Fulton Financial (FULT) 10-Q 8 Nov 19 2019 Q3 Quarterly report Financial data

Cover Page

Cover Page - shares	9 Months Ended
	Sep. 30, 2019	Oct. 31, 2019
Cover page.
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Sep. 30, 2019
Document Transition Report	false
Entity File Number	0-10587
Entity Registrant Name	FULTON FINANCIAL CORP
Entity Incorporation, State or Country Code	PA
Entity Tax Identification Number	23-2195389
Entity Address, Address Line One	One Penn Square
Entity Address, Address Line Two	P.O. Box 4887
Entity Address, City or Town	Lancaster,
Entity Address, State or Province	PA
Entity Address, Postal Zip Code	17604
City Area Code	717
Local Phone Number	291-2411
Title of 12(b) Security	Common Stock, par value $2.50
Trading Symbol	FULT
Security Exchange Name	NASDAQ
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Large Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding		164,122,000
Entity Central Index Key	0000700564
Current Fiscal Year End Date	--12-31
Document Fiscal Year Focus	2019
Document Fiscal Period Focus	Q3
Amendment Flag	false

Consolidated Balance Sheets

Consolidated Balance Sheets - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
ASSETS
Cash and due from banks	$ 120,671	$ 103,436
Interest-bearing deposits with other banks	477,942	342,251
Cash and cash equivalents	598,613	445,687
Federal Reserve Bank and Federal Home Loan Bank stock	94,557	79,283
Loans held for sale	33,945	27,099
Available for sale, at estimated fair value	2,315,541	2,080,294
Held to maturity, at amortized cost	390,069	606,679
Loans and leases, net of unearned income	16,686,866	16,165,800
Less: Allowance for loan and lease losses	(166,135)	(160,537)
Net loans and leases	16,520,731	16,005,263
Premises and equipment	237,344	234,529
Accrued interest receivable	60,447	58,879
Goodwill and intangible assets	534,178	531,556
Other assets	918,193	612,883
Total Assets	21,703,618	20,682,152
LIABILITIES
Noninterest-bearing	4,240,478	4,310,105
Interest-bearing	13,102,239	12,066,054
Total Deposits	17,342,717	16,376,159
Short-term borrowings	832,860	754,777
Accrued interest payable	9,622	10,529
Other liabilities	467,689	300,835
Federal Home Loan Bank advances and long-term debt	726,714	992,279
Total Liabilities	19,379,602	18,434,579
SHAREHOLDERS’ EQUITY
Common stock, $2.50 par value, 600 million shares authorized, 222.4 million shares issued in 2019 and 221.8 million issued in 2018	555,888	554,377
Additional paid-in capital	1,496,657	1,489,703
Retained earnings	1,059,517	946,032
Accumulated other comprehensive gain (loss)	6,081	(59,063)
Treasury stock, at cost, 58.3 million shares in 2019 and 51.6 million shares in 2018	(794,127)	(683,476)
Total Shareholders’ Equity	2,324,016	2,247,573
Total Liabilities and Shareholders’ Equity	$ 21,703,618	$ 20,682,152

Consolidated Balance Sheets (Pa

Consolidated Balance Sheets (Parenthetical) - $ / shares	Sep. 30, 2019	Dec. 31, 2018
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)	222,400,000	221,800,000
Treasury stock, shares (in shares)	58,300,000	51,600,000

Consolidated Statements of Inco

Consolidated Statements of Income - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
INTEREST INCOME
Loans and leases, including fees	$ 186,001	$ 175,068	$ 558,055	$ 503,029
Investment securities:
Taxable	15,565	13,956	46,935	41,039
Tax-exempt	3,673	3,035	10,222	8,933
Loans held for sale	466	388	1,056	888
Other interest income	2,709	1,601	6,879	4,016
Total Interest Income	208,414	194,048	623,147	557,905
INTEREST EXPENSE
Deposits	35,737	23,819	97,974	59,553
Short-term borrowings	4,156	2,002	12,200	7,079
Federal Home Loan Bank advances and long-term debt	7,260	8,100	23,854	23,761
Total Interest Expense	47,153	33,921	134,028	90,393
Net Interest Income	161,260	160,127	489,119	467,512
Provision for credit losses	2,170	1,620	12,295	38,707
Net Interest Income After Provision for Credit Losses	159,090	158,507	476,824	428,805
NON-INTEREST INCOME
Non-interest income before investment securities gains	55,321	51,019	156,146	145,965
Investment securities gains, net	4,492	14	4,733	37
Total Non-Interest Income	59,813	51,033	160,879	146,002
NON-INTEREST EXPENSE
Salaries and employee benefits	78,211	76,770	234,959	227,457
Net occupancy	12,368	12,578	39,746	38,970
Data processing and software	11,590	10,157	33,211	31,083
Prepayment penalty on FHLB advances	4,326	0	4,326	0
Other outside services	12,163	9,122	31,774	24,814
Amortization of tax credit investments	1,533	1,637	4,516	4,911
Intangible amortization	1,071	0	1,285	0
Professional fees	3,331	3,427	10,261	10,615
Marketing	3,459	3,000	10,100	9,968
FDIC insurance	239	2,814	5,603	8,430
Taxes, Other	2,523	2,707	7,005	7,463
Marketing	3,322	2,692	8,345	7,277
Other	12,634	10,509	37,631	34,431
Total Non-Interest Expense	146,770	135,413	428,762	405,419
Income Before Income Taxes	72,133	74,127	208,941	169,388
Income taxes	10,025	8,494	30,391	19,078
Net Income	$ 62,108	$ 65,633	$ 178,550	$ 150,310
PER SHARE:
Net Income (Basic) (in dollars per share)	$ 0.38	$ 0.37	$ 1.06	$ 0.86
Net Income (Diluted) (in dollars per share)	0.37	0.37	1.06	0.85
Cash Dividends (in dollars per share)	$ 0.13	$ 0.12	$ 0.39	$ 0.36
Investment management and trust services
NON-INTEREST INCOME
Non-interest income before investment securities gains	$ 13,867	$ 13,066	$ 41,259	$ 38,740
Other service charges and fees
NON-INTEREST INCOME
Non-interest income before investment securities gains	18,284	17,540	51,489	47,928
Service charges on deposit accounts
NON-INTEREST INCOME
Non-interest income before investment securities gains	13,333	12,665	37,077	36,005
Mortgage banking income
NON-INTEREST INCOME
Non-interest income before investment securities gains	6,658	4,896	18,023	14,252
Other
NON-INTEREST INCOME
Non-interest income before investment securities gains	$ 3,179	$ 2,852	$ 8,298	$ 9,040

Consolidated Statements of Comp

Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Statement of Comprehensive Income [Abstract]
Net Income	$ 62,108	$ 65,633	$ 178,550	$ 150,310
Other Comprehensive Income (Loss), net of tax:
Unrealized gain (loss) on securities	18,029	(12,531)	63,244	(46,806)
Reclassification adjustment for securities gains included in net income	(3,498)	(11)	(3,686)	(30)
Amortization of net unrealized losses on available for sale securities transferred to held to maturity	3,430	791	5,425	791
Non-credit related unrealized (loss) gain on other-than-temporarily impaired debt securities	0	0	(682)	232
Amortization of net unrecognized pension and postretirement income	277	369	843	1,248
Other Comprehensive Income (Loss)	18,238	(11,382)	65,144	(44,565)
Total Comprehensive Income	$ 80,346	$ 54,251	$ 243,694	$ 105,745

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 (Loss) [Member]	Treasury Stock [Member]
Beginning Balance at Dec. 31, 2017		$ 2,229,857	$ 552,232	$ 1,478,389	$ 821,619	$ (32,974)	$ (589,409)
Beginning Balance (in shares) at Dec. 31, 2017			175,170
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net Income		150,310			150,310
Other comprehensive income		(44,565)				(44,565)
Stock issued (in shares)			833
Stock issued		4,748	$ 1,936	2,773			39
Stock-based compensation awards (in shares)			16
Stock-based compensation awards		6,007	$ 40	5,967
Reclassification of stranded tax effects	[1]				7,101	(7,101)
Common stock cash dividends		(63,343)			(63,343)
Ending Balance at Sep. 30, 2018		2,283,014	$ 554,208	1,487,129	915,687	(84,640)	(589,370)
Ending Balance (in shares) at Sep. 30, 2018			176,019
Beginning Balance at Jun. 30, 2018		2,245,785	$ 553,958	1,484,185	871,192	(73,258)	(590,292)
Beginning Balance (in shares) at Jun. 30, 2018			175,847
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net Income		65,633			65,633
Other comprehensive income		(11,382)				(11,382)
Stock issued (in shares)			147
Stock issued		2,231	$ 188	1,121			922
Stock-based compensation awards (in shares)			25
Stock-based compensation awards		1,885	$ 62	1,823
Common stock cash dividends		(21,138)			(21,138)
Ending Balance at Sep. 30, 2018		2,283,014	$ 554,208	1,487,129	915,687	(84,640)	(589,370)
Ending Balance (in shares) at Sep. 30, 2018			176,019
Beginning Balance at Dec. 31, 2018		2,247,573	$ 554,377	1,489,703	946,032	(59,063)	(683,476)
Beginning Balance (in shares) at Dec. 31, 2018			170,184
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net Income		178,550
Other comprehensive income		65,144				65,144
Stock issued (in shares)			701
Stock issued		3,813	$ 1,511	1,496			806
Stock-based compensation awards (in shares)
Stock-based compensation awards		5,458		5,458
Acquisition of treasury stock (in shares)			(6,849)
Acquisition of treasury stock (in shares)		(111,457)					(111,457)
Common stock cash dividends		(65,065)			(65,065)
Ending Balance at Sep. 30, 2019		2,324,016	$ 555,888	1,496,657	1,059,517	6,081	(794,127)
Ending Balance (in shares) at Sep. 30, 2019			164,036
Beginning Balance at Jun. 30, 2019		2,308,798	$ 555,690	1,493,628	1,018,736	(12,157)	(747,099)
Beginning Balance (in shares) at Jun. 30, 2019			166,903
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net Income		62,108
Other comprehensive income		18,238				18,238
Stock issued (in shares)			157
Stock issued		2,160	$ 198	919			1,043
Stock-based compensation awards (in shares)
Stock-based compensation awards		2,110		2,110
Acquisition of treasury stock (in shares)			(3,024)
Acquisition of treasury stock (in shares)		(48,071)					(48,071)
Common stock cash dividends		(21,327)			(21,327)
Ending Balance at Sep. 30, 2019		$ 2,324,016	$ 555,888	$ 1,496,657	$ 1,059,517	$ 6,081	$ (794,127)
Ending Balance (in shares) at Sep. 30, 2019			164,036
[1]	The Corporation adopted the Accounting Standards Codification ("ASC") Update 2018-02, "Income Statement - Reporting Comprehensive Income (Topic 220): Reclassification of Certain Tax Effects from Accumulated Other Comprehensive Income" in the first quarter of 2018 which permitted a reclassification from accumulated other comprehensive income ("AOCI") to retained earnings of the stranded tax effects resulting from the Tax Cuts and Jobs Act of 2017, which changed the federal corporate income tax rate from 35% to 21%. As a result, $7.1 million of stranded tax effects were reclassified from AOCI to retained earnings during the first quarter of 2018.

Consolidated Statements of Sh_2

Consolidated Statements of Shareholders' Equity (Parenthetical) - $ / shares	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Statement of Stockholders' Equity [Abstract]
Cash dividends per share	$ 0.13	$ 0.12	$ 0.39	$ 0.36

Consolidated Statements of Cash

Consolidated Statements of Cash Flows - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018
CASH FLOWS FROM OPERATING ACTIVITIES:
Net Income	$ 178,550	$ 150,310
Adjustments to reconcile net income to net cash provided by operating activities:
Provision for credit losses	12,295	38,707
Depreciation and amortization of premises and equipment	20,984	21,423
Amortization of tax credit investments	24,608	25,093
Net amortization of investment securities premiums	6,861	6,153
Investment securities gains, net	(4,733)	(37)
Gain on sales of mortgage loans held for sale	(13,822)	(10,158)
Proceeds from sales of mortgage loans held for sale	672,314	608,561
Originations of mortgage loans held for sale	(665,338)	(594,398)
Amortization of intangible assets	1,285	0
Amortization of issuance costs and discounts on long-term debt	632	606
Stock-based compensation	5,458	6,007
Other changes, net	(195,560)	(19,576)
Total adjustments	(135,016)	82,381
Net cash provided by operating activities	43,534	232,691
CASH FLOWS FROM INVESTING ACTIVITIES:
Proceeds from sales of securities available for sale	697,634	54,638
Proceeds from principal repayments and maturities of securities held to maturity	62,320	15,475
Proceeds from principal repayments and maturities of securities available for sale	169,380	237,624
Purchase of securities available for sale	(838,634)	(459,799)
Purchase of Federal Reserve Bank and Federal Home Loan Bank stock	(15,274)	(5,165)
Net increase in loans and leases	(529,974)	(200,526)
Net change in tax credit investments	(23,799)	(29,857)
Net cash paid for acquisition	(3,907)	0
Net change in tax credit investments	14,715	47,096
Net cash used in by investing activities	(496,969)	(434,706)
CASH FLOWS FROM FINANCING ACTIVITIES:
Net increase in demand and savings deposits	627,958	342,080
Net increase in time deposits	338,600	109,402
Increase (decrease) in short-term borrowings	78,083	(131,959)
Additions to long-term debt	305,000	50,000
Repayments of long-term debt	(571,197)	(100,122)
Net proceeds from issuance of common stock	3,813	4,748
Dividends paid	(64,439)	(61,539)
Acquisition of treasury stock	(111,457)	0
Net cash provided by financing activities	606,361	212,610
Net Increase in Cash and Cash Equivalents	152,926	10,595
Cash and Cash Equivalents at Beginning of Period	445,687	402,096
Cash and Cash Equivalents at End of Period	598,613	412,691
Cash paid during the period for:
Interest	134,935	88,559
Income taxes	7,966	8,178
Transfer of available for sale securities to held to maturity securities	0	641,672
Transfer of held to maturity securities to available for sale securities	$ 158,898	$ 0

Basis of Presentation

Basis of Presentation	9 Months Ended
	Sep. 30, 2019
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 ("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 GAAP for complete financial statements. The preparation of financial statements in accordance with 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, 2018 . Operating results for the three and nine months ended September 30, 2019 are not necessarily indicative of the results that may be expected for the year ending December 31, 2019 . The Corporation evaluates subsequent events through the date of filing of this Form 10-Q with the U.S. Securities and Exchange Commission ("SEC"). Recently Adopted Accounting Standards ASC Update 2016-02 - In February 2016, the Financial Accounting Standards Board ("FASB") issued ASC Update 2016-02, "Leases (Topic 842)." This standards update requires a lessee to recognize for all leases with an initial term greater than twelve months: (1) a "right-of-use" ("ROU") asset, which is an asset that represents the lessee’s right to use, or control the use of, a specified asset for the lease term; and (2) a lease liability, which is a lessee’s obligation to make lease payments arising from a lease, each measured on a discounted basis. This standards update is effective for interim and annual reporting periods beginning after December 15, 2018, with early adoption permitted. The Corporation adopted ASC Update 2016-02 in the first quarter of 2019 using the alternative transition method, which eliminates the requirement to restate the earliest prior period presented in an entity’s financial statements. As such, financial information will not be updated and the disclosures required under the new standard will not be provided for dates and periods before January 1, 2019. This standards update provides for a number of practical expedients in transition. The Corporation elected to apply the package of practical expedients permitted within the new standard, which, among other things, allowed it to carryforward the prior conclusions on lease identification, lease classification and initial direct costs. In addition, the Corporation elected to not separate lease and non-lease components. The Corporation did not elect the practical expedient to apply hindsight in determining the lease term and in assessing impairment of the ROU assets. See "Note 6 - Leases" for additional information and expanded lessee disclosures. This standards update also provides additional guidance on lessor accounting. The Corporation provides equipment lease financing to its customers, which are categorized as direct financing leases. The adoption of this standards update did not result in any changes to the accounting for this type of lease as the lessor. ASC Update 2019-04 - In April 2019, the FASB issued ASC Update 2019-04, "Codification Improvements to Topic 326, Financial Instruments - Credit Losses, Topic 815, Derivatives and Hedging, and Topic 825, Financial Instruments." The Corporation adopted this standard in the third quarter of 2019, which permitted the one-time reclassification of certain held to maturity investment securities to available for sale under Topic 815, specific to the transition guidance of ASU update 2017-12, which the Corporation adopted on January 1, 2019. See “Note 3 - Investment Securities” for additional information on this reclassification. The portion of this standards update related to codification improvements specific to Topic 326 will be implemented upon the Corporation’s adoption of ASU 2016-13 in the first quarter of 2020. Additional codification improvements to Topic 825, specifically ASU 2016-01, which the Corporation adopted as of January 1, 2018, did not have an impact on the Company’s Consolidated Financial Statements. Recently Issued Accounting Standards Standard Description Date of Anticipated Adoption Effect on Financial Statements ASC Update 2016-13 Financial Instruments - Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments The new impairment model prescribed by this standards update applies to all financial assets (i.e., loans and held to maturity investments) and certain off-balance sheet credit exposures. The recognition of credit losses will 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 incurred under current GAAP. This update also requires new disclosures for financial assets measured at amortized cost, loans and available-for-sale debt securities. Entities will apply the standard's provisions as a cumulative-effect adjustment to retained earnings as of the beginning of the first reporting period in which the guidance is adopted. This adjustment will also be recognized in regulatory capital. This update is effective for interim and annual reporting periods beginning after December 15, 2019 (January 1, 2020 for the Corporation). Early adoption is permitted. In November 2018, the FASB issued ASC Update 2018-19, "Codifications Improvements to Topic 326, Financial Instruments - Credit Losses" which clarifies that receivables arising from operating leases are accounted for using lease guidance and not as financial instruments. ASC Update 2019-04 and 2019-05 were issued to provide certain clarifications and transition relief to adopting this standards update. First Quarter of 2020 The Corporation intends to adopt these standards updates effective with its March 31, 2020 quarterly report on Form 10-Q. The allowance for credit losses ("ACL") will be based on the Corporation’s historical loss experience, borrower characteristics, forecasts of future economic conditions and other relevant factors. The Corporation will use models and other loss estimation techniques that are responsive to changes in forecasted economic conditions, to interpret borrower and economic factors in order to estimate the ACL. The Corporation will also apply qualitative factors to account for information that may not be reflected in quantitatively derived results, or other relevant factors to ensure the ACL reflects the best estimate of current expected credit losses. Preliminary expected loss estimates have been determined and continue to be validated and reviewed. The Corporation believes that the total allowance for credit losses will increase at the adoption date and that the magnitude of the increase will depend on the composition, characteristics and quality of its loan portfolio and its off-balance sheet credit exposures, as well as the prevailing economic conditions and forecasts as of the adoption date. The Corporation will continue to make refinements to its expected credit loss estimates throughout the remainder of 2019, including refinement of certain models, estimation techniques and the finalization of the operational and control structure supporting the end-to-end process. The Corporation will be adopting the option to phase in over a three-year period the day-one impact of this standards update on regulatory capital afforded to it in the Final Rule published in the Federal Register on February 14, 2019 by Office of the Comptroller of the Currency, the Board of Governors of the Federal Reserve System and the Federal Deposit Insurance Corporation. Standard Description Date of Anticipated Adoption Effect on Financial Statements ASC Update 2017-04 Intangibles - Goodwill and Other (Topic 350): Simplifying the Test for Goodwill Impairment The FASB issued this update to simplify the subsequent quantitative measurement of goodwill by eliminating Step 2 of the goodwill impairment test. Instead, 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 amounts 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. This update is effective for annual or interim goodwill impairment tests in reporting periods beginning after December 15, 2019. Early adoption is permitted. Fourth Quarter of 2019, in connection with the annual impairment test The Corporation does not expect the adoption of this update to have a material impact on its Consolidated Financial Statements. The Corporation has not needed to perform Step 2 since its impairment test completed in 2012. ASC Update 2018-13 Fair Value Measurement (Topic 820): Disclosure Framework - Changes to the Disclosure Requirements for Fair Value Measurement This update changes the fair value measurement disclosure requirements of ASC Topic 820 "Fair Value Measurement." Among other things, the update modifies the disclosure objective paragraphs of ASC 820 to eliminate: (1) "at a minimum" from the phrase "an entity shall disclose at a minimum;" and (2) other similar disclosure requirements to promote the appropriate exercise of discretion by entities. First Quarter of 2020 The Corporation intends to adopt this standards update effective with its March 31, 2020 quarterly report on Form 10-Q. This standard will impact the Corporation's Fair Value Measurement disclosure, but the Corporation does not expect the adoption of this update to have a material impact on its Consolidated Financial Statements. ASC Update 2018-14 Compensation - Retirement Benefits - Defined Benefit Plans - General (Subtopic 715-20): Disclosure Framework - Changes to the Disclosure Requirements for Defined Benefit Plans This update amends ASC Topic 715-20 to add, remove, and clarify disclosure requirements related to defined benefit pension and other postretirement plans. This update is effective for annual reporting periods beginning after December 15, 2020. Early adoption is permitted. First Quarter of 2021 The Corporation intends to adopt this standards update effective with its March 31, 2021 quarterly report on Form 10-Q. This standard will impact the Corporation's disclosure relating to employee benefit plans, but the Corporation does not expect the adoption of this update to have a material impact on its Consolidated Financial Statements. ASC Update 2018-15 Intangibles - Goodwill and Other - Internal Use Software (Topic 350-40): Customer’s Accounting for Implementation Costs Incurred in a Cloud Computing Arrangement that is a Service Contract This update requires a customer in a cloud computing arrangement that is a service contract to follow the internal-use software guidance in ASC Subtopic 350-40 to determine which implementation costs to capitalize as assets. This update is effective for annual or interim reporting periods beginning after December 15, 2019. Early adoption is permitted. First Quarter of 2020 The Corporation intends to adopt this standards update effective with its March 31, 2020 quarterly report on Form 10-Q and does not expect the adoption of this update to have a material impact on its Consolidated Financial Statements. Reclassifications

Restrictions on Cash and Cash E

Restrictions on Cash and Cash Equivalents	9 Months Ended
	Sep. 30, 2019
Cash and Cash Equivalents [Abstract]
Restrictions on Cash and Cash Equivalents	Restrictions on Cash and Cash Equivalents The Corporation’s subsidiary bank, Fulton Bank, N.A. is required to maintain reserves against its deposit liabilities. These reserves are in the form of cash and balances with the Federal Reserve Bank ("FRB"), included in "interest-bearing deposits with other banks." The amounts of such reserves as of September 30, 2019 and December 31, 2018 were $134.0 million and $156.8 million , respectively. In addition, collateral is posted by the Corporation with counterparties to secure derivative and other contracts, which is included in "interest-bearing deposits with other banks." The amounts of such collateral as of September 30, 2019 and December 31, 2018 were $243.3 million and $45.1 million , respectively.

Investment Securities

Investment Securities	9 Months Ended
	Sep. 30, 2019
Investments, Debt and Equity Securities [Abstract]
Investment Securities	Investment Securities The following table presents the amortized cost and estimated fair values of investment securities: September 30, 2019 Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Estimated Fair Value (in thousands) Available for Sale State and municipal securities $ 530,448 $ 17,000 $ (104 ) $ 547,344 Corporate debt securities 353,771 7,030 (2,395 ) 358,406 Collateralized mortgage obligations 686,577 14,120 (98 ) 700,599 Residential mortgage-backed securities 183,696 1,162 (1,073 ) 183,785 Commercial mortgage-backed securities 413,011 9,145 (47 ) 422,109 Auction rate securities 107,410 — (4,112 ) 103,298 Total $ 2,274,913 $ 48,457 $ (7,829 ) $ 2,315,541 Held to Maturity Residential mortgage-backed securities 390,069 13,888 — 403,957 Total $ 390,069 $ 13,888 $ — $ 403,957 December 31, 2018 Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Estimated Fair Value (in thousands) Available for Sale U.S. Government sponsored agency securities $ 31,586 $ 185 $ (139 ) $ 31,632 State and municipal securities 282,383 2,178 (5,466 ) 279,095 Corporate debt securities 111,454 1,432 (3,353 ) 109,533 Collateralized mortgage obligations 841,294 2,758 (11,972 ) 832,080 Residential mortgage-backed securities 476,973 1,583 (15,212 ) 463,344 Commercial mortgage-backed securities 264,165 524 (3,073 ) 261,616 Auction rate securities 107,410 — (4,416 ) 102,994 Total $ 2,115,265 $ 8,660 $ (43,631 ) $ 2,080,294 Held to Maturity State and municipal securities $ 156,134 $ 1,166 $ (93 ) $ 157,207 Residential mortgage-backed securities 450,545 3,667 — 454,212 Total $ 606,679 $ 4,833 $ (93 ) $ 611,419 On July 1, 2019, the Corporation transferred state and municipal securities from the held to maturity classification to the available for sale classification as permitted through the early adoption of ASU 2019-04, as disclosed in "Note 1 - Basis of Presentation." The amortized cost of the securities transferred was $158.9 million and the estimated fair value was $168.5 million . The Corporation still has the positive intent and ability to hold the remainder of the held to maturity portfolio (residential mortgage-backed securities) to maturity. Securities carried at $391.5 million at September 30, 2019 and $973.4 million at December 31, 2018 , were pledged as collateral to secure public and trust deposits and customer repurchase agreements. The amortized cost and estimated fair values of debt securities as of September 30, 2019 , 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. Available for Sale Held to Maturity Amortized Estimated Amortized Estimated (in thousands) Due in one year or less $ 3,722 $ 3,722 $ — $ — Due from one year to five years 38,518 39,747 — — Due from five years to ten years 332,514 337,519 — — Due after ten years 616,875 628,060 — — 991,629 1,009,048 — — Residential mortgage-backed securities (1) 183,696 183,785 390,069 403,957 Commercial mortgage-backed securities (1) 413,011 422,109 — — Collateralized mortgage obligations (1) 686,577 700,599 — — Total $ 2,274,913 $ 2,315,541 $ 390,069 $ 403,957 (1) Mortgage-backed securities and collateralized mortgage obligations do not have stated maturities and are dependent upon the interest rate environment and prepayments on the underlying loans. The following table presents information related to the gross realized gains and losses on the sales of investment securities: Gross Gross Net Gains Three months ended September 30, 2019 (in thousands) Debt securities $ 7,938 $ (3,446 ) $ 4,492 Total $ 7,938 $ (3,446 ) $ 4,492 Three months ended September 30, 2018 Debt securities $ 116 $ (102 ) $ 14 Total $ 116 $ (102 ) $ 14 Nine months ended September 30, 2019 Debt securities $ 11,207 $ (6,474 ) $ 4,733 Total $ 11,207 $ (6,474 ) $ 4,733 Nine months ended September 30, 2018 Equity securities $ 9 $ — $ 9 Debt securities 1,656 (1,628 ) 28 Total $ 1,665 $ (1,628 ) $ 37 The following table presents a summary of the cumulative credit related other-than-temporary impairment charges, recognized as components of earnings, for debt securities held by the Corporation at September 30, 2019 and 2018: Three months ended September 30 Nine months ended September 30 2019 2018 2019 2018 (in thousands) Balance of cumulative credit losses on debt securities, beginning of period $ (990 ) $ (11,510 ) $ (11,510 ) $ (11,510 ) Reductions for securities sold during the period — — 10,520 — Balance of cumulative credit losses on debt securities, end of period $ (990 ) $ (11,510 ) $ (990 ) $ (11,510 ) 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, 2019 and December 31, 2018: September 30, 2019 Less than 12 months 12 months or longer Total Number of Securities Estimated Fair Value Unrealized Losses Number of Securities Estimated Fair Value Unrealized Losses Estimated Fair Value Unrealized Losses Available for Sale (in thousands) State and municipal securities 5 $ 17,058 $ (104 ) — $ — $ — $ 17,058 $ (104 ) Corporate debt securities 9 72,569 (313 ) 13 25,729 (2,082 ) 98,298 (2,395 ) Collateralized mortgage obligations 4 5,734 (2 ) 5 5,886 (96 ) 11,620 (98 ) Residential mortgage-backed securities 3 9,159 (29 ) 28 135,616 (1,044 ) 144,775 (1,073 ) Commercial mortgage-backed securities 1 11,843 (47 ) — — — 11,843 (47 ) Auction rate securities — — — 177 103,298 (4,112 ) 103,298 (4,112 ) Total (1) 22 $ 116,363 $ (495 ) 223 $ 270,529 $ (7,334 ) $ 386,892 $ (7,829 ) (1) No Held to Maturity investments were in an unrealized loss position at September 30, 2019. December 31, 2018 Less than 12 months 12 months or longer Total Number of Securities Estimated Unrealized Number of Securities Estimated Unrealized Estimated Unrealized Available for Sale (in thousands) U.S. Government sponsored agency securities 1 $ 4,961 $ (31 ) 1 $ 5,770 $ (108 ) $ 10,731 $ (139 ) State and municipal securities 33 72,950 (1,292 ) 38 83,770 (4,174 ) 156,720 (5,466 ) Corporate debt securities 8 24,419 (227 ) 14 25,642 (3,126 ) 50,061 (3,353 ) Collateralized mortgage obligations 39 136,563 (1,050 ) 89 388,173 (10,922 ) 524,736 (11,972 ) Residential mortgage-backed securities 17 18,220 (222 ) 110 402,779 (14,990 ) 420,999 (15,212 ) Commercial mortgage-backed securities 1 9,778 (35 ) 25 197,326 (3,038 ) 207,104 (3,073 ) Auction rate securities — — — 177 102,994 (4,416 ) 102,994 (4,416 ) Total 99 $ 266,891 $ (2,857 ) 454 $ 1,206,454 $ (40,774 ) $ 1,473,345 $ (43,631 ) Held to Maturity State and municipal securities 6 $ 20,601 $ (93 ) — $ — $ — $ 20,601 $ (93 ) Total 6 $ 20,601 $ (93 ) — $ — $ — $ 20,601 $ (93 ) The Corporation’s collateralized mortgage obligations and mortgage-backed securities have contractual terms that generally do not permit the issuer to settle the securities at a price less than the amortized cost of the investment. 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, 2019 . As of September 30, 2019 , all of the auction rate securities ("ARCs") were rated above investment grade. Based on management’s evaluations, none of the ARCs were subject to any other-than-temporary impairment charges for the three and nine months ended September 30, 2019 . 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. 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, 2019 . 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
	Sep. 30, 2019
Receivables [Abstract]
Loans and Allowance for Credit Losses	Loans and Leases and Allowance for Credit Losses Loans and Leases, Net of Unearned Income Loans and leases, net of unearned income are summarized as follows: September 30, December 31, 2018 (in thousands) Real-estate - commercial mortgage $ 6,604,634 $ 6,434,285 Commercial - industrial, financial and agricultural 4,494,496 4,404,548 Real estate - residential mortgage 2,570,793 2,251,044 Real estate - home equity 1,346,115 1,452,137 Real estate - construction 913,644 916,599 Consumer 464,213 419,186 Equipment lease financing and other 316,880 311,866 Overdrafts 2,929 2,774 Loans and leases, gross of unearned income 16,713,704 16,192,439 Unearned income (26,838 ) (26,639 ) Loans and leases, net of unearned income $ 16,686,866 $ 16,165,800 The Corporation segments its loan and lease portfolio by general loan type, or "portfolio segments," as presented in the table under the heading, "Loans and Leases, 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 loans 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 loans include direct consumer installment loans and indirect vehicle loans. Allowance for Credit Losses The allowance for credit losses consists of the allowance for loan and lease losses and the reserve for unfunded lending commitments. The allowance for loan and lease losses represents management’s estimate of incurred losses in the loan and lease portfolio as of the balance sheet date and is recorded as a reduction to loans and leases. The reserve for unfunded lending commitments represents management’s estimate of incurred losses in its unfunded loan commitments and other off balance sheet credit exposures, such as letters of credit, 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 and leases individually evaluated for impairment (FASB ASC Section 310-10-35); and (2) allowances calculated for pools of loans and leases collectively evaluated for impairment (FASB ASC Subtopic 450-20). The following table presents the components of the allowance for credit losses: September 30, December 31, (in thousands) Allowance for loan and lease losses $ 166,135 $ 160,537 Reserve for unfunded lending commitments 6,662 8,873 Allowance for credit losses $ 172,797 $ 169,410 The following table presents the activity in the allowance for credit losses: Three months ended September 30 Nine months ended September 30 2019 2018 2019 2018 (in thousands) Balance at beginning of period $ 176,941 $ 169,247 $ 169,410 $ 176,084 Loans and leases charged off (10,128 ) (6,883 ) (20,208 ) (55,440 ) Recoveries of loans and leases previously charged off 3,814 3,842 11,300 8,475 Net loans and leases charged off (6,314 ) (3,041 ) (8,908 ) (46,965 ) Provision for credit losses 2,170 1,620 12,295 38,707 Balance at end of period $ 172,797 $ 167,826 $ 172,797 $ 167,826 The following table presents the activity in the allowance for loan and lease 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 Equipment lease financing, other and overdrafts Total (in thousands) Three months ended September 30, 2019 Balance at June 30, 2019 $ 54,859 $ 66,341 $ 18,981 $ 18,892 $ 4,928 $ 3,363 $ 2,869 $ 170,233 Loans and leases charged off (394 ) (7,181 ) (498 ) (533 ) (45 ) (877 ) (600 ) (10,128 ) Recoveries of loans and leases previously charged off 444 2,311 132 440 164 216 107 3,814 Net loans and leases recovered (charged off) 50 (4,870 ) (366 ) (93 ) 119 (661 ) (493 ) (6,314 ) Provision for loan and lease losses (1) (5,529 ) 7,710 (662 ) (109 ) (664 ) 798 672 2,216 Balance at September 30, 2019 $ 49,380 $ 69,181 $ 17,953 $ 18,690 $ 4,383 $ 3,500 $ 3,048 $ 166,135 Three months ended September 30, 2018 Balance at June 30, 2018 $ 56,583 $ 59,045 $ 16,247 $ 14,504 $ 5,988 $ 1,699 $ 1,984 $ 156,050 Loans and leases charged off (650 ) (3,541 ) (743 ) (483 ) (212 ) (672 ) (582 ) (6,883 ) Recoveries of loans and leases previously charged off 928 731 217 317 664 390 595 3,842 Net loans and leases recovered (charged off) 278 (2,810 ) (526 ) (166 ) 452 (282 ) 13 (3,041 ) Provision for loan and lease losses (1) (2,750 ) (301 ) 2,890 3,774 (961 ) 1,429 720 4,801 Balance at September 30, 2018 $ 54,111 $ 55,934 $ 18,611 $ 18,112 $ 5,479 $ 2,846 $ 2,717 $ 157,810 Nine months ended September 30, 2019 Balance at December 31, 2018 $ 52,889 $ 58,868 $ 18,911 $ 18,921 $ 5,061 $ 3,217 $ 2,670 $ 160,537 Loans and leases charged off (1,769 ) (11,863 ) (923 ) (1,322 ) (143 ) (2,355 ) (1,833 ) (20,208 ) Recoveries of loans and leases previously charged off 749 6,234 552 783 1,493 1,005 484 11,300 Net loans and leases recovered (charged off) (1,020 ) (5,629 ) (371 ) (539 ) 1,350 (1,350 ) (1,349 ) (8,908 ) Provision for loan losses (1) (2,489 ) 15,942 (587 ) 308 (2,028 ) 1,633 1,727 14,506 Balance at September 30, 2019 $ 49,380 $ 69,181 $ 17,953 $ 18,690 $ 4,383 $ 3,500 $ 3,048 $ 166,135 Nine months ended September 30, 2018 Balance at December 31, 2017 $ 58,793 $ 66,280 $ 18,127 $ 16,088 $ 6,620 $ 2,045 $ 1,957 $ 169,910 Loans and leases charged off (1,283 ) (46,178 ) (1,967 ) (1,128 ) (976 ) (2,276 ) (1,632 ) (55,440 ) Recoveries of loans and leases previously charged off 1,528 2,347 694 520 1,414 1,015 957 8,475 Net loans and leases recovered (charged off) 245 (43,831 ) (1,273 ) (608 ) 438 (1,261 ) (675 ) (46,965 ) Provision for loan losses (1) (4,927 ) 33,485 1,757 2,632 (1,579 ) 2,062 1,435 34,865 Balance at September 30, 2018 $ 54,111 $ 55,934 $ 18,611 $ 18,112 $ 5,479 $ 2,846 $ 2,717 $ 157,810 (1) The provision for loan and lease losses excluded a $ 46,000 and a $2.2 million decrease in the reserve for unfunded lending commitments for the three and nine months ended September 30, 2019 , respectively, and a $3.2 million decrease and a $3.8 million increase in the reserve for unfunded lending commitments for the three and nine months ended September 30, 2018, respectively. The following table presents loans and leases, net of unearned income and their related allowance for loan and lease 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 Equipment lease financing, other and overdrafts Total (in thousands) Allowance for loan and lease losses at September 30, 2019: Collectively evaluated for impairment $ 42,766 $ 58,722 $ 8,033 $ 9,678 $ 3,970 $ 3,495 $ 2,944 $ 129,608 Individually evaluated for impairment 6,614 10,459 9,920 9,012 413 5 104 36,527 $ 49,380 $ 69,181 $ 17,953 $ 18,690 $ 4,383 $ 3,500 $ 3,048 $ 166,135 Loans and leases, net of unearned income at September 30, 2019: Collectively evaluated for impairment $ 6,543,781 $ 4,453,062 $ 1,323,950 $ 2,533,295 $ 909,811 $ 464,206 $ 275,552 $ 16,503,657 Individually evaluated for impairment 60,853 41,434 22,165 37,498 3,833 7 17,419 183,209 $ 6,604,634 $ 4,494,496 $ 1,346,115 $ 2,570,793 $ 913,644 $ 464,213 $ 292,971 $ 16,686,866 Allowance for loan and lease losses at September 30, 2018: Collectively evaluated for impairment $ 46,812 $ 47,028 $ 7,856 $ 8,369 $ 4,718 $ 2,841 $ 2,717 $ 120,341 Individually evaluated for impairment 7,299 8,906 10,755 9,743 761 5 — 37,469 $ 54,111 $ 55,934 $ 18,611 $ 18,112 $ 5,479 $ 2,846 $ 2,717 $ 157,810 Loans and leases, net of unearned income at September 30, 2018: Collectively evaluated for impairment $ 6,290,143 $ 4,235,953 $ 1,444,898 $ 2,133,718 $ 971,167 $ 390,700 $ 285,021 $ 15,751,600 Individually evaluated for impairment 47,841 52,870 24,254 39,830 8,690 8 — 173,493 $ 6,337,984 $ 4,288,823 $ 1,469,152 $ 2,173,548 $ 979,857 $ 390,708 $ 285,021 $ 15,925,093 Impaired Loans and Leases A loan or lease is considered to be impaired if it is probable that all amounts will not be collected according to the contractual terms of the loan or lease agreement. Impaired loans and leases consist of all loans and leases on non-accrual status and accruing troubled debt restructurings ("TDRs"). An allowance for loan and lease losses is established for an impaired loan or lease if its carrying value exceeds its estimated fair value. Impaired loans and leases to borrowers with total commitments greater than or equal to $1.0 million are evaluated individually for impairment. Impaired loans and leases to borrowers with total commitments less than $1.0 million are pooled and measured for impairment collectively. All loans and leases individually evaluated for impairment are measured for losses on a quarterly basis. As of September 30, 2019 and December 31, 2018 , substantially all of the Corporation’s individually evaluated impaired loans and leases with total commitments 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 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 estate. As of September 30, 2019 and December 31, 2018 , approximately 73% and 89% , respectively, of impaired loans and leases with principal balances greater than or equal to $1.0 million , whose primary collateral is real estate, were measured at estimated fair value 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 and leases evaluated for impairment 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 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 and leases by class segment: September 30, 2019 December 31, 2018 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 $ 31,305 $ 29,156 $ — $ 25,095 $ 23,481 $ — Commercial 27,060 21,617 — 33,493 26,585 — Real estate - residential mortgage 4,531 4,368 — 3,149 3,149 — Construction 6,449 2,598 — 8,980 5,083 — Equipment lease financing 19,269 17,003 — 19,269 19,268 — 88,614 74,742 — 89,986 77,566 — With a related allowance recorded: Real estate - commercial mortgage 38,393 31,697 6,614 29,005 22,592 7,255 Commercial 29,146 19,817 10,459 37,706 28,708 12,513 Real estate - residential mortgage 37,559 33,130 9,012 39,972 35,621 9,394 Real estate - home equity 25,317 22,165 9,920 26,599 23,373 10,370 Real estate - construction 4,724 1,235 413 5,984 2,307 793 Consumer 7 7 5 11 11 7 Equipment lease financing 416 416 104 — — — 135,562 108,467 36,527 139,277 112,612 40,332 Total $ 224,176 $ 183,209 $ 36,527 $ 229,263 $ 190,178 $ 40,332 As of September 30, 2019 and December 31, 2018 , there were $74.7 million and $77.6 million , respectively, of impaired loans and leases that did not have a related allowance for loan and lease losses. The estimated fair values of the collateral securing these loans and leases exceeded their carrying amount, or the loans and leases 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 and leases by class segment: Three months ended September 30 Nine months ended September 30 2019 2018 2019 2018 Average Interest (1) Average Interest (1) Average Interest (1) Average Interest (1) (in thousands) With no related allowance recorded: Real estate - commercial mortgage $ 29,865 $ 94 $ 26,051 $ 94 $ 27,028 $ 291 $ 25,702 $ 274 Commercial 22,603 30 30,157 66 24,670 92 35,098 208 Real estate - residential mortgage 4,384 26 3,182 20 3,761 69 3,872 71 Real estate -construction 2,601 — 6,845 — 3,827 — 7,408 — Equipment lease financing 17,381 — — — 18,136 — — — 76,834 150 66,235 180 77,422 452 72,080 553 With a related allowance recorded: Real estate - commercial mortgage 30,508 96 23,734 85 25,837 268 24,727 260 Commercial 23,906 32 23,687 51 26,373 101 23,934 149 Real estate - home equity 22,874 210 24,628 202 23,237 655 24,690 581 Real estate - residential mortgage 33,035 198 36,396 227 34,535 638 36,578 671 Real estate -construction 1,399 — 2,061 — 1,683 — 2,778 — Consumer 8 — 10 — 10 — 18 — Equipment lease financing 208 — — — 104 — — — 111,938 536 110,516 565 111,779 1,662 112,725 1,661 Total $ 188,772 $ 686 $ 176,751 $ 745 $ 189,201 $ 2,114 $ 184,805 $ 2,214 (1) All impaired loans and leases were either TDRs or non-accrual loans and leases. Interest income recognized for the three and nine months ended September 30, 2019 and 2018 represented 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 have a heightened credit risk, but not to the point of justifying a classification of substandard. Loans in this category are currently acceptable, but are nevertheless potentially weak. • Substandard or Lower : These loans are inadequately protected by current sound worth and paying capacity of the borrower. There exists a well-defined weakness or weaknesses that jeopardize the normal repayment of the debt. The 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 in the preceding tables. 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 following table presents internal credit risk ratings for the indicated loan class segments: Pass Special Mention Substandard or Lower Total September 30, 2019 December 31, 2018 September 30, 2019 December 31, 2018 September 30, 2019 December 31, 2018 September 30, 2019 December 31, 2018 (dollars in thousands) Real estate - commercial mortgage $ 6,290,567 $ 6,129,463 $ 142,136 $ 170,827 $ 171,931 $ 133,995 $ 6,604,634 $ 6,434,285 Commercial - secured 3,926,856 3,902,484 198,592 193,470 184,584 129,026 4,310,032 4,224,980 Commercial - unsecured 175,761 171,589 5,082 4,016 3,621 3,963 184,464 179,568 Total commercial - industrial, financial and agricultural 4,102,617 4,074,073 203,674 197,486 188,205 132,989 4,494,496 4,404,548 Construction - commercial residential 112,163 104,079 2,871 6,912 3,627 6,881 118,661 117,872 Construction - commercial 707,290 723,030 719 1,163 2,704 2,533 710,713 726,726 Total construction (excluding Construction - other) 819,453 827,109 3,590 8,075 6,331 9,414 829,374 844,598 $ 11,212,637 $ 11,030,645 $ 349,400 $ 376,388 $ 366,467 $ 276,398 $ 11,928,504 $ 11,683,431 % of Total 94.0 % 94.4 % 2.9 % 3.2 % 3.1 % 2.4 % 100.0 % 100.0 % The Corporation does not assign internal risk ratings to smaller balance, homogeneous loans and leases, such as home equity, residential mortgage, construction loans to individuals secured by residential real estate, consumer and equipment lease financing. For these loans and leases, the most relevant credit quality indicator is delinquency status. The migration of loans and leases through the various delinquency status categories is a significant component of the allowance for credit losses methodology for those loans and leases, which bases the probability of default on this migration. The following table presents a summary of performing, delinquent and non-performing loans and leases for the indicated class segments: Performing Delinquent (1) Non-performing (2) Total September 30, 2019 December 31, 2018 September 30, 2019 December 31, 2018 September 30, 2019 December 31, 2018 September 30, 2019 December 31, 2018 (dollars in thousands) Real estate - home equity $ 1,325,900 $ 1,431,666 $ 9,445 $ 10,702 $ 10,770 $ 9,769 $ 1,346,115 $ 1,452,137 Real estate - residential mortgage 2,526,551 2,202,955 24,092 28,988 20,150 19,101 2,570,793 2,251,044 Construction - other 82,787 71,511 1,296 — 187 490 84,270 72,001 Consumer - direct 64,066 55,629 641 338 94 66 64,801 56,033 Consumer - indirect 395,919 359,405 3,345 3,405 148 343 399,412 363,153 Total consumer 459,985 415,034 3,986 3,743 242 409 464,213 419,186 Equipment lease financing, other and overdrafts 274,239 267,112 1,066 1,302 17,666 19,587 292,971 288,001 $ 4,669,462 $ 4,388,278 $ 39,885 $ 44,735 $ 49,015 $ 49,356 $ 4,758,362 $ 4,482,369 % of Total 98.1 % 97.9 % 0.9 % 1.0 % 1.0 % 1.1 % 100.0 % 100.0 % (1) Includes all accruing loans and leases 30 days to 89 days past due. (2) Includes all accruing loans and leases 90 days or more past due and all non-accrual loans and leases. The following table presents non-performing assets: September 30, December 31, (in thousands) Non-accrual loans and leases $ 124,287 $ 128,572 Loans and leases 90 days or more past due and still accruing 11,689 11,106 Total non-performing loans and leases 135,976 139,678 Other real estate owned (OREO) 7,706 10,518 Total non-performing assets $ 143,682 $ 150,196 The following tables present past due status and non-accrual loans and leases by portfolio segment and class segment: September 30, 2019 30-59 Days Past Due 60-89 Days Past Due ≥ 90 Days Past Due and Accruing Non- accrual Total Past Due and Non-accrual Current Total (in thousands) Real estate - commercial mortgage $ 25,100 $ 4,292 $ 1,301 $ 44,409 $ 75,102 $ 6,529,532 $ 6,604,634 Commercial - secured 3,234 1,961 731 35,664 41,590 4,268,442 4,310,032 Commercial - unsecured 91 85 153 578 907 183,557 184,464 Total commercial - industrial, financial and agricultural 3,325 2,046 884 36,242 42,497 4,451,999 4,494,496 Real estate - home equity 7,063 2,382 4,122 6,648 20,215 1,325,900 1,346,115 Real estate - residential mortgage 17,801 6,291 4,414 15,736 44,242 2,526,551 2,570,793 Construction - commercial residential 1,326 — 479 3,627 5,432 113,229 118,661 Construction - commercial 392 — — 19 411 710,302 710,713 Construction - other 1,296 — — 187 1,483 82,787 84,270 Total real estate - construction 3,014 — 479 3,833 7,326 906,318 913,644 Consumer - direct 521 120 94 — 735 64,066 64,801 Consumer - indirect 2,890 455 148 — 3,493 395,919 399,412 Total consumer 3,411 575 242 — 4,228 459,985 464,213 Equipment lease financing, other and overdrafts 923 143 247 17,419 18,732 274,239 292,971 Total $ 60,637 $ 15,729 $ 11,689 $ 124,287 $ 212,342 $ 16,474,524 $ 16,686,866 December 31, 2018 30-59 Days Past Due 60-89 Days Past Due ≥ 90 Days Past Due and Accruing Non- accrual Total Past Due and Non-accrual Current Total (in thousands) Real estate - commercial mortgage $ 12,206 $ 1,500 $ 1,765 $ 30,388 $ 45,859 $ 6,388,426 $ 6,434,285 Commercial - secured 5,227 938 1,068 49,299 56,532 4,168,448 4,224,980 Commercial - unsecured 1,598 — 51 851 2,500 177,068 179,568 Total commercial - industrial, financial and agricultural 6,825 938 1,119 50,150 59,032 4,345,516 4,404,548 Real estate - home equity 7,144 3,558 3,061 6,708 20,471 1,431,666 1,452,137 Real estate - residential mortgage 20,796 8,192 4,433 14,668 48,089 2,202,955 2,251,044 Construction - commercial residential 2,489 — — 6,881 9,370 108,502 117,872 Construction - commercial — — — 19 19 726,707 726,726 Construction - other — — — 490 490 71,511 72,001 Total real estate - construction 2,489 — — 7,390 9,879 906,720 916,599 Consumer - direct 267 71 66 — 404 55,629 56,033 Consumer - indirect 2,908 497 343 — 3,748 359,405 363,153 Total consumer 3,175 568 409 — 4,152 415,034 419,186 Equipment lease financing, other and overdrafts 1,005 297 319 19,268 20,889 267,112 288,001 Total $ 53,640 $ 15,053 $ 11,106 $ 128,572 $ 208,371 $ 15,957,429 $ 16,165,800 The following table presents TDRs, by class segment: September 30, December 31, (in thousands) Real estate - residential mortgage $ 21,762 $ 24,102 Real estate - commercial mortgage 16,444 15,685 Real estate - home equity 15,505 16,665 Commercial 5,192 5,143 Consumer 7 10 Total accruing TDRs 58,910 61,605 Non-accrual TDRs (1) 23,553 28,659 Total TDRs $ 82,463 $ 90,264 (1) Included in non-accrual loans and leases in the preceding table detailing non-performing assets. The following table presents TDRs, by class segment, for loans that were modified during the three and nine months ended September 30, 2019 and 2018: Three months ended September 30 Nine months ended September 30 2019 2018 2019 2018 Number of Loans Recorded Investment Number of Loans Recorded Investment Number of Loans Recorded Investment Number of Loans Recorded Investment (dollars in thousands) Real estate - residential mortgage 1 $ 830 4 $ 597 6 $ 2,263 6 $ 679 Real estate - commercial mortgage 1 81 — — 1 81 — — Real estate - home equity 12 327 24 1,002 46 2,281 71 4,045 Commercial 3 97 2 913 13 4,928 13 10,325 Total 17 $ 1,335 30 $ 2,512 66 $ 9,553 90 $ 15,049 Restructured loan modifications may include payment schedule modifications, interest rate concessions, bankruptcies, principal reduction or some combination of these concessions. During the three and nine months ended September 30, 2019, restructured loan modifications of residential mortgages, home equity and commercial loans primarily included maturity date extensions, rate modifications and payment schedule modifications. The following table presents TDRs, by class segment, as of September 30, 2019 and 2018 that were modified in the previous 12 months and had a post-modification payment default during the nine months ended September 30, 2019 and 2018 . The Corporation defines a payment default as a single missed payment. 2019 2018 Number of Loans Recorded Investment Number of Loans Recorded Investment (dollars in thousands) Real estate - residential mortgage 1 $ 231 6 $ 724 Real estate - commercial mortgage — — 2 452 Real estate - home equity 16 657 25 1,591 Commercial 4 190 4 5,042 Total 21 $ 1,078 37 $ 7,809

Mortgage Servicing Rights

Mortgage Servicing Rights	9 Months Ended
	Sep. 30, 2019
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 2019 2018 2019 2018 (in thousands) Amortized cost: Balance at beginning of period $ 38,826 $ 37,894 $ 38,573 $ 37,663 Originations of mortgage servicing rights 2,499 2,018 5,585 5,247 Amortization (1,970 ) (1,684 ) (4,803 ) (4,682 ) Balance at end of period $ 39,355 $ 38,228 $ 39,355 $ 38,228 MSRs represent the economic value of contractual rights to service mortgage loans that have been sold. Accordingly, actual and expected prepayments of the underlying mortgage loans can impact the corresponding fair value of the 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. The fair values of MSRs were $44.0 million and $50.2 million

Leases

Leases	9 Months Ended
	Sep. 30, 2019
Leases [Abstract]
Leases	Leases Effective January 1, 2019, the Corporation adopted ASC Update 2016-02, "Leases (Topic 842)," using the modified retrospective method of applying the new standard at the adoption date. In addition, the Corporation elected the package of practical expedients permitted under the transition guidance within the new standard as the lessee. This permitted the carry forward of the conclusions on lease identification, lease classification and initial direct costs. The Corporation also elected not to separate lease and non-lease components. Financial results for reporting periods beginning on or after January 1, 2019 are presented under the Topic 842 requirements, while prior period amounts are not adjusted and continue to be reported in accordance with previous guidance (Topic 840). As a lessee, the majority of the operating lease portfolio consists of real estate leases for the Corporation's branches, land and office space. The operating leases have remaining lease terms of 1 year to 20 years, some of which include options to extend the leases for 5 years or more. ROU assets and lease liabilities are not recognized for leases with an initial term of 12 months or less. The Corporation does not have any finance leases as lessee. Certain real estate leases have lease payments that adjust based on annual changes in the Consumer Price Index ("CPI"). The leases that are dependent upon CPI are initially measured using the index or rate at the commencement date and are included in the measurement of the lease liability. Operating lease expense represents fixed lease payments for operating leases recognized on a straight-line basis over the applicable lease term. Variable lease expense represents the payment of real estate taxes, insurance and common area maintenance based on the Corporation's pro-rata share. Sublease income consists mostly of operating leases for space within the Corporation's offices and branches. The following table presents the components of lease expense, which is included in net occupancy expense on the Consolidated Statements of Income (in thousands): Three months ended Nine months ended September 30, 2019 September 30, 2019 Operating lease expense $ 4,654 $ 14,140 Variable lease expense 786 2,156 Sublease income (239 ) (610 ) Total lease expense $ 5,201 $ 15,686 Supplemental balance sheet information related to leases was as follows (dollars in thousands): Operating Leases Balance Sheet Classification September 30, 2019 ROU assets Other assets $ 104,746 Lease liabilities Other liabilities $ 111,617 Weighted average remaining lease term 8.3 years Weighted average discount rate 3.05 % The discount rate used in determining the lease liability for each individual lease was the Federal Home Loan Bank ("FHLB") fixed advance rate which corresponded with the remaining lease term as of January 1, 2019 for leases that existed at adoption and as of the lease commencement or modification date for leases subsequently entered into. Supplemental cash flow information related to operating leases was as follows (in thousands): Nine months ended September 30, 2019 Cash paid for amounts included in the measurement of lease liabilities $ 13,913 ROU assets obtained in exchange for lease obligations 115,681 Lease payment obligations for each of the next five years and thereafter, with a reconciliation to the Corporation's lease liability were as follows (in thousands): Year Operating Leases For the three months ending December 31, 2019 $ 6,304 2020 18,761 2021 17,623 2022 16,349 2023 14,094 Thereafter 54,809 Total lease payments 127,940 Less: imputed interest (16,323 ) Present value of lease liabilities $ 111,617 As of September 30, 2019 , the Corporation had not entered into any material leases that have not yet commenced. As previously disclosed in the Corporation's 2018 Annual Report on Form 10-K and under Topic 840, future minimum lease payments for operating leases having initial or remaining noncancellable lease terms in excess of one year as of December 31, 2018 were $18.0 million , $17.3 million , $15.7 million , $13.7 million , $11.4 million for years 2019 through 2023, respectively, and $43.3 million in the aggregate for all years thereafter.
Leases	Leases Effective January 1, 2019, the Corporation adopted ASC Update 2016-02, "Leases (Topic 842)," using the modified retrospective method of applying the new standard at the adoption date. In addition, the Corporation elected the package of practical expedients permitted under the transition guidance within the new standard as the lessee. This permitted the carry forward of the conclusions on lease identification, lease classification and initial direct costs. The Corporation also elected not to separate lease and non-lease components. Financial results for reporting periods beginning on or after January 1, 2019 are presented under the Topic 842 requirements, while prior period amounts are not adjusted and continue to be reported in accordance with previous guidance (Topic 840). As a lessee, the majority of the operating lease portfolio consists of real estate leases for the Corporation's branches, land and office space. The operating leases have remaining lease terms of 1 year to 20 years, some of which include options to extend the leases for 5 years or more. ROU assets and lease liabilities are not recognized for leases with an initial term of 12 months or less. The Corporation does not have any finance leases as lessee. Certain real estate leases have lease payments that adjust based on annual changes in the Consumer Price Index ("CPI"). The leases that are dependent upon CPI are initially measured using the index or rate at the commencement date and are included in the measurement of the lease liability. Operating lease expense represents fixed lease payments for operating leases recognized on a straight-line basis over the applicable lease term. Variable lease expense represents the payment of real estate taxes, insurance and common area maintenance based on the Corporation's pro-rata share. Sublease income consists mostly of operating leases for space within the Corporation's offices and branches. The following table presents the components of lease expense, which is included in net occupancy expense on the Consolidated Statements of Income (in thousands): Three months ended Nine months ended September 30, 2019 September 30, 2019 Operating lease expense $ 4,654 $ 14,140 Variable lease expense 786 2,156 Sublease income (239 ) (610 ) Total lease expense $ 5,201 $ 15,686 Supplemental balance sheet information related to leases was as follows (dollars in thousands): Operating Leases Balance Sheet Classification September 30, 2019 ROU assets Other assets $ 104,746 Lease liabilities Other liabilities $ 111,617 Weighted average remaining lease term 8.3 years Weighted average discount rate 3.05 % The discount rate used in determining the lease liability for each individual lease was the Federal Home Loan Bank ("FHLB") fixed advance rate which corresponded with the remaining lease term as of January 1, 2019 for leases that existed at adoption and as of the lease commencement or modification date for leases subsequently entered into. Supplemental cash flow information related to operating leases was as follows (in thousands): Nine months ended September 30, 2019 Cash paid for amounts included in the measurement of lease liabilities $ 13,913 ROU assets obtained in exchange for lease obligations 115,681 Lease payment obligations for each of the next five years and thereafter, with a reconciliation to the Corporation's lease liability were as follows (in thousands): Year Operating Leases For the three months ending December 31, 2019 $ 6,304 2020 18,761 2021 17,623 2022 16,349 2023 14,094 Thereafter 54,809 Total lease payments 127,940 Less: imputed interest (16,323 ) Present value of lease liabilities $ 111,617 As of September 30, 2019 , the Corporation had not entered into any material leases that have not yet commenced. As previously disclosed in the Corporation's 2018 Annual Report on Form 10-K and under Topic 840, future minimum lease payments for operating leases having initial or remaining noncancellable lease terms in excess of one year as of December 31, 2018 were $18.0 million , $17.3 million , $15.7 million , $13.7 million , $11.4 million for years 2019 through 2023, respectively, and $43.3 million in the aggregate for all years thereafter.

Derivative Financial Instrument

Derivative Financial Instruments	9 Months Ended
	Sep. 30, 2019
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 value recognized in earnings as components of non-interest income or non-interest expense on the Consolidated Statements of Income. Derivative contracts create counterparty credit risk with both the Corporation's customers and with institutional 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. For each of the derivatives, gross derivative assets and liabilities are recorded in other assets and other liabilities, respectively, on the Consolidated Balance Sheets. Related gains and losses on these derivative instruments are recorded in other changes, net on the Consolidated Statement of Cash Flows. 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. 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. Fulton Bank, N.A. ("the Bank"), exceeds $10 billion in total assets and is required to clear all eligible interest rate swap contracts with a central counterparty. As a result, the Bank is 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 specific date at a contractual price. The Corporation limits its foreign exchange exposure with customers by entering into contracts with institutional counterparties to mitigate its foreign exchange risk. The Corporation also holds certain amounts of foreign currency with international correspondent banks ("Foreign Currency Nostro Accounts"). The Corporation limits the total overnight net foreign currency open positions, which is defined as an aggregate of all outstanding contracts and Foreign Currency Nostro Account balances, to $500,000 . The following table presents a summary of the notional amounts and fair values of derivative financial instruments: September 30, 2019 December 31, 2018 Notional Asset Notional Asset (in thousands) Interest Rate Locks with Customers Positive fair values $ 179,038 $ 1,722 $ 101,700 $ 1,148 Negative fair values 5,647 (33 ) 1,646 (12 ) Forward Commitments Positive fair values 39,874 95 1,540 3 Negative fair values 96,000 (254 ) 83,562 (1,066 ) Interest Rate Swaps with Customers Positive fair values 2,947,777 193,405 1,185,144 33,258 Negative fair values 75,840 (186 ) 1,386,046 (30,769 ) Interest Rate Swaps with Dealer Counterparties Positive fair values 75,840 186 1,386,046 28,143 Negative fair values 2,947,777 (104,544 ) 1,185,144 (16,338 ) Foreign Exchange Contracts with Customers Positive fair values 10,069 327 5,881 105 Negative fair values 1,691 (165 ) 9,690 (251 ) Foreign Exchange Contracts with Correspondent Banks Positive fair values 4,329 208 9,220 287 Negative fair values 11,953 (315 ) 6,831 (130 ) The following table presents a summary of the fair value gains (losses) on derivative financial instruments: Consolidated Statements of Income Category of Gain/ (Loss) Recognized in Income Three months ended September 30 Nine months ended September 30 2019 2018 2019 2018 (in thousands) Mortgage Banking Derivatives Mortgage banking income $ 843 $ 441 $ 1,457 $ 486 Interest rate swaps Other expense 51 18 198 17 Foreign exchange contracts Other income 10 (59 ) 44 (37 ) Net fair value gains on derivative financial instruments $ 904 $ 400 $ 1,699 $ 466 Fair Value Option The Corporation has elected to measure mortgage loans held for sale at fair value. The following table presents a summary of mortgage loans held for sale and the impact of the fair value election on the Consolidated Financial Statements as of the periods shown: September 30, December 31, (in thousands) Amortized cost $ 33,427 $ 26,407 Fair value 33,945 27,099 Losses related to changes in fair values of mortgage loans held for sale were $499,000 and $334,000 for the three months ended September 30, 2019 and 2018, respectively, and $174,000 and $207,000 , for the nine months ended September 30, 2019 and 2018, respectively. Balance Sheet Offsetting Although 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 such qualifying assets and liabilities. 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. A daily settlement occurs through a clearing agent for changes in the fair value of centrally cleared derivatives. 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 available for sale ("AFS") investment securities on the Consolidated Balance Sheets. The Corporation does not enter into reverse repurchase agreements; therefore, there is no such offsetting to be done with the repurchase agreements. 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, 2019 Interest rate swap derivative assets $ 193,701 $ (207 ) $ — $ 193,494 Foreign exchange derivative assets with correspondent banks 196 (196 ) — — Total $ 193,897 $ (403 ) $ — $ 193,494 Interest rate swap derivative liabilities $ 104,730 $ (207 ) $ (104,523 ) $ — Foreign exchange derivative liabilities with correspondent banks 314 (196 ) — 118 Total $ 105,044 $ (403 ) $ (104,523 ) $ 118 December 31, 2018 Interest rate swap derivative assets $ 61,401 $ (12,955 ) $ (23,270 ) $ 25,176 Foreign exchange derivative assets with correspondent banks 287 (130 ) — 157 Total $ 61,688 $ (13,085 ) $ (23,270 ) $ 25,333 Interest rate swap derivative liabilities $ 47,107 $ (22,786 ) $ (22,786 ) $ 1,535 Foreign exchange derivative liabilities with correspondent banks 130 (130 ) — — Total $ 47,237 $ (22,916 ) $ (22,786 ) $ 1,535 (1) For interest rate swap assets, amounts represent any derivative liability fair values that could be offset in the event of counterparty or customer default. For interest rate swap liabilities, amounts represent any derivative asset fair values that could be offset in the event of counterparty or customer default. (2) Amounts represent cash collateral received from the counterparty or posted by the Corporation on interest rate swap transactions and foreign exchange contracts with financial institution counterparties. Interest rate swaps with customers are collateralized by the same collateral securing the underlying loans to those borrowers. Cash and securities collateral amounts are included in the table only to the extent of the net derivative fair values.

Tax Credit Investments

Tax Credit Investments	9 Months Ended
	Sep. 30, 2019
Income Tax Disclosure [Abstract]
Tax Credit Investments	Tax Credit Investments Tax credit investments ("TCIs") are primarily for investments promoting qualified affordable housing projects and investments in community development entities. Investments in these projects generate a return primarily through the realization of federal income tax credits and deductions for operating losses over a specified time period. The TCIs are included in other assets, with any unfunded equity commitments recorded in other liabilities on the Consolidated Balance Sheets. Certain TCIs qualify for the proportional amortization method and are amortized over the period the Corporation expects to receive the tax credits, with the expense included within income taxes on the Consolidated Statements of Income. Other TCIs are accounted for under the equity method of accounting, with amortization included within non-interest expense on the Consolidated Statements of Income. This amortization includes equity in partnership losses and the systematic write-down of investments over the period in which income tax credits are earned. All of the TCIs are evaluated for impairment at the end of each reporting period. The following table presents the balances of the Corporation's TCIs and related unfunded commitments: September 30, December 31, 2019 2018 Recorded in other assets on the Consolidated Balance Sheets: (in thousands) Affordable housing tax credit investment, net $ 159,502 $ 170,401 Other tax credit investments, net 64,922 72,584 Total TCIs, net $ 224,424 $ 242,985 Recorded in other liabilities on the Consolidated Balance Sheets: Unfunded affordable housing tax credit commitments $ 19,727 $ 23,196 Other tax credit investment liabilities 54,623 59,823 Total unfunded tax credit investment commitments and liabilities $ 74,350 $ 83,019 The following table presents other information relating to the Corporation's TCIs: Three Months Ended Nine Months Ended September 30 September 30 2019 2018 2019 2018 Components of income taxes: (in thousands) Affordable housing tax credits and other tax benefits $ (7,852 ) $ (8,555 ) $ (23,002 ) $ (23,642 ) Other tax credit investment credits and tax benefits (1,136 ) (1,596 ) (3,407 ) (4,789 ) Amortization of affordable housing investments, net of tax benefit 5,649 5,459 16,638 16,376 Deferred tax expense 238 336 715 1,007 Total reduction in income tax expense $ (3,101 ) $ (4,356 ) $ (9,056 ) $ (11,048 ) Amortization of TCIs: Affordable housing tax credits investment $ 863 $ 839 $ 2,508 $ 2,517 Other tax credit investment amortization 670 798 2,008 2,394 Total amortization of TCIs $ 1,533 $ 1,637 $ 4,516 $ 4,911

Accumulated Other Comprehensive

Accumulated Other Comprehensive Income	9 Months Ended
	Sep. 30, 2019
Equity [Abstract]
Accumulated Other Comprehensive Income	Accumulated Other Comprehensive Income (Loss) The following table presents changes in other comprehensive income (loss): Before-Tax Amount Tax Effect Net of Tax Amount (in thousands) Three months ended September 30, 2019 Unrealized gain on securities (3) $ 23,150 $ (5,121 ) $ 18,029 Reclassification adjustment for securities gains included in net income (1) (4,492 ) 994 (3,498 ) Amortization of net unrealized losses on AFS securities transferred to held to maturity ("HTM") (2) (3) 4,405 (974 ) 3,430 Amortization of net unrecognized pension and postretirement items (4) 357 (80 ) 277 Total Other Comprehensive Income $ 23,419 $ (5,181 ) $ 18,238 Three months ended September 30, 2018 Unrealized loss on securities $ (15,865 ) $ 3,334 $ (12,531 ) Reclassification adjustment for securities gains included in net income (1) (14 ) 3 (11 ) Amortization of net unrealized losses on AFS securities transferred to HTM (2) 1,000 (209 ) 791 Amortization of net unrecognized pension and postretirement items (4) 466 (97 ) 369 Total Other Comprehensive Loss $ (14,413 ) $ 3,031 $ (11,382 ) Nine months ended September 30, 2019 Unrealized gain on securities (3) $ 81,207 $ (17,963 ) $ 63,244 Reclassification adjustment for securities gains included in net income (1) (4,733 ) 1,047 (3,686 ) Amortization of net unrealized losses on AFS securities transferred to HTM (2) (3) 6,966 (1,541 ) 5,425 Non-credit related unrealized losses on other-than-temporarily impaired debt securities (875 ) 193 (682 ) Amortization of net unrecognized pension and postretirement items (4) 1,083 (240 ) 843 Total Other Comprehensive Income $ 83,648 $ (18,504 ) $ 65,144 Nine months ended September 30, 2018 Unrealized loss on securities $ (59,250 ) $ 12,444 $ (46,806 ) Reclassification adjustment for securities gains included in net income (1) (37 ) 7 (30 ) Amortization of net unrealized losses on AFS securities transferred to HTM (2) 1,000 (209 ) 791 Non-credit related unrealized gains on other-than-temporarily impaired debt securities 294 (62 ) 232 Amortization of net unrecognized pension and postretirement items (4) 1,580 (332 ) 1,248 Total Other Comprehensive Loss $ (56,413 ) $ 11,848 $ (44,565 ) (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 3, "Investment Securities," for additional details. (2) Amounts reclassified out of accumulated other comprehensive income. Before-tax amounts included as a reduction to "Interest Income" on the Consolidated Statements of Income. (3) Before-Tax amount includes a $3.7 million reclassification of unrealized loss related to the early adoption of ASU 2019-04, as disclosed in "Note 1 - Basis of Presentation" from "Amortization of net unrealized losses on AFS securities transferred to HTM" to "Unrealized gain on securities." (4) 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 13, "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 Unrecognized Pension and Postretirement Plan Income (Costs) Total (in thousands) Three months ended September 30, 2019 Balance at June 30, 2019 $ 2,368 $ (2 ) $ (14,523 ) $ (12,157 ) Other comprehensive income before reclassifications 18,029 — — 18,029 Amounts reclassified from accumulated other comprehensive income (loss) (3,498 ) — 277 (3,221 ) Amortization of net unrealized losses on AFS securities transferred to HTM 3,430 — — — 3,430 Balance at September 30, 2019 $ 20,329 $ (2 ) $ (14,246 ) $ 6,081 Three months ended September 30, 2018 Balance at June 30, 2018 $ (56,690 ) $ 690 $ (17,258 ) $ (73,258 ) Other comprehensive loss before reclassifications (12,531 ) — — (12,531 ) Amounts reclassified from accumulated other comprehensive income (loss) (11 ) — 369 358 Amortization of net unrealized losses on AFS securities transferred to HTM 791 — — 791 Balance at September 30, 2018 $ (68,441 ) $ 690 $ (16,889 ) $ (84,640 ) Nine months ended September 30, 2019 Balance at December 31, 2018 $ (44,654 ) $ 680 $ (15,089 ) $ (59,063 ) Other comprehensive income before reclassifications 63,244 (682 ) — 62,562 Amounts reclassified from accumulated other comprehensive income (loss) (3,686 ) — 843 (2,843 ) Amortization of net unrealized losses on AFS securities transferred to HTM 5,425 — — 5,425 Balance at September 30, 2019 $ 20,329 $ (2 ) $ (14,246 ) $ 6,081 Nine months ended September 30, 2018 Balance at December 31, 2017 $ (18,509 ) $ 458 $ (14,923 ) $ (32,974 ) Other comprehensive loss before reclassifications (46,806 ) 232 — (46,574 ) Amounts reclassified from accumulated other comprehensive income (loss) (30 ) — 1,248 1,218 Amortization of net unrealized losses on AFS securities transferred to HTM 791 — — 791 Reclassification of stranded tax effects (3,887 ) — (3,214 ) (7,101 ) Balance at September 30, 2018 $ (68,441 ) $ 690 $ (16,889 ) $ (84,640 )

Fair Value Measurements

Fair Value Measurements	9 Months Ended
	Sep. 30, 2019
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. All assets and liabilities measured at fair value on both a recurring and nonrecurring basis, have been categorized into the above three levels. The following tables present assets and liabilities measured at fair value on a recurring basis and reported on the Consolidated Balance Sheets: September 30, 2019 Level 1 Level 2 Level 3 Total (in thousands) Loans held for sale $ — $ 33,945 $ — $ 33,945 Available for sale investment securities: State and municipal securities — 547,344 — 547,344 Corporate debt securities — 356,036 2,370 358,406 Collateralized mortgage obligations — 700,599 — 700,599 Residential mortgage-backed securities — 183,785 — 183,785 Commercial mortgage-backed securities — 422,109 — 422,109 Auction rate securities — — 103,298 103,298 Total available for sale investment securities — 2,209,873 105,668 2,315,541 Other assets: Investments held in Rabbi Trust 20,853 — — 20,853 Derivative assets 535 195,263 — 195,798 Total assets $ 21,388 $ 2,439,081 $ 105,668 $ 2,566,137 Other liabilities: Deferred compensation liabilities 20,853 — — 20,853 Derivative liabilities 480 105,016 — 105,496 Total liabilities $ 21,333 $ 105,016 $ — $ 126,349 December 31, 2018 Level 1 Level 2 Level 3 Total (in thousands) Loans held for sale $ — $ 27,099 $ — $ 27,099 Available for sale investment securities: U.S. Government sponsored agency securities — 31,632 — 31,632 State and municipal securities — 279,095 — 279,095 Corporate debt securities — 106,258 3,275 109,533 Collateralized mortgage obligations — 832,080 — 832,080 Residential mortgage-backed securities — 463,344 — 463,344 Commercial mortgage-backed securities — 261,616 — 261,616 Auction rate securities — — 102,994 102,994 Total available for sale investment securities — 1,974,025 106,269 2,080,294 Other assets: Investments held in Rabbi Trust 18,415 — — 18,415 Derivative assets 392 62,552 — 62,944 Total assets $ 18,807 $ 2,063,676 $ 106,269 $ 2,188,752 Other liabilities: Deferred compensation liabilities $ 18,415 $ — $ — $ 18,415 Derivative liabilities 381 48,185 — 48,566 Total liabilities $ 18,796 $ 48,185 $ — $ 66,981 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 includes mortgage loans held for sale that are measured at fair value. Fair values as of September 30, 2019 and December 31, 2018 were based on the price that secondary market investors were offering for loans with similar characteristics. See "Note 7 - 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 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 performed for at least 95% of the securities valued by the pricing service. Generally, differences by security in excess of 5% are researched to reconcile the difference. • 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 and senior debt issued by financial institutions ( $336.0 million at September 30, 2019 and $86.1 million at December 31, 2018 ), single-issuer trust preferred securities issued by financial institutions ( $18.5 million at September 30, 2019 and $18.6 million at December 31, 2018 ), pooled trust preferred securities issued by financial institutions ( $0 at September 30, 2019 and $875,000 at December 31, 2018 ) and other corporate debt issued by non-financial institutions ( $3.9 million at September 30, 2019 and December 31, 2018 ). Level 2 investments include the Corporation’s holdings of subordinated debt and senior debt, other corporate debt issued by non-financial institutions and $16.1 million and $16.3 million of single-issuer trust preferred securities held at September 30, 2019 and December 31, 2018 , 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 ( $0 at September 30, 2019 and $875,000 at December 31, 2018 ) and certain single-issuer trust preferred securities ( $2.4 million at September 30, 2019 and December 31, 2018 ). 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. • Investments held in Rabbi Trust – This category consists of mutual funds that are held in trust for employee deferred compensation plans that the Corporation has elected to measure at fair value. Shares of mutual funds are valued based on net asset value, which represent quoted market prices for the underlying shares held in the mutual funds, and as such, are classified as Level 1. • Derivative assets – Fair value of foreign currency exchange contracts classified as Level 1 assets ( $535,000 at September 30, 2019 and $392,000 at December 31, 2018 ). The mutual funds and foreign exchange prices used to measure these items at fair value are based on quoted prices for identical instruments in active markets. Level 2 assets, representing the fair value of mortgage banking derivatives in the form of interest rate locks and forward commitments with secondary market investors ( $1.8 million at September 30, 2019 and $1.2 million at December 31, 2018 ) and the fair value of interest rate swaps ( $193.6 million at September 30, 2019 and $61.4 million at December 31, 2018 ). 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 7 - Derivative Financial Instruments," for additional information. • Deferred compensation liabilities – Fair value of amounts due to employees under deferred compensation plans, classified as Level 1 liabilities and are included in other liabilities on the Consolidated Balance Sheets. The fair values of these liabilities are determined in the same manner as the related assets, as described under the heading "Investments held in Rabbi Trust" above. • Derivative liabilities – Level 1 liabilities, representing the fair value of foreign currency exchange contracts ( $480,000 at September 30, 2019 and $381,000 at December 31, 2018 ). Level 2 liabilities, representing the fair value of mortgage banking derivatives in the form of interest rate locks and forward commitments with secondary market investors ( $287,000 at September 30, 2019 and $1.1 million December 31, 2018 ) and the fair value of interest rate swaps ( $104.7 million at September 30, 2019 and $47.1 million at December 31, 2018 ). The fair values of these liabilities are determined in the same manner as the related assets, as described under the heading "Derivative 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): Pooled Trust Single-issuer ARCs Three months ended September 30, 2019 (in thousands) Balance at June 30, 2019 $ — $ 2,370 $ 103,365 Unrealized adjustment to fair value (1) — (2 ) (67 ) Discount accretion (2) — 2 — Balance at September 30, 2019 $ — $ 2,370 $ 103,298 Three months ended September 30, 2018 Balance at June 30, 2018 $ 875 $ 3,200 $ 103,122 Realized adjustment to fair value — 71 — Unrealized adjustment to fair value (1) — 153 11 Settlements - calls — (950 ) — Discount accretion (2) — 1 — Balance at September 30, 2018 $ 875 $ 2,475 $ 103,133 Nine months ended September 30, 2019 Balance at December 31, 2018 $ 875 $ 2,400 $ 102,994 Sales (770 ) — — Unrealized adjustment to fair value (1) (105 ) (32 ) 304 Discount accretion (2) — 2 — Balance at September 30, 2019 $ — $ 2,370 $ 103,298 Nine months ended September 30, 2018 Balance at December 31, 2017 $ 707 $ 3,050 $ 98,668 Realized adjustment to fair value — 71 — Unrealized adjustment to fair value (1) 168 297 4,465 Settlements - calls — (950 ) — Discount accretion (2) — 7 — Balance at September 30, 2018 $ 875 $ 2,475 $ 103,133 (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 at estimated fair value" 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 Level 3 financial assets measured at fair value on a nonrecurring basis: September 30, 2019 December 31, 2018 (in thousands) Net loans and leases $ 146,682 $ 149,846 OREO 7,706 10,518 MSRs (1) 43,968 50,200 Total assets $ 198,356 $ 210,564 (1) Amounts shown are estimated fair value. MSRs are recorded on the Corporation's Consolidated Balance Sheets at amortized cost. See "Note 5 - Mortgage Servicing Rights" for additional information. The valuation techniques used to measure fair value for the items in the table above are as follows: • Net loans and leases – This category consists of loans and leases that were individually evaluated for impairment and have been classified as Level 3 assets. The amount shown is the balance of impaired loans, net of the related allowance for loan losses. See "Note 4 - Loans and Allowance for Credit Losses," for additional details. • OREO – This category consists of OREO classified as Level 3 assets, for which the fair values were based on estimated selling prices less estimated selling costs for similar assets in active markets. • MSRs - This category consists of MSRs, which were initially recorded at fair value upon the sale of residential mortgage loans to secondary market investors, and subsequently carried at the lower of amortized cost or fair value. 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, 2019 valuation were 10.7% and 10.0% , respectively. Management tests the reasonableness of the significant inputs to the third-party valuation in comparison to market data. See "Note 5 - Mortgage Servicing Rights," for additional information. The following table presents the carrying amounts and estimated fair values of the Corporation’s financial instruments as of September 30, 2019 and December 31, 2018 . A general description of the methods and assumptions used to estimate such fair values follows: September 30, 2019 Estimated Fair Value Carrying Amount Level 1 Level 2 Level 3 Total (in thousands) FINANCIAL ASSETS Cash and cash equivalents $ 598,613 $ 598,613 $ — $ — $ 598,613 FRB and FHLB stock 94,557 — 94,557 — 94,557 Loans held for sale 33,945 — 33,945 — 33,945 Available for sale investment securities 2,315,541 — 2,209,873 105,668 2,315,541 Held to maturity investment securities 390,069 — 403,957 — 403,957 Net loans and leases 16,520,731 — — 16,427,675 16,427,675 Accrued interest receivable 60,447 60,447 — — 60,447 Other assets 478,924 236,599 195,263 51,674 483,536 FINANCIAL LIABILITIES Demand and savings deposits $ 14,105,974 $ 14,105,974 $ — $ — $ 14,105,974 Brokered deposits 256,870 216,870 40,550 — 257,420 Time deposits 2,979,873 — 3,002,796 — 3,002,796 Short-term borrowings 832,860 832,860 — — 832,860 Accrued interest payable 9,622 9,622 — — 9,622 FHLB advances and long-term debt 726,714 — 723,194 — 723,194 Other liabilities 288,477 176,799 105,016 6,662 288,477 December 31, 2018 Estimated Fair Value Carrying Amount Level 1 Level 2 Level 3 Total (in thousands) FINANCIAL ASSETS Cash and cash equivalents $ 445,687 $ 445,687 $ — $ — $ 445,687 FRB and FHLB stock 79,283 — 79,283 — 79,283 Loans held for sale 27,099 — 27,099 — 27,099 Available for sale investment securities 2,080,294 — 1,974,025 106,269 2,080,294 Held to maturity investment securities 606,679 — 611,419 — 611,419 Net loans and leases 16,005,263 — — 15,446,895 15,446,895 Accrued interest receivable 58,879 58,879 — — 58,879 Other assets 235,782 124,138 62,552 49,092 235,782 FINANCIAL LIABILITIES Demand and savings deposits $ 13,478,016 $ 13,478,016 $ — $ — $ 13,478,016 Brokered deposits 176,239 176,239 — — 176,239 Time deposits 2,721,904 — 2,712,296 — 2,712,296 Short-term borrowings 754,777 754,777 — — 754,777 Accrued interest payable 10,529 10,529 — — 10,529 FHLB advances and long-term debt 992,279 — 970,985 — 970,985 Other liabilities 218,061 161,003 48,185 8,873 218,061 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 cash equivalents Demand and savings deposits Accrued interest receivable Short-term borrowings Accrued interest payable FRB and FHLB stock represent restricted investments and are carried at cost on the Consolidated Balance Sheets. As of September 30, 2019, fair values for loans and leases and time deposits were estimated by discounting future cash flows using the current rates, as adjusted for liquidity considerations, at which similar loans and leases would be made to borrowers and similar deposits would be issued to customers for the same remaining maturities. Fair values of loans and leases also include estimated credit losses that would be assumed in a market transaction, which represents estimated exit prices. Brokered deposits consists of demand and saving deposits, which are classified as level 1, and time deposits, which are classified as level 2. The fair value of these deposits are determined in a manner consistent with the respective type of deposits discussed above.

Net Income Per Share

Net Income Per Share	9 Months Ended
	Sep. 30, 2019
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 (in thousands, except per share data): Three months ended September 30 Nine months ended September 30 2019 2018 2019 2018 Weighted average shares outstanding (basic) 165,324 175,942 167,834 175,672 Impact of common stock equivalents 802 1,186 888 1,176 Weighted average shares outstanding (diluted) 166,126 177,128 168,722 176,848 Per share: Basic $ 0.38 $ 0.37 $ 1.06 $ 0.86 Diluted 0.37 0.37 1.06 0.85

Stock-Based Compensation

Stock-Based Compensation	9 Months Ended
	Sep. 30, 2019
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Stock-Based Compensation	Stock-Based Compensation The Corporation grants equity awards to employees in the form of stock options, restricted stock, RSUs or PSUs under its Amended and Restated Equity and Cash Incentive Compensation Plan ("Employee Equity Plan"). Recent grants of equity awards under the Employee Equity Plan have generally been limited to RSUs and PSUs. 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 and subsidiary bank boards of directors under the 2011 Directors’ Equity Participation Plan, which was amended and approved by shareholders as the Amended and Restated Directors’ Equity Participation Plan in 2019 ("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, RSUs or common stock. Recent grants of equity awards under the Directors’ Plan have been limited to RSUs. Equity awards 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 are generally granted annually and become fully vested after a one -year vesting period. Certain events, as defined in the Employee Equity Plan and the Directors' Plan, result in the acceleration of the vesting of equity awards. Fair values for RSUs and a majority of PSUs are based on the trading price of the Corporation’s stock on the date of grant and earn 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, 2019 , the Employee Equity Plan had 10.2 million shares reserved for future grants through 2023 , and the Directors’ Plan had approximately 264,000 shares reserved for future grants through 2029 . 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 2019 2018 2019 2018 (in thousands) Compensation expense $ 2,110 $ 1,823 $ 5,458 $ 6,007 Tax benefit (451 ) (492 ) (1,194 ) (2,028 ) Stock-based compensation expense, net of tax benefit $ 1,659 $ 1,331 $ 4,264 $ 3,979

Employee Benefit Plans

Employee Benefit Plans	9 Months Ended
	Sep. 30, 2019
Retirement Benefits [Abstract]
Employee Benefit Plans	Employee Benefit Plans The net periodic pension 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 2019 2018 2019 2018 (in thousands) Interest cost $ 813 $ 763 $ 2,443 $ 2,290 Expected return on plan assets (688 ) (512 ) (2,066 ) (1,536 ) Net amortization and deferral 496 607 1,486 1,822 Net periodic pension cost $ 621 $ 858 $ 1,863 $ 2,576 The components of the net benefit for the Corporation’s Postretirement Benefits Plan ("Postretirement Plan") consisted of the following components: Three months ended September 30 Nine months ended September 30 2019 2018 2019 2018 (in thousands) Interest cost $ 15 $ 13 $ 45 $ 42 Net accretion and deferral (139 ) (139 ) (417 ) (419 ) Net periodic benefit $ (124 ) $ (126 ) $ (372 ) $ (377 )

Commitments and Contingencies

Commitments and Contingencies	9 Months Ended
	Sep. 30, 2019
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, 2018 (in thousands) Commitments to extend credit $ 6,872,248 $ 6,306,583 Standby letters of credit 308,533 309,352 Commercial letters of credit 48,047 48,682 The Corporation records a reserve for unfunded lending commitments, which represents management’s estimate of incurred losses associated with unused commitments to extend credit and letters of credit. See "Note 4 - Loans and Leases Allowance for Credit Losses," for additional details. Mortgage Repurchase Reserve The Corporation originates and sells residential mortgages to secondary market investors. The Corporation provides customary representations and warranties to secondary market investors that specify, among other things, that the loans have been underwritten to the standards of the secondary market investor. The Corporation may be required to repurchase specific loans, or reimburse the investor for a credit loss incurred on a sold loan if it is determined that the representations and warranties have not been met. Under some agreements with secondary market investors, the Corporation may have additional credit exposure beyond customary representations and warranties, based on the specific terms of those agreements. The Corporation maintains a reserve for estimated losses related to loans sold to investors. As of September 30, 2019 and December 31, 2018, the total reserve for losses on residential mortgage loans sold was $2.5 million and $2.1 million , respectively, including reserves for both representation and warranty and credit loss exposures. Legal Proceedings The Corporation is involved in various pending and threatened claims and other legal proceedings in the ordinary course of its business activities. The Corporation evaluates the possible impact of these matters, taking into consideration the most recent information available. A loss reserve is established for those matters for which the Corporation believes a loss is both probable and reasonably estimable. Once established, the reserve is adjusted as appropriate to reflect any subsequent developments. Actual losses with respect to any such matter may be more or less than the amount estimated by the Corporation. For matters where a loss is not probable, or the amount of the loss cannot be reasonably estimated by the Corporation, no loss reserve is established. In addition, from time to time, the Corporation is involved in 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 companies. These inquiries or investigations could lead to administrative, civil or criminal proceedings involving the Corporation, and could result in fines, penalties, restitution, other types of sanctions, or the need for the Corporation to undertake remedial actions, or to alter its business, financial or accounting practices. The Corporation’s practice is to cooperate fully with regulatory and governmental inquiries and 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 legal proceedings, or regulatory or governmental inquiries or investigations, will not have a material adverse effect on the financial condition of the Corporation. However, legal proceedings, inquiries and investigations 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 in any future period, depending, in part, upon the size of the loss or liability imposed and the operating results for the period, and could have a material adverse effect on the Corporation’s business. In addition, regardless of the ultimate outcome of any such legal proceeding, inquiry or investigation, any such matter could cause the Corporation to incur additional expenses, which could be significant, and possibly material, to the Corporation’s results of operations in any future period. 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. During the third quarter of 2016, the Department informed the Corporation, Fulton Bank, N.A., and three of the Corporation’s other bank subsidiaries, which have since merged with and into Fulton Bank, N.A., 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. As previously disclosed in a Current Report on Form 8-K filed with the SEC on October 4, 2019, on October 3, 2019, the Corporation and Fulton Bank, N.A. received a letter from the Department, which indicated that the Department had completed its review and determined that the circumstances did not require enforcement action by the Department at this time. SEC Investigation The Corporation is responding to an investigation by the staff of the Division of Enforcement of the SEC regarding certain accounting determinations that could have impacted the Corporation’s reported earnings per share. The Corporation believes that its financial statements filed with the SEC in Forms 10-K and 10-Q present fairly, in all material respects, its financial condition, results of operations and cash flows as of or for the periods ending on their respective dates. The Corporation is cooperating fully with the SEC and at this time cannot predict when or how the investigation will be resolved.

Basis of Presentation Basis of

Basis of Presentation Basis of Presentation (Policies)	9 Months Ended
	Sep. 30, 2019
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 ("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 GAAP for complete financial statements. The preparation of financial statements in accordance with 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, 2018 . Operating results for the three and nine months ended September 30, 2019 are not necessarily indicative of the results that may be expected for the year ending December 31, 2019 . The Corporation evaluates subsequent events through the date of filing of this Form 10-Q with the U.S. Securities and Exchange Commission ("SEC").
Recently Issued Accounting Standards	Recently Adopted Accounting Standards ASC Update 2016-02 - In February 2016, the Financial Accounting Standards Board ("FASB") issued ASC Update 2016-02, "Leases (Topic 842)." This standards update requires a lessee to recognize for all leases with an initial term greater than twelve months: (1) a "right-of-use" ("ROU") asset, which is an asset that represents the lessee’s right to use, or control the use of, a specified asset for the lease term; and (2) a lease liability, which is a lessee’s obligation to make lease payments arising from a lease, each measured on a discounted basis. This standards update is effective for interim and annual reporting periods beginning after December 15, 2018, with early adoption permitted. The Corporation adopted ASC Update 2016-02 in the first quarter of 2019 using the alternative transition method, which eliminates the requirement to restate the earliest prior period presented in an entity’s financial statements. As such, financial information will not be updated and the disclosures required under the new standard will not be provided for dates and periods before January 1, 2019. This standards update provides for a number of practical expedients in transition. The Corporation elected to apply the package of practical expedients permitted within the new standard, which, among other things, allowed it to carryforward the prior conclusions on lease identification, lease classification and initial direct costs. In addition, the Corporation elected to not separate lease and non-lease components. The Corporation did not elect the practical expedient to apply hindsight in determining the lease term and in assessing impairment of the ROU assets. See "Note 6 - Leases" for additional information and expanded lessee disclosures. This standards update also provides additional guidance on lessor accounting. The Corporation provides equipment lease financing to its customers, which are categorized as direct financing leases. The adoption of this standards update did not result in any changes to the accounting for this type of lease as the lessor. ASC Update 2019-04 - In April 2019, the FASB issued ASC Update 2019-04, "Codification Improvements to Topic 326, Financial Instruments - Credit Losses, Topic 815, Derivatives and Hedging, and Topic 825, Financial Instruments." The Corporation adopted this standard in the third quarter of 2019, which permitted the one-time reclassification of certain held to maturity investment securities to available for sale under Topic 815, specific to the transition guidance of ASU update 2017-12, which the Corporation adopted on January 1, 2019. See “Note 3 - Investment Securities” for additional information on this reclassification. The portion of this standards update related to codification improvements specific to Topic 326 will be implemented upon the Corporation’s adoption of ASU 2016-13 in the first quarter of 2020. Additional codification improvements to Topic 825, specifically ASU 2016-01, which the Corporation adopted as of January 1, 2018, did not have an impact on the Company’s Consolidated Financial Statements. Recently Issued Accounting Standards Standard Description Date of Anticipated Adoption Effect on Financial Statements ASC Update 2016-13 Financial Instruments - Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments The new impairment model prescribed by this standards update applies to all financial assets (i.e., loans and held to maturity investments) and certain off-balance sheet credit exposures. The recognition of credit losses will 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 incurred under current GAAP. This update also requires new disclosures for financial assets measured at amortized cost, loans and available-for-sale debt securities. Entities will apply the standard's provisions as a cumulative-effect adjustment to retained earnings as of the beginning of the first reporting period in which the guidance is adopted. This adjustment will also be recognized in regulatory capital. This update is effective for interim and annual reporting periods beginning after December 15, 2019 (January 1, 2020 for the Corporation). Early adoption is permitted. In November 2018, the FASB issued ASC Update 2018-19, "Codifications Improvements to Topic 326, Financial Instruments - Credit Losses" which clarifies that receivables arising from operating leases are accounted for using lease guidance and not as financial instruments. ASC Update 2019-04 and 2019-05 were issued to provide certain clarifications and transition relief to adopting this standards update. First Quarter of 2020 The Corporation intends to adopt these standards updates effective with its March 31, 2020 quarterly report on Form 10-Q. The allowance for credit losses ("ACL") will be based on the Corporation’s historical loss experience, borrower characteristics, forecasts of future economic conditions and other relevant factors. The Corporation will use models and other loss estimation techniques that are responsive to changes in forecasted economic conditions, to interpret borrower and economic factors in order to estimate the ACL. The Corporation will also apply qualitative factors to account for information that may not be reflected in quantitatively derived results, or other relevant factors to ensure the ACL reflects the best estimate of current expected credit losses. Preliminary expected loss estimates have been determined and continue to be validated and reviewed. The Corporation believes that the total allowance for credit losses will increase at the adoption date and that the magnitude of the increase will depend on the composition, characteristics and quality of its loan portfolio and its off-balance sheet credit exposures, as well as the prevailing economic conditions and forecasts as of the adoption date. The Corporation will continue to make refinements to its expected credit loss estimates throughout the remainder of 2019, including refinement of certain models, estimation techniques and the finalization of the operational and control structure supporting the end-to-end process. The Corporation will be adopting the option to phase in over a three-year period the day-one impact of this standards update on regulatory capital afforded to it in the Final Rule published in the Federal Register on February 14, 2019 by Office of the Comptroller of the Currency, the Board of Governors of the Federal Reserve System and the Federal Deposit Insurance Corporation. Standard Description Date of Anticipated Adoption Effect on Financial Statements ASC Update 2017-04 Intangibles - Goodwill and Other (Topic 350): Simplifying the Test for Goodwill Impairment The FASB issued this update to simplify the subsequent quantitative measurement of goodwill by eliminating Step 2 of the goodwill impairment test. Instead, 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 amounts 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. This update is effective for annual or interim goodwill impairment tests in reporting periods beginning after December 15, 2019. Early adoption is permitted. Fourth Quarter of 2019, in connection with the annual impairment test The Corporation does not expect the adoption of this update to have a material impact on its Consolidated Financial Statements. The Corporation has not needed to perform Step 2 since its impairment test completed in 2012. ASC Update 2018-13 Fair Value Measurement (Topic 820): Disclosure Framework - Changes to the Disclosure Requirements for Fair Value Measurement This update changes the fair value measurement disclosure requirements of ASC Topic 820 "Fair Value Measurement." Among other things, the update modifies the disclosure objective paragraphs of ASC 820 to eliminate: (1) "at a minimum" from the phrase "an entity shall disclose at a minimum;" and (2) other similar disclosure requirements to promote the appropriate exercise of discretion by entities. First Quarter of 2020 The Corporation intends to adopt this standards update effective with its March 31, 2020 quarterly report on Form 10-Q. This standard will impact the Corporation's Fair Value Measurement disclosure, but the Corporation does not expect the adoption of this update to have a material impact on its Consolidated Financial Statements. ASC Update 2018-14 Compensation - Retirement Benefits - Defined Benefit Plans - General (Subtopic 715-20): Disclosure Framework - Changes to the Disclosure Requirements for Defined Benefit Plans This update amends ASC Topic 715-20 to add, remove, and clarify disclosure requirements related to defined benefit pension and other postretirement plans. This update is effective for annual reporting periods beginning after December 15, 2020. Early adoption is permitted. First Quarter of 2021 The Corporation intends to adopt this standards update effective with its March 31, 2021 quarterly report on Form 10-Q. This standard will impact the Corporation's disclosure relating to employee benefit plans, but the Corporation does not expect the adoption of this update to have a material impact on its Consolidated Financial Statements. ASC Update 2018-15 Intangibles - Goodwill and Other - Internal Use Software (Topic 350-40): Customer’s Accounting for Implementation Costs Incurred in a Cloud Computing Arrangement that is a Service Contract This update requires a customer in a cloud computing arrangement that is a service contract to follow the internal-use software guidance in ASC Subtopic 350-40 to determine which implementation costs to capitalize as assets. This update is effective for annual or interim reporting periods beginning after December 15, 2019. Early adoption is permitted. First Quarter of 2020 The Corporation intends to adopt this standards update effective with its March 31, 2020 quarterly report on Form 10-Q and does not expect the adoption of this update to have a material impact on its Consolidated Financial Statements. Reclassifications

Investment Securities (Tables)

Investment Securities (Tables)	9 Months Ended
	Sep. 30, 2019
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: September 30, 2019 Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Estimated Fair Value (in thousands) Available for Sale State and municipal securities $ 530,448 $ 17,000 $ (104 ) $ 547,344 Corporate debt securities 353,771 7,030 (2,395 ) 358,406 Collateralized mortgage obligations 686,577 14,120 (98 ) 700,599 Residential mortgage-backed securities 183,696 1,162 (1,073 ) 183,785 Commercial mortgage-backed securities 413,011 9,145 (47 ) 422,109 Auction rate securities 107,410 — (4,112 ) 103,298 Total $ 2,274,913 $ 48,457 $ (7,829 ) $ 2,315,541 Held to Maturity Residential mortgage-backed securities 390,069 13,888 — 403,957 Total $ 390,069 $ 13,888 $ — $ 403,957 December 31, 2018 Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Estimated Fair Value (in thousands) Available for Sale U.S. Government sponsored agency securities $ 31,586 $ 185 $ (139 ) $ 31,632 State and municipal securities 282,383 2,178 (5,466 ) 279,095 Corporate debt securities 111,454 1,432 (3,353 ) 109,533 Collateralized mortgage obligations 841,294 2,758 (11,972 ) 832,080 Residential mortgage-backed securities 476,973 1,583 (15,212 ) 463,344 Commercial mortgage-backed securities 264,165 524 (3,073 ) 261,616 Auction rate securities 107,410 — (4,416 ) 102,994 Total $ 2,115,265 $ 8,660 $ (43,631 ) $ 2,080,294 Held to Maturity State and municipal securities $ 156,134 $ 1,166 $ (93 ) $ 157,207 Residential mortgage-backed securities 450,545 3,667 — 454,212 Total $ 606,679 $ 4,833 $ (93 ) $ 611,419
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, 2019 , 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. Available for Sale Held to Maturity Amortized Estimated Amortized Estimated (in thousands) Due in one year or less $ 3,722 $ 3,722 $ — $ — Due from one year to five years 38,518 39,747 — — Due from five years to ten years 332,514 337,519 — — Due after ten years 616,875 628,060 — — 991,629 1,009,048 — — Residential mortgage-backed securities (1) 183,696 183,785 390,069 403,957 Commercial mortgage-backed securities (1) 413,011 422,109 — — Collateralized mortgage obligations (1) 686,577 700,599 — — Total $ 2,274,913 $ 2,315,541 $ 390,069 $ 403,957 (1) Mortgage-backed securities and collateralized mortgage obligations do not have stated maturities and are dependent upon the interest rate environment and prepayments on the underlying loans.
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 investment securities: Gross Gross Net Gains Three months ended September 30, 2019 (in thousands) Debt securities $ 7,938 $ (3,446 ) $ 4,492 Total $ 7,938 $ (3,446 ) $ 4,492 Three months ended September 30, 2018 Debt securities $ 116 $ (102 ) $ 14 Total $ 116 $ (102 ) $ 14 Nine months ended September 30, 2019 Debt securities $ 11,207 $ (6,474 ) $ 4,733 Total $ 11,207 $ (6,474 ) $ 4,733 Nine months ended September 30, 2018 Equity securities $ 9 $ — $ 9 Debt securities 1,656 (1,628 ) 28 Total $ 1,665 $ (1,628 ) $ 37
Summary of Cumulative Credit Related Other-Than-Temporary Impairment Charges Recognized As Components of Earnings	The following table presents a summary of the cumulative credit related other-than-temporary impairment charges, recognized as components of earnings, for debt securities held by the Corporation at September 30, 2019 and 2018: Three months ended September 30 Nine months ended September 30 2019 2018 2019 2018 (in thousands) Balance of cumulative credit losses on debt securities, beginning of period $ (990 ) $ (11,510 ) $ (11,510 ) $ (11,510 ) Reductions for securities sold during the period — — 10,520 — Balance of cumulative credit losses on debt securities, end of period $ (990 ) $ (11,510 ) $ (990 ) $ (11,510 )
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, 2019 and December 31, 2018: September 30, 2019 Less than 12 months 12 months or longer Total Number of Securities Estimated Fair Value Unrealized Losses Number of Securities Estimated Fair Value Unrealized Losses Estimated Fair Value Unrealized Losses Available for Sale (in thousands) State and municipal securities 5 $ 17,058 $ (104 ) — $ — $ — $ 17,058 $ (104 ) Corporate debt securities 9 72,569 (313 ) 13 25,729 (2,082 ) 98,298 (2,395 ) Collateralized mortgage obligations 4 5,734 (2 ) 5 5,886 (96 ) 11,620 (98 ) Residential mortgage-backed securities 3 9,159 (29 ) 28 135,616 (1,044 ) 144,775 (1,073 ) Commercial mortgage-backed securities 1 11,843 (47 ) — — — 11,843 (47 ) Auction rate securities — — — 177 103,298 (4,112 ) 103,298 (4,112 ) Total (1) 22 $ 116,363 $ (495 ) 223 $ 270,529 $ (7,334 ) $ 386,892 $ (7,829 ) (1) No Held to Maturity investments were in an unrealized loss position at September 30, 2019. December 31, 2018 Less than 12 months 12 months or longer Total Number of Securities Estimated Unrealized Number of Securities Estimated Unrealized Estimated Unrealized Available for Sale (in thousands) U.S. Government sponsored agency securities 1 $ 4,961 $ (31 ) 1 $ 5,770 $ (108 ) $ 10,731 $ (139 ) State and municipal securities 33 72,950 (1,292 ) 38 83,770 (4,174 ) 156,720 (5,466 ) Corporate debt securities 8 24,419 (227 ) 14 25,642 (3,126 ) 50,061 (3,353 ) Collateralized mortgage obligations 39 136,563 (1,050 ) 89 388,173 (10,922 ) 524,736 (11,972 ) Residential mortgage-backed securities 17 18,220 (222 ) 110 402,779 (14,990 ) 420,999 (15,212 ) Commercial mortgage-backed securities 1 9,778 (35 ) 25 197,326 (3,038 ) 207,104 (3,073 ) Auction rate securities — — — 177 102,994 (4,416 ) 102,994 (4,416 ) Total 99 $ 266,891 $ (2,857 ) 454 $ 1,206,454 $ (40,774 ) $ 1,473,345 $ (43,631 ) Held to Maturity State and municipal securities 6 $ 20,601 $ (93 ) — $ — $ — $ 20,601 $ (93 ) Total 6 $ 20,601 $ (93 ) — $ — $ — $ 20,601 $ (93 )

Loans and Allowance for Credi_2

Loans and Allowance for Credit Losses (Tables)	9 Months Ended
	Sep. 30, 2019
Financing Receivable, Modifications [Line Items]
Summary of Gross Loans by Type	Loans and leases, net of unearned income are summarized as follows: September 30, December 31, 2018 (in thousands) Real-estate - commercial mortgage $ 6,604,634 $ 6,434,285 Commercial - industrial, financial and agricultural 4,494,496 4,404,548 Real estate - residential mortgage 2,570,793 2,251,044 Real estate - home equity 1,346,115 1,452,137 Real estate - construction 913,644 916,599 Consumer 464,213 419,186 Equipment lease financing and other 316,880 311,866 Overdrafts 2,929 2,774 Loans and leases, gross of unearned income 16,713,704 16,192,439 Unearned income (26,838 ) (26,639 ) Loans and leases, net of unearned income $ 16,686,866 $ 16,165,800
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 and lease losses $ 166,135 $ 160,537 Reserve for unfunded lending commitments 6,662 8,873 Allowance for credit losses $ 172,797 $ 169,410
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 2019 2018 2019 2018 (in thousands) Balance at beginning of period $ 176,941 $ 169,247 $ 169,410 $ 176,084 Loans and leases charged off (10,128 ) (6,883 ) (20,208 ) (55,440 ) Recoveries of loans and leases previously charged off 3,814 3,842 11,300 8,475 Net loans and leases charged off (6,314 ) (3,041 ) (8,908 ) (46,965 ) Provision for credit losses 2,170 1,620 12,295 38,707 Balance at end of period $ 172,797 $ 167,826 $ 172,797 $ 167,826 The following table presents the activity in the allowance for loan and lease 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 Equipment lease financing, other and overdrafts Total (in thousands) Three months ended September 30, 2019 Balance at June 30, 2019 $ 54,859 $ 66,341 $ 18,981 $ 18,892 $ 4,928 $ 3,363 $ 2,869 $ 170,233 Loans and leases charged off (394 ) (7,181 ) (498 ) (533 ) (45 ) (877 ) (600 ) (10,128 ) Recoveries of loans and leases previously charged off 444 2,311 132 440 164 216 107 3,814 Net loans and leases recovered (charged off) 50 (4,870 ) (366 ) (93 ) 119 (661 ) (493 ) (6,314 ) Provision for loan and lease losses (1) (5,529 ) 7,710 (662 ) (109 ) (664 ) 798 672 2,216 Balance at September 30, 2019 $ 49,380 $ 69,181 $ 17,953 $ 18,690 $ 4,383 $ 3,500 $ 3,048 $ 166,135 Three months ended September 30, 2018 Balance at June 30, 2018 $ 56,583 $ 59,045 $ 16,247 $ 14,504 $ 5,988 $ 1,699 $ 1,984 $ 156,050 Loans and leases charged off (650 ) (3,541 ) (743 ) (483 ) (212 ) (672 ) (582 ) (6,883 ) Recoveries of loans and leases previously charged off 928 731 217 317 664 390 595 3,842 Net loans and leases recovered (charged off) 278 (2,810 ) (526 ) (166 ) 452 (282 ) 13 (3,041 ) Provision for loan and lease losses (1) (2,750 ) (301 ) 2,890 3,774 (961 ) 1,429 720 4,801 Balance at September 30, 2018 $ 54,111 $ 55,934 $ 18,611 $ 18,112 $ 5,479 $ 2,846 $ 2,717 $ 157,810 Nine months ended September 30, 2019 Balance at December 31, 2018 $ 52,889 $ 58,868 $ 18,911 $ 18,921 $ 5,061 $ 3,217 $ 2,670 $ 160,537 Loans and leases charged off (1,769 ) (11,863 ) (923 ) (1,322 ) (143 ) (2,355 ) (1,833 ) (20,208 ) Recoveries of loans and leases previously charged off 749 6,234 552 783 1,493 1,005 484 11,300 Net loans and leases recovered (charged off) (1,020 ) (5,629 ) (371 ) (539 ) 1,350 (1,350 ) (1,349 ) (8,908 ) Provision for loan losses (1) (2,489 ) 15,942 (587 ) 308 (2,028 ) 1,633 1,727 14,506 Balance at September 30, 2019 $ 49,380 $ 69,181 $ 17,953 $ 18,690 $ 4,383 $ 3,500 $ 3,048 $ 166,135 Nine months ended September 30, 2018 Balance at December 31, 2017 $ 58,793 $ 66,280 $ 18,127 $ 16,088 $ 6,620 $ 2,045 $ 1,957 $ 169,910 Loans and leases charged off (1,283 ) (46,178 ) (1,967 ) (1,128 ) (976 ) (2,276 ) (1,632 ) (55,440 ) Recoveries of loans and leases previously charged off 1,528 2,347 694 520 1,414 1,015 957 8,475 Net loans and leases recovered (charged off) 245 (43,831 ) (1,273 ) (608 ) 438 (1,261 ) (675 ) (46,965 ) Provision for loan losses (1) (4,927 ) 33,485 1,757 2,632 (1,579 ) 2,062 1,435 34,865 Balance at September 30, 2018 $ 54,111 $ 55,934 $ 18,611 $ 18,112 $ 5,479 $ 2,846 $ 2,717 $ 157,810 (1) The provision for loan and lease losses excluded a $ 46,000 and a $2.2 million decrease in the reserve for unfunded lending commitments for the three and nine months ended September 30, 2019 , respectively, and a $3.2 million decrease and a $3.8 million increase in the reserve for unfunded lending commitments for the three and nine months ended September 30, 2018, respectively. The following table presents loans and leases, net of unearned income and their related allowance for loan and lease 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 Equipment lease financing, other and overdrafts Total (in thousands) Allowance for loan and lease losses at September 30, 2019: Collectively evaluated for impairment $ 42,766 $ 58,722 $ 8,033 $ 9,678 $ 3,970 $ 3,495 $ 2,944 $ 129,608 Individually evaluated for impairment 6,614 10,459 9,920 9,012 413 5 104 36,527 $ 49,380 $ 69,181 $ 17,953 $ 18,690 $ 4,383 $ 3,500 $ 3,048 $ 166,135 Loans and leases, net of unearned income at September 30, 2019: Collectively evaluated for impairment $ 6,543,781 $ 4,453,062 $ 1,323,950 $ 2,533,295 $ 909,811 $ 464,206 $ 275,552 $ 16,503,657 Individually evaluated for impairment 60,853 41,434 22,165 37,498 3,833 7 17,419 183,209 $ 6,604,634 $ 4,494,496 $ 1,346,115 $ 2,570,793 $ 913,644 $ 464,213 $ 292,971 $ 16,686,866 Allowance for loan and lease losses at September 30, 2018: Collectively evaluated for impairment $ 46,812 $ 47,028 $ 7,856 $ 8,369 $ 4,718 $ 2,841 $ 2,717 $ 120,341 Individually evaluated for impairment 7,299 8,906 10,755 9,743 761 5 — 37,469 $ 54,111 $ 55,934 $ 18,611 $ 18,112 $ 5,479 $ 2,846 $ 2,717 $ 157,810 Loans and leases, net of unearned income at September 30, 2018: Collectively evaluated for impairment $ 6,290,143 $ 4,235,953 $ 1,444,898 $ 2,133,718 $ 971,167 $ 390,700 $ 285,021 $ 15,751,600 Individually evaluated for impairment 47,841 52,870 24,254 39,830 8,690 8 — 173,493 $ 6,337,984 $ 4,288,823 $ 1,469,152 $ 2,173,548 $ 979,857 $ 390,708 $ 285,021 $ 15,925,093
Total Impaired Loans by Class Segment	The following table presents total impaired loans and leases by class segment: September 30, 2019 December 31, 2018 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 $ 31,305 $ 29,156 $ — $ 25,095 $ 23,481 $ — Commercial 27,060 21,617 — 33,493 26,585 — Real estate - residential mortgage 4,531 4,368 — 3,149 3,149 — Construction 6,449 2,598 — 8,980 5,083 — Equipment lease financing 19,269 17,003 — 19,269 19,268 — 88,614 74,742 — 89,986 77,566 — With a related allowance recorded: Real estate - commercial mortgage 38,393 31,697 6,614 29,005 22,592 7,255 Commercial 29,146 19,817 10,459 37,706 28,708 12,513 Real estate - residential mortgage 37,559 33,130 9,012 39,972 35,621 9,394 Real estate - home equity 25,317 22,165 9,920 26,599 23,373 10,370 Real estate - construction 4,724 1,235 413 5,984 2,307 793 Consumer 7 7 5 11 11 7 Equipment lease financing 416 416 104 — — — 135,562 108,467 36,527 139,277 112,612 40,332 Total $ 224,176 $ 183,209 $ 36,527 $ 229,263 $ 190,178 $ 40,332 As of September 30, 2019 and December 31, 2018 , there were $74.7 million and $77.6 million , respectively, of impaired loans and leases that did not have a related allowance for loan and lease losses. The estimated fair values of the collateral securing these loans and leases exceeded their carrying amount, or the loans and leases 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 and leases by class segment: Three months ended September 30 Nine months ended September 30 2019 2018 2019 2018 Average Interest (1) Average Interest (1) Average Interest (1) Average Interest (1) (in thousands) With no related allowance recorded: Real estate - commercial mortgage $ 29,865 $ 94 $ 26,051 $ 94 $ 27,028 $ 291 $ 25,702 $ 274 Commercial 22,603 30 30,157 66 24,670 92 35,098 208 Real estate - residential mortgage 4,384 26 3,182 20 3,761 69 3,872 71 Real estate -construction 2,601 — 6,845 — 3,827 — 7,408 — Equipment lease financing 17,381 — — — 18,136 — — — 76,834 150 66,235 180 77,422 452 72,080 553 With a related allowance recorded: Real estate - commercial mortgage 30,508 96 23,734 85 25,837 268 24,727 260 Commercial 23,906 32 23,687 51 26,373 101 23,934 149 Real estate - home equity 22,874 210 24,628 202 23,237 655 24,690 581 Real estate - residential mortgage 33,035 198 36,396 227 34,535 638 36,578 671 Real estate -construction 1,399 — 2,061 — 1,683 — 2,778 — Consumer 8 — 10 — 10 — 18 — Equipment lease financing 208 — — — 104 — — — 111,938 536 110,516 565 111,779 1,662 112,725 1,661 Total $ 188,772 $ 686 $ 176,751 $ 745 $ 189,201 $ 2,114 $ 184,805 $ 2,214 (1) All impaired loans and leases were either TDRs or non-accrual loans and leases. Interest income recognized for the three and nine months ended September 30, 2019 and 2018 represented amounts earned on accruing TDRs.
Financing Receivable Credit Quality Indicators	The following table presents a summary of performing, delinquent and non-performing loans and leases for the indicated class segments: Performing Delinquent (1) Non-performing (2) Total September 30, 2019 December 31, 2018 September 30, 2019 December 31, 2018 September 30, 2019 December 31, 2018 September 30, 2019 December 31, 2018 (dollars in thousands) Real estate - home equity $ 1,325,900 $ 1,431,666 $ 9,445 $ 10,702 $ 10,770 $ 9,769 $ 1,346,115 $ 1,452,137 Real estate - residential mortgage 2,526,551 2,202,955 24,092 28,988 20,150 19,101 2,570,793 2,251,044 Construction - other 82,787 71,511 1,296 — 187 490 84,270 72,001 Consumer - direct 64,066 55,629 641 338 94 66 64,801 56,033 Consumer - indirect 395,919 359,405 3,345 3,405 148 343 399,412 363,153 Total consumer 459,985 415,034 3,986 3,743 242 409 464,213 419,186 Equipment lease financing, other and overdrafts 274,239 267,112 1,066 1,302 17,666 19,587 292,971 288,001 $ 4,669,462 $ 4,388,278 $ 39,885 $ 44,735 $ 49,015 $ 49,356 $ 4,758,362 $ 4,482,369 % of Total 98.1 % 97.9 % 0.9 % 1.0 % 1.0 % 1.1 % 100.0 % 100.0 % (1) Includes all accruing loans and leases 30 days to 89 days past due. (2) Includes all accruing loans and leases 90 days or more past due and all non-accrual loans and leases. The following table presents internal credit risk ratings for the indicated loan class segments: Pass Special Mention Substandard or Lower Total September 30, 2019 December 31, 2018 September 30, 2019 December 31, 2018 September 30, 2019 December 31, 2018 September 30, 2019 December 31, 2018 (dollars in thousands) Real estate - commercial mortgage $ 6,290,567 $ 6,129,463 $ 142,136 $ 170,827 $ 171,931 $ 133,995 $ 6,604,634 $ 6,434,285 Commercial - secured 3,926,856 3,902,484 198,592 193,470 184,584 129,026 4,310,032 4,224,980 Commercial - unsecured 175,761 171,589 5,082 4,016 3,621 3,963 184,464 179,568 Total commercial - industrial, financial and agricultural 4,102,617 4,074,073 203,674 197,486 188,205 132,989 4,494,496 4,404,548 Construction - commercial residential 112,163 104,079 2,871 6,912 3,627 6,881 118,661 117,872 Construction - commercial 707,290 723,030 719 1,163 2,704 2,533 710,713 726,726 Total construction (excluding Construction - other) 819,453 827,109 3,590 8,075 6,331 9,414 829,374 844,598 $ 11,212,637 $ 11,030,645 $ 349,400 $ 376,388 $ 366,467 $ 276,398 $ 11,928,504 $ 11,683,431 % of Total 94.0 % 94.4 % 2.9 % 3.2 % 3.1 % 2.4 % 100.0 % 100.0 %
Non-Performing Assets	The following table presents non-performing assets: September 30, December 31, (in thousands) Non-accrual loans and leases $ 124,287 $ 128,572 Loans and leases 90 days or more past due and still accruing 11,689 11,106 Total non-performing loans and leases 135,976 139,678 Other real estate owned (OREO) 7,706 10,518 Total non-performing assets $ 143,682 $ 150,196
Past due Loan Status and Non-Accrual Loans by Portfolio Segment	The following tables present past due status and non-accrual loans and leases by portfolio segment and class segment: September 30, 2019 30-59 Days Past Due 60-89 Days Past Due ≥ 90 Days Past Due and Accruing Non- accrual Total Past Due and Non-accrual Current Total (in thousands) Real estate - commercial mortgage $ 25,100 $ 4,292 $ 1,301 $ 44,409 $ 75,102 $ 6,529,532 $ 6,604,634 Commercial - secured 3,234 1,961 731 35,664 41,590 4,268,442 4,310,032 Commercial - unsecured 91 85 153 578 907 183,557 184,464 Total commercial - industrial, financial and agricultural 3,325 2,046 884 36,242 42,497 4,451,999 4,494,496 Real estate - home equity 7,063 2,382 4,122 6,648 20,215 1,325,900 1,346,115 Real estate - residential mortgage 17,801 6,291 4,414 15,736 44,242 2,526,551 2,570,793 Construction - commercial residential 1,326 — 479 3,627 5,432 113,229 118,661 Construction - commercial 392 — — 19 411 710,302 710,713 Construction - other 1,296 — — 187 1,483 82,787 84,270 Total real estate - construction 3,014 — 479 3,833 7,326 906,318 913,644 Consumer - direct 521 120 94 — 735 64,066 64,801 Consumer - indirect 2,890 455 148 — 3,493 395,919 399,412 Total consumer 3,411 575 242 — 4,228 459,985 464,213 Equipment lease financing, other and overdrafts 923 143 247 17,419 18,732 274,239 292,971 Total $ 60,637 $ 15,729 $ 11,689 $ 124,287 $ 212,342 $ 16,474,524 $ 16,686,866 December 31, 2018 30-59 Days Past Due 60-89 Days Past Due ≥ 90 Days Past Due and Accruing Non- accrual Total Past Due and Non-accrual Current Total (in thousands) Real estate - commercial mortgage $ 12,206 $ 1,500 $ 1,765 $ 30,388 $ 45,859 $ 6,388,426 $ 6,434,285 Commercial - secured 5,227 938 1,068 49,299 56,532 4,168,448 4,224,980 Commercial - unsecured 1,598 — 51 851 2,500 177,068 179,568 Total commercial - industrial, financial and agricultural 6,825 938 1,119 50,150 59,032 4,345,516 4,404,548 Real estate - home equity 7,144 3,558 3,061 6,708 20,471 1,431,666 1,452,137 Real estate - residential mortgage 20,796 8,192 4,433 14,668 48,089 2,202,955 2,251,044 Construction - commercial residential 2,489 — — 6,881 9,370 108,502 117,872 Construction - commercial — — — 19 19 726,707 726,726 Construction - other — — — 490 490 71,511 72,001 Total real estate - construction 2,489 — — 7,390 9,879 906,720 916,599 Consumer - direct 267 71 66 — 404 55,629 56,033 Consumer - indirect 2,908 497 343 — 3,748 359,405 363,153 Total consumer 3,175 568 409 — 4,152 415,034 419,186 Equipment lease financing, other and overdrafts 1,005 297 319 19,268 20,889 267,112 288,001 Total $ 53,640 $ 15,053 $ 11,106 $ 128,572 $ 208,371 $ 15,957,429 $ 16,165,800
Troubled Debt Restructurings on Financing Receivables	The following table presents TDRs, by class segment: September 30, December 31, (in thousands) Real estate - residential mortgage $ 21,762 $ 24,102 Real estate - commercial mortgage 16,444 15,685 Real estate - home equity 15,505 16,665 Commercial 5,192 5,143 Consumer 7 10 Total accruing TDRs 58,910 61,605 Non-accrual TDRs (1) 23,553 28,659 Total TDRs $ 82,463 $ 90,264 (1)
Loan Terms Modified Under Troubled Debt Restructurings	he following table presents TDRs, by class segment, as of September 30, 2019 and 2018 that were modified in the previous 12 months and had a post-modification payment default during the nine months ended September 30, 2019 and 2018 . The Corporation defines a payment default as a single missed payment. 2019 2018 Number of Loans Recorded Investment Number of Loans Recorded Investment (dollars in thousands) Real estate - residential mortgage 1 $ 231 6 $ 724 Real estate - commercial mortgage — — 2 452 Real estate - home equity 16 657 25 1,591 Commercial 4 190 4 5,042 Total 21 $ 1,078 37 $ 7,809 The following table presents TDRs, by class segment, for loans that were modified during the three and nine months ended September 30, 2019 and 2018: Three months ended September 30 Nine months ended September 30 2019 2018 2019 2018 Number of Loans Recorded Investment Number of Loans Recorded Investment Number of Loans Recorded Investment Number of Loans Recorded Investment (dollars in thousands) Real estate - residential mortgage 1 $ 830 4 $ 597 6 $ 2,263 6 $ 679 Real estate - commercial mortgage 1 81 — — 1 81 — — Real estate - home equity 12 327 24 1,002 46 2,281 71 4,045 Commercial 3 97 2 913 13 4,928 13 10,325 Total 17 $ 1,335 30 $ 2,512 66 $ 9,553 90 $ 15,049

Mortgage Servicing Rights (Tabl

Mortgage Servicing Rights (Tables)	9 Months Ended
	Sep. 30, 2019
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 2019 2018 2019 2018 (in thousands) Amortized cost: Balance at beginning of period $ 38,826 $ 37,894 $ 38,573 $ 37,663 Originations of mortgage servicing rights 2,499 2,018 5,585 5,247 Amortization (1,970 ) (1,684 ) (4,803 ) (4,682 ) Balance at end of period $ 39,355 $ 38,228 $ 39,355 $ 38,228

Leases (Tables)

Leases (Tables)	9 Months Ended
	Sep. 30, 2019
Leases [Abstract]
Lease Cost and Supplemental Cash Flow Information	The following table presents the components of lease expense, which is included in net occupancy expense on the Consolidated Statements of Income (in thousands): Three months ended Nine months ended September 30, 2019 September 30, 2019 Operating lease expense $ 4,654 $ 14,140 Variable lease expense 786 2,156 Sublease income (239 ) (610 ) Total lease expense $ 5,201 $ 15,686 Supplemental cash flow information related to operating leases was as follows (in thousands): Nine months ended September 30, 2019 Cash paid for amounts included in the measurement of lease liabilities $ 13,913 ROU assets obtained in exchange for lease obligations 115,681
Supplemental Balance Sheet Information	Supplemental balance sheet information related to leases was as follows (dollars in thousands): Operating Leases Balance Sheet Classification September 30, 2019 ROU assets Other assets $ 104,746 Lease liabilities Other liabilities $ 111,617 Weighted average remaining lease term 8.3 years Weighted average discount rate 3.05 %
Schedule of Lease Payment Obligations For Each of the Next Five Years	Lease payment obligations for each of the next five years and thereafter, with a reconciliation to the Corporation's lease liability were as follows (in thousands): Year Operating Leases For the three months ending December 31, 2019 $ 6,304 2020 18,761 2021 17,623 2022 16,349 2023 14,094 Thereafter 54,809 Total lease payments 127,940 Less: imputed interest (16,323 ) Present value of lease liabilities $ 111,617

Derivative Financial Instrume_2

Derivative Financial Instruments (Tables)	9 Months Ended
	Sep. 30, 2019
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, 2019 December 31, 2018 Notional Asset Notional Asset (in thousands) Interest Rate Locks with Customers Positive fair values $ 179,038 $ 1,722 $ 101,700 $ 1,148 Negative fair values 5,647 (33 ) 1,646 (12 ) Forward Commitments Positive fair values 39,874 95 1,540 3 Negative fair values 96,000 (254 ) 83,562 (1,066 ) Interest Rate Swaps with Customers Positive fair values 2,947,777 193,405 1,185,144 33,258 Negative fair values 75,840 (186 ) 1,386,046 (30,769 ) Interest Rate Swaps with Dealer Counterparties Positive fair values 75,840 186 1,386,046 28,143 Negative fair values 2,947,777 (104,544 ) 1,185,144 (16,338 ) Foreign Exchange Contracts with Customers Positive fair values 10,069 327 5,881 105 Negative fair values 1,691 (165 ) 9,690 (251 ) Foreign Exchange Contracts with Correspondent Banks Positive fair values 4,329 208 9,220 287 Negative fair values 11,953 (315 ) 6,831 (130 )
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: Consolidated Statements of Income Category of Gain/ (Loss) Recognized in Income Three months ended September 30 Nine months ended September 30 2019 2018 2019 2018 (in thousands) Mortgage Banking Derivatives Mortgage banking income $ 843 $ 441 $ 1,457 $ 486 Interest rate swaps Other expense 51 18 198 17 Foreign exchange contracts Other income 10 (59 ) 44 (37 ) Net fair value gains on derivative financial instruments $ 904 $ 400 $ 1,699 $ 466
Summary of Corporation's Mortgage Loans Held for Sale	The following table presents a summary of mortgage loans held for sale and the impact of the fair value election on the Consolidated Financial Statements as of the periods shown: September 30, December 31, (in thousands) Amortized cost $ 33,427 $ 26,407 Fair value 33,945 27,099
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, 2019 Interest rate swap derivative assets $ 193,701 $ (207 ) $ — $ 193,494 Foreign exchange derivative assets with correspondent banks 196 (196 ) — — Total $ 193,897 $ (403 ) $ — $ 193,494 Interest rate swap derivative liabilities $ 104,730 $ (207 ) $ (104,523 ) $ — Foreign exchange derivative liabilities with correspondent banks 314 (196 ) — 118 Total $ 105,044 $ (403 ) $ (104,523 ) $ 118 December 31, 2018 Interest rate swap derivative assets $ 61,401 $ (12,955 ) $ (23,270 ) $ 25,176 Foreign exchange derivative assets with correspondent banks 287 (130 ) — 157 Total $ 61,688 $ (13,085 ) $ (23,270 ) $ 25,333 Interest rate swap derivative liabilities $ 47,107 $ (22,786 ) $ (22,786 ) $ 1,535 Foreign exchange derivative liabilities with correspondent banks 130 (130 ) — — Total $ 47,237 $ (22,916 ) $ (22,786 ) $ 1,535 (1) For interest rate swap assets, amounts represent any derivative liability fair values that could be offset in the event of counterparty or customer default. For interest rate swap liabilities, amounts represent any derivative asset fair values that could be offset in the event of counterparty or customer default. (2) Amounts represent cash collateral received from the counterparty or posted by the Corporation on interest rate swap transactions and foreign exchange contracts with financial institution counterparties. Interest rate swaps with customers are collateralized by the same collateral securing the underlying loans to those borrowers. Cash and securities collateral amounts are included in the table only to the extent of the net derivative fair values.
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, 2019 Interest rate swap derivative assets $ 193,701 $ (207 ) $ — $ 193,494 Foreign exchange derivative assets with correspondent banks 196 (196 ) — — Total $ 193,897 $ (403 ) $ — $ 193,494 Interest rate swap derivative liabilities $ 104,730 $ (207 ) $ (104,523 ) $ — Foreign exchange derivative liabilities with correspondent banks 314 (196 ) — 118 Total $ 105,044 $ (403 ) $ (104,523 ) $ 118 December 31, 2018 Interest rate swap derivative assets $ 61,401 $ (12,955 ) $ (23,270 ) $ 25,176 Foreign exchange derivative assets with correspondent banks 287 (130 ) — 157 Total $ 61,688 $ (13,085 ) $ (23,270 ) $ 25,333 Interest rate swap derivative liabilities $ 47,107 $ (22,786 ) $ (22,786 ) $ 1,535 Foreign exchange derivative liabilities with correspondent banks 130 (130 ) — — Total $ 47,237 $ (22,916 ) $ (22,786 ) $ 1,535 (1) For interest rate swap assets, amounts represent any derivative liability fair values that could be offset in the event of counterparty or customer default. For interest rate swap liabilities, amounts represent any derivative asset fair values that could be offset in the event of counterparty or customer default. (2) Amounts represent cash collateral received from the counterparty or posted by the Corporation on interest rate swap transactions and foreign exchange contracts with financial institution counterparties. Interest rate swaps with customers are collateralized by the same collateral securing the underlying loans to those borrowers. Cash and securities collateral amounts are included in the table only to the extent of the net derivative fair values.

Tax Credit Investments (Tables)

Tax Credit Investments (Tables)	9 Months Ended
	Sep. 30, 2019
Income Tax Disclosure [Abstract]
Summary Of Affordable Housing Tax Credit Investments And Other Credit Investments	The following table presents the balances of the Corporation's TCIs and related unfunded commitments: September 30, December 31, 2019 2018 Recorded in other assets on the Consolidated Balance Sheets: (in thousands) Affordable housing tax credit investment, net $ 159,502 $ 170,401 Other tax credit investments, net 64,922 72,584 Total TCIs, net $ 224,424 $ 242,985 Recorded in other liabilities on the Consolidated Balance Sheets: Unfunded affordable housing tax credit commitments $ 19,727 $ 23,196 Other tax credit investment liabilities 54,623 59,823 Total unfunded tax credit investment commitments and liabilities $ 74,350 $ 83,019 The following table presents other information relating to the Corporation's TCIs: Three Months Ended Nine Months Ended September 30 September 30 2019 2018 2019 2018 Components of income taxes: (in thousands) Affordable housing tax credits and other tax benefits $ (7,852 ) $ (8,555 ) $ (23,002 ) $ (23,642 ) Other tax credit investment credits and tax benefits (1,136 ) (1,596 ) (3,407 ) (4,789 ) Amortization of affordable housing investments, net of tax benefit 5,649 5,459 16,638 16,376 Deferred tax expense 238 336 715 1,007 Total reduction in income tax expense $ (3,101 ) $ (4,356 ) $ (9,056 ) $ (11,048 ) Amortization of TCIs: Affordable housing tax credits investment $ 863 $ 839 $ 2,508 $ 2,517 Other tax credit investment amortization 670 798 2,008 2,394 Total amortization of TCIs $ 1,533 $ 1,637 $ 4,516 $ 4,911

Accumulated Other Comprehensi_2

Accumulated Other Comprehensive Income Accumulated Other Comprehensive Income (Tables)	9 Months Ended
	Sep. 30, 2019
Equity [Abstract]
Changes in other comprehensive income	The following table presents changes in other comprehensive income (loss): Before-Tax Amount Tax Effect Net of Tax Amount (in thousands) Three months ended September 30, 2019 Unrealized gain on securities (3) $ 23,150 $ (5,121 ) $ 18,029 Reclassification adjustment for securities gains included in net income (1) (4,492 ) 994 (3,498 ) Amortization of net unrealized losses on AFS securities transferred to held to maturity ("HTM") (2) (3) 4,405 (974 ) 3,430 Amortization of net unrecognized pension and postretirement items (4) 357 (80 ) 277 Total Other Comprehensive Income $ 23,419 $ (5,181 ) $ 18,238 Three months ended September 30, 2018 Unrealized loss on securities $ (15,865 ) $ 3,334 $ (12,531 ) Reclassification adjustment for securities gains included in net income (1) (14 ) 3 (11 ) Amortization of net unrealized losses on AFS securities transferred to HTM (2) 1,000 (209 ) 791 Amortization of net unrecognized pension and postretirement items (4) 466 (97 ) 369 Total Other Comprehensive Loss $ (14,413 ) $ 3,031 $ (11,382 ) Nine months ended September 30, 2019 Unrealized gain on securities (3) $ 81,207 $ (17,963 ) $ 63,244 Reclassification adjustment for securities gains included in net income (1) (4,733 ) 1,047 (3,686 ) Amortization of net unrealized losses on AFS securities transferred to HTM (2) (3) 6,966 (1,541 ) 5,425 Non-credit related unrealized losses on other-than-temporarily impaired debt securities (875 ) 193 (682 ) Amortization of net unrecognized pension and postretirement items (4) 1,083 (240 ) 843 Total Other Comprehensive Income $ 83,648 $ (18,504 ) $ 65,144 Nine months ended September 30, 2018 Unrealized loss on securities $ (59,250 ) $ 12,444 $ (46,806 ) Reclassification adjustment for securities gains included in net income (1) (37 ) 7 (30 ) Amortization of net unrealized losses on AFS securities transferred to HTM (2) 1,000 (209 ) 791 Non-credit related unrealized gains on other-than-temporarily impaired debt securities 294 (62 ) 232 Amortization of net unrecognized pension and postretirement items (4) 1,580 (332 ) 1,248 Total Other Comprehensive Loss $ (56,413 ) $ 11,848 $ (44,565 ) (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 3, "Investment Securities," for additional details. (2) Amounts reclassified out of accumulated other comprehensive income. Before-tax amounts included as a reduction to "Interest Income" on the Consolidated Statements of Income. (3) Before-Tax amount includes a $3.7 million reclassification of unrealized loss related to the early adoption of ASU 2019-04, as disclosed in "Note 1 - Basis of Presentation" from "Amortization of net unrealized losses on AFS securities transferred to HTM" to "Unrealized gain on securities." (4) 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 13, "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 Unrecognized Pension and Postretirement Plan Income (Costs) Total (in thousands) Three months ended September 30, 2019 Balance at June 30, 2019 $ 2,368 $ (2 ) $ (14,523 ) $ (12,157 ) Other comprehensive income before reclassifications 18,029 — — 18,029 Amounts reclassified from accumulated other comprehensive income (loss) (3,498 ) — 277 (3,221 ) Amortization of net unrealized losses on AFS securities transferred to HTM 3,430 — — — 3,430 Balance at September 30, 2019 $ 20,329 $ (2 ) $ (14,246 ) $ 6,081 Three months ended September 30, 2018 Balance at June 30, 2018 $ (56,690 ) $ 690 $ (17,258 ) $ (73,258 ) Other comprehensive loss before reclassifications (12,531 ) — — (12,531 ) Amounts reclassified from accumulated other comprehensive income (loss) (11 ) — 369 358 Amortization of net unrealized losses on AFS securities transferred to HTM 791 — — 791 Balance at September 30, 2018 $ (68,441 ) $ 690 $ (16,889 ) $ (84,640 ) Nine months ended September 30, 2019 Balance at December 31, 2018 $ (44,654 ) $ 680 $ (15,089 ) $ (59,063 ) Other comprehensive income before reclassifications 63,244 (682 ) — 62,562 Amounts reclassified from accumulated other comprehensive income (loss) (3,686 ) — 843 (2,843 ) Amortization of net unrealized losses on AFS securities transferred to HTM 5,425 — — 5,425 Balance at September 30, 2019 $ 20,329 $ (2 ) $ (14,246 ) $ 6,081 Nine months ended September 30, 2018 Balance at December 31, 2017 $ (18,509 ) $ 458 $ (14,923 ) $ (32,974 ) Other comprehensive loss before reclassifications (46,806 ) 232 — (46,574 ) Amounts reclassified from accumulated other comprehensive income (loss) (30 ) — 1,248 1,218 Amortization of net unrealized losses on AFS securities transferred to HTM 791 — — 791 Reclassification of stranded tax effects (3,887 ) — (3,214 ) (7,101 ) Balance at September 30, 2018 $ (68,441 ) $ 690 $ (16,889 ) $ (84,640 )

Fair Value Measurements (Tables

Fair Value Measurements (Tables)	9 Months Ended
	Sep. 30, 2019
Fair Value Disclosures [Abstract]
Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis	The following tables present assets and liabilities measured at fair value on a recurring basis and reported on the Consolidated Balance Sheets: September 30, 2019 Level 1 Level 2 Level 3 Total (in thousands) Loans held for sale $ — $ 33,945 $ — $ 33,945 Available for sale investment securities: State and municipal securities — 547,344 — 547,344 Corporate debt securities — 356,036 2,370 358,406 Collateralized mortgage obligations — 700,599 — 700,599 Residential mortgage-backed securities — 183,785 — 183,785 Commercial mortgage-backed securities — 422,109 — 422,109 Auction rate securities — — 103,298 103,298 Total available for sale investment securities — 2,209,873 105,668 2,315,541 Other assets: Investments held in Rabbi Trust 20,853 — — 20,853 Derivative assets 535 195,263 — 195,798 Total assets $ 21,388 $ 2,439,081 $ 105,668 $ 2,566,137 Other liabilities: Deferred compensation liabilities 20,853 — — 20,853 Derivative liabilities 480 105,016 — 105,496 Total liabilities $ 21,333 $ 105,016 $ — $ 126,349 December 31, 2018 Level 1 Level 2 Level 3 Total (in thousands) Loans held for sale $ — $ 27,099 $ — $ 27,099 Available for sale investment securities: U.S. Government sponsored agency securities — 31,632 — 31,632 State and municipal securities — 279,095 — 279,095 Corporate debt securities — 106,258 3,275 109,533 Collateralized mortgage obligations — 832,080 — 832,080 Residential mortgage-backed securities — 463,344 — 463,344 Commercial mortgage-backed securities — 261,616 — 261,616 Auction rate securities — — 102,994 102,994 Total available for sale investment securities — 1,974,025 106,269 2,080,294 Other assets: Investments held in Rabbi Trust 18,415 — — 18,415 Derivative assets 392 62,552 — 62,944 Total assets $ 18,807 $ 2,063,676 $ 106,269 $ 2,188,752 Other liabilities: Deferred compensation liabilities $ 18,415 $ — $ — $ 18,415 Derivative liabilities 381 48,185 — 48,566 Total liabilities $ 18,796 $ 48,185 $ — $ 66,981
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): Pooled Trust Single-issuer ARCs Three months ended September 30, 2019 (in thousands) Balance at June 30, 2019 $ — $ 2,370 $ 103,365 Unrealized adjustment to fair value (1) — (2 ) (67 ) Discount accretion (2) — 2 — Balance at September 30, 2019 $ — $ 2,370 $ 103,298 Three months ended September 30, 2018 Balance at June 30, 2018 $ 875 $ 3,200 $ 103,122 Realized adjustment to fair value — 71 — Unrealized adjustment to fair value (1) — 153 11 Settlements - calls — (950 ) — Discount accretion (2) — 1 — Balance at September 30, 2018 $ 875 $ 2,475 $ 103,133 Nine months ended September 30, 2019 Balance at December 31, 2018 $ 875 $ 2,400 $ 102,994 Sales (770 ) — — Unrealized adjustment to fair value (1) (105 ) (32 ) 304 Discount accretion (2) — 2 — Balance at September 30, 2019 $ — $ 2,370 $ 103,298 Nine months ended September 30, 2018 Balance at December 31, 2017 $ 707 $ 3,050 $ 98,668 Realized adjustment to fair value — 71 — Unrealized adjustment to fair value (1) 168 297 4,465 Settlements - calls — (950 ) — Discount accretion (2) — 7 — Balance at September 30, 2018 $ 875 $ 2,475 $ 103,133 (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 at estimated fair value" 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 Level 3 financial assets measured at fair value on a nonrecurring basis: September 30, 2019 December 31, 2018 (in thousands) Net loans and leases $ 146,682 $ 149,846 OREO 7,706 10,518 MSRs (1) 43,968 50,200 Total assets $ 198,356 $ 210,564
Details of Book Value and Fair Value of Financial Instruments	he following table presents the carrying amounts and estimated fair values of the Corporation’s financial instruments as of September 30, 2019 and December 31, 2018 . A general description of the methods and assumptions used to estimate such fair values follows: September 30, 2019 Estimated Fair Value Carrying Amount Level 1 Level 2 Level 3 Total (in thousands) FINANCIAL ASSETS Cash and cash equivalents $ 598,613 $ 598,613 $ — $ — $ 598,613 FRB and FHLB stock 94,557 — 94,557 — 94,557 Loans held for sale 33,945 — 33,945 — 33,945 Available for sale investment securities 2,315,541 — 2,209,873 105,668 2,315,541 Held to maturity investment securities 390,069 — 403,957 — 403,957 Net loans and leases 16,520,731 — — 16,427,675 16,427,675 Accrued interest receivable 60,447 60,447 — — 60,447 Other assets 478,924 236,599 195,263 51,674 483,536 FINANCIAL LIABILITIES Demand and savings deposits $ 14,105,974 $ 14,105,974 $ — $ — $ 14,105,974 Brokered deposits 256,870 216,870 40,550 — 257,420 Time deposits 2,979,873 — 3,002,796 — 3,002,796 Short-term borrowings 832,860 832,860 — — 832,860 Accrued interest payable 9,622 9,622 — — 9,622 FHLB advances and long-term debt 726,714 — 723,194 — 723,194 Other liabilities 288,477 176,799 105,016 6,662 288,477 December 31, 2018 Estimated Fair Value Carrying Amount Level 1 Level 2 Level 3 Total (in thousands) FINANCIAL ASSETS Cash and cash equivalents $ 445,687 $ 445,687 $ — $ — $ 445,687 FRB and FHLB stock 79,283 — 79,283 — 79,283 Loans held for sale 27,099 — 27,099 — 27,099 Available for sale investment securities 2,080,294 — 1,974,025 106,269 2,080,294 Held to maturity investment securities 606,679 — 611,419 — 611,419 Net loans and leases 16,005,263 — — 15,446,895 15,446,895 Accrued interest receivable 58,879 58,879 — — 58,879 Other assets 235,782 124,138 62,552 49,092 235,782 FINANCIAL LIABILITIES Demand and savings deposits $ 13,478,016 $ 13,478,016 $ — $ — $ 13,478,016 Brokered deposits 176,239 176,239 — — 176,239 Time deposits 2,721,904 — 2,712,296 — 2,712,296 Short-term borrowings 754,777 754,777 — — 754,777 Accrued interest payable 10,529 10,529 — — 10,529 FHLB advances and long-term debt 992,279 — 970,985 — 970,985 Other liabilities 218,061 161,003 48,185 8,873 218,061

Net Income Per Share (Tables)

Net Income Per Share (Tables)	9 Months Ended
	Sep. 30, 2019
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 (in thousands, except per share data): Three months ended September 30 Nine months ended September 30 2019 2018 2019 2018 Weighted average shares outstanding (basic) 165,324 175,942 167,834 175,672 Impact of common stock equivalents 802 1,186 888 1,176 Weighted average shares outstanding (diluted) 166,126 177,128 168,722 176,848 Per share: Basic $ 0.38 $ 0.37 $ 1.06 $ 0.86 Diluted 0.37 0.37 1.06 0.85

Stock-Based Compensation (Table

Stock-Based Compensation (Tables)	9 Months Ended
	Sep. 30, 2019
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 2019 2018 2019 2018 (in thousands) Compensation expense $ 2,110 $ 1,823 $ 5,458 $ 6,007 Tax benefit (451 ) (492 ) (1,194 ) (2,028 ) Stock-based compensation expense, net of tax benefit $ 1,659 $ 1,331 $ 4,264 $ 3,979

Employee Benefit Plans (Tables)

Employee Benefit Plans (Tables)	9 Months Ended
	Sep. 30, 2019
Retirement Benefits [Abstract]
Schedule of Defined Benefit Plans Disclosures	The net periodic pension 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 2019 2018 2019 2018 (in thousands) Interest cost $ 813 $ 763 $ 2,443 $ 2,290 Expected return on plan assets (688 ) (512 ) (2,066 ) (1,536 ) Net amortization and deferral 496 607 1,486 1,822 Net periodic pension cost $ 621 $ 858 $ 1,863 $ 2,576 The components of the net benefit for the Corporation’s Postretirement Benefits Plan ("Postretirement Plan") consisted of the following components: Three months ended September 30 Nine months ended September 30 2019 2018 2019 2018 (in thousands) Interest cost $ 15 $ 13 $ 45 $ 42 Net accretion and deferral (139 ) (139 ) (417 ) (419 ) Net periodic benefit $ (124 ) $ (126 ) $ (372 ) $ (377 )

Commitments and Contingencies (

Commitments and Contingencies (Tables)	9 Months Ended
	Sep. 30, 2019
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, 2018 (in thousands) Commitments to extend credit $ 6,872,248 $ 6,306,583 Standby letters of credit 308,533 309,352 Commercial letters of credit 48,047 48,682

Basis of Presentation Narrative

Basis of Presentation Narrative (Details) $ in Thousands	Sep. 30, 2019USD ($)
Organization, Consolidation and Presentation of Financial Statements [Abstract]
ROU assets	$ 104,746
Lease liabilities	$ 111,617

Restrictions on Cash and Cash_2

Restrictions on Cash and Cash Equivalents (Details) - USD ($) $ in Millions	Sep. 30, 2019	Dec. 31, 2018
Restricted Cash and Cash Equivalents Items [Line Items]
Collateral	$ 243.3	$ 45.1
Subsidiaries
Restricted Cash and Cash Equivalents Items [Line Items]
Restricted cash reserves due from subsidiary	$ 134	$ 156.8

Investment Securities Schedule

Investment Securities Schedule of Amortized Cost and Fair Values of Investment Securities (Details) - USD ($) $ in Thousands	Sep. 30, 2019	Jul. 01, 2019	Dec. 31, 2018
Schedule of Investments [Line Items]
Amortized Cost	$ 2,274,913
Gross Unrealized Gains	48,457
Gross Unrealized Losses	(7,829)
Estimated Fair Value	2,315,541		$ 2,080,294
Amortized Cost, Held to Maturity	390,069		606,679
Gross Unrealized Gains, Held to Maturity	13,888		4,833
Gross Unrealized Losses, Held to Maturity	0		(93)
Held to maturity investment securities	403,957		611,419
U.S. Government-Sponsored Agency Securities [Member]
Schedule of Investments [Line Items]
Amortized Cost			31,586
Gross Unrealized Gains			185
Gross Unrealized Losses			(139)
Estimated Fair Value			31,632
US States and Political Subdivisions Debt Securities [Member]
Schedule of Investments [Line Items]
Amortized Cost	530,448
Gross Unrealized Gains	17,000
Gross Unrealized Losses	(104)
Estimated Fair Value	547,344
Amortized Cost, Held to Maturity			156,134
Gross Unrealized Gains, Held to Maturity			1,166
Gross Unrealized Losses, Held to Maturity			(93)
Held to maturity investment securities			157,207
Amortized Cost			282,383
Gross Unrealized Gains			2,178
Gross Unrealized Losses			(5,466)
Estimated Fair Value			279,095
Corporate Debt Securities [Member]
Schedule of Investments [Line Items]
Amortized Cost	353,771
Gross Unrealized Gains	7,030
Gross Unrealized Losses	(2,395)
Estimated Fair Value	358,406
Amortized Cost			111,454
Gross Unrealized Gains			1,432
Gross Unrealized Losses			(3,353)
Estimated Fair Value			109,533
Collateralized Mortgage Obligations [Member]
Schedule of Investments [Line Items]
Amortized Cost	686,577
Gross Unrealized Gains	14,120
Gross Unrealized Losses	(98)
Estimated Fair Value	700,599
Amortized Cost			841,294
Gross Unrealized Gains			2,758
Gross Unrealized Losses			(11,972)
Estimated Fair Value			832,080
Mortgage-Backed Securities [Member]
Schedule of Investments [Line Items]
Amortized Cost	183,696
Gross Unrealized Gains	1,162
Gross Unrealized Losses	(1,073)
Estimated Fair Value	183,785
Amortized Cost, Held to Maturity	390,069		450,545
Gross Unrealized Gains, Held to Maturity	13,888		3,667
Gross Unrealized Losses, Held to Maturity	0		0
Held to maturity investment securities	403,957		454,212
Amortized Cost			476,973
Gross Unrealized Gains			1,583
Gross Unrealized Losses			(15,212)
Estimated Fair Value			463,344
Commercial Mortgage Backed Securities [Member]
Schedule of Investments [Line Items]
Amortized Cost	413,011
Gross Unrealized Gains	9,145
Gross Unrealized Losses	(47)
Estimated Fair Value	422,109
Amortized Cost			264,165
Gross Unrealized Gains			524
Gross Unrealized Losses			(3,073)
Estimated Fair Value			261,616
Auction Rate Securities [Member]
Schedule of Investments [Line Items]
Amortized Cost	107,410
Gross Unrealized Gains	0
Gross Unrealized Losses	(4,112)
Estimated Fair Value	$ 103,298
Amortized Cost			107,410
Gross Unrealized Gains			0
Gross Unrealized Losses			(4,416)
Estimated Fair Value			102,994
Debt Securities [Member]
Schedule of Investments [Line Items]
Amortized Cost			2,115,265
Gross Unrealized Gains			8,660
Gross Unrealized Losses			(43,631)
Estimated Fair Value			$ 2,080,294
Accounting Standards Update 2019-04 [Member] | US States and Political Subdivisions Debt Securities [Member]
Schedule of Investments [Line Items]
Amortized Cost, Held to Maturity		$ (158,900)
Held to maturity investment securities		(168,500)
Amortized Cost		158,900
Estimated Fair Value		$ 168,500

Investment Securities Schedul_2

Investment Securities Schedule of Amortized Cost and Fair Values of Debt Securities by Contractual Maturities (Details) - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Amortized Cost
Due in one year or less	$ 3,722
Due from one year to five years	38,518
Due from five years to ten years	332,514
Due after ten years	616,875
Amortized cost, before securities without debt maturities	991,629
Amortized Cost	2,274,913
Estimated Fair Value
Due in one year or less	3,722
Due from one year to five years	39,747
Due from five years to ten years	337,519
Due after ten years	628,060
Available for sale securities, debt maturities, before securities without single maturities	1,009,048
Estimated Fair Value	2,315,541	$ 2,080,294
Amortized Cost
Due in one year or less	0
Due from one year to five years	0
Due from five years to ten years	0
Due after ten years	0
Debt securities, held-to-maturity, maturity, allocated and single maturity date, amortized cost, total	0
Amortized Cost, Held to Maturity	390,069	606,679
Estimated Fair Value
Due in one year or less	0
Due from one year to five years	0
Due from five years to ten years	0
Due after ten years	0
Debt securities, held-to-maturity, maturity, Allocated and single maturity date, fair value	0
Estimated Fair Value, Held to Maturity	403,957	611,419
Collateralized Mortgage Obligations [Member]
Amortized Cost
Available-for-sale securities, amortized cost without single maturity date	686,577
Amortized Cost	686,577
Estimated Fair Value
Available-for-sale securities, debt maturities, without single maturity date, fair value	700,599
Estimated Fair Value	700,599
Amortized Cost
Debt securities, held-to-maturity, maturity, without single maturity date, amortized cost	0
Estimated Fair Value
Debt securities, held-to-maturity, maturity, without single maturity date, fair value	0
Commercial Mortgage Backed Securities [Member]
Amortized Cost
Available-for-sale securities, amortized cost without single maturity date	413,011
Amortized Cost	413,011
Estimated Fair Value
Available-for-sale securities, debt maturities, without single maturity date, fair value	422,109
Estimated Fair Value	422,109
Amortized Cost
Debt securities, held-to-maturity, maturity, without single maturity date, amortized cost	0
Estimated Fair Value
Debt securities, held-to-maturity, maturity, without single maturity date, fair value	0
Mortgage-Backed Securities [Member]
Amortized Cost
Available-for-sale securities, amortized cost without single maturity date	183,696
Amortized Cost	183,696
Estimated Fair Value
Available-for-sale securities, debt maturities, without single maturity date, fair value	183,785
Estimated Fair Value	183,785
Amortized Cost
Debt securities, held-to-maturity, maturity, without single maturity date, amortized cost	390,069
Amortized Cost, Held to Maturity	390,069	450,545
Estimated Fair Value
Debt securities, held-to-maturity, maturity, without single maturity date, fair value	403,957
Estimated Fair Value, Held to Maturity	$ 403,957	$ 454,212

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, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Gain (Loss) on Securities [Line Items]
Debt securities, Gross Realized Gains	$ 7,938		$ 11,207
Debt securities, Gross Realized Losses	3,446		6,474
Debt securities, Net Gains (Losses)	4,492		4,733
Debt and Equity securities, Gross Realized Gains	7,938		11,207
Debt and Equity securities, Gross Realized Losses	3,446		6,474
Debt and Equity securities, Net Gains (Losses)	$ 4,492		$ 4,733
Gross Realized Gains		$ 116		$ 1,665
Gross Realized Losses		(102)		(1,628)
Net Gains		14		37
Equity Securities [Member]
Gain (Loss) on Securities [Line Items]
Gross Realized Gains				9
Gross Realized Losses				0
Net Gains				9
Debt Securities [Member]
Gain (Loss) on Securities [Line Items]
Gross Realized Gains		116		1,656
Gross Realized Losses		(102)		(1,628)
Net Gains		$ 14		$ 28

Investment Securities Cumulativ

Investment Securities Cumulative Credit Related Other-Than-Temporary Impairment Charges (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Other than Temporary Impairment, Credit Losses Recognized in Earnings [Roll Forward]
Balance of cumulative credit losses on debt securities, beginning of period	$ (990)	$ (11,510)	$ (11,510)	$ (11,510)
Reductions for securities sold during the period	0	0	10,520	0
Balance of cumulative credit losses on debt securities, end of period	$ (990)	$ (11,510)	$ (990)	$ (11,510)

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)	Sep. 30, 2019USD ($)Security	Dec. 31, 2018USD ($)Security
Schedule of Investments [Line Items]
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months	$ 116,363,000
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	$ (495,000)
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Number of Positions | Security	223
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer	$ 270,529,000
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer	(7,334,000)
Debt Securities, Available-for-sale, Unrealized Loss Position	386,892,000
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss	$ (7,829,000)
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Number of Positions | Security	22
Debt Securities, Held-to-maturity, Continuous Unrealized Loss Position, Less than 12 Months, Fair Value		$ 20,601,000
Debt Securities, Held-to-maturity, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss		(93,000)
Debt Securities, Held-to-maturity, Continuous Unrealized Loss Position, 12 Months or Longer, Fair Value		0
Debt Securities, Held-to-maturity, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss		0
Debt Securities, Held-to-maturity, Unrealized Loss Position, Fair Value		20,601,000
Debt Securities, Held-to-maturity, Unrealized Loss Position, Accumulated Loss		$ (93,000)
Debt Securities, Held-to-maturity, Continuous Unrealized Loss Position, Less than 12 Months, Number of Positions | Security		6
Debt Securities, Held-to-maturity, Continuous Unrealized Loss Position, 12 Months or Longer, Number of Positions | Security		0
U.S. Government-Sponsored Agency Securities [Member]
Schedule of Investments [Line Items]
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Number of Positions | Security		1
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Number of Positions		1
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value		$ 4,961,000
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss		(31,000)
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value		5,770,000
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss		(108,000)
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value		10,731,000
Available-for-sale Securities, Continuous Unrealized Loss Position, Accumulated Loss		$ (139,000)
State and Municipal Securities [Member]
Schedule of Investments [Line Items]
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months	$ 17,058,000
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	$ (104,000)
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Number of Positions | Security	0	38
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer	$ 0
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer	0
Debt Securities, Available-for-sale, Unrealized Loss Position	17,058,000
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss	$ (104,000)
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Number of Positions	5	33
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value		$ 72,950,000
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss		(1,292,000)
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value		83,770,000
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss		(4,174,000)
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value		156,720,000
Available-for-sale Securities, Continuous Unrealized Loss Position, Accumulated Loss		(5,466,000)
Debt Securities, Held-to-maturity, Continuous Unrealized Loss Position, Less than 12 Months, Fair Value		20,601,000
Debt Securities, Held-to-maturity, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss		(93,000)
Debt Securities, Held-to-maturity, Continuous Unrealized Loss Position, 12 Months or Longer, Fair Value		0
Debt Securities, Held-to-maturity, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss		0
Debt Securities, Held-to-maturity, Unrealized Loss Position, Fair Value		20,601,000
Debt Securities, Held-to-maturity, Unrealized Loss Position, Accumulated Loss		$ (93,000)
Debt Securities, Held-to-maturity, Continuous Unrealized Loss Position, Less than 12 Months, Number of Positions | Security		6
Debt Securities, Held-to-maturity, Continuous Unrealized Loss Position, 12 Months or Longer, Number of Positions | Security		0
Corporate Debt Securities [Member]
Schedule of Investments [Line Items]
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months	$ 72,569,000
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	$ (313,000)
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Number of Positions | Security	13	14
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer	$ 25,729,000
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer	(2,082,000)
Debt Securities, Available-for-sale, Unrealized Loss Position	98,298,000
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss	$ (2,395,000)
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Number of Positions	9	8
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value		$ 24,419,000
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss		(227,000)
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value		25,642,000
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss		(3,126,000)
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value		50,061,000
Available-for-sale Securities, Continuous Unrealized Loss Position, Accumulated Loss		$ (3,353,000)
Collateralized Mortgage Obligations [Member]
Schedule of Investments [Line Items]
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months	$ 5,734,000
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	$ (2,000)
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Number of Positions | Security	5	89
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer	$ 5,886,000
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer	(96,000)
Debt Securities, Available-for-sale, Unrealized Loss Position	11,620,000
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss	$ (98,000)
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Number of Positions	4	39
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value		$ 136,563,000
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss		(1,050,000)
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value		388,173,000
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss		(10,922,000)
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value		524,736,000
Available-for-sale Securities, Continuous Unrealized Loss Position, Accumulated Loss		$ (11,972,000)
Residential Mortgage Backed Securities [Member]
Schedule of Investments [Line Items]
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months	$ 9,159,000
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	$ (29,000)
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Number of Positions | Security	28	110
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer	$ 135,616,000
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer	(1,044,000)
Debt Securities, Available-for-sale, Unrealized Loss Position	144,775,000
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss	$ (1,073,000)
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Number of Positions	3	17
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value		$ 18,220,000
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss		(222,000)
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value		402,779,000
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss		(14,990,000)
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value		420,999,000
Available-for-sale Securities, Continuous Unrealized Loss Position, Accumulated Loss		$ (15,212,000)
Commercial Mortgage Backed Securities [Member]
Schedule of Investments [Line Items]
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months	$ 11,843,000
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	$ (47,000)
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Number of Positions | Security	0	25
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer	$ 0
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer	0
Debt Securities, Available-for-sale, Unrealized Loss Position	11,843,000
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss	$ (47,000)
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Number of Positions	1	1
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value		$ 9,778,000
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss		(35,000)
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value		197,326,000
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss		(3,038,000)
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value		207,104,000
Available-for-sale Securities, Continuous Unrealized Loss Position, Accumulated Loss		$ (3,073,000)
Auction Rate Securities [Member]
Schedule of Investments [Line Items]
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months	$ 0
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	$ 0
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Number of Positions | Security	177	177
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer	$ 103,298,000
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer	(4,112,000)
Debt Securities, Available-for-sale, Unrealized Loss Position	103,298,000
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss	$ (4,112,000)
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Number of Positions	0	0
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value		$ 0
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss		0
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value		102,994,000
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss		(4,416,000)
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value		102,994,000
Available-for-sale Securities, Continuous Unrealized Loss Position, Accumulated Loss		$ (4,416,000)
Debt Securities [Member]
Schedule of Investments [Line Items]
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Number of Positions | Security		454
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Number of Positions		99
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value		$ 266,891,000
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss		(2,857,000)
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value		1,206,454,000
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss		(40,774,000)
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value		1,473,345,000
Available-for-sale Securities, Continuous Unrealized Loss Position, Accumulated Loss		$ (43,631,000)

Investment Securities Summary_2

Investment Securities Summary of Amortized Cost and Fair Values of Corporate Debt Securities (Details) - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	$ 2,274,913
Estimated Fair Value	2,315,541	$ 2,080,294
Corporate Debt Securities [Member]
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	353,771
Estimated Fair Value	$ 358,406

Investment Securities Narrative

Investment Securities Narrative (Details)	9 Months Ended
	Sep. 30, 2018USD ($)	Sep. 30, 2019USD ($)Security	Jun. 30, 2019USD ($)	Dec. 31, 2018USD ($)	Jun. 30, 2018USD ($)	Dec. 31, 2017USD ($)
Schedule of Investments [Line Items]
Other than Temporary Impairment, Credit Losses Recognized in Earnings, Credit Losses on Debt Securities Held	$ 11,510,000	$ 990,000	$ 990,000	$ 11,510,000	$ 11,510,000	$ 11,510,000
Other-than-temporary Impairment Loss, Debt Securities, Portion Recognized in Earnings	$ 0
Number of Held to Maturity investments in unrealized loss position | Security		0
Amortized cost		$ 2,274,913,000
Available-for-sale Securities, Fair Value Disclosure		2,315,541,000		2,080,294,000
Residential Mortgage Backed Securities [Member]
Schedule of Investments [Line Items]
Amortized cost		183,696,000
Available-for-sale Securities, Fair Value Disclosure		183,785,000
US States and Political Subdivisions Debt Securities [Member]
Schedule of Investments [Line Items]
Amortized cost		530,448,000
Available-for-sale Securities, Fair Value Disclosure		547,344,000
Collateral Pledged [Member]
Schedule of Investments [Line Items]
Securities pledged as collateral		$ 391,500,000		$ 973,400,000

Loans and Allowance for Credi_3

Loans and Allowance for Credit Losses Summary Of Gross Loans (Details) - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018	Sep. 30, 2018
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases, gross of unearned income	$ 16,713,704	$ 16,192,439
Unearned income	(26,838)	(26,639)
Loans and leases, net of unearned income	16,686,866	16,165,800	$ 15,925,093
Real-estate - commercial mortgage
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases, gross of unearned income	6,604,634	6,434,285
Loans and leases, net of unearned income	6,604,634	6,434,285	6,337,984
Commercial - industrial, financial and agricultural
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases, gross of unearned income	4,494,496	4,404,548
Loans and leases, net of unearned income	4,494,496	4,404,548	4,288,823
Real estate - residential mortgage
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases, gross of unearned income	2,570,793	2,251,044
Loans and leases, net of unearned income	2,570,793	2,251,044	2,173,548
Real-estate - home equity
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases, gross of unearned income	1,346,115	1,452,137
Loans and leases, net of unearned income	1,346,115	1,452,137	1,469,152
Real estate - construction
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases, gross of unearned income	913,644	916,599
Loans and leases, net of unearned income	913,644	916,599	979,857
Consumer
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases, gross of unearned income	464,213	419,186
Loans and leases, net of unearned income	464,213	419,186	$ 390,708
Equipment lease financing and other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases, gross of unearned income	316,880	311,866
Overdrafts
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases, gross of unearned income	$ 2,929	$ 2,774

Loans and Allowance for Credi_4

Loans and Allowance for Credit Losses Allowance for Credit Losses (Details) - USD ($) $ in Thousands	Sep. 30, 2019	Jun. 30, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Dec. 31, 2017
Receivables [Abstract]
Allowance for loan and lease losses	$ 166,135	$ 170,233	$ 160,537	$ 157,810	$ 156,050	$ 169,910
Reserve for unfunded lending commitments	6,662		8,873
Allowance for credit losses	$ 172,797	$ 176,941	$ 169,410	$ 167,826	$ 169,247	$ 176,084

Loans and Allowance for Credi_5

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, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Allowance for Loan and Lease Losses [Roll Forward]
Balance at beginning of period	$ 176,941	$ 169,247	$ 169,410	$ 176,084
Loans and leases charged off	(10,128)	(6,883)	(20,208)	(55,440)
Recoveries of loans and leases previously charged off	3,814	3,842	11,300	8,475
Net loans and leases charged off	(6,314)	(3,041)	(8,908)	(46,965)
Provision for credit losses	2,170	1,620	12,295	38,707
Balance at end of period	$ 172,797	$ 167,826	$ 172,797	$ 167,826

Loans and Allowance for Credi_6

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, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Accounts, Notes, Loans and Financing Receivable [Line Items]
Beginning Balance	$ 170,233	$ 156,050	$ 160,537	$ 169,910
Loans and leases charged off	(10,128)	(6,883)	(20,208)	(55,440)
Recoveries of loans and leases previously charged off	3,814	3,842	11,300	8,475
Net loans and leases charged off	(6,314)	(3,041)	(8,908)	(46,965)
Provision for loan losses	2,216	4,801	14,506	34,865
Ending Balance	166,135	157,810	166,135	157,810
Provision for loan losses gross	46,000,000	3,200	(2,200)	3,800
Provision for credit losses	2,170	1,620	12,295	38,707
Real-estate - commercial mortgage
Accounts, Notes, Loans and Financing Receivable [Line Items]
Beginning Balance	54,859	56,583	52,889	58,793
Loans and leases charged off	(394)	(650)	(1,769)	(1,283)
Recoveries of loans and leases previously charged off	444	928	749	1,528
Net loans and leases charged off	50	278	(1,020)	245
Provision for loan losses	(5,529)	(2,750)	(2,489)	(4,927)
Ending Balance	49,380	54,111	49,380	54,111
Commercial - industrial, financial and agricultural
Accounts, Notes, Loans and Financing Receivable [Line Items]
Beginning Balance	66,341	59,045	58,868	66,280
Loans and leases charged off	(7,181)	(3,541)	(11,863)	(46,178)
Recoveries of loans and leases previously charged off	2,311	731	6,234	2,347
Net loans and leases charged off	(4,870)	(2,810)	(5,629)	(43,831)
Provision for loan losses	7,710	(301)	15,942	33,485
Ending Balance	69,181	55,934	69,181	55,934
Real-estate - home equity
Accounts, Notes, Loans and Financing Receivable [Line Items]
Beginning Balance	18,981	16,247	18,911	18,127
Loans and leases charged off	(498)	(743)	(923)	(1,967)
Recoveries of loans and leases previously charged off	132	217	552	694
Net loans and leases charged off	(366)	(526)	(371)	(1,273)
Provision for loan losses	(662)	2,890	(587)	1,757
Ending Balance	17,953	18,611	17,953	18,611
Real estate - residential mortgage
Accounts, Notes, Loans and Financing Receivable [Line Items]
Beginning Balance	18,892	14,504	18,921	16,088
Loans and leases charged off	(533)	(483)	(1,322)	(1,128)
Recoveries of loans and leases previously charged off	440	317	783	520
Net loans and leases charged off	(93)	(166)	(539)	(608)
Provision for loan losses	(109)	3,774	308	2,632
Ending Balance	18,690	18,112	18,690	18,112
Real estate - construction
Accounts, Notes, Loans and Financing Receivable [Line Items]
Beginning Balance	4,928	5,988	5,061	6,620
Loans and leases charged off	(45)	(212)	(143)	(976)
Recoveries of loans and leases previously charged off	164	664	1,493	1,414
Net loans and leases charged off	119	452	1,350	438
Provision for loan losses	(664)	(961)	(2,028)	(1,579)
Ending Balance	4,383	5,479	4,383	5,479
Consumer
Accounts, Notes, Loans and Financing Receivable [Line Items]
Beginning Balance	3,363	1,699	3,217	2,045
Loans and leases charged off	(877)	(672)	(2,355)	(2,276)
Recoveries of loans and leases previously charged off	216	390	1,005	1,015
Net loans and leases charged off	(661)	(282)	(1,350)	(1,261)
Provision for loan losses	798	1,429	1,633	2,062
Ending Balance	3,500	2,846	3,500	2,846
Equipment lease financing, other and overdrafts
Accounts, Notes, Loans and Financing Receivable [Line Items]
Beginning Balance	2,869	1,984	2,670	1,957
Loans and leases charged off	(600)	(582)	(1,833)	(1,632)
Recoveries of loans and leases previously charged off	107	595	484	957
Net loans and leases charged off	(493)	13	(1,349)	(675)
Provision for loan losses	672	720	1,727	1,435
Ending Balance	$ 3,048	$ 2,717	$ 3,048	$ 2,717

Loans and Allowance for Credi_7

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, 2019	Jun. 30, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Dec. 31, 2017
Accounts, Notes, Loans and Financing Receivable [Line Items]
Collectively evaluated for impairment	$ 129,608			$ 120,341
Individually evaluated for impairment	36,527			37,469
Allowance for loan losses	166,135	$ 170,233	$ 160,537	157,810	$ 156,050	$ 169,910
Collectively evaluated for impairment	16,503,657			15,751,600
Individually evaluated for impairment	183,209			173,493
Loans and leases, net of unearned income	16,686,866		16,165,800	15,925,093
Real-estate - commercial mortgage
Accounts, Notes, Loans and Financing Receivable [Line Items]
Collectively evaluated for impairment	42,766			46,812
Individually evaluated for impairment	6,614			7,299
Allowance for loan losses	49,380	54,859	52,889	54,111	56,583	58,793
Collectively evaluated for impairment	6,543,781			6,290,143
Individually evaluated for impairment	60,853			47,841
Loans and leases, net of unearned income	6,604,634		6,434,285	6,337,984
Commercial - industrial, financial and agricultural
Accounts, Notes, Loans and Financing Receivable [Line Items]
Collectively evaluated for impairment	58,722			47,028
Individually evaluated for impairment	10,459			8,906
Allowance for loan losses	69,181	66,341	58,868	55,934	59,045	66,280
Collectively evaluated for impairment	4,453,062			4,235,953
Individually evaluated for impairment	41,434			52,870
Loans and leases, net of unearned income	4,494,496		4,404,548	4,288,823
Real-estate - home equity
Accounts, Notes, Loans and Financing Receivable [Line Items]
Collectively evaluated for impairment	8,033			7,856
Individually evaluated for impairment	9,920			10,755
Allowance for loan losses	17,953	18,981	18,911	18,611	16,247	18,127
Collectively evaluated for impairment	1,323,950			1,444,898
Individually evaluated for impairment	22,165			24,254
Loans and leases, net of unearned income	1,346,115		1,452,137	1,469,152
Real estate - residential mortgage
Accounts, Notes, Loans and Financing Receivable [Line Items]
Collectively evaluated for impairment	9,678			8,369
Individually evaluated for impairment	9,012			9,743
Allowance for loan losses	18,690	18,892	18,921	18,112	14,504	16,088
Collectively evaluated for impairment	2,533,295			2,133,718
Individually evaluated for impairment	37,498			39,830
Loans and leases, net of unearned income	2,570,793		2,251,044	2,173,548
Real estate - construction
Accounts, Notes, Loans and Financing Receivable [Line Items]
Collectively evaluated for impairment	3,970			4,718
Individually evaluated for impairment	413			761
Allowance for loan losses	4,383	4,928	5,061	5,479	5,988	6,620
Collectively evaluated for impairment	909,811			971,167
Individually evaluated for impairment	3,833			8,690
Loans and leases, net of unearned income	913,644		916,599	979,857
Consumer
Accounts, Notes, Loans and Financing Receivable [Line Items]
Collectively evaluated for impairment	3,495			2,841
Individually evaluated for impairment	5			5
Allowance for loan losses	3,500	3,363	3,217	2,846	1,699	2,045
Collectively evaluated for impairment	464,206			390,700
Individually evaluated for impairment	7			8
Loans and leases, net of unearned income	464,213		419,186	390,708
Equipment lease financing, other and overdrafts
Accounts, Notes, Loans and Financing Receivable [Line Items]
Collectively evaluated for impairment	2,944			2,717
Individually evaluated for impairment	104			0
Allowance for loan losses	3,048	$ 2,869	2,670	2,717	$ 1,984	$ 1,957
Collectively evaluated for impairment	275,552			285,021
Individually evaluated for impairment	17,419			0
Loans and leases, net of unearned income	$ 292,971		$ 288,001	$ 285,021

Loans and Allowance for Credi_8

Loans and Allowance for Credit Losses Total Impaired Loans by Class Segments (Details) - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Impaired Financing Receivables [Line Items]
Unpaid principal balance, with no related allowance	$ 88,614	$ 89,986
Unpaid principal balance, with related allowance	135,562	139,277
Unpaid Principal Balance	224,176	229,263
Recorded investment, with no related allowance	74,742	77,566
Recorded investment, with related allowance	108,467	112,612
Recorded Investment	183,209	190,178
Related Allowance	36,527	40,332
Real-estate - commercial mortgage
Impaired Financing Receivables [Line Items]
Unpaid principal balance, with no related allowance	31,305	25,095
Unpaid principal balance, with related allowance	38,393	29,005
Recorded investment, with no related allowance	29,156	23,481
Recorded investment, with related allowance	31,697	22,592
Related Allowance	6,614	7,255
Commercial
Impaired Financing Receivables [Line Items]
Unpaid principal balance, with no related allowance	27,060	33,493
Unpaid principal balance, with related allowance	29,146	37,706
Recorded investment, with no related allowance	21,617	26,585
Recorded investment, with related allowance	19,817	28,708
Related Allowance	10,459	12,513
Real estate - residential mortgage
Impaired Financing Receivables [Line Items]
Unpaid principal balance, with no related allowance	4,531	3,149
Unpaid principal balance, with related allowance	37,559	39,972
Recorded investment, with no related allowance	4,368	3,149
Recorded investment, with related allowance	33,130	35,621
Related Allowance	9,012	9,394
Construction
Impaired Financing Receivables [Line Items]
Unpaid principal balance, with no related allowance	6,449	8,980
Unpaid principal balance, with related allowance	4,724	5,984
Recorded investment, with no related allowance	2,598	5,083
Recorded investment, with related allowance	1,235	2,307
Related Allowance	413	793
Real-estate - home equity
Impaired Financing Receivables [Line Items]
Unpaid principal balance, with related allowance	25,317	26,599
Recorded investment, with related allowance	22,165	23,373
Related Allowance	9,920	10,370
Equipment lease financing
Impaired Financing Receivables [Line Items]
Unpaid principal balance, with no related allowance	19,269	19,269
Recorded investment, with no related allowance	17,003	19,268
Consumer
Impaired Financing Receivables [Line Items]
Unpaid principal balance, with related allowance	7	11
Recorded investment, with related allowance	7	11
Related Allowance	5	7
Equipment lease financing, other and overdrafts
Impaired Financing Receivables [Line Items]
Unpaid principal balance, with related allowance	416	0
Recorded investment, with related allowance	416	0
Related Allowance	$ 104	$ 0

Loans and Allowance for Credi_9

Loans and Allowance for Credit Losses Average Impaired Loans by Class Segment (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Financing Receivable, Impaired [Line Items]
Impaired Financing Receivable, with No Related Allowance, Average Recorded Investment	$ 76,834	$ 66,235	$ 77,422	$ 72,080
Impaired Financing Receivable, with No Related Allowance, Interest Income, Accrual Method	150	180	452	553
Impaired Financing Receivable, with Related Allowance, Average Recorded Investment	111,938	110,516	111,779	112,725
Impaired Financing Receivable, with Related Allowance, Interest Income, Accrual Method	536	565	1,662	1,661
Impaired Financing Receivable, Average Recorded Investment	188,772	176,751	189,201	184,805
Impaired Financing Receivable, Interest Income, Accrual Method	686	745	2,114	2,214
Real-estate - commercial mortgage
Financing Receivable, Impaired [Line Items]
Impaired Financing Receivable, with No Related Allowance, Average Recorded Investment	29,865	26,051	27,028	25,702
Impaired Financing Receivable, with No Related Allowance, Interest Income, Accrual Method	94	94	291	274
Impaired Financing Receivable, with Related Allowance, Average Recorded Investment	30,508	23,734	25,837	24,727
Impaired Financing Receivable, with Related Allowance, Interest Income, Accrual Method	96	85	268	260
Commercial
Financing Receivable, Impaired [Line Items]
Impaired Financing Receivable, with No Related Allowance, Average Recorded Investment	22,603	30,157	24,670	35,098
Impaired Financing Receivable, with No Related Allowance, Interest Income, Accrual Method	30	66	92	208
Impaired Financing Receivable, with Related Allowance, Average Recorded Investment	23,906	23,687	26,373	23,934
Impaired Financing Receivable, with Related Allowance, Interest Income, Accrual Method	32	51	101	149
Real-estate - home equity
Financing Receivable, Impaired [Line Items]
Impaired Financing Receivable, with Related Allowance, Average Recorded Investment	22,874	24,628	23,237	24,690
Impaired Financing Receivable, with Related Allowance, Interest Income, Accrual Method	210	202	655	581
Real estate - residential mortgage
Financing Receivable, Impaired [Line Items]
Impaired Financing Receivable, with No Related Allowance, Average Recorded Investment	4,384	3,182	3,761	3,872
Impaired Financing Receivable, with No Related Allowance, Interest Income, Accrual Method	26	20	69	71
Impaired Financing Receivable, with Related Allowance, Average Recorded Investment	33,035	36,396	34,535	36,578
Impaired Financing Receivable, with Related Allowance, Interest Income, Accrual Method	198	227	638	671
Construction
Financing Receivable, Impaired [Line Items]
Impaired Financing Receivable, with No Related Allowance, Average Recorded Investment	2,601	6,845	3,827	7,408
Impaired Financing Receivable, with No Related Allowance, Interest Income, Accrual Method	0	0	0	0
Impaired Financing Receivable, with Related Allowance, Average Recorded Investment	1,399	2,061	1,683	2,778
Impaired Financing Receivable, with Related Allowance, Interest Income, Accrual Method	0	0	0	0
Equipment lease financing
Financing Receivable, Impaired [Line Items]
Impaired Financing Receivable, with No Related Allowance, Average Recorded Investment	17,381	0	18,136	0
Impaired Financing Receivable, with No Related Allowance, Interest Income, Accrual Method	0	0	0	0
Consumer
Financing Receivable, Impaired [Line Items]
Impaired Financing Receivable, with Related Allowance, Average Recorded Investment	8	10	10	18
Impaired Financing Receivable, with Related Allowance, Interest Income, Accrual Method	0	0	0	0
Equipment lease financing, other and overdrafts
Financing Receivable, Impaired [Line Items]
Impaired Financing Receivable, with Related Allowance, Average Recorded Investment	208	0	104	0
Impaired Financing Receivable, with Related Allowance, Interest Income, Accrual Method	$ 0	$ 0	$ 0	$ 0

Loans and Allowance for Cred_10

Loans and Allowance for Credit Losses Credit Quality Indicators (Details) - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Internal risk ratings for loans by segment [Line Items]
Loans and Leases Receivable, Gross	$ 16,713,704	$ 16,192,439
Real-estate - commercial mortgage
Internal risk ratings for loans by segment [Line Items]
Loans and Leases Receivable, Gross	6,604,634	6,434,285
Real-estate - commercial mortgage | Pass
Internal risk ratings for loans by segment [Line Items]
Loans and Leases Receivable, Gross	6,290,567	6,129,463
Real-estate - commercial mortgage | Special Mention
Internal risk ratings for loans by segment [Line Items]
Loans and Leases Receivable, Gross	142,136	170,827
Real-estate - commercial mortgage | 43465
Internal risk ratings for loans by segment [Line Items]
Loans and Leases Receivable, Gross	171,931	133,995
Commercial
Internal risk ratings for loans by segment [Line Items]
Loans and Leases Receivable, Gross	4,310,032	4,224,980
Commercial | Pass
Internal risk ratings for loans by segment [Line Items]
Loans and Leases Receivable, Gross	3,926,856	3,902,484
Commercial | Special Mention
Internal risk ratings for loans by segment [Line Items]
Loans and Leases Receivable, Gross	198,592	193,470
Commercial | 43465
Internal risk ratings for loans by segment [Line Items]
Loans and Leases Receivable, Gross	184,584	129,026
Commercial - unsecured
Internal risk ratings for loans by segment [Line Items]
Loans and Leases Receivable, Gross	184,464	179,568
Commercial - unsecured | Pass
Internal risk ratings for loans by segment [Line Items]
Loans and Leases Receivable, Gross	175,761	171,589
Commercial - unsecured | Special Mention
Internal risk ratings for loans by segment [Line Items]
Loans and Leases Receivable, Gross	5,082	4,016
Commercial - unsecured | 43465
Internal risk ratings for loans by segment [Line Items]
Loans and Leases Receivable, Gross	3,621	3,963
Commercial - industrial, financial and agricultural
Internal risk ratings for loans by segment [Line Items]
Loans and Leases Receivable, Gross	4,494,496	4,404,548
Commercial - industrial, financial and agricultural | Pass
Internal risk ratings for loans by segment [Line Items]
Loans and Leases Receivable, Gross	4,102,617	4,074,073
Commercial - industrial, financial and agricultural | Special Mention
Internal risk ratings for loans by segment [Line Items]
Loans and Leases Receivable, Gross	203,674	197,486
Commercial - industrial, financial and agricultural | 43465
Internal risk ratings for loans by segment [Line Items]
Loans and Leases Receivable, Gross	188,205	132,989
Construction
Internal risk ratings for loans by segment [Line Items]
Loans and Leases Receivable, Gross	118,661	117,872
Construction | Pass
Internal risk ratings for loans by segment [Line Items]
Loans and Leases Receivable, Gross	112,163	104,079
Construction | Special Mention
Internal risk ratings for loans by segment [Line Items]
Loans and Leases Receivable, Gross	2,871	6,912
Construction | 43465
Internal risk ratings for loans by segment [Line Items]
Loans and Leases Receivable, Gross	3,627	6,881
Construction - commercial
Internal risk ratings for loans by segment [Line Items]
Loans and Leases Receivable, Gross	710,713	726,726
Construction - commercial | Pass
Internal risk ratings for loans by segment [Line Items]
Loans and Leases Receivable, Gross	707,290	723,030
Construction - commercial | Special Mention
Internal risk ratings for loans by segment [Line Items]
Loans and Leases Receivable, Gross	719	1,163
Construction - commercial | 43465
Internal risk ratings for loans by segment [Line Items]
Loans and Leases Receivable, Gross	2,704	2,533
Construction - Commercial and Commercial Residential
Internal risk ratings for loans by segment [Line Items]
Loans and Leases Receivable, Gross	829,374	844,598
Construction - Commercial and Commercial Residential | Pass
Internal risk ratings for loans by segment [Line Items]
Loans and Leases Receivable, Gross	819,453	827,109
Construction - Commercial and Commercial Residential | Special Mention
Internal risk ratings for loans by segment [Line Items]
Loans and Leases Receivable, Gross	3,590	8,075
Construction - Commercial and Commercial Residential | 43465
Internal risk ratings for loans by segment [Line Items]
Loans and Leases Receivable, Gross	6,331	9,414
Commercial Loans, Commerical Mortgages, Constructions Loans
Internal risk ratings for loans by segment [Line Items]
Loans and Leases Receivable, Gross	$ 11,928,504	$ 11,683,431
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	$ 11,212,637	$ 11,030,645
Percentage of total loans rated	94.00%	94.40%
Commercial Loans, Commerical Mortgages, Constructions Loans | Special Mention
Internal risk ratings for loans by segment [Line Items]
Loans and Leases Receivable, Gross	$ 349,400	$ 376,388
Percentage of total loans rated	2.90%	3.20%
Commercial Loans, Commerical Mortgages, Constructions Loans | 43465
Internal risk ratings for loans by segment [Line Items]
Loans and Leases Receivable, Gross	$ 366,467	$ 276,398
Percentage of total loans rated	3.10%	2.40%

Loans and Allowance for Cred_11

Loans and Allowance for Credit Losses Summary of Delinquency and Non-Performing Status by Portfolio Segment (Details) $ in Thousands	9 Months Ended
	Sep. 30, 2019USD ($)day	Dec. 31, 2018USD ($)	Sep. 30, 2018USD ($)
Financing Receivable, Impaired [Line Items]
Loans and leases, net of unearned income	$ 16,686,866	$ 16,165,800	$ 15,925,093
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 and leases, net of unearned income	$ 1,346,115	1,452,137	1,469,152
Real-estate - home equity | Performing
Financing Receivable, Impaired [Line Items]
Loans and leases, net of unearned income	1,325,900	1,431,666
Real-estate - home equity | Delinquent
Financing Receivable, Impaired [Line Items]
Loans and leases, net of unearned income	9,445	10,702
Real-estate - home equity | Non-performing
Financing Receivable, Impaired [Line Items]
Loans and leases, net of unearned income	10,770	9,769
Real estate - residential mortgage
Financing Receivable, Impaired [Line Items]
Loans and leases, net of unearned income	2,570,793	2,251,044	2,173,548
Real estate - residential mortgage | Performing
Financing Receivable, Impaired [Line Items]
Loans and leases, net of unearned income	2,526,551	2,202,955
Real estate - residential mortgage | Delinquent
Financing Receivable, Impaired [Line Items]
Loans and leases, net of unearned income	24,092	28,988
Real estate - residential mortgage | Non-performing
Financing Receivable, Impaired [Line Items]
Loans and leases, net of unearned income	20,150	19,101
Construction - other
Financing Receivable, Impaired [Line Items]
Loans and leases, net of unearned income	84,270	72,001
Construction - other | Performing
Financing Receivable, Impaired [Line Items]
Loans and leases, net of unearned income	82,787	71,511
Construction - other | Delinquent
Financing Receivable, Impaired [Line Items]
Loans and leases, net of unearned income	1,296	0
Construction - other | Non-performing
Financing Receivable, Impaired [Line Items]
Loans and leases, net of unearned income	187	490
Consumer
Financing Receivable, Impaired [Line Items]
Loans and leases, net of unearned income	64,801	56,033
Consumer | Performing
Financing Receivable, Impaired [Line Items]
Loans and leases, net of unearned income	64,066	55,629
Consumer | Delinquent
Financing Receivable, Impaired [Line Items]
Loans and leases, net of unearned income	641	338
Consumer | Non-performing
Financing Receivable, Impaired [Line Items]
Loans and leases, net of unearned income	94	66
Consumer - indirect
Financing Receivable, Impaired [Line Items]
Loans and leases, net of unearned income	399,412	363,153
Consumer - indirect | Performing
Financing Receivable, Impaired [Line Items]
Loans and leases, net of unearned income	395,919	359,405
Consumer - indirect | Delinquent
Financing Receivable, Impaired [Line Items]
Loans and leases, net of unearned income	3,345	3,405
Consumer - indirect | Non-performing
Financing Receivable, Impaired [Line Items]
Loans and leases, net of unearned income	148	343
Consumer
Financing Receivable, Impaired [Line Items]
Loans and leases, net of unearned income	464,213	419,186	390,708
Consumer | Performing
Financing Receivable, Impaired [Line Items]
Loans and leases, net of unearned income	459,985	415,034
Consumer | Delinquent
Financing Receivable, Impaired [Line Items]
Loans and leases, net of unearned income	3,986	3,743
Consumer | Non-performing
Financing Receivable, Impaired [Line Items]
Loans and leases, net of unearned income	242	409
Equipment lease financing, other and overdrafts
Financing Receivable, Impaired [Line Items]
Loans and leases, net of unearned income	292,971	288,001	$ 285,021
Equipment lease financing, other and overdrafts | Performing
Financing Receivable, Impaired [Line Items]
Loans and leases, net of unearned income	274,239	267,112
Equipment lease financing, other and overdrafts | Delinquent
Financing Receivable, Impaired [Line Items]
Loans and leases, net of unearned income	1,066	1,302
Equipment lease financing, other and overdrafts | Non-performing
Financing Receivable, Impaired [Line Items]
Loans and leases, net of unearned income	17,666	19,587
Real Estate, Consumer, Leasing And Other Loans [Member] [Member]
Financing Receivable, Impaired [Line Items]
Loans and leases, net of unearned income	4,758,362	4,482,369
Real Estate, Consumer, Leasing And Other Loans [Member] [Member] | Performing
Financing Receivable, Impaired [Line Items]
Loans and leases, net of unearned income	4,669,462	4,388,278
Real Estate, Consumer, Leasing And Other Loans [Member] [Member] | Delinquent
Financing Receivable, Impaired [Line Items]
Loans and leases, net of unearned income	39,885	44,735
Real Estate, Consumer, Leasing And Other Loans [Member] [Member] | Non-performing
Financing Receivable, Impaired [Line Items]
Loans and leases, net of unearned income	$ 49,015	$ 49,356
Commercial Loans, Commerical Mortgages, Constructions Loans
Financing Receivable, Impaired [Line Items]
% of Total	100.00%	100.00%
Commercial Loans, Commerical Mortgages, Constructions Loans | Performing
Financing Receivable, Impaired [Line Items]
% of Total	98.10%	97.90%
Commercial Loans, Commerical Mortgages, Constructions Loans | Delinquent
Financing Receivable, Impaired [Line Items]
% of Total	0.90%	1.00%
Commercial Loans, Commerical Mortgages, Constructions Loans | Non-performing
Financing Receivable, Impaired [Line Items]
% of Total	1.00%	1.10%

Loans and Allowance for Cred_12

Loans and Allowance for Credit Losses Non-Performing Assets (Details) - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Receivables [Abstract]
Non-accrual loans and leases	$ 124,287	$ 128,572
Loans and leases 90 days or more past due and still accruing	11,689	11,106
Total non-performing loans and leases	135,976	139,678
Other real estate owned (OREO)	7,706	10,518
Total non-performing assets	$ 143,682	$ 150,196

Loans and Allowance for Cred_13

Loans and Allowance for Credit Losses Past Due Loan Status and Non-Accrual Loans by Portfolio Segment (Details) - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018	Sep. 30, 2018
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due and Non-accrual	$ 212,342	$ 208,371
≥ 90 Days Past Due and Accruing	11,689	11,106
Non- accrual	124,287	128,572
Current	16,474,524	15,957,429
Loans and leases, net of unearned income	16,686,866	16,165,800	$ 15,925,093
Financing Receivables, 30 to 59 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due and Non-accrual	60,637	53,640
Financing Receivables, 60 to 89 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due and Non-accrual	15,729	15,053
Real-estate - commercial mortgage
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due and Non-accrual	75,102	45,859
≥ 90 Days Past Due and Accruing	1,301	1,765
Non- accrual	44,409	30,388
Current	6,529,532	6,388,426
Loans and leases, net of unearned income	6,604,634	6,434,285	6,337,984
Real-estate - commercial mortgage | Financing Receivables, 30 to 59 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due and Non-accrual	25,100	12,206
Real-estate - commercial mortgage | Financing Receivables, 60 to 89 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due and Non-accrual	4,292	1,500
Commercial
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due and Non-accrual	41,590	56,532
≥ 90 Days Past Due and Accruing	731	1,068
Non- accrual	35,664	49,299
Current	4,268,442	4,168,448
Loans and leases, net of unearned income	4,310,032	4,224,980
Commercial | Financing Receivables, 30 to 59 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due and Non-accrual	3,234	5,227
Commercial | Financing Receivables, 60 to 89 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due and Non-accrual	1,961	938
Commercial - unsecured
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due and Non-accrual	907	2,500
≥ 90 Days Past Due and Accruing	153	51
Non- accrual	578	851
Current	183,557	177,068
Loans and leases, net of unearned income	184,464	179,568
Commercial - unsecured | Financing Receivables, 30 to 59 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due and Non-accrual	91	1,598
Commercial - unsecured | Financing Receivables, 60 to 89 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due and Non-accrual	85	0
Commercial - industrial, financial and agricultural
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due and Non-accrual	42,497	59,032
≥ 90 Days Past Due and Accruing	884	1,119
Non- accrual	36,242	50,150
Current	4,451,999	4,345,516
Loans and leases, net of unearned income	4,494,496	4,404,548	4,288,823
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 and Non-accrual	3,325	6,825
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 and Non-accrual	2,046	938
Real-estate - home equity
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due and Non-accrual	20,215	20,471
≥ 90 Days Past Due and Accruing	4,122	3,061
Non- accrual	6,648	6,708
Current	1,325,900	1,431,666
Loans and leases, net of unearned income	1,346,115	1,452,137	1,469,152
Real-estate - home equity | Financing Receivables, 30 to 59 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due and Non-accrual	7,063	7,144
Real-estate - home equity | Financing Receivables, 60 to 89 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due and Non-accrual	2,382	3,558
Real estate - residential mortgage
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due and Non-accrual	44,242	48,089
≥ 90 Days Past Due and Accruing	4,414	4,433
Non- accrual	15,736	14,668
Current	2,526,551	2,202,955
Loans and leases, net of unearned income	2,570,793	2,251,044	2,173,548
Real estate - residential mortgage | Financing Receivables, 30 to 59 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due and Non-accrual	17,801	20,796
Real estate - residential mortgage | Financing Receivables, 60 to 89 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due and Non-accrual	6,291	8,192
Construction
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due and Non-accrual	5,432	9,370
≥ 90 Days Past Due and Accruing	479	0
Non- accrual	3,627	6,881
Current	113,229	108,502
Loans and leases, net of unearned income	118,661	117,872
Construction | Financing Receivables, 30 to 59 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due and Non-accrual	1,326	2,489
Construction | Financing Receivables, 60 to 89 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due and Non-accrual	0	0
Construction - commercial
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due and Non-accrual	411	19
≥ 90 Days Past Due and Accruing	0	0
Non- accrual	19	19
Current	710,302	726,707
Loans and leases, net of unearned income	710,713	726,726
Construction - commercial | Financing Receivables, 30 to 59 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due and Non-accrual	392	0
Construction - commercial | Financing Receivables, 60 to 89 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due and Non-accrual	0	0
Construction - other
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due and Non-accrual	1,483	490
≥ 90 Days Past Due and Accruing	0	0
Non- accrual	187	490
Current	82,787	71,511
Loans and leases, net of unearned income	84,270	72,001
Construction - other | Financing Receivables, 30 to 59 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due and Non-accrual	1,296	0
Construction - other | Financing Receivables, 60 to 89 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due and Non-accrual	0	0
Real estate - construction
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due and Non-accrual	7,326	9,879
≥ 90 Days Past Due and Accruing	479	0
Non- accrual	3,833	7,390
Current	906,318	906,720
Loans and leases, net of unearned income	913,644	916,599	979,857
Real estate - construction | Financing Receivables, 30 to 59 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due and Non-accrual	3,014	2,489
Real estate - construction | Financing Receivables, 60 to 89 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due and Non-accrual	0	0
Consumer
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due and Non-accrual	735	404
≥ 90 Days Past Due and Accruing	94	66
Non- accrual	0	0
Current	64,066	55,629
Loans and leases, net of unearned income	64,801	56,033
Consumer | Financing Receivables, 30 to 59 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due and Non-accrual	521	267
Consumer | Financing Receivables, 60 to 89 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due and Non-accrual	120	71
Consumer - indirect
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due and Non-accrual	3,493	3,748
≥ 90 Days Past Due and Accruing	148	343
Non- accrual	0	0
Current	395,919	359,405
Loans and leases, net of unearned income	399,412	363,153
Consumer - indirect | Financing Receivables, 30 to 59 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due and Non-accrual	2,890	2,908
Consumer - indirect | Financing Receivables, 60 to 89 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due and Non-accrual	455	497
Consumer
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due and Non-accrual	4,228	4,152
≥ 90 Days Past Due and Accruing	242	409
Non- accrual	0	0
Current	459,985	415,034
Loans and leases, net of unearned income	464,213	419,186	390,708
Consumer | Financing Receivables, 30 to 59 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due and Non-accrual	3,411	3,175
Consumer | Financing Receivables, 60 to 89 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due and Non-accrual	575	568
Equipment lease financing, other and overdrafts
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due and Non-accrual	18,732	20,889
≥ 90 Days Past Due and Accruing	247	319
Non- accrual	17,419	19,268
Current	274,239	267,112
Loans and leases, net of unearned income	292,971	288,001	$ 285,021
Equipment lease financing, other and overdrafts | Financing Receivables, 30 to 59 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due and Non-accrual	923	1,005
Equipment lease financing, other and overdrafts | Financing Receivables, 60 to 89 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due and Non-accrual	$ 143	$ 297

Loans and Allowance for Cred_14

Loans and Allowance for Credit Losses Loans Modified Under Troubled Debt Restructurings (Details) - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Financing Receivable, Modifications [Line Items]
Total Accruing Troubled Debt Restructurings	$ 58,910	$ 61,605
Non-accrual TDRs (1)	23,553	28,659
Total TDRs	82,463	90,264
Residential Mortgage [Member]
Financing Receivable, Modifications [Line Items]
Total Accruing Troubled Debt Restructurings	21,762	24,102
Commercial Real Estate [Member]
Financing Receivable, Modifications [Line Items]
Total Accruing Troubled Debt Restructurings	16,444	15,685
Real-estate - home equity
Financing Receivable, Modifications [Line Items]
Total Accruing Troubled Debt Restructurings	15,505	16,665
Commercial
Financing Receivable, Modifications [Line Items]
Total Accruing Troubled Debt Restructurings	5,192	5,143
Consumer
Financing Receivable, Modifications [Line Items]
Total Accruing Troubled Debt Restructurings	$ 7	$ 10

Loans and Allowance for Cred_15

Loans and Allowance for Credit Losses Troubled Debt Restructuring Modification (Details) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019USD ($)loans	Sep. 30, 2018USD ($)loans	Sep. 30, 2019USD ($)loans	Sep. 30, 2018USD ($)loans
Financing Receivable, Modifications [Line Items]
Number of Loans | loans	17	30	66	90
Post-Modification Recorded Investment | $	$ 1,335	$ 2,512	$ 9,553	$ 15,049
Commercial
Financing Receivable, Modifications [Line Items]
Number of Loans | loans	3	2	13	13
Post-Modification Recorded Investment | $	$ 97	$ 913	$ 4,928	$ 10,325
Real-estate - commercial mortgage
Financing Receivable, Modifications [Line Items]
Number of Loans | loans	1	0	1	0
Post-Modification Recorded Investment | $	$ 81	$ 0	$ 81	$ 0
Real-estate - home equity
Financing Receivable, Modifications [Line Items]
Number of Loans | loans	12	24	46	71
Post-Modification Recorded Investment | $	$ 327	$ 1,002	$ 2,281	$ 4,045
Residential Mortgage [Member]
Financing Receivable, Modifications [Line Items]
Number of Loans | loans	1	4	6	6
Post-Modification Recorded Investment | $	$ 830	$ 597	$ 2,263	$ 679

Loans and Allowance for Cred_16

Loans and Allowance for Credit Losses TDRs by Class Segment (Details) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019USD ($)loans	Sep. 30, 2018USD ($)loans	Sep. 30, 2019USD ($)loans	Sep. 30, 2018USD ($)loans
Financing Receivable, Modifications [Line Items]
Post-Modification Recorded Investment	$ 1,335	$ 2,512	$ 9,553	$ 15,049
Number of Loans | loans	17	30	66	90
Number of Loans | loans			21	37
Recorded Investment			$ 1,078	$ 7,809
Real estate - residential mortgage
Financing Receivable, Modifications [Line Items]
Number of Loans | loans			1	6
Recorded Investment			$ 231	$ 724
Real-estate - commercial mortgage
Financing Receivable, Modifications [Line Items]
Post-Modification Recorded Investment	$ 81	$ 0	$ 81	$ 0
Number of Loans | loans	1	0	1	0
Number of Loans			0	2
Recorded Investment			$ 0	$ 452
Real-estate - home equity
Financing Receivable, Modifications [Line Items]
Post-Modification Recorded Investment	$ 327	$ 1,002	$ 2,281	$ 4,045
Number of Loans | loans	12	24	46	71
Number of Loans | loans			16	25
Recorded Investment			$ 657	$ 1,591
Commercial
Financing Receivable, Modifications [Line Items]
Post-Modification Recorded Investment	$ 97	$ 913	$ 4,928	$ 10,325
Number of Loans | loans	3	2	13	13
Number of Loans | loans			4	4
Recorded Investment			$ 190	$ 5,042

Loans and Allowance for Cred_17

Loans and Allowance for Credit Losses Narrative (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018	Dec. 31, 2018
Accounts, Notes, Loans and Financing Receivable [Line Items]
Provision for credit losses	$ 2,170	$ 1,620	$ 12,295	$ 38,707
Loans charged off	$ 10,128	$ 6,883	$ 20,208	$ 55,440
Impaired loans with principal balances approximately in percentage			73.00%	89.00%
Loan to value ratio in the Corporation's policy	70.00%		70.00%
Recorded investment, with no related allowance	$ 74,742		$ 74,742		$ 77,566
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) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018	Dec. 31, 2018
Amortized Cost:
Fair value of MSRs	$ 44,000		$ 44,000		$ 50,200
Residential Mortgage [Member]
Amortized Cost:
Balance at beginning of period	38,826	$ 37,894	38,573	$ 37,663
Originations of mortgage servicing rights	2,499	2,018	5,585	5,247
Amortization	(1,970)	(1,684)	(4,803)	(4,682)
Balance at end of period	$ 39,355	$ 38,228	$ 39,355	$ 38,228

Leases Narrative (Details)

Leases Narrative (Details) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2019	Dec. 31, 2018
Lessee, Lease, Description [Line Items]
Operating lease, option to extend, term	P5Y
2019		$ 18,000
2020		17,300
2021		15,700
2022		13,700
2023		11,400
Thereafter		$ 43,300
Minimum
Lessee, Lease, Description [Line Items]
Operating lease, remaining lease term	1 year
Maximum
Lessee, Lease, Description [Line Items]
Operating lease, remaining lease term	20 years

Leases Costs and Supplemental I

Leases Costs and Supplemental Information (Details) $ in Thousands	3 Months Ended	9 Months Ended
	Sep. 30, 2019USD ($)	Sep. 30, 2019USD ($)
Leases [Abstract]
Operating lease expense	$ 4,654	$ 14,140
Variable lease expense	786	2,156
Sublease income	(239)	(610)
Total lease expense	5,201	15,686
ROU assets	104,746	104,746
Lease liabilities	$ 111,617	$ 111,617
Weighted average remaining lease term	8 years 3 months 18 days	8 years 3 months 18 days
Weighted average discount rate	3.05%	3.05%
Cash paid for amounts included in the measurement of lease liabilities		$ 13,913
ROU assets obtained in exchange for lease obligations		$ 115,681

Leases Payment Obligations (Det

Leases Payment Obligations (Details) $ in Thousands	Sep. 30, 2019USD ($)
Operating Lease Liabilities, Payments Due [Abstract]
For the three months ending December 31, 2019	$ 6,304
2020	18,761
2021	17,623
2022	16,349
2023	14,094
Thereafter	54,809
Total lease payments	127,940
Less: imputed interest	(16,323)
Present value of lease liabilities	$ 111,617

Derivative Financial Instrume_3

Derivative Financial Instruments Narrative (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018	Dec. 31, 2018
Derivative [Line Items]
Assets	$ 21,703,618		$ 21,703,618		$ 20,682,152
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	(499)	$ 334	(174)	$ 207
Fulton Bank Subsidiary [Member]
Derivative [Line Items]
Assets	$ 10,000,000		$ 10,000,000

Derivative Financial Instrume_4

Derivative Financial Instruments Notional Amounts and Fair Values of Derivative Financial Instruments (Details) - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Derivative [Line Items]
Derivative asset, fair value	$ 193,897	$ 61,688
Derivative liability, gross liability	(105,044)	(47,237)
Interest Rate Lock Commitments [Member]
Derivative [Line Items]
Derivative asset, notional amount	179,038	101,700
Derivative liability, notional amount	5,647	1,646
Derivative asset, fair value	1,722	1,148
Derivative liability, gross liability	(33)	(12)
Forward Commitments [Member]
Derivative [Line Items]
Derivative asset, notional amount	39,874	1,540
Derivative liability, notional amount	96,000	83,562
Derivative asset, fair value	95	3
Derivative liability, gross liability	(254)	(1,066)
Interest Rate Swap with Customer [Member]
Derivative [Line Items]
Derivative asset, notional amount	2,947,777	1,185,144
Derivative liability, notional amount	75,840	1,386,046
Derivative asset, fair value	193,405	33,258
Derivative liability, gross liability	(186)	(30,769)
Interest Rate Swap With Counterparty [Member]
Derivative [Line Items]
Derivative asset, notional amount	75,840	1,386,046
Derivative liability, notional amount	2,947,777	1,185,144
Derivative asset, fair value	186	28,143
Derivative liability, gross liability	(104,544)	(16,338)
Foreign Exchange Contracts With Customer [Member]
Derivative [Line Items]
Derivative asset, notional amount	10,069	5,881
Derivative liability, notional amount	1,691	9,690
Derivative asset, fair value	327	105
Derivative liability, gross liability	(165)	(251)
Foreign Exchange Contracts With Correspondent Banks [Member]
Derivative [Line Items]
Derivative asset, notional amount	4,329	9,220
Derivative liability, notional amount	11,953	6,831
Derivative asset, fair value	208	287
Derivative liability, gross liability	$ (315)	$ (130)

Derivative Financial Instrume_5

Derivative Financial Instruments Fair Value Gains and Losses on Derivative Financial Instruments (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Derivative [Line Items]
Net fair value gains on derivative financial instruments	$ 904	$ 400	$ 1,699	$ 466
Mortgage Banking Derivatives [Member]
Derivative [Line Items]
Net fair value gains on derivative financial instruments	843	441	1,457	486
Interest Rate Swap [Member]
Derivative [Line Items]
Net fair value gains on derivative financial instruments	51	18	198	17
Foreign Exchange Contract [Member]
Derivative [Line Items]
Net fair value gains on derivative financial instruments	$ 10	$ (59)	$ 44	$ (37)

Derivative Financial Instrume_6

Derivative Financial Instruments Summary of Mortgage Loans Held For Sale (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018	Dec. 31, 2018
Fair Value, Option, Quantitative Disclosures [Line Items]
Loans Held-for-sale, Mortgages	$ 33,945		$ 33,945		$ 27,099
Mortgage Loans Held For Sale [Member]
Fair Value, Option, Quantitative Disclosures [Line Items]
Fair Value, Option, Changes in Fair Value, Gain (Loss)	(499)	$ 334	(174)	$ 207
Cost [Member] | Mortgage Loans Held For Sale [Member]
Fair Value, Option, Quantitative Disclosures [Line Items]
Loans Held-for-sale, Mortgages	33,427		33,427		26,407
Fair value [Member] | Mortgage Loans Held For Sale [Member]
Fair Value, Option, Quantitative Disclosures [Line Items]
Loans Held-for-sale, Mortgages	$ 33,945		$ 33,945		$ 27,099

Derivative Financial Instrume_7

Derivative Financial Instruments Offsetting Derivative Assets and Liabilities (Details) - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Offsetting Assets [Line Items]
Derivative asset, fair value	$ 193,897	$ 61,688
Derivative, Collateral, Obligation to Return Securities	403	13,085
Derivative, Collateral, Obligation to Return Cash	0	(23,270)
Net Amount	193,494	25,333
Derivative liability, gross liability	105,044	47,237
Derivative liability, Collateral, Right to Reclaim Securities	(403)	(22,916)
Derivative liability, Collateral, Right to Reclaim Cash	(104,523)	(22,786)
Derivative liability, Net Amount	118	1,535
Interest Rate Swap [Member]
Offsetting Assets [Line Items]
Derivative asset, fair value	193,701	61,401
Derivative, Collateral, Obligation to Return Securities	207	12,955
Derivative, Collateral, Obligation to Return Cash	0	(23,270)
Net Amount	193,494	25,176
Derivative liability, gross liability	104,730	47,107
Derivative liability, Collateral, Right to Reclaim Securities	(207)	(22,786)
Derivative liability, Collateral, Right to Reclaim Cash	(104,523)	(22,786)
Derivative liability, Net Amount	0	1,535
Foreign Exchange Contract [Member]
Offsetting Assets [Line Items]
Derivative asset, fair value	196	287
Derivative, Collateral, Obligation to Return Securities	196	130
Derivative, Collateral, Obligation to Return Cash	0	0
Net Amount	0	157
Derivative liability, gross liability	314	130
Derivative liability, Collateral, Right to Reclaim Securities	(196)	(130)
Derivative liability, Collateral, Right to Reclaim Cash	0	0
Derivative liability, Net Amount	$ 118	$ 0

Tax Credit Investments (Details

Tax Credit Investments (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018	Dec. 31, 2018
Income Tax Disclosure [Abstract]
Affordable housing tax credit investment, net	$ 159,502		$ 159,502		$ 170,401
Other tax credit investments, net	64,922		64,922		72,584
Total TCIs, net	224,424		224,424		242,985
Unfunded affordable housing tax credit commitments	19,727		19,727		23,196
Other tax credit investment liabilities	54,623		54,623		59,823
Total unfunded tax credit investment commitments and liabilities	74,350		74,350		$ 83,019
Affordable housing tax credits and other tax benefits	(7,852)	$ (8,555)	(23,002)	$ (23,642)
Other tax credit investment credits and tax benefits	(1,136)	(1,596)	(3,407)	(4,789)
Amortization of affordable housing investments, net of tax benefit	5,649	5,459	16,638	16,376
Deferred tax expense	238	336	715	1,007
Total reduction in income tax expense	(3,101)	(4,356)	(9,056)	(11,048)
Affordable housing tax credits investment	863	839	2,508	2,517
Other tax credit investment amortization	670	798	2,008	2,394
Total amortization of TCIs	$ 1,533	$ 1,637	$ 4,516	$ 4,911

Accumulated Other Comprehensi_3

Accumulated Other Comprehensive Income Changes in Other Comprehensive Income (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Accumulated Other Comprehensive Income (Loss) [Line Items]
Unrealized gain on securities, before tax amount	$ 23,150	$ (15,865)	$ 81,207	$ (59,250)
Unrealized gain on securities, tax effect	(5,121)	3,334	(17,963)	12,444
Unrealized gain on securities, net of tax amount	18,029	(12,531)	63,244	(46,806)
Reclassification adjustment for securities gains included in net income, before tax amount	(4,492)	(14)	(4,733)	(37)
Reclassification adjustment for securities gains included in net income, tax effect	994	3	1,047	7
Reclassification adjustment for securities gains included in net income, net of tax amount	(3,498)	(11)	(3,686)	(30)
Other Comprehensive Income (Loss), Reclassification Adjustment From AOCI For Amortization Of Unrealized Losses On Investments Transferred From Available-For-Sale To Held-To-Maturity, Before Tax	4,405	1,000		1,000
Other Comprehensive Income (Loss), Reclassification Adjustment From AOCI For Amortization Of Unrealized Losses On Investments Transferred From Available-For-Sale To Held-To-Maturity, Tax	(974)	(209)		(209)
Other Comprehensive Income (Loss), Reclassification Adjustment From AOCI For Amortization Of Unrealized Losses On Investments Transferred From Available-For-Sale To Held-To Maturity, After Tax	3,430	791	5,425	791
Other Comprehensive Income (Loss), Reclassification Adjustment From AOCI For Investment Transferred From Available-For-Sale To Held-To-Maturity, Before Tax			6,966
Other Comprehensive Income (Loss), Reclassification Adjustment From AOCI For Investment Transferred From Available-For-Sale To Held-To-Maturity, Tax			(1,541)
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI for Investment Transferred from Available-for-sale to Held-to-maturity, after Tax			5,425
Non-credit related unrealized gains on other-than-temporarily impaired debt securities, before tax amount			(875)	294
Non-credit related unrealized gains on other-than-temporarily impaired debt securities, tax effect			193	(62)
Non-credit related unrealized gains on other-than-temporarily impaired debt securities, net of tax amount	0	0	(682)	232
Amortization of net unrecognized pension and postretirement items, before tax amount	357	466	1,083	1,580
Amortization of net unrecognized pension and postretirement items, tax effect	(80)	(97)	(240)	(332)
Amortization of net unrecognized pension and postretirement items, net of tax amount	277	369	843	1,248
Total Other Comprehensive Income, Before Tax Amount	23,419	(14,413)	83,648	(56,413)
Total Other Comprehensive Income, Tax Effect	(5,181)	3,031	(18,504)	11,848
Other Comprehensive Income (Loss)	$ 18,238	$ (11,382)	65,144	$ (44,565)
Accounting Standards Update 2019-04 [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Other Comprehensive Income (Loss), Reclassification Adjustment From AOCI For Investment Transferred From Available-For-Sale To Held-To-Maturity, Before Tax			$ 3,700

Accumulated Other Comprehensi_4

Accumulated Other Comprehensive Income Components of Other Comprehensive Income (Details) - USD ($) $ in Thousands		3 Months Ended		9 Months Ended
		Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Accumulated Other Comprehensive Income [Roll Forward]
Beginning Balance		$ 2,308,798	$ 2,245,785	$ 2,247,573	$ 2,229,857
Amortization of net unrealized losses on AFS securities transferred to HTM				5,425
Ending Balance		2,324,016	2,283,014	2,324,016	2,283,014
Unrealized Gains (Losses) on Investment Securities Not Other-Than-Temporarily Impaired
Accumulated Other Comprehensive Income [Roll Forward]
Beginning Balance		2,368	(56,690)	(44,654)	(18,509)
Other comprehensive income before reclassifications		18,029	(12,531)	63,244	(46,806)
Amounts reclassified from accumulated other comprehensive income (loss)		(3,498)	(11)	(3,686)	(30)
Amortization of net unrealized losses on AFS securities transferred to HTM				5,425	791
Reclassification of stranded tax effects					(3,887)
Ending Balance		20,329	(68,441)	20,329	(68,441)
Unrealized Non-Credit Gains (Losses) on Other-Than-Temporarily Impaired Debt Securities
Accumulated Other Comprehensive Income [Roll Forward]
Beginning Balance		(2)	690	680	458
Other comprehensive income before reclassifications		0	0	(682)	232
Amounts reclassified from accumulated other comprehensive income (loss)		0	0	0	0
Amortization of net unrealized losses on AFS securities transferred to HTM				0	0
Reclassification of stranded tax effects					0
Ending Balance		(2)	690	(2)	690
Unrecognized Pension and Postretirement Plan Income (Costs)
Accumulated Other Comprehensive Income [Roll Forward]
Beginning Balance		(14,523)	(17,258)	(15,089)	(14,923)
Other comprehensive income before reclassifications		0	0	0	0
Amounts reclassified from accumulated other comprehensive income (loss)		277	369	843	1,248
Amortization of net unrealized losses on AFS securities transferred to HTM				0	0
Reclassification of stranded tax effects					(3,214)
Ending Balance		(14,246)	(16,889)	(14,246)	(16,889)
Total
Accumulated Other Comprehensive Income [Roll Forward]
Beginning Balance		(12,157)	(73,258)	(59,063)	(32,974)
Other comprehensive income before reclassifications		18,029	(12,531)	62,562	(46,574)
Amounts reclassified from accumulated other comprehensive income (loss)		(3,221)	358	(2,843)	1,218
Amortization of net unrealized losses on AFS securities transferred to HTM				5,425	791
Reclassification of stranded tax effects	[1]				(7,101)
Ending Balance		6,081	(84,640)	$ 6,081	$ (84,640)
Reclassification out of Accumulated Other Comprehensive Income
Accumulated Other Comprehensive Income [Roll Forward]
Amounts reclassified from accumulated other comprehensive income (loss)		3,430	791
Reclassification out of Accumulated Other Comprehensive Income | Unrealized Gains (Losses) on Investment Securities Not Other-Than-Temporarily Impaired
Accumulated Other Comprehensive Income [Roll Forward]
Amounts reclassified from accumulated other comprehensive income (loss)		3,430	791
Reclassification out of Accumulated Other Comprehensive Income | Unrealized Non-Credit Gains (Losses) on Other-Than-Temporarily Impaired Debt Securities
Accumulated Other Comprehensive Income [Roll Forward]
Amounts reclassified from accumulated other comprehensive income (loss)		0	0
Reclassification out of Accumulated Other Comprehensive Income | Unrecognized Pension and Postretirement Plan Income (Costs)
Accumulated Other Comprehensive Income [Roll Forward]
Amounts reclassified from accumulated other comprehensive income (loss)		$ 0	$ 0
[1]	The Corporation adopted the Accounting Standards Codification ("ASC") Update 2018-02, "Income Statement - Reporting Comprehensive Income (Topic 220): Reclassification of Certain Tax Effects from Accumulated Other Comprehensive Income" in the first quarter of 2018 which permitted a reclassification from accumulated other comprehensive income ("AOCI") to retained earnings of the stranded tax effects resulting from the Tax Cuts and Jobs Act of 2017, which changed the federal corporate income tax rate from 35% to 21%. As a result, $7.1 million of stranded tax effects were reclassified from AOCI to retained earnings during the first quarter of 2018.

Fair Value Measurements Assets

Fair Value Measurements Assets and Liabilities Measured at Fair Value on a Recurring Basis (Details) - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Estimated Fair Value	$ 2,315,541	$ 2,080,294
Fair Value, Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Estimated Fair Value	2,315,541
Mortgages Held-for-sale, Fair Value Disclosure	33,945	27,099
Available-for-sale Securities, Fair Value Disclosure		2,080,294
Investments held in Rabbi Trust	20,853	18,415
Derivative assets	195,798	62,944
Assets, Fair Value Disclosure	2,566,137	2,188,752
Liabilities Held-In-Trust, Fair Value Disclosure	20,853	18,415
Derivative Liability	105,496	48,566
Total liabilities	126,349	66,981
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		31,632
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		31,632
US States and Political Subdivisions Debt Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Estimated Fair Value	547,344
Available-for-sale Securities, Fair Value Disclosure		279,095
US States and Political Subdivisions Debt Securities [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Estimated Fair Value	547,344
Available-for-sale Securities, Fair Value Disclosure		279,095
Corporate Debt Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Estimated Fair Value	358,406
Available-for-sale Securities, Fair Value Disclosure		109,533
Corporate Debt Securities [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Estimated Fair Value	358,406
Available-for-sale Securities, Fair Value Disclosure		109,533
Collateralized Mortgage Obligations [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Estimated Fair Value	700,599
Available-for-sale Securities, Fair Value Disclosure		832,080
Collateralized Mortgage Obligations [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Estimated Fair Value	700,599
Available-for-sale Securities, Fair Value Disclosure		832,080
Mortgage-Backed Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Estimated Fair Value	183,785
Available-for-sale Securities, Fair Value Disclosure		463,344
Mortgage-Backed Securities [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Estimated Fair Value	183,785
Available-for-sale Securities, Fair Value Disclosure		463,344
Commercial Mortgage Backed Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Estimated Fair Value	422,109
Available-for-sale Securities, Fair Value Disclosure		261,616
Commercial Mortgage Backed Securities [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Estimated Fair Value	422,109
Available-for-sale Securities, Fair Value Disclosure		261,616
Auction Rate Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Estimated Fair Value	103,298
Available-for-sale Securities, Fair Value Disclosure		102,994
Auction Rate Securities [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Estimated Fair Value	103,298
Available-for-sale Securities, Fair Value Disclosure		102,994
Single-issuer 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	18,500	18,600
Fair Value, Inputs, Level 1 [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Estimated Fair Value	0
Mortgages Held-for-sale, Fair Value Disclosure	0	0
Available-for-sale Securities, Fair Value Disclosure		0
Investments held in Rabbi Trust	20,853	18,415
Derivative assets	535	392
Assets, Fair Value Disclosure	21,388	18,807
Liabilities Held-In-Trust, Fair Value Disclosure	20,853	18,415
Derivative Liability	480	381
Total liabilities	21,333	18,796
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
Fair Value, Inputs, Level 1 [Member] | US States and Political Subdivisions Debt Securities [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Estimated Fair Value	0
Available-for-sale Securities, Fair Value Disclosure		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]
Estimated Fair Value	0
Available-for-sale Securities, Fair Value Disclosure		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]
Estimated Fair Value	0
Available-for-sale Securities, Fair Value Disclosure		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]
Estimated Fair Value	0
Available-for-sale Securities, Fair Value Disclosure		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]
Estimated Fair Value	0
Available-for-sale Securities, Fair Value Disclosure		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]
Estimated Fair Value	0
Available-for-sale Securities, Fair Value Disclosure		0
Fair Value, Inputs, Level 2 [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Estimated Fair Value	2,209,873
Mortgages Held-for-sale, Fair Value Disclosure	33,945	27,099
Available-for-sale Securities, Fair Value Disclosure		1,974,025
Investments held in Rabbi Trust	0	0
Derivative assets	195,263	62,552
Assets, Fair Value Disclosure	2,439,081	2,063,676
Liabilities Held-In-Trust, Fair Value Disclosure	0	0
Derivative Liability	105,016	48,185
Total liabilities	105,016	48,185
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	3,900	3,900
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	336,000	86,100
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		31,632
Fair Value, Inputs, Level 2 [Member] | US States and Political Subdivisions Debt Securities [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Estimated Fair Value	547,344
Available-for-sale Securities, Fair Value Disclosure		279,095
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]
Estimated Fair Value	356,036
Available-for-sale Securities, Fair Value Disclosure		106,258
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]
Estimated Fair Value	700,599
Available-for-sale Securities, Fair Value Disclosure		832,080
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]
Estimated Fair Value	183,785
Available-for-sale Securities, Fair Value Disclosure		463,344
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]
Estimated Fair Value	422,109
Available-for-sale Securities, Fair Value Disclosure		261,616
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]
Estimated Fair Value	0
Available-for-sale Securities, Fair Value Disclosure		0
Fair Value, Inputs, Level 2 [Member] | Single-issuer 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	16,100	16,300
Fair Value, Inputs, Level 3 [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Estimated Fair Value	105,668
Mortgages Held-for-sale, Fair Value Disclosure	0	0
Available-for-sale Securities, Fair Value Disclosure		106,269
Investments held in Rabbi Trust	0	0
Derivative assets	0	0
Assets, Fair Value Disclosure	105,668	106,269
Liabilities Held-In-Trust, Fair Value Disclosure	0	0
Derivative Liability	0	0
Total liabilities	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	0	875
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
Fair Value, Inputs, Level 3 [Member] | US States and Political Subdivisions Debt Securities [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Estimated Fair Value	0
Available-for-sale Securities, Fair Value Disclosure		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]
Estimated Fair Value	2,370
Available-for-sale Securities, Fair Value Disclosure		3,275
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]
Estimated Fair Value	0
Available-for-sale Securities, Fair Value Disclosure		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]
Estimated Fair Value	0
Available-for-sale Securities, Fair Value Disclosure		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]
Estimated Fair Value	0
Available-for-sale Securities, Fair Value Disclosure		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]
Estimated Fair Value	103,298
Available-for-sale Securities, Fair Value Disclosure		102,994
Fair Value, Inputs, Level 3 [Member] | Single-issuer 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	$ 2,400	$ 2,400

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, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Pooled Trust Preferred Securities [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Balance, beginning of period	$ 0	$ 875	$ 875	$ 707
Sales			(770)
Fair Value Adjustment From Transfers Of Debt Securities Available-For-Sale To Debt Securities Held-To-Maturity		0		0
Unrealized adjustment to fair value	0	0	(105)	168
Settlements - calls		0		0
(Premium amortization) discount accretion	0	0	0	0
Balance, end of period	0	875	0	875
Single-issuer Trust Preferred Securities [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Balance, beginning of period	2,370	3,200	2,400	3,050
Sales			0
Fair Value Adjustment From Transfers Of Debt Securities Available-For-Sale To Debt Securities Held-To-Maturity		71		71
Unrealized adjustment to fair value	(2)	153	(32)	297
Settlements - calls		(950)		(950)
(Premium amortization) discount accretion	2	1	2	7
Balance, end of period	2,370	2,475	2,370	2,475
Auction Rate Securities [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Balance, beginning of period	103,365	103,122	102,994	98,668
Sales			0
Fair Value Adjustment From Transfers Of Debt Securities Available-For-Sale To Debt Securities Held-To-Maturity		0		0
Unrealized adjustment to fair value	(67)	11	304	4,465
Settlements - calls		0		0
(Premium amortization) discount accretion	0	0	0	0
Balance, end of period	$ 103,298	$ 103,133	$ 103,298	$ 103,133

Fair Value Measurements Asset_2

Fair Value Measurements Assets Measured at Fair Value on a Nonrecurring Basis (Details) - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
OREO	$ 7,706	$ 10,518
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	146,682	149,846
OREO	7,706	10,518
MSRs (1)	43,968	50,200
Assets, Fair Value Disclosure	$ 198,356	$ 210,564

Fair Value Measurements Details

Fair Value Measurements Details of Book Value and Fair Value of Financial Instruments (Details) - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Fair Value, Balance Sheet Grouping, FinancialStatement Captions[Line Items]
Held to maturity investment securities	$ 403,957	$ 611,419
Estimated Fair Value	2,315,541	2,080,294
Reported Value Measurement [Member]
Fair Value, Balance Sheet Grouping, FinancialStatement Captions[Line Items]
Cash and due from banks	598,613	445,687
FRB and FHLB stock	94,557	79,283
Loans held for sale	33,945	27,099
Held to maturity investment securities	390,069	606,679
Estimated Fair Value	2,315,541	2,080,294
Net Loans	16,520,731	16,005,263
Accrued interest receivable	60,447	58,879
Other financial assets	478,924	235,782
Demand and savings deposits	14,105,974	13,478,016
Brokered deposits	256,870	176,239
Time deposits	2,979,873	2,721,904
Short-term borrowings	832,860	754,777
Accrued interest payable	9,622	10,529
Other financial liabilities	288,477	218,061
FHLB advances and long-term debt	726,714	992,279
Estimate of Fair Value Measurement [Member]
Fair Value, Balance Sheet Grouping, FinancialStatement Captions[Line Items]
Cash and due from banks	598,613	445,687
FRB and FHLB stock	94,557	79,283
Loans held for sale	33,945	27,099
Held to maturity investment securities	403,957	611,419
Estimated Fair Value	2,315,541	2,080,294
Net Loans	16,427,675	15,446,895
Accrued interest receivable	60,447	58,879
Other financial assets	483,536	235,782
Demand and savings deposits	14,105,974	13,478,016
Brokered deposits	257,420	176,239
Time deposits	3,002,796	2,712,296
Short-term borrowings	832,860	754,777
Accrued interest payable	9,622	10,529
Other financial liabilities	288,477	218,061
FHLB advances and long-term debt	723,194	970,985
Fair Value, Inputs, Level 1 [Member] | Estimate of Fair Value Measurement [Member]
Fair Value, Balance Sheet Grouping, FinancialStatement Captions[Line Items]
Cash and due from banks	598,613	445,687
FRB and FHLB stock	0	0
Loans held for sale	0	0
Held to maturity investment securities	0	0
Estimated Fair Value	0	0
Net Loans	0	0
Accrued interest receivable	60,447	58,879
Other financial assets	236,599	124,138
Demand and savings deposits	14,105,974	13,478,016
Brokered deposits	216,870	176,239
Time deposits	0	0
Short-term borrowings	832,860	754,777
Accrued interest payable	9,622	10,529
Other financial liabilities	176,799	161,003
FHLB advances and long-term debt	0	0
Fair Value, Inputs, Level 2 [Member] | Estimate of Fair Value Measurement [Member]
Fair Value, Balance Sheet Grouping, FinancialStatement Captions[Line Items]
Cash and due from banks	0	0
FRB and FHLB stock	94,557	79,283
Loans held for sale	33,945	27,099
Held to maturity investment securities	403,957	611,419
Estimated Fair Value	2,209,873	1,974,025
Net Loans	0	0
Accrued interest receivable	0	0
Other financial assets	195,263	62,552
Demand and savings deposits	0	0
Brokered deposits	40,550	0
Time deposits	3,002,796	2,712,296
Short-term borrowings	0	0
Accrued interest payable	0	0
Other financial liabilities	105,016	48,185
FHLB advances and long-term debt	723,194	970,985
Fair Value, Inputs, Level 3 [Member] | Estimate of Fair Value Measurement [Member]
Fair Value, Balance Sheet Grouping, FinancialStatement Captions[Line Items]
Cash and due from banks	0	0
FRB and FHLB stock	0	0
Loans held for sale	0	0
Held to maturity investment securities	0	0
Estimated Fair Value	105,668	106,269
Net Loans	16,427,675	15,446,895
Accrued interest receivable	0	0
Other financial assets	51,674	49,092
Demand and savings deposits	0	0
Brokered deposits	0	0
Time deposits	0	0
Short-term borrowings	0	0
Accrued interest payable	0	0
Other financial liabilities	6,662	8,873
FHLB advances and long-term debt	$ 0	$ 0

Fair Value Measurements Narrati

Fair Value Measurements Narrative (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
	Sep. 30, 2019	Sep. 30, 2019	Dec. 31, 2018
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Securities valued by the pricing service	95.00%	95.00%
Researched securities to reconcile the difference	5.00%	5.00%
Available for sale, at estimated fair value	$ 2,315,541	$ 2,315,541	$ 2,080,294
Significant input, assumed market return to liquidity (years)	5 years
Other real estate owned (OREO)	$ 7,706	$ 7,706	10,518
Minimum
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Weighted average annual constant prepayment rate		10.70%
Weighted average discount rate		10.00%
Fair Value, Measurements, Recurring [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Available for sale, at estimated fair value	2,315,541	$ 2,315,541
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 1 [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Available for sale, at estimated fair value	0	0
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Available for sale, at estimated fair value	2,209,873	2,209,873
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 3 [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Available for sale, at estimated fair value	105,668	105,668
Fair Value, Measurements, Recurring [Member] | Financial Institutions Subordinated Debt [Member] | Fair Value, Inputs, Level 2 [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Available for sale, at estimated fair value	336,000	336,000	86,100
Fair Value, Measurements, Recurring [Member] | Single-issuer Trust Preferred Securities [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Available for sale, at estimated fair value	18,500	18,500	18,600
Fair Value, Measurements, Recurring [Member] | Single-issuer Trust Preferred Securities [Member] | Fair Value, Inputs, Level 2 [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Available for sale, at estimated fair value	16,100	16,100	16,300
Fair Value, Measurements, Recurring [Member] | Single-issuer Trust Preferred Securities [Member] | Fair Value, Inputs, Level 3 [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Available for sale, at estimated fair value	2,400	2,400	2,400
Fair Value, Measurements, Recurring [Member] | Pooled Trust Preferred Securities [Member] | Fair Value, Inputs, Level 3 [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Available for sale, at estimated fair value	0	0	875
Fair Value, Measurements, Recurring [Member] | Other Corporate Debt [Member] | Fair Value, Inputs, Level 2 [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Available for sale, at estimated fair value	3,900	3,900	3,900
Fair Value, Measurements, Recurring [Member] | Foreign Exchange Contract [Member] | Fair Value, Inputs, Level 1 [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Other financial liabilities	480	480	381
Fair Value, Measurements, Nonrecurring [Member] | Fair Value, Inputs, Level 3 [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Other real estate owned (OREO)	7,706	7,706	10,518
Net MSRs at end of period	43,968	43,968	50,200
Foreign Exchange Contract [Member] | Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 1 [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Other financial assets	535	535	392
Forward Commitments [Member] | Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Other financial assets	1,800	1,800	1,200
Other financial liabilities	287	287	1,100
Interest Rate Swap [Member] | Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Other financial assets	193,600	193,600	61,400
Other financial liabilities	$ 104,700	$ 104,700	$ 47,100

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, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Weighted Average Number of Shares Outstanding Reconciliation [Abstract]
Weighted average shares outstanding (basic) (in shares)	165,324	175,942	167,834	175,672
Impact of common stock equivalents (in shares)	802	1,186	888	1,176
Weighted average shares outstanding (diluted) (in shares)	166,126	177,128	168,722	176,848
Basic (in dollars per share)	$ 0.38	$ 0.37	$ 1.06	$ 0.86
Diluted (in dollars per share)	$ 0.37	$ 0.37	$ 1.06	$ 0.85

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, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Compensation expense	$ 2,110	$ 1,823	$ 5,458	$ 6,007
Tax benefit	(451)	(492)	(1,194)	(2,028)
Stock-based compensation expense, net of tax benefit	$ 1,659	$ 1,331	$ 4,264	$ 3,979

Stock-Based Compensation Narrat

Stock-Based Compensation Narrative (Details) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Statement [Line Items]
Compensation expense	$ 2,110	$ 1,823	$ 5,458	$ 6,007
Stock-based compensation expense, net of tax benefit	$ 1,659	$ 1,331	$ 4,264	$ 3,979
Directors' Plan [Member]
Statement [Line Items]
Shares reserved for future grants under the stock option and compensation plan	264		264
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	10,200		10,200

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, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Pension Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Interest cost	$ 813	$ 763	$ 2,443	$ 2,290
Expected return on plan assets	(688)	(512)	(2,066)	(1,536)
Net amortization and deferral	496	607	1,486	1,822
Net periodic benefit	621	858	1,863	2,576
Other Postretirement Benefits Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Interest cost	15	13	45	42
Net accretion and deferral	(139)	(139)	(417)	(419)
Net periodic benefit	$ (124)	$ (126)	$ (372)	$ (377)

Commitments and Contingencies O

Commitments and Contingencies Outstanding Commitments to Extend Credit and Letters of Credit (Details) - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Commitments to Extend Credit [Member]
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Valuation allowances and reserves, balance	$ 6,872,248	$ 6,306,583
Standby Letters of Credit [Member]
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Valuation allowances and reserves, balance	308,533	309,352
Commercial Letters of Credit [Member]
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Valuation allowances and reserves, balance	$ 48,047	$ 48,682

Commitments and Contingencies -

Commitments and Contingencies - Narrative (Details) - USD ($) $ in Millions	Sep. 30, 2019	Dec. 31, 2018
Residential Mortgage [Member]
Loss Contingencies [Line Items]
Valuation allowances and reserves, balance	$ 2.5	$ 2.1