Fulton Financial (FULT) 10-Q3 Nov 172017 Q3 Quarterly reportFinancial data

Company Profile

Document and Entity Information

Document and Entity Information - shares	9 Months Ended
Document and Entity Information - shares	Sep. 30, 2017	Oct. 27, 2017
Document and Entity Information
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-Q
Document Period End Date	Sep. 30, 2017
Document Fiscal Year Focus	2,017
Document Fiscal Period Focus	Q3
Amendment Flag	false
Entity Common Stock, Shares Outstanding		175,122,000

Consolidated Balance Sheets

Consolidated Balance Sheets - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
ASSETS
Cash and due from banks	$ 99,803	$ 118,763
Interest-bearing deposits with other banks	582,845	233,763
Federal Reserve Bank and Federal Home Loan Bank stock	62,951	57,489
Loans held for sale	23,049	28,697
Available for sale investment securities	2,561,516	2,559,227
Loans, net of unearned income	15,486,899	14,699,272
Less: Allowance for loan losses	(172,245)	(168,679)
Net Loans	15,314,654	14,530,593
Premises and equipment	221,551	217,806
Accrued interest receivable	50,082	46,294
Goodwill and intangible assets	531,556	531,556
Other assets	614,853	620,059
Total Assets	20,062,860	18,944,247
LIABILITIES
Noninterest-bearing	4,363,915	4,376,137
Interest-bearing	11,777,865	10,636,727
Total Deposits	16,141,780	15,012,864
Short-term borrowings:
Federal funds purchased	5,812	278,570
Other short-term borrowings	292,939	262,747
Total Short-Term Borrowings	298,751	541,317
Accrued interest payable	10,568	9,632
Other liabilities	347,816	329,916
Federal Home Loan Bank advances and other long-term debt	1,038,159	929,403
Total Liabilities	17,837,074	16,823,132
SHAREHOLDERS’ EQUITY
Common stock, $2.50 par value, 600 million shares authorized, 220.9 million shares issued in 2017 and 219.9 million shares issued in 2016	552,153	549,707
Additional paid-in capital	1,476,150	1,467,602
Retained earnings	812,148	732,099
Accumulated other comprehensive loss	(24,203)	(38,449)
Treasury stock, at cost, 45.8 million shares in 2017 and 2016	(590,462)	(589,844)
Total Shareholders’ Equity	2,225,786	2,121,115
Total Liabilities and Shareholders’ Equity	$ 20,062,860	$ 18,944,247

Consolidated Balance Sheets (Pa

Consolidated Balance Sheets (Parenthetical) - $ / shares	Sep. 30, 2017	Dec. 31, 2016
Statement of Financial Position [Abstract]
Common stock, par value (in dollars per share)	$ 2.5	$ 2.5
Common stock, shares authorized (in shares)	600,000,000	600,000,000
Common stock, shares issued (in shares)	220,900,000	219,900,000
Treasury stock, shares (in shares)	45,800,000	45,800,000

Consolidated Statements of Inco

Consolidated Statements of Income - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
Consolidated Statements of Income - USD ($) $ in Thousands	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
INTEREST INCOME
Loans, including fees	$ 155,152	$ 136,639	$ 446,158	$ 405,361
Investment securities:
Taxable	11,423	10,874	34,811	34,036
Tax-exempt	2,920	2,550	8,625	6,910
Dividends	105	143	343	438
Loans held for sale	243	210	631	529
Other interest income	1,667	1,052	3,311	2,814
Total Interest Income	171,510	151,468	493,879	450,088
INTEREST EXPENSE
Deposits	16,023	11,311	40,709	32,925
Short-term borrowings	578	254	2,407	739
Federal Home Loan Bank advances and other long-term debt	8,100	9,338	24,812	27,889
Total Interest Expense	24,701	20,903	67,928	61,553
Net Interest Income	146,809	130,565	425,951	388,535
Provision for credit losses	5,075	4,141	16,575	8,182
Net Interest Income After Provision for Credit Losses	141,734	126,424	409,376	380,353
NON-INTEREST INCOME
Other service charges and fees	12,251	14,407	39,030	38,140
Service charges on deposit accounts	13,022	13,078	38,336	38,532
Investment management and trust services	12,157	11,425	36,097	33,660
Mortgage banking income	4,805	4,529	15,542	12,456
Investment securities gains, net	4,597	2	7,139	1,025
Other	5,142	4,708	14,874	13,610
Total Non-Interest Income	51,974	48,149	151,018	137,423
NON-INTEREST EXPENSE
Salaries and employee benefits	72,894	70,696	216,626	210,097
Net occupancy expense	12,180	11,782	37,159	35,813
Data processing and software	10,301	8,727	28,334	27,477
Other outside services	6,582	5,783	19,836	17,347
Amortization of tax credit investments	3,503	0	7,652	0
Professional fees	3,388	2,535	9,056	8,221
Equipment expense	3,298	3,137	9,691	9,380
FDIC insurance expense	3,007	1,791	7,431	7,700
Marketing	2,089	1,774	6,309	5,314
Other	14,915	13,623	45,033	40,549
Total Non-Interest Expense	132,157	119,848	387,127	361,898
Income Before Income Taxes	61,551	54,725	173,267	155,878
Income taxes	12,646	13,257	35,515	36,403
Net Income	$ 48,905	$ 41,468	$ 137,752	$ 119,475
PER SHARE:
Net Income (Basic) (in dollars per share)	$ 0.28	$ 0.24	$ 0.79	$ 0.69
Net Income (Diluted) (in dollars per share)	0.28	0.24	0.78	0.69
Cash Dividends (in dollars per share)	$ 0.11	$ 0.10	$ 0.33	$ 0.29

Consolidated Statements of Comp

Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Statement of Comprehensive Income [Abstract]
Net Income	$ 48,905	$ 41,468	$ 137,752	$ 119,475
Other Comprehensive Income (Loss), net of tax:
Unrealized gain (loss) on securities	3,320	(3,580)	17,861	26,285
Reclassification adjustment for securities gains included in net income	(2,988)	(1)	(4,639)	(666)
Amortization of unrealized loss on derivative financial instruments	0	4	0	12
Amortization of net unrecognized pension and postretirement items	340	379	1,024	877
Other Comprehensive Income (Loss)	672	(3,198)	14,246	26,508
Total Comprehensive Income	$ 49,577	$ 38,270	$ 151,998	$ 145,983

Consolidated Statements of Shar

Consolidated Statements of Shareholders' Equity - USD ($) shares in Thousands, $ in Thousands	Total	Common Stock [Member]	Additional Paid-In Capital [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive Income [Member]	Treasury Stock [Member]
Beginning Balance at Dec. 31, 2015	$ 2,041,894	$ 547,141	$ 1,450,690	$ 641,588	$ (22,017)	$ (575,508)
Beginning Balance (in shares) at Dec. 31, 2015		174,176
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net Income	119,475			119,475
Other comprehensive income	26,508				26,508
Stock issued	5,526	$ 594	2,099			2,833
Stock issued, including related tax benefits (in shares)		454
Stock-based compensation awards	4,808		4,808
Acquisition of treasury stock (in shares)		(1,486)
Acquisition of treasury stock	(18,545)					(18,545)
Common stock cash dividends	(50,230)			(50,230)
Ending Balance at Sep. 30, 2016	2,129,436	$ 547,735	1,457,597	710,833	4,491	(591,220)
Ending Balance (in shares) at Sep. 30, 2016		173,144
Beginning Balance at Dec. 31, 2016	2,121,115	$ 549,707	1,467,602	732,099	(38,449)	(589,844)
Beginning Balance (in shares) at Dec. 31, 2016		174,040
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net Income	137,752
Other comprehensive income	14,246				14,246
Stock issued	7,037	$ 2,446	5,209			(618)
Stock issued, including related tax benefits (in shares)		1,017
Stock-based compensation awards	3,339		3,339
Common stock cash dividends	(57,703)			(57,703)
Ending Balance at Sep. 30, 2017	$ 2,225,786	$ 552,153	$ 1,476,150	$ 812,148	$ (24,203)	$ (590,462)
Ending Balance (in shares) at Sep. 30, 2017		175,057

Consolidated Statements of Sha7

Consolidated Statements of Shareholders' Equity (Parenthetical) - $ / shares	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Statement of Stockholders' Equity [Abstract]
Cash dividends per share	$ 0.11	$ 0.10	$ 0.33	$ 0.29

Consolidated Statements of Cash

Consolidated Statements of Cash Flows - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016
CASH FLOWS FROM OPERATING ACTIVITIES:
Net Income	$ 137,752	$ 119,475
Adjustments to reconcile net income to net cash provided by operating activities:
Provision for credit losses	16,575	8,182
Depreciation and amortization of premises and equipment	21,013	20,547
Net amortization of investment securities premiums	7,412	7,434
Investment securities gains, net	(7,139)	(1,025)
Gain on sales of mortgage loans held for sale	(10,122)	(11,967)
Proceeds from sales of mortgage loans held for sale	470,927	493,457
Originations of mortgage loans held for sale	(455,157)	(492,440)
Amortization of issuance costs on long-term debt	618	347
Stock-based compensation	3,339	4,808
Excess tax benefits from stock-based compensation	0	(58)
Increase in accrued interest receivable	(3,788)	(833)
Decrease (increase) in other assets	38,108	(9,075)
Increase in accrued interest payable	936	2,921
(Decrease) increase in other liabilities	(26,027)	2,061
Total adjustments	56,695	24,359
Net cash provided by operating activities	194,447	143,834
CASH FLOWS FROM INVESTING ACTIVITIES:
Proceeds from sales of securities available for sale	44,485	84,978
Proceeds from principal repayments and maturities of securities available for sale	321,088	426,932
Purchase of securities available for sale	(344,569)	(484,164)
Increase in short-term investments	(354,544)	(136,450)
Net increase in loans	(800,778)	(567,061)
Net purchases of premises and equipment	(24,758)	(23,021)
Net cash used in investing activities	(1,159,076)	(698,786)
CASH FLOWS FROM FINANCING ACTIVITIES:
Net increase in demand and savings deposits	1,014,697	880,795
Net increase (decrease) in time deposits	114,219	(60,633)
Decrease in short-term borrowings	(242,566)	(233,621)
Additions to long-term debt	223,251	16,000
Repayments of long-term debt	(115,114)	(603)
Net proceeds from issuance of common stock	7,037	5,468
Excess tax benefits from stock-based compensation	0	58
Dividends paid	(55,855)	(48,590)
Acquisition of treasury stock	0	(18,545)
Net cash provided by financing activities	945,669	540,329
Net Decrease in Cash and Due From Banks	(18,960)	(14,623)
Cash and Due From Banks at Beginning of Period	118,763	101,120
Cash and Due From Banks at End of Period	99,803	86,497
Cash paid during the period for:
Interest	66,992	58,632
Income taxes	$ 7,881	$ 9,404

Basis of Presentation

Basis of Presentation	9 Months Ended
Basis of Presentation	Sep. 30, 2017
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Basis of Presentation	Basis of Presentation The accompanying unaudited consolidated financial statements of Fulton Financial Corporation (the "Corporation") have been prepared in conformity with U.S. generally accepted accounting principles ("U.S. GAAP") for interim financial information and with the instructions to Form 10-Q and Rule 10-01 of Regulation S-X. Accordingly, they do not include all of the information and notes required by U.S. GAAP for complete financial statements. The preparation of financial statements in accordance with U.S. GAAP requires management to make estimates and assumptions that affect the amounts of assets and liabilities as of the date of the financial statements as well as revenues and expenses during the period. Actual results could differ from those estimates. In the opinion of management, all adjustments (consisting of normal recurring accruals) considered necessary for a fair presentation have been included. These consolidated financial statements should be read in conjunction with the audited consolidated financial statements and the notes thereto included in the Corporation's Annual Report on Form 10-K for the year ended December 31, 2016 . Operating results for the nine months ended September 30, 2017 are not necessarily indicative of the results that may be expected for the year ending December 31, 2017 . The Corporation evaluates subsequent events through the date of filing of this Form 10-Q with the Securities and Exchange Commission ("SEC"). 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. The FASB has issued amendments to this standard (ASC Updates 2016-08, 2016-10, 2016-11, 2016-12 and 2017-13). These amendments provide further clarification to the standard. For public business entities, ASC Update 2014-09 is effective for interim and annual reporting periods beginning after December 15, 2017. For the Corporation, this standards update is effective with its March 31, 2018 quarterly report on Form 10-Q. The Corporation has evaluated the impact of the adoption of ASC Update 2014-09 on its consolidated financial statements and has not identified any significant changes in the timing of revenue recognition as a result of this amended guidance at this time. In addition, the Corporation is evaluating the expanded disclosure requirements included in the update. The Corporation plans to adopt this update on January 1, 2018 under the modified retrospective approach and does not expect the adoption of ASC Update 2014-09 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 option is elected. This standard will require equity investments to be measured at fair value, with changes recorded in net income. 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. The standards update also requires expanded qualitative and quantitative disclosures. In September of 2017, the FASB issued clarifying guidance to this standard (ASC Update 2017-13). 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, which requires restatement of all comparative periods in the year of adoption. Early adoption 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. The Corporation currently operates a number of branches that are leased, with the leases accounted for as operating leases that are not recognized on the consolidated balance sheet. Under ASC Update 2016-02, right-of-use assets and lease liabilities will need to be recognized on the consolidated balance sheet for these branches, which will also have an impact on regulatory capital ratios. The recognition of operating leases on the consolidated balance sheet is expected to be the most significant impact of the adoption of this standards update. In June 2016, the FASB issued ASC Update 2016-13, "Financial Instruments - Credit Losses." The new impairment model prescribed by this standards update is a single impairment model for all financial assets (i.e., loans and investments). The recognition of credit losses would be based on an entity’s current estimate of expected losses (referred to as the Current Expected Credit Loss model, or "CECL"), as opposed to recognition of losses only when they are probable under current U.S. GAAP. ASC Update 2016-13 is effective for interim and annual reporting periods beginning after December 15, 2019. Early adoption is permitted. The Corporation intends to adopt this standards update effective with its March 31, 2020 quarterly report on Form 10-Q. The Corporation is currently evaluating the impact of the adoption of ASC Update 2016-13 on its consolidated financial statements. In August 2016, the FASB issued ASC Update 2016-15, "Statement of Cash Flows - Classification of Certain Cash Receipts and Cash Payments." This standards update provides guidance regarding the presentation of certain cash receipts and cash payments in the statement of cash flows, addressing eight specific cash flow classification issues, in order to reduce existing diversity in practice. ASC Update 2016-15 is effective for interim and annual reporting periods beginning after December 15, 2017. Early adoption is 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 2016-15 to have a material impact on its consolidated financial statements. In November 2016, the FASB issued ASC Update 2016-18, "Statement of Cash Flows - Restricted Cash." This standards update provides guidance regarding the presentation of restricted cash in the statement of cash flows. The update requires companies to include amounts generally described as restricted cash and restricted cash equivalents, along with cash and cash equivalents, when reconciling the beginning-of-period and end-of-period total amounts shown on the statement of cash flows. It also requires an entity to disclose the nature of the restrictions on cash and cash equivalents. ASC Update 2016-18 is effective for interim and annual reporting periods beginning after December 15, 2017. Early adoption is 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 2016-18 to have a material impact on its consolidated financial statements. In January 2017, the FASB issued ASC Update 2017-04, "Intangibles - Goodwill and Other." This standards update eliminates Step 2 of the goodwill impairment test which measures the impairment amount. Identifying and measuring impairment will take place in a single quantitative step. In addition, no separate qualitative assessment for reporting units with zero or negative carrying amount is required. Entities must disclose the existence of these reporting units and the amount of goodwill allocated to them. This update should be applied on a prospective basis, and an entity is required to disclose the nature of and reason for the change in accounting principle upon transition. ASC Update 2017-04 is effective for annual or interim goodwill impairment tests in reporting periods beginning after December 15, 2019. Early adoption is permitted. The Corporation intends to adopt this standards update effective with its 2020 goodwill impairment test and does not expect the adoption of ASC Update 2017-04 to have a material impact on its consolidated financial statements. In March 2017, the FASB issued ASC Update 2017-07, "Improving the Presentation of Net Periodic Pension Costs and Net Periodic Benefit Cost." This standards update requires a company to present service cost separately from the other components of net benefit cost. In addition, the update provides explicit guidance on how to present the service cost component and the other components of net benefit cost in the income statement and allow only the service cost component of net benefit cost to be eligible for capitalization. ASC Update 2017-07 is effective for annual or interim reporting periods beginning after December 15, 2017. Early adoption is 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 2017-07 to have a material impact on its consolidated financial statements. In March 2017, the FASB issued ASC Update 2017-08, "Premium Amortization on Purchased Callable Debt Securities." This standards update requires that a company amortize the premium on callable debt securities to the earliest call date versus current U.S. GAAP which requires amortization over the contractual life of the securities. The amortization period for callable debt securities purchased at a discount would not be impacted by the new accounting standards update. This amendment is to be adopted on a modified retrospective basis with a cumulative effect adjustment to retained earnings as of the beginning of the period of adoption. ASC Update 2017-08 is effective for annual or interim reporting periods beginning after December 15, 2018. Early adoption is permitted. The Corporation intends to adopt this standards update effective with its March 31, 2019 quarterly report on Form 10-Q and does not expect the adoption of ASC Update 2017-08 to have a material impact on its consolidated financial statements. In May 2017, the FASB issued ASC Update 2017-09, "Scope of Modification Accounting." This standards update provides clarity and reduces both (1) diversity in practice and (2) cost and complexity, when applying the guidance in the stock compensation standard, to a change to the terms or conditions of a share-based payment award. ASC Update 2017-09 is effective for annual or interim reporting periods beginning after December 15, 2017. Early adoption is 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 2017-09 to have a material impact on its consolidated financial statements. Reclassifications Certain amounts in the 2016 consolidated financial statements and notes have been reclassified to conform to the 2017 presentation.

Net Income Per Share

Net Income Per Share	9 Months Ended
Net Income Per Share	Sep. 30, 2017
Earnings Per Share [Abstract]
Net Income Per Share	Net Income Per Share Basic net income per 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 units ("RSUs") and performance-based restricted stock units ("PSUs"). PSUs are required to be included in weighted average shares outstanding if performance measures, as defined in each PSU award agreement, are met as of the end of the period. A reconciliation of weighted average shares outstanding used to calculate basic net income per share and diluted net income per share follows: Three months ended September 30 Nine months ended September 30 2017 2016 2017 2016 (in thousands) Weighted average shares outstanding (basic) 174,991 173,020 174,582 173,248 Impact of common stock equivalents 1,225 1,044 1,194 1,017 Weighted average shares outstanding (diluted) 176,216 174,064 175,776 174,265 For the three and nine months ended September 30, 2016, 447,000 and 712,000 stock options, respectively, were excluded from the diluted net income per share computation as their effect would have been anti-dilutive. There were no stock options excluded for the three and nine months ended September 30, 2017 .

Accumulated Other Comprehensive

Accumulated Other Comprehensive Income	9 Months Ended
Accumulated Other Comprehensive Income	Sep. 30, 2017
Equity [Abstract]
Accumulated Other Comprehensive Income	Accumulated Other Comprehensive Income The following table presents changes in other comprehensive income: Before-Tax Amount Tax Effect Net of Tax Amount (in thousands) Three months ended September 30, 2017 Unrealized gain on securities $ 5,109 $ (1,789 ) $ 3,320 Reclassification adjustment for securities gains included in net income (1) (4,597 ) 1,609 (2,988 ) Amortization of net unrecognized pension and postretirement items (3) 523 (183 ) 340 Total Other Comprehensive Income $ 1,035 $ (363 ) $ 672 Three months ended September 30, 2016 Unrealized loss on securities $ (5,505 ) $ 1,925 $ (3,580 ) Reclassification adjustment for securities gains included in net income (1) (2 ) 1 (1 ) Amortization of unrealized loss on derivative financial instruments (2) 6 (2 ) 4 Amortization of net unrecognized pension and postretirement items (3) 583 (204 ) 379 Total Other Comprehensive Loss $ (4,918 ) $ 1,720 $ (3,198 ) Nine months ended September 30, 2017 Unrealized gain on securities $ 27,482 $ (9,621 ) $ 17,861 Reclassification adjustment for securities gains included in net income (1) (7,139 ) 2,500 (4,639 ) Amortization of net unrecognized pension and postretirement items (3) 1,575 (551 ) 1,024 Total Other Comprehensive Income $ 21,918 $ (7,672 ) $ 14,246 Nine months ended September 30, 2016 Unrealized gain on securities $ 40,441 $ (14,156 ) $ 26,285 Reclassification adjustment for securities gains included in net income (1) (1,025 ) 359 (666 ) Amortization of unrealized loss on derivative financial instruments (2) 18 (6 ) 12 Amortization of net unrecognized pension and postretirement items (3) 1,349 (472 ) 877 Total Other Comprehensive Income $ 40,783 $ (14,275 ) $ 26,508 (1) Amounts reclassified out of accumulated other comprehensive income. Before-tax amounts included in "Investment securities gains, net" on the consolidated statements of income. See Note 4, "Investment Securities," for additional details. (2) Amounts reclassified out of accumulated other comprehensive income. Before-tax amounts included in "Interest expense" on the consolidated statements of income. (3) Amounts reclassified out of accumulated other comprehensive income. Before-tax amounts included in "Salaries and employee benefits" on the consolidated statements of income. See Note 8, "Employee Benefit Plans," for additional details. The following table presents changes in each component of accumulated other comprehensive income (loss), net of tax: Unrealized Gains (Losses) on Investment Securities Not Other-Than-Temporarily Impaired Unrealized Non-Credit Gains (Losses) on Other-Than-Temporarily Impaired Debt Securities Unrealized Effective Portions of Losses on Forward-Starting Interest Rate Swaps Unrecognized Pension and Postretirement Plan Income (Costs) Total (in thousands) Three months ended September 30, 2017 Balance at June 30, 2017 $ (10,157 ) $ 273 $ — $ (14,991 ) $ (24,875 ) Other comprehensive income before reclassifications 3,320 — — — 3,320 Amounts reclassified from accumulated other comprehensive income (loss) (2,988 ) — — 340 (2,648 ) Balance at September 30, 2017 $ (9,825 ) $ 273 $ — $ (14,651 ) $ (24,203 ) Three months ended September 30, 2016 Balance at June 30, 2016 $ 22,701 $ 458 $ (7 ) $ (15,463 ) $ 7,689 Other comprehensive loss before reclassifications (3,580 ) — — — (3,580 ) Amounts reclassified from accumulated other comprehensive income (loss) (1 ) — 4 379 382 Balance at September 30, 2016 $ 19,120 $ 458 $ (3 ) $ (15,084 ) $ 4,491 Nine months ended September 30, 2017 Balance at December 31, 2016 $ (23,047 ) $ 273 $ — $ (15,675 ) $ (38,449 ) Other comprehensive income before reclassifications 17,861 — — — 17,861 Amounts reclassified from accumulated other comprehensive income (loss) (4,639 ) — — 1,024 (3,615 ) Balance at September 30, 2017 $ (9,825 ) $ 273 $ — $ (14,651 ) $ (24,203 ) Nine months ended September 30, 2016 Balance at December 31, 2015 $ (6,499 ) $ 458 $ (15 ) $ (15,961 ) $ (22,017 ) Other comprehensive income before reclassifications 26,285 — — — 26,285 Amounts reclassified from accumulated other comprehensive income (loss) (666 ) — 12 877 223 Balance at September 30, 2016 $ 19,120 $ 458 $ (3 ) $ (15,084 ) $ 4,491

Investment Securities

Investment Securities	9 Months Ended
Investment Securities	Sep. 30, 2017
Investments, Debt and Equity Securities [Abstract]
Investment Securities	Investment Securities The following table presents the amortized cost and estimated fair values of investment securities, which were all classified as available for sale: Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Estimated Fair Value (in thousands) September 30, 2017 U.S. Government sponsored agency securities $ 5,961 $ 54 $ — $ 6,015 State and municipal securities 415,313 4,005 (5,405 ) 413,913 Corporate debt securities 92,355 2,578 (1,956 ) 92,977 Collateralized mortgage obligations 601,845 1,380 (9,547 ) 593,678 Residential mortgage-backed securities 1,184,797 5,850 (8,561 ) 1,182,086 Commercial mortgage-backed securities 161,960 299 (627 ) 161,632 Auction rate securities 107,410 — (9,254 ) 98,156 Total debt securities 2,569,641 14,166 (35,350 ) 2,548,457 Equity securities 6,560 6,499 — 13,059 Total $ 2,576,201 $ 20,665 $ (35,350 ) $ 2,561,516 Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Estimated Fair Value (in thousands) December 31, 2016 U.S. Government sponsored agency securities $ 132 $ 2 $ — $ 134 State and municipal securities 405,274 2,043 (15,676 ) 391,641 Corporate debt securities 112,016 1,978 (4,585 ) 109,409 Collateralized mortgage obligations 604,095 1,943 (12,178 ) 593,860 Residential mortgage-backed securities 1,328,192 6,546 (16,900 ) 1,317,838 Commercial mortgage-backed securities 25,100 — (537 ) 24,563 Auction rate securities 107,215 — (9,959 ) 97,256 Total debt securities 2,582,024 12,512 (59,835 ) 2,534,701 Equity securities 12,231 12,295 — 24,526 Total $ 2,594,255 $ 24,807 $ (59,835 ) $ 2,559,227 Securities carried at $1.9 billion and $1.8 billion as of September 30, 2017 and December 31, 2016 , respectively, were pledged as collateral to secure public and trust deposits and customer repurchase agreements. Equity securities include common stocks of publicly traded financial institutions (estimated fair value of $12.1 million at September 30, 2017 and $23.5 million at December 31, 2016 ) and other equity investments (estimated fair value of $1.0 million at both September 30, 2017 and December 31, 2016 ). As of September 30, 2017 , the financial institutions stock portfolio had a cost basis of $5.8 million and an estimated fair value of $12.1 million , including an investment in a single financial institution with a cost basis of $4.2 million and an estimated fair value of $8.8 million . The estimated fair value of this investment accounted for 73.4% of the estimated fair value of the Corporation's investments in the common stocks of publicly traded financial institutions. No other investment in a single financial institution 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 September 30, 2017 , by contractual maturity, are shown in the following table. Actual maturities may differ from contractual maturities as certain investment securities are subject to call or prepayment with or without call or prepayment penalties. Amortized Estimated (in thousands) Due in one year or less $ 23,940 $ 24,118 Due from one year to five years 30,708 31,196 Due from five years to ten years 114,114 115,336 Due after ten years 452,277 440,411 621,039 611,061 Residential mortgage-backed securities 1,184,797 1,182,086 Commercial mortgage-backed securities 161,960 161,632 Collateralized mortgage obligations 601,845 593,678 Total debt securities $ 2,569,641 $ 2,548,457 The following table presents information related to the gross realized gains and losses on the sales of equity and debt securities: Gross Gross Net Gains (Losses) Three months ended September 30, 2017 (in thousands) Equity securities $ 4,817 $ — $ 4,817 Debt securities 12 (232 ) (220 ) Total $ 4,829 $ (232 ) $ 4,597 Three months ended September 30, 2016 Equity securities $ 2 $ — $ 2 Debt securities — — — Total $ 2 $ — $ 2 Nine months ended September 30, 2017 Equity securities $ 7,167 $ — $ 7,167 Debt securities 218 (246 ) (28 ) Total $ 7,385 $ (246 ) $ 7,139 Nine months ended September 30, 2016 Equity securities $ 739 $ (10 ) $ 729 Debt securities 322 (26 ) 296 Total $ 1,061 $ (36 ) $ 1,025 The cumulative balance of credit related other-than-temporary impairment charges, previously recognized as components of earnings, for debt securities held by the Corporation at September 30, 2017 and September 30, 2016 was $ 10.0 million . There were no other-than-temporary impairment charges recognized for the three and nine months ended September 30, 2017 and September 30, 2016. 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, at September 30, 2017 and December 31, 2016: Less than 12 months 12 months or longer Total Estimated Fair Value Unrealized Losses Estimated Fair Value Unrealized Losses Estimated Fair Value Unrealized Losses September 30, 2017 (in thousands) State and municipal securities $ 121,527 $ (1,930 ) $ 87,466 $ (3,475 ) $ 208,993 $ (5,405 ) Corporate debt securities 3,570 (16 ) 31,533 (1,940 ) 35,103 (1,956 ) Collateralized mortgage obligations 85,335 (837 ) 301,009 (8,710 ) 386,344 (9,547 ) Residential mortgage-backed securities 796,019 (8,359 ) 5,513 (202 ) 801,532 (8,561 ) Commercial mortgage-backed securities 87,260 (627 ) — — 87,260 (627 ) Auction rate securities — — 98,156 (9,254 ) 98,156 (9,254 ) Total debt securities $ 1,093,711 $ (11,769 ) $ 523,677 $ (23,581 ) $ 1,617,388 $ (35,350 ) Less than 12 months 12 months or longer Total Estimated Unrealized Estimated Unrealized Estimated Unrealized December 31, 2016 (in thousands) State and municipal securities $ 247,509 $ (15,676 ) $ — $ — $ 247,509 $ (15,676 ) Corporate debt securities 11,922 (110 ) 34,629 (4,475 ) 46,551 (4,585 ) Collateralized mortgage obligations 166,905 (3,899 ) 258,237 (8,279 ) 425,142 (12,178 ) Residential mortgage-backed securities 1,112,947 (16,900 ) — — 1,112,947 (16,900 ) Commercial mortgage-backed securities 24,563 (537 ) — — 24,563 (537 ) Auction rate securities — — 97,256 (9,959 ) 97,256 (9,959 ) Total debt securities $ 1,563,846 $ (37,122 ) $ 390,122 $ (22,713 ) $ 1,953,968 $ (59,835 ) The change in fair value of these securities is attributable to changes in interest rates and not credit quality, and 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. Therefore, the Corporation does not consider these investments to be other-than-temporarily impaired as of September 30, 2017 . As of September 30, 2017 , all of the auction rate securities (auction rate certificates, or "ARCs"), were rated above investment grade. All of the loans underlying the ARCs have principal payments which are guaranteed by the federal government. As of September 30, 2017 , all ARCs were current and making scheduled interest payments, and based on management’s evaluations, were not subject to any other-than-temporary impairment charges for the three and nine months ended September 30, 2017 . 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. 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 value of corporate debt securities: September 30, 2017 December 31, 2016 Amortized cost Estimated fair value Amortized cost Estimated fair value (in thousands) Single-issuer trust preferred securities $ 39,186 $ 38,251 $ 43,746 $ 39,829 Subordinated debt 37,147 37,859 46,231 46,723 Senior debt 12,033 12,456 18,037 18,433 Pooled trust preferred securities — 422 — 422 Corporate debt securities issued by financial institutions 88,366 88,988 108,014 105,407 Other corporate debt securities 3,989 3,989 4,002 4,002 Available for sale corporate debt securities $ 92,355 $ 92,977 $ 112,016 $ 109,409 Single-issuer trust preferred securities had an unrealized loss of $935,000 at September 30, 2017 . Five of the 18 single-issuer trust preferred securities, with an amortized cost of $6.9 million and an estimated fair value of $6.6 million at September 30, 2017 , were rated below investment grade by at least one ratings agency. All of the single-issuer trust preferred securities rated below investment grade were rated "BB" and "Ba". Two single-issuer trust preferred securities with an amortized cost of $3.8 million and an estimated fair value of $2.8 million at September 30, 2017 were not rated by any ratings agency. Based on management’s evaluations, no corporate debt securities were subject to any other-than-temporary impairment charges for the three and nine months ended September 30, 2017 . 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	9 Months Ended
Loans and Allowance for Credit Losses	Sep. 30, 2017
Receivables [Abstract]
Loans and Allowance for Credit Losses	Loans and Allowance for Credit Losses Loans, Net of Unearned Income Loans, net of unearned income are summarized as follows: September 30, December 31, 2016 (in thousands) Real-estate - commercial mortgage $ 6,275,140 $ 6,018,582 Commercial - industrial, financial and agricultural 4,223,075 4,087,486 Real-estate - residential mortgage 1,887,907 1,601,994 Real-estate - home equity 1,567,473 1,625,115 Real-estate - construction 973,108 843,649 Consumer 302,448 291,470 Leasing and other 278,658 246,704 Overdrafts 3,400 3,662 Loans, gross of unearned income 15,511,209 14,718,662 Unearned income (24,310 ) (19,390 ) Loans, net of unearned income $ 15,486,899 $ 14,699,272 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. The Corporation’s allowance for credit losses includes: (1) specific allowances allocated to loans evaluated for impairment under FASB ASC Section 310-10-35; and (2) allowances calculated for pools of loans measured 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," above. 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. Commercial loans include both secured 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 include direct consumer installment loans and indirect vehicle loans. The following table presents the components of the allowance for credit losses: September 30, December 31, (in thousands) Allowance for loan losses $ 172,245 $ 168,679 Reserve for unfunded lending commitments 2,504 2,646 Allowance for credit losses $ 174,749 $ 171,325 The following table presents the activity in the allowance for credit losses: Three months ended September 30 Nine months ended September 30 2017 2016 2017 2016 (in thousands) Balance at beginning of period $ 174,998 $ 165,108 $ 171,325 $ 171,412 Loans charged off (7,795 ) (7,672 ) (25,917 ) (29,573 ) Recoveries of loans previously charged off 2,471 3,592 12,766 15,148 Net loans charged off (5,324 ) (4,080 ) (13,151 ) (14,425 ) Provision for credit losses 5,075 4,141 16,575 8,182 Balance at end of period $ 174,749 $ 165,169 $ 174,749 $ 165,169 The Corporation has historically maintained an unallocated allowance for credit losses 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. In 2017, enhancements were made to allow for the impact of these factors and conditions to be quantified in the allowance allocation process. Accordingly, an unallocated allowance for credit losses is no longer necessary. The following table presents the activity in the allowance for loan losses by portfolio segment: Real Estate - Commercial Mortgage Commercial - Industrial, Financial and Agricultural Real Estate - Home Equity Real Estate - Residential Mortgage Real Estate - Construction Consumer Leasing, other and overdrafts Unallocated Total (in thousands) Three months ended September 30, 2017 Balance at June 30, 2017 $ 57,372 $ 67,642 $ 17,456 $ 16,439 $ 9,534 $ 1,794 $ 2,105 $ — $ 172,342 Loans charged off (483 ) (2,714 ) (547 ) (195 ) (2,744 ) (373 ) (739 ) — (7,795 ) Recoveries of loans previously charged off 106 665 252 219 629 193 407 — 2,471 Net loans charged off (377 ) (2,049 ) (295 ) 24 (2,115 ) (180 ) (332 ) — (5,324 ) Provision for loan losses (1) (2,008 ) 5,392 1,297 220 (283 ) 383 226 — 5,227 Balance at Sept 30, 2017 $ 54,987 $ 70,985 $ 18,458 $ 16,683 $ 7,136 $ 1,997 $ 1,999 $ — $ 172,245 Three months ended September 30, 2016 Balance at June 30, 2016 $ 43,740 $ 51,755 $ 26,170 $ 21,226 $ 5,772 $ 2,984 $ 2,518 $ 8,381 $ 162,546 Loans charged off (1,350 ) (3,144 ) (709 ) (802 ) (150 ) (685 ) (832 ) — (7,672 ) Recoveries of loans previously charged off 296 1,539 241 228 898 222 168 — 3,592 Net loans charged off (1,054 ) (1,605 ) (468 ) (574 ) 748 (463 ) (664 ) — (4,080 ) Provision for loan losses (1) 3,171 (1,871 ) 1,419 1,452 23 852 1,075 (2,061 ) 4,060 Balance at September 30, 2016 $ 45,857 $ 48,279 $ 27,121 $ 22,104 $ 6,543 $ 3,373 $ 2,929 $ 6,320 $ 162,526 Nine months ended September 30, 2017 Balance at December 31, 2016 $ 46,842 $ 54,353 $ 26,801 $ 22,929 $ 6,455 $ 3,574 $ 3,192 $ 4,533 $ 168,679 Loans charged off (1,949 ) (13,594 ) (1,837 ) (535 ) (3,765 ) (1,659 ) (2,578 ) — (25,917 ) Recoveries of loans previously charged off 1,490 6,830 604 600 1,550 899 793 — 12,766 Net loans charged off (459 ) (6,764 ) (1,233 ) 65 (2,215 ) (760 ) (1,785 ) — (13,151 ) Provision for loan losses (1) 8,604 23,396 (7,110 ) (6,311 ) 2,896 (817 ) 592 (4,533 ) 16,717 Balance at September 30, 2017 $ 54,987 $ 70,985 $ 18,458 $ 16,683 $ 7,136 $ 1,997 $ 1,999 $ — $ 172,245 Nine months ended September 30, 2016 Balance at December 31, 2015 $ 47,866 $ 57,098 $ 22,405 $ 21,375 $ 6,529 $ 2,585 $ 2,468 $ 8,728 $ 169,054 Loans charged off (3,406 ) (13,957 ) (3,295 ) (2,210 ) (1,218 ) (2,261 ) (3,226 ) — (29,573 ) Recoveries of loans previously charged off 2,488 6,789 929 784 2,844 957 357 — 15,148 Net loans charged off (918 ) (7,168 ) (2,366 ) (1,426 ) 1,626 (1,304 ) (2,869 ) — (14,425 ) Provision for loan losses (1) (1,091 ) (1,651 ) 7,082 2,155 (1,612 ) 2,092 3,330 (2,408 ) 7,897 Balance at September 30, 2016 $ 45,857 $ 48,279 $ 27,121 $ 22,104 $ 6,543 $ 3,373 $ 2,929 $ 6,320 $ 162,526 (1) The provision for loan losses excluded decreases of $152,000 and $142,000 in the reserve for unfunded lending commitments for the three and nine months ended September 30, 2017 , respectively and increases of $81,000 and $ 285,000 in the reserve for unfunded lending commitments for the three and nine months ended September 30, 2016, respectively. The following table presents loans, net of unearned income and their related allowance for loan losses, by portfolio segment: Real Estate - Commercial Mortgage Commercial - Industrial, Financial and Agricultural Real Estate - Home Equity Real Estate - Residential Mortgage Real Estate - Construction Consumer Leasing, other and overdrafts Unallocated Total (in thousands) Allowance for loan losses at September 30, 2017: Measured for impairment under FASB ASC Subtopic 450-20 $ 47,261 $ 55,486 $ 7,632 $ 6,488 $ 5,702 $ 1,976 $ 1,999 $ — $ 126,544 Evaluated for impairment under FASB ASC Section 310-10-35 7,726 15,499 10,826 10,195 1,434 21 — N/A 45,701 $ 54,987 $ 70,985 $ 18,458 $ 16,683 $ 7,136 $ 1,997 $ 1,999 $ — $ 172,245 Loans, net of unearned income at September 30, 2017: Measured for impairment under FASB ASC Subtopic 450-20 $ 6,228,935 $ 4,162,857 $ 1,543,551 $ 1,845,329 $ 959,584 $ 302,415 $ 257,748 N/A $ 15,300,419 Evaluated for impairment under FASB ASC Section 310-10-35 46,205 60,218 23,922 42,578 13,524 33 — N/A 186,480 $ 6,275,140 $ 4,223,075 $ 1,567,473 $ 1,887,907 $ 973,108 $ 302,448 $ 257,748 N/A $ 15,486,899 Allowance for loan losses at September 30, 2016: Measured for impairment under FASB ASC Subtopic 450-20 $ 36,151 $ 38,858 $ 17,828 $ 10,410 $ 4,422 $ 3,346 $ 2,929 $ 6,320 $ 120,264 Evaluated for impairment under FASB ASC Section 310-10-35 9,706 9,421 9,293 11,694 2,121 27 — N/A 42,262 $ 45,857 $ 48,279 $ 27,121 $ 22,104 $ 6,543 $ 3,373 $ 2,929 $ 6,320 $ 162,526 Loans, net of unearned income at September 30, 2016: Measured for impairment under FASB ASC Subtopic 450-20 $ 5,763,863 $ 3,972,461 $ 1,621,731 $ 1,496,461 $ 850,315 $ 283,633 $ 219,780 N/A $ 14,208,244 Evaluated for impairment under FASB ASC Section 310-10-35 55,052 51,658 18,690 46,235 11,319 40 — N/A 182,994 $ 5,818,915 $ 4,024,119 $ 1,640,421 $ 1,542,696 $ 861,634 $ 283,673 $ 219,780 N/A $ 14,391,238 N/A - Not applicable. Impaired Loans 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 troubled debt restructurings ("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 individually evaluated for impairment under FASB ASC Section 310-10-35 are measured for losses on a quarterly basis. As of September 30, 2017 and December 31, 2016 , substantially all of the Corporation’s individually evaluated impaired loans with total outstanding 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. As of September 30, 2017 and 2016 , approximately 95% and 73% , 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 of the collateral using appraisals performed by state certified third-party appraisers that had been updated in 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 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% . The following table presents total impaired loans by class segment: September 30, 2017 December 31, 2016 Unpaid Principal Balance Recorded Investment Related Allowance Unpaid Principal Balance Recorded Investment Related Allowance (in thousands) With no related allowance recorded: Real estate - commercial mortgage $ 24,722 $ 21,000 $ — $ 28,757 $ 25,447 $ — Commercial - secured 32,738 30,053 — 29,296 25,526 — Real estate - residential mortgage 4,603 4,603 — 4,689 4,689 — Construction - commercial residential 14,086 9,450 — 6,271 4,795 — 76,149 65,106 69,013 60,457 With a related allowance recorded: Real estate - commercial mortgage 32,770 25,205 7,726 37,132 29,446 10,162 Commercial - secured 33,481 29,189 14,974 27,767 22,626 13,198 Commercial - unsecured 1,236 976 525 1,122 823 455 Real estate - home equity 27,739 23,922 10,826 23,971 19,205 9,511 Real estate - residential mortgage 43,979 37,975 10,195 48,885 41,359 11,897 Construction - commercial residential 6,119 2,883 1,006 10,103 4,206 1,300 Construction - commercial 186 100 36 681 435 145 Construction - other 1,096 1,091 392 1,096 1,096 423 Consumer - direct 24 19 13 21 21 14 Consumer - indirect 14 14 8 19 19 12 146,644 121,374 45,701 150,797 119,236 47,117 Total $ 222,793 $ 186,480 $ 45,701 $ 219,810 $ 179,693 $ 47,117 As of September 30, 2017 and December 31, 2016 , there were $65.1 million and $60.5 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 they were previously 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: Three months ended September 30 Nine months ended September 30 2017 2016 2017 2016 Average Interest Average Interest Average Interest Average Interest (in thousands) With no related allowance recorded: Real estate - commercial mortgage $ 21,698 $ 72 $ 25,048 $ 78 $ 22,770 $ 213 $ 23,929 219 Commercial - secured 33,044 46 23,836 32 29,309 128 18,400 68 Real estate - residential mortgage 4,616 27 6,151 33 4,645 79 5,826 96 Construction - commercial residential 8,747 5 5,734 10 6,745 11 6,658 45 Construction - commercial 295 — — — 298 — — — 68,400 150 60,769 153 63,767 431 54,813 428 With a related allowance recorded: Real estate - commercial mortgage 25,910 86 29,139 91 27,518 259 32,310 303 Commercial - secured 24,334 33 21,688 29 23,291 96 26,665 100 Commercial - unsecured 818 1 953 1 806 1 903 3 Real estate - home equity 22,837 150 18,283 76 20,957 362 17,589 203 Real estate - residential mortgage 38,329 225 40,913 221 39,584 680 42,399 683 Construction - commercial residential 5,047 4 4,947 8 5,397 11 5,568 37 Construction - commercial 113 — 476 — 186 — 546 — Construction - other 1,091 — 756 — 1,094 — 579 — Consumer - direct 19 — 19 — 19 — 17 1 Consumer - indirect 15 — 11 — 17 — 14 — Leasing, other and overdrafts — — — — 356 — 712 — 118,513 499 117,185 426 119,225 1,409 127,302 1,330 Total $ 186,913 $ 649 $ 177,954 $ 579 $ 182,992 $ 1,840 $ 182,115 1,758 (1) All impaired loans, excluding accruing TDRs, were non-accrual loans. Interest income recognized for the three and nine months ended September 30, 2017 and 2016 represents amounts earned on accruing TDRs. Credit Quality Indicators and Non-performing Assets 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 constitute an undue and unwarranted credit risk, but not to a 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 following table presents internal credit risk ratings for the indicated loan class segments: Pass Special Mention Substandard or Lower Total September 30, 2017 December 31, 2016 September 30, 2017 December 31, 2016 September 30, 2017 December 31, 2016 September 30, 2017 December 31, 2016 (dollars in thousands) Real estate - commercial mortgage $ 6,028,523 $ 5,763,122 $ 118,947 $ 132,484 $ 127,670 $ 122,976 $ 6,275,140 $ 6,018,582 Commercial - secured 3,807,138 3,686,152 98,639 128,873 183,181 118,527 4,088,958 3,933,552 Commercial - unsecured 127,561 145,922 3,474 4,481 3,082 3,531 134,117 153,934 Total commercial - industrial, financial and agricultural 3,934,699 3,832,074 102,113 133,354 186,263 122,058 4,223,075 4,087,486 Construction - commercial residential 134,786 113,570 6,746 15,447 14,595 13,172 156,127 142,189 Construction - commercial 743,111 635,963 4,418 3,412 3,869 5,115 751,398 644,490 Total construction (excluding Construction - other) 877,897 749,533 11,164 18,859 18,464 18,287 907,525 786,679 $ 10,841,119 $ 10,344,729 $ 232,224 $ 284,697 $ 332,397 $ 263,321 $ 11,405,740 $ 10,892,747 % of Total 95.1 % 95.0 % 2.0 % 2.6 % 2.9 % 2.4 % 100.0 % 100.0 % The risk rating process allows management to identify credits that potentially carry more risk in a timely manner and to allocate resources to managing troubled accounts. The Corporation believes that internal risk ratings are the most relevant credit quality indicator for the class segments presented above. The migration of loans through the various internal risk rating categories is a significant component of the allowance for credit loss methodology, which bases the probability of default on this migration. Assigning risk ratings involves judgment. The Corporation's loan review officers provide an independent assessment of risk rating accuracy. Ratings may be changed based on the ongoing monitoring procedures performed by loan officers or credit administration staff, or if specific loan review activities identify a deterioration or an improvement in the loan. The Corporation does not assign internal risk ratings to smaller balance, homogeneous loans, such as home equity, residential mortgage, construction loans to individuals secured by residential real estate, consumer and lease receivables. 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 losses methodology for those loans, which bases the probability of default on this migration. The following table presents a summary of performing, delinquent and non-performing loans for the indicated loan class segments: Performing Delinquent (1) Non-performing (2) Total September 30, 2017 December 31, 2016 September 30, 2017 December 31, 2016 September 30, 2017 December 31, 2016 September 30, 2017 December 31, 2016 (dollars in thousands) Real estate - home equity $ 1,542,289 $ 1,602,687 $ 12,955 $ 9,274 $ 12,229 $ 13,154 $ 1,567,473 $ 1,625,115 Real estate - residential mortgage 1,845,495 1,557,995 20,769 20,344 21,643 23,655 1,887,907 1,601,994 Construction - other 64,110 55,874 382 — 1,091 1,096 65,583 56,970 Consumer - direct 55,490 93,572 158 1,752 63 1,563 55,711 96,887 Consumer - indirect 243,723 190,656 2,834 3,599 180 328 246,737 194,583 Total consumer 299,213 284,228 2,992 5,351 243 1,891 302,448 291,470 Leasing 256,784 229,591 884 1,068 80 317 257,748 230,976 $ 4,007,891 $ 3,730,375 $ 37,982 $ 36,037 $ 35,286 $ 40,113 $ 4,081,159 $ 3,806,525 % of Total 98.2 % 98.0 % 0.9 % 0.9 % 0.9 % 1.1 % 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 non-performing assets: September 30, December 31, (in thousands) Non-accrual loans $ 123,345 $ 120,133 Loans 90 days or more past due and still accruing 13,124 11,505 Total non-performing loans 136,469 131,638 Other real estate owned (OREO) 10,542 12,815 Total non-performing assets $ 147,011 $ 144,453 The following tables present past due status and non-accrual loans by portfolio segment and class segment: September 30, 2017 30-59 Days Past Due 60-89 Days Past Due ≥ 90 Days Past Due and Accruing Non- accrual Total ≥ 90 Days Total Past Due Current Total (in thousands) Real estate - commercial mortgage $ 10,276 $ 2,297 $ 2,884 $ 31,766 $ 34,650 $ 47,223 $ 6,227,917 $ 6,275,140 Commercial - secured 8,382 2,378 1,503 51,787 53,290 64,050 4,024,908 4,088,958 Commercial - unsecured 114 34 — 919 919 1,067 133,050 134,117 Total commercial - industrial, financial and agricultural 8,496 2,412 1,503 52,706 54,209 65,117 4,157,958 4,223,075 Real estate - home equity 11,192 1,763 3,096 9,133 12,229 25,184 1,542,289 1,567,473 Real estate - residential mortgage 15,106 5,663 5,258 16,385 21,643 42,412 1,845,495 1,887,907 Construction - commercial residential 400 18 60 12,164 12,224 12,642 143,485 156,127 Construction - commercial 366 — — 100 100 466 750,932 751,398 Construction - other 382 — — 1,091 1,091 1,473 64,110 65,583 Total real estate - construction 1,148 18 60 13,355 13,415 14,581 958,527 973,108 Consumer - direct 118 40 63 — 63 221 55,490 55,711 Consumer - indirect 2,393 441 180 — 180 3,014 243,723 246,737 Total consumer 2,511 481 243 — 243 3,235 299,213 302,448 Leasing, other and overdrafts 764 120 80 — 80 964 256,784 257,748 Total $ 49,493 $ 12,754 $ 13,124 $ 123,345 $ 136,469 $ 198,716 $ 15,288,183 $ 15,486,899 December 31, 2016 30-59 Days Past Due 60-89 Days Past Due ≥ 90 Days Past Due and Accruing Non- accrual Total ≥ 90 Days Total Past Due Current Total (in thousands) Real estate - commercial mortgage $ 6,254 $ 1,622 $ 383 $ 38,936 $ 39,319 $ 47,195 $ 5,971,387 $ 6,018,582 Commercial - secured 6,660 2,616 959 41,589 42,548 51,824 3,881,728 3,933,552 Commercial - unsecured 898 35 152 760 912 1,845 152,089 153,934 Total commercial - industrial, financial and agricultural 7,558 2,651 1,111 42,349 43,460 53,669 4,033,817 4,087,486 Real estate - home equity 6,596 2,678 2,543 10,611 13,154 22,428 1,602,687 1,625,115 Real estate - residential mortgage 15,600 4,744 5,224 18,431 23,655 43,999 1,557,995 1,601,994 Construction - commercial residential 233 51 36 8,275 8,311 8,595 133,594 142,189 Construction - commercial 743 — — 435 435 1,178 643,312 644,490 Construction - other — — — 1,096 1,096 1,096 55,874 56,970 Total real estate - construction 976 51 36 9,806 9,842 10,869 832,780 843,649 Consumer - direct 1,211 541 1,563 — 1,563 3,315 93,572 96,887 Consumer - indirect 3,200 399 328 — 328 3,927 190,656 194,583 Total consumer 4,411 940 1,891 — 1,891 7,242 284,228 291,470 Leasing, other and overdrafts 543 525 317 — 317 1,385 229,591 230,976 Total $ 41,938 $ 13,211 $ 11,505 $ 120,133 $ 131,638 $ 186,787 $ 14,512,485 $ 14,699,272 The following table presents TDRs, by class segment: September 30, December 31, (in thousands) Real-estate - residential mortgage $ 26,193 $ 27,617 Real-estate - commercial mortgage 14,439 15,957 Real estate - home equity 14,789 8,594 Commercial 7,512 6,627 Construction 169 726 Consumer 33 39 Total accruing TDRs 63,135 59,560 Non-accrual TDRs (1) 28,742 27,850 Total TDRs $ 91,877 $ 87,410 (1) Included in non-accrual loans in the preceding table detailing non-performing assets. As of September 30, 2017 and December 31, 2016 , there were $3.8 million and $3.6 million of commitments, respectively, 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 three and nine months ended September 30, 2017 and 2016 : Three months ended September 30 Nine months ended September 30 2017 2016 2017 2016 Number of Loans Post-Modification Recorded Investment Number of Loans Post-Modification Recorded Investment Number of Loans Post-Modification Recorded Investment Number of Loans Post-Modification Recorded Investment (dollars in thousands) Real estate – residential mortgage: Extend maturity with rate concession 2 $ 468 — $ — 2 $ 468 — $ — Extend maturity without rate concession 2 151 — — 4 488 2 $ 315 Bankruptcy — — 2 350 2 335 3 723 Real estate - commercial mortgage: Extend maturity without rate concession 2 1,247 — — 6 2,228 — $ — Bankruptcy — — — — 1 12 — $ — Real estate - home equity: Extend maturity without rate concession 14 1,315 24 1,063 47 3,874 63 $ 3,058 Bankruptcy 6 127 11 563 23 1,643 33 $ 2,279 Commercial: Extend maturity without rate concession 1 160 4 1,826 9 5,853 10 3,802 Bankruptcy — — — — 1 490 — — Commercial – unsecured: Extend maturity without rate concession — — — — 1 33 2 103 Construction - commercial residential: Extend maturity without rate concession — — — — 1 1,204 — — Consumer - direct: Bankruptcy — — — — — — 1 2 Consumer - indirect: Bankruptcy — — 1 21 — — 1 21 Total 27 $ 3,468 42 $ 3,823 97 $ 16,628 115 $ 10,303 The following table presents TDRs, by class segment, as of September 30, 2017 and 2016 , that were modified in the previous 12 months and had a post-modification payment default during the nine months ended September 30, 2017 and 2016 . The Corporation defines a payment default as a single missed payment. 2017 2016 Number of Loans Recorded Investment Number of Loans Recorded Investment (dollars in thousands) Real estate - residential mortgage 5 $ 1,321 7 $ 1,395 Real estate - commercial mortgage 3 653 2 129 Real estate - home equity 27 1,598 29 1,902 Commercial 2 264 6 2,593 Commercial - unsecured — — 1 26 Construction - commercial residential 1 1,198 — — Construction - other 1 411 — — Total 39 $ 5,445 45 $ 6,045

Mortgage Servicing Rights

Mortgage Servicing Rights	9 Months Ended
Mortgage Servicing Rights	Sep. 30, 2017
Transfers and Servicing [Abstract]
Mortgage Servicing Rights	Mortgage Servicing Rights The following table summarizes the changes in mortgage servicing rights ("MSRs"), which are included in other assets on the consolidated balance sheets: Three months ended September 30 Nine months ended September 30 2017 2016 2017 2016 (in thousands) Amortized cost: Balance at beginning of period $ 38,180 $ 39,874 $ 38,822 $ 40,944 Originations of mortgage servicing rights 1,333 1,499 3,719 3,927 Amortization (1,639 ) (2,064 ) (4,667 ) (5,562 ) Balance at end of period $ 37,874 $ 39,309 $ 37,874 $ 39,309 Valuation allowance: Balance at beginning of period $ — $ (1,721 ) $ (1,291 ) $ — (Additions) reductions to valuation allowance — (1,280 ) 1,291 (3,001 ) Balance at end of period $ — $ (3,001 ) $ — $ (3,001 ) Net MSRs at end of period $ 37,874 $ 36,308 $ 37,874 $ 36,308 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 prepayment projections. Based on its fair value analysis, the Corporation determined that no adjustment to the valuation allowance was necessary for the three months ended September 30, 2017, while a reduction of $1.3 million was required for the nine months ended September 30, 2017 . Additions to the valuation allowance of $ 1.3 million and $3.0 million were necessary for the three and nine months ended September 30, 2016 , respectively. Additions and reductions to the valuation allowance are recorded as decreases and increases, respectively, to "mortgage banking income" on the consolidated statements of income.

Stock-Based Compensation

Stock-Based Compensation	9 Months Ended
Stock-Based Compensation	Sep. 30, 2017
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Stock-Based Compensation	Stock-Based Compensation The Corporation grants equity awards to employees, consisting of stock options, restricted stock, RSUs and 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. The fair value of equity awards granted to employees is recognized as compensation expense over the period during which employees are required to provide service in exchange for such awards. Compensation expense for PSUs is also recognized over the period during which employees are required to provide service in exchange for such awards, however, compensation expense may vary based on the expectations for actual performance relative to defined performance measures. The Corporation also grants 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. 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. The following table presents compensation expense and the related tax benefits for equity awards recognized in the consolidated statements of income: Three months ended September 30 Nine months ended September 30 2017 2016 2017 2016 (in thousands) Stock-based compensation expense $ 1,570 $ 1,552 $ 3,339 $ 4,808 Tax benefit (628 ) (536 ) (3,312 ) (1,611 ) Stock-based compensation expense, net of tax benefit $ 942 $ 1,016 $ 27 $ 3,197 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. Fair values for restricted stock, RSUs and a majority of PSUs are based on the trading price of the Corporation’s stock on the date of grant and earn dividends or dividend equivalents during the vesting period, which are forfeitable if the awards do not vest. The fair value of certain PSUs are estimated through the use of the Monte Carlo valuation methodology as of the date of grant. As of September 30, 2017 , the Employee Equity Plan had 11.1 million shares reserved for future grants through 2023 , and the Directors’ Plan had approximately 360,000 shares reserved for future grants through 2021 .

Employee Benefit Plans

Employee Benefit Plans	9 Months Ended
Employee Benefit Plans	Sep. 30, 2017
Retirement Benefits [Abstract]
Employee Benefit Plans	Employee Benefit Plans The net periodic benefit cost for the Corporation’s Defined Benefit Pension Plan ("Pension Plan") consisted of the following components: Three months ended September 30 Nine months ended September 30 2017 2016 2017 2016 (in thousands) Service cost (1) $ — $ 172 $ — $ 516 Interest cost 830 880 2,490 2,640 Expected return on plan assets (451 ) (580 ) (1,353 ) (1,739 ) Net amortization and deferral 663 605 1,989 1,815 Net periodic benefit cost $ 1,042 $ 1,077 $ 3,126 $ 3,232 (1) The Pension Plan was curtailed effective January 1, 2008. Service cost was related to administrative costs associated with the plan and was not due to the accrual of additional participant benefits. The net periodic benefit of the Corporation’s Postretirement Benefits Plan ("Postretirement Plan") consisted of the following components: Three months ended September 30 Nine months ended September 30 2017 2016 2017 2016 (in thousands) Interest cost $ 17 $ 21 $ 51 $ 64 Expected return on plan assets — — — (1 ) Net accretion and deferral (141 ) (138 ) (423 ) (413 ) Net periodic benefit $ (124 ) $ (117 ) $ (372 ) $ (350 ) The Corporation recognizes the funded status of its Pension Plan and Postretirement Plan on the consolidated balance sheets and recognizes the change in that funded status through other comprehensive income.

Derivative Financial Instrument

Derivative Financial Instruments	9 Months Ended
Derivative Financial Instruments	Sep. 30, 2017
Derivative Instruments and Hedging Activities Disclosure [Abstract]
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 and 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, and changes in fair values during the period are 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 and the gross fair values are recorded in other assets and other liabilities on the consolidated balance sheets, with changes in fair values during the period recorded in other non-interest expense on the consolidated statements of income. Fulton Bank, N.A. ("Fulton Bank"), the Corporation's largest banking subsidiary, exceeded $10 billion in total assets as of December 31, 2016 and was required to clear all eligible interest rate swap contracts with a central counterparty, effective January 1, 2017. As a result, Fulton Bank became subject to the regulations of the Commodity Futures Trading Commission ("CFTC"). 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 fair values are recorded in other assets and other liabilities on the consolidated balance sheets, with changes in fair values during the period recorded within other service charges and fees on the consolidated statements of income. The following table presents a summary of the notional amounts and fair values of derivative financial instruments: September 30, 2017 December 31, 2016 Notional Asset Notional Asset (in thousands) Interest Rate Locks with Customers Positive fair values $ 141,250 $ 1,283 $ 87,119 $ 863 Negative fair values 5,530 (16 ) 18,239 (227 ) Net interest rate locks with customers 1,267 636 Forward Commitments Positive fair values 27,562 48 70,031 2,223 Negative fair values 77,000 (207 ) 19,964 (112 ) Net forward commitments (159 ) 2,111 Interest Rate Swaps with Customers Positive fair values 1,329,394 34,028 876,744 24,397 Negative fair values 578,120 (13,682 ) 583,060 (16,998 ) Net interest rate swaps with customers 20,346 7,399 Interest Rate Swaps with Dealer Counterparties Positive fair values 578,120 13,682 583,060 16,998 Negative fair values (1) 1,329,394 (27,663 ) 876,744 (24,397 ) Net interest rate swaps with dealer counterparties (13,981 ) (7,399 ) Foreign Exchange Contracts with Customers Positive fair values 5,912 332 11,674 504 Negative fair values 5,473 (226 ) 4,659 (221 ) Net foreign exchange contracts with customers 106 283 Foreign Exchange Contracts with Correspondent Banks Positive fair values 8,978 293 7,040 241 Negative fair values 4,420 (280 ) 12,869 (447 ) Net foreign exchange contracts with correspondent banks 13 (206 ) Net derivative fair value asset $ 7,592 $ 2,824 (1) Includes centrally cleared interest rate swaps with a notional amount of $324.3 million and a fair value of $0 as of September 30, 2017 . Collateral is posted daily through a clearing agent for changes in the fair value. The following table presents a summary of the fair value gains (losses) on derivative financial instruments: Three months ended September 30 Nine months ended September 30 2017 2016 2017 2016 (in thousands) Interest rate locks with customers $ (59 ) $ 178 $ 631 $ 1,922 Forward commitments (48 ) 970 (2,270 ) (1,042 ) Interest rate swaps with customers (47 ) (1,948 ) 12,947 48,052 Interest rate swaps with dealer counterparties 1,248 1,948 (6,582 ) (48,052 ) Foreign exchange contracts with customers 140 47 (177 ) 502 Foreign exchange contracts with correspondent banks (111 ) (266 ) 219 (613 ) Net fair value gains on derivative financial instruments $ 1,123 $ 929 $ 4,768 $ 769 Fair Value Option U.S. GAAP permits entities to measure many financial instruments and certain other items at fair value and requires certain disclosures for amounts for which the fair value option is applied. The Corporation has elected to measure mortgage loans held for sale at fair value to more accurately reflect the financial results of its mortgage banking activities in its consolidated financial statements. Derivative financial instruments related to these activities are also recorded at fair value, as noted above. 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. The following table presents a summary of the Corporation’s mortgage loans held for sale: September 30, December 31, (in thousands) Cost $ 22,615 $ 28,708 Fair value 23,049 28,697 During the three months ended September 30, 2017 and 2016 , the Corporation recorded losses related to changes in fair values of mortgage loans held for sale of $120,000 and $360,000 , respectively. During the nine months ended September 30, 2017 and 2016 , the Corporation recorded gains related to changes in fair values of mortgage loans held for sale of $445,000 and $504,000 , respectively. Balance Sheet Offsetting Certain financial assets and liabilities may be eligible for offset on the consolidated balance sheets because they are subject to master netting arrangements or similar agreements. The Corporation elects to not offset certain assets and liabilities subject to such arrangements on the consolidated financial statements. The Corporation is a party to interest rate swap transactions with financial institution counterparties and customers, disclosed in detail above. 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. Collateral is posted daily through a clearing agent for changes in the fair value of centrally cleared derivatives with negative fair values. As a result, the total fair values of interest rate swap derivative assets and derivative liabilities recognized on the consolidated balance sheet are not equal and offsetting. 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, 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. 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. The following table presents the Corporation's financial instruments that are eligible for offset, and the effects of offsetting, on the consolidated balance sheets: 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) September 30, 2017 Interest rate swap derivative assets $ 47,710 $ (14,163 ) $ — $ 33,547 Foreign exchange derivative assets with correspondent banks 293 (280 ) — 13 Total $ 48,003 $ (14,443 ) $ — $ 33,560 Interest rate swap derivative liabilities $ 41,345 $ (14,163 ) $ (15,520 ) $ 11,662 Foreign exchange derivative liabilities with correspondent banks 280 (280 ) — — Total $ 41,625 $ (14,443 ) $ (15,520 ) $ 11,662 December 31, 2016 Interest rate swap derivative assets $ 41,395 $ (15,117 ) $ — $ 26,278 Foreign exchange derivative assets with correspondent banks 241 (241 ) — — Total $ 41,636 $ (15,358 ) $ — $ 26,278 Interest rate swap derivative liabilities $ 41,395 $ (15,117 ) $ (4,010 ) $ 22,268 Foreign exchange derivative liabilities with correspondent banks 447 (241 ) (206 ) — Total $ 41,842 $ (15,358 ) $ (4,216 ) $ 22,268 (1) For derivative assets, amounts represent any derivative liability fair values that could be offset in the event of counterparty or customer default. For derivative liabilities, amounts represent any derivative asset fair values that could be offset in the event of counterparty or customer default. (2) Amounts represent collateral received from the counterparty or (posted by the Corporation).

Commitments and Contingencies

Commitments and Contingencies	9 Months Ended
Commitments and Contingencies	Sep. 30, 2017
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies	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. Those financial instruments include commitments to extend credit and letters of credit, which involve, to varying degrees, elements of credit risk and interest rate risk in excess of the amounts recognized on the Corporation’s consolidated balance sheets. Exposure to credit loss in the event of nonperformance by the other party to the financial instrument for commitments to extend credit and letters of credit is represented by the outstanding amount of those instruments. The outstanding amounts of commitments to extend credit and letters of credit were as follows: September 30, December 31, 2016 (in thousands) Commitments to extend credit $ 6,418,318 $ 6,075,567 Standby letters of credit 331,096 356,359 Commercial letters of credit 41,819 38,901 The Corporation records a reserve for unfunded lending commitments, which represents management’s estimate of losses associated with unused commitments to extend credit. See Note 5, "Loans and Allowance for Credit Losses," for additional details. Residential Lending Residential mortgages originated and sold by the Corporation 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 prime loans it originates to non-government sponsored agency investors. The Corporation provides customary representations and warranties to government sponsored entities and investors that specify, among other things, that the loans have been underwritten to the standards established by the government sponsored entity or investor. The Corporation may be required to repurchase a loan, or reimburse the government sponsored entity 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 both September 30, 2017 and December 31, 2016 , 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"). 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 September 30, 2017 , the unpaid principal balance of loans sold under the MPF Program was approximately $89 million . As of September 30, 2017 and December 31, 2016 , the reserve for estimated credit losses related to loans sold under the MPF Program was $1.3 million and $1.7 million , respectively. Required reserves are calculated based on delinquency status and estimated loss rates established through the Corporation's existing allowance for credit losses methodology for residential mortgage loans. As of September 30, 2017 and December 31, 2016 , the total reserve for losses on residential mortgage loans sold was $2.1 million and $2.5 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 September 30, 2017 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. Legal Proceedings The Corporation and its subsidiaries are involved in various legal proceedings in the ordinary course of business of the Corporation. 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. 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 condition 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. BSA/AML 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. The Corporation and its bank subsidiaries have implemented numerous enhancements to the BSA/AML Compliance Program, completed the retrospective reviews required under the Consent Orders, and continue to strengthen and refine the BSA/AML Compliance Program to achieve a sustainable program 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. On October 27, 2017, the Office of the Comptroller of the Currency (the "OCC") terminated the Consent Orders that it issued on July 14, 2014 to three of the Corporation's bank subsidiaries, Fulton Bank, N.A., FNB Bank, N.A. and Swineford National Bank, relating to deficiencies in the BSA/AML Compliance Programs at those bank subsidiaries. Fair Lending Investigation During the second quarter of 2015, Fulton Bank, N.A., 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 (specifically, the Equal Credit Opportunity Act and the Fair Housing Act) by Fulton Bank, N.A. in certain geographies. Fulton Bank, N.A. has been and is cooperating with the Department and responding to the Department’s requests for information. During the third quarter of 2016, the Department informed the Corporation, Fulton Bank, N.A., and three of the Corporation’s other bank subsidiaries, Fulton Bank of New Jersey, The Columbia Bank and Lafayette Ambassador Bank, that the Department was expanding its investigation of potential lending discrimination on the basis of race and national origin to encompass additional geographies that were not included in the initial letter from the Department. In addition to requesting information concerning the lending activities of these bank subsidiaries, the Department also requested information concerning the Corporation and the residential mortgage lending activities conducted under the Fulton Mortgage Company brand, the trade name used by all of the Corporation’s bank subsidiaries for residential mortgage lending. The investigation relates to lending activities during the period January 1, 2009 to the present. The Corporation and the identified bank subsidiaries are cooperating with the Department and responding to the Department’s requests for information. The Corporation and its bank subsidiaries are not able at this time to determine the terms on which this investigation will be resolved or the timing of such resolution, or to reliably estimate the amounts of any settlement, fines or other penalties or the cost of any other remedial actions, if enforcement action is taken. In addition, should the investigation result in an enforcement action against the Corporation or its bank subsidiaries, or a settlement with the Department, the ability of the Corporation and its bank subsidiaries to engage in certain expansion or other activities may be restricted. Agostino, et al. Litigation Fulton Bank, N.A. (the "Bank"), the Corporation’s largest bank subsidiary, and two unrelated, third-party defendants, Ameriprise Financial Services, Inc. (“Ameriprise”) and Riverview Bank (“Riverview”), have been named as defendants in a lawsuit brought on behalf of a group of 67 plaintiffs filed on March 31, 2016, in the Court of Common Pleas for Dauphin County, Pennsylvania (Agostino, et al. v. Ameriprise Financial Services, Inc., et al., No. 2016-CV-2048-CV). The plaintiffs in this action, who are individuals, trustees of certain irrevocable trusts, or the executors of the estates of deceased individuals, were clients of Jeffrey M. Mottern, a now-deceased attorney, who is alleged to have operated a fraud scheme over a period of years through the sale of fictitious high-yield investments or by otherwise misappropriating funds entrusted to Mr. Mottern. Mr. Mottern is alleged to have used the proceeds of these activities to engage in speculative securities trading through defendant Ameriprise, which caused significant losses, and for Mr. Mottern’s personal expenses. The allegations against the Bank relate to a commercial checking account at the Bank maintained by Mr. Mottern in connection with Mr. Mottern’s law practice. The lawsuit alleges that the Bank is liable to the plaintiffs for failing to properly monitor Mr. Mottern’s checking account and detect Mr. Mottern’s fraudulent activity, and specifically alleges that the Bank aided and abetted Mr. Mottern’s: (1) fraud; (2) breach of fiduciary duty; (3) violations of the Pennsylvania Unfair Trade Practices and Consumer Protection Law; and (4) conversion. Similar claims have been asserted against Ameriprise and Riverview, which allegedly maintained a personal brokerage account and a trust account for client or other third-party funds, respectively, for Mr. Mottern. The lawsuit seeks damages from the defendants, including the Bank, alleged to be in excess of $11.3 million , treble damages and attorneys’ fees with respect to alleged violations of the Pennsylvania Unfair Trade Practices and Consumer Protection Law, punitive damages, plus interest and costs. On April 29, 2016, the Bank filed a Notice of Removal to remove this lawsuit to the United States District Court for the Middle District of Pennsylvania. On May 31, 2016, the plaintiffs filed a motion to remand the lawsuit to the Court of Common Pleas for Dauphin County, Pennsylvania. On October 24, 2016, the District Court granted the plaintiffs' motion and the lawsuit was remanded back to the Court of Common Pleas for Dauphin County. All defendants subsequently filed preliminary objections to the Complaint, including objections that, if granted, would result in dismissal of the case. On May 26, 2017, the Court of Common Pleas for Dauphin County denied all substantive preliminary objections filed by the Bank. On June 23, 2017, the Bank filed its Combined Motion for Partial Reconsideration of the Court’s May 26, 2017 Order and Application for Amendment of the Order to Set Forth Expressly the Statement in Pa.C.S. s. 702(b) (the “Motion”). The Bank also filed its Answer and New Matter (the “Answer”) on June 23, 2017. The plaintiffs subsequently responded to the Motion and the Answer. In October 2017, the Bank and the plaintiffs agreed to settle the lawsuit. The plaintiffs' Steering Committee, which represents the interests of the 67 plaintiffs, approved the specific terms of the settlement on October 26,2017 and recommended that each plaintiff execute the settlement agreement. The settlement involves the Bank making an aggregate payment to the plaintiffs' attorney on their behalf, in exchange for the plaintiffs' agreement to dismiss the claims against the Bank and any related matters with prejudice. The material terms of the settlement will become effective upon the dismissal of the claims against the Bank by the court, which the plaintiffs have agreed to pursue. The Corporation’s insurance carrier has informed the Corporation that it will reimburse the Corporation for the full amount of the Bank's agreed upon settlement payment, and, as a result, any further financial impact to the Corporation is expected to be immaterial.

Fair Value Measurements

Fair Value Measurements	9 Months Ended
Fair Value Measurements	Sep. 30, 2017
Fair Value Disclosures [Abstract]
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 measured at fair value on both a recurring and nonrecurring basis into the above three levels. The following tables present summaries of the Corporation’s assets and liabilities measured at fair value on a recurring basis and reported on the consolidated balance sheets: September 30, 2017 Level 1 Level 2 Level 3 Total (in thousands) Mortgage loans held for sale $ — $ 23,049 $ — $ 23,049 Available for sale investment securities: Equity securities 13,059 — — 13,059 U.S. Government sponsored agency securities — 6,015 — 6,015 State and municipal securities — 413,913 — 413,913 Corporate debt securities — 89,755 3,222 92,977 Collateralized mortgage obligations — 593,678 — 593,678 Residential mortgage-backed securities — 1,182,086 — 1,182,086 Commercial mortgage-backed securities — 161,632 — 161,632 Auction rate securities — — 98,156 98,156 Total available for sale investment securities 13,059 2,447,079 101,378 2,561,516 Other assets 18,742 49,041 — 67,783 Total assets $ 31,801 $ 2,519,169 $ 101,378 $ 2,652,348 Other liabilities $ 18,607 $ 41,569 $ — $ 60,176 December 31, 2016 Level 1 Level 2 Level 3 Total (in thousands) Mortgage loans held for sale $ — $ 28,697 $ — $ 28,697 Available for sale investment securities: Equity securities 24,526 — — 24,526 U.S. Government sponsored agency securities — 134 — 134 State and municipal securities — 391,641 — 391,641 Corporate debt securities — 106,537 2,872 109,409 Collateralized mortgage obligations — 593,860 — 593,860 Residential mortgage-backed securities — 1,317,838 — 1,317,838 Commercial mortgage-backed securities — 24,563 — 24,563 Auction rate securities — — 97,256 97,256 Total available for sale investment securities 24,526 2,434,573 100,128 2,559,227 Other assets 17,111 44,481 — 61,592 Total assets $ 41,637 $ 2,507,751 $ 100,128 $ 2,649,516 Other liabilities $ 17,032 $ 41,734 $ — $ 58,766 The valuation techniques used to measure fair value for the items in the preceding tables 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 September 30, 2017 and December 31, 2016 were measured based on the price that secondary market investors were offering for loans with similar characteristics. See Note 9, "Derivative Financial Instruments" for details related to the Corporation’s election to measure assets and liabilities at fair value. • Available for sale investment securities – Included in 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 at least 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 common stocks of financial institutions ( $12.1 million at September 30, 2017 and $23.5 million at December 31, 2016 ) and other equity investments ( $1.0 million at September 30, 2017 and December 31, 2016 ). These Level 1 investments are measured at fair value based on quoted prices for identical securities in active markets. • U.S. Government sponsored agency securities/State and municipal securities/Collateralized mortgage obligations/Residential mortgage-backed securities/Commercial 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 ( $50.3 million at September 30, 2017 and $65.2 million at December 31, 2016 ), single-issuer trust preferred securities issued by financial institutions ( $38.3 million at September 30, 2017 and $39.8 million at December 31, 2016 ), pooled trust preferred securities issued by financial institutions ( $422,000 at both September 30, 2017 and December 31, 2016 ) and other corporate debt issued by non-financial institutions ( $4.0 million at both September 30, 2017 and December 31, 2016 ). Level 2 investments include the Corporation’s holdings of subordinated debt, other corporate debt issued by non-financial institutions and $35.5 million and $37.3 million of single-issuer trust preferred securities held at September 30, 2017 and December 31, 2016 , 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 ( $422,000 at both September 30, 2017 and December 31, 2016 ) and certain single-issuer trust preferred securities ( $2.8 million at September 30, 2017 and $2.5 million at December 31, 2016 ). 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 in 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 fair 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 in this category are the following: • Level 1 assets include mutual funds that are held in trust for employee deferred compensation plans ( $18.1 million at September 30, 2017 and $16.4 million at December 31, 2016 ) and the fair value of foreign currency exchange contracts ( $625,000 at September 30, 2017 and $745,000 at December 31, 2016 ). 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 include the fair value of mortgage banking derivatives in the form of interest rate locks and forward commitments with secondary market investors ( $1.3 million at September 30, 2017 and $3.1 million at December 31, 2016 ) and the fair value of interest rate swaps ( $47.7 million at September 30, 2017 and $41.4 million at December 31, 2016 ). The fair values of the Corporation’s 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 9, "Derivative Financial Instruments," for additional information. Other liabilities – Included in this category are the following: • Level 1 liabilities include employee deferred compensation liabilities which represent amounts due to employees under deferred compensation plans ( $18.1 million at September 30, 2017 and $16.4 million at December 31, 2016 ) and the fair value of foreign currency exchange contracts ( $506,000 at September 30, 2017 and $668,000 at December 31, 2016 ). The fair value of these liabilities are determined in the same manner as the related assets, as described under the heading "Other assets" above. • Level 2 liabilities include the fair value of mortgage banking derivatives in the form of interest rate locks and forward commitments with secondary market investors ( $223,000 at September 30, 2017 and $339,000 at December 31, 2016 ) and the fair value of interest rate swaps ( $41.3 million at September 30, 2017 and $41.4 million at December 31, 2016 ). The fair values of these liabilities are determined in the same manner as the related assets, as described under the heading "Other assets" above. The following table presents the changes in the Corporation’s available for sale investment securities measured at fair value on a recurring basis using unobservable inputs (Level 3): Three months ended September 30, 2017 Pooled Trust Single-issuer ARCs (in thousands) Balance at June 30, 2017 $ 422 $ 2,775 $ 97,923 Unrealized adjustment to fair value (1) — (28 ) 233 Discount accretion (2) — 3 — Balance at September 30, 2017 $ 422 $ 2,750 $ 98,156 Three months ended September 30, 2016 Balance at June 30, 2016 $ 706 $ 2,425 $ 97,886 Unrealized adjustment to fair value (1) — 7 (318 ) Discount accretion (2) — 3 158 Balance at September 30, 2016 $ 706 $ 2,435 $ 97,726 Nine months ended September 30, 2017 Pooled Trust Single-issuer ARCs (in thousands) Balance at December 31, 2016 $ 422 $ 2,450 $ 97,256 Unrealized adjustment to fair value (1) — 291 705 Discount accretion (2) — 9 195 Balance at September 30, 2017 $ 422 $ 2,750 $ 98,156 Nine months ended September 30, 2016 Balance at December 31, 2015 $ 706 $ 2,630 $ 98,059 Unrealized adjustment to fair value (1) — (204 ) (668 ) Discount accretion (2) — 9 335 Balance at September 30, 2016 $ 706 $ 2,435 $ 97,726 (1) 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. (2) Included as a component of "net interest income" on the consolidated statements of income. Certain 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 Level 3 financial assets measured at fair value on a nonrecurring basis and reported on the Corporation’s consolidated balance sheets: September 30, 2017 December 31, 2016 (in thousands) Net loans $ 140,779 $ 132,576 OREO 10,542 12,815 MSRs 37,874 37,532 Total assets $ 189,195 $ 182,923 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 measured 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 5, "Loans and Allowance for Credit Losses," for additional details. • OREO – This category includes OREO ( $10.5 million at September 30, 2017 and $12.8 million at December 31, 2016 ) 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 – This category includes MSRs ( $37.9 million at September 30, 2017 and $37.5 million at December 31, 2016 ), classified as Level 3 assets. 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 performed by a third-party valuation expert. Significant inputs to the valuation included 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 September 30, 2017 valuation were 12.4% and 9.5% , 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 estimated fair values of the Corporation’s financial instruments as of September 30, 2017 and December 31, 2016 . In addition, a general description of the methods and assumptions used to estimate such fair values is also provided. September 30, 2017 December 31, 2016 Book Value Estimated Book Value Estimated (in thousands) FINANCIAL ASSETS Cash and due from banks $ 99,803 $ 99,803 $ 118,763 $ 118,763 Interest-bearing deposits with other banks 582,845 582,845 233,763 233,763 Federal Reserve Bank and Federal Home Loan Bank stock 62,951 62,951 57,489 57,489 Loans held for sale (1) 23,049 23,049 28,697 28,697 Available for sale investment securities (1) 2,561,516 2,561,516 2,559,227 2,559,227 Net Loans (1) 15,314,654 15,086,654 14,530,593 14,387,454 Accrued interest receivable 50,082 50,082 46,294 46,294 Other financial assets (1) 219,434 219,434 206,132 206,132 FINANCIAL LIABILITIES Demand and savings deposits $ 13,274,319 $ 13,274,319 $ 12,259,622 $ 12,259,622 Brokered Deposits 109,936 109,936 — — Time deposits 2,757,525 2,759,913 2,753,242 2,769,757 Short-term borrowings 298,751 298,751 541,317 541,317 Accrued interest payable 10,568 10,568 9,632 9,632 Other financial liabilities (1) 234,160 234,160 216,080 216,080 Federal Home Loan Bank advances and other long-term debt 1,038,159 1,035,053 929,403 928,167 (1) These financial instruments, or certain financial instruments in 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 Federal Home Loan Bank ("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 in Level 2 liabilities under FASB ASC Topic 820.

Basis of Presentation Basis of

Basis of Presentation Basis of Presentation (Policies)	9 Months Ended
Basis of Presentation Basis of Presentation (Policies)	Sep. 30, 2017
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Basis of Presentation	Basis of Presentation The accompanying unaudited consolidated financial statements of Fulton Financial Corporation (the "Corporation") have been prepared in conformity with U.S. generally accepted accounting principles ("U.S. GAAP") for interim financial information and with the instructions to Form 10-Q and Rule 10-01 of Regulation S-X. Accordingly, they do not include all of the information and notes required by U.S. GAAP for complete financial statements. The preparation of financial statements in accordance with U.S. GAAP requires management to make estimates and assumptions that affect the amounts of assets and liabilities as of the date of the financial statements as well as revenues and expenses during the period. Actual results could differ from those estimates. In the opinion of management, all adjustments (consisting of normal recurring accruals) considered necessary for a fair presentation have been included. These consolidated financial statements should be read in conjunction with the audited consolidated financial statements and the notes thereto included in the Corporation's Annual Report on Form 10-K for the year ended December 31, 2016 . Operating results for the nine months ended September 30, 2017 are not necessarily indicative of the results that may be expected for the year ending December 31, 2017 . The Corporation evaluates subsequent events through the date of filing of this Form 10-Q with the Securities and Exchange Commission ("SEC").
Recently Issued Accounting Standards	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. The FASB has issued amendments to this standard (ASC Updates 2016-08, 2016-10, 2016-11, 2016-12 and 2017-13). These amendments provide further clarification to the standard. For public business entities, ASC Update 2014-09 is effective for interim and annual reporting periods beginning after December 15, 2017. For the Corporation, this standards update is effective with its March 31, 2018 quarterly report on Form 10-Q. The Corporation has evaluated the impact of the adoption of ASC Update 2014-09 on its consolidated financial statements and has not identified any significant changes in the timing of revenue recognition as a result of this amended guidance at this time. In addition, the Corporation is evaluating the expanded disclosure requirements included in the update. The Corporation plans to adopt this update on January 1, 2018 under the modified retrospective approach and does not expect the adoption of ASC Update 2014-09 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 option is elected. This standard will require equity investments to be measured at fair value, with changes recorded in net income. 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. The standards update also requires expanded qualitative and quantitative disclosures. In September of 2017, the FASB issued clarifying guidance to this standard (ASC Update 2017-13). 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, which requires restatement of all comparative periods in the year of adoption. Early adoption 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. The Corporation currently operates a number of branches that are leased, with the leases accounted for as operating leases that are not recognized on the consolidated balance sheet. Under ASC Update 2016-02, right-of-use assets and lease liabilities will need to be recognized on the consolidated balance sheet for these branches, which will also have an impact on regulatory capital ratios. The recognition of operating leases on the consolidated balance sheet is expected to be the most significant impact of the adoption of this standards update. In June 2016, the FASB issued ASC Update 2016-13, "Financial Instruments - Credit Losses." The new impairment model prescribed by this standards update is a single impairment model for all financial assets (i.e., loans and investments). The recognition of credit losses would be based on an entity’s current estimate of expected losses (referred to as the Current Expected Credit Loss model, or "CECL"), as opposed to recognition of losses only when they are probable under current U.S. GAAP. ASC Update 2016-13 is effective for interim and annual reporting periods beginning after December 15, 2019. Early adoption is permitted. The Corporation intends to adopt this standards update effective with its March 31, 2020 quarterly report on Form 10-Q. The Corporation is currently evaluating the impact of the adoption of ASC Update 2016-13 on its consolidated financial statements. In August 2016, the FASB issued ASC Update 2016-15, "Statement of Cash Flows - Classification of Certain Cash Receipts and Cash Payments." This standards update provides guidance regarding the presentation of certain cash receipts and cash payments in the statement of cash flows, addressing eight specific cash flow classification issues, in order to reduce existing diversity in practice. ASC Update 2016-15 is effective for interim and annual reporting periods beginning after December 15, 2017. Early adoption is 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 2016-15 to have a material impact on its consolidated financial statements. In November 2016, the FASB issued ASC Update 2016-18, "Statement of Cash Flows - Restricted Cash." This standards update provides guidance regarding the presentation of restricted cash in the statement of cash flows. The update requires companies to include amounts generally described as restricted cash and restricted cash equivalents, along with cash and cash equivalents, when reconciling the beginning-of-period and end-of-period total amounts shown on the statement of cash flows. It also requires an entity to disclose the nature of the restrictions on cash and cash equivalents. ASC Update 2016-18 is effective for interim and annual reporting periods beginning after December 15, 2017. Early adoption is 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 2016-18 to have a material impact on its consolidated financial statements. In January 2017, the FASB issued ASC Update 2017-04, "Intangibles - Goodwill and Other." This standards update eliminates Step 2 of the goodwill impairment test which measures the impairment amount. Identifying and measuring impairment will take place in a single quantitative step. In addition, no separate qualitative assessment for reporting units with zero or negative carrying amount is required. Entities must disclose the existence of these reporting units and the amount of goodwill allocated to them. This update should be applied on a prospective basis, and an entity is required to disclose the nature of and reason for the change in accounting principle upon transition. ASC Update 2017-04 is effective for annual or interim goodwill impairment tests in reporting periods beginning after December 15, 2019. Early adoption is permitted. The Corporation intends to adopt this standards update effective with its 2020 goodwill impairment test and does not expect the adoption of ASC Update 2017-04 to have a material impact on its consolidated financial statements. In March 2017, the FASB issued ASC Update 2017-07, "Improving the Presentation of Net Periodic Pension Costs and Net Periodic Benefit Cost." This standards update requires a company to present service cost separately from the other components of net benefit cost. In addition, the update provides explicit guidance on how to present the service cost component and the other components of net benefit cost in the income statement and allow only the service cost component of net benefit cost to be eligible for capitalization. ASC Update 2017-07 is effective for annual or interim reporting periods beginning after December 15, 2017. Early adoption is 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 2017-07 to have a material impact on its consolidated financial statements. In March 2017, the FASB issued ASC Update 2017-08, "Premium Amortization on Purchased Callable Debt Securities." This standards update requires that a company amortize the premium on callable debt securities to the earliest call date versus current U.S. GAAP which requires amortization over the contractual life of the securities. The amortization period for callable debt securities purchased at a discount would not be impacted by the new accounting standards update. This amendment is to be adopted on a modified retrospective basis with a cumulative effect adjustment to retained earnings as of the beginning of the period of adoption. ASC Update 2017-08 is effective for annual or interim reporting periods beginning after December 15, 2018. Early adoption is permitted. The Corporation intends to adopt this standards update effective with its March 31, 2019 quarterly report on Form 10-Q and does not expect the adoption of ASC Update 2017-08 to have a material impact on its consolidated financial statements. In May 2017, the FASB issued ASC Update 2017-09, "Scope of Modification Accounting." This standards update provides clarity and reduces both (1) diversity in practice and (2) cost and complexity, when applying the guidance in the stock compensation standard, to a change to the terms or conditions of a share-based payment award. ASC Update 2017-09 is effective for annual or interim reporting periods beginning after December 15, 2017. Early adoption is 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 2017-09 to have a material impact on its consolidated financial statements. Reclassifications Certain amounts in the 2016 consolidated financial statements and notes have been reclassified to conform to the 2017 presentation.

Net Income Per Share (Tables)

Net Income Per Share (Tables)	9 Months Ended
Net Income Per Share (Tables)	Sep. 30, 2017
Earnings Per Share [Abstract]
Reconciliation of Weighted Average Common Shares Outstanding	A reconciliation of weighted average shares outstanding used to calculate basic net income per share and diluted net income per share follows: Three months ended September 30 Nine months ended September 30 2017 2016 2017 2016 (in thousands) Weighted average shares outstanding (basic) 174,991 173,020 174,582 173,248 Impact of common stock equivalents 1,225 1,044 1,194 1,017 Weighted average shares outstanding (diluted) 176,216 174,064 175,776 174,265

Accumulated Other Comprehensi22

Accumulated Other Comprehensive Income Accumulated Other Comprehensive Income (Tables)	9 Months Ended
	Sep. 30, 2017
Equity [Abstract]
Changes in other comprehensive income	The following table presents changes in other comprehensive income: Before-Tax Amount Tax Effect Net of Tax Amount (in thousands) Three months ended September 30, 2017 Unrealized gain on securities $ 5,109 $ (1,789 ) $ 3,320 Reclassification adjustment for securities gains included in net income (1) (4,597 ) 1,609 (2,988 ) Amortization of net unrecognized pension and postretirement items (3) 523 (183 ) 340 Total Other Comprehensive Income $ 1,035 $ (363 ) $ 672 Three months ended September 30, 2016 Unrealized loss on securities $ (5,505 ) $ 1,925 $ (3,580 ) Reclassification adjustment for securities gains included in net income (1) (2 ) 1 (1 ) Amortization of unrealized loss on derivative financial instruments (2) 6 (2 ) 4 Amortization of net unrecognized pension and postretirement items (3) 583 (204 ) 379 Total Other Comprehensive Loss $ (4,918 ) $ 1,720 $ (3,198 ) Nine months ended September 30, 2017 Unrealized gain on securities $ 27,482 $ (9,621 ) $ 17,861 Reclassification adjustment for securities gains included in net income (1) (7,139 ) 2,500 (4,639 ) Amortization of net unrecognized pension and postretirement items (3) 1,575 (551 ) 1,024 Total Other Comprehensive Income $ 21,918 $ (7,672 ) $ 14,246 Nine months ended September 30, 2016 Unrealized gain on securities $ 40,441 $ (14,156 ) $ 26,285 Reclassification adjustment for securities gains included in net income (1) (1,025 ) 359 (666 ) Amortization of unrealized loss on derivative financial instruments (2) 18 (6 ) 12 Amortization of net unrecognized pension and postretirement items (3) 1,349 (472 ) 877 Total Other Comprehensive Income $ 40,783 $ (14,275 ) $ 26,508 (1) Amounts reclassified out of accumulated other comprehensive income. Before-tax amounts included in "Investment securities gains, net" on the consolidated statements of income. See Note 4, "Investment Securities," for additional details. (2) Amounts reclassified out of accumulated other comprehensive income. Before-tax amounts included in "Interest expense" on the consolidated statements of income. (3) Amounts reclassified out of accumulated other comprehensive income. Before-tax amounts included in "Salaries and employee benefits" on the consolidated statements of income. See Note 8, "Employee Benefit Plans," for additional details.
Changes in each component of accumulated other comprehensive income	The following table presents changes in each component of accumulated other comprehensive income (loss), net of tax: Unrealized Gains (Losses) on Investment Securities Not Other-Than-Temporarily Impaired Unrealized Non-Credit Gains (Losses) on Other-Than-Temporarily Impaired Debt Securities Unrealized Effective Portions of Losses on Forward-Starting Interest Rate Swaps Unrecognized Pension and Postretirement Plan Income (Costs) Total (in thousands) Three months ended September 30, 2017 Balance at June 30, 2017 $ (10,157 ) $ 273 $ — $ (14,991 ) $ (24,875 ) Other comprehensive income before reclassifications 3,320 — — — 3,320 Amounts reclassified from accumulated other comprehensive income (loss) (2,988 ) — — 340 (2,648 ) Balance at September 30, 2017 $ (9,825 ) $ 273 $ — $ (14,651 ) $ (24,203 ) Three months ended September 30, 2016 Balance at June 30, 2016 $ 22,701 $ 458 $ (7 ) $ (15,463 ) $ 7,689 Other comprehensive loss before reclassifications (3,580 ) — — — (3,580 ) Amounts reclassified from accumulated other comprehensive income (loss) (1 ) — 4 379 382 Balance at September 30, 2016 $ 19,120 $ 458 $ (3 ) $ (15,084 ) $ 4,491 Nine months ended September 30, 2017 Balance at December 31, 2016 $ (23,047 ) $ 273 $ — $ (15,675 ) $ (38,449 ) Other comprehensive income before reclassifications 17,861 — — — 17,861 Amounts reclassified from accumulated other comprehensive income (loss) (4,639 ) — — 1,024 (3,615 ) Balance at September 30, 2017 $ (9,825 ) $ 273 $ — $ (14,651 ) $ (24,203 ) Nine months ended September 30, 2016 Balance at December 31, 2015 $ (6,499 ) $ 458 $ (15 ) $ (15,961 ) $ (22,017 ) Other comprehensive income before reclassifications 26,285 — — — 26,285 Amounts reclassified from accumulated other comprehensive income (loss) (666 ) — 12 877 223 Balance at September 30, 2016 $ 19,120 $ 458 $ (3 ) $ (15,084 ) $ 4,491

Investment Securities (Tables)

Investment Securities (Tables)	9 Months Ended
Investment Securities (Tables)	Sep. 30, 2017
Investments, Debt and Equity Securities [Abstract]
Schedule of Amortized Cost and Fair Values of Investment Securities	The following table presents the amortized cost and estimated fair values of investment securities, which were all classified as available for sale: Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Estimated Fair Value (in thousands) September 30, 2017 U.S. Government sponsored agency securities $ 5,961 $ 54 $ — $ 6,015 State and municipal securities 415,313 4,005 (5,405 ) 413,913 Corporate debt securities 92,355 2,578 (1,956 ) 92,977 Collateralized mortgage obligations 601,845 1,380 (9,547 ) 593,678 Residential mortgage-backed securities 1,184,797 5,850 (8,561 ) 1,182,086 Commercial mortgage-backed securities 161,960 299 (627 ) 161,632 Auction rate securities 107,410 — (9,254 ) 98,156 Total debt securities 2,569,641 14,166 (35,350 ) 2,548,457 Equity securities 6,560 6,499 — 13,059 Total $ 2,576,201 $ 20,665 $ (35,350 ) $ 2,561,516 Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Estimated Fair Value (in thousands) December 31, 2016 U.S. Government sponsored agency securities $ 132 $ 2 $ — $ 134 State and municipal securities 405,274 2,043 (15,676 ) 391,641 Corporate debt securities 112,016 1,978 (4,585 ) 109,409 Collateralized mortgage obligations 604,095 1,943 (12,178 ) 593,860 Residential mortgage-backed securities 1,328,192 6,546 (16,900 ) 1,317,838 Commercial mortgage-backed securities 25,100 — (537 ) 24,563 Auction rate securities 107,215 — (9,959 ) 97,256 Total debt securities 2,582,024 12,512 (59,835 ) 2,534,701 Equity securities 12,231 12,295 — 24,526 Total $ 2,594,255 $ 24,807 $ (59,835 ) $ 2,559,227
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 September 30, 2017 , by contractual maturity, are shown in the following table. Actual maturities may differ from contractual maturities as certain investment securities are subject to call or prepayment with or without call or prepayment penalties. Amortized Estimated (in thousands) Due in one year or less $ 23,940 $ 24,118 Due from one year to five years 30,708 31,196 Due from five years to ten years 114,114 115,336 Due after ten years 452,277 440,411 621,039 611,061 Residential mortgage-backed securities 1,184,797 1,182,086 Commercial mortgage-backed securities 161,960 161,632 Collateralized mortgage obligations 601,845 593,678 Total debt securities $ 2,569,641 $ 2,548,457
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 the gross realized gains and losses on the sales of equity and debt securities: Gross Gross Net Gains (Losses) Three months ended September 30, 2017 (in thousands) Equity securities $ 4,817 $ — $ 4,817 Debt securities 12 (232 ) (220 ) Total $ 4,829 $ (232 ) $ 4,597 Three months ended September 30, 2016 Equity securities $ 2 $ — $ 2 Debt securities — — — Total $ 2 $ — $ 2 Nine months ended September 30, 2017 Equity securities $ 7,167 $ — $ 7,167 Debt securities 218 (246 ) (28 ) Total $ 7,385 $ (246 ) $ 7,139 Nine months ended September 30, 2016 Equity securities $ 739 $ (10 ) $ 729 Debt securities 322 (26 ) 296 Total $ 1,061 $ (36 ) $ 1,025
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, at September 30, 2017 and December 31, 2016: Less than 12 months 12 months or longer Total Estimated Fair Value Unrealized Losses Estimated Fair Value Unrealized Losses Estimated Fair Value Unrealized Losses September 30, 2017 (in thousands) State and municipal securities $ 121,527 $ (1,930 ) $ 87,466 $ (3,475 ) $ 208,993 $ (5,405 ) Corporate debt securities 3,570 (16 ) 31,533 (1,940 ) 35,103 (1,956 ) Collateralized mortgage obligations 85,335 (837 ) 301,009 (8,710 ) 386,344 (9,547 ) Residential mortgage-backed securities 796,019 (8,359 ) 5,513 (202 ) 801,532 (8,561 ) Commercial mortgage-backed securities 87,260 (627 ) — — 87,260 (627 ) Auction rate securities — — 98,156 (9,254 ) 98,156 (9,254 ) Total debt securities $ 1,093,711 $ (11,769 ) $ 523,677 $ (23,581 ) $ 1,617,388 $ (35,350 ) Less than 12 months 12 months or longer Total Estimated Unrealized Estimated Unrealized Estimated Unrealized December 31, 2016 (in thousands) State and municipal securities $ 247,509 $ (15,676 ) $ — $ — $ 247,509 $ (15,676 ) Corporate debt securities 11,922 (110 ) 34,629 (4,475 ) 46,551 (4,585 ) Collateralized mortgage obligations 166,905 (3,899 ) 258,237 (8,279 ) 425,142 (12,178 ) Residential mortgage-backed securities 1,112,947 (16,900 ) — — 1,112,947 (16,900 ) Commercial mortgage-backed securities 24,563 (537 ) — — 24,563 (537 ) Auction rate securities — — 97,256 (9,959 ) 97,256 (9,959 ) Total debt securities $ 1,563,846 $ (37,122 ) $ 390,122 $ (22,713 ) $ 1,953,968 $ (59,835 )
Summary of Amortized Cost and Fair Values of Corporate Debt Securities	The following table presents the amortized cost and estimated fair value of corporate debt securities: September 30, 2017 December 31, 2016 Amortized cost Estimated fair value Amortized cost Estimated fair value (in thousands) Single-issuer trust preferred securities $ 39,186 $ 38,251 $ 43,746 $ 39,829 Subordinated debt 37,147 37,859 46,231 46,723 Senior debt 12,033 12,456 18,037 18,433 Pooled trust preferred securities — 422 — 422 Corporate debt securities issued by financial institutions 88,366 88,988 108,014 105,407 Other corporate debt securities 3,989 3,989 4,002 4,002 Available for sale corporate debt securities $ 92,355 $ 92,977 $ 112,016 $ 109,409

Loans and Allowance for Credi24

Loans and Allowance for Credit Losses (Tables)	9 Months Ended
Loans and Allowance for Credit Losses (Tables)	Sep. 30, 2017
Receivables [Abstract]
Summary of Gross Loans by Type	Loans, net of unearned income are summarized as follows: September 30, December 31, 2016 (in thousands) Real-estate - commercial mortgage $ 6,275,140 $ 6,018,582 Commercial - industrial, financial and agricultural 4,223,075 4,087,486 Real-estate - residential mortgage 1,887,907 1,601,994 Real-estate - home equity 1,567,473 1,625,115 Real-estate - construction 973,108 843,649 Consumer 302,448 291,470 Leasing and other 278,658 246,704 Overdrafts 3,400 3,662 Loans, gross of unearned income 15,511,209 14,718,662 Unearned income (24,310 ) (19,390 ) Loans, net of unearned income $ 15,486,899 $ 14,699,272
Schedule of Allowance for Credit Losses	The following table presents the components of the allowance for credit losses: September 30, December 31, (in thousands) Allowance for loan losses $ 172,245 $ 168,679 Reserve for unfunded lending commitments 2,504 2,646 Allowance for credit losses $ 174,749 $ 171,325
Activity in the Allowance for Credit Losses	The following table presents the activity in the allowance for credit losses: Three months ended September 30 Nine months ended September 30 2017 2016 2017 2016 (in thousands) Balance at beginning of period $ 174,998 $ 165,108 $ 171,325 $ 171,412 Loans charged off (7,795 ) (7,672 ) (25,917 ) (29,573 ) Recoveries of loans previously charged off 2,471 3,592 12,766 15,148 Net loans charged off (5,324 ) (4,080 ) (13,151 ) (14,425 ) Provision for credit losses 5,075 4,141 16,575 8,182 Balance at end of period $ 174,749 $ 165,169 $ 174,749 $ 165,169 The Corporation has historically maintained an unallocated allowance for credit losses 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. In 2017, enhancements were made to allow for the impact of these factors and conditions to be quantified in the allowance allocation process. Accordingly, an unallocated allowance for credit losses is no longer necessary. The following table presents the activity in the allowance for loan losses by portfolio segment: Real Estate - Commercial Mortgage Commercial - Industrial, Financial and Agricultural Real Estate - Home Equity Real Estate - Residential Mortgage Real Estate - Construction Consumer Leasing, other and overdrafts Unallocated Total (in thousands) Three months ended September 30, 2017 Balance at June 30, 2017 $ 57,372 $ 67,642 $ 17,456 $ 16,439 $ 9,534 $ 1,794 $ 2,105 $ — $ 172,342 Loans charged off (483 ) (2,714 ) (547 ) (195 ) (2,744 ) (373 ) (739 ) — (7,795 ) Recoveries of loans previously charged off 106 665 252 219 629 193 407 — 2,471 Net loans charged off (377 ) (2,049 ) (295 ) 24 (2,115 ) (180 ) (332 ) — (5,324 ) Provision for loan losses (1) (2,008 ) 5,392 1,297 220 (283 ) 383 226 — 5,227 Balance at Sept 30, 2017 $ 54,987 $ 70,985 $ 18,458 $ 16,683 $ 7,136 $ 1,997 $ 1,999 $ — $ 172,245 Three months ended September 30, 2016 Balance at June 30, 2016 $ 43,740 $ 51,755 $ 26,170 $ 21,226 $ 5,772 $ 2,984 $ 2,518 $ 8,381 $ 162,546 Loans charged off (1,350 ) (3,144 ) (709 ) (802 ) (150 ) (685 ) (832 ) — (7,672 ) Recoveries of loans previously charged off 296 1,539 241 228 898 222 168 — 3,592 Net loans charged off (1,054 ) (1,605 ) (468 ) (574 ) 748 (463 ) (664 ) — (4,080 ) Provision for loan losses (1) 3,171 (1,871 ) 1,419 1,452 23 852 1,075 (2,061 ) 4,060 Balance at September 30, 2016 $ 45,857 $ 48,279 $ 27,121 $ 22,104 $ 6,543 $ 3,373 $ 2,929 $ 6,320 $ 162,526 Nine months ended September 30, 2017 Balance at December 31, 2016 $ 46,842 $ 54,353 $ 26,801 $ 22,929 $ 6,455 $ 3,574 $ 3,192 $ 4,533 $ 168,679 Loans charged off (1,949 ) (13,594 ) (1,837 ) (535 ) (3,765 ) (1,659 ) (2,578 ) — (25,917 ) Recoveries of loans previously charged off 1,490 6,830 604 600 1,550 899 793 — 12,766 Net loans charged off (459 ) (6,764 ) (1,233 ) 65 (2,215 ) (760 ) (1,785 ) — (13,151 ) Provision for loan losses (1) 8,604 23,396 (7,110 ) (6,311 ) 2,896 (817 ) 592 (4,533 ) 16,717 Balance at September 30, 2017 $ 54,987 $ 70,985 $ 18,458 $ 16,683 $ 7,136 $ 1,997 $ 1,999 $ — $ 172,245 Nine months ended September 30, 2016 Balance at December 31, 2015 $ 47,866 $ 57,098 $ 22,405 $ 21,375 $ 6,529 $ 2,585 $ 2,468 $ 8,728 $ 169,054 Loans charged off (3,406 ) (13,957 ) (3,295 ) (2,210 ) (1,218 ) (2,261 ) (3,226 ) — (29,573 ) Recoveries of loans previously charged off 2,488 6,789 929 784 2,844 957 357 — 15,148 Net loans charged off (918 ) (7,168 ) (2,366 ) (1,426 ) 1,626 (1,304 ) (2,869 ) — (14,425 ) Provision for loan losses (1) (1,091 ) (1,651 ) 7,082 2,155 (1,612 ) 2,092 3,330 (2,408 ) 7,897 Balance at September 30, 2016 $ 45,857 $ 48,279 $ 27,121 $ 22,104 $ 6,543 $ 3,373 $ 2,929 $ 6,320 $ 162,526 (1) The provision for loan losses excluded decreases of $152,000 and $142,000 in the reserve for unfunded lending commitments for the three and nine months ended September 30, 2017 , respectively and increases of $81,000 and $ 285,000 in the reserve for unfunded lending commitments for the three and nine months ended September 30, 2016, respectively. The following table presents loans, net of unearned income and their related allowance for loan losses, by portfolio segment: Real Estate - Commercial Mortgage Commercial - Industrial, Financial and Agricultural Real Estate - Home Equity Real Estate - Residential Mortgage Real Estate - Construction Consumer Leasing, other and overdrafts Unallocated Total (in thousands) Allowance for loan losses at September 30, 2017: Measured for impairment under FASB ASC Subtopic 450-20 $ 47,261 $ 55,486 $ 7,632 $ 6,488 $ 5,702 $ 1,976 $ 1,999 $ — $ 126,544 Evaluated for impairment under FASB ASC Section 310-10-35 7,726 15,499 10,826 10,195 1,434 21 — N/A 45,701 $ 54,987 $ 70,985 $ 18,458 $ 16,683 $ 7,136 $ 1,997 $ 1,999 $ — $ 172,245 Loans, net of unearned income at September 30, 2017: Measured for impairment under FASB ASC Subtopic 450-20 $ 6,228,935 $ 4,162,857 $ 1,543,551 $ 1,845,329 $ 959,584 $ 302,415 $ 257,748 N/A $ 15,300,419 Evaluated for impairment under FASB ASC Section 310-10-35 46,205 60,218 23,922 42,578 13,524 33 — N/A 186,480 $ 6,275,140 $ 4,223,075 $ 1,567,473 $ 1,887,907 $ 973,108 $ 302,448 $ 257,748 N/A $ 15,486,899 Allowance for loan losses at September 30, 2016: Measured for impairment under FASB ASC Subtopic 450-20 $ 36,151 $ 38,858 $ 17,828 $ 10,410 $ 4,422 $ 3,346 $ 2,929 $ 6,320 $ 120,264 Evaluated for impairment under FASB ASC Section 310-10-35 9,706 9,421 9,293 11,694 2,121 27 — N/A 42,262 $ 45,857 $ 48,279 $ 27,121 $ 22,104 $ 6,543 $ 3,373 $ 2,929 $ 6,320 $ 162,526 Loans, net of unearned income at September 30, 2016: Measured for impairment under FASB ASC Subtopic 450-20 $ 5,763,863 $ 3,972,461 $ 1,621,731 $ 1,496,461 $ 850,315 $ 283,633 $ 219,780 N/A $ 14,208,244 Evaluated for impairment under FASB ASC Section 310-10-35 55,052 51,658 18,690 46,235 11,319 40 — N/A 182,994 $ 5,818,915 $ 4,024,119 $ 1,640,421 $ 1,542,696 $ 861,634 $ 283,673 $ 219,780 N/A $ 14,391,238 N/A - Not applicable
Total Impaired Loans by Class Segment	The following table presents total impaired loans by class segment: September 30, 2017 December 31, 2016 Unpaid Principal Balance Recorded Investment Related Allowance Unpaid Principal Balance Recorded Investment Related Allowance (in thousands) With no related allowance recorded: Real estate - commercial mortgage $ 24,722 $ 21,000 $ — $ 28,757 $ 25,447 $ — Commercial - secured 32,738 30,053 — 29,296 25,526 — Real estate - residential mortgage 4,603 4,603 — 4,689 4,689 — Construction - commercial residential 14,086 9,450 — 6,271 4,795 — 76,149 65,106 69,013 60,457 With a related allowance recorded: Real estate - commercial mortgage 32,770 25,205 7,726 37,132 29,446 10,162 Commercial - secured 33,481 29,189 14,974 27,767 22,626 13,198 Commercial - unsecured 1,236 976 525 1,122 823 455 Real estate - home equity 27,739 23,922 10,826 23,971 19,205 9,511 Real estate - residential mortgage 43,979 37,975 10,195 48,885 41,359 11,897 Construction - commercial residential 6,119 2,883 1,006 10,103 4,206 1,300 Construction - commercial 186 100 36 681 435 145 Construction - other 1,096 1,091 392 1,096 1,096 423 Consumer - direct 24 19 13 21 21 14 Consumer - indirect 14 14 8 19 19 12 146,644 121,374 45,701 150,797 119,236 47,117 Total $ 222,793 $ 186,480 $ 45,701 $ 219,810 $ 179,693 $ 47,117 As of September 30, 2017 and December 31, 2016 , there were $65.1 million and $60.5 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 they were previously 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: Three months ended September 30 Nine months ended September 30 2017 2016 2017 2016 Average Interest Average Interest Average Interest Average Interest (in thousands) With no related allowance recorded: Real estate - commercial mortgage $ 21,698 $ 72 $ 25,048 $ 78 $ 22,770 $ 213 $ 23,929 219 Commercial - secured 33,044 46 23,836 32 29,309 128 18,400 68 Real estate - residential mortgage 4,616 27 6,151 33 4,645 79 5,826 96 Construction - commercial residential 8,747 5 5,734 10 6,745 11 6,658 45 Construction - commercial 295 — — — 298 — — — 68,400 150 60,769 153 63,767 431 54,813 428 With a related allowance recorded: Real estate - commercial mortgage 25,910 86 29,139 91 27,518 259 32,310 303 Commercial - secured 24,334 33 21,688 29 23,291 96 26,665 100 Commercial - unsecured 818 1 953 1 806 1 903 3 Real estate - home equity 22,837 150 18,283 76 20,957 362 17,589 203 Real estate - residential mortgage 38,329 225 40,913 221 39,584 680 42,399 683 Construction - commercial residential 5,047 4 4,947 8 5,397 11 5,568 37 Construction - commercial 113 — 476 — 186 — 546 — Construction - other 1,091 — 756 — 1,094 — 579 — Consumer - direct 19 — 19 — 19 — 17 1 Consumer - indirect 15 — 11 — 17 — 14 — Leasing, other and overdrafts — — — — 356 — 712 — 118,513 499 117,185 426 119,225 1,409 127,302 1,330 Total $ 186,913 $ 649 $ 177,954 $ 579 $ 182,992 $ 1,840 $ 182,115 1,758 (1) All impaired loans, excluding accruing TDRs, were non-accrual loans. Interest income recognized for the three and nine months ended September 30, 2017 and 2016 represents amounts earned on accruing TDRs.
Financing Receivable Credit Quality Indicators	The following table presents internal credit risk ratings for the indicated loan class segments: Pass Special Mention Substandard or Lower Total September 30, 2017 December 31, 2016 September 30, 2017 December 31, 2016 September 30, 2017 December 31, 2016 September 30, 2017 December 31, 2016 (dollars in thousands) Real estate - commercial mortgage $ 6,028,523 $ 5,763,122 $ 118,947 $ 132,484 $ 127,670 $ 122,976 $ 6,275,140 $ 6,018,582 Commercial - secured 3,807,138 3,686,152 98,639 128,873 183,181 118,527 4,088,958 3,933,552 Commercial - unsecured 127,561 145,922 3,474 4,481 3,082 3,531 134,117 153,934 Total commercial - industrial, financial and agricultural 3,934,699 3,832,074 102,113 133,354 186,263 122,058 4,223,075 4,087,486 Construction - commercial residential 134,786 113,570 6,746 15,447 14,595 13,172 156,127 142,189 Construction - commercial 743,111 635,963 4,418 3,412 3,869 5,115 751,398 644,490 Total construction (excluding Construction - other) 877,897 749,533 11,164 18,859 18,464 18,287 907,525 786,679 $ 10,841,119 $ 10,344,729 $ 232,224 $ 284,697 $ 332,397 $ 263,321 $ 11,405,740 $ 10,892,747 % of Total 95.1 % 95.0 % 2.0 % 2.6 % 2.9 % 2.4 % 100.0 % 100.0 % The following table presents a summary of performing, delinquent and non-performing loans for the indicated loan class segments: Performing Delinquent (1) Non-performing (2) Total September 30, 2017 December 31, 2016 September 30, 2017 December 31, 2016 September 30, 2017 December 31, 2016 September 30, 2017 December 31, 2016 (dollars in thousands) Real estate - home equity $ 1,542,289 $ 1,602,687 $ 12,955 $ 9,274 $ 12,229 $ 13,154 $ 1,567,473 $ 1,625,115 Real estate - residential mortgage 1,845,495 1,557,995 20,769 20,344 21,643 23,655 1,887,907 1,601,994 Construction - other 64,110 55,874 382 — 1,091 1,096 65,583 56,970 Consumer - direct 55,490 93,572 158 1,752 63 1,563 55,711 96,887 Consumer - indirect 243,723 190,656 2,834 3,599 180 328 246,737 194,583 Total consumer 299,213 284,228 2,992 5,351 243 1,891 302,448 291,470 Leasing 256,784 229,591 884 1,068 80 317 257,748 230,976 $ 4,007,891 $ 3,730,375 $ 37,982 $ 36,037 $ 35,286 $ 40,113 $ 4,081,159 $ 3,806,525 % of Total 98.2 % 98.0 % 0.9 % 0.9 % 0.9 % 1.1 % 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 non-performing assets: September 30, December 31, (in thousands) Non-accrual loans $ 123,345 $ 120,133 Loans 90 days or more past due and still accruing 13,124 11,505 Total non-performing loans 136,469 131,638 Other real estate owned (OREO) 10,542 12,815 Total non-performing assets $ 147,011 $ 144,453
Past due Loan Status and Non-Accrual Loans by Portfolio Segment	The following tables present past due status and non-accrual loans by portfolio segment and class segment: September 30, 2017 30-59 Days Past Due 60-89 Days Past Due ≥ 90 Days Past Due and Accruing Non- accrual Total ≥ 90 Days Total Past Due Current Total (in thousands) Real estate - commercial mortgage $ 10,276 $ 2,297 $ 2,884 $ 31,766 $ 34,650 $ 47,223 $ 6,227,917 $ 6,275,140 Commercial - secured 8,382 2,378 1,503 51,787 53,290 64,050 4,024,908 4,088,958 Commercial - unsecured 114 34 — 919 919 1,067 133,050 134,117 Total commercial - industrial, financial and agricultural 8,496 2,412 1,503 52,706 54,209 65,117 4,157,958 4,223,075 Real estate - home equity 11,192 1,763 3,096 9,133 12,229 25,184 1,542,289 1,567,473 Real estate - residential mortgage 15,106 5,663 5,258 16,385 21,643 42,412 1,845,495 1,887,907 Construction - commercial residential 400 18 60 12,164 12,224 12,642 143,485 156,127 Construction - commercial 366 — — 100 100 466 750,932 751,398 Construction - other 382 — — 1,091 1,091 1,473 64,110 65,583 Total real estate - construction 1,148 18 60 13,355 13,415 14,581 958,527 973,108 Consumer - direct 118 40 63 — 63 221 55,490 55,711 Consumer - indirect 2,393 441 180 — 180 3,014 243,723 246,737 Total consumer 2,511 481 243 — 243 3,235 299,213 302,448 Leasing, other and overdrafts 764 120 80 — 80 964 256,784 257,748 Total $ 49,493 $ 12,754 $ 13,124 $ 123,345 $ 136,469 $ 198,716 $ 15,288,183 $ 15,486,899 December 31, 2016 30-59 Days Past Due 60-89 Days Past Due ≥ 90 Days Past Due and Accruing Non- accrual Total ≥ 90 Days Total Past Due Current Total (in thousands) Real estate - commercial mortgage $ 6,254 $ 1,622 $ 383 $ 38,936 $ 39,319 $ 47,195 $ 5,971,387 $ 6,018,582 Commercial - secured 6,660 2,616 959 41,589 42,548 51,824 3,881,728 3,933,552 Commercial - unsecured 898 35 152 760 912 1,845 152,089 153,934 Total commercial - industrial, financial and agricultural 7,558 2,651 1,111 42,349 43,460 53,669 4,033,817 4,087,486 Real estate - home equity 6,596 2,678 2,543 10,611 13,154 22,428 1,602,687 1,625,115 Real estate - residential mortgage 15,600 4,744 5,224 18,431 23,655 43,999 1,557,995 1,601,994 Construction - commercial residential 233 51 36 8,275 8,311 8,595 133,594 142,189 Construction - commercial 743 — — 435 435 1,178 643,312 644,490 Construction - other — — — 1,096 1,096 1,096 55,874 56,970 Total real estate - construction 976 51 36 9,806 9,842 10,869 832,780 843,649 Consumer - direct 1,211 541 1,563 — 1,563 3,315 93,572 96,887 Consumer - indirect 3,200 399 328 — 328 3,927 190,656 194,583 Total consumer 4,411 940 1,891 — 1,891 7,242 284,228 291,470 Leasing, other and overdrafts 543 525 317 — 317 1,385 229,591 230,976 Total $ 41,938 $ 13,211 $ 11,505 $ 120,133 $ 131,638 $ 186,787 $ 14,512,485 $ 14,699,272
Troubled Debt Restructurings on Financing Receivables	The following table presents TDRs, by class segment: September 30, December 31, (in thousands) Real-estate - residential mortgage $ 26,193 $ 27,617 Real-estate - commercial mortgage 14,439 15,957 Real estate - home equity 14,789 8,594 Commercial 7,512 6,627 Construction 169 726 Consumer 33 39 Total accruing TDRs 63,135 59,560 Non-accrual TDRs (1) 28,742 27,850 Total TDRs $ 91,877 $ 87,410 (1) Included in non-accrual loans in the preceding table detailing non-performing assets
Loan Terms Modified Under Troubled Debt Restructurings	The following table presents TDRs, by class segment and type of concession for loans that were modified during the three and nine months ended September 30, 2017 and 2016 : Three months ended September 30 Nine months ended September 30 2017 2016 2017 2016 Number of Loans Post-Modification Recorded Investment Number of Loans Post-Modification Recorded Investment Number of Loans Post-Modification Recorded Investment Number of Loans Post-Modification Recorded Investment (dollars in thousands) Real estate – residential mortgage: Extend maturity with rate concession 2 $ 468 — $ — 2 $ 468 — $ — Extend maturity without rate concession 2 151 — — 4 488 2 $ 315 Bankruptcy — — 2 350 2 335 3 723 Real estate - commercial mortgage: Extend maturity without rate concession 2 1,247 — — 6 2,228 — $ — Bankruptcy — — — — 1 12 — $ — Real estate - home equity: Extend maturity without rate concession 14 1,315 24 1,063 47 3,874 63 $ 3,058 Bankruptcy 6 127 11 563 23 1,643 33 $ 2,279 Commercial: Extend maturity without rate concession 1 160 4 1,826 9 5,853 10 3,802 Bankruptcy — — — — 1 490 — — Commercial – unsecured: Extend maturity without rate concession — — — — 1 33 2 103 Construction - commercial residential: Extend maturity without rate concession — — — — 1 1,204 — — Consumer - direct: Bankruptcy — — — — — — 1 2 Consumer - indirect: Bankruptcy — — 1 21 — — 1 21 Total 27 $ 3,468 42 $ 3,823 97 $ 16,628 115 $ 10,303 The following table presents TDRs, by class segment, as of September 30, 2017 and 2016 , that were modified in the previous 12 months and had a post-modification payment default during the nine months ended September 30, 2017 and 2016 . The Corporation defines a payment default as a single missed payment. 2017 2016 Number of Loans Recorded Investment Number of Loans Recorded Investment (dollars in thousands) Real estate - residential mortgage 5 $ 1,321 7 $ 1,395 Real estate - commercial mortgage 3 653 2 129 Real estate - home equity 27 1,598 29 1,902 Commercial 2 264 6 2,593 Commercial - unsecured — — 1 26 Construction - commercial residential 1 1,198 — — Construction - other 1 411 — — Total 39 $ 5,445 45 $ 6,045

Mortgage Servicing Rights (Tabl

Mortgage Servicing Rights (Tables)	9 Months Ended
Mortgage Servicing Rights (Tables)	Sep. 30, 2017
Transfers and Servicing [Abstract]
Summary of Changes in Mortgage Servicing Rights	The following table summarizes the changes in mortgage servicing rights ("MSRs"), which are included in other assets on the consolidated balance sheets: Three months ended September 30 Nine months ended September 30 2017 2016 2017 2016 (in thousands) Amortized cost: Balance at beginning of period $ 38,180 $ 39,874 $ 38,822 $ 40,944 Originations of mortgage servicing rights 1,333 1,499 3,719 3,927 Amortization (1,639 ) (2,064 ) (4,667 ) (5,562 ) Balance at end of period $ 37,874 $ 39,309 $ 37,874 $ 39,309 Valuation allowance: Balance at beginning of period $ — $ (1,721 ) $ (1,291 ) $ — (Additions) reductions to valuation allowance — (1,280 ) 1,291 (3,001 ) Balance at end of period $ — $ (3,001 ) $ — $ (3,001 ) Net MSRs at end of period $ 37,874 $ 36,308 $ 37,874 $ 36,308

Stock-Based Compensation (Table

Stock-Based Compensation (Tables)	9 Months Ended
Stock-Based Compensation (Tables)	Sep. 30, 2017
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Summary of Compensation Expense and Related Tax Benefits	The following table presents compensation expense and the related tax benefits for equity awards recognized in the consolidated statements of income: Three months ended September 30 Nine months ended September 30 2017 2016 2017 2016 (in thousands) Stock-based compensation expense $ 1,570 $ 1,552 $ 3,339 $ 4,808 Tax benefit (628 ) (536 ) (3,312 ) (1,611 ) Stock-based compensation expense, net of tax benefit $ 942 $ 1,016 $ 27 $ 3,197

Employee Benefit Plans (Tables)

Employee Benefit Plans (Tables)	9 Months Ended
Employee Benefit Plans (Tables)	Sep. 30, 2017
Retirement Benefits [Abstract]
Schedule of Defined Benefit Plans Disclosures	The net periodic benefit of the Corporation’s Postretirement Benefits Plan ("Postretirement Plan") consisted of the following components: Three months ended September 30 Nine months ended September 30 2017 2016 2017 2016 (in thousands) Interest cost $ 17 $ 21 $ 51 $ 64 Expected return on plan assets — — — (1 ) Net accretion and deferral (141 ) (138 ) (423 ) (413 ) Net periodic benefit $ (124 ) $ (117 ) $ (372 ) $ (350 ) The net periodic benefit cost for the Corporation’s Defined Benefit Pension Plan ("Pension Plan") consisted of the following components: Three months ended September 30 Nine months ended September 30 2017 2016 2017 2016 (in thousands) Service cost (1) $ — $ 172 $ — $ 516 Interest cost 830 880 2,490 2,640 Expected return on plan assets (451 ) (580 ) (1,353 ) (1,739 ) Net amortization and deferral 663 605 1,989 1,815 Net periodic benefit cost $ 1,042 $ 1,077 $ 3,126 $ 3,232 (1) The Pension Plan was curtailed effective January 1, 2008. Service cost was related to administrative costs associated with the plan and was not due to the accrual of additional participant benefits.

Derivative Financial Instrume28

Derivative Financial Instruments (Tables)	9 Months Ended
Derivative Financial Instruments (Tables)	Sep. 30, 2017
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Summary of Notional Amounts and Fair Values of Derivative Financial Instruments	The following table presents a summary of the notional amounts and fair values of derivative financial instruments: September 30, 2017 December 31, 2016 Notional Asset Notional Asset (in thousands) Interest Rate Locks with Customers Positive fair values $ 141,250 $ 1,283 $ 87,119 $ 863 Negative fair values 5,530 (16 ) 18,239 (227 ) Net interest rate locks with customers 1,267 636 Forward Commitments Positive fair values 27,562 48 70,031 2,223 Negative fair values 77,000 (207 ) 19,964 (112 ) Net forward commitments (159 ) 2,111 Interest Rate Swaps with Customers Positive fair values 1,329,394 34,028 876,744 24,397 Negative fair values 578,120 (13,682 ) 583,060 (16,998 ) Net interest rate swaps with customers 20,346 7,399 Interest Rate Swaps with Dealer Counterparties Positive fair values 578,120 13,682 583,060 16,998 Negative fair values (1) 1,329,394 (27,663 ) 876,744 (24,397 ) Net interest rate swaps with dealer counterparties (13,981 ) (7,399 ) Foreign Exchange Contracts with Customers Positive fair values 5,912 332 11,674 504 Negative fair values 5,473 (226 ) 4,659 (221 ) Net foreign exchange contracts with customers 106 283 Foreign Exchange Contracts with Correspondent Banks Positive fair values 8,978 293 7,040 241 Negative fair values 4,420 (280 ) 12,869 (447 ) Net foreign exchange contracts with correspondent banks 13 (206 ) Net derivative fair value asset $ 7,592 $ 2,824 (1) Includes centrally cleared interest rate swaps with a notional amount of $324.3 million and a fair value of $0 as of September 30, 2017 . Collateral is posted daily through a clearing agent for changes in the fair value.
Summary of Fair Value Gains and Losses on Derivative Financial Instruments	The following table presents a summary of the fair value gains (losses) on derivative financial instruments: Three months ended September 30 Nine months ended September 30 2017 2016 2017 2016 (in thousands) Interest rate locks with customers $ (59 ) $ 178 $ 631 $ 1,922 Forward commitments (48 ) 970 (2,270 ) (1,042 ) Interest rate swaps with customers (47 ) (1,948 ) 12,947 48,052 Interest rate swaps with dealer counterparties 1,248 1,948 (6,582 ) (48,052 ) Foreign exchange contracts with customers 140 47 (177 ) 502 Foreign exchange contracts with correspondent banks (111 ) (266 ) 219 (613 ) Net fair value gains on derivative financial instruments $ 1,123 $ 929 $ 4,768 $ 769
Summary of Corporation's Mortgage Loans Held for Sale	The following table presents a summary of the Corporation’s mortgage loans held for sale: September 30, December 31, (in thousands) Cost $ 22,615 $ 28,708 Fair value 23,049 28,697
Summary of Offsetting Derivative Assets	The following table presents the Corporation's financial instruments that are eligible for offset, and the effects of offsetting, on the consolidated balance sheets: 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) September 30, 2017 Interest rate swap derivative assets $ 47,710 $ (14,163 ) $ — $ 33,547 Foreign exchange derivative assets with correspondent banks 293 (280 ) — 13 Total $ 48,003 $ (14,443 ) $ — $ 33,560 Interest rate swap derivative liabilities $ 41,345 $ (14,163 ) $ (15,520 ) $ 11,662 Foreign exchange derivative liabilities with correspondent banks 280 (280 ) — — Total $ 41,625 $ (14,443 ) $ (15,520 ) $ 11,662 December 31, 2016 Interest rate swap derivative assets $ 41,395 $ (15,117 ) $ — $ 26,278 Foreign exchange derivative assets with correspondent banks 241 (241 ) — — Total $ 41,636 $ (15,358 ) $ — $ 26,278 Interest rate swap derivative liabilities $ 41,395 $ (15,117 ) $ (4,010 ) $ 22,268 Foreign exchange derivative liabilities with correspondent banks 447 (241 ) (206 ) — Total $ 41,842 $ (15,358 ) $ (4,216 ) $ 22,268 (1) For derivative assets, amounts represent any derivative liability fair values that could be offset in the event of counterparty or customer default. For derivative liabilities, amounts represent any derivative asset fair values that could be offset in the event of counterparty or customer default. (2) Amounts represent collateral received from the counterparty or (posted by the Corporation).
Summary of Offsetting Derivative Liabilities	The following table presents the Corporation's financial instruments that are eligible for offset, and the effects of offsetting, on the consolidated balance sheets: 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) September 30, 2017 Interest rate swap derivative assets $ 47,710 $ (14,163 ) $ — $ 33,547 Foreign exchange derivative assets with correspondent banks 293 (280 ) — 13 Total $ 48,003 $ (14,443 ) $ — $ 33,560 Interest rate swap derivative liabilities $ 41,345 $ (14,163 ) $ (15,520 ) $ 11,662 Foreign exchange derivative liabilities with correspondent banks 280 (280 ) — — Total $ 41,625 $ (14,443 ) $ (15,520 ) $ 11,662 December 31, 2016 Interest rate swap derivative assets $ 41,395 $ (15,117 ) $ — $ 26,278 Foreign exchange derivative assets with correspondent banks 241 (241 ) — — Total $ 41,636 $ (15,358 ) $ — $ 26,278 Interest rate swap derivative liabilities $ 41,395 $ (15,117 ) $ (4,010 ) $ 22,268 Foreign exchange derivative liabilities with correspondent banks 447 (241 ) (206 ) — Total $ 41,842 $ (15,358 ) $ (4,216 ) $ 22,268 (1) For derivative assets, amounts represent any derivative liability fair values that could be offset in the event of counterparty or customer default. For derivative liabilities, amounts represent any derivative asset fair values that could be offset in the event of counterparty or customer default. (2) Amounts represent collateral received from the counterparty or (posted by the Corporation).

Commitments and Contingencies (

Commitments and Contingencies (Tables)	9 Months Ended
Commitments and Contingencies (Tables)	Sep. 30, 2017
Commitments and Contingencies Disclosure [Abstract]
Summary of Outstanding Commitments to Extend Credit and Letters of Credit	The outstanding amounts of commitments to extend credit and letters of credit were as follows: September 30, December 31, 2016 (in thousands) Commitments to extend credit $ 6,418,318 $ 6,075,567 Standby letters of credit 331,096 356,359 Commercial letters of credit 41,819 38,901

Fair Value Measurements (Tables

Fair Value Measurements (Tables)	9 Months Ended
Fair Value Measurements (Tables)	Sep. 30, 2017
Fair Value Disclosures [Abstract]
Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis	The following tables present summaries of the Corporation’s assets and liabilities measured at fair value on a recurring basis and reported on the consolidated balance sheets: September 30, 2017 Level 1 Level 2 Level 3 Total (in thousands) Mortgage loans held for sale $ — $ 23,049 $ — $ 23,049 Available for sale investment securities: Equity securities 13,059 — — 13,059 U.S. Government sponsored agency securities — 6,015 — 6,015 State and municipal securities — 413,913 — 413,913 Corporate debt securities — 89,755 3,222 92,977 Collateralized mortgage obligations — 593,678 — 593,678 Residential mortgage-backed securities — 1,182,086 — 1,182,086 Commercial mortgage-backed securities — 161,632 — 161,632 Auction rate securities — — 98,156 98,156 Total available for sale investment securities 13,059 2,447,079 101,378 2,561,516 Other assets 18,742 49,041 — 67,783 Total assets $ 31,801 $ 2,519,169 $ 101,378 $ 2,652,348 Other liabilities $ 18,607 $ 41,569 $ — $ 60,176 December 31, 2016 Level 1 Level 2 Level 3 Total (in thousands) Mortgage loans held for sale $ — $ 28,697 $ — $ 28,697 Available for sale investment securities: Equity securities 24,526 — — 24,526 U.S. Government sponsored agency securities — 134 — 134 State and municipal securities — 391,641 — 391,641 Corporate debt securities — 106,537 2,872 109,409 Collateralized mortgage obligations — 593,860 — 593,860 Residential mortgage-backed securities — 1,317,838 — 1,317,838 Commercial mortgage-backed securities — 24,563 — 24,563 Auction rate securities — — 97,256 97,256 Total available for sale investment securities 24,526 2,434,573 100,128 2,559,227 Other assets 17,111 44,481 — 61,592 Total assets $ 41,637 $ 2,507,751 $ 100,128 $ 2,649,516 Other liabilities $ 17,032 $ 41,734 $ — $ 58,766
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 the Corporation’s available for sale investment securities measured at fair value on a recurring basis using unobservable inputs (Level 3): Three months ended September 30, 2017 Pooled Trust Single-issuer ARCs (in thousands) Balance at June 30, 2017 $ 422 $ 2,775 $ 97,923 Unrealized adjustment to fair value (1) — (28 ) 233 Discount accretion (2) — 3 — Balance at September 30, 2017 $ 422 $ 2,750 $ 98,156 Three months ended September 30, 2016 Balance at June 30, 2016 $ 706 $ 2,425 $ 97,886 Unrealized adjustment to fair value (1) — 7 (318 ) Discount accretion (2) — 3 158 Balance at September 30, 2016 $ 706 $ 2,435 $ 97,726 Nine months ended September 30, 2017 Pooled Trust Single-issuer ARCs (in thousands) Balance at December 31, 2016 $ 422 $ 2,450 $ 97,256 Unrealized adjustment to fair value (1) — 291 705 Discount accretion (2) — 9 195 Balance at September 30, 2017 $ 422 $ 2,750 $ 98,156 Nine months ended September 30, 2016 Balance at December 31, 2015 $ 706 $ 2,630 $ 98,059 Unrealized adjustment to fair value (1) — (204 ) (668 ) Discount accretion (2) — 9 335 Balance at September 30, 2016 $ 706 $ 2,435 $ 97,726 (1) 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. (2) 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 Level 3 financial assets measured at fair value on a nonrecurring basis and reported on the Corporation’s consolidated balance sheets: September 30, 2017 December 31, 2016 (in thousands) Net loans $ 140,779 $ 132,576 OREO 10,542 12,815 MSRs 37,874 37,532 Total assets $ 189,195 $ 182,923
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 estimated fair values of the Corporation’s financial instruments as of September 30, 2017 and December 31, 2016 . In addition, a general description of the methods and assumptions used to estimate such fair values is also provided. September 30, 2017 December 31, 2016 Book Value Estimated Book Value Estimated (in thousands) FINANCIAL ASSETS Cash and due from banks $ 99,803 $ 99,803 $ 118,763 $ 118,763 Interest-bearing deposits with other banks 582,845 582,845 233,763 233,763 Federal Reserve Bank and Federal Home Loan Bank stock 62,951 62,951 57,489 57,489 Loans held for sale (1) 23,049 23,049 28,697 28,697 Available for sale investment securities (1) 2,561,516 2,561,516 2,559,227 2,559,227 Net Loans (1) 15,314,654 15,086,654 14,530,593 14,387,454 Accrued interest receivable 50,082 50,082 46,294 46,294 Other financial assets (1) 219,434 219,434 206,132 206,132 FINANCIAL LIABILITIES Demand and savings deposits $ 13,274,319 $ 13,274,319 $ 12,259,622 $ 12,259,622 Brokered Deposits 109,936 109,936 — — Time deposits 2,757,525 2,759,913 2,753,242 2,769,757 Short-term borrowings 298,751 298,751 541,317 541,317 Accrued interest payable 10,568 10,568 9,632 9,632 Other financial liabilities (1) 234,160 234,160 216,080 216,080 Federal Home Loan Bank advances and other long-term debt 1,038,159 1,035,053 929,403 928,167 (1) These financial instruments, or certain financial instruments in 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.

Net Income Per Share Reconcilia

Net Income Per Share Reconciliation of Weighted Average Common Shares Outstanding (Details) - shares shares in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Weighted Average Number of Shares Outstanding Reconciliation [Abstract]
Weighted average shares outstanding (basic) (in shares)	174,991	173,020	174,582	173,248
Impact of common stock equivalents (in shares)	1,225	1,044	1,194	1,017
Weighted average shares outstanding (diluted) (in shares)	176,216	174,064	175,776	174,265

Net Income Per Share Narrative

Net Income Per Share Narrative (Details) - shares	3 Months Ended		9 Months Ended
Net Income Per Share Narrative (Details) - shares	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Stock Option [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Stock options excluded from the diluted net income per share computation (in shares)	0	447,000	0	712,000

Accumulated Other Comprehensi33

Accumulated Other Comprehensive Income Changes in Other Comprehensive Income (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Equity [Abstract]
Unrealized gain on securities, before tax amount	$ 5,109	$ (5,505)	$ 27,482	$ 40,441
Unrealized gain on securities, tax effect	(1,789)	1,925	(9,621)	(14,156)
Unrealized gain on securities, net of tax amount	3,320	(3,580)	17,861	26,285
Reclassification adjustment for securities gains included in net income, before tax amount	(4,597)	(2)	(7,139)	(1,025)
Reclassification adjustment for securities gains included in net income, tax effect	1,609	1	2,500	359
Reclassification adjustment for securities gains included in net income, net of tax amount	(2,988)	(1)	(4,639)	(666)
Amortization of unrealized loss on derivative financial instruments, before tax amount		6		18
Amortization of unrealized loss on derivative financial instruments, tax effect		(2)		(6)
Amortization of unrealized loss on derivative financial instruments, net of tax amount	0	4	0	12
Amortization of net unrecognized pension and postretirement items, before tax amount	523	583	1,575	1,349
Amortization of net unrecognized pension and postretirement items, tax effect	(183)	(204)	(551)	(472)
Amortization of net unrecognized pension and postretirement items, net of tax amount	340	379	1,024	877
Total Other Comprehensive Income, Before Tax Amount	1,035	(4,918)	21,918	40,783
Total Other Comprehensive Income, Tax Effect	(363)	1,720	(7,672)	(14,275)
Other Comprehensive Income (Loss)	$ 672	$ (3,198)	$ 14,246	$ 26,508

Accumulated Other Comprehensi34

Accumulated Other Comprehensive Income Components of Other Comprehensive Income (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Accumulated Other Comprehensive Income [Roll Forward]
Beginning Balance	$ (24,875)	$ 7,689	$ (38,449)	$ (22,017)
Other comprehensive income before reclassifications	3,320	(3,580)	17,861	26,285
Amounts reclassified from accumulated other comprehensive income (loss)	(2,648)	382	(3,615)	223
Ending Balance	(24,203)	4,491	(24,203)	4,491
Unrealized Gains (Losses) on Investment Securities Not Other-Than-Temporarily Impaired
Accumulated Other Comprehensive Income [Roll Forward]
Beginning Balance	(10,157)	22,701	(23,047)	(6,499)
Other comprehensive income before reclassifications	3,320	(3,580)	17,861	26,285
Amounts reclassified from accumulated other comprehensive income (loss)	(2,988)	(1)	(4,639)	(666)
Ending Balance	(9,825)	19,120	(9,825)	19,120
Unrealized Non-Credit Gains (Losses) on Other-Than-Temporarily Impaired Debt Securities
Accumulated Other Comprehensive Income [Roll Forward]
Beginning Balance	273	458	273	458
Other comprehensive income before reclassifications	0	0	0	0
Amounts reclassified from accumulated other comprehensive income (loss)	0	0	0	0
Ending Balance	273	458	273	458
Unrealized Effective Portions of Losses on Forward-Starting Interest Rate Swaps
Accumulated Other Comprehensive Income [Roll Forward]
Beginning Balance	0	(7)	0	(15)
Other comprehensive income before reclassifications	0	0	0	0
Amounts reclassified from accumulated other comprehensive income (loss)	0	4	0	12
Ending Balance	0	(3)	0	(3)
Unrecognized Pension and Postretirement Plan Income (Costs)
Accumulated Other Comprehensive Income [Roll Forward]
Beginning Balance	(14,991)	(15,463)	(15,675)	(15,961)
Other comprehensive income before reclassifications	0	0	0	0
Amounts reclassified from accumulated other comprehensive income (loss)	340	379	1,024	877
Ending Balance	$ (14,651)	$ (15,084)	$ (14,651)	$ (15,084)

Investment Securities Schedule

Investment Securities Schedule of Amortized Cost and Fair Values of Investment Securities (Details) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016	Sep. 30, 2016
Schedule of Investments [Line Items]
Securities pledged as collateral	$ 1,900,000	$ 1,800,000
Amortized Cost	2,576,201	2,594,255
Gross Unrealized Gains	20,665	24,807
Gross Unrealized Losses	(35,350)	(59,835)
Estimated Fair Value	2,561,516	2,559,227
Other Equity Securities [Member]
Schedule of Investments [Line Items]
Available-for-sale Securities, Equity Securities	1,000	1,000
U.S. Government-Sponsored Agency Securities [Member]
Schedule of Investments [Line Items]
Amortized Cost	5,961	132
Gross Unrealized Gains	54	2
Gross Unrealized Losses	0	0
Estimated Fair Value	6,015	134
State and Municipal Securities [Member]
Schedule of Investments [Line Items]
Amortized Cost	415,313	405,274
Gross Unrealized Gains	4,005	2,043
Gross Unrealized Losses	(5,405)	(15,676)
Estimated Fair Value	413,913	391,641
Corporate Debt Securities [Member]
Schedule of Investments [Line Items]
Amortized Cost	92,355	112,016
Gross Unrealized Gains	2,578	1,978
Gross Unrealized Losses	(1,956)	(4,585)
Estimated Fair Value	92,977	109,409
Collateralized Mortgage Obligations [Member]
Schedule of Investments [Line Items]
Amortized Cost	601,845	604,095
Gross Unrealized Gains	1,380	1,943
Gross Unrealized Losses	(9,547)	(12,178)
Estimated Fair Value	593,678	593,860
Mortgage-Backed Securities [Member]
Schedule of Investments [Line Items]
Amortized Cost	1,184,797	1,328,192
Gross Unrealized Gains	5,850	6,546
Gross Unrealized Losses	(8,561)	(16,900)
Estimated Fair Value	1,182,086	1,317,838
Commercial Mortgage Backed Securities [Member]
Schedule of Investments [Line Items]
Amortized Cost	161,960	25,100
Gross Unrealized Gains	299	0
Gross Unrealized Losses	(627)	(537)
Estimated Fair Value	161,632	24,563
Auction Rate Securities [Member]
Schedule of Investments [Line Items]
Amortized Cost	107,410	107,215
Gross Unrealized Gains	0	0
Gross Unrealized Losses	(9,254)	(9,959)
Estimated Fair Value	98,156	97,256
Debt Securities [Member]
Schedule of Investments [Line Items]
Amortized Cost	2,569,641	2,582,024
Gross Unrealized Gains	14,166	12,512
Gross Unrealized Losses	(35,350)	(59,835)
Estimated Fair Value	2,548,457	2,534,701
Equity Securities [Member]
Schedule of Investments [Line Items]
Amortized Cost	6,560	12,231
Gross Unrealized Gains	6,499	12,295
Gross Unrealized Losses	0	0
Estimated Fair Value	13,059	$ 24,526
Pooled Trust Preferred Securities [Member]
Schedule of Investments [Line Items]
Other than Temporary Impairment, Credit Losses Recognized in Earnings, Credit Losses on Debt Securities Held	$ 10,000		$ 10,000

Investment Securities Schedul36

Investment Securities Schedule of Amortized Cost and Fair Values of Debt Securities by Contractual Maturities (Details) $ in Thousands	Sep. 30, 2017USD ($)
Amortized Cost
Due in one year or less	$ 23,940
Due from one year to five years	30,708
Due from five years to ten years	114,114
Due after ten years	452,277
Amortized cost, before securities without debt maturities	621,039
Amortized Cost	2,569,641
Estimated Fair Value
Due in one year or less	24,118
Due from one year to five years	31,196
Due from five years to ten years	115,336
Due after ten years	440,411
Available for sale securities, debt maturities, before securities without single maturities	611,061
Estimated Fair Value	2,548,457
Collateralized Mortgage Obligations [Member]
Amortized Cost
Available-for-sale securities, amortized cost without single maturity date	601,845
Estimated Fair Value
Available-for-sale securities, debt maturities, without single maturity date, fair value	593,678
Commercial Mortgage Backed Securities [Member]
Amortized Cost
Available-for-sale securities, amortized cost without single maturity date	161,960
Estimated Fair Value
Available-for-sale securities, debt maturities, without single maturity date, fair value	161,632
Mortgage-Backed Securities [Member]
Amortized Cost
Available-for-sale securities, amortized cost without single maturity date	1,184,797
Estimated Fair Value
Available-for-sale securities, debt maturities, without single maturity date, fair value	$ 1,182,086

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	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Gain (Loss) on Investments [Line Items]
Gross Realized Gains	$ 4,829	$ 2	$ 7,385	$ 1,061
Gross Realized Losses	(232)	0	(246)	(36)
Net Gains (Losses)	4,597	2	7,139	1,025
Equity Securities [Member]
Gain (Loss) on Investments [Line Items]
Gross Realized Gains	4,817	2	7,167	739
Gross Realized Losses	0	0	0	(10)
Net Gains (Losses)	4,817	2	7,167	729
Debt Securities [Member]
Gain (Loss) on Investments [Line Items]
Gross Realized Gains	12	0	218	322
Gross Realized Losses	(232)	0	(246)	(26)
Net Gains (Losses)	$ (220)	$ 0	$ (28)	$ 296

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) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
State and Municipal Securities [Member]
Schedule of Investments [Line Items]
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value	$ 121,527	$ 247,509
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	(1,930)	(15,676)
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value	87,466	0
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	(3,475)	0
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value	208,993	247,509
Available-for-sale Securities, Continuous Unrealized Loss Position, Accumulated Loss	(5,405)	(15,676)
Corporate Debt Securities [Member]
Schedule of Investments [Line Items]
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value	3,570	11,922
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	(16)	(110)
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value	31,533	34,629
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	(1,940)	(4,475)
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value	35,103	46,551
Available-for-sale Securities, Continuous Unrealized Loss Position, Accumulated Loss	(1,956)	(4,585)
Collateralized Mortgage Obligations [Member]
Schedule of Investments [Line Items]
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value	85,335	166,905
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	(837)	(3,899)
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value	301,009	258,237
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	(8,710)	(8,279)
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value	386,344	425,142
Available-for-sale Securities, Continuous Unrealized Loss Position, Accumulated Loss	(9,547)	(12,178)
Residential Mortgage Backed Securities [Member]
Schedule of Investments [Line Items]
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value	796,019	1,112,947
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	(8,359)	(16,900)
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value	5,513	0
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	(202)	0
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value	801,532	1,112,947
Available-for-sale Securities, Continuous Unrealized Loss Position, Accumulated Loss	(8,561)	(16,900)
Commercial Mortgage Backed Securities [Member]
Schedule of Investments [Line Items]
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value	87,260	24,563
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	(627)	(537)
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value	0	0
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	0	0
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value	87,260	24,563
Available-for-sale Securities, Continuous Unrealized Loss Position, Accumulated Loss	(627)	(537)
Auction Rate Securities [Member]
Schedule of Investments [Line Items]
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value	0	0
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	0	0
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value	98,156	97,256
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	(9,254)	(9,959)
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value	98,156	97,256
Available-for-sale Securities, Continuous Unrealized Loss Position, Accumulated Loss	(9,254)	(9,959)
Debt Securities [Member]
Schedule of Investments [Line Items]
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value	1,093,711	1,563,846
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	(11,769)	(37,122)
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value	523,677	390,122
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	(23,581)	(22,713)
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value	1,617,388	1,953,968
Available-for-sale Securities, Continuous Unrealized Loss Position, Accumulated Loss	$ (35,350)	$ (59,835)

Investment Securities Summary39

Investment Securities Summary of Amortized Cost and Fair Values of Corporate Debt Securities (Details) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	$ 2,569,641
Corporate debt securities	2,548,457
Corporate Debt Securities Issued by Financial Institutions [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	88,366	$ 108,014
Corporate debt securities	88,988	105,407
Single-issuer Trust Preferred Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	39,186	43,746
Corporate debt securities	38,251	39,829
Subordinated Debt
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	37,147	46,231
Corporate debt securities	37,859	46,723
Senior Debt Obligations [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	12,033	18,037
Corporate debt securities	12,456	18,433
Pooled Trust Preferred Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	0	0
Corporate debt securities	422	422
Other Corporate Debt Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	3,989	4,002
Corporate debt securities	3,989	4,002
Corporate Debt Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	92,355	112,016
Corporate debt securities	$ 92,977	$ 109,409

Investment Securities Narrative

Investment Securities Narrative (Details) $ in Thousands	9 Months Ended
Investment Securities Narrative (Details) $ in Thousands	Sep. 30, 2017USD ($)security	Dec. 31, 2016USD ($)	Sep. 30, 2016USD ($)
Schedule of Investments [Line Items]
Securities pledged as collateral	$ 1,900,000	$ 1,800,000
Amortized cost	2,576,201	2,594,255
Available-for-sale Securities, Fair Value Disclosure	2,561,516	2,559,227
Single Bank Stock Investment, cost basis	4,200
Single Bank Stock Investment, Fair Value	$ 8,800
Percent Ownership In An Individual Financial Institution	73.40%
Individual Bank Stock Investment Percent to Total Portfolio	10.00%
Equity Securities [Member]
Schedule of Investments [Line Items]
Amortized cost	$ 6,560	12,231
Available-for-sale Securities, Fair Value Disclosure	13,059	24,526
Equity Securities Financial Institution [Member]
Schedule of Investments [Line Items]
Available-for-sale Securities, Equity Securities	12,100	23,500
Amortized cost	5,800
Available-for-sale Securities, Fair Value Disclosure	12,100
Other Equity Securities [Member]
Schedule of Investments [Line Items]
Available-for-sale Securities, Equity Securities	1,000	$ 1,000
Single-issuer Trust Preferred Securities [Member]
Schedule of Investments [Line Items]
Unrealized Loss on Securities	$ 935
Number of Trust Preferred Securities \| security	18
External Credit Rating, BBB [Member] \| Single-issuer Trust Preferred Securities [Member]
Schedule of Investments [Line Items]
Amortized cost	$ 3,800
Available-for-sale Securities, Fair Value Disclosure	$ 2,800
Not Rated By An External Agency [Member] \| Single-issuer Trust Preferred Securities [Member]
Schedule of Investments [Line Items]
Number of Trust Preferred Securities \| security	2
External Credit Rating, Rated Below Investment Grade [Member] \| Single-issuer Trust Preferred Securities [Member]
Schedule of Investments [Line Items]
Amortized cost	$ 6,900
Available-for-sale Securities, Fair Value Disclosure	$ 6,600
Number of Trust Preferred Securities \| security	5
Pooled Trust Preferred Securities [Member]
Schedule of Investments [Line Items]
Other than Temporary Impairment, Credit Losses Recognized in Earnings, Credit Losses on Debt Securities Held	$ 10,000		$ 10,000

Loans and Allowance for Credi41

Loans and Allowance for Credit Losses Summary Of Gross Loans (Details) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016	Sep. 30, 2016
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, gross of unearned income	$ 15,511,209	$ 14,718,662
Deferred Revenue	24,310	19,390
Loans, net of unearned income	15,486,899	14,699,272	$ 14,391,238
Real-estate - commercial mortgage
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, gross of unearned income	6,275,140	6,018,582
Loans, net of unearned income	6,275,140	6,018,582	5,818,915
Commercial - industrial, financial and agricultural
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, gross of unearned income	4,223,075	4,087,486
Loans, net of unearned income	4,223,075	4,087,486	4,024,119
Real-estate - home equity
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, gross of unearned income	1,567,473	1,625,115
Loans, net of unearned income	1,567,473	1,625,115	1,640,421
Real estate - residential mortgage
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, gross of unearned income	1,887,907	1,601,994
Loans, net of unearned income	1,887,907	1,601,994	1,542,696
Real-estate - construction
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, gross of unearned income	973,108	843,649
Loans, net of unearned income	973,108	843,649	861,634
Consumer
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, gross of unearned income	302,448	291,470
Loans, net of unearned income	302,448	291,470	$ 283,673
Leasing and other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, gross of unearned income	278,658	246,704
Overdrafts
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, gross of unearned income	$ 3,400	$ 3,662

Loans and Allowance for Credi42

Loans and Allowance for Credit Losses Allowance for Credit Losses (Details) - USD ($) $ in Thousands	Sep. 30, 2017	Jun. 30, 2017	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Dec. 31, 2015
Receivables [Abstract]
Allowance for loan losses	$ 172,245	$ 172,342	$ 168,679	$ 162,526	$ 162,546	$ 169,054
Reserve for unfunded lending commitments	2,504		2,646
Allowance for credit losses	$ 174,749	$ 174,998	$ 171,325	$ 165,169	$ 165,108	$ 171,412

Loans and Allowance for Credi43

Loans and Allowance for Credit Losses Activity in the Allowance for Credit Losses (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Allowance for Loan and Lease Losses [Roll Forward]
Balance at beginning of period	$ 174,998	$ 165,108	$ 171,325	$ 171,412
Loans charged off	(7,795)	(7,672)	(25,917)	(29,573)
Recoveries of loans previously charged off	2,471	3,592	12,766	15,148
Net loans charged off	(5,324)	(4,080)	(13,151)	(14,425)
Provision for credit losses	5,075	4,141	16,575	8,182
Balance at end of period	$ 174,749	$ 165,169	$ 174,749	$ 165,169

Loans and Allowance for Credi44

Loans and Allowance for Credit Losses Allowance for Loan Losses by Portfolio Segment (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Accounts, Notes, Loans and Financing Receivable [Line Items]
Beginning Balance	$ 172,342	$ 162,546	$ 168,679	$ 169,054
Loans charged off	(7,795)	(7,672)	(25,917)	(29,573)
Recoveries of loans previously charged off	2,471	3,592	12,766	15,148
Net loans charged off	(5,324)	(4,080)	(13,151)	(14,425)
Provision for loan losses	5,227	4,060	16,717	7,897
Ending Balance	172,245	162,526	172,245	162,526
Provision for loan losses gross	(152)	81	(142)	285
Provision for credit losses	5,075	4,141	16,575	8,182
Real-estate - commercial mortgage
Accounts, Notes, Loans and Financing Receivable [Line Items]
Beginning Balance	57,372	43,740	46,842	47,866
Loans charged off	(483)	(1,350)	(1,949)	(3,406)
Recoveries of loans previously charged off	106	296	1,490	2,488
Net loans charged off	(377)	(1,054)	(459)	(918)
Provision for loan losses	(2,008)	3,171	8,604	(1,091)
Ending Balance	54,987	45,857	54,987	45,857
Commercial - industrial, financial and agricultural
Accounts, Notes, Loans and Financing Receivable [Line Items]
Beginning Balance	67,642	51,755	54,353	57,098
Loans charged off	(2,714)	(3,144)	(13,594)	(13,957)
Recoveries of loans previously charged off	665	1,539	6,830	6,789
Net loans charged off	(2,049)	(1,605)	(6,764)	(7,168)
Provision for loan losses	5,392	(1,871)	23,396	(1,651)
Ending Balance	70,985	48,279	70,985	48,279
Real-estate - home equity
Accounts, Notes, Loans and Financing Receivable [Line Items]
Beginning Balance	17,456	26,170	26,801	22,405
Loans charged off	(547)	(709)	(1,837)	(3,295)
Recoveries of loans previously charged off	252	241	604	929
Net loans charged off	(295)	(468)	(1,233)	(2,366)
Provision for loan losses	1,297	1,419	(7,110)	7,082
Ending Balance	18,458	27,121	18,458	27,121
Real estate - residential mortgage
Accounts, Notes, Loans and Financing Receivable [Line Items]
Beginning Balance	16,439	21,226	22,929	21,375
Loans charged off	(195)	(802)	(535)	(2,210)
Recoveries of loans previously charged off	219	228	600	784
Net loans charged off	24	(574)	65	(1,426)
Provision for loan losses	220	1,452	(6,311)	2,155
Ending Balance	16,683	22,104	16,683	22,104
Real-estate - construction
Accounts, Notes, Loans and Financing Receivable [Line Items]
Beginning Balance	9,534	5,772	6,455	6,529
Loans charged off	(2,744)	(150)	(3,765)	(1,218)
Recoveries of loans previously charged off	629	898	1,550	2,844
Net loans charged off	(2,115)	748	(2,215)	1,626
Provision for loan losses	(283)	23	2,896	(1,612)
Ending Balance	7,136	6,543	7,136	6,543
Consumer
Accounts, Notes, Loans and Financing Receivable [Line Items]
Beginning Balance	1,794	2,984	3,574	2,585
Loans charged off	(373)	(685)	(1,659)	(2,261)
Recoveries of loans previously charged off	193	222	899	957
Net loans charged off	(180)	(463)	(760)	(1,304)
Provision for loan losses	383	852	(817)	2,092
Ending Balance	1,997	3,373	1,997	3,373
Leasing, other and overdrafts
Accounts, Notes, Loans and Financing Receivable [Line Items]
Beginning Balance	2,105	2,518	3,192	2,468
Loans charged off	(739)	(832)	(2,578)	(3,226)
Recoveries of loans previously charged off	407	168	793	357
Net loans charged off	(332)	(664)	(1,785)	(2,869)
Provision for loan losses	226	1,075	592	3,330
Ending Balance	1,999	2,929	1,999	2,929
Unallocated
Accounts, Notes, Loans and Financing Receivable [Line Items]
Beginning Balance	0	8,381	4,533	8,728
Loans charged off	0	0	0	0
Recoveries of loans previously charged off	0	0	0	0
Net loans charged off	0	0	0	0
Provision for loan losses	0	(2,061)	(4,533)	(2,408)
Ending Balance	$ 0	$ 6,320	$ 0	$ 6,320

Loans and Allowance for Credi45

Loans and Allowance for Credit Losses Present Loans, Net of Unearned Income and Their Related Allowance for Loan Losses, by Portfolio Segment (Details) - USD ($) $ in Thousands	Sep. 30, 2017	Jun. 30, 2017	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Dec. 31, 2015
Accounts, Notes, Loans and Financing Receivable [Line Items]
Measured for impairment under FASB ASC Subtopic 450-20	$ 126,544			$ 120,264
Evaluated for impairment under FASB ASC Section 310-10-35	45,701			42,262
Allowance for loan losses	172,245	$ 172,342	$ 168,679	162,526	$ 162,546	$ 169,054
Measured for impairment under FASB ASC Subtopic 450-20	15,300,419			14,208,244
Evaluated for impairment under FASB ASC Section 310-10-35	186,480			182,994
Loans, net of unearned income	15,486,899		14,699,272	14,391,238
Real-estate - commercial mortgage
Accounts, Notes, Loans and Financing Receivable [Line Items]
Measured for impairment under FASB ASC Subtopic 450-20	47,261			36,151
Evaluated for impairment under FASB ASC Section 310-10-35	7,726			9,706
Allowance for loan losses	54,987	57,372	46,842	45,857	43,740	47,866
Measured for impairment under FASB ASC Subtopic 450-20	6,228,935			5,763,863
Evaluated for impairment under FASB ASC Section 310-10-35	46,205			55,052
Loans, net of unearned income	6,275,140		6,018,582	5,818,915
Commercial - industrial, financial and agricultural
Accounts, Notes, Loans and Financing Receivable [Line Items]
Measured for impairment under FASB ASC Subtopic 450-20	55,486			38,858
Evaluated for impairment under FASB ASC Section 310-10-35	15,499			9,421
Allowance for loan losses	70,985	67,642	54,353	48,279	51,755	57,098
Measured for impairment under FASB ASC Subtopic 450-20	4,162,857			3,972,461
Evaluated for impairment under FASB ASC Section 310-10-35	60,218			51,658
Loans, net of unearned income	4,223,075		4,087,486	4,024,119
Real-estate - home equity
Accounts, Notes, Loans and Financing Receivable [Line Items]
Measured for impairment under FASB ASC Subtopic 450-20	7,632			17,828
Evaluated for impairment under FASB ASC Section 310-10-35	10,826			9,293
Allowance for loan losses	18,458	17,456	26,801	27,121	26,170	22,405
Measured for impairment under FASB ASC Subtopic 450-20	1,543,551			1,621,731
Evaluated for impairment under FASB ASC Section 310-10-35	23,922			18,690
Loans, net of unearned income	1,567,473		1,625,115	1,640,421
Real estate - residential mortgage
Accounts, Notes, Loans and Financing Receivable [Line Items]
Measured for impairment under FASB ASC Subtopic 450-20	6,488			10,410
Evaluated for impairment under FASB ASC Section 310-10-35	10,195			11,694
Allowance for loan losses	16,683	16,439	22,929	22,104	21,226	21,375
Measured for impairment under FASB ASC Subtopic 450-20	1,845,329			1,496,461
Evaluated for impairment under FASB ASC Section 310-10-35	42,578			46,235
Loans, net of unearned income	1,887,907		1,601,994	1,542,696
Real-estate - construction
Accounts, Notes, Loans and Financing Receivable [Line Items]
Measured for impairment under FASB ASC Subtopic 450-20	5,702			4,422
Evaluated for impairment under FASB ASC Section 310-10-35	1,434			2,121
Allowance for loan losses	7,136	9,534	6,455	6,543	5,772	6,529
Measured for impairment under FASB ASC Subtopic 450-20	959,584			850,315
Evaluated for impairment under FASB ASC Section 310-10-35	13,524			11,319
Loans, net of unearned income	973,108		843,649	861,634
Consumer
Accounts, Notes, Loans and Financing Receivable [Line Items]
Measured for impairment under FASB ASC Subtopic 450-20	1,976			3,346
Evaluated for impairment under FASB ASC Section 310-10-35	21			27
Allowance for loan losses	1,997	1,794	3,574	3,373	2,984	2,585
Measured for impairment under FASB ASC Subtopic 450-20	302,415			283,633
Evaluated for impairment under FASB ASC Section 310-10-35	33			40
Loans, net of unearned income	302,448		291,470	283,673
Leasing, other and overdrafts
Accounts, Notes, Loans and Financing Receivable [Line Items]
Measured for impairment under FASB ASC Subtopic 450-20	1,999			2,929
Evaluated for impairment under FASB ASC Section 310-10-35	0			0
Allowance for loan losses	1,999	2,105	3,192	2,929	2,518	2,468
Measured for impairment under FASB ASC Subtopic 450-20	257,748			219,780
Evaluated for impairment under FASB ASC Section 310-10-35	0			0
Loans, net of unearned income	257,748		230,976	219,780
Unallocated
Accounts, Notes, Loans and Financing Receivable [Line Items]
Measured for impairment under FASB ASC Subtopic 450-20	0			6,320
Allowance for loan losses	$ 0	$ 0	$ 4,533	$ 6,320	$ 8,381	$ 8,728

Loans and Allowance for Credi46

Loans and Allowance for Credit Losses Total Impaired Loans by Class Segments (Details) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Impaired Financing Receivables [Line Items]
Unpaid principal balance, with no related allowance	$ 76,149	$ 69,013
Unpaid principal balance, with related allowance	146,644	150,797
Unpaid Principal Balance	222,793	219,810
Recorded investment, with no related allowance	65,106	60,457
Recorded investment, with related allowance	121,374	119,236
Recorded Investment	186,480	179,693
Related Allowance	45,701	47,117
Real-estate - commercial mortgage
Impaired Financing Receivables [Line Items]
Unpaid principal balance, with no related allowance	24,722	28,757
Unpaid principal balance, with related allowance	32,770	37,132
Recorded investment, with no related allowance	21,000	25,447
Recorded investment, with related allowance	25,205	29,446
Related Allowance	7,726	10,162
Commercial - secured
Impaired Financing Receivables [Line Items]
Unpaid principal balance, with no related allowance	32,738	29,296
Unpaid principal balance, with related allowance	33,481	27,767
Recorded investment, with no related allowance	30,053	25,526
Recorded investment, with related allowance	29,189	22,626
Related Allowance	14,974	13,198
Real estate - residential mortgage
Impaired Financing Receivables [Line Items]
Unpaid principal balance, with no related allowance	4,603	4,689
Unpaid principal balance, with related allowance	43,979	48,885
Recorded investment, with no related allowance	4,603	4,689
Recorded investment, with related allowance	37,975	41,359
Related Allowance	10,195	11,897
Construction - commercial residential
Impaired Financing Receivables [Line Items]
Unpaid principal balance, with no related allowance	14,086	6,271
Unpaid principal balance, with related allowance	6,119	10,103
Recorded investment, with no related allowance	9,450	4,795
Recorded investment, with related allowance	2,883	4,206
Related Allowance	1,006	1,300
Commercial - unsecured
Impaired Financing Receivables [Line Items]
Unpaid principal balance, with related allowance	1,236	1,122
Recorded investment, with related allowance	976	823
Related Allowance	525	455
Real-estate - home equity
Impaired Financing Receivables [Line Items]
Unpaid principal balance, with related allowance	27,739	23,971
Recorded investment, with related allowance	23,922	19,205
Related Allowance	10,826	9,511
Construction - commercial
Impaired Financing Receivables [Line Items]
Unpaid principal balance, with related allowance	186	681
Recorded investment, with related allowance	100	435
Related Allowance	36	145
Construction - other
Impaired Financing Receivables [Line Items]
Unpaid principal balance, with related allowance	1,096	1,096
Recorded investment, with related allowance	1,091	1,096
Related Allowance	392	423
Consumer - direct
Impaired Financing Receivables [Line Items]
Unpaid principal balance, with related allowance	24	21
Recorded investment, with related allowance	19	21
Related Allowance	13	14
Consumer - indirect
Impaired Financing Receivables [Line Items]
Unpaid principal balance, with related allowance	14	19
Recorded investment, with related allowance	14	19
Related Allowance	$ 8	$ 12

Loans and Allowance for Credi47

Loans and Allowance for Credit Losses Average Impaired Loans by Class Segment (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Financing Receivable, Impaired [Line Items]
Impaired Financing Receivable, with No Related Allowance, Average Recorded Investment	$ 68,400	$ 60,769	$ 63,767	$ 54,813
Impaired Financing Receivable, with No Related Allowance, Interest Income, Accrual Method	150	153	431	428
Impaired Financing Receivable, with Related Allowance, Average Recorded Investment	118,513	117,185	119,225	127,302
Impaired Financing Receivable, with Related Allowance, Interest Income, Accrual Method	499	426	1,409	1,330
Impaired Financing Receivable, Average Recorded Investment	186,913	177,954	182,992	182,115
Impaired Financing Receivable, Interest Income, Accrual Method	649	579	1,840	1,758
Real-estate - commercial mortgage
Financing Receivable, Impaired [Line Items]
Impaired Financing Receivable, with No Related Allowance, Average Recorded Investment	21,698	25,048	22,770	23,929
Impaired Financing Receivable, with No Related Allowance, Interest Income, Accrual Method	72	78	213	219
Impaired Financing Receivable, with Related Allowance, Average Recorded Investment	25,910	29,139	27,518	32,310
Impaired Financing Receivable, with Related Allowance, Interest Income, Accrual Method	86	91	259	303
Commercial - secured
Financing Receivable, Impaired [Line Items]
Impaired Financing Receivable, with No Related Allowance, Average Recorded Investment	33,044	23,836	29,309	18,400
Impaired Financing Receivable, with No Related Allowance, Interest Income, Accrual Method	46	32	128	68
Impaired Financing Receivable, with Related Allowance, Average Recorded Investment	24,334	21,688	23,291	26,665
Impaired Financing Receivable, with Related Allowance, Interest Income, Accrual Method	33	29	96	100
Commercial - unsecured
Financing Receivable, Impaired [Line Items]
Impaired Financing Receivable, with Related Allowance, Average Recorded Investment	818	953	806	903
Impaired Financing Receivable, with Related Allowance, Interest Income, Accrual Method	1	1	1	3
Real-estate - home equity
Financing Receivable, Impaired [Line Items]
Impaired Financing Receivable, with Related Allowance, Average Recorded Investment	22,837	18,283	20,957	17,589
Impaired Financing Receivable, with Related Allowance, Interest Income, Accrual Method	150	76	362	203
Real estate - residential mortgage
Financing Receivable, Impaired [Line Items]
Impaired Financing Receivable, with No Related Allowance, Average Recorded Investment	4,616	6,151	4,645	5,826
Impaired Financing Receivable, with No Related Allowance, Interest Income, Accrual Method	27	33	79	96
Impaired Financing Receivable, with Related Allowance, Average Recorded Investment	38,329	40,913	39,584	42,399
Impaired Financing Receivable, with Related Allowance, Interest Income, Accrual Method	225	221	680	683
Construction - commercial residential
Financing Receivable, Impaired [Line Items]
Impaired Financing Receivable, with No Related Allowance, Average Recorded Investment	8,747	5,734	6,745	6,658
Impaired Financing Receivable, with No Related Allowance, Interest Income, Accrual Method	5	10	11	45
Impaired Financing Receivable, with Related Allowance, Average Recorded Investment	5,047	4,947	5,397	5,568
Impaired Financing Receivable, with Related Allowance, Interest Income, Accrual Method	4	8	11	37
Construction - commercial
Financing Receivable, Impaired [Line Items]
Impaired Financing Receivable, with No Related Allowance, Average Recorded Investment	295	0	298	0
Impaired Financing Receivable, with No Related Allowance, Interest Income, Accrual Method	0	0	0	0
Impaired Financing Receivable, with Related Allowance, Average Recorded Investment	113	476	186	546
Impaired Financing Receivable, with Related Allowance, Interest Income, Accrual Method	0	0	0	0
Construction - other
Financing Receivable, Impaired [Line Items]
Impaired Financing Receivable, with Related Allowance, Average Recorded Investment	1,091	756	1,094	579
Impaired Financing Receivable, with Related Allowance, Interest Income, Accrual Method	0	0	0	0
Consumer - direct
Financing Receivable, Impaired [Line Items]
Impaired Financing Receivable, with Related Allowance, Average Recorded Investment	19	19	19	17
Impaired Financing Receivable, with Related Allowance, Interest Income, Accrual Method	0	0	0	1
Consumer - indirect
Financing Receivable, Impaired [Line Items]
Impaired Financing Receivable, with Related Allowance, Average Recorded Investment	15	11	17	14
Impaired Financing Receivable, with Related Allowance, Interest Income, Accrual Method	0	0	0	0
Leasing, other and overdrafts
Financing Receivable, Impaired [Line Items]
Impaired Financing Receivable, with Related Allowance, Average Recorded Investment	0	0	356	712
Impaired Financing Receivable, with Related Allowance, Interest Income, Accrual Method	$ 0	$ 0	$ 0	$ 0

Loans and Allowance for Credi48

Loans and Allowance for Credit Losses Credit Quality Indicators (Details) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Internal risk ratings for loans by segment [Line Items]
Loans and Leases Receivable, Gross	$ 15,511,209	$ 14,718,662
Real-estate - commercial mortgage
Internal risk ratings for loans by segment [Line Items]
Loans and Leases Receivable, Gross	6,275,140	6,018,582
Real-estate - commercial mortgage \| Pass
Internal risk ratings for loans by segment [Line Items]
Loans and Leases Receivable, Gross	6,028,523	5,763,122
Real-estate - commercial mortgage \| Special Mention
Internal risk ratings for loans by segment [Line Items]
Loans and Leases Receivable, Gross	118,947	132,484
Real-estate - commercial mortgage \| December 31, 2016
Internal risk ratings for loans by segment [Line Items]
Loans and Leases Receivable, Gross	127,670	122,976
Commercial - secured
Internal risk ratings for loans by segment [Line Items]
Loans and Leases Receivable, Gross	4,088,958	3,933,552
Commercial - secured \| Pass
Internal risk ratings for loans by segment [Line Items]
Loans and Leases Receivable, Gross	3,807,138	3,686,152
Commercial - secured \| Special Mention
Internal risk ratings for loans by segment [Line Items]
Loans and Leases Receivable, Gross	98,639	128,873
Commercial - secured \| December 31, 2016
Internal risk ratings for loans by segment [Line Items]
Loans and Leases Receivable, Gross	183,181	118,527
Commercial - unsecured
Internal risk ratings for loans by segment [Line Items]
Loans and Leases Receivable, Gross	134,117	153,934
Commercial - unsecured \| Pass
Internal risk ratings for loans by segment [Line Items]
Loans and Leases Receivable, Gross	127,561	145,922
Commercial - unsecured \| Special Mention
Internal risk ratings for loans by segment [Line Items]
Loans and Leases Receivable, Gross	3,474	4,481
Commercial - unsecured \| December 31, 2016
Internal risk ratings for loans by segment [Line Items]
Loans and Leases Receivable, Gross	3,082	3,531
Commercial - industrial, financial and agricultural
Internal risk ratings for loans by segment [Line Items]
Loans and Leases Receivable, Gross	4,223,075	4,087,486
Commercial - industrial, financial and agricultural \| Pass
Internal risk ratings for loans by segment [Line Items]
Loans and Leases Receivable, Gross	3,934,699	3,832,074
Commercial - industrial, financial and agricultural \| Special Mention
Internal risk ratings for loans by segment [Line Items]
Loans and Leases Receivable, Gross	102,113	133,354
Commercial - industrial, financial and agricultural \| December 31, 2016
Internal risk ratings for loans by segment [Line Items]
Loans and Leases Receivable, Gross	186,263	122,058
Construction - commercial residential
Internal risk ratings for loans by segment [Line Items]
Loans and Leases Receivable, Gross	156,127	142,189
Construction - commercial residential \| Pass
Internal risk ratings for loans by segment [Line Items]
Loans and Leases Receivable, Gross	134,786	113,570
Construction - commercial residential \| Special Mention
Internal risk ratings for loans by segment [Line Items]
Loans and Leases Receivable, Gross	6,746	15,447
Construction - commercial residential \| December 31, 2016
Internal risk ratings for loans by segment [Line Items]
Loans and Leases Receivable, Gross	14,595	13,172
Construction - commercial
Internal risk ratings for loans by segment [Line Items]
Loans and Leases Receivable, Gross	751,398	644,490
Construction - commercial \| Pass
Internal risk ratings for loans by segment [Line Items]
Loans and Leases Receivable, Gross	743,111	635,963
Construction - commercial \| Special Mention
Internal risk ratings for loans by segment [Line Items]
Loans and Leases Receivable, Gross	4,418	3,412
Construction - commercial \| December 31, 2016
Internal risk ratings for loans by segment [Line Items]
Loans and Leases Receivable, Gross	3,869	5,115
Construction - Commercial and Commercial Residential
Internal risk ratings for loans by segment [Line Items]
Loans and Leases Receivable, Gross	907,525	786,679
Construction - Commercial and Commercial Residential \| Pass
Internal risk ratings for loans by segment [Line Items]
Loans and Leases Receivable, Gross	877,897	749,533
Construction - Commercial and Commercial Residential \| Special Mention
Internal risk ratings for loans by segment [Line Items]
Loans and Leases Receivable, Gross	11,164	18,859
Construction - Commercial and Commercial Residential \| December 31, 2016
Internal risk ratings for loans by segment [Line Items]
Loans and Leases Receivable, Gross	18,464	18,287
Commercial Loans, Commerical Mortgages, Constructions Loans
Internal risk ratings for loans by segment [Line Items]
Loans and Leases Receivable, Gross	$ 11,405,740	$ 10,892,747
Percentage of total loans rated	100.00%	100.00%
Commercial Loans, Commerical Mortgages, Constructions Loans \| Pass
Internal risk ratings for loans by segment [Line Items]
Loans and Leases Receivable, Gross	$ 10,841,119	$ 10,344,729
Percentage of total loans rated	95.10%	95.00%
Commercial Loans, Commerical Mortgages, Constructions Loans \| Special Mention
Internal risk ratings for loans by segment [Line Items]
Loans and Leases Receivable, Gross	$ 232,224	$ 284,697
Percentage of total loans rated	2.00%	2.60%
Commercial Loans, Commerical Mortgages, Constructions Loans \| December 31, 2016
Internal risk ratings for loans by segment [Line Items]
Loans and Leases Receivable, Gross	$ 332,397	$ 263,321
Percentage of total loans rated	2.90%	2.40%

Loans and Allowance for Credi49

Loans and Allowance for Credit Losses Summary of Delinquency and Non-Performing Status by Portfolio Segment (Details) $ in Thousands	9 Months Ended
	Sep. 30, 2017USD ($)day	Dec. 31, 2016USD ($)	Sep. 30, 2016USD ($)
Financing Receivable, Impaired [Line Items]
Loans, net of unearned income	$ 15,486,899	$ 14,699,272	$ 14,391,238
Delinquent \| Minimum
Financing Receivable, Impaired [Line Items]
Days past due \| day	30
Delinquent \| Maximum
Financing Receivable, Impaired [Line Items]
Days past due \| day	89
Non-performing
Financing Receivable, Impaired [Line Items]
Days past due \| day	90
Real-estate - home equity
Financing Receivable, Impaired [Line Items]
Loans, net of unearned income	$ 1,567,473	1,625,115	1,640,421
Real-estate - home equity \| Performing
Financing Receivable, Impaired [Line Items]
Loans, net of unearned income	1,542,289	1,602,687
Real-estate - home equity \| Delinquent
Financing Receivable, Impaired [Line Items]
Loans, net of unearned income	12,955	9,274
Real-estate - home equity \| Non-performing
Financing Receivable, Impaired [Line Items]
Loans, net of unearned income	12,229	13,154
Real estate - residential mortgage
Financing Receivable, Impaired [Line Items]
Loans, net of unearned income	1,887,907	1,601,994	1,542,696
Real estate - residential mortgage \| Performing
Financing Receivable, Impaired [Line Items]
Loans, net of unearned income	1,845,495	1,557,995
Real estate - residential mortgage \| Delinquent
Financing Receivable, Impaired [Line Items]
Loans, net of unearned income	20,769	20,344
Real estate - residential mortgage \| Non-performing
Financing Receivable, Impaired [Line Items]
Loans, net of unearned income	21,643	23,655
Construction - other
Financing Receivable, Impaired [Line Items]
Loans, net of unearned income	65,583	56,970
Construction - other \| Performing
Financing Receivable, Impaired [Line Items]
Loans, net of unearned income	64,110	55,874
Construction - other \| Delinquent
Financing Receivable, Impaired [Line Items]
Loans, net of unearned income	382	0
Construction - other \| Non-performing
Financing Receivable, Impaired [Line Items]
Loans, net of unearned income	1,091	1,096
Consumer - direct
Financing Receivable, Impaired [Line Items]
Loans, net of unearned income	55,711	96,887
Consumer - direct \| Performing
Financing Receivable, Impaired [Line Items]
Loans, net of unearned income	55,490	93,572
Consumer - direct \| Delinquent
Financing Receivable, Impaired [Line Items]
Loans, net of unearned income	158	1,752
Consumer - direct \| Non-performing
Financing Receivable, Impaired [Line Items]
Loans, net of unearned income	63	1,563
Consumer - indirect
Financing Receivable, Impaired [Line Items]
Loans, net of unearned income	246,737	194,583
Consumer - indirect \| Performing
Financing Receivable, Impaired [Line Items]
Loans, net of unearned income	243,723	190,656
Consumer - indirect \| Delinquent
Financing Receivable, Impaired [Line Items]
Loans, net of unearned income	2,834	3,599
Consumer - indirect \| Non-performing
Financing Receivable, Impaired [Line Items]
Loans, net of unearned income	180	328
Consumer
Financing Receivable, Impaired [Line Items]
Loans, net of unearned income	302,448	291,470	283,673
Consumer \| Performing
Financing Receivable, Impaired [Line Items]
Loans, net of unearned income	299,213	284,228
Consumer \| Delinquent
Financing Receivable, Impaired [Line Items]
Loans, net of unearned income	2,992	5,351
Consumer \| Non-performing
Financing Receivable, Impaired [Line Items]
Loans, net of unearned income	243	1,891
Leasing, other and overdrafts
Financing Receivable, Impaired [Line Items]
Loans, net of unearned income	257,748	230,976	$ 219,780
Leasing, other and overdrafts \| Performing
Financing Receivable, Impaired [Line Items]
Loans, net of unearned income	256,784	229,591
Leasing, other and overdrafts \| Delinquent
Financing Receivable, Impaired [Line Items]
Loans, net of unearned income	884	1,068
Leasing, other and overdrafts \| Non-performing
Financing Receivable, Impaired [Line Items]
Loans, net of unearned income	80	317
Commercial Loans, Commerical Mortgages, Constructions Loans
Financing Receivable, Impaired [Line Items]
Loans, net of unearned income	$ 4,081,159	$ 3,806,525
% of Total	100.00%	100.00%
Commercial Loans, Commerical Mortgages, Constructions Loans \| Performing
Financing Receivable, Impaired [Line Items]
Loans, net of unearned income	$ 4,007,891	$ 3,730,375
% of Total	98.20%	98.00%
Commercial Loans, Commerical Mortgages, Constructions Loans \| Delinquent
Financing Receivable, Impaired [Line Items]
Loans, net of unearned income	$ 37,982	$ 36,037
% of Total	0.90%	0.90%
Commercial Loans, Commerical Mortgages, Constructions Loans \| Non-performing
Financing Receivable, Impaired [Line Items]
Loans, net of unearned income	$ 35,286	$ 40,113
% of Total	0.90%	1.10%

Loans and Allowance for Credi50

Loans and Allowance for Credit Losses Non-Performing Assets (Details) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Receivables [Abstract]
Non-accrual loans	$ 123,345	$ 120,133
Loans 90 days or more past due and still accruing	13,124	11,505
Total non-performing loans	136,469	131,638
Other real estate owned (OREO)	10,542	12,815
Total non-performing assets	$ 147,011	$ 144,453

Loans and Allowance for Credi51

Loans and Allowance for Credit Losses Past Due Loan Status and Non-Accrual Loans by Portfolio Segment (Details) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016	Sep. 30, 2016
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	$ 198,716	$ 186,787
≥ 90 Days Past Due and Accruing	13,124	11,505
Non- accrual	123,345	120,133
Current	15,288,183	14,512,485
Loans, net of unearned income	15,486,899	14,699,272	$ 14,391,238
Financing Receivables, 30 to 59 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	49,493	41,938
Financing Receivables, 60 to 89 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	12,754	13,211
Financing Receivables, Equal to Greater than 90 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	136,469	131,638
Real-estate - commercial mortgage
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	47,223	47,195
≥ 90 Days Past Due and Accruing	2,884	383
Non- accrual	31,766	38,936
Current	6,227,917	5,971,387
Loans, net of unearned income	6,275,140	6,018,582	5,818,915
Real-estate - commercial mortgage \| Financing Receivables, 30 to 59 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	10,276	6,254
Real-estate - commercial mortgage \| Financing Receivables, 60 to 89 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	2,297	1,622
Real-estate - commercial mortgage \| Financing Receivables, Equal to Greater than 90 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	34,650	39,319
Commercial - secured
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	64,050	51,824
≥ 90 Days Past Due and Accruing	1,503	959
Non- accrual	51,787	41,589
Current	4,024,908	3,881,728
Loans, net of unearned income	4,088,958	3,933,552
Commercial - secured \| Financing Receivables, 30 to 59 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	8,382	6,660
Commercial - secured \| Financing Receivables, 60 to 89 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	2,378	2,616
Commercial - secured \| Financing Receivables, Equal to Greater than 90 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	53,290	42,548
Commercial - unsecured
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	1,067	1,845
≥ 90 Days Past Due and Accruing	0	152
Non- accrual	919	760
Current	133,050	152,089
Loans, net of unearned income	134,117	153,934
Commercial - unsecured \| Financing Receivables, 30 to 59 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	114	898
Commercial - unsecured \| Financing Receivables, 60 to 89 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	34	35
Commercial - unsecured \| Financing Receivables, Equal to Greater than 90 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	919	912
Commercial - industrial, financial and agricultural
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	65,117	53,669
≥ 90 Days Past Due and Accruing	1,503	1,111
Non- accrual	52,706	42,349
Current	4,157,958	4,033,817
Loans, net of unearned income	4,223,075	4,087,486	4,024,119
Commercial - industrial, financial and agricultural \| Financing Receivables, 30 to 59 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	8,496	7,558
Commercial - industrial, financial and agricultural \| Financing Receivables, 60 to 89 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	2,412	2,651
Commercial - industrial, financial and agricultural \| Financing Receivables, Equal to Greater than 90 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	54,209	43,460
Real-estate - home equity
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	25,184	22,428
≥ 90 Days Past Due and Accruing	3,096	2,543
Non- accrual	9,133	10,611
Current	1,542,289	1,602,687
Loans, net of unearned income	1,567,473	1,625,115	1,640,421
Real-estate - home equity \| Financing Receivables, 30 to 59 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	11,192	6,596
Real-estate - home equity \| Financing Receivables, 60 to 89 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	1,763	2,678
Real-estate - home equity \| Financing Receivables, Equal to Greater than 90 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	12,229	13,154
Real estate - residential mortgage
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	42,412	43,999
≥ 90 Days Past Due and Accruing	5,258	5,224
Non- accrual	16,385	18,431
Current	1,845,495	1,557,995
Loans, net of unearned income	1,887,907	1,601,994	1,542,696
Real estate - residential mortgage \| Financing Receivables, 30 to 59 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	15,106	15,600
Real estate - residential mortgage \| Financing Receivables, 60 to 89 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	5,663	4,744
Real estate - residential mortgage \| Financing Receivables, Equal to Greater than 90 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	21,643	23,655
Construction - commercial residential
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	12,642	8,595
≥ 90 Days Past Due and Accruing	60	36
Non- accrual	12,164	8,275
Current	143,485	133,594
Loans, net of unearned income	156,127	142,189
Construction - commercial residential \| Financing Receivables, 30 to 59 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	400	233
Construction - commercial residential \| Financing Receivables, 60 to 89 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	18	51
Construction - commercial residential \| Financing Receivables, Equal to Greater than 90 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	12,224	8,311
Construction - commercial
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	466	1,178
≥ 90 Days Past Due and Accruing	0	0
Non- accrual	100	435
Current	750,932	643,312
Loans, net of unearned income	751,398	644,490
Construction - commercial \| Financing Receivables, 30 to 59 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	366	743
Construction - commercial \| Financing Receivables, 60 to 89 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	0	0
Construction - commercial \| Financing Receivables, Equal to Greater than 90 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	100	435
Construction - other
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	1,473	1,096
≥ 90 Days Past Due and Accruing	0	0
Non- accrual	1,091	1,096
Current	64,110	55,874
Loans, net of unearned income	65,583	56,970
Construction - other \| Financing Receivables, 30 to 59 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	382	0
Construction - other \| Financing Receivables, 60 to 89 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	0	0
Construction - other \| Financing Receivables, Equal to Greater than 90 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	1,091	1,096
Real-estate - construction
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	14,581	10,869
≥ 90 Days Past Due and Accruing	60	36
Non- accrual	13,355	9,806
Current	958,527	832,780
Loans, net of unearned income	973,108	843,649	861,634
Real-estate - construction \| Financing Receivables, 30 to 59 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	1,148	976
Real-estate - construction \| Financing Receivables, 60 to 89 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	18	51
Real-estate - construction \| Financing Receivables, Equal to Greater than 90 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	13,415	9,842
Consumer - direct
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	221	3,315
≥ 90 Days Past Due and Accruing	63	1,563
Non- accrual	0	0
Current	55,490	93,572
Loans, net of unearned income	55,711	96,887
Consumer - direct \| Financing Receivables, 30 to 59 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	118	1,211
Consumer - direct \| Financing Receivables, 60 to 89 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	40	541
Consumer - direct \| Financing Receivables, Equal to Greater than 90 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	63	1,563
Consumer - indirect
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	3,014	3,927
≥ 90 Days Past Due and Accruing	180	328
Non- accrual	0	0
Current	243,723	190,656
Loans, net of unearned income	246,737	194,583
Consumer - indirect \| Financing Receivables, 30 to 59 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	2,393	3,200
Consumer - indirect \| Financing Receivables, 60 to 89 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	441	399
Consumer - indirect \| Financing Receivables, Equal to Greater than 90 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	180	328
Consumer
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	3,235	7,242
≥ 90 Days Past Due and Accruing	243	1,891
Non- accrual	0	0
Current	299,213	284,228
Loans, net of unearned income	302,448	291,470	283,673
Consumer \| Financing Receivables, 30 to 59 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	2,511	4,411
Consumer \| Financing Receivables, 60 to 89 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	481	940
Consumer \| Financing Receivables, Equal to Greater than 90 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	243	1,891
Leasing, other and overdrafts
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	964	1,385
≥ 90 Days Past Due and Accruing	80	317
Non- accrual	0	0
Current	256,784	229,591
Loans, net of unearned income	257,748	230,976	$ 219,780
Leasing, other and overdrafts \| Financing Receivables, 30 to 59 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	764	543
Leasing, other and overdrafts \| Financing Receivables, 60 to 89 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	120	525
Leasing, other and overdrafts \| Financing Receivables, Equal to Greater than 90 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	$ 80	$ 317

Loans and Allowance for Credi52

Loans and Allowance for Credit Losses Loans Modified Under Troubled Debt Restructurings (Details) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Financing Receivable, Modifications [Line Items]
Total Accruing Troubled Debt Restructurings	$ 63,135	$ 59,560
Non-accrual TDRs (1)	28,742	27,850
Total TDRs	91,877	87,410
Residential Mortgage [Member]
Financing Receivable, Modifications [Line Items]
Total Accruing Troubled Debt Restructurings	26,193	27,617
Commercial Real Estate [Member]
Financing Receivable, Modifications [Line Items]
Total Accruing Troubled Debt Restructurings	14,439	15,957
Real-estate - home equity
Financing Receivable, Modifications [Line Items]
Total Accruing Troubled Debt Restructurings	14,789	8,594
Commercial - secured
Financing Receivable, Modifications [Line Items]
Total Accruing Troubled Debt Restructurings	7,512	6,627
Construction - commercial residential
Financing Receivable, Modifications [Line Items]
Total Accruing Troubled Debt Restructurings	169	726
Consumer - direct
Financing Receivable, Modifications [Line Items]
Total Accruing Troubled Debt Restructurings	$ 33	$ 39

Loans and Allowance for Credi53

Loans and Allowance for Credit Losses Troubled Debt Restructuring Modification (Details) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017USD ($)loans	Sep. 30, 2016USD ($)loans	Sep. 30, 2017USD ($)loans	Sep. 30, 2016USD ($)loans
Financing Receivable, Modifications [Line Items]
Number of Loans \| loans	27	42	97	115
Post-Modification Recorded Investment \| $	$ 3,468	$ 3,823	$ 16,628	$ 10,303
Extend maturity without rate concession \| Commercial - secured
Financing Receivable, Modifications [Line Items]
Number of Loans \| loans	1	4	9	10
Post-Modification Recorded Investment \| $	$ 160	$ 1,826	$ 5,853	$ 3,802
Extend maturity without rate concession \| Commercial - unsecured
Financing Receivable, Modifications [Line Items]
Number of Loans \| loans	0	0	1	2
Post-Modification Recorded Investment \| $	$ 0	$ 0	$ 33	$ 103
Extend maturity without rate concession \| Real-estate - commercial mortgage
Financing Receivable, Modifications [Line Items]
Number of Loans \| loans	2	0	6	0
Post-Modification Recorded Investment \| $	$ 1,247	$ 0	$ 2,228	$ 0
Extend maturity without rate concession \| Real-estate - home equity
Financing Receivable, Modifications [Line Items]
Number of Loans \| loans	14	24	47	63
Post-Modification Recorded Investment \| $	$ 1,315	$ 1,063	$ 3,874	$ 3,058
Extend maturity without rate concession \| Real estate - residential mortgage
Financing Receivable, Modifications [Line Items]
Number of Loans \| loans	2	0	4	2
Post-Modification Recorded Investment \| $	$ 151	$ 0	$ 488	$ 315
Extend maturity without rate concession \| Construction - commercial residential
Financing Receivable, Modifications [Line Items]
Number of Loans \| loans	0	0	1	0
Post-Modification Recorded Investment \| $	$ 0	$ 0	$ 1,204	$ 0
Bankruptcy \| Commercial - secured
Financing Receivable, Modifications [Line Items]
Number of Loans \| loans	0	0	1	0
Post-Modification Recorded Investment \| $	$ 0	$ 0	$ 490	$ 0
Bankruptcy \| Real-estate - commercial mortgage
Financing Receivable, Modifications [Line Items]
Number of Loans \| loans	0	0	1	0
Post-Modification Recorded Investment \| $	$ 0	$ 0	$ 12	$ 0
Bankruptcy \| Real-estate - home equity
Financing Receivable, Modifications [Line Items]
Number of Loans \| loans	6	11	23	33
Post-Modification Recorded Investment \| $	$ 127	$ 563	$ 1,643	$ 2,279
Bankruptcy \| Real estate - residential mortgage
Financing Receivable, Modifications [Line Items]
Number of Loans \| loans	0	2	2	3
Post-Modification Recorded Investment \| $	$ 0	$ 350	$ 335	$ 723
Bankruptcy \| Consumer - direct
Financing Receivable, Modifications [Line Items]
Number of Loans \| loans	0	0	0	1
Post-Modification Recorded Investment \| $	$ 0	$ 0	$ 0	$ 2
Bankruptcy \| Consumer - indirect
Financing Receivable, Modifications [Line Items]
Number of Loans \| loans	0	1	0	1
Post-Modification Recorded Investment \| $	$ 0	$ 21	$ 0	$ 21

Loans and Allowance for Credi54

Loans and Allowance for Credit Losses TDRs by Class Segment (Details) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017USD ($)loans	Sep. 30, 2016USD ($)loans	Sep. 30, 2017USD ($)loans	Sep. 30, 2016USD ($)loans
Financing Receivable, Modifications [Line Items]
Post-Modification Recorded Investment	$ 3,468	$ 3,823	$ 16,628	$ 10,303
Number of Loans \| loans	27	42	97	115
Number of Loans \| loans			39	45
Recorded Investment			$ 5,445	$ 6,045
Real estate - residential mortgage
Financing Receivable, Modifications [Line Items]
Number of Loans \| loans			5	7
Recorded Investment			$ 1,321	$ 1,395
Real-estate - commercial mortgage
Financing Receivable, Modifications [Line Items]
Number of Loans			3	2
Recorded Investment			$ 653	$ 129
Real-estate - home equity
Financing Receivable, Modifications [Line Items]
Number of Loans \| loans			27	29
Recorded Investment			$ 1,598	$ 1,902
Commercial - secured
Financing Receivable, Modifications [Line Items]
Number of Loans \| loans			2	6
Recorded Investment			$ 264	$ 2,593
Commercial - unsecured
Financing Receivable, Modifications [Line Items]
Number of Loans \| loans			0	1
Recorded Investment			$ 0	$ 26
Construction - commercial residential
Financing Receivable, Modifications [Line Items]
Number of Loans \| loans	1	0
Recorded Investment	$ 1,198	$ 0
Construction - other
Financing Receivable, Modifications [Line Items]
Number of Loans \| loans	1	0
Recorded Investment	$ 411	$ 0
Extend maturity with rate concession \| Real estate - residential mortgage
Financing Receivable, Modifications [Line Items]
Post-Modification Recorded Investment	$ 468	$ 0	$ 468	$ 0
Number of Loans \| loans	2	0	2	0

Loans and Allowance for Credi55

Loans and Allowance for Credit Losses Narrative (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016	Dec. 31, 2016
Accounts, Notes, Loans and Financing Receivable [Line Items]
Provision for credit losses	$ 5,075	$ 4,141	$ 16,575	$ 8,182
Impaired loans with principal balances approximately in percentage			95.00%	73.00%
Loan to value ratio in the Corporation's policy	70.00%		70.00%
Recorded investment, with no related allowance	$ 65,106		$ 65,106		$ 60,457
Loans and Leases Receivable, Impaired, Commitment to Lend	3,800		3,800		$ 3,600
Minimum
Accounts, Notes, Loans and Financing Receivable [Line Items]
Minimum balance of loans evaluated individually for impairment			1,000
Impaired loans balances, real estate as collateral	$ 1,000		1,000
Maximum
Accounts, Notes, Loans and Financing Receivable [Line Items]
Minimum balance of loans evaluated individually for impairment			$ 1,000

Mortgage Servicing Rights Summa

Mortgage Servicing Rights Summary of Changes in Mortgage Servicing Rights (Details) - Residential Mortgage [Member] - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Amortized Cost:
Balance at beginning of period	$ 38,180	$ 39,874	$ 38,822	$ 40,944
Originations of mortgage servicing rights	1,333	1,499	3,719	3,927
Amortization	(1,639)	(2,064)	(4,667)	(5,562)
Balance at end of period	37,874	39,309	37,874	39,309
Valuation allowance:
Balance at beginning of period	0	(1,721)	(1,291)	0
(Additions) reductions to valuation allowance	0	1,280	(1,291)	3,001
Balance at end of period	0	(3,001)	0	(3,001)
Net MSRs at end of period	$ 37,874	$ 36,308	$ 37,874	$ 36,308

Mortgage Servicing Rights - Nar

Mortgage Servicing Rights - Narrative (Details) - Residential Mortgage [Member] - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016	Jun. 30, 2017	Dec. 31, 2016	Jun. 30, 2016	Dec. 31, 2015
Servicing Asset at Amortized Cost [Line Items]
(Additions) reductions to valuation allowance	$ 0	$ 1,280	$ (1,291)	$ 3,001
Valuation Allowance for Impairment of Recognized Servicing Assets, Balance	$ 0	$ 3,001	$ 0	$ 3,001	$ 0	$ 1,291	$ 1,721	$ 0

Stock-Based Compensation Compen

Stock-Based Compensation Compensation Expense and Related Tax Benefits (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Stock-based compensation expense	$ 1,570	$ 1,552	$ 3,339	$ 4,808
Tax benefit	(628)	(536)	(3,312)	(1,611)
Stock-based compensation expense, net of tax benefit	$ 942	$ 1,016	$ 27	$ 3,197

Stock-Based Compensation Narrat

Stock-Based Compensation Narrative (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Statement [Line Items]
Stock options terms (in years)			10 years
Stock-based compensation expense	$ 1,570	$ 1,552	$ 3,339	$ 4,808
Stock-based compensation expense, net of tax benefit	$ 942	$ 1,016	$ 27	$ 3,197
Directors' Plan [Member]
Statement [Line Items]
Shares reserved for future grants under the stock option and compensation plan	360,000		360,000
Employee Equity Plan [Member]
Statement [Line Items]
Awards vesting period (in years)			3 years
Shares reserved for future grants under the stock option and compensation plan	11,097,554		11,097,554

Employee Benefit Plans Summary

Employee Benefit Plans Summary of Pension Plan and Postretirement Plan Net Periodic Benefit Cost (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Pension Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost	$ 0	$ 172	$ 0	$ 516
Interest cost	830	880	2,490	2,640
Expected return on plan assets	(451)	(580)	(1,353)	(1,739)
Net amortization and deferral	663	605	1,989	1,815
Net periodic benefit	1,042	1,077	3,126	3,232
Other Postretirement Benefits Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Interest cost	17	21	51	64
Expected return on plan assets	0	0	0	(1)
Net accretion and deferral	(141)	(138)	(423)	(413)
Net periodic benefit	$ (124)	$ (117)	$ (372)	$ (350)

Derivative Financial Instrume61

Derivative Financial Instruments Narrative (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016	Dec. 31, 2016
Derivative [Line Items]
Assets	$ 20,062,860		$ 20,062,860		$ 18,944,247
Foreign currency open position	500		500
Mortgage Loans Held For Sale [Member]
Derivative [Line Items]
Gain (loss) in fair values of mortgage loans held for sale	$ (120)	$ (360)	$ 445	$ 504
Fulton Bank Subsidiary [Member]
Derivative [Line Items]
Assets					$ 10,000,000

Derivative Financial Instrume62

Derivative Financial Instruments Notional Amounts and Fair Values of Derivative Financial Instruments (Details) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Derivative [Line Items]
Derivative asset, fair value	$ 48,003	$ 41,636
Derivative liability, fair value	(41,625)	(41,842)
Derivative asset (liability), net	7,592	2,824
Interest Rate Lock Commitments [Member]
Derivative [Line Items]
Derivative asset, notional amount	141,250	87,119
Derivative liability, notional amount	5,530	18,239
Derivative asset, fair value	1,283	863
Derivative liability, fair value	(16)	(227)
Derivative asset (liability), net	1,267	636
Forward Commitments [Member]
Derivative [Line Items]
Derivative asset, notional amount	27,562	70,031
Derivative liability, notional amount	77,000	19,964
Derivative asset, fair value	48	2,223
Derivative liability, fair value	(207)	(112)
Derivative asset (liability), net	(159)	2,111
Interest Rate Swap with Customer [Member]
Derivative [Line Items]
Derivative asset, notional amount	1,329,394	876,744
Derivative liability, notional amount	578,120	583,060
Derivative asset, fair value	34,028	24,397
Derivative liability, fair value	(13,682)	(16,998)
Derivative asset (liability), net	20,346	7,399
Interest Rate Swap With Counterparty [Member]
Derivative [Line Items]
Derivative asset, notional amount	578,120	583,060
Derivative liability, notional amount	1,329,394	876,744
Derivative asset, fair value	13,682	16,998
Derivative liability, fair value	(27,663)	(24,397)
Derivative asset (liability), net	(13,981)	(7,399)
Centrally Cleared Interest Rate Swap with Counterparty [Member]
Derivative [Line Items]
Derivative liability, notional amount	324,300
Derivative liability, fair value	0
Foreign Exchange Contracts With Customer [Member]
Derivative [Line Items]
Derivative asset, notional amount	5,912	11,674
Derivative liability, notional amount	5,473	4,659
Derivative asset, fair value	332	504
Derivative liability, fair value	(226)	(221)
Derivative asset (liability), net	106	283
Foreign Exchange Contracts With Correspondent Banks [Member]
Derivative [Line Items]
Derivative asset, notional amount	8,978	7,040
Derivative liability, notional amount	4,420	12,869
Derivative asset, fair value	293	241
Derivative liability, fair value	(280)	(447)
Derivative asset (liability), net	$ 13	$ (206)

Derivative Financial Instrume63

Derivative Financial Instruments Fair Value Gains and Losses on Derivative Financial Instruments (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Derivative [Line Items]
Net fair value gains on derivative financial instruments	$ 1,123	$ 929	$ 4,768	$ 769
Interest rate lock with customers [Member]
Derivative [Line Items]
Net fair value gains on derivative financial instruments	(59)	178	631	1,922
Forward Commitments [Member]
Derivative [Line Items]
Net fair value gains on derivative financial instruments	(48)	970	(2,270)	(1,042)
Interest Rate Swap with Customer [Member]
Derivative [Line Items]
Net fair value gains on derivative financial instruments	(47)	(1,948)	12,947	48,052
Interest Rate Swap with Counterparty [Member]
Derivative [Line Items]
Net fair value gains on derivative financial instruments	1,248	1,948	(6,582)	(48,052)
Foreign Exchange Contracts With Customer [Member]
Derivative [Line Items]
Net fair value gains on derivative financial instruments	140	47	(177)	502
Foreign Exchange Contracts With Correspondent Banks [Member]
Derivative [Line Items]
Net fair value gains on derivative financial instruments	$ (111)	$ (266)	$ 219	$ (613)

Derivative Financial Instrume64

Derivative Financial Instruments Summary of Mortgage Loans Held For Sale (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016	Dec. 31, 2016
Fair Value, Option, Quantitative Disclosures [Line Items]
Loans Held-for-sale, Mortgages	$ 23,049		$ 23,049		$ 28,697
Mortgage Loans Held For Sale [Member]
Fair Value, Option, Quantitative Disclosures [Line Items]
Fair Value, Option, Changes in Fair Value, Gain (Loss)	(120)	$ (360)	445	$ 504
Cost \| Mortgage Loans Held For Sale [Member]
Fair Value, Option, Quantitative Disclosures [Line Items]
Loans Held-for-sale, Mortgages	22,615		22,615		28,708
Fair value \| Mortgage Loans Held For Sale [Member]
Fair Value, Option, Quantitative Disclosures [Line Items]
Loans Held-for-sale, Mortgages	$ 23,049		$ 23,049		$ 28,697

Derivative Financial Instrume65

Derivative Financial Instruments Offsetting Derivative Assets and Liabilities (Details) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Offsetting Assets [Line Items]
Derivative asset, fair value	$ 48,003	$ 41,636
Derivative, Collateral, Obligation to Return Securities	14,443	15,358
Derivative, Collateral, Obligation to Return Cash	0	0
Net Amount	33,560	26,278
Derivative liability, gross liability	41,625	41,842
Derivative liability, Collateral, Right to Reclaim Securities	(14,443)	(15,358)
Derivative liability, Collateral, Right to Reclaim Cash	(15,520)	(4,216)
Derivative liability, Net Amount	11,662	22,268
Interest Rate Swap [Member]
Offsetting Assets [Line Items]
Derivative asset, fair value	47,710	41,395
Derivative, Collateral, Obligation to Return Securities	14,163	15,117
Derivative, Collateral, Obligation to Return Cash	0	0
Net Amount	33,547	26,278
Derivative liability, gross liability	41,345	41,395
Derivative liability, Collateral, Right to Reclaim Securities	(14,163)	(15,117)
Derivative liability, Collateral, Right to Reclaim Cash	(15,520)	(4,010)
Derivative liability, Net Amount	11,662	22,268
Foreign Exchange Contract [Member]
Offsetting Assets [Line Items]
Derivative asset, fair value	293	241
Derivative, Collateral, Obligation to Return Securities	280	241
Derivative, Collateral, Obligation to Return Cash	0	0
Net Amount	13	0
Derivative liability, gross liability	280	447
Derivative liability, Collateral, Right to Reclaim Securities	(280)	(241)
Derivative liability, Collateral, Right to Reclaim Cash	0	(206)
Derivative liability, Net Amount	$ 0	$ 0

Commitments and Contingencies O

Commitments and Contingencies Outstanding Commitments to Extend Credit and Letters of Credit (Details) - Reserve for Off-balance Sheet Activities [Member] - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Commitments to Extend Credit [Member]
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Valuation allowances and reserves, balance	$ 6,418,318	$ 6,075,567
Standby Letters of Credit [Member]
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Valuation allowances and reserves, balance	331,096	356,359
Commercial Letters of Credit [Member]
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Valuation allowances and reserves, balance	$ 41,819	$ 38,901

Commitments and Contingencies -

Commitments and Contingencies - Narrative (Details) $ in Thousands	Mar. 31, 2016USD ($)defendantplaintiff	Sep. 30, 2017USD ($)	Dec. 31, 2016USD ($)
Loss Contingencies [Line Items]
Residential mortgage principal balance repurchase request received		$ 543	$ 543
Residential mortgage principal balance FHLB credit enhancement		89,000
Residential mortgage repurchase reserves FHLB credit enhancement		1,300	1,700
Agostino, et al. v. Ameriprise Financial Services, Inc [Member]
Loss Contingencies [Line Items]
Number of unrelated defendants \| defendant	2
Amount alleged in damages	$ 11,300
Agostino, et al. v. Ameriprise Financial Services, Inc [Member] \| Pending Litigation [Member]
Loss Contingencies [Line Items]
Number of plaintiffs \| plaintiff	67
Reserve for Off-balance Sheet Activities [Member] \| Residential Mortgage [Member]
Loss Contingencies [Line Items]
Valuation allowances and reserves, balance		$ 2,100	$ 2,500

Fair Value Measurements Assets

Fair Value Measurements Assets and Liabilities Measured at Fair Value on a Recurring Basis (Details) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Estimated Fair Value	$ 2,548,457
Available-for-sale Securities, Fair Value Disclosure	2,561,516	$ 2,559,227
Fair Value, Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Mortgages Held-for-sale, Fair Value Disclosure	23,049	28,697
Available-for-sale Securities, Fair Value Disclosure	2,561,516	2,559,227
Other Assets, Fair Value Disclosure	67,783	61,592
Assets, Fair Value Disclosure	2,652,348	2,649,516
Liabilities, Fair Value Disclosure	60,176	58,766
Pooled Trust Preferred Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Estimated Fair Value	422	422
Equity Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale Securities, Fair Value Disclosure	13,059	24,526
Equity Securities [Member] \| Fair Value, Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale Securities, Fair Value Disclosure	13,059	24,526
U.S. Government-Sponsored Agency Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale Securities, Fair Value Disclosure	6,015	134
U.S. Government-Sponsored Agency Securities [Member] \| Fair Value, Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale Securities, Fair Value Disclosure	6,015	134
State and Municipal Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale Securities, Fair Value Disclosure	413,913	391,641
State and Municipal Securities [Member] \| Fair Value, Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale Securities, Fair Value Disclosure	413,913	391,641
Corporate Debt Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Estimated Fair Value	92,977	109,409
Available-for-sale Securities, Fair Value Disclosure	92,977	109,409
Corporate Debt Securities [Member] \| Fair Value, Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale Securities, Fair Value Disclosure	92,977	109,409
Collateralized Mortgage Obligations [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale Securities, Fair Value Disclosure	593,678	593,860
Collateralized Mortgage Obligations [Member] \| Fair Value, Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale Securities, Fair Value Disclosure	593,678	593,860
Mortgage-Backed Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale Securities, Fair Value Disclosure	1,182,086	1,317,838
Mortgage-Backed Securities [Member] \| Fair Value, Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale Securities, Fair Value Disclosure	1,182,086	1,317,838
Commercial Mortgage Backed Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale Securities, Fair Value Disclosure	161,632	24,563
Commercial Mortgage Backed Securities [Member] \| Fair Value, Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale Securities, Fair Value Disclosure	161,632	24,563
Auction Rate Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale Securities, Fair Value Disclosure	98,156	97,256
Auction Rate Securities [Member] \| Fair Value, Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale Securities, Fair Value Disclosure	98,156	97,256
Other Equity Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale Securities, Equity Securities	1,000	1,000
Fair Value, Inputs, Level 1 [Member] \| Fair Value, Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Mortgages Held-for-sale, Fair Value Disclosure	0	0
Available-for-sale Securities, Fair Value Disclosure	13,059	24,526
Other Assets, Fair Value Disclosure	18,742	17,111
Assets, Fair Value Disclosure	31,801	41,637
Liabilities, Fair Value Disclosure	18,607	17,032
Fair Value, Inputs, Level 1 [Member] \| Equity Securities [Member] \| Fair Value, Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale Securities, Fair Value Disclosure	13,059	24,526
Fair Value, Inputs, Level 1 [Member] \| U.S. Government-Sponsored Agency Securities [Member] \| Fair Value, Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale Securities, Fair Value Disclosure	0	0
Fair Value, Inputs, Level 1 [Member] \| State and Municipal Securities [Member] \| Fair Value, Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale Securities, Fair Value Disclosure	0	0
Fair Value, Inputs, Level 1 [Member] \| Corporate Debt Securities [Member] \| Fair Value, Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale Securities, Fair Value Disclosure	0	0
Fair Value, Inputs, Level 1 [Member] \| Collateralized Mortgage Obligations [Member] \| Fair Value, Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale Securities, Fair Value Disclosure	0	0
Fair Value, Inputs, Level 1 [Member] \| Mortgage-Backed Securities [Member] \| Fair Value, Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale Securities, Fair Value Disclosure	0	0
Fair Value, Inputs, Level 1 [Member] \| Commercial Mortgage Backed Securities [Member] \| Fair Value, Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale Securities, Fair Value Disclosure	0	0
Fair Value, Inputs, Level 1 [Member] \| Auction Rate Securities [Member] \| Fair Value, Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale Securities, Fair Value Disclosure	0	0
Fair Value, Inputs, Level 1 [Member] \| Other Equity Securities [Member] \| Fair Value, Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale Securities, Equity Securities	1,000	1,000
Fair Value, Inputs, Level 2 [Member] \| Fair Value, Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Mortgages Held-for-sale, Fair Value Disclosure	23,049	28,697
Available-for-sale Securities, Fair Value Disclosure	2,447,079	2,434,573
Other Assets, Fair Value Disclosure	49,041	44,481
Assets, Fair Value Disclosure	2,519,169	2,507,751
Liabilities, Fair Value Disclosure	41,569	41,734
Fair Value, Inputs, Level 2 [Member] \| Other Corporate Debt [Member] \| Fair Value, Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Estimated Fair Value	4,000	4,000
Fair Value, Inputs, Level 2 [Member] \| Financial Institutions Subordinated Debt [Member] \| Fair Value, Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Estimated Fair Value	50,300	65,200
Fair Value, Inputs, Level 2 [Member] \| Equity Securities [Member] \| Fair Value, Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale Securities, Fair Value Disclosure	0	0
Fair Value, Inputs, Level 2 [Member] \| U.S. Government-Sponsored Agency Securities [Member] \| Fair Value, Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale Securities, Fair Value Disclosure	6,015	134
Fair Value, Inputs, Level 2 [Member] \| State and Municipal Securities [Member] \| Fair Value, Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale Securities, Fair Value Disclosure	413,913	391,641
Fair Value, Inputs, Level 2 [Member] \| Corporate Debt Securities [Member] \| Fair Value, Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale Securities, Fair Value Disclosure	89,755	106,537
Fair Value, Inputs, Level 2 [Member] \| Collateralized Mortgage Obligations [Member] \| Fair Value, Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale Securities, Fair Value Disclosure	593,678	593,860
Fair Value, Inputs, Level 2 [Member] \| Mortgage-Backed Securities [Member] \| Fair Value, Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale Securities, Fair Value Disclosure	1,182,086	1,317,838
Fair Value, Inputs, Level 2 [Member] \| Commercial Mortgage Backed Securities [Member] \| Fair Value, Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale Securities, Fair Value Disclosure	161,632	24,563
Fair Value, Inputs, Level 2 [Member] \| Auction Rate Securities [Member] \| Fair Value, Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale Securities, Fair Value Disclosure	0	0
Fair Value, Inputs, Level 3 [Member] \| Fair Value, Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Mortgages Held-for-sale, Fair Value Disclosure	0	0
Available-for-sale Securities, Fair Value Disclosure	101,378	100,128
Other Assets, Fair Value Disclosure	0	0
Assets, Fair Value Disclosure	101,378	100,128
Liabilities, Fair Value Disclosure	0	0
Fair Value, Inputs, Level 3 [Member] \| Pooled Trust Preferred Securities [Member] \| Fair Value, Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Estimated Fair Value	422	422
Fair Value, Inputs, Level 3 [Member] \| Equity Securities [Member] \| Fair Value, Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale Securities, Fair Value Disclosure	0	0
Fair Value, Inputs, Level 3 [Member] \| U.S. Government-Sponsored Agency Securities [Member] \| Fair Value, Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale Securities, Fair Value Disclosure	0	0
Fair Value, Inputs, Level 3 [Member] \| State and Municipal Securities [Member] \| Fair Value, Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale Securities, Fair Value Disclosure	0	0
Fair Value, Inputs, Level 3 [Member] \| Corporate Debt Securities [Member] \| Fair Value, Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale Securities, Fair Value Disclosure	3,222	2,872
Fair Value, Inputs, Level 3 [Member] \| Collateralized Mortgage Obligations [Member] \| Fair Value, Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale Securities, Fair Value Disclosure	0	0
Fair Value, Inputs, Level 3 [Member] \| Mortgage-Backed Securities [Member] \| Fair Value, Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale Securities, Fair Value Disclosure	0	0
Fair Value, Inputs, Level 3 [Member] \| Commercial Mortgage Backed Securities [Member] \| Fair Value, Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale Securities, Fair Value Disclosure	0	0
Fair Value, Inputs, Level 3 [Member] \| Auction Rate Securities [Member] \| Fair Value, Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale Securities, Fair Value Disclosure	$ 98,156	$ 97,256

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 [Member] - Fair Value, Inputs, Level 3 [Member] - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Pooled Trust Preferred Securities [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Balance, beginning of period	$ 422	$ 706	$ 422	$ 706
Unrealized adjustment to fair value	0	0	0	0
(Premium amortization) discount accretion	0	0	0	0
Balance, end of period	422	706	422	706
Single-issuer Trust Preferred Securities [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Balance, beginning of period	2,775	2,425	2,450	2,630
Unrealized adjustment to fair value	(28)	7	291	(204)
(Premium amortization) discount accretion	3	3	9	9
Balance, end of period	2,750	2,435	2,750	2,435
Auction Rate Securities [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Balance, beginning of period	97,923	97,886	97,256	98,059
Unrealized adjustment to fair value	233	(318)	705	(668)
(Premium amortization) discount accretion	0	158	195	335
Balance, end of period	$ 98,156	$ 97,726	$ 98,156	$ 97,726

Fair Value Measurements Asset70

Fair Value Measurements Assets Measured at Fair Value on a Nonrecurring Basis (Details) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
OREO	$ 10,542	$ 12,815
Fair Value, Measurements, Nonrecurring [Member] \| Fair Value, Inputs, Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Net loans	140,779	132,576
OREO	10,542	12,815
MSRs	37,874	37,532
Assets, Fair Value Disclosure	$ 189,195	$ 182,923

Fair Value Measurements Details

Fair Value Measurements Details of Book Value and Fair Value of Financial Instruments (Details) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Fair Value, Balance Sheet Grouping, FinancialStatement Captions[Line Items]
Available for sale investment securities	$ 2,561,516	$ 2,559,227
Reported Value Measurement [Member]
Fair Value, Balance Sheet Grouping, FinancialStatement Captions[Line Items]
Cash and due from banks	99,803	118,763
Interest-bearing deposits with other banks	582,845	233,763
Federal Reserve Bank and Federal Home Loan Bank stock	62,951	57,489
Loans held for sale	23,049	28,697
Available for sale investment securities	2,561,516	2,559,227
Net Loans	15,314,654	14,530,593
Accrued interest receivable	50,082	46,294
Other financial assets	219,434	206,132
Demand and savings deposits	13,274,319	12,259,622
Brokered Deposits	109,936	0
Time deposits	2,757,525	2,753,242
Short-term borrowings	298,751	541,317
Accrued interest payable	10,568	9,632
Other financial liabilities	234,160	216,080
Federal Home Loan Bank advances and other long-term debt	1,038,159	929,403
Estimate of Fair Value Measurement [Member]
Fair Value, Balance Sheet Grouping, FinancialStatement Captions[Line Items]
Cash and due from banks	99,803	118,763
Interest-bearing deposits with other banks	582,845	233,763
Federal Reserve Bank and Federal Home Loan Bank stock	62,951	57,489
Loans held for sale	23,049	28,697
Available for sale investment securities	2,561,516	2,559,227
Net Loans	15,086,654	14,387,454
Accrued interest receivable	50,082	46,294
Other financial assets	219,434	206,132
Demand and savings deposits	13,274,319	12,259,622
Brokered Deposits	109,936	0
Time deposits	2,759,913	2,769,757
Short-term borrowings	298,751	541,317
Accrued interest payable	10,568	9,632
Other financial liabilities	234,160	216,080
Federal Home Loan Bank advances and other long-term debt	$ 1,035,053	$ 928,167

Fair Value Measurements Narrati

Fair Value Measurements Narrative (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
	Sep. 30, 2017	Sep. 30, 2017	Dec. 31, 2016
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities valued by the pricing service	80.00%	80.00%
Researched securities to reconcile the difference	5.00%	5.00%
Corporate debt securities	$ 2,548,457	$ 2,548,457
Significant input, assumed market return to liquidity (years)	5 years
Other real estate owned (OREO)	$ 10,542	$ 10,542	$ 12,815
Minimum
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Weighted average annual constant prepayment rate		12.40%
Weighted average discount rate		9.50%
Equity Securities Financial Institution [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities, equity securities	12,100	$ 12,100	23,500
Other Equity Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities, equity securities	1,000	1,000	1,000
Corporate Debt Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Corporate debt securities	92,977	92,977	109,409
Single-issuer Trust Preferred Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Corporate debt securities	38,251	38,251	39,829
Pooled Trust Preferred Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Corporate debt securities	422	422	422
Fair Value, Measurements, Recurring [Member] \| Single-issuer Trust Preferred Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Corporate debt securities	38,300	38,300	39,800
Fair Value, Measurements, Recurring [Member] \| Fair Value, Inputs, Level 1 [Member] \| Trust for Benefit of Employees [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Other financial assets	18,100	18,100	16,400
Fair Value, Measurements, Recurring [Member] \| Fair Value, Inputs, Level 1 [Member] \| Foreign Exchange Contract [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Other financial assets	625	625	745
Fair Value, Measurements, Recurring [Member] \| Fair Value, Inputs, Level 1 [Member] \| Trust for Benefit of Employees [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Other financial liabilities	18,100	18,100	16,400
Fair Value, Measurements, Recurring [Member] \| Fair Value, Inputs, Level 1 [Member] \| Foreign Exchange Contract [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Other financial liabilities	506	506	668
Fair Value, Measurements, Recurring [Member] \| Fair Value, Inputs, Level 1 [Member] \| Equity Securities Financial Institution [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities, equity securities	12,100	12,100	23,500
Fair Value, Measurements, Recurring [Member] \| Fair Value, Inputs, Level 1 [Member] \| Other Equity Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities, equity securities	1,000	1,000	1,000
Fair Value, Measurements, Recurring [Member] \| Fair Value, Inputs, Level 2 [Member] \| Forward Contracts [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Other financial assets	1,300	1,300	3,100
Other financial liabilities	223	223	339
Fair Value, Measurements, Recurring [Member] \| Fair Value, Inputs, Level 2 [Member] \| Interest Rate Swap [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Other financial assets	47,700	47,700	41,400
Other financial liabilities	41,300	41,300	41,400
Fair Value, Measurements, Recurring [Member] \| Fair Value, Inputs, Level 2 [Member] \| Financial Institutions Subordinated Debt [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Corporate debt securities	50,300	50,300	65,200
Fair Value, Measurements, Recurring [Member] \| Fair Value, Inputs, Level 2 [Member] \| Single-issuer Trust Preferred Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Corporate debt securities	35,500	35,500	37,300
Fair Value, Measurements, Recurring [Member] \| Fair Value, Inputs, Level 2 [Member] \| Other Corporate Debt [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Corporate debt securities	4,000	4,000	4,000
Fair Value, Measurements, Recurring [Member] \| Fair Value, Inputs, Level 3 [Member] \| Single-issuer Trust Preferred Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Corporate debt securities	2,800	2,800	2,500
Fair Value, Measurements, Recurring [Member] \| Fair Value, Inputs, Level 3 [Member] \| Pooled Trust Preferred Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Corporate debt securities	422	422	422
Fair Value, Measurements, Nonrecurring [Member] \| Fair Value, Inputs, Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Other real estate owned (OREO)	10,542	10,542	12,815
Net MSRs at end of period	$ 37,874	$ 37,874	$ 37,532