Fulton Financial (FULT) 10-Q 7 Aug 19 2019 Q2 Quarterly report Financial data

Cover Page

Cover Page - shares	6 Months Ended
	Jun. 30, 2019	Jul. 31, 2019
Cover page.
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Jun. 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		166,270,000
Entity Central Index Key	0000700564
Current Fiscal Year End Date	--12-31
Document Fiscal Year Focus	2019
Document Fiscal Period Focus	Q2
Amendment Flag	false

Consolidated Balance Sheets

Consolidated Balance Sheets - USD ($) $ in Thousands	Jun. 30, 2019	Dec. 31, 2018
ASSETS
Cash and due from banks	$ 107,091	$ 103,436
Interest-bearing deposits with other banks	391,720	342,251
Cash and cash equivalents	498,811	445,687
Federal Reserve Bank and Federal Home Loan Bank stock	97,248	79,283
Loans held for sale	45,754	27,099
Available for sale, at estimated fair value	2,285,794	2,080,294
Held to maturity, at amortized cost	567,564	606,679
Loans and leases, net of unearned income	16,368,458	16,165,800
Less: Allowance for loan and lease losses	(170,233)	(160,537)
Net Loans and leases	16,198,225	16,005,263
Premises and equipment	243,300	234,529
Accrued interest receivable	62,984	58,879
Goodwill and intangible assets	535,249	531,556
Other assets	773,741	612,883
Total Assets	21,308,670	20,682,152
LIABILITIES
Noninterest-bearing	4,226,404	4,310,105
Interest-bearing	12,162,491	12,066,054
Total Deposits	16,388,895	16,376,159
Short-Term Borrowings	1,188,390	754,777
Accrued interest payable	9,218	10,529
Other liabilities	425,953	300,835
Federal Home Loan Bank advances and long-term debt	987,416	992,279
Total Liabilities	18,999,872	18,434,579
SHAREHOLDERS’ EQUITY
Common stock, $2.50 par value, 600 million shares authorized, 222.3 million shares issued in 2019 and 221.8 million issued in 2018	555,690	554,377
Additional paid-in capital	1,493,628	1,489,703
Retained earnings	1,018,736	946,032
Accumulated other comprehensive loss	(12,157)	(59,063)
Treasury stock, at cost, 55.4 million shares in 2019 and 51.6 million shares in 2018	(747,099)	(683,476)
Total Shareholders’ Equity	2,308,798	2,247,573
Total Liabilities and Shareholders’ Equity	$ 21,308,670	$ 20,682,152

Consolidated Balance Sheets (Pa

Consolidated Balance Sheets (Parenthetical) - $ / shares	Jun. 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)	222,300,000	221,800,000
Treasury stock, shares (in shares)	55,400,000	51,600,000

Consolidated Statements of Inco

Consolidated Statements of Income - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
INTEREST INCOME
Loans and leases, including fees	$ 188,310	$ 167,825	$ 372,054	$ 327,961
Investment securities:
Taxable	15,935	13,885	31,370	27,083
Tax-exempt	3,271	2,933	6,550	5,898
Loans held for sale	350	284	590	500
Other interest income	2,168	1,243	4,170	2,415
Total Interest Income	210,034	186,170	414,734	363,857
INTEREST EXPENSE
Deposits	32,548	19,284	62,237	35,734
Short-term borrowings	4,462	3,036	8,044	5,077
Federal Home Loan Bank advances and long-term debt	8,480	7,783	16,594	15,661
Total Interest Expense	45,490	30,103	86,875	56,472
Net Interest Income	164,544	156,067	327,859	307,385
Provision for credit losses	5,025	33,117	10,125	37,087
Net Interest Income After Provision for Credit Losses	159,519	122,950	317,734	270,298
NON-INTEREST INCOME
Non-interest income before investment securities gains	54,139	49,090	100,825	94,946
Investment securities gains, net	176	4	241	23
Total Non-Interest Income	54,315	49,094	101,066	94,969
NON-INTEREST EXPENSE
Salaries and employee benefits	78,991	74,919	156,748	150,687
Net occupancy expense	14,469	12,760	27,378	26,392
Data processing and software	11,268	10,453	21,621	20,926
Other outside services	11,259	7,568	19,611	15,692
Amortization of tax credit investments	1,492	1,637	2,983	3,274
Intangible amortization	107	0	214	0
Professional fees	2,970	2,372	6,930	7,188
Marketing	3,299	3,434	6,641	6,968
FDIC insurance expense	2,755	2,663	5,364	5,616
Taxes, Other	2,480	2,454	4,482	4,756
Marketing	2,863	2,335	5,023	4,585
Other	12,215	12,750	24,997	23,922
Total Non-Interest Expense	144,168	133,345	281,992	270,006
Income Before Income Taxes	69,666	38,699	136,808	95,261
Income taxes	9,887	3,502	20,366	10,584
Net Income	$ 59,779	$ 35,197	$ 116,442	$ 84,677
PER SHARE:
Net Income (Basic) (in dollars per share)	$ 0.36	$ 0.20	$ 0.69	$ 0.48
Net Income (Diluted) (in dollars per share)	0.35	0.20	0.68	0.48
Cash Dividends (in dollars per share)	$ 0.13	$ 0.12	$ 0.26	$ 0.24
Investment management and trust services
NON-INTEREST INCOME
Non-interest income before investment securities gains	$ 14,153	$ 12,803	$ 27,392	$ 25,674
Other service charges and fees
NON-INTEREST INCOME
Non-interest income before investment securities gains	18,442	16,431	33,205	30,388
Service charges on deposit accounts
NON-INTEREST INCOME
Non-interest income before investment securities gains	12,367	11,931	23,744	23,340
Mortgage banking income
NON-INTEREST INCOME
Non-interest income before investment securities gains	6,593	5,163	11,365	9,356
Other income
NON-INTEREST INCOME
Non-interest income before investment securities gains	$ 2,584	$ 2,762	$ 5,119	$ 6,188

Consolidated Statements of Comp

Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Statement of Comprehensive Income [Abstract]
Net Income	$ 59,779	$ 35,197	$ 116,442	$ 84,677
Other Comprehensive Income (Loss), net of tax:
Unrealized gain (loss) on securities	24,917	(6,631)	45,215	(34,275)
Reclassification adjustment for securities gains included in net income	(137)	(3)	(188)	(19)
Amortization of net unrealized losses on available for sale securities transferred to held to maturity	1,021	0	1,995	0
Non-credit related unrealized (loss) gain on other-than-temporarily impaired debt securities	(600)	8	(682)	232
Amortization of net unrecognized pension and postretirement income	275	540	566	879
Other Comprehensive Income (Loss)	25,476	(6,086)	46,906	(33,183)
Total Comprehensive Income	$ 85,255	$ 29,111	$ 163,348	$ 51,494

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		84,677			84,677
Other comprehensive income		(33,183)				(33,183)
Stock issued (in shares)			661
Stock issued		2,455	$ 1,686	1,652			(883)
Stock-based compensation awards (in shares)			16
Stock-based compensation awards		4,184	$ 40	4,144
Reclassification of stranded tax effects	[1]				7,101	(7,101)
Common stock cash dividends		(42,205)			(42,205)
Ending Balance at Jun. 30, 2018		2,245,785	$ 553,958	1,484,185	871,192	(73,258)	(590,292)
Ending Balance (in shares) at Jun. 30, 2018			175,847
Beginning Balance at Mar. 31, 2018		2,235,493	$ 552,682	1,481,545	857,153	(67,172)	(588,715)
Beginning Balance (in shares) at Mar. 31, 2018			175,404
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net Income		35,197			35,197
Other comprehensive income		(6,086)				(6,086)
Stock issued (in shares)			427
Stock issued		(335)	$ 1,236	6			(1,577)
Stock-based compensation awards (in shares)			16
Stock-based compensation awards		2,674	$ 40	2,634
Common stock cash dividends		(21,158)			(21,158)
Ending Balance at Jun. 30, 2018		2,245,785	$ 553,958	1,484,185	871,192	(73,258)	(590,292)
Ending Balance (in shares) at Jun. 30, 2018			175,847
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		116,442
Other comprehensive income		46,906				46,906
Stock issued (in shares)			544
Stock issued		1,653	$ 1,313	577			(237)
Stock-based compensation awards (in shares)
Stock-based compensation awards		3,348		3,348
Acquisition of treasury stock (in shares)			(3,825)
Acquisition of treasury stock (in shares)		(63,386)					(63,386)
Common stock cash dividends		(43,738)			(43,738)
Ending Balance at Jun. 30, 2019		2,308,798	$ 555,690	1,493,628	1,018,736	(12,157)	(747,099)
Ending Balance (in shares) at Jun. 30, 2019			166,903
Beginning Balance at Mar. 31, 2019		2,301,019	$ 554,485	1,491,870	980,708	(37,633)	(688,411)
Beginning Balance (in shares) at Mar. 31, 2019			169,923
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net Income		59,779
Other comprehensive income		25,476				25,476
Stock issued (in shares)			429
Stock issued		(4)	$ 1,205	(30)			(1,179)
Stock-based compensation awards (in shares)
Stock-based compensation awards		1,788		1,788
Acquisition of treasury stock (in shares)			(3,449)
Acquisition of treasury stock (in shares)		(57,509)					(57,509)
Common stock cash dividends		(21,751)			(21,751)
Ending Balance at Jun. 30, 2019		$ 2,308,798	$ 555,690	$ 1,493,628	$ 1,018,736	$ (12,157)	$ (747,099)
Ending Balance (in shares) at Jun. 30, 2019			166,903
[1]	(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		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Statement of Stockholders' Equity [Abstract]
Cash dividends per share	$ 0.13	$ 0.12	$ 0.26	$ 0.24

Consolidated Statements of Cash

Consolidated Statements of Cash Flows - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018
CASH FLOWS FROM OPERATING ACTIVITIES:
Net Income	$ 116,442	$ 84,677
Adjustments to reconcile net income to net cash provided by operating activities:
Provision for credit losses	10,125	37,087
Depreciation and amortization of premises and equipment	13,924	14,580
Amortization of tax credit investments	16,311	16,729
Net amortization of investment securities premiums	4,359	4,856
Investment securities gains, net	(241)	(23)
Gain on sales of mortgage loans held for sale	(8,302)	(6,499)
Proceeds from sales of mortgage loans held for sale	375,306	379,399
Originations of mortgage loans held for sale	(385,659)	(377,268)
Amortization of intangible assets	214	0
Amortization of issuance costs and discounts on long-term debt	421	399
Stock-based compensation	3,348	4,184
Increase in accrued interest receivable	(4,105)	(2,298)
Increase in other assets	(217,816)	(10,687)
Increase in accrued interest payable	(1,311)	(1,024)
Increase (decrease) in other liabilities	155,832	(9,278)
Total adjustments	(37,594)	50,157
Net cash provided by operating activities	78,848	134,834
CASH FLOWS FROM INVESTING ACTIVITIES:
Proceeds from sales of securities available for sale	283,952	48,731
Proceeds from principal repayments and maturities of securities held to maturity	40,058	0
Proceeds from principal repayments and maturities of securities available for sale	113,154	170,141
Purchase of securities available for sale	(538,629)	(306,713)
Purchase of Federal Reserve Bank and Federal Home Loan Bank stock	(17,965)	(5,954)
Net increase in loans and leases	(205,404)	(65,361)
Net change in tax credit investments	(22,695)	(21,973)
Net cash paid for acquisition	(3,907)	0
Net change in tax credit investments	11,092	38,544
Net cash used in by investing activities	(362,528)	(219,673)
CASH FLOWS FROM FINANCING ACTIVITIES:
Net decrease in demand and savings deposits	(228,999)	(265,298)
Net increase in time deposits	241,735	67,565
Increase in short-term borrowings	433,613	366,309
Additions to long-term debt	105,000	50,000
Repayments of long-term debt	(110,132)	(100,081)
Net proceeds from issuance of common stock	1,653	2,455
Dividends paid	(42,680)	(40,378)
Acquisition of treasury stock	(63,386)	0
Net cash provided by financing activities	336,804	80,572
Net Increase (Decrease) in Cash and Cash Equivalents	53,124	(4,267)
Cash and Cash Equivalents at Beginning of Period	445,687	402,096
Cash and Cash Equivalents at End of Period	498,811	397,829
Cash paid during the period for:
Interest	88,186	57,496
Income taxes	$ 4,932	$ 5,794

Basis of Presentation

Basis of Presentation	6 Months Ended
	Jun. 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 six months ended June 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 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. 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 is a single impairment model for all financial assets (i.e., loans and held to maturity investments). The recognition of credit losses would be based on an entity’s current estimate of expected losses (referred to as the Current Expected Credit Loss model, or "CECL"), as opposed to recognition of losses only when they are 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. 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 Corporation believes that total credit loss reserves 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 off balance sheet credit exposures as well as the prevailing economic conditions and forecasts as of the adoption date. The Corporation is in the early stages of conducting parallel runs of its new processes and controls and is beginning its model validation process. The Corporation will continue to make refinements to its credit loss model throughout the remainder of 2019. 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 2020, in line with its annual impairment testing in October of each year 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 2012 impairment testing. 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. Standard Description Date of Anticipated Adoption Effect on 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	6 Months Ended
	Jun. 30, 2019
Cash and Cash Equivalents [Abstract]
Restrictions on Cash and Cash Equivalents	Restrictions on Cash and Cash Equivalents The Corporation’s subsidiary banks are required to maintain reserves against their 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 June 30, 2019 and December 31, 2018 were $186.6 million and $156.8 million , respectively. In addition, collateral is posted by the Corporation with counterparties to secure derivative contracts and other contracts, which are included in "interest-bearing deposits with other banks." The amounts of such collateral as of June 30, 2019 and December 31, 2018 were $173.1 million and $45.1 million , respectively.

Investment Securities

Investment Securities	6 Months Ended
	Jun. 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: Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Estimated Fair Value June 30, 2019 (in thousands) Available for Sale State and municipal securities $ 307,911 $ 8,508 $ (85 ) $ 316,334 Corporate debt securities 194,858 4,885 (2,321 ) 197,422 Collateralized mortgage obligations 889,053 12,190 (2,126 ) 899,117 Residential mortgage-backed securities 331,566 1,623 (3,914 ) 329,275 Commercial mortgage-backed securities 433,027 7,406 (152 ) 440,281 Auction rate securities 107,410 — (4,045 ) 103,365 Total $ 2,263,825 $ 34,612 $ (12,643 ) $ 2,285,794 Held to Maturity State and municipal securities $ 155,861 $ 8,700 $ — $ 164,561 Residential mortgage-backed securities 411,703 13,464 — 425,167 Total $ 567,564 $ 22,164 $ — $ 589,728 Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Estimated Fair Value December 31, 2018 (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 Securities carried at $857.1 million at June 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 June 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 $ 5,828 $ 5,828 $ — $ — Due from one year to five years 38,664 39,900 — — Due from five years to ten years 175,654 178,922 2,154 2,277 Due after ten years 390,033 392,471 153,707 162,284 610,179 617,121 155,861 164,561 Residential mortgage-backed securities (1) 331,566 329,275 411,703 425,167 Commercial mortgage-backed securities (1) 433,027 440,281 — — Collateralized mortgage obligations (1) 889,053 899,117 — — Total $ 2,263,825 $ 2,285,794 $ 567,564 $ 589,728 (1) Maturities for mortgage-backed securities and collateralized mortgage obligations 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 June 30, 2019 (in thousands) Debt securities $ 3,012 $ (2,836 ) $ 176 Total $ 3,012 $ (2,836 ) $ 176 Three months ended June 30, 2018 Debt securities $ 1,530 $ (1,526 ) $ 4 Total $ 1,530 $ (1,526 ) $ 4 Six months ended June 30, 2019 Debt securities $ 3,269 $ (3,028 ) $ 241 Total $ 3,269 $ (3,028 ) $ 241 Six months ended June 30, 2018 Equity securities $ 9 $ — $ 9 Debt securities 1,540 (1,526 ) 14 Total $ 1,549 $ (1,526 ) $ 23 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 June 30, 2019 and 2018: Three months ended June 30 Six months ended June 30 2019 2018 2019 2018 (in thousands) Balance of cumulative credit losses on debt securities, beginning of period $ (11,510 ) $ (11,510 ) $ (11,510 ) $ (11,510 ) Reductions for securities sold during the period 10,520 — 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 June 30, 2019 and December 31, 2018: Less than 12 months 12 months or longer Total June 30, 2019 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 3 $ 15,714 $ (44 ) 4 $ 17,403 $ (41 ) $ 33,117 $ (85 ) Corporate debt securities 3 7,054 (8 ) 14 25,988 (2,313 ) 33,042 (2,321 ) Collateralized mortgage obligations — — — 39 110,517 (2,126 ) 110,517 (2,126 ) Residential mortgage-backed securities — — — 61 285,675 (3,914 ) 285,675 (3,914 ) Commercial mortgage-backed securities 1 11,926 (143 ) 2 17,475 (9 ) 29,401 (152 ) Auction rate securities — — — 177 103,365 (4,045 ) 103,365 (4,045 ) Total 7 $ 34,694 $ (195 ) 297 $ 560,423 $ (12,448 ) $ 595,117 $ (12,643 ) No Held to Maturity investments were in an unrealized loss position at June 30, 2019. Less than 12 months 12 months or longer Total December 31, 2018 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 June 30, 2019 . As of June 30, 2019 , all of the auction rate securities (auction rate certificates, or "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 six months ended June 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 six months ended June 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	6 Months Ended
	Jun. 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: June 30, December 31, 2018 (in thousands) Real-estate - commercial mortgage $ 6,497,973 $ 6,434,285 Commercial - industrial, financial and agricultural 4,365,248 4,404,548 Real estate - residential mortgage 2,451,966 2,251,044 Real estate - home equity 1,386,974 1,452,137 Real estate - construction 922,547 916,599 Consumer 452,874 419,186 Equipment lease financing and other 314,901 311,866 Overdrafts 3,187 2,774 Loans and leases, gross of unearned income 16,395,670 16,192,439 Unearned income (27,212 ) (26,639 ) Loans and leases, net of unearned income $ 16,368,458 $ 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: June 30, December 31, (in thousands) Allowance for loan and lease losses $ 170,233 $ 160,537 Reserve for unfunded lending commitments 6,708 8,873 Allowance for credit losses $ 176,941 $ 169,410 The following table presents the activity in the allowance for credit losses: Three months ended June 30 Six months ended June 30 2019 2018 2019 2018 (in thousands) Balance at beginning of period $ 170,372 $ 176,019 $ 169,410 $ 176,084 Loans and leases charged off (3,711 ) (42,160 ) (10,080 ) (48,557 ) Recoveries of loans and leases previously charged off 5,255 2,271 7,486 4,633 Net loans and leases recovered (charged off) 1,544 (39,889 ) (2,594 ) (43,924 ) Provision for credit losses 5,025 33,117 10,125 37,087 Balance at end of period $ 176,941 $ 169,247 $ 176,941 $ 169,247 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 June 30, 2019 Balance at March 31, 2019 $ 51,946 $ 60,501 $ 19,215 $ 19,146 $ 4,941 $ 3,319 $ 3,041 $ 162,109 Loans and leases charged off (230 ) (1,895 ) (206 ) (134 ) (3 ) (795 ) (448 ) (3,711 ) Recoveries of loans and leases previously charged off 169 2,680 223 211 1,245 579 148 5,255 Net loans and leases (charged off) recovered (61 ) 785 17 77 1,242 (216 ) (300 ) 1,544 Provision for loan and lease losses (1) 2,974 5,055 (251 ) (331 ) (1,255 ) 260 128 6,580 Balance at June 30, 2019 $ 54,859 $ 66,341 $ 18,981 $ 18,892 $ 4,928 $ 3,363 $ 2,869 $ 170,233 Three months ended June 30, 2018 Balance at March 31, 2018 $ 58,717 $ 61,830 $ 17,528 $ 15,261 $ 5,924 $ 1,903 $ 2,054 $ 163,217 Loans and leases charged off (366 ) (38,632 ) (816 ) (483 ) (606 ) (712 ) (545 ) (42,160 ) Recoveries of loans and leases previously charged off 321 541 271 96 444 446 152 2,271 Net loans and leases charged off (45 ) (38,091 ) (545 ) (387 ) (162 ) (266 ) (393 ) (39,889 ) Provision for loan and lease losses (1) (2,089 ) 35,306 (736 ) (370 ) 226 62 323 32,722 Balance at June 30, 2018 $ 56,583 $ 59,045 $ 16,247 $ 14,504 $ 5,988 $ 1,699 $ 1,984 $ 156,050 Six months ended June 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 (1,375 ) (4,682 ) (425 ) (789 ) (98 ) (1,478 ) (1,233 ) (10,080 ) Recoveries of loans and leases previously charged off 305 3,923 420 343 1,329 789 377 7,486 Net loans and leases (charged off) recovered (1,070 ) (759 ) (5 ) (446 ) 1,231 (689 ) (856 ) (2,594 ) Provision for loan losses (1) 3,040 8,232 75 417 (1,364 ) 835 1,055 12,290 Balance at June 30, 2019 $ 54,859 $ 66,341 $ 18,981 $ 18,892 $ 4,928 $ 3,363 $ 2,869 $ 170,233 Six months ended June 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 (633 ) (42,637 ) (1,224 ) (645 ) (764 ) (1,604 ) (1,050 ) (48,557 ) Recoveries of loans and leases previously charged off 600 1,616 477 203 750 625 362 4,633 Net loans and leases charged off (33 ) (41,021 ) (747 ) (442 ) (14 ) (979 ) (688 ) (43,924 ) Provision for loan losses (1) (2,177 ) 33,786 (1,133 ) (1,142 ) (618 ) 633 715 30,064 Balance at June 30, 2018 $ 56,583 $ 59,045 $ 16,247 $ 14,504 $ 5,988 $ 1,699 $ 1,984 $ 156,050 (1) The provision for loan and lease losses excluded a $1.6 million and a $2.2 million decrease in the reserve for unfunded lending commitments for the three and six months ended June 30, 2019 , respectively, and a $395,000 and a $7.0 million increase in the reserve for unfunded lending commitments for the three and six months ended June 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 June 30, 2019: Collectively evaluated for impairment $ 45,367 $ 53,985 $ 8,463 $ 9,913 $ 4,399 $ 3,356 $ 2,869 $ 128,352 Individually evaluated for impairment 9,492 12,356 10,518 8,979 529 7 — 41,881 $ 54,859 $ 66,341 $ 18,981 $ 18,892 $ 4,928 $ 3,363 $ 2,869 $ 170,233 Loans and leases, net of unearned income at June 30, 2019: Collectively evaluated for impairment $ 6,438,080 $ 4,313,666 $ 1,363,392 $ 2,414,627 $ 918,380 $ 452,865 $ 273,118 $ 16,174,128 Individually evaluated for impairment 59,893 51,582 23,582 37,339 4,167 9 17,758 194,330 $ 6,497,973 $ 4,365,248 $ 1,386,974 $ 2,451,966 $ 922,547 $ 452,874 $ 290,876 $ 16,368,458 Allowance for loan and lease losses at June 30, 2018: Collectively evaluated for impairment $ 48,489 $ 49,354 $ 5,093 $ 5,171 $ 5,338 $ 1,691 $ 1,984 $ 117,120 Individually evaluated for impairment 8,094 9,691 11,154 9,333 650 8 — 38,930 $ 56,583 $ 59,045 $ 16,247 $ 14,504 $ 5,988 $ 1,699 $ 1,984 $ 156,050 Loans and leases, net of unearned income at June 30, 2018: Collectively evaluated for impairment $ 6,252,747 $ 4,209,786 $ 1,466,393 $ 2,055,206 $ 981,584 $ 360,304 $ 286,947 $ 15,612,967 Individually evaluated for impairment 51,728 54,816 25,002 39,324 9,121 11 — 180,002 $ 6,304,475 $ 4,264,602 $ 1,491,395 $ 2,094,530 $ 990,705 $ 360,315 $ 286,947 $ 15,792,969 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 June 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 impaired commercial mortgages and construction loans, or business assets, such as accounts receivable or inventory, in the case of commercial and industrial loans. Commercial and industrial loans may also be secured by real estate. As of June 30, 2019 and December 31, 2018 , approximately 84% 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, in the opinion of the Corporation's internal credit administration staff, there has not been a significant deterioration in the collateral value since the original appraisal was performed. Original appraisals are typically used only when the estimated collateral value, as adjusted for the age of the appraisal, results in a current loan-to-value ratio that is lower than the Corporation's loan-to-value requirements for new loans, generally less than 70% . The following table presents total impaired loans and leases by class segment: June 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 $ 32,406 $ 30,574 $ — $ 25,095 $ 23,481 $ — Commercial 29,696 23,588 — 33,493 26,585 — Real estate - residential mortgage 4,565 4,400 — 3,149 3,149 — Construction 6,454 2,604 — 8,980 5,083 — Equipment lease financing 17,758 17,758 — 19,269 19,268 — 90,879 78,924 — 89,986 77,566 — With a related allowance recorded: Real estate - commercial mortgage 40,435 29,319 9,492 29,005 22,592 7,255 Commercial 38,010 27,994 12,356 37,706 28,708 12,513 Real estate - residential mortgage 37,202 32,939 8,979 39,972 35,621 9,394 Real estate - home equity 26,712 23,582 10,518 26,599 23,373 10,370 Construction 5,112 1,563 529 5,984 2,307 793 Consumer 9 9 7 11 11 7 147,480 115,406 41,881 139,277 112,612 40,332 Total $ 238,359 $ 194,330 $ 41,881 $ 229,263 $ 190,178 $ 40,332 As of June 30, 2019 and December 31, 2018 , there were $78.9 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 June 30 Six months ended June 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 $ 27,738 $ 100 $ 27,127 $ 97 $ 26,319 $ 197 $ 25,713 $ 180 Commercial 25,238 32 33,644 69 25,686 62 35,612 142 Real estate - residential mortgage 3,764 23 3,870 24 3,559 43 4,105 51 Construction 3,814 — 7,528 — 4,237 — 7,718 — Equipment lease financing, other and overdrafts 18,136 — — — 18,513 — — 78,690 155 72,169 190 78,314 302 73,148 373 With a related allowance recorded: Real estate - commercial mortgage 24,528 87 25,419 91 23,883 172 25,578 175 Commercial 28,485 36 26,120 54 28,558 69 25,471 97 Real estate - home equity 23,706 222 24,907 195 23,595 445 24,835 379 Real estate - residential mortgage 34,695 215 36,261 223 35,004 440 36,551 444 Construction 1,595 — 2,400 — 1,832 — 2,966 — Consumer 10 — 18 — 10 — 20 — 113,019 560 115,125 563 112,882 1,126 115,421 1,095 Total $ 191,709 $ 715 $ 187,294 $ 753 $ 191,196 $ 1,428 $ 188,569 $ 1,468 (1) All impaired loans, excluding accruing TDRs, were non-accrual loans. Interest income recognized for the three and six months ended June 30, 2019 and 2018 represents amounts earned on accruing TDRs. Credit Quality Indicators and Non-performing Assets The following is a summary of the Corporation's internal risk rating categories: • Pass : These loans do not currently pose undue credit risk and can range from the highest to average quality, depending on the degree of potential risk. • Special Mention : These loans 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 June 30, 2019 December 31, 2018 June 30, 2019 December 31, 2018 June 30, 2019 December 31, 2018 June 30, 2019 December 31, 2018 (dollars in thousands) Real estate - commercial mortgage $ 6,173,883 $ 6,129,463 $ 162,425 $ 170,827 $ 161,665 $ 133,995 $ 6,497,973 $ 6,434,285 Commercial - secured 3,835,171 3,902,484 182,569 193,470 171,856 129,026 4,189,596 4,224,980 Commercial - unsecured 168,311 171,589 4,972 4,016 2,369 3,963 175,652 179,568 Total commercial - industrial, financial and agricultural 4,003,482 4,074,073 187,541 197,486 174,225 132,989 4,365,248 4,404,548 Construction - commercial residential 109,168 104,079 3,082 6,912 3,959 6,881 116,209 117,872 Construction - commercial 725,556 723,030 731 1,163 3,197 2,533 729,484 726,726 Total construction (excluding Construction - other) 834,724 827,109 3,813 8,075 7,156 9,414 845,693 844,598 $ 11,012,089 $ 11,030,645 $ 353,779 $ 376,388 $ 343,046 $ 276,398 $ 11,708,914 $ 11,683,431 % of Total 94.1 % 94.4 % 3.0 % 3.2 % 2.9 % 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 leases. 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 June 30, 2019 December 31, 2018 June 30, 2019 December 31, 2018 June 30, 2019 December 31, 2018 June 30, 2019 December 31, 2018 (dollars in thousands) Real estate - home equity $ 1,363,344 $ 1,431,666 $ 11,634 $ 10,702 $ 11,996 $ 9,769 $ 1,386,974 $ 1,452,137 Real estate - residential mortgage 2,398,432 2,202,955 31,876 28,988 21,658 19,101 2,451,966 2,251,044 Construction - other 76,116 71,511 549 — 189 490 76,854 72,001 Consumer - direct 58,295 55,629 295 338 123 66 58,713 56,033 Consumer - indirect 390,394 359,405 3,508 3,405 259 343 394,161 363,153 Total consumer 448,689 415,034 3,803 3,743 382 409 452,874 419,186 Equipment lease financing, other and overdrafts 271,130 267,112 1,808 1,302 17,938 19,587 290,876 288,001 $ 4,557,711 $ 4,388,278 $ 49,670 $ 44,735 $ 52,163 $ 49,356 $ 4,659,544 $ 4,482,369 % of Total 97.8 % 97.9 % 1.1 % 1.0 % 1.1 % 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: June 30, December 31, (in thousands) Non-accrual loans and leases $ 133,118 $ 128,572 Loans and leases 90 days or more past due and still accruing 14,598 11,106 Total non-performing loans and leases 147,716 139,678 Other real estate owned (OREO) 7,241 10,518 Total non-performing assets $ 154,957 $ 150,196 The following tables present past due status and non-accrual loans and leases by portfolio segment and class segment: June 30, 2019 30-59 Days Past Due 60-89 Days Past Due ≥ 90 Days Past Due and Accruing Non- accrual Total ≥ 90 Days Total Past Due Current Total (in thousands) Real estate - commercial mortgage $ 16,620 $ 2,059 $ 637 $ 43,213 $ 43,850 $ 62,529 $ 6,435,444 $ 6,497,973 Commercial - secured 8,480 1,923 1,422 45,114 46,536 56,939 4,132,657 4,189,596 Commercial - unsecured 592 136 — 723 723 1,451 174,201 175,652 Total commercial - industrial, financial and agricultural 9,072 2,059 1,422 45,837 47,259 58,390 4,306,858 4,365,248 Real estate - home equity 9,370 2,264 4,803 7,193 11,996 23,630 1,363,344 1,386,974 Real estate - residential mortgage 26,135 5,741 6,708 14,950 21,658 53,534 2,398,432 2,451,966 Construction - commercial residential — — — 3,959 3,959 3,959 112,250 116,209 Construction - commercial 895 — 466 19 485 1,380 728,104 729,484 Construction - other 549 — — 189 189 738 76,116 76,854 Total real estate - construction 1,444 — 466 4,167 4,633 6,077 916,470 922,547 Consumer - direct 205 90 123 — 123 418 58,295 58,713 Consumer - indirect 2,901 607 259 — 259 3,767 390,394 394,161 Total consumer 3,106 697 382 — 382 4,185 448,689 452,874 Equipment lease financing, other and overdrafts 1,365 443 180 17,758 17,938 19,746 271,130 290,876 Total $ 67,112 $ 13,263 $ 14,598 $ 133,118 $ 147,716 $ 228,091 $ 16,140,367 $ 16,368,458 December 31, 2018 30-59 Days Past Due 60-89 Days Past Due ≥ 90 Days Past Due and Accruing Non- accrual Total ≥ 90 Days Total Past Due Current Total (in thousands) Real estate - commercial mortgage $ 12,206 $ 1,500 $ 1,765 $ 30,388 $ 32,153 $ 45,859 $ 6,388,426 $ 6,434,285 Commercial - secured 5,227 938 1,068 49,299 50,367 56,532 4,168,448 4,224,980 Commercial - unsecured 1,598 — 51 851 902 2,500 177,068 179,568 Total commercial - industrial, financial and agricultural 6,825 938 1,119 50,150 51,269 59,032 4,345,516 4,404,548 Real estate - home equity 7,144 3,558 3,061 6,708 9,769 20,471 1,431,666 1,452,137 Real estate - residential mortgage 20,796 8,192 4,433 14,668 19,101 48,089 2,202,955 2,251,044 Construction - commercial residential 2,489 — — 6,881 6,881 9,370 108,502 117,872 Construction - commercial — — — 19 19 19 726,707 726,726 Construction - other — — — 490 490 490 71,511 72,001 Total real estate - construction 2,489 — — 7,390 7,390 9,879 906,720 916,599 Consumer - direct 267 71 66 — 66 404 55,629 56,033 Consumer - indirect 2,908 497 343 — 343 3,748 359,405 363,153 Total consumer 3,175 568 409 — 409 4,152 415,034 419,186 Equipment lease financing, other and overdrafts 1,005 297 319 19,268 19,587 20,889 267,112 288,001 Total $ 53,640 $ 15,053 $ 11,106 $ 128,572 $ 139,678 $ 208,371 $ 15,957,429 $ 16,165,800 The following table presents TDRs, by class segment: June 30, December 31, (in thousands) Real-estate - residential mortgage $ 22,389 $ 24,102 Real estate - home equity 16,389 16,665 Real-estate - commercial mortgage 16,680 15,685 Commercial 5,744 5,143 Consumer 9 10 Total accruing TDRs 61,211 61,605 Non-accrual TDRs (1) 29,958 28,659 Total TDRs $ 91,169 $ 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 six months ended June 30, 2019 and 2018: Three months ended June 30 Six months ended June 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) Commercial 6 $ 2,371 2 $ 53 10 $ 4,831 11 $ 9,412 Real estate - residential mortgage 1 516 1 77 5 1,433 2 82 Real estate - home equity 22 1,125 28 1,659 34 1,954 47 3,043 Total 29 $ 4,012 31 $ 1,789 49 $ 8,218 60 $ 12,537 Restructured loan modifications may include payment schedule modifications, interest rate concessions, bankruptcies, principal reduction, or some combination of these concessions. During the three and six months ended June 30, 2019, restructured loan modifications of residential mortgages, home equity loans and commercial mortgage loans primarily included maturity date extensions, rate modifications and payment schedule modifications. The following table presents TDRs, by class segment, as of June 30, 2019 and 2018 that were modified in the previous 12 months and had a post-modification payment default during the six months ended June 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 2 $ 299 8 $ 863 Real estate - commercial mortgage — — 1 176 Real estate - home equity 16 890 29 1,955 Commercial 4 2,302 5 146 Total 22 $ 3,491 43 $ 3,140

Mortgage Servicing Rights

Mortgage Servicing Rights	6 Months Ended
	Jun. 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 June 30 Six months ended June 30 2019 2018 2019 2018 (in thousands) Amortized cost: Balance at beginning of period $ 38,504 $ 37,748 $ 38,573 $ 37,663 Originations of mortgage servicing rights 1,861 1,746 3,086 3,229 Amortization (1,539 ) (1,600 ) (2,833 ) (2,998 ) Balance at end of period $ 38,826 $ 37,894 $ 38,826 $ 37,894 MSRs represent the economic value of existing contractual rights to service mortgage loans that have been sold. Accordingly, actual and expected prepayments of the underlying mortgage loans can impact the value of MSRs. The Corporation accounts for MSRs at the lower of amortized cost or fair value. The fair value of MSRs is estimated by discounting the estimated cash flows from servicing income, net of expense, over the expected life of the underlying loans at a discount rate commensurate with the risk associated with these assets. Expected life is based on the contractual terms of the loans, as adjusted for prepayment projections. The fair values of MSRs were $44.9 million and $50.2 million

Leases

Leases	6 Months Ended
	Jun. 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 new guidance (Topic 842), 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 the 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 primarily 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. In addition, the Corporation rents or subleases certain real estate to third parties. The rental and sublease portfolio consists mostly of operating leases for space within the Corporation's offices and branches. The following table presents the components of the Corporation’s lease costs for operating leases as the lessee, which is included in net occupancy expense on the consolidated statements of income (in thousands): Three months ended Six months ended June 30, 2019 June 30, 2019 Operating lease expense $ 4,796 $ 9,486 Variable lease expense 761 1,370 Sublease income (168 ) (371 ) Total lease expense $ 5,389 $ 10,485 Supplemental balance sheet information related to leases was as follows (in thousands, except for weighted-averages): Operating Leases Classification June 30, 2019 ROU assets Other assets $ 104,046 Lease liabilities Other liabilities $ 110,987 Weighted-average remaining lease term 8.4 years Weighted-average discount rate 3.06 % 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): Six months ended June 30, 2019 Cash paid for amounts included in the measurement of lease liabilities $ 9,269 ROU assets obtained in exchange for lease obligations $ 111,995 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 six months ending December 31, 2019 $ 9,390 2020 18,607 2021 17,400 2022 16,052 2023 13,804 Thereafter 52,664 Total lease payments 127,917 Less: imputed interest (16,930 ) Present value of lease liabilities $ 110,987 As of June 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 new guidance (Topic 842), 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 the 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 primarily 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. In addition, the Corporation rents or subleases certain real estate to third parties. The rental and sublease portfolio consists mostly of operating leases for space within the Corporation's offices and branches. The following table presents the components of the Corporation’s lease costs for operating leases as the lessee, which is included in net occupancy expense on the consolidated statements of income (in thousands): Three months ended Six months ended June 30, 2019 June 30, 2019 Operating lease expense $ 4,796 $ 9,486 Variable lease expense 761 1,370 Sublease income (168 ) (371 ) Total lease expense $ 5,389 $ 10,485 Supplemental balance sheet information related to leases was as follows (in thousands, except for weighted-averages): Operating Leases Classification June 30, 2019 ROU assets Other assets $ 104,046 Lease liabilities Other liabilities $ 110,987 Weighted-average remaining lease term 8.4 years Weighted-average discount rate 3.06 % 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): Six months ended June 30, 2019 Cash paid for amounts included in the measurement of lease liabilities $ 9,269 ROU assets obtained in exchange for lease obligations $ 111,995 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 six months ending December 31, 2019 $ 9,390 2020 18,607 2021 17,400 2022 16,052 2023 13,804 Thereafter 52,664 Total lease payments 127,917 Less: imputed interest (16,930 ) Present value of lease liabilities $ 110,987 As of June 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	6 Months Ended
	Jun. 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. Mortgage Banking Derivatives In connection with its mortgage banking activities, the Corporation enters into commitments to originate certain fixed-rate residential mortgage loans for customers, also referred to as interest rate locks. In addition, the Corporation enters into forward commitments for the future sales or purchases of mortgage-backed securities to or from third-party counterparties to hedge the effect of changes in interest rates on the values of both the interest rate locks and mortgage loans held for sale. Forward sales commitments may also be in the form of commitments to sell individual mortgage loans at a fixed price at a future date. The amount necessary to settle each interest rate lock is based on the price that secondary market investors would pay for loans with similar characteristics, including interest rate and term, as of the date fair value is measured. Gross derivative assets and liabilities are recorded in other assets and other liabilities, respectively, on the consolidated balance sheets, and changes in fair values during the period are recorded in mortgage banking income on the consolidated statements of income. Interest Rate Swaps The Corporation enters into interest rate swaps with certain qualifying commercial loan customers to meet their interest rate risk management needs. The Corporation simultaneously enters into interest rate swaps with dealer counterparties, with identical notional amounts and terms. The net result of these interest rate swaps is that the customer pays a fixed rate of interest and the Corporation receives a floating rate. These interest rate swaps are derivative financial instruments and the gross fair values are recorded in other assets and other liabilities on the consolidated balance sheets, with changes in fair values during the period recorded in other non-interest expense on the consolidated statements of income. Fulton Bank, N.A. ("Fulton Bank"), the Corporation's largest banking subsidiary, exceeds $10 billion in total assets and is required to clear all eligible interest rate swap contracts with a central counterparty. As a result, Fulton 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 . Gross fair values are recorded in other assets and other liabilities on the consolidated balance sheets, with changes in fair values during the period recorded in other income on the consolidated statements of income. The following table presents a summary of the notional amounts and fair values of derivative financial instruments: June 30, 2019 December 31, 2018 Notional Asset Notional Asset (in thousands) Interest Rate Locks with Customers Positive fair values $ 184,657 $ 2,118 $ 101,700 $ 1,148 Negative fair values 3,090 (21 ) 1,646 (12 ) Net interest rate locks with customers 2,097 1,136 Forward Commitments Positive fair values 40,334 221 1,540 3 Negative fair values 111,530 (1,631 ) 83,562 (1,066 ) Net forward commitments (1,410 ) (1,063 ) Interest Rate Swaps with Customers Positive fair values 2,514,261 136,298 1,185,144 33,258 Negative fair values 292,200 (1,716 ) 1,386,046 (30,769 ) Net interest rate swaps with customers 134,582 2,489 Interest Rate Swaps with Dealer Counterparties Positive fair values (1) 292,200 1,716 1,386,046 28,143 Negative fair values (1) 2,514,261 (74,516 ) 1,185,144 (16,338 ) Net interest rate swaps with dealer counterparties (72,800 ) 11,805 Foreign Exchange Contracts with Customers Positive fair values 6,423 105 5,881 105 Negative fair values 6,643 (186 ) 9,690 (251 ) Net foreign exchange contracts with customers (81 ) (146 ) Foreign Exchange Contracts with Correspondent Banks Positive fair values 8,750 226 9,220 287 Negative fair values 6,590 (100 ) 6,831 (130 ) Net foreign exchange contracts with correspondent banks 126 157 Net derivative fair value asset $ 62,514 $ 14,378 (1) The variation margin posted as collateral on centrally cleared interest rate swaps, which represents the fair value of such swaps, is legally characterized as a settlement of the outstanding derivative contracts instead of cash collateral. Accordingly, the fair values of centrally cleared interest rate swaps were offset by variation margins totaling $61.8 million and $14.3 million at June 30, 2019 and December 31, 2018 , respectively. The following table presents a summary of the fair value gains (losses) on derivative financial instruments: Three months ended June 30 Six months ended June 30 2019 2018 2019 2018 (in thousands) Interest rate locks with customers $ 355 $ 231 $ 961 $ 360 Forward commitments (403 ) (541 ) (347 ) (315 ) Interest rate swaps with customers 81,576 (12,375 ) 132,093 (55,017 ) Interest rate swaps with dealer counterparties (1) (50,673 ) 10,811 (84,605 ) 44,625 Foreign exchange contracts with customers (154 ) (23 ) 65 (16 ) Foreign exchange contracts with correspondent banks 140 (50 ) (31 ) 38 Net fair value gains (losses) on derivative financial instruments $ 30,841 $ (1,947 ) $ 48,136 $ (10,325 ) (1) Not included are $31.2 million and $47.5 million , respectively, of losses related to the variation margin settlements for the three and six months ended June 30, 2019 and $1.6 million and $10.4 million of gains related to the variation margin settlements for the three and six months ended June 30, 2018 , respectively. 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: June 30, December 31, (in thousands) Cost (1) $ 44,737 $ 26,407 Fair value 45,754 27,099 (1) Cost basis of mortgage loans held for sale represents the unpaid principal balance. For the three months ended June 30, 2019 and 2018, gains related to changes in fair values of mortgage loans held for sale were $304,000 and $324,000 , respectively. During the six months ended June 30, 2019 and 2018, gains related to changes in fair values of mortgage loans held for sale were $325,000 and $127,000 , 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 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) June 30, 2019 Interest rate swap derivative assets $ 138,275 $ (1,941 ) $ — $ 136,334 Foreign exchange derivative assets with correspondent banks 219 (93 ) — 126 Total $ 138,494 $ (2,034 ) $ — $ 136,460 Interest rate swap derivative liabilities $ 76,232 $ (1,941 ) $ (74,291 ) $ — Foreign exchange derivative liabilities with correspondent banks 93 (93 ) — — Total $ 76,325 $ (2,034 ) $ (74,291 ) $ — 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	6 Months Ended
	Jun. 30, 2019
Income Tax Disclosure [Abstract]
Tax Credit Investments	Tax Credit Investments The Corporation's tax credit investments ("TCIs") are primarily related to investments promoting qualified affordable housing projects and investments in community development entities. The majority of these tax-advantaged investments support the Corporation's corporate mission and vision, as well as regulatory compliance with the Community Reinvestment Act. The Corporation's 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 carried 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. As illustrated below, realizable tax credits are included within income taxes and offset the amortization expense recorded. The following table presents the balances of the Corporation's TCIs and related unfunded commitments: June 30, December 31, 2019 2018 Included in other assets: (in thousands) Affordable housing tax credit investment, net $ 161,986 $ 170,401 Other tax credit investments, net 72,786 72,584 Total TCIs, net $ 234,772 $ 242,985 Included in other liabilities: Unfunded affordable housing tax credit commitments $ 18,542 $ 23,196 Other tax credit investment liabilities 61,483 59,823 Total unfunded tax credit investment commitments and liabilities $ 80,025 $ 83,019 The following table presents other information relating to the Corporation's TCIs: Three Months Ended Six Months Ended June 30 June 30 2019 2018 2019 2018 Components of income taxes: (in thousands) Affordable housing tax credits and other tax benefits $ (7,575 ) $ (7,543 ) $ (15,150 ) $ (15,087 ) Other tax credit investment credits and tax benefits (1,135 ) (1,597 ) (2,271 ) (3,193 ) Amortization of affordable housing investments, net of tax benefit 5,494 5,319 10,989 10,917 Deferred tax expense 239 336 477 671 Total reduction in income tax expense $ (2,977 ) $ (3,485 ) $ (5,955 ) $ (6,692 ) Amortization of TCIs: Affordable housing tax credits investment $ 823 $ 839 $ 1,645 $ 1,678 Other tax credit investment amortization 669 798 1,338 1,596 Total amortization of TCIs $ 1,492 $ 1,637 $ 2,983 $ 3,274

Accumulated Other Comprehensive

Accumulated Other Comprehensive Income	6 Months Ended
	Jun. 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 June 30, 2019 Unrealized gain on securities $ 31,994 $ (7,077 ) $ 24,917 Reclassification adjustment for securities gains included in net income (1) (176 ) 39 (137 ) Amortization of net unrealized losses on available for sale ("AFS") securities transferred to held to maturity ("HTM") (2) 1,311 (290 ) 1,021 Non-credit related unrealized losses on other-than-temporarily impaired debt securities (770 ) 170 (600 ) Amortization of net unrecognized pension and postretirement items (3) 353 (78 ) 275 Total Other Comprehensive Income $ 32,712 $ (7,236 ) $ 25,476 Three months ended June 30, 2018 Unrealized loss on securities $ (8,397 ) $ 1,766 $ (6,631 ) Reclassification adjustment for securities gains included in net income (1) (4 ) 1 (3 ) Non-credit related unrealized gains on other-than-temporarily impaired debt securities 9 (1 ) 8 Amortization of net unrecognized pension and postretirement items (3) 683 (143 ) 540 Total Other Comprehensive Loss $ (7,709 ) $ 1,623 $ (6,086 ) Six months ended June 30, 2019 Unrealized gain on securities $ 58,056 $ (12,841 ) $ 45,215 Reclassification adjustment for securities gains included in net income (1) (241 ) 53 (188 ) Amortization of net unrealized losses on AFS securities transferred to HTM (2) 2,563 (568 ) 1,995 Non-credit related unrealized losses on other-than-temporarily impaired debt securities (875 ) 193 (682 ) Amortization of net unrecognized pension and postretirement items (3) 727 (161 ) 566 Total Other Comprehensive Income $ 60,230 $ (13,324 ) $ 46,906 Six months ended June 30, 2018 Unrealized loss on securities $ (43,388 ) $ 9,113 $ (34,275 ) Reclassification adjustment for securities gains included in net income (1) (23 ) 4 (19 ) Non-credit related unrealized gains on other-than-temporarily impaired debt securities 294 (62 ) 232 Amortization of net unrecognized pension and postretirement items (3) 1,113 (234 ) 879 Total Other Comprehensive Loss $ (42,004 ) $ 8,821 $ (33,183 ) (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) 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 June 30, 2019 Balance at March 31, 2019 $ (23,433 ) $ 598 $ (14,798 ) $ (37,633 ) Other comprehensive income before reclassifications 24,917 (600 ) — 24,317 Amounts reclassified from accumulated other comprehensive income (loss) (137 ) — 275 138 Amortization of net unrealized losses on AFS securities transferred to HTM 1,021 — — — 1,021 Balance at June 30, 2019 $ 2,368 $ (2 ) $ (14,523 ) $ (12,157 ) Three months ended June 30, 2018 Balance at March 31, 2018 $ (50,056 ) $ 682 $ (17,798 ) $ (67,172 ) Other comprehensive loss before reclassifications (6,631 ) 8 — (6,623 ) Amounts reclassified from accumulated other comprehensive income (loss) (3 ) — 540 537 Balance at June 30, 2018 $ (56,690 ) $ 690 $ (17,258 ) $ (73,258 ) Six months ended June 30, 2019 Balance at December 31, 2018 $ (44,654 ) $ 680 $ (15,089 ) $ (59,063 ) Other comprehensive income before reclassifications 45,215 (682 ) — 44,533 Amounts reclassified from accumulated other comprehensive income (loss) (188 ) — 566 378 Amortization of net unrealized losses on AFS securities transferred to HTM 1,995 — — 1,995 Balance at June 30, 2019 $ 2,368 $ (2 ) $ (14,523 ) $ (12,157 ) Six months ended June 30, 2018 Balance at December 31, 2017 $ (18,509 ) $ 458 $ (14,923 ) $ (32,974 ) Other comprehensive loss before reclassifications (34,275 ) 232 — (34,043 ) Amounts reclassified from accumulated other comprehensive income (loss) (19 ) — 879 860 Reclassification of stranded tax effects (3,887 ) — (3,214 ) (7,101 ) Balance at June 30, 2018 $ (56,690 ) $ 690 $ (17,258 ) $ (73,258 )

Fair Value Measurements

Fair Value Measurements	6 Months Ended
	Jun. 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: June 30, 2019 Level 1 Level 2 Level 3 Total (in thousands) Loans held for sale $ — $ 45,754 $ — $ 45,754 Available for sale investment securities: State and municipal securities — 316,334 — 316,334 Corporate debt securities — 195,052 2,370 197,422 Collateralized mortgage obligations — 899,117 — 899,117 Residential mortgage-backed securities — 329,275 — 329,275 Commercial mortgage-backed securities — 440,281 — 440,281 Auction rate securities — — 103,365 103,365 Total available for sale investment securities — 2,180,059 105,735 2,285,794 Other assets: Investments held in Rabbi Trust 20,811 — — 20,811 Derivative assets 541 140,353 — 140,894 Total assets $ 21,352 $ 2,366,166 $ 105,735 $ 2,493,253 Other liabilities: Deferred compensation liabilities 20,811 — — 20,811 Derivative liabilities 475 77,883 — 78,358 Total liabilities $ 21,286 $ 77,883 $ — $ 99,169 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 consists of mortgage loans held for sale that the Corporation has elected to measure at fair value. Fair values as of June 30, 2019 and December 31, 2018 were measured 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 ( $175.2 million at June 30, 2019 and $86.1 million at December 31, 2018 ), single-issuer trust preferred securities issued by financial institutions ( $18.3 million at June 30, 2019 and $18.6 million at December 31, 2018 ), pooled trust preferred securities issued by financial institutions ( $0 at June 30, 2019 and $875,000 at December 31, 2018 ) and other corporate debt issued by non-financial institutions ( $3.9 million at June 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 $16.0 million and $16.3 million of single-issuer trust preferred securities held at June 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 June 30, 2019 and $875,000 at December 31, 2018 ) and certain single-issuer trust preferred securities ( $2.4 million at June 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 and are included in other assets on the consolidated balance sheets ( $20.8 million at June 30, 2019 and $18.4 million at December 31, 2018 ). • Derivative assets – Fair value of foreign currency exchange contracts classified as Level 1 assets ( $331,000 at June 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 ( $2.3 million at June 30, 2019 and $1.2 million at December 31, 2018 ) and the fair value of interest rate swaps ( $138.0 million at June 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 ( $20.8 million at June 30, 2019 and $18.4 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 "Investments held in Rabbi Trust" above. • Derivative liabilities – Level 1 liabilities, representing the fair value of foreign currency exchange contracts ( $286,000 at June 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 ( $1.7 million at June 30, 2019 and $1.1 million December 31, 2018 ) and the fair value of interest rate swaps ( $76.2 million at June 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 June 30, 2019 (in thousands) Balance at March 31, 2019 $ 770 $ 2,430 $ 102,810 Sales (770 ) — — Unrealized adjustment to fair value (1) — (60 ) 555 Balance at June 30, 2019 $ — $ 2,370 $ 103,365 Three months ended June 30, 2018 Balance at March 31, 2018 $ 865 $ 3,095 $ 103,049 Unrealized adjustment to fair value (1) 10 102 73 Discount accretion (2) — 3 — Balance at June 30, 2018 $ 875 $ 3,200 $ 103,122 Six months ended June 30, 2019 Balance at December 31, 2018 $ 875 $ 2,400 $ 102,994 Sales (770 ) — — Unrealized adjustment to fair value (1) (105 ) (30 ) 371 Balance at June 30, 2019 $ — $ 2,370 $ 103,365 Six months ended June 30, 2018 Balance at December 31, 2017 $ 707 $ 3,050 $ 98,668 Unrealized adjustment to fair value (1) 168 144 4,454 Discount accretion (2) — 6 — Balance at June 30, 2018 $ 875 $ 3,200 $ 103,122 (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 the Corporation’s Level 3 financial assets measured at fair value on a nonrecurring basis and reported on the Corporation’s consolidated balance sheets: June 30, 2019 December 31, 2018 (in thousands) Net loans and leases $ 152,451 $ 149,846 OREO 7,241 10,518 MSRs 44,916 50,204 Total assets $ 204,608 $ 210,568 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 evaluated for impairment under FASB ASC Section 310-10-35 and have been classified as Level 3 assets. The amount shown is the balance of impaired loans, net of the related allowance for loan losses. See "Note 4 - Loans and Allowance for Credit Losses," for additional details. • 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 June 30, 2019 valuation were 10.2% and 9.5% , 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 June 30, 2019 and December 31, 2018 . A general description of the methods and assumptions used to estimate such fair values follows: June 30, 2019 Estimated Fair Value Carrying Amount Level 1 Level 2 Level 3 Total (in thousands) FINANCIAL ASSETS Cash and cash equivalents $ 498,811 $ 498,811 $ — $ — $ 498,811 FRB and FHLB stock 97,248 — 97,248 — 97,248 Loans held for sale 45,754 — 45,754 — 45,754 Available for sale investment securities 2,285,794 — 2,180,059 105,735 2,285,794 Held to maturity investment securities 567,564 589,728 — — 589,728 Net Loans and Leases 16,198,225 — — 16,019,233 16,019,233 Accrued interest receivable 62,984 62,984 — — 62,984 Other financial assets 318,776 132,356 140,353 46,067 318,776 FINANCIAL LIABILITIES Demand and savings deposits $ 13,249,017 $ 13,249,017 $ — $ — $ 13,249,017 Brokered deposits 246,116 206,116 40,292 — 246,408 Time deposits 2,893,762 — 2,894,290 — 2,894,290 Short-term borrowings 1,188,390 1,188,390 — — 1,188,390 Accrued interest payable 9,218 9,218 — — 9,218 Other financial liabilities 249,381 164,790 77,883 6,708 249,381 FHLB advances and long-term debt 987,416 — 986,336 — 986,336 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 financial 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 Other financial liabilities 218,061 161,003 48,185 8,873 218,061 FHLB advances and long-term debt 992,279 — 970,985 — 970,985 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 June 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	6 Months Ended
	Jun. 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 June 30 Six months ended June 30 2019 2018 2019 2018 Weighted average shares outstanding (basic) 168,343 175,764 169,109 175,535 Impact of common stock equivalents 825 1,080 933 1,171 Weighted average shares outstanding (diluted) 169,168 176,844 170,042 176,706 Per share: Basic $ 0.36 $ 0.20 $ 0.69 $ 0.48 Diluted 0.35 0.20 0.68 0.48

Stock-Based Compensation

Stock-Based Compensation	6 Months Ended
	Jun. 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 semi-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 June 30, 2019 , the Employee Equity Plan had 10.1 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 June 30 Six months ended June 30 2019 2018 2019 2018 (in thousands) Compensation expense $ 1,788 $ 2,674 $ 3,348 $ 4,184 Tax benefit (412 ) (1,075 ) (743 ) (1,536 ) Stock-based compensation expense, net of tax benefit $ 1,376 $ 1,599 $ 2,605 $ 2,648

Employee Benefit Plans

Employee Benefit Plans	6 Months Ended
	Jun. 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 June 30 Six months ended June 30 2019 2018 2019 2018 (in thousands) Interest cost $ 815 $ 696 $ 1,630 $ 1,527 Expected return on plan assets (689 ) (573 ) (1,378 ) (1,024 ) Net amortization and deferral 495 551 990 1,215 Net periodic pension cost $ 621 $ 674 $ 1,242 $ 1,718 The components of the net benefit for the Corporation’s Postretirement Benefits Plan ("Postretirement Plan") consisted of the following components: Three months ended June 30 Six months ended June 30 2019 2018 2019 2018 (in thousands) Interest cost $ 15 $ 12 $ 30 $ 29 Net accretion and deferral (139 ) (139 ) (278 ) (280 ) Net periodic benefit $ (124 ) $ (127 ) $ (248 ) $ (251 )

Commitments and Contingencies

Commitments and Contingencies	6 Months Ended
	Jun. 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: June 30, December 31, 2018 (in thousands) Commitments to extend credit $ 6,688,574 $ 6,306,583 Standby letters of credit 300,262 309,352 Commercial letters of credit 47,368 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. Residential Lending 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 June 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. BSA/AML Consent Order As of April 1, 2019, the Corporation and its bank subsidiary, Lafayette Ambassador Bank, were subject to a Cease and Desist Order Issued Upon Consent ("Consent Order") issued on September 4, 2014 by the Board of Governors of the Federal Reserve System (the "Board of Governors") relating to identified deficiencies in the Corporation’s centralized Bank Secrecy Act and anti-money laundering compliance program. As previously disclosed in a Current Report on Form 8-K filed with the SEC on May 23, 2019, the Board of Governors has terminated the Consent Order. Fair Lending Investigation During the second quarter of 2015, Fulton Bank, N.A., the Corporation’s largest bank subsidiary, received a letter from the U.S. Department of Justice (the "Department") indicating that the Department had initiated an investigation regarding potential violations of fair lending laws (specifically, the Equal Credit Opportunity Act and the Fair Housing Act) by Fulton Bank, N.A. in certain geographies. Fulton Bank, N.A. has been and is cooperating with the Department and responding to the Department’s requests for information. During the third quarter of 2016, the Department informed the Corporation, Fulton Bank, N.A., and three of the Corporation’s other bank subsidiaries, Fulton Bank of New Jersey (which merged with and into Fulton Bank, N.A. effective on May 18, 2019), The Columbia Bank and Lafayette Ambassador Bank, that the Department was expanding its investigation of potential lending discrimination on the basis of race and national origin to encompass additional geographies that were not included in the initial letter from the Department. In addition to requesting information concerning the lending activities of these bank subsidiaries, the Department also requested information concerning the Corporation and the residential mortgage lending activities conducted under the Fulton Mortgage Company brand, the trade name used by all of the Corporation’s bank subsidiaries for residential mortgage lending. The investigation relates to lending activities during the period January 1, 2009 to the present. The Corporation and the identified bank subsidiaries are cooperating with the Department and responding to the Department’s requests for information. The Corporation and its bank subsidiaries are not able at this time to determine the terms on which this investigation will be resolved or the timing of such resolution. Should the investigation result in an enforcement action against the Corporation or its bank subsidiaries, or a settlement with the Department, the ability of the Corporation and its bank subsidiaries to engage in certain expansion or other activities may be restricted. 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)	6 Months Ended
	Jun. 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 six months ended June 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 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. 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 is a single impairment model for all financial assets (i.e., loans and held to maturity investments). The recognition of credit losses would be based on an entity’s current estimate of expected losses (referred to as the Current Expected Credit Loss model, or "CECL"), as opposed to recognition of losses only when they are 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. 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 Corporation believes that total credit loss reserves 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 off balance sheet credit exposures as well as the prevailing economic conditions and forecasts as of the adoption date. The Corporation is in the early stages of conducting parallel runs of its new processes and controls and is beginning its model validation process. The Corporation will continue to make refinements to its credit loss model throughout the remainder of 2019. 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 2020, in line with its annual impairment testing in October of each year 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 2012 impairment testing. 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. Standard Description Date of Anticipated Adoption Effect on 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)	6 Months Ended
	Jun. 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: Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Estimated Fair Value June 30, 2019 (in thousands) Available for Sale State and municipal securities $ 307,911 $ 8,508 $ (85 ) $ 316,334 Corporate debt securities 194,858 4,885 (2,321 ) 197,422 Collateralized mortgage obligations 889,053 12,190 (2,126 ) 899,117 Residential mortgage-backed securities 331,566 1,623 (3,914 ) 329,275 Commercial mortgage-backed securities 433,027 7,406 (152 ) 440,281 Auction rate securities 107,410 — (4,045 ) 103,365 Total $ 2,263,825 $ 34,612 $ (12,643 ) $ 2,285,794 Held to Maturity State and municipal securities $ 155,861 $ 8,700 $ — $ 164,561 Residential mortgage-backed securities 411,703 13,464 — 425,167 Total $ 567,564 $ 22,164 $ — $ 589,728 Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Estimated Fair Value December 31, 2018 (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 June 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 $ 5,828 $ 5,828 $ — $ — Due from one year to five years 38,664 39,900 — — Due from five years to ten years 175,654 178,922 2,154 2,277 Due after ten years 390,033 392,471 153,707 162,284 610,179 617,121 155,861 164,561 Residential mortgage-backed securities (1) 331,566 329,275 411,703 425,167 Commercial mortgage-backed securities (1) 433,027 440,281 — — Collateralized mortgage obligations (1) 889,053 899,117 — — Total $ 2,263,825 $ 2,285,794 $ 567,564 $ 589,728 (1) Maturities for mortgage-backed securities and collateralized mortgage obligations 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 June 30, 2019 (in thousands) Debt securities $ 3,012 $ (2,836 ) $ 176 Total $ 3,012 $ (2,836 ) $ 176 Three months ended June 30, 2018 Debt securities $ 1,530 $ (1,526 ) $ 4 Total $ 1,530 $ (1,526 ) $ 4 Six months ended June 30, 2019 Debt securities $ 3,269 $ (3,028 ) $ 241 Total $ 3,269 $ (3,028 ) $ 241 Six months ended June 30, 2018 Equity securities $ 9 $ — $ 9 Debt securities 1,540 (1,526 ) 14 Total $ 1,549 $ (1,526 ) $ 23
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 June 30, 2019 and 2018: Three months ended June 30 Six months ended June 30 2019 2018 2019 2018 (in thousands) Balance of cumulative credit losses on debt securities, beginning of period $ (11,510 ) $ (11,510 ) $ (11,510 ) $ (11,510 ) Reductions for securities sold during the period 10,520 — 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 June 30, 2019 and December 31, 2018: Less than 12 months 12 months or longer Total June 30, 2019 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 3 $ 15,714 $ (44 ) 4 $ 17,403 $ (41 ) $ 33,117 $ (85 ) Corporate debt securities 3 7,054 (8 ) 14 25,988 (2,313 ) 33,042 (2,321 ) Collateralized mortgage obligations — — — 39 110,517 (2,126 ) 110,517 (2,126 ) Residential mortgage-backed securities — — — 61 285,675 (3,914 ) 285,675 (3,914 ) Commercial mortgage-backed securities 1 11,926 (143 ) 2 17,475 (9 ) 29,401 (152 ) Auction rate securities — — — 177 103,365 (4,045 ) 103,365 (4,045 ) Total 7 $ 34,694 $ (195 ) 297 $ 560,423 $ (12,448 ) $ 595,117 $ (12,643 ) No Held to Maturity investments were in an unrealized loss position at June 30, 2019. Less than 12 months 12 months or longer Total December 31, 2018 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)	6 Months Ended
	Jun. 30, 2019
Financing Receivable, Modifications [Line Items]
Summary of Gross Loans by Type	Loans and leases, net of unearned income are summarized as follows: June 30, December 31, 2018 (in thousands) Real-estate - commercial mortgage $ 6,497,973 $ 6,434,285 Commercial - industrial, financial and agricultural 4,365,248 4,404,548 Real estate - residential mortgage 2,451,966 2,251,044 Real estate - home equity 1,386,974 1,452,137 Real estate - construction 922,547 916,599 Consumer 452,874 419,186 Equipment lease financing and other 314,901 311,866 Overdrafts 3,187 2,774 Loans and leases, gross of unearned income 16,395,670 16,192,439 Unearned income (27,212 ) (26,639 ) Loans and leases, net of unearned income $ 16,368,458 $ 16,165,800
Schedule of Allowance for Credit Losses	The following table presents the components of the allowance for credit losses: June 30, December 31, (in thousands) Allowance for loan and lease losses $ 170,233 $ 160,537 Reserve for unfunded lending commitments 6,708 8,873 Allowance for credit losses $ 176,941 $ 169,410
Activity in the Allowance for Credit Losses	The following table presents the activity in the allowance for credit losses: Three months ended June 30 Six months ended June 30 2019 2018 2019 2018 (in thousands) Balance at beginning of period $ 170,372 $ 176,019 $ 169,410 $ 176,084 Loans and leases charged off (3,711 ) (42,160 ) (10,080 ) (48,557 ) Recoveries of loans and leases previously charged off 5,255 2,271 7,486 4,633 Net loans and leases recovered (charged off) 1,544 (39,889 ) (2,594 ) (43,924 ) Provision for credit losses 5,025 33,117 10,125 37,087 Balance at end of period $ 176,941 $ 169,247 $ 176,941 $ 169,247 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 June 30, 2019 Balance at March 31, 2019 $ 51,946 $ 60,501 $ 19,215 $ 19,146 $ 4,941 $ 3,319 $ 3,041 $ 162,109 Loans and leases charged off (230 ) (1,895 ) (206 ) (134 ) (3 ) (795 ) (448 ) (3,711 ) Recoveries of loans and leases previously charged off 169 2,680 223 211 1,245 579 148 5,255 Net loans and leases (charged off) recovered (61 ) 785 17 77 1,242 (216 ) (300 ) 1,544 Provision for loan and lease losses (1) 2,974 5,055 (251 ) (331 ) (1,255 ) 260 128 6,580 Balance at June 30, 2019 $ 54,859 $ 66,341 $ 18,981 $ 18,892 $ 4,928 $ 3,363 $ 2,869 $ 170,233 Three months ended June 30, 2018 Balance at March 31, 2018 $ 58,717 $ 61,830 $ 17,528 $ 15,261 $ 5,924 $ 1,903 $ 2,054 $ 163,217 Loans and leases charged off (366 ) (38,632 ) (816 ) (483 ) (606 ) (712 ) (545 ) (42,160 ) Recoveries of loans and leases previously charged off 321 541 271 96 444 446 152 2,271 Net loans and leases charged off (45 ) (38,091 ) (545 ) (387 ) (162 ) (266 ) (393 ) (39,889 ) Provision for loan and lease losses (1) (2,089 ) 35,306 (736 ) (370 ) 226 62 323 32,722 Balance at June 30, 2018 $ 56,583 $ 59,045 $ 16,247 $ 14,504 $ 5,988 $ 1,699 $ 1,984 $ 156,050 Six months ended June 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 (1,375 ) (4,682 ) (425 ) (789 ) (98 ) (1,478 ) (1,233 ) (10,080 ) Recoveries of loans and leases previously charged off 305 3,923 420 343 1,329 789 377 7,486 Net loans and leases (charged off) recovered (1,070 ) (759 ) (5 ) (446 ) 1,231 (689 ) (856 ) (2,594 ) Provision for loan losses (1) 3,040 8,232 75 417 (1,364 ) 835 1,055 12,290 Balance at June 30, 2019 $ 54,859 $ 66,341 $ 18,981 $ 18,892 $ 4,928 $ 3,363 $ 2,869 $ 170,233 Six months ended June 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 (633 ) (42,637 ) (1,224 ) (645 ) (764 ) (1,604 ) (1,050 ) (48,557 ) Recoveries of loans and leases previously charged off 600 1,616 477 203 750 625 362 4,633 Net loans and leases charged off (33 ) (41,021 ) (747 ) (442 ) (14 ) (979 ) (688 ) (43,924 ) Provision for loan losses (1) (2,177 ) 33,786 (1,133 ) (1,142 ) (618 ) 633 715 30,064 Balance at June 30, 2018 $ 56,583 $ 59,045 $ 16,247 $ 14,504 $ 5,988 $ 1,699 $ 1,984 $ 156,050 (1) The provision for loan and lease losses excluded a $1.6 million and a $2.2 million decrease in the reserve for unfunded lending commitments for the three and six months ended June 30, 2019 , respectively, and a $395,000 and a $7.0 million increase in the reserve for unfunded lending commitments for the three and six months ended June 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 June 30, 2019: Collectively evaluated for impairment $ 45,367 $ 53,985 $ 8,463 $ 9,913 $ 4,399 $ 3,356 $ 2,869 $ 128,352 Individually evaluated for impairment 9,492 12,356 10,518 8,979 529 7 — 41,881 $ 54,859 $ 66,341 $ 18,981 $ 18,892 $ 4,928 $ 3,363 $ 2,869 $ 170,233 Loans and leases, net of unearned income at June 30, 2019: Collectively evaluated for impairment $ 6,438,080 $ 4,313,666 $ 1,363,392 $ 2,414,627 $ 918,380 $ 452,865 $ 273,118 $ 16,174,128 Individually evaluated for impairment 59,893 51,582 23,582 37,339 4,167 9 17,758 194,330 $ 6,497,973 $ 4,365,248 $ 1,386,974 $ 2,451,966 $ 922,547 $ 452,874 $ 290,876 $ 16,368,458 Allowance for loan and lease losses at June 30, 2018: Collectively evaluated for impairment $ 48,489 $ 49,354 $ 5,093 $ 5,171 $ 5,338 $ 1,691 $ 1,984 $ 117,120 Individually evaluated for impairment 8,094 9,691 11,154 9,333 650 8 — 38,930 $ 56,583 $ 59,045 $ 16,247 $ 14,504 $ 5,988 $ 1,699 $ 1,984 $ 156,050 Loans and leases, net of unearned income at June 30, 2018: Collectively evaluated for impairment $ 6,252,747 $ 4,209,786 $ 1,466,393 $ 2,055,206 $ 981,584 $ 360,304 $ 286,947 $ 15,612,967 Individually evaluated for impairment 51,728 54,816 25,002 39,324 9,121 11 — 180,002 $ 6,304,475 $ 4,264,602 $ 1,491,395 $ 2,094,530 $ 990,705 $ 360,315 $ 286,947 $ 15,792,969
Total Impaired Loans by Class Segment	The following table presents total impaired loans and leases by class segment: June 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 $ 32,406 $ 30,574 $ — $ 25,095 $ 23,481 $ — Commercial 29,696 23,588 — 33,493 26,585 — Real estate - residential mortgage 4,565 4,400 — 3,149 3,149 — Construction 6,454 2,604 — 8,980 5,083 — Equipment lease financing 17,758 17,758 — 19,269 19,268 — 90,879 78,924 — 89,986 77,566 — With a related allowance recorded: Real estate - commercial mortgage 40,435 29,319 9,492 29,005 22,592 7,255 Commercial 38,010 27,994 12,356 37,706 28,708 12,513 Real estate - residential mortgage 37,202 32,939 8,979 39,972 35,621 9,394 Real estate - home equity 26,712 23,582 10,518 26,599 23,373 10,370 Construction 5,112 1,563 529 5,984 2,307 793 Consumer 9 9 7 11 11 7 147,480 115,406 41,881 139,277 112,612 40,332 Total $ 238,359 $ 194,330 $ 41,881 $ 229,263 $ 190,178 $ 40,332 As of June 30, 2019 and December 31, 2018 , there were $78.9 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 June 30 Six months ended June 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 $ 27,738 $ 100 $ 27,127 $ 97 $ 26,319 $ 197 $ 25,713 $ 180 Commercial 25,238 32 33,644 69 25,686 62 35,612 142 Real estate - residential mortgage 3,764 23 3,870 24 3,559 43 4,105 51 Construction 3,814 — 7,528 — 4,237 — 7,718 — Equipment lease financing, other and overdrafts 18,136 — — — 18,513 — — 78,690 155 72,169 190 78,314 302 73,148 373 With a related allowance recorded: Real estate - commercial mortgage 24,528 87 25,419 91 23,883 172 25,578 175 Commercial 28,485 36 26,120 54 28,558 69 25,471 97 Real estate - home equity 23,706 222 24,907 195 23,595 445 24,835 379 Real estate - residential mortgage 34,695 215 36,261 223 35,004 440 36,551 444 Construction 1,595 — 2,400 — 1,832 — 2,966 — Consumer 10 — 18 — 10 — 20 — 113,019 560 115,125 563 112,882 1,126 115,421 1,095 Total $ 191,709 $ 715 $ 187,294 $ 753 $ 191,196 $ 1,428 $ 188,569 $ 1,468 (1) All impaired loans, excluding accruing TDRs, were non-accrual loans. Interest income recognized for the three and six months ended June 30, 2019 and 2018 represents 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 June 30, 2019 December 31, 2018 June 30, 2019 December 31, 2018 June 30, 2019 December 31, 2018 June 30, 2019 December 31, 2018 (dollars in thousands) Real estate - home equity $ 1,363,344 $ 1,431,666 $ 11,634 $ 10,702 $ 11,996 $ 9,769 $ 1,386,974 $ 1,452,137 Real estate - residential mortgage 2,398,432 2,202,955 31,876 28,988 21,658 19,101 2,451,966 2,251,044 Construction - other 76,116 71,511 549 — 189 490 76,854 72,001 Consumer - direct 58,295 55,629 295 338 123 66 58,713 56,033 Consumer - indirect 390,394 359,405 3,508 3,405 259 343 394,161 363,153 Total consumer 448,689 415,034 3,803 3,743 382 409 452,874 419,186 Equipment lease financing, other and overdrafts 271,130 267,112 1,808 1,302 17,938 19,587 290,876 288,001 $ 4,557,711 $ 4,388,278 $ 49,670 $ 44,735 $ 52,163 $ 49,356 $ 4,659,544 $ 4,482,369 % of Total 97.8 % 97.9 % 1.1 % 1.0 % 1.1 % 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 June 30, 2019 December 31, 2018 June 30, 2019 December 31, 2018 June 30, 2019 December 31, 2018 June 30, 2019 December 31, 2018 (dollars in thousands) Real estate - commercial mortgage $ 6,173,883 $ 6,129,463 $ 162,425 $ 170,827 $ 161,665 $ 133,995 $ 6,497,973 $ 6,434,285 Commercial - secured 3,835,171 3,902,484 182,569 193,470 171,856 129,026 4,189,596 4,224,980 Commercial - unsecured 168,311 171,589 4,972 4,016 2,369 3,963 175,652 179,568 Total commercial - industrial, financial and agricultural 4,003,482 4,074,073 187,541 197,486 174,225 132,989 4,365,248 4,404,548 Construction - commercial residential 109,168 104,079 3,082 6,912 3,959 6,881 116,209 117,872 Construction - commercial 725,556 723,030 731 1,163 3,197 2,533 729,484 726,726 Total construction (excluding Construction - other) 834,724 827,109 3,813 8,075 7,156 9,414 845,693 844,598 $ 11,012,089 $ 11,030,645 $ 353,779 $ 376,388 $ 343,046 $ 276,398 $ 11,708,914 $ 11,683,431 % of Total 94.1 % 94.4 % 3.0 % 3.2 % 2.9 % 2.4 % 100.0 % 100.0 %
Non-Performing Assets	The following table presents non-performing assets: June 30, December 31, (in thousands) Non-accrual loans and leases $ 133,118 $ 128,572 Loans and leases 90 days or more past due and still accruing 14,598 11,106 Total non-performing loans and leases 147,716 139,678 Other real estate owned (OREO) 7,241 10,518 Total non-performing assets $ 154,957 $ 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: June 30, 2019 30-59 Days Past Due 60-89 Days Past Due ≥ 90 Days Past Due and Accruing Non- accrual Total ≥ 90 Days Total Past Due Current Total (in thousands) Real estate - commercial mortgage $ 16,620 $ 2,059 $ 637 $ 43,213 $ 43,850 $ 62,529 $ 6,435,444 $ 6,497,973 Commercial - secured 8,480 1,923 1,422 45,114 46,536 56,939 4,132,657 4,189,596 Commercial - unsecured 592 136 — 723 723 1,451 174,201 175,652 Total commercial - industrial, financial and agricultural 9,072 2,059 1,422 45,837 47,259 58,390 4,306,858 4,365,248 Real estate - home equity 9,370 2,264 4,803 7,193 11,996 23,630 1,363,344 1,386,974 Real estate - residential mortgage 26,135 5,741 6,708 14,950 21,658 53,534 2,398,432 2,451,966 Construction - commercial residential — — — 3,959 3,959 3,959 112,250 116,209 Construction - commercial 895 — 466 19 485 1,380 728,104 729,484 Construction - other 549 — — 189 189 738 76,116 76,854 Total real estate - construction 1,444 — 466 4,167 4,633 6,077 916,470 922,547 Consumer - direct 205 90 123 — 123 418 58,295 58,713 Consumer - indirect 2,901 607 259 — 259 3,767 390,394 394,161 Total consumer 3,106 697 382 — 382 4,185 448,689 452,874 Equipment lease financing, other and overdrafts 1,365 443 180 17,758 17,938 19,746 271,130 290,876 Total $ 67,112 $ 13,263 $ 14,598 $ 133,118 $ 147,716 $ 228,091 $ 16,140,367 $ 16,368,458 December 31, 2018 30-59 Days Past Due 60-89 Days Past Due ≥ 90 Days Past Due and Accruing Non- accrual Total ≥ 90 Days Total Past Due Current Total (in thousands) Real estate - commercial mortgage $ 12,206 $ 1,500 $ 1,765 $ 30,388 $ 32,153 $ 45,859 $ 6,388,426 $ 6,434,285 Commercial - secured 5,227 938 1,068 49,299 50,367 56,532 4,168,448 4,224,980 Commercial - unsecured 1,598 — 51 851 902 2,500 177,068 179,568 Total commercial - industrial, financial and agricultural 6,825 938 1,119 50,150 51,269 59,032 4,345,516 4,404,548 Real estate - home equity 7,144 3,558 3,061 6,708 9,769 20,471 1,431,666 1,452,137 Real estate - residential mortgage 20,796 8,192 4,433 14,668 19,101 48,089 2,202,955 2,251,044 Construction - commercial residential 2,489 — — 6,881 6,881 9,370 108,502 117,872 Construction - commercial — — — 19 19 19 726,707 726,726 Construction - other — — — 490 490 490 71,511 72,001 Total real estate - construction 2,489 — — 7,390 7,390 9,879 906,720 916,599 Consumer - direct 267 71 66 — 66 404 55,629 56,033 Consumer - indirect 2,908 497 343 — 343 3,748 359,405 363,153 Total consumer 3,175 568 409 — 409 4,152 415,034 419,186 Equipment lease financing, other and overdrafts 1,005 297 319 19,268 19,587 20,889 267,112 288,001 Total $ 53,640 $ 15,053 $ 11,106 $ 128,572 $ 139,678 $ 208,371 $ 15,957,429 $ 16,165,800
Troubled Debt Restructurings on Financing Receivables	The following table presents TDRs, by class segment: June 30, December 31, (in thousands) Real-estate - residential mortgage $ 22,389 $ 24,102 Real estate - home equity 16,389 16,665 Real-estate - commercial mortgage 16,680 15,685 Commercial 5,744 5,143 Consumer 9 10 Total accruing TDRs 61,211 61,605 Non-accrual TDRs (1) 29,958 28,659 Total TDRs $ 91,169 $ 90,264 (1)
Loan Terms Modified Under Troubled Debt Restructurings	he following table presents TDRs, by class segment, as of June 30, 2019 and 2018 that were modified in the previous 12 months and had a post-modification payment default during the six months ended June 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 2 $ 299 8 $ 863 Real estate - commercial mortgage — — 1 176 Real estate - home equity 16 890 29 1,955 Commercial 4 2,302 5 146 Total 22 $ 3,491 43 $ 3,140 The following table presents TDRs, by class segment for loans that were modified during the three and six months ended June 30, 2019 and 2018: Three months ended June 30 Six months ended June 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) Commercial 6 $ 2,371 2 $ 53 10 $ 4,831 11 $ 9,412 Real estate - residential mortgage 1 516 1 77 5 1,433 2 82 Real estate - home equity 22 1,125 28 1,659 34 1,954 47 3,043 Total 29 $ 4,012 31 $ 1,789 49 $ 8,218 60 $ 12,537

Mortgage Servicing Rights (Tabl

Mortgage Servicing Rights (Tables)	6 Months Ended
	Jun. 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 June 30 Six months ended June 30 2019 2018 2019 2018 (in thousands) Amortized cost: Balance at beginning of period $ 38,504 $ 37,748 $ 38,573 $ 37,663 Originations of mortgage servicing rights 1,861 1,746 3,086 3,229 Amortization (1,539 ) (1,600 ) (2,833 ) (2,998 ) Balance at end of period $ 38,826 $ 37,894 $ 38,826 $ 37,894

Leases (Tables)

Leases (Tables)	6 Months Ended
	Jun. 30, 2019
Leases [Abstract]
Lease Cost and Supplemental Cash Flow Information	The following table presents the components of the Corporation’s lease costs for operating leases as the lessee, which is included in net occupancy expense on the consolidated statements of income (in thousands): Three months ended Six months ended June 30, 2019 June 30, 2019 Operating lease expense $ 4,796 $ 9,486 Variable lease expense 761 1,370 Sublease income (168 ) (371 ) Total lease expense $ 5,389 $ 10,485 Supplemental cash flow information related to operating leases was as follows (in thousands): Six months ended June 30, 2019 Cash paid for amounts included in the measurement of lease liabilities $ 9,269 ROU assets obtained in exchange for lease obligations $ 111,995
Supplemental Balance Sheet Information	Supplemental balance sheet information related to leases was as follows (in thousands, except for weighted-averages): Operating Leases Classification June 30, 2019 ROU assets Other assets $ 104,046 Lease liabilities Other liabilities $ 110,987 Weighted-average remaining lease term 8.4 years Weighted-average discount rate 3.06 %
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 six months ending December 31, 2019 $ 9,390 2020 18,607 2021 17,400 2022 16,052 2023 13,804 Thereafter 52,664 Total lease payments 127,917 Less: imputed interest (16,930 ) Present value of lease liabilities $ 110,987

Derivative Financial Instrume_2

Derivative Financial Instruments (Tables)	6 Months Ended
	Jun. 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: June 30, 2019 December 31, 2018 Notional Asset Notional Asset (in thousands) Interest Rate Locks with Customers Positive fair values $ 184,657 $ 2,118 $ 101,700 $ 1,148 Negative fair values 3,090 (21 ) 1,646 (12 ) Net interest rate locks with customers 2,097 1,136 Forward Commitments Positive fair values 40,334 221 1,540 3 Negative fair values 111,530 (1,631 ) 83,562 (1,066 ) Net forward commitments (1,410 ) (1,063 ) Interest Rate Swaps with Customers Positive fair values 2,514,261 136,298 1,185,144 33,258 Negative fair values 292,200 (1,716 ) 1,386,046 (30,769 ) Net interest rate swaps with customers 134,582 2,489 Interest Rate Swaps with Dealer Counterparties Positive fair values (1) 292,200 1,716 1,386,046 28,143 Negative fair values (1) 2,514,261 (74,516 ) 1,185,144 (16,338 ) Net interest rate swaps with dealer counterparties (72,800 ) 11,805 Foreign Exchange Contracts with Customers Positive fair values 6,423 105 5,881 105 Negative fair values 6,643 (186 ) 9,690 (251 ) Net foreign exchange contracts with customers (81 ) (146 ) Foreign Exchange Contracts with Correspondent Banks Positive fair values 8,750 226 9,220 287 Negative fair values 6,590 (100 ) 6,831 (130 ) Net foreign exchange contracts with correspondent banks 126 157 Net derivative fair value asset $ 62,514 $ 14,378 (1) The variation margin posted as collateral on centrally cleared interest rate swaps, which represents the fair value of such swaps, is legally characterized as a settlement of the outstanding derivative contracts instead of cash collateral. Accordingly, the fair values of centrally cleared interest rate swaps were offset by variation margins totaling $61.8 million and $14.3 million at June 30, 2019 and December 31, 2018 , respectively.
Summary of Fair Value Gains and Losses on Derivative Financial Instruments	The following table presents a summary of the fair value gains (losses) on derivative financial instruments: Three months ended June 30 Six months ended June 30 2019 2018 2019 2018 (in thousands) Interest rate locks with customers $ 355 $ 231 $ 961 $ 360 Forward commitments (403 ) (541 ) (347 ) (315 ) Interest rate swaps with customers 81,576 (12,375 ) 132,093 (55,017 ) Interest rate swaps with dealer counterparties (1) (50,673 ) 10,811 (84,605 ) 44,625 Foreign exchange contracts with customers (154 ) (23 ) 65 (16 ) Foreign exchange contracts with correspondent banks 140 (50 ) (31 ) 38 Net fair value gains (losses) on derivative financial instruments $ 30,841 $ (1,947 ) $ 48,136 $ (10,325 ) (1) Not included are $31.2 million and $47.5 million , respectively, of losses related to the variation margin settlements for the three and six months ended June 30, 2019 and
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: June 30, December 31, (in thousands) Cost (1) $ 44,737 $ 26,407 Fair value 45,754 27,099 (1) Cost basis of mortgage loans held for sale represents the unpaid principal balance.
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) June 30, 2019 Interest rate swap derivative assets $ 138,275 $ (1,941 ) $ — $ 136,334 Foreign exchange derivative assets with correspondent banks 219 (93 ) — 126 Total $ 138,494 $ (2,034 ) $ — $ 136,460 Interest rate swap derivative liabilities $ 76,232 $ (1,941 ) $ (74,291 ) $ — Foreign exchange derivative liabilities with correspondent banks 93 (93 ) — — Total $ 76,325 $ (2,034 ) $ (74,291 ) $ — 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) June 30, 2019 Interest rate swap derivative assets $ 138,275 $ (1,941 ) $ — $ 136,334 Foreign exchange derivative assets with correspondent banks 219 (93 ) — 126 Total $ 138,494 $ (2,034 ) $ — $ 136,460 Interest rate swap derivative liabilities $ 76,232 $ (1,941 ) $ (74,291 ) $ — Foreign exchange derivative liabilities with correspondent banks 93 (93 ) — — Total $ 76,325 $ (2,034 ) $ (74,291 ) $ — 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)	6 Months Ended
	Jun. 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: June 30, December 31, 2019 2018 Included in other assets: (in thousands) Affordable housing tax credit investment, net $ 161,986 $ 170,401 Other tax credit investments, net 72,786 72,584 Total TCIs, net $ 234,772 $ 242,985 Included in other liabilities: Unfunded affordable housing tax credit commitments $ 18,542 $ 23,196 Other tax credit investment liabilities 61,483 59,823 Total unfunded tax credit investment commitments and liabilities $ 80,025 $ 83,019 The following table presents other information relating to the Corporation's TCIs: Three Months Ended Six Months Ended June 30 June 30 2019 2018 2019 2018 Components of income taxes: (in thousands) Affordable housing tax credits and other tax benefits $ (7,575 ) $ (7,543 ) $ (15,150 ) $ (15,087 ) Other tax credit investment credits and tax benefits (1,135 ) (1,597 ) (2,271 ) (3,193 ) Amortization of affordable housing investments, net of tax benefit 5,494 5,319 10,989 10,917 Deferred tax expense 239 336 477 671 Total reduction in income tax expense $ (2,977 ) $ (3,485 ) $ (5,955 ) $ (6,692 ) Amortization of TCIs: Affordable housing tax credits investment $ 823 $ 839 $ 1,645 $ 1,678 Other tax credit investment amortization 669 798 1,338 1,596 Total amortization of TCIs $ 1,492 $ 1,637 $ 2,983 $ 3,274

Accumulated Other Comprehensi_2

Accumulated Other Comprehensive Income Accumulated Other Comprehensive Income (Tables)	6 Months Ended
	Jun. 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 June 30, 2019 Unrealized gain on securities $ 31,994 $ (7,077 ) $ 24,917 Reclassification adjustment for securities gains included in net income (1) (176 ) 39 (137 ) Amortization of net unrealized losses on available for sale ("AFS") securities transferred to held to maturity ("HTM") (2) 1,311 (290 ) 1,021 Non-credit related unrealized losses on other-than-temporarily impaired debt securities (770 ) 170 (600 ) Amortization of net unrecognized pension and postretirement items (3) 353 (78 ) 275 Total Other Comprehensive Income $ 32,712 $ (7,236 ) $ 25,476 Three months ended June 30, 2018 Unrealized loss on securities $ (8,397 ) $ 1,766 $ (6,631 ) Reclassification adjustment for securities gains included in net income (1) (4 ) 1 (3 ) Non-credit related unrealized gains on other-than-temporarily impaired debt securities 9 (1 ) 8 Amortization of net unrecognized pension and postretirement items (3) 683 (143 ) 540 Total Other Comprehensive Loss $ (7,709 ) $ 1,623 $ (6,086 ) Six months ended June 30, 2019 Unrealized gain on securities $ 58,056 $ (12,841 ) $ 45,215 Reclassification adjustment for securities gains included in net income (1) (241 ) 53 (188 ) Amortization of net unrealized losses on AFS securities transferred to HTM (2) 2,563 (568 ) 1,995 Non-credit related unrealized losses on other-than-temporarily impaired debt securities (875 ) 193 (682 ) Amortization of net unrecognized pension and postretirement items (3) 727 (161 ) 566 Total Other Comprehensive Income $ 60,230 $ (13,324 ) $ 46,906 Six months ended June 30, 2018 Unrealized loss on securities $ (43,388 ) $ 9,113 $ (34,275 ) Reclassification adjustment for securities gains included in net income (1) (23 ) 4 (19 ) Non-credit related unrealized gains on other-than-temporarily impaired debt securities 294 (62 ) 232 Amortization of net unrecognized pension and postretirement items (3) 1,113 (234 ) 879 Total Other Comprehensive Loss $ (42,004 ) $ 8,821 $ (33,183 ) (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) 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 June 30, 2019 Balance at March 31, 2019 $ (23,433 ) $ 598 $ (14,798 ) $ (37,633 ) Other comprehensive income before reclassifications 24,917 (600 ) — 24,317 Amounts reclassified from accumulated other comprehensive income (loss) (137 ) — 275 138 Amortization of net unrealized losses on AFS securities transferred to HTM 1,021 — — — 1,021 Balance at June 30, 2019 $ 2,368 $ (2 ) $ (14,523 ) $ (12,157 ) Three months ended June 30, 2018 Balance at March 31, 2018 $ (50,056 ) $ 682 $ (17,798 ) $ (67,172 ) Other comprehensive loss before reclassifications (6,631 ) 8 — (6,623 ) Amounts reclassified from accumulated other comprehensive income (loss) (3 ) — 540 537 Balance at June 30, 2018 $ (56,690 ) $ 690 $ (17,258 ) $ (73,258 ) Six months ended June 30, 2019 Balance at December 31, 2018 $ (44,654 ) $ 680 $ (15,089 ) $ (59,063 ) Other comprehensive income before reclassifications 45,215 (682 ) — 44,533 Amounts reclassified from accumulated other comprehensive income (loss) (188 ) — 566 378 Amortization of net unrealized losses on AFS securities transferred to HTM 1,995 — — 1,995 Balance at June 30, 2019 $ 2,368 $ (2 ) $ (14,523 ) $ (12,157 ) Six months ended June 30, 2018 Balance at December 31, 2017 $ (18,509 ) $ 458 $ (14,923 ) $ (32,974 ) Other comprehensive loss before reclassifications (34,275 ) 232 — (34,043 ) Amounts reclassified from accumulated other comprehensive income (loss) (19 ) — 879 860 Reclassification of stranded tax effects (3,887 ) — (3,214 ) (7,101 ) Balance at June 30, 2018 $ (56,690 ) $ 690 $ (17,258 ) $ (73,258 )

Fair Value Measurements (Tables

Fair Value Measurements (Tables)	6 Months Ended
	Jun. 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: June 30, 2019 Level 1 Level 2 Level 3 Total (in thousands) Loans held for sale $ — $ 45,754 $ — $ 45,754 Available for sale investment securities: State and municipal securities — 316,334 — 316,334 Corporate debt securities — 195,052 2,370 197,422 Collateralized mortgage obligations — 899,117 — 899,117 Residential mortgage-backed securities — 329,275 — 329,275 Commercial mortgage-backed securities — 440,281 — 440,281 Auction rate securities — — 103,365 103,365 Total available for sale investment securities — 2,180,059 105,735 2,285,794 Other assets: Investments held in Rabbi Trust 20,811 — — 20,811 Derivative assets 541 140,353 — 140,894 Total assets $ 21,352 $ 2,366,166 $ 105,735 $ 2,493,253 Other liabilities: Deferred compensation liabilities 20,811 — — 20,811 Derivative liabilities 475 77,883 — 78,358 Total liabilities $ 21,286 $ 77,883 $ — $ 99,169 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 June 30, 2019 (in thousands) Balance at March 31, 2019 $ 770 $ 2,430 $ 102,810 Sales (770 ) — — Unrealized adjustment to fair value (1) — (60 ) 555 Balance at June 30, 2019 $ — $ 2,370 $ 103,365 Three months ended June 30, 2018 Balance at March 31, 2018 $ 865 $ 3,095 $ 103,049 Unrealized adjustment to fair value (1) 10 102 73 Discount accretion (2) — 3 — Balance at June 30, 2018 $ 875 $ 3,200 $ 103,122 Six months ended June 30, 2019 Balance at December 31, 2018 $ 875 $ 2,400 $ 102,994 Sales (770 ) — — Unrealized adjustment to fair value (1) (105 ) (30 ) 371 Balance at June 30, 2019 $ — $ 2,370 $ 103,365 Six months ended June 30, 2018 Balance at December 31, 2017 $ 707 $ 3,050 $ 98,668 Unrealized adjustment to fair value (1) 168 144 4,454 Discount accretion (2) — 6 — Balance at June 30, 2018 $ 875 $ 3,200 $ 103,122 (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 the Corporation’s Level 3 financial assets measured at fair value on a nonrecurring basis and reported on the Corporation’s consolidated balance sheets: June 30, 2019 December 31, 2018 (in thousands) Net loans and leases $ 152,451 $ 149,846 OREO 7,241 10,518 MSRs 44,916 50,204 Total assets $ 204,608 $ 210,568
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 June 30, 2019 and December 31, 2018 . A general description of the methods and assumptions used to estimate such fair values follows: June 30, 2019 Estimated Fair Value Carrying Amount Level 1 Level 2 Level 3 Total (in thousands) FINANCIAL ASSETS Cash and cash equivalents $ 498,811 $ 498,811 $ — $ — $ 498,811 FRB and FHLB stock 97,248 — 97,248 — 97,248 Loans held for sale 45,754 — 45,754 — 45,754 Available for sale investment securities 2,285,794 — 2,180,059 105,735 2,285,794 Held to maturity investment securities 567,564 589,728 — — 589,728 Net Loans and Leases 16,198,225 — — 16,019,233 16,019,233 Accrued interest receivable 62,984 62,984 — — 62,984 Other financial assets 318,776 132,356 140,353 46,067 318,776 FINANCIAL LIABILITIES Demand and savings deposits $ 13,249,017 $ 13,249,017 $ — $ — $ 13,249,017 Brokered deposits 246,116 206,116 40,292 — 246,408 Time deposits 2,893,762 — 2,894,290 — 2,894,290 Short-term borrowings 1,188,390 1,188,390 — — 1,188,390 Accrued interest payable 9,218 9,218 — — 9,218 Other financial liabilities 249,381 164,790 77,883 6,708 249,381 FHLB advances and long-term debt 987,416 — 986,336 — 986,336 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 financial 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 Other financial liabilities 218,061 161,003 48,185 8,873 218,061 FHLB advances and long-term debt 992,279 — 970,985 — 970,985

Net Income Per Share (Tables)

Net Income Per Share (Tables)	6 Months Ended
	Jun. 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 June 30 Six months ended June 30 2019 2018 2019 2018 Weighted average shares outstanding (basic) 168,343 175,764 169,109 175,535 Impact of common stock equivalents 825 1,080 933 1,171 Weighted average shares outstanding (diluted) 169,168 176,844 170,042 176,706 Per share: Basic $ 0.36 $ 0.20 $ 0.69 $ 0.48 Diluted 0.35 0.20 0.68 0.48

Stock-Based Compensation (Table

Stock-Based Compensation (Tables)	6 Months Ended
	Jun. 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 June 30 Six months ended June 30 2019 2018 2019 2018 (in thousands) Compensation expense $ 1,788 $ 2,674 $ 3,348 $ 4,184 Tax benefit (412 ) (1,075 ) (743 ) (1,536 ) Stock-based compensation expense, net of tax benefit $ 1,376 $ 1,599 $ 2,605 $ 2,648

Employee Benefit Plans (Tables)

Employee Benefit Plans (Tables)	6 Months Ended
	Jun. 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 June 30 Six months ended June 30 2019 2018 2019 2018 (in thousands) Interest cost $ 815 $ 696 $ 1,630 $ 1,527 Expected return on plan assets (689 ) (573 ) (1,378 ) (1,024 ) Net amortization and deferral 495 551 990 1,215 Net periodic pension cost $ 621 $ 674 $ 1,242 $ 1,718 The components of the net benefit for the Corporation’s Postretirement Benefits Plan ("Postretirement Plan") consisted of the following components: Three months ended June 30 Six months ended June 30 2019 2018 2019 2018 (in thousands) Interest cost $ 15 $ 12 $ 30 $ 29 Net accretion and deferral (139 ) (139 ) (278 ) (280 ) Net periodic benefit $ (124 ) $ (127 ) $ (248 ) $ (251 )

Commitments and Contingencies (

Commitments and Contingencies (Tables)	6 Months Ended
	Jun. 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: June 30, December 31, 2018 (in thousands) Commitments to extend credit $ 6,688,574 $ 6,306,583 Standby letters of credit 300,262 309,352 Commercial letters of credit 47,368 48,682

Basis of Presentation Narrative

Basis of Presentation Narrative (Details) $ in Thousands	Jun. 30, 2019USD ($)
Organization, Consolidation and Presentation of Financial Statements [Abstract]
ROU assets	$ 104,046
Lease liabilities	$ 110,987

Restrictions on Cash and Cash_2

Restrictions on Cash and Cash Equivalents (Details) - USD ($) $ in Millions	Jun. 30, 2019	Dec. 31, 2018
Restricted Cash and Cash Equivalents Items [Line Items]
Collateral	$ 173.1	$ 45.1
Subsidiaries
Restricted Cash and Cash Equivalents Items [Line Items]
Restricted cash reserves due from subsidiary	$ 186.6	$ 156.8

Investment Securities Schedule

Investment Securities Schedule of Amortized Cost and Fair Values of Investment Securities (Details) - USD ($) $ in Thousands	Jun. 30, 2019	Dec. 31, 2018
Schedule of Investments [Line Items]
Amortized Cost	$ 2,263,825
Gross Unrealized Gains	34,612
Gross Unrealized Losses	(12,643)
Estimated Fair Value	2,285,794	$ 2,080,294
Amortized Cost, Held to Maturity	567,564	606,679
Gross Unrealized Gains, Held to Maturity	22,164	4,833
Gross Unrealized Losses, Held to Maturity	0	(93)
Held to maturity investment securities	589,728	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	307,911
Gross Unrealized Gains	8,508
Gross Unrealized Losses	(85)
Estimated Fair Value	316,334
Amortized Cost, Held to Maturity	155,861	156,134
Gross Unrealized Gains, Held to Maturity	8,700	1,166
Gross Unrealized Losses, Held to Maturity	0	(93)
Held to maturity investment securities	164,561	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	194,858
Gross Unrealized Gains	4,885
Gross Unrealized Losses	(2,321)
Estimated Fair Value	197,422
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	889,053
Gross Unrealized Gains	12,190
Gross Unrealized Losses	(2,126)
Estimated Fair Value	899,117
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	331,566
Gross Unrealized Gains	1,623
Gross Unrealized Losses	(3,914)
Estimated Fair Value	329,275
Amortized Cost, Held to Maturity	411,703	450,545
Gross Unrealized Gains, Held to Maturity	13,464	3,667
Gross Unrealized Losses, Held to Maturity	0	0
Held to maturity investment securities	425,167	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	433,027
Gross Unrealized Gains	7,406
Gross Unrealized Losses	(152)
Estimated Fair Value	440,281
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	(4,045)
Estimated Fair Value	$ 103,365
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

Investment Securities Schedul_2

Investment Securities Schedule of Amortized Cost and Fair Values of Debt Securities by Contractual Maturities (Details) - USD ($) $ in Thousands	Jun. 30, 2019	Dec. 31, 2018
Amortized Cost
Due in one year or less	$ 5,828
Due from one year to five years	38,664
Due from five years to ten years	175,654
Due after ten years	390,033
Amortized cost, before securities without debt maturities	610,179
Amortized Cost	2,263,825
Estimated Fair Value
Due in one year or less	5,828
Due from one year to five years	39,900
Due from five years to ten years	178,922
Due after ten years	392,471
Available for sale securities, debt maturities, before securities without single maturities	617,121
Estimated Fair Value	2,285,794	$ 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	2,154
Due after ten years	153,707
Debt securities, held-to-maturity, maturity, allocated and single maturity date, amortized cost, total	155,861
Amortized Cost, Held to Maturity	567,564	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	2,277
Due after ten years	162,284
Debt securities, held-to-maturity, maturity, Allocated and single maturity date, fair value	164,561
Estimated Fair Value, Held to Maturity	589,728	611,419
Collateralized Mortgage Obligations [Member]
Amortized Cost
Available-for-sale securities, amortized cost without single maturity date	889,053
Amortized Cost	889,053
Estimated Fair Value
Available-for-sale securities, debt maturities, without single maturity date, fair value	899,117
Estimated Fair Value	899,117
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	433,027
Amortized Cost	433,027
Estimated Fair Value
Available-for-sale securities, debt maturities, without single maturity date, fair value	440,281
Estimated Fair Value	440,281
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	331,566
Amortized Cost	331,566
Estimated Fair Value
Available-for-sale securities, debt maturities, without single maturity date, fair value	329,275
Estimated Fair Value	329,275
Amortized Cost
Debt securities, held-to-maturity, maturity, without single maturity date, amortized cost	411,703
Amortized Cost, Held to Maturity	411,703	450,545
Estimated Fair Value
Debt securities, held-to-maturity, maturity, without single maturity date, fair value	425,167
Estimated Fair Value, Held to Maturity	$ 425,167	$ 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		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Gain (Loss) on Securities [Line Items]
Debt securities, Gross Realized Gains	$ 3,012		$ 3,269
Debt securities, Gross Realized Losses	2,836		3,028
Debt securities, Net Gains (Losses)	176		241
Debt and Equity securities, Gross Realized Gains	3,012		3,269
Debt and Equity securities, Gross Realized Losses	2,836		3,028
Debt and Equity securities, Net Gains (Losses)	$ 176		$ 241
Gross Realized Gains		$ 1,530		$ 1,549
Gross Realized Losses		(1,526)		(1,526)
Net Gains		4		23
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		1,530		1,540
Gross Realized Losses		(1,526)		(1,526)
Net Gains		$ 4		$ 14

Investment Securities Cumulativ

Investment Securities Cumulative Credit Related Other-Than-Temporary Impairment Charges (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Other than Temporary Impairment, Credit Losses Recognized in Earnings [Roll Forward]
Balance of cumulative credit losses on debt securities, beginning of period	$ (11,510)	$ (11,510)	$ (11,510)	$ (11,510)
Reductions for securities sold during the period	10,520	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)	Jun. 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	$ 34,694,000
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	$ (195,000)
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Number of Positions | Security	297
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer	$ 560,423,000
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer	(12,448,000)
Debt Securities, Available-for-sale, Unrealized Loss Position	595,117,000
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss	$ (12,643,000)
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Number of Positions | Security	7
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	$ 15,714,000
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	$ (44,000)
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Number of Positions | Security	4	38
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer	$ 17,403,000
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer	(41,000)
Debt Securities, Available-for-sale, Unrealized Loss Position	33,117,000
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss	$ (85,000)
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Number of Positions	3	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	$ 7,054,000
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	$ (8,000)
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Number of Positions | Security	14	14
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer	$ 25,988,000
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer	(2,313,000)
Debt Securities, Available-for-sale, Unrealized Loss Position	33,042,000
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss	$ (2,321,000)
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Number of Positions	3	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	$ 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	39	89
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer	$ 110,517,000
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer	(2,126,000)
Debt Securities, Available-for-sale, Unrealized Loss Position	110,517,000
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss	$ (2,126,000)
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Number of Positions	0	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	$ 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	61	110
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer	$ 285,675,000
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer	(3,914,000)
Debt Securities, Available-for-sale, Unrealized Loss Position	285,675,000
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss	$ (3,914,000)
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Number of Positions	0	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	$ 11,926,000
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	$ (143,000)
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Number of Positions | Security	2	25
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer	$ 17,475,000
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer	(9,000)
Debt Securities, Available-for-sale, Unrealized Loss Position	29,401,000
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss	$ (152,000)
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	$ 103,365,000
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer	(4,045,000)
Debt Securities, Available-for-sale, Unrealized Loss Position	103,365,000
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss	$ (4,045,000)
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	Jun. 30, 2019	Dec. 31, 2018
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	$ 2,263,825
Estimated Fair Value	2,285,794	$ 2,080,294
Corporate Debt Securities [Member]
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	194,858
Estimated Fair Value	$ 197,422

Investment Securities Narrative

Investment Securities Narrative (Details)	6 Months Ended
	Jun. 30, 2018USD ($)	Jun. 30, 2019USD ($)Security	Mar. 31, 2019USD ($)	Dec. 31, 2018USD ($)	Mar. 31, 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	$ 11,510,000	$ 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		$ 2,263,825,000
Available-for-sale Securities, Fair Value Disclosure		2,285,794,000		2,080,294,000
Residential Mortgage Backed Securities [Member]
Schedule of Investments [Line Items]
Amortized cost		331,566,000
Available-for-sale Securities, Fair Value Disclosure		329,275,000
US States and Political Subdivisions Debt Securities [Member]
Schedule of Investments [Line Items]
Amortized cost		307,911,000
Available-for-sale Securities, Fair Value Disclosure		316,334,000
Collateral Pledged [Member]
Schedule of Investments [Line Items]
Securities pledged as collateral		$ 857,100,000		$ 973,400,000

Loans and Allowance for Credi_3

Loans and Allowance for Credit Losses Summary Of Gross Loans (Details) - USD ($) $ in Thousands	Jun. 30, 2019	Dec. 31, 2018	Jun. 30, 2018
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases, gross of unearned income	$ 16,395,670	$ 16,192,439
Unearned income	(27,212)	(26,639)
Loans and leases, net of unearned income	16,368,458	16,165,800	$ 15,792,969
Real-estate - commercial mortgage
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases, gross of unearned income	6,497,973	6,434,285
Loans and leases, net of unearned income	6,497,973	6,434,285	6,304,475
Commercial - industrial, financial and agricultural
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases, gross of unearned income	4,365,248	4,404,548
Loans and leases, net of unearned income	4,365,248	4,404,548	4,264,602
Real estate - residential mortgage
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases, gross of unearned income	2,451,966	2,251,044
Loans and leases, net of unearned income	2,451,966	2,251,044	2,094,530
Real-estate - home equity
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases, gross of unearned income	1,386,974	1,452,137
Loans and leases, net of unearned income	1,386,974	1,452,137	1,491,395
Real estate - construction
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases, gross of unearned income	922,547	916,599
Loans and leases, net of unearned income	922,547	916,599	990,705
Consumer
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases, gross of unearned income	452,874	419,186
Loans and leases, net of unearned income	452,874	419,186	$ 360,315
Equipment lease financing and other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases, gross of unearned income	314,901	311,866
Overdrafts
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases, gross of unearned income	$ 3,187	$ 2,774

Loans and Allowance for Credi_4

Loans and Allowance for Credit Losses Allowance for Credit Losses (Details) - USD ($) $ in Thousands	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2017
Receivables [Abstract]
Allowance for loan and lease losses	$ 170,233	$ 162,109	$ 160,537	$ 156,050	$ 163,217	$ 169,910
Reserve for unfunded lending commitments	6,708		8,873
Allowance for credit losses	$ 176,941	$ 170,372	$ 169,410	$ 169,247	$ 176,019	$ 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		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Allowance for Loan and Lease Losses [Roll Forward]
Balance at beginning of period	$ 170,372	$ 176,019	$ 169,410	$ 176,084
Loans and leases charged off	(3,711)	(42,160)	(10,080)	(48,557)
Recoveries of loans and leases previously charged off	5,255	2,271	7,486	4,633
Net loans and leases recovered (charged off)	1,544	(39,889)	(2,594)	(43,924)
Provision for credit losses	5,025	33,117	10,125	37,087
Balance at end of period	$ 176,941	$ 169,247	$ 176,941	$ 169,247

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		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Accounts, Notes, Loans and Financing Receivable [Line Items]
Beginning Balance	$ 162,109	$ 163,217	$ 160,537	$ 169,910
Loans and leases charged off	(3,711)	(42,160)	(10,080)	(48,557)
Recoveries of loans and leases previously charged off	5,255	2,271	7,486	4,633
Net loans and leases recovered (charged off)	1,544	(39,889)	(2,594)	(43,924)
Provision for loan losses	6,580	32,722	12,290	30,064
Ending Balance	170,233	156,050	170,233	156,050
Provision for loan losses gross	(1,600)	395	(2,200)	7,000
Provision for credit losses	5,025	33,117	10,125	37,087
Real-estate - commercial mortgage
Accounts, Notes, Loans and Financing Receivable [Line Items]
Beginning Balance	51,946	58,717	52,889	58,793
Loans and leases charged off	(230)	(366)	(1,375)	(633)
Recoveries of loans and leases previously charged off	169	321	305	600
Net loans and leases recovered (charged off)	(61)	(45)	(1,070)	(33)
Provision for loan losses	2,974	(2,089)	3,040	(2,177)
Ending Balance	54,859	56,583	54,859	56,583
Commercial - industrial, financial and agricultural
Accounts, Notes, Loans and Financing Receivable [Line Items]
Beginning Balance	60,501	61,830	58,868	66,280
Loans and leases charged off	(1,895)	(38,632)	(4,682)	(42,637)
Recoveries of loans and leases previously charged off	2,680	541	3,923	1,616
Net loans and leases recovered (charged off)	785	(38,091)	(759)	(41,021)
Provision for loan losses	5,055	35,306	8,232	33,786
Ending Balance	66,341	59,045	66,341	59,045
Real-estate - home equity
Accounts, Notes, Loans and Financing Receivable [Line Items]
Beginning Balance	19,215	17,528	18,911	18,127
Loans and leases charged off	(206)	(816)	(425)	(1,224)
Recoveries of loans and leases previously charged off	223	271	420	477
Net loans and leases recovered (charged off)	17	(545)	(5)	(747)
Provision for loan losses	(251)	(736)	75	(1,133)
Ending Balance	18,981	16,247	18,981	16,247
Real estate - residential mortgage
Accounts, Notes, Loans and Financing Receivable [Line Items]
Beginning Balance	19,146	15,261	18,921	16,088
Loans and leases charged off	(134)	(483)	(789)	(645)
Recoveries of loans and leases previously charged off	211	96	343	203
Net loans and leases recovered (charged off)	77	(387)	(446)	(442)
Provision for loan losses	(331)	(370)	417	(1,142)
Ending Balance	18,892	14,504	18,892	14,504
Real estate - construction
Accounts, Notes, Loans and Financing Receivable [Line Items]
Beginning Balance	4,941	5,924	5,061	6,620
Loans and leases charged off	(3)	(606)	(98)	(764)
Recoveries of loans and leases previously charged off	1,245	444	1,329	750
Net loans and leases recovered (charged off)	1,242	(162)	1,231	(14)
Provision for loan losses	(1,255)	226	(1,364)	(618)
Ending Balance	4,928	5,988	4,928	5,988
Consumer
Accounts, Notes, Loans and Financing Receivable [Line Items]
Beginning Balance	3,319	1,903	3,217	2,045
Loans and leases charged off	(795)	(712)	(1,478)	(1,604)
Recoveries of loans and leases previously charged off	579	446	789	625
Net loans and leases recovered (charged off)	(216)	(266)	(689)	(979)
Provision for loan losses	260	62	835	633
Ending Balance	3,363	1,699	3,363	1,699
Equipment lease financing, other and overdrafts
Accounts, Notes, Loans and Financing Receivable [Line Items]
Beginning Balance	3,041	2,054	2,670	1,957
Loans and leases charged off	(448)	(545)	(1,233)	(1,050)
Recoveries of loans and leases previously charged off	148	152	377	362
Net loans and leases recovered (charged off)	(300)	(393)	(856)	(688)
Provision for loan losses	128	323	1,055	715
Ending Balance	$ 2,869	$ 1,984	$ 2,869	$ 1,984

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	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2017
Accounts, Notes, Loans and Financing Receivable [Line Items]
Collectively evaluated for impairment	$ 128,352			$ 117,120
Individually evaluated for impairment	41,881			38,930
Allowance for loan losses	170,233	$ 162,109	$ 160,537	156,050	$ 163,217	$ 169,910
Collectively evaluated for impairment	16,174,128			15,612,967
Individually evaluated for impairment	194,330			180,002
Loans and leases, net of unearned income	16,368,458		16,165,800	15,792,969
Real-estate - commercial mortgage
Accounts, Notes, Loans and Financing Receivable [Line Items]
Collectively evaluated for impairment	45,367			48,489
Individually evaluated for impairment	9,492			8,094
Allowance for loan losses	54,859	51,946	52,889	56,583	58,717	58,793
Collectively evaluated for impairment	6,438,080			6,252,747
Individually evaluated for impairment	59,893			51,728
Loans and leases, net of unearned income	6,497,973		6,434,285	6,304,475
Commercial - industrial, financial and agricultural
Accounts, Notes, Loans and Financing Receivable [Line Items]
Collectively evaluated for impairment	53,985			49,354
Individually evaluated for impairment	12,356			9,691
Allowance for loan losses	66,341	60,501	58,868	59,045	61,830	66,280
Collectively evaluated for impairment	4,313,666			4,209,786
Individually evaluated for impairment	51,582			54,816
Loans and leases, net of unearned income	4,365,248		4,404,548	4,264,602
Real-estate - home equity
Accounts, Notes, Loans and Financing Receivable [Line Items]
Collectively evaluated for impairment	8,463			5,093
Individually evaluated for impairment	10,518			11,154
Allowance for loan losses	18,981	19,215	18,911	16,247	17,528	18,127
Collectively evaluated for impairment	1,363,392			1,466,393
Individually evaluated for impairment	23,582			25,002
Loans and leases, net of unearned income	1,386,974		1,452,137	1,491,395
Real estate - residential mortgage
Accounts, Notes, Loans and Financing Receivable [Line Items]
Collectively evaluated for impairment	9,913			5,171
Individually evaluated for impairment	8,979			9,333
Allowance for loan losses	18,892	19,146	18,921	14,504	15,261	16,088
Collectively evaluated for impairment	2,414,627			2,055,206
Individually evaluated for impairment	37,339			39,324
Loans and leases, net of unearned income	2,451,966		2,251,044	2,094,530
Real estate - construction
Accounts, Notes, Loans and Financing Receivable [Line Items]
Collectively evaluated for impairment	4,399			5,338
Individually evaluated for impairment	529			650
Allowance for loan losses	4,928	4,941	5,061	5,988	5,924	6,620
Collectively evaluated for impairment	918,380			981,584
Individually evaluated for impairment	4,167			9,121
Loans and leases, net of unearned income	922,547		916,599	990,705
Consumer
Accounts, Notes, Loans and Financing Receivable [Line Items]
Collectively evaluated for impairment	3,356			1,691
Individually evaluated for impairment	7			8
Allowance for loan losses	3,363	3,319	3,217	1,699	1,903	2,045
Collectively evaluated for impairment	452,865			360,304
Individually evaluated for impairment	9			11
Loans and leases, net of unearned income	452,874		419,186	360,315
Equipment lease financing, other and overdrafts
Accounts, Notes, Loans and Financing Receivable [Line Items]
Collectively evaluated for impairment	2,869			1,984
Individually evaluated for impairment	0			0
Allowance for loan losses	2,869	$ 3,041	2,670	1,984	$ 2,054	$ 1,957
Collectively evaluated for impairment	273,118			286,947
Individually evaluated for impairment	17,758			0
Loans and leases, net of unearned income	$ 290,876		$ 288,001	$ 286,947

Loans and Allowance for Credi_8

Loans and Allowance for Credit Losses Total Impaired Loans by Class Segments (Details) - USD ($) $ in Thousands	Jun. 30, 2019	Dec. 31, 2018
Impaired Financing Receivables [Line Items]
Unpaid principal balance, with no related allowance	$ 90,879	$ 89,986
Unpaid principal balance, with related allowance	147,480	139,277
Unpaid Principal Balance	238,359	229,263
Recorded investment, with no related allowance	78,924	77,566
Recorded investment, with related allowance	115,406	112,612
Recorded Investment	194,330	190,178
Related Allowance	41,881	40,332
Real-estate - commercial mortgage
Impaired Financing Receivables [Line Items]
Unpaid principal balance, with no related allowance	32,406	25,095
Unpaid principal balance, with related allowance	40,435	29,005
Recorded investment, with no related allowance	30,574	23,481
Recorded investment, with related allowance	29,319	22,592
Related Allowance	9,492	7,255
Commercial
Impaired Financing Receivables [Line Items]
Unpaid principal balance, with no related allowance	29,696	33,493
Unpaid principal balance, with related allowance	38,010	37,706
Recorded investment, with no related allowance	23,588	26,585
Recorded investment, with related allowance	27,994	28,708
Related Allowance	12,356	12,513
Real estate - residential mortgage
Impaired Financing Receivables [Line Items]
Unpaid principal balance, with no related allowance	4,565	3,149
Unpaid principal balance, with related allowance	37,202	39,972
Recorded investment, with no related allowance	4,400	3,149
Recorded investment, with related allowance	32,939	35,621
Related Allowance	8,979	9,394
Construction
Impaired Financing Receivables [Line Items]
Unpaid principal balance, with no related allowance	6,454	8,980
Unpaid principal balance, with related allowance	5,112	5,984
Recorded investment, with no related allowance	2,604	5,083
Recorded investment, with related allowance	1,563	2,307
Related Allowance	529	793
Real-estate - home equity
Impaired Financing Receivables [Line Items]
Unpaid principal balance, with related allowance	26,712	26,599
Recorded investment, with related allowance	23,582	23,373
Related Allowance	10,518	10,370
Equipment lease financing, other and overdrafts
Impaired Financing Receivables [Line Items]
Unpaid principal balance, with no related allowance	17,758	19,269
Recorded investment, with no related allowance	17,758	19,268
Consumer
Impaired Financing Receivables [Line Items]
Unpaid principal balance, with related allowance	9	11
Recorded investment, with related allowance	9	11
Related Allowance	$ 7	$ 7

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		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Financing Receivable, Impaired [Line Items]
Impaired Financing Receivable, with No Related Allowance, Average Recorded Investment	$ 78,690	$ 72,169	$ 78,314	$ 73,148
Impaired Financing Receivable, with No Related Allowance, Interest Income, Accrual Method	155	190	302	373
Impaired Financing Receivable, with Related Allowance, Average Recorded Investment	113,019	115,125	112,882	115,421
Impaired Financing Receivable, with Related Allowance, Interest Income, Accrual Method	560	563	1,126	1,095
Impaired Financing Receivable, Average Recorded Investment	191,709	187,294	191,196	188,569
Impaired Financing Receivable, Interest Income, Accrual Method	715	753	1,428	1,468
Real-estate - commercial mortgage
Financing Receivable, Impaired [Line Items]
Impaired Financing Receivable, with No Related Allowance, Average Recorded Investment	27,738	27,127	26,319	25,713
Impaired Financing Receivable, with No Related Allowance, Interest Income, Accrual Method	100	97	197	180
Impaired Financing Receivable, with Related Allowance, Average Recorded Investment	24,528	25,419	23,883	25,578
Impaired Financing Receivable, with Related Allowance, Interest Income, Accrual Method	87	91	172	175
Commercial
Financing Receivable, Impaired [Line Items]
Impaired Financing Receivable, with No Related Allowance, Average Recorded Investment	25,238	33,644	25,686	35,612
Impaired Financing Receivable, with No Related Allowance, Interest Income, Accrual Method	32	69	62	142
Impaired Financing Receivable, with Related Allowance, Average Recorded Investment	28,485	26,120	28,558	25,471
Impaired Financing Receivable, with Related Allowance, Interest Income, Accrual Method	36	54	69	97
Real-estate - home equity
Financing Receivable, Impaired [Line Items]
Impaired Financing Receivable, with Related Allowance, Average Recorded Investment	23,706	24,907	23,595	24,835
Impaired Financing Receivable, with Related Allowance, Interest Income, Accrual Method	222	195	445	379
Real estate - residential mortgage
Financing Receivable, Impaired [Line Items]
Impaired Financing Receivable, with No Related Allowance, Average Recorded Investment	3,764	3,870	3,559	4,105
Impaired Financing Receivable, with No Related Allowance, Interest Income, Accrual Method	23	24	43	51
Impaired Financing Receivable, with Related Allowance, Average Recorded Investment	34,695	36,261	35,004	36,551
Impaired Financing Receivable, with Related Allowance, Interest Income, Accrual Method	215	223	440	444
Construction
Financing Receivable, Impaired [Line Items]
Impaired Financing Receivable, with No Related Allowance, Average Recorded Investment	3,814	7,528	4,237	7,718
Impaired Financing Receivable, with No Related Allowance, Interest Income, Accrual Method	0	0	0	0
Impaired Financing Receivable, with Related Allowance, Average Recorded Investment	1,595	2,400	1,832	2,966
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 No Related Allowance, Average Recorded Investment	18,136	0	18,513
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	10	18	10	20
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	Jun. 30, 2019	Dec. 31, 2018
Internal risk ratings for loans by segment [Line Items]
Loans and Leases Receivable, Gross	$ 16,395,670	$ 16,192,439
Real-estate - commercial mortgage
Internal risk ratings for loans by segment [Line Items]
Loans and Leases Receivable, Gross	6,497,973	6,434,285
Real-estate - commercial mortgage | Pass
Internal risk ratings for loans by segment [Line Items]
Loans and Leases Receivable, Gross	6,173,883	6,129,463
Real-estate - commercial mortgage | Special Mention
Internal risk ratings for loans by segment [Line Items]
Loans and Leases Receivable, Gross	162,425	170,827
Real-estate - commercial mortgage | 43465
Internal risk ratings for loans by segment [Line Items]
Loans and Leases Receivable, Gross	161,665	133,995
Commercial
Internal risk ratings for loans by segment [Line Items]
Loans and Leases Receivable, Gross	4,189,596	4,224,980
Commercial | Pass
Internal risk ratings for loans by segment [Line Items]
Loans and Leases Receivable, Gross	3,835,171	3,902,484
Commercial | Special Mention
Internal risk ratings for loans by segment [Line Items]
Loans and Leases Receivable, Gross	182,569	193,470
Commercial | 43465
Internal risk ratings for loans by segment [Line Items]
Loans and Leases Receivable, Gross	171,856	129,026
Commercial - unsecured
Internal risk ratings for loans by segment [Line Items]
Loans and Leases Receivable, Gross	175,652	179,568
Commercial - unsecured | Pass
Internal risk ratings for loans by segment [Line Items]
Loans and Leases Receivable, Gross	168,311	171,589
Commercial - unsecured | Special Mention
Internal risk ratings for loans by segment [Line Items]
Loans and Leases Receivable, Gross	4,972	4,016
Commercial - unsecured | 43465
Internal risk ratings for loans by segment [Line Items]
Loans and Leases Receivable, Gross	2,369	3,963
Commercial - industrial, financial and agricultural
Internal risk ratings for loans by segment [Line Items]
Loans and Leases Receivable, Gross	4,365,248	4,404,548
Commercial - industrial, financial and agricultural | Pass
Internal risk ratings for loans by segment [Line Items]
Loans and Leases Receivable, Gross	4,003,482	4,074,073
Commercial - industrial, financial and agricultural | Special Mention
Internal risk ratings for loans by segment [Line Items]
Loans and Leases Receivable, Gross	187,541	197,486
Commercial - industrial, financial and agricultural | 43465
Internal risk ratings for loans by segment [Line Items]
Loans and Leases Receivable, Gross	174,225	132,989
Construction
Internal risk ratings for loans by segment [Line Items]
Loans and Leases Receivable, Gross	116,209	117,872
Construction | Pass
Internal risk ratings for loans by segment [Line Items]
Loans and Leases Receivable, Gross	109,168	104,079
Construction | Special Mention
Internal risk ratings for loans by segment [Line Items]
Loans and Leases Receivable, Gross	3,082	6,912
Construction | 43465
Internal risk ratings for loans by segment [Line Items]
Loans and Leases Receivable, Gross	3,959	6,881
Construction - commercial
Internal risk ratings for loans by segment [Line Items]
Loans and Leases Receivable, Gross	729,484	726,726
Construction - commercial | Pass
Internal risk ratings for loans by segment [Line Items]
Loans and Leases Receivable, Gross	725,556	723,030
Construction - commercial | Special Mention
Internal risk ratings for loans by segment [Line Items]
Loans and Leases Receivable, Gross	731	1,163
Construction - commercial | 43465
Internal risk ratings for loans by segment [Line Items]
Loans and Leases Receivable, Gross	3,197	2,533
Construction - Commercial and Commercial Residential
Internal risk ratings for loans by segment [Line Items]
Loans and Leases Receivable, Gross	845,693	844,598
Construction - Commercial and Commercial Residential | Pass
Internal risk ratings for loans by segment [Line Items]
Loans and Leases Receivable, Gross	834,724	827,109
Construction - Commercial and Commercial Residential | Special Mention
Internal risk ratings for loans by segment [Line Items]
Loans and Leases Receivable, Gross	3,813	8,075
Construction - Commercial and Commercial Residential | 43465
Internal risk ratings for loans by segment [Line Items]
Loans and Leases Receivable, Gross	7,156	9,414
Commercial Loans, Commerical Mortgages, Constructions Loans
Internal risk ratings for loans by segment [Line Items]
Loans and Leases Receivable, Gross	$ 11,708,914	$ 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	$ 11,012,089	$ 11,030,645
Percentage of total loans rated	94.10%	94.40%
Commercial Loans, Commerical Mortgages, Constructions Loans | Special Mention
Internal risk ratings for loans by segment [Line Items]
Loans and Leases Receivable, Gross	$ 353,779	$ 376,388
Percentage of total loans rated	3.00%	3.20%
Commercial Loans, Commerical Mortgages, Constructions Loans | 43465
Internal risk ratings for loans by segment [Line Items]
Loans and Leases Receivable, Gross	$ 343,046	$ 276,398
Percentage of total loans rated	2.90%	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	6 Months Ended
	Jun. 30, 2019USD ($)day	Dec. 31, 2018USD ($)	Jun. 30, 2018USD ($)
Financing Receivable, Impaired [Line Items]
Loans and leases, net of unearned income	$ 16,368,458	$ 16,165,800	$ 15,792,969
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	$ 1,386,974	1,452,137	1,491,395
Real-estate - home equity | Performing
Financing Receivable, Impaired [Line Items]
Loans and leases, net of unearned income	1,363,344	1,431,666
Real-estate - home equity | Delinquent
Financing Receivable, Impaired [Line Items]
Loans and leases, net of unearned income	11,634	10,702
Real-estate - home equity | Non-performing
Financing Receivable, Impaired [Line Items]
Loans and leases, net of unearned income	11,996	9,769
Real estate - residential mortgage
Financing Receivable, Impaired [Line Items]
Loans and leases, net of unearned income	2,451,966	2,251,044	2,094,530
Real estate - residential mortgage | Performing
Financing Receivable, Impaired [Line Items]
Loans and leases, net of unearned income	2,398,432	2,202,955
Real estate - residential mortgage | Delinquent
Financing Receivable, Impaired [Line Items]
Loans and leases, net of unearned income	31,876	28,988
Real estate - residential mortgage | Non-performing
Financing Receivable, Impaired [Line Items]
Loans and leases, net of unearned income	21,658	19,101
Construction - other
Financing Receivable, Impaired [Line Items]
Loans and leases, net of unearned income	76,854	72,001
Construction - other | Performing
Financing Receivable, Impaired [Line Items]
Loans and leases, net of unearned income	76,116	71,511
Construction - other | Delinquent
Financing Receivable, Impaired [Line Items]
Loans and leases, net of unearned income	549	0
Construction - other | Non-performing
Financing Receivable, Impaired [Line Items]
Loans and leases, net of unearned income	189	490
Consumer
Financing Receivable, Impaired [Line Items]
Loans and leases, net of unearned income	58,713	56,033
Consumer | Performing
Financing Receivable, Impaired [Line Items]
Loans and leases, net of unearned income	58,295	55,629
Consumer | Delinquent
Financing Receivable, Impaired [Line Items]
Loans and leases, net of unearned income	295	338
Consumer | Non-performing
Financing Receivable, Impaired [Line Items]
Loans and leases, net of unearned income	123	66
Consumer - indirect
Financing Receivable, Impaired [Line Items]
Loans and leases, net of unearned income	394,161	363,153
Consumer - indirect | Performing
Financing Receivable, Impaired [Line Items]
Loans and leases, net of unearned income	390,394	359,405
Consumer - indirect | Delinquent
Financing Receivable, Impaired [Line Items]
Loans and leases, net of unearned income	3,508	3,405
Consumer - indirect | Non-performing
Financing Receivable, Impaired [Line Items]
Loans and leases, net of unearned income	259	343
Consumer
Financing Receivable, Impaired [Line Items]
Loans and leases, net of unearned income	452,874	419,186	360,315
Consumer | Performing
Financing Receivable, Impaired [Line Items]
Loans and leases, net of unearned income	448,689	415,034
Consumer | Delinquent
Financing Receivable, Impaired [Line Items]
Loans and leases, net of unearned income	3,803	3,743
Consumer | Non-performing
Financing Receivable, Impaired [Line Items]
Loans and leases, net of unearned income	382	409
Equipment lease financing, other and overdrafts
Financing Receivable, Impaired [Line Items]
Loans and leases, net of unearned income	290,876	288,001	$ 286,947
Equipment lease financing, other and overdrafts | Performing
Financing Receivable, Impaired [Line Items]
Loans and leases, net of unearned income	271,130	267,112
Equipment lease financing, other and overdrafts | Delinquent
Financing Receivable, Impaired [Line Items]
Loans and leases, net of unearned income	1,808	1,302
Equipment lease financing, other and overdrafts | Non-performing
Financing Receivable, Impaired [Line Items]
Loans and leases, net of unearned income	17,938	19,587
Real Estate, Consumer, Leasing And Other Loans [Member] [Member]
Financing Receivable, Impaired [Line Items]
Loans and leases, net of unearned income	4,659,544	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	4,557,711	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	49,670	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	$ 52,163	$ 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	97.80%	97.90%
Commercial Loans, Commerical Mortgages, Constructions Loans | Delinquent
Financing Receivable, Impaired [Line Items]
% of Total	1.10%	1.00%
Commercial Loans, Commerical Mortgages, Constructions Loans | Non-performing
Financing Receivable, Impaired [Line Items]
% of Total	1.10%	1.10%

Loans and Allowance for Cred_12

Loans and Allowance for Credit Losses Non-Performing Assets (Details) - USD ($) $ in Thousands	Jun. 30, 2019	Dec. 31, 2018
Receivables [Abstract]
Non-accrual loans and leases	$ 133,118	$ 128,572
Loans and leases 90 days or more past due and still accruing	14,598	11,106
Total non-performing loans and leases	147,716	139,678
Other real estate owned (OREO)	7,241	10,518
Total non-performing assets	$ 154,957	$ 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	Jun. 30, 2019	Dec. 31, 2018	Jun. 30, 2018
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	$ 228,091	$ 208,371
≥ 90 Days Past Due and Accruing	14,598	11,106
Non- accrual	133,118	128,572
Current	16,140,367	15,957,429
Loans and leases, net of unearned income	16,368,458	16,165,800	$ 15,792,969
Financing Receivables, 30 to 59 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	67,112	53,640
Financing Receivables, 60 to 89 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	13,263	15,053
Financing Receivables, Equal to Greater than 90 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	147,716	139,678
Real-estate - commercial mortgage
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	62,529	45,859
≥ 90 Days Past Due and Accruing	637	1,765
Non- accrual	43,213	30,388
Current	6,435,444	6,388,426
Loans and leases, net of unearned income	6,497,973	6,434,285	6,304,475
Real-estate - commercial mortgage | Financing Receivables, 30 to 59 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	16,620	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	2,059	1,500
Real-estate - commercial mortgage | Financing Receivables, Equal to Greater than 90 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	43,850	32,153
Commercial
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	56,939	56,532
≥ 90 Days Past Due and Accruing	1,422	1,068
Non- accrual	45,114	49,299
Current	4,132,657	4,168,448
Loans and leases, net of unearned income	4,189,596	4,224,980
Commercial | Financing Receivables, 30 to 59 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	8,480	5,227
Commercial | Financing Receivables, 60 to 89 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	1,923	938
Commercial | Financing Receivables, Equal to Greater than 90 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	46,536	50,367
Commercial - unsecured
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	1,451	2,500
≥ 90 Days Past Due and Accruing	0	51
Non- accrual	723	851
Current	174,201	177,068
Loans and leases, net of unearned income	175,652	179,568
Commercial - unsecured | Financing Receivables, 30 to 59 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	592	1,598
Commercial - unsecured | Financing Receivables, 60 to 89 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	136	0
Commercial - unsecured | Financing Receivables, Equal to Greater than 90 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	723	902
Commercial - industrial, financial and agricultural
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	58,390	59,032
≥ 90 Days Past Due and Accruing	1,422	1,119
Non- accrual	45,837	50,150
Current	4,306,858	4,345,516
Loans and leases, net of unearned income	4,365,248	4,404,548	4,264,602
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	9,072	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	2,059	938
Commercial - industrial, financial and agricultural | Financing Receivables, Equal to Greater than 90 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	47,259	51,269
Real-estate - home equity
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	23,630	20,471
≥ 90 Days Past Due and Accruing	4,803	3,061
Non- accrual	7,193	6,708
Current	1,363,344	1,431,666
Loans and leases, net of unearned income	1,386,974	1,452,137	1,491,395
Real-estate - home equity | Financing Receivables, 30 to 59 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	9,370	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	2,264	3,558
Real-estate - home equity | Financing Receivables, Equal to Greater than 90 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	11,996	9,769
Real estate - residential mortgage
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	53,534	48,089
≥ 90 Days Past Due and Accruing	6,708	4,433
Non- accrual	14,950	14,668
Current	2,398,432	2,202,955
Loans and leases, net of unearned income	2,451,966	2,251,044	2,094,530
Real estate - residential mortgage | Financing Receivables, 30 to 59 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	26,135	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	5,741	8,192
Real estate - residential mortgage | Financing Receivables, Equal to Greater than 90 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	21,658	19,101
Construction
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	3,959	9,370
≥ 90 Days Past Due and Accruing	0	0
Non- accrual	3,959	6,881
Current	112,250	108,502
Loans and leases, net of unearned income	116,209	117,872
Construction | Financing Receivables, 30 to 59 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	0	2,489
Construction | Financing Receivables, 60 to 89 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	0	0
Construction | Financing Receivables, Equal to Greater than 90 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	3,959	6,881
Construction - commercial
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	1,380	19
≥ 90 Days Past Due and Accruing	466	0
Non- accrual	19	19
Current	728,104	726,707
Loans and leases, net of unearned income	729,484	726,726
Construction - commercial | Financing Receivables, 30 to 59 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	895	0
Construction - commercial | Financing Receivables, 60 to 89 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	0	0
Construction - commercial | Financing Receivables, Equal to Greater than 90 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	485	19
Construction - other
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	738	490
≥ 90 Days Past Due and Accruing	0	0
Non- accrual	189	490
Current	76,116	71,511
Loans and leases, net of unearned income	76,854	72,001
Construction - other | Financing Receivables, 30 to 59 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	549	0
Construction - other | Financing Receivables, 60 to 89 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	0	0
Construction - other | Financing Receivables, Equal to Greater than 90 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	189	490
Real estate - construction
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	6,077	9,879
≥ 90 Days Past Due and Accruing	466	0
Non- accrual	4,167	7,390
Current	916,470	906,720
Loans and leases, net of unearned income	922,547	916,599	990,705
Real estate - construction | Financing Receivables, 30 to 59 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	1,444	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	0	0
Real estate - construction | Financing Receivables, Equal to Greater than 90 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	4,633	7,390
Consumer
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	418	404
≥ 90 Days Past Due and Accruing	123	66
Non- accrual	0	0
Current	58,295	55,629
Loans and leases, net of unearned income	58,713	56,033
Consumer | Financing Receivables, 30 to 59 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	205	267
Consumer | Financing Receivables, 60 to 89 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	90	71
Consumer | Financing Receivables, Equal to Greater than 90 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	123	66
Consumer - indirect
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	3,767	3,748
≥ 90 Days Past Due and Accruing	259	343
Non- accrual	0	0
Current	390,394	359,405
Loans and leases, net of unearned income	394,161	363,153
Consumer - indirect | Financing Receivables, 30 to 59 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	2,901	2,908
Consumer - indirect | Financing Receivables, 60 to 89 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	607	497
Consumer - indirect | Financing Receivables, Equal to Greater than 90 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	259	343
Consumer
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	4,185	4,152
≥ 90 Days Past Due and Accruing	382	409
Non- accrual	0	0
Current	448,689	415,034
Loans and leases, net of unearned income	452,874	419,186	360,315
Consumer | Financing Receivables, 30 to 59 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	3,106	3,175
Consumer | Financing Receivables, 60 to 89 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	697	568
Consumer | Financing Receivables, Equal to Greater than 90 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	382	409
Equipment lease financing, other and overdrafts
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	19,746	20,889
≥ 90 Days Past Due and Accruing	180	319
Non- accrual	17,758	19,268
Current	271,130	267,112
Loans and leases, net of unearned income	290,876	288,001	$ 286,947
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	1,365	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	443	297
Equipment lease financing, other and overdrafts | Financing Receivables, Equal to Greater than 90 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	$ 17,938	$ 19,587

Loans and Allowance for Cred_14

Loans and Allowance for Credit Losses Loans Modified Under Troubled Debt Restructurings (Details) - USD ($) $ in Thousands	Jun. 30, 2019	Dec. 31, 2018
Financing Receivable, Modifications [Line Items]
Total Accruing Troubled Debt Restructurings	$ 61,211	$ 61,605
Non-accrual TDRs (1)	29,958	28,659
Total TDRs	91,169	90,264
Residential Mortgage [Member]
Financing Receivable, Modifications [Line Items]
Total Accruing Troubled Debt Restructurings	22,389	24,102
Commercial Real Estate [Member]
Financing Receivable, Modifications [Line Items]
Total Accruing Troubled Debt Restructurings	16,680	15,685
Real-estate - home equity
Financing Receivable, Modifications [Line Items]
Total Accruing Troubled Debt Restructurings	16,389	16,665
Commercial
Financing Receivable, Modifications [Line Items]
Total Accruing Troubled Debt Restructurings	5,744	5,143
Consumer
Financing Receivable, Modifications [Line Items]
Total Accruing Troubled Debt Restructurings	$ 9	$ 10

Loans and Allowance for Cred_15

Loans and Allowance for Credit Losses Troubled Debt Restructuring Modification (Details) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2019USD ($)loans	Jun. 30, 2018USD ($)loans	Jun. 30, 2019USD ($)loans	Jun. 30, 2018USD ($)loans
Financing Receivable, Modifications [Line Items]
Number of Loans | loans	29	31	49	60
Post-Modification Recorded Investment | $	$ 4,012	$ 1,789	$ 8,218	$ 12,537
Commercial
Financing Receivable, Modifications [Line Items]
Number of Loans | loans	6	2	10	11
Post-Modification Recorded Investment | $	$ 2,371	$ 53	$ 4,831	$ 9,412
Real-estate - home equity
Financing Receivable, Modifications [Line Items]
Number of Loans | loans	22	28	34	47
Post-Modification Recorded Investment | $	$ 1,125	$ 1,659	$ 1,954	$ 3,043
Residential Mortgage [Member]
Financing Receivable, Modifications [Line Items]
Number of Loans | loans	1	1	5	2
Post-Modification Recorded Investment | $	$ 516	$ 77	$ 1,433	$ 82

Loans and Allowance for Cred_16

Loans and Allowance for Credit Losses TDRs by Class Segment (Details) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2019USD ($)loans	Jun. 30, 2018USD ($)loans	Jun. 30, 2019USD ($)loans	Jun. 30, 2018USD ($)loans
Financing Receivable, Modifications [Line Items]
Post-Modification Recorded Investment	$ 4,012	$ 1,789	$ 8,218	$ 12,537
Number of Loans | loans	29	31	49	60
Number of Loans | loans			22	43
Recorded Investment			$ 3,491	$ 3,140
Real estate - residential mortgage
Financing Receivable, Modifications [Line Items]
Number of Loans | loans			2	8
Recorded Investment			$ 299	$ 863
Real-estate - commercial mortgage
Financing Receivable, Modifications [Line Items]
Number of Loans			0	1
Recorded Investment			$ 0	$ 176
Real-estate - home equity
Financing Receivable, Modifications [Line Items]
Post-Modification Recorded Investment	$ 1,125	$ 1,659	$ 1,954	$ 3,043
Number of Loans | loans	22	28	34	47
Number of Loans | loans			16	29
Recorded Investment			$ 890	$ 1,955
Commercial
Financing Receivable, Modifications [Line Items]
Post-Modification Recorded Investment	$ 2,371	$ 53	$ 4,831	$ 9,412
Number of Loans | loans	6	2	10	11
Number of Loans | loans			4	5
Recorded Investment			$ 2,302	$ 146

Loans and Allowance for Cred_17

Loans and Allowance for Credit Losses Narrative (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018	Dec. 31, 2018
Accounts, Notes, Loans and Financing Receivable [Line Items]
Provision for credit losses	$ 5,025	$ 33,117	$ 10,125	$ 37,087
Loans charged off	$ 3,711	$ 42,160	$ 10,080	$ 48,557
Impaired loans with principal balances approximately in percentage			84.00%	89.00%
Loan to value ratio in the Corporation's policy	70.00%		70.00%
Recorded investment, with no related allowance	$ 78,924		$ 78,924		$ 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		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018	Dec. 31, 2018
Amortized Cost:
Fair value of MSRs	$ 44,900		$ 44,900		$ 50,200
Residential Mortgage [Member]
Amortized Cost:
Balance at beginning of period	38,504	$ 37,748	38,573	$ 37,663
Originations of mortgage servicing rights	1,861	1,746	3,086	3,229
Amortization	(1,539)	(1,600)	(2,833)	(2,998)
Balance at end of period	$ 38,826	$ 37,894	$ 38,826	$ 37,894

Leases Narrative (Details)

Leases Narrative (Details) - USD ($) $ in Thousands	6 Months Ended
	Jun. 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	6 Months Ended
	Jun. 30, 2019USD ($)	Jun. 30, 2019USD ($)
Leases [Abstract]
Operating lease expense	$ 4,796	$ 9,486
Variable lease expense	761	1,370
Sublease income	(168)	(371)
Total lease expense	5,389	10,485
ROU assets	104,046	104,046
Lease liabilities	$ 110,987	$ 110,987
Weighted-average remaining lease term	8 years 4 months 24 days	8 years 4 months 24 days
Weighted-average discount rate	3.06%	3.06%
Cash paid for amounts included in the measurement of lease liabilities		$ 9,269
ROU assets obtained in exchange for lease obligations		$ 111,995

Leases Payment Obligations (Det

Leases Payment Obligations (Details) $ in Thousands	Jun. 30, 2019USD ($)
Operating Lease Liabilities, Payments Due [Abstract]
For the six months ending December 31, 2019	$ 9,390
2020	18,607
2021	17,400
2022	16,052
2023	13,804
Thereafter	52,664
Total lease payments	127,917
Less: imputed interest	(16,930)
Present value of lease liabilities	$ 110,987

Derivative Financial Instrume_3

Derivative Financial Instruments Narrative (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018	Dec. 31, 2018
Derivative [Line Items]
Assets	$ 21,308,670		$ 21,308,670		$ 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	304	$ 324	325	$ 127
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	Jun. 30, 2019	Dec. 31, 2018
Derivative [Line Items]
Derivative asset, fair value	$ (138,494)	$ (61,688)
Derivative liability, fair value	(76,325)	(47,237)
Derivative asset (liability), net	62,514	14,378
Interest Rate Lock Commitments [Member]
Derivative [Line Items]
Derivative asset, notional amount	184,657	101,700
Derivative liability, notional amount	3,090	1,646
Derivative asset, fair value	(2,118)	(1,148)
Derivative liability, fair value	(21)	(12)
Derivative asset (liability), net	2,097	1,136
Forward Commitments [Member]
Derivative [Line Items]
Derivative asset, notional amount	40,334	1,540
Derivative liability, notional amount	111,530	83,562
Derivative asset, fair value	(221)	(3)
Derivative liability, fair value	(1,631)	(1,066)
Derivative asset (liability), net	(1,410)	(1,063)
Interest Rate Swap with Customer [Member]
Derivative [Line Items]
Derivative asset, notional amount	2,514,261	1,185,144
Derivative liability, notional amount	292,200	1,386,046
Derivative asset, fair value	(136,298)	(33,258)
Derivative liability, fair value	(1,716)	(30,769)
Derivative asset (liability), net	134,582	2,489
Interest Rate Swap With Counterparty [Member]
Derivative [Line Items]
Derivative asset, notional amount	292,200	1,386,046
Derivative liability, notional amount	2,514,261	1,185,144
Derivative asset, fair value	(1,716)	(28,143)
Derivative liability, fair value	(74,516)	(16,338)
Derivative asset (liability), net	(72,800)	11,805
Centrally Cleared Interest Rate Swap with Counterparty [Member]
Derivative [Line Items]
Variation margin	61,800
Variation margin		14,300
Foreign Exchange Contracts With Customer [Member]
Derivative [Line Items]
Derivative asset, notional amount	6,423	5,881
Derivative liability, notional amount	6,643	9,690
Derivative asset, fair value	(105)	(105)
Derivative liability, fair value	(186)	(251)
Derivative asset (liability), net	(81)	(146)
Foreign Exchange Contracts With Correspondent Banks [Member]
Derivative [Line Items]
Derivative asset, notional amount	8,750	9,220
Derivative liability, notional amount	6,590	6,831
Derivative asset, fair value	(226)	(287)
Derivative liability, fair value	(100)	(130)
Derivative asset (liability), net	$ 126	$ 157

Derivative Financial Instrume_5

Derivative Financial Instruments Fair Value Gains and Losses on Derivative Financial Instruments (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Derivative [Line Items]
Net fair value gains (losses) on derivative financial instruments	$ 30,841	$ (1,947)	$ 48,136	$ (10,325)
Interest rate lock with customers [Member]
Derivative [Line Items]
Net fair value gains (losses) on derivative financial instruments	355	231	961	360
Forward Commitments [Member]
Derivative [Line Items]
Net fair value gains (losses) on derivative financial instruments	(403)	(541)	(347)	(315)
Interest Rate Swap with Customer [Member]
Derivative [Line Items]
Net fair value gains (losses) on derivative financial instruments	81,576	(12,375)	132,093	(55,017)
Interest Rate Swap with Counterparty [Member]
Derivative [Line Items]
Net fair value gains (losses) on derivative financial instruments	(50,673)	10,811	(84,605)	44,625
Foreign Exchange Contracts With Customer [Member]
Derivative [Line Items]
Net fair value gains (losses) on derivative financial instruments	(154)	(23)	65	(16)
Foreign Exchange Contracts With Correspondent Banks [Member]
Derivative [Line Items]
Net fair value gains (losses) on derivative financial instruments	140	(50)	(31)	38
Centrally Cleared Interest Rate Swap with Counterparty [Member]
Derivative [Line Items]
Net fair value gains (losses) on derivative financial instruments	$ (31,200)	$ 1,600	$ (47,500)	$ 10,400

Derivative Financial Instrume_6

Derivative Financial Instruments Summary of Mortgage Loans Held For Sale (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018	Dec. 31, 2018
Fair Value, Option, Quantitative Disclosures [Line Items]
Loans Held-for-sale, Mortgages	$ 45,754		$ 45,754		$ 27,099
Mortgage Loans Held For Sale [Member]
Fair Value, Option, Quantitative Disclosures [Line Items]
Fair Value, Option, Changes in Fair Value, Gain (Loss)	304	$ 324	325	$ 127
Cost [Member] | Mortgage Loans Held For Sale [Member]
Fair Value, Option, Quantitative Disclosures [Line Items]
Loans Held-for-sale, Mortgages	44,737		44,737		26,407
Fair value [Member] | Mortgage Loans Held For Sale [Member]
Fair Value, Option, Quantitative Disclosures [Line Items]
Loans Held-for-sale, Mortgages	$ 45,754		$ 45,754		$ 27,099

Derivative Financial Instrume_7

Derivative Financial Instruments Offsetting Derivative Assets and Liabilities (Details) - USD ($) $ in Thousands	Jun. 30, 2019	Dec. 31, 2018
Offsetting Assets [Line Items]
Derivative asset, fair value	$ 138,494	$ 61,688
Derivative, Collateral, Obligation to Return Securities	2,034	13,085
Derivative, Collateral, Obligation to Return Cash	0	(23,270)
Net Amount	136,460	25,333
Derivative liability, gross liability	76,325	47,237
Derivative liability, Collateral, Right to Reclaim Securities	(2,034)	(22,916)
Derivative liability, Collateral, Right to Reclaim Cash	(74,291)	(22,786)
Derivative liability, Net Amount	0	1,535
Interest Rate Swap [Member]
Offsetting Assets [Line Items]
Derivative asset, fair value	138,275	61,401
Derivative, Collateral, Obligation to Return Securities	1,941	12,955
Derivative, Collateral, Obligation to Return Cash	0	(23,270)
Net Amount	136,334	25,176
Derivative liability, gross liability	76,232	47,107
Derivative liability, Collateral, Right to Reclaim Securities	(1,941)	(22,786)
Derivative liability, Collateral, Right to Reclaim Cash	(74,291)	(22,786)
Derivative liability, Net Amount	0	1,535
Foreign Exchange Contract [Member]
Offsetting Assets [Line Items]
Derivative asset, fair value	219	287
Derivative, Collateral, Obligation to Return Securities	93	130
Derivative, Collateral, Obligation to Return Cash	0	0
Net Amount	126	157
Derivative liability, gross liability	93	130
Derivative liability, Collateral, Right to Reclaim Securities	(93)	(130)
Derivative liability, Collateral, Right to Reclaim Cash	0	0
Derivative liability, Net Amount	$ 0	$ 0

Tax Credit Investments (Details

Tax Credit Investments (Details) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018	Dec. 31, 2018
Income Tax Disclosure [Abstract]
Affordable housing tax credit investment, net	$ 161,986		$ 161,986		$ 170,401
Other tax credit investments, net	72,786		72,786		72,584
Total TCIs, net	234,772		234,772		242,985
Unfunded affordable housing tax credit commitments	18,542		18,542		23,196
Other tax credit investment liabilities	61,483		61,483		59,823
Total unfunded tax credit investment commitments and liabilities	80,025		80,025		$ 83,019
Affordable housing tax credits and other tax benefits	(7,575,000)	$ (7,543,000)	(15,150,000)	$ (15,087,000)
Other tax credit investment credits and tax benefits	(1,135,000)	(1,597,000)	(2,271,000)	(3,193,000)
Amortization of affordable housing investments, net of tax benefit	5,494,000	5,319,000	10,989,000	10,917,000
Deferred tax expense	239,000	336,000	477,000	671,000
Total reduction in income tax expense	(2,977,000)	(3,485,000)	(5,955,000)	(6,692,000)
Affordable housing tax credits investment	823,000	839,000	1,645,000	1,678,000
Other tax credit investment amortization	669,000	798,000	1,338,000	1,596,000
Total amortization of TCIs	$ 1,492,000	$ 1,637,000	$ 2,983,000	$ 3,274,000

Accumulated Other Comprehensi_3

Accumulated Other Comprehensive Income Changes in Other Comprehensive Income (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Equity [Abstract]
Unrealized gain on securities, before tax amount	$ 31,994	$ (8,397)	$ 58,056	$ (43,388)
Unrealized gain on securities, tax effect	(7,077)	1,766	(12,841)	9,113
Unrealized gain on securities, net of tax amount	24,917	(6,631)	45,215	(34,275)
Reclassification adjustment for securities gains included in net income, before tax amount	(176)	(4)	(241)	(23)
Reclassification adjustment for securities gains included in net income, tax effect	39	1	53	4
Reclassification adjustment for securities gains included in net income, net of tax amount	(137)	(3)	(188)	(19)
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	1,311
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	(290)
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	1,021	0	1,995	0
Other Comprehensive Income (Loss), Reclassification Adjustment From AOCI For Investment Transferred From Available-For-Sale To Held-To-Maturity, Before Tax			2,563
Other Comprehensive Income (Loss), Reclassification Adjustment From AOCI For Investment Transferred From Available-For-Sale To Held-To-Maturity, Tax			(568)
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI for Investment Transferred from Available-for-sale to Held-to-maturity, after Tax			1,995
Non-credit related unrealized gains on other-than-temporarily impaired debt securities, before tax amount	(770)	9	(875)	294
Non-credit related unrealized gains on other-than-temporarily impaired debt securities, tax effect	170	(1)	193	(62)
Non-credit related unrealized gains on other-than-temporarily impaired debt securities, net of tax amount	(600)	8	(682)	232
Amortization of net unrecognized pension and postretirement items, before tax amount	353	683	727	1,113
Amortization of net unrecognized pension and postretirement items, tax effect	(78)	(143)	(161)	(234)
Amortization of net unrecognized pension and postretirement items, net of tax amount	275	540	566	879
Total Other Comprehensive Income, Before Tax Amount	32,712	(7,709)	60,230	(42,004)
Total Other Comprehensive Income, Tax Effect	(7,236)	1,623	(13,324)	8,821
Other Comprehensive Income (Loss)	$ 25,476	$ (6,086)	$ 46,906	$ (33,183)

Accumulated Other Comprehensi_4

Accumulated Other Comprehensive Income Components of Other Comprehensive Income (Details) - USD ($) $ in Thousands		3 Months Ended		6 Months Ended
		Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Accumulated Other Comprehensive Income [Roll Forward]
Beginning Balance		$ 2,301,019	$ 2,235,493	$ 2,247,573	$ 2,229,857
Amortization of net unrealized losses on AFS securities transferred to HTM				1,995
Ending Balance		2,308,798	2,245,785	2,308,798	2,245,785
Unrealized Gains (Losses) on Investment Securities Not Other-Than-Temporarily Impaired
Accumulated Other Comprehensive Income [Roll Forward]
Beginning Balance		(23,433)	(50,056)	(44,654)	(18,509)
Other comprehensive income before reclassifications		24,917	(6,631)	45,215	(34,275)
Amounts reclassified from accumulated other comprehensive income (loss)		(137)	(3)	(188)	(19)
Amortization of net unrealized losses on AFS securities transferred to HTM				1,995
Reclassification of stranded tax effects					(3,887)
Ending Balance		2,368	(56,690)	2,368	(56,690)
Unrealized Non-Credit Gains (Losses) on Other-Than-Temporarily Impaired Debt Securities
Accumulated Other Comprehensive Income [Roll Forward]
Beginning Balance		598	682	680	458
Other comprehensive income before reclassifications		(600)	8	(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
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		(14,798)	(17,798)	(15,089)	(14,923)
Other comprehensive income before reclassifications		0	0	0	0
Amounts reclassified from accumulated other comprehensive income (loss)		275	540	566	879
Amortization of net unrealized losses on AFS securities transferred to HTM				0
Reclassification of stranded tax effects					(3,214)
Ending Balance		(14,523)	(17,258)	(14,523)	(17,258)
Total
Accumulated Other Comprehensive Income [Roll Forward]
Beginning Balance		(37,633)	(67,172)	(59,063)	(32,974)
Other comprehensive income before reclassifications		24,317	(6,623)	44,533	(34,043)
Amounts reclassified from accumulated other comprehensive income (loss)		138	537	378	860
Amortization of net unrealized losses on AFS securities transferred to HTM				1,995
Reclassification of stranded tax effects	[1]				(7,101)
Ending Balance		(12,157)	$ (73,258)	$ (12,157)	$ (73,258)
Reclassification out of Accumulated Other Comprehensive Income
Accumulated Other Comprehensive Income [Roll Forward]
Amounts reclassified from accumulated other comprehensive income (loss)		1,021
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)		1,021
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
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
[1]	(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	Jun. 30, 2019	Dec. 31, 2018
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Estimated Fair Value	$ 2,285,794	$ 2,080,294
Fair Value, Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Estimated Fair Value	2,285,794
Mortgages Held-for-sale, Fair Value Disclosure	45,754	27,099
Available-for-sale Securities, Fair Value Disclosure		2,080,294
Investments held in Rabbi Trust	20,811	18,415
Derivative assets	140,894	62,944
Assets, Fair Value Disclosure	2,493,253	2,188,752
Liabilities Held-In-Trust, Fair Value Disclosure	20,811	18,415
Derivative Liability	78,358	48,566
Total liabilities	99,169	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	316,334
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	316,334
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	197,422
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	197,422
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	899,117
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	899,117
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	329,275
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	329,275
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	440,281
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	440,281
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	103,365
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	103,365
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	18,300	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	20,811	18,415
Derivative assets	541	392
Assets, Fair Value Disclosure	21,352	18,807
Liabilities Held-In-Trust, Fair Value Disclosure	20,811	18,415
Derivative Liability	475	381
Total liabilities	21,286	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	2,180,059
Mortgages Held-for-sale, Fair Value Disclosure	45,754	27,099
Available-for-sale Securities, Fair Value Disclosure		1,974,025
Investments held in Rabbi Trust	0	0
Derivative assets	140,353	62,552
Assets, Fair Value Disclosure	2,366,166	2,063,676
Liabilities Held-In-Trust, Fair Value Disclosure	0	0
Derivative Liability	77,883	48,185
Total liabilities	77,883	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	175,200	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	316,334
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	195,052
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	899,117
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	329,275
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	440,281
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	16,000	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	105,735
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	105,735	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	103,365
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		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Pooled Trust Preferred Securities [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Balance, beginning of period	$ 770	$ 865	$ 875	$ 707
Sales	(770)		(770)
Unrealized adjustment to fair value	0	10	(105)	168
(Premium amortization) discount accretion		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	2,430	3,095	2,400	3,050
Sales	0		0
Unrealized adjustment to fair value	(60)	102	(30)	144
(Premium amortization) discount accretion		3		6
Balance, end of period	2,370	3,200	2,370	3,200
Auction Rate Securities [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Balance, beginning of period	102,810	103,049	102,994	98,668
Sales	0		0
Unrealized adjustment to fair value	555	73	371	4,454
(Premium amortization) discount accretion		0		0
Balance, end of period	$ 103,365	$ 103,122	$ 103,365	$ 103,122

Fair Value Measurements Asset_2

Fair Value Measurements Assets Measured at Fair Value on a Nonrecurring Basis (Details) - USD ($) $ in Thousands	Jun. 30, 2019	Dec. 31, 2018
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
OREO	$ 7,241	$ 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	152,451	149,846
OREO	7,241	10,518
MSRs	44,916	50,204
Assets, Fair Value Disclosure	$ 204,608	$ 210,568

Fair Value Measurements Details

Fair Value Measurements Details of Book Value and Fair Value of Financial Instruments (Details) - USD ($) $ in Thousands	Jun. 30, 2019	Dec. 31, 2018
Fair Value, Balance Sheet Grouping, FinancialStatement Captions[Line Items]
Held to maturity investment securities	$ 589,728	$ 611,419
Estimated Fair Value	2,285,794	2,080,294
Reported Value Measurement [Member]
Fair Value, Balance Sheet Grouping, FinancialStatement Captions[Line Items]
Cash and due from banks	498,811	445,687
FRB and FHLB stock	97,248	79,283
Loans held for sale	45,754	27,099
Held to maturity investment securities	567,564	606,679
Estimated Fair Value	2,285,794	2,080,294
Net Loans	16,198,225	16,005,263
Accrued interest receivable	62,984	58,879
Other financial assets	318,776	235,782
Demand and savings deposits	13,249,017	13,478,016
Brokered deposits	246,116	176,239
Time deposits	2,893,762	2,721,904
Short-term borrowings	1,188,390	754,777
Accrued interest payable	9,218	10,529
Other financial liabilities	249,381	218,061
FHLB advances and long-term debt	987,416	992,279
Estimate of Fair Value Measurement [Member]
Fair Value, Balance Sheet Grouping, FinancialStatement Captions[Line Items]
Cash and due from banks	498,811	445,687
FRB and FHLB stock	97,248	79,283
Loans held for sale	45,754	27,099
Held to maturity investment securities	589,728	611,419
Estimated Fair Value	2,285,794	2,080,294
Net Loans	16,019,233	15,446,895
Accrued interest receivable	62,984	58,879
Other financial assets	318,776	235,782
Demand and savings deposits	13,249,017	13,478,016
Brokered deposits	246,408	176,239
Time deposits	2,894,290	2,712,296
Short-term borrowings	1,188,390	754,777
Accrued interest payable	9,218	10,529
Other financial liabilities	249,381	218,061
FHLB advances and long-term debt	986,336	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	498,811	445,687
FRB and FHLB stock	0	0
Loans held for sale	0	0
Held to maturity investment securities	589,728	611,419
Estimated Fair Value	0	0
Net Loans	0	0
Accrued interest receivable	62,984	58,879
Other financial assets	132,356	124,138
Demand and savings deposits	13,249,017	13,478,016
Brokered deposits	206,116	176,239
Time deposits	0	0
Short-term borrowings	1,188,390	754,777
Accrued interest payable	9,218	10,529
Other financial liabilities	164,790	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	97,248	79,283
Loans held for sale	45,754	27,099
Held to maturity investment securities	0	0
Estimated Fair Value	2,180,059	1,974,025
Net Loans	0	0
Accrued interest receivable	0	0
Other financial assets	140,353	62,552
Demand and savings deposits	0	0
Brokered deposits	40,292	0
Time deposits	2,894,290	2,712,296
Short-term borrowings	0	0
Accrued interest payable	0	0
Other financial liabilities	77,883	48,185
FHLB advances and long-term debt	986,336	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	105,735	106,269
Net Loans	16,019,233	15,446,895
Accrued interest receivable	0	0
Other financial assets	46,067	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	6,708	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	6 Months Ended
	Jun. 30, 2019	Jun. 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	$ 2,285,794	$ 2,285,794	$ 2,080,294
Significant input, assumed market return to liquidity (years)	5 years
Other real estate owned (OREO)	$ 7,241	$ 7,241	10,518
Minimum
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Weighted average annual constant prepayment rate		10.20%
Weighted average discount rate		9.50%
Fair Value, Measurements, Recurring [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Available for sale, at estimated fair value	2,285,794	$ 2,285,794
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	2,180,059	2,180,059
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	105,735	105,735
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	175,200	175,200	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	18,300	18,300	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	16,000	16,000	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] | Trust for Benefit of Employees [Member] | Fair Value, Inputs, Level 1 [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Other financial liabilities	20,800	20,800	18,400
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	286	286	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)	7,241	7,241	10,518
Net MSRs at end of period	44,916	44,916	50,204
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	331	331	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	2,300	2,300	1,200
Other financial liabilities	1,700	1,700	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	138,000	138,000	61,400
Other financial liabilities	$ 76,200	$ 76,200	$ 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		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Weighted Average Number of Shares Outstanding Reconciliation [Abstract]
Weighted average shares outstanding (basic) (in shares)	168,343	175,764	169,109	175,535
Impact of common stock equivalents (in shares)	825	1,080	933	1,171
Weighted average shares outstanding (diluted) (in shares)	169,168	176,844	170,042	176,706
Basic (in dollars per share)	$ 0.36	$ 0.20	$ 0.69	$ 0.48
Diluted (in dollars per share)	$ 0.35	$ 0.20	$ 0.68	$ 0.48

Stock-Based Compensation Compen

Stock-Based Compensation Compensation Expense and Related Tax Benefits (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Compensation expense	$ 1,788	$ 2,674	$ 3,348	$ 4,184
Tax benefit	(412)	(1,075)	(743)	(1,536)
Stock-based compensation expense, net of tax benefit	$ 1,376	$ 1,599	$ 2,605	$ 2,648

Stock-Based Compensation Narrat

Stock-Based Compensation Narrative (Details) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Statement [Line Items]
Compensation expense	$ 1,788	$ 2,674	$ 3,348	$ 4,184
Stock-based compensation expense, net of tax benefit	$ 1,376	$ 1,599	$ 2,605	$ 2,648
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	10,100		10,100

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		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Pension Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Interest cost	$ 815	$ 696	$ 1,630	$ 1,527
Expected return on plan assets	(689)	(573)	(1,378)	(1,024)
Net amortization and deferral	495	551	990	1,215
Net periodic benefit	621	674	1,242	1,718
Other Postretirement Benefits Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Interest cost	15	12	30	29
Net accretion and deferral	(139)	(139)	(278)	(280)
Net periodic benefit	$ (124)	$ (127)	$ (248)	$ (251)

Commitments and Contingencies O

Commitments and Contingencies Outstanding Commitments to Extend Credit and Letters of Credit (Details) - USD ($) $ in Thousands	Jun. 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	$ 6,688,574	$ 6,306,583
Standby Letters of Credit [Member]
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Valuation allowances and reserves, balance	300,262	309,352
Commercial Letters of Credit [Member]
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Valuation allowances and reserves, balance	$ 47,368	$ 48,682

Commitments and Contingencies -

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