES Demand and savings deposits $ 11,267,367 $ 11,267,367 $ 10,296,055 $ 10,296,055 Time deposits 2,864,950 2,862,868 3,071,451 3,069,883 Short-term borrowings 497,663 497,663 329,719 329,719 Accrued interest payable 10,724 10,724 18,045 18,045 Other financial liabilities (1) 190,927 190,927 172,786 172,786 FHLB advances and long-term debt 949,542 959,315 1,139,413 1,142,980 (1) These financial instruments, or certain financial instruments within these categories, are measured at fair value on the Corporation’s consolidated balance sheets. Descriptions of the fair value determinations for these financial instruments are disclosed above. Fair values of financial instruments are significantly affected by the assumptions used, principally the timing of future cash flows and discount rates. Because assumptions are inherently subjective in nature, the estimated fair values cannot be substantiated by comparison to independent market quotes and, in many cases, the estimated fair values could not necessarily be realized in an immediate sale or settlement of the instrument. The aggregate fair value amounts presented do not necessarily represent management’s estimate of the underlying value of the Corporation. For short-term financial instruments, defined as those with remaining maturities of 90 days or less, and excluding those recorded at fair value on the Corporation’s consolidated balance sheets, book value was considered to be a reasonable estimate of fair value. The following instruments are predominantly short-term: Assets Liabilities Cash and due from banks Demand and savings deposits Interest-bearing deposits with other banks Short-term borrowings Accrued interest receivable Accrued interest payable Federal Reserve Bank and FHLB stock represent restricted investments and are carried at cost on the consolidated balance sheets. Fair values for loans and time deposits were estimated by discounting future cash flows using the current rates at which similar loans would be made to borrowers and similar deposits would be issued to customers for the same remaining maturities. Fair values estimated in this manner do not fully incorporate an exit price approach to fair value, as defined in FASB ASC Topic 820. The fair values of FHLB advances and long-term debt were estimated by discounting the remaining contractual cash flows using a rate at which the Corporation could issue debt with similar remaining maturities as of the balance sheet date. These borrowings would be categorized within Level 2 liabilities under FASB ASC Topic 820.

Condensed Financial Information

Condensed Financial Information - Parent Company Only	12 Months Ended
	Dec. 31, 2015
Condensed Financial Information of Parent Company Only Disclosure [Abstract]
Condensed Financial Statements - Parent Company Only	NOTE 19 – CONDENSED FINANCIAL INFORMATION - PARENT COMPANY ONLY CONDENSED BALANCE SHEETS (in thousands) December 31 December 31 2015 2014 2015 2014 ASSETS LIABILITIES AND EQUITY Cash $ — $ 137 Long-term debt $ 361,504 $ 465,936 Other assets 4,337 10,053 Payable to non-bank subsidiaries 188,087 84,676 Receivable from subsidiaries 29,249 29,120 Other liabilities 77,263 81,682 Total Liabilities 626,854 632,294 Investments in: Bank subsidiaries 2,226,975 2,174,786 Non-bank subsidiaries 408,187 414,863 Shareholders’ equity 2,041,894 1,996,665 Total Assets $ 2,668,748 $ 2,628,959 Total Liabilities and Shareholders’ Equity $ 2,668,748 $ 2,628,959 CONDENSED STATEMENTS OF INCOME 2015 2014 2013 (in thousands) Income: Dividends from subsidiaries $ 114,000 $ 139,150 $ 114,438 Other (1) 141,241 120,543 106,297 255,241 259,693 220,735 Expenses 176,457 152,243 138,164 Income before income taxes and equity in undistributed net income of subsidiaries 78,784 107,450 82,571 Income tax benefit (11,834 ) (10,549 ) (10,744 ) 90,618 117,999 93,315 Equity in undistributed net income (loss) of: Bank subsidiaries 60,806 33,134 56,552 Non-bank subsidiaries (1,922 ) 6,761 11,973 Net Income $ 149,502 $ 157,894 $ 161,840 (1) Consists primarily of management fees received from subsidiary banks. CONDENSED STATEMENTS OF CASH FLOWS 2015 2014 2013 (in thousands) Cash Flows From Operating Activities: Net Income $ 149,502 $ 157,894 $ 161,840 Adjustments to reconcile net income to net cash provided by operating activities: Stock-based compensation 5,938 5,865 5,330 Excess tax benefits from stock-based compensation (201 ) (81 ) (302 ) Decrease (increase) in other assets 2,806 (7,120 ) 1,893 Equity in undistributed net income of subsidiaries (58,884 ) (39,895 ) (68,525 ) Loss on redemption of trust preferred securities 5,626 — — Increase in other liabilities and payable to non-bank subsidiaries 106,490 37,354 26,946 Total adjustments 61,775 (3,877 ) (34,658 ) Net cash provided by operating activities 211,277 154,017 127,182 Cash Flows From Investing Activities — — — Cash Flows From Financing Activities: Repayments of long-term debt (254,640 ) — — Additions to long-term debt 147,779 97,113 — Net proceeds from issuance of common stock 10,607 8,201 9,936 Excess tax benefits from stock-based compensation 201 81 302 Dividends paid (65,361 ) (64,028 ) (46,525 ) Acquisition of treasury stock (50,000 ) (175,255 ) (90,927 ) Deferred accelerated stock repurchase payment — (20,000 ) — Net cash used in financing activities (211,414 ) (153,888 ) (127,214 ) Net (Decrease) Increase in Cash and Cash Equivalents (137 ) 129 (32 ) Cash and Cash Equivalents at Beginning of Year 137 8 40 Cash and Cash Equivalents at End of Year $ — $ 137 $ 8

Summary of Significant Accoun28

Summary of Significant Accounting Policies (Policies)	12 Months Ended
	Dec. 31, 2015
Accounting Policies [Abstract]
Business and Basis of Financial Statement Presentation	Business: Fulton Financial Corporation (Parent Company) is a multi-bank financial holding company which provides a full range of banking and financial services to businesses and consumers through its six wholly owned banking subsidiaries: Fulton Bank, N.A., Fulton Bank of New Jersey, The Columbia Bank, Lafayette Ambassador Bank, FNB Bank, N.A. and Swineford National Bank. In addition, the Parent Company owns the following non-bank subsidiaries: Fulton Financial Realty Company, Central Pennsylvania Financial Corp., FFC Management, Inc., FFC Penn Square, Inc. and Fulton Insurance Services Group, Inc. Collectively, the Parent Company and its subsidiaries are referred to as the Corporation. The Corporation’s primary sources of revenue are interest income on loans and investment securities and fee income on its products and services. Its expenses consist of interest expense on deposits and borrowed funds, provision for credit losses, other operating expenses and income taxes. The Corporation’s primary competition is other financial services providers operating in its region. Competitors also include financial services providers located outside the Corporation’s geographical market as a result of the growth in electronic delivery systems. The Corporation is subject to the regulations of certain Federal and state agencies and undergoes periodic examinations by such regulatory authorities. The Corporation offers, through its banking subsidiaries, a full range of retail and commercial banking services in Pennsylvania, Delaware, Maryland, New Jersey and Virginia. Industry diversity is the key to the economic well-being of these markets, and the Corporation is not dependent upon any single customer or industry. Basis of Financial Statement Presentation: The consolidated financial statements have been prepared in conformity with accounting principles generally accepted in the United States (U.S. GAAP) and include the accounts of the Parent Company and all wholly owned subsidiaries. All significant intercompany accounts and transactions have been eliminated. The preparation of financial statements in accordance with U.S. GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities, the disclosed amount of contingent assets and liabilities as of the date of the financial statements and the reported amounts of revenues and expenses during the period. Actual results could differ from those estimates. The Corporation evaluates subsequent events through the date of the filing of this report with the Securities and Exchange Commission (SEC).
Federal Reserve Bank and Federal Home Loan Bank (FHLB) Stock	Federal Reserve Bank and Federal Home Loan Bank Stock: Certain of the Corporation's wholly owned banking subsidiaries are members of the Federal Reserve Bank and Federal Home Loan Bank and are required by federal law to hold stock in these institutions according to predetermined formulas. These restricted investments are carried at cost on the consolidated balance sheets and are periodically evaluated for impairment. Each of the Corporation’s subsidiary banks is a member of the Federal Home Loan Bank for the region encompassing the headquarters of the subsidiary bank. Memberships are maintained with the Atlanta, New York and Pittsburgh regional Federal Home Loan Banks (collectively referred to as the FHLB).
Investments	Investments: Debt securities are classified as held to maturity at the time of purchase when the Corporation has both the intent and ability to hold these investments until they mature. Such debt securities are carried at cost, adjusted for amortization of premiums and accretion of discounts using the effective yield method. The Corporation does not engage in trading activities, however, since the investment portfolio serves as a source of liquidity, all debt securities and marketable equity securities are classified as available for sale. Securities available for sale are carried at estimated fair value with the related unrealized holding gains and losses reported in shareholders’ equity as a component of other comprehensive income, net of tax. Realized securities gains and losses are computed using the specific identification method and are recorded on a trade date basis. Securities are evaluated periodically to determine whether declines in value are other-than-temporary. For its investments in equity securities, most notably its investments in stocks of financial institutions, the Corporation evaluates the near-term prospects of the issuers in relation to the severity and duration of the impairment. Equity securities with fair values less than cost are considered to be other-than-temporarily impaired if the Corporation does not have the ability and intent to hold the investments for a reasonable period of time that would be sufficient for a recovery of fair value. Impaired debt securities are determined to be other-than-temporarily impaired if the Corporation concludes at the balance sheet date that it has the intent to sell, or believes it will more likely than not be required to sell, an impaired debt security before a recovery of its amortized cost basis. Credit losses on other-than-temporarily impaired debt securities are recorded through earnings, regardless of the intent or the requirement to sell. Credit loss is measured as the difference between the present value of an impaired debt security’s expected cash flows and its amortized cost. Non-credit related other-than-temporary impairment charges are recorded as decreases to accumulated other comprehensive income as long as the Corporation has no intent or expected requirement to sell the impaired debt security before a recovery of its amortized cost basis.
Loans and Revenue Recognition	Loans and Revenue Recognition : Loan and lease financing receivables are stated at their principal amount outstanding, except for mortgage loans held for sale, which are carried at fair value. Interest income on loans is accrued as earned. Unearned income on lease financing receivables is recognized on a basis which approximates the effective yield method. In general, a loan is placed on non-accrual status once it becomes 90 days delinquent as to principal or interest. In certain cases a loan may be placed on non-accrual status prior to being 90 days delinquent if there is an indication that the borrower is having difficulty making payments, or the Corporation believes it is probable that all amounts will not be collected according to the contractual terms of the loan agreement. When interest accruals are discontinued, unpaid interest previously credited to income is reversed. Non-accrual loans may be restored to accrual status when all delinquent principal and interest has been paid currently for six consecutive months or the loan is considered secured and in the process of collection. The Corporation generally applies payments received on non-accruing loans to principal until such time as the principal is paid off, after which time any payments received are recognized as interest income. If the Corporation believes that all amounts outstanding on a non-accrual loan will ultimately be collected, payments received subsequent to its classification as a non-accrual loan are allocated between interest income and principal. A loan that is 90 days delinquent may continue to accrue interest if the loan is both adequately secured and is in the process of collection. Past due status is determined based on contractual due dates for loan payments. An adequately secured loan is one that has collateral with a supported fair value that is sufficient to discharge the debt, and/or has an enforceable guarantee from a financially responsible party. A loan is considered to be in the process of collection if collection is proceeding through legal action or through other activities that are reasonably expected to result in repayment of the debt or restoration to current status in the near future. Loans and lease financing receivables deemed to be a loss are written off through a charge against the allowance for loan losses. Closed-end consumer loans are generally charged off when they become 120 days past due ( 180 days for open-end consumer loans) if they are not adequately secured by real estate. All other loans are evaluated for possible charge-off when it is probable that the balance will not be collected, based on the ability of the borrower to pay and the value of the underlying collateral. Principal recoveries of loans previously charged off are recorded as increases to the allowance for loan losses.
Loan Origination Fees and Costs	Loan Origination Fees and Costs: Loan origination fees and the related direct origination costs are deferred and amortized over the life of the loan as an adjustment to interest income generally using the effective yield method. For mortgage loans sold, net loan origination fees and costs are included in the gain or loss on sale of the related loan.
Troubled Debt Restructurings (TDRs)	Troubled Debt Restructurings (TDRs): Loans whose terms are modified are classified as TDRs if the Corporation grants the borrowers concessions and it is determined that those borrowers are experiencing financial difficulty. Concessions, whether negotiated or imposed by bankruptcy, granted under a TDR typically involve a temporary deferral of scheduled loan payments, an extension of a loan’s stated maturity date or a reduction in the interest rate. Non-accrual TDRs can be restored to accrual status if principal and interest payments, under the modified terms, are current for six consecutive months after modification.
Allowance for Credit Losses	Allowance for Credit Losses: The allowance for credit losses consists of the allowance for loan losses and the reserve for unfunded lending commitments. The allowance for loan losses represents management’s estimate of incurred losses in the loan portfolio as of the balance sheet date and is recorded as a reduction to loans. The reserve for unfunded lending commitments represents management’s estimate of incurred losses in its unfunded loan commitments and is recorded in other liabilities on the consolidated balance sheets. The allowance for credit losses is increased by charges to expense, through the provision for credit losses, and decreased by charge-offs, net of recoveries. Management believes that the allowance for loan losses and the reserve for unfunded lending commitments are adequate as of the balance sheet date; however, future changes to the allowance or reserve may be necessary based on changes in any of the factors discussed in the following paragraphs. Maintaining an adequate allowance for credit losses is dependent upon various factors, including the ability to identify potential problem loans in a timely manner. For commercial loans, commercial mortgages and construction loans to commercial borrowers, an internal risk rating process is used. The Corporation believes that internal risk ratings are the most relevant credit quality indicator for these types of loans. The migration of loans through the various internal risk rating categories is a significant component of the allowance for credit loss methodology for these loans, which bases the probability of default on this migration. Assigning risk ratings involves judgment. The Corporation's loan review officers provide a separate assessment of risk rating accuracy. Risk ratings may be changed based on the ongoing monitoring procedures performed by loan officers or credit administration staff, or if specific loan review assessments identify a deterioration or an improvement in the loan. The following is a summary of the Corporation's internal risk rating categories: • Pass : These loans do not currently pose undue credit risk and can range from the highest to average quality, depending on the degree of potential risk. • Special Mention : These loans have an undue and unwarranted credit risk, but not to the point of justifying a classification of substandard. Loans in this category are currently acceptable, but are nevertheless potentially weak. • Substandard or Lower : These loans are inadequately protected by current sound worth and paying capacity of the borrower. There exists a well-defined weakness or weaknesses that jeopardize the normal repayment of the debt. The Corporation does not assign internal risk ratings for smaller balance, homogeneous loans, such as: home equity, residential mortgage, consumer, lease receivables and construction loans to individuals secured by residential real estate. For these loans, the most relevant credit quality indicator is delinquency status. The migration of loans through the various delinquency status categories is a significant component of the allowance for credit loss methodology for these loans, which bases the probability of default on this migration. The Corporation’s allowance for loan losses includes: 1) specific allowances allocated to loans evaluated for impairment under the Financial Accounting Standards Board's Accounting Standards Codification (FASB ASC) Section 310-10-35; and 2) allowances calculated for pools of loans measured for impairment under FASB ASC Subtopic 450-20. A loan is considered to be impaired if it is probable that all amounts will not be collected according to the contractual terms of the loan agreement. Impaired loans consist of all loans on non-accrual status and accruing TDRs. An allowance for loan losses is established for an impaired loan if its carrying value exceeds its estimated fair value. Impaired loans to borrowers with total outstanding commitments greater than or equal to $1.0 million are evaluated individually for impairment. Impaired loans to borrowers with total outstanding commitments less than $1.0 million are pooled and measured for impairment collectively. All loans evaluated for impairment under FASB ASC Section 310-10-35 are measured for losses on a quarterly basis. As of December 31, 2015 and 2014 , substantially all of the Corporation’s impaired loans to borrowers with total outstanding loan balances greater than or equal to $1.0 million were measured based on the estimated fair value of each loan’s collateral. Collateral could be in the form of real estate, in the case of impaired commercial mortgages and construction loans, or business assets, such as accounts receivable or inventory, in the case of commercial and industrial loans. Commercial and industrial loans may also be secured by real property. For loans secured by real estate, estimated fair values are determined primarily through appraisals performed by state certified third-party appraisers, discounted to arrive at expected net sale proceeds. For collateral dependent loans, estimated real estate fair values are also net of estimated selling costs. When a real estate secured loan becomes impaired, a decision is made regarding whether an updated appraisal of the real estate is necessary. This decision is based on various considerations, including: the age of the most recent appraisal; the loan-to-value ratio based on the original appraisal; the condition of the property; the Corporation’s experience and knowledge of the real estate market; the purpose of the loan; market factors; payment status; the strength of any guarantors; and the existence and age of other indications of value such as broker price opinions, among others. The Corporation generally obtains updated state certified third-party appraisals for impaired loans secured predominantly by real estate every 12 months. As of December 31, 2015 and 2014 , approximately 69% and 81% , respectively, of impaired loans with principal balances greater than or equal to $1.0 million , whose primary collateral is real estate, were measured at estimated fair value using state certified third-party appraisals that had been updated within the preceding 12 months. When updated appraisals are not obtained for loans evaluated for impairment under FASB ASC Section 310-10-35 that are secured by real estate, fair values are estimated based on the original appraisal values, as long as the original appraisal indicated an acceptable loan-to-value position and, in the opinion of the Corporation's internal credit administration staff, there has not been a significant deterioration in the collateral value since the original appraisal was performed. Original appraisals are typically used only when the estimated collateral value, as adjusted appropriately for the age of the appraisal, results in a current loan-to-value ratio that is lower than the Corporation's loan-to-value requirements for new loans, generally less than 70% . For impaired loans with principal balances greater than or equal to $1.0 million secured by non-real estate collateral, such as accounts receivable or inventory, estimated fair values are determined based on borrower financial statements, inventory listings, accounts receivable agings or borrowing base certificates. Indications of value from these sources are generally discounted based on the age of the financial information or the quality of the assets. Liquidation or collection discounts are applied to these assets based upon existing loan evaluation policies. All loans not evaluated for impairment under FASB ASC Section 310-10-35 are evaluated for impairment under FASB ASC Subtopic 450-20, using a pooled loss evaluation approach. In general, these loans include residential mortgages, home equity loans, consumer loans, and lease receivables. Accruing commercial loans, commercial mortgages and construction loans are also evaluated for impairment under FASB ASC Subtopic 450-20. The Corporation segments its loan portfolio by general loan type, or "portfolio segments," as presented in the table under the heading, "Loans, net of unearned income," within Note 4, "Loans and Allowance for Credit Losses." Certain portfolio segments are further disaggregated and evaluated collectively for impairment based on "class segments," which are largely based on the type of collateral underlying each loan. For commercial loans, class segments include loans secured by collateral and unsecured loans. Construction loan class segments include loans secured by commercial real estate, loans to commercial borrowers secured by residential real estate and loans to individuals secured by residential real estate. Consumer loan class segments are based on collateral types and include direct consumer installment loans and indirect automobile loans. The Corporation calculates allowance allocation needs for loans measured under FASB ASC Subtopic 450-20 through the following procedures: • The loans are segmented into pools with similar characteristics, as noted above. Commercial loans, commercial mortgages and construction loans to commercial borrowers are further segmented into separate pools based on internally assigned risk ratings. Residential mortgages, home equity loans, consumer loans, and lease receivables are further segmented into separate pools based on delinquency status. • A loss rate is calculated for each pool through a migration analysis of historical losses as loans migrate through the various risk rating or delinquency categories. Estimated loss rates are based on a probability of default and a loss rate forecast. • The loss rate is adjusted to consider qualitative factors, such as economic conditions and trends. • The resulting adjusted loss rate is applied to the balance of the loans in the pool to arrive at the allowance allocation for the pool. The allocation of the allowance for credit losses is reviewed to evaluate its appropriateness in relation to the overall risk profile of the loan portfolio. The Corporation considers risk factors such as: local and national economic conditions; trends in delinquencies and non-accrual loans; the diversity of borrower industry types; and the composition of the portfolio by loan type. An unallocated allowance is maintained for factors and conditions that exist at the balance sheet date, but are not specifically identifiable, and to recognize the inherent imprecision in estimating and measuring loss exposure.
Premises and Equipment	Premises and Equipment: Premises and equipment are stated at cost, less accumulated depreciation and amortization. The provision for depreciation and amortization is generally computed using the straight-line method over the estimated useful lives of the related assets, which are a maximum of 50 years for buildings and improvements, 8 years for furniture and 5 years for equipment. Leasehold improvements are amortized over the shorter of the useful life or the non-cancelable lease term. Interest costs incurred during the construction of major bank premises are capitalized.
Other Real Estate Owned	Other Real Estate Owned (OREO): Assets acquired in settlement of mortgage loan indebtedness are recorded as OREO and are included in other assets on the consolidated balance sheets, initially at the lower of the estimated fair value of the asset, less estimated selling costs, or the carrying amount of the loan. Costs to maintain the assets and subsequent gains and losses on sales are included in OREO and repossession expense on the consolidated statements of income.
Mortgage Servicing Rights	Mortgage Servicing Rights (MSRs): The estimated fair value of MSRs related to residential mortgage loans sold and serviced by the Corporation is recorded as an asset upon the sale of such loans. MSRs are amortized as a reduction to servicing income over the estimated lives of the underlying loans. MSRs are stratified and evaluated for impairment by comparing each stratum's carrying amount to its estimated fair value. Fair values are determined through a discounted cash flows valuation completed by a third-party valuation expert. Significant inputs to the valuation include expected net servicing income, the discount rate and the expected lives of the underlying loans. Expected life is based on the contractual terms of the loans, as adjusted for prepayment projections. To the extent the amortized cost of the MSRs exceeds their estimated fair value, a valuation allowance is established through a charge against servicing income, included as a component of mortgage banking income on the consolidated statements of income. If subsequent valuations indicate that impairment no longer exists, the valuation allowance is reduced through an increase to servicing income.
Derivative Financial Instruments	Derivative Financial Instruments: The Corporation manages its exposure to certain interest rate and foreign currency risks through the use of derivatives. None of the Corporation's outstanding derivative contracts are designated as hedges and none are entered into for speculative purposes. Derivative instruments are carried at fair value, with changes in fair values recognized in earnings as components of non-interest income or non-interest expense on the consolidated statements of income. Derivative contracts create counterparty credit risk with both the Corporation's customers and with institutional derivative counterparties. The Corporation manages counterparty credit risk through its credit approval processes, monitoring procedures and obtaining adequate collateral, when the Corporation determines it is appropriate to do so and in accordance with counterparty contracts. Mortgage Banking Derivatives In connection with its mortgage banking activities, the Corporation enters into commitments to originate certain fixed-rate residential mortgage loans for customers, also referred to as interest rate locks. In addition, the Corporation enters into forward commitments for the future sales or purchases of mortgage-backed securities to or from third-party counterparties to hedge the effect of changes in interest rates on the values of both the interest rate locks and mortgage loans held for sale. Forward sales commitments may also be in the form of commitments to sell individual mortgage loans at a fixed price at a future date. The amount necessary to settle each interest rate lock is based on the price that secondary market investors would pay for loans with similar characteristics, including interest rate and term, as of the date fair value is measured. Gross derivative assets and liabilities are recorded in other assets and other liabilities, respectively, on the consolidated balance sheets, with changes in fair values during the period recorded in mortgage banking income on the consolidated statements of income. Interest Rate Swaps The Corporation enters into interest rate swaps with certain qualifying commercial loan customers to meet their interest rate risk management needs. The Corporation simultaneously enters into interest rate swaps with dealer counterparties, with identical notional amounts and terms. The net result of these interest rate swaps is that the customer pays a fixed rate of interest and the Corporation receives a floating rate. These interest rate swaps are derivative financial instruments that are recorded at their fair value in other assets and liabilities on the consolidated balance sheets. Changes in fair value during the period are recorded in other non-interest expense on the consolidated statements of income. Foreign Exchange Contracts The Corporation enters into foreign exchange contracts to accommodate the needs of its customers. Foreign exchange contracts are commitments to buy or sell foreign currency on a future date at a contractual price. The Corporation offsets its foreign exchange contract exposure with customers by entering into contracts with third-party correspondent financial institutions to mitigate its exposure to fluctuations in foreign currency exchange rates. The Corporation also holds certain amounts of foreign currency with international correspondent banks. The Corporation's policy limits the total net foreign currency open positions, which includes all outstanding contracts and foreign account balances, to $500,000 . Gross derivative assets and liabilities are recorded in other assets and other liabilities, respectively, on the consolidated balance sheets, with changes in fair values during the period recorded in other service charges and fees on the consolidated statements of income.
Balance Sheet Offsetting	Balance Sheet Offsetting: Although certain financial assets and liabilities may be eligible for offset on the consolidated balance sheets as they are subject to master netting arrangements or similar agreements, the Corporation elects to not offset such qualifying assets and liabilities. The Corporation is a party to interest rate swap transactions with financial institution counterparties and customers. Under these agreements, the Corporation has the right to net-settle multiple contracts with the same counterparty in the event of default on, or termination of, any one contract. Cash collateral is posted by the party with a net liability position in accordance with contract thresholds and can be used to settle the fair value of the interest rate swap agreements in the event of default. The Corporation is also a party to foreign currency exchange contracts with financial institution counterparties, under which the Corporation has the right to net-settle multiple contracts with the same counterparty in the event of default on, or termination of, any one contract. As with interest rate swap contracts, cash collateral is posted by the party with a net liability position in accordance with contract thresholds and can be used to settle the fair value of the foreign currency exchange contracts in the event of default. For additional details, see "Note 10 - Derivative Financial Instruments." The Corporation also enters into agreements with customers in which it sells securities subject to an obligation to repurchase the same or similar securities, referred to as repurchase agreements. Under these agreements, the Corporation may transfer legal control over the assets but still maintain effective control through agreements that both entitle and obligate the Corporation to repurchase the assets. Therefore, repurchase agreements are reported as secured borrowings, classified in short-term borrowings on the consolidated balance sheets, while the securities underlying the repurchase agreements remain classified with investment securities on the consolidated balance sheets. The Corporation has no intention of setting off these amounts, therefore, these repurchase agreements are not eligible for offset.
Income Taxes	Income Taxes:
Stock-Based Compensation	Stock-Based Compensation: The Corporation grants equity awards to employees, consisting of stock options, restricted stock, restricted stock units (RSUs) and performance-based restricted stock units (PSUs) under its Amended and Restated Equity and Cash Incentive Compensation Plan (Employee Equity Plan). In addition, employees may purchase stock under the Corporation’s Employee Stock Purchase Plan (ESPP). The Corporation also grants stock equity awards to non-employee members of its board of directors under the 2011 Directors’ Equity Participation Plan (Directors’ Plan). Under the Directors’ Plan, the Corporation can grant equity awards to non-employee holding company and subsidiary bank directors in the form of stock options, restricted stock or common stock. Stock option fair values are estimated through the use of the Black-Scholes valuation methodology as of the date of grant. Stock options carry terms of up to ten years. The fair value of restricted stock, RSUs and a majority of PSUs are based on the trading price of the Corporation's stock on the date of grant. The fair value of certain PSUs are estimated through the use of the Monte Carlo valuation methodology as of the date of grant. Equity awards issued under the Employee Equity Plan are generally granted annually and become fully vested over or after a three -year vesting period. The vesting period for non-performance-based awards represents the period during which employees are required to provide service in exchange for such awards. Equity awards under the Directors' Plan generally vest immediately upon grant. Certain events, as defined in the Employee Equity Plan and the Directors' Plan, result in the acceleration of the vesting of equity awards. Restricted stock, RSUs and PSUs earn dividends during the vesting period, which are forfeitable if the awards do not vest. The fair value of stock options, restricted stock and RSUs granted to employees is recognized as compensation expense over the vesting period for such awards. Compensation expense for PSUs is also recognized over the vesting period, however, compensation expense for PSUs may vary based on the expectations for actual performance relative to defined performance measures.
Net Income Per Share	Net Income Per Share: Basic net income per common share is calculated as net income divided by the weighted average number of shares outstanding. Diluted net income per share is calculated as net income divided by the weighted average number of shares outstanding plus the incremental number of shares added as a result of converting common stock equivalents, calculated using the treasury stock method. The Corporation’s common stock equivalents consist of outstanding stock options, restricted stock, RSUs and PSUs. PSUs are required to be included in weighted average diluted shares outstanding if performance measures, as defined in each PSU award agreement, are met as of the end of the period.
Disclosures about Segments of an Enterprise and Related Information	Disclosures about Segments of an Enterprise and Related Information : The Corporation does not have any operating segments which require disclosure of additional information. While the Corporation owns six separate banks, each engages in similar activities, provides similar products and services, and operates in the same general geographical area. The Corporation’s non-banking activities are immaterial and, therefore, separate information has not been disclosed.
Financial Guarantees	Financial Guarantees : Financial guarantees, which consist primarily of standby and commercial letters of credit, are accounted for by recognizing a liability equal to the fair value of the guarantees and crediting the liability to income over the term of the guarantee. Fair value is estimated based on the fees currently charged to enter into similar agreements with similar terms.
Business Combinations and Intangible Assets	Business Combinations and Intangible Assets : The Corporation accounts for its acquisitions using the purchase accounting method. Purchase accounting requires that all assets acquired and liabilities assumed, including certain intangible assets that must be recognized, be recorded at their estimated fair values as of the acquisition date. Any purchase price exceeding the fair value of net assets acquired is recorded as goodwill. Goodwill is not amortized to expense, but is tested for impairment at least annually. A quantitative annual impairment test is not required if, based on a qualitative analysis, the Corporation determines that the existence of events and circumstances indicate that it is more likely than not that goodwill is not impaired. Write-downs of the balance, if necessary as a result of the impairment test, are charged to expense in the period in which goodwill is determined to be impaired. The Corporation performs its annual test of goodwill impairment as of October 31st of each year. If certain events occur which indicate goodwill might be impaired between annual tests, goodwill must be tested when such events occur. Based on the results of its annual impairment test, the Corporation concluded that there was no impairment in 2015 , 2014 or 2013 . See "Note 6 - Goodwill and Intangible Assets," for additional details. Intangible assets are amortized over their estimated lives. Some intangible assets have indefinite lives and are, therefore, not amortized. All intangible assets must be evaluated for impairment if certain events occur. Any impairment write-downs are recognized as non-interest expense on the consolidated statements of income.
Variable Interest Entities	Variable Interest Entities(VIEs) : FASB ASC Topic 810 provides guidance on when to consolidate certain VIEs in the financial statements of the Corporation. VIEs are entities in which equity investors do not have a controlling financial interest or do not have sufficient equity at risk for the entity to finance activities without additional financial support from other parties. VIEs are assessed for consolidation under ASC Topic 810 when the Corporation holds variable interests in these entities. The Corporation consolidates VIEs when it is deemed to be the primary beneficiary. The primary beneficiary of a VIE is determined to be the party that has the power to make decisions that most significantly affect the economic performance of the VIE and has the obligation to absorb losses or the right to receive benefits that in either case could potentially be significant to the VIE. The Parent Company owns all of the common stock of three subsidiary trusts, which have issued securities (Trust Preferred Securities) in conjunction with the Parent Company issuing junior subordinated deferrable interest debentures to the trusts. The terms of the junior subordinated deferrable interest debentures are the same as the terms of the Trust Preferred Securities (TruPS). The Parent Company’s obligations under the debentures constitute a full and unconditional guarantee by the Parent Company of the obligations of the trusts. The provisions of ASC Topic 810 related to subsidiary trusts, as interpreted by the SEC, disallow consolidation of subsidiary trusts in the financial statements of the Corporation. As a result, TruPS are not included on the Corporation’s consolidated balance sheets. The junior subordinated debentures issued by the Parent Company to the subsidiary trusts, which have the same total balance and rate as the combined equity securities and TruPS issued by the subsidiary trusts, remain in long-term debt. See "Note 9 - Short-Term Borrowings and Long-Term Debt," for additional information. The Corporation has made certain tax credit investments under various Federal programs that promote investment in low and moderate income housing and local economic development. Tax Credit Investments are amortized under the effective yield method over the life of the Federal income tax credits generated as a result of such investments, generally seven to ten years.
Fair Value Measurements	Fair Value Measurements: FASB ASC Topic 820 establishes a fair value hierarchy for the inputs to valuation techniques used to measure assets and liabilities at fair value using the following three categories (from highest to lowest priority): • Level 1 – Inputs that represent quoted prices for identical instruments in active markets. • Level 2 – Inputs that represent quoted prices for similar instruments in active markets, or quoted prices for identical instruments in non-active markets. Also includes valuation techniques whose inputs are derived principally from observable market data other than quoted prices, such as interest rates or other market-corroborated means. • Level 3 – Inputs that are largely unobservable, as little or no market data exists for the instrument being valued. The Corporation has categorized all assets and liabilities required to be measured at fair value on both a recurring and nonrecurring basis into the above three levels. See "Note 18 - Fair Value Measurements," for additional details. Fair Value Option: The Corporation has elected to measure mortgage loans held for sale at fair value. Derivative financial instruments related to mortgage banking activities are also recorded at fair value, as detailed under the heading "Derivative Financial Instruments," below. The Corporation determines fair value for its mortgage loans held for sale based on the price that secondary market investors would pay for loans with similar characteristics, including interest rate and term, as of the date fair value is measured. Changes in fair values during the period are recorded as components of mortgage banking income on the consolidated statements of income. Interest income earned on mortgage loans held for sale is classified in interest income on the consolidated statements of income.
New Accounting Standards	Recently Adopted Accounting Standards: In April 2014, the FASB issued ASC Update 2014-08, "Reporting Discontinued Operations and Disclosures of Disposals of Components of an Entity." ASC Update 2014-08 changes the criteria for reporting discontinued operations, including a change in the definition of what constitutes the disposal of a component and additional disclosure requirements. For public business entities, ASC Update 2014-08 was effective for disposals that occur within annual periods beginning after December 15, 2014. For the Corporation, this standards update was effective with its March 31, 2015 quarterly report on Form 10-Q. The adoption of ASC Update 2014-08 did not have a material impact on the Corporation's consolidated financial statements. In June 2014, the FASB issued ASC Update 2014-11, "Repurchase-to-Maturity Transactions, Repurchase Financings, and Disclosures." In addition to new disclosure requirements, ASC Update 2014-11 requires that all repurchase-to-maturity transactions be accounted for as secured borrowings rather than as sales of financial assets. Also, all transfers of financial assets executed contemporaneously with a repurchase agreement with the same counterparty must be accounted for separately, the result of which would be the treatment of such transactions as secured borrowings. For public business entities, ASC Update 2014-11 was effective for interim and annual reporting periods beginning after December 15, 2014. For the Corporation, this standards update was effective with its March 31, 2015 quarterly report on Form 10-Q. The adoption of ASC Update 2014-11 did not have a material impact on the Corporation’s consolidated financial statements. In June 2014, the FASB issued ASC Update 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." ASC Update 2014-12 clarifies guidance related to accounting for share-based payment awards with terms that allow an employee to vest in the award regardless of whether the employee is rendering service on the date a performance target is achieved. ASC Update 2014-12 requires that a performance target that affects vesting, and that could be achieved after the requisite service period, be treated as a performance condition. As such, the performance target should not be reflected in estimating the grant-date fair value of the award. For public business entities, ASC Update 2014-12 was effective for interim and annual reporting periods beginning after December 15, 2014, with earlier adoption permitted. For the Corporation, this standards update was effective with its March 31, 2015 quarterly report on Form 10-Q. The adoption of ASC Update 2014-12 did not have a material impact on the Corporation’s consolidated financial statements. In August 2014, the FASB issued ASC Update 2014-14, "Receivables - Troubled Debt Restructuring by Creditors." ASC Update 2014-14 clarifies TDR guidance related to the classification and measurement of certain government-sponsored loan guarantee programs upon foreclosure. For public business entities, ASC Update 2014-14 was effective for interim and annual reporting periods beginning after December 15, 2014, with earlier adoption permitted. For the Corporation, this standards update was effective with its March 31, 2015 quarterly report on Form 10-Q. The adoption of ASC Update 2014-14 did not have a material impact on the Corporation’s consolidated financial statements. In November 2014, the FASB issued ASC Update 2014-17, "Business Combinations: Pushdown Accounting." ASC Update 2014-17 was issued to provide guidance on whether and at what threshold an acquired entity can apply pushdown accounting in its separate financial statements. ASC Update 2014-17 applies to the separate financial statements of an acquired entity upon the occurrence of an event in which an acquirer obtains control of the acquired entity. This update was effective upon issuance and did not have an impact on the Corporation's consolidated financial statements. Recently Issued Accounting Standards: In May 2014, the FASB issued ASC Update 2014-09, "Revenue from Contracts with Customers." This standards update establishes a single comprehensive model for entities to use in accounting for revenue arising from contracts with customers and supersedes most current revenue recognition guidance, including industry-specific guidance. The core principle prescribed by this standards update is that an entity recognizes revenue to depict the transfer of promised goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods or services. The standard applies to all contracts with customers, except those that are within the scope of other topics in the FASB ASC. The standard also requires significantly expanded disclosures about revenue recognition. For public business entities, ASC Update 2014-09 is effective for interim and annual reporting periods beginning after December 15, 2017. Early application is not permitted. For the Corporation, this standards update is effective with its March 31, 2018 quarterly report on Form 10-Q. The Corporation is currently evaluating the impact of the adoption of ASC Update 2014-09 on its consolidated financial statements. In August 2014, the FASB issued ASC Update 2014-15, "Presentation of Financial Statements - Going Concern." ASC Update 2014-15 provides guidance regarding management's responsibility to evaluate whether there is substantial doubt about an entity's ability to continue as a going concern and to provide related disclosures. The standards update describes how an entity's management should assess whether there are conditions and events, considered in the aggregate, that raise substantial doubt about an entity's ability to continue as a going concern within one year after the date that the financial statements are issued. For public business entities, ASC Update 2014-15 is effective for annual reporting periods ending after December 15, 2016, with earlier adoption permitted. For the Corporation, this standards update is effective with its December 31, 2016 annual report on Form 10-K. The adoption of ASC Update 2014-15 is not expected to have a material impact on the Corporation’s consolidated financial statements. In November 2014, the FASB issued ASC Update 2014-16, "Derivatives and Hedging: 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." ASC Update 2014-16 was issued to reduce existing diversity in the accounting for hybrid financial instruments issued in the form of a share, such as redeemable convertible preferred stock. ASC Update 2014-16 applies to all entities that are issuers of, or investors in, hybrid financial instruments that are issued in the form of a share, and is effective for public business entities’ annual reporting periods beginning after December 15, 2015 and interim periods within those annual periods, with earlier adoption permitted. For the Corporation, this standards update is effective with its March 31, 2016 quarterly report on Form 10-Q. The adoption of ASC Update 2014-16 is not expected to have a material impact on the Corporation’s consolidated financial statements. In January 2015, the FASB issued ASC Update 2015-01, "Income Statement - Extraordinary and Unusual Items." ASC Update 2015-01 was issued to eliminate the concept of extraordinary items from U.S. GAAP. net of tax, after income from continuing operations. ASC Update 2015-01 amends existing extraordinary items disclosure guidance. Under the amended guidance, reporting entities will no longer separately disclose extraordinary items, net of tax, after income from continuing operations in the income statement. ASC Update 2015-01 is effective for annual reporting periods beginning after December 15, 2015, with earlier adoption permitted provided that the guidance is applied from the beginning of the fiscal year of adoption. The Corporation intends to adopt this standards update effective with its March 31, 2016 quarterly report on Form 10-Q and does not expect the adoption of ASC Update 2015-01 to have a material impact on its consolidated financial statements. In February 2015, the FASB issued ASC Update 2015-02, "Consolidation: Amendments to the Consolidation Analysis." ASC Update 2015-02 changes the way reporting enterprises evaluate whether: (a) they should consolidate limited partnerships and similar entities, (b) fees paid to a decision maker or service provider are variable interests in a VIE, and (c) variable interests in a VIE held by related parties of the reporting enterprise require the reporting enterprise to consolidate the VIE. ASC Update 2015-02 is effective for public business entities' annual and interim reporting periods beginning after December 15, 2015, with earlier adoption permitted. The Corporation intends to adopt this standards update effective with its March 31, 2016 quarterly report on Form 10-Q, and does not expect the adoption of ASC Update 2015-02 to have a material impact on its consolidated financial statements. In April 2015, the FASB issued ASC Update 2015-03, "Interest - Imputation of Interest" and updated ASC Update 2015-03 with the issuance of ASC Update 2015-15, "Presentation and Subsequent Measurement of Debt Issuance Costs Associated with Line-of-Credit Arrangements," in August of 2015. ASC Update 2015-03 simplifies the presentation of debt issuances costs. Debt issuance costs related to a recognized debt liability will be presented on the balance sheet as a direct deduction to the debt liability, similar to the presentation of debt discounts. Under current U.S. GAAP, debt issuance costs are reported on the balance sheet as assets. The costs will continue to be amortized to interest expense using the effective interest method. ASC Update 2015-03 is effective for public business entities' annual and interim reporting periods beginning after December 15, 2015, with earlier adoption permitted. The Corporation intends to adopt this standards update effective with its March 31, 2016 quarterly report on Form 10-Q and does not expect the adoption of ASC Update 2015-03 to have a material impact on its consolidated financial statements. In April 2015, the FASB issued ASC Update 2015-05, "Customer's Accounting for Fees Paid in a Cloud Computing Arrangement." ASC Update 2015-05 provides explicit guidance to determine when a customer's fees paid in a cloud computing arrangement is for the acquisition of software licenses, services, or both. ASC Update 2015-05 is effective for public business entities' annual and interim reporting periods beginning after December 15, 2015, with earlier adoption permitted. The Corporation intends to adopt this standards update effective with its March 31, 2016 quarterly report on Form 10-Q and does not expect the adoption of ASC Update 2015-05 to have a material impact on its consolidated financial statements. In January 2016, the FASB issued ASC Update 2016-01, "Financial Instruments - Overall: Recognition and Measurement of Financial Assets and Financial Liabilities." ASC Update 2016-01 provides guidance regarding the income statement impact of equity investments held by an entity and the recognition of changes in fair value of financial liabilities when the fair value is elected. ASC Update 2016-01 is effective for public business entities' annual and interim reporting periods beginning after December 15, 2017, with earlier adoption permitted. The Corporation intends to adopt this standards update effective with its March 31, 2018 quarterly report on Form 10-Q and does not expect the adoption of ASC Update 2016-01 to have a material impact on its consolidated financial statements. In February 2016, the FASB issued ASC Update 2016-02, "Leases." This standards update states that a lessee should recognize the assets and liabilities that arise from all leases with a term greater than 12 months. The core principle requires the lessee to recognize a liability to make lease payments and a "right-of-use" asset. The accounting applied by the lessor is relatively unchanged as the majority of operating leases should remain classified as operating leases and the income from them recognized, generally, on a straight-line basis over the lease term. The standards update also requires expanded qualitative and quantitative disclosures. For public business entities, ASC Update 2016-02 is effective for interim and annual reporting periods beginning after December 15, 2018. ASC Update 2016-02 mandates a modified retrospective transition for all entities. Early application is permitted. For the Corporation, this standards update is effective with its March 31, 2019 quarterly report on Form 10-Q. The Corporation is currently evaluating the impact of the adoption of ASC Update 2016-02 on its consolidated financial statements.
Reclassification	Reclassifications: Certain amounts in the 2014 and 2013 consolidated financial statements and notes have been reclassified to conform to the 2015 presentation.

Summary of Significant Accoun29

Summary of Significant Accounting Policies (Tables)	12 Months Ended
	Dec. 31, 2015
Accounting Policies [Abstract]
Reconciliation of Weighted Average Common Shares Outstanding	A reconciliation of weighted average common shares outstanding used to calculate basic and diluted net income per share follows: 2015 2014 2013 (in thousands) Weighted average common shares outstanding (basic) 175,721 186,219 193,334 Impact of common stock equivalents 1,053 962 1,020 Weighted average common shares outstanding (diluted) 176,774 187,181 194,354

Investment Securities (Tables)

Investment Securities (Tables)	12 Months Ended
	Dec. 31, 2015
Investments, Debt and Equity Securities [Abstract]
Schedule of Amortized Cost and Fair Values of Investment Securities	The following tables present the amortized cost and estimated fair values of investment securities, which were all classified as available for sale, as of December 31 : Amortized Gross Gross Estimated (in thousands) 2015 U.S. Government securities $ — $ — $ — $ — U.S. Government sponsored agency securities 25,154 35 (53 ) 25,136 State and municipal securities 256,746 6,019 — 262,765 Corporate debt securities 100,336 2,695 (6,076 ) 96,955 Collateralized mortgage obligations 835,439 3,042 (16,972 ) 821,509 Mortgage-backed securities 1,154,935 10,104 (6,204 ) 1,158,835 Auction rate securities 106,772 — (8,713 ) 98,059 Total Debt Securities 2,479,382 21,895 (38,018 ) 2,463,259 Equity securities 14,677 6,845 (8 ) 21,514 Total $ 2,494,059 $ 28,740 $ (38,026 ) $ 2,484,773 2014 U.S. Government securities $ 200 $ — $ — $ 200 U.S. Government sponsored agency securities 209 5 — 214 State and municipal securities 238,250 7,231 (266 ) 245,215 Corporate debt securities 99,016 5,126 (6,108 ) 98,034 Collateralized mortgage obligations 917,395 5,705 (20,787 ) 902,313 Mortgage-backed securities 914,797 16,978 (2,944 ) 928,831 Auction rate securities 108,751 — (7,810 ) 100,941 Total Debt Securities 2,278,618 35,045 (37,915 ) 2,275,748 Equity securities 33,469 14,167 (13 ) 47,623 Total $ 2,312,087 $ 49,212 $ (37,928 ) $ 2,323,371
Schedule of Amortized Cost and Fair Values of Debt Securities by Contractual Maturities	The amortized cost and estimated fair values of debt securities as of December 31, 2015 , by contractual maturity, are shown in the following table. Actual maturities may differ from contractual maturities because borrowers may have the right to call or prepay obligations with or without call or prepayment penalties. Amortized Estimated (in thousands) Due in one year or less $ 75,458 $ 75,945 Due from one year to five years 85,840 87,877 Due from five years to ten years 124,190 127,103 Due after ten years 203,520 191,990 489,008 482,915 Collateralized mortgage obligations 835,439 821,509 Mortgage-backed securities 1,154,935 1,158,835 Total $ 2,479,382 $ 2,463,259
Summary of Gains and Losses from Equity and Debt Securities, and Losses Recognized from Other-than-Temporary Impairment	The following table presents information related to gross gains and losses on the sales of equity and debt securities, and losses recognized for other-than-temporary impairment of investments: Gross Gross Other- Net (in thousands) 2015: Equity securities $ 6,496 $ (1 ) $ — $ 6,495 Debt securities 2,571 — — 2,571 Total $ 9,067 $ (1 ) $ — $ 9,066 2014: Equity securities $ 335 $ — $ (12 ) $ 323 Debt securities 2,058 (322 ) (18 ) 1,718 Total $ 2,393 $ (322 ) $ (30 ) $ 2,041 2013: Equity securities $ 4,391 $ (28 ) $ (27 ) $ 4,336 Debt securities 3,787 (22 ) (97 ) 3,668 Total $ 8,178 $ (50 ) $ (124 ) $ 8,004
Summary Of Other Than Temporary Impairment Charges Recorded In Statement Of Operations	The following table presents a summary of other-than-temporary impairment charges recorded as decreases to investment securities gains on the consolidated statements of income, by investment security type. There were no other-than-temporary impairment charges recorded as decreases to investment securities gains in 2015. 2014 2013 (in thousands) Equity securities - financial institution stocks $ 12 $ 27 Pooled trust preferred securities 18 97 Total other-than-temporary impairment charges $ 30 $ 124
Summary of Cumulative Other-than-Temporary Impairment Charges Recognized in Earnings for Pooled Trust Preferred Securities Held	The following table presents a summary of the cumulative credit related other-than-temporary impairment charges, recognized as components of earnings, for debt securities held by the Corporation at December 31 : 2015 2014 2013 (in thousands) Balance of cumulative credit losses on debt securities, beginning of year $ (16,242 ) $ (20,691 ) $ (23,079 ) Additions for credit losses recorded which were not previously recognized as components of earnings — (18 ) (97 ) Reductions for securities sold during the period 4,730 4,460 2,468 Reductions for increases in cash flows expected to be collected that are recognized over the remaining life of the security 2 7 17 Balance of cumulative credit losses on debt securities, end of year $ (11,510 ) $ (16,242 ) $ (20,691 )
Gross Unrealized Losses and Fair Values of Investments by Category and Length of Time in Continuous Unrealized Loss Position	The following table presents the gross unrealized losses and estimated fair values of investments, aggregated by investment category and length of time that individual securities have been in a continuous unrealized loss position, as of December 31, 2015 : Less Than 12 months 12 Months or Longer Total Estimated Unrealized Estimated Unrealized Estimated Unrealized (in thousands) U.S. Government sponsored agency securities $ 9,957 $ (53 ) $ — $ — $ 9,957 $ (53 ) Corporate debt securities 12,892 (97 ) 33,036 (5,979 ) 45,928 (6,076 ) Collateralized mortgage obligations 166,007 (1,467 ) 467,778 (15,505 ) 633,785 (16,972 ) Mortgage-backed securities 611,920 (4,783 ) 63,818 (1,421 ) 675,738 (6,204 ) Auction rate securities — — 98,059 (8,713 ) 98,059 (8,713 ) Total debt securities 800,776 (6,400 ) 662,691 (31,618 ) 1,463,467 (38,018 ) Equity securities — — 14 (8 ) 14 (8 ) Total $ 800,776 $ (6,400 ) $ 662,705 $ (31,626 ) $ 1,463,481 $ (38,026 )
Summary of Amortized Cost and Fair Values of Corporate Debt Securities	The majority of the Corporation’s available for sale corporate debt securities are issued by financial institutions. The following table presents the amortized cost and estimated fair values of corporate debt securities as of December 31 : 2015 2014 Amortized Estimated Amortized Estimated (in thousands) Single-issuer trust preferred securities $ 44,648 $ 39,106 $ 47,569 $ 42,016 Subordinated debt 51,653 53,108 47,530 50,023 Pooled trust preferred securities — 706 2,010 4,088 Corporate debt securities issued by financial institutions 96,301 92,920 97,109 96,127 Other corporate debt securities 4,035 4,035 1,907 1,907 Available for sale corporate debt securities $ 100,336 $ 96,955 $ 99,016 $ 98,034

Loans and Allowance for Credi31

Loans and Allowance for Credit Losses (Tables)	12 Months Ended
	Dec. 31, 2015
Receivables [Abstract]
Summary of Gross Loans by Type	Loans, net of unearned income are summarized as follows as of December 31 : 2015 2014 (in thousands) Real estate – commercial mortgage $ 5,462,330 $ 5,197,155 Commercial – industrial, financial and agricultural 4,088,962 3,725,567 Real estate – home equity 1,684,439 1,736,688 Real estate – residential mortgage 1,376,160 1,377,068 Real estate – construction 799,988 690,601 Consumer 268,588 265,431 Leasing and other 170,914 127,562 Overdrafts 2,737 4,021 Loans, gross of unearned income 13,854,118 13,124,093 Unearned income (15,516 ) (12,377 ) Loans, net of unearned income $ 13,838,602 $ 13,111,716
Schedule of Allowance for Credit Losses	The following table presents the components of the allowance for credit losses as of December 31 : 2015 2014 2013 (in thousands) Allowance for loan losses $ 169,054 $ 184,144 $ 202,780 Reserve for unfunded lending commitments 2,358 1,787 2,137 Allowance for credit losses $ 171,412 $ 185,931 $ 204,917
Activity in the Allowance for Credit Losses	The following table presents the activity in the allowance for credit losses for the years ended December 31 : 2015 2014 2013 (in thousands) Balance at beginning of year $ 185,931 $ 204,917 $ 225,439 Loans charged off (32,157 ) (44,593 ) (80,212 ) Recoveries of loans previously charged off 15,388 13,107 19,190 Net loans charged off (16,769 ) (31,486 ) (61,022 ) Provision for credit losses 2,250 12,500 40,500 Balance at end of year $ 171,412 $ 185,931 $ 204,917 The following table presents the activity in the allowance for loan losses by portfolio segment for the years ended December 31 and loans, net of unearned income, and their related allowance for loan losses, by portfolio segment, as of December 31: Real Estate - Commercial - Real Estate - Real Estate - Real Estate - Consumer Leasing Unallocated (1) Total (in thousands) Balance at December 31, 2013 $ 55,659 $ 50,330 $ 28,222 $ 33,082 $ 12,649 $ 3,260 $ 3,370 $ 16,208 $ 202,780 Loans charged off (6,004 ) (24,516 ) (5,486 ) (2,918 ) (1,209 ) (2,325 ) (2,135 ) — (44,593 ) Recoveries of loans previously charged off 1,960 4,256 1,025 451 3,177 1,322 916 — 13,107 Net loans charged off (4,044 ) (20,260 ) (4,461 ) (2,467 ) 1,968 (1,003 ) (1,219 ) — (31,486 ) Provision for loan losses (2) 1,878 21,308 4,510 (1,543 ) (4,861 ) 758 (352 ) (8,848 ) 12,850 Balance at December 31, 2014 53,493 51,378 28,271 29,072 9,756 3,015 1,799 7,360 184,144 Loans charged off (4,218 ) (15,639 ) (3,604 ) (3,612 ) (201 ) (2,227 ) (2,656 ) — (32,157 ) Recoveries of loans previously charged off 2,801 5,264 1,362 1,322 2,824 1,130 685 — 15,388 Net loans charged off (1,417 ) (10,375 ) (2,242 ) (2,290 ) 2,623 (1,097 ) (1,971 ) — (16,769 ) Provision for loan losses (2) (4,210 ) 16,095 (3,624 ) (5,407 ) (5,850 ) 667 2,640 1,368 1,679 Balance at December 31, 2015 $ 47,866 $ 57,098 $ 22,405 $ 21,375 $ 6,529 $ 2,585 $ 2,468 $ 8,728 $ 169,054 Allowance for loan losses at December 31, 2015 Measured for impairment under FASB ASC Subtopic 450-20 $ 35,395 $ 42,515 $ 14,412 $ 7,953 $ 4,134 $ 2,563 $ 1,764 $ 8,728 $ 117,464 Evaluated for impairment under FASB ASC Section 310-10-35 12,471 14,583 7,993 13,422 2,395 22 704 N/A 51,590 $ 47,866 $ 57,098 $ 22,405 $ 21,375 $ 6,529 $ 2,585 $ 2,468 $ 8,728 $ 169,054 Loans, net of unearned income at December 31, 2015 Measured for impairment under FASB ASC Subtopic 450-20 $ 5,404,036 $ 4,040,810 $ 1,668,673 $ 1,325,735 $ 784,002 $ 268,555 $ 156,710 N/A $ 13,648,521 Evaluated for impairment under FASB ASC Section 310-10-35 58,294 48,152 15,766 50,425 15,986 33 1,425 N/A 190,081 $ 5,462,330 $ 4,088,962 $ 1,684,439 $ 1,376,160 $ 799,988 $ 268,588 $ 158,135 N/A $ 13,838,602 Allowance for loan losses at December 31, 2014 Measured for impairment under FASB ASC Subtopic 450-20 $ 36,778 $ 38,348 $ 19,047 $ 10,480 $ 6,485 $ 2,980 $ 1,799 $ 7,360 $ 123,277 Evaluated for impairment under FASB ASC Section 310-10-35 16,715 13,030 9,224 18,592 3,271 35 — N/A 60,867 $ 53,493 $ 51,378 $ 28,271 $ 29,072 $ 9,756 $ 3,015 $ 1,799 $ 7,360 $ 184,144 Loans, net of unearned income at December 31, 2014 Measured for impairment under FASB ASC Subtopic 450-20 $ 5,133,896 $ 3,690,561 $ 1,723,230 $ 1,325,717 $ 665,012 $ 265,393 $ 119,206 N/A $ 12,923,015 Evaluated for impairment under FASB ASC Section 310-10-35 63,259 35,006 13,458 51,351 25,589 38 — N/A 188,701 $ 5,197,155 $ 3,725,567 $ 1,736,688 $ 1,377,068 $ 690,601 $ 265,431 $ 119,206 N/A $ 13,111,716 (1) The unallocated allowance, which was approximately 5% and 4% of the total allowance for credit losses as of December 31, 2015 and December 31, 2014 , respectively, was, in the opinion of management, reasonable and appropriate given that the estimates used in the allocation process are inherently imprecise. (2) For the year ended December 31, 2015 , the provision for loan losses excluded a $571,000 increase in the reserve for unfunded lending commitments. The total provision for credit losses, comprised of allocations for both funded and unfunded loans, was $2.3 million for the year ended December 31, 2015 . For the year ended December 31, 2014 , the provision for loan losses excluded a $350,000 decrease in the reserve for unfunded lending commitments. The total provision for credit losses, was $12.5 million for the year ended December 31, 2014 . N/A – Not applicable.
Total Impaired Loans by Class Segment	The following table presents total impaired loans by class segment as of December 31 : 2015 2014 Unpaid Recorded Related Unpaid Recorded Related (in thousands) With no related allowance recorded: Real estate - commercial mortgage $ 27,872 $ 22,596 $ — $ 25,802 $ 23,236 $ — Commercial - secured 18,012 13,702 — 17,599 14,582 — Real estate - residential mortgage 4,790 4,790 — 4,873 4,873 — Construction - commercial residential 9,916 8,865 — 18,041 14,801 — Construction - commercial — — — 1,707 1,581 — 60,590 49,953 68,022 59,073 With a related allowance recorded: Real estate - commercial mortgage 45,189 35,698 12,471 49,619 40,023 16,715 Commercial - secured 39,659 33,629 14,085 24,824 19,335 12,165 Commercial - unsecured 971 821 498 1,241 1,089 865 Real estate - home equity 20,347 15,766 7,993 19,392 13,458 9,224 Real estate - residential mortgage 55,242 45,635 13,422 56,607 46,478 18,592 Construction - commercial residential 9,949 6,290 2,110 14,007 7,903 2,675 Construction - commercial 820 638 217 1,501 1,023 459 Construction - other 331 193 68 452 281 137 Consumer - indirect 14 14 8 20 19 18 Consumer - direct 19 19 14 19 19 17 Leasing and other and overdrafts 1,658 1,425 704 — — — 174,199 140,128 51,590 167,682 129,628 60,867 Total $ 234,789 $ 190,081 $ 51,590 $ 235,704 $ 188,701 $ 60,867 As of December 31, 2015 and 2014 , there were $50.0 million and $59.1 million , respectively, of impaired loans that did not have a related allowance for loan loss. The estimated fair values of the collateral securing these loans exceeded their carrying amount, or the loans have been charged down to realizable collateral values. Accordingly, no specific valuation allowance was considered to be necessary. The following table presents average impaired loans, by class segment, for the years ended December 31 : 2015 2014 2013 Average Interest Income Average Interest Income Average Interest Income (in thousands) With no related allowance recorded: Real estate - commercial mortgage $ 25,345 $ 315 $ 23,467 $ 320 $ 28,603 $ 489 Commercial - secured 15,654 97 18,928 119 30,299 173 Commercial - unsecured 17 — — — 26 — Real estate - home equity — — 180 1 262 1 Real estate - residential mortgage 5,389 124 1,532 31 695 25 Construction - commercial residential 11,685 148 15,421 227 19,847 256 Construction - commercial 915 — 1,907 — 3,480 2 59,005 684 61,435 698 83,212 946 With a related allowance recorded: Real estate - commercial mortgage 39,232 475 38,240 524 44,136 706 Commercial - secured 25,660 150 20,991 129 27,919 153 Commercial - unsecured 1,749 6 895 3 1,411 5 Real estate - home equity 13,887 144 13,976 108 14,092 65 Real estate - residential mortgage 46,252 1,041 50,281 1,178 52,251 1,210 Construction - commercial residential 6,455 79 8,723 136 11,219 168 Construction - commercial 931 — 1,900 — 2,468 3 Construction - other 263 — 387 — 523 1 Consumer - indirect 16 1 7 — 1 — Consumer - direct 17 1 16 1 19 — Leasing and other and overdrafts 285 — — — 11 — 134,747 1,897 135,416 2,079 154,050 2,311 Total $ 193,752 $ 2,581 $ 196,851 $ 2,777 $ 237,262 $ 3,257 (1) All impaired loans, excluding accruing TDRs, were non-accrual loans. Interest income recognized for the years ended December 31, 2015 , 2014 and 2013 represents amounts earned on accruing TDRs.
Financing Receivable Credit Quality Indicators	The following table presents internal credit risk ratings as of December 31 : Pass Special Mention Substandard or Lower Total 2015 2014 2015 2014 2015 2014 2015 2014 (dollars in thousands) Real estate - commercial mortgage $ 5,204,263 $ 4,899,016 $ 102,625 $ 127,302 $ 155,442 $ 170,837 $ 5,462,330 $ 5,197,155 Commercial - secured 3,696,692 3,333,486 92,711 120,584 136,710 110,544 3,926,113 3,564,614 Commercial -unsecured 156,742 146,680 2,761 7,463 3,346 6,810 162,849 160,953 Total commercial - industrial, financial and agricultural 3,853,434 3,480,166 95,472 128,047 140,056 117,354 4,088,962 3,725,567 Construction - commercial residential 140,337 136,109 17,154 27,495 21,812 40,066 179,303 203,670 Construction - commercial 552,710 409,631 3,684 12,202 3,597 5,586 559,991 427,419 Total real estate - construction (excluding construction - other) 693,047 545,740 20,838 39,697 25,409 45,652 739,294 631,089 Total $ 9,750,744 $ 8,924,922 $ 218,935 $ 295,046 $ 320,907 $ 333,843 $ 10,290,586 $ 9,553,811 % of Total 94.8 % 93.4 % 2.1 % 3.1 % 3.1 % 3.5 % 100.0 % 100.0 % The following table presents delinquency and non-performing status for loans that do not have internal credit risk ratings, by class segment, as of December 31 : Performing Delinquent (1) Non-performing (2) Total 2015 2014 2015 2014 2015 2014 2015 2014 (dollars in thousands) Real estate - home equity $ 1,660,773 $ 1,711,017 $ 8,983 $ 10,931 $ 14,683 $ 14,740 $ 1,684,439 $ 1,736,688 Real estate - residential mortgage 1,329,371 1,321,139 18,305 26,934 28,484 28,995 1,376,160 1,377,068 Real estate - construction - other 59,997 59,180 88 — 609 332 60,694 59,512 Consumer - direct 94,262 104,018 2,254 2,891 2,203 2,414 98,719 109,323 Consumer - indirect 166,823 153,358 2,809 2,574 237 176 169,869 156,108 Total consumer 261,085 257,376 5,063 5,465 2,440 2,590 268,588 265,431 Leasing and other and overdrafts 155,870 118,550 759 523 1,506 133 158,135 119,206 Total $ 3,467,096 $ 3,467,262 $ 33,198 $ 43,853 $ 47,722 $ 46,790 $ 3,548,016 $ 3,557,905 % of Total 97.7 % 97.5 % 1.0 % 1.2 % 1.3 % 1.3 % 100.0 % 100.0 % (1) Includes all accruing loans 30 days to 89 days past due. (2) Includes all accruing loans 90 days or more past due and all non-accrual loans
Non-Performing Assets	The following table presents total non-performing assets as of December 31 : 2015 2014 (in thousands) Non-accrual loans $ 129,523 $ 121,080 Loans 90 days or more past due and still accruing 15,291 17,402 Total non-performing loans 144,814 138,482 Other real estate owned 11,099 12,022 Total non-performing assets $ 155,913 $ 150,504
Past due Loan Status and Non-Accrual Loans by Portfolio Segment	The following table presents past due status and non-accrual loans, by portfolio segment and class segment, as of December 31 : 2015 30-59 60-89 ≥ 90 Days Non- Total ≥ 90 Total Past Current Total (in thousands) Real estate - commercial mortgage $ 6,469 $ 1,312 $ 439 $ 40,731 $ 41,170 $ 48,951 $ 5,413,379 $ 5,462,330 Commercial - secured 5,654 2,615 1,853 41,498 43,351 51,620 3,874,493 3,926,113 Commercial - unsecured 510 83 19 701 720 1,313 161,536 162,849 Total Commercial - industrial, financial and agricultural 6,164 2,698 1,872 42,199 44,071 52,933 4,036,029 4,088,962 Real estate - home equity 6,438 2,545 3,473 11,210 14,683 23,666 1,660,773 1,684,439 Real estate - residential mortgage 15,141 3,164 6,570 21,914 28,484 46,789 1,329,371 1,376,160 Construction - commercial 50 176 — 638 638 864 559,127 559,991 Construction - commercial residential 1,366 494 — 11,213 11,213 13,073 166,230 179,303 Construction - other 88 — 416 193 609 697 59,997 60,694 Total Real estate - construction 1,504 670 416 12,044 12,460 14,634 785,354 799,988 Consumer - direct 1,687 567 2,203 — 2,203 4,457 94,262 98,719 Consumer - indirect 2,308 501 237 — 237 3,046 166,823 169,869 Total Consumer 3,995 1,068 2,440 — 2,440 7,503 261,085 268,588 Leasing and other and overdrafts 483 276 81 1,425 1,506 2,265 155,870 158,135 $ 40,194 $ 11,733 $ 15,291 $ 129,523 $ 144,814 $ 196,741 $ 13,641,861 $ 13,838,602 2014 30-59 60-89 ≥ 90 Days Non- Total ≥ 90 Total Past Current Total (in thousands) Real estate - commercial mortgage $ 14,399 $ 3,677 $ 800 $ 44,437 $ 45,237 $ 63,313 $ 5,133,842 $ 5,197,155 Commercial - secured 4,839 958 610 28,747 29,357 35,154 3,529,460 3,564,614 Commercial - unsecured 395 65 9 1,022 1,031 1,491 159,462 160,953 Total Commercial - industrial, financial and agricultural 5,234 1,023 619 29,769 30,388 36,645 3,688,922 3,725,567 Real estate - home equity 8,048 2,883 4,257 10,483 14,740 25,671 1,711,017 1,736,688 Real estate - residential mortgage 18,789 8,145 8,952 20,043 28,995 55,929 1,321,139 1,377,068 Construction - commercial — — — 2,604 2,604 2,604 424,815 427,419 Construction - commercial residential 160 — — 13,463 13,463 13,623 190,047 203,670 Construction - other — — 51 281 332 332 59,180 59,512 Total Real estate - construction 160 — 51 16,348 16,399 16,559 674,042 690,601 Consumer - direct 2,034 857 2,414 — 2,414 5,305 104,018 109,323 Consumer - indirect 2,156 418 176 — 176 2,750 153,358 156,108 Total Consumer 4,190 1,275 2,590 — 2,590 8,055 257,376 265,431 Leasing and other and overdrafts 357 166 133 — 133 656 118,550 119,206 $ 51,177 $ 17,169 $ 17,402 $ 121,080 $ 138,482 $ 206,828 $ 12,904,888 $ 13,111,716
Troubled Debt Restructurings on Financing Receivables	The following table presents TDRs as of December 31 : 2015 2014 (in thousands) Real-estate - residential mortgage $ 28,511 $ 31,308 Real-estate - commercial mortgage 17,563 18,822 Construction - commercial residential 3,942 9,241 Commercial - secured 5,833 5,170 Real estate - home equity 4,556 2,975 Commercial - unsecured 120 67 Consumer - direct 19 19 Consumer - indirect 14 19 Total accruing TDRs 60,558 67,621 Non-accrual TDRs (1) 31,035 24,616 Total TDRs $ 91,593 $ 92,237 (1) Included within non-accrual loans in the preceding table
Loan Terms Modified Under Troubled Debt Restructurings during The Period By Class Segment	The following table presents TDRs by class segment and type of concession for loans that were modified during the years ended December 31, 2015 and 2014: 2015 2014 Number of Loans Post-Modification Recorded Investment Number of Loans Post-Modification Recorded Investment (dollars in thousands) Commercial – secured: Extend maturity with rate concession 2 $ 127 3 $ 315 Extend maturity without rate concession 9 3,785 8 1,640 Commercial – unsecured: Extend maturity without rate concession 1 38 — — Real estate - commercial mortgage: Extend maturity with rate concession 5 2,014 1 60 Extend maturity without rate concession 4 639 7 6,781 Real estate - home equity: Extend maturity with rate concession 2 36 — — Extend maturity without rate concession 3 203 — — Bankruptcy 52 2,501 30 1,551 Real estate – residential mortgage: Extend maturity with rate concession 4 750 2 390 Extend maturity without rate concession 3 262 2 210 Bankruptcy 7 2,508 19 1,807 Construction - commercial residential: Extend maturity without rate concession 1 1,535 3 3,616 Consumer - direct: Bankruptcy 2 6 7 7 Consumer - indirect: Bankruptcy 1 12 4 20 Total 96 $ 14,416 86 $ 16,397
Schedule Of TDRs Modified Last 12 Months Which Had Payment Default In 2014	The following table presents TDRs, by class segment, as of December 31, 2015 and 2014 that were modified during the years ended December 31, 2015 and 2014 and had a post-modification payment default during their respective year of modification. The Corporation defines a payment default as a single missed scheduled payment: 2015 2014 Number of Loans Recorded Investment Number of Loans Recorded Investment (dollars in thousands) Construction - commercial residential — $ — 2 $ 1,803 Real estate - commercial mortgage 4 359 2 1,660 Real estate - residential mortgage 4 445 11 1,430 Commercial - secured 8 3,549 4 1,208 Real estate - home equity 13 763 11 961 Consumer - direct — — 1 1 Total 29 $ 5,116 31 $ 7,063

Premises and Equipment (Tables)

Premises and Equipment (Tables)	12 Months Ended
	Dec. 31, 2015
Property, Plant and Equipment [Abstract]
Summary of Premises and Equipment	The following is a summary of premises and equipment as of December 31 : 2015 2014 (in thousands) Land $ 37,380 $ 37,667 Buildings and improvements 297,018 287,271 Furniture and equipment 136,029 176,808 Construction in progress 16,585 21,055 487,012 522,801 Less: Accumulated depreciation and amortization (261,477 ) (296,774 ) $ 225,535 $ 226,027

Goodwill and Intangible Assets

Goodwill and Intangible Assets (Tables)	12 Months Ended
	Dec. 31, 2015
Goodwill and Intangible Assets Disclosure [Abstract]
Schedule of Goodwill	The following table summarizes the changes in goodwill: 2015 2014 2013 (in thousands) Balance at beginning of year $ 530,593 $ 530,607 $ 530,656 Other goodwill deductions — (14 ) (49 ) Balance at end of year $ 530,593 $ 530,593 $ 530,607
Schedule of Finite-Lived Intangible Assets by Major Class	The following table summarizes intangible assets as of December 31 : 2015 2014 Gross Accumulated Net Gross Accumulated Net (in thousands) Amortizing: Core deposit $ 50,279 $ (50,279 ) $ — $ 50,279 $ (50,054 ) $ 225 Other 9,123 (9,123 ) — 9,123 (9,101 ) 22 Total amortizing 59,402 (59,402 ) — 59,402 (59,155 ) 247 Non-amortizing 963 — 963 963 — 963 $ 60,365 $ (59,402 ) $ 963 $ 60,365 $ (59,155 ) $ 1,210

Mortgage Servicing Rights (Tabl

Mortgage Servicing Rights (Tables)	12 Months Ended
	Dec. 31, 2015
Transfers and Servicing [Abstract]
Summary of Changes in Mortgage Servicing Rights	The following table summarizes the changes in MSRs, which are included in other assets on the consolidated balance sheets: 2015 2014 (in thousands) Amortized cost: Balance at beginning of year $ 42,148 $ 42,452 Originations of mortgage servicing rights 6,166 5,047 Amortization expense (7,370 ) (5,351 ) Balance at end of year $ 40,944 $ 42,148
Schedule Of Servicing Assets Expected Amortization Expense	Estimated MSR amortization expense for the next five years, based on balances as of December 31, 2015 and the estimated remaining lives of the underlying loans, follows (in thousands): Year 2016 $ 10,681 2017 9,292 2018 7,774 2019 6,118 2020 4,316

Deposits (Tables)

Deposits (Tables)	12 Months Ended
	Dec. 31, 2015
Deposits [Abstract]
Schedule Of Deposits Liabilities	Deposits consisted of the following as of December 31 : 2015 2014 (in thousands) Noninterest-bearing demand $ 3,948,114 $ 3,640,623 Interest-bearing demand 3,451,207 3,150,612 Savings and money market accounts 3,868,046 3,504,820 Time deposits 2,864,950 3,071,451 $ 14,132,317 $ 13,367,506
Scheduled Maturities Of Time Deposits	The scheduled maturities of time deposits as of December 31, 2015 were as follows (in thousands): Year 2016 $ 1,342,716 2017 508,171 2018 239,480 2019 527,480 2020 163,559 Thereafter 83,544 $ 2,864,950

Short-Term Borrowings and Lon36

Short-Term Borrowings and Long-Term Debt (Tables)	12 Months Ended
	Dec. 31, 2015
Short-Term Borrowings and Long-Term Debt [Abstract]
Schedule of Short-term Debt	Short-term borrowings as of December 31, 2015 , 2014 and 2013 and the related maximum amounts outstanding at the end of any month in each of the three years then ended are presented below. The securities underlying the repurchase agreements remain in available for sale investment securities. December 31, Maximum Outstanding 2015 2014 2013 2015 2014 2013 (in thousands) Federal funds purchased $ 197,235 $ 6,219 $ 582,436 $ 266,338 $ 577,581 $ 848,179 Short-term FHLB advances (1) 110,000 70,000 400,000 200,000 600,000 600,000 Customer repurchase agreements 111,496 158,394 175,621 212,509 244,729 215,305 Customer short-term promissory notes 78,932 95,106 100,572 93,176 95,106 115,129 $ 497,663 $ 329,719 $ 1,258,629
Schedule of Repurchase Agreements	The following table presents information related to customer repurchase agreements: 2015 2014 2013 (dollars in thousands) Amount outstanding as of December 31 $ 111,496 $ 158,394 $ 175,621 Weighted average interest rate as of December 31 0.15 % 0.13 % 0.12 % Average amount outstanding during the year $ 161,093 $ 197,432 $ 186,851 Weighted average interest rate during the year 0.10 % 0.10 % 0.11 %
Schedule of Long-term Debt Instruments	FHLB advances with an original maturity of one year or more and long-term debt included the following as of December 31 : 2015 2014 (in thousands) FHLB advances $ 587,756 $ 673,107 Subordinated debt 350,000 300,000 Junior subordinated deferrable interest debentures 16,496 171,136 Unamortized discounts and issuance costs (4,710 ) (4,830 ) $ 949,542 $ 1,139,413
Schedule of Maturities of Long-term Debt	The following table summarizes the scheduled maturities of FHLB advances with an original maturity of one year or more and long-term debt as of December 31, 2015 (in thousands): Year 2016 $ 235,937 2017 114,539 2018 — 2019 186,760 2020 142,370 Thereafter 269,936 $ 949,542
Schedule of Subordinated Borrowing	The following table provides details of the debentures as of December 31, 2015 (dollars in thousands): Debentures Issued to Fixed/ Interest Amount Maturity Callable Call Price Columbia Bancorp Statutory Trust Variable 2.88 % $ 6,186 06/30/34 03/31/16 100.0 Columbia Bancorp Statutory Trust II Variable 2.40 % 4,124 03/15/35 03/15/16 100.0 Columbia Bancorp Statutory Trust III Variable 2.28 % 6,186 06/15/35 03/15/16 100.0 $ 16,496

Derivative Financial Instrume37

Derivative Financial Instruments (Tables)	12 Months Ended
	Dec. 31, 2015
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Summary of Notion Amoutns and Fair Values of Derivative Financial Instruments	The following table presents the notional amounts and fair values of derivative financial instruments as of December 31 : 2015 2014 Notional Asset Notional Asset (in thousands) Interest Rate Locks with Customers Positive fair values $ 87,781 $ 1,291 $ 89,655 $ 1,391 Negative fair values 267 (16 ) 301 (6 ) Net interest rate locks with customers 1,275 1,385 Forward Commitments Positive fair values 69,045 205 — — Negative fair values 16,193 (24 ) 93,802 (1,164 ) Net forward commitments 181 (1,164 ) Interest Rate Swaps with Customers Positive fair values 846,490 32,915 468,080 19,716 Negative fair values 8,757 (55 ) 25,418 (198 ) Net interest rate swaps with customers 32,860 19,518 Interest Rate Swaps with Dealer Counterparties Positive fair values 8,757 55 25,418 198 Negative fair values 846,490 (32,915 ) 468,080 (19,716 ) Net interest rate swaps with dealer counterparties (32,860 ) (19,518 ) Foreign Exchange Contracts with Customers Positive fair values 4,897 114 11,616 810 Negative fair values 8,050 (184 ) 5,250 (441 ) Net foreign exchange contracts with customers (70 ) 369 Foreign Exchange Contracts with Correspondent Banks Positive fair values 9,728 428 5,287 446 Negative fair values 6,899 (147 ) 13,572 (876 ) Net foreign exchange contracts with correspondent banks 281 (430 ) Net derivative fair value asset $ 1,667 $ 160
Summary of Fair Value Gains and Losses on Derivative Financial Instruments	The following table presents the fair value gains and losses on derivative financial instruments for the years ended December 31: 2015 2014 2013 Statement of Income Classification (in thousands) Interest rate locks with customers $ (110 ) $ 577 $ (5,949 ) Mortgage banking income Forward commitments 1,345 (2,422 ) 1,466 Mortgage banking income Interest rate swaps with customers 13,342 20,406 (7,978 ) Other non-interest expense Interest rate swaps with counterparties (13,342 ) (20,406 ) 7,978 Other non-interest expense Foreign exchange contracts with customers (439 ) 688 (108 ) Other service charges and fees Foreign exchange contracts with correspondent banks 711 (880 ) 507 Other service charges and fees Net fair value gains (losses) on derivative financial instruments $ 1,507 $ (2,037 ) $ (4,084 )
Fair Value, Option, Qualitative Disclosures Related to Election	The Corporation has elected to record mortgage loans held for sale at fair value. The following table presents a summary of mortgage loans held for sale and the impact of the fair value election on the consolidated financial statements as of and for the years ended December 31, 2015 and 2014 : Cost (1) Fair Value Balance Sheet Fair Value (Loss) Gain Statement of Income Classification (in thousands) December 31, 2015: Mortgage loans held for sale $ 16,584 $ 16,886 Loans held for sale $ (140 ) Mortgage banking income December 31, 2014: Mortgage loans held for sale 17,080 17,522 Loans held for sale 263 Mortgage banking income (1) Cost basis of mortgage loans held for sale represents the unpaid principal balance.
Offsetting Assets and Liabilities	The following table presents the financial instruments that are eligible for offset, and the effects of offsetting, on the consolidated balance sheets as of December 31: Gross Amounts Gross Amounts Not Offset Recognized on the Consolidated on the Balance Sheets Consolidated Financial Cash Net Balance Sheets Instruments (1) Collateral (2) Amount (in thousands) 2015 Interest rate swap derivative assets $ 32,970 $ (55 ) $ — $ 32,915 Foreign exchange derivative assets with correspondent banks 428 (147 ) — 281 Total $ 33,398 $ (202 ) $ — $ 33,196 Interest rate swap liabilities $ 32,970 $ (55 ) $ (31,130 ) $ 1,785 Foreign exchange derivative liabilities with correspondent banks 147 (147 ) — — Total $ 33,117 $ (202 ) $ (31,130 ) $ 1,785 2014 Interest rate swap derivative assets $ 19,914 $ (206 ) $ — $ 19,708 Foreign exchange derivative assets with correspondent banks 446 (446 ) — — Total $ 20,360 $ (652 ) $ — $ 19,708 Interest rate swap liabilities $ 19,914 $ (206 ) $ (19,210 ) $ 498 Foreign exchange derivative liabilities with correspondent banks 876 (446 ) (310 ) 120 Total $ 20,790 $ (652 ) $ (19,520 ) $ 618 (1) For interest rate swap assets, amounts represent any derivative liability fair values that could be offset in the event of counterparty or customer default. For interest rate swap liabilities, amounts represent any derivative asset fair values that could be offset in the event of counterparty or customer default. (2) Amounts represent cash collateral posted on interest rate swap transactions with financial institution counterparties. Interest rate swaps with customers are collateralized by the underlying loans to those borrowers.

Regulatory Matters (Tables)

Regulatory Matters (Tables)	12 Months Ended
	Dec. 31, 2015
Regulatory Matters [Abstract]
Schedule of Compliance with Regulatory Capital Requirements	The following table presents the Total risk-based, Tier I risk-based, Common Equity Tier I risk-based and Tier I leverage requirements for the Corporation and its four significant subsidiaries, Fulton Bank, N.A., Fulton Bank of New Jersey, The Columbia Bank and Lafayette Ambassador Bank with total assets in excess of $1 billion , as of December 31, 2015, under the U.S. Basel III Capital Rules: 2015 Actual For Capital Well Capitalized Amount Ratio Amount Ratio Amount Ratio (dollars in thousands) Total Capital (to Risk-Weighted Assets): Corporation $ 1,997,926 13.2 % $ 1,214,868 8.0 % N/A N/A Fulton Bank, N.A. 1,088,709 12.2 714,734 8.0 $ 893,418 10.0 % Fulton Bank of New Jersey 373,465 12.6 236,691 8.0 295,864 10.0 The Columbia Bank 211,355 13.7 123,260 8.0 154,075 10.0 Lafayette Ambassador Bank 172,345 14.1 97,792 8.0 122,240 10.0 Tier I Capital (to Risk-Weighted Assets): Corporation $ 1,544,495 10.2 % $ 911,151 6.0 % N/A N/A Fulton Bank, N.A 1,000,603 11.2 536,051 6.0 $ 714,734 8.0 % Fulton Bank of New Jersey 336,319 11.4 177,518 6.0 236,691 8.0 The Columbia Bank 192,090 12.5 92,445 6.0 123,260 8.0 Lafayette Ambassador Bank 162,092 13.3 73,344 6.0 97,792 8.0 Common Equity Tier I Capital (to Risk-weighted Assets): Corporation $ 1,541,214 10.2 % $ 683,363 4.5 % N/A N/A Fulton Bank, N.A 956,603 10.7 402,038 4.5 $ 580,721 6.5 % Fulton Bank of New Jersey 336,319 11.4 133,139 4.5 192,311 6.5 The Columbia Bank 192,090 12.5 69,334 4.5 100,149 6.5 Lafayette Ambassador Bank 162,092 13.3 55,008 4.5 79,456 6.5 Tier I Capital (to Average Assets): Corporation $ 1,544,495 9.0 % $ 688,500 4.0 % N/A N/A Fulton Bank, N.A 1,000,603 10.2 391,783 4.0 $ 489,729 5.0 % Fulton Bank of New Jersey 336,319 9.5 141,257 4.0 176,572 5.0 The Columbia Bank 192,090 9.7 79,618 4.0 99,523 5.0 Lafayette Ambassador Bank 162,092 11.0 59,152 4.0 73,940 5.0 N/A – Not applicable as "well capitalized" applies to banks only. The following table presents the Total risk-based, Tier I risk-based and Tier I leverage requirements as of December 31, 2014, under the capital standards in existence prior to the U.S. Basel III Capital Rules: 2014 Actual For Capital Well Capitalized Amount Ratio Amount Ratio Amount Ratio (dollars in thousands) Total Capital (to Risk-Weighted Assets): Corporation $ 1,970,569 14.7 % $ 1,076,013 8.0 % N/A N/A Fulton Bank, N.A. 1,065,445 13.2 643,791 8.0 $ 804,739 10.0 % Fulton Bank of New Jersey 347,235 13.1 211,823 8.0 264,779 10.0 The Columbia Bank 203,109 13.5 119,934 8.0 149,917 10.0 Lafayette Ambassador Bank 167,800 15.9 84,407 8.0 105,508 10.0 Tier I Capital (to Risk-Weighted Assets): Corporation $ 1,655,853 12.3 $ 538,007 4.0 % N/A N/A Fulton Bank, N.A 977,547 12.1 321,896 4.0 $ 482,843 6.0 % Fulton Bank of New Jersey 313,843 11.9 105,911 4.0 158,867 6.0 The Columbia Bank 184,331 12.3 59,967 4.0 89,950 6.0 Lafayette Ambassador Bank 154,817 14.7 42,203 4.0 63,305 6.0 Tier I Capital (to Average Assets): Corporation $ 1,655,853 10.0 $ 663,421 4.0 % N/A N/A Fulton Bank, N.A 977,547 10.5 373,288 4.0 $ 466,610 5.0 % Fulton Bank of New Jersey 313,843 9.4 133,580 4.0 166,975 5.0 The Columbia Bank 184,331 9.4 78,186 4.0 97,733 5.0 Lafayette Ambassador Bank 154,817 10.8 57,132 4.0 71,416 5.0 N/A – Not applicable as "well capitalized" applies to banks only.

Income Taxes (Tables)

Income Taxes (Tables)	12 Months Ended
	Dec. 31, 2015
Income Tax Disclosure [Abstract]
Schedule of Components of Income Tax Expense (Benefit)	The components of the provision for income taxes are as follows: 2015 2014 2013 (in thousands) Current tax expense: Federal $ 34,455 $ 32,957 $ 38,573 State 2,042 1,126 687 36,497 34,083 39,260 Deferred tax expense (benefit): Federal 12,752 18,523 15,357 State 672 — (3,532 ) 13,424 18,523 11,825 Income tax expense $ 49,921 $ 52,606 $ 51,085
Schedule of Effective Income Tax Rate Reconciliation	The differences between the effective income tax rate and the federal statutory income tax rate are as follows: 2015 2014 2013 Statutory tax rate 35.0 % 35.0 % 35.0 % Tax-exempt income (6.0 ) (5.4 ) (5.2 ) Tax Credit Investments (5.2 ) (4.9 ) (4.9 ) Change in valuation allowance (0.9 ) (0.8 ) (2.0 ) Bank owned life insurance (0.6 ) (0.5 ) (0.5 ) State income taxes, net of federal benefit 1.9 1.2 1.1 Executive compensation 0.1 0.1 0.1 Other, net 0.7 (0.3 ) 0.4 Effective income tax rate 25.0 % 24.4 % 24.0 %
Schedule of Deferred Tax Assets and Liabilities	The net deferred tax asset recorded by the Corporation is included in other assets and consists of the following tax effects of temporary differences as of December 31 : 2015 2014 (in thousands) Deferred tax assets: Allowance for credit losses $ 62,846 $ 68,407 Postretirement and defined benefit plans 13,070 16,017 Deferred compensation 11,839 12,486 State loss carryforwards 11,170 12,960 Other accrued expenses 7,142 7,335 Other-than-temporary impairment of investments 5,501 8,126 Unrealized holding losses on securities available for sale 3,250 — Other 10,165 8,433 Total gross deferred tax assets 124,983 133,764 Deferred tax liabilities: Direct leasing 20,309 12,399 Mortgage servicing rights 14,582 15,004 Acquisition premiums/discounts 8,897 8,200 Premises and equipment 5,955 7,897 Intangible assets 1,614 1,382 Unrealized holding gains on securities available for sale — 3,949 Other 9,593 7,960 Total gross deferred tax liabilities 60,950 56,791 Net deferred tax asset, before valuation allowance 64,033 76,973 Valuation allowance (8,359 ) (10,187 ) Net deferred tax asset $ 55,674 $ 66,786
Summary of Income Tax Contingencies	The following summarizes the changes in unrecognized tax benefits for the years ended December 31 : 2015 2014 2013 (in thousands) Balance at beginning of year $ 1,944 $ 1,651 $ 1,453 Prior period tax positions — 188 — Current period tax positions 492 269 318 Lapse of statute of limitations (63 ) (164 ) (120 ) Balance at end of year $ 2,373 $ 1,944 $ 1,651

Employee Benefit Plans (Tables)

Employee Benefit Plans (Tables)	12 Months Ended
	Dec. 31, 2015
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Schedule of Costs of Retirement Plans	The following summarizes the Corporation’s expense under its retirement plans for the years ended December 31 : 2015 2014 2013 (in thousands) 401(k) Retirement Plan $ 6,423 $ 8,643 $ 11,807 Pension Plan 4,102 1,514 2,477 $ 10,525 $ 10,157 $ 14,284
Pension Plans
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Summary of Pension Plan and Postretirement Plan Net Periodic Benefit Cost	The net periodic pension cost for the Pension Plan, as determined by consulting actuaries, consisted of the following components for the years ended December 31 : 2015 2014 2013 (in thousands) Service cost (1) $ 579 $ 367 $ 202 Interest cost 3,405 3,413 3,087 Expected return on assets (3,009 ) (3,240 ) (3,194 ) Net amortization and deferral 3,127 974 2,382 Net periodic pension cost $ 4,102 $ 1,514 $ 2,477 (1) The Pension Plan was curtailed effective January 1, 2008. Pension plan service cost for all years presented was related to administrative costs associated with the plan and not due to the accrual of additional participant benefits.
Schedule of Changes in Accumulated Postemployment Benefit Obligations	The following table summarizes the changes in the projected benefit obligation and fair value of plan assets for the plan years ended December 31 : 2015 2014 (in thousands) Projected benefit obligation at beginning of year $ 93,079 $ 73,362 Service cost 579 367 Interest cost 3,405 3,413 Benefit payments (3,904 ) (5,164 ) Change due to change in assumptions (7,722 ) 22,055 Experience gain (701 ) (954 ) Projected benefit obligation at end of year $ 84,736 $ 93,079 Fair value of plan assets at beginning of year $ 51,730 $ 55,448 Actual return on assets (855 ) 1,446 Benefit payments (3,904 ) (5,164 ) Fair value of plan assets at end of year $ 46,971 $ 51,730
Schedule of Net Funded Status	The following table presents the funded status of the Pension Plan, included in other liabilities on the consolidated balance sheets, as of December 31 : 2015 2014 (in thousands) Projected benefit obligation $ (84,736 ) $ (93,079 ) Fair value of plan assets 46,971 51,730 Funded status $ (37,765 ) $ (41,349 )
Schedule Of Changes In Unrecognized Pension And Postretirement Items	The following table summarizes the changes in the unrecognized net loss included as a component of accumulated other comprehensive loss: Unrecognized Net Loss Gross of tax Net of tax (in thousands) Balance as of December 31, 2013 $ 16,161 $ 10,505 Recognized as a component of 2014 periodic pension cost (974 ) (633 ) Unrecognized losses arising in 2014 22,895 14,882 Balance as of December 31, 2014 38,082 24,754 Recognized as a component of 2015 periodic pension cost (3,127 ) (2,033 ) Unrecognized gains arising in 2015 (4,559 ) (2,963 ) Balance as of December 31, 2015 $ 30,396 $ 19,758
Schedule Of Rates Used To Calculate Net Periodic Pension Costs And Present Value Of Benefit Obligations	The following rates were used to calculate net periodic pension cost and the present value of benefit obligations as of December 31 : 2015 2014 2013 Discount rate-projected benefit obligation 4.25 % 3.75 % 4.75 % Expected long-term rate of return on plan assets 6.00 % 6.00 % 6.00 %
Schedule of Allocation of Plan Assets	The following table presents a summary of the fair values of the Pension Plan’s assets as of December 31 : 2015 2014 Estimated % of Total Estimated % of Total (dollars in thousands) Equity mutual funds $ 8,269 $ 8,503 Equity common trust funds 6,350 6,018 Equity securities 14,619 31.1 % 14,521 28.1 % Cash and money market funds 8,196 8,957 Fixed income mutual funds 9,578 9,845 Corporate debt securities 3,749 4,971 U.S. Government agency securities 2,881 3,856 Fixed income securities and cash 24,404 52.0 % 27,629 53.4 % Other alternative investment funds 7,948 16.9 % 9,580 18.5 % $ 46,971 100.0 % $ 51,730 100.0 %
Schedule of Expected Benefit Payments	Estimated future benefit payments are as follows (in thousands): Year 2016 $ 3,125 2017 3,367 2018 3,727 2019 3,838 2020 4,227 2021 – 2025 23,903 $ 42,187
Other Postretirement Benefit Plans
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Summary of Pension Plan and Postretirement Plan Net Periodic Benefit Cost	The components of the expense for postretirement benefits other than pensions are as follows: 2015 2014 2013 (in thousands) Service cost $ — $ 15 $ 228 Interest cost 206 206 322 Expected return on plan assets — — (1 ) Net amortization and deferral (258 ) (347 ) (363 ) Net postretirement benefit cost $ (52 ) $ (126 ) $ 186
Schedule of Changes in Accumulated Postemployment Benefit Obligations	The following table summarizes the changes in the accumulated postretirement benefit obligation and fair value of plan assets for the years ended December 31 : 2015 2014 (in thousands) Accumulated postretirement benefit obligation at beginning of year $ 5,552 $ 8,169 Service cost — 15 Interest cost 206 206 Benefit payments (251 ) (209 ) Experience gain 189 (532 ) Change due to change in assumptions (2,821 ) 1,261 Effect of curtailment — (3,358 ) Accumulated postretirement benefit obligation at end of year $ 2,875 $ 5,552 Fair value of plan assets at beginning of year $ 8 $ 23 Employer contributions 258 194 Benefit payments (251 ) (209 ) Fair value of plan assets at end of year $ 15 $ 8
Schedule of Net Funded Status	The following table presents the funded status of the Postretirement Plan, included in other liabilities on the consolidated balance sheets as of December 31 : 2015 2014 (in thousands) Accumulated postretirement benefit obligation $ (2,875 ) $ (5,552 ) Fair value of plan assets 15 8 Funded status $ (2,860 ) $ (5,544 )
Schedule Of Changes In Unrecognized Pension And Postretirement Items	The following table summarizes the changes in items recognized as a component of accumulated other comprehensive loss: Gross of tax Unrecognized Unrecognized Total Net of tax (in thousands) Balance as of December 31, 2013 $ (1,484 ) $ (1,137 ) $ (2,621 ) $ (1,704 ) Recognized as a component of 2014 postretirement benefit cost, prior to curtailment 32 10 42 26 Unrecognized gains arising in 2014, prior to curtailment — (313 ) (313 ) (203 ) Curtailment gain 1,452 — 1,452 944 Recognized as a component of 2014 postretirement benefit cost, after curtailment 235 70 305 199 Unrecognized gains arising in 2014, after curtailment (3,358 ) 1,034 (2,324 ) (1,511 ) Balance as of December 31, 2014 (3,123 ) (336 ) (3,459 ) (2,249 ) Recognized as a component of 2015 postretirement benefit cost 258 — 258 168 Unrecognized gains arising in 2015 (2,469 ) (172 ) (2,641 ) (1,717 ) Balance as of December 31, 2015 $ (5,334 ) $ (508 ) $ (5,842 ) $ (3,798 )
Schedule Of Rates Used To Calculate Net Periodic Pension Costs And Present Value Of Benefit Obligations	The following rates were used to calculate net periodic postretirement benefit cost and the present value of benefit obligations as of December 31 : 2015 2014 2013 Discount rate-projected benefit obligation 4.25 % 3.75 % 4.75 % Expected long-term rate of return on plan assets 3.00 % 3.00 % 3.00 %
Schedule of Expected Benefit Payments	Estimated future benefit payments under the Postretirement Plan are as follows (in thousands): Year 2016 $ 342 2017 317 2018 296 2019 275 2020 255 2021 – 2025 995 $ 2,480

Shareholders' Equity (Tables)

Shareholders' Equity (Tables)	12 Months Ended
	Dec. 31, 2015
Accumulated Other Comprehensive Income [Abstract]
Schedule of Comprehensive Income (Loss)	Accumulated Other Comprehensive Income (Loss) The following table presents the components of other comprehensive income (loss) for the years ended December 31 : Before-Tax Amount Tax Effect Net of Tax Amount (in thousands) 2015: Unrealized loss on securities $ (11,872 ) $ 4,155 $ (7,717 ) Reclassification adjustment for securities gains included in net income (1) (9,066 ) 3,174 (5,892 ) Reclassification adjustment for loss on derivative financial instruments included in net income (2) 3,778 (1,322 ) 2,456 Non-credit related unrealized gains on other-than-temporarily impaired debt securities 368 (129 ) 239 Unrealized gain on derivative financial instruments 115 (40 ) 75 Unrecognized pension and postretirement cost 7,200 (2,520 ) 4,680 Amortization of net unrecognized pension and postretirement income (3) 2,869 (1,005 ) 1,864 Total Other Comprehensive Loss $ (6,608 ) $ 2,313 $ (4,295 ) 2014: Unrealized gain on securities $ 51,901 $ (18,167 ) $ 33,734 Reclassification adjustment for securities gains included in net income (1) (2,041 ) 714 (1,327 ) Non-credit related unrealized gains on other-than-temporarily impaired debt securities 1,200 (420 ) 780 Unrealized gain on derivative financial instruments 209 (73 ) 136 Reclass adjustment for postretirement plan gain included in net income (3) (1,452 ) 508 (944 ) Unrecognized pension and postretirement income (20,258 ) 7,090 (13,168 ) Amortization of net unrecognized pension and postretirement income (3) 627 (219 ) 408 Total Other Comprehensive Income $ 30,186 $ (10,567 ) $ 19,619 2013: Unrealized loss on securities $ (76,319 ) $ 26,712 $ (49,607 ) Reclassification adjustment for securities gains included in net income (1) (8,004 ) 2,801 (5,203 ) Non-credit related unrealized gains on other-than-temporarily impaired debt securities 3,042 (1,065 ) 1,977 Unrealized gain on derivative financial instruments 209 (73 ) 136 Unrecognized pension and postretirement cost 12,875 (4,506 ) 8,369 Amortization of net unrecognized pension and postretirement income (3) $ 2,019 $ (707 ) $ 1,312 Total Other Comprehensive Loss $ (66,178 ) $ 23,162 $ (43,016 ) (1) Amounts reclassified out of accumulated other comprehensive loss. Before-tax amounts included in "Investment securities gains, net" on the consolidated statements of income. See "Note 3 - Investment Securities," for additional details. (2) Amount reclassified out of accumulated other comprehensive loss. Before-tax amount included in "Loss on redemption of trust preferred securities" on the consolidated statements of income. See "Note 9 - Short-Term Borrowings and Long-Term Debt," for additional details. (3) Amounts reclassified out of accumulated other comprehensive loss. Before-tax amounts included in "Salaries and employee benefits" on the consolidated statements of income. See "Note 13 - Employee Benefit Plans," for additional details.
Schedule of Accumulated Other Comprehensive Income (Loss)	The following table presents changes in each component of accumulated other comprehensive income (loss), net of tax, for the years ended December 31 : Unrealized Gain (Losses) on Investment Securities Not Other-Than-Temporarily Impaired Unrealized Non-Credit Gains (Losses) on Other-Than-Temporarily Impaired Debt Securities Unrecognized Pension and Postretirement Plan Income (Cost) Unrealized Effective Portions of Losses on Forward-Starting Interest Rate Swaps Total (in thousands) Balance as of December 31, 2012 $ 26,362 $ 613 $ (18,482 ) $ (2,818 ) $ 5,675 Other comprehensive income (loss) before reclassifications (49,607 ) 1,977 8,369 — (39,261 ) Amounts reclassified from accumulated other comprehensive income (loss) (4,265 ) (938 ) 1,312 136 (3,755 ) Balance as of December 31, 2013 (27,510 ) 1,652 (8,801 ) (2,682 ) (37,341 ) Other comprehensive income (loss) before reclassifications 33,734 780 (14,112 ) — 20,402 Amounts reclassified from accumulated other comprehensive income (loss) (244 ) (1,083 ) 408 136 (783 ) Balance as of December 31, 2014 5,980 1,349 (22,505 ) (2,546 ) (17,722 ) Other comprehensive income (loss) before reclassifications (7,717 ) 239 4,680 — (2,798 ) Amounts reclassified from accumulated other comprehensive income (loss) (4,762 ) (1,130 ) 1,864 75 (3,953 ) Reclassification adjustment for loss on derivative financial instruments — — — 2,456 2,456 Balance as of December 31, 2015 $ (6,499 ) $ 458 $ (15,961 ) $ (15 ) $ (22,017 )

Stock-Based Compensation Plans

Stock-Based Compensation Plans (Tables)	12 Months Ended
	Dec. 31, 2015
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Schedule of Employee Service Share-based Compensation, Allocation of Recognized Period Costs	The following table presents compensation expense and related tax benefits for all equity awards recognized in the consolidated statements of income: 2015 2014 2013 (in thousands) Compensation expense $ 5,938 $ 5,865 $ 5,330 Tax benefit (2,011 ) (1,608 ) (1,475 ) Stock-based compensation, net of tax $ 3,927 $ 4,257 $ 3,855
Schedule of Unrecognized Compensation Cost, Nonvested Awards	The following table presents compensation expense and related tax benefits for restricted stock awards, RSUs and PSUs recognized in the consolidated statements of income, and included as a component of total stock-based compensation in the preceding table: 2015 2014 2013 (in thousands) Compensation expense $ 4,646 $ 4,345 $ 3,705 Tax benefit (1,626 ) (1,510 ) (1,297 ) Restricted stock compensation, net of tax $ 3,020 $ 2,835 $ 2,408
Schedule of Share-based Compensation, Stock Options, Activity	The following table provides information about stock option activity for the year ended December 31, 2015 : Stock Weighted Weighted Aggregate Outstanding as of December 31, 2014 4,302,464 $ 12.89 Exercised (490,151 ) 10.21 Forfeited (83,878 ) 14.09 Expired (748,348 ) 16.80 Outstanding as of December 31, 2015 2,980,087 $ 12.31 4.1 years $ 4.6 Exercisable as of December 31, 2015 2,630,235 $ 12.34 3.6 years $ 4.3
Schedule of Nonvested Share Activity	The following table provides information about nonvested stock options, restricted stock, RSUs and PSUs granted under the Employee Equity Plan and Directors' Plan for the year ended December 31, 2015 : Nonvested Stock Options Restricted Stock/RSUs/PSUs Options Weighted Shares Weighted Nonvested as of December 31, 2014 755,964 $ 2.68 1,063,087 $ 11.83 Granted — — 581,719 12.04 Vested (393,862 ) 2.56 (250,807 ) 10.48 Forfeited (12,250 ) 2.77 (5,610 ) 12.05 Nonvested as of December 31, 2015 349,852 $ 2.82 1,388,389 $ 12.16
Schedule Of Options Exercised	The following table presents information about stock options exercised: 2015 2014 2013 (dollars in thousands) Number of options exercised 490,151 215,047 451,102 Total intrinsic value of options exercised $ 1,442 $ 568 $ 1,612 Cash received from options exercised $ 4,936 $ 2,068 $ 3,650 Tax deduction realized from options exercised $ 1,389 $ 530 $ 1,416
Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions	The fair value of certain PSUs with market-based performance conditions granted in 2015 under the Employee Equity Plan was estimated on the grant date using the Monte Carlo valuation methodology performed by a third-party valuation expert. This valuation is dependent upon certain assumptions, as summarized in the following table: Risk-free interest rate 0.86 % Volatility of Corporation’s stock 20.08 % Expected life of PSUs 3 Years The fair value of stock option awards under the Employee Equity Plan was estimated on the grant date using the Black-Scholes valuation methodology, which is dependent upon certain assumptions, as summarized in the table below. No options were granted in 2015 under the Employee Equity Plan. 2014 2013 Risk-free interest rate 2.44 % 1.27 % Volatility of Corporation’s stock 28.05 % 27.64 % Expected dividend yield 2.36 % 2.48 % Expected life of options 7 Years 7 Years
Schedule of Share-based Payment Award, Employee Stock Purchase Plan, Valuation Assumptions	The following table summarizes activity under the ESPP: 2015 2014 2013 ESPP shares purchased 121,890 132,640 141,608 Average purchase price per share (85% of market value) $ 10.86 $ 10.31 $ 10.02 Compensation expense recognized (in thousands) $ 234 $ 241 $ 251

Leases (Tables)

Leases (Tables)	12 Months Ended
	Dec. 31, 2015
Leases [Abstract]
Schedule of Future Minimum Rental Payments for Operating Leases	Future minimum payments as of December 31, 2015 under non-cancelable operating leases with initial terms exceeding one year are as follows (in thousands): Year 2016 $ 16,325 2017 15,487 2018 13,046 2019 10,995 2020 9,836 Thereafter 46,819 $ 112,508

Commitments and Contingencies (

Commitments and Contingencies (Tables)	12 Months Ended
	Dec. 31, 2015
Commitments and Contingencies Disclosure [Abstract]
Summary of Outstanding Commitments to Extend Credit and Letters of Credit	The following table presents commitments to extend credit and letters of credit: 2015 2014 (in thousands) Commercial and other $ 3,518,960 $ 2,972,105 Home equity 1,300,062 1,291,596 Commercial mortgage and construction 965,116 558,662 Total commitments to extend credit $ 5,784,138 $ 4,822,363 Standby letters of credit $ 374,729 $ 382,465 Commercial letters of credit 39,529 32,304 Total letters of credit $ 414,258 $ 414,769

Fair Value Measurements (Tables

Fair Value Measurements (Tables)	12 Months Ended
	Dec. 31, 2015
Fair Value Disclosures [Abstract]
Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis	The following tables summarizes the Corporation’s assets and liabilities measured at fair value on a recurring basis and reported on the consolidated balance sheets as of December 31: 2015 Level 1 Level 2 Level 3 Total (in thousands) Mortgage loans held for sale $ — $ 16,886 $ — $ 16,886 Available for sale investment securities: Equity securities 21,514 — — 21,514 U.S. Government sponsored agency securities — 25,136 — 25,136 State and municipal securities — 262,765 — 262,765 Corporate debt securities — 93,619 3,336 96,955 Collateralized mortgage obligations — 821,509 — 821,509 Mortgage-backed securities — 1,158,835 — 1,158,835 Auction rate securities — — 98,059 98,059 Total available for sale investment securities 21,514 2,361,864 101,395 2,484,773 Other assets 16,129 34,465 — 50,594 Total assets $ 37,643 $ 2,413,215 $ 101,395 $ 2,552,253 Other liabilities $ 15,914 $ 33,010 $ — $ 48,924 2014 Level 1 Level 2 Level 3 Total (in thousands) Mortgage loans held for sale $ — $ 17,522 $ — $ 17,522 Available for sale investment securities: Equity securities 47,623 — — 47,623 U.S. Government securities — 200 — 200 U.S. Government sponsored agency securities — 214 — 214 State and municipal securities — 245,215 — 245,215 Corporate debt securities — 90,126 7,908 98,034 Collateralized mortgage obligations — 902,313 — 902,313 Mortgage-backed securities — 928,831 — 928,831 Auction rate securities — — 100,941 100,941 Total available for sale investment securities 47,623 2,166,899 108,849 2,323,371 Other assets 17,682 21,305 — 38,987 Total assets $ 65,305 $ 2,205,726 $ 108,849 $ 2,379,880 Other liabilities $ 17,737 $ 21,084 $ — $ 38,821
Schedule of Changes in Assets and Liabilities Measured at Fair Value on a Recurring Basis using Level 3 Inputs	The following table presents the changes in available for sale investment securities measured at fair value on a recurring basis using unobservable inputs (Level 3) for the years ended December 31 : Pooled Trust Single-issuer ARCs (in thousands) Balance as of December 31, 2013 $ 5,306 $ 3,781 $ 159,274 Realized adjustments to fair value (1) (18 ) — — Unrealized adjustments to fair value (2) 923 32 3,970 Sales (1,888 ) — (11,912 ) Settlements - calls (239 ) — (51,212 ) Discount accretion (3) 4 7 821 Balance as of December 31, 2014 4,088 3,820 100,941 Sales (3,633 ) — — Unrealized adjustments to fair value (2) 366 (230 ) (903 ) Settlements - calls (117 ) (970 ) (2,446 ) Discount accretion (3) 2 10 467 Balance as of December 31, 2015 $ 706 $ 2,630 $ 98,059 (1) Realized adjustments to fair value represent credit related other-than-temporary impairment charges and gains on sales of investment securities, both included as components of investment securities gains on the consolidated statements of income. (2) Pooled trust preferred securities, single-issuer trust preferred securities and ARCs are classified as available for sale investment securities; as such, the unrealized adjustment to fair value was recorded as an unrealized holding gain (loss) and included as a component of available for sale investment securities on the consolidated balance sheets. (3) Included as a component of net interest income on the consolidated statements of income.
Fair Value, Assets and Liabilities Measured on Nonrecurring Basis	The following table presents the Corporation's financial assets measured at fair value on a nonrecurring basis and reported on the consolidated balance sheets at December 31 : 2015 Level 1 Level 2 Level 3 Total (in thousands) Net loans $ — $ — $ 138,491 $ 138,491 Other financial assets — — 52,043 52,043 Total assets $ — $ — $ 190,534 $ 190,534 2014 Level 1 Level 2 Level 3 Total (in thousands) Net loans $ — $ — $ 127,834 $ 127,834 Other financial assets — — 54,170 54,170 Total assets $ — $ — $ 182,004 $ 182,004
Details of Book Value and Fair Value of Financial Instruments	As required by FASB ASC Section 825-10-50, the following table details the book values and the estimated fair values of the Corporation’s financial instruments as of December 31, 2015 and 2014 . A general description of the methods and assumptions used to estimate such fair values is also provided. 2015 2014 Book Value Estimated Book Value Estimated (in thousands) FINANCIAL ASSETS Cash and due from banks $ 101,120 $ 101,120 $ 105,702 $ 105,702 Interest-bearing deposits with other banks 230,300 230,300 358,130 358,130 Federal Reserve Bank and FHLB stock 62,216 62,216 64,953 64,953 Loans held for sale (1) 16,886 16,886 17,522 17,522 Securities available for sale (1) 2,484,773 2,484,773 2,323,371 2,323,371 Loans, net of unearned income (1) 13,838,602 13,709,957 13,111,716 13,030,543 Accrued interest receivable 42,767 42,767 41,818 41,818 Other financial assets (1) 166,920 166,920 169,764 169,764 FINANCIAL LIABILITIES Demand and savings deposits $ 11,267,367 $ 11,267,367 $ 10,296,055 $ 10,296,055 Time deposits 2,864,950 2,862,868 3,071,451 3,069,883 Short-term borrowings 497,663 497,663 329,719 329,719 Accrued interest payable 10,724 10,724 18,045 18,045 Other financial liabilities (1) 190,927 190,927 172,786 172,786 FHLB advances and long-term debt 949,542 959,315 1,139,413 1,142,980 (1) These financial instruments, or certain financial instruments within these categories, are measured at fair value on the Corporation’s consolidated balance sheets. Descriptions of the fair value determinations for these financial instruments are disclosed above.

Condensed Financial Informati46

Condensed Financial Information - Parent Company Only (Tables)	12 Months Ended
	Dec. 31, 2015
Condensed Financial Information of Parent Company Only Disclosure [Abstract]
Condensed Financial Information Parent Only	CONDENSED BALANCE SHEETS (in thousands) December 31 December 31 2015 2014 2015 2014 ASSETS LIABILITIES AND EQUITY Cash $ — $ 137 Long-term debt $ 361,504 $ 465,936 Other assets 4,337 10,053 Payable to non-bank subsidiaries 188,087 84,676 Receivable from subsidiaries 29,249 29,120 Other liabilities 77,263 81,682 Total Liabilities 626,854 632,294 Investments in: Bank subsidiaries 2,226,975 2,174,786 Non-bank subsidiaries 408,187 414,863 Shareholders’ equity 2,041,894 1,996,665 Total Assets $ 2,668,748 $ 2,628,959 Total Liabilities and Shareholders’ Equity $ 2,668,748 $ 2,628,959 CONDENSED STATEMENTS OF INCOME 2015 2014 2013 (in thousands) Income: Dividends from subsidiaries $ 114,000 $ 139,150 $ 114,438 Other (1) 141,241 120,543 106,297 255,241 259,693 220,735 Expenses 176,457 152,243 138,164 Income before income taxes and equity in undistributed net income of subsidiaries 78,784 107,450 82,571 Income tax benefit (11,834 ) (10,549 ) (10,744 ) 90,618 117,999 93,315 Equity in undistributed net income (loss) of: Bank subsidiaries 60,806 33,134 56,552 Non-bank subsidiaries (1,922 ) 6,761 11,973 Net Income $ 149,502 $ 157,894 $ 161,840 (1) Consists primarily of management fees received from subsidiary banks. CONDENSED STATEMENTS OF CASH FLOWS 2015 2014 2013 (in thousands) Cash Flows From Operating Activities: Net Income $ 149,502 $ 157,894 $ 161,840 Adjustments to reconcile net income to net cash provided by operating activities: Stock-based compensation 5,938 5,865 5,330 Excess tax benefits from stock-based compensation (201 ) (81 ) (302 ) Decrease (increase) in other assets 2,806 (7,120 ) 1,893 Equity in undistributed net income of subsidiaries (58,884 ) (39,895 ) (68,525 ) Loss on redemption of trust preferred securities 5,626 — — Increase in other liabilities and payable to non-bank subsidiaries 106,490 37,354 26,946 Total adjustments 61,775 (3,877 ) (34,658 ) Net cash provided by operating activities 211,277 154,017 127,182 Cash Flows From Investing Activities — — — Cash Flows From Financing Activities: Repayments of long-term debt (254,640 ) — — Additions to long-term debt 147,779 97,113 — Net proceeds from issuance of common stock 10,607 8,201 9,936 Excess tax benefits from stock-based compensation 201 81 302 Dividends paid (65,361 ) (64,028 ) (46,525 ) Acquisition of treasury stock (50,000 ) (175,255 ) (90,927 ) Deferred accelerated stock repurchase payment — (20,000 ) — Net cash used in financing activities (211,414 ) (153,888 ) (127,214 ) Net (Decrease) Increase in Cash and Cash Equivalents (137 ) 129 (32 ) Cash and Cash Equivalents at Beginning of Year 137 8 40 Cash and Cash Equivalents at End of Year $ — $ 137 $ 8

Summary of Significant Accoun47

Summary of Significant Accounting Policies Narrative (Details)	12 Months Ended
	Dec. 31, 2015USD ($)subsidiarytrusts	Dec. 31, 2014USD ($)	Dec. 31, 2013USD ($)
Property, Plant and Equipment [Line Items]
Number of banks owned | subsidiarytrusts	6
Days past due for nonaccrual status	90 days
Period for which change in loans are evaluated individually for impairment quarterly	12 months
Individual impairment, outstanding commitment threshold	$ 1,000,000
Financing Receivable, Obtaining Certified Thrid-party Appraisal For Impaired Loans, Period	12 months
Collective impairment review, outstanding commitment threshold (less than $1.0 million)	$ 1,000,000
Impaired loans with principal balances	69.00%	81.00%
Impaired loans balances, real estate as collateral	$ 1,000,000
Threshold of companies current loan to value ratio of original appraisals used	70.00%
Foreign currency open position	$ 500,000
Award vesting period	3 years
Goodwill, impairment	$ 0	$ 0	$ 0
Variable Interest Entity [Abstract]
Subsidiary trusts owned by parent | subsidiarytrusts	3
Amortization period of LIH investments	10 years
Income taxes	$ 49,921,000	52,606,000	51,085,000
Stock Options
Property, Plant and Equipment [Line Items]
Term of award	P10Y
LIH Low Income Housing
Variable Interest Entity [Abstract]
Income taxes	$ (10,400,000)	(10,400,000)	$ (10,300,000)
Other Assets
Variable Interest Entity [Abstract]
Investments in low income housing	175,000,000	155,600,000
Other Noncurrent Liabilities
Variable Interest Entity [Abstract]
Investments, in low income housing, additional commitments	$ 47,600,000	$ 41,400,000
Building and Building Improvements
Property, Plant and Equipment [Line Items]
Property, plant and equipment, useful life	50 years
Furniture and Fixtures
Property, Plant and Equipment [Line Items]
Property, plant and equipment, useful life	8 years
Equipment
Property, Plant and Equipment [Line Items]
Property, plant and equipment, useful life	5 years
Consumer Loan
Property, Plant and Equipment [Line Items]
Number of days closed end consumer loans are charged off when they become past due	120 days
Number of days open end consumer loans are charged off when they become past due	180 days
Minimum
Variable Interest Entity [Abstract]
Amortization period of LIH investments	7 years
Maximum
Variable Interest Entity [Abstract]
Amortization period of LIH investments	10 years

Summary of Significant Accoun48

Summary of Significant Accounting Policies Net income (Loss) Per Common Share (Details) - shares shares in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Weighted Average Number of Shares Outstanding Reconciliation [Abstract]
Weighted average common shares outstanding (basic)	175,721	186,219	193,334
Impact of common stock equivalents	1,053	962	1,020
Weighted average common shares outstanding (diluted)	176,774	187,181	194,354
Stock Options
Weighted Average Number of Shares Outstanding Reconciliation [Abstract]
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount	1,700	2,800	3,600

Restrictions on Cash and Due 49

Restrictions on Cash and Due from Banks (Details) - USD ($) $ in Millions	Dec. 31, 2015	Dec. 31, 2014
Subsidiaries
Restricted Cash and Cash Equivalents Items [Line Items]
Restricted cash reserves due from subsidiary	$ 91.1	$ 97

Investment Securities Schedule

Investment Securities Schedule of Amortized Cost and Fair Values of Investment Securities (Details) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Statement [Line Items]
Available-for-sale securities, amortized cost basis	$ 2,494,059	$ 2,312,087
Available-for-sale Securities, Gross Unrealized Gain, Accumulated Investments	28,740	49,212
Available-for-sale Securities, Gross Unrealized Loss, Accumulated Investments	(38,026)	(37,928)
Available-for-sale Securities	2,484,773	2,323,371
U.S. Government securities
Statement [Line Items]
Available-for-sale securities, amortized cost basis	0	200
Available-for-sale Securities, Gross Unrealized Gain, Accumulated Investments	0	0
Available-for-sale Securities, Gross Unrealized Loss, Accumulated Investments	0	0
Available-for-sale Securities	0	200
U.S. Government sponsored agency securities
Statement [Line Items]
Available-for-sale securities, amortized cost basis	25,154	209
Available-for-sale Securities, Gross Unrealized Gain, Accumulated Investments	35	5
Available-for-sale Securities, Gross Unrealized Loss, Accumulated Investments	(53)	0
Available-for-sale Securities	25,136	214
State and municipal securities
Statement [Line Items]
Available-for-sale securities, amortized cost basis	256,746	238,250
Available-for-sale Securities, Gross Unrealized Gain, Accumulated Investments	6,019	7,231
Available-for-sale Securities, Gross Unrealized Loss, Accumulated Investments	0	(266)
Available-for-sale Securities	262,765	245,215
Corporate debt securities
Statement [Line Items]
Available-for-sale securities, amortized cost basis	100,336	99,016
Available-for-sale Securities, Gross Unrealized Gain, Accumulated Investments	2,695	5,126
Available-for-sale Securities, Gross Unrealized Loss, Accumulated Investments	(6,076)	(6,108)
Available-for-sale Securities	96,955	98,034
Collateralized mortgage obligations
Statement [Line Items]
Available-for-sale securities, amortized cost basis	835,439	917,395
Available-for-sale Securities, Gross Unrealized Gain, Accumulated Investments	3,042	5,705
Available-for-sale Securities, Gross Unrealized Loss, Accumulated Investments	(16,972)	(20,787)
Available-for-sale Securities	821,509	902,313
Mortgage-backed securities
Statement [Line Items]
Available-for-sale securities, amortized cost basis	1,154,935	914,797
Available-for-sale Securities, Gross Unrealized Gain, Accumulated Investments	10,104	16,978
Available-for-sale Securities, Gross Unrealized Loss, Accumulated Investments	(6,204)	(2,944)
Available-for-sale Securities	1,158,835	928,831
Auction rate securities
Statement [Line Items]
Available-for-sale securities, amortized cost basis	106,772	108,751
Available-for-sale Securities, Gross Unrealized Gain, Accumulated Investments	0	0
Available-for-sale Securities, Gross Unrealized Loss, Accumulated Investments	(8,713)	(7,810)
Available-for-sale Securities	98,059	100,941
Debt securities
Statement [Line Items]
Available-for-sale securities, amortized cost basis	2,479,382	2,278,618
Available-for-sale Securities, Gross Unrealized Gain, Accumulated Investments	21,895	35,045
Available-for-sale Securities, Gross Unrealized Loss, Accumulated Investments	(38,018)	(37,915)
Available-for-sale Securities	2,463,259	2,275,748
Equity securities
Statement [Line Items]
Available-for-sale securities, amortized cost basis	14,677	33,469
Available-for-sale Securities, Gross Unrealized Gain, Accumulated Investments	6,845	14,167
Available-for-sale Securities, Gross Unrealized Loss, Accumulated Investments	(8)	(13)
Available-for-sale Securities	$ 21,514	$ 47,623

Investment Securities Schedul51

Investment Securities Schedule of Amortized Cost and Fair Values of Debt Securities by Contractual Maturities (Details) $ in Thousands	Dec. 31, 2015USD ($)
Amortized Cost
Due in one year or less	$ 75,458
Due from one year to five years	85,840
Due from five years to ten years	124,190
Due after ten years	203,520
Amortized cost, before securities without debt maturities	489,008
Amortized cost basis	2,479,382
Estimated Fair Value
Due in one year or less	75,945
Due from one year to five years	87,877
Due from five years to ten years	127,103
Due after ten years	191,990
Available for sale securities, debt maturities, before securities without single maturities	482,915
Estimated Fair Value	2,463,259
Collateralized mortgage obligations
Amortized Cost
Available-for-sale securities, amortized cost without single maturity date	835,439
Estimated Fair Value
Available-for-sale securities, debt maturities, without single maturity date, fair value	821,509
Mortgage-backed securities
Amortized Cost
Available-for-sale securities, amortized cost without single maturity date	1,154,935
Estimated Fair Value
Available-for-sale securities, debt maturities, without single maturity date, fair value	$ 1,158,835

Investment Securities Summary o

Investment Securities Summary of Gains and Losses from Equity and Debt Securities, and Losses from Other-than-Temporary Impairment (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Gross Realized Gains	$ 9,067	$ 2,393	$ 8,178
Gross Realized Losses	(1)	(322)	(50)
Other- than- temporary Impairment Losses	0	(30)	(124)
Net Gains	9,066	2,041	8,004
Equity securities
Gross Realized Gains	6,496	335	4,391
Gross Realized Losses	(1)	0	(28)
Other- than- temporary Impairment Losses	0	(12)	(27)
Net Gains	6,495	323	4,336
Debt securities
Gross Realized Gains	2,571	2,058	3,787
Gross Realized Losses	0	(322)	(22)
Other- than- temporary Impairment Losses	0	(18)	(97)
Net Gains	$ 2,571	$ 1,718	$ 3,668

Investment Securities Other Tha

Investment Securities Other Than Temporary Impairment Charges (Details) - USD ($)	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Investment [Line Items]
Other than temporary impairment losses, investments, portion recognized in earnings, net, available-for-sale securities	$ 0	$ 30,000	$ 124,000
Equity securities - financial institution stocks
Investment [Line Items]
Other than temporary impairment losses, investments, portion recognized in earnings, net, available-for-sale securities		12,000	27,000
Pooled trust preferred securities
Investment [Line Items]
Other than temporary impairment losses, investments, portion recognized in earnings, net, available-for-sale securities		$ 18,000	$ 97,000

Investment Securities Summary54

Investment Securities Summary of Cumulative Other-than-Temporary Impairment Charges Recognized in Earnings for Pooled Trust Preferred Securities Held (Details) - Pooled trust preferred securities - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Other than Temporary Impairment, Credit Losses Recognized in Earnings [Roll Forward]
Balance of cumulative credit losses on debt securities, beginning of year	$ (16,242)	$ (20,691)	$ (23,079)
Additions for credit losses recorded which were not previously recognized as components of earnings	0	(18)	(97)
Reductions for securities sold during the period	4,730	4,460	2,468
Reductions for increases in cash flows expected to be collected that are recognized over the remaining life of the security	2	7	17
Balance of cumulative credit losses on debt securities, end of year	$ (11,510)	$ (16,242)	$ (20,691)

Investment Securities Gross Unr

Investment Securities Gross Unrealized Losses and Fair Values of Investments by Category and Length of Time in a Continuous Unrealized Loss Position (Details) $ in Thousands	Dec. 31, 2015USD ($)
Estimated Fair Value, Less than 12 Months	$ 800,776
Unrealized Losses, Less than 12 Months	(6,400)
Estimated Fair Value, 12 Months or Longer	662,705
Unrealized Losses, 12 Months or Longer	(31,626)
Estimated Fair Value, Total	1,463,481
Unrealized Losses, Total	(38,026)
U.S. Government sponsored agency securities
Estimated Fair Value, Less than 12 Months	9,957
Unrealized Losses, Less than 12 Months	(53)
Estimated Fair Value, 12 Months or Longer	0
Unrealized Losses, 12 Months or Longer	0
Estimated Fair Value, Total	9,957
Unrealized Losses, Total	(53)
Corporate debt securities
Estimated Fair Value, Less than 12 Months	12,892
Unrealized Losses, Less than 12 Months	(97)
Estimated Fair Value, 12 Months or Longer	33,036
Unrealized Losses, 12 Months or Longer	(5,979)
Estimated Fair Value, Total	45,928
Unrealized Losses, Total	(6,076)
Collateralized mortgage obligations
Estimated Fair Value, Less than 12 Months	166,007
Unrealized Losses, Less than 12 Months	(1,467)
Estimated Fair Value, 12 Months or Longer	467,778
Unrealized Losses, 12 Months or Longer	(15,505)
Estimated Fair Value, Total	633,785
Unrealized Losses, Total	(16,972)
Mortgage-backed securities
Estimated Fair Value, Less than 12 Months	611,920
Unrealized Losses, Less than 12 Months	(4,783)
Estimated Fair Value, 12 Months or Longer	63,818
Unrealized Losses, 12 Months or Longer	(1,421)
Estimated Fair Value, Total	675,738
Unrealized Losses, Total	(6,204)
Auction rate securities
Estimated Fair Value, Less than 12 Months	0
Unrealized Losses, Less than 12 Months	0
Estimated Fair Value, 12 Months or Longer	98,059
Unrealized Losses, 12 Months or Longer	(8,713)
Estimated Fair Value, Total	98,059
Unrealized Losses, Total	(8,713)
Debt securities
Estimated Fair Value, Less than 12 Months	800,776
Unrealized Losses, Less than 12 Months	(6,400)
Estimated Fair Value, 12 Months or Longer	662,691
Unrealized Losses, 12 Months or Longer	(31,618)
Estimated Fair Value, Total	1,463,467
Unrealized Losses, Total	(38,018)
Equity securities
Estimated Fair Value, Less than 12 Months	0
Unrealized Losses, Less than 12 Months	0
Estimated Fair Value, 12 Months or Longer	14
Unrealized Losses, 12 Months or Longer	(8)
Estimated Fair Value, Total	14
Unrealized Losses, Total	$ (8)

Investment Securities Summary56

Investment Securities Summary of Amortized Cost and Fair Values of Corporate Debt Securities (Details) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Amortized Cost	$ 2,479,382
Estimated Fair Value	2,463,259
Corporate Debt Securities Issued by Financial Institutions [Member]
Amortized Cost	96,301	$ 97,109
Estimated Fair Value	92,920	96,127
Single-issuer trust preferred securities
Amortized Cost	44,648	47,569
Estimated Fair Value	39,106	42,016
Subordinated debt
Amortized Cost	51,653	47,530
Estimated Fair Value	53,108	50,023
Pooled trust preferred securities
Amortized Cost	0	2,010
Estimated Fair Value	706	4,088
Other corporate debt securities
Amortized Cost	4,035	1,907
Estimated Fair Value	4,035	1,907
Corporate debt securities
Amortized Cost	100,336	99,016
Estimated Fair Value	$ 96,955	$ 98,034

Investment Securities Narrative

Investment Securities Narrative (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2015USD ($)Security	Dec. 31, 2014USD ($)
Available-for-sale securities pledged as collateral	$ 1,700,000	$ 1,700,000
Available-for-sale securities, amortized cost basis	2,494,059	2,312,087
Single bank stock investment, cost basis	7,400
Bank stock investment, fair value	$ 10,200
Percent ownership in an individual financial institution	49.50%
Individual bank stock investment percent to total portfolio	10.00%
Securities available for sale	$ 2,484,773	2,323,371
Domestic corporate debt securities	97,000
Equity securities
Available-for-sale securities, amortized cost basis	14,677	33,469
Securities available for sale	21,514	47,623
Equity Securities Financial Institution
Available-for-sale securities, equity securities	20,600	41,800
Available-for-sale securities, amortized cost basis	13,900
Equity Securities, Miscellaneous
Available-for-sale securities, equity securities	914	5,800
Auction rate securities
Available-for-sale securities, amortized cost basis	106,772	108,751
Securities available for sale	98,059	$ 100,941
Single-issuer trust preferred securities
Unrealized gain (loss) on securities	$ (5,500)
Number of securities | Security	19
External Credit Rating, Rated Above Investment Grade | Auction rate securities
Carrying value auction rate securities rated AAA	$ 92,500
Percentage auction rate securities rated AAA	94.00%
External Credit Rated AAA | Auction rate securities
Carrying value auction rate securities rated AAA	$ 5,600
Percentage auction rate securities rated AAA	6.00%
External Credit Rating, Rated Below Investment Grade | Single-issuer trust preferred securities
Available-for-sale securities, amortized cost basis	$ 12,500
Number of trust preferred securities	7
Securities available for sale	$ 10,700
External Credit Rating, BBB | Single-issuer trust preferred securities
Available-for-sale securities, amortized cost basis	3,700
Securities available for sale	$ 2,600

Loans and Allowance for Credi58

Loans and Allowance for Credit Losses Summary Of Gross Loans (Details) - USD ($)	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans before unearned income	$ 13,854,118,000	$ 13,124,093,000
Unearned income	(15,516,000)	(12,377,000)
Loans, net of unearned income	13,838,602,000	13,111,716,000
Loans and leases receivable, related parties	191,600,000	252,600,000
Proceeds from related party debt	12,000
Repayments of related party debt	61,000,000
Loans serviced by unrelated third party	4,800,000,000	4,900,000,000
Real estate – commercial mortgage
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans before unearned income	5,462,330,000	5,197,155,000
Loans, net of unearned income	5,462,330,000	5,197,155,000
Commercial – industrial, financial and agricultural
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans before unearned income	4,088,962,000	3,725,567,000
Loans, net of unearned income	4,088,962,000	3,725,567,000
Real estate – home equity
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans before unearned income	1,684,439,000	1,736,688,000
Loans, net of unearned income	1,684,439,000	1,736,688,000
Real estate – residential mortgage
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans before unearned income	1,376,160,000	1,377,068,000
Loans, net of unearned income	1,376,160,000	1,377,068,000
Real estate – construction
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans before unearned income	799,988,000	690,601,000
Loans, net of unearned income	799,988,000	690,601,000
Consumer
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans before unearned income	268,588,000	265,431,000
Loans, net of unearned income	268,588,000	265,431,000
Consumer
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans before unearned income	170,914,000	127,562,000
Overdrafts
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans before unearned income	$ 2,737,000	$ 4,021,000

Loans and Allowance for Credi59

Loans and Allowance for Credit Losses Allowance for Credit Losses (Details) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Receivables [Abstract]
Allowance for loan losses	$ 169,054	$ 184,144	$ 202,780
Reserve for unfunded lending commitments	2,358	1,787	2,137
Allowance for credit losses	$ 171,412	$ 185,931	$ 204,917	$ 225,439

Loans and Allowance for Credi60

Loans and Allowance for Credit Losses Activity in the Allowance for Credit Losses (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Receivables [Abstract]
Balance at beginning of year	$ 185,931	$ 204,917	$ 225,439
Loans charged off	32,157	44,593	80,212
Recoveries of loans previously charged off	15,388	13,107	19,190
Net loans charged off	16,769	31,486	61,022
Provision for credit losses	2,250	12,500	40,500
Balance at end of year	$ 171,412	$ 185,931	$ 204,917

Loans and Allowance for Credi61

Loans and Allowance for Credit Losses Allowance for Loan Losses by Portfolio Segment (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans and Leases Receivable, Allowance, Beginning Balance	$ 184,144	$ 202,780
Loans charged off	(32,157)	(44,593)	$ (80,212)
Recoveries of loans previously charged off	15,388	13,107	19,190
Loans Charged Off, Net Of Recoveries	(16,769)	(31,486)	(61,022)
Provision for loan losses	1,679	12,850
Financing receivable, allowance for credit losses, collectively evaluated for impairment	117,464	123,277
Financing receivable, allowance for credit losses, individually evaluated for impairment	51,590	60,867
Loans and Leases Receivable, Allowance, Ending Balance	169,054	184,144	202,780
Measured for impairment under FASB ASC Subtopic 450-20	13,648,521	12,923,015
Evaluated for impairment under FASB ASC Section 310-10-35	190,081	188,701
Loans, net of unearned income	$ 13,838,602	$ 13,111,716
Percentage of Unallocated Allowance	5.00%	4.00%
Change in provision allocated to commitments to lend to borrowers	$ 571	$ 350
Provision for credit losses	2,250	12,500	40,500
Real estate – commercial mortgage
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans and Leases Receivable, Allowance, Beginning Balance	53,493	55,659
Loans charged off	(4,218)	(6,004)
Recoveries of loans previously charged off	2,801	1,960
Loans Charged Off, Net Of Recoveries	(1,417)	(4,044)
Provision for loan losses	(4,210)	1,878
Financing receivable, allowance for credit losses, collectively evaluated for impairment	35,395	36,778
Financing receivable, allowance for credit losses, individually evaluated for impairment	12,471	16,715
Loans and Leases Receivable, Allowance, Ending Balance	47,866	53,493	55,659
Measured for impairment under FASB ASC Subtopic 450-20	5,404,036	5,133,896
Evaluated for impairment under FASB ASC Section 310-10-35	58,294	63,259
Loans, net of unearned income	5,462,330	5,197,155
Commercial – industrial, financial and agricultural
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans and Leases Receivable, Allowance, Beginning Balance	51,378	50,330
Loans charged off	(15,639)	(24,516)
Recoveries of loans previously charged off	5,264	4,256
Loans Charged Off, Net Of Recoveries	(10,375)	(20,260)
Provision for loan losses	16,095	21,308
Financing receivable, allowance for credit losses, collectively evaluated for impairment	42,515	38,348
Financing receivable, allowance for credit losses, individually evaluated for impairment	14,583	13,030
Loans and Leases Receivable, Allowance, Ending Balance	57,098	51,378	50,330
Measured for impairment under FASB ASC Subtopic 450-20	4,040,810	3,690,561
Evaluated for impairment under FASB ASC Section 310-10-35	48,152	35,006
Loans, net of unearned income	4,088,962	3,725,567
Real estate – home equity
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans and Leases Receivable, Allowance, Beginning Balance	28,271	28,222
Loans charged off	(3,604)	(5,486)
Recoveries of loans previously charged off	1,362	1,025
Loans Charged Off, Net Of Recoveries	(2,242)	(4,461)
Provision for loan losses	(3,624)	4,510
Financing receivable, allowance for credit losses, collectively evaluated for impairment	14,412	19,047
Financing receivable, allowance for credit losses, individually evaluated for impairment	7,993	9,224
Loans and Leases Receivable, Allowance, Ending Balance	22,405	28,271	28,222
Measured for impairment under FASB ASC Subtopic 450-20	1,668,673	1,723,230
Evaluated for impairment under FASB ASC Section 310-10-35	15,766	13,458
Loans, net of unearned income	1,684,439	1,736,688
Real estate – residential mortgage
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans and Leases Receivable, Allowance, Beginning Balance	29,072	33,082
Loans charged off	(3,612)	(2,918)
Recoveries of loans previously charged off	1,322	451
Loans Charged Off, Net Of Recoveries	(2,290)	(2,467)
Provision for loan losses	(5,407)	(1,543)
Financing receivable, allowance for credit losses, collectively evaluated for impairment	7,953	10,480
Financing receivable, allowance for credit losses, individually evaluated for impairment	13,422	18,592
Loans and Leases Receivable, Allowance, Ending Balance	21,375	29,072	33,082
Measured for impairment under FASB ASC Subtopic 450-20	1,325,735	1,325,717
Evaluated for impairment under FASB ASC Section 310-10-35	50,425	51,351
Loans, net of unearned income	1,376,160	1,377,068
Real estate – construction
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans and Leases Receivable, Allowance, Beginning Balance	9,756	12,649
Loans charged off	(201)	(1,209)
Recoveries of loans previously charged off	2,824	3,177
Loans Charged Off, Net Of Recoveries	2,623	1,968
Provision for loan losses	(5,850)	(4,861)
Financing receivable, allowance for credit losses, collectively evaluated for impairment	4,134	6,485
Financing receivable, allowance for credit losses, individually evaluated for impairment	2,395	3,271
Loans and Leases Receivable, Allowance, Ending Balance	6,529	9,756	12,649
Measured for impairment under FASB ASC Subtopic 450-20	784,002	665,012
Evaluated for impairment under FASB ASC Section 310-10-35	15,986	25,589
Loans, net of unearned income	799,988	690,601
Consumer
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans and Leases Receivable, Allowance, Beginning Balance	3,015	3,260
Loans charged off	(2,227)	(2,325)
Recoveries of loans previously charged off	1,130	1,322
Loans Charged Off, Net Of Recoveries	(1,097)	(1,003)
Provision for loan losses	667	758
Financing receivable, allowance for credit losses, collectively evaluated for impairment	2,563	2,980
Financing receivable, allowance for credit losses, individually evaluated for impairment	22	35
Loans and Leases Receivable, Allowance, Ending Balance	2,585	3,015	3,260
Measured for impairment under FASB ASC Subtopic 450-20	268,555	265,393
Evaluated for impairment under FASB ASC Section 310-10-35	33	38
Loans, net of unearned income	268,588	265,431
Leasing and other and overdrafts
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans and Leases Receivable, Allowance, Beginning Balance	1,799	3,370
Loans charged off	(2,656)	(2,135)
Recoveries of loans previously charged off	685	916
Loans Charged Off, Net Of Recoveries	(1,971)	(1,219)
Provision for loan losses	2,640	(352)
Financing receivable, allowance for credit losses, collectively evaluated for impairment	1,764	1,799
Financing receivable, allowance for credit losses, individually evaluated for impairment	704	0
Loans and Leases Receivable, Allowance, Ending Balance	2,468	1,799	3,370
Measured for impairment under FASB ASC Subtopic 450-20	156,710	119,206
Evaluated for impairment under FASB ASC Section 310-10-35	1,425	0
Loans, net of unearned income	158,135	119,206
Unallocated
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans and Leases Receivable, Allowance, Beginning Balance	7,360	16,208
Loans charged off	0	0
Recoveries of loans previously charged off		0
Loans Charged Off, Net Of Recoveries	0	0
Provision for loan losses	1,368	(8,848)
Financing receivable, allowance for credit losses, collectively evaluated for impairment	8,728	7,360
Loans and Leases Receivable, Allowance, Ending Balance	$ 8,728	$ 7,360	$ 16,208

Loans and Allowance for Credi62

Loans and Allowance for Credit Losses Total Impaired Loans by Class Segments (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Impaired Financing Receivables [Line Items]
No Related Allowance, Unpaid Principal Balance	$ 60,590	$ 68,022
No Related Allowance, Recorded Investment	49,953	59,073
Impaired Financing Receivable, with Related Allowance, Unpaid Principal Balance	174,199	167,682
Impaired Financing Receivable, with Related Allowance, Recorded Investment	140,128	129,628
Unpaid Principal Balance	234,789	235,704
Recorded Investment	190,081	188,701
Related Allowance	51,590	60,867
No Related Allowance, Average Recorded Investment	59,005	61,435	$ 83,212
No Related Allowance, Interest Income Recognized	684	698	946
Related Allowance, Average Recorded Investment	134,747	135,416	154,050
Related Allowance, Interest Income, Accrual Method	1,897	2,079	2,311
Impaired Financing Receivable, Average Recorded Investment	193,752	196,851	237,262
Interest income on impaired loans	2,581	2,777	3,257
Real estate – commercial mortgage
Impaired Financing Receivables [Line Items]
No Related Allowance, Unpaid Principal Balance	27,872	25,802
No Related Allowance, Recorded Investment	22,596	23,236
Impaired Financing Receivable, with Related Allowance, Unpaid Principal Balance	45,189	49,619
Impaired Financing Receivable, with Related Allowance, Recorded Investment	35,698	40,023
Related Allowance	12,471	16,715
No Related Allowance, Average Recorded Investment	25,345	23,467	28,603
No Related Allowance, Interest Income Recognized	315	320	489
Related Allowance, Average Recorded Investment	39,232	38,240	44,136
Related Allowance, Interest Income, Accrual Method	475	524	706
Commercial - secured
Impaired Financing Receivables [Line Items]
No Related Allowance, Unpaid Principal Balance	18,012	17,599
No Related Allowance, Recorded Investment	13,702	14,582
Impaired Financing Receivable, with Related Allowance, Unpaid Principal Balance	39,659	24,824
Impaired Financing Receivable, with Related Allowance, Recorded Investment	33,629	19,335
Related Allowance	14,085	12,165
No Related Allowance, Average Recorded Investment	15,654	18,928	30,299
No Related Allowance, Interest Income Recognized	97	119	173
Related Allowance, Average Recorded Investment	25,660	20,991	27,919
Related Allowance, Interest Income, Accrual Method	150	129	153
Commercial - unsecured
Impaired Financing Receivables [Line Items]
Impaired Financing Receivable, with Related Allowance, Unpaid Principal Balance	971	1,241
Impaired Financing Receivable, with Related Allowance, Recorded Investment	821	1,089
Related Allowance	498	865
No Related Allowance, Average Recorded Investment	17	0	26
No Related Allowance, Interest Income Recognized	0	0	0
Related Allowance, Average Recorded Investment	1,749	895	1,411
Related Allowance, Interest Income, Accrual Method	6	3	5
Real estate – home equity
Impaired Financing Receivables [Line Items]
Impaired Financing Receivable, with Related Allowance, Unpaid Principal Balance	20,347	19,392
Impaired Financing Receivable, with Related Allowance, Recorded Investment	15,766	13,458
Related Allowance	7,993	9,224
No Related Allowance, Average Recorded Investment	0	180	262
No Related Allowance, Interest Income Recognized	0	1	1
Related Allowance, Average Recorded Investment	13,887	13,976	14,092
Related Allowance, Interest Income, Accrual Method	144	108	65
Real estate – residential mortgage
Impaired Financing Receivables [Line Items]
No Related Allowance, Unpaid Principal Balance	4,790	4,873
No Related Allowance, Recorded Investment	4,790	4,873
Impaired Financing Receivable, with Related Allowance, Unpaid Principal Balance	55,242	56,607
Impaired Financing Receivable, with Related Allowance, Recorded Investment	45,635	46,478
Related Allowance	13,422	18,592
No Related Allowance, Average Recorded Investment	5,389	1,532	695
No Related Allowance, Interest Income Recognized	124	31	25
Related Allowance, Average Recorded Investment	46,252	50,281	52,251
Related Allowance, Interest Income, Accrual Method	1,041	1,178	1,210
Construction - commercial residential
Impaired Financing Receivables [Line Items]
No Related Allowance, Unpaid Principal Balance	9,916	18,041
No Related Allowance, Recorded Investment	8,865	14,801
Impaired Financing Receivable, with Related Allowance, Unpaid Principal Balance	9,949	14,007
Impaired Financing Receivable, with Related Allowance, Recorded Investment	6,290	7,903
Related Allowance	2,110	2,675
No Related Allowance, Average Recorded Investment	11,685	15,421	19,847
No Related Allowance, Interest Income Recognized	148	227	256
Related Allowance, Average Recorded Investment	6,455	8,723	11,219
Related Allowance, Interest Income, Accrual Method	79	136	168
Construction - commercial
Impaired Financing Receivables [Line Items]
No Related Allowance, Unpaid Principal Balance	0	1,707
No Related Allowance, Recorded Investment	0	1,581
Impaired Financing Receivable, with Related Allowance, Unpaid Principal Balance	820	1,501
Impaired Financing Receivable, with Related Allowance, Recorded Investment	638	1,023
Related Allowance	217	459
No Related Allowance, Average Recorded Investment	915	1,907	3,480
No Related Allowance, Interest Income Recognized	0	0	2
Related Allowance, Average Recorded Investment	931	1,900	2,468
Related Allowance, Interest Income, Accrual Method	0	0	3
Construction - other
Impaired Financing Receivables [Line Items]
Impaired Financing Receivable, with Related Allowance, Unpaid Principal Balance	331	452
Impaired Financing Receivable, with Related Allowance, Recorded Investment	193	281
Related Allowance	68	137
Related Allowance, Average Recorded Investment	263	387	523
Related Allowance, Interest Income, Accrual Method	0	0	1
Consumer - indirect
Impaired Financing Receivables [Line Items]
Impaired Financing Receivable, with Related Allowance, Unpaid Principal Balance	14	20
Impaired Financing Receivable, with Related Allowance, Recorded Investment	14	19
Related Allowance	8	18
Related Allowance, Average Recorded Investment	16	7	1
Related Allowance, Interest Income, Accrual Method	1	0	0
Consumer - direct
Impaired Financing Receivables [Line Items]
Impaired Financing Receivable, with Related Allowance, Unpaid Principal Balance	19	19
Impaired Financing Receivable, with Related Allowance, Recorded Investment	19	19
Related Allowance	14	17
Related Allowance, Average Recorded Investment	17	16	19
Related Allowance, Interest Income, Accrual Method	1	1	0
Leasing and other and overdrafts
Impaired Financing Receivables [Line Items]
Impaired Financing Receivable, with Related Allowance, Unpaid Principal Balance	1,658	0
Impaired Financing Receivable, with Related Allowance, Recorded Investment	1,425	0
Related Allowance	704	0
Related Allowance, Average Recorded Investment	285	0	11
Related Allowance, Interest Income, Accrual Method	$ 0	$ 0	$ 0

Loans and Allowance for Credi63

Loans and Allowance for Credit Losses Credit Quality Indicators (Details) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Financing Receivable, Recorded Investment [Line Items]
Carrying Amount	$ 13,854,118	$ 13,124,093
Commercial – industrial, financial and agricultural
Financing Receivable, Recorded Investment [Line Items]
Carrying Amount	4,088,962	3,725,567
Real estate – commercial mortgage
Financing Receivable, Recorded Investment [Line Items]
Carrying Amount	5,462,330	5,197,155
Commercial - secured
Financing Receivable, Recorded Investment [Line Items]
Carrying Amount	3,926,113	3,564,614
Commercial - unsecured
Financing Receivable, Recorded Investment [Line Items]
Carrying Amount	162,849	160,953
Construction - commercial residential
Financing Receivable, Recorded Investment [Line Items]
Carrying Amount	179,303	203,670
Construction - commercial
Financing Receivable, Recorded Investment [Line Items]
Carrying Amount	559,991	427,419
Total real estate - construction (excluding construction - other)
Financing Receivable, Recorded Investment [Line Items]
Carrying Amount	739,294	631,089
Commercial Loans, Commerical Mortgages, Constructions Loans
Financing Receivable, Recorded Investment [Line Items]
Carrying Amount	$ 10,290,586	$ 9,553,811
% of Total	100.00%	100.00%
Pass | Commercial – industrial, financial and agricultural
Financing Receivable, Recorded Investment [Line Items]
Carrying Amount	$ 3,853,434	$ 3,480,166
Pass | Real estate – commercial mortgage
Financing Receivable, Recorded Investment [Line Items]
Carrying Amount	5,204,263	4,899,016
Pass | Commercial - secured
Financing Receivable, Recorded Investment [Line Items]
Carrying Amount	3,696,692	3,333,486
Pass | Commercial - unsecured
Financing Receivable, Recorded Investment [Line Items]
Carrying Amount	156,742	146,680
Pass | Construction - commercial residential
Financing Receivable, Recorded Investment [Line Items]
Carrying Amount	140,337	136,109
Pass | Construction - commercial
Financing Receivable, Recorded Investment [Line Items]
Carrying Amount	552,710	409,631
Pass | Total real estate - construction (excluding construction - other)
Financing Receivable, Recorded Investment [Line Items]
Carrying Amount	693,047	545,740
Pass | Commercial Loans, Commerical Mortgages, Constructions Loans
Financing Receivable, Recorded Investment [Line Items]
Carrying Amount	$ 9,750,744	$ 8,924,922
% of Total	94.80%	93.40%
Special Mention | Commercial – industrial, financial and agricultural
Financing Receivable, Recorded Investment [Line Items]
Carrying Amount	$ 95,472	$ 128,047
Special Mention | Real estate – commercial mortgage
Financing Receivable, Recorded Investment [Line Items]
Carrying Amount	102,625	127,302
Special Mention | Commercial - secured
Financing Receivable, Recorded Investment [Line Items]
Carrying Amount	92,711	120,584
Special Mention | Commercial - unsecured
Financing Receivable, Recorded Investment [Line Items]
Carrying Amount	2,761	7,463
Special Mention | Construction - commercial residential
Financing Receivable, Recorded Investment [Line Items]
Carrying Amount	17,154	27,495
Special Mention | Construction - commercial
Financing Receivable, Recorded Investment [Line Items]
Carrying Amount	3,684	12,202
Special Mention | Total real estate - construction (excluding construction - other)
Financing Receivable, Recorded Investment [Line Items]
Carrying Amount	20,838	39,697
Special Mention | Commercial Loans, Commerical Mortgages, Constructions Loans
Financing Receivable, Recorded Investment [Line Items]
Carrying Amount	$ 218,935	$ 295,046
% of Total	2.10%	3.10%
Substandard or Lower | Commercial – industrial, financial and agricultural
Financing Receivable, Recorded Investment [Line Items]
Carrying Amount	$ 140,056	$ 117,354
Substandard or Lower | Real estate – commercial mortgage
Financing Receivable, Recorded Investment [Line Items]
Carrying Amount	155,442	170,837
Substandard or Lower | Commercial - secured
Financing Receivable, Recorded Investment [Line Items]
Carrying Amount	136,710	110,544
Substandard or Lower | Commercial - unsecured
Financing Receivable, Recorded Investment [Line Items]
Carrying Amount	3,346	6,810
Substandard or Lower | Construction - commercial residential
Financing Receivable, Recorded Investment [Line Items]
Carrying Amount	21,812	40,066
Substandard or Lower | Construction - commercial
Financing Receivable, Recorded Investment [Line Items]
Carrying Amount	3,597	5,586
Substandard or Lower | Total real estate - construction (excluding construction - other)
Financing Receivable, Recorded Investment [Line Items]
Carrying Amount	25,409	45,652
Substandard or Lower | Commercial Loans, Commerical Mortgages, Constructions Loans
Financing Receivable, Recorded Investment [Line Items]
Carrying Amount	$ 320,907	$ 333,843
% of Total	3.10%	3.50%

Loans and Allowance for Credi64

Loans and Allowance for Credit Losses Summary of Delinquency and Non-Performing Status by Portfolio Segment (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2015USD ($)	Dec. 31, 2014USD ($)
Loans, net of unearned income	$ 13,838,602	$ 13,111,716
Period for which change in loans evaluated individually for impairment	90
Minimum
Days outstanding	30
Maximum
Days outstanding	89
Real estate – home equity
Loans, net of unearned income	$ 1,684,439	1,736,688
Real estate – residential mortgage
Loans, net of unearned income	1,376,160	1,377,068
Construction - other
Loans, net of unearned income	60,694	59,512
Consumer - direct
Loans, net of unearned income	98,719	109,323
Consumer - indirect
Loans, net of unearned income	169,869	156,108
Consumer
Loans, net of unearned income	268,588	265,431
Leasing and other and overdrafts
Loans, net of unearned income	158,135	119,206
Commercial Loans, Commerical Mortgages, Constructions Loans
Loans, net of unearned income	$ 3,548,016	$ 3,557,905
Ratio of nonperforming loans to all loans	100.00%	100.00%
Performing | Real estate – home equity
Loans, net of unearned income	$ 1,660,773	$ 1,711,017
Performing | Real estate – residential mortgage
Loans, net of unearned income	1,329,371	1,321,139
Performing | Construction - other
Loans, net of unearned income	59,997	59,180
Performing | Consumer - direct
Loans, net of unearned income	94,262	104,018
Performing | Consumer - indirect
Loans, net of unearned income	166,823	153,358
Performing | Consumer
Loans, net of unearned income	261,085	257,376
Performing | Leasing and other and overdrafts
Loans, net of unearned income	155,870	118,550
Performing | Commercial Loans, Commerical Mortgages, Constructions Loans
Loans, net of unearned income	$ 3,467,096	$ 3,467,262
Ratio of nonperforming loans to all loans	97.70%	97.50%
Delinquent | Real estate – home equity
Loans, net of unearned income	$ 8,983	$ 10,931
Delinquent | Real estate – residential mortgage
Loans, net of unearned income	18,305	26,934
Delinquent | Construction - other
Loans, net of unearned income	88	0
Delinquent | Consumer - direct
Loans, net of unearned income	2,254	2,891
Delinquent | Consumer - indirect
Loans, net of unearned income	2,809	2,574
Delinquent | Consumer
Loans, net of unearned income	5,063	5,465
Delinquent | Leasing and other and overdrafts
Loans, net of unearned income	759	523
Delinquent | Commercial Loans, Commerical Mortgages, Constructions Loans
Loans, net of unearned income	$ 33,198	$ 43,853
Ratio of nonperforming loans to all loans	1.00%	1.20%
Nonperforming | Real estate – home equity
Loans, net of unearned income	$ 14,683	$ 14,740
Nonperforming | Real estate – residential mortgage
Loans, net of unearned income	28,484	28,995
Nonperforming | Construction - other
Loans, net of unearned income	609	332
Nonperforming | Consumer - direct
Loans, net of unearned income	2,203	2,414
Nonperforming | Consumer - indirect
Loans, net of unearned income	237	176
Nonperforming | Consumer
Loans, net of unearned income	2,440	2,590
Nonperforming | Leasing and other and overdrafts
Loans, net of unearned income	1,506	133
Nonperforming | Commercial Loans, Commerical Mortgages, Constructions Loans
Loans, net of unearned income	$ 47,722	$ 46,790
Ratio of nonperforming loans to all loans	1.30%	1.30%

Loans and Allowance for Credi65

Loans and Allowance for Credit Losses Non-Performing Assets (Details) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Receivables [Abstract]
Non-accrual loans	$ 129,523	$ 121,080
Loans 90 days or more past due and still accruing	15,291	17,402
Total non-performing loans	144,814	138,482
Other real estate owned	11,099	12,022
Total non-performing assets	$ 155,913	$ 150,504

Loans and Allowance for Credi66

Loans and Allowance for Credit Losses Past Due Loan Status and Non-Accrual Loans by Portfolio Segment (Details) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
>90 Days Past Due and Accruing	$ 15,291	$ 17,402
Non-accrual	129,523	121,080
Total Past Due	196,741	206,828
Current	13,641,861	12,904,888
Loans, net of unearned income	13,838,602	13,111,716
Commercial – industrial, financial and agricultural
>90 Days Past Due and Accruing	1,872	619
Non-accrual	42,199	29,769
Total Past Due	52,933	36,645
Current	4,036,029	3,688,922
Loans, net of unearned income	4,088,962	3,725,567
Real estate – commercial mortgage
>90 Days Past Due and Accruing	439	800
Non-accrual	40,731	44,437
Total Past Due	48,951	63,313
Current	5,413,379	5,133,842
Loans, net of unearned income	5,462,330	5,197,155
Commercial - secured
>90 Days Past Due and Accruing	1,853	610
Non-accrual	41,498	28,747
Total Past Due	51,620	35,154
Current	3,874,493	3,529,460
Loans, net of unearned income	3,926,113	3,564,614
Commercial - unsecured
>90 Days Past Due and Accruing	19	9
Non-accrual	701	1,022
Total Past Due	1,313	1,491
Current	161,536	159,462
Loans, net of unearned income	162,849	160,953
Real estate – home equity
>90 Days Past Due and Accruing	3,473	4,257
Non-accrual	11,210	10,483
Total Past Due	23,666	25,671
Current	1,660,773	1,711,017
Loans, net of unearned income	1,684,439	1,736,688
Real estate – residential mortgage
>90 Days Past Due and Accruing	6,570	8,952
Non-accrual	21,914	20,043
Total Past Due	46,789	55,929
Current	1,329,371	1,321,139
Loans, net of unearned income	1,376,160	1,377,068
Real estate – construction
>90 Days Past Due and Accruing	416	51
Non-accrual	12,044	16,348
Total Past Due	14,634	16,559
Current	785,354	674,042
Loans, net of unearned income	799,988	690,601
Construction - commercial residential
>90 Days Past Due and Accruing	0	0
Non-accrual	11,213	13,463
Total Past Due	13,073	13,623
Current	166,230	190,047
Loans, net of unearned income	179,303	203,670
Construction - commercial
>90 Days Past Due and Accruing	0	0
Non-accrual	638	2,604
Total Past Due	864	2,604
Current	559,127	424,815
Loans, net of unearned income	559,991	427,419
Construction - other
>90 Days Past Due and Accruing	416	51
Non-accrual	193	281
Total Past Due	697	332
Current	59,997	59,180
Loans, net of unearned income	60,694	59,512
Consumer
>90 Days Past Due and Accruing	2,440	2,590
Non-accrual	0	0
Total Past Due	7,503	8,055
Current	261,085	257,376
Loans, net of unearned income	268,588	265,431
Consumer - direct
>90 Days Past Due and Accruing	2,203	2,414
Non-accrual	0	0
Total Past Due	4,457	5,305
Current	94,262	104,018
Loans, net of unearned income	98,719	109,323
Consumer - indirect
>90 Days Past Due and Accruing	237	176
Non-accrual	0	0
Total Past Due	3,046	2,750
Current	166,823	153,358
Loans, net of unearned income	169,869	156,108
Leasing and other and overdrafts
>90 Days Past Due and Accruing	81	133
Non-accrual	1,425	0
Total Past Due	2,265	656
Current	155,870	118,550
Loans, net of unearned income	158,135	119,206
30-59 Days Past Due
Total Past Due	40,194	51,177
30-59 Days Past Due | Commercial – industrial, financial and agricultural
Total Past Due	6,164	5,234
30-59 Days Past Due | Real estate – commercial mortgage
Total Past Due	6,469	14,399
30-59 Days Past Due | Commercial - secured
Total Past Due	5,654	4,839
30-59 Days Past Due | Commercial - unsecured
Total Past Due	510	395
30-59 Days Past Due | Real estate – home equity
Total Past Due	6,438	8,048
30-59 Days Past Due | Real estate – residential mortgage
Total Past Due	15,141	18,789
30-59 Days Past Due | Real estate – construction
Total Past Due	1,504	160
30-59 Days Past Due | Construction - commercial residential
Total Past Due	1,366	160
30-59 Days Past Due | Construction - commercial
Total Past Due	50	0
30-59 Days Past Due | Construction - other
Total Past Due	88	0
30-59 Days Past Due | Consumer
Total Past Due	3,995	4,190
30-59 Days Past Due | Consumer - direct
Total Past Due	1,687	2,034
30-59 Days Past Due | Consumer - indirect
Total Past Due	2,308	2,156
30-59 Days Past Due | Leasing and other and overdrafts
Total Past Due	483	357
60-89 Days Past Due
Total Past Due	11,733	17,169
60-89 Days Past Due | Commercial – industrial, financial and agricultural
Total Past Due	2,698	1,023
60-89 Days Past Due | Real estate – commercial mortgage
Total Past Due	1,312	3,677
60-89 Days Past Due | Commercial - secured
Total Past Due	2,615	958
60-89 Days Past Due | Commercial - unsecured
Total Past Due	83	65
60-89 Days Past Due | Real estate – home equity
Total Past Due	2,545	2,883
60-89 Days Past Due | Real estate – residential mortgage
Total Past Due	3,164	8,145
60-89 Days Past Due | Real estate – construction
Total Past Due	670	0
60-89 Days Past Due | Construction - commercial residential
Total Past Due	494	0
60-89 Days Past Due | Construction - commercial
Total Past Due	176	0
60-89 Days Past Due | Construction - other
Total Past Due	0	0
60-89 Days Past Due | Consumer
Total Past Due	1,068	1,275
60-89 Days Past Due | Consumer - direct
Total Past Due	567	857
60-89 Days Past Due | Consumer - indirect
Total Past Due	501	418
60-89 Days Past Due | Leasing and other and overdrafts
Total Past Due	276	166
Total ≥ 90 Days
Total Past Due	144,814	138,482
Total ≥ 90 Days | Commercial – industrial, financial and agricultural
Total Past Due	44,071	30,388
Total ≥ 90 Days | Real estate – commercial mortgage
Total Past Due	41,170	45,237
Total ≥ 90 Days | Commercial - secured
Total Past Due	43,351	29,357
Total ≥ 90 Days | Commercial - unsecured
Total Past Due	720	1,031
Total ≥ 90 Days | Real estate – home equity
Total Past Due	14,683	14,740
Total ≥ 90 Days | Real estate – residential mortgage
Total Past Due	28,484	28,995
Total ≥ 90 Days | Real estate – construction
Total Past Due	12,460	16,399
Total ≥ 90 Days | Construction - commercial residential
Total Past Due	11,213	13,463
Total ≥ 90 Days | Construction - commercial
Total Past Due	638	2,604
Total ≥ 90 Days | Construction - other
Total Past Due	609	332
Total ≥ 90 Days | Consumer
Total Past Due	2,440	2,590
Total ≥ 90 Days | Consumer - direct
Total Past Due	2,203	2,414
Total ≥ 90 Days | Consumer - indirect
Total Past Due	237	176
Total ≥ 90 Days | Leasing and other and overdrafts
Total Past Due	$ 1,506	$ 133

Loans and Allowance for Credi67

Loans and Allowance for Credit Losses Troubled Debt Restructurings (Details) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Financing Receivable, Modifications [Line Items]
Total accruing TDRs	$ 60,558	$ 67,621
Non-accrual TDRs	31,035	24,616
Total TDRs	91,593	92,237
Residential Mortgage
Financing Receivable, Modifications [Line Items]
Total accruing TDRs	28,511	31,308
Commercial Real Estate [Member]
Financing Receivable, Modifications [Line Items]
Total accruing TDRs	17,563	18,822
Construction - commercial residential
Financing Receivable, Modifications [Line Items]
Total accruing TDRs	3,942	9,241
Commercial - secured
Financing Receivable, Modifications [Line Items]
Total accruing TDRs	5,833	5,170
Real estate – home equity
Financing Receivable, Modifications [Line Items]
Total accruing TDRs	4,556	2,975
Commercial - unsecured
Financing Receivable, Modifications [Line Items]
Total accruing TDRs	120	67
Consumer - direct
Financing Receivable, Modifications [Line Items]
Total accruing TDRs	19	19
Consumer - indirect:
Financing Receivable, Modifications [Line Items]
Total accruing TDRs	$ 14	$ 19

Loans and Allowance for Credi68

Loans and Allowance for Credit Losses Troubled Debt Restructuring Modification (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2015USD ($)loans	Dec. 31, 2014USD ($)loans
Financing Receivable, Modifications [Line Items]
Number of loans modified during the year (loans) | loans	96	86
Post-Modification Recorded Investment	$ 14,416	$ 16,397
Number of Loans, modified during the year that had a post-modification default	29	31
Recorded Investment, modified during the year that had a post-modification default	$ 5,116	$ 7,063
Commercial - secured
Financing Receivable, Modifications [Line Items]
Number of Loans, modified during the year that had a post-modification default	8	4
Recorded Investment, modified during the year that had a post-modification default	$ 3,549	$ 1,208
Commercial - secured | Extend maturity with rate concession
Financing Receivable, Modifications [Line Items]
Number of loans modified during the year (loans) | loans	2	3
Post-Modification Recorded Investment	$ 127	$ 315
Commercial - secured | Extend maturity without rate concession
Financing Receivable, Modifications [Line Items]
Number of loans modified during the year (loans) | loans	9	8
Post-Modification Recorded Investment	$ 3,785	$ 1,640
Commercial - unsecured | Extend maturity without rate concession
Financing Receivable, Modifications [Line Items]
Number of loans modified during the year (loans) | loans	1	0
Post-Modification Recorded Investment	$ 38	$ 0
Real estate – commercial mortgage
Financing Receivable, Modifications [Line Items]
Number of Loans, modified during the year that had a post-modification default	4	2
Recorded Investment, modified during the year that had a post-modification default	$ 359	$ 1,660
Real estate – commercial mortgage | Extend maturity with rate concession
Financing Receivable, Modifications [Line Items]
Number of loans modified during the year (loans) | loans	5	1
Post-Modification Recorded Investment	$ 2,014	$ 60
Real estate – commercial mortgage | Extend maturity without rate concession
Financing Receivable, Modifications [Line Items]
Number of loans modified during the year (loans) | loans	4	7
Post-Modification Recorded Investment	$ 639	$ 6,781
Real estate – home equity
Financing Receivable, Modifications [Line Items]
Number of Loans, modified during the year that had a post-modification default	13	11
Recorded Investment, modified during the year that had a post-modification default	$ 763	$ 961
Real estate – home equity | Extend maturity with rate concession
Financing Receivable, Modifications [Line Items]
Number of loans modified during the year (loans) | loans	2	0
Post-Modification Recorded Investment	$ 36	$ 0
Real estate – home equity | Extend maturity without rate concession
Financing Receivable, Modifications [Line Items]
Number of loans modified during the year (loans) | loans	3	0
Post-Modification Recorded Investment	$ 203	$ 0
Real estate – home equity | Bankruptcy
Financing Receivable, Modifications [Line Items]
Number of loans modified during the year (loans) | loans	52	30
Post-Modification Recorded Investment	$ 2,501	$ 1,551
Real estate – residential mortgage
Financing Receivable, Modifications [Line Items]
Number of Loans, modified during the year that had a post-modification default	4	11
Recorded Investment, modified during the year that had a post-modification default	$ 445	$ 1,430
Real estate – residential mortgage | Extend maturity with rate concession
Financing Receivable, Modifications [Line Items]
Number of loans modified during the year (loans) | loans	4	2
Post-Modification Recorded Investment	$ 750	$ 390
Real estate – residential mortgage | Extend maturity without rate concession
Financing Receivable, Modifications [Line Items]
Number of loans modified during the year (loans) | loans	3	2
Post-Modification Recorded Investment	$ 262	$ 210
Real estate – residential mortgage | Bankruptcy
Financing Receivable, Modifications [Line Items]
Number of loans modified during the year (loans) | loans	7	19
Post-Modification Recorded Investment	$ 2,508	$ 1,807
Construction - commercial residential
Financing Receivable, Modifications [Line Items]
Number of Loans, modified during the year that had a post-modification default	0	2
Recorded Investment, modified during the year that had a post-modification default	$ 0	$ 1,803
Construction - commercial residential | Extend maturity without rate concession
Financing Receivable, Modifications [Line Items]
Number of loans modified during the year (loans) | loans	1	3
Post-Modification Recorded Investment	$ 1,535	$ 3,616
Consumer - direct
Financing Receivable, Modifications [Line Items]
Number of Loans, modified during the year that had a post-modification default	0	1
Recorded Investment, modified during the year that had a post-modification default	$ 0	$ 1
Consumer - direct | Bankruptcy
Financing Receivable, Modifications [Line Items]
Number of loans modified during the year (loans) | loans	2	7
Post-Modification Recorded Investment	$ 6	$ 7
Consumer - indirect: | Bankruptcy
Financing Receivable, Modifications [Line Items]
Number of loans modified during the year (loans) | loans	1	4
Post-Modification Recorded Investment	$ 12	$ 20

Loans and Allowance for Credi69

Loans and Allowance for Credit Losses Narrative (Details) - USD ($) $ in Millions	Dec. 31, 2015	Dec. 31, 2014
Receivables [Abstract]
Commitments to lend additional funds to borrowers	$ 5.3	$ 3.9

Premises and Equipment (Details

Premises and Equipment (Details) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Property, Plant and Equipment [Line Items]
Premises and equipment, gross	$ 487,012	$ 522,801
Less: Accumulated depreciation and amortization	(261,477)	(296,774)
Premises and equipment, net	225,535	226,027
Land
Property, Plant and Equipment [Line Items]
Premises and equipment, gross	37,380	37,667
Buildings and improvements
Property, Plant and Equipment [Line Items]
Premises and equipment, gross	297,018	287,271
Furniture and equipment
Property, Plant and Equipment [Line Items]
Premises and equipment, gross	136,029	176,808
Construction in progress
Property, Plant and Equipment [Line Items]
Premises and equipment, gross	$ 16,585	$ 21,055

Goodwill and Intangible Asset71

Goodwill and Intangible Assets Goodwill (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2015USD ($)reportingunits	Dec. 31, 2014USD ($)	Dec. 31, 2013USD ($)	Dec. 31, 2015USD ($)
Goodwill [Roll Forward]
Balance at beginning of year	$ 530,593	$ 530,607	$ 530,656
Other goodwill deductions	0	(14)	(49)
Balance at end of year	530,593	530,593	530,607
Goodwill	530,593	$ 530,607	$ 530,656	$ 530,593
Subsidiaries | One Reporting Unit
Goodwill [Roll Forward]
Balance at end of year	$ 167,500
Number of reporting units | reportingunits	1
Goodwill	$ 167,500			$ 167,500
Goodwill impairment test fair value exceeding adjusted net book value				5.00%
Subsidiaries | Six Reporting Units
Goodwill [Roll Forward]
Balance at end of year	$ 363,100
Number of reporting units | reportingunits	6
Goodwill	$ 363,100			$ 363,100
Goodwill impairment test fair value exceeding adjusted net book value				51.00%

Goodwill and Intangible Asset72

Goodwill and Intangible Assets Intangibles (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Finite-Lived Intangible Assets [Abstract]
Gross	$ 59,402	$ 59,402
Accumulated Amortization	(59,402)	(59,155)
Net	0	247
Indefinite-Lived Intangible Assets [Abstract]
Gross	963	963
Write-off	0	0
Net	963	963
Intangible Assets, Net [Abstract]
Gross	60,365	60,365
Accumulated Amortization	(59,402)	(59,155)
Net	963	1,210
Intangible amortization	247	1,259	$ 2,438
Core deposit
Finite-Lived Intangible Assets [Abstract]
Gross	50,279	50,279
Accumulated Amortization	(50,279)	(50,054)
Net	0	225
Other
Finite-Lived Intangible Assets [Abstract]
Gross	9,123	9,123
Accumulated Amortization	(9,123)	(9,101)
Net	$ 0	$ 22

Mortgage Servicing Rights Summa

Mortgage Servicing Rights Summary of Changes in Mortgage Servicing Rights (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014
Amortized cost:
Servicing Asset at Fair Value, Amount	$ 45,300	$ 46,000
Mortgage
Amortized cost:
Balance at beginning of year	42,148	42,452
Originations of mortgage servicing rights	6,166	5,047
Amortization expense	(7,370)	(5,351)
Balance at end of year	40,944	$ 42,148
Amortization [Abstract]
2,016	10,681
2,017	9,292
2,018	7,774
2,019	6,118
20,120	$ 4,316

Deposits (Details)

Deposits (Details) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Deposits [Line Items]
Noninterest-bearing demand	$ 3,948,114	$ 3,640,623
Interest-bearing demand	3,451,207	3,150,612
Savings and money market accounts	3,868,046	3,504,820
Time deposits	2,864,950	3,071,451
Total Deposits	14,132,317	13,367,506
Time Deposits, $250,000 or More	359,900	366,700
Maturities of Time Deposits [Abstract]
2,016	1,342,716
2,017	508,171
2,018	239,480
2,019	527,480
2,020	163,559
Thereafter	83,544
Total	2,864,950	3,071,451
Certificates of Deposit
Deposits [Line Items]
Time Deposits, $100,000 or More	$ 1,200,000	$ 1,200,000

Short-Term Borrowings and Lon75

Short-Term Borrowings and Long-Term Debt Short Term (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Short-term Debt [Line Items]
Maximum borrowing capacity	$ 1,000,000
Short-term borrowings	497,663	$ 329,719	$ 1,258,629
Collateralized borrowings availability at discount window	1,200,000	1,100,000
Federal funds purchased
Short-term Debt [Line Items]
Short-term borrowings	197,235	6,219	582,436
Maximum month-end outstanding amount	266,338	577,581	848,179
Short-term FHLB advances
Short-term Debt [Line Items]
Short-term borrowings	110,000	70,000	400,000
Maximum month-end outstanding amount	200,000	600,000	600,000
Customer repurchase agreements
Short-term Debt [Line Items]
Short-term borrowings	111,496	158,394	175,621
Maximum month-end outstanding amount	212,509	244,729	215,305
Customer short-term promissory notes
Short-term Debt [Line Items]
Short-term borrowings	78,932	95,106	100,572
Maximum month-end outstanding amount	$ 93,176	$ 95,106	$ 115,129

Short-Term Borrowings and Lon76

Short-Term Borrowings and Long-Term Debt Repurchase Agreements (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Short-term Debt [Line Items]
Amount outstanding as of December 31	$ 497,663	$ 329,719	$ 1,258,629
Customer repurchase agreements
Short-term Debt [Line Items]
Amount outstanding as of December 31	$ 111,496	$ 158,394	$ 175,621
Weighted average interest rate as of December 31	0.15%	0.13%	0.12%
Average amount outstanding during the year	$ 161,093	$ 197,432	$ 186,851
Weighted average interest rate during the year	0.10%	0.10%	0.11%

Short-Term Borrowings and Lon77

Short-Term Borrowings and Long-Term Debt Long Term (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014
Debt Instrument [Line Items]
Federal Home Loan Bank advances and long-term debt	$ (949,542)	$ (1,139,413)
Short-term FHLB advances
Debt Instrument [Line Items]
Federal Home Loan Bank advances and long-term debt	$ (587,756)	(673,107)
Weighted average interest rate	3.90%
Unused borrowing capacity	$ 2,600,000
Subordinated debt
Debt Instrument [Line Items]
Federal Home Loan Bank advances and long-term debt	(350,000)	(300,000)
Intercompany revolving line of credit	100,000
Junior subordinated deferrable interest debentures
Debt Instrument [Line Items]
Federal Home Loan Bank advances and long-term debt	(16,496)	(171,136)
Unamortized discounts and issuance costs
Debt Instrument [Line Items]
Federal Home Loan Bank advances and long-term debt	$ (4,710)	$ (4,830)
Line of Credit
Debt Instrument [Line Items]
Basis spread on variable rate	2.00%

Short-Term Borrowings and Lon78

Short-Term Borrowings and Long-Term Debt Maturiities (Details) $ in Thousands	Dec. 31, 2015USD ($)
Short-Term Borrowings and Long-Term Debt [Abstract]
2,014	$ 235,937
2,015	114,539
2,016	0
2,017	186,760
2,018	142,370
Thereafter	269,936
Long Term Debt Maturities Total	$ 949,542

Short-Term Borrowings and Lon79

Short-Term Borrowings and Long-Term Debt Subordinated Debt (Details)	1 Months Ended				3 Months Ended	12 Months Ended
	Jun. 30, 2015	Nov. 30, 2014USD ($)	May. 31, 2007USD ($)	Mar. 31, 2005USD ($)	Sep. 30, 2015USD ($)	Dec. 31, 2015USD ($)subsidiarytrusts	Dec. 31, 2014USD ($)	Dec. 31, 2013USD ($)
Subordinated Debt [Abstract]
Subsidiary trusts owned by parent | subsidiarytrusts						3
Net Income						$ 149,502,000	$ 157,894,000	$ 161,840,000
Income tax benefit						49,921,000	$ 52,606,000	$ 51,085,000
Junior subordinated deferrable interest debentures
Subordinated Debt [Abstract]
Effective interest rate					6.52%
Extinguishment of debt, amount					$ 150,000,000
Amortization of financing costs					1,800,000
Junior subordinated deferrable interest debentures | Accumulated Net Gain (Loss) from Cash Flow Hedges Attributable to Parent | Reclassification out of Accumulated Other Comprehensive Income
Subordinated Debt [Abstract]
Net Income					2,500,000
Income tax benefit					1,300,000
Junior subordinated deferrable interest debentures | Non-Interest Income (Expense)
Subordinated Debt [Abstract]
Loss on debt extinguishment					5,600,000
Junior subordinated deferrable interest debentures
Subordinated Debt [Abstract]
Subordinated Debt						$ 16,496,000
Junior subordinated deferrable interest debentures | Columbia Bancorp Statutory Trust
Subordinated Debt [Abstract]
Interest Rate						2.88%
Subordinated Debt						$ 6,186,000
Maturity						Jun. 30, 2034
Callable						Mar. 31, 2016
Call Price						1
Junior subordinated deferrable interest debentures | Columbia Bancorp Statutory Trust II
Subordinated Debt [Abstract]
Interest Rate						2.40%
Subordinated Debt						$ 4,124,000
Maturity						Mar. 15, 2035
Callable						Mar. 15, 2016
Call Price						1
Junior subordinated deferrable interest debentures | Columbia Bancorp Statutory Trust III
Subordinated Debt [Abstract]
Interest Rate						2.28%
Subordinated Debt						$ 6,186,000
Maturity						Jun. 15, 2035
Callable						Mar. 15, 2016
Call Price						1
Subordinated debt
Subordinated Debt [Abstract]
Debt instrument, face amount					$ 150,000,000
Debt instrument, term	10 years
Interest Rate	4.50%
Effective interest rate					4.69%
Subordinated debt | May 2017 Subordinated Debt
Subordinated Debt [Abstract]
Debt instrument, term			10 years
Effective interest rate			5.96%
Subordinated Debt			$ 100,000,000
Stated interest rate			5.75%
Subordinated debt | April 2015 Subordinated Debt
Subordinated Debt [Abstract]
Debt instrument, term				10 years
Effective interest rate				5.49%
Subordinated Debt				$ 100,000,000
Subordinated debt | November 2024 Subordinated Debt
Subordinated Debt [Abstract]
Debt instrument, term		10 years
Effective interest rate		4.87%
Subordinated Debt		$ 100,000,000
Stated interest rate		4.50%

Derivative Financial Instrume80

Derivative Financial Instruments Notional Amounts and Fair Values of Derivative Financial Instruments (Details) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Derivatives, Fair Value [Line Items]
Foreign Currency Contract, Fair Value, Net	$ 1,667	$ 160
Interest Rate Locks with Customers
Derivatives, Fair Value [Line Items]
Derivatives, at Fair Value, Net	1,275	1,385
Interest Rate Locks with Customers | Positive fair values
Derivatives, Fair Value [Line Items]
Derivative Asset, Notional Amount	87,781	89,655
Derivative Assets, at Fair Value	1,291	1,391
Interest Rate Locks with Customers | Negative fair values
Derivatives, Fair Value [Line Items]
Derivative Liability, Notional Amount	267	301
Derivative Liabilities, at Fair Value	(16)	(6)
Forward Commitments
Derivatives, Fair Value [Line Items]
Derivatives, at Fair Value, Net	181	(1,164)
Forward Commitments | Positive fair values
Derivatives, Fair Value [Line Items]
Derivative Asset, Notional Amount	69,045	0
Derivative Assets, at Fair Value	205	0
Forward Commitments | Negative fair values
Derivatives, Fair Value [Line Items]
Derivative Liability, Notional Amount	16,193	93,802
Derivative Liabilities, at Fair Value	(24)	(1,164)
Interest Rate Swaps with Customers
Derivatives, Fair Value [Line Items]
Derivatives, at Fair Value, Net	32,860	19,518
Interest Rate Swaps with Customers | Positive fair values
Derivatives, Fair Value [Line Items]
Derivative Asset, Notional Amount	846,490	468,080
Derivative Assets, at Fair Value	32,915	19,716
Interest Rate Swaps with Customers | Negative fair values
Derivatives, Fair Value [Line Items]
Derivative Asset, Notional Amount	8,757	25,418
Derivative Liabilities, at Fair Value	(55)	(198)
Interest Rate Swaps with Dealer Counterparties
Derivatives, Fair Value [Line Items]
Derivatives, at Fair Value, Net	(32,860)	(19,518)
Interest Rate Swaps with Dealer Counterparties | Positive fair values
Derivatives, Fair Value [Line Items]
Derivative Asset, Notional Amount	8,757	25,418
Derivative Assets, at Fair Value	55	198
Interest Rate Swaps with Dealer Counterparties | Negative fair values
Derivatives, Fair Value [Line Items]
Derivative Asset, Notional Amount	846,490	468,080
Derivative Liabilities, at Fair Value	(32,915)	(19,716)
Foreign Exchange Contracts with Customers
Derivatives, Fair Value [Line Items]
Foreign Currency Contract, Fair Value, Net	(70)	369
Foreign Exchange Contracts with Customers | Positive fair values
Derivatives, Fair Value [Line Items]
Derivative Asset, Notional Amount	4,897	11,616
Foreign Currency Contract, Asset, Fair Value	114	810
Foreign Exchange Contracts with Customers | Negative fair values
Derivatives, Fair Value [Line Items]
Derivative Liability, Notional Amount	8,050	5,250
Foreign Currency Contracts, Liability, Fair Value	(184)	(441)
Foreign Exchange Contracts with Correspondent Banks
Derivatives, Fair Value [Line Items]
Foreign Currency Contract, Fair Value, Net	281	(430)
Foreign Exchange Contracts with Correspondent Banks | Positive fair values
Derivatives, Fair Value [Line Items]
Derivative Asset, Notional Amount	9,728	5,287
Foreign Currency Contract, Asset, Fair Value	428	446
Foreign Exchange Contracts with Correspondent Banks | Negative fair values
Derivatives, Fair Value [Line Items]
Derivative Liability, Notional Amount	6,899	13,572
Foreign Currency Contracts, Liability, Fair Value	$ (147)	$ (876)

Derivative Financial Instrume81

Derivative Financial Instruments Fair Value Gains and Losses on Derivative Financial Instruments (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Other Income
Derivatives, Fair Value [Line Items]
Net fair value gains (losses) on derivative financial instruments	$ 1,507	$ (2,037)	$ (4,084)
Interest rate locks with customers | Mortgage Banking Income
Derivatives, Fair Value [Line Items]
Gain (loss) on interest rate derivative instruments	(110)	577	(5,949)
Forward Commitments | Mortgage Banking Income
Derivatives, Fair Value [Line Items]
Gain (loss) on interest rate derivative instruments	1,345	(2,422)	1,466
Interest Rate Swaps with Customers | Other Income
Derivatives, Fair Value [Line Items]
Gain (loss) on interest rate derivative instruments	13,342	20,406	(7,978)
Interest Rate Swaps with Dealer Counterparties | Other Income
Derivatives, Fair Value [Line Items]
Gain (loss) on interest rate derivative instruments	(13,342)	(20,406)	7,978
Foreign Exchange Contracts with Correspondent Banks | Other Income
Derivatives, Fair Value [Line Items]
Gain (loss) on foreign currency derivatives	711	(880)	507
Foreign exchange contracts with customers | Other Income
Derivatives, Fair Value [Line Items]
Gain (loss) on foreign currency derivatives	$ (439)	$ 688	$ (108)

Derivative Financial Instrume82

Derivative Financial Instruments Fair Value Option (Details) - Mortgage loans held for sale - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014
Mortgage Banking Income
Fair Value, Option, Quantitative Disclosures [Line Items]
Fair Value (Loss) Gain	$ (140)	$ 263
Mortgage loans held for sale
Fair Value, Option, Quantitative Disclosures [Line Items]
Cost	16,584	17,080
Fair Value	$ 16,886	$ 17,522

Derivative Financial Instrume83

Derivative Financial Instruments Balance Sheet Offsetting (Details) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Offsetting Assets and Liabilities [Line Items]
Gross asset	$ 33,398	$ 20,360
Financial Instruments	(202)	(652)
Cash collateral	0	0
Net asset	33,196	19,708
Gross liability	33,117	20,790
Financial Instruments	(202)	(652)
Cash Collateral	(31,130)	(19,520)
Net liability	1,785	618
Interest Rate Swap
Offsetting Assets and Liabilities [Line Items]
Gross asset	32,970	19,914
Financial Instruments	(55)	(206)
Cash collateral	0	0
Net asset	32,915	19,708
Gross liability	32,970	19,914
Financial Instruments	(55)	(206)
Cash Collateral	(31,130)	(19,210)
Net liability	1,785	498
Foreign Exchange Contract
Offsetting Assets and Liabilities [Line Items]
Gross asset	428	446
Financial Instruments	(147)	(446)
Cash collateral	0	0
Net asset	281	0
Gross liability	147	876
Financial Instruments	(147)	(446)
Cash Collateral	0	(310)
Net liability	$ 0	$ 120

Regulatory Matters (Details)

Regulatory Matters (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2015USD ($)banks	Dec. 31, 2014USD ($)
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Amount available for dividend distribution without affecting capital adequacy requirements	$ 236,000
Maximum allowed percentage of loans issued to a single affiliate	10.00%
Maximum allowed percentage of aggregate loans issued to all affiliate	20.00%
Significant subidiaries | banks	4
Excess tier one risk based capital	$ 1,000,000	$ 1,000,000
Total Capital [Abstract]
Capital	$ 1,997,926	$ 1,970,569
Capital to risk weighted assets	13.20%	14.70%
Capital required for capital adequacy	$ 1,214,868	$ 1,076,013
Capital required for capital adequacy to risk weighted assets	8.00%	8.00%
Tier One Risk Based Capital [Abstract]
Tier one risk based capital	$ 1,544,495	$ 1,655,853
Tier one risk based capital to risk weighted assets	10.20%	12.30%
Tier one risk based capital required for capital adequacy	$ 911,151	$ 538,007
Tier one risk based capital required for capital adequacy to risk weighted assets	6.00%	4.00%
Common Equity Tier 1 Capital (to Risk-weighted Assets) [Abstract]
Common equity tier 1 capital	$ 1,541,214
Common equity tier 1 risk based capital to risk weighted assets	10.20%
Common equity tier 1 capital required for capital adequacy	$ 683,363
Common equity tier one risk based capital required for capital adequacy to risk weighted assets	4.50%
Tier One Leverage Capital [Abstract]
Tier one leverage capital	$ 1,544,495	$ 1,655,853
Tier one leverage capital to average assets	9.00%	10.00%
Tier one leverage capital required for capital adequacy	$ 688,500	$ 663,421
Tier one leverage capital required for capital adequacy to average assets	4.00%	4.00%
Fulton Bank, N.A.
Total Capital [Abstract]
Capital	$ 1,088,709	$ 1,065,445
Capital to risk weighted assets	12.20%	13.20%
Capital required for capital adequacy	$ 714,734	$ 643,791
Capital required for capital adequacy to risk weighted assets	8.00%	8.00%
Capital required to be well capitalized	$ 893,418	$ 804,739
Capital required to be well capitalized to risk weighted assets	10.00%	10.00%
Tier One Risk Based Capital [Abstract]
Tier one risk based capital	$ 1,000,603	$ 977,547
Tier one risk based capital to risk weighted assets	11.20%	12.10%
Tier one risk based capital required for capital adequacy	$ 536,051	$ 321,896
Tier one risk based capital required for capital adequacy to risk weighted assets	6.00%	4.00%
Tier one risk based capital required to be well capitalized	$ 714,734	$ 482,843
Tier one risk based capital required to be well capitalized to risk weighted assets	8.00%	6.00%
Common Equity Tier 1 Capital (to Risk-weighted Assets) [Abstract]
Common equity tier 1 capital	$ 956,603
Common equity tier 1 risk based capital to risk weighted assets	10.70%
Common equity tier 1 capital required for capital adequacy	$ 402,038
Common equity tier one risk based capital required for capital adequacy to risk weighted assets	4.50%
Common equity tier 1 capital required to be well Capitalized	$ 580,721
Common equity tier 1 capital required to be well capitalized to risk weighted assets	6.50%
Tier One Leverage Capital [Abstract]
Tier one leverage capital	$ 1,000,603	$ 977,547
Tier one leverage capital to average assets	10.20%	10.50%
Tier one leverage capital required for capital adequacy	$ 391,783	$ 373,288
Tier one leverage capital required for capital adequacy to average assets	4.00%	4.00%
Tier one leverage capital required to be well capitalized	$ 489,729	$ 466,610
Tier one leverage capital required to be well capitalized to average assets	5.00%	5.00%
Fulton Bank of New Jersey
Total Capital [Abstract]
Capital	$ 373,465	$ 347,235
Capital to risk weighted assets	12.60%	13.10%
Capital required for capital adequacy	$ 236,691	$ 211,823
Capital required for capital adequacy to risk weighted assets	8.00%	8.00%
Capital required to be well capitalized	$ 295,864	$ 264,779
Capital required to be well capitalized to risk weighted assets	10.00%	10.00%
Tier One Risk Based Capital [Abstract]
Tier one risk based capital	$ 336,319	$ 313,843
Tier one risk based capital to risk weighted assets	11.40%	11.90%
Tier one risk based capital required for capital adequacy	$ 177,518	$ 105,911
Tier one risk based capital required for capital adequacy to risk weighted assets	6.00%	4.00%
Tier one risk based capital required to be well capitalized	$ 236,691	$ 158,867
Tier one risk based capital required to be well capitalized to risk weighted assets	8.00%	6.00%
Common Equity Tier 1 Capital (to Risk-weighted Assets) [Abstract]
Common equity tier 1 capital	$ 336,319
Common equity tier 1 risk based capital to risk weighted assets	11.40%
Common equity tier 1 capital required for capital adequacy	$ 133,139
Common equity tier one risk based capital required for capital adequacy to risk weighted assets	4.50%
Common equity tier 1 capital required to be well Capitalized	$ 192,311
Common equity tier 1 capital required to be well capitalized to risk weighted assets	6.50%
Tier One Leverage Capital [Abstract]
Tier one leverage capital	$ 336,319	$ 313,843
Tier one leverage capital to average assets	9.50%	9.40%
Tier one leverage capital required for capital adequacy	$ 141,257	$ 133,580
Tier one leverage capital required for capital adequacy to average assets	4.00%	4.00%
Tier one leverage capital required to be well capitalized	$ 176,572	$ 166,975
Tier one leverage capital required to be well capitalized to average assets	5.00%	5.00%
The Columbia Bank
Total Capital [Abstract]
Capital	$ 211,355	$ 203,109
Capital to risk weighted assets	13.70%	13.50%
Capital required for capital adequacy	$ 123,260	$ 119,934
Capital required for capital adequacy to risk weighted assets	8.00%	8.00%
Capital required to be well capitalized	$ 154,075	$ 149,917
Capital required to be well capitalized to risk weighted assets	10.00%	10.00%
Tier One Risk Based Capital [Abstract]
Tier one risk based capital	$ 192,090	$ 184,331
Tier one risk based capital to risk weighted assets	12.50%	12.30%
Tier one risk based capital required for capital adequacy	$ 92,445	$ 59,967
Tier one risk based capital required for capital adequacy to risk weighted assets	6.00%	4.00%
Tier one risk based capital required to be well capitalized	$ 123,260	$ 89,950
Tier one risk based capital required to be well capitalized to risk weighted assets	8.00%	6.00%
Common Equity Tier 1 Capital (to Risk-weighted Assets) [Abstract]
Common equity tier 1 capital	$ 192,090
Common equity tier 1 risk based capital to risk weighted assets	12.50%
Common equity tier 1 capital required for capital adequacy	$ 69,334
Common equity tier one risk based capital required for capital adequacy to risk weighted assets	4.50%
Common equity tier 1 capital required to be well Capitalized	$ 100,149
Common equity tier 1 capital required to be well capitalized to risk weighted assets	6.50%
Tier One Leverage Capital [Abstract]
Tier one leverage capital	$ 192,090	$ 184,331
Tier one leverage capital to average assets	9.70%	9.40%
Tier one leverage capital required for capital adequacy	$ 79,618	$ 78,186
Tier one leverage capital required for capital adequacy to average assets	4.00%	4.00%
Tier one leverage capital required to be well capitalized	$ 99,523	$ 97,733
Tier one leverage capital required to be well capitalized to average assets	5.00%	5.00%
Lafayette Ambassador Bank
Total Capital [Abstract]
Capital	$ 172,345	$ 167,800
Capital to risk weighted assets	14.10%	15.90%
Capital required for capital adequacy	$ 97,792	$ 84,407
Capital required for capital adequacy to risk weighted assets	8.00%	8.00%
Capital required to be well capitalized	$ 122,240	$ 105,508
Capital required to be well capitalized to risk weighted assets	10.00%	10.00%
Tier One Risk Based Capital [Abstract]
Tier one risk based capital	$ 162,092	$ 154,817
Tier one risk based capital to risk weighted assets	13.30%	14.70%
Tier one risk based capital required for capital adequacy	$ 73,344	$ 42,203
Tier one risk based capital required for capital adequacy to risk weighted assets	6.00%	4.00%
Tier one risk based capital required to be well capitalized	$ 97,792	$ 63,305
Tier one risk based capital required to be well capitalized to risk weighted assets	8.00%	6.00%
Common Equity Tier 1 Capital (to Risk-weighted Assets) [Abstract]
Common equity tier 1 capital	$ 162,092
Common equity tier 1 risk based capital to risk weighted assets	13.30%
Common equity tier 1 capital required for capital adequacy	$ 55,008
Common equity tier one risk based capital required for capital adequacy to risk weighted assets	4.50%
Common equity tier 1 capital required to be well Capitalized	$ 79,456
Common equity tier 1 capital required to be well capitalized to risk weighted assets	6.50%
Tier One Leverage Capital [Abstract]
Tier one leverage capital	$ 162,092	$ 154,817
Tier one leverage capital to average assets	11.00%	10.80%
Tier one leverage capital required for capital adequacy	$ 59,152	$ 57,132
Tier one leverage capital required for capital adequacy to average assets	4.00%	4.00%
Tier one leverage capital required to be well capitalized	$ 73,940	$ 71,416
Tier one leverage capital required to be well capitalized to average assets	5.00%	5.00%

Income Taxes Expense (Benefit)

Income Taxes Expense (Benefit) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Current tax expense:
Federal	$ 34,455	$ 32,957	$ 38,573
State	2,042	1,126	687
Total	36,497	34,083	39,260
Deferred Income Tax Expense (Benefit), Continuing Operations [Abstract]
Federal	12,752	18,523	15,357
State	672	0	(3,532)
Total	13,424	18,523	11,825
Income tax expense	$ 49,921	$ 52,606	$ 51,085

Income Taxes Effective Tax Rate

Income Taxes Effective Tax Rate (Details)	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Effective Income Tax Rate Reconciliation, Percent [Abstract]
Statutory tax rate	35.00%	35.00%	35.00%
Tax-exempt income	(6.00%)	(5.40%)	(5.20%)
Tax Credit Investments	(5.20%)	(4.90%)	(4.90%)
Change in valuation allowance	(0.90%)	(0.80%)	(2.00%)
Bank owned life insurance	(0.60%)	(0.50%)	(0.50%)
State income taxes, net of federal benefit	1.90%	1.20%	1.10%
Executive compensation	0.10%	0.10%	0.10%
Other, net	0.70%	(0.30%)	0.40%
Effective income tax rate	25.00%	24.40%	24.00%

Income Taxes Deferred Tax Asset

Income Taxes Deferred Tax Assetss And Liabilities (Details) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Deferred tax assets:
Allowance for credit losses	$ 62,846	$ 68,407
Postretirement and defined benefit plans	13,070	16,017
State loss carryforwards	11,170	12,960
Other accrued expenses	11,839	12,486
Other-than-temporary impairment of investments	5,501	8,126
Other accrued expenses	7,142	7,335
Unrealized holding losses on securities available for sale	3,250	0
Other	10,165	8,433
Total gross deferred tax assets	124,983	133,764
Deferred Tax Liabilities, Gross [Abstract]
Mortgage servicing rights	14,582	15,004
Direct leasing	20,309	12,399
Acquisition premiums/discounts	8,897	8,200
Premises and equipment	5,955	7,897
Unrealized holding gains on securities available for sale	0	3,949
Intangible assets	1,614	1,382
Other	9,593	7,960
Total gross deferred tax liabilities	60,950	56,791
Net deferred tax asset, before valuation allowance	64,033	76,973
Valuation allowance	(8,359)	(10,187)
Net deferred tax asset	55,674	66,786
State and local operating loss carryforwards	424,000	$ 451,000
Capital loss carryforwards	3,400
Deferred tax assets other than temporary impairment losses investment securities	$ 5,300

Income Taxes Unrecognized Benef

Income Taxes Unrecognized Benefit (Details) - USD ($)	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Reconciliation of Unrecognized Tax Benefits [Roll Forward]
Balance at beginning of year	$ 1,944,000	$ 1,651,000	$ 1,453,000
Prior period tax positions	0	188,000	0
Current period tax positions	492,000	269,000	318,000
Lapse of statute of limitations	(63,000)	(164,000)	(120,000)
Balance at end of year	2,373,000	1,944,000	$ 1,651,000
Lapse of statute of limitations expected to reverse in 2014	391,000
Unrecognized tax benefits that would impact effective tax rate	806,000
Unrecognized tax benefits, interest and penalties income	46,000
Income tax penalties and interest accrued	$ 531,000	$ 485,000

Employee Benefit Plans Benefits

Employee Benefit Plans Benefits (Details) - USD ($) $ in Thousands	Feb. 01, 2014	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Defined Benefit Plan Disclosure [Line Items]
Compensation expense		$ 10,525	$ 10,157	$ 14,284
Amount to be amortized from accumulated other comprehensive income (loss) in next twelve months		2,400
Other Postretirement Benefit Plan | 401k Plan
Defined Benefit Plan Disclosure [Line Items]
Compensation expense		$ 6,423	8,643	11,807
Maximum percentage of eligible employee’s covered compensation		5.00%
Percentage of plan vested		100.00%
Pension Plan
Defined Benefit Plan Disclosure [Line Items]
Compensation expense		$ 4,102	1,514	$ 2,477
Other Postretirement Benefit Plan
Defined Benefit Plan Disclosure [Line Items]
Effect of curtailment	$ 3,400	0	$ 3,358
Plan amendment		$ 2,500

Employee Benefit Plans Net Peri

Employee Benefit Plans Net Periodic Benefit Cost (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Pension Plans
Defined Benefit Plan Disclosure [Line Items]
Service cost	$ 579	$ 367	$ 202
Interest cost	3,405	3,413	3,087
Expected return on assets	(3,009)	(3,240)	(3,194)
Net amortization and deferral	3,127	974	2,382
Net periodic benefit cost	4,102	1,514	2,477
Other Postretirement Benefit Plans
Defined Benefit Plan Disclosure [Line Items]
Service cost	0	15	228
Interest cost	206	206	322
Expected return on assets	0	0	(1)
Net amortization and deferral	(258)	(347)	(363)
Net periodic benefit cost	$ (52)	$ (126)	$ 186

Employee Benefit Plans Projecte

Employee Benefit Plans Projected Benefit Obligation (Details) - USD ($) $ in Thousands	Feb. 01, 2014	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Fair value of plan assets at beginning of year		$ 51,730
Fair value of plan assets at end of year		46,971	$ 51,730
Other Postretirement Benefit Plans
Defined Benefit Plan, Change in Benefit Obligation [Roll Forward]
Projected benefit obligation at beginning of year		5,552	8,169
Service cost		0	15	$ 228
Interest cost		206	206	322
Benefit payments		(251)	(209)
Change due to change in assumptions		(2,821)	1,261
Effect of curtailment	$ (3,400)	0	(3,358)
Experience gain		189	(532)
Projected benefit obligation at end of year		2,875	5,552	8,169
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Fair value of plan assets at beginning of year		8	23
Employer contributions		258	194
Benefit payments		(251)	(209)
Fair value of plan assets at end of year		15	8	23
Pension Plans
Defined Benefit Plan, Change in Benefit Obligation [Roll Forward]
Projected benefit obligation at beginning of year		93,079	73,362
Service cost		579	367	202
Interest cost		3,405	3,413	3,087
Benefit payments		(3,904)	(5,164)
Change due to change in assumptions		(7,722)	22,055
Experience gain		(701)	(954)
Projected benefit obligation at end of year		84,736	93,079	73,362
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Fair value of plan assets at beginning of year		51,730	55,448
Actual return on assets		(855)	1,446
Benefit payments		(3,904)	(5,164)
Fair value of plan assets at end of year		$ 46,971	$ 51,730	$ 55,448

Employee Benefit Plans Funded S

Employee Benefit Plans Funded Status (Details) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Fair value of plan assets	$ 46,971	$ 51,730
Pension Plans
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Projected benefit obligation	(84,736)	(93,079)	$ (73,362)
Fair value of plan assets	46,971	51,730	55,448
Funded status	(37,765)	(41,349)
Other Postretirement Benefit Plans
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Projected benefit obligation	(2,875)	(5,552)	(8,169)
Fair value of plan assets	15	8	$ 23
Funded status	$ (2,860)	$ (5,544)

Employee Benefit Plans Unrecogn

Employee Benefit Plans Unrecognized loss (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Accumulated other comprehensive loss	$ (17,722)	$ (37,341)	$ 5,675
Unrecognized gains arising in current year	4,680	(13,168)	8,369
Accumulated other comprehensive loss	(22,017)	(17,722)	(37,341)
Accumulated Defined Benefit Plans Adjustment [Member]
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Accumulated other comprehensive loss	(22,505)	(8,801)	(18,482)
Accumulated other comprehensive loss	(15,961)	(22,505)	(8,801)
Pension Plans | Accumulated Defined Benefit Plans Adjustment, Net Unamortized Gain (Loss) [Member]
Gross of tax
AOCI before Tax, Attributable to Parent	38,082	16,161
Reclass adjustment for postretirement plan gain included in net income	(3,127)	(974)
Other Comprehensive Income (Loss), Pension and Other Postretirement Benefit Plans, Net Unamortized Gain (Loss) Arising During Period, before Tax	(4,559)	22,895
AOCI before Tax, Attributable to Parent	30,396	38,082	16,161
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Accumulated other comprehensive loss	24,754	10,505
Recognized component of periodic pension cost	(2,033)	(633)
Unrecognized gains arising in current year	(2,963)	14,882
Accumulated other comprehensive loss	19,758	24,754	10,505
Other Postretirement Benefit Plans | Accumulated Defined Benefit Plans Adjustment, Net Prior Service Cost [Member]
Gross of tax
AOCI before Tax, Attributable to Parent	(3,123)	(1,484)
Reclass adjustment for postretirement plan gain included in net income	258	32
Other Comprehensive Income (Loss), Pension and Other Postretirement Benefit Plans, Net Unamortized Gain (Loss) Arising During Period, before Tax	(2,469)
Other Comprehensive Income (Loss), Pension and Other Postretirement Benefit Plans, Net Unamortized Gain (Loss) Arising During Period, Prior to Curtailment, before Tax		0
Other Comprehensive Income (Loss), Finalization of Pension and Other Postretirement Benefit Plan Valuation, before Tax		1,452
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI, Pension and Other Postretirement Benefit Plans, After Curtailment, before Tax		235
Other Comprehensive Income (Loss), Pension and Other Postretirement Benefit Plans, Net Unamortized Gain (Loss) Arising During Period, After Curtailment, before Tax		(3,358)
AOCI before Tax, Attributable to Parent	(5,334)	(3,123)	(1,484)
Other Postretirement Benefit Plans | Accumulated Defined Benefit Plans Adjustment, Net Unamortized Gain (Loss) [Member]
Gross of tax
AOCI before Tax, Attributable to Parent	(336)	(1,137)
Reclass adjustment for postretirement plan gain included in net income	0	10
Other Comprehensive Income (Loss), Pension and Other Postretirement Benefit Plans, Net Unamortized Gain (Loss) Arising During Period, before Tax	(172)
Other Comprehensive Income (Loss), Pension and Other Postretirement Benefit Plans, Net Unamortized Gain (Loss) Arising During Period, Prior to Curtailment, before Tax		(313)
Other Comprehensive Income (Loss), Finalization of Pension and Other Postretirement Benefit Plan Valuation, before Tax		0
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI, Pension and Other Postretirement Benefit Plans, After Curtailment, before Tax		70
Other Comprehensive Income (Loss), Pension and Other Postretirement Benefit Plans, Net Unamortized Gain (Loss) Arising During Period, After Curtailment, before Tax		1,034
AOCI before Tax, Attributable to Parent	(508)	(336)	(1,137)
Other Postretirement Benefit Plans | Accumulated Defined Benefit Plans Adjustment [Member]
Gross of tax
AOCI before Tax, Attributable to Parent	(3,459)	(2,621)
Reclass adjustment for postretirement plan gain included in net income	258	42
Other Comprehensive Income (Loss), Pension and Other Postretirement Benefit Plans, Net Unamortized Gain (Loss) Arising During Period, before Tax	(2,641)
Other Comprehensive Income (Loss), Pension and Other Postretirement Benefit Plans, Net Unamortized Gain (Loss) Arising During Period, Prior to Curtailment, before Tax		(313)
Other Comprehensive Income (Loss), Finalization of Pension and Other Postretirement Benefit Plan Valuation, before Tax		1,452
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI, Pension and Other Postretirement Benefit Plans, After Curtailment, before Tax		305
Other Comprehensive Income (Loss), Pension and Other Postretirement Benefit Plans, Net Unamortized Gain (Loss) Arising During Period, After Curtailment, before Tax		(2,324)
AOCI before Tax, Attributable to Parent	(5,842)	(3,459)	(2,621)
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Accumulated other comprehensive loss	(2,249)	(1,704)
Recognized component of periodic pension cost	168
Unrecognized gains arising in current year	(1,717)
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI, Pension and Other Postretirement Benefit Plans, Prior to Curtailment, Net of Tax		26
Other Comprehensive Income (Loss), Pension and Other Postretirement Benefit Plans, Net Unamortized Gain (Loss) Arising During Period, Prior to Curtailment, Net of Tax		(203)
Other Comprehensive (Income) Loss, Reclassification Adjustment from AOCI, Pension and Other Postretirement Benefit Plans, Net of Tax		944
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI, Pension and Other Postretirement Benefit Plans, After Curtailment, Net of Tax		199
Other Comprehensive Income (Loss), Pension and Other Postretirement Benefit Plans, Net Unamortized Gain (Loss) Arising During Period, After Curtailment, Net of Tax		(1,511)
Accumulated other comprehensive loss	$ (3,798)	$ (2,249)	$ (1,704)

Employee Benefit Plans Health T

Employee Benefit Plans Health Trends (Details) - Other Postretirement Benefit Plans $ in Thousands	12 Months Ended
	Dec. 31, 2015USD ($)
Defined Benefit Plan Disclosure [Line Items]
Health care cost trend rate assumed for next fiscal year	6.50%
Ultimate health care cost trend rate	6.00%
Effect of 1% point increase on accumulated postretirement benefit obligation	$ 385
Effect of 1% point increase on service and interest cost components	15
Effect of 1% point decrease on accumulated postretirement benefit obligation	340
Effect of 1% point decrease on service and interest cost components	$ 15

Employee Benefit Plans Rates (D

Employee Benefit Plans Rates (Details)	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Pension Plans
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Discount rate-projected benefit obligation	4.25%	3.75%	4.75%
Expected long-term rate of return on plan assets	6.00%	6.00%	6.00%
Other Postretirement Benefit Plans
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Discount rate-projected benefit obligation	4.25%	3.75%	4.75%
Expected long-term rate of return on plan assets	3.00%	3.00%	3.00%
Percentage of Increase threshold using citigroup average life discount rate table	0.25%

Employee Benefit Plans Fair Val

Employee Benefit Plans Fair Value Of Plan Assets (Details) - USD ($) $ in Thousands	Feb. 01, 2014	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Fair value of plan assets		$ 46,971	$ 51,730
Actual plan asset allocations		100.00%	100.00%
Equity securities
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Target allocation percentage of assets, equity securities		25.00%
Fair value of plan assets		$ 14,619	$ 14,521
Actual plan asset allocations		31.10%	28.10%
Equity Funds
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Fair value of plan assets		$ 8,269	$ 8,503
Mutual Funds
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Fair value of plan assets		$ 6,350	6,018
Debt securities
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Target allocation percentage of assets, equity securities		55.00%
Fair value of plan assets		$ 24,404	$ 27,629
Actual plan asset allocations		52.00%	53.40%
Money Market Funds
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Fair value of plan assets		$ 8,196	$ 8,957
Fixed Income Funds
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Fair value of plan assets		9,578	9,845
Corporate debt securities
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Fair value of plan assets		3,749	4,971
US Government Agencies Debt Securities
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Fair value of plan assets		$ 2,881	3,856
Other Alternative Investment Mutual Funds
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Target allocation percentage of assets, equity securities		20.00%
Fair value of plan assets		$ 7,948	$ 9,580
Actual plan asset allocations		16.90%	18.50%
Other Postretirement Benefit Plans
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Recognized net gain (loss) due to curtailments	$ 1,500
Effect of curtailment	$ 3,400	$ 0	$ 3,358
Fair value of plan assets		$ 15	$ 8	$ 23

Employee Benefit Plans Expected

Employee Benefit Plans Expected benefits (Details) $ in Thousands	Dec. 31, 2015USD ($)
Pension Plans
Defined Benefit Plan, Estimated Future Benefit Payments [Abstract]
2,016	$ 3,125
2,017	3,367
2,018	3,727
2,019	3,838
2,020	4,227
2021-2025	23,903
Defined Benefit Plan Expected Future Benefit Payments	42,187
Other Postretirement Benefit Plans
Defined Benefit Plan, Estimated Future Benefit Payments [Abstract]
2,016	342
2,017	317
2,018	296
2,019	275
2,020	255
2021-2025	995
Defined Benefit Plan Expected Future Benefit Payments	$ 2,480

Shareholders' Equity (Details)

Shareholders' Equity (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Before-Tax Amount
Unrealized loss on securities	$ (11,872)	$ 51,901	$ (76,319)
Reclassification adjustment for securities gains included in net income (1)	(9,066)	(2,041)	(8,004)
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI on Derivatives, before Tax	3,778
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI on Derivatives, Tax	(1,322)
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI on Derivatives, Net of Tax	2,456	0	0
Non-credit related unrealized gains on other-than-temporarily impaired debt securities	368	1,200	3,042
Unrealized gain on derivative financial instruments	115	209	209
Unrecognized pension and postretirement cost	7,200	(20,258)	12,875
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI, Pension and Other Postretirement Benefit Plans, for Net Gain (Loss), before Tax		(1,452)
Amortization of net unrecognized pension and postretirement income (3)	2,869	627	2,019
Total Other Comprehensive Loss	(6,608)	30,186	(66,178)
Tax Effect
Unrealized loss on securities	4,155	(18,167)	26,712
Reclassification adjustment for securities gains included in net income (1)	3,174	714	2,801
Non-credit related unrealized gains on other-than-temporarily impaired debt securities	(129)	(420)	(1,065)
Unrealized gain on derivative financial instruments	(40)	(73)	(73)
Unrecognized pension and postretirement cost	(2,520)	7,090	(4,506)
Reclass adjustment for postretirement plan gain included in net income, tax		508
Amortization of net unrecognized pension and postretirement income (3)	(1,005)	(219)	(707)
Total Other Comprehensive Loss	2,313	(10,567)	23,162
Net of Tax Amount
Unrealized loss on securities	(7,717)	33,734	(49,607)
Reclassification adjustment for securities gains included in net income (1)	(5,892)	(1,327)	(5,203)
Non-credit related unrealized gains on other-than-temporarily impaired debt securities	239	780	1,977
Unrealized gain on derivative financial instruments	75	136	136
Unrecognized pension and postretirement cost	4,680	(13,168)	8,369
Reclass adjustment for postretirement plan gain included in net income, net of tax	0	(944)	0
Amortization of net unrecognized pension and postretirement income (3)	1,864	408	1,312
Total Other Comprehensive Loss	$ (4,295)	$ 19,619	$ (43,016)

Shareholders' Equity Changes in

Shareholders' Equity Changes in Accumulated Other Comprehensive Income (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]
Accumulated other comprehensive loss	$ (17,722)	$ (37,341)	$ 5,675
Other Comprehensive Income (Loss), before Reclassifications, Net of Tax	(2,798)	20,402	(39,261)
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax	(3,953)	(783)	(3,755)
Reclassification adjustment for loss on derivative financial instruments included in net income	2,456	0	0
Accumulated other comprehensive loss	(22,017)	(17,722)	(37,341)
Accumulated Net Unrealized Investment Gain (Loss) [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]
Accumulated other comprehensive loss	5,980	(27,510)	26,362
Other Comprehensive Income (Loss), before Reclassifications, Net of Tax	(7,717)	33,734	(49,607)
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax	(4,762)	(244)	(4,265)
Accumulated other comprehensive loss	(6,499)	5,980	(27,510)
Accumulated Other-than-Temporary Impairment [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]
Accumulated other comprehensive loss	1,349	1,652	613
Other Comprehensive Income (Loss), before Reclassifications, Net of Tax	239	780	1,977
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax	(1,130)	(1,083)	(938)
Accumulated other comprehensive loss	458	1,349	1,652
Accumulated Defined Benefit Plans Adjustment [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]
Accumulated other comprehensive loss	(22,505)	(8,801)	(18,482)
Other Comprehensive Income (Loss), before Reclassifications, Net of Tax	4,680	(14,112)	8,369
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax	1,864	408	1,312
Accumulated other comprehensive loss	(15,961)	(22,505)	(8,801)
Accumulated Net Gain (Loss) from Cash Flow Hedges Attributable to Parent
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]
Accumulated other comprehensive loss	(2,546)	(2,682)	(2,818)
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax	75	136	136
Reclassification adjustment for loss on derivative financial instruments included in net income	2,456
Accumulated other comprehensive loss	$ (15)	$ (2,546)	$ (2,682)

Shareholders' Equity Common Sto

Shareholders' Equity Common Stock Repurchase Plans (Details) - USD ($)	1 Months Ended			6 Months Ended	12 Months Ended
	Oct. 31, 2015	Apr. 30, 2015	Nov. 30, 2014	Apr. 30, 2015	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Equity, Class of Treasury Stock [Line Items]
Common stock repurchase amount					$ 50,000,000	$ 175,255,000	$ 90,927,000
Acquisition of treasury stock					(50,000,000)	(175,255,000)	(90,927,000)
Common Stock
Equity, Class of Treasury Stock [Line Items]
Common stock repurchase amount						$ 95,200,000	$ 90,900,000
Average cost per share of treasury stock acquired (usd per share)						$ 11.91	$ 11.37
Acquisition of treasury stock (in shares)						(8,000,000)	(8,000,000)
Common Stock | Accelerated Stock Repurchase Program
Equity, Class of Treasury Stock [Line Items]
Common stock repurchase amount		$ 100,000,000
Average cost per share of treasury stock acquired (usd per share)				$ 12.05
Treasury stock, value			$ 100,000,000
Acquisition of treasury stock			$ (100,000,000)
Acquisition of treasury stock (in shares)		(1,800,000)	(6,500,000)	(8,300,000)
Percent of common shares outstanding, expected to be delivered			80.00%
Common Stock | April 2015 Stock Repurchase Program [Member]
Equity, Class of Treasury Stock [Line Items]
Common stock repurchase amount					$ 50,000,000
Average cost per share of treasury stock acquired (usd per share)					$ 12.57
Treasury stock, value		$ 50,000,000		$ 50,000,000
Acquisition of treasury stock (in shares)					(4,000,000)
Percent of common shares outstanding, expected to be delivered		2.30%
Common Stock | October 2015 Stock Repurchase Program [Member]
Equity, Class of Treasury Stock [Line Items]
Treasury stock, value	$ 50,000,000
Acquisition of treasury stock (in shares)					0
Percent of common shares outstanding, expected to be delivered	2.30%

Stock-Based Compensation Pla101

Stock-Based Compensation Plans Compensation Expense and Related Tax Benefits (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation	$ 5,938	$ 5,865	$ 5,330
Statutory tax rate	35.00%	35.00%	35.00%
Restricted Stock/RSUs/PSUs
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation	$ 4,646	$ 4,345	$ 3,705
Tax benefit	(1,626)	(1,510)	(1,297)
Stock-based compensation, net of tax	$ 3,020	2,835	$ 2,408
Non Qualified Stock Options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted	0		50,000
Stock Options And Restricted Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation	$ 5,938	5,865	$ 5,330
Tax benefit	(2,011)	(1,608)	(1,475)
Stock-based compensation, net of tax	$ 3,927	$ 4,257	$ 3,855

Stock-Based Compensation Pla102

Stock-Based Compensation Plans Options Activity (Details) - Stock Options - USD ($)	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Stock Options
Outstanding as of December 31, 2014	4,302,464
Granted		288,626	617,869
Exercised	(490,151)
Forfeited	(83,878)
Expired	(748,348)
Outstanding as of December 31, 2015	2,980,087	4,302,464
Exercisable as of December 31, 2015	2,630,235
Weighted Average Exercise Price
Outstanding as of December 31, 2013 (usd per share)	$ 12.89
Exercised (usd per share)	10.21
Forfeited (usd per share)	14.09
Expired (usd per share)	16.80
Outstanding as of December 31, 2014 (usd per share)	12.31	$ 12.89
Exercisable as of December 31, 2014 (usd per share)	$ 12.34
Additional Disclosures [Abstract]
Outstanding, Weighted Average Remaining Contractual Term	4 years 1 month 6 days
Exercisable, Weighted Average Remaining Contractual Term	3 years 7 months 6 days
Outstanding, Aggregate Intrinsic Value	$ 4,600,000
Exercisable, Aggregate Intrinsic Value	4,300,000
Number of options exercised	490,151	$ 215,047	$ 451,102
Total intrinsic value of options exercised	1,442,000	568,000	1,612,000
Cash received from options exercised	4,936,000	2,068,000	3,650,000
Tax deduction realized from options exercised	$ 1,389,000	$ 530,000	$ 1,416,000

Stock-Based Compensation Pla103

Stock-Based Compensation Plans Nonvested (Details)	12 Months Ended
	Dec. 31, 2015$ / sharesshares
Nonvested Stock Options
Options
Nonvested as of December 31, 2014 | shares	755,964
Granted | shares	0
Vested | shares	(393,862)
Forfeited | shares	(12,250)
Nonvested as of December 31, 2015 | shares	349,852
Weighted Average Grant Date Fair Value
Nonvested as of December 31, 2013 (usd per share) | $ / shares	$ 2.68
Granted (usd per share) | $ / shares	0
Vested (usd per share) | $ / shares	2.56
Forfeited (usd per share) | $ / shares	2.77
Nonvested as of December 31, 2014 (usd per share) | $ / shares	$ 2.82
Restricted Stock/RSUs/PSUs
Options
Nonvested as of December 31, 2014 | shares	1,063,087
Granted | shares	581,719
Vested | shares	(250,807)
Forfeited | shares	(5,610)
Nonvested as of December 31, 2015 | shares	1,388,389
Weighted Average Grant Date Fair Value
Nonvested as of December 31, 2013 (usd per share) | $ / shares	$ 11.83
Granted (usd per share) | $ / shares	12.04
Vested (usd per share) | $ / shares	10.48
Forfeited (usd per share) | $ / shares	12.05
Nonvested as of December 31, 2014 (usd per share) | $ / shares	$ 12.16

Stock-Based Compensation Pla104

Stock-Based Compensation Plans Assumptions (Details)	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Stock Options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Risk-free interest rate		2.44%	1.27%
Volatility of Corporation’s stock		28.05%	27.64%
Expected dividend yield		2.36%	2.48%
Expected life of options		7 years	7 years
Restricted Stock/RSUs/PSUs
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Risk-free interest rate	0.86%
Volatility of Corporation’s stock	20.08%
Expected life of options	3 years

Stock-Based Compensation Pla105

Stock-Based Compensation Plans ESPP (Details) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Percentage of fair value at purchase date	85.00%
Discount from market price, purchase date	15.00%
ESPP shares purchased	121,890	132,640	141,608
Average purchase price per share (85% of market value)	$ 10.86	$ 10.31	$ 10.02
Compensation expense recognized (in thousands)	$ 234	$ 241	$ 251

Stock-Based Compensation Pla106

Stock-Based Compensation Plans Narrative (Details) - USD ($) $ / shares in Units, $ in Millions	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Statutory tax rate	35.00%	35.00%	35.00%
Employee Service Share-based Compensation, Nonvested Awards, Total Compensation Cost Not yet Recognized	$ 7.8
Employee Service Share-based Compensation, Nonvested Awards, Total Compensation Cost Not yet Recognized, Period for Recognition	2 years
Percentage of fair value at purchase date	85.00%
Discount from market price, purchase date	15.00%
Employee Option Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares reserved for future grants under the stock option and compensation plan	11,500,000
Directors' Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares reserved for future grants under the stock option and compensation plan	396,000
Non Qualified Stock Options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Net of Forfeitures	0		50,000
Stock Options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Weighted Average Grant Date Fair Value		$ 3.14	$ 2.49
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Net of Forfeitures		288,626	617,869
Restricted Stock/RSUs/PSUs
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Weighted Average Grant Date Fair Value	$ 10.66

Leases (Details)

Leases (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Leases [Abstract]
Rent expense	$ 18,100	$ 18,100	$ 19,000
Operating Leases, Future Minimum Payments Due, Fiscal Year Maturity [Abstract]
2,014	16,325
2,015	15,487
2,016	13,046
2,017	10,995
2,018	9,836
Thereafter	46,819
Total	$ 112,508

Outstanding Commitments to Exte

Outstanding Commitments to Extend Credit and Letters of Credit (Details) - Reserve for Off-balance Sheet Activities - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Valuation allowances and reserves	$ 414,258	$ 414,769
Commercial and other
Valuation allowances and reserves	3,518,960	2,972,105
Home equity
Valuation allowances and reserves	1,300,062	1,291,596
Commerical mortgage and construction
Valuation allowances and reserves	965,116	558,662
Total commitments to extend credit
Valuation allowances and reserves	5,784,138	4,822,363
Standby letters of credit
Valuation allowances and reserves	374,729	382,465
Commercial letters of credit
Valuation allowances and reserves	39,529	32,304
Residential Mortgage
Valuation allowances and reserves	$ 2,600	$ 3,200

Commitments and Contingencies N

Commitments and Contingencies Narrative (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Loss Contingencies [Line Items]
Operating risk loss	$ 3,624	$ 4,271	$ 9,290
Residential mortgage principal balance repurchase request received	543
Residential mortgage principal balance FHLB credit enhancement	126,000
Commitments to extend credit, overdraft protection	330,600
Residential mortgage repurchase reserves FHLB credit enhancement	1,800	2,300
Reserve for Off-balance Sheet Activities
Loss Contingencies [Line Items]
Valuation allowances and reserves	414,258	414,769
Reserve for Off-balance Sheet Activities | Total commitments to extend credit
Loss Contingencies [Line Items]
Valuation allowances and reserves	5,784,138	4,822,363
Reserve for Off-balance Sheet Activities | Total commitments to extend credit | Scenario, Previously Reported
Loss Contingencies [Line Items]
Valuation allowances and reserves		4,400,000
Reserve for Off-balance Sheet Activities | Commercial – industrial, financial and agricultural
Loss Contingencies [Line Items]
Valuation allowances and reserves	3,518,960	2,972,105
Reserve for Off-balance Sheet Activities | Commercial – industrial, financial and agricultural | Scenario, Previously Reported
Loss Contingencies [Line Items]
Valuation allowances and reserves		2,700,000
Reserve for Off-balance Sheet Activities | Commercial Loans, Commerical Mortgages, Constructions Loans
Loss Contingencies [Line Items]
Valuation allowances and reserves	965,116	558,662
Reserve for Off-balance Sheet Activities | Commercial Loans, Commerical Mortgages, Constructions Loans | Scenario, Previously Reported
Loss Contingencies [Line Items]
Valuation allowances and reserves		400,000
Reserve for Off-balance Sheet Activities | Residential Mortgage
Loss Contingencies [Line Items]
Valuation allowances and reserves	$ 2,600	$ 3,200

Fair Value Measurements Assets

Fair Value Measurements Assets and Liabilities Measured at Fair Value on a Recurring Basis (Details) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Securities available for sale	$ 2,484,773	$ 2,323,371
Equity securities
Securities available for sale	21,514	47,623
U.S. Government securities
Securities available for sale	0	200
U.S. Government sponsored agency securities
Securities available for sale	25,136	214
State and municipal securities
Securities available for sale	262,765	245,215
Corporate debt securities
Securities available for sale	96,955	98,034
Collateralized mortgage obligations
Securities available for sale	821,509	902,313
Mortgage-backed securities
Securities available for sale	1,158,835	928,831
Auction rate securities
Securities available for sale	98,059	100,941
Fair Value, Measurements, Recurring
Mortgage loans held for sale	16,886	17,522
Securities available for sale	2,484,773	2,323,371
Other financial assets	50,594	38,987
Total assets	2,552,253	2,379,880
Other financial liabilities	48,924	38,821
Fair Value, Measurements, Recurring | Equity securities
Securities available for sale	21,514	47,623
Fair Value, Measurements, Recurring | U.S. Government securities
Securities available for sale		200
Fair Value, Measurements, Recurring | U.S. Government sponsored agency securities
Securities available for sale	25,136	214
Fair Value, Measurements, Recurring | State and municipal securities
Securities available for sale	262,765	245,215
Fair Value, Measurements, Recurring | Corporate debt securities
Securities available for sale	96,955	98,034
Fair Value, Measurements, Recurring | Collateralized mortgage obligations
Securities available for sale	821,509	902,313
Fair Value, Measurements, Recurring | Mortgage-backed securities
Securities available for sale	1,158,835	928,831
Fair Value, Measurements, Recurring | Auction rate securities
Securities available for sale	98,059	100,941
Fair Value, Measurements, Recurring | Level 1
Mortgage loans held for sale	0	0
Securities available for sale	21,514	47,623
Other financial assets	16,129	17,682
Total assets	37,643	65,305
Other financial liabilities	15,914	17,737
Fair Value, Measurements, Recurring | Level 1 | Equity securities
Securities available for sale	21,514	47,623
Fair Value, Measurements, Recurring | Level 1 | U.S. Government securities
Securities available for sale		0
Fair Value, Measurements, Recurring | Level 1 | U.S. Government sponsored agency securities
Securities available for sale	0	0
Fair Value, Measurements, Recurring | Level 1 | State and municipal securities
Securities available for sale	0	0
Fair Value, Measurements, Recurring | Level 1 | Corporate debt securities
Securities available for sale	0	0
Fair Value, Measurements, Recurring | Level 1 | Collateralized mortgage obligations
Securities available for sale	0	0
Fair Value, Measurements, Recurring | Level 1 | Mortgage-backed securities
Securities available for sale	0	0
Fair Value, Measurements, Recurring | Level 1 | Auction rate securities
Securities available for sale	0	0
Fair Value, Measurements, Recurring | Level 2
Mortgage loans held for sale	16,886	17,522
Securities available for sale	2,361,864	2,166,899
Other financial assets	34,465	21,305
Total assets	2,413,215	2,205,726
Other financial liabilities	33,010	21,084
Fair Value, Measurements, Recurring | Level 2 | Equity securities
Securities available for sale	0	0
Fair Value, Measurements, Recurring | Level 2 | U.S. Government securities
Securities available for sale		200
Fair Value, Measurements, Recurring | Level 2 | U.S. Government sponsored agency securities
Securities available for sale	25,136	214
Fair Value, Measurements, Recurring | Level 2 | State and municipal securities
Securities available for sale	262,765	245,215
Fair Value, Measurements, Recurring | Level 2 | Corporate debt securities
Securities available for sale	93,619	90,126
Fair Value, Measurements, Recurring | Level 2 | Collateralized mortgage obligations
Securities available for sale	821,509	902,313
Fair Value, Measurements, Recurring | Level 2 | Mortgage-backed securities
Securities available for sale	1,158,835	928,831
Fair Value, Measurements, Recurring | Level 2 | Auction rate securities
Securities available for sale	0	0
Fair Value, Measurements, Recurring | Level 3
Mortgage loans held for sale	0	0
Securities available for sale	101,395	108,849
Other financial assets	0	0
Total assets	101,395	108,849
Other financial liabilities	0	0
Fair Value, Measurements, Recurring | Level 3 | Equity securities
Securities available for sale	0	0
Fair Value, Measurements, Recurring | Level 3 | U.S. Government securities
Securities available for sale		0
Fair Value, Measurements, Recurring | Level 3 | U.S. Government sponsored agency securities
Securities available for sale	0	0
Fair Value, Measurements, Recurring | Level 3 | State and municipal securities
Securities available for sale	0	0
Fair Value, Measurements, Recurring | Level 3 | Corporate debt securities
Securities available for sale	3,336	7,908
Fair Value, Measurements, Recurring | Level 3 | Collateralized mortgage obligations
Securities available for sale	0	0
Fair Value, Measurements, Recurring | Level 3 | Mortgage-backed securities
Securities available for sale	0	0
Fair Value, Measurements, Recurring | Level 3 | Auction rate securities
Securities available for sale	$ 98,059	$ 100,941

Fair Value Measurements Changes

Fair Value Measurements Changes in Assets and Liabilities Measured at Fair Value on a Recurring Basis Using Level 3 Inputs (Details) - Fair Value, Measurements, Recurring - Level 3 - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014
Pooled trust preferred securities
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Balance, beginning of period	$ 4,088	$ 5,306
Realized adjustment to fair value		(18)
Unrealized adjustment to fair value	366	923
Sales	(3,633)	(1,888)
Discount accretion	2	4
Balance, end of period	706	4,088
Pooled trust preferred securities | Call Option [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Settlements - calls	(117)	(239)
Single-issuer trust preferred securities
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Balance, beginning of period	3,820	3,781
Realized adjustment to fair value		0
Unrealized adjustment to fair value	(230)	32
Sales	0	0
Discount accretion	10	7
Balance, end of period	2,630	3,820
Single-issuer trust preferred securities | Call Option [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Settlements - calls	(970)	0
Auction rate securities
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Balance, beginning of period	100,941	159,274
Realized adjustment to fair value		0
Unrealized adjustment to fair value	(903)	3,970
Sales	0	(11,912)
Discount accretion	467	821
Balance, end of period	98,059	100,941
Auction rate securities | Call Option [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Settlements - calls	$ (2,446)	$ (51,212)

Fair Value Measurements Asse112

Fair Value Measurements Assets Measured at Fair Value on a Nonrecurring Basis (Details) - Fair Value, Measurements, Nonrecurring [Member] - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Net loans	$ 138,491	$ 127,834
Total assets	190,534	182,004
Other Assets
Other financial assets	52,043	54,170
Level 1
Net loans	0	0
Total assets	0	0
Level 1 | Other Assets
Other financial assets	0	0
Level 2
Net loans	0	0
Total assets	0	0
Level 2 | Other Assets
Other financial assets	0	0
Level 3
Net loans	138,491	127,834
Total assets	190,534	182,004
Level 3 | Other Assets
Other financial assets	$ 52,043	$ 54,170

Fair Value Measurements Details

Fair Value Measurements Details of Book Value and Fair Value of Financial Instruments (Details) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Fair Value, Balance Sheet Grouping, FinancialStatement Captions[Line Items]
Securities available for sale	$ 2,484,773	$ 2,323,371
FHLB advances and long-term debt	949,542	1,139,413
Book Value
Fair Value, Balance Sheet Grouping, FinancialStatement Captions[Line Items]
Loans held for sale	16,886	17,522
Loans, net of unearned income	13,838,602	13,111,716
Accrued interest receivable	42,767	41,818
Short-term borrowings	497,663	329,719
Accrued interest payable	10,724	18,045
FHLB advances and long-term debt	949,542	1,139,413
Book Value | Cash and due from banks
Fair Value, Balance Sheet Grouping, FinancialStatement Captions[Line Items]
Cash and due from banks	101,120	105,702
Book Value | Interest-bearing Deposits
Fair Value, Balance Sheet Grouping, FinancialStatement Captions[Line Items]
Interest-bearing deposits with other banks	230,300	358,130
Federal Reserve Bank and FHLB stock	62,216	64,953
Book Value | Available-for-sale Securities
Fair Value, Balance Sheet Grouping, FinancialStatement Captions[Line Items]
Securities available for sale	2,484,773	2,323,371
Book Value | Other Assets
Fair Value, Balance Sheet Grouping, FinancialStatement Captions[Line Items]
Other financial assets	166,920	169,764
Book Value | Deposits
Fair Value, Balance Sheet Grouping, FinancialStatement Captions[Line Items]
Demand and savings deposits	11,267,367	10,296,055
Time deposits	2,864,950	3,071,451
Book Value | Other financial liabilities
Fair Value, Balance Sheet Grouping, FinancialStatement Captions[Line Items]
Other financial liabilities	190,927	172,786
Estimated Fair Value
Fair Value, Balance Sheet Grouping, FinancialStatement Captions[Line Items]
Loans held for sale	16,886	17,522
Loans, net of unearned income	13,709,957	13,030,543
Accrued interest receivable	42,767	41,818
Short-term borrowings	497,663	329,719
Accrued interest payable	10,724	18,045
FHLB advances and long-term debt	959,315	1,142,980
Estimated Fair Value | Cash and due from banks
Fair Value, Balance Sheet Grouping, FinancialStatement Captions[Line Items]
Cash and due from banks	101,120	105,702
Estimated Fair Value | Interest-bearing Deposits
Fair Value, Balance Sheet Grouping, FinancialStatement Captions[Line Items]
Interest-bearing deposits with other banks	230,300	358,130
Federal Reserve Bank and FHLB stock	62,216	64,953
Estimated Fair Value | Available-for-sale Securities
Fair Value, Balance Sheet Grouping, FinancialStatement Captions[Line Items]
Securities available for sale	2,484,773	2,323,371
Estimated Fair Value | Other Assets
Fair Value, Balance Sheet Grouping, FinancialStatement Captions[Line Items]
Other financial assets	166,920	169,764
Estimated Fair Value | Deposits
Fair Value, Balance Sheet Grouping, FinancialStatement Captions[Line Items]
Demand and savings deposits	11,267,367	10,296,055
Time deposits	2,862,868	3,069,883
Estimated Fair Value | Other financial liabilities
Fair Value, Balance Sheet Grouping, FinancialStatement Captions[Line Items]
Other financial liabilities	$ 190,927	$ 172,786

Fair Value Measurements Narrati

Fair Value Measurements Narrative (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014
Equity securities, value test coverage	80.00%
Fair value price difference threshold	5.00%
Estimated Fair Value	$ 2,463,259
Other real estate owned (OREO)	$ 11,099	$ 12,022
Assumed market return to liquidity	5 years
Equity Securities Financial Institution
Available-for-sale securities, equity securities	$ 20,600	41,800
Equity Securities, Miscellaneous
Available-for-sale securities, equity securities	914	5,800
Corporate debt securities
Estimated Fair Value	96,955	98,034
Single-issuer trust preferred securities
Estimated Fair Value	39,106	42,016
Pooled trust preferred securities
Estimated Fair Value	706	4,088
Level 3 | Other Assets
Other real estate owned (OREO)	11,100	12,000
Fair value of servicing asset at amortized value	40,900	42,100
Fair Value, Measurements, Recurring
Other financial assets	50,594	38,987
Other financial liabilities	48,924	38,821
Fair Value, Measurements, Recurring | Single-issuer trust preferred securities
Estimated Fair Value	39,100	42,000
Fair Value, Measurements, Recurring | Level 1
Other financial assets	16,129	17,682
Other financial liabilities	15,914	17,737
Fair Value, Measurements, Recurring | Level 1 | Equity Securities Financial Institution
Available-for-sale securities, equity securities	20,600	41,800
Fair Value, Measurements, Recurring | Level 1 | Equity Securities, Miscellaneous
Available-for-sale securities, equity securities	914	5,800
Fair Value, Measurements, Recurring | Level 2
Other financial assets	34,465	21,305
Other financial liabilities	33,010	21,084
Fair Value, Measurements, Recurring | Level 2 | Financial Institutions Subordinated Debt
Estimated Fair Value	53,100	50,000
Fair Value, Measurements, Recurring | Level 2 | Single-issuer trust preferred securities
Estimated Fair Value	36,500	38,200
Fair Value, Measurements, Recurring | Level 2 | Other Corporate Debt
Estimated Fair Value	4,000	1,900
Fair Value, Measurements, Recurring | Level 3
Other financial assets	0	0
Other financial liabilities	0	0
Fair Value, Measurements, Recurring | Level 3 | Single-issuer trust preferred securities
Estimated Fair Value	2,600	3,800
Fair Value, Measurements, Recurring | Level 3 | Pooled trust preferred securities
Estimated Fair Value	$ 706	4,100
Minimum
Assumptions used to estimate fair value, prepayment speed	11.20%
Assumptions used to estimate fair value, discount rate	9.60%
Trust for Benefit of Employees | Fair Value, Measurements, Recurring | Level 1
Other financial assets	$ 15,600	16,400
Foreign Exchange Contract | Fair Value, Measurements, Recurring | Level 1
Other financial assets	547	1,300
Forward Commitments | Fair Value, Measurements, Recurring | Level 2
Other financial assets	1,500	1,400
Other financial liabilities	40	1,200
Interest Rate Swap | Fair Value, Measurements, Recurring | Level 2
Other financial assets	33,000	19,900
Other financial liabilities	33,000	19,900
Foreign Exchange Contract | Fair Value, Measurements, Recurring | Level 1
Other financial liabilities	331	1,300
Trust for Benefit of Employees | Fair Value, Measurements, Recurring | Level 1
Other financial liabilities	$ 15,600	$ 16,400
Short Term Financial Instruments
Short term borrowings, reprice period	90

Condensed Financial Informat115

Condensed Financial Information - Parent Company Only Balance Sheet (Details) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Assets [Abstract]
Other assets	$ 550,017	$ 527,869
Investments in:
Total Assets	17,914,718	17,124,767
Other liabilities	282,578	273,419
Total Liabilities	15,872,824	15,128,102
Shareholders' Equity [Abstract]
Shareholders’ equity	2,041,894	1,996,665	$ 2,063,187	$ 2,081,656
Total Liabilities and Shareholders’ Equity	17,914,718	17,124,767
Parent
Assets [Abstract]
Cash	0	137	$ 8	$ 40
Other assets	4,337	10,053
Receivable from subsidiaries	29,249	29,120
Investments in:
Bank subsidiaries	2,226,975	2,174,786
Non-bank subsidiaries	408,187	414,863
Total Assets	2,668,748	2,628,959
Long-term debt	361,504	465,936
Payable to non-bank subsidiaries	188,087	84,676
Other liabilities	77,263	81,682
Total Liabilities	626,854	632,294
Shareholders' Equity [Abstract]
Shareholders’ equity	2,041,894	1,996,665
Total Liabilities and Shareholders’ Equity	$ 2,668,748	$ 2,628,959

Condensed Financial Informat116

Condensed Financial Information - Parent Company Only Income statement (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Condensed Financial Statements, Captions [Line Items]
Total Non-Interest Income	$ 181,839	$ 167,379	$ 187,664
Income Before Income Taxes	199,423	210,500	212,925
Income tax benefit	49,921	52,606	51,085
Net Income	149,502	157,894	161,840
Parent
Condensed Financial Statements, Captions [Line Items]
Dividends from subsidiaries	114,000	139,150	114,438
Other (1)	141,241	120,543	106,297
Total Non-Interest Income	255,241	259,693	220,735
Expenses	176,457	152,243	138,164
Income Before Income Taxes	78,784	107,450	82,571
Income tax benefit	(11,834)	(10,549)	(10,744)
Income before equity in undistributed income of subsidiaries	90,618	117,999	93,315
Net Income	149,502	157,894	161,840
Parent | Bank subsidiaries
Condensed Financial Statements, Captions [Line Items]
Non-bank subsidiaries	60,806	33,134	56,552
Parent | Non-bank subsidiaries
Condensed Financial Statements, Captions [Line Items]
Non-bank subsidiaries	$ (1,922)	$ 6,761	$ 11,973

Condensed Financial Informat117

Condensed Financial Information - Parent Company Only Cash Flows (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Cash Flows From Operating Activities:
Net Income	$ 149,502	$ 157,894	$ 161,840
Adjustments to Reconcile Net Income to Net Cash Provided by Operating Activities [Abstract]
Stock-based compensation	5,938	5,865	5,330
Excess tax benefits from stock-based compensation	(201)	(81)	(302)
Decrease (increase) in other assets	(9,931)	(8,803)	37,236
Loss on redemption of trust preferred securities	5,626	0	0
Increase in other liabilities and payable to non-bank subsidiaries	(8,128)	(13,294)	(29,344)
Total adjustments	27,460	52,478	139,777
Net cash provided by operating activities	176,962	210,372	301,617
Cash Flows From Investing Activities
Net cash used in investing activities	(818,027)	(275,448)	(598,747)
Cash Flows From Financing Activities:
Repayments of long-term debt	(539,497)	(6,284)	(10,669)
Additions to long-term debt	347,778	262,113	0
Net proceeds from issuance of common stock	10,607	8,201	9,936
Excess tax benefits from stock-based compensation	201	81	302
Dividends paid	(65,361)	(64,028)	(46,525)
Acquisition of treasury stock	(50,000)	(175,255)	(90,927)
Deferred accelerated stock repurchase payment	0	(20,000)	0
Deferred accelerated stock repurchase payment	50,000	175,255	90,927
Net cash provided by (used in) financing activities	636,483	(47,762)	259,370
Net (Decrease) Increase in Cash and Cash Equivalents	(4,582)	(112,838)	(37,760)
Parent
Cash Flows From Operating Activities:
Net Income	149,502	157,894	161,840
Adjustments to Reconcile Net Income to Net Cash Provided by Operating Activities [Abstract]
Stock-based compensation	5,938	5,865	5,330
Excess tax benefits from stock-based compensation	(201)	(81)	(302)
Decrease (increase) in other assets	2,806	(7,120)	1,893
Equity in undistributed net income of subsidiaries	(58,884)	(39,895)	(68,525)
Loss on redemption of trust preferred securities	5,626	0	0
Increase in other liabilities and payable to non-bank subsidiaries	106,490	37,354	26,946
Total adjustments	61,775	(3,877)	(34,658)
Net cash provided by operating activities	211,277	154,017	127,182
Cash Flows From Financing Activities:
Repayments of long-term debt	(254,640)	0	0
Additions to long-term debt	147,779	97,113	0
Net proceeds from issuance of common stock	10,607	8,201	9,936
Excess tax benefits from stock-based compensation	201	81	302
Dividends paid	(65,361)	(64,028)	(46,525)
Acquisition of treasury stock	(50,000)	(175,255)	(90,927)
Deferred accelerated stock repurchase payment	0	(20,000)	0
Net cash provided by (used in) financing activities	(211,414)	(153,888)	(127,214)
Net (Decrease) Increase in Cash and Cash Equivalents	(137)	129	(32)
Cash and Cash Equivalents at Beginning of Year	137	8	40
Cash and Cash Equivalents at End of Year	$ 0	$ 137	$ 8