Associated Banc-Corp (ASB) 10-Q 5 Aug 20 2020 Q2 Quarterly report Financial data

Document and Entity Information

Document and Entity Information - shares	6 Months Ended
	Jun. 30, 2020	Aug. 03, 2020
Entity Information [Line Items]
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Jun. 30, 2020
Document Transition Report	false
Entity File Number	001-31343
Entity Registrant Name	Associated Banc-Corp
Entity Incorporation, State or Country Code	WI
Entity Address, Address Line One	433 Main Street
Entity Address, City or Town	Green Bay,
Entity Address, State or Province	WI
Entity Tax Identification Number	39-1098068
Entity Address, Postal Zip Code	54301
City Area Code	920
Local Phone Number	491-7500
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Large Accelerated Filer
Entity Emerging Growth Company	false
Entity Small Business	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding		153,684,573
Entity Central Index Key	0000007789
Amendment Flag	false
Document Fiscal Year Focus	2020
Document Fiscal Period Focus	Q2
Current Fiscal Year End Date	--12-31
The New York Stock Exchange
Entity Information [Line Items]
Title of 12(b) Security	Common stock, par value $0.01 per share
Trading Symbol	ASB
Security Exchange Name	NYSE
Series C Preferred Stock | The New York Stock Exchange
Entity Information [Line Items]
Title of 12(b) Security	Depositary Shrs, each representing 1/40th intrst in a shr of 6.125% Non-Cum. Perp Pref Stock, Srs C
Trading Symbol	ASB PrC
Security Exchange Name	NYSE
Series D Preferred Stock | The New York Stock Exchange
Entity Information [Line Items]
Title of 12(b) Security	Depositary Shrs, each representing 1/40th intrst in a shr of 5.375% Non-Cum. Perp Pref Stock, Srs D
Trading Symbol	ASB PrD
Security Exchange Name	NYSE
Series E Preferred Stock | The New York Stock Exchange
Entity Information [Line Items]
Title of 12(b) Security	Depositary Shrs, each representing 1/40th intrst in a shr of 5.875% Non-Cum. Perp Pref Stock, Srs E
Trading Symbol	ASB PrE
Security Exchange Name	NYSE
Series F Preferred Stock | The New York Stock Exchange
Entity Information [Line Items]
Title of 12(b) Security	Depositary Shrs, each representing 1/40th intrst in a shr of 5.625% Non-Cum. Perp Pref Stock, Srs F
Trading Symbol	ASB PrF
Security Exchange Name	NYSE

Consolidated Balance Sheets

Consolidated Balance Sheets - USD ($) $ in Thousands	Jun. 30, 2020	Dec. 31, 2019
Assets
Cash and due from banks	$ 443,500	$ 373,380
Interest-bearing deposits in other financial institutions	1,569,006	207,624
Federal funds sold and securities purchased under agreements to resell	185	7,740
Investment securities held to maturity, net, at amortized cost(a)	2,077,225	2,205,083
Investment securities available for sale, at fair value	3,149,773	3,262,586
Equity securities	15,091	15,090
Federal Home Loan Bank and Federal Reserve Bank stocks, at cost	206,281	227,347
Loans	24,832,671	22,821,440
Allowance for loan losses(a)	(363,803)	(201,371)
Loans, net	24,468,868	22,620,068
Bank and corporate owned life insurance	676,196	671,948
Tax credit and other investments	303,132	279,969
Premises and equipment, net	434,042	435,284
Goodwill	1,107,902	1,176,230
Mortgage servicing rights, net	49,403	67,306
Other intangible assets, net	72,759	88,301
Interest Receivable	87,097	91,196
Other assets	640,765	506,046
Total assets	35,501,464	32,386,478
Liabilities and Stockholders' Equity
Noninterest-bearing demand deposits	7,573,942	5,450,709
Interest-bearing deposits	18,977,502	18,328,355
Total deposits	26,551,444	23,779,064
Federal funds purchased and securities sold under agreements to repurchase	142,293	433,097
Commercial paper	39,535	32,016
PPPLF	1,009,760	0
FHLB advances	2,657,016	3,180,967
Other long-term funding	548,937	549,343
Unfunded Commitments	64,776	21,907
Accrued expenses and other liabilities(a)	463,245	467,961
Total liabilities	31,477,007	28,464,355
Stockholders’ Equity
Preferred equity	353,846	256,716
Common stock	1,752	1,752
Surplus	1,712,978	1,716,431
Retained earnings(a)	2,412,859	2,380,867
Accumulated other comprehensive income (loss)	(1,920)	(33,183)
Treasury stock, at cost	(455,057)	(400,460)
Total common equity	3,670,612	3,665,407
Total stockholders’ equity	4,024,457	3,922,124
Total liabilities and stockholders’ equity	$ 35,501,464	$ 32,386,478
Preferred shares authorized (par value $1.00 per share)	750,000	750,000
Preferred shares issued and outstanding	364,458	264,458
Common shares authorized (par value $0.01 per share)	250,000,000	250,000,000
Common shares issued	175,216,409	175,216,409
Common shares outstanding	153,615,657	157,171,247
Residential loans held for sale
Assets
Loans Receivable Held-for-sale, Amount	$ 196,673	$ 136,280
Loans	7,933,518	8,136,980
Commercial loans held for sale
Assets
Loans Receivable Held-for-sale, Amount	3,565	15,000
Loans	$ 15,777,441	13,481,275
Allowance for loan losses(a)		$ (166,846)

Consolidated Balance Sheets (Pa

Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands	Jun. 30, 2020	Dec. 31, 2019
Preferred shares, par value	$ 1	$ 1
Common shares, par value	$ 0.01	$ 0.01
Allowance for Unfunded Commitments	$ 64,776	$ 21,907
Allowance for Loan Losses		201,371
Retained Earnings (Accumulated Deficit)	2,412,859	2,380,867
Allowance for Loan Losses [Member]
Allowance for Loan Losses	363,803	201,371
SEC Schedule, 12-09, Reserve, Off-balance Sheet Activity [Member]
Allowance for Unfunded Commitments	$ 64,776	$ 21,907

Consolidated Statements of Inco

Consolidated Statements of Income - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Interest income
Interest and fees on loans	$ 191,895	$ 260,784	$ 416,681	$ 519,637
Interest and dividends on investment securities
Taxable	16,103	26,710	36,375	55,764
Tax-exempt	14,616	14,643	29,498	28,459
Other interest	2,231	3,995	5,535	8,221
Total interest income	224,845	306,133	488,090	612,081
Interest expense
Interest on deposits	13,178	67,050	49,844	129,823
Interest on federal funds purchased and securities sold under agreements to repurchase	51	286	420	913
Interest on other short-term funding	683	37	721	88
Interest on FHLB advances	15,470	17,744	33,096	37,298
Interest on long-term funding	5,591	7,396	11,195	14,792
Total interest expense	34,973	92,513	95,276	182,914
Net interest income	189,872	213,619	392,814	429,167
Provision for credit losses	61,000	8,000	114,001	14,000
Net interest income after provision for credit losses	128,872	205,619	278,813	415,167
Noninterest income
Noninterest Income In Scope of Topic 606	66,933	72,703	138,282	145,441
Capital markets, net	6,910	4,726	14,845	7,916
Mortgage banking, net	12,263	9,466	18,407	14,178
Bank and corporate owned life insurance	3,625	3,352	6,719	7,144
Asset gains (losses), net(b)	157,361	871	157,284	1,438
Investment securities gains (losses), net	3,096	463	9,214	2,143
Other	2,737	2,547	5,090	5,807
Total noninterest income	254,490	95,837	352,796	187,040
Noninterest expense
Personnel	111,350	123,228	225,551	243,279
Technology	21,174	20,114	41,973	39,126
Occupancy	14,464	13,830	30,532	30,302
Business development and advertising	3,556	6,658	9,382	13,293
Equipment	5,312	5,577	10,751	11,245
Legal and professional	5,058	4,668	10,217	8,619
Loan and foreclosure costs	3,605	1,814	6,725	3,961
FDIC assessment	5,250	4,500	10,750	8,250
Other intangible amortization	2,872	2,324	5,686	4,551
Other	10,249	11,331	21,791	22,459
Total noninterest expense	183,407	197,779	375,598	389,450
Income (loss) before income taxes	199,955	103,678	256,012	212,756
Income tax expense	51,238	19,017	61,457	41,409
Net income	148,718	84,661	194,555	171,347
Preferred stock dividends	4,144	3,801	7,945	7,601
Net income available to common equity	$ 144,573	$ 80,860	$ 186,611	$ 163,746
Earnings per common share
Basic	$ 0.94	$ 0.49	$ 1.21	$ 1
Diluted	$ 0.94	$ 0.49	$ 1.20	$ 0.99
Average common shares outstanding
Basic	152,393	162,180	153,547	163,049
Diluted	153,150	163,672	154,360	164,518
Huntington National Bank
Noninterest income
Related acquisition asset losses net of asset gains		less than $1 million		less than $1 million
Insurance commissions and fees
Noninterest income
Noninterest Income In Scope of Topic 606	$ 22,430	$ 22,985	$ 45,038	$ 48,449
Wealth management fees(a)
Noninterest income
Noninterest Income In Scope of Topic 606	20,916	20,691	41,732	40,870
Service charges and deposit account fees
Noninterest income
Noninterest Income In Scope of Topic 606	11,484	15,426	26,706	30,542
Card-based fees
Noninterest income
Noninterest Income In Scope of Topic 606	8,922	10,177	18,529	19,472
Service charges and account fees	8,893	10,131	18,490	19,392
Other fee-based revenue
Noninterest income
Noninterest Income In Scope of Topic 606	3,181	3,424	6,277	6,108
Service charges and account fees	4,774	5,178	9,272	9,161
Risk Management and Shared Services
Noninterest income
Asset gains (losses), net(b)	163,000		163,000
Operating Segments | Risk Management and Shared Services
Interest expense
Net interest income	17,929	22,375	38,190	44,306
Provision for credit losses	41,858	(9,211)	77,579	(20,480)
Noninterest income
Total noninterest income	165,242	2,447	171,465	8,228
Noninterest expense
Acquisition related costs(c)	518	3,734	2,238	4,366
Total noninterest expense	10,280	21,634	34,779	45,456
Income (loss) before income taxes	109,802	2,919	68,129	12,887
Income tax expense	33,950	(1,127)	25,255	1,466
Net income	$ 75,853	$ 4,047	$ 42,874	$ 11,422

Consolidated Statements of Comp

Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Statement of Comprehensive Income [Abstract]
Net income	$ 148,718	$ 84,661	$ 194,555	$ 171,347
Investment securities available for sale
Net unrealized gains (losses)	21,641	59,476	48,060	89,966
Amortization of net unrealized (gains) losses on available for sale securities transferred to held to maturity securities	776	218	1,332	288
Reclassification adjustment for net losses (gains) realized in net income	(3,096)	(463)	(9,214)	(2,143)
Income tax (expense) benefit	(4,841)	(14,940)	(10,066)	(22,242)
Other comprehensive income (loss) on investment securities available for sale	14,481	44,292	30,112	65,869
Defined benefit pension and postretirement obligations
Amortization of prior service cost	(38)	(38)	(75)	(75)
Amortization of actuarial loss (gain)	803	64	1,610	128
Income tax (expense) benefit	(192)	(7)	(385)	(13)
Other comprehensive income (loss) on pension and postretirement obligations	573	20	1,150	40
Total other comprehensive income (loss)	15,054	44,311	31,263	65,909
Comprehensive income	$ 163,772	$ 128,972	$ 225,818	$ 237,256

Consolidated Statements of Chan

Consolidated Statements of Changes in Stockholders' Equity (Unaudited) - USD ($) $ in Thousands	Total	Cumulative Effect, Period Of Adoption, Adjustment	Cumulative Effect, Period Of Adoption, Adjusted Balance	Performance/Service Based RSAs, RSA,	Board Authorized Purchase Program [Member]	Series C Preferred Stock	Series D Preferred Stock	Series E Preferred Stock	Series F Preferred Stock	Preferred Equity	Preferred EquityCumulative Effect, Period Of Adoption, Adjusted Balance	Common Stock	Common StockCumulative Effect, Period Of Adoption, Adjusted Balance	Surplus	SurplusCumulative Effect, Period Of Adoption, Adjusted Balance	Retained Earnings	Retained EarningsCumulative Effect, Period Of Adoption, Adjustment	Retained EarningsCumulative Effect, Period Of Adoption, Adjusted Balance	Accumulated Other Comprehensive Income (Loss)	Accumulated Other Comprehensive Income (Loss)Cumulative Effect, Period Of Adoption, Adjusted Balance	Treasury Stock	Treasury StockCumulative Effect, Period Of Adoption, Adjusted Balance	Treasury StockPerformance/Service Based RSAs, RSA,	Treasury StockBoard Authorized Purchase Program [Member]
Beginning balance at Dec. 31, 2018	$ 3,780,888									$ 256,716		$ 1,752		$ 1,712,615		$ 2,181,414			$ (124,972)		$ (246,638)
Comprehensive income
Net income	86,686															86,686
Other comprehensive income (loss)	21,597																		21,597
Comprehensive income	108,283
Common stock issued
Stock-based compensation plans, net	7,045													(32,220)		0					39,265
Purchase of treasury stock,				$ (7,468)	$ (29,999)																		$ (7,468)	$ (29,999)
Cash dividends
Common stock ($0.17 per share in 2019 and $0.18 per share in 2020)	(28,183)															(28,183)
Preferred stock(a)	(3,801)															(3,801)
Stock-based compensation expense, net	9,397													9,397
Stockholders' Equity, Other	(293)															(293)
Ending balance at Mar. 31, 2019	3,835,870									256,716		1,752		1,689,792		2,235,824			(103,375)		(244,840)
Cash dividends
Preferred Stock, Dividends, Per Share, Cash Paid						$ 0.3828125	$ 0.3359375	$ 0.3671875
Beginning balance at Dec. 31, 2018	3,780,888									256,716		1,752		1,712,615		2,181,414			(124,972)		(246,638)
Comprehensive income
Net income	171,347
Other comprehensive income (loss)	65,909																		65,909
Comprehensive income	237,256
Ending balance at Jun. 30, 2019	3,899,794									256,716		1,752		1,695,715		2,288,909			(59,063)		(284,235)
Beginning balance at Mar. 31, 2019	3,835,870									256,716		1,752		1,689,792		2,235,824			(103,375)		(244,840)
Comprehensive income
Net income	84,661															84,661
Other comprehensive income (loss)	44,311																		44,311
Comprehensive income	128,972
Common stock issued
Stock-based compensation plans, net	827													(211)		0					1,038
Purchase of treasury stock,				(831)	(39,602)																		(831)	(39,602)
Cash dividends
Common stock ($0.17 per share in 2019 and $0.18 per share in 2020)	(27,776)															(27,776)
Preferred stock(a)	(3,801)															(3,801)
Stock-based compensation expense, net	6,134													6,134
Ending balance at Jun. 30, 2019	3,899,794									256,716		1,752		1,695,715		2,288,909			(59,063)		(284,235)
Cash dividends
Preferred Stock, Dividends, Per Share, Cash Paid						0.3828125	0.3359375	0.3671875
Beginning balance at Dec. 31, 2019	3,922,124		$ 3,823,787							256,716	$ 256,716	1,752	$ 1,752	1,716,431	$ 1,716,431	2,380,867		$ 2,282,530	(33,183)	$ (33,183)	(400,460)	$ (400,460)
Beginning balance (Accounting Standards Update 2016-13) at Dec. 31, 2019		$ (98,337)															$ (98,337)
Comprehensive income
Net income	45,838															45,838
Other comprehensive income (loss)	16,209																		16,209
Comprehensive income	62,046
Common stock issued
Stock-based compensation plans, net	2,896													(20,659)							23,555
Purchase of treasury stock,				(5,555)	$ (71,255)																		(5,555)	$ (71,255)
Cash dividends
Common stock ($0.17 per share in 2019 and $0.18 per share in 2020)	(28,392)															(28,392)
Preferred stock(a)	(3,801)															(3,801)
Stock-based compensation expense, net	10,744													10,744
Ending balance at Mar. 31, 2020	3,790,471									256,716		1,752		1,706,516		2,296,176			(16,974)		(453,714)
Cash dividends
Preferred Stock, Dividends, Per Share, Cash Paid						0.3828125	0.3359375	0.3671875
Beginning balance at Dec. 31, 2019	3,922,124		$ 3,823,787							256,716	$ 256,716	1,752	$ 1,752	1,716,431	$ 1,716,431	2,380,867		$ 2,282,530	(33,183)	$ (33,183)	(400,460)	$ (400,460)
Beginning balance (Accounting Standards Update 2016-13) at Dec. 31, 2019		$ (98,337)															$ (98,337)
Comprehensive income
Net income	194,555
Other comprehensive income (loss)	31,263																		31,263
Comprehensive income	225,818
Ending balance at Jun. 30, 2020	4,024,457									353,846		1,752		1,712,978		2,412,859			(1,920)		(455,057)
Beginning balance at Mar. 31, 2020	3,790,471									256,716		1,752		1,706,516		2,296,176			(16,974)		(453,714)
Comprehensive income
Net income	148,718															148,718
Other comprehensive income (loss)	15,054																		15,054
Comprehensive income	163,772
Common stock issued
Stock-based compensation plans, net	173													1,523							(1,350)
Purchase of treasury stock,				$ 7																			$ 7
Cash dividends
Common stock ($0.17 per share in 2019 and $0.18 per share in 2020)	(27,889)															(27,889)
Preferred stock(a)	(4,144)															(4,144)
Issuance of preferred stock	97,129									97,129
Stock-based compensation expense, net	4,939													4,939
Ending balance at Jun. 30, 2020	$ 4,024,457									$ 353,846		$ 1,752		$ 1,712,978		$ 2,412,859			$ (1,920)		$ (455,057)
Cash dividends
Preferred Stock, Dividends, Per Share, Cash Paid						$ 0.3828125	$ 0.3359375	$ 0.3671875	$ 0.0849931

Consolidated Statements of Ch_2

Consolidated Statements of Changes in Stockholders' Equity (Parenthetical) - $ / shares	3 Months Ended
	Jun. 30, 2020	Mar. 31, 2020	Jun. 30, 2019	Mar. 31, 2019
Common Stock, Dividends, Per Share, Cash Paid	$ 0.18	$ 0.18	$ 0.17	$ 0.17

Consolidated Statements of Cash

Consolidated Statements of Cash Flows - USD ($) $ in Thousands	3 Months Ended				6 Months Ended		12 Months Ended
	Jun. 30, 2020	Mar. 31, 2020	Jun. 30, 2019	Mar. 31, 2019	Jun. 30, 2020	Jun. 30, 2019	Dec. 31, 2019	Jun. 30, 2020	Jun. 30, 2019
Cash Flow From Operating Activities
Net income	$ 148,718	$ 45,838	$ 84,661	$ 86,686	$ 194,555	$ 171,347
Adjustments to reconcile net income to net cash provided by (used in) operating activities
Provision for credit losses	61,000		8,000		114,001	14,000
Depreciation and amortization					29,119	28,810
Addition to (recovery of) valuation allowance on mortgage servicing rights, net					17,029	146
Amortization of mortgage servicing rights					10,043	5,448
Amortization of other intangible assets	2,872		2,324		5,686	4,551
Amortization and accretion on earning assets, funding, and other, net					14,060	14,495
Net amortization of tax credit investments					13,661	11,180
Losses (gains) on sales of investment securities, net					(9,214)	(2,143)
Asset (gains) losses, net					(157,284)	(1,438)
(Gain) loss on mortgage banking activities, net					(26,545)	(11,172)
Mortgage loans originated and acquired for sale					(860,674)	(459,181)
Proceeds from sales of mortgage loans held for sale					1,022,268	432,099
Changes in certain assets and liabilities
(Increase) decrease in interest receivable					4,099	(11,738)
Increase (decrease) in interest payable					(3,682)	3,572
Increase (decrease) in expense payable					(49,911)	(35,516)
(Increase) decrease in net derivative position					(138,961)	(93,872)
Increase (decrease) in unsettled trades					20,515	(136)
(Increase) decrease in net income tax position					18,606	27,010
Net change in other assets and other liabilities					68,750	(26,992)
Net cash provided by (used in) operating activities					286,120	70,470
Cash Flow From Investing Activities
Net increase in loans					(1,912,941)	(244,230)
Purchases of
Available for sale securities					(867,693)	(460,124)
Held to maturity securities					(65,563)	(169,775)
Federal Home Loan Bank and Federal Reserve Bank stocks					(78,153)	(178,363)
Premises, equipment, and software, net of disposals					(22,577)	(30,608)
Other intangibles					(200)	0
Proceeds from
Sales of available for sale securities					626,276	934,228
Sale of Federal Home Loan Bank and Federal Reserve Bank stocks					100,000	226,139
Prepayments, calls, and maturities of available for sale investment securities					499,025	262,872
Prepayments, calls, and maturities of held to maturity investment securities					191,953	100,603
Sales, prepayments, calls, and maturities of other assets					12,728	7,064
Net change in tax credit and alternative investments					(30,276)	(30,814)
Net cash (paid) received in acquisition					(31,518)
Net cash (paid) received in acquisition						551,250
Net cash provided by (used in) investing activities					(1,322,370)	968,242
Cash Flow From Financing Activities
Net increase (decrease) in deposits					2,334,002	(348,344)
Net increase (decrease) in short-term funding					(309,144)	(45,091)
Net increase (decrease) in short-term FHLB advances					(520,000)	(820,000)
Repayment of long-term FHLB advances					(16,583)	(762,880)
Proceeds from long-term FHLB advances					4,000	751,573
Proceeds from PPPLF					1,009,760	0
Proceeds from finance lease principal					(1,007)	0
Proceeds from issuance of preferred shares					97,129	0
Proceeds from issuance of common stock for stock-based compensation plans					3,069	7,872
Cash dividends on common stock					(56,281)	(55,959)
Cash dividends on preferred stock					(7,945)	(7,601)
Net cash provided by (used in) financing activities					2,460,197	(1,358,331)
Net increase (decrease) in cash, cash equivalents, and restricted cash					1,423,947	(319,619)
Cash, cash equivalents, and restricted cash at beginning of period		588,744		876,698	588,744	876,698	$ 876,698
Cash, cash equivalents, and restricted cash at end of period	2,012,691		557,078		2,012,691	557,078	588,744
Supplemental disclosures of cash flow information
Cash paid for interest					97,929	178,550
Cash paid for (received from) income and franchise taxes					3,318	21,909
Loans and bank premises transferred to OREO					5,212	5,406
Capitalized mortgage servicing rights					9,169	3,575
Loans transferred into held for sale from portfolio, net					201,827	30,597
Unsettled trades to purchase securities					20,515	136
Acquisition
Fair value of assets acquired, including cash and cash equivalents								$ 459,235	$ 696,013
Fair value ascribed to goodwill and intangible assets								20,793	29,626
Fair value of liabilities assumed								480,028	725,719
Equity issued in (adjustments related to) acquisition					0	(79)
Restricted Cash and Cash Equivalents
Cash and cash equivalents								2,012,691	403,693
Restricted cash								0	153,385
Total cash, cash equivalents, and restricted cash shown in the statement of cash flows	$ 2,012,691	$ 588,744	$ 557,078	$ 876,698	2,012,691	557,078	$ 876,698	$ 2,012,691	$ 557,078
ABRC
Proceeds from
Sales, prepayments, calls, and maturities of other assets					256,571	0
Performance/Service Based RSAs, RSA,
Cash Flow From Financing Activities
Payments for Repurchase of Common Stock					(5,548)	(8,299)
Board Authorized Purchase Program [Member]
Cash Flow From Financing Activities
Payments for Repurchase of Common Stock					$ (71,255)	$ (69,601)

Basis of Presentation

Basis of Presentation	6 Months Ended
	Jun. 30, 2020
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Basis of Presentation	Basis of Presentation In the opinion of management, the accompanying unaudited consolidated financial statements contain all adjustments necessary to present fairly the financial position, results of operations and comprehensive income, changes in stockholders’ equity, and cash flows of the Corporation and Parent Company for the periods presented, and all such adjustments are of a normal recurring nature. The consolidated financial statements include the accounts of all subsidiaries. All significant intercompany transactions and balances have been eliminated in consolidation. The results of operations for the interim periods are not necessarily indicative of the results to be expected for the full year. In preparing the consolidated financial statements, management is required to make estimates and assumptions that affect the reported amounts of assets and liabilities as of the date of the balance sheet and revenues and expenses for the period. Actual results could differ significantly from those estimates. Estimates that are particularly susceptible to significant change include the determination of the ACLL, goodwill impairment assessment, MSRs valuation, and income taxes. Management has evaluated subsequent events for potential recognition or disclosure. Within the tables presented, certain columns and rows may not sum due to the use of rounded numbers for disclosure purposes.

Acquisitions

Acquisitions	6 Months Ended
	Jun. 30, 2020
Business Combinations [Abstract]
Acquisitions and Dispositions	Acquisitions and Dispositions Acquisitions: First Staunton Acquisition On February 14, 2020, the Corporation completed its acquisition of First Staunton. The Corporation paid a 4% premium on acquired deposits. The conversion of the branches was completed simultaneously with the close of the transaction, expanding the Bank's presence into 9 new Metro-East St. Louis communities. As a result of the acquisition and other consolidations, a net of 7 branch locations were added. The First Staunton acquisition constituted a business combination. The acquisition has been accounted for using the acquisition method of accounting and, accordingly, assets acquired, liabilities assumed, and consideration exchanged were recorded at estimated fair value on the acquisition date. The determination of estimated fair values required management to make certain estimates that are subjective in nature and may require adjustments upon the availability of new information regarding facts and circumstances which existed at the date of acquisition (i.e., appraisals) for up to a year following the acquisition. The Corporation continues to review information relating to events or circumstances existing at the acquisition date. Management anticipates that this review could result in adjustments to the acquisition date valuation amounts presented herein but does not anticipate that these adjustments will be material. The Corporation recorded approximately $15 million in goodwill related to the First Staunton acquisition during the first quarter of 2020, however the Corporation subsequently reduced goodwill by $2 million during the second quarter of 2020. Upon review of information relating to events and circumstances existing at the acquisition date, and in accordance with applicable accounting guidance, the Corporation remeasured select previously reported fair value amounts. The adjustment to goodwill was driven by an update that increased the fair value of MSRs acquired. Goodwill created by the acquisition is not tax deductible. See Note 8 for additional information on goodwill, as well as the carrying amount and amortization of CDI assets related to the First Staunton acquisition. The following table presents the estimated fair values of the assets acquired and liabilities assumed as of the acquisition date related to the First Staunton acquisition: ($ in Thousands) Purchase Accounting Adjustments February 14, 2020 Assets Cash and cash equivalents $ — $ 44,782 Investment securities available for sale (24) 98,743 Federal Home Loan Bank and Federal Reserve Bank stocks, at cost — 781 Loans (4,808) 369,741 Premises and equipment, net (3,005) 4,865 Bank owned life insurance 9 6,770 Goodwill 13,414 Core deposit intangibles (included in other intangible assets, net on the face of the consolidated balance sheets) 7,379 7,379 OREO (included in other assets on the face of the consolidated balance sheets) 670 762 Other assets 4,193 9,090 Total assets $ 556,328 Liabilities Deposits $ 1,285 $ 438,684 Other borrowings 61 34,613 Accrued expenses and other liabilities 179 6,730 Total liabilities $ 480,028 Total consideration paid $ 76,300 For a description of methods used to determine the fair value of significant assets and liabilities presented on the balance sheet above, see Assumptions section of this Note. The Corporation has purchased loans with the First Staunton acquisition, for which there was, at acquisition, evidence of more than insignificant deterioration of credit quality since origination. The carrying amount of those loans is as follows: ($ in Thousands) February 14, 2020 Purchase price of loans at acquisition $ 77,221 Allowance for credit losses at acquisition 3,504 Non-credit discount/(premium) at acquisition (951) Par value of acquired loans at acquisition $ 79,774 There were no PCD securities. Huntington Wisconsin Branch Acquisition On June 14, 2019, the Corporation completed its acquisition of the Wisconsin branches of Huntington. The Corporation paid a 4% premium on acquired deposits. The conversion of the branches happened simultaneously with the close of the transaction and the acquisition expanded the Bank's presence into 13 new Wisconsin communities. As a result of the acquisition and other consolidations, a net of 14 branch locations were added. The Huntington branch acquisition constituted a business combination. The acquisition has been accounted for using the acquisition method of accounting and, accordingly, assets acquired, liabilities assumed, and consideration exchanged were recorded at estimated fair value on the acquisition date. The determination of estimated fair values required management to make certain estimates that are subjective in nature and may require adjustments upon the availability of new information regarding facts and circumstances which existed at the date of acquisition (i.e., appraisals) for up to a year following the acquisition. The Corporation recorded approximately $7 million in goodwill related to the Huntington branch acquisition during the second quarter of 2019 and approximately $210,000 during the third quarter of 2019. Upon review of information relating to events and circumstances existing at the acquisition date, and in accordance with applicable accounting guidance, the Corporation remeasured select previously reported fair value amounts. The adjustment to goodwill was driven by an update that decreased the fair value of furniture acquired. Goodwill created by the acquisition is tax deductible. See Note 8 for additional information on goodwill. The following table presents the estimated fair values of the assets acquired and liabilities assumed as of the acquisition date related to Huntington branch acquisition: ($ in Thousands) Purchase Accounting Adjustments June 14, 2019 Assets Cash and cash equivalents $ — $ 551,250 Loans (1,552) 116,346 Premises and equipment, net 4,800 22,430 Goodwill 7,286 Core deposit intangibles (included in other intangible assets, net on the face of the consolidated balance sheets) 22,630 22,630 OREO (included in other assets on the face of the consolidated balance sheets) (2,561) 5,263 Other assets — 559 Total assets $ 725,764 Liabilities Deposits $ 156 $ 725,173 Other liabilities 70 590 Total liabilities $ 725,764 Assumptions Investment Securities: The fair value of investments on the date of acquisition was determined utilizing an external third party broker opinion of the market value. Loans: Fair values for loans were based on a discounted cash flow methodology that considered factors including the type of loan and related collateral, classification status, fixed or variable interest rate, term of loan, amortization status and current discount rates. For the non-credit (interest and liquidity) premium, loans were grouped together according to similar characteristics when applying various valuation techniques. For the credit discount, loans were also grouped based on whether they had more than insignificant deterioration in credit since origination. CDIs: This intangible asset represents the value of the relationships with deposit customers. The fair value was estimated based on a discounted cash flow methodology that gave appropriate consideration to expected customer attrition rates, net maintenance cost of the deposit base, alternative cost of funds, and the interest costs associated with customer deposits. The CDIs will be amortized on a straight-line basis over 10 years. Time Deposits: The fair value for time deposits are estimated using a discounted cash flow calculation that applies interest rates currently being offered to the contractual interest rates on such time deposits. FHLB Borrowings: The fair value of FHLB advances are estimated based on quoted market prices for the instrument if available, or for similar instruments if not available, or by using discounted cash flow analyses, based on current incremental borrowing rates for similar types of instruments. Dispositions: Associated Benefits & Risk Consulting On June 30, 2020, the Corporation announced that it had closed the previously announced sale of ABRC to USI. Under the terms of the agreement, the purchase price was $266 million in cash, subject to adjustments for, among other things, transaction expenses and working capital changes. Associated recorded a second quarter 2020 pre-tax book gain of approximately $163 million in conjunction with the sale.

Summary of Significant Accounti

Summary of Significant Accounting Policies	6 Months Ended
	Jun. 30, 2020
Accounting Standards Update and Change in Accounting Principle [Abstract]
Summary of Significant Accounting Policies	Summary of Significant Accounting Policies The accounting and reporting policies of the Corporation conform to U.S. GAAP and to general practice within the financial services industry. A discussion of these policies can be found in Note 1 Summary of Significant Accounting Policies included in the Corporation’s 2019 Annual Report on Form 10-K. As a result of adopting ASU 2016-13 Financial Instruments - Credit Losses (Topic 326), there have been changes to the Corporation's significant accounting policies since December 31, 2019, which are described below. Investment Securities Management measures expected credit losses on held to maturity securities on a collective basis by major security type. Accrued interest receivable on held to maturity securities is excluded from the estimate of credit losses. The estimate of expected credit losses considers historical credit loss information that is adjusted for current conditions and reasonable and supportable forecasts and is included in investment securities held to maturity, net on the consolidated balance sheets. For available for sale securities, the Corporation evaluates whether any decline in fair value has resulted from credit losses or other factors. In making this assessment, management considers the extent to which fair value is less than amortized cost, any changes to the rating of the security by a rating agency, and adverse conditions specifically related to the security, among other factors. If this assessment indicates that a credit loss exists, the present value of cash flows expected to be collected from the security are compared to the amortized cost basis of the security. If the present value of cash flows expected to be collected is less than the amortized cost basis, a credit loss exists and an allowance for credit losses on investments is recorded for the credit loss, limited by the amount that the fair value is less than the amortized cost basis. Any impairment that has not been recorded through an allowance for credit losses on investments is recognized in other comprehensive income. Changes in the allowance for credit losses on investments are recorded as provision for, or reversal of, credit loss expense. Losses are charged against the allowance when management believes the available for sale security is uncollectible or when either of the criteria regarding intent or requirement to sell is met. Accrued interest receivable on available for sale debt securities is excluded from the estimate of credit losses. Allowance for Credit Losses on Loans The level of the allowance for loan losses represents management's estimate of an amount appropriate to provide for lifetime credit losses in the loan portfolio at the balance sheet date. The allocation methodology applied by the Corporation, designed to assess the appropriateness of the allowance for loan losses, includes an allocation methodology, as well as management’s ongoing review and grading of the loan portfolio into criticized loan categories. The allocation methodology focuses on evaluation of several factors, including but not limited to: evaluation of facts and issues related to specific loans, management's ongoing review and grading of the loan portfolio using a dual risk rating system leveraging probability of default and loss given default, consideration of historical credit loss and delinquency experience on each portfolio category, trends in past due and nonaccrual loans, the level of potential problem loans, the risk characteristics of the various classifications of loans, changes in the size and character of the loan portfolio, concentrations of loans to specific borrowers or industries, existing economic conditions and economic forecasts, the fair value of underlying collateral, and other qualitative and quantitative factors which could affect potential loan losses. The Corporation utilizes the Moody's Baseline economic forecast in the allowance model and applies that forecast over a reasonable and supportable period with reversion to historical losses. For additional detail on the reasonable and supportable period and reversion methodology, see Note 7. Potential problem loans are generally defined by management to include loans rated as substandard by management. Assessing these numerous factors involves significant judgment. The provision for loan losses is predominantly a function of the result of the methodology and other qualitative and quantitative factors used to determine the allowance for loan losses. Management individually analyzes loans that do not share similar risk characteristics to other loans in the portfolio. Management has determined that commercial loan relationships that have nonaccrual status or commercial and retail loans that have had their terms restructured in a TDR meet this definition. Probable TDRs are loans the Corporation has reviewed individually to determine whether there is a high likelihood that the loans will default and will require restructuring in the near future. Probable TDRs could be classified as Pass, Special Mention, Substandard or Nonaccrual within the Corporation's credit quality analysis depending on the specific circumstances surrounding the individual credits. Accrued interest receivable on loans is excluded from the estimate of credit losses. The allowance for unfunded commitments leverages the same methodology utilized to measure the allowance for loan losses. The Corporation estimates expected credit losses over the contractual period in which the Corporation is exposed to credit risk via a contractual obligation to extend credit, unless that obligation is unconditionally cancellable by the Corporation. The estimate includes consideration of the likelihood that funding will occur and an estimate of expected credit losses on commitments expected to be funded over its estimated life. See Note 7 for additional information on the ACLL and Note 12 for additional information on the allowance for unfunded commitments. Impact of adopting ASU 2016-13 Financial Instruments - Credit Losses (Topic 326) The following table illustrates the adoption impact: December 31, 2019 January 1, 2020 ($ in Thousands) Allowance for Loan Losses Allowance for Unfunded Commitments CECL Day 1 Adjustment ACLL Beginning Balance Commercial and industrial $ 91,133 $ 12,276 $ 48,921 $ 152,330 Commercial real estate - owner occupied 10,284 127 (1,851) 8,560 Commercial and business lending 101,417 12,403 47,070 160,890 Commercial real estate - investor 40,514 530 2,287 43,331 Real estate construction 24,915 7,532 25,814 58,261 Commercial real estate lending 65,428 8,062 28,101 101,591 Total Commercial 166,846 20,465 75,171 262,482 Residential mortgage 16,960 — 33,215 50,175 Home equity 10,926 1,038 14,240 26,204 Other consumer 6,639 405 8,520 15,564 Total consumer 34,525 1,443 55,975 91,943 Total loans $ 201,371 $ 21,907 $ 131,147 $ 354,425 The allowance for credit losses on held to maturity securities was approximately $61,000 at January 1, 2020, attributable entirely to the Corporation's municipal securities. At January 1, 2020, the adoption of ASU 2016-13 resulted in an increase to the allowance for loan losses of $112 million and an increase to the allowance for unfunded commitments of $19 million for a total increase to the ACLL of $131 million. A corresponding after tax decrease to common equity of $98 million was recorded along with a deferred tax asset of $33 million. New Accounting Pronouncements Adopted Standard Description Date of adoption Effect on financial statements ASU 2016-13 Financial Instruments - Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments The FASB issued an amendment to replace the current incurred loss impairment methodology. Under the new guidance, entities will be required to measure expected credit losses by utilizing forward-looking information to assess an entity's ACL. The guidance also requires consideration of a broader range of reasonable and supportable information to inform credit loss estimates. The measurement of expected credit losses is based on relevant information about past events, including historical experience, current conditions, and reasonable and supportable forecasts that affect the collectability of the reported amount. An entity must use judgment in determining the relevant information and estimation methods that are appropriate in its circumstances. This amendment was effective for fiscal years beginning after December 15, 2019, including interim periods within those fiscal years. Entities should apply the amendment by means of a cumulative-effect adjustment to retained earnings as of the beginning of the fiscal year of adoption. ASU 2018-19 was issued to clarify that receivables arising from operating leases are not within the scope of Subtopic 326-20. Instead, impairment of receivables arising from operating leases should be accounted for in accordance with Topic 842, Leases. ASU 2019-04 was issued and provided entities alternatives for measurement of accrued interest receivable, clarified the steps entities should take when recording the transfer of loans or debt securities between measurement classifications or categories and clarifies that entities should include expected recoveries on financial assets. ASU 2019-05 was issued to provide entities that have certain instruments within the scope of Subtopic 320-20 with an option to irrevocably elect the fair value option in Subtopic 825-10. ASU 2020-02 was issued to further explain the measurement of current expected credit losses and the development, governance, and documentation of a systematic methodology. 1st Quarter 2020 The Corporation has adopted the Update using a modified retrospective approach. The Corporation has developed a CECL allowance model which calculates reserves over the life of the loan and is largely driven by portfolio characteristics, risk-grading, economic outlook, and key methodology assumptions. Those assumptions are based upon the existing probability of default and loss given default framework. At adoption, the Corporation utilized a single economic forecast over a 2-year reasonable and supportable forecast period. In the second year, the Corporation used straight-line reversion to historical losses. The Corporation recorded a $131 million adjustment to the ACL related to the adoption of this standard, which includes $61 thousand related to the held to maturity investment securities portfolio. The Corporation has elected to maintain pools accounted for under Subtopic 310-30 at adoption. The Corporation has elected to utilize the 2019 Capital Transition Relief for initial adoption, as well as the 2020 Capital Transition Relief as permitted under applicable regulations. The total impact at adoption equates to an approximately 29 bp net, after tax, reduction in the tangible common equity ratio. Results for the periods after January 1, 2020 are presented in accordance with ASC 326 while prior period amounts continue to be reported in accordance with previously applicable standards. Standard Description Date of adoption Effect on financial statements ASU 2018-13 Fair Value Measurement (Topic 820): Disclosure Framework—Changes to the Disclosure Requirements for Fair Value Measurement The FASB issued an amendment to add, modify, and remove disclosure requirements on fair value measurements in Topic 820, Fair Value Measurement, based on the FASB Concepts Statement "Conceptual Framework for Financial Reporting," including the consideration of costs and benefits. The amendment was effective for fiscal years, and interim periods within those fiscal years, beginning after December 15, 2019. The amendments on changes in unrealized gains and losses, the range and weighted average of significant unobservable inputs used to develop Level 3 fair value measurements, and the narrative description of measurement uncertainty should be applied prospectively for only the most recent interim or annual period presented in the initial fiscal year of adoption. All other amendments should be applied retrospectively to all periods presented upon their effective date. 1st Quarter 2020 The Corporation has evaluated and determined it has an immaterial impact with minor changes in presentation. ASU 2017-04 Intangibles - Goodwill and Other (Topic 350): Simplifying the Test for Goodwill Impairment The FASB issued an amendment to simplify the subsequent quantitative measurement of goodwill by eliminating step two from the goodwill impairment test. Instead, an entity will perform only step one of its quantitative goodwill impairment test by comparing the fair value of a reporting unit with its carrying amount, and then recognizing an impairment charge for the amount by which the carrying amount exceeds the reporting unit's fair value; however, the loss recognized should not exceed the total amount of goodwill allocated to that reporting unit. An entity will still have the option to perform a qualitative assessment for a reporting unit to determine if the quantitative step one impairment test is necessary. This amendment was effective for annual or interim goodwill impairment tests in fiscal years beginning after December 15, 2019. Entities should apply the amendment prospectively. 1st Quarter 2020 There has been no material impact on results of operations, financial position, and liquidity. The Corporation does its annual impairment testing in May. ASU 2020-03 Codification Improvements to Financial Instruments The FASB issued an amendment to further clarify that all entities are required to provide the fair value option disclosures in paragraphs 825-10-50-24 through 50-32. The amendment also states that paragraphs 820-10-35-2A(g) and 820-10-35-18L are to include the phrase nonfinancial items accounted for as derivatives under Topic 815 to be consistent with the previous amendments to Section 820-10-35 that were made by ASU No. 2018-09, Codification Improvements. The amendment also clarifies that the disclosure requirements in Topic 320 apply to the disclosure requirements in Topic 942 for depository and lending institutions along with improving the understandability of the guidance relating to subtopic 470-50 and subtopic 820-10. Lastly, the amendment clarifies that the contractual term of a net investment in a lease determined in accordance with Topic 842 should be the contractual term used to measure expected credit losses under Topic 326 and that when an entity regains control of financial assets sold, an ACL should be recorded in accordance with Topic 326. 1st Quarter 2020 The Corporation has evaluated and determined it has an immaterial impact. ASU 2020-04 Reference Rate Reform (Topic 848): Facilitation of the Effects of Reference Rate Reform on Financial Reporting The FASB issued an amendment to provide optional expedients and exceptions for applying GAAP to contracts, hedging relationships, and other transactions affected by reference rate reform if certain criteria are met. The amendment only applies to contracts, hedging relationships, and other transactions that reference LIBOR or another reference rate expected to be discontinued because of reference rate reform. The expedients and exceptions provided by the amendments do not apply to contract modifications made and hedging relationships entered into or evaluated after December 31, 2022, except for hedging relationships existing as of December 31, 2022, that an entity has elected certain optional expedients for and that are retained through the end of the hedging relationship. 1st Quarter 2020 The Corporation has evaluated the impact of the Update and determined the expedients provided allow for simpler, more streamlined modifications to the financial instruments referencing LIBOR. A small population of loans have been modified under the new standard. Future Accounting Pronouncements The expected impact of accounting pronouncements recently issued or proposed but not yet required to be adopted are displayed in the table below: Standard Description Date of anticipated adoption Effect on financial statements ASU 2018-14 The FASB issued an amendment to modify the disclosure requirements for employers that sponsor defined benefit pension or other postretirement plans. The amendments also added requirements to disclose the weighted-average interest crediting rates for cash balance plans and other plans with promised interest crediting rates and an explanation of the reasons for significant gains and losses related to changes in the benefit obligation for the period. The amendment also clarifies the disclosure requirements in paragraph 715-20-50-3, which states that certain information for defined benefit pension plans should be disclosed. The amendments in this Update remove disclosures that no longer are considered cost beneficial, clarify the specific requirements of disclosures, and add disclosure requirements identified as relevant. The amendment is effective for fiscal years ending after December 15, 2020. Entities should apply the amendments in this Update on a retrospective basis to all periods presented. Early adoption is permitted. 1st Quarter 2021 The Corporation is currently evaluating the impact on its results of operations, financial position, and liquidity. ASU 2020-01 Investments-Equity Securities (Topic 321), Investments-Equity Method and Joint Ventures (Topic 323), and Derivatives and Hedging (Topic 815) The FASB issued an amendment to clarify the interaction of the accounting for equity securities under Topic 321 and investments accounted for under the equity method of accounting in Topic 323 and the accounting for certain forward contracts and purchased options accounted for under Topic 815. The amendments clarify that an entity should consider observable transactions that require it to either apply or discontinue the equity method of accounting for the purposes of applying the measurement alternative in accordance with Topic 321 immediately before applying or upon discontinuing the equity method. The amendments also clarify that for the purpose of applying paragraph 815-10-15-141(a) an entity should not consider whether, upon the settlement of the forward contract or exercise of the purchased option, individually or with existing investments, the underlying securities would be accounted for under the equity method in Topic 323 or the fair value option in accordance with the financial instruments guidance in Topic 825. An entity also would evaluate the remaining characteristics in paragraph 815-010-15-141 to determine the accounting for those forward contracts and purchased options. 1st Quarter 2021 The Corporation is currently evaluating the impact on its results of operations, financial position, and liquidity.

Earnings Per Common Share

Earnings Per Common Share	6 Months Ended
	Jun. 30, 2020
Earnings Per Share [Abstract]
Earnings Per Common Share	Earnings Per Common Share Earnings per common share are calculated utilizing the two-class method. Basic earnings per common share are calculated by dividing the sum of distributed earnings to common shareholders and undistributed earnings allocated to common shareholders by the weighted average number of common shares outstanding. Diluted earnings per common share are calculated by dividing the sum of distributed earnings to common shareholders and undistributed earnings allocated to common shareholders by the weighted average number of common shares outstanding adjusted for the dilutive effect of common stock awards (outstanding stock options and unvested restricted stock awards). Presented below are the calculations for basic and diluted earnings per common share: Three Months Ended June 30, Six Months Ended June 30, (In Thousands, except per share data) 2020 2019 2020 2019 Net income $ 148,718 $ 84,661 $ 194,555 $ 171,347 Preferred stock dividends (4,144) (3,801) (7,945) (7,601) Net income available to common equity $ 144,573 $ 80,860 $ 186,611 $ 163,746 Common shareholder dividends (27,667) (27,571) (55,931) (55,650) Unvested share-based payment awards (222) (205) (351) (308) Undistributed earnings $ 116,684 $ 53,085 $ 130,329 $ 107,787 Undistributed earnings allocated to common shareholders $ 115,750 $ 52,690 $ 129,377 $ 107,098 Undistributed earnings allocated to unvested share-based payment awards 934 395 953 689 Undistributed earnings $ 116,684 $ 53,085 $ 130,329 $ 107,787 Basic Distributed earnings to common shareholders $ 27,667 $ 27,571 $ 55,931 $ 55,650 Undistributed earnings allocated to common shareholders 115,750 52,690 129,377 107,098 Total common shareholders earnings, basic $ 143,417 $ 80,261 $ 185,307 $ 162,748 Diluted Distributed earnings to common shareholders $ 27,667 $ 27,571 $ 55,931 $ 55,650 Undistributed earnings allocated to common shareholders 115,750 52,690 129,377 107,098 Total common shareholders earnings, diluted $ 143,417 $ 80,261 $ 185,307 $ 162,748 Weighted average common shares outstanding 152,393 162,180 153,547 163,049 Effect of dilutive common stock awards 757 1,492 813 1,469 Diluted weighted average common shares outstanding 153,150 163,672 154,360 164,518 Basic earnings per common share $ 0.94 $ 0.49 $ 1.21 $ 1.00 Diluted earnings per common share $ 0.94 $ 0.49 $ 1.20 $ 0.99 Non-dilutive common stock options of approximately 8 million and 4 million for the three months ended June 30, 2020 and 2019, respectively, and 7 million and 3 million for the six months ended June 30, 2020 and 2019, respectively, were excluded from the earnings per common share calculation.

Stock-Based Compensation

Stock-Based Compensation	6 Months Ended
	Jun. 30, 2020
Retirement Benefits [Abstract]
Stock-Based Compensation	Stock-Based Compensation The fair value of stock options granted is estimated on the date of grant using a Black-Scholes option pricing model, while the fair value of restricted stock awards is their fair market value on the date of grant. The fair values of stock options and restricted stock awards are amortized as compensation expense on a straight-line basis over the vesting period of the grants. For retirement eligible colleagues, whose employment meets the definitions under the 2017 Incentive Compensation Plan, and subsequent 2020 Incentive Compensation Plan, expenses related to stock options and restricted stock awards are fully recognized on the date the colleague meets the definition of normal or early retirement. Compensation expense recognized is included in personnel expense on the consolidated statements of income. Assumptions are used in estimating the fair value of stock options granted. The weighted average expected life of the stock option represents the period of time stock options are expected to be outstanding and is estimated using historical data of stock option exercises and forfeitures. The risk-free interest rate is based on the U.S. Treasury yield curve in effect at the time of grant. The expected volatility is based on the implied volatility of the Corporation’s stock. The following assumptions were used in estimating the fair value for options granted in the first six months of 2020 and full year 2019: 2020 2019 Dividend yield 3.50 % 3.30 % Risk-free interest rate 1.60 % 2.60 % Weighted average expected volatility 21.00 % 24.00 % Weighted average expected life 5.75 years 5.75 years Weighted average per share fair value of options $2.39 $4.00 A summary of the Corporation’s stock option activity for the six months ended June 30, 2020 is presented below: Stock Options Shares (a) Weighted Average Weighted Average Remaining Contractual Term Aggregate Intrinsic Value (a) Outstanding at December 31, 2019 5,543 $ 20.13 6.25 years $ 16,043 Granted 1,697 18.43 Exercised (110) 13.95 Forfeited or expired (219) 22.30 Outstanding at June 30, 2020 6,911 $ 19.74 6.73 years $ 213 Options Exercisable at June 30, 2020 4,242 $ 19.21 5.32 years $ 213 (a) In thousands Intrinsic value represents the amount by which the fair market value of the underlying stock exceeds the exercise price of the stock option. For the six months ended June 30, 2020, the intrinsic value of stock options exercised was less than $1 million compared to $3 million for the six months ended June 30, 2019. The total fair value of stock options vested was $3 million for the six months ended June 30, 2020, compared to $4 million for the six months ended June 30, 2019. The Corporation recognized compensation expense for the vesting of stock options of $3 million for both the six months ended June 30, 2020 and June 30, 2019. Included in compensation expense for 2020 was approximately $1 million of expense for the accelerated vesting of stock options granted to retirement eligible colleagues. At June 30, 2020, the Corporation had approximately $4 million of unrecognized compensation expense related to stock options that is expected to be recognized over the remaining requisite service periods that extend predominately through the first quarter of 2024 . The Corporation also has issued time-based and performance-based restricted stock awards under the 2017 Incentive Compensation Plan and subsequent 2020 Incentive Compensation Plan. Performance awards are based on performance goals of earnings per share and total shareholder return with vesting ranging from a minimum of 0% to a maximum of 150% of the target award. Performance awards are valued utilizing a Monte Carlo simulation model to estimate fair value of the awards at the grant date. The following table summarizes information about the Corporation’s restricted stock awards activity for the six months ended June 30, 2020: Restricted Stock Awards Shares (a) Weighted Average Outstanding at December 31, 2019 2,393 $ 22.39 Granted 1,032 18.38 Vested (804) 23.05 Forfeited (72) 22.64 Outstanding at June 30, 2020 2,550 $ 20.56 (a) In thousands The Corporation amortizes the expense related to restricted stock awards as compensation expense over the vesting period specified in the grant's award agreement. Performance-based restricted stock awards granted during 2019 and 2020 will vest ratably over a period of three years. Service-based restricted stock awards granted during 2019 and 2020 will vest ratably over a period of four years. Expense for restricted stock awards issued of approximately $12 million was recorded for the six months ended June 30, 2020 and $13 million was recorded for the six months ended June 30, 2019. Included in compensation expense for the first six months of 2020 was approximately $5 million of expense for the accelerated vesting of restricted stock awards granted to retirement eligible colleagues. The Corporation had $23 million of unrecognized compensation costs related to restricted stock awards at June 30, 2020 that are expected to be recognized over the remaining requisite service periods that extend predominately through the first quarter of 2024. At the Corporation’s 2020 Annual Meeting of Shareholders held on April 28, 2020, the Corporation’s shareholders approved the Associated Banc-Corp 2020 Incentive Compensation Plan, which provides for various types of awards to the Company’s executive officers, employees, consultants and non-employee directors, including, among others, stock options, restricted stock, restricted stock units and performance units. The Corporation has the ability to issue shares from treasury or new shares upon the exercise of stock options or the granting of restricted stock awards. The Board of Directors has authorized management to repurchase shares of the Corporation’s common stock in the market, to be made available for issuance in connection with the Corporation’s employee incentive plans and for other corporate purposes. The repurchase of shares will be based on market and investment opportunities, capital levels, growth prospects, and regulatory constraints. Such repurchases may occur from time to time in open market purchases, block transactions, private transactions, accelerated share repurchase programs, or similar facilities.

Investment Securities

Investment Securities	6 Months Ended
	Jun. 30, 2020
Investments, Debt and Equity Securities [Abstract]
Investment Securities	Investment Securities Investment securities are classified as available for sale, held to maturity, or equity on the consolidated balance sheets at the time of purchase. The amortized cost and fair values of securities available for sale and held to maturity at June 30, 2020 were as follows: ($ in Thousands) Amortized Gross Gross Fair Value Investment securities available for sale U. S. Treasury securities $ 26,646 $ 88 $ — $ 26,735 Agency securities 24,982 25 — 25,007 Obligations of state and political subdivisions (municipal securities) 471,346 24,542 — 495,888 Residential mortgage-related securities FNMA / FHLMC 813,458 4,652 — 818,110 GNMA 592,338 13,222 — 605,561 Commercial mortgage-related securities FNMA / FHLMC 19,793 2,269 — 22,061 GNMA 782,577 20,786 — 803,362 Asset backed securities FFELP 356,532 — (16,058) 340,474 SBA 9,619 — (44) 9,575 Other debt securities 3,000 — — 3,000 Total investment securities available for sale $ 3,100,291 $ 65,584 $ (16,102) $ 3,149,773 Investment securities held to maturity U. S. Treasury securities $ 999 $ 36 $ — $ 1,036 Obligations of state and political subdivisions (municipal securities) 1,435,938 110,132 (53) 1,546,018 Residential mortgage-related securities FNMA / FHLMC 71,872 3,400 — 75,271 GNMA 207,908 7,012 — 214,920 GNMA commercial mortgage-related securities 360,570 11,691 — 372,261 Total investment securities held to maturity $ 2,077,287 $ 132,271 $ (53) $ 2,209,505 The amortized cost and fair values of securities available for sale and held to maturity at December 31, 2019 were as follows: ($ in Thousands) Amortized Gross Gross Fair Value Investment securities available for sale Obligations of state and political subdivisions (municipal securities) $ 529,908 $ 16,269 $ (18) $ 546,160 Residential mortgage-related securities FNMA / FHLMC 131,158 1,562 (59) 132,660 GNMA 982,941 3,887 (1,689) 985,139 Commercial mortgage-related securities FNMA / FHLMC 19,929 1,799 — 21,728 GNMA 1,314,836 7,403 (12,032) 1,310,207 FFELP asset backed securities 270,178 — (6,485) 263,693 Other debt securities 3,000 — — 3,000 Total investment securities available for sale $ 3,251,950 $ 30,920 $ (20,284) $ 3,262,586 Investment securities held to maturity U. S. Treasury securities $ 999 $ 19 $ — $ 1,018 Obligations of state and political subdivisions (municipal securities) 1,418,569 69,775 (1,118) 1,487,227 Residential mortgage-related securities FNMA / FHLMC 81,676 1,759 (15) 83,420 GNMA 269,523 1,882 (1,108) 270,296 GNMA commercial mortgage-related securities 434,317 6,308 (6,122) 434,503 Total investment securities held to maturity $ 2,205,083 $ 79,744 $ (8,363) $ 2,276,465 Expected maturities may differ from contractual maturities because borrowers may have the right to call or prepay obligations with or without call or prepayment penalties. The expected maturities of investment securities available for sale and held to maturity at June 30, 2020 are shown below: Available for Sale Held to Maturity ($ in Thousands) Amortized Fair Amortized Fair Due in one year or less $ 9,427 $ 9,458 $ 33,745 $ 33,927 Due after one year through five years 83,136 83,882 67,917 69,887 Due after five years through ten years 343,084 360,051 166,553 175,189 Due after ten years 90,327 97,240 1,168,722 1,268,050 Total debt securities 525,975 550,630 1,436,937 1,547,053 Residential mortgage-related securities FNMA / FHLMC 813,458 818,110 71,872 75,271 GNMA 592,338 605,561 207,908 214,920 Commercial mortgage-related securities FNMA / FHLMC 19,793 22,061 — — GNMA 782,577 803,362 360,570 372,261 Asset backed securities FFELP 356,532 340,474 — — SBA 9,619 9,575 — — Total investment securities $ 3,100,291 $ 3,149,773 $ 2,077,287 $ 2,209,505 Ratio of fair value to amortized cost 101.6 % 106.4 % On a quarterly basis, the Corporation refreshes the credit quality of each held to maturity security. The following table summarizes the credit quality indicators of held to maturity securities at amortized cost at June 30, 2020: ($ in Thousands) AAA AA A Total U. S. Treasury securities $ 999 $ — $ — $ 999 Obligations of state and political subdivisions (municipal securities) 561,670 853,910 20,358 1,435,938 Residential mortgage-related securities FNMA/FHLMC 71,872 — — 71,872 GNMA 207,908 — — 207,908 GNMA commercial mortgage-related securities 360,570 — — 360,570 Total held to maturity securities $ 1,203,018 $ 853,910 $ 20,358 $ 2,077,287 Investment securities gains (losses), net includes proceeds from the sale of investment securities as well as any applicable write-ups or write-downs of investment securities. The proceeds from the sale of investment securities for the three and six months ended June 30, 2020 and 2019 are shown below: Three Months Ended June 30, Six Months Ended June 30, ($ in Thousands) 2020 2019 2020 2019 Gross gains on available for sale securities $ 3,106 $ 654 $ 9,304 $ 2,334 Gross gains on held to maturity securities — — — — Total gains 3,106 654 9,304 2,334 Gross (losses) on available for sale securities (11) (13,636) (90) (13,636) Gross (losses) on held to maturity securities — — — — Total (losses) (11) (13,636) (90) (13,636) Write-up of equity securities without readily determinable fair values — 13,444 — 13,444 Investment securities gains (losses), net $ 3,096 $ 463 $ 9,214 $ 2,143 Proceeds from sales of investment securities $ 261,037 $ 803,105 $ 626,276 $ 934,228 During the second quarter of 2020, the Corporation sold $261 million of less liquid securities at a gain of $3 million, reinvesting the proceeds into more liquid securities in order to further improve portfolio liquidity. During the first quarter of 2020, the Corporation sold $281 million of primarily prepayment sensitive mortgage-related securities at a gain of $6 million. Additionally, in February 2020, the Corporation sold $84 million of certain securities acquired in the First Staunton acquisition that did not fit the parameters of the Corporation's current investment strategy. During the first six months of 2019, the Corporation sold $934 million of taxable floating rate ABS and shorter duration MBS, and CMO Agency securities, with the proceeds utilized to pay down borrowings and to reinvest into higher yielding Agency related mortgage securities with slightly longer durations, repositioning the portfolio for a stable to declining rate environment. The Corporation also donated 42,039 shares of Visa Class B restricted shares to the Corporation's Charitable Remainder Trust during the second quarter of 2019, and the subsequent sale of those shares by the Trust resulted in an observable market price. As a result, the Corporation wrote up its remaining 77,000 Visa Class B restricted shares to fair value. Based on the existing transfer restriction and the uncertainty of covered litigation, the shares were previously carried at a zero cost basis. Investment securities with a carrying value of approximately $1.9 billion and $2.6 billion at June 30, 2020 and December 31, 2019, respectively, were pledged to secure certain deposits or for other purposes as required or permitted by law. Accrued interest receivable on held to maturity securities totaled $15 million and $16 million at June 30, 2020 and December 31, 2019, respectively. Accrued interest receivable on available for sale securities totaled $9 million and $10 million at June 30, 2020 and December 31, 2019, respectively. Accrued interest receivable on both held to maturity and available for sale securities is included in interest receivable on the consolidated balance sheets. There was no interest income reversed for investments going into nonaccrual at June 30, 2020 or December 31, 2019. A security is considered past due once it is 30 days contractually past due under the terms of the agreement. At June 30, 2020, the Corporation had no past due held to maturity securities. The allowance for credit losses on held to maturity securities was approximately $61,000 at June 30, 2020, attributable entirely to the Corporation's municipal securities, included in investment securities held to maturity, net, at amortized cost on the consolidated balance sheets . The Corporation also holds U.S. Treasury and residential mortgage-related securities issued by the U.S. government or a GSE which are backed by the full faith and credit of the U.S. government and, as a result, no allowance for credit losses has been recorded related to these securities. The following represents gross unrealized losses and the related fair value of investment securities available for sale and held to maturity, aggregated by investment category and length of time individual securities have been in a continuous unrealized loss position, at June 30, 2020: Less than 12 months 12 months or more Total ($ in Thousands) Number Unrealized Fair Number Unrealized Fair Unrealized Fair Investment securities available for sale Obligations of state and political subdivisions (municipal securities) 1 $ — $ 548 — $ — $ — $ — $ 548 FNMA / FHLMC residential mortgage-related securities 5 — 54,893 — — — — 54,893 Asset backed securities FFELP 9 (5,478) 147,310 17 (10,580) 193,164 (16,058) 340,474 SBA 15 (44) 9,422 — — — (44) 9,422 Total 30 $ (5,522) $ 212,172 17 $ (10,580) $ 193,164 $ (16,102) $ 405,336 Investment securities held to maturity Obligations of state and political subdivisions (municipal securities) 8 $ (52) $ 12,431 2 $ (1) $ 365 $ (53) $ 12,796 Total 8 $ (52) $ 12,431 2 $ (1) $ 365 $ (53) $ 12,796 For comparative purposes, the following represents gross unrealized losses and the related fair value of investment securities available for sale and held to maturity, aggregated by investment category and length of time that individual securities have been in a continuous unrealized loss position, at December 31, 2019: Less than 12 months 12 months or more Total ($ in Thousands) Number Unrealized Fair Number Unrealized Fair Unrealized Fair Investment securities available for sale Obligations of state and political subdivisions (municipal securities) 4 $ (18) $ 1,225 — $ — $ — $ (18) $ 1,225 Residential mortgage-related securities FNMA / FHLMC — — — 4 (59) 34,807 (59) 34,807 GNMA 18 (924) 322,394 3 (766) 79,461 (1,689) 401,856 GNMA commercial mortgage-related securities 22 (810) 258,218 42 (11,222) 621,307 (12,032) 879,524 FFELP asset backed securities 19 (6,092) 250,780 2 (393) 12,913 (6,485) 263,693 Other debt securities 2 — 2,000 — — — — 2,000 Total 65 $ (7,843) $ 834,616 51 $ (12,440) $ 748,487 $ (20,284) $ 1,583,104 Investment securities held to maturity Obligations of state and political subdivisions (municipal securities) 52 $ (1,105) $ 77,562 6 $ (13) $ 2,378 $ (1,118) $ 79,940 Residential mortgage-related securities FNMA / FHLMC 1 (6) 1,242 1 (9) 833 (15) 2,075 GNMA 12 (1,059) 187,261 8 (49) 6,587 (1,108) 193,849 GNMA commercial mortgage-related securities 2 (29) 26,202 21 (6,093) 357,733 (6,122) 383,935 Total 67 $ (2,199) $ 292,267 36 $ (6,164) $ 367,532 $ (8,363) $ 659,799 The Corporation reviews the available for sale investment securities portfolio on a quarterly basis to monitor its credit exposure. A determination as to whether a security’s decline in fair value is the result of credit risk takes into consideration numerous factors and the relative significance of any single factor can vary by security. Some factors the Corporation may consider in the impairment analysis include the extent to which the security has been in an unrealized loss position, the change in security rating, financial condition and near-term prospects of the issuer, as well as the security and industry specific economic conditions. Based on the Corporation’s evaluation, management does not believe any available for sale securities in an unrealized loss position at June 30, 2020 represent credit deterioration as these unrealized losses are primarily attributable to changes in interest rates and the current market conditions. The fair value of municipal securities, which pertains to various state and local political subdivisions and school districts, has increased due to the decrease in overall interest rates, resulting in lower unrealized losses at June 30, 2020. The U.S. Treasury 3 year and 5 year rates decreased by 144 bp and 140 bp, respectively, from December 31, 2019. The Corporation does not intend to sell nor does it believe that it will be required to sell the securities in an unrealized loss position before recovery of their amortized cost basis. FHLB and Federal Reserve Bank stocks: The Corporation is required to maintain Federal Reserve Bank stock and FHLB stock as a member of both the Federal Reserve System and the FHLB, and in amounts as required by these institutions. These equity securities are “restricted” in that they can only be sold back to the respective institutions or another member institution at par. Therefore, they are less liquid than other marketable equity securities and their fair value is equal to amortized cost. At June 30, 2020 and December 31, 2019, the Corporation had FHLB stock of $126 million and $149 million, respectively. The Corporation had Federal Reserve Bank stock of $81 million and $78 million at June 30, 2020 and December 31, 2019, respectively. Accrued interest receivable on FHLB stock totaled $2 million at both June 30, 2020 and December 31, 2019. There was no accrued interest receivable on Federal Reserve Bank stock at either June 30, 2020 or December 31, 2019. Accrued interest receivable on both FHLB stock and Federal Reserve Bank stock is included in interest receivable on the consolidated balance sheets. Equity Securities Equity securities with readily determinable fair values: The Corporation's portfolio of equity securities with readily determinable fair values is primarily comprised of CRA Qualified Investment mutual funds. At both June 30, 2020 and December 31, 2019, the Corporation had equity securities with readily determinable fair values of $2 million.

Loans

Loans	6 Months Ended
	Jun. 30, 2020
Receivables [Abstract]
Loans	Loans The period end loan composition was as follows: ($ in Thousands) June 30, 2020 December 31, 2019 PPP $ 1,012,033 $ — Commercial and industrial 7,968,709 7,354,594 Commercial real estate — owner occupied 914,385 911,265 Commercial and business lending 9,895,127 8,265,858 Commercial real estate — investor 4,174,125 3,794,517 Real estate construction 1,708,189 1,420,900 Commercial real estate lending 5,882,314 5,215,417 Total commercial 15,777,441 13,481,275 Residential mortgage 7,933,518 8,136,980 Home equity 795,671 852,025 Other consumer 326,040 351,159 Total consumer 9,055,230 9,340,164 Total loans $ 24,832,671 $ 22,821,440 Accrued interest receivable on loans totaled $60 million at June 30, 2020, and $63 million at December 31, 2019 and is included in interest receivable on the consolidated balance sheets. Interest accrued but not received for loans placed on nonaccrual is reversed against interest income. The amount of accrued interest reversed totaled $1 million for both the three and six months ended June 30, 2020. The following table presents commercial and consumer loans by credit quality indicator by vintage year at June 30, 2020: Term Loans Amortized Cost Basis by Origination Year (a) ($ in Thousands) Rev Loans Converted to Term (a) Rev Loans Amortized Cost Basis YTD 2020 2019 2018 2017 2016 Prior Total PPP: (b) Risk rating: Pass $ — $ — $ 985,462 $ — $ — $ — $ — $ — $ 985,462 Special Mention — — 7,409 — — — — — 7,409 Potential Problem — — 19,161 — — — — — 19,161 Paycheck Protection Program $ — $ — $ 1,012,033 $ — $ — $ — $ — $ — $ 1,012,033 Commercial and industrial: Risk rating: Pass $ 20 $ 1,832,797 $ 929,266 $ 1,759,308 $ 1,650,024 $ 597,967 $ 361,006 $ 531,995 $ 7,662,364 Special Mention — 12,802 379 23,783 7,299 15 5,541 17 49,836 Potential Problem (c) 517 12,963 17,235 16,544 66,699 52,176 8,492 2,162 176,270 Nonaccrual (d) 14,465 — 1,597 7,140 188 24,550 16,624 30,141 80,239 Commercial and industrial $ 15,003 $ 1,858,562 $ 948,477 $ 1,806,776 $ 1,724,210 $ 674,708 $ 391,662 $ 564,314 $ 7,968,709 Commercial real estate - owner occupied: Risk rating: Pass $ 1,150 $ 17,897 $ 94,106 $ 213,234 $ 131,748 $ 121,963 $ 166,366 $ 111,790 $ 857,103 Special Mention — — 2,450 16,317 12,776 128 2,439 5,321 39,432 Potential Problem — 77 661 1,409 1,923 2,461 6,106 3,281 15,919 Nonaccrual — — — — 223 335 — 1,374 1,932 Commercial real estate - owner occupied $ 1,150 $ 17,973 $ 97,217 $ 230,960 $ 146,670 $ 124,887 $ 174,911 $ 121,768 $ 914,385 Commercial and business lending: Risk rating: Pass $ 1,170 $ 1,850,694 $ 2,008,834 $ 1,972,542 $ 1,781,772 $ 719,930 $ 527,371 $ 643,786 $ 9,504,929 Special Mention — 12,802 10,239 40,100 20,075 143 7,979 5,338 96,677 Potential Problem (c) 517 13,040 37,058 17,953 68,622 54,637 14,598 5,443 211,350 Nonaccrual (d) 14,465 — 1,597 7,140 411 24,884 16,624 31,515 82,171 Commercial and business lending $ 16,153 $ 1,876,535 $ 2,057,727 $ 2,037,736 $ 1,870,880 $ 799,595 $ 566,572 $ 686,082 $ 9,895,127 Commercial real estate - investor: Risk rating: Pass $ — $ 176,047 $ 847,031 $ 1,083,145 $ 836,244 $ 378,098 $ 400,279 $ 288,644 $ 4,009,488 Special Mention — — 12,886 4,869 17,098 3,686 17,180 9,509 65,228 Potential Problem — 803 14,703 52,762 3,313 314 1,796 14,547 88,237 Nonaccrual 446 — 395 10,256 446 — — 75 11,172 Commercial real estate - investor $ 446 $ 176,850 $ 875,014 $ 1,151,033 $ 857,101 $ 382,098 $ 419,255 $ 312,775 $ 4,174,125 Real estate construction: Risk rating: Pass $ — $ 67,584 $ 279,683 $ 810,738 $ 434,146 $ 69,790 $ 3,095 $ 22,066 $ 1,687,100 Special Mention — — — — 18,402 — — 12 18,414 Potential Problem — — — 211 358 1,557 — 45 2,170 Nonaccrual — — — — — — — 503 503 Real estate construction $ — $ 67,584 $ 279,683 $ 810,949 $ 452,906 $ 71,346 $ 3,095 $ 22,627 $ 1,708,189 Commercial real estate lending: Risk rating: Pass $ — $ 243,630 $ 1,126,713 $ 1,893,883 $ 1,270,390 $ 447,888 $ 403,374 $ 310,710 $ 5,696,589 Special Mention — — 12,886 4,869 35,500 3,686 17,180 9,522 83,643 Potential Problem — 803 14,703 52,973 3,670 1,870 1,796 14,592 90,407 Nonaccrual 446 — 395 10,256 446 — — 578 11,675 Commercial real estate lending $ 446 $ 244,433 $ 1,154,696 $ 1,961,982 $ 1,310,007 $ 453,444 $ 422,349 $ 335,402 $ 5,882,314 Term Loans Amortized Cost Basis by Origination Year (a) ($ in Thousands) Rev Loans Converted to Term (a) Rev Loans Amortized Cost Basis YTD 2020 2019 2018 2017 2016 Prior Total Total commercial: Risk rating: Pass $ 1,170 $ 2,094,324 $ 3,135,547 $ 3,866,425 $ 3,052,162 $ 1,167,818 $ 930,746 $ 954,496 $ 15,201,517 Special Mention — 12,802 23,125 44,969 55,576 3,829 25,159 14,860 180,320 Potential Problem 517 13,843 51,760 70,927 72,292 56,507 16,393 20,035 301,758 Nonaccrual 14,911 — 1,992 17,397 857 24,884 16,624 32,093 93,846 Total commercial $ 16,599 $ 2,120,969 $ 3,212,424 $ 3,999,718 $ 3,180,887 $ 1,253,039 $ 988,922 $ 1,021,484 $ 15,777,441 Residential mortgage: Risk rating: Pass $ — $ 90 $ 943,953 $ 1,726,616 $ 766,921 $ 1,274,176 $ 1,160,820 $ 1,990,617 $ 7,863,194 Special Mention — — — — 270 — 36 206 511 Potential Problem — — 780 707 205 212 226 1,028 3,157 Nonaccrual — — 1,758 3,659 6,953 8,434 10,798 35,055 66,656 Residential mortgage $ — $ 90 $ 946,490 $ 1,730,982 $ 774,348 $ 1,282,822 $ 1,171,880 $ 2,026,905 $ 7,933,518 Home equity: Risk rating: Pass $ 2,005 $ 631,366 $ 1,746 $ 16,439 $ 21,034 $ 15,073 $ 7,510 $ 88,904 $ 782,073 Special Mention 233 199 — — 16 24 — 610 849 Potential Problem — 1,775 — — — — — 146 1,921 Nonaccrual 586 673 297 124 491 387 233 8,623 10,829 Home equity $ 2,824 $ 634,013 $ 2,044 $ 16,564 $ 21,541 $ 15,484 $ 7,743 $ 98,282 $ 795,671 Other consumer: Risk rating: Pass $ 15 $ 168,601 $ 4,497 $ 14,764 $ 5,581 $ 2,811 $ 2,015 $ 126,920 $ 325,190 Special Mention 1 530 — 30 6 — — 7 574 Nonaccrual 7 84 10 53 22 — 78 30 276 Other consumer $ 22 $ 169,215 $ 4,507 $ 14,847 $ 5,610 $ 2,811 $ 2,094 $ 126,957 $ 326,040 Total consumer: Risk rating: Pass $ 2,020 $ 800,057 $ 950,196 $ 1,757,820 $ 793,537 $ 1,292,060 $ 1,170,346 $ 2,206,441 $ 8,970,456 Special Mention 234 729 — 30 292 24 36 823 1,934 Potential Problem — 1,775 780 707 205 212 226 1,174 5,078 Nonaccrual 593 757 2,065 3,836 7,466 8,821 11,110 43,707 77,761 Total consumer $ 2,846 $ 803,318 $ 953,041 $ 1,762,393 $ 801,499 $ 1,301,117 $ 1,181,717 $ 2,252,145 $ 9,055,230 Total loans: Risk rating: Pass $ 3,190 $ 2,894,381 $ 4,085,744 $ 5,624,245 $ 3,845,698 $ 2,459,878 $ 2,101,091 $ 3,160,936 $ 24,171,974 Special Mention 234 13,531 23,125 44,999 55,868 3,854 25,195 15,683 182,254 Potential Problem 517 15,618 52,540 71,634 72,497 56,719 16,619 21,209 306,836 Nonaccrual 15,504 757 4,056 21,232 8,323 33,705 27,733 75,800 171,607 Total loans $ 19,445 $ 2,924,286 $ 4,165,465 $ 5,762,111 $ 3,982,386 $ 2,554,155 $ 2,170,639 $ 3,273,628 $ 24,832,671 (a) Revolving loans converted to term loans are also reported in their year of origination (b) The Corporation’s policy is to assign risk ratings at the borrower level. PPP loans are 100% guaranteed by the SBA and therefore the Corporation considers these loans to have a risk profile similar to pass rated loans. (c) Includes $63 million of oil and gas related loans (d) Includes $50 million of oil and gas related loans The following table presents commercial and consumer loans by credit quality indicator at December 31, 2019 : ($ in Thousands) Pass Special Mention Potential Problem Nonaccrual Total Commercial and industrial $ 7,118,448 $ 79,525 $ 110,308 $ 46,312 $ 7,354,594 Commercial real estate - owner occupied 866,193 25,115 19,889 67 911,265 Commercial and business lending 7,984,641 104,641 130,197 46,380 8,265,858 Commercial real estate - investor 3,620,785 139,873 29,449 4,409 3,794,517 Real estate construction 1,420,374 33 — 493 1,420,900 Commercial real estate lending 5,041,159 139,906 29,449 4,902 5,215,417 Total commercial 13,025,800 244,547 159,646 51,282 13,481,275 Residential mortgage 8,077,122 563 1,451 57,844 8,136,980 Home equity 841,757 1,164 — 9,104 852,025 Other consumer 350,260 748 — 152 351,159 Total consumer 9,269,139 2,475 1,451 67,099 9,340,164 Total loans $ 22,294,939 $ 247,022 $ 161,097 $ 118,380 $ 22,821,440 Factors that are important to managing overall credit quality are sound loan underwriting and administration, systematic monitoring of existing loans and commitments, effective loan review on an ongoing basis, early identification of potential problems, and appropriate allowance for loan losses, allowance for unfunded commitments, nonaccrual, and charge off policies. For commercial loans, management has determined the pass credit quality indicator to include credits exhibiting acceptable financial statements, cash flow, and leverage. If any risk exists, it is mitigated by the loan structure, collateral, monitoring, or control. For consumer loans, performing loans include credits performing in accordance with the original contractual terms. Loans are considered past due if the required principal and interest payments have not been received as of the date such payments were due. Special mention credits have potential weaknesses that deserve management’s attention. If left uncorrected, these potential weaknesses may result in deterioration of the repayment prospects for the credit. Potential problem loans are considered inadequately protected by the current net worth and paying capacity of the obligor or the collateral pledged. These loans generally have a well-defined weakness, or weaknesses, which may jeopardize liquidation of the debt, and are characterized by the distinct possibility the Corporation will sustain some loss if the deficiencies are not corrected. Management has determined commercial loan relationships in nonaccrual status and commercial and consumer loan relationships with their terms restructured in a TDR meet the criteria to be individually evaluated. Commercial loans classified as special mention, potential problem, and nonaccrual are reviewed at a minimum on a quarterly basis, while pass and performing rated credits are generally reviewed on an annual basis or more frequently if the loan renewal is less than one year or if otherwise warranted. The following table presents loans by past due status at June 30, 2020: Accruing ($ in Thousands) Current (a) 30-59 Days 60-89 Days 90 Days or Nonaccrual (b)(c) Total PPP $ 1,012,033 $ — $ — $ — $ — $ 1,012,033 Commercial and industrial 7,887,369 274 442 385 80,239 7,968,709 Commercial real estate - owner occupied 912,254 199 — — 1,932 914,385 Commercial and business lending 9,811,656 473 442 385 82,171 9,895,127 Commercial real estate - investor 4,149,079 2,886 10,989 — 11,172 4,174,125 Real estate construction 1,707,300 373 12 — 503 1,708,189 Commercial real estate lending 5,856,379 3,259 11,001 — 11,675 5,882,314 Total commercial 15,668,035 3,732 11,443 385 93,846 15,777,441 Residential mortgage 7,863,839 2,789 233 — 66,656 7,933,518 Home equity 781,735 2,259 849 — 10,829 795,671 Other consumer 323,201 883 599 1,081 276 326,040 Total consumer 8,968,775 5,932 1,681 1,081 77,761 9,055,230 Total loans $ 24,636,810 $ 9,664 $ 13,125 $ 1,466 $ 171,607 $ 24,832,671 (a) Any deferred loans related to COVID-19 are considered current in accordance with Section 4013 of the CARES Act. (b) Of the total nonaccrual loans, $117 million, or 68%, were current with respect to payment at June 30, 2020. (c) No interest income was recognized on nonaccrual loans for both the three and six months ended June 30, 2020. In addition, there were $91 million of nonaccrual loans for which there was no related ACLL at June 30, 2020. The following table presents loans by past due status at December 31, 2019: Accruing ($ in Thousands) Current 30-59 Days 60-89 Days 90 Days or Nonaccrual (a) Total Commercial and industrial $ 7,307,118 $ 576 $ 245 $ 342 $ 46,312 $ 7,354,594 Commercial real estate - owner occupied 909,828 1,369 — — 67 911,265 Commercial and business lending 8,216,947 1,945 245 342 46,380 8,265,858 Commercial real estate - investor 3,788,296 1,812 — — 4,409 3,794,517 Real estate construction 1,420,310 64 33 — 493 1,420,900 Commercial real estate lending 5,208,606 1,876 33 — 4,902 5,215,417 Total commercial 13,425,552 3,821 278 342 51,282 13,481,275 Residential mortgage 8,069,863 8,749 525 — 57,844 8,136,980 Home equity 837,274 4,483 1,164 — 9,104 852,025 Other consumer 347,007 1,135 949 1,917 152 351,159 Total consumer 9,254,144 14,366 2,638 1,917 67,099 9,340,164 Total loans $ 22,679,696 $ 18,188 $ 2,916 $ 2,259 $ 118,380 $ 22,821,440 (a) Of the total nonaccrual loans, $48 million, or 41%, were current with respect to payment at December 31, 2019. The following table presents impaired loans individually evaluated under ASC Topic 310, excluding $2 million of purchased credit-impaired loans, at December 31, 2019 : ($ in Thousands) Recorded Unpaid Related Average Interest Loans with a related allowance Commercial and industrial $ 47,249 $ 63,346 $ 12,010 $ 45,290 $ 1,832 Commercial real estate — owner occupied 1,676 1,682 19 1,774 88 Commercial and business lending 48,924 65,028 12,029 47,064 1,919 Commercial real estate — investor 928 2,104 15 950 15 Real estate construction 477 559 67 494 30 Commercial real estate lending 1,405 2,663 82 1,445 45 Total commercial 50,329 67,691 12,111 48,509 1,965 Residential mortgage 21,450 22,625 2,740 23,721 856 Home equity 3,076 3,468 1,190 3,756 191 Other consumer 1,247 1,249 125 1,250 1 Total consumer 25,773 27,342 4,055 28,726 1,047 Total loans with a related allowance $ 76,102 $ 95,033 $ 16,165 $ 77,235 $ 3,012 Loans with no related allowance Commercial and industrial $ 14,787 $ 33,438 $ — $ 20,502 $ 63 Commercial real estate — owner occupied — — — — — Commercial and business lending 14,787 33,438 — 20,502 63 Commercial real estate — investor 3,705 3,705 — 3,980 159 Real estate construction — — — — — Commercial real estate lending 3,705 3,705 — 3,980 159 Total commercial 18,491 37,142 — 24,482 222 Residential mortgage 14,104 14,461 — 10,962 373 Home equity 1,346 1,383 — 1,017 21 Other consumer — — — — — Total consumer 15,450 15,845 — 11,979 394 Total loans with no related allowance $ 33,941 $ 52,987 $ — $ 36,462 $ 616 Total Commercial and industrial $ 62,035 $ 96,784 $ 12,010 $ 65,792 $ 1,895 Commercial real estate — owner occupied 1,676 1,682 19 1,774 88 Commercial and business lending 63,711 98,466 12,029 67,566 1,982 Commercial real estate — investor 4,633 5,808 15 4,931 174 Real estate construction 477 559 67 494 30 Commercial real estate lending 5,110 6,367 82 5,425 204 Total commercial 68,820 104,833 12,111 72,991 2,186 Residential mortgage 35,554 37,087 2,740 34,683 1,229 Home equity 4,422 4,851 1,190 4,773 211 Other consumer 1,247 1,249 125 1,250 1 Total consumer 41,223 43,187 4,055 40,706 1,441 Total loans (a) $ 110,043 $ 148,020 $ 16,165 $ 113,697 $ 3,628 (a) The net recorded investment (defined as recorded investment, net of the related allowance) of the impaired loans represented 63% of the unpaid principal balance at December 31, 2019. Troubled Debt Restructurings Loans are considered restructured loans if concessions have been granted to borrowers that are experiencing financial difficulty. The following table presents nonaccrual and performing restructured loans by loan portfolio: June 30, 2020 December 31, 2019 ($ in Thousands) Performing Nonaccrual Restructured Loans (a) Performing Nonaccrual Restructured Loans (a) PPP $ — $ — $ — $ — Commercial and industrial 16,321 7,968 16,678 7,376 Commercial real estate — owner occupied 1,441 — 1,676 — Commercial real estate — investor 114 395 293 — Real estate construction 313 173 298 179 Residential mortgage 4,178 15,401 3,955 13,035 Home equity 1,717 1,424 1,896 1,904 Other consumer 1,219 — 1,246 1 Total restructured loans (b) $ 25,303 $ 25,362 $ 26,041 $ 22,494 (a) Nonaccrual restructured loans have been included within nonaccrual loans. (b) Does not include any restructured loans related to COVID-19 in accordance with Section 4013 of the CARES Act. The Corporation had a recorded investment of $8 million in loans modified in a TDR during the six months ended June 30, 2020, of which $1 million were in accrual status and $7 million were in nonaccrual pending a sustained period of repayment. Short-term loan modifications made in good faith to help ease the adverse effects of COVID-19 are not categorized as TDRs in accordance with regulatory guidance. The following table provides the number of loans modified in a TDR by loan portfolio, the recorded investment and unpaid principal balance for the six months ended June 30, 2020 and 2019: Six Months Ended June 30, 2020 Six Months Ended June 30, 2019 ($ in Thousands) Number Recorded Investment (a) Unpaid Principal Balance (b) Number Recorded Investment (a) Unpaid Principal Balance (b) PPP — $ — $ — — $ — $ — Commercial and industrial 2 1,112 1,140 1 196 196 Commercial real estate — owner occupied 1 288 319 — — — Commercial real estate — investor 1 395 1,705 — — — Real estate construction 1 102 102 — — — Residential mortgage 24 5,163 5,237 38 5,665 5,682 Home equity 15 471 483 18 499 506 Other consumer — — — 1 10 10 Total loans modified 44 $ 7,531 $ 8,986 58 $ 6,370 $ 6,394 (a) Represents post-modification outstanding recorded investment. (b) Represents pre-modification outstanding recorded investment. Restructured loan modifications may include payment schedule modifications, interest rate concessions, maturity date extensions, modification of note structure (A/B Note), non-reaffirmed Chapter 7 bankruptcies, principal reduction, or some combination of these concessions. During the six months ended June 30, 2020, restructured loan modifications of commercial loans primarily included maturity date extensions and payment schedule modifications. Restructured loan modifications of consumer loans primarily included maturity date extensions, interest rate concessions, non-reaffirmed Chapter 7 bankruptcies, or a combination of these concessions for the six months ended June 30, 2020. The following table provides the number of loans modified in a TDR during the previous twelve months which subsequently defaulted during the six months ended June 30, 2020 and 2019 and the recorded investment in these restructured loans as of June 30, 2020 and 2019: Six Months Ended June 30, 2020 Six Months Ended June 30, 2019 ($ in Thousands) Number of Recorded Number of Recorded Residential mortgage 5 $ 1,036 16 $ 2,813 Home equity 4 208 14 477 Total loans modified 9 $ 1,244 30 $ 3,290 All loans modified in a TDR are evaluated for impairment. The nature and extent of the impairment of restructured loans, including those which have experienced a subsequent payment default, are considered in the determination of an appropriate level of the ACLL. The Corporation analyzes loans for classification as a probable TDR. This analysis includes identifying customers that are showing possible liquidity issues in the near term without reasonable access to alternative sources of capital. At adoption of ASU 2016-13 on January 1, 2020, the Corporation had $114 million in loans meeting this classification compared to $102 million at June 30, 2020. Of the loans classified as probable TDRs at June 30, 2020, $76 million are within the oil and gas portfolio, while one loan with a balance of $26 million, is in general commercial and business lending. Allowance for Credit Losses on Loans The ACLL is comprised of the allowance for loan losses and the allowance for unfunded commitments. The level of the ACLL represents management’s estimate of an amount appropriate to provide for expected lifetime credit losses in the loan portfolio at the balance sheet date. A main factor in the determination of the ACLL is the economic forecast. The Corporation utilized the Moody's baseline forecast, updated during June 2020, in the allowance model. The forecast is applied over a 1 year reasonable and supportable period with immediate reversion to historical long run losses. The Corporation changed the reversion methodology during the first quarter of 2020 from straight-line over 1 year to immediate reversion due to the uncertainty within the economic forecasts due to COVID-19. The allowance for unfunded commitments is maintained at a level believed by management to be sufficient to absorb expected lifetime losses related to unfunded credit facilities (including unfunded loan commitments and letters of credit). See Note 12 for additional information on the change in the allowance for unfunded commitments. The following table presents a summary of the changes in the ACLL by portfolio segment for the six months ended June 30, 2020: ($ in Thousands) Dec. 31, 2019 Cumulative effect of ASU 2016-13 adoption (CECL) Jan. 1, 2020 Charge offs Recoveries Net Charge offs Gross up of allowance for PCD loans at acquisition Provision recorded at acquisition Provision for loan losses June 30, 2020 ACLL / Loans Allowance for loan losses PPP $ — $ — $ — $ — $ — $ — $ — $ — $ 808 $ 808 Commercial and industrial 91,133 52,919 144,052 (42,183) 2,215 (39,968) 293 408 70,767 175,553 Commercial real estate — owner occupied 10,284 (1,851) 8,433 — 1 1 890 255 736 10,315 Commercial and business lending 101,417 51,068 152,485 (42,183) 2,216 (39,967) 1,183 663 72,311 186,676 Commercial real estate — investor 40,514 2,041 42,555 (140) 168 28 753 472 14,713 58,520 Real estate construction 24,915 7,467 32,382 (19) 27 8 435 492 5,076 38,393 Commercial real estate lending 65,428 9,508 74,937 (159) 195 36 1,188 964 19,789 96,913 Total commercial 166,846 60,576 227,422 (42,342) 2,412 (39,931) 2,371 1,627 92,101 283,590 Residential mortgage 16,960 33,215 50,175 (1,301) 174 (1,127) 651 403 (6,276) 43,825 Home equity 10,926 11,649 22,575 (1,213) 981 (232) 422 374 (1,677) 21,462 Other consumer 6,639 7,016 13,655 (2,802) 562 (2,240) 61 140 3,309 14,926 Total consumer 34,525 51,880 86,405 (5,316) 1,717 (3,599) 1,134 917 (4,644) 80,213 Total loans $ 201,371 $ 112,457 $ 313,828 $ (47,659) $ 4,129 $ (43,530) $ 3,504 $ 2,543 $ 87,457 $ 363,803 Allowance for unfunded commitments PPP $ — $ — $ — $ — $ — $ — $ — $ — $ — $ — Commercial and industrial 12,276 (3,998) 8,278 — — — — 61 11,261 19,601 Commercial real estate — owner occupied 127 — 127 — — — — 4 93 224 Commercial and business lending 12,403 (3,998) 8,405 — — — — 65 11,354 19,824 Commercial real estate — investor 530 246 776 — — — — 2 (227) 550 Real estate construction 7,532 18,347 25,879 — — — — 45 11,956 37,880 Commercial real estate lending 8,062 18,593 26,655 — — — — 47 11,729 38,430 Total commercial 20,465 14,595 35,060 — — — — 112 23,084 58,256 Home equity 1,038 2,591 3,629 — — — — 66 152 3,846 Other consumer 405 1,504 1,909 — — — — — 766 2,675 Total consumer 1,443 4,095 5,538 — — — — 66 917 6,522 Total loans $ 21,907 $ 18,690 $ 40,597 $ — $ — $ — $ — $ 179 $ 24,000 $ 64,776 Allowance for credit losses on loans PPP $ — $ — $ — $ — $ — $ — $ — $ — $ 808 $ 808 0.08 % Commercial and industrial 103,409 48,921 152,330 (42,183) 2,215 (39,968) 293 469 82,028 195,155 2.45 % Commercial real estate — owner occupied 10,411 (1,851) 8,560 — 1 1 890 259 829 10,538 1.15 % Commercial and business lending 113,820 47,070 160,890 (42,183) 2,216 (39,967) 1,183 728 83,666 206,501 2.09 % Commercial real estate — investor 41,044 2,287 43,331 (140) 168 28 753 474 14,486 59,070 1.42 % Real estate construction 32,447 25,814 58,261 (19) 27 8 435 537 17,032 76,273 4.47 % Commercial real estate lending 73,490 28,101 101,591 (159) 195 36 1,188 1,011 31,518 135,343 2.30 % Total commercial 187,311 75,171 262,482 (42,342) 2,412 (39,931) 2,371 1,739 115,184 341,844 2.17 % Residential mortgage 16,960 33,215 50,175 (1,301) 174 (1,127) 651 403 (6,277) 43,826 0.55 % Home equity 11,964 14,240 26,204 (1,213) 981 (232) 422 440 (1,526) 25,308 3.18 % Other consumer 7,044 8,520 15,564 (2,802) 562 (2,240) 61 140 4,076 17,601 5.40 % Total consumer 35,968 55,975 91,943 (5,316) 1,717 (3,599) 1,134 983 (3,727) 86,735 0.96 % Total loans $ 223,278 $ 131,147 $ 354,425 $ (47,659) $ 4,129 $ (43,530) $ 3,504 $ 2,722 $ 111,457 $ 428,579 1.73 % The following table presents details of the allowance for loan losses segregated by loan portfolio segment as of December 31, 2019, calculated in accordance with prior incurred loss methodology applicable under ASC Topic 310: ($ in Thousands) December 31, 2018 Charge offs Recoveries Net Charge offs Provision for loan losses December 31, 2019 Allowance for loan losses Commercial and industrial $ 108,835 $ (63,315) $ 11,875 $ (51,441) $ 33,738 $ 91,133 Commercial real estate — owner occupied 9,255 (222) 2,795 2,573 (1,543) 10,284 Commercial and business lending 118,090 (63,537) 14,670 (48,868) 32,195 101,417 Commercial real estate — investor 40,844 — 31 31 (361) 40,514 Real estate construction 28,240 (60) 302 243 (3,568) 24,915 Commercial real estate lending 69,084 (60) 333 274 (3,929) 65,429 Total commercial 187,174 (63,597) 15,003 (48,594) 28,266 166,846 Residential mortgage 25,595 (3,322) 692 (2,630) (6,005) 16,960 Home equity 19,266 (1,846) 2,599 753 (9,093) 10,926 Other consumer 5,988 (5,548) 868 (4,681) 5,332 6,639 Total consumer 50,849 (10,716) 4,159 (6,558) (9,766) 34,525 Total loans $ 238,023 $ (74,313) $ 19,161 $ (55,152) $ 18,500 $ 201,371 A summary of the individually and collectively evaluated loans by portfolio segment at December 31, 2019, was as follows: Allowance for loan losses Loans ($ in Thousands) Individually evaluated for impairment Collectively evaluated for impairment Total allowance for loan losses Individually evaluated for impairment Collectively evaluated for impairment Acquired and accounted for under ASC 310-30 (a) Total loans Commercial and industrial $ 12,010 $ 79,123 $ 91,133 $ 62,035 $ 7,292,217 $ 342 $ 7,354,594 Commercial real estate — owner occupied 19 10,265 10,284 1,676 909,010 579 911,265 Commercial and business lending 12,029 89,388 101,417 63,711 8,201,227 921 8,265,858 Commercial real estate — investor 15 40,498 40,514 4,633 3,789,755 129 3,794,517 Real estate construction 67 24,848 24,915 477 1,420,416 7 1,420,900 Commercial real estate lending 82 65,346 65,429 5,110 5,210,171 136 5,215,417 Total commercial 12,111 154,734 166,846 68,821 13,411,398 1,057 13,481,275 Residential mortgage 2,740 14,220 16,960 35,554 8,100,958 469 8,136,980 Home equity 1,190 9,737 10,926 4,422 847,577 26 852,025 Other consumer 125 6,514 6,639 1,247 349,912 — 351,159 Total consumer 4,055 30,471 34,525 41,223 9,298,447 495 9,340,164 Total loans $ 16,165 $ 185,205 $ 201,371 $ 110,043 $ 22,709,845 $ 1,552 $ 22,821,440 (a) Loans acquired in business combinations and accounted for under ASC Subtopic 310-30 "Receivables — Loans and Debt Securities Acquired with Deteriorated Credit Quality." Loans Acquired in Acquisitions Loans acquired in a business combination after January 1, 2020 are recorded in accordance with ASC Topic 326. See Note 2 Acquisitions and Dispositions for more information on loans acquired in a business combination. After January 1, 2020, acquired loans were segregated into two types: • PCD loans are loans demonstrating more than insignificant credit deterioration since origination and are accounted for with ASC 326-30. Under this guidance, the credit mark on acquired assets grosses up the allowance for loan losses and the amortized cost of the loan. • Non-PCD loans are accounted for in accordance with ASC Topic 310-20 "Nonrefundable Fees and Other Costs" as these loans do not show evidence of credit deterioration since origination. Loans acquired in a business combination prior to January 1, 2020 were recorded at estimated fair value on their purchase date without a carryover of the related allowance for loan losses. Prior to January 1, 2020, acquired loans were segregated into two types: • Performing loans were accounted for in accordance with ASC Topic 310-20 "Nonrefundable Fees and Other Costs" as these loans do not have evidence of credit deterioration since origination. • Nonperforming loans were accounted for in accordance with ASC Topic 310-30 as they displayed significant credit deterioration since origination.

Goodwill and Other Intangible A

Goodwill and Other Intangible Assets	6 Months Ended
	Jun. 30, 2020
Goodwill and Intangible Assets Disclosure [Abstract]
Goodwill and Other Intangible Assets	Goodwill and Other Intangible Assets Goodwill Goodwill is not amortized but is instead subject to impairment tests on at least an annual basis, and more frequently if an event occurs or circumstances change that would more likely than not reduce the fair value of a reporting unit below its carrying amount. The Corporation conducted its most recent annual impairment testing in May 2020, utilizing a quantitative assessment to compare the fair value of each reporting unit with its carrying amount, including goodwill. An impairment loss is recognized if the carrying amount of a reporting unit exceeds its fair value. Based on the quantitative assessment, management concluded that the estimated fair value exceeded the carrying value (including goodwill) for each reporting unit. Therefore, based on the step one quantitative analysis, no impairment was required. There have been no events since the May 2020 impairment testing that have changed the Corporation's impairment assessment conclusion. There were no impairment charges recorded in 2019 or the first six months of 2020. At June 30, 2020 and December 31, 2019, the Corporation had goodwill of $1.1 billion and $1.2 billion, respectively. There was an increase of $15 million during the first quarter of 2020 with a subsequent reduction of $2 million due to adjustments that were made to goodwill relating to the First Staunton acquisition, and an $82 million reduction related to the disposition of ABRC. Other Intangible Assets The Corporation has other intangible assets that are amortized, consisting of CDIs, other intangibles, and MSRs. Other intangibles decreased $19 million from December 31, 2019, primarily driven by a $17 million decrease due to the disposition of ABRC. For CDIs and other intangibles, changes in the gross carrying amount, accumulated amortization, and net book value were as follows: ($ in Thousands) Six Months Ended June 30, 2020 Year Ended December 31, 2019 Core deposit intangibles Gross carrying amount at the beginning of the year $ 80,730 $ 58,100 Additions during the period 7,379 22,630 Accumulated amortization (16,800) (12,456) Net book value $ 71,309 $ 68,274 Amortization during the year $ 4,344 $ 7,130 Other intangibles Gross carrying amount at the beginning of the year $ 38,970 $ 44,887 Additions during the period 200 — Reductions due to sale (17,435) (217) Accumulated amortization (20,285) (24,643) Net book value $ 1,450 $ 20,027 Amortization during the year $ 1,343 $ 2,818 Mortgage Servicing Rights The Corporation sells residential mortgage loans in the secondary market and typically retains the right to service the loans sold. MSRs are amortized in proportion to and over the period of estimated net servicing income and assessed for impairment at each reporting date. The Corporation evaluates its MSRs asset for impairment at minimum on a quarterly basis. Impairment is assessed based on fair value at each reporting date using estimated prepayment speeds of the underlying mortgage loans serviced and stratifications based on the risk characteristics of the underlying loans (predominantly loan type and note interest rate). As mortgage interest rates fall, prepayment speeds are usually faster and the value of the MSRs asset generally decreases, requiring additional valuation reserve. Conversely, as mortgage interest rates rise, prepayment speeds are usually slower and the value of the MSRs asset generally increases, requiring less valuation reserve. A valuation allowance is established, through a charge to earnings, to the extent the amortized cost of the MSRs exceeds the estimated fair value by stratification. During the first half of 2020, the Corporation recognized temporary impairment of $17 million driven by decreasing interest rates. If it is later determined that all or a portion of the temporary impairment no longer exists for a stratification, the valuation is reduced through a recovery to earnings. An other-than-temporary impairment (i.e., recoverability is considered remote when considering interest rates and loan pay off activity) is recognized as a write-down of the MSRs asset and the related valuation allowance (to the extent a valuation allowance is available) and then against earnings. A direct write-down permanently reduces the carrying value of the MSRs asset and valuation allowance, precluding subsequent recoveries. See Note 12 for a discussion of the recourse provisions on sold residential mortgage loans. See Note 13 which further discusses fair value measurement relative to the MSRs asset. A summary of changes in the balance of the MSRs asset and the MSRs valuation allowance is as follows: ($ in Thousands) Six Months Ended June 30, 2020 Year Ended December 31, 2019 Mortgage servicing rights Mortgage servicing rights at beginning of period $ 67,607 $ 68,433 Additions from acquisition 1,357 — Additions 7,812 11,606 Amortization (10,043) (12,432) Mortgage servicing rights at end of period $ 66,734 $ 67,607 Valuation allowance at beginning of period $ (302) $ (239) (Additions) recoveries, net (17,029) (63) Valuation allowance at end of period $ (17,331) $ (302) Mortgage servicing rights, net $ 49,403 $ 67,306 Fair value of mortgage servicing rights $ 49,423 $ 72,532 Portfolio of residential mortgage loans serviced for others (“servicing portfolio”) $ 8,454,204 $ 8,488,969 Mortgage servicing rights, net to servicing portfolio 0.58 % 0.79 % Mortgage servicing rights expense (a) $ 27,072 $ 12,494 (a) Includes the amortization of mortgage servicing rights and additions / recoveries to the valuation allowance of mortgage servicing rights, and is a component of mortgage banking, net on the consolidated statements of income. The projections of amortization expense are based on existing asset balances, the current interest rate environment, and prepayment speeds as of June 30, 2020. The actual amortization expense the Corporation recognizes in any given period may be significantly different depending upon acquisition or sale activities, changes in interest rates, prepayment speeds, market conditions, regulatory requirements, and events or circumstances that indicate the carrying amount of an asset may not be recoverable. The following table shows the estimated future amortization expense for amortizing intangible assets: ($ in Thousands) Core Deposit Intangibles Other Intangibles Mortgage Servicing Rights Six Months Ending December 31, 2020 $ 4,405 $ 100 $ 7,676 2021 8,811 200 14,970 2022 8,811 200 10,982 2023 8,811 200 8,269 2024 8,811 200 6,409 2025 8,811 200 5,082 Beyond 2025 22,849 350 13,346 Total Estimated Amortization Expense $ 71,309 $ 1,450 $ 66,734

Short and Long-Term Funding

Short and Long-Term Funding	6 Months Ended
	Jun. 30, 2020
Debt Disclosure [Abstract]
Short and Long-Term Funding	Short and Long-Term Funding The following table presents the components of short-term funding (funding with original contractual maturities of one year or less), long-term funding (funding with original contractual maturities greater than one year), and FHLB advances (funding based on original contractual maturities): ($ in Thousands) June 30, 2020 December 31, 2019 Short-Term Funding Federal funds purchased $ 3,430 $ 362,000 Securities sold under agreements to repurchase 138,863 71,097 Federal funds purchased and securities sold under agreements to repurchase 142,293 433,097 Commercial paper 39,535 32,016 Total short-term funding $ 181,828 $ 465,113 Long-Term Funding Bank senior notes, at par, due 2021 $ 300,000 $ 300,000 Corporation subordinated notes, at par, due 2025 250,000 250,000 PPPLF 1,009,760 — Finance leases 1,202 2,209 Capitalized costs (2,265) (2,866) Total long-term funding 1,558,698 549,343 Total short and long-term funding, excluding FHLB advances $ 1,740,525 $ 1,014,456 FHLB Advances Short-term FHLB advances $ — $ 520,000 Long-term FHLB advances 2,657,016 2,660,967 Total FHLB advances $ 2,657,016 $ 3,180,967 Total short and long-term funding $ 4,397,542 $ 4,195,422 Securities Sold Under Agreements to Repurchase ("Repurchase Agreements") The Corporation enters into agreements under which it sells securities subject to an obligation to repurchase the same or similar securities. Under these arrangements, the Corporation may transfer legal control over the assets but still retain effective control through an agreement that both entitles and obligates the Corporation to repurchase the assets. The obligation to repurchase the securities is reflected as a liability on the Corporation’s consolidated balance sheets, while the securities underlying the repurchase agreements remain in the respective investment securities asset accounts (i.e., there is no offsetting or netting of the investment securities assets with the repurchase agreement liabilities). See Note 11 for additional disclosures on balance sheet offsetting. The Corporation utilizes securities sold under agreements to repurchase to facilitate the needs of its customers. As of June 30, 2020, the Corporation pledged agency mortgage-related securities with a fair value of $203 million as collateral for the repurchase agreements. Securities pledged as collateral under repurchase agreements are maintained with the Corporation's safekeeping agents and are monitored on a daily basis due to the market risk of fair value changes in the underlying securities. The Corporation generally pledges excess securities to ensure there is sufficient collateral to satisfy short-term fluctuations in both the repurchase agreement balances and the fair value of the underlying securities. The remaining contractual maturity of the securities sold under agreements to repurchase on the consolidated balance sheets as of June 30, 2020 and December 31, 2019 are presented in the following table: Remaining Contractual Maturity of the Agreements ($ in Thousands) Overnight and Continuous Up to 30 days 30-90 days Greater than 90 days Total June 30, 2020 Repurchase agreements Agency mortgage-related securities $ 138,863 $ — $ — $ — $ 138,863 Total $ 138,863 $ — $ — $ — $ 138,863 December 31, 2019 Repurchase agreements Agency mortgage-related securities $ 71,097 $ — $ — $ — $ 71,097 Total $ 71,097 $ — $ — $ — $ 71,097 Long-Term Funding Senior Notes In August 2018, the Bank issued $300 million of senior notes, due August 2021, and callable July 2021. The senior notes have a fixed coupon interest rate of 3.50% and were issued at a discount. Subordinated Notes In November 2014, the Corporation issued $250 million of 10-year subordinated notes, due January 2025, and callable October 2024. The subordinated notes have a fixed coupon interest rate of 4.25% and were issued at a discount. Paycheck Protection Program Liquidity Facility In connection with the funding of PPP loans, the Corporation has utilized the PPPLF. These borrowings from the Federal Reserve Bank match the term of the underlying loan, which has been pledged to secure the borrowings, with original terms of two or five years. The rate of this funding is 0.35%. The Corporation expects the PPP loans to pay down mostly in the fourth quarter of 2020 and early 2021 with the funding paying down during that same timeframe, therefore the expected maturity is less than the contractual terms of two or five years. Finance Leases In connection with the construction of new branches in Oshkosh and Eau Claire, Wisconsin, the Corporation entered into land leases with options to purchase the underlying land for a fixed price, which the Corporation now expects to exercise. The finance leases have fixed interest rates of approximately 1.00%. See Note 18 for additional disclosure regarding the Corporation’s leases.

Derivative and Hedging Activiti

Derivative and Hedging Activities	6 Months Ended
	Jun. 30, 2020
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Derivative and Hedging Activities	Derivative and Hedging Activities The Corporation is exposed to certain risk arising from both its business operations and economic conditions. The Corporation principally manages its exposures to a wide variety of business and operational risks through management of its core business activities. The Corporation manages economic risks, including interest rate, liquidity, and credit risk primarily by managing the amount, sources, and duration of its assets and liabilities and the use of derivative financial instruments. Specifically, the Corporation enters into derivative financial instruments to manage exposures that arise from business activities that result in the receipt or payment of future known and uncertain cash amounts, the value of which are determined by interest rates. The Corporation's derivative financial instruments are used to manage differences in the amount, timing, and duration of the Corporation's known or expected cash receipts and its known or expected cash payments principally related to the Corporation's assets. The contract or notional amount of a derivative is used to determine, along with the other terms of the derivative, the amounts to be exchanged between the counterparties. The Corporation is exposed to credit risk in the event of nonperformance by counterparties to financial instruments. To mitigate the counterparty risk, contracts generally contain language outlining collateral pledging requirements for each counterparty. For non-centrally cleared derivatives, collateral must be posted when the market value exceeds certain mutually agreed upon threshold limits. Securities and cash are often pledged as collateral. The Corporation pledged $73 million of investment securities as collateral at June 30, 2020, and pledged $57 million of investment securities as collateral at December 31, 2019. At June 30, 2020, the Corporation posted $38 million of cash collateral compared to $14 million at December 31, 2019. Federal regulations require the Corporation to clear all LIBOR interest rate swaps through a clearing house, if possible. For derivatives cleared through central clearing houses, the variation margin payments are legally characterized as daily settlements of the derivative rather than collateral. The Corporation's clearing agent for interest rate derivative contracts that are centrally cleared through the Chicago Mercantile Exchange (CME) and the London Clearing House (LCH) settles the variation margin daily. As a result, the variation margin payment and the related derivative instruments are considered a single unit of account for accounting and financial reporting purposes. Depending on the net position, the fair value is reported in other assets or accrued expenses and other liabilities on the consolidated balance sheets. The daily settlement of the derivative exposure does not change or reset the contractual terms of the instrument. Fair Value Hedges of Interest Rate Risk The Corporation is exposed to changes in the fair value of certain of its pools of prepayable fixed-rate assets due to changes in benchmark interest rates. The Corporation used interest rate swaps to manage its exposure to changes in fair value on these instruments attributable to changes in the designated benchmark interest rate. Interest rate swaps designated as fair value hedges involved the payment of fixed-rate amounts to a counterparty in exchange for the Corporation receiving variable-rate payments over the life of the agreements without the exchange of the underlying notional amount. For derivatives designated and that qualify as fair value hedges, the gain or loss on the derivative as well as the offsetting loss or gain on the hedged item attributable to the hedged risk were recognized in interest income. During the fourth quarter of 2019, the Corporation terminated the outstanding fair value hedges. Derivatives to Accommodate Customer Needs The Corporation also facilitates customer borrowing activity by entering into various derivative contracts which are designated as free standing derivative contracts. Free standing derivative products are entered into primarily for the benefit of commercial customers seeking to manage their exposures to interest rate risk, foreign currency, and commodity prices. These derivative contracts are not designated against specific assets and liabilities on the consolidated balance sheets or forecasted transactions and, therefore, do not qualify for hedge accounting treatment. Such derivative contracts are carried at fair value in other assets and accrued expenses and other liabilities on the consolidated balance sheets with changes in the fair value recorded as a component of capital markets, net, and typically include interest rate-related instruments (swaps and caps), foreign currency exchange forwards, and commodity contracts. See Note 11 for additional information and disclosures on balance sheet offsetting. Interest rate-related instruments: The Corporation provides interest rate risk management services to commercial customers, primarily forward interest rate swaps and caps. The Corporation’s market risk from unfavorable movements in interest rates related to these derivative contracts is generally economically hedged by concurrently entering into offsetting derivative contracts. The offsetting derivative contracts have identical notional values, terms, and indices. Foreign currency exchange forwards: The Corporation provides foreign currency exchange services to customers, primarily forward contracts. The Corporation's customers enter into a foreign currency exchange forward with the Corporation as a means for them to mitigate exchange rate risk. The Corporation mitigates its risk by then entering into an offsetting foreign currency exchange derivative contract. Commodity contracts: Commodity contracts are entered into primarily for the benefit of commercial customers seeking to manage their exposure to fluctuating commodity prices. The Corporation mitigates its risk by then entering into an offsetting commodity derivative contract. Mortgage Derivatives Interest rate lock commitments to originate residential mortgage loans held for sale and forward commitments to sell residential mortgage loans are considered derivative instruments, and the fair value of these commitments is recorded in other assets and accrued expenses and other liabilities on the consolidated balance sheets with the changes in fair value recorded as a component of mortgage banking, net. The following table presents the total notional amounts and gross fair values of the Company’s derivatives, as well as the balance sheet netting adjustments as of June 30, 2020 and December 31, 2019. The derivative assets and liabilities are presented on a gross basis prior to the application of bilateral collateral and master netting agreements, but after the variation margin payments with central clearing organizations have been applied as settlement, as applicable. Total derivative assets and liabilities are adjusted to take into consideration the effects of legally enforceable master netting agreements and cash collateral received or paid as of June 30, 2020 and December 31, 2019. The resulting net derivative asset and liability fair values are included in other assets and accrued expenses and other liabilities, respectively, on the consolidated balance sheets. June 30, 2020 December 31, 2019 Asset Liability Asset Liability ($ in Thousands) Notional Amount Fair Value Notional Amount Fair Value Notional Amount Fair Value Notional Amount Fair Value Not designated as hedging instruments Interest rate-related instruments $ 3,564,015 $ 238,003 $ 3,564,015 $ 31,472 $ 3,029,877 $ 77,024 $ 3,029,877 $ 13,073 Foreign currency exchange forwards 337,015 4,200 290,557 4,102 272,636 4,226 264,653 4,048 Commodity contracts 163,307 38,543 158,756 36,998 255,089 20,528 255,165 19,624 Mortgage banking (a) 299,330 12,837 393,184 1,293 255,291 2,527 263,000 710 Gross derivatives before netting $ 293,583 $ 73,865 $ 104,305 $ 37,455 Less: Legally enforceable master netting agreements 1,586 1,586 10,410 10,410 Less: Cash collateral pledged/received 36,234 32,285 1,408 11,365 Total derivative instruments, after netting $ 255,763 $ 39,994 $ 92,487 $ 15,680 (a) Mortgage derivative assets include interest rate lock commitments and mortgage derivative liabilities include forward commitments. The Corporation terminated its $500 million fair value hedge during the fourth quarter of 2019. At June 30, 2020, the amortized cost basis of the closed portfolios which had previously been used in the terminated hedging relationship was $751 million and is included in loans and investment securities, available for sale, at fair value on the consolidated balance sheets. This amount includes $4 million of hedging adjustments on the discontinued hedging relationships. The table below identifies the effect of fair value hedge accounting on the Corporation's consolidated statements of income for the three and six months ended June 30, 2020 and 2019: Location and Amount of Gain or (Loss) Recognized in Income on Three Months Ended June 30, Six Months Ended June 30, 2020 2019 2020 2019 ($ in Thousands) Interest Income Other Income (Expense) Interest Income Other Income (Expense) Interest Income Other Income (Expense) Interest Income Other Income (Expense) Total amounts of income and expense line items presented on the consolidated statements of income in which the effects of the fair value hedge is recorded $ (542) $ — $ 53 $ — $ (864) $ (262) $ 219 $ — The effects of fair value hedging: Gain or (loss) on fair value hedging relationships in Subtopic 815-20 Interest contracts Hedged items (542) — 4,165 — (864) (262) 6,222 — Derivatives designated as hedging instruments (a) — — (4,112) — — — (6,003) — (a) Includes net settlements on the derivatives. The table below identifies the effect of derivatives not designated as hedging instruments on the Corporation's consolidated statements of income for the three and six months ended June 30, 2020 and 2019: Consolidated Statements of Income Category of Three Months Ended June 30, Six Months Ended June 30, ($ in Thousands) 2020 2019 2020 2019 Derivative Instruments Interest rate-related instruments — customer and mirror, net Capital markets, net $ (65) $ (1,018) $ (3,155) $ (1,690) Foreign currency exchange forwards Capital markets, net 41 186 (81) 212 Commodity contracts Capital markets, net (105) (1,678) 641 (2,245) Interest rate lock commitments (mortgage) Mortgage banking, net 382 1,837 10,310 2,661 Forward commitments (mortgage) Mortgage banking, net 9,679 (78) (582) 169

Balance Sheet Offsetting

Balance Sheet Offsetting	6 Months Ended
	Jun. 30, 2020
Offsetting [Abstract]
Balance Sheet Offsetting	Balance Sheet Offsetting Interest Rate-Related Instruments, Commodity Contracts, and Foreign Exchange Forwards (“Interest, Commodity, and Foreign Exchange Agreements”) The Corporation enters into interest rate-related instruments to facilitate the interest rate risk management strategies of commercial customers, commodity contracts to manage commercial customers' exposure to fluctuating commodity prices, and foreign exchange forwards to manage customers' exposure to fluctuating foreign exchange rates. The Corporation mitigates these risks by entering into equal and offsetting agreements with highly rated third-party financial institutions. The Corporation is party to master netting arrangements with its financial institution counterparties that create single net settlements of all legal claims or obligations to pay or receive the net amount of settlement of the individual interest, commodity, and foreign exchange agreements. Collateral, usually in the form of investment securities and cash, is posted by the counterparty with net liability positions in accordance with contract thresholds. Derivatives subject to a legally enforceable master netting agreement are reported on a net basis, net of cash collateral, in other assets and accrued expenses and other liabilities, on the face of the consolidated balance sheets. See Note 10 for additional information on the Corporation’s derivative and hedging activities. Securities Sold Under Agreements to Repurchase (“Repurchase Agreements”) The Corporation enters into agreements under which it sells securities subject to an obligation to repurchase the same or similar securities. These repurchase agreements are accounted for as collateralized financing arrangements (i.e., secured borrowings) and not as a sale and subsequent repurchase of securities (i.e., there is no offsetting or netting of the investment securities assets with the repurchase agreement liabilities). The right of set-off for a repurchase agreement resembles a secured borrowing, whereby the collateral would be used to settle the fair value of the repurchase agreement should the Corporation be in default (e.g., fails to make an interest payment to the counterparty). In addition, the Corporation does not enter into reverse repurchase agreements; therefore, there is no such offsetting to be done with the repurchase agreements. See Note 9 for additional disclosures on repurchase agreements. The following table presents the interest rate, commodity, and foreign exchange assets and liabilities subject to an enforceable master netting arrangement. The interest, commodity and foreign exchange agreements the Corporation has with its commercial customers are not subject to an enforceable master netting arrangement and are therefore excluded from this table: Gross Amounts Recognized Gross Amounts Subject to Master Netting Arrangements Offset on the Consolidated Balance Sheets Net Amounts Presented on the Consolidated Balance Sheets Investment Securities Received ($ in Thousands) Derivative Cash Collateral Received Net amount Derivative assets June 30, 2020 $ 38,569 $ (1,586) $ (36,234) $ 749 $ — $ 749 December 31, 2019 11,864 (10,410) (1,408) 45 — 45 Gross Amounts Recognized Gross Amounts Subject to Master Netting Arrangements Offset on the Consolidated Balance Sheets Net Amounts Presented on the Consolidated Balance Sheets Investment Securities Pledged ($ in Thousands) Derivative Liabilities Offset Cash Collateral Pledged Net amount Derivative liabilities June 30, 2020 $ 34,434 $ (1,586) $ (32,285) $ 564 $ — $ 564 December 31, 2019 22,189 (10,410) (11,365) 413 — 413

Commitments, Off-Balance Sheet

Commitments, Off-Balance Sheet Arrangements, Legal Proceedings and Regulatory Matters	6 Months Ended
	Jun. 30, 2020
Commitments and Contingencies Disclosure [Abstract]
Commitments, Off-Balance Sheet Arrangements, Legal Proceedings and Regulatory Matters	Commitments, Off-Balance Sheet Arrangements, Legal Proceedings and Regulatory Matters The Corporation utilizes a variety of financial instruments in the normal course of business to meet the financial needs of its customers and to manage its own exposure to fluctuations in interest rates. These financial instruments include lending-related and other commitments (see below) as well as derivative instruments (see Note 10). The following is a summary of lending-related commitments: ($ in Thousands) June 30, 2020 December 31, 2019 Commitments to extend credit, excluding commitments to originate residential mortgage loans held for sale (a)(b) $ 9,580,338 $ 9,024,412 Commercial letters of credit (a) 6,123 7,081 Standby letters of credit (c) 265,223 277,969 (a) These off-balance sheet financial instruments are exercisable at the market rate prevailing at the date the underlying transaction will be completed and, thus, are deemed to have no current fair value, or the fair value is based on fees currently charged to enter into similar agreements and was not material at June 30, 2020 or December 31, 2019. (b) Interest rate lock commitments to originate residential mortgage loans held for sale are considered derivative instruments and are disclosed in Note 10. (c) The Corporation has established a liability of $3 million for both June 30, 2020 and December 31, 2019, as an estimate of the fair value of these financial instruments. Lending-related Commitments As a financial services provider, the Corporation routinely enters into commitments to extend credit. Such commitments are subject to the same credit policies and approval process accorded to loans made by the Corporation, with each customer’s creditworthiness evaluated on a case-by-case basis. The commitments generally have fixed expiration dates or other termination clauses and may require the payment of a fee. The Corporation’s exposure to credit loss in the event of nonperformance by the other party to these financial instruments is represented by the contractual amount of those instruments. The amount of collateral obtained, if deemed necessary by the Corporation upon extension of credit, is based on management’s credit evaluation of the customer. Since a significant portion of commitments to extend credit are subject to specific restrictive loan covenants or may expire without being drawn upon, the total commitment amounts do not necessarily represent future cash flow requirements. An allowance for unfunded commitments is maintained at a level believed by management to be sufficient to absorb expected lifetime losses related to unfunded commitments (including unfunded loan commitments and letters of credit). The following table presents a summary of the changes in the allowance for unfunded commitments: ($ in Thousands) Six Months Ended June 30, 2020 Year Ended December 31, 2019 Allowance for Unfunded Commitments Balance at beginning of period $ 21,907 $ 24,336 Cumulative effect of ASU 2016-13 adoption (CECL) 18,690 N/A Balance at beginning of period, adjusted 40,597 24,336 Provision for unfunded commitments 24,000 (2,500) Amount recorded at acquisition 179 70 Balance at end of period $ 64,776 $ 21,907 The increase is a result of the Day 1 modified retrospective adjustment of $19 million for the adoption of ASU 2016-13. In addition, there was a $24 million increase to the provision for unfunded commitments driven by the expected impact of the COVID-19 pandemic within the economic models used in the new expected credit loss methodology. See Note 3 and Note 7 of the notes to consolidated financial statements for additional information on the adoption of ASU 2016-13 and the allowance for unfunded commitments. Lending-related commitments include commitments to extend credit, commitments to originate residential mortgage loans held for sale, commercial letters of credit, and standby letters of credit. Commitments to extend credit are legally binding agreements to lend to customers at predetermined interest rates, as long as there is no violation of any condition established in the contracts. Interest rate lock commitments to originate residential mortgage loans held for sale and forward commitments to sell residential mortgage loans are considered derivative instruments, and the fair value of these commitments are recorded on the consolidated balance sheets. The Corporation’s derivative and hedging activity is further described in Note 10. Commercial and standby letters of credit are conditional commitments issued to guarantee the performance of a customer to a third party. Commercial letters of credit are issued specifically to facilitate commerce and typically result in the commitment being drawn on when the underlying transaction is consummated between the customer and the third party, while standby letters of credit generally are contingent upon the failure of the customer to perform according to the terms of the underlying contract with the third party. Other Commitments The Corporation invests in qualified affordable housing projects, federal and state historic projects, new market projects, and opportunity zone funds for the purpose of community reinvestment and obtaining tax credits and other tax benefits. Return on the Corporation's investment in these projects and funds comes in the form of the tax credits and tax losses that pass through to the Corporation and deferral or elimination of capital gain recognition for tax purposes. The aggregate carrying value of these investments at June 30, 2020 was $274 million, compared to $248 million at December 31, 2019, included in tax credit and other investments on the consolidated balance sheets. The Corporation utilizes the proportional amortization method to account for investments in qualified affordable housing projects. Under the proportional amortization method, the Corporation amortizes the initial cost of the investment in proportion to the tax credits and other tax benefits. The Corporation recognized additional income tax expense attributable to the amortization of investments in qualified affordable housing projects of $12 million and $10 million for the six months ended June 30, 2020 and 2019, respectively, and $6 million and $5 million for the three months ended June 30, 2020 and 2019, respectively. The Corporation's remaining investment in qualified affordable housing projects accounted for under the proportional amortization method totaled $262 million at June 30, 2020 and $234 million at December 31, 2019. The Corporation’s unfunded equity contributions relating to investments in qualified affordable housing, federal and state historic projects, and new market projects are recorded in accrued expenses and other liabilities on the consolidated balance sheets. The Corporation’s remaining unfunded equity contributions totaled $136 million and $123 million at June 30, 2020 and December 31, 2019, respectively. For the six months ended June 30, 2020 and the year ended December 31, 2019, the Corporation did not record any impairment related to qualified affordable housing investments. The Corporation has principal investment commitments to provide capital-based financing to private and public companies through either direct investments in specific companies or through investment funds and partnerships. The timing of future cash requirements to fund such principal investment commitments is generally dependent on the investment cycle, whereby privately held companies are funded by private equity investors and ultimately sold, merged, or taken public through an initial offering, which can vary based on overall market conditions, as well as the nature and type of industry in which the companies operate. The Corporation also invests in loan pools that support CRA loans. The timing of future cash requirements to fund these pools is dependent upon loan demand, which can vary over time. The aggregate carrying value of these investments was $28 million and $26 million at June 30, 2020 and December 31, 2019, respectively, included in tax credit and other investments on the consolidated balance sheets. Legal Proceedings The Corporation is party to various pending and threatened claims and legal proceedings arising in the normal course of business activities, some of which involve claims for substantial amounts. Although there can be no assurance as to the ultimate outcomes, the Corporation believes it has meritorious defenses to the claims asserted against it in its currently outstanding matters and intends to continue to defend itself vigorously with respect to such legal proceedings. The Corporation will consider settlement of cases when, in management’s judgment, it is in the best interests of the Corporation and its shareholders. On at least a quarterly basis, the Corporation assesses its liabilities and contingencies in connection with all pending or threatened claims and litigation, utilizing the most recent information available. On a matter by matter basis, an accrual for loss is established for those matters which the Corporation believes it is probable that a loss may be incurred and that the amount of such loss can be reasonably estimated. Once established, each accrual is adjusted as appropriate to reflect any subsequent developments. Accordingly, management’s estimate will change from time to time, and actual losses may be more or less than the current estimate. For matters where a loss is not probable, or the amount of the loss cannot be estimated, no accrual is established. Resolution of legal claims is inherently unpredictable, and in many legal proceedings various factors exacerbate this inherent unpredictability, including where the damages sought are unsubstantiated or indeterminate, it is unclear whether a case brought as a class action will be allowed to proceed on that basis, discovery is not complete, the proceeding is not yet in its final stages, the matters present legal uncertainties, there are significant facts in dispute, there are a large number of parties (including where it is uncertain how liability, if any, will be shared among multiple defendants), or there is a wide range of potential results. The Corporation does not believe it is presently subject to any legal proceedings the resolution of which would have a material adverse effect on our business, financial condition, operating results or cash flows. Regulatory Matters A variety of consumer products, including mortgage and deposit products, and certain fees and charges related to such products, have come under increased regulatory scrutiny. It is possible that regulatory authorities could bring enforcement actions, including civil money penalties, or take other actions against the Corporation and the Bank in regard to these consumer products. The Bank could also determine of its own accord, or be required by regulators, to refund or otherwise make remediation payments to customers in connection with these products. It is not possible at this time for management to assess the probability of a material adverse outcome or reasonably estimate the amount of any potential loss related to such matters. Mortgage Repurchase Reserve The Corporation sells residential mortgage loans to investors in the normal course of business. Residential mortgage loans sold to others are predominantly conventional residential first lien mortgages originated under the Corporation's usual underwriting procedures, and are most often sold on a nonrecourse basis, primarily to the GSEs. The Corporation’s agreements to sell residential mortgage loans in the normal course of business usually require certain representations and warranties on the underlying loans sold, related to credit information, loan documentation, collateral, and insurability. Subsequent to being sold, if a material underwriting deficiency or documentation defect is discovered, the Corporation may be obligated to repurchase the loan or reimburse the GSEs for losses incurred (collectively, “make whole requests”). The make whole requests and any related risk of loss under the representations and warranties are largely driven by borrower performance. As a result of make whole requests, the Corporation has repurchased loans with principal balances of $3 million and $2 million for the six months ended June 30, 2020 and the year ended December 31, 2019, respectively. There were no loss reimbursement and settlement claims paid for the six months ended June 30, 2020 and such claims were negligible for the year ended December 31, 2019. Make whole requests during 2019 and the first six months of 2020 generally arose from loans sold during the period of January 1, 2012 to December 31, 2019. Since January 1, 2012, loans sold totaled $13.5 billion at the time of sale, and consisted primarily of loans sold to GSEs. As of June 30, 2020, approximately $7.4 billion of these sold loans remain outstanding. The balance in the mortgage repurchase reserve at the balance sheet date reflects the estimated amount of potential loss the Corporation could incur from repurchasing a loan, as well as loss reimbursements, indemnifications, and other settlement resolutions. The mortgage repurchase reserve, included in accrued expenses and other liabilities on the consolidated balance sheets, was $1 million as of June 30, 2020 and approximately $795,000 as of December 31, 2019. The Corporation may also sell residential mortgage loans with limited recourse (limited in that the recourse period ends prior to the loan’s maturity, usually after certain time and / or loan paydown criteria have been met), whereby repurchase could be required if the loan had defined delinquency issues during the limited recourse periods. At June 30, 2020 and December 31, 2019, there were approximately $34 million and $39 million, respectively, of residential mortgage loans sold with such recourse risk. There have been limited instances and immaterial historical losses on repurchases for recourse under the limited recourse criteria. The Corporation has a subordinate position to the FHLB in the credit risk on residential mortgage loans it sold to the FHLB in exchange for a monthly credit enhancement fee. The Corporation has not sold loans to the FHLB with such credit risk retention since February 2005. At June 30, 2020 and December 31, 2019, there were $39 million and $45 million, respectively, of such residential mortgage loans with credit risk recourse, upon which there have been negligible historical losses to the Corporation.

Fair Value Measurements

Fair Value Measurements	6 Months Ended
	Jun. 30, 2020
Fair Value Disclosures [Abstract]
Fair Value Measurements	Fair Value Measurements Fair value represents the estimated price at which an orderly transaction to sell an asset or to transfer a liability would take place between market participants at the measurement date under current market conditions (i.e., an exit price concept). The valuation methodologies for assets and liabilities measured at fair value on a recurring and non-recurring basis are described in the Fair Value Measurements note in the Corporation’s 2019 Annual Report on Form 10-K. There has been one significant change to the methodologies for assets and liabilities measured at fair value on a nonrecurring basis: Individually Evaluated Loans: The Corporation individually evaluates loans when a commercial loan relationship is in nonaccrual status or when a commercial and consumer loan relationship has its terms restructured in a TDR or when a loan meets the Corporation's definition of a probable TDR. Prior to January 1, 2020, management considered a loan impaired when it was probable that the Corporation would be unable to collect all amounts due according to the original contractual terms of the note agreement, including both principal and interest. See Note 7 for additional information regarding the Corporation’s individually evaluated loans. The table below presents the Corporation’s financial instruments measured at fair value on a recurring basis as of June 30, 2020 and December 31, 2019, aggregated by the level in the fair value hierarchy within which those measurements fall: ($ in Thousands) Fair Value Hierarchy June 30, 2020 December 31, 2019 Assets Investment securities available for sale U.S. Treasury securities Level 1 $ 26,735 $ — Agency securities Level 2 25,007 — Obligations of state and political subdivisions (municipal securities) Level 2 495,888 546,160 Residential mortgage-related securities FNMA / FHLMC Level 2 818,110 132,660 GNMA Level 2 605,561 985,139 Commercial mortgage-related securities FNMA / FHLMC Level 2 22,061 21,728 GNMA Level 2 803,362 1,310,207 Asset backed securities FFELP Level 2 340,474 263,693 SBA Level 2 9,575 — Other debt securities Level 2 3,000 3,000 Total investment securities available for sale Level 1 $ 26,735 $ — Total investment securities available for sale Level 2 3,123,039 3,262,586 Equity securities with readily determinable fair values Level 1 1,647 1,646 Residential loans held for sale Level 2 196,673 136,280 Interest rate-related instruments (a) Level 2 238,003 77,024 Foreign currency exchange forwards (a) Level 2 4,200 4,226 Commodity contracts (a) Level 2 38,543 20,528 Interest rate lock commitments to originate residential mortgage loans held for sale Level 3 12,837 2,527 Liabilities Interest rate-related instruments (a) Level 2 $ 31,472 $ 13,073 Foreign currency exchange forwards (a) Level 2 4,102 4,048 Commodity contracts (a) Level 2 36,998 19,624 Forward commitments to sell residential mortgage loans Level 3 1,293 710 (a) Figures are presented gross before netting. See Note 10 and Note 11 for information relating to the impact of offsetting derivative assets and liabilities and cash collateral with the same counterparty where there is a legally enforceable master netting agreement in place. The table below presents a rollforward of the consolidated balance sheets amounts for the six months ended June 30, 2020 and the year ended December 31, 2019, for the Corporation's mortgage derivatives measured on a recurring basis and classified within Level 3 of the fair value hierarchy: ($ in Thousands) Interest rate lock commitments to originate residential mortgage loans held for sale Forward commitments to sell residential mortgage loans Total Balance December 31, 2018 $ 2,208 $ 2,072 $ 140 New production 24,164 (2,367) 26,531 Closed loans / settlements (29,375) (5,968) (23,407) Other 5,530 6,973 (1,443) Mortgage derivative gain (loss) 319 (1,362) 1,681 Balance December 31, 2019 $ 2,527 $ 710 $ 1,817 New production $ 44,349 $ (439) $ 44,788 Closed loans / settlements (37,505) (12,197) (25,308) Other 3,467 13,218 (9,752) Mortgage derivative gain (loss) 10,310 582 9,727 Balance June 30, 2020 $ 12,837 $ 1,293 $ 11,544 The closing ratio on interest rate lock commitments to originate residential mortgage loans held for sale is a Level 3 measurement, and was 88% at June 30, 2020. The following table presents the carrying value of equity securities without readily determinable fair values still held as of June 30, 2020 that are measured under the measurement alternative and the related adjustments recorded during the periods presented for those securities with observable price changes. These securities are included in the nonrecurring fair value tables when applicable price changes are observable. Also shown are the cumulative upward and downward adjustments for the Corporation's equity securities without readily determinable fair values as of June 30, 2020: ($ in Thousands) Equity securities without readily determinable fair values Carrying value as of December 31, 2019 $ 13,444 Carrying value changes — Carrying value as of June 30, 2020 $ 13,444 Cumulative upward carrying value changes between January 1, 2018 and June 30, 2020 $ 13,444 Cumulative downward carrying value changes/impairment between January 1, 2018 and June 30, 2020 $ — The table below presents the Corporation’s assets measured at fair value on a nonrecurring basis, aggregated by the level in the fair value hierarchy within which those measurements fall: Consolidated Statements of Income Adjustment Recognized on the Consolidated Statements of Income ($ in Thousands) Fair Value Hierarchy Fair Value June 30, 2020 Assets Individually evaluated loans (a) Level 3 $ 88,416 Provision for credit losses $ (58,523) OREO (b) Level 2 6,611 Other noninterest expense (2,273) Mortgage servicing rights Level 3 49,423 Mortgage banking, net (17,029) December 31, 2019 Assets Impaired loans (c) Level 3 $ 45,792 Provision for credit losses (d) $ (66,172) OREO (b) Level 2 3,565 Other noninterest expense (1,860) Mortgage servicing rights Level 3 72,532 Mortgage banking, net (63) Equity securities Level 3 13,444 Investment securities gains (losses), net 13,444 (a) Includes probable TDRs which are individually analyzed, net of the related allowance for loan losses. (b) If the fair value of the collateral exceeds the carrying amount of the asset, no charge off or adjustment is necessary, the asset is not considered to be carried at fair value, and is therefore not included in the table. (c) Represents individually evaluated impaired loans, net of the related allowance for loan losses. (d) Represents provision for credit losses on individually evaluated impaired loans. Certain nonfinancial assets and nonfinancial liabilities measured at fair value on a nonrecurring basis include the fair value analysis in the goodwill impairment test, and intangible assets and other nonfinancial long-lived assets measured at fair value for impairment assessment. The Corporation's significant Level 3 measurements which employ unobservable inputs that are readily quantifiable pertain to MSRs and individually evaluated loans. The table below presents information about these inputs and further discussion is found above: June 30, 2020 Valuation Technique Significant Unobservable Input Range of Inputs Weighted Average Input Applied Mortgage servicing rights Discounted cash flow Discount rate 9% - 14% 9% Mortgage servicing rights Discounted cash flow Constant prepayment rate 12% - 35% 18% Individually evaluated loans Appraisals / Discounted cash flow Collateral / Discount factor 0% - 68% 66% Fair Value of Financial Instruments The Corporation is required to disclose estimated fair values for its financial instruments. Fair value estimates are set forth below for the Corporation’s financial instruments: June 30, 2020 December 31, 2019 ($ in Thousands) Fair Value Hierarchy Level Carrying Amount Fair Value Carrying Amount Fair Value Financial assets Cash and due from banks Level 1 $ 443,500 $ 443,500 $ 373,380 $ 373,380 Interest-bearing deposits in other financial institutions Level 1 1,569,006 1,569,006 207,624 207,624 Federal funds sold and securities purchased under agreements to resell Level 1 185 185 7,740 7,740 Investment securities held to maturity, net Level 1 999 1,036 999 1,018 Investment securities held to maturity, net Level 2 2,076,226 2,208,408 2,204,084 2,275,447 Investment securities available for sale Level 1 26,735 26,735 — — Investment securities available for sale Level 2 3,123,039 3,123,039 3,262,586 3,262,586 Equity securities with readily determinable fair values Level 1 1,647 1,647 1,646 1,646 Equity securities without readily determinable fair values Level 3 13,444 13,444 13,444 13,444 FHLB and Federal Reserve Bank stocks Level 2 206,281 206,281 227,347 227,347 Residential loans held for sale Level 2 196,673 196,673 136,280 136,280 Commercial loans held for sale Level 2 3,565 3,565 15,000 15,000 Loans, net Level 3 24,468,868 24,390,225 22,620,068 22,399,621 Bank and corporate owned life insurance Level 2 676,196 676,196 671,948 671,948 Derivatives (other assets) (a) Level 2 280,746 280,746 101,778 101,778 Interest rate lock commitments to originate residential mortgage loans held for sale (other assets) Level 3 12,837 12,837 2,527 2,527 Financial liabilities Noninterest-bearing demand, savings, interest-bearing demand, and money market accounts Level 3 $ 24,302,540 $ 24,302,540 $ 21,156,261 $ 21,156,261 Brokered CDs and other time deposits (b) Level 2 2,248,904 2,267,551 2,622,803 2,622,803 Short-term funding (c) Level 2 181,828 181,828 465,113 465,113 Long-term funding (excluding PPPLF) Level 2 548,937 576,667 549,343 572,873 PPPLF Level 2 1,009,760 1,009,926 — — FHLB advances Level 2 2,657,016 2,851,632 3,180,967 3,207,793 Standby letters of credit (d) Level 2 2,644 2,644 2,710 2,710 Derivatives (accrued expenses and other liabilities) (a) Level 2 72,572 72,572 36,745 36,745 Forward commitments to sell residential mortgage loans (accrued expenses and other liabilities) Level 3 1,293 1,293 710 710 (a) Figures are presented gross before netting. See Note 10 and Note 11 for information relating to the impact of offsetting derivative assets and liabilities and cash collateral with the same counterparty where there is a legally enforceable master netting agreement in place. (b) When the estimated fair value is less than the carrying value, the carrying value is reported as the fair value. (c) The carrying amount is a reasonable estimate of fair value for existing short-term funding. (d) The commitment on standby letters of credit was $265 million at June 30, 2020 and $278 million at December 31, 2019. See Note 12 for additional information on the standby letters of credit and for information on the fair value of lending-related commitments.

Retirement Plans

Retirement Plans	6 Months Ended
	Jun. 30, 2020
Retirement Benefits [Abstract]
Retirement Plans	Retirement Plans The Corporation has a noncontributory defined benefit retirement account plan, the RAP, covering substantially all employees who meet participation requirements. The benefits are based primarily on years of service and the employee’s compensation paid. Employees of acquired entities generally participate in the RAP after consummation of the business combinations. Any retirement plans of acquired entities are typically merged into the RAP after completion of the mergers, and credit is usually given to employees for years of service at the acquired institution for vesting and eligibility purposes. The Corporation also provides legacy healthcare access to a limited group of retired employees from a previous acquisition in the Postretirement Plan. There are no other active retiree healthcare plans. The Huntington branch acquisition closed on June 14, 2019, and the employees gained as a result of the transaction became eligible to participate in the RAP on the same date, with their vesting service credit based on their prior hours of service with Huntington. See Note 2 for additional information on the Huntington branch acquisition. The First Staunton acquisition closed on February 14, 2020, and the employees who met the required criteria as a result of the transaction became eligible to participate in the RAP on February 15, 2020, with their vesting service credit based on their prior hours of service with First Staunton. See Note 2 for additional information on the First Staunton acquisition. The components of net periodic pension cost and net periodic benefit cost for the RAP and Postretirement Plan for the three and six months ended June 30, 2020 and 2019 were as follows: Three Months Ended June 30, Six Months Ended June 30, ($ in Thousands) 2020 2019 2020 2019 Components of Net Periodic Benefit Cost RAP Service cost $ 2,165 $ 1,925 $ 4,330 $ 3,850 Interest cost 2,008 2,413 4,015 4,825 Expected return on plan assets (6,405) (6,075) (12,810) (12,150) Amortization of prior service cost (19) (19) (38) (38) Amortization of actuarial loss (gain) 803 65 1,610 130 Total net periodic pension cost $ (1,449) $ (1,691) $ (2,893) $ (3,383) Postretirement Plan Interest cost $ 20 $ 26 $ 39 $ 52 Amortization of prior service cost (19) (19) (38) (38) Amortization of actuarial loss (gain) — (1) — (2) Total net periodic benefit cost $ 1 $ 6 $ 2 $ 13 The components of net periodic pension cost and net periodic benefit cost, other than the service cost component, are included in the line item other of noninterest expense on the consolidated statements of income. The service cost components are included in personnel on the consolidated statements of income. The Corporation’s funding policy is to pay at least the minimum amount required by federal law and regulations, with consideration given to the maximum funding amounts allowed. The Corporation regularly reviews the funding of its RAP. There were no contributions during the six months ended June 30, 2020 and 2019.

Segment Reporting

Segment Reporting	6 Months Ended
	Jun. 30, 2020
Segment Reporting [Abstract]
Segment Reporting	Segment Reporting The Corporation utilizes a risk-based internal profitability measurement system to provide strategic business unit reporting. The profitability measurement system is based on internal management methodologies designed to produce consistent results and reflect the underlying economics of the units. Certain strategic business units have been combined for segment information reporting purposes where the nature of the products and services, the type of customer, and the distribution of those products and services are similar. The three reportable segments are Corporate and Commercial Specialty; Community, Consumer, and Business; and Risk Management and Shared Services. The financial information of the Corporation’s segments has been compiled utilizing the accounting policies described in the Corporation’s 2019 Annual Report on Form 10-K and Note 3 in this Quarterly Report on Form 10-Q, with certain exceptions. The more significant of these exceptions are described herein. The reportable segment results are presented based on the Corporation's internal management accounting process. The management accounting policies and processes utilized in compiling segment financial information are highly subjective and, unlike financial accounting, are not based on authoritative guidance similar to U.S. GAAP. As a result, reported segments and the financial information of the reported segments are not necessarily comparable with similar information reported by other financial institutions. Furthermore, changes in management structure or allocation methodologies and procedures may result in changes in previously reported segment financial data. Additionally, the information presented is not indicative of how the segments would perform if they operated as independent entities. To determine financial performance of each segment, the Corporation allocates FTP assignments, the provision for credit losses, certain noninterest expenses, income taxes, and equity to each segment. Allocation methodologies are subject to periodic adjustment as the internal management accounting system is revised, the interest rate environment evolves, and business or product lines within the segments change. Also, because the development and application of these methodologies is a dynamic process, the financial results presented may be periodically reviewed. The Corporation allocates net interest income using an internal FTP methodology that charges users of funds (assets) and credits providers of funds (liabilities, primarily deposits) based on the maturity, prepayment and / or repricing characteristics of the assets and liabilities. The net effect of this allocation is offset in the Risk Management and Shared Services segment to ensure consolidated totals reflect the Corporation's net interest income. The net FTP allocation is reflected as net intersegment income (expense) in the accompanying tables. A credit provision is allocated to segments based on the expected long-term annual net charge off rates attributable to the credit risk of loans managed by the segment during the period. In contrast, the level of the consolidated provision for credit losses is determined based on an allowance model using the methodologies described in Note 3 in this Quarterly Report on Form 10-Q. The net effect of the credit provision is recorded in Risk Management and Shared Services. Indirect expenses incurred by certain centralized support areas are allocated to segments based on actual usage (for example, volume measurements) and other criteria. Certain types of administrative expense and bank-wide expense accruals (including amortization of CDIs and other intangible assets associated with acquisitions, acquisition-related costs, and asset gains on disposed business units) are generally not allocated to segments. Income taxes are allocated to segments based on the Corporation’s estimated effective tax rate, with certain segments adjusted for any tax-exempt income or non-deductible expenses. Equity is allocated to the segments based on regulatory capital requirements and in proportion to an assessment of the inherent risks associated with the business of the segment (including interest, credit and operating risk). A brief description of each business segment is presented below. A more in-depth discussion of these segments can be found in the Segment Reporting footnote in the Corporation’s 2019 Annual Report on Form 10-K. The Corporate and Commercial Specialty segment serves a wide range of customers including larger businesses, developers, not-for-profits, municipalities, and financial institutions by providing lending and deposit solutions as well as the support to deliver, fund, and manage such banking solutions. In addition, this segment provides a variety of investment and fiduciary products and services to individuals and small to mid-sized businesses. The Community, Consumer, and Business segment serves individuals, as well as small and mid-sized businesses, by providing lending and deposit solutions. In addition, the Corporation offered insurance and risk consulting services. During the second quarter of 2020, the Corporation sold ABRC. The Risk Management and Shared Services segment includes key shared operational functions and also includes residual revenue and expenses, representing the difference between actual amounts incurred and the amounts allocated to operating segments, including interest rate risk residuals (FTP mismatches) and credit risk and provision residuals (long-term credit charge mismatches). All First Staunton and Huntington branch acquisition related costs as well as the gain on sale of ABRC are included in the Risk Management and Shared Services segment. During the first quarter of 2020, the Corporation reassigned goodwill of approximately $4 million to the Corporate and Commercial Specialty segment from the Community, Consumer and Business segment as a result of a reorganization of the investment and fiduciary businesses. The goodwill reassigned was attributable to the Corporation's acquisition of Whitnell & Co. in 2017. Also effective in the first quarter of 2020, the marketing business unit, formerly part of the Risk Management and Shared Services segment, was reorganized under the Community, Consumer and Business segment. Information about the Corporation’s segments is presented below: Corporate and Commercial Specialty Three Months Ended June 30, Six Months Ended June 30, ($ in Thousands) 2020 2019 2020 2019 Net interest income $ 98,824 $ 114,232 $ 206,577 $ 228,162 Net intersegment interest income (expense) 6,889 (13,326) (3,856) (28,881) Segment net interest income 105,713 100,906 202,721 199,281 Noninterest income 30,691 31,267 65,124 58,414 Total revenue 136,405 132,174 267,845 257,695 Credit provision 13,713 12,585 25,885 25,169 Noninterest expense 50,837 56,450 102,098 111,383 Income (loss) before income taxes 71,855 63,139 139,862 121,144 Income tax expense (benefit) 13,446 12,244 26,117 23,411 Net income $ 58,410 $ 50,895 $ 113,745 $ 97,732 Allocated goodwill $ 530,144 $ 530,106 Community, Consumer, and Business Three Months Ended June 30, Six Months Ended June 30, ($ in Thousands) 2020 2019 2020 2019 Net interest income $ 73,120 $ 77,013 $ 148,047 $ 156,699 Net intersegment interest income (expense) 14,340 22,804 33,025 43,551 Segment net interest income 87,459 99,817 181,072 200,250 Noninterest income 58,557 62,123 116,207 120,398 Total revenue 146,017 161,940 297,279 320,648 Credit provision 5,429 4,626 10,537 9,311 Noninterest expense 122,290 119,694 238,721 232,612 Income (loss) before income taxes 18,298 37,620 48,021 78,725 Income tax expense (benefit) 3,843 7,900 10,084 16,532 Net income $ 14,455 $ 29,720 $ 37,936 $ 62,193 Allocated goodwill $ 577,758 $ 645,913 Risk Management and Shared Services Three Months Ended June 30, Six Months Ended June 30, ($ in Thousands) 2020 2019 2020 2019 Net interest income $ 17,929 $ 22,375 $ 38,190 $ 44,306 Net intersegment interest income (expense) (21,229) (9,478) (29,169) (14,671) Segment net interest income (3,301) 12,896 9,021 29,635 Noninterest income (a) 165,242 2,447 171,465 8,228 Total revenue 161,941 15,343 180,486 37,863 Credit provision 41,858 (9,211) 77,579 (20,480) Noninterest expense (b) 10,280 21,634 34,779 45,456 Income (loss) before income taxes 109,802 2,919 68,129 12,887 Income tax expense (benefit) 33,950 (1,127) 25,255 1,466 Net income $ 75,853 $ 4,047 $ 42,874 $ 11,422 Allocated goodwill $ — $ — Consolidated Total Three Months Ended June 30, Six Months Ended June 30, ($ in Thousands) 2020 2019 2020 2019 Net interest income $ 189,872 $ 213,619 $ 392,814 $ 429,167 Net intersegment interest income (expense) — — — — Segment net interest income 189,872 213,619 392,814 429,167 Noninterest income (a) 254,490 95,837 352,796 187,040 Total revenue 444,362 309,457 745,610 616,206 Credit provision 61,000 8,000 114,001 14,000 Noninterest expense (b) 183,407 197,779 375,598 389,450 Income (loss) before income taxes 199,955 103,678 256,012 212,756 Income tax expense (benefit) 51,238 19,017 61,457 41,409 Net income $ 148,718 $ 84,661 $ 194,555 $ 171,347 Allocated goodwill $ 1,107,902 $ 1,176,019 (a) For the three and six months ended June 30, 2020, the Corporation recognized a $163 million asset gain related to the sale of ABRC. (b) For the three months ended both June 30, 2020 and 2019, the Risk Management and Shared Services segment included less than $1 million and approximately $4 million respectively, of acquisition related noninterest expense. For the six months ended June 30, 2020 and 2019, the Risk Management and Shared Services segment included approximately $2 million and $4 million respectively, of acquisition related noninterest expense.

Accumulated Other Comprehensive

Accumulated Other Comprehensive Income (Loss)	6 Months Ended
	Jun. 30, 2020
Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]
Accumulated Other Comprehensive Income (Loss)	Accumulated Other Comprehensive Income (Loss) The following tables summarize the components of accumulated other comprehensive income (loss) at June 30, 2020 and 2019, including changes during the preceding three and six month periods as well as any reclassifications out of accumulated other comprehensive income (loss): ($ in Thousands) Investment Defined Benefit Accumulated Balance December 31, 2019 $ 3,989 $ (37,172) $ (33,183) Other comprehensive income (loss) before reclassifications 48,060 — 48,060 Amounts reclassified from accumulated other comprehensive income (loss) Investment securities losses (gains), net (9,214) — (9,214) Personnel expense — (75) (75) Other expense — 1,610 1,610 Interest income 1,332 — 1,332 Income tax (expense) benefit (10,066) (385) (10,450) Net other comprehensive income (loss) during period 30,112 1,150 31,263 Balance June 30, 2020 $ 34,101 $ (36,021) $ (1,920) Balance December 31, 2018 $ (75,643) $ (49,330) $ (124,972) Other comprehensive income (loss) before reclassifications 89,966 — 89,966 Amounts reclassified from accumulated other comprehensive income (loss) Investment securities losses (gains), net (2,143) — (2,143) Personnel expense — (75) (75) Other expense — 128 128 Interest income 288 — 288 Income tax (expense) benefit (22,242) (13) (22,255) Net other comprehensive income (loss) during period 65,869 40 65,909 Balance June 30, 2019 $ (9,773) $ (49,290) $ (59,063) ($ in Thousands) Investments Defined Benefit Accumulated Balance March 31, 2020 $ 19,620 $ (36,595) $ (16,974) Other comprehensive income (loss) before reclassifications 21,641 — 21,641 Amounts reclassified from accumulated other comprehensive income (loss) Investment securities losses (gains), net (3,096) — (3,096) Personnel expense — (38) (38) Other expense — 803 803 Interest income 776 — 776 Income tax (expense) benefit (4,841) (192) (5,032) Net other comprehensive income (loss) during period 14,481 573 15,054 Balance June 30, 2020 $ 34,101 $ (36,021) $ (1,920) Balance March 31, 2019 $ (54,065) $ (49,310) $ (103,375) Other comprehensive income (loss) before reclassifications 59,476 — 59,476 Amounts reclassified from accumulated other comprehensive income (loss) Investment securities loss (gain), net (463) — (463) Personnel expense — (38) (38) Other expense — 64 64 Interest income 218 — 218 Income tax (expense) benefit (14,940) (7) (14,947) Net other comprehensive income (loss) during period 44,292 20 44,311 Balance June 30, 2019 $ (9,773) $ (49,290) $ (59,063)

Revenue from Contracts with Cus

Revenue from Contracts with Customers	6 Months Ended
	Jun. 30, 2020
Revenue Recognition [Abstract]
Revenue from Contracts with Customers	Revenue from Contracts with Customers Revenue from contracts with customers is recognized when obligations under the terms of a contract with the Corporation's customer are satisfied. Revenue is measured as the amount of consideration we expect to receive in exchange for transferring goods or providing services. We do not have any material significant payment terms as payment is received at or shortly after the satisfaction of the performance obligation. The Corporation's disaggregated revenue by major source is presented below: Corporate and Commercial Specialty Three Months Ended June 30, Six Months Ended June 30, ($ in Thousands) 2020 2019 2020 2019 Insurance commissions and fees $ 47 $ 49 $ 123 $ 174 Wealth management fees (a) 15,814 15,369 31,621 30,469 Service charges and deposit account fees 4,307 3,309 7,859 6,806 Card-based fees (b) 228 455 743 889 Other revenue 294 865 1,081 1,049 Noninterest Income (in-scope of Topic 606) $ 20,690 $ 20,047 $ 41,426 $ 39,387 Noninterest Income (out-of-scope of Topic 606) 10,002 11,220 23,698 19,026 Total Noninterest Income $ 30,691 $ 31,267 $ 65,124 $ 58,414 Community, Consumer, and Business Three Months Ended June 30, Six Months Ended June 30, ($ in Thousands) 2020 2019 2020 2019 Insurance commissions and fees $ 22,381 $ 22,933 $ 44,910 $ 48,268 Wealth management fees (a) 5,102 5,321 10,111 10,402 Service charges and deposit account fees 7,173 12,104 18,838 23,703 Card-based fees (b) 8,647 9,674 17,693 18,486 Other revenue 2,861 2,349 5,147 4,621 Noninterest Income (in-scope of Topic 606) $ 46,163 $ 52,381 $ 96,698 $ 105,479 Noninterest Income (out-of-scope of Topic 606) 12,394 9,742 19,509 14,919 Total Noninterest Income $ 58,557 $ 62,123 $ 116,207 $ 120,398 Risk Management and Shared Services Three Months Ended June 30, Six Months Ended June 30, ($ in Thousands) 2020 2019 2020 2019 Insurance commissions and fees $ 3 $ 3 $ 6 $ 7 Service charges and deposit account fees 4 14 10 32 Card-based fees (b) 47 48 94 97 Other revenue 26 210 49 438 Noninterest Income (in-scope of Topic 606) $ 80 $ 275 $ 158 $ 574 Noninterest Income (out-of-scope of Topic 606) (c) 165,161 2,172 171,307 7,653 Total Noninterest Income $ 165,242 $ 2,447 $ 171,465 $ 8,228 Consolidated Total Three Months Ended June 30, Six Months Ended June 30, ($ in Thousands) 2020 2019 2020 2019 Insurance commissions and fees $ 22,430 $ 22,985 $ 45,038 $ 48,449 Wealth management fees (a) 20,916 20,691 41,732 40,870 Service charges and deposit account fees 11,484 15,426 26,706 30,542 Card-based fees (b) 8,922 10,177 18,529 19,472 Other revenue 3,181 3,424 6,277 6,108 Noninterest Income (in-scope of Topic 606) $ 66,933 $ 72,703 $ 138,282 $ 145,441 Noninterest Income (out-of-scope of Topic 606) (c) 187,557 23,134 214,515 41,599 Total Noninterest Income $ 254,490 $ 95,837 $ 352,796 $ 187,040 (a) Includes trust, asset management, brokerage, and annuity fees. (b) Certain card-based fees are out-of-scope of Topic 606. (c) Both the three and six months ended June 30, 2020 include a gain of $163 million from the sale of ABRC. Below is a listing of performance obligations for the Corporation's main revenue streams: Revenue Stream Noninterest income in-scope of Topic 606 Insurance commissions and fees The Corporation's insurance revenue had two distinct performance obligations. The first performance obligation was the selling of the policy as an agent for the carrier. This performance obligation was satisfied upon binding of the policy. The second performance obligation was the ongoing servicing of the policy which was satisfied over the life of the policy. For employee benefits, the payment was typically received monthly. For property and casualty, payments can vary, but were typically received at, or in advance, of the policy period. Service charges and deposit account fees Service charges and deposit account fees consist of monthly service fees (i.e. business analyzed fees and consumer service charges) and other deposit account related fees. The Corporation's performance obligation for monthly service fees is generally satisfied, and the related revenue recognized, over the period in which the service is provided. Other deposit account related fees are largely transactional based, and therefore, the Corporation's performance obligation is satisfied, and related revenue recognized, at a point in time. Payment for service charges and deposit account fees are primarily received immediately or in the following month through a direct charge to customers’ accounts. Card-based fees (a) Card-based fees are primarily comprised of debit and credit card income, ATM fees, and merchant services income. Debit and credit card income is primarily comprised of interchange fees earned whenever the Corporation's debit and credit cards are processed through card payment networks. ATM and merchant fees are largely transactional based, and therefore, the Corporation's performance obligation is satisfied, and related revenue recognized, at a point in time. Payment is typically received immediately or in the following month. Trust and asset management fees (b) Trust and asset management income is primarily comprised of fees earned from the management and administration of trusts and other customer assets. The Corporation's performance obligation is generally satisfied over time and the resulting fees are recognized monthly, based upon the month-end market value of the assets under management and the applicable fee rate. Payment is generally received a few days after month end through a direct charge to the customers’ accounts. The Corporation's performance obligation for these transactional-based services is generally satisfied, and related revenue recognized, at a point in time (i.e., as incurred). Payment is received shortly after services are rendered. Brokerage commissions and fees (b) Brokerage commissions and fees primarily consist of investment advisory, brokerage, retirement services, and annuities. The Corporation's performance obligation for investment advisory services and retirement services is generally satisfied, and the related revenue recognized, over the period in which the services are provided. The performance obligation for annuities is satisfied upon sale of the annuity, and therefore, the related revenue is primarily recognized at the time of sale. Payments for these services are typically received immediately or in advance of the service. (a) Certain card-based fees are out-of-scope of Topic 606. (b) Trust and asset management fees and brokerage commissions and fees are included in wealth management fees. Arrangements with Multiple Performance Obligations The Corporation's contracts with customers may include multiple performance obligations. For such arrangements, we allocate revenue to each performance obligation based on its relative standalone selling price. We generally determine standalone selling prices based on the expected cost plus margin. Practical Expedients We do not disclose the value of unsatisfied performance obligations for contracts with an original expected length of one year or less. Using the practical expedient, for contracts with a term of one year or less, the Corporation recognizes incremental costs of obtaining those contracts as an expense when incurred.

Leases

Leases	6 Months Ended
	Jun. 30, 2020
Leases [Abstract]
Leases	Leases The Corporation has operating leases for retail and corporate offices, land, and equipment. The Corporation also has finance leases for land. These operating leases have original terms of 1 year or longer with remaining maturities up to 42 years, some of which include options to extend the lease term. An analysis of the lease options has been completed and any purchase options or optional periods that the Corporation is reasonably likely to extend have been included in the capitalization. The discount rate used to capitalize the operating leases is the Corporation's FHLB borrowing rate on the date of lease commencement. When determining the rate to discount specific lease obligations, the repayment period and term are considered. Operating and finance lease costs and cash flows resulting from these leases are presented below: ($ in Thousands) Three Months Ended June 30, Six Months Ended June 30, 2020 2019 2020 2019 Operating Lease Costs $ 2,631 $ 2,888 $ 5,254 $ 5,793 Finance Lease Costs 31 — 67 — Operating Lease Cash Flows 2,700 2,762 5,432 5,570 Finance Lease Cash Flows 21 — 42 — The lease classifications on the consolidated balance sheets were as follows: ($ in Thousands) Consolidated Balance Sheets Category June 30, 2020 December 31, 2019 Amount Operating lease right-of-use asset Premises and equipment $ 39,674 $ 45,381 Finance lease right-of-use asset Other assets 1,154 2,188 Operating lease liability Accrued expenses and other liabilities 43,377 49,292 Finance lease liability Other long-term funding 1,202 2,209 The lease payment obligations, weighted-average remaining lease term, and weighted-average discount rate were as follows: June 30, 2020 December 31, 2019 ($ in Thousands) Lease payments Weighted-average lease term (in years) Weighted-average discount rate Lease payments Weighted-average lease term (in years) Weighted-average discount rate Operating leases Equipment $ 5 0.69 2.72 % $ 46 0.83 2.72 % Retail and corporate offices 42,293 6.22 3.35 % 48,940 6.49 3.34 % Land 6,663 9.30 3.08 % 6,594 9.57 3.21 % Total operating leases $ 48,961 6.61 3.31 % $ 55,580 6.83 3.32 % Finance leases Land $ 1,225 2.14 1.05 % $ 4,827 39.67 3.99 % Total finance leases $ 1,225 2.14 1.05 % $ 4,827 39.67 3.99 % Contractual lease payment obligations for each of the next five years and thereafter, in addition to a reconciliation to the Corporation’s lease liability, were as follows: ($ in Thousands) Operating Leases Finance Leases Amount Six Months Ending December 31, 2020 $ 3,065 $ 80 $ 3,145 2021 10,387 172 10,559 2022 8,066 973 9,039 2023 5,810 — 5,810 2024 5,108 — 5,108 Beyond 2024 16,526 — 16,526 Total lease payments $ 48,961 $ 1,225 $ 50,187 Less: interest 5,584 23 5,607 Present value of lease payments $ 43,377 $ 1,202 $ 44,579

Summary of Significant Accoun_2

Summary of Significant Accounting Policies (Policies)	6 Months Ended
	Jun. 30, 2020
Accounting Standards Update and Change in Accounting Principle [Abstract]
Investment Securities	Investment Securities Management measures expected credit losses on held to maturity securities on a collective basis by major security type. Accrued interest receivable on held to maturity securities is excluded from the estimate of credit losses. The estimate of expected credit losses considers historical credit loss information that is adjusted for current conditions and reasonable and supportable forecasts and is included in investment securities held to maturity, net on the consolidated balance sheets. For available for sale securities, the Corporation evaluates whether any decline in fair value has resulted from credit losses or other factors. In making this assessment, management considers the extent to which fair value is less than amortized cost, any changes to the rating of the security by a rating agency, and adverse conditions specifically related to the security, among other factors. If this assessment indicates that a credit loss exists, the present value of cash flows expected to be collected from the security are compared to the amortized cost basis of the security. If the present value of cash flows expected to be collected is less than the amortized cost basis, a credit loss exists and an allowance for credit losses on investments is recorded for the credit loss, limited by the amount that the fair value is less than the amortized cost basis. Any impairment that has not been recorded through an allowance for credit losses on investments is recognized in other comprehensive income. Changes in the allowance for credit losses on investments are recorded as provision for, or reversal of, credit loss expense. Losses are charged against the allowance when management believes the available for sale security is uncollectible or when either of the criteria regarding intent or requirement to sell is met. Accrued interest receivable on available for sale debt securities is excluded from the estimate of credit losses.
Allowance for Loan Losses	Allowance for Credit Losses on Loans The level of the allowance for loan losses represents management's estimate of an amount appropriate to provide for lifetime credit losses in the loan portfolio at the balance sheet date. The allocation methodology applied by the Corporation, designed to assess the appropriateness of the allowance for loan losses, includes an allocation methodology, as well as management’s ongoing review and grading of the loan portfolio into criticized loan categories. The allocation methodology focuses on evaluation of several factors, including but not limited to: evaluation of facts and issues related to specific loans, management's ongoing review and grading of the loan portfolio using a dual risk rating system leveraging probability of default and loss given default, consideration of historical credit loss and delinquency experience on each portfolio category, trends in past due and nonaccrual loans, the level of potential problem loans, the risk characteristics of the various classifications of loans, changes in the size and character of the loan portfolio, concentrations of loans to specific borrowers or industries, existing economic conditions and economic forecasts, the fair value of underlying collateral, and other qualitative and quantitative factors which could affect potential loan losses. The Corporation utilizes the Moody's Baseline economic forecast in the allowance model and applies that forecast over a reasonable and supportable period with reversion to historical losses. For additional detail on the reasonable and supportable period and reversion methodology, see Note 7. Potential problem loans are generally defined by management to include loans rated as substandard by management. Assessing these numerous factors involves significant judgment. The provision for loan losses is predominantly a function of the result of the methodology and other qualitative and quantitative factors used to determine the allowance for loan losses. Management individually analyzes loans that do not share similar risk characteristics to other loans in the portfolio. Management has determined that commercial loan relationships that have nonaccrual status or commercial and retail loans that have had their terms restructured in a TDR meet this definition. Probable TDRs are loans the Corporation has reviewed individually to determine whether there is a high likelihood that the loans will default and will require restructuring in the near future. Probable TDRs could be classified as Pass, Special Mention, Substandard or Nonaccrual within the Corporation's credit quality analysis depending on the specific circumstances surrounding the individual credits. Accrued interest receivable on loans is excluded from the estimate of credit losses.
Allowance for Unfunded Commitments	The allowance for unfunded commitments leverages the same methodology utilized to measure the allowance for loan losses. The Corporation estimates expected credit losses over the contractual period in which the Corporation is exposed to credit risk via a contractual obligation to extend credit, unless that obligation is unconditionally cancellable by the Corporation. The estimate includes consideration of the likelihood that funding will occur and an estimate of expected credit losses on commitments expected to be funded over its estimated life. See Note 7 for additional information on the ACLL and Note 12 for additional information on the allowance for unfunded commitments.
Impact of adopting ASU 2016-13 Financial Instruments - Credit Losses (Topic 326)	Impact of adopting ASU 2016-13 Financial Instruments - Credit Losses (Topic 326) The following table illustrates the adoption impact: December 31, 2019 January 1, 2020 ($ in Thousands) Allowance for Loan Losses Allowance for Unfunded Commitments CECL Day 1 Adjustment ACLL Beginning Balance Commercial and industrial $ 91,133 $ 12,276 $ 48,921 $ 152,330 Commercial real estate - owner occupied 10,284 127 (1,851) 8,560 Commercial and business lending 101,417 12,403 47,070 160,890 Commercial real estate - investor 40,514 530 2,287 43,331 Real estate construction 24,915 7,532 25,814 58,261 Commercial real estate lending 65,428 8,062 28,101 101,591 Total Commercial 166,846 20,465 75,171 262,482 Residential mortgage 16,960 — 33,215 50,175 Home equity 10,926 1,038 14,240 26,204 Other consumer 6,639 405 8,520 15,564 Total consumer 34,525 1,443 55,975 91,943 Total loans $ 201,371 $ 21,907 $ 131,147 $ 354,425 The allowance for credit losses on held to maturity securities was approximately $61,000 at January 1, 2020, attributable entirely to the Corporation's municipal securities. At January 1, 2020, the adoption of ASU 2016-13 resulted in an increase to the allowance for loan losses of $112 million and an increase to the allowance for unfunded commitments of $19 million for a total increase to the ACLL of $131 million. A corresponding after tax decrease to common equity of $98 million was recorded along with a deferred tax asset of $33 million.
New Accounting Pronouncements Adopted	New Accounting Pronouncements Adopted Standard Description Date of adoption Effect on financial statements ASU 2016-13 Financial Instruments - Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments The FASB issued an amendment to replace the current incurred loss impairment methodology. Under the new guidance, entities will be required to measure expected credit losses by utilizing forward-looking information to assess an entity's ACL. The guidance also requires consideration of a broader range of reasonable and supportable information to inform credit loss estimates. The measurement of expected credit losses is based on relevant information about past events, including historical experience, current conditions, and reasonable and supportable forecasts that affect the collectability of the reported amount. An entity must use judgment in determining the relevant information and estimation methods that are appropriate in its circumstances. This amendment was effective for fiscal years beginning after December 15, 2019, including interim periods within those fiscal years. Entities should apply the amendment by means of a cumulative-effect adjustment to retained earnings as of the beginning of the fiscal year of adoption. ASU 2018-19 was issued to clarify that receivables arising from operating leases are not within the scope of Subtopic 326-20. Instead, impairment of receivables arising from operating leases should be accounted for in accordance with Topic 842, Leases. ASU 2019-04 was issued and provided entities alternatives for measurement of accrued interest receivable, clarified the steps entities should take when recording the transfer of loans or debt securities between measurement classifications or categories and clarifies that entities should include expected recoveries on financial assets. ASU 2019-05 was issued to provide entities that have certain instruments within the scope of Subtopic 320-20 with an option to irrevocably elect the fair value option in Subtopic 825-10. ASU 2020-02 was issued to further explain the measurement of current expected credit losses and the development, governance, and documentation of a systematic methodology. 1st Quarter 2020 The Corporation has adopted the Update using a modified retrospective approach. The Corporation has developed a CECL allowance model which calculates reserves over the life of the loan and is largely driven by portfolio characteristics, risk-grading, economic outlook, and key methodology assumptions. Those assumptions are based upon the existing probability of default and loss given default framework. At adoption, the Corporation utilized a single economic forecast over a 2-year reasonable and supportable forecast period. In the second year, the Corporation used straight-line reversion to historical losses. The Corporation recorded a $131 million adjustment to the ACL related to the adoption of this standard, which includes $61 thousand related to the held to maturity investment securities portfolio. The Corporation has elected to maintain pools accounted for under Subtopic 310-30 at adoption. The Corporation has elected to utilize the 2019 Capital Transition Relief for initial adoption, as well as the 2020 Capital Transition Relief as permitted under applicable regulations. The total impact at adoption equates to an approximately 29 bp net, after tax, reduction in the tangible common equity ratio. Results for the periods after January 1, 2020 are presented in accordance with ASC 326 while prior period amounts continue to be reported in accordance with previously applicable standards. Standard Description Date of adoption Effect on financial statements ASU 2018-13 Fair Value Measurement (Topic 820): Disclosure Framework—Changes to the Disclosure Requirements for Fair Value Measurement The FASB issued an amendment to add, modify, and remove disclosure requirements on fair value measurements in Topic 820, Fair Value Measurement, based on the FASB Concepts Statement "Conceptual Framework for Financial Reporting," including the consideration of costs and benefits. The amendment was effective for fiscal years, and interim periods within those fiscal years, beginning after December 15, 2019. The amendments on changes in unrealized gains and losses, the range and weighted average of significant unobservable inputs used to develop Level 3 fair value measurements, and the narrative description of measurement uncertainty should be applied prospectively for only the most recent interim or annual period presented in the initial fiscal year of adoption. All other amendments should be applied retrospectively to all periods presented upon their effective date. 1st Quarter 2020 The Corporation has evaluated and determined it has an immaterial impact with minor changes in presentation. ASU 2017-04 Intangibles - Goodwill and Other (Topic 350): Simplifying the Test for Goodwill Impairment The FASB issued an amendment to simplify the subsequent quantitative measurement of goodwill by eliminating step two from the goodwill impairment test. Instead, an entity will perform only step one of its quantitative goodwill impairment test by comparing the fair value of a reporting unit with its carrying amount, and then recognizing an impairment charge for the amount by which the carrying amount exceeds the reporting unit's fair value; however, the loss recognized should not exceed the total amount of goodwill allocated to that reporting unit. An entity will still have the option to perform a qualitative assessment for a reporting unit to determine if the quantitative step one impairment test is necessary. This amendment was effective for annual or interim goodwill impairment tests in fiscal years beginning after December 15, 2019. Entities should apply the amendment prospectively. 1st Quarter 2020 There has been no material impact on results of operations, financial position, and liquidity. The Corporation does its annual impairment testing in May. ASU 2020-03 Codification Improvements to Financial Instruments The FASB issued an amendment to further clarify that all entities are required to provide the fair value option disclosures in paragraphs 825-10-50-24 through 50-32. The amendment also states that paragraphs 820-10-35-2A(g) and 820-10-35-18L are to include the phrase nonfinancial items accounted for as derivatives under Topic 815 to be consistent with the previous amendments to Section 820-10-35 that were made by ASU No. 2018-09, Codification Improvements. The amendment also clarifies that the disclosure requirements in Topic 320 apply to the disclosure requirements in Topic 942 for depository and lending institutions along with improving the understandability of the guidance relating to subtopic 470-50 and subtopic 820-10. Lastly, the amendment clarifies that the contractual term of a net investment in a lease determined in accordance with Topic 842 should be the contractual term used to measure expected credit losses under Topic 326 and that when an entity regains control of financial assets sold, an ACL should be recorded in accordance with Topic 326. 1st Quarter 2020 The Corporation has evaluated and determined it has an immaterial impact. ASU 2020-04 Reference Rate Reform (Topic 848): Facilitation of the Effects of Reference Rate Reform on Financial Reporting The FASB issued an amendment to provide optional expedients and exceptions for applying GAAP to contracts, hedging relationships, and other transactions affected by reference rate reform if certain criteria are met. The amendment only applies to contracts, hedging relationships, and other transactions that reference LIBOR or another reference rate expected to be discontinued because of reference rate reform. The expedients and exceptions provided by the amendments do not apply to contract modifications made and hedging relationships entered into or evaluated after December 31, 2022, except for hedging relationships existing as of December 31, 2022, that an entity has elected certain optional expedients for and that are retained through the end of the hedging relationship. 1st Quarter 2020 The Corporation has evaluated the impact of the Update and determined the expedients provided allow for simpler, more streamlined modifications to the financial instruments referencing LIBOR. A small population of loans have been modified under the new standard. Future Accounting Pronouncements The expected impact of accounting pronouncements recently issued or proposed but not yet required to be adopted are displayed in the table below: Standard Description Date of anticipated adoption Effect on financial statements ASU 2018-14 The FASB issued an amendment to modify the disclosure requirements for employers that sponsor defined benefit pension or other postretirement plans. The amendments also added requirements to disclose the weighted-average interest crediting rates for cash balance plans and other plans with promised interest crediting rates and an explanation of the reasons for significant gains and losses related to changes in the benefit obligation for the period. The amendment also clarifies the disclosure requirements in paragraph 715-20-50-3, which states that certain information for defined benefit pension plans should be disclosed. The amendments in this Update remove disclosures that no longer are considered cost beneficial, clarify the specific requirements of disclosures, and add disclosure requirements identified as relevant. The amendment is effective for fiscal years ending after December 15, 2020. Entities should apply the amendments in this Update on a retrospective basis to all periods presented. Early adoption is permitted. 1st Quarter 2021 The Corporation is currently evaluating the impact on its results of operations, financial position, and liquidity. ASU 2020-01 Investments-Equity Securities (Topic 321), Investments-Equity Method and Joint Ventures (Topic 323), and Derivatives and Hedging (Topic 815) The FASB issued an amendment to clarify the interaction of the accounting for equity securities under Topic 321 and investments accounted for under the equity method of accounting in Topic 323 and the accounting for certain forward contracts and purchased options accounted for under Topic 815. The amendments clarify that an entity should consider observable transactions that require it to either apply or discontinue the equity method of accounting for the purposes of applying the measurement alternative in accordance with Topic 321 immediately before applying or upon discontinuing the equity method. The amendments also clarify that for the purpose of applying paragraph 815-10-15-141(a) an entity should not consider whether, upon the settlement of the forward contract or exercise of the purchased option, individually or with existing investments, the underlying securities would be accounted for under the equity method in Topic 323 or the fair value option in accordance with the financial instruments guidance in Topic 825. An entity also would evaluate the remaining characteristics in paragraph 815-010-15-141 to determine the accounting for those forward contracts and purchased options. 1st Quarter 2021 The Corporation is currently evaluating the impact on its results of operations, financial position, and liquidity.

Acquisitions Acquisitions (Tabl

Acquisitions Acquisitions (Tables)	Feb. 14, 2020	Jun. 14, 2019
Business Combinations [Abstract]
Schedule of Business Acquisitions, by Acquisition	The following table presents the estimated fair values of the assets acquired and liabilities assumed as of the acquisition date related to the First Staunton acquisition: ($ in Thousands) Purchase Accounting Adjustments February 14, 2020 Assets Cash and cash equivalents $ — $ 44,782 Investment securities available for sale (24) 98,743 Federal Home Loan Bank and Federal Reserve Bank stocks, at cost — 781 Loans (4,808) 369,741 Premises and equipment, net (3,005) 4,865 Bank owned life insurance 9 6,770 Goodwill 13,414 Core deposit intangibles (included in other intangible assets, net on the face of the consolidated balance sheets) 7,379 7,379 OREO (included in other assets on the face of the consolidated balance sheets) 670 762 Other assets 4,193 9,090 Total assets $ 556,328 Liabilities Deposits $ 1,285 $ 438,684 Other borrowings 61 34,613 Accrued expenses and other liabilities 179 6,730 Total liabilities $ 480,028 Total consideration paid $ 76,300	The following table presents the estimated fair values of the assets acquired and liabilities assumed as of the acquisition date related to Huntington branch acquisition: ($ in Thousands) Purchase Accounting Adjustments June 14, 2019 Assets Cash and cash equivalents $ — $ 551,250 Loans (1,552) 116,346 Premises and equipment, net 4,800 22,430 Goodwill 7,286 Core deposit intangibles (included in other intangible assets, net on the face of the consolidated balance sheets) 22,630 22,630 OREO (included in other assets on the face of the consolidated balance sheets) (2,561) 5,263 Other assets — 559 Total assets $ 725,764 Liabilities Deposits $ 156 $ 725,173 Other liabilities 70 590 Total liabilities $ 725,764
Financing Receivable, Purchased With Credit Deterioration	The carrying amount of those loans is as follows: ($ in Thousands) February 14, 2020 Purchase price of loans at acquisition $ 77,221 Allowance for credit losses at acquisition 3,504 Non-credit discount/(premium) at acquisition (951) Par value of acquired loans at acquisition $ 79,774

Summary of Significant Accoun_3

Summary of Significant Accounting Policies (Tables)	6 Months Ended
	Jun. 30, 2020
Accounting Standards Update and Change in Accounting Principle [Abstract]
Schedule of New Accounting Pronouncements and Changes in Accounting Principles	The following table illustrates the adoption impact: December 31, 2019 January 1, 2020 ($ in Thousands) Allowance for Loan Losses Allowance for Unfunded Commitments CECL Day 1 Adjustment ACLL Beginning Balance Commercial and industrial $ 91,133 $ 12,276 $ 48,921 $ 152,330 Commercial real estate - owner occupied 10,284 127 (1,851) 8,560 Commercial and business lending 101,417 12,403 47,070 160,890 Commercial real estate - investor 40,514 530 2,287 43,331 Real estate construction 24,915 7,532 25,814 58,261 Commercial real estate lending 65,428 8,062 28,101 101,591 Total Commercial 166,846 20,465 75,171 262,482 Residential mortgage 16,960 — 33,215 50,175 Home equity 10,926 1,038 14,240 26,204 Other consumer 6,639 405 8,520 15,564 Total consumer 34,525 1,443 55,975 91,943 Total loans $ 201,371 $ 21,907 $ 131,147 $ 354,425

Earnings Per Common Share (Tabl

Earnings Per Common Share (Tables)	6 Months Ended
	Jun. 30, 2020
Earnings Per Share [Abstract]
Calculations for basic and diluted earnings per common share	Presented below are the calculations for basic and diluted earnings per common share: Three Months Ended June 30, Six Months Ended June 30, (In Thousands, except per share data) 2020 2019 2020 2019 Net income $ 148,718 $ 84,661 $ 194,555 $ 171,347 Preferred stock dividends (4,144) (3,801) (7,945) (7,601) Net income available to common equity $ 144,573 $ 80,860 $ 186,611 $ 163,746 Common shareholder dividends (27,667) (27,571) (55,931) (55,650) Unvested share-based payment awards (222) (205) (351) (308) Undistributed earnings $ 116,684 $ 53,085 $ 130,329 $ 107,787 Undistributed earnings allocated to common shareholders $ 115,750 $ 52,690 $ 129,377 $ 107,098 Undistributed earnings allocated to unvested share-based payment awards 934 395 953 689 Undistributed earnings $ 116,684 $ 53,085 $ 130,329 $ 107,787 Basic Distributed earnings to common shareholders $ 27,667 $ 27,571 $ 55,931 $ 55,650 Undistributed earnings allocated to common shareholders 115,750 52,690 129,377 107,098 Total common shareholders earnings, basic $ 143,417 $ 80,261 $ 185,307 $ 162,748 Diluted Distributed earnings to common shareholders $ 27,667 $ 27,571 $ 55,931 $ 55,650 Undistributed earnings allocated to common shareholders 115,750 52,690 129,377 107,098 Total common shareholders earnings, diluted $ 143,417 $ 80,261 $ 185,307 $ 162,748 Weighted average common shares outstanding 152,393 162,180 153,547 163,049 Effect of dilutive common stock awards 757 1,492 813 1,469 Diluted weighted average common shares outstanding 153,150 163,672 154,360 164,518 Basic earnings per common share $ 0.94 $ 0.49 $ 1.21 $ 1.00 Diluted earnings per common share $ 0.94 $ 0.49 $ 1.20 $ 0.99

Stock-Based Compensation (Table

Stock-Based Compensation (Tables)	6 Months Ended
	Jun. 30, 2020
Retirement Benefits [Abstract]
Fair value assumptions of stock options	The following assumptions were used in estimating the fair value for options granted in the first six months of 2020 and full year 2019: 2020 2019 Dividend yield 3.50 % 3.30 % Risk-free interest rate 1.60 % 2.60 % Weighted average expected volatility 21.00 % 24.00 % Weighted average expected life 5.75 years 5.75 years Weighted average per share fair value of options $2.39 $4.00
Summary of company's stock option activities	A summary of the Corporation’s stock option activity for the six months ended June 30, 2020 is presented below: Stock Options Shares (a) Weighted Average Weighted Average Remaining Contractual Term Aggregate Intrinsic Value (a) Outstanding at December 31, 2019 5,543 $ 20.13 6.25 years $ 16,043 Granted 1,697 18.43 Exercised (110) 13.95 Forfeited or expired (219) 22.30 Outstanding at June 30, 2020 6,911 $ 19.74 6.73 years $ 213 Options Exercisable at June 30, 2020 4,242 $ 19.21 5.32 years $ 213 (a) In thousands
Summary of restricted stock awards activity (excluding salary shares)	The following table summarizes information about the Corporation’s restricted stock awards activity for the six months ended June 30, 2020: Restricted Stock Awards Shares (a) Weighted Average Outstanding at December 31, 2019 2,393 $ 22.39 Granted 1,032 18.38 Vested (804) 23.05 Forfeited (72) 22.64 Outstanding at June 30, 2020 2,550 $ 20.56 (a) In thousands

Investment Securities (Tables)

Investment Securities (Tables)	6 Months Ended
	Jun. 30, 2020
Investments, Debt and Equity Securities [Abstract]
Investment securities available for sale	The amortized cost and fair values of securities available for sale and held to maturity at June 30, 2020 were as follows: ($ in Thousands) Amortized Gross Gross Fair Value Investment securities available for sale U. S. Treasury securities $ 26,646 $ 88 $ — $ 26,735 Agency securities 24,982 25 — 25,007 Obligations of state and political subdivisions (municipal securities) 471,346 24,542 — 495,888 Residential mortgage-related securities FNMA / FHLMC 813,458 4,652 — 818,110 GNMA 592,338 13,222 — 605,561 Commercial mortgage-related securities FNMA / FHLMC 19,793 2,269 — 22,061 GNMA 782,577 20,786 — 803,362 Asset backed securities FFELP 356,532 — (16,058) 340,474 SBA 9,619 — (44) 9,575 Other debt securities 3,000 — — 3,000 Total investment securities available for sale $ 3,100,291 $ 65,584 $ (16,102) $ 3,149,773 Investment securities held to maturity U. S. Treasury securities $ 999 $ 36 $ — $ 1,036 Obligations of state and political subdivisions (municipal securities) 1,435,938 110,132 (53) 1,546,018 Residential mortgage-related securities FNMA / FHLMC 71,872 3,400 — 75,271 GNMA 207,908 7,012 — 214,920 GNMA commercial mortgage-related securities 360,570 11,691 — 372,261 Total investment securities held to maturity $ 2,077,287 $ 132,271 $ (53) $ 2,209,505 The amortized cost and fair values of securities available for sale and held to maturity at December 31, 2019 were as follows: ($ in Thousands) Amortized Gross Gross Fair Value Investment securities available for sale Obligations of state and political subdivisions (municipal securities) $ 529,908 $ 16,269 $ (18) $ 546,160 Residential mortgage-related securities FNMA / FHLMC 131,158 1,562 (59) 132,660 GNMA 982,941 3,887 (1,689) 985,139 Commercial mortgage-related securities FNMA / FHLMC 19,929 1,799 — 21,728 GNMA 1,314,836 7,403 (12,032) 1,310,207 FFELP asset backed securities 270,178 — (6,485) 263,693 Other debt securities 3,000 — — 3,000 Total investment securities available for sale $ 3,251,950 $ 30,920 $ (20,284) $ 3,262,586 Investment securities held to maturity U. S. Treasury securities $ 999 $ 19 $ — $ 1,018 Obligations of state and political subdivisions (municipal securities) 1,418,569 69,775 (1,118) 1,487,227 Residential mortgage-related securities FNMA / FHLMC 81,676 1,759 (15) 83,420 GNMA 269,523 1,882 (1,108) 270,296 GNMA commercial mortgage-related securities 434,317 6,308 (6,122) 434,503 Total investment securities held to maturity $ 2,205,083 $ 79,744 $ (8,363) $ 2,276,465
Investment securities held to maturity	The amortized cost and fair values of securities available for sale and held to maturity at June 30, 2020 were as follows: ($ in Thousands) Amortized Gross Gross Fair Value Investment securities available for sale U. S. Treasury securities $ 26,646 $ 88 $ — $ 26,735 Agency securities 24,982 25 — 25,007 Obligations of state and political subdivisions (municipal securities) 471,346 24,542 — 495,888 Residential mortgage-related securities FNMA / FHLMC 813,458 4,652 — 818,110 GNMA 592,338 13,222 — 605,561 Commercial mortgage-related securities FNMA / FHLMC 19,793 2,269 — 22,061 GNMA 782,577 20,786 — 803,362 Asset backed securities FFELP 356,532 — (16,058) 340,474 SBA 9,619 — (44) 9,575 Other debt securities 3,000 — — 3,000 Total investment securities available for sale $ 3,100,291 $ 65,584 $ (16,102) $ 3,149,773 Investment securities held to maturity U. S. Treasury securities $ 999 $ 36 $ — $ 1,036 Obligations of state and political subdivisions (municipal securities) 1,435,938 110,132 (53) 1,546,018 Residential mortgage-related securities FNMA / FHLMC 71,872 3,400 — 75,271 GNMA 207,908 7,012 — 214,920 GNMA commercial mortgage-related securities 360,570 11,691 — 372,261 Total investment securities held to maturity $ 2,077,287 $ 132,271 $ (53) $ 2,209,505 The amortized cost and fair values of securities available for sale and held to maturity at December 31, 2019 were as follows: ($ in Thousands) Amortized Gross Gross Fair Value Investment securities available for sale Obligations of state and political subdivisions (municipal securities) $ 529,908 $ 16,269 $ (18) $ 546,160 Residential mortgage-related securities FNMA / FHLMC 131,158 1,562 (59) 132,660 GNMA 982,941 3,887 (1,689) 985,139 Commercial mortgage-related securities FNMA / FHLMC 19,929 1,799 — 21,728 GNMA 1,314,836 7,403 (12,032) 1,310,207 FFELP asset backed securities 270,178 — (6,485) 263,693 Other debt securities 3,000 — — 3,000 Total investment securities available for sale $ 3,251,950 $ 30,920 $ (20,284) $ 3,262,586 Investment securities held to maturity U. S. Treasury securities $ 999 $ 19 $ — $ 1,018 Obligations of state and political subdivisions (municipal securities) 1,418,569 69,775 (1,118) 1,487,227 Residential mortgage-related securities FNMA / FHLMC 81,676 1,759 (15) 83,420 GNMA 269,523 1,882 (1,108) 270,296 GNMA commercial mortgage-related securities 434,317 6,308 (6,122) 434,503 Total investment securities held to maturity $ 2,205,083 $ 79,744 $ (8,363) $ 2,276,465
Amortized cost and fair values of investment securities by contractual maturity	The expected maturities of investment securities available for sale and held to maturity at June 30, 2020 are shown below: Available for Sale Held to Maturity ($ in Thousands) Amortized Fair Amortized Fair Due in one year or less $ 9,427 $ 9,458 $ 33,745 $ 33,927 Due after one year through five years 83,136 83,882 67,917 69,887 Due after five years through ten years 343,084 360,051 166,553 175,189 Due after ten years 90,327 97,240 1,168,722 1,268,050 Total debt securities 525,975 550,630 1,436,937 1,547,053 Residential mortgage-related securities FNMA / FHLMC 813,458 818,110 71,872 75,271 GNMA 592,338 605,561 207,908 214,920 Commercial mortgage-related securities FNMA / FHLMC 19,793 22,061 — — GNMA 782,577 803,362 360,570 372,261 Asset backed securities FFELP 356,532 340,474 — — SBA 9,619 9,575 — — Total investment securities $ 3,100,291 $ 3,149,773 $ 2,077,287 $ 2,209,505 Ratio of fair value to amortized cost 101.6 % 106.4 %
Debt Securities, Held-to-maturity, Credit Quality Indicator	The following table summarizes the credit quality indicators of held to maturity securities at amortized cost at June 30, 2020: ($ in Thousands) AAA AA A Total U. S. Treasury securities $ 999 $ — $ — $ 999 Obligations of state and political subdivisions (municipal securities) 561,670 853,910 20,358 1,435,938 Residential mortgage-related securities FNMA/FHLMC 71,872 — — 71,872 GNMA 207,908 — — 207,908 GNMA commercial mortgage-related securities 360,570 — — 360,570 Total held to maturity securities $ 1,203,018 $ 853,910 $ 20,358 $ 2,077,287
Realized gains and losses and proceeds from sale	The proceeds from the sale of investment securities for the three and six months ended June 30, 2020 and 2019 are shown below: Three Months Ended June 30, Six Months Ended June 30, ($ in Thousands) 2020 2019 2020 2019 Gross gains on available for sale securities $ 3,106 $ 654 $ 9,304 $ 2,334 Gross gains on held to maturity securities — — — — Total gains 3,106 654 9,304 2,334 Gross (losses) on available for sale securities (11) (13,636) (90) (13,636) Gross (losses) on held to maturity securities — — — — Total (losses) (11) (13,636) (90) (13,636) Write-up of equity securities without readily determinable fair values — 13,444 — 13,444 Investment securities gains (losses), net $ 3,096 $ 463 $ 9,214 $ 2,143 Proceeds from sales of investment securities $ 261,037 $ 803,105 $ 626,276 $ 934,228
Unrealized losses and fair value of available for sale and held to maturity securities, by investment category and time length	The following represents gross unrealized losses and the related fair value of investment securities available for sale and held to maturity, aggregated by investment category and length of time individual securities have been in a continuous unrealized loss position, at June 30, 2020: Less than 12 months 12 months or more Total ($ in Thousands) Number Unrealized Fair Number Unrealized Fair Unrealized Fair Investment securities available for sale Obligations of state and political subdivisions (municipal securities) 1 $ — $ 548 — $ — $ — $ — $ 548 FNMA / FHLMC residential mortgage-related securities 5 — 54,893 — — — — 54,893 Asset backed securities FFELP 9 (5,478) 147,310 17 (10,580) 193,164 (16,058) 340,474 SBA 15 (44) 9,422 — — — (44) 9,422 Total 30 $ (5,522) $ 212,172 17 $ (10,580) $ 193,164 $ (16,102) $ 405,336 Investment securities held to maturity Obligations of state and political subdivisions (municipal securities) 8 $ (52) $ 12,431 2 $ (1) $ 365 $ (53) $ 12,796 Total 8 $ (52) $ 12,431 2 $ (1) $ 365 $ (53) $ 12,796 For comparative purposes, the following represents gross unrealized losses and the related fair value of investment securities available for sale and held to maturity, aggregated by investment category and length of time that individual securities have been in a continuous unrealized loss position, at December 31, 2019: Less than 12 months 12 months or more Total ($ in Thousands) Number Unrealized Fair Number Unrealized Fair Unrealized Fair Investment securities available for sale Obligations of state and political subdivisions (municipal securities) 4 $ (18) $ 1,225 — $ — $ — $ (18) $ 1,225 Residential mortgage-related securities FNMA / FHLMC — — — 4 (59) 34,807 (59) 34,807 GNMA 18 (924) 322,394 3 (766) 79,461 (1,689) 401,856 GNMA commercial mortgage-related securities 22 (810) 258,218 42 (11,222) 621,307 (12,032) 879,524 FFELP asset backed securities 19 (6,092) 250,780 2 (393) 12,913 (6,485) 263,693 Other debt securities 2 — 2,000 — — — — 2,000 Total 65 $ (7,843) $ 834,616 51 $ (12,440) $ 748,487 $ (20,284) $ 1,583,104 Investment securities held to maturity Obligations of state and political subdivisions (municipal securities) 52 $ (1,105) $ 77,562 6 $ (13) $ 2,378 $ (1,118) $ 79,940 Residential mortgage-related securities FNMA / FHLMC 1 (6) 1,242 1 (9) 833 (15) 2,075 GNMA 12 (1,059) 187,261 8 (49) 6,587 (1,108) 193,849 GNMA commercial mortgage-related securities 2 (29) 26,202 21 (6,093) 357,733 (6,122) 383,935 Total 67 $ (2,199) $ 292,267 36 $ (6,164) $ 367,532 $ (8,363) $ 659,799

Loans Loans (Tables)

Loans Loans (Tables)	6 Months Ended
	Jun. 30, 2020
Receivables [Abstract]
Loan composition	The period end loan composition was as follows: ($ in Thousands) June 30, 2020 December 31, 2019 PPP $ 1,012,033 $ — Commercial and industrial 7,968,709 7,354,594 Commercial real estate — owner occupied 914,385 911,265 Commercial and business lending 9,895,127 8,265,858 Commercial real estate — investor 4,174,125 3,794,517 Real estate construction 1,708,189 1,420,900 Commercial real estate lending 5,882,314 5,215,417 Total commercial 15,777,441 13,481,275 Residential mortgage 7,933,518 8,136,980 Home equity 795,671 852,025 Other consumer 326,040 351,159 Total consumer 9,055,230 9,340,164 Total loans $ 24,832,671 $ 22,821,440
Commercial and consumer loans by credit quality indicator	The following table presents commercial and consumer loans by credit quality indicator by vintage year at June 30, 2020: Term Loans Amortized Cost Basis by Origination Year (a) ($ in Thousands) Rev Loans Converted to Term (a) Rev Loans Amortized Cost Basis YTD 2020 2019 2018 2017 2016 Prior Total PPP: (b) Risk rating: Pass $ — $ — $ 985,462 $ — $ — $ — $ — $ — $ 985,462 Special Mention — — 7,409 — — — — — 7,409 Potential Problem — — 19,161 — — — — — 19,161 Paycheck Protection Program $ — $ — $ 1,012,033 $ — $ — $ — $ — $ — $ 1,012,033 Commercial and industrial: Risk rating: Pass $ 20 $ 1,832,797 $ 929,266 $ 1,759,308 $ 1,650,024 $ 597,967 $ 361,006 $ 531,995 $ 7,662,364 Special Mention — 12,802 379 23,783 7,299 15 5,541 17 49,836 Potential Problem (c) 517 12,963 17,235 16,544 66,699 52,176 8,492 2,162 176,270 Nonaccrual (d) 14,465 — 1,597 7,140 188 24,550 16,624 30,141 80,239 Commercial and industrial $ 15,003 $ 1,858,562 $ 948,477 $ 1,806,776 $ 1,724,210 $ 674,708 $ 391,662 $ 564,314 $ 7,968,709 Commercial real estate - owner occupied: Risk rating: Pass $ 1,150 $ 17,897 $ 94,106 $ 213,234 $ 131,748 $ 121,963 $ 166,366 $ 111,790 $ 857,103 Special Mention — — 2,450 16,317 12,776 128 2,439 5,321 39,432 Potential Problem — 77 661 1,409 1,923 2,461 6,106 3,281 15,919 Nonaccrual — — — — 223 335 — 1,374 1,932 Commercial real estate - owner occupied $ 1,150 $ 17,973 $ 97,217 $ 230,960 $ 146,670 $ 124,887 $ 174,911 $ 121,768 $ 914,385 Commercial and business lending: Risk rating: Pass $ 1,170 $ 1,850,694 $ 2,008,834 $ 1,972,542 $ 1,781,772 $ 719,930 $ 527,371 $ 643,786 $ 9,504,929 Special Mention — 12,802 10,239 40,100 20,075 143 7,979 5,338 96,677 Potential Problem (c) 517 13,040 37,058 17,953 68,622 54,637 14,598 5,443 211,350 Nonaccrual (d) 14,465 — 1,597 7,140 411 24,884 16,624 31,515 82,171 Commercial and business lending $ 16,153 $ 1,876,535 $ 2,057,727 $ 2,037,736 $ 1,870,880 $ 799,595 $ 566,572 $ 686,082 $ 9,895,127 Commercial real estate - investor: Risk rating: Pass $ — $ 176,047 $ 847,031 $ 1,083,145 $ 836,244 $ 378,098 $ 400,279 $ 288,644 $ 4,009,488 Special Mention — — 12,886 4,869 17,098 3,686 17,180 9,509 65,228 Potential Problem — 803 14,703 52,762 3,313 314 1,796 14,547 88,237 Nonaccrual 446 — 395 10,256 446 — — 75 11,172 Commercial real estate - investor $ 446 $ 176,850 $ 875,014 $ 1,151,033 $ 857,101 $ 382,098 $ 419,255 $ 312,775 $ 4,174,125 Real estate construction: Risk rating: Pass $ — $ 67,584 $ 279,683 $ 810,738 $ 434,146 $ 69,790 $ 3,095 $ 22,066 $ 1,687,100 Special Mention — — — — 18,402 — — 12 18,414 Potential Problem — — — 211 358 1,557 — 45 2,170 Nonaccrual — — — — — — — 503 503 Real estate construction $ — $ 67,584 $ 279,683 $ 810,949 $ 452,906 $ 71,346 $ 3,095 $ 22,627 $ 1,708,189 Commercial real estate lending: Risk rating: Pass $ — $ 243,630 $ 1,126,713 $ 1,893,883 $ 1,270,390 $ 447,888 $ 403,374 $ 310,710 $ 5,696,589 Special Mention — — 12,886 4,869 35,500 3,686 17,180 9,522 83,643 Potential Problem — 803 14,703 52,973 3,670 1,870 1,796 14,592 90,407 Nonaccrual 446 — 395 10,256 446 — — 578 11,675 Commercial real estate lending $ 446 $ 244,433 $ 1,154,696 $ 1,961,982 $ 1,310,007 $ 453,444 $ 422,349 $ 335,402 $ 5,882,314 Term Loans Amortized Cost Basis by Origination Year (a) ($ in Thousands) Rev Loans Converted to Term (a) Rev Loans Amortized Cost Basis YTD 2020 2019 2018 2017 2016 Prior Total Total commercial: Risk rating: Pass $ 1,170 $ 2,094,324 $ 3,135,547 $ 3,866,425 $ 3,052,162 $ 1,167,818 $ 930,746 $ 954,496 $ 15,201,517 Special Mention — 12,802 23,125 44,969 55,576 3,829 25,159 14,860 180,320 Potential Problem 517 13,843 51,760 70,927 72,292 56,507 16,393 20,035 301,758 Nonaccrual 14,911 — 1,992 17,397 857 24,884 16,624 32,093 93,846 Total commercial $ 16,599 $ 2,120,969 $ 3,212,424 $ 3,999,718 $ 3,180,887 $ 1,253,039 $ 988,922 $ 1,021,484 $ 15,777,441 Residential mortgage: Risk rating: Pass $ — $ 90 $ 943,953 $ 1,726,616 $ 766,921 $ 1,274,176 $ 1,160,820 $ 1,990,617 $ 7,863,194 Special Mention — — — — 270 — 36 206 511 Potential Problem — — 780 707 205 212 226 1,028 3,157 Nonaccrual — — 1,758 3,659 6,953 8,434 10,798 35,055 66,656 Residential mortgage $ — $ 90 $ 946,490 $ 1,730,982 $ 774,348 $ 1,282,822 $ 1,171,880 $ 2,026,905 $ 7,933,518 Home equity: Risk rating: Pass $ 2,005 $ 631,366 $ 1,746 $ 16,439 $ 21,034 $ 15,073 $ 7,510 $ 88,904 $ 782,073 Special Mention 233 199 — — 16 24 — 610 849 Potential Problem — 1,775 — — — — — 146 1,921 Nonaccrual 586 673 297 124 491 387 233 8,623 10,829 Home equity $ 2,824 $ 634,013 $ 2,044 $ 16,564 $ 21,541 $ 15,484 $ 7,743 $ 98,282 $ 795,671 Other consumer: Risk rating: Pass $ 15 $ 168,601 $ 4,497 $ 14,764 $ 5,581 $ 2,811 $ 2,015 $ 126,920 $ 325,190 Special Mention 1 530 — 30 6 — — 7 574 Nonaccrual 7 84 10 53 22 — 78 30 276 Other consumer $ 22 $ 169,215 $ 4,507 $ 14,847 $ 5,610 $ 2,811 $ 2,094 $ 126,957 $ 326,040 Total consumer: Risk rating: Pass $ 2,020 $ 800,057 $ 950,196 $ 1,757,820 $ 793,537 $ 1,292,060 $ 1,170,346 $ 2,206,441 $ 8,970,456 Special Mention 234 729 — 30 292 24 36 823 1,934 Potential Problem — 1,775 780 707 205 212 226 1,174 5,078 Nonaccrual 593 757 2,065 3,836 7,466 8,821 11,110 43,707 77,761 Total consumer $ 2,846 $ 803,318 $ 953,041 $ 1,762,393 $ 801,499 $ 1,301,117 $ 1,181,717 $ 2,252,145 $ 9,055,230 Total loans: Risk rating: Pass $ 3,190 $ 2,894,381 $ 4,085,744 $ 5,624,245 $ 3,845,698 $ 2,459,878 $ 2,101,091 $ 3,160,936 $ 24,171,974 Special Mention 234 13,531 23,125 44,999 55,868 3,854 25,195 15,683 182,254 Potential Problem 517 15,618 52,540 71,634 72,497 56,719 16,619 21,209 306,836 Nonaccrual 15,504 757 4,056 21,232 8,323 33,705 27,733 75,800 171,607 Total loans $ 19,445 $ 2,924,286 $ 4,165,465 $ 5,762,111 $ 3,982,386 $ 2,554,155 $ 2,170,639 $ 3,273,628 $ 24,832,671 (a) Revolving loans converted to term loans are also reported in their year of origination (b) The Corporation’s policy is to assign risk ratings at the borrower level. PPP loans are 100% guaranteed by the SBA and therefore the Corporation considers these loans to have a risk profile similar to pass rated loans. (c) Includes $63 million of oil and gas related loans (d) Includes $50 million of oil and gas related loans The following table presents commercial and consumer loans by credit quality indicator at December 31, 2019 : ($ in Thousands) Pass Special Mention Potential Problem Nonaccrual Total Commercial and industrial $ 7,118,448 $ 79,525 $ 110,308 $ 46,312 $ 7,354,594 Commercial real estate - owner occupied 866,193 25,115 19,889 67 911,265 Commercial and business lending 7,984,641 104,641 130,197 46,380 8,265,858 Commercial real estate - investor 3,620,785 139,873 29,449 4,409 3,794,517 Real estate construction 1,420,374 33 — 493 1,420,900 Commercial real estate lending 5,041,159 139,906 29,449 4,902 5,215,417 Total commercial 13,025,800 244,547 159,646 51,282 13,481,275 Residential mortgage 8,077,122 563 1,451 57,844 8,136,980 Home equity 841,757 1,164 — 9,104 852,025 Other consumer 350,260 748 — 152 351,159 Total consumer 9,269,139 2,475 1,451 67,099 9,340,164 Total loans $ 22,294,939 $ 247,022 $ 161,097 $ 118,380 $ 22,821,440
Summarized details of Loans	The following table presents loans by past due status at June 30, 2020: Accruing ($ in Thousands) Current (a) 30-59 Days 60-89 Days 90 Days or Nonaccrual (b)(c) Total PPP $ 1,012,033 $ — $ — $ — $ — $ 1,012,033 Commercial and industrial 7,887,369 274 442 385 80,239 7,968,709 Commercial real estate - owner occupied 912,254 199 — — 1,932 914,385 Commercial and business lending 9,811,656 473 442 385 82,171 9,895,127 Commercial real estate - investor 4,149,079 2,886 10,989 — 11,172 4,174,125 Real estate construction 1,707,300 373 12 — 503 1,708,189 Commercial real estate lending 5,856,379 3,259 11,001 — 11,675 5,882,314 Total commercial 15,668,035 3,732 11,443 385 93,846 15,777,441 Residential mortgage 7,863,839 2,789 233 — 66,656 7,933,518 Home equity 781,735 2,259 849 — 10,829 795,671 Other consumer 323,201 883 599 1,081 276 326,040 Total consumer 8,968,775 5,932 1,681 1,081 77,761 9,055,230 Total loans $ 24,636,810 $ 9,664 $ 13,125 $ 1,466 $ 171,607 $ 24,832,671 (a) Any deferred loans related to COVID-19 are considered current in accordance with Section 4013 of the CARES Act. (b) Of the total nonaccrual loans, $117 million, or 68%, were current with respect to payment at June 30, 2020. (c) No interest income was recognized on nonaccrual loans for both the three and six months ended June 30, 2020. In addition, there were $91 million of nonaccrual loans for which there was no related ACLL at June 30, 2020. The following table presents loans by past due status at December 31, 2019: Accruing ($ in Thousands) Current 30-59 Days 60-89 Days 90 Days or Nonaccrual (a) Total Commercial and industrial $ 7,307,118 $ 576 $ 245 $ 342 $ 46,312 $ 7,354,594 Commercial real estate - owner occupied 909,828 1,369 — — 67 911,265 Commercial and business lending 8,216,947 1,945 245 342 46,380 8,265,858 Commercial real estate - investor 3,788,296 1,812 — — 4,409 3,794,517 Real estate construction 1,420,310 64 33 — 493 1,420,900 Commercial real estate lending 5,208,606 1,876 33 — 4,902 5,215,417 Total commercial 13,425,552 3,821 278 342 51,282 13,481,275 Residential mortgage 8,069,863 8,749 525 — 57,844 8,136,980 Home equity 837,274 4,483 1,164 — 9,104 852,025 Other consumer 347,007 1,135 949 1,917 152 351,159 Total consumer 9,254,144 14,366 2,638 1,917 67,099 9,340,164 Total loans $ 22,679,696 $ 18,188 $ 2,916 $ 2,259 $ 118,380 $ 22,821,440 (a) Of the total nonaccrual loans, $48 million, or 41%, were current with respect to payment at December 31, 2019.
Summarized details of impaired Loans	The following table presents impaired loans individually evaluated under ASC Topic 310, excluding $2 million of purchased credit-impaired loans, at December 31, 2019 : ($ in Thousands) Recorded Unpaid Related Average Interest Loans with a related allowance Commercial and industrial $ 47,249 $ 63,346 $ 12,010 $ 45,290 $ 1,832 Commercial real estate — owner occupied 1,676 1,682 19 1,774 88 Commercial and business lending 48,924 65,028 12,029 47,064 1,919 Commercial real estate — investor 928 2,104 15 950 15 Real estate construction 477 559 67 494 30 Commercial real estate lending 1,405 2,663 82 1,445 45 Total commercial 50,329 67,691 12,111 48,509 1,965 Residential mortgage 21,450 22,625 2,740 23,721 856 Home equity 3,076 3,468 1,190 3,756 191 Other consumer 1,247 1,249 125 1,250 1 Total consumer 25,773 27,342 4,055 28,726 1,047 Total loans with a related allowance $ 76,102 $ 95,033 $ 16,165 $ 77,235 $ 3,012 Loans with no related allowance Commercial and industrial $ 14,787 $ 33,438 $ — $ 20,502 $ 63 Commercial real estate — owner occupied — — — — — Commercial and business lending 14,787 33,438 — 20,502 63 Commercial real estate — investor 3,705 3,705 — 3,980 159 Real estate construction — — — — — Commercial real estate lending 3,705 3,705 — 3,980 159 Total commercial 18,491 37,142 — 24,482 222 Residential mortgage 14,104 14,461 — 10,962 373 Home equity 1,346 1,383 — 1,017 21 Other consumer — — — — — Total consumer 15,450 15,845 — 11,979 394 Total loans with no related allowance $ 33,941 $ 52,987 $ — $ 36,462 $ 616 Total Commercial and industrial $ 62,035 $ 96,784 $ 12,010 $ 65,792 $ 1,895 Commercial real estate — owner occupied 1,676 1,682 19 1,774 88 Commercial and business lending 63,711 98,466 12,029 67,566 1,982 Commercial real estate — investor 4,633 5,808 15 4,931 174 Real estate construction 477 559 67 494 30 Commercial real estate lending 5,110 6,367 82 5,425 204 Total commercial 68,820 104,833 12,111 72,991 2,186 Residential mortgage 35,554 37,087 2,740 34,683 1,229 Home equity 4,422 4,851 1,190 4,773 211 Other consumer 1,247 1,249 125 1,250 1 Total consumer 41,223 43,187 4,055 40,706 1,441 Total loans (a) $ 110,043 $ 148,020 $ 16,165 $ 113,697 $ 3,628
Nonaccrual and performing restructured loans	The following table presents nonaccrual and performing restructured loans by loan portfolio: June 30, 2020 December 31, 2019 ($ in Thousands) Performing Nonaccrual Restructured Loans (a) Performing Nonaccrual Restructured Loans (a) PPP $ — $ — $ — $ — Commercial and industrial 16,321 7,968 16,678 7,376 Commercial real estate — owner occupied 1,441 — 1,676 — Commercial real estate — investor 114 395 293 — Real estate construction 313 173 298 179 Residential mortgage 4,178 15,401 3,955 13,035 Home equity 1,717 1,424 1,896 1,904 Other consumer 1,219 — 1,246 1 Total restructured loans (b) $ 25,303 $ 25,362 $ 26,041 $ 22,494 (a) Nonaccrual restructured loans have been included within nonaccrual loans. (b) Does not include any restructured loans related to COVID-19 in accordance with Section 4013 of the CARES Act.
Summary of restructured loans	The following table provides the number of loans modified in a TDR by loan portfolio, the recorded investment and unpaid principal balance for the six months ended June 30, 2020 and 2019: Six Months Ended June 30, 2020 Six Months Ended June 30, 2019 ($ in Thousands) Number Recorded Investment (a) Unpaid Principal Balance (b) Number Recorded Investment (a) Unpaid Principal Balance (b) PPP — $ — $ — — $ — $ — Commercial and industrial 2 1,112 1,140 1 196 196 Commercial real estate — owner occupied 1 288 319 — — — Commercial real estate — investor 1 395 1,705 — — — Real estate construction 1 102 102 — — — Residential mortgage 24 5,163 5,237 38 5,665 5,682 Home equity 15 471 483 18 499 506 Other consumer — — — 1 10 10 Total loans modified 44 $ 7,531 $ 8,986 58 $ 6,370 $ 6,394 (a) Represents post-modification outstanding recorded investment. (b) Represents pre-modification outstanding recorded investment.
Troubled debt restructurings subsequent redefault	The following table provides the number of loans modified in a TDR during the previous twelve months which subsequently defaulted during the six months ended June 30, 2020 and 2019 and the recorded investment in these restructured loans as of June 30, 2020 and 2019: Six Months Ended June 30, 2020 Six Months Ended June 30, 2019 ($ in Thousands) Number of Recorded Number of Recorded Residential mortgage 5 $ 1,036 16 $ 2,813 Home equity 4 208 14 477 Total loans modified 9 $ 1,244 30 $ 3,290
Changes in the allowance for loan losses by portfolio segment	The following table presents a summary of the changes in the ACLL by portfolio segment for the six months ended June 30, 2020: ($ in Thousands) Dec. 31, 2019 Cumulative effect of ASU 2016-13 adoption (CECL) Jan. 1, 2020 Charge offs Recoveries Net Charge offs Gross up of allowance for PCD loans at acquisition Provision recorded at acquisition Provision for loan losses June 30, 2020 ACLL / Loans Allowance for loan losses PPP $ — $ — $ — $ — $ — $ — $ — $ — $ 808 $ 808 Commercial and industrial 91,133 52,919 144,052 (42,183) 2,215 (39,968) 293 408 70,767 175,553 Commercial real estate — owner occupied 10,284 (1,851) 8,433 — 1 1 890 255 736 10,315 Commercial and business lending 101,417 51,068 152,485 (42,183) 2,216 (39,967) 1,183 663 72,311 186,676 Commercial real estate — investor 40,514 2,041 42,555 (140) 168 28 753 472 14,713 58,520 Real estate construction 24,915 7,467 32,382 (19) 27 8 435 492 5,076 38,393 Commercial real estate lending 65,428 9,508 74,937 (159) 195 36 1,188 964 19,789 96,913 Total commercial 166,846 60,576 227,422 (42,342) 2,412 (39,931) 2,371 1,627 92,101 283,590 Residential mortgage 16,960 33,215 50,175 (1,301) 174 (1,127) 651 403 (6,276) 43,825 Home equity 10,926 11,649 22,575 (1,213) 981 (232) 422 374 (1,677) 21,462 Other consumer 6,639 7,016 13,655 (2,802) 562 (2,240) 61 140 3,309 14,926 Total consumer 34,525 51,880 86,405 (5,316) 1,717 (3,599) 1,134 917 (4,644) 80,213 Total loans $ 201,371 $ 112,457 $ 313,828 $ (47,659) $ 4,129 $ (43,530) $ 3,504 $ 2,543 $ 87,457 $ 363,803 Allowance for unfunded commitments PPP $ — $ — $ — $ — $ — $ — $ — $ — $ — $ — Commercial and industrial 12,276 (3,998) 8,278 — — — — 61 11,261 19,601 Commercial real estate — owner occupied 127 — 127 — — — — 4 93 224 Commercial and business lending 12,403 (3,998) 8,405 — — — — 65 11,354 19,824 Commercial real estate — investor 530 246 776 — — — — 2 (227) 550 Real estate construction 7,532 18,347 25,879 — — — — 45 11,956 37,880 Commercial real estate lending 8,062 18,593 26,655 — — — — 47 11,729 38,430 Total commercial 20,465 14,595 35,060 — — — — 112 23,084 58,256 Home equity 1,038 2,591 3,629 — — — — 66 152 3,846 Other consumer 405 1,504 1,909 — — — — — 766 2,675 Total consumer 1,443 4,095 5,538 — — — — 66 917 6,522 Total loans $ 21,907 $ 18,690 $ 40,597 $ — $ — $ — $ — $ 179 $ 24,000 $ 64,776 Allowance for credit losses on loans PPP $ — $ — $ — $ — $ — $ — $ — $ — $ 808 $ 808 0.08 % Commercial and industrial 103,409 48,921 152,330 (42,183) 2,215 (39,968) 293 469 82,028 195,155 2.45 % Commercial real estate — owner occupied 10,411 (1,851) 8,560 — 1 1 890 259 829 10,538 1.15 % Commercial and business lending 113,820 47,070 160,890 (42,183) 2,216 (39,967) 1,183 728 83,666 206,501 2.09 % Commercial real estate — investor 41,044 2,287 43,331 (140) 168 28 753 474 14,486 59,070 1.42 % Real estate construction 32,447 25,814 58,261 (19) 27 8 435 537 17,032 76,273 4.47 % Commercial real estate lending 73,490 28,101 101,591 (159) 195 36 1,188 1,011 31,518 135,343 2.30 % Total commercial 187,311 75,171 262,482 (42,342) 2,412 (39,931) 2,371 1,739 115,184 341,844 2.17 % Residential mortgage 16,960 33,215 50,175 (1,301) 174 (1,127) 651 403 (6,277) 43,826 0.55 % Home equity 11,964 14,240 26,204 (1,213) 981 (232) 422 440 (1,526) 25,308 3.18 % Other consumer 7,044 8,520 15,564 (2,802) 562 (2,240) 61 140 4,076 17,601 5.40 % Total consumer 35,968 55,975 91,943 (5,316) 1,717 (3,599) 1,134 983 (3,727) 86,735 0.96 % Total loans $ 223,278 $ 131,147 $ 354,425 $ (47,659) $ 4,129 $ (43,530) $ 3,504 $ 2,722 $ 111,457 $ 428,579 1.73 % The following table presents details of the allowance for loan losses segregated by loan portfolio segment as of December 31, 2019, calculated in accordance with prior incurred loss methodology applicable under ASC Topic 310: ($ in Thousands) December 31, 2018 Charge offs Recoveries Net Charge offs Provision for loan losses December 31, 2019 Allowance for loan losses Commercial and industrial $ 108,835 $ (63,315) $ 11,875 $ (51,441) $ 33,738 $ 91,133 Commercial real estate — owner occupied 9,255 (222) 2,795 2,573 (1,543) 10,284 Commercial and business lending 118,090 (63,537) 14,670 (48,868) 32,195 101,417 Commercial real estate — investor 40,844 — 31 31 (361) 40,514 Real estate construction 28,240 (60) 302 243 (3,568) 24,915 Commercial real estate lending 69,084 (60) 333 274 (3,929) 65,429 Total commercial 187,174 (63,597) 15,003 (48,594) 28,266 166,846 Residential mortgage 25,595 (3,322) 692 (2,630) (6,005) 16,960 Home equity 19,266 (1,846) 2,599 753 (9,093) 10,926 Other consumer 5,988 (5,548) 868 (4,681) 5,332 6,639 Total consumer 50,849 (10,716) 4,159 (6,558) (9,766) 34,525 Total loans $ 238,023 $ (74,313) $ 19,161 $ (55,152) $ 18,500 $ 201,371 A summary of the individually and collectively evaluated loans by portfolio segment at December 31, 2019, was as follows: Allowance for loan losses Loans ($ in Thousands) Individually evaluated for impairment Collectively evaluated for impairment Total allowance for loan losses Individually evaluated for impairment Collectively evaluated for impairment Acquired and accounted for under ASC 310-30 (a) Total loans Commercial and industrial $ 12,010 $ 79,123 $ 91,133 $ 62,035 $ 7,292,217 $ 342 $ 7,354,594 Commercial real estate — owner occupied 19 10,265 10,284 1,676 909,010 579 911,265 Commercial and business lending 12,029 89,388 101,417 63,711 8,201,227 921 8,265,858 Commercial real estate — investor 15 40,498 40,514 4,633 3,789,755 129 3,794,517 Real estate construction 67 24,848 24,915 477 1,420,416 7 1,420,900 Commercial real estate lending 82 65,346 65,429 5,110 5,210,171 136 5,215,417 Total commercial 12,111 154,734 166,846 68,821 13,411,398 1,057 13,481,275 Residential mortgage 2,740 14,220 16,960 35,554 8,100,958 469 8,136,980 Home equity 1,190 9,737 10,926 4,422 847,577 26 852,025 Other consumer 125 6,514 6,639 1,247 349,912 — 351,159 Total consumer 4,055 30,471 34,525 41,223 9,298,447 495 9,340,164 Total loans $ 16,165 $ 185,205 $ 201,371 $ 110,043 $ 22,709,845 $ 1,552 $ 22,821,440 (a) Loans acquired in business combinations and accounted for under ASC Subtopic 310-30 "Receivables — Loans and Debt Securities Acquired with Deteriorated Credit Quality."
Changes in the allowance for unfunded commitments	The following table presents a summary of the changes in the allowance for unfunded commitments: ($ in Thousands) Six Months Ended June 30, 2020 Year Ended December 31, 2019 Allowance for Unfunded Commitments Balance at beginning of period $ 21,907 $ 24,336 Cumulative effect of ASU 2016-13 adoption (CECL) 18,690 N/A Balance at beginning of period, adjusted 40,597 24,336 Provision for unfunded commitments 24,000 (2,500) Amount recorded at acquisition 179 70 Balance at end of period $ 64,776 $ 21,907

Goodwill and Other Intangible_2

Goodwill and Other Intangible Assets (Tables)	6 Months Ended
	Jun. 30, 2020
Goodwill and Intangible Assets Disclosure [Abstract]
Summary of core deposit intangibles and other intangibles	For CDIs and other intangibles, changes in the gross carrying amount, accumulated amortization, and net book value were as follows: ($ in Thousands) Six Months Ended June 30, 2020 Year Ended December 31, 2019 Core deposit intangibles Gross carrying amount at the beginning of the year $ 80,730 $ 58,100 Additions during the period 7,379 22,630 Accumulated amortization (16,800) (12,456) Net book value $ 71,309 $ 68,274 Amortization during the year $ 4,344 $ 7,130 Other intangibles Gross carrying amount at the beginning of the year $ 38,970 $ 44,887 Additions during the period 200 — Reductions due to sale (17,435) (217) Accumulated amortization (20,285) (24,643) Net book value $ 1,450 $ 20,027 Amortization during the year $ 1,343 $ 2,818
Summary of changes in balance of mortgage servicing rights asset and mortgage servicing rights valuation allowance	A summary of changes in the balance of the MSRs asset and the MSRs valuation allowance is as follows: ($ in Thousands) Six Months Ended June 30, 2020 Year Ended December 31, 2019 Mortgage servicing rights Mortgage servicing rights at beginning of period $ 67,607 $ 68,433 Additions from acquisition 1,357 — Additions 7,812 11,606 Amortization (10,043) (12,432) Mortgage servicing rights at end of period $ 66,734 $ 67,607 Valuation allowance at beginning of period $ (302) $ (239) (Additions) recoveries, net (17,029) (63) Valuation allowance at end of period $ (17,331) $ (302) Mortgage servicing rights, net $ 49,403 $ 67,306 Fair value of mortgage servicing rights $ 49,423 $ 72,532 Portfolio of residential mortgage loans serviced for others (“servicing portfolio”) $ 8,454,204 $ 8,488,969 Mortgage servicing rights, net to servicing portfolio 0.58 % 0.79 % Mortgage servicing rights expense (a) $ 27,072 $ 12,494
Summary of estimated future amortization expense	The following table shows the estimated future amortization expense for amortizing intangible assets: ($ in Thousands) Core Deposit Intangibles Other Intangibles Mortgage Servicing Rights Six Months Ending December 31, 2020 $ 4,405 $ 100 $ 7,676 2021 8,811 200 14,970 2022 8,811 200 10,982 2023 8,811 200 8,269 2024 8,811 200 6,409 2025 8,811 200 5,082 Beyond 2025 22,849 350 13,346 Total Estimated Amortization Expense $ 71,309 $ 1,450 $ 66,734

Short and Long-Term Funding (Ta

Short and Long-Term Funding (Tables)	6 Months Ended
	Jun. 30, 2020
Debt Disclosure [Abstract]
Breakdown of short & long-term debt balances	The following table presents the components of short-term funding (funding with original contractual maturities of one year or less), long-term funding (funding with original contractual maturities greater than one year), and FHLB advances (funding based on original contractual maturities): ($ in Thousands) June 30, 2020 December 31, 2019 Short-Term Funding Federal funds purchased $ 3,430 $ 362,000 Securities sold under agreements to repurchase 138,863 71,097 Federal funds purchased and securities sold under agreements to repurchase 142,293 433,097 Commercial paper 39,535 32,016 Total short-term funding $ 181,828 $ 465,113 Long-Term Funding Bank senior notes, at par, due 2021 $ 300,000 $ 300,000 Corporation subordinated notes, at par, due 2025 250,000 250,000 PPPLF 1,009,760 — Finance leases 1,202 2,209 Capitalized costs (2,265) (2,866) Total long-term funding 1,558,698 549,343 Total short and long-term funding, excluding FHLB advances $ 1,740,525 $ 1,014,456 FHLB Advances Short-term FHLB advances $ — $ 520,000 Long-term FHLB advances 2,657,016 2,660,967 Total FHLB advances $ 2,657,016 $ 3,180,967 Total short and long-term funding $ 4,397,542 $ 4,195,422
Remaining contractual maturity of securities sold under agreements to repurchase	The remaining contractual maturity of the securities sold under agreements to repurchase on the consolidated balance sheets as of June 30, 2020 and December 31, 2019 are presented in the following table: Remaining Contractual Maturity of the Agreements ($ in Thousands) Overnight and Continuous Up to 30 days 30-90 days Greater than 90 days Total June 30, 2020 Repurchase agreements Agency mortgage-related securities $ 138,863 $ — $ — $ — $ 138,863 Total $ 138,863 $ — $ — $ — $ 138,863 December 31, 2019 Repurchase agreements Agency mortgage-related securities $ 71,097 $ — $ — $ — $ 71,097 Total $ 71,097 $ — $ — $ — $ 71,097

Derivative and Hedging Activi_2

Derivative and Hedging Activities (Tables)	6 Months Ended
	Jun. 30, 2020
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Summary Of Other derivative instruments not designated as hedging instruments	The following table presents the total notional amounts and gross fair values of the Company’s derivatives, as well as the balance sheet netting adjustments as of June 30, 2020 and December 31, 2019. The derivative assets and liabilities are presented on a gross basis prior to the application of bilateral collateral and master netting agreements, but after the variation margin payments with central clearing organizations have been applied as settlement, as applicable. Total derivative assets and liabilities are adjusted to take into consideration the effects of legally enforceable master netting agreements and cash collateral received or paid as of June 30, 2020 and December 31, 2019. The resulting net derivative asset and liability fair values are included in other assets and accrued expenses and other liabilities, respectively, on the consolidated balance sheets. June 30, 2020 December 31, 2019 Asset Liability Asset Liability ($ in Thousands) Notional Amount Fair Value Notional Amount Fair Value Notional Amount Fair Value Notional Amount Fair Value Not designated as hedging instruments Interest rate-related instruments $ 3,564,015 $ 238,003 $ 3,564,015 $ 31,472 $ 3,029,877 $ 77,024 $ 3,029,877 $ 13,073 Foreign currency exchange forwards 337,015 4,200 290,557 4,102 272,636 4,226 264,653 4,048 Commodity contracts 163,307 38,543 158,756 36,998 255,089 20,528 255,165 19,624 Mortgage banking (a) 299,330 12,837 393,184 1,293 255,291 2,527 263,000 710 Gross derivatives before netting $ 293,583 $ 73,865 $ 104,305 $ 37,455 Less: Legally enforceable master netting agreements 1,586 1,586 10,410 10,410 Less: Cash collateral pledged/received 36,234 32,285 1,408 11,365 Total derivative instruments, after netting $ 255,763 $ 39,994 $ 92,487 $ 15,680 (a) Mortgage derivative assets include interest rate lock commitments and mortgage derivative liabilities include forward commitments.
Schedule of cash flow hedging instruments, statements of financial performance and financial position location	The table below identifies the effect of fair value hedge accounting on the Corporation's consolidated statements of income for the three and six months ended June 30, 2020 and 2019: Location and Amount of Gain or (Loss) Recognized in Income on Three Months Ended June 30, Six Months Ended June 30, 2020 2019 2020 2019 ($ in Thousands) Interest Income Other Income (Expense) Interest Income Other Income (Expense) Interest Income Other Income (Expense) Interest Income Other Income (Expense) Total amounts of income and expense line items presented on the consolidated statements of income in which the effects of the fair value hedge is recorded $ (542) $ — $ 53 $ — $ (864) $ (262) $ 219 $ — The effects of fair value hedging: Gain or (loss) on fair value hedging relationships in Subtopic 815-20 Interest contracts Hedged items (542) — 4,165 — (864) (262) 6,222 — Derivatives designated as hedging instruments (a) — — (4,112) — — — (6,003) — (a) Includes net settlements on the derivatives.
Gain (loss) on derivative instruments not designated as hedging instruments	The table below identifies the effect of derivatives not designated as hedging instruments on the Corporation's consolidated statements of income for the three and six months ended June 30, 2020 and 2019: Consolidated Statements of Income Category of Three Months Ended June 30, Six Months Ended June 30, ($ in Thousands) 2020 2019 2020 2019 Derivative Instruments Interest rate-related instruments — customer and mirror, net Capital markets, net $ (65) $ (1,018) $ (3,155) $ (1,690) Foreign currency exchange forwards Capital markets, net 41 186 (81) 212 Commodity contracts Capital markets, net (105) (1,678) 641 (2,245) Interest rate lock commitments (mortgage) Mortgage banking, net 382 1,837 10,310 2,661 Forward commitments (mortgage) Mortgage banking, net 9,679 (78) (582) 169

Balance Sheet Offsetting (Table

Balance Sheet Offsetting (Tables)	6 Months Ended
	Jun. 30, 2020
Offsetting [Abstract]
Balance sheet offsetting of derivative assets and liabilities	The following table presents the interest rate, commodity, and foreign exchange assets and liabilities subject to an enforceable master netting arrangement. The interest, commodity and foreign exchange agreements the Corporation has with its commercial customers are not subject to an enforceable master netting arrangement and are therefore excluded from this table: Gross Amounts Recognized Gross Amounts Subject to Master Netting Arrangements Offset on the Consolidated Balance Sheets Net Amounts Presented on the Consolidated Balance Sheets Investment Securities Received ($ in Thousands) Derivative Cash Collateral Received Net amount Derivative assets June 30, 2020 $ 38,569 $ (1,586) $ (36,234) $ 749 $ — $ 749 December 31, 2019 11,864 (10,410) (1,408) 45 — 45 Gross Amounts Recognized Gross Amounts Subject to Master Netting Arrangements Offset on the Consolidated Balance Sheets Net Amounts Presented on the Consolidated Balance Sheets Investment Securities Pledged ($ in Thousands) Derivative Liabilities Offset Cash Collateral Pledged Net amount Derivative liabilities June 30, 2020 $ 34,434 $ (1,586) $ (32,285) $ 564 $ — $ 564 December 31, 2019 22,189 (10,410) (11,365) 413 — 413

Commitments, Off-Balance Shee_2

Commitments, Off-Balance Sheet Arrangements, Legal Proceedings and Regulatory Matters (Tables)	6 Months Ended
	Jun. 30, 2020
Commitments and Contingencies Disclosure [Abstract]
Summary of lending-related and other commitments	The following is a summary of lending-related commitments: ($ in Thousands) June 30, 2020 December 31, 2019 Commitments to extend credit, excluding commitments to originate residential mortgage loans held for sale (a)(b) $ 9,580,338 $ 9,024,412 Commercial letters of credit (a) 6,123 7,081 Standby letters of credit (c) 265,223 277,969 (a) These off-balance sheet financial instruments are exercisable at the market rate prevailing at the date the underlying transaction will be completed and, thus, are deemed to have no current fair value, or the fair value is based on fees currently charged to enter into similar agreements and was not material at June 30, 2020 or December 31, 2019. (b) Interest rate lock commitments to originate residential mortgage loans held for sale are considered derivative instruments and are disclosed in Note 10. (c) The Corporation has established a liability of $3 million for both June 30, 2020 and December 31, 2019, as an estimate of the fair value of these financial instruments.
Schedule Of Unfunded Commitments [Table Text Block]	The following table presents a summary of the changes in the allowance for unfunded commitments: ($ in Thousands) Six Months Ended June 30, 2020 Year Ended December 31, 2019 Allowance for Unfunded Commitments Balance at beginning of period $ 21,907 $ 24,336 Cumulative effect of ASU 2016-13 adoption (CECL) 18,690 N/A Balance at beginning of period, adjusted 40,597 24,336 Provision for unfunded commitments 24,000 (2,500) Amount recorded at acquisition 179 70 Balance at end of period $ 64,776 $ 21,907

Fair Value Measurements (Tables

Fair Value Measurements (Tables)	6 Months Ended
	Jun. 30, 2020
Fair Value Disclosures [Abstract]
Assets and liabilities measured on recurring basis at fair value	The table below presents the Corporation’s financial instruments measured at fair value on a recurring basis as of June 30, 2020 and December 31, 2019, aggregated by the level in the fair value hierarchy within which those measurements fall: ($ in Thousands) Fair Value Hierarchy June 30, 2020 December 31, 2019 Assets Investment securities available for sale U.S. Treasury securities Level 1 $ 26,735 $ — Agency securities Level 2 25,007 — Obligations of state and political subdivisions (municipal securities) Level 2 495,888 546,160 Residential mortgage-related securities FNMA / FHLMC Level 2 818,110 132,660 GNMA Level 2 605,561 985,139 Commercial mortgage-related securities FNMA / FHLMC Level 2 22,061 21,728 GNMA Level 2 803,362 1,310,207 Asset backed securities FFELP Level 2 340,474 263,693 SBA Level 2 9,575 — Other debt securities Level 2 3,000 3,000 Total investment securities available for sale Level 1 $ 26,735 $ — Total investment securities available for sale Level 2 3,123,039 3,262,586 Equity securities with readily determinable fair values Level 1 1,647 1,646 Residential loans held for sale Level 2 196,673 136,280 Interest rate-related instruments (a) Level 2 238,003 77,024 Foreign currency exchange forwards (a) Level 2 4,200 4,226 Commodity contracts (a) Level 2 38,543 20,528 Interest rate lock commitments to originate residential mortgage loans held for sale Level 3 12,837 2,527 Liabilities Interest rate-related instruments (a) Level 2 $ 31,472 $ 13,073 Foreign currency exchange forwards (a) Level 2 4,102 4,048 Commodity contracts (a) Level 2 36,998 19,624 Forward commitments to sell residential mortgage loans Level 3 1,293 710
Assets and liabilities measured at fair value using significant unobservable inputs (level 3)	The table below presents a rollforward of the consolidated balance sheets amounts for the six months ended June 30, 2020 and the year ended December 31, 2019, for the Corporation's mortgage derivatives measured on a recurring basis and classified within Level 3 of the fair value hierarchy: ($ in Thousands) Interest rate lock commitments to originate residential mortgage loans held for sale Forward commitments to sell residential mortgage loans Total Balance December 31, 2018 $ 2,208 $ 2,072 $ 140 New production 24,164 (2,367) 26,531 Closed loans / settlements (29,375) (5,968) (23,407) Other 5,530 6,973 (1,443) Mortgage derivative gain (loss) 319 (1,362) 1,681 Balance December 31, 2019 $ 2,527 $ 710 $ 1,817 New production $ 44,349 $ (439) $ 44,788 Closed loans / settlements (37,505) (12,197) (25,308) Other 3,467 13,218 (9,752) Mortgage derivative gain (loss) 10,310 582 9,727 Balance June 30, 2020 $ 12,837 $ 1,293 $ 11,544
Equity securities without readily determinable fair value	The following table presents the carrying value of equity securities without readily determinable fair values still held as of June 30, 2020 that are measured under the measurement alternative and the related adjustments recorded during the periods presented for those securities with observable price changes. These securities are included in the nonrecurring fair value tables when applicable price changes are observable. Also shown are the cumulative upward and downward adjustments for the Corporation's equity securities without readily determinable fair values as of June 30, 2020: ($ in Thousands) Equity securities without readily determinable fair values Carrying value as of December 31, 2019 $ 13,444 Carrying value changes — Carrying value as of June 30, 2020 $ 13,444 Cumulative upward carrying value changes between January 1, 2018 and June 30, 2020 $ 13,444 Cumulative downward carrying value changes/impairment between January 1, 2018 and June 30, 2020 $ —
Assets and liabilities measured on nonrecurring basis at fair value	The table below presents the Corporation’s assets measured at fair value on a nonrecurring basis, aggregated by the level in the fair value hierarchy within which those measurements fall: Consolidated Statements of Income Adjustment Recognized on the Consolidated Statements of Income ($ in Thousands) Fair Value Hierarchy Fair Value June 30, 2020 Assets Individually evaluated loans (a) Level 3 $ 88,416 Provision for credit losses $ (58,523) OREO (b) Level 2 6,611 Other noninterest expense (2,273) Mortgage servicing rights Level 3 49,423 Mortgage banking, net (17,029) December 31, 2019 Assets Impaired loans (c) Level 3 $ 45,792 Provision for credit losses (d) $ (66,172) OREO (b) Level 2 3,565 Other noninterest expense (1,860) Mortgage servicing rights Level 3 72,532 Mortgage banking, net (63) Equity securities Level 3 13,444 Investment securities gains (losses), net 13,444 (a) Includes probable TDRs which are individually analyzed, net of the related allowance for loan losses. (b) If the fair value of the collateral exceeds the carrying amount of the asset, no charge off or adjustment is necessary, the asset is not considered to be carried at fair value, and is therefore not included in the table. (c) Represents individually evaluated impaired loans, net of the related allowance for loan losses. (d) Represents provision for credit losses on individually evaluated impaired loans.
Schedule of assumptions for fair value as of balance sheet date of assets or liabilities that relate to transferor's continuing involvement	The table below presents information about these inputs and further discussion is found above: June 30, 2020 Valuation Technique Significant Unobservable Input Range of Inputs Weighted Average Input Applied Mortgage servicing rights Discounted cash flow Discount rate 9% - 14% 9% Mortgage servicing rights Discounted cash flow Constant prepayment rate 12% - 35% 18% Individually evaluated loans Appraisals / Discounted cash flow Collateral / Discount factor 0% - 68% 66%
Estimated fair values of financial instruments	Fair value estimates are set forth below for the Corporation’s financial instruments: June 30, 2020 December 31, 2019 ($ in Thousands) Fair Value Hierarchy Level Carrying Amount Fair Value Carrying Amount Fair Value Financial assets Cash and due from banks Level 1 $ 443,500 $ 443,500 $ 373,380 $ 373,380 Interest-bearing deposits in other financial institutions Level 1 1,569,006 1,569,006 207,624 207,624 Federal funds sold and securities purchased under agreements to resell Level 1 185 185 7,740 7,740 Investment securities held to maturity, net Level 1 999 1,036 999 1,018 Investment securities held to maturity, net Level 2 2,076,226 2,208,408 2,204,084 2,275,447 Investment securities available for sale Level 1 26,735 26,735 — — Investment securities available for sale Level 2 3,123,039 3,123,039 3,262,586 3,262,586 Equity securities with readily determinable fair values Level 1 1,647 1,647 1,646 1,646 Equity securities without readily determinable fair values Level 3 13,444 13,444 13,444 13,444 FHLB and Federal Reserve Bank stocks Level 2 206,281 206,281 227,347 227,347 Residential loans held for sale Level 2 196,673 196,673 136,280 136,280 Commercial loans held for sale Level 2 3,565 3,565 15,000 15,000 Loans, net Level 3 24,468,868 24,390,225 22,620,068 22,399,621 Bank and corporate owned life insurance Level 2 676,196 676,196 671,948 671,948 Derivatives (other assets) (a) Level 2 280,746 280,746 101,778 101,778 Interest rate lock commitments to originate residential mortgage loans held for sale (other assets) Level 3 12,837 12,837 2,527 2,527 Financial liabilities Noninterest-bearing demand, savings, interest-bearing demand, and money market accounts Level 3 $ 24,302,540 $ 24,302,540 $ 21,156,261 $ 21,156,261 Brokered CDs and other time deposits (b) Level 2 2,248,904 2,267,551 2,622,803 2,622,803 Short-term funding (c) Level 2 181,828 181,828 465,113 465,113 Long-term funding (excluding PPPLF) Level 2 548,937 576,667 549,343 572,873 PPPLF Level 2 1,009,760 1,009,926 — — FHLB advances Level 2 2,657,016 2,851,632 3,180,967 3,207,793 Standby letters of credit (d) Level 2 2,644 2,644 2,710 2,710 Derivatives (accrued expenses and other liabilities) (a) Level 2 72,572 72,572 36,745 36,745 Forward commitments to sell residential mortgage loans (accrued expenses and other liabilities) Level 3 1,293 1,293 710 710 (a) Figures are presented gross before netting. See Note 10 and Note 11 for information relating to the impact of offsetting derivative assets and liabilities and cash collateral with the same counterparty where there is a legally enforceable master netting agreement in place. (b) When the estimated fair value is less than the carrying value, the carrying value is reported as the fair value. (c) The carrying amount is a reasonable estimate of fair value for existing short-term funding. (d) The commitment on standby letters of credit was $265 million at June 30, 2020 and $278 million at December 31, 2019. See Note 12 for additional information on the standby letters of credit and for information on the fair value of lending-related commitments.

Retirement Plans (Tables)

Retirement Plans (Tables)	6 Months Ended
	Jun. 30, 2020
Retirement Benefits [Abstract]
Net period benefit cost for the pension and postretirement plans	The components of net periodic pension cost and net periodic benefit cost for the RAP and Postretirement Plan for the three and six months ended June 30, 2020 and 2019 were as follows: Three Months Ended June 30, Six Months Ended June 30, ($ in Thousands) 2020 2019 2020 2019 Components of Net Periodic Benefit Cost RAP Service cost $ 2,165 $ 1,925 $ 4,330 $ 3,850 Interest cost 2,008 2,413 4,015 4,825 Expected return on plan assets (6,405) (6,075) (12,810) (12,150) Amortization of prior service cost (19) (19) (38) (38) Amortization of actuarial loss (gain) 803 65 1,610 130 Total net periodic pension cost $ (1,449) $ (1,691) $ (2,893) $ (3,383) Postretirement Plan Interest cost $ 20 $ 26 $ 39 $ 52 Amortization of prior service cost (19) (19) (38) (38) Amortization of actuarial loss (gain) — (1) — (2) Total net periodic benefit cost $ 1 $ 6 $ 2 $ 13

Segment Reporting (Tables)

Segment Reporting (Tables)	6 Months Ended
	Jun. 30, 2020
Segment Reporting [Abstract]
Selected segment information	Information about the Corporation’s segments is presented below: Corporate and Commercial Specialty Three Months Ended June 30, Six Months Ended June 30, ($ in Thousands) 2020 2019 2020 2019 Net interest income $ 98,824 $ 114,232 $ 206,577 $ 228,162 Net intersegment interest income (expense) 6,889 (13,326) (3,856) (28,881) Segment net interest income 105,713 100,906 202,721 199,281 Noninterest income 30,691 31,267 65,124 58,414 Total revenue 136,405 132,174 267,845 257,695 Credit provision 13,713 12,585 25,885 25,169 Noninterest expense 50,837 56,450 102,098 111,383 Income (loss) before income taxes 71,855 63,139 139,862 121,144 Income tax expense (benefit) 13,446 12,244 26,117 23,411 Net income $ 58,410 $ 50,895 $ 113,745 $ 97,732 Allocated goodwill $ 530,144 $ 530,106 Community, Consumer, and Business Three Months Ended June 30, Six Months Ended June 30, ($ in Thousands) 2020 2019 2020 2019 Net interest income $ 73,120 $ 77,013 $ 148,047 $ 156,699 Net intersegment interest income (expense) 14,340 22,804 33,025 43,551 Segment net interest income 87,459 99,817 181,072 200,250 Noninterest income 58,557 62,123 116,207 120,398 Total revenue 146,017 161,940 297,279 320,648 Credit provision 5,429 4,626 10,537 9,311 Noninterest expense 122,290 119,694 238,721 232,612 Income (loss) before income taxes 18,298 37,620 48,021 78,725 Income tax expense (benefit) 3,843 7,900 10,084 16,532 Net income $ 14,455 $ 29,720 $ 37,936 $ 62,193 Allocated goodwill $ 577,758 $ 645,913 Risk Management and Shared Services Three Months Ended June 30, Six Months Ended June 30, ($ in Thousands) 2020 2019 2020 2019 Net interest income $ 17,929 $ 22,375 $ 38,190 $ 44,306 Net intersegment interest income (expense) (21,229) (9,478) (29,169) (14,671) Segment net interest income (3,301) 12,896 9,021 29,635 Noninterest income (a) 165,242 2,447 171,465 8,228 Total revenue 161,941 15,343 180,486 37,863 Credit provision 41,858 (9,211) 77,579 (20,480) Noninterest expense (b) 10,280 21,634 34,779 45,456 Income (loss) before income taxes 109,802 2,919 68,129 12,887 Income tax expense (benefit) 33,950 (1,127) 25,255 1,466 Net income $ 75,853 $ 4,047 $ 42,874 $ 11,422 Allocated goodwill $ — $ — Consolidated Total Three Months Ended June 30, Six Months Ended June 30, ($ in Thousands) 2020 2019 2020 2019 Net interest income $ 189,872 $ 213,619 $ 392,814 $ 429,167 Net intersegment interest income (expense) — — — — Segment net interest income 189,872 213,619 392,814 429,167 Noninterest income (a) 254,490 95,837 352,796 187,040 Total revenue 444,362 309,457 745,610 616,206 Credit provision 61,000 8,000 114,001 14,000 Noninterest expense (b) 183,407 197,779 375,598 389,450 Income (loss) before income taxes 199,955 103,678 256,012 212,756 Income tax expense (benefit) 51,238 19,017 61,457 41,409 Net income $ 148,718 $ 84,661 $ 194,555 $ 171,347 Allocated goodwill $ 1,107,902 $ 1,176,019 (a) For the three and six months ended June 30, 2020, the Corporation recognized a $163 million asset gain related to the sale of ABRC. (b) For the three months ended both June 30, 2020 and 2019, the Risk Management and Shared Services segment included less than $1 million and approximately $4 million respectively, of acquisition related noninterest expense. For the six months ended June 30, 2020 and 2019, the Risk Management and Shared Services segment included approximately $2 million and $4 million respectively, of acquisition related noninterest expense.

Accumulated Other Comprehensi_2

Accumulated Other Comprehensive Income (Loss) (Tables)	6 Months Ended
	Jun. 30, 2020
Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]
Summary of activity in accumulated other comprehensive income (loss)	The following tables summarize the components of accumulated other comprehensive income (loss) at June 30, 2020 and 2019, including changes during the preceding three and six month periods as well as any reclassifications out of accumulated other comprehensive income (loss): ($ in Thousands) Investment Defined Benefit Accumulated Balance December 31, 2019 $ 3,989 $ (37,172) $ (33,183) Other comprehensive income (loss) before reclassifications 48,060 — 48,060 Amounts reclassified from accumulated other comprehensive income (loss) Investment securities losses (gains), net (9,214) — (9,214) Personnel expense — (75) (75) Other expense — 1,610 1,610 Interest income 1,332 — 1,332 Income tax (expense) benefit (10,066) (385) (10,450) Net other comprehensive income (loss) during period 30,112 1,150 31,263 Balance June 30, 2020 $ 34,101 $ (36,021) $ (1,920) Balance December 31, 2018 $ (75,643) $ (49,330) $ (124,972) Other comprehensive income (loss) before reclassifications 89,966 — 89,966 Amounts reclassified from accumulated other comprehensive income (loss) Investment securities losses (gains), net (2,143) — (2,143) Personnel expense — (75) (75) Other expense — 128 128 Interest income 288 — 288 Income tax (expense) benefit (22,242) (13) (22,255) Net other comprehensive income (loss) during period 65,869 40 65,909 Balance June 30, 2019 $ (9,773) $ (49,290) $ (59,063) ($ in Thousands) Investments Defined Benefit Accumulated Balance March 31, 2020 $ 19,620 $ (36,595) $ (16,974) Other comprehensive income (loss) before reclassifications 21,641 — 21,641 Amounts reclassified from accumulated other comprehensive income (loss) Investment securities losses (gains), net (3,096) — (3,096) Personnel expense — (38) (38) Other expense — 803 803 Interest income 776 — 776 Income tax (expense) benefit (4,841) (192) (5,032) Net other comprehensive income (loss) during period 14,481 573 15,054 Balance June 30, 2020 $ 34,101 $ (36,021) $ (1,920) Balance March 31, 2019 $ (54,065) $ (49,310) $ (103,375) Other comprehensive income (loss) before reclassifications 59,476 — 59,476 Amounts reclassified from accumulated other comprehensive income (loss) Investment securities loss (gain), net (463) — (463) Personnel expense — (38) (38) Other expense — 64 64 Interest income 218 — 218 Income tax (expense) benefit (14,940) (7) (14,947) Net other comprehensive income (loss) during period 44,292 20 44,311 Balance June 30, 2019 $ (9,773) $ (49,290) $ (59,063)

Revenue from Contracts with C_2

Revenue from Contracts with Customers (Tables)	6 Months Ended
	Jun. 30, 2020
Revenue Recognition [Abstract]
Disaggregation of revenue by Major source	The Corporation's disaggregated revenue by major source is presented below: Corporate and Commercial Specialty Three Months Ended June 30, Six Months Ended June 30, ($ in Thousands) 2020 2019 2020 2019 Insurance commissions and fees $ 47 $ 49 $ 123 $ 174 Wealth management fees (a) 15,814 15,369 31,621 30,469 Service charges and deposit account fees 4,307 3,309 7,859 6,806 Card-based fees (b) 228 455 743 889 Other revenue 294 865 1,081 1,049 Noninterest Income (in-scope of Topic 606) $ 20,690 $ 20,047 $ 41,426 $ 39,387 Noninterest Income (out-of-scope of Topic 606) 10,002 11,220 23,698 19,026 Total Noninterest Income $ 30,691 $ 31,267 $ 65,124 $ 58,414 Community, Consumer, and Business Three Months Ended June 30, Six Months Ended June 30, ($ in Thousands) 2020 2019 2020 2019 Insurance commissions and fees $ 22,381 $ 22,933 $ 44,910 $ 48,268 Wealth management fees (a) 5,102 5,321 10,111 10,402 Service charges and deposit account fees 7,173 12,104 18,838 23,703 Card-based fees (b) 8,647 9,674 17,693 18,486 Other revenue 2,861 2,349 5,147 4,621 Noninterest Income (in-scope of Topic 606) $ 46,163 $ 52,381 $ 96,698 $ 105,479 Noninterest Income (out-of-scope of Topic 606) 12,394 9,742 19,509 14,919 Total Noninterest Income $ 58,557 $ 62,123 $ 116,207 $ 120,398 Risk Management and Shared Services Three Months Ended June 30, Six Months Ended June 30, ($ in Thousands) 2020 2019 2020 2019 Insurance commissions and fees $ 3 $ 3 $ 6 $ 7 Service charges and deposit account fees 4 14 10 32 Card-based fees (b) 47 48 94 97 Other revenue 26 210 49 438 Noninterest Income (in-scope of Topic 606) $ 80 $ 275 $ 158 $ 574 Noninterest Income (out-of-scope of Topic 606) (c) 165,161 2,172 171,307 7,653 Total Noninterest Income $ 165,242 $ 2,447 $ 171,465 $ 8,228 Consolidated Total Three Months Ended June 30, Six Months Ended June 30, ($ in Thousands) 2020 2019 2020 2019 Insurance commissions and fees $ 22,430 $ 22,985 $ 45,038 $ 48,449 Wealth management fees (a) 20,916 20,691 41,732 40,870 Service charges and deposit account fees 11,484 15,426 26,706 30,542 Card-based fees (b) 8,922 10,177 18,529 19,472 Other revenue 3,181 3,424 6,277 6,108 Noninterest Income (in-scope of Topic 606) $ 66,933 $ 72,703 $ 138,282 $ 145,441 Noninterest Income (out-of-scope of Topic 606) (c) 187,557 23,134 214,515 41,599 Total Noninterest Income $ 254,490 $ 95,837 $ 352,796 $ 187,040 (a) Includes trust, asset management, brokerage, and annuity fees. (b) Certain card-based fees are out-of-scope of Topic 606. (c) Both the three and six months ended June 30, 2020 include a gain of $163 million from the sale of ABRC.
Revenue recognition 606	Below is a listing of performance obligations for the Corporation's main revenue streams: Revenue Stream Noninterest income in-scope of Topic 606 Insurance commissions and fees The Corporation's insurance revenue had two distinct performance obligations. The first performance obligation was the selling of the policy as an agent for the carrier. This performance obligation was satisfied upon binding of the policy. The second performance obligation was the ongoing servicing of the policy which was satisfied over the life of the policy. For employee benefits, the payment was typically received monthly. For property and casualty, payments can vary, but were typically received at, or in advance, of the policy period. Service charges and deposit account fees Service charges and deposit account fees consist of monthly service fees (i.e. business analyzed fees and consumer service charges) and other deposit account related fees. The Corporation's performance obligation for monthly service fees is generally satisfied, and the related revenue recognized, over the period in which the service is provided. Other deposit account related fees are largely transactional based, and therefore, the Corporation's performance obligation is satisfied, and related revenue recognized, at a point in time. Payment for service charges and deposit account fees are primarily received immediately or in the following month through a direct charge to customers’ accounts. Card-based fees (a) Card-based fees are primarily comprised of debit and credit card income, ATM fees, and merchant services income. Debit and credit card income is primarily comprised of interchange fees earned whenever the Corporation's debit and credit cards are processed through card payment networks. ATM and merchant fees are largely transactional based, and therefore, the Corporation's performance obligation is satisfied, and related revenue recognized, at a point in time. Payment is typically received immediately or in the following month. Trust and asset management fees (b) Trust and asset management income is primarily comprised of fees earned from the management and administration of trusts and other customer assets. The Corporation's performance obligation is generally satisfied over time and the resulting fees are recognized monthly, based upon the month-end market value of the assets under management and the applicable fee rate. Payment is generally received a few days after month end through a direct charge to the customers’ accounts. The Corporation's performance obligation for these transactional-based services is generally satisfied, and related revenue recognized, at a point in time (i.e., as incurred). Payment is received shortly after services are rendered. Brokerage commissions and fees (b) Brokerage commissions and fees primarily consist of investment advisory, brokerage, retirement services, and annuities. The Corporation's performance obligation for investment advisory services and retirement services is generally satisfied, and the related revenue recognized, over the period in which the services are provided. The performance obligation for annuities is satisfied upon sale of the annuity, and therefore, the related revenue is primarily recognized at the time of sale. Payments for these services are typically received immediately or in advance of the service. (a) Certain card-based fees are out-of-scope of Topic 606. (b) Trust and asset management fees and brokerage commissions and fees are included in wealth management fees.

Leases (Tables)

Leases (Tables)	6 Months Ended
	Jun. 30, 2020
Leases [Abstract]
Lease, Cost and Cash Flows	Operating and finance lease costs and cash flows resulting from these leases are presented below: ($ in Thousands) Three Months Ended June 30, Six Months Ended June 30, 2020 2019 2020 2019 Operating Lease Costs $ 2,631 $ 2,888 $ 5,254 $ 5,793 Finance Lease Costs 31 — 67 — Operating Lease Cash Flows 2,700 2,762 5,432 5,570 Finance Lease Cash Flows 21 — 42 —
Components of lease expense	The lease classifications on the consolidated balance sheets were as follows: ($ in Thousands) Consolidated Balance Sheets Category June 30, 2020 December 31, 2019 Amount Operating lease right-of-use asset Premises and equipment $ 39,674 $ 45,381 Finance lease right-of-use asset Other assets 1,154 2,188 Operating lease liability Accrued expenses and other liabilities 43,377 49,292 Finance lease liability Other long-term funding 1,202 2,209
Operating lease information	The lease payment obligations, weighted-average remaining lease term, and weighted-average discount rate were as follows: June 30, 2020 December 31, 2019 ($ in Thousands) Lease payments Weighted-average lease term (in years) Weighted-average discount rate Lease payments Weighted-average lease term (in years) Weighted-average discount rate Operating leases Equipment $ 5 0.69 2.72 % $ 46 0.83 2.72 % Retail and corporate offices 42,293 6.22 3.35 % 48,940 6.49 3.34 % Land 6,663 9.30 3.08 % 6,594 9.57 3.21 % Total operating leases $ 48,961 6.61 3.31 % $ 55,580 6.83 3.32 % Finance leases Land $ 1,225 2.14 1.05 % $ 4,827 39.67 3.99 % Total finance leases $ 1,225 2.14 1.05 % $ 4,827 39.67 3.99 %
Amortization of operating lease liabilities	Contractual lease payment obligations for each of the next five years and thereafter, in addition to a reconciliation to the Corporation’s lease liability, were as follows: ($ in Thousands) Operating Leases Finance Leases Amount Six Months Ending December 31, 2020 $ 3,065 $ 80 $ 3,145 2021 10,387 172 10,559 2022 8,066 973 9,039 2023 5,810 — 5,810 2024 5,108 — 5,108 Beyond 2024 16,526 — 16,526 Total lease payments $ 48,961 $ 1,225 $ 50,187 Less: interest 5,584 23 5,607 Present value of lease payments $ 43,377 $ 1,202 $ 44,579

Acquisitions Staunton Acquisiti

Acquisitions Staunton Acquisition (Details) - USD ($) $ in Thousands	Jun. 30, 2020	Feb. 14, 2020	Mar. 31, 2020	Jun. 30, 2019
February 14, 2020
Goodwill			$ 15,000
Fair value of liabilities assumed	$ 480,028			$ 725,719
First Staunton Bancshares [Member]
Purchase Accounting Adjustments
Cash and cash equivalents		$ 0
Investment securities available for sale		(24)
Federal Home Loan Bank and Federal Reserve Bank stocks, at cost		0
Loans		(4,808)
Premises and equipment, net		(3,005)
Bank owned life insurance		9
Core deposit intangibles (included in other intangible assets, net on the face of the consolidated balance sheets)		7,379
OREO (included in other assets on the face of the consolidated balance sheets)		670
Other assets		4,193
Deposits		1,285
Other borrowings		61
Accrued expenses and other liabilities		179
February 14, 2020
Cash and cash equivalents		44,782
Investment securities available for sale		98,743
Federal Home Loan Bank and Federal Reserve Bank stocks, at cost		781
Loans		369,741
Premises and equipment, net		4,865
Bank owned life insurance		6,770
Goodwill	$ 82,000	13,414	$ 15,000
Core deposit intangibles (included in other intangible assets, net on the face of the consolidated balance sheets)		7,379
OREO (included in other assets on the face of the consolidated balance sheets)		762
Other assets		9,090
Total assets		556,328
Deposits		438,684
Other borrowings		34,613
Accrued expenses and other liabilities		6,730
Fair value of liabilities assumed		480,028
Total consideration paid		$ 76,300

Acquisitions Huntington Acquisi

Acquisitions Huntington Acquisition (Details) - USD ($) $ in Thousands	Jun. 14, 2019	Mar. 31, 2020	Jun. 30, 2020	Jun. 30, 2019
June 14, 2019
Goodwill		$ 15,000
Fair value of liabilities assumed			$ 480,028	$ 725,719
Huntington National Bank
Purchase Accounting Adjustments
Cash and cash equivalents	$ 0
Loans	(1,552)
Premises and equipment, net	4,800
Core deposit intangibles (included in other intangible assets, net on the face of the consolidated balance sheets)	22,630
OREO (included in other assets on the face of the consolidated balance sheets)	(2,561)
Other assets	0
Deposits	156
Other liabilities	70
June 14, 2019
Cash and cash equivalents	551,250
Loans	116,346
Premises and equipment, net	22,430
Goodwill	7,286
Core deposit intangibles (included in other intangible assets, net on the face of the consolidated balance sheets)	22,630
OREO (included in other assets on the face of the consolidated balance sheets)	5,263
Other assets	559
Total assets	725,764
Deposits	725,173
Other liabilities	590
Fair value of liabilities assumed	$ 725,764

Acquisitions, PCD Loans (Detail

Acquisitions, PCD Loans (Details) $ in Thousands	Feb. 14, 2020USD ($)
Business Combinations [Abstract]
Purchase price of loans at acquisition	$ 77,221
Allowance for credit losses at acquisition	3,504
Non-credit discount/(premium) at acquisition	(951)
Par value of acquired loans at acquisition	$ 79,774

Acquisitions (Details Textuals)

Acquisitions (Details Textuals) $ in Thousands	Jun. 30, 2020USD ($)	Feb. 14, 2020USD ($)branch	Jun. 14, 2019USD ($)branch	Jun. 30, 2020USD ($)	Mar. 31, 2020USD ($)	Sep. 30, 2019USD ($)	Jun. 30, 2020USD ($)
Business Acquisition [Line Items]
Goodwill					$ 15,000
Huntington National Bank
Business Acquisition [Line Items]
Effective Date of Acquisition			Jun. 14, 2019
Business Acquisition, Name of Acquired Entity			Huntington
Business Combination, Control Obtained Description			The Corporation paid a 4% premium on acquired deposits
New Communities | branch			13
Acquired Net Branches | branch			14
Goodwill			$ 7,286
Goodwill, Other Increase (Decrease)						$ (210)
Amortization period			10 years
First Staunton Bancshares [Member]
Business Acquisition [Line Items]
Effective Date of Acquisition		Feb. 14, 2020
Business Acquisition, Name of Acquired Entity		First Staunton
Business Combination, Control Obtained Description		The Corporation paid a 4% premium on acquired deposits.
New Communities | branch		9
Acquired Net Branches | branch		7
Goodwill	$ 82,000	$ 13,414			$ 15,000
Goodwill, Other Increase (Decrease)				$ 2,000
PCD - HTM Securities		0
PCD - AFS Securities		$ 0
Amortization period		10 years
Total consideration paid		$ 76,300
ABRC
Business Acquisition [Line Items]
Total consideration paid							$ 266,000
Pre-tax book gain on sale							$ 163,000

Summary of Significant Accoun_4

Summary of Significant Accounting Policies, Credit Loss Adoption Impact (Details) - USD ($) $ in Thousands	Jun. 30, 2020	Jan. 01, 2020	Dec. 31, 2019
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Allowance for Loan Losses			$ 201,371
Allowance for Unfunded Commitments	$ 64,776		21,907
Total commercial
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Allowance for Loan Losses			166,846
Allowance for Unfunded Commitments			20,465
Total consumer
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Allowance for Loan Losses			34,525
Allowance for Unfunded Commitments			1,443
Commercial and industrial | Total commercial
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Allowance for Loan Losses			91,133
Allowance for Unfunded Commitments			12,276
Commercial real estate — owner occupied | Total commercial
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Allowance for Loan Losses			10,284
Allowance for Unfunded Commitments			127
Commercial and business lending | Total commercial
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Allowance for Loan Losses			101,417
Allowance for Unfunded Commitments			12,403
Commercial real estate — investor | Total commercial
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Allowance for Loan Losses			40,514
Allowance for Unfunded Commitments			530
Real Estate Construction | Total commercial
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Allowance for Loan Losses			24,915
Allowance for Unfunded Commitments			7,532
Commercial Real Estate | Total commercial
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Allowance for Loan Losses			65,428
Allowance for Unfunded Commitments			8,062
Residential mortgage | Total consumer
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Allowance for Loan Losses			16,960
Allowance for Unfunded Commitments			0
Home Equity Loan | Total consumer
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Allowance for Loan Losses			10,926
Allowance for Unfunded Commitments			1,038
Other consumer | Total consumer
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Allowance for Loan Losses			6,639
Allowance for Unfunded Commitments			$ 405
Cumulative Effect, Period Of Adoption, Adjustment
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Allowance for Loan Losses		$ 131,147
Cumulative Effect, Period Of Adoption, Adjustment | Total commercial
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Allowance for Loan Losses		75,171
Cumulative Effect, Period Of Adoption, Adjustment | Total consumer
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Allowance for Loan Losses		55,975
Cumulative Effect, Period Of Adoption, Adjustment | Commercial and industrial | Total commercial
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Allowance for Loan Losses		48,921
Cumulative Effect, Period Of Adoption, Adjustment | Commercial real estate — owner occupied | Total commercial
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Allowance for Loan Losses		(1,851)
Cumulative Effect, Period Of Adoption, Adjustment | Commercial and business lending | Total commercial
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Allowance for Loan Losses		47,070
Cumulative Effect, Period Of Adoption, Adjustment | Commercial real estate — investor | Total commercial
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Allowance for Loan Losses		2,287
Cumulative Effect, Period Of Adoption, Adjustment | Real Estate Construction | Total commercial
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Allowance for Loan Losses		25,814
Cumulative Effect, Period Of Adoption, Adjustment | Commercial Real Estate | Total commercial
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Allowance for Loan Losses		28,101
Cumulative Effect, Period Of Adoption, Adjustment | Residential mortgage | Total consumer
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Allowance for Loan Losses		33,215
Cumulative Effect, Period Of Adoption, Adjustment | Home Equity Loan | Total consumer
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Allowance for Loan Losses		14,240
Cumulative Effect, Period Of Adoption, Adjustment | Other consumer | Total consumer
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Allowance for Loan Losses		8,520
Cumulative Effect, Period Of Adoption, Adjusted Balance
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Allowance for Loan Losses		354,425
Allowance for Unfunded Commitments		40,597
Cumulative Effect, Period Of Adoption, Adjusted Balance | Total commercial
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Allowance for Loan Losses		262,482
Cumulative Effect, Period Of Adoption, Adjusted Balance | Total consumer
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Allowance for Loan Losses		91,943
Cumulative Effect, Period Of Adoption, Adjusted Balance | Commercial and industrial | Total commercial
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Allowance for Loan Losses		152,330
Cumulative Effect, Period Of Adoption, Adjusted Balance | Commercial real estate — owner occupied | Total commercial
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Allowance for Loan Losses		8,560
Cumulative Effect, Period Of Adoption, Adjusted Balance | Commercial and business lending | Total commercial
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Allowance for Loan Losses		160,890
Cumulative Effect, Period Of Adoption, Adjusted Balance | Commercial real estate — investor | Total commercial
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Allowance for Loan Losses		43,331
Cumulative Effect, Period Of Adoption, Adjusted Balance | Real Estate Construction | Total commercial
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Allowance for Loan Losses		58,261
Cumulative Effect, Period Of Adoption, Adjusted Balance | Commercial Real Estate | Total commercial
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Allowance for Loan Losses		101,591
Cumulative Effect, Period Of Adoption, Adjusted Balance | Residential mortgage | Total consumer
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Allowance for Loan Losses		50,175
Cumulative Effect, Period Of Adoption, Adjusted Balance | Home Equity Loan | Total consumer
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Allowance for Loan Losses		26,204
Cumulative Effect, Period Of Adoption, Adjusted Balance | Other consumer | Total consumer
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Allowance for Loan Losses		$ 15,564

Summary of Significant Accoun_5

Summary of Significant Accounting Policies Narrative (Details) - USD ($) $ in Thousands	3 Months Ended
	Dec. 31, 2020	Jun. 30, 2020	Jan. 01, 2020	Dec. 31, 2019
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Retained Earnings (Accumulated Deficit)		$ 2,412,859		$ 2,380,867
Held to maturity allowance for credit loss		61	$ 61
Allowance for Loan Losses				201,371
Cumulative Effect, Period Of Adoption, Adjustment
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Allowance for Loan Losses			131,147
Allowance for Loan Losses [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Allowance for Loan Losses		$ 363,803		$ 201,371
Accounting Standards Update 2016-13
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Retained Earnings (Accumulated Deficit)			98,000
Deferred Income Tax Assets, Net			33,000
Accounting Standards Update 2016-13 | Forecast
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Reasonable and Supportable Period 2016-13	2 years
Accounting Standards Update 2016-13 | Allowance for Loan Losses [Member] | Cumulative Effect, Period Of Adoption, Adjustment
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Allowance for Loan Losses			112,457
Accounting Standards Update 2016-13 | Allowance for Loans Losses and Unfunded Commitments [Member] | Cumulative Effect, Period Of Adoption, Adjustment
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Allowance for Loan Losses			$ 131,000

Earnings Per Common Share (Deta

Earnings Per Common Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended				6 Months Ended
	Jun. 30, 2020	Mar. 31, 2020	Jun. 30, 2019	Mar. 31, 2019	Jun. 30, 2020	Jun. 30, 2019
Calculations for basic and diluted earnings per common share
Net income	$ 148,718	$ 45,838	$ 84,661	$ 86,686	$ 194,555	$ 171,347
Preferred stock dividends	(4,144)		(3,801)		(7,945)	(7,601)
Net income available to common equity	144,573		80,860		186,611	163,746
Common shareholder dividends	(27,667)		(27,571)		(55,931)	(55,650)
Unvested share-based payment awards	(222)		(205)		(351)	(308)
Undistributed earnings	116,684		53,085		130,329	107,787
Undistributed earnings allocated to common shareholders	115,750		52,690		129,377	107,098
Undistributed earnings allocated to unvested share-based payment awards	934		395		953	689
Undistributed earnings	116,684		53,085		130,329	107,787
Basic
Distributed earnings to common shareholders	27,667		27,571		55,931	55,650
Undistributed earnings allocated to common shareholders	115,750		52,690		129,377	107,098
Total common shareholders earnings, basic	143,417		80,261		185,307	162,748
Diluted
Distributed earnings to common shareholders	27,667		27,571		55,931	55,650
Undistributed earnings allocated to common shareholders	115,750		52,690		129,377	107,098
Total common shareholders earnings, diluted	$ 143,417		$ 80,261		$ 185,307	$ 162,748
Weighted average common shares outstanding	152,393		162,180		153,547	163,049
Effect of dilutive common stock awards	757		1,492		813	1,469
Diluted weighted average common shares outstanding	153,150		163,672		154,360	164,518
Basic earnings per common share	$ 0.94		$ 0.49		$ 1.21	$ 1
Diluted earnings per common share	$ 0.94		$ 0.49		$ 1.20	$ 0.99

Earnings Per Common Share (De_2

Earnings Per Common Share (Details Textuals) - shares shares in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Approximate anti-dilutive stock options
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount	8	4	7	3

Stock-Based Compensation Fair V

Stock-Based Compensation Fair Value Assumptions of Stock Options (Details) - $ / shares	6 Months Ended	12 Months Ended
	Jun. 30, 2020	Dec. 31, 2019
Retirement Benefits [Abstract]
Dividend yield	3.50%	3.30%
Risk-free interest rate	1.60%	2.60%
Weighted average expected volatility	21.00%	24.00%
Weighted average expected life	5 years 9 months	5 years 9 months
Weighted average per share fair value of options	$ 2.39	$ 4

Stock-Based Compensation, Stock

Stock-Based Compensation, Stock Option Activity (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	6 Months Ended	12 Months Ended
	Jun. 30, 2020	Dec. 31, 2019
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]
Stock Options Shares Outstanding, Beginning balance (in shares)	5,543
Granted	1,697
Exercised	(110)
Forfeited or expired	(219)
Stock Options Shares Outstanding, Ending balance (in shares)	6,911	5,543
Options exercisable (in shares)	4,242
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price [Abstract]
Stock Option Outstanding, Weighted Average Exercise Price, Beginning balance (in usd per share)	$ 20.13
Granted	18.43
Exercised	13.95
Forfeited	22.30
Stock Option Outstanding, Weighted Average Exercise Price, Ending balance (in usd per share)	19.74	$ 20.13
Options Exercisable, Weighted Average Exercise Price (in usd per share)	$ 19.21
Stock Options Outstanding, Weighted Average Remaining Contractual Term	6 years 8 months 23 days	6 years 3 months
Options exercisable, Weighted Average Remaining Contractual Term	5 years 3 months 25 days
Stock Options Outstanding, Aggregate Intrinsic Value, Beginning balance	$ 16,043
Stock Options Outstanding, Aggregate Intrinsic Value, Ending balance	213	$ 16,043
Options exercisable, Aggregate Intrinsic Value	$ 213

Stock-Based Compensation, Restr

Stock-Based Compensation, Restricted Stock Activity (Details) shares in Thousands	6 Months Ended
	Jun. 30, 2020$ / sharesshares
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward]
Outstanding Shares, Beginning balance (in shares) | shares	2,393
Granted | shares	1,032
Vested | shares	(804)
Forfeited | shares	(72)
Outstanding Shares, Ending balance (in shares) | shares	2,550
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value [Abstract]
Outstanding, Weighted Average Grant Date Fair Value, Beginning balance (in usd per share) | $ / shares	$ 22.39
Granted, Weighted Average Grant Date Fair Value | $ / shares	18.38
Vested, Weighted Average Grant Date Fair Value | $ / shares	23.05
Forfeited, Weighted Average Grant Date Fair Value | $ / shares	22.64
Outstanding Weighted Average Grant Date Fair Value, Ending balance (in usd per share) | $ / shares	$ 20.56

Stock-Based Compensation (Detai

Stock-Based Compensation (Details Textuals) - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019
Share-based Compensation Arrangement by Share-based Payment Award
Intrinsic value of stock options exercised	$ 1	$ 3
Total fair value of vested stock options	$ 3	4
Minimum
Share-based Compensation Arrangement by Share-based Payment Award
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage	0.00%
Maximum
Share-based Compensation Arrangement by Share-based Payment Award
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage	150.00%
Employee Stock Option
Share-based Compensation Arrangement by Share-based Payment Award
Recognized compensation expense for vesting	$ 3	$ 3
Recognized compensation expense for accelerated vesting	1
Unvested share-based payment awards	$ 4
Remaining requisite service periods, extend through	first quarter of 2024
Performance-based Restricted Stock Award
Share-based Compensation Arrangement by Share-based Payment Award
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period	3 years	3 years
Service-based Restricted Stock Award
Share-based Compensation Arrangement by Share-based Payment Award
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period	4 years	4 years
Restricted Stock Award
Share-based Compensation Arrangement by Share-based Payment Award
Recognized compensation expense for vesting	$ 12	$ 13
Recognized compensation expense for accelerated vesting	5
Unvested share-based payment awards	$ 23
Remaining requisite service periods, extend through	first quarter of 2024

Investment Securities, AFS and

Investment Securities, AFS and HTM Securities Amortized Costs and Fair Values (Details) - USD ($) $ in Thousands	Jun. 30, 2020	Dec. 31, 2019
Investment securities available for sale
Amortized Cost	$ 3,100,291	$ 3,251,950
Gross Unrealized Gains	65,584	30,920
Gross Unrealized (Losses)	(16,102)	(20,284)
Fair Value	3,149,773	3,262,586
Investment securities held to maturity
Held to Maturity, Amortized Cost	2,077,287	2,205,083
Held-to-maturity, Gross Unrealized Gains	132,271	79,744
Held-to-maturity, Gross Unrealized Loss	(53)	(8,363)
Held-to-maturity, Fair Value	2,209,505	2,276,465
U. S. Treasury securities
Investment securities available for sale
Amortized Cost	26,646
Gross Unrealized Gains	88
Gross Unrealized (Losses)	0
Fair Value	26,735
Investment securities held to maturity
Held to Maturity, Amortized Cost	999	999
Held-to-maturity, Gross Unrealized Gains	36	19
Held-to-maturity, Gross Unrealized Loss	0	0
Held-to-maturity, Fair Value	1,036	1,018
Agency Securities
Investment securities available for sale
Amortized Cost	24,982
Gross Unrealized Gains	25
Gross Unrealized (Losses)	0
Fair Value	25,007
Obligations of state and political subdivisions (municipal securities)
Investment securities available for sale
Amortized Cost	471,346	529,908
Gross Unrealized Gains	24,542	16,269
Gross Unrealized (Losses)	0	(18)
Fair Value	495,888	546,160
Investment securities held to maturity
Held to Maturity, Amortized Cost	1,435,938	1,418,569
Held-to-maturity, Gross Unrealized Gains	110,132	69,775
Held-to-maturity, Gross Unrealized Loss	(53)	(1,118)
Held-to-maturity, Fair Value	1,546,018	1,487,227
FFELP
Investment securities available for sale
Amortized Cost	356,532	270,178
Gross Unrealized Gains	0	0
Gross Unrealized (Losses)	(16,058)	(6,485)
Fair Value	340,474	263,693
Investment securities held to maturity
Held to Maturity, Amortized Cost	0
Held-to-maturity, Fair Value	0
SBA
Investment securities available for sale
Amortized Cost	9,619
Gross Unrealized Gains	0
Gross Unrealized (Losses)	(44)
Fair Value	9,575
Investment securities held to maturity
Held to Maturity, Amortized Cost	0
Held-to-maturity, Fair Value	0
Other debt securities
Investment securities available for sale
Amortized Cost	3,000	3,000
Gross Unrealized Gains	0	0
Gross Unrealized (Losses)	0	0
Fair Value	3,000	3,000
FNMA / FHLMC | Residential mortgage-related securities
Investment securities available for sale
Amortized Cost	813,458	131,158
Gross Unrealized Gains	4,652	1,562
Gross Unrealized (Losses)	0	(59)
Fair Value	818,110	132,660
Investment securities held to maturity
Held to Maturity, Amortized Cost	71,872	81,676
Held-to-maturity, Gross Unrealized Gains	3,400	1,759
Held-to-maturity, Gross Unrealized Loss	0	(15)
Held-to-maturity, Fair Value	75,271	83,420
FNMA / FHLMC | Commercial mortgage-related securities
Investment securities available for sale
Amortized Cost	19,793	19,929
Gross Unrealized Gains	2,269	1,799
Gross Unrealized (Losses)	0	0
Fair Value	22,061	21,728
Investment securities held to maturity
Held to Maturity, Amortized Cost	0
Held-to-maturity, Fair Value	0
GNMA | Residential mortgage-related securities
Investment securities available for sale
Amortized Cost	592,338	982,941
Gross Unrealized Gains	13,222	3,887
Gross Unrealized (Losses)	0	(1,689)
Fair Value	605,561	985,139
Investment securities held to maturity
Held to Maturity, Amortized Cost	207,908	269,523
Held-to-maturity, Gross Unrealized Gains	7,012	1,882
Held-to-maturity, Gross Unrealized Loss	0	(1,108)
Held-to-maturity, Fair Value	214,920	270,296
GNMA | Commercial mortgage-related securities
Investment securities available for sale
Amortized Cost	782,577	1,314,836
Gross Unrealized Gains	20,786	7,403
Gross Unrealized (Losses)	0	(12,032)
Fair Value	803,362	1,310,207
Investment securities held to maturity
Held to Maturity, Amortized Cost	360,570	434,317
Held-to-maturity, Gross Unrealized Gains	11,691	6,308
Held-to-maturity, Gross Unrealized Loss	0	(6,122)
Held-to-maturity, Fair Value	$ 372,261	$ 434,503

Investment Securities, AFS an_2

Investment Securities, AFS and HTM Contractual Maturities (Details) - USD ($) $ in Thousands	Jun. 30, 2020	Dec. 31, 2019
Amortized Cost
Available for Sale, Due in one year or less	$ 9,427
Available for Sale, Due after one year through five years	83,136
Available for Sale, Due after five years through ten years	343,084
Available for Sale, Due after ten years	90,327
Available for Sale, Total debt securities	525,975
Available for Sale, amortized cost	3,100,291	$ 3,251,950
Fair Value
Available for Sale, Due in one year or less	9,458
Available for Sale, Due after one year through five years	83,882
Available for Sale, Due after five years through ten years	360,051
Available for Sale, Due after ten years	97,240
Available for Sale, Total debt securities	550,630
Investment securities available for sale, at fair value	$ 3,149,773	3,262,586
Available for Sale, Ratio of Fair Value to Amortized Cost	101.60%
Amortized Cost
Held to Maturity, Due in one year or less	$ 33,745
Held to Maturity, Due after one year through five years	67,917
Held to Maturity, Due after five years through ten years	166,553
Held to Maturity, Due after ten years	1,168,722
Held to Maturity, Total Debt Securities	1,436,937
Held to Maturity, Amortized Cost	2,077,287	2,205,083
Fair Value
Held to Maturity, Due in one year or less	33,927
Held to Maturity, Due after one year through five years	69,887
Held to Maturity, Due after five years through ten years	175,189
Held to Maturity, Due after ten years	1,268,050
Held to Maturity, Securities, Debt Securities	1,547,053
Held to Maturity, Total debt securities at fair value	$ 2,209,505	2,276,465
Held to Maturity, Ratio of Fair Value to Amortized Cost	106.40%
SBA
Amortized Cost
Available for Sale, amortized cost	$ 9,619
Fair Value
Investment securities available for sale, at fair value	9,575
Amortized Cost
Held to Maturity, Amortized Cost	0
Fair Value
Held to Maturity, Total debt securities at fair value	0
FFELP
Amortized Cost
Available for Sale, amortized cost	356,532	270,178
Fair Value
Investment securities available for sale, at fair value	340,474	263,693
Amortized Cost
Held to Maturity, Amortized Cost	0
Fair Value
Held to Maturity, Total debt securities at fair value	0
FNMA/FHLMC | Residential Related Securities
Amortized Cost
Available for Sale, amortized cost	813,458	131,158
Fair Value
Investment securities available for sale, at fair value	818,110	132,660
Amortized Cost
Held to Maturity, Amortized Cost	71,872	81,676
Fair Value
Held to Maturity, Total debt securities at fair value	75,271	83,420
FNMA/FHLMC | Commercial mortgage-related securities
Amortized Cost
Available for Sale, amortized cost	19,793	19,929
Fair Value
Investment securities available for sale, at fair value	22,061	21,728
Amortized Cost
Held to Maturity, Amortized Cost	0
Fair Value
Held to Maturity, Total debt securities at fair value	0
GNMA | Residential Related Securities
Amortized Cost
Available for Sale, amortized cost	592,338	982,941
Fair Value
Investment securities available for sale, at fair value	605,561	985,139
Amortized Cost
Held to Maturity, Amortized Cost	207,908	269,523
Fair Value
Held to Maturity, Total debt securities at fair value	214,920	270,296
GNMA | Commercial mortgage-related securities
Amortized Cost
Available for Sale, amortized cost	782,577	1,314,836
Fair Value
Investment securities available for sale, at fair value	803,362	1,310,207
Amortized Cost
Held to Maturity, Amortized Cost	360,570	434,317
Fair Value
Held to Maturity, Total debt securities at fair value	$ 372,261	$ 434,503

Investment Securities, HTM Cred

Investment Securities, HTM Credit Quality Indicators (Details) - USD ($) $ in Thousands	Jun. 30, 2020	Dec. 31, 2019
Schedule of Held-to-maturity Securities [Line Items]
Investment securities held to maturity, net	$ 2,077,287	$ 2,205,083
US Treasury Securities
Schedule of Held-to-maturity Securities [Line Items]
Investment securities held to maturity, net	999	999
Obligations of state and political subdivisions (municipal securities)
Schedule of Held-to-maturity Securities [Line Items]
Investment securities held to maturity, net	1,435,938	$ 1,418,569
FNMA/FHLMC
Schedule of Held-to-maturity Securities [Line Items]
Investment securities held to maturity, net	71,872
GNMA
Schedule of Held-to-maturity Securities [Line Items]
Investment securities held to maturity, net	207,908
GNMA commercial mortgage-related securities
Schedule of Held-to-maturity Securities [Line Items]
Investment securities held to maturity, net	360,570
AAA
Schedule of Held-to-maturity Securities [Line Items]
Investment securities held to maturity, net	1,203,018
AAA | US Treasury Securities
Schedule of Held-to-maturity Securities [Line Items]
Investment securities held to maturity, net	999
AAA | Obligations of state and political subdivisions (municipal securities)
Schedule of Held-to-maturity Securities [Line Items]
Investment securities held to maturity, net	561,670
AAA | FNMA/FHLMC
Schedule of Held-to-maturity Securities [Line Items]
Investment securities held to maturity, net	71,872
AAA | GNMA
Schedule of Held-to-maturity Securities [Line Items]
Investment securities held to maturity, net	207,908
AAA | GNMA commercial mortgage-related securities
Schedule of Held-to-maturity Securities [Line Items]
Investment securities held to maturity, net	360,570
AA
Schedule of Held-to-maturity Securities [Line Items]
Investment securities held to maturity, net	853,910
AA | US Treasury Securities
Schedule of Held-to-maturity Securities [Line Items]
Investment securities held to maturity, net	0
AA | Obligations of state and political subdivisions (municipal securities)
Schedule of Held-to-maturity Securities [Line Items]
Investment securities held to maturity, net	853,910
AA | FNMA/FHLMC
Schedule of Held-to-maturity Securities [Line Items]
Investment securities held to maturity, net	0
AA | GNMA
Schedule of Held-to-maturity Securities [Line Items]
Investment securities held to maturity, net	0
AA | GNMA commercial mortgage-related securities
Schedule of Held-to-maturity Securities [Line Items]
Investment securities held to maturity, net	0
A
Schedule of Held-to-maturity Securities [Line Items]
Investment securities held to maturity, net	20,358
A | US Treasury Securities
Schedule of Held-to-maturity Securities [Line Items]
Investment securities held to maturity, net	0
A | Obligations of state and political subdivisions (municipal securities)
Schedule of Held-to-maturity Securities [Line Items]
Investment securities held to maturity, net	20,358
A | FNMA/FHLMC
Schedule of Held-to-maturity Securities [Line Items]
Investment securities held to maturity, net	0
A | GNMA
Schedule of Held-to-maturity Securities [Line Items]
Investment securities held to maturity, net	0
A | GNMA commercial mortgage-related securities
Schedule of Held-to-maturity Securities [Line Items]
Investment securities held to maturity, net	$ 0

Investment Securities Gain_Loss

Investment Securities Gain/Loss Sale of Securities (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Investments, Debt and Equity Securities [Abstract]
Gross gains on available for sale securities	$ 3,106	$ 654	$ 9,304	$ 2,334
Gross gains on held to maturity securities	0	0	0	0
Total gains	3,106	654	9,304	2,334
Gross (losses) on available for sale securities	(11)	(13,636)	(90)	(13,636)
Gross (losses) on held to maturity securities	0	0	0	0
Total (losses)	(11)	(13,636)	(90)	(13,636)
Write-up of equity securities without readily determinable fair values	0	13,444	0	13,444
Investment securities gains (losses), net	3,096	463	9,214	2,143
Proceeds from sales of investment securities	$ 261,037	$ 803,105	$ 626,276	$ 934,228

Investment Securities, AFS an_3

Investment Securities, AFS and HTM Securities Gross Unrealized Losses (Details) $ in Thousands	Jun. 30, 2020USD ($)security	Dec. 31, 2019USD ($)security
Investment securities available for sale
Unrealized losses on available for sale securities, less than 12 months	$ (5,522)	$ (7,843)
Unrealized losses on available for sale securities, 12 months or more	(10,580)	(12,440)
Total unrealized losses on available for sale securities	(16,102)	(20,284)
Fair value of unrealized losses on available for sale securities, less than 12 months	212,172	834,616
Fair value of unrealized losses on available for sale securities, 12 months or more	193,164	748,487
Total fair value of unrealized losses on available for sale securities	$ 405,336	$ 1,583,104
Available-for-sale, Number of Securities
Available for sale, number of securities, less than 12 months | security	30	65
Available for sale, number of securities, 12 months or more | security	17	51
Investment securities held to maturity
Unrealized losses on held to maturity securities, less than 12 months	$ (52)	$ (2,199)
Unrealized losses on held to maturity securities, 12 months or more	(1)	(6,164)
Total unrealized losses on held to maturity securities	$ (53)	$ (8,363)
Held-to-maturity, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions, 12 Months or Longer | security	2	36
Fair value of unrealized losses on held to maturity securities, less than 12 months	$ 12,431	$ 292,267
Fair value of unrealized losses on held to maturity securities, 12 months or more	365	367,532
Total fair value of unrealized losses on held to maturity securities	$ 12,796	$ 659,799
Held-to-maturity, Securities In Unrealized Loss Positions Qualitative Disclosure Number Of Positions, less than 12 Months | security	8	67
SBA
Investment securities available for sale
Unrealized losses on available for sale securities, less than 12 months	$ (44)
Unrealized losses on available for sale securities, 12 months or more	0
Total unrealized losses on available for sale securities	(44)
Fair value of unrealized losses on available for sale securities, less than 12 months	9,422
Fair value of unrealized losses on available for sale securities, 12 months or more	0
Total fair value of unrealized losses on available for sale securities	$ 9,422
Available-for-sale, Number of Securities
Available for sale, number of securities, less than 12 months | security	15
Available for sale, number of securities, 12 months or more | security	0
Obligations of state and political subdivisions (municipal securities)
Investment securities available for sale
Unrealized losses on available for sale securities, less than 12 months	$ 0	$ (18)
Unrealized losses on available for sale securities, 12 months or more	0	0
Total unrealized losses on available for sale securities	0	(18)
Fair value of unrealized losses on available for sale securities, less than 12 months	548	1,225
Fair value of unrealized losses on available for sale securities, 12 months or more	0	0
Total fair value of unrealized losses on available for sale securities	$ 548	$ 1,225
Available-for-sale, Number of Securities
Available for sale, number of securities, less than 12 months | security	1	4
Available for sale, number of securities, 12 months or more | security	0	0
Investment securities held to maturity
Unrealized losses on held to maturity securities, less than 12 months	$ (52)	$ (1,105)
Unrealized losses on held to maturity securities, 12 months or more	(1)	(13)
Total unrealized losses on held to maturity securities	(53)	(1,118)
Fair value of unrealized losses on held to maturity securities, less than 12 months	12,431	77,562
Fair value of unrealized losses on held to maturity securities, 12 months or more	365	2,378
Total fair value of unrealized losses on held to maturity securities	$ 12,796	$ 79,940
Obligations of state and political subdivisions (municipal securities) | Held to maturity, number of securities, less than 12 months
Investment securities held to maturity
Number of held to maturity securities in a continuous unrealized loss position | security	8	52
Obligations of state and political subdivisions (municipal securities) | Held to maturity, number of securities, 12 months or more
Investment securities held to maturity
Number of held to maturity securities in a continuous unrealized loss position | security	2	6
FFELP
Investment securities available for sale
Unrealized losses on available for sale securities, less than 12 months	$ (5,478)	$ (6,092)
Unrealized losses on available for sale securities, 12 months or more	(10,580)	(393)
Total unrealized losses on available for sale securities	(16,058)	(6,485)
Fair value of unrealized losses on available for sale securities, less than 12 months	147,310	250,780
Fair value of unrealized losses on available for sale securities, 12 months or more	193,164	12,913
Total fair value of unrealized losses on available for sale securities	$ 340,474	$ 263,693
Available-for-sale, Number of Securities
Available for sale, number of securities, less than 12 months | security	9	19
Available for sale, number of securities, 12 months or more | security	17	2
Other Debt securities
Investment securities available for sale
Unrealized losses on available for sale securities, less than 12 months		$ 0
Unrealized losses on available for sale securities, 12 months or more		0
Total unrealized losses on available for sale securities		0
Fair value of unrealized losses on available for sale securities, less than 12 months		2,000
Fair value of unrealized losses on available for sale securities, 12 months or more		0
Total fair value of unrealized losses on available for sale securities		$ 2,000
Available-for-sale, Number of Securities
Available for sale, number of securities, less than 12 months | security		2
Available for sale, number of securities, 12 months or more | security		0
FNMA/FHLMC | Residential Related Securities
Investment securities available for sale
Unrealized losses on available for sale securities, less than 12 months	$ 0	$ 0
Unrealized losses on available for sale securities, 12 months or more	0	(59)
Total unrealized losses on available for sale securities	0	(59)
Fair value of unrealized losses on available for sale securities, less than 12 months	54,893	0
Fair value of unrealized losses on available for sale securities, 12 months or more	0	34,807
Total fair value of unrealized losses on available for sale securities	$ 54,893	$ 34,807
Available-for-sale, Number of Securities
Available for sale, number of securities, less than 12 months | security	5	0
Available for sale, number of securities, 12 months or more | security	0	4
Investment securities held to maturity
Unrealized losses on held to maturity securities, less than 12 months		$ (6)
Unrealized losses on held to maturity securities, 12 months or more		(9)
Total unrealized losses on held to maturity securities		(15)
Fair value of unrealized losses on held to maturity securities, less than 12 months		1,242
Fair value of unrealized losses on held to maturity securities, 12 months or more		833
Total fair value of unrealized losses on held to maturity securities		$ 2,075
FNMA/FHLMC | Residential Related Securities | Held to maturity, number of securities, less than 12 months
Investment securities held to maturity
Number of held to maturity securities in a continuous unrealized loss position | security		1
FNMA/FHLMC | Residential Related Securities | Held to maturity, number of securities, 12 months or more
Investment securities held to maturity
Number of held to maturity securities in a continuous unrealized loss position | security		1
GNMA | Residential Related Securities
Investment securities available for sale
Unrealized losses on available for sale securities, less than 12 months		$ (924)
Unrealized losses on available for sale securities, 12 months or more		(766)
Total unrealized losses on available for sale securities		(1,689)
Fair value of unrealized losses on available for sale securities, less than 12 months		322,394
Fair value of unrealized losses on available for sale securities, 12 months or more		79,461
Total fair value of unrealized losses on available for sale securities		$ 401,856
Available-for-sale, Number of Securities
Available for sale, number of securities, less than 12 months | security		18
Available for sale, number of securities, 12 months or more | security		3
Investment securities held to maturity
Unrealized losses on held to maturity securities, less than 12 months		$ (1,059)
Unrealized losses on held to maturity securities, 12 months or more		(49)
Total unrealized losses on held to maturity securities		(1,108)
Fair value of unrealized losses on held to maturity securities, less than 12 months		187,261
Fair value of unrealized losses on held to maturity securities, 12 months or more		6,587
Total fair value of unrealized losses on held to maturity securities		$ 193,849
GNMA | Residential Related Securities | Held to maturity, number of securities, less than 12 months
Investment securities held to maturity
Number of held to maturity securities in a continuous unrealized loss position | security		12
GNMA | Residential Related Securities | Held to maturity, number of securities, 12 months or more
Investment securities held to maturity
Number of held to maturity securities in a continuous unrealized loss position | security		8
GNMA | Commercial mortgage-related securities
Investment securities available for sale
Unrealized losses on available for sale securities, less than 12 months		$ (810)
Unrealized losses on available for sale securities, 12 months or more		(11,222)
Total unrealized losses on available for sale securities		(12,032)
Fair value of unrealized losses on available for sale securities, less than 12 months		258,218
Fair value of unrealized losses on available for sale securities, 12 months or more		621,307
Total fair value of unrealized losses on available for sale securities		$ 879,524
Available-for-sale, Number of Securities
Available for sale, number of securities, less than 12 months | security		22
Available for sale, number of securities, 12 months or more | security		42
Investment securities held to maturity
Unrealized losses on held to maturity securities, less than 12 months		$ (29)
Unrealized losses on held to maturity securities, 12 months or more		(6,093)
Total unrealized losses on held to maturity securities		(6,122)
Fair value of unrealized losses on held to maturity securities, less than 12 months		26,202
Fair value of unrealized losses on held to maturity securities, 12 months or more		357,733
Total fair value of unrealized losses on held to maturity securities		$ 383,935
GNMA | Commercial mortgage-related securities | Held to maturity, number of securities, less than 12 months
Investment securities held to maturity
Number of held to maturity securities in a continuous unrealized loss position | security		2
GNMA | Commercial mortgage-related securities | Held to maturity, number of securities, 12 months or more
Investment securities held to maturity
Number of held to maturity securities in a continuous unrealized loss position | security		21

Investment Securities (Details

Investment Securities (Details Textual) - USD ($) $ in Thousands	3 Months Ended			6 Months Ended		12 Months Ended
	Jun. 30, 2020	Mar. 31, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019	Dec. 31, 2019	Jan. 01, 2020
Investment Securities Information [Line Items]
Debt Securities, AFS, Principal Sold	$ 261,000	$ 281,000
Gain (Loss) on Sales of Mortgage Backed Securities (MBS)	3,000	6,000
Debt Securities, Available-for-sale, Sold at Par Value					$ 934,000
Pledged Financial Instruments, Not Separately Reported, Securities	1,900,000			$ 1,900,000		$ 2,600,000
Interest Receivable	87,097			87,097		91,196
Debt Securities, Held-to-maturity, Nonaccrual, Interest Income				0		0
Debt Securities, Held-to-maturity, Past Due	0			0
Held to maturity allowance for credit loss	61			61			$ 61
Federal Home Loan Bank Stock	126,000			126,000		149,000
Federal Reserve Bank Stock	81,000			81,000		78,000
Equity securities with readily determinable fair values, Fair Value	$ 2,000			$ 2,000		2,000
Visa Restricted Stock Owned. Total	77,996
Visa Restricted Stock Owned at Fair Value				77,000
Visa Restricted Stock Donated			42,039
Visa Restricted Stock Owned at Zero Cost	996
Equity securities	$ 13,000			$ 13,000		13,000
First Staunton Bancshares [Member]
Investment Securities Information [Line Items]
Carrying amount of Securities Sold		$ 84,000
Held-to-maturity Securities [Member]
Investment Securities Information [Line Items]
Interest Receivable	15,000			15,000		16,000
Available-for-sale Securities [Member]
Investment Securities Information [Line Items]
Interest Receivable	9,000			9,000		10,000
Federal Home Loan Bank Certificates and Obligations (FHLB) [Member]
Investment Securities Information [Line Items]
Interest Receivable	2,000			2,000		2,000
Federal Reserve Bank Stock [Member]
Investment Securities Information [Line Items]
Interest Receivable	$ 0			$ 0		$ 0

Loans Composition (Details)

Loans Composition (Details) - USD ($) $ in Thousands	Jun. 30, 2020	Dec. 31, 2019
Loans and Leases Receivable Disclosure [Line Items]
Loans	$ 24,832,671	$ 22,821,440
PPP
Loans and Leases Receivable Disclosure [Line Items]
Loans	1,012,033	0
Commercial and industrial
Loans and Leases Receivable Disclosure [Line Items]
Loans	7,968,709	7,354,594
Commercial real estate — owner occupied
Loans and Leases Receivable Disclosure [Line Items]
Loans	914,385	911,265
Commercial and business lending
Loans and Leases Receivable Disclosure [Line Items]
Loans	9,895,127	8,265,858
Commercial real estate — investor
Loans and Leases Receivable Disclosure [Line Items]
Loans	4,174,125	3,794,517
Real estate construction
Loans and Leases Receivable Disclosure [Line Items]
Loans	1,708,189	1,420,900
Commercial real estate lending
Loans and Leases Receivable Disclosure [Line Items]
Loans	5,882,314	5,215,417
Total commercial
Loans and Leases Receivable Disclosure [Line Items]
Loans	15,777,441	13,481,275
Residential mortgage
Loans and Leases Receivable Disclosure [Line Items]
Loans	7,933,518	8,136,980
Home equity
Loans and Leases Receivable Disclosure [Line Items]
Loans	795,671	852,025
Other consumer
Loans and Leases Receivable Disclosure [Line Items]
Loans	326,040	351,159
Total consumer
Loans and Leases Receivable Disclosure [Line Items]
Loans	$ 9,055,230	$ 9,340,164

Loans, Credit Quality Indicator

Loans, Credit Quality Indicator by Vintage Year (Details) $ in Thousands	Jun. 30, 2020USD ($)
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	$ 19,445
Financing Receivable, Revolving	2,924,286
Financing Receivable, Originated in Current Fiscal Year	4,165,465
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	5,762,111
Financing Receivable, Originated Two Years before Latest Fiscal Year	3,982,386
Financing Receivable, Originated Three Years before Latest Fiscal Year	2,554,155
Financing Receivable, Originated Four Years before Latest Fiscal Year	2,170,639
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	3,273,628
Total	24,832,671
Special Mention
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	234
Financing Receivable, Revolving	13,531
Financing Receivable, Originated in Current Fiscal Year	23,125
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	44,999
Financing Receivable, Originated Two Years before Latest Fiscal Year	55,868
Financing Receivable, Originated Three Years before Latest Fiscal Year	3,854
Financing Receivable, Originated Four Years before Latest Fiscal Year	25,195
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	15,683
Total	182,254
Pass
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	3,190
Financing Receivable, Revolving	2,894,381
Financing Receivable, Originated in Current Fiscal Year	4,085,744
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	5,624,245
Financing Receivable, Originated Two Years before Latest Fiscal Year	3,845,698
Financing Receivable, Originated Three Years before Latest Fiscal Year	2,459,878
Financing Receivable, Originated Four Years before Latest Fiscal Year	2,101,091
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	3,160,936
Total	24,171,974
Potential Problem
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	517
Financing Receivable, Revolving	15,618
Financing Receivable, Originated in Current Fiscal Year	52,540
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	71,634
Financing Receivable, Originated Two Years before Latest Fiscal Year	72,497
Financing Receivable, Originated Three Years before Latest Fiscal Year	56,719
Financing Receivable, Originated Four Years before Latest Fiscal Year	16,619
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	21,209
Total	306,836
Nonaccrual
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	15,504
Financing Receivable, Revolving	757
Financing Receivable, Originated in Current Fiscal Year	4,056
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	21,232
Financing Receivable, Originated Two Years before Latest Fiscal Year	8,323
Financing Receivable, Originated Three Years before Latest Fiscal Year	33,705
Financing Receivable, Originated Four Years before Latest Fiscal Year	27,733
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	75,800
Total	171,607
Oil and Gas Portfolio Segment [Member] | Potential Problem
Financing Receivable, Allowance for Credit Loss [Line Items]
Total	63,000
Oil and Gas Portfolio Segment [Member] | Nonaccrual
Financing Receivable, Allowance for Credit Loss [Line Items]
Total	50,000
Total commercial
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	16,599
Financing Receivable, Revolving	2,120,969
Financing Receivable, Originated in Current Fiscal Year	3,212,424
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	3,999,718
Financing Receivable, Originated Two Years before Latest Fiscal Year	3,180,887
Financing Receivable, Originated Three Years before Latest Fiscal Year	1,253,039
Financing Receivable, Originated Four Years before Latest Fiscal Year	988,922
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	1,021,484
Total	15,777,441
Total commercial | Special Mention
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	0
Financing Receivable, Revolving	12,802
Financing Receivable, Originated in Current Fiscal Year	23,125
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	44,969
Financing Receivable, Originated Two Years before Latest Fiscal Year	55,576
Financing Receivable, Originated Three Years before Latest Fiscal Year	3,829
Financing Receivable, Originated Four Years before Latest Fiscal Year	25,159
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	14,860
Total	180,320
Total commercial | Pass
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	1,170
Financing Receivable, Revolving	2,094,324
Financing Receivable, Originated in Current Fiscal Year	3,135,547
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	3,866,425
Financing Receivable, Originated Two Years before Latest Fiscal Year	3,052,162
Financing Receivable, Originated Three Years before Latest Fiscal Year	1,167,818
Financing Receivable, Originated Four Years before Latest Fiscal Year	930,746
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	954,496
Total	15,201,517
Total commercial | Potential Problem
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	517
Financing Receivable, Revolving	13,843
Financing Receivable, Originated in Current Fiscal Year	51,760
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	70,927
Financing Receivable, Originated Two Years before Latest Fiscal Year	72,292
Financing Receivable, Originated Three Years before Latest Fiscal Year	56,507
Financing Receivable, Originated Four Years before Latest Fiscal Year	16,393
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	20,035
Total	301,758
Total commercial | Nonaccrual
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	14,911
Financing Receivable, Revolving	0
Financing Receivable, Originated in Current Fiscal Year	1,992
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	17,397
Financing Receivable, Originated Two Years before Latest Fiscal Year	857
Financing Receivable, Originated Three Years before Latest Fiscal Year	24,884
Financing Receivable, Originated Four Years before Latest Fiscal Year	16,624
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	32,093
Total	93,846
Total commercial | PPP
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	0
Financing Receivable, Revolving	0
Financing Receivable, Originated in Current Fiscal Year	1,012,033
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	0
Financing Receivable, Originated Two Years before Latest Fiscal Year	0
Financing Receivable, Originated Three Years before Latest Fiscal Year	0
Financing Receivable, Originated Four Years before Latest Fiscal Year	0
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	0
Total	1,012,033
Total commercial | PPP | Special Mention
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	0
Financing Receivable, Revolving	0
Financing Receivable, Originated in Current Fiscal Year	7,409
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	0
Financing Receivable, Originated Two Years before Latest Fiscal Year	0
Financing Receivable, Originated Three Years before Latest Fiscal Year	0
Financing Receivable, Originated Four Years before Latest Fiscal Year	0
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	0
Total	7,409
Total commercial | PPP | Pass
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	0
Financing Receivable, Revolving	0
Financing Receivable, Originated in Current Fiscal Year	985,462
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	0
Financing Receivable, Originated Two Years before Latest Fiscal Year	0
Financing Receivable, Originated Three Years before Latest Fiscal Year	0
Financing Receivable, Originated Four Years before Latest Fiscal Year	0
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	0
Total	985,462
Total commercial | PPP | Potential Problem
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	0
Financing Receivable, Revolving	0
Financing Receivable, Originated in Current Fiscal Year	19,161
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	0
Financing Receivable, Originated Two Years before Latest Fiscal Year	0
Financing Receivable, Originated Three Years before Latest Fiscal Year	0
Financing Receivable, Originated Four Years before Latest Fiscal Year	0
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	0
Total	19,161
Total commercial | Commercial And Industrial Financing Receivable [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	15,003
Financing Receivable, Revolving	1,858,562
Financing Receivable, Originated in Current Fiscal Year	948,477
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	1,806,776
Financing Receivable, Originated Two Years before Latest Fiscal Year	1,724,210
Financing Receivable, Originated Three Years before Latest Fiscal Year	674,708
Financing Receivable, Originated Four Years before Latest Fiscal Year	391,662
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	564,314
Total	7,968,709
Total commercial | Commercial And Industrial Financing Receivable [Member] | Special Mention
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	0
Financing Receivable, Revolving	12,802
Financing Receivable, Originated in Current Fiscal Year	379
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	23,783
Financing Receivable, Originated Two Years before Latest Fiscal Year	7,299
Financing Receivable, Originated Three Years before Latest Fiscal Year	15
Financing Receivable, Originated Four Years before Latest Fiscal Year	5,541
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	17
Total	49,836
Total commercial | Commercial And Industrial Financing Receivable [Member] | Pass
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	20
Financing Receivable, Revolving	1,832,797
Financing Receivable, Originated in Current Fiscal Year	929,266
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	1,759,308
Financing Receivable, Originated Two Years before Latest Fiscal Year	1,650,024
Financing Receivable, Originated Three Years before Latest Fiscal Year	597,967
Financing Receivable, Originated Four Years before Latest Fiscal Year	361,006
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	531,995
Total	7,662,364
Total commercial | Commercial And Industrial Financing Receivable [Member] | Potential Problem
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	517
Financing Receivable, Revolving	12,963
Financing Receivable, Originated in Current Fiscal Year	17,235
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	16,544
Financing Receivable, Originated Two Years before Latest Fiscal Year	66,699
Financing Receivable, Originated Three Years before Latest Fiscal Year	52,176
Financing Receivable, Originated Four Years before Latest Fiscal Year	8,492
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	2,162
Total	176,270
Total commercial | Commercial And Industrial Financing Receivable [Member] | Nonaccrual
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	14,465
Financing Receivable, Revolving	0
Financing Receivable, Originated in Current Fiscal Year	1,597
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	7,140
Financing Receivable, Originated Two Years before Latest Fiscal Year	188
Financing Receivable, Originated Three Years before Latest Fiscal Year	24,550
Financing Receivable, Originated Four Years before Latest Fiscal Year	16,624
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	30,141
Total	80,239
Total commercial | Commercial real estate — owner occupied
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	1,150
Financing Receivable, Revolving	17,973
Financing Receivable, Originated in Current Fiscal Year	97,217
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	230,960
Financing Receivable, Originated Two Years before Latest Fiscal Year	146,670
Financing Receivable, Originated Three Years before Latest Fiscal Year	124,887
Financing Receivable, Originated Four Years before Latest Fiscal Year	174,911
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	121,768
Total	914,385
Total commercial | Commercial real estate — owner occupied | Special Mention
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	0
Financing Receivable, Revolving	0
Financing Receivable, Originated in Current Fiscal Year	2,450
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	16,317
Financing Receivable, Originated Two Years before Latest Fiscal Year	12,776
Financing Receivable, Originated Three Years before Latest Fiscal Year	128
Financing Receivable, Originated Four Years before Latest Fiscal Year	2,439
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	5,321
Total	39,432
Total commercial | Commercial real estate — owner occupied | Pass
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	1,150
Financing Receivable, Revolving	17,897
Financing Receivable, Originated in Current Fiscal Year	94,106
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	213,234
Financing Receivable, Originated Two Years before Latest Fiscal Year	131,748
Financing Receivable, Originated Three Years before Latest Fiscal Year	121,963
Financing Receivable, Originated Four Years before Latest Fiscal Year	166,366
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	111,790
Total	857,103
Total commercial | Commercial real estate — owner occupied | Potential Problem
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	0
Financing Receivable, Revolving	77
Financing Receivable, Originated in Current Fiscal Year	661
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	1,409
Financing Receivable, Originated Two Years before Latest Fiscal Year	1,923
Financing Receivable, Originated Three Years before Latest Fiscal Year	2,461
Financing Receivable, Originated Four Years before Latest Fiscal Year	6,106
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	3,281
Total	15,919
Total commercial | Commercial real estate — owner occupied | Nonaccrual
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	0
Financing Receivable, Revolving	0
Financing Receivable, Originated in Current Fiscal Year	0
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	0
Financing Receivable, Originated Two Years before Latest Fiscal Year	223
Financing Receivable, Originated Three Years before Latest Fiscal Year	335
Financing Receivable, Originated Four Years before Latest Fiscal Year	0
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	1,374
Total	1,932
Total commercial | Commercial and business lending
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	16,153
Financing Receivable, Revolving	1,876,535
Financing Receivable, Originated in Current Fiscal Year	2,057,727
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	2,037,736
Financing Receivable, Originated Two Years before Latest Fiscal Year	1,870,880
Financing Receivable, Originated Three Years before Latest Fiscal Year	799,595
Financing Receivable, Originated Four Years before Latest Fiscal Year	566,572
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	686,082
Total	9,895,127
Total commercial | Commercial and business lending | Special Mention
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	0
Financing Receivable, Revolving	12,802
Financing Receivable, Originated in Current Fiscal Year	10,239
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	40,100
Financing Receivable, Originated Two Years before Latest Fiscal Year	20,075
Financing Receivable, Originated Three Years before Latest Fiscal Year	143
Financing Receivable, Originated Four Years before Latest Fiscal Year	7,979
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	5,338
Total	96,677
Total commercial | Commercial and business lending | Pass
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	1,170
Financing Receivable, Revolving	1,850,694
Financing Receivable, Originated in Current Fiscal Year	2,008,834
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	1,972,542
Financing Receivable, Originated Two Years before Latest Fiscal Year	1,781,772
Financing Receivable, Originated Three Years before Latest Fiscal Year	719,930
Financing Receivable, Originated Four Years before Latest Fiscal Year	527,371
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	643,786
Total	9,504,929
Total commercial | Commercial and business lending | Potential Problem
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	517
Financing Receivable, Revolving	13,040
Financing Receivable, Originated in Current Fiscal Year	37,058
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	17,953
Financing Receivable, Originated Two Years before Latest Fiscal Year	68,622
Financing Receivable, Originated Three Years before Latest Fiscal Year	54,637
Financing Receivable, Originated Four Years before Latest Fiscal Year	14,598
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	5,443
Total	211,350
Total commercial | Commercial and business lending | Nonaccrual
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	14,465
Financing Receivable, Revolving	0
Financing Receivable, Originated in Current Fiscal Year	1,597
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	7,140
Financing Receivable, Originated Two Years before Latest Fiscal Year	411
Financing Receivable, Originated Three Years before Latest Fiscal Year	24,884
Financing Receivable, Originated Four Years before Latest Fiscal Year	16,624
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	31,515
Total	82,171
Total commercial | Commercial real estate — investor
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	446
Financing Receivable, Revolving	176,850
Financing Receivable, Originated in Current Fiscal Year	875,014
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	1,151,033
Financing Receivable, Originated Two Years before Latest Fiscal Year	857,101
Financing Receivable, Originated Three Years before Latest Fiscal Year	382,098
Financing Receivable, Originated Four Years before Latest Fiscal Year	419,255
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	312,775
Total	4,174,125
Total commercial | Commercial real estate — investor | Special Mention
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	0
Financing Receivable, Revolving	0
Financing Receivable, Originated in Current Fiscal Year	12,886
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	4,869
Financing Receivable, Originated Two Years before Latest Fiscal Year	17,098
Financing Receivable, Originated Three Years before Latest Fiscal Year	3,686
Financing Receivable, Originated Four Years before Latest Fiscal Year	17,180
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	9,509
Total	65,228
Total commercial | Commercial real estate — investor | Pass
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	0
Financing Receivable, Revolving	176,047
Financing Receivable, Originated in Current Fiscal Year	847,031
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	1,083,145
Financing Receivable, Originated Two Years before Latest Fiscal Year	836,244
Financing Receivable, Originated Three Years before Latest Fiscal Year	378,098
Financing Receivable, Originated Four Years before Latest Fiscal Year	400,279
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	288,644
Total	4,009,488
Total commercial | Commercial real estate — investor | Potential Problem
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	0
Financing Receivable, Revolving	803
Financing Receivable, Originated in Current Fiscal Year	14,703
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	52,762
Financing Receivable, Originated Two Years before Latest Fiscal Year	3,313
Financing Receivable, Originated Three Years before Latest Fiscal Year	314
Financing Receivable, Originated Four Years before Latest Fiscal Year	1,796
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	14,547
Total	88,237
Total commercial | Commercial real estate — investor | Nonaccrual
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	446
Financing Receivable, Revolving	0
Financing Receivable, Originated in Current Fiscal Year	395
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	10,256
Financing Receivable, Originated Two Years before Latest Fiscal Year	446
Financing Receivable, Originated Three Years before Latest Fiscal Year	0
Financing Receivable, Originated Four Years before Latest Fiscal Year	0
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	75
Total	11,172
Total commercial | Real Estate Construction
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	0
Financing Receivable, Revolving	67,584
Financing Receivable, Originated in Current Fiscal Year	279,683
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	810,949
Financing Receivable, Originated Two Years before Latest Fiscal Year	452,906
Financing Receivable, Originated Three Years before Latest Fiscal Year	71,346
Financing Receivable, Originated Four Years before Latest Fiscal Year	3,095
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	22,627
Total	1,708,189
Total commercial | Real Estate Construction | Special Mention
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	0
Financing Receivable, Revolving	0
Financing Receivable, Originated in Current Fiscal Year	0
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	0
Financing Receivable, Originated Two Years before Latest Fiscal Year	18,402
Financing Receivable, Originated Three Years before Latest Fiscal Year	0
Financing Receivable, Originated Four Years before Latest Fiscal Year	0
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	12
Total	18,414
Total commercial | Real Estate Construction | Pass
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	0
Financing Receivable, Revolving	67,584
Financing Receivable, Originated in Current Fiscal Year	279,683
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	810,738
Financing Receivable, Originated Two Years before Latest Fiscal Year	434,146
Financing Receivable, Originated Three Years before Latest Fiscal Year	69,790
Financing Receivable, Originated Four Years before Latest Fiscal Year	3,095
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	22,066
Total	1,687,100
Total commercial | Real Estate Construction | Potential Problem
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	0
Financing Receivable, Revolving	0
Financing Receivable, Originated in Current Fiscal Year	0
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	211
Financing Receivable, Originated Two Years before Latest Fiscal Year	358
Financing Receivable, Originated Three Years before Latest Fiscal Year	1,557
Financing Receivable, Originated Four Years before Latest Fiscal Year	0
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	45
Total	2,170
Total commercial | Real Estate Construction | Nonaccrual
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	0
Financing Receivable, Revolving	0
Financing Receivable, Originated in Current Fiscal Year	0
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	0
Financing Receivable, Originated Two Years before Latest Fiscal Year	0
Financing Receivable, Originated Three Years before Latest Fiscal Year	0
Financing Receivable, Originated Four Years before Latest Fiscal Year	0
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	503
Total	503
Total commercial | Commercial Real Estate
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	446
Financing Receivable, Revolving	244,433
Financing Receivable, Originated in Current Fiscal Year	1,154,696
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	1,961,982
Financing Receivable, Originated Two Years before Latest Fiscal Year	1,310,007
Financing Receivable, Originated Three Years before Latest Fiscal Year	453,444
Financing Receivable, Originated Four Years before Latest Fiscal Year	422,349
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	335,402
Total	5,882,314
Total commercial | Commercial Real Estate | Special Mention
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	0
Financing Receivable, Revolving	0
Financing Receivable, Originated in Current Fiscal Year	12,886
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	4,869
Financing Receivable, Originated Two Years before Latest Fiscal Year	35,500
Financing Receivable, Originated Three Years before Latest Fiscal Year	3,686
Financing Receivable, Originated Four Years before Latest Fiscal Year	17,180
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	9,522
Total	83,643
Total commercial | Commercial Real Estate | Pass
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	0
Financing Receivable, Revolving	243,630
Financing Receivable, Originated in Current Fiscal Year	1,126,713
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	1,893,883
Financing Receivable, Originated Two Years before Latest Fiscal Year	1,270,390
Financing Receivable, Originated Three Years before Latest Fiscal Year	447,888
Financing Receivable, Originated Four Years before Latest Fiscal Year	403,374
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	310,710
Total	5,696,589
Total commercial | Commercial Real Estate | Potential Problem
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	0
Financing Receivable, Revolving	803
Financing Receivable, Originated in Current Fiscal Year	14,703
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	52,973
Financing Receivable, Originated Two Years before Latest Fiscal Year	3,670
Financing Receivable, Originated Three Years before Latest Fiscal Year	1,870
Financing Receivable, Originated Four Years before Latest Fiscal Year	1,796
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	14,592
Total	90,407
Total commercial | Commercial Real Estate | Nonaccrual
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	446
Financing Receivable, Revolving	0
Financing Receivable, Originated in Current Fiscal Year	395
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	10,256
Financing Receivable, Originated Two Years before Latest Fiscal Year	446
Financing Receivable, Originated Three Years before Latest Fiscal Year	0
Financing Receivable, Originated Four Years before Latest Fiscal Year	0
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	578
Total	11,675
Total consumer
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	2,846
Financing Receivable, Revolving	803,318
Financing Receivable, Originated in Current Fiscal Year	953,041
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	1,762,393
Financing Receivable, Originated Two Years before Latest Fiscal Year	801,499
Financing Receivable, Originated Three Years before Latest Fiscal Year	1,301,117
Financing Receivable, Originated Four Years before Latest Fiscal Year	1,181,717
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	2,252,145
Total	9,055,230
Total consumer | Special Mention
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	234
Financing Receivable, Revolving	729
Financing Receivable, Originated in Current Fiscal Year	0
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	30
Financing Receivable, Originated Two Years before Latest Fiscal Year	292
Financing Receivable, Originated Three Years before Latest Fiscal Year	24
Financing Receivable, Originated Four Years before Latest Fiscal Year	36
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	823
Total	1,934
Total consumer | Pass
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	2,020
Financing Receivable, Revolving	800,057
Financing Receivable, Originated in Current Fiscal Year	950,196
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	1,757,820
Financing Receivable, Originated Two Years before Latest Fiscal Year	793,537
Financing Receivable, Originated Three Years before Latest Fiscal Year	1,292,060
Financing Receivable, Originated Four Years before Latest Fiscal Year	1,170,346
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	2,206,441
Total	8,970,456
Total consumer | Potential Problem
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	0
Financing Receivable, Revolving	1,775
Financing Receivable, Originated in Current Fiscal Year	780
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	707
Financing Receivable, Originated Two Years before Latest Fiscal Year	205
Financing Receivable, Originated Three Years before Latest Fiscal Year	212
Financing Receivable, Originated Four Years before Latest Fiscal Year	226
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	1,174
Total	5,078
Total consumer | Nonaccrual
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	593
Financing Receivable, Revolving	757
Financing Receivable, Originated in Current Fiscal Year	2,065
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	3,836
Financing Receivable, Originated Two Years before Latest Fiscal Year	7,466
Financing Receivable, Originated Three Years before Latest Fiscal Year	8,821
Financing Receivable, Originated Four Years before Latest Fiscal Year	11,110
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	43,707
Total	77,761
Total consumer | Residential mortgage
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	0
Financing Receivable, Revolving	90
Financing Receivable, Originated in Current Fiscal Year	946,490
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	1,730,982
Financing Receivable, Originated Two Years before Latest Fiscal Year	774,348
Financing Receivable, Originated Three Years before Latest Fiscal Year	1,282,822
Financing Receivable, Originated Four Years before Latest Fiscal Year	1,171,880
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	2,026,905
Total	7,933,518
Total consumer | Residential mortgage | Special Mention
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	0
Financing Receivable, Revolving	0
Financing Receivable, Originated in Current Fiscal Year	0
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	0
Financing Receivable, Originated Two Years before Latest Fiscal Year	270
Financing Receivable, Originated Three Years before Latest Fiscal Year	0
Financing Receivable, Originated Four Years before Latest Fiscal Year	36
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	206
Total	511
Total consumer | Residential mortgage | Pass
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	0
Financing Receivable, Revolving	90
Financing Receivable, Originated in Current Fiscal Year	943,953
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	1,726,616
Financing Receivable, Originated Two Years before Latest Fiscal Year	766,921
Financing Receivable, Originated Three Years before Latest Fiscal Year	1,274,176
Financing Receivable, Originated Four Years before Latest Fiscal Year	1,160,820
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	1,990,617
Total	7,863,194
Total consumer | Residential mortgage | Potential Problem
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	0
Financing Receivable, Revolving	0
Financing Receivable, Originated in Current Fiscal Year	780
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	707
Financing Receivable, Originated Two Years before Latest Fiscal Year	205
Financing Receivable, Originated Three Years before Latest Fiscal Year	212
Financing Receivable, Originated Four Years before Latest Fiscal Year	226
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	1,028
Total	3,157
Total consumer | Residential mortgage | Nonaccrual
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	0
Financing Receivable, Revolving	0
Financing Receivable, Originated in Current Fiscal Year	1,758
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	3,659
Financing Receivable, Originated Two Years before Latest Fiscal Year	6,953
Financing Receivable, Originated Three Years before Latest Fiscal Year	8,434
Financing Receivable, Originated Four Years before Latest Fiscal Year	10,798
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	35,055
Total	66,656
Total consumer | Home Equity Loan
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	2,824
Financing Receivable, Revolving	634,013
Financing Receivable, Originated in Current Fiscal Year	2,044
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	16,564
Financing Receivable, Originated Two Years before Latest Fiscal Year	21,541
Financing Receivable, Originated Three Years before Latest Fiscal Year	15,484
Financing Receivable, Originated Four Years before Latest Fiscal Year	7,743
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	98,282
Total	795,671
Total consumer | Home Equity Loan | Special Mention
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	233
Financing Receivable, Revolving	199
Financing Receivable, Originated in Current Fiscal Year	0
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	0
Financing Receivable, Originated Two Years before Latest Fiscal Year	16
Financing Receivable, Originated Three Years before Latest Fiscal Year	24
Financing Receivable, Originated Four Years before Latest Fiscal Year	0
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	610
Total	849
Total consumer | Home Equity Loan | Pass
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	2,005
Financing Receivable, Revolving	631,366
Financing Receivable, Originated in Current Fiscal Year	1,746
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	16,439
Financing Receivable, Originated Two Years before Latest Fiscal Year	21,034
Financing Receivable, Originated Three Years before Latest Fiscal Year	15,073
Financing Receivable, Originated Four Years before Latest Fiscal Year	7,510
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	88,904
Total	782,073
Total consumer | Home Equity Loan | Potential Problem
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	0
Financing Receivable, Revolving	1,775
Financing Receivable, Originated in Current Fiscal Year	0
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	0
Financing Receivable, Originated Two Years before Latest Fiscal Year	0
Financing Receivable, Originated Three Years before Latest Fiscal Year	0
Financing Receivable, Originated Four Years before Latest Fiscal Year	0
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	146
Total	1,921
Total consumer | Home Equity Loan | Nonaccrual
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	586
Financing Receivable, Revolving	673
Financing Receivable, Originated in Current Fiscal Year	297
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	124
Financing Receivable, Originated Two Years before Latest Fiscal Year	491
Financing Receivable, Originated Three Years before Latest Fiscal Year	387
Financing Receivable, Originated Four Years before Latest Fiscal Year	233
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	8,623
Total	10,829
Total consumer | Other consumer
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	22
Financing Receivable, Revolving	169,215
Financing Receivable, Originated in Current Fiscal Year	4,507
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	14,847
Financing Receivable, Originated Two Years before Latest Fiscal Year	5,610
Financing Receivable, Originated Three Years before Latest Fiscal Year	2,811
Financing Receivable, Originated Four Years before Latest Fiscal Year	2,094
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	126,957
Total	326,040
Total consumer | Other consumer | Special Mention
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	1
Financing Receivable, Revolving	530
Financing Receivable, Originated in Current Fiscal Year	0
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	30
Financing Receivable, Originated Two Years before Latest Fiscal Year	6
Financing Receivable, Originated Three Years before Latest Fiscal Year	0
Financing Receivable, Originated Four Years before Latest Fiscal Year	0
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	7
Total	574
Total consumer | Other consumer | Pass
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	15
Financing Receivable, Revolving	168,601
Financing Receivable, Originated in Current Fiscal Year	4,497
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	14,764
Financing Receivable, Originated Two Years before Latest Fiscal Year	5,581
Financing Receivable, Originated Three Years before Latest Fiscal Year	2,811
Financing Receivable, Originated Four Years before Latest Fiscal Year	2,015
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	126,920
Total	325,190
Total consumer | Other consumer | Nonaccrual
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	7
Financing Receivable, Revolving	84
Financing Receivable, Originated in Current Fiscal Year	10
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	53
Financing Receivable, Originated Two Years before Latest Fiscal Year	22
Financing Receivable, Originated Three Years before Latest Fiscal Year	0
Financing Receivable, Originated Four Years before Latest Fiscal Year	78
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	30
Total	$ 276

Loans Credit Quality Indicator

Loans Credit Quality Indicator (Details) - USD ($) $ in Thousands	Jun. 30, 2020	Dec. 31, 2019
Financing Receivable, Credit Quality Indicator [Line Items]
Loans	$ 24,832,671	$ 22,821,440
Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Loans		22,294,939
Special Mention
Financing Receivable, Credit Quality Indicator [Line Items]
Loans		247,022
Potential Problem
Financing Receivable, Credit Quality Indicator [Line Items]
Loans		161,097
Nonaccrual
Financing Receivable, Credit Quality Indicator [Line Items]
Loans		118,380
Commercial and industrial
Financing Receivable, Credit Quality Indicator [Line Items]
Loans	7,968,709	7,354,594
Commercial and industrial | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Loans		7,118,448
Commercial and industrial | Special Mention
Financing Receivable, Credit Quality Indicator [Line Items]
Loans		79,525
Commercial and industrial | Potential Problem
Financing Receivable, Credit Quality Indicator [Line Items]
Loans		110,308
Commercial and industrial | Nonaccrual
Financing Receivable, Credit Quality Indicator [Line Items]
Loans		46,312
Commercial real estate — owner occupied
Financing Receivable, Credit Quality Indicator [Line Items]
Loans	914,385	911,265
Commercial real estate — owner occupied | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Loans		866,193
Commercial real estate — owner occupied | Special Mention
Financing Receivable, Credit Quality Indicator [Line Items]
Loans		25,115
Commercial real estate — owner occupied | Potential Problem
Financing Receivable, Credit Quality Indicator [Line Items]
Loans		19,889
Commercial real estate — owner occupied | Nonaccrual
Financing Receivable, Credit Quality Indicator [Line Items]
Loans		67
Commercial and business lending
Financing Receivable, Credit Quality Indicator [Line Items]
Loans	9,895,127	8,265,858
Commercial and business lending | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Loans		7,984,641
Commercial and business lending | Special Mention
Financing Receivable, Credit Quality Indicator [Line Items]
Loans		104,641
Commercial and business lending | Potential Problem
Financing Receivable, Credit Quality Indicator [Line Items]
Loans		130,197
Commercial and business lending | Nonaccrual
Financing Receivable, Credit Quality Indicator [Line Items]
Loans		46,380
Commercial real estate — investor
Financing Receivable, Credit Quality Indicator [Line Items]
Loans	4,174,125	3,794,517
Commercial real estate — investor | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Loans		3,620,785
Commercial real estate — investor | Special Mention
Financing Receivable, Credit Quality Indicator [Line Items]
Loans		139,873
Commercial real estate — investor | Potential Problem
Financing Receivable, Credit Quality Indicator [Line Items]
Loans		29,449
Commercial real estate — investor | Nonaccrual
Financing Receivable, Credit Quality Indicator [Line Items]
Loans		4,409
Real estate construction
Financing Receivable, Credit Quality Indicator [Line Items]
Loans	1,708,189	1,420,900
Real estate construction | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Loans		1,420,374
Real estate construction | Special Mention
Financing Receivable, Credit Quality Indicator [Line Items]
Loans		33
Real estate construction | Potential Problem
Financing Receivable, Credit Quality Indicator [Line Items]
Loans		0
Real estate construction | Nonaccrual
Financing Receivable, Credit Quality Indicator [Line Items]
Loans		493
Commercial real estate lending
Financing Receivable, Credit Quality Indicator [Line Items]
Loans	5,882,314	5,215,417
Commercial real estate lending | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Loans		5,041,159
Commercial real estate lending | Special Mention
Financing Receivable, Credit Quality Indicator [Line Items]
Loans		139,906
Commercial real estate lending | Potential Problem
Financing Receivable, Credit Quality Indicator [Line Items]
Loans		29,449
Commercial real estate lending | Nonaccrual
Financing Receivable, Credit Quality Indicator [Line Items]
Loans		4,902
Total commercial
Financing Receivable, Credit Quality Indicator [Line Items]
Loans	15,777,441	13,481,275
Total commercial | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Loans		13,025,800
Total commercial | Special Mention
Financing Receivable, Credit Quality Indicator [Line Items]
Loans		244,547
Total commercial | Potential Problem
Financing Receivable, Credit Quality Indicator [Line Items]
Loans		159,646
Total commercial | Nonaccrual
Financing Receivable, Credit Quality Indicator [Line Items]
Loans		51,282
Residential mortgage
Financing Receivable, Credit Quality Indicator [Line Items]
Loans	7,933,518	8,136,980
Residential mortgage | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Loans		8,077,122
Residential mortgage | Special Mention
Financing Receivable, Credit Quality Indicator [Line Items]
Loans		563
Residential mortgage | Potential Problem
Financing Receivable, Credit Quality Indicator [Line Items]
Loans		1,451
Residential mortgage | Nonaccrual
Financing Receivable, Credit Quality Indicator [Line Items]
Loans		57,844
Home equity
Financing Receivable, Credit Quality Indicator [Line Items]
Loans	795,671	852,025
Home equity | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Loans		841,757
Home equity | Special Mention
Financing Receivable, Credit Quality Indicator [Line Items]
Loans		1,164
Home equity | Potential Problem
Financing Receivable, Credit Quality Indicator [Line Items]
Loans		0
Home equity | Nonaccrual
Financing Receivable, Credit Quality Indicator [Line Items]
Loans		9,104
Other consumer
Financing Receivable, Credit Quality Indicator [Line Items]
Loans	326,040	351,159
Other consumer | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Loans		350,260
Other consumer | Special Mention
Financing Receivable, Credit Quality Indicator [Line Items]
Loans		748
Other consumer | Potential Problem
Financing Receivable, Credit Quality Indicator [Line Items]
Loans		0
Other consumer | Nonaccrual
Financing Receivable, Credit Quality Indicator [Line Items]
Loans		152
Total consumer
Financing Receivable, Credit Quality Indicator [Line Items]
Loans	$ 9,055,230	9,340,164
Total consumer | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Loans		9,269,139
Total consumer | Special Mention
Financing Receivable, Credit Quality Indicator [Line Items]
Loans		2,475
Total consumer | Potential Problem
Financing Receivable, Credit Quality Indicator [Line Items]
Loans		1,451
Total consumer | Nonaccrual
Financing Receivable, Credit Quality Indicator [Line Items]
Loans		$ 67,099

Loans Past Due Status (Details)

Loans Past Due Status (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
	Jun. 30, 2020	Jun. 30, 2020	Dec. 31, 2019
Summarized details of Loans
Current(a)	$ 24,636,810	$ 24,636,810	$ 22,679,696
Nonaccrual(b)(c)	171,607	171,607	118,380
Loans and Leases Receivable, Net of Deferred Income, Total	24,832,671	24,832,671	22,821,440
Nonaccrual Loans, Current Portion	$ 117,000	$ 117,000	$ 48,000
Percent of current nonaccrual loans	68.00%	68.00%	41.00%
Financing Receivable, Nonaccrual, Interest Income	$ 0	$ 0
Financing Receivable, Nonaccrual, No Allowance	91,000	91,000
30-59 Days Past Due
Summarized details of Loans
Total Past Due	9,664	9,664	$ 18,188
60-89 Days Past Due
Summarized details of Loans
Total Past Due	13,125	13,125	2,916
90 Days or More Past Due
Summarized details of Loans
Total Past Due	1,466	1,466	2,259
PPP
Summarized details of Loans
Current(a)	1,012,033	1,012,033
Nonaccrual(b)(c)	0	0
Loans and Leases Receivable, Net of Deferred Income, Total	1,012,033	1,012,033	0
PPP | 30-59 Days Past Due
Summarized details of Loans
Total Past Due	0	0
PPP | 60-89 Days Past Due
Summarized details of Loans
Total Past Due	0	0
PPP | 90 Days or More Past Due
Summarized details of Loans
Total Past Due	0	0
Commercial and industrial
Summarized details of Loans
Current(a)	7,887,369	7,887,369	7,307,118
Nonaccrual(b)(c)	80,239	80,239	46,312
Loans and Leases Receivable, Net of Deferred Income, Total	7,968,709	7,968,709	7,354,594
Commercial and industrial | 30-59 Days Past Due
Summarized details of Loans
Total Past Due	274	274	576
Commercial and industrial | 60-89 Days Past Due
Summarized details of Loans
Total Past Due	442	442	245
Commercial and industrial | 90 Days or More Past Due
Summarized details of Loans
Total Past Due	385	385	342
Commercial real estate — owner occupied
Summarized details of Loans
Current(a)	912,254	912,254	909,828
Nonaccrual(b)(c)	1,932	1,932	67
Loans and Leases Receivable, Net of Deferred Income, Total	914,385	914,385	911,265
Commercial real estate — owner occupied | 30-59 Days Past Due
Summarized details of Loans
Total Past Due	199	199	1,369
Commercial real estate — owner occupied | 60-89 Days Past Due
Summarized details of Loans
Total Past Due	0	0	0
Commercial real estate — owner occupied | 90 Days or More Past Due
Summarized details of Loans
Total Past Due	0	0	0
Commercial and business lending
Summarized details of Loans
Current(a)	9,811,656	9,811,656	8,216,947
Nonaccrual(b)(c)	82,171	82,171	46,380
Loans and Leases Receivable, Net of Deferred Income, Total	9,895,127	9,895,127	8,265,858
Commercial and business lending | 30-59 Days Past Due
Summarized details of Loans
Total Past Due	473	473	1,945
Commercial and business lending | 60-89 Days Past Due
Summarized details of Loans
Total Past Due	442	442	245
Commercial and business lending | 90 Days or More Past Due
Summarized details of Loans
Total Past Due	385	385	342
Commercial real estate — investor
Summarized details of Loans
Current(a)	4,149,079	4,149,079	3,788,296
Nonaccrual(b)(c)	11,172	11,172	4,409
Loans and Leases Receivable, Net of Deferred Income, Total	4,174,125	4,174,125	3,794,517
Commercial real estate — investor | 30-59 Days Past Due
Summarized details of Loans
Total Past Due	2,886	2,886	1,812
Commercial real estate — investor | 60-89 Days Past Due
Summarized details of Loans
Total Past Due	10,989	10,989	0
Commercial real estate — investor | 90 Days or More Past Due
Summarized details of Loans
Total Past Due	0	0	0
Real estate construction
Summarized details of Loans
Current(a)	1,707,300	1,707,300	1,420,310
Nonaccrual(b)(c)	503	503	493
Loans and Leases Receivable, Net of Deferred Income, Total	1,708,189	1,708,189	1,420,900
Real estate construction | 30-59 Days Past Due
Summarized details of Loans
Total Past Due	373	373	64
Real estate construction | 60-89 Days Past Due
Summarized details of Loans
Total Past Due	12	12	33
Real estate construction | 90 Days or More Past Due
Summarized details of Loans
Total Past Due	0	0	0
Commercial real estate lending
Summarized details of Loans
Current(a)	5,856,379	5,856,379	5,208,606
Nonaccrual(b)(c)	11,675	11,675	4,902
Loans and Leases Receivable, Net of Deferred Income, Total	5,882,314	5,882,314	5,215,417
Commercial real estate lending | 30-59 Days Past Due
Summarized details of Loans
Total Past Due	3,259	3,259	1,876
Commercial real estate lending | 60-89 Days Past Due
Summarized details of Loans
Total Past Due	11,001	11,001	33
Commercial real estate lending | 90 Days or More Past Due
Summarized details of Loans
Total Past Due	0	0	0
Total commercial
Summarized details of Loans
Current(a)	15,668,035	15,668,035	13,425,552
Nonaccrual(b)(c)	93,846	93,846	51,282
Loans and Leases Receivable, Net of Deferred Income, Total	15,777,441	15,777,441	13,481,275
Total commercial | 30-59 Days Past Due
Summarized details of Loans
Total Past Due	3,732	3,732	3,821
Total commercial | 60-89 Days Past Due
Summarized details of Loans
Total Past Due	11,443	11,443	278
Total commercial | 90 Days or More Past Due
Summarized details of Loans
Total Past Due	385	385	342
Residential mortgage
Summarized details of Loans
Current(a)	7,863,839	7,863,839	8,069,863
Nonaccrual(b)(c)	66,656	66,656	57,844
Loans and Leases Receivable, Net of Deferred Income, Total	7,933,518	7,933,518	8,136,980
Residential mortgage | 30-59 Days Past Due
Summarized details of Loans
Total Past Due	2,789	2,789	8,749
Residential mortgage | 60-89 Days Past Due
Summarized details of Loans
Total Past Due	233	233	525
Residential mortgage | 90 Days or More Past Due
Summarized details of Loans
Total Past Due	0	0	0
Home equity
Summarized details of Loans
Current(a)	781,735	781,735	837,274
Nonaccrual(b)(c)	10,829	10,829	9,104
Loans and Leases Receivable, Net of Deferred Income, Total	795,671	795,671	852,025
Home equity | 30-59 Days Past Due
Summarized details of Loans
Total Past Due	2,259	2,259	4,483
Home equity | 60-89 Days Past Due
Summarized details of Loans
Total Past Due	849	849	1,164
Home equity | 90 Days or More Past Due
Summarized details of Loans
Total Past Due	0	0	0
Other consumer
Summarized details of Loans
Current(a)	323,201	323,201	347,007
Nonaccrual(b)(c)	276	276	152
Loans and Leases Receivable, Net of Deferred Income, Total	326,040	326,040	351,159
Other consumer | 30-59 Days Past Due
Summarized details of Loans
Total Past Due	883	883	1,135
Other consumer | 60-89 Days Past Due
Summarized details of Loans
Total Past Due	599	599	949
Other consumer | 90 Days or More Past Due
Summarized details of Loans
Total Past Due	1,081	1,081	1,917
Total consumer
Summarized details of Loans
Current(a)	8,968,775	8,968,775	9,254,144
Nonaccrual(b)(c)	77,761	77,761	67,099
Loans and Leases Receivable, Net of Deferred Income, Total	9,055,230	9,055,230	9,340,164
Total consumer | 30-59 Days Past Due
Summarized details of Loans
Total Past Due	5,932	5,932	14,366
Total consumer | 60-89 Days Past Due
Summarized details of Loans
Total Past Due	1,681	1,681	2,638
Total consumer | 90 Days or More Past Due
Summarized details of Loans
Total Past Due	$ 1,081	$ 1,081	$ 1,917

Loans, Impaired Loans Recorded

Loans, Impaired Loans Recorded Investment, Unpaid Principal Balance, Related Allowance, Average Recorded Investment, and Interest Income Recognized (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2019USD ($)
Loan and Lease Receivables, Impaired [Abstract]
Recorded Investment	$ 110,043
Unpaid Principal Balance	148,020
Related Allowance	16,165
Average Recorded Investment	113,697
Interest Income Recognized	$ 3,628
Net Recorded Investment of the Impaired Loans	63.00%
Bank Mutual
Loan and Lease Receivables, Impaired [Abstract]
Purchased credit-impaired loans	$ 2,000
Loans with a related allowance
Loan and Lease Receivables, Impaired [Abstract]
Recorded Investment	76,102
Unpaid Principal Balance	95,033
Related Allowance	16,165
Average Recorded Investment	77,235
Interest Income Recognized	3,012
Loans with no related allowance
Loan and Lease Receivables, Impaired [Abstract]
Recorded Investment	33,941
Unpaid Principal Balance	52,987
Related Allowance	0
Average Recorded Investment	36,462
Interest Income Recognized	616
Commercial and industrial
Loan and Lease Receivables, Impaired [Abstract]
Recorded Investment	62,035
Unpaid Principal Balance	96,784
Related Allowance	12,010
Average Recorded Investment	65,792
Interest Income Recognized	1,895
Commercial and industrial | Loans with a related allowance
Loan and Lease Receivables, Impaired [Abstract]
Recorded Investment	47,249
Unpaid Principal Balance	63,346
Related Allowance	12,010
Average Recorded Investment	45,290
Interest Income Recognized	1,832
Commercial and industrial | Loans with no related allowance
Loan and Lease Receivables, Impaired [Abstract]
Recorded Investment	14,787
Unpaid Principal Balance	33,438
Related Allowance	0
Average Recorded Investment	20,502
Interest Income Recognized	63
Commercial real estate — owner occupied
Loan and Lease Receivables, Impaired [Abstract]
Recorded Investment	1,676
Unpaid Principal Balance	1,682
Related Allowance	19
Average Recorded Investment	1,774
Interest Income Recognized	88
Commercial real estate — owner occupied | Loans with a related allowance
Loan and Lease Receivables, Impaired [Abstract]
Recorded Investment	1,676
Unpaid Principal Balance	1,682
Related Allowance	19
Average Recorded Investment	1,774
Interest Income Recognized	88
Commercial real estate — owner occupied | Loans with no related allowance
Loan and Lease Receivables, Impaired [Abstract]
Recorded Investment	0
Unpaid Principal Balance	0
Related Allowance	0
Average Recorded Investment	0
Interest Income Recognized	0
Commercial and business lending
Loan and Lease Receivables, Impaired [Abstract]
Recorded Investment	63,711
Unpaid Principal Balance	98,466
Related Allowance	12,029
Average Recorded Investment	67,566
Interest Income Recognized	1,982
Commercial and business lending | Loans with a related allowance
Loan and Lease Receivables, Impaired [Abstract]
Recorded Investment	48,924
Unpaid Principal Balance	65,028
Related Allowance	12,029
Average Recorded Investment	47,064
Interest Income Recognized	1,919
Commercial and business lending | Loans with no related allowance
Loan and Lease Receivables, Impaired [Abstract]
Recorded Investment	14,787
Unpaid Principal Balance	33,438
Related Allowance	0
Average Recorded Investment	20,502
Interest Income Recognized	63
Commercial real estate — investor
Loan and Lease Receivables, Impaired [Abstract]
Recorded Investment	4,633
Unpaid Principal Balance	5,808
Related Allowance	15
Average Recorded Investment	4,931
Interest Income Recognized	174
Commercial real estate — investor | Loans with a related allowance
Loan and Lease Receivables, Impaired [Abstract]
Recorded Investment	928
Unpaid Principal Balance	2,104
Related Allowance	15
Average Recorded Investment	950
Interest Income Recognized	15
Commercial real estate — investor | Loans with no related allowance
Loan and Lease Receivables, Impaired [Abstract]
Recorded Investment	3,705
Unpaid Principal Balance	3,705
Related Allowance	0
Average Recorded Investment	3,980
Interest Income Recognized	159
Real estate construction
Loan and Lease Receivables, Impaired [Abstract]
Recorded Investment	477
Unpaid Principal Balance	559
Related Allowance	67
Average Recorded Investment	494
Interest Income Recognized	30
Real estate construction | Loans with a related allowance
Loan and Lease Receivables, Impaired [Abstract]
Recorded Investment	477
Unpaid Principal Balance	559
Related Allowance	67
Average Recorded Investment	494
Interest Income Recognized	30
Real estate construction | Loans with no related allowance
Loan and Lease Receivables, Impaired [Abstract]
Recorded Investment	0
Unpaid Principal Balance	0
Related Allowance	0
Average Recorded Investment	0
Interest Income Recognized	0
Commercial real estate lending
Loan and Lease Receivables, Impaired [Abstract]
Recorded Investment	5,110
Unpaid Principal Balance	6,367
Related Allowance	82
Average Recorded Investment	5,425
Interest Income Recognized	204
Commercial real estate lending | Loans with a related allowance
Loan and Lease Receivables, Impaired [Abstract]
Recorded Investment	1,405
Unpaid Principal Balance	2,663
Related Allowance	82
Average Recorded Investment	1,445
Interest Income Recognized	45
Commercial real estate lending | Loans with no related allowance
Loan and Lease Receivables, Impaired [Abstract]
Recorded Investment	3,705
Unpaid Principal Balance	3,705
Related Allowance	0
Average Recorded Investment	3,980
Interest Income Recognized	159
Total commercial
Loan and Lease Receivables, Impaired [Abstract]
Recorded Investment	68,820
Unpaid Principal Balance	104,833
Related Allowance	12,111
Average Recorded Investment	72,991
Interest Income Recognized	2,186
Total commercial | Loans with a related allowance
Loan and Lease Receivables, Impaired [Abstract]
Recorded Investment	50,329
Unpaid Principal Balance	67,691
Related Allowance	12,111
Average Recorded Investment	48,509
Interest Income Recognized	1,965
Total commercial | Loans with no related allowance
Loan and Lease Receivables, Impaired [Abstract]
Recorded Investment	18,491
Unpaid Principal Balance	37,142
Related Allowance	0
Average Recorded Investment	24,482
Interest Income Recognized	222
Residential mortgage
Loan and Lease Receivables, Impaired [Abstract]
Recorded Investment	35,554
Unpaid Principal Balance	37,087
Related Allowance	2,740
Average Recorded Investment	34,683
Interest Income Recognized	1,229
Residential mortgage | Loans with a related allowance
Loan and Lease Receivables, Impaired [Abstract]
Recorded Investment	21,450
Unpaid Principal Balance	22,625
Related Allowance	2,740
Average Recorded Investment	23,721
Interest Income Recognized	856
Residential mortgage | Loans with no related allowance
Loan and Lease Receivables, Impaired [Abstract]
Recorded Investment	14,104
Unpaid Principal Balance	14,461
Related Allowance	0
Average Recorded Investment	10,962
Interest Income Recognized	373
Home equity
Loan and Lease Receivables, Impaired [Abstract]
Recorded Investment	4,422
Unpaid Principal Balance	4,851
Related Allowance	1,190
Average Recorded Investment	4,773
Interest Income Recognized	211
Home equity | Loans with a related allowance
Loan and Lease Receivables, Impaired [Abstract]
Recorded Investment	3,076
Unpaid Principal Balance	3,468
Related Allowance	1,190
Average Recorded Investment	3,756
Interest Income Recognized	191
Home equity | Loans with no related allowance
Loan and Lease Receivables, Impaired [Abstract]
Recorded Investment	1,346
Unpaid Principal Balance	1,383
Related Allowance	0
Average Recorded Investment	1,017
Interest Income Recognized	21
Other consumer
Loan and Lease Receivables, Impaired [Abstract]
Recorded Investment	1,247
Unpaid Principal Balance	1,249
Related Allowance	125
Average Recorded Investment	1,250
Interest Income Recognized	1
Other consumer | Loans with a related allowance
Loan and Lease Receivables, Impaired [Abstract]
Recorded Investment	1,247
Unpaid Principal Balance	1,249
Related Allowance	125
Average Recorded Investment	1,250
Interest Income Recognized	1
Other consumer | Loans with no related allowance
Loan and Lease Receivables, Impaired [Abstract]
Recorded Investment	0
Unpaid Principal Balance	0
Related Allowance	0
Average Recorded Investment	0
Interest Income Recognized	0
Total consumer
Loan and Lease Receivables, Impaired [Abstract]
Recorded Investment	41,223
Unpaid Principal Balance	43,187
Related Allowance	4,055
Average Recorded Investment	40,706
Interest Income Recognized	1,441
Total consumer | Loans with a related allowance
Loan and Lease Receivables, Impaired [Abstract]
Recorded Investment	25,773
Unpaid Principal Balance	27,342
Related Allowance	4,055
Average Recorded Investment	28,726
Interest Income Recognized	1,047
Total consumer | Loans with no related allowance
Loan and Lease Receivables, Impaired [Abstract]
Recorded Investment	15,450
Unpaid Principal Balance	15,845
Related Allowance	0
Average Recorded Investment	11,979
Interest Income Recognized	$ 394

Loans, Troubled Debt Restructur

Loans, Troubled Debt Restructurings Performing and Nonaccrual (Details) - USD ($) $ in Thousands	Jun. 30, 2020	Dec. 31, 2019
Financing Receivable, Troubled Debt Restructuring [Line Items]
Performing Restructured Loans	$ 25,303	$ 26,041
Nonaccrual Restructured Loans(a)	25,362	22,494
PPP
Financing Receivable, Troubled Debt Restructuring [Line Items]
Performing Restructured Loans	0	0
Nonaccrual Restructured Loans(a)	0	0
Commercial and industrial
Financing Receivable, Troubled Debt Restructuring [Line Items]
Performing Restructured Loans	16,321	16,678
Nonaccrual Restructured Loans(a)	7,968	7,376
Commercial real estate — owner occupied
Financing Receivable, Troubled Debt Restructuring [Line Items]
Performing Restructured Loans	1,441	1,676
Nonaccrual Restructured Loans(a)	0	0
Commercial real estate — investor
Financing Receivable, Troubled Debt Restructuring [Line Items]
Performing Restructured Loans	114	293
Nonaccrual Restructured Loans(a)	395	0
Real estate construction
Financing Receivable, Troubled Debt Restructuring [Line Items]
Performing Restructured Loans	313	298
Nonaccrual Restructured Loans(a)	173	179
Residential mortgage
Financing Receivable, Troubled Debt Restructuring [Line Items]
Performing Restructured Loans	4,178	3,955
Nonaccrual Restructured Loans(a)	15,401	13,035
Home equity
Financing Receivable, Troubled Debt Restructuring [Line Items]
Performing Restructured Loans	1,717	1,896
Nonaccrual Restructured Loans(a)	1,424	1,904
Other consumer
Financing Receivable, Troubled Debt Restructuring [Line Items]
Performing Restructured Loans	1,219	1,246
Nonaccrual Restructured Loans(a)	$ 0	$ 1

Loans, Loans Modified in a Trou

Loans, Loans Modified in a Troubled Debt Restructuring (Details) $ in Thousands	6 Months Ended
	Jun. 30, 2020USD ($)loan	Jun. 30, 2019USD ($)loan
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Loans | loan	44	58
Recorded Investment(a)	$ 7,531	$ 6,370
Unpaid Principal Balance(b)	$ 8,986	$ 6,394
PPP
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Loans | loan	0	0
Recorded Investment(a)	$ 0	$ 0
Unpaid Principal Balance(b)	$ 0	$ 0
Commercial and industrial
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Loans | loan	2	1
Recorded Investment(a)	$ 1,112	$ 196
Unpaid Principal Balance(b)	$ 1,140	$ 196
Commercial real estate — owner occupied
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Loans | loan	1	0
Recorded Investment(a)	$ 288	$ 0
Unpaid Principal Balance(b)	$ 319	$ 0
Commercial real estate — investor
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Loans | loan	1	0
Recorded Investment(a)	$ 395	$ 0
Unpaid Principal Balance(b)	$ 1,705	$ 0
Real estate construction
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Loans | loan	1	0
Recorded Investment(a)	$ 102	$ 0
Unpaid Principal Balance(b)	$ 102	$ 0
Residential mortgage
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Loans | loan	24	38
Recorded Investment(a)	$ 5,163	$ 5,665
Unpaid Principal Balance(b)	$ 5,237	$ 5,682
Home equity
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Loans | loan	15	18
Recorded Investment(a)	$ 471	$ 499
Unpaid Principal Balance(b)	$ 483	$ 506
Other consumer
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Loans | loan	0	1
Recorded Investment(a)	$ 0	$ 10
Unpaid Principal Balance(b)	$ 0	$ 10

Loans, Troubled Debt Restruct_2

Loans, Troubled Debt Restructurings Subsequent Default (Details) $ in Thousands	6 Months Ended
	Jun. 30, 2020USD ($)loan	Jun. 30, 2019USD ($)loan
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Loans | loan	9	30
Recorded Investment | $	$ 1,244	$ 3,290
Residential mortgage
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Loans | loan	5	16
Recorded Investment | $	$ 1,036	$ 2,813
Home equity
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Loans | loan	4	14
Recorded Investment | $	$ 208	$ 477

Loans, Changes in the Allowance

Loans, Changes in the Allowance for Loan Losses by Portfolio Segment (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended		12 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019	Dec. 31, 2019	Jun. 30, 2020	Jan. 01, 2020	Dec. 31, 2019
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Balance at beginning of period			$ 201,371
Allowance for Loan Losses			201,371		$ 201,371			$ 201,371
Net Charge offs					(55,152)
Balance at end of period					201,371
Off-Balance Sheet, Credit Loss, Liability [Roll Forward]
Balance at beginning of period			21,907
Allowance for Unfunded Commitments	$ 64,776		64,776		21,907	$ 64,776		21,907
Provision for loan losses			24,000
Balance at end of period	64,776		64,776		21,907
Allowance for credit losses on loans
Net Charge offs					(55,152)
Provision for credit losses	61,000	$ 8,000	114,001	$ 14,000
Allowance for Loan and Lease Losses [Roll Forward]
Balance at beginning of period			201,371	238,023	238,023
Charge offs					(74,313)
Recoveries					19,161
Net Charge offs					(55,152)
Provision for loan losses					18,500
Balance at end of period	363,803		363,803		201,371
Financing Receivable, Allowance for Credit Loss, Additional Information [Abstract]
Individually evaluated								16,165
Collectively evaluated								185,205
Total allowance for loan losses	363,803		201,371	238,023	238,023	363,803		201,371
Loans [Abstract]
Individually evaluated								110,043
Collectively evaluated								22,709,845
Financing Receivable Acquired and Accounted under Modification of Impaired Loans								1,552
Loans and Leases Receivable, Net of Deferred Income, Total						24,832,671		22,821,440
Cumulative Effect, Period Of Adoption, Adjustment
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Allowance for Loan Losses							$ 131,147
Cumulative Effect, Period Of Adoption, Adjusted Balance
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Allowance for Loan Losses							354,425
Off-Balance Sheet, Credit Loss, Liability [Roll Forward]
Allowance for Unfunded Commitments							40,597
First Staunton Bancshares [Member]
Off-Balance Sheet, Credit Loss, Liability [Roll Forward]
Provision for loan losses			179
Accounting Standards Update 2016-13 | Cumulative Effect, Period Of Adoption, Adjustment
Off-Balance Sheet, Credit Loss, Liability [Roll Forward]
Allowance for Unfunded Commitments							18,690
PPP
Loans [Abstract]
Loans and Leases Receivable, Net of Deferred Income, Total						1,012,033		0
Commercial and industrial
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Net Charge offs					(51,441)
Allowance for credit losses on loans
Net Charge offs					(51,441)
Allowance for Loan and Lease Losses [Roll Forward]
Balance at beginning of period			91,133	108,835	108,835
Charge offs					(63,315)
Recoveries					11,875
Net Charge offs					(51,441)
Provision for loan losses					33,738
Balance at end of period					91,133
Financing Receivable, Allowance for Credit Loss, Additional Information [Abstract]
Individually evaluated								12,010
Collectively evaluated								79,123
Total allowance for loan losses			91,133	108,835	91,133			91,133
Loans [Abstract]
Individually evaluated								62,035
Collectively evaluated								7,292,217
Financing Receivable Acquired and Accounted under Modification of Impaired Loans								342
Loans and Leases Receivable, Net of Deferred Income, Total						7,968,709		7,354,594
Commercial real estate — owner occupied
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Net Charge offs					2,573
Allowance for credit losses on loans
Net Charge offs					2,573
Allowance for Loan and Lease Losses [Roll Forward]
Balance at beginning of period			10,284	9,255	9,255
Charge offs					(222)
Recoveries					2,795
Net Charge offs					2,573
Provision for loan losses					(1,543)
Balance at end of period					10,284
Financing Receivable, Allowance for Credit Loss, Additional Information [Abstract]
Individually evaluated								19
Collectively evaluated								10,265
Total allowance for loan losses			10,284	9,255	10,284			10,284
Loans [Abstract]
Individually evaluated								1,676
Collectively evaluated								909,010
Financing Receivable Acquired and Accounted under Modification of Impaired Loans								579
Loans and Leases Receivable, Net of Deferred Income, Total						914,385		911,265
Commercial and business lending
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Net Charge offs					(48,868)
Allowance for credit losses on loans
Net Charge offs					(48,868)
Allowance for Loan and Lease Losses [Roll Forward]
Balance at beginning of period			101,417	118,090	118,090
Charge offs					(63,537)
Recoveries					14,670
Net Charge offs					(48,868)
Provision for loan losses					32,195
Balance at end of period					101,417
Financing Receivable, Allowance for Credit Loss, Additional Information [Abstract]
Individually evaluated								12,029
Collectively evaluated								89,388
Total allowance for loan losses			101,417	118,090	101,417			101,417
Loans [Abstract]
Individually evaluated								63,711
Collectively evaluated								8,201,227
Financing Receivable Acquired and Accounted under Modification of Impaired Loans								921
Loans and Leases Receivable, Net of Deferred Income, Total						9,895,127		8,265,858
Commercial real estate — investor
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Net Charge offs					31
Allowance for credit losses on loans
Net Charge offs					31
Allowance for Loan and Lease Losses [Roll Forward]
Balance at beginning of period			40,514	40,844	40,844
Charge offs					0
Recoveries					31
Net Charge offs					31
Provision for loan losses					(361)
Balance at end of period					40,514
Financing Receivable, Allowance for Credit Loss, Additional Information [Abstract]
Individually evaluated								15
Collectively evaluated								40,498
Total allowance for loan losses			40,514	40,844	40,514			40,514
Loans [Abstract]
Individually evaluated								4,633
Collectively evaluated								3,789,755
Financing Receivable Acquired and Accounted under Modification of Impaired Loans								129
Loans and Leases Receivable, Net of Deferred Income, Total						4,174,125		3,794,517
Real estate construction
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Net Charge offs					243
Allowance for credit losses on loans
Net Charge offs					243
Allowance for Loan and Lease Losses [Roll Forward]
Balance at beginning of period			24,915	28,240	28,240
Charge offs					(60)
Recoveries					302
Net Charge offs					243
Provision for loan losses					(3,568)
Balance at end of period					24,915
Financing Receivable, Allowance for Credit Loss, Additional Information [Abstract]
Individually evaluated								67
Collectively evaluated								24,848
Total allowance for loan losses			24,915	28,240	24,915			24,915
Loans [Abstract]
Individually evaluated								477
Collectively evaluated								1,420,416
Financing Receivable Acquired and Accounted under Modification of Impaired Loans								7
Loans and Leases Receivable, Net of Deferred Income, Total						1,708,189		1,420,900
Commercial real estate lending
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Net Charge offs					274
Allowance for credit losses on loans
Net Charge offs					274
Allowance for Loan and Lease Losses [Roll Forward]
Balance at beginning of period			65,429	69,084	69,084
Charge offs					(60)
Recoveries					333
Net Charge offs					274
Provision for loan losses					(3,929)
Balance at end of period					65,429
Financing Receivable, Allowance for Credit Loss, Additional Information [Abstract]
Individually evaluated								82
Collectively evaluated								65,346
Total allowance for loan losses			65,429	69,084	65,429			65,429
Loans [Abstract]
Individually evaluated								5,110
Collectively evaluated								5,210,171
Financing Receivable Acquired and Accounted under Modification of Impaired Loans								136
Loans and Leases Receivable, Net of Deferred Income, Total						5,882,314		5,215,417
Total commercial
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Net Charge offs					(48,594)
Allowance for credit losses on loans
Net Charge offs					(48,594)
Allowance for Loan and Lease Losses [Roll Forward]
Balance at beginning of period			166,846	187,174	187,174
Charge offs					(63,597)
Recoveries					15,003
Net Charge offs					(48,594)
Provision for loan losses					28,266
Balance at end of period					166,846
Financing Receivable, Allowance for Credit Loss, Additional Information [Abstract]
Individually evaluated								12,111
Collectively evaluated								154,734
Total allowance for loan losses			166,846	187,174	166,846			166,846
Loans [Abstract]
Individually evaluated								68,821
Collectively evaluated								13,411,398
Financing Receivable Acquired and Accounted under Modification of Impaired Loans								1,057
Loans and Leases Receivable, Net of Deferred Income, Total						15,777,441		13,481,275
Residential mortgage
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Net Charge offs					(2,630)
Allowance for credit losses on loans
Net Charge offs					(2,630)
Allowance for Loan and Lease Losses [Roll Forward]
Balance at beginning of period			16,960	25,595	25,595
Charge offs					(3,322)
Recoveries					692
Net Charge offs					(2,630)
Provision for loan losses					(6,005)
Balance at end of period					16,960
Financing Receivable, Allowance for Credit Loss, Additional Information [Abstract]
Individually evaluated								2,740
Collectively evaluated								14,220
Total allowance for loan losses			16,960	25,595	16,960			16,960
Loans [Abstract]
Individually evaluated								35,554
Collectively evaluated								8,100,958
Financing Receivable Acquired and Accounted under Modification of Impaired Loans								469
Loans and Leases Receivable, Net of Deferred Income, Total								8,136,980
Home equity
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Net Charge offs					753
Allowance for credit losses on loans
Net Charge offs					753
Allowance for Loan and Lease Losses [Roll Forward]
Balance at beginning of period			10,926	19,266	19,266
Charge offs					(1,846)
Recoveries					2,599
Net Charge offs					753
Provision for loan losses					(9,093)
Balance at end of period					10,926
Financing Receivable, Allowance for Credit Loss, Additional Information [Abstract]
Individually evaluated								1,190
Collectively evaluated								9,737
Total allowance for loan losses			10,926	19,266	10,926			10,926
Loans [Abstract]
Individually evaluated								4,422
Collectively evaluated								847,577
Financing Receivable Acquired and Accounted under Modification of Impaired Loans								26
Loans and Leases Receivable, Net of Deferred Income, Total						795,671		852,025
Other consumer
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Net Charge offs					(4,681)
Allowance for credit losses on loans
Net Charge offs					(4,681)
Allowance for Loan and Lease Losses [Roll Forward]
Balance at beginning of period			6,639	5,988	5,988
Charge offs					(5,548)
Recoveries					868
Net Charge offs					(4,681)
Provision for loan losses					5,332
Balance at end of period					6,639
Financing Receivable, Allowance for Credit Loss, Additional Information [Abstract]
Individually evaluated								125
Collectively evaluated								6,514
Total allowance for loan losses			6,639	5,988	6,639			6,639
Loans [Abstract]
Individually evaluated								1,247
Collectively evaluated								349,912
Financing Receivable Acquired and Accounted under Modification of Impaired Loans								0
Loans and Leases Receivable, Net of Deferred Income, Total								351,159
Total consumer
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Net Charge offs					(6,558)
Allowance for credit losses on loans
Net Charge offs					(6,558)
Allowance for Loan and Lease Losses [Roll Forward]
Balance at beginning of period			34,525	50,849	50,849
Charge offs					(10,716)
Recoveries					4,159
Net Charge offs					(6,558)
Provision for loan losses					(9,766)
Balance at end of period					34,525
Financing Receivable, Allowance for Credit Loss, Additional Information [Abstract]
Individually evaluated								4,055
Collectively evaluated								30,471
Total allowance for loan losses			34,525	$ 50,849	34,525			34,525
Loans [Abstract]
Individually evaluated								41,223
Collectively evaluated								9,298,447
Financing Receivable Acquired and Accounted under Modification of Impaired Loans								495
Loans and Leases Receivable, Net of Deferred Income, Total						9,055,230		9,340,164
Allowance for Loan Losses [Member]
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Balance at beginning of period			201,371
Allowance for Loan Losses	363,803		363,803		201,371	363,803		201,371
Charge offs			(47,659)
Recoveries			4,129
Net Charge offs			(43,530)
Gross up of allowance for PCD loans at acquisition			3,504
Provision for loan losses			87,457
Balance at end of period	363,803		363,803		201,371
Allowance for credit losses on loans
Charge offs			(47,659)
Recoveries			4,129
Net Charge offs			(43,530)
Gross up of allowance for PCD loans at acquisition			3,504
Allowance for Loan and Lease Losses [Roll Forward]
Net Charge offs			(43,530)
Allowance for Loan Losses [Member] | Cumulative Effect, Period Of Adoption, Adjusted Balance
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Allowance for Loan Losses							313,828
Allowance for Loan Losses [Member] | First Staunton Bancshares [Member]
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Provision for loan losses			2,543
Allowance for Loan Losses [Member] | Accounting Standards Update 2016-13 | Cumulative Effect, Period Of Adoption, Adjustment
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Allowance for Loan Losses							112,457
Allowance for Loan Losses [Member] | PPP
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Balance at beginning of period			0
Allowance for Loan Losses	808		808		0	808		0
Charge offs			0
Recoveries			0
Net Charge offs			0
Gross up of allowance for PCD loans at acquisition			0
Provision for loan losses			808
Balance at end of period	808		808		0
Allowance for credit losses on loans
Charge offs			0
Recoveries			0
Net Charge offs			0
Gross up of allowance for PCD loans at acquisition			0
Allowance for Loan and Lease Losses [Roll Forward]
Net Charge offs			0
Allowance for Loan Losses [Member] | PPP | Cumulative Effect, Period Of Adoption, Adjusted Balance
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Allowance for Loan Losses							0
Allowance for Loan Losses [Member] | PPP | First Staunton Bancshares [Member]
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Provision for loan losses			0
Allowance for Loan Losses [Member] | PPP | Accounting Standards Update 2016-13 | Cumulative Effect, Period Of Adoption, Adjustment
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Allowance for Loan Losses							0
Allowance for Loan Losses [Member] | Commercial and industrial
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Balance at beginning of period			91,133
Allowance for Loan Losses	175,553		175,553		91,133	175,553		91,133
Charge offs			(42,183)
Recoveries			2,215
Net Charge offs			(39,968)
Gross up of allowance for PCD loans at acquisition			293
Provision for loan losses			70,767
Balance at end of period	175,553		175,553		91,133
Allowance for credit losses on loans
Charge offs			(42,183)
Recoveries			2,215
Net Charge offs			(39,968)
Gross up of allowance for PCD loans at acquisition			293
Allowance for Loan and Lease Losses [Roll Forward]
Net Charge offs			(39,968)
Allowance for Loan Losses [Member] | Commercial and industrial | Cumulative Effect, Period Of Adoption, Adjusted Balance
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Allowance for Loan Losses							144,052
Allowance for Loan Losses [Member] | Commercial and industrial | First Staunton Bancshares [Member]
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Provision for loan losses			408
Allowance for Loan Losses [Member] | Commercial and industrial | Accounting Standards Update 2016-13 | Cumulative Effect, Period Of Adoption, Adjustment
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Allowance for Loan Losses							52,919
Allowance for Loan Losses [Member] | Commercial real estate — owner occupied
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Balance at beginning of period			10,284
Allowance for Loan Losses	10,315		10,315		10,284	10,315		10,284
Charge offs			0
Recoveries			1
Net Charge offs			1
Gross up of allowance for PCD loans at acquisition			890
Provision for loan losses			736
Balance at end of period	10,315		10,315		10,284
Allowance for credit losses on loans
Charge offs			0
Recoveries			1
Net Charge offs			1
Gross up of allowance for PCD loans at acquisition			890
Allowance for Loan and Lease Losses [Roll Forward]
Net Charge offs			1
Allowance for Loan Losses [Member] | Commercial real estate — owner occupied | Cumulative Effect, Period Of Adoption, Adjusted Balance
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Allowance for Loan Losses							8,433
Allowance for Loan Losses [Member] | Commercial real estate — owner occupied | First Staunton Bancshares [Member]
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Provision for loan losses			255
Allowance for Loan Losses [Member] | Commercial real estate — owner occupied | Accounting Standards Update 2016-13 | Cumulative Effect, Period Of Adoption, Adjustment
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Allowance for Loan Losses							(1,851)
Allowance for Loan Losses [Member] | Commercial and business lending
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Balance at beginning of period			101,417
Allowance for Loan Losses	186,676		186,676		101,417	186,676		101,417
Charge offs			(42,183)
Recoveries			2,216
Net Charge offs			(39,967)
Gross up of allowance for PCD loans at acquisition			1,183
Provision for loan losses			72,311
Balance at end of period	186,676		186,676		101,417
Allowance for credit losses on loans
Charge offs			(42,183)
Recoveries			2,216
Net Charge offs			(39,967)
Gross up of allowance for PCD loans at acquisition			1,183
Allowance for Loan and Lease Losses [Roll Forward]
Net Charge offs			(39,967)
Allowance for Loan Losses [Member] | Commercial and business lending | Cumulative Effect, Period Of Adoption, Adjusted Balance
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Allowance for Loan Losses							152,485
Allowance for Loan Losses [Member] | Commercial and business lending | First Staunton Bancshares [Member]
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Provision for loan losses			663
Allowance for Loan Losses [Member] | Commercial and business lending | Accounting Standards Update 2016-13 | Cumulative Effect, Period Of Adoption, Adjustment
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Allowance for Loan Losses							51,068
Allowance for Loan Losses [Member] | Commercial real estate — investor
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Balance at beginning of period			40,514
Allowance for Loan Losses	58,520		58,520		40,514	58,520		40,514
Charge offs			(140)
Recoveries			168
Net Charge offs			28
Gross up of allowance for PCD loans at acquisition			753
Provision for loan losses			14,713
Balance at end of period	58,520		58,520		40,514
Allowance for credit losses on loans
Charge offs			(140)
Recoveries			168
Net Charge offs			28
Gross up of allowance for PCD loans at acquisition			753
Allowance for Loan and Lease Losses [Roll Forward]
Net Charge offs			28
Allowance for Loan Losses [Member] | Commercial real estate — investor | Cumulative Effect, Period Of Adoption, Adjusted Balance
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Allowance for Loan Losses							42,555
Allowance for Loan Losses [Member] | Commercial real estate — investor | First Staunton Bancshares [Member]
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Provision for loan losses			472
Allowance for Loan Losses [Member] | Commercial real estate — investor | Accounting Standards Update 2016-13 | Cumulative Effect, Period Of Adoption, Adjustment
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Allowance for Loan Losses							2,041
Allowance for Loan Losses [Member] | Real estate construction
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Balance at beginning of period			24,915
Allowance for Loan Losses	38,393		38,393		24,915	38,393		24,915
Charge offs			(19)
Recoveries			27
Net Charge offs			8
Gross up of allowance for PCD loans at acquisition			435
Provision for loan losses			5,076
Balance at end of period	38,393		38,393		24,915
Allowance for credit losses on loans
Charge offs			(19)
Recoveries			27
Net Charge offs			8
Gross up of allowance for PCD loans at acquisition			435
Allowance for Loan and Lease Losses [Roll Forward]
Net Charge offs			8
Allowance for Loan Losses [Member] | Real estate construction | Cumulative Effect, Period Of Adoption, Adjusted Balance
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Allowance for Loan Losses							32,382
Allowance for Loan Losses [Member] | Real estate construction | First Staunton Bancshares [Member]
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Provision for loan losses			492
Allowance for Loan Losses [Member] | Real estate construction | Accounting Standards Update 2016-13 | Cumulative Effect, Period Of Adoption, Adjustment
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Allowance for Loan Losses							7,467
Allowance for Loan Losses [Member] | Commercial real estate lending
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Balance at beginning of period			65,428
Allowance for Loan Losses	96,913		96,913		65,428	96,913		65,428
Charge offs			(159)
Recoveries			195
Net Charge offs			36
Gross up of allowance for PCD loans at acquisition			1,188
Provision for loan losses			19,789
Balance at end of period	96,913		96,913		65,428
Allowance for credit losses on loans
Charge offs			(159)
Recoveries			195
Net Charge offs			36
Gross up of allowance for PCD loans at acquisition			1,188
Allowance for Loan and Lease Losses [Roll Forward]
Net Charge offs			36
Allowance for Loan Losses [Member] | Commercial real estate lending | Cumulative Effect, Period Of Adoption, Adjusted Balance
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Allowance for Loan Losses							74,937
Allowance for Loan Losses [Member] | Commercial real estate lending | First Staunton Bancshares [Member]
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Provision for loan losses			964
Allowance for Loan Losses [Member] | Commercial real estate lending | Accounting Standards Update 2016-13 | Cumulative Effect, Period Of Adoption, Adjustment
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Allowance for Loan Losses							9,508
Allowance for Loan Losses [Member] | Total commercial
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Balance at beginning of period			166,846
Allowance for Loan Losses	283,590		283,590		166,846	283,590		166,846
Charge offs			(42,342)
Recoveries			2,412
Net Charge offs			(39,931)
Gross up of allowance for PCD loans at acquisition			2,371
Provision for loan losses			92,101
Balance at end of period	283,590		283,590		166,846
Allowance for credit losses on loans
Charge offs			(42,342)
Recoveries			2,412
Net Charge offs			(39,931)
Gross up of allowance for PCD loans at acquisition			2,371
Allowance for Loan and Lease Losses [Roll Forward]
Net Charge offs			(39,931)
Allowance for Loan Losses [Member] | Total commercial | Cumulative Effect, Period Of Adoption, Adjusted Balance
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Allowance for Loan Losses							227,422
Allowance for Loan Losses [Member] | Total commercial | First Staunton Bancshares [Member]
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Provision for loan losses			1,627
Allowance for Loan Losses [Member] | Total commercial | Accounting Standards Update 2016-13 | Cumulative Effect, Period Of Adoption, Adjustment
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Allowance for Loan Losses							60,576
Allowance for Loan Losses [Member] | Residential mortgage
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Balance at beginning of period			16,960
Allowance for Loan Losses	43,825		43,825		16,960	43,825		16,960
Charge offs			(1,301)
Recoveries			174
Net Charge offs			(1,127)
Gross up of allowance for PCD loans at acquisition			651
Provision for loan losses			(6,276)
Balance at end of period	43,825		43,825		16,960
Allowance for credit losses on loans
Charge offs			(1,301)
Recoveries			174
Net Charge offs			(1,127)
Gross up of allowance for PCD loans at acquisition			651
Allowance for Loan and Lease Losses [Roll Forward]
Net Charge offs			(1,127)
Allowance for Loan Losses [Member] | Residential mortgage | Cumulative Effect, Period Of Adoption, Adjusted Balance
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Allowance for Loan Losses							50,175
Allowance for Loan Losses [Member] | Residential mortgage | First Staunton Bancshares [Member]
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Provision for loan losses			403
Allowance for Loan Losses [Member] | Residential mortgage | Accounting Standards Update 2016-13 | Cumulative Effect, Period Of Adoption, Adjustment
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Allowance for Loan Losses							33,215
Allowance for Loan Losses [Member] | Home equity
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Balance at beginning of period			10,926
Allowance for Loan Losses	21,462		21,462		10,926	21,462		10,926
Charge offs			(1,213)
Recoveries			981
Net Charge offs			(232)
Gross up of allowance for PCD loans at acquisition			422
Provision for loan losses			(1,677)
Balance at end of period	21,462		21,462		10,926
Allowance for credit losses on loans
Charge offs			(1,213)
Recoveries			981
Net Charge offs			(232)
Gross up of allowance for PCD loans at acquisition			422
Allowance for Loan and Lease Losses [Roll Forward]
Net Charge offs			(232)
Allowance for Loan Losses [Member] | Home equity | Cumulative Effect, Period Of Adoption, Adjusted Balance
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Allowance for Loan Losses							22,575
Allowance for Loan Losses [Member] | Home equity | First Staunton Bancshares [Member]
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Provision for loan losses			374
Allowance for Loan Losses [Member] | Home equity | Accounting Standards Update 2016-13 | Cumulative Effect, Period Of Adoption, Adjustment
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Allowance for Loan Losses							11,649
Allowance for Loan Losses [Member] | Other consumer
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Balance at beginning of period			6,639
Allowance for Loan Losses	14,926		14,926		6,639	14,926		6,639
Charge offs			(2,802)
Recoveries			562
Net Charge offs			(2,240)
Gross up of allowance for PCD loans at acquisition			61
Provision for loan losses			3,309
Balance at end of period	14,926		14,926		6,639
Allowance for credit losses on loans
Charge offs			(2,802)
Recoveries			562
Net Charge offs			(2,240)
Gross up of allowance for PCD loans at acquisition			61
Allowance for Loan and Lease Losses [Roll Forward]
Net Charge offs			(2,240)
Allowance for Loan Losses [Member] | Other consumer | Cumulative Effect, Period Of Adoption, Adjusted Balance
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Allowance for Loan Losses							13,655
Allowance for Loan Losses [Member] | Other consumer | First Staunton Bancshares [Member]
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Provision for loan losses			140
Allowance for Loan Losses [Member] | Other consumer | Accounting Standards Update 2016-13 | Cumulative Effect, Period Of Adoption, Adjustment
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Allowance for Loan Losses							7,016
Allowance for Loan Losses [Member] | Total consumer
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Balance at beginning of period			34,525
Allowance for Loan Losses	80,213		80,213		34,525	80,213		34,525
Charge offs			(5,316)
Recoveries			1,717
Net Charge offs			(3,599)
Gross up of allowance for PCD loans at acquisition			1,134
Provision for loan losses			(4,644)
Balance at end of period	80,213		80,213		34,525
Allowance for credit losses on loans
Charge offs			(5,316)
Recoveries			1,717
Net Charge offs			(3,599)
Gross up of allowance for PCD loans at acquisition			1,134
Allowance for Loan and Lease Losses [Roll Forward]
Net Charge offs			(3,599)
Allowance for Loan Losses [Member] | Total consumer | Cumulative Effect, Period Of Adoption, Adjusted Balance
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Allowance for Loan Losses							86,405
Allowance for Loan Losses [Member] | Total consumer | First Staunton Bancshares [Member]
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Provision for loan losses			917
Allowance for Loan Losses [Member] | Total consumer | Accounting Standards Update 2016-13 | Cumulative Effect, Period Of Adoption, Adjustment
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Allowance for Loan Losses							51,880
SEC Schedule, 12-09, Reserve, Off-balance Sheet Activity [Member]
Off-Balance Sheet, Credit Loss, Liability [Roll Forward]
Balance at beginning of period			21,907
Allowance for Unfunded Commitments	64,776		64,776		21,907	64,776		21,907
Provision for loan losses			24,000
Balance at end of period	64,776		64,776		21,907
SEC Schedule, 12-09, Reserve, Off-balance Sheet Activity [Member] | Cumulative Effect, Period Of Adoption, Adjusted Balance
Off-Balance Sheet, Credit Loss, Liability [Roll Forward]
Allowance for Unfunded Commitments							40,597
SEC Schedule, 12-09, Reserve, Off-balance Sheet Activity [Member] | First Staunton Bancshares [Member]
Off-Balance Sheet, Credit Loss, Liability [Roll Forward]
Provision for loan losses			179
SEC Schedule, 12-09, Reserve, Off-balance Sheet Activity [Member] | Accounting Standards Update 2016-13 | Cumulative Effect, Period Of Adoption, Adjustment
Off-Balance Sheet, Credit Loss, Liability [Roll Forward]
Allowance for Unfunded Commitments							18,690
SEC Schedule, 12-09, Reserve, Off-balance Sheet Activity [Member] | PPP
Off-Balance Sheet, Credit Loss, Liability [Roll Forward]
Balance at beginning of period			0
Allowance for Unfunded Commitments	0		0		0	0		0
Provision for loan losses			0
Balance at end of period	0		0		0
SEC Schedule, 12-09, Reserve, Off-balance Sheet Activity [Member] | PPP | Cumulative Effect, Period Of Adoption, Adjusted Balance
Off-Balance Sheet, Credit Loss, Liability [Roll Forward]
Allowance for Unfunded Commitments							0
SEC Schedule, 12-09, Reserve, Off-balance Sheet Activity [Member] | PPP | First Staunton Bancshares [Member]
Off-Balance Sheet, Credit Loss, Liability [Roll Forward]
Provision for loan losses			0
SEC Schedule, 12-09, Reserve, Off-balance Sheet Activity [Member] | PPP | Accounting Standards Update 2016-13 | Cumulative Effect, Period Of Adoption, Adjustment
Off-Balance Sheet, Credit Loss, Liability [Roll Forward]
Allowance for Unfunded Commitments							0
SEC Schedule, 12-09, Reserve, Off-balance Sheet Activity [Member] | Commercial and industrial
Off-Balance Sheet, Credit Loss, Liability [Roll Forward]
Balance at beginning of period			12,276
Allowance for Unfunded Commitments	19,601		19,601		12,276	19,601		12,276
Provision for loan losses			11,261
Balance at end of period	19,601		19,601		12,276
SEC Schedule, 12-09, Reserve, Off-balance Sheet Activity [Member] | Commercial and industrial | Cumulative Effect, Period Of Adoption, Adjusted Balance
Off-Balance Sheet, Credit Loss, Liability [Roll Forward]
Allowance for Unfunded Commitments							8,278
SEC Schedule, 12-09, Reserve, Off-balance Sheet Activity [Member] | Commercial and industrial | First Staunton Bancshares [Member]
Off-Balance Sheet, Credit Loss, Liability [Roll Forward]
Provision for loan losses			61
SEC Schedule, 12-09, Reserve, Off-balance Sheet Activity [Member] | Commercial and industrial | Accounting Standards Update 2016-13 | Cumulative Effect, Period Of Adoption, Adjustment
Off-Balance Sheet, Credit Loss, Liability [Roll Forward]
Allowance for Unfunded Commitments							(3,998)
SEC Schedule, 12-09, Reserve, Off-balance Sheet Activity [Member] | Commercial real estate — owner occupied
Off-Balance Sheet, Credit Loss, Liability [Roll Forward]
Balance at beginning of period			127
Allowance for Unfunded Commitments	224		224		127	224		127
Provision for loan losses			93
Balance at end of period	224		224		127
SEC Schedule, 12-09, Reserve, Off-balance Sheet Activity [Member] | Commercial real estate — owner occupied | Cumulative Effect, Period Of Adoption, Adjusted Balance
Off-Balance Sheet, Credit Loss, Liability [Roll Forward]
Allowance for Unfunded Commitments							127
SEC Schedule, 12-09, Reserve, Off-balance Sheet Activity [Member] | Commercial real estate — owner occupied | First Staunton Bancshares [Member]
Off-Balance Sheet, Credit Loss, Liability [Roll Forward]
Provision for loan losses			4
SEC Schedule, 12-09, Reserve, Off-balance Sheet Activity [Member] | Commercial real estate — owner occupied | Accounting Standards Update 2016-13 | Cumulative Effect, Period Of Adoption, Adjustment
Off-Balance Sheet, Credit Loss, Liability [Roll Forward]
Allowance for Unfunded Commitments							0
SEC Schedule, 12-09, Reserve, Off-balance Sheet Activity [Member] | Commercial and business lending
Off-Balance Sheet, Credit Loss, Liability [Roll Forward]
Balance at beginning of period			12,403
Allowance for Unfunded Commitments	19,824		19,824		12,403	19,824		12,403
Provision for loan losses			11,354
Balance at end of period	19,824		19,824		12,403
SEC Schedule, 12-09, Reserve, Off-balance Sheet Activity [Member] | Commercial and business lending | Cumulative Effect, Period Of Adoption, Adjusted Balance
Off-Balance Sheet, Credit Loss, Liability [Roll Forward]
Allowance for Unfunded Commitments							8,405
SEC Schedule, 12-09, Reserve, Off-balance Sheet Activity [Member] | Commercial and business lending | First Staunton Bancshares [Member]
Off-Balance Sheet, Credit Loss, Liability [Roll Forward]
Provision for loan losses			65
SEC Schedule, 12-09, Reserve, Off-balance Sheet Activity [Member] | Commercial and business lending | Accounting Standards Update 2016-13 | Cumulative Effect, Period Of Adoption, Adjustment
Off-Balance Sheet, Credit Loss, Liability [Roll Forward]
Allowance for Unfunded Commitments							(3,998)
SEC Schedule, 12-09, Reserve, Off-balance Sheet Activity [Member] | Commercial real estate — investor
Off-Balance Sheet, Credit Loss, Liability [Roll Forward]
Balance at beginning of period			530
Allowance for Unfunded Commitments	550		550		530	550		530
Provision for loan losses			(227)
Balance at end of period	550		550		530
SEC Schedule, 12-09, Reserve, Off-balance Sheet Activity [Member] | Commercial real estate — investor | Cumulative Effect, Period Of Adoption, Adjusted Balance
Off-Balance Sheet, Credit Loss, Liability [Roll Forward]
Allowance for Unfunded Commitments							776
SEC Schedule, 12-09, Reserve, Off-balance Sheet Activity [Member] | Commercial real estate — investor | First Staunton Bancshares [Member]
Off-Balance Sheet, Credit Loss, Liability [Roll Forward]
Provision for loan losses			2
SEC Schedule, 12-09, Reserve, Off-balance Sheet Activity [Member] | Commercial real estate — investor | Accounting Standards Update 2016-13 | Cumulative Effect, Period Of Adoption, Adjustment
Off-Balance Sheet, Credit Loss, Liability [Roll Forward]
Allowance for Unfunded Commitments							246
SEC Schedule, 12-09, Reserve, Off-balance Sheet Activity [Member] | Real estate construction
Off-Balance Sheet, Credit Loss, Liability [Roll Forward]
Balance at beginning of period			7,532
Allowance for Unfunded Commitments	37,880		37,880		7,532	37,880		7,532
Provision for loan losses			11,956
Balance at end of period	37,880		37,880		7,532
SEC Schedule, 12-09, Reserve, Off-balance Sheet Activity [Member] | Real estate construction | Cumulative Effect, Period Of Adoption, Adjusted Balance
Off-Balance Sheet, Credit Loss, Liability [Roll Forward]
Allowance for Unfunded Commitments							25,879
SEC Schedule, 12-09, Reserve, Off-balance Sheet Activity [Member] | Real estate construction | First Staunton Bancshares [Member]
Off-Balance Sheet, Credit Loss, Liability [Roll Forward]
Provision for loan losses			45
SEC Schedule, 12-09, Reserve, Off-balance Sheet Activity [Member] | Real estate construction | Accounting Standards Update 2016-13 | Cumulative Effect, Period Of Adoption, Adjustment
Off-Balance Sheet, Credit Loss, Liability [Roll Forward]
Allowance for Unfunded Commitments							18,347
SEC Schedule, 12-09, Reserve, Off-balance Sheet Activity [Member] | Commercial real estate lending
Off-Balance Sheet, Credit Loss, Liability [Roll Forward]
Balance at beginning of period			8,062
Allowance for Unfunded Commitments	38,430		38,430		8,062	38,430		8,062
Provision for loan losses			11,729
Balance at end of period	38,430		38,430		8,062
SEC Schedule, 12-09, Reserve, Off-balance Sheet Activity [Member] | Commercial real estate lending | Cumulative Effect, Period Of Adoption, Adjusted Balance
Off-Balance Sheet, Credit Loss, Liability [Roll Forward]
Allowance for Unfunded Commitments							26,655
SEC Schedule, 12-09, Reserve, Off-balance Sheet Activity [Member] | Commercial real estate lending | First Staunton Bancshares [Member]
Off-Balance Sheet, Credit Loss, Liability [Roll Forward]
Provision for loan losses			47
SEC Schedule, 12-09, Reserve, Off-balance Sheet Activity [Member] | Commercial real estate lending | Accounting Standards Update 2016-13 | Cumulative Effect, Period Of Adoption, Adjustment
Off-Balance Sheet, Credit Loss, Liability [Roll Forward]
Allowance for Unfunded Commitments							18,593
SEC Schedule, 12-09, Reserve, Off-balance Sheet Activity [Member] | Total commercial
Off-Balance Sheet, Credit Loss, Liability [Roll Forward]
Balance at beginning of period			20,465
Allowance for Unfunded Commitments	58,256		58,256		20,465	58,256		20,465
Provision for loan losses			23,084
Balance at end of period	58,256		58,256		20,465
SEC Schedule, 12-09, Reserve, Off-balance Sheet Activity [Member] | Total commercial | Cumulative Effect, Period Of Adoption, Adjusted Balance
Off-Balance Sheet, Credit Loss, Liability [Roll Forward]
Allowance for Unfunded Commitments							35,060
SEC Schedule, 12-09, Reserve, Off-balance Sheet Activity [Member] | Total commercial | First Staunton Bancshares [Member]
Off-Balance Sheet, Credit Loss, Liability [Roll Forward]
Provision for loan losses			112
SEC Schedule, 12-09, Reserve, Off-balance Sheet Activity [Member] | Total commercial | Accounting Standards Update 2016-13 | Cumulative Effect, Period Of Adoption, Adjustment
Off-Balance Sheet, Credit Loss, Liability [Roll Forward]
Allowance for Unfunded Commitments							14,595
SEC Schedule, 12-09, Reserve, Off-balance Sheet Activity [Member] | Home equity
Off-Balance Sheet, Credit Loss, Liability [Roll Forward]
Balance at beginning of period			1,038
Allowance for Unfunded Commitments	3,846		3,846		1,038	3,846		1,038
Provision for loan losses			152
Balance at end of period	3,846		3,846		1,038
SEC Schedule, 12-09, Reserve, Off-balance Sheet Activity [Member] | Home equity | Cumulative Effect, Period Of Adoption, Adjusted Balance
Off-Balance Sheet, Credit Loss, Liability [Roll Forward]
Allowance for Unfunded Commitments							3,629
SEC Schedule, 12-09, Reserve, Off-balance Sheet Activity [Member] | Home equity | First Staunton Bancshares [Member]
Off-Balance Sheet, Credit Loss, Liability [Roll Forward]
Provision for loan losses			66
SEC Schedule, 12-09, Reserve, Off-balance Sheet Activity [Member] | Home equity | Accounting Standards Update 2016-13 | Cumulative Effect, Period Of Adoption, Adjustment
Off-Balance Sheet, Credit Loss, Liability [Roll Forward]
Allowance for Unfunded Commitments							2,591
SEC Schedule, 12-09, Reserve, Off-balance Sheet Activity [Member] | Other consumer
Off-Balance Sheet, Credit Loss, Liability [Roll Forward]
Balance at beginning of period			405
Allowance for Unfunded Commitments	2,675		2,675		405	2,675		405
Provision for loan losses			766
Balance at end of period	2,675		2,675		405
SEC Schedule, 12-09, Reserve, Off-balance Sheet Activity [Member] | Other consumer | Cumulative Effect, Period Of Adoption, Adjusted Balance
Off-Balance Sheet, Credit Loss, Liability [Roll Forward]
Allowance for Unfunded Commitments							1,909
SEC Schedule, 12-09, Reserve, Off-balance Sheet Activity [Member] | Other consumer | First Staunton Bancshares [Member]
Off-Balance Sheet, Credit Loss, Liability [Roll Forward]
Provision for loan losses			0
SEC Schedule, 12-09, Reserve, Off-balance Sheet Activity [Member] | Other consumer | Accounting Standards Update 2016-13 | Cumulative Effect, Period Of Adoption, Adjustment
Off-Balance Sheet, Credit Loss, Liability [Roll Forward]
Allowance for Unfunded Commitments							1,504
SEC Schedule, 12-09, Reserve, Off-balance Sheet Activity [Member] | Total consumer
Off-Balance Sheet, Credit Loss, Liability [Roll Forward]
Balance at beginning of period			1,443
Allowance for Unfunded Commitments	6,522		6,522		1,443	6,522		1,443
Provision for loan losses			917
Balance at end of period	6,522		6,522		1,443
SEC Schedule, 12-09, Reserve, Off-balance Sheet Activity [Member] | Total consumer | Cumulative Effect, Period Of Adoption, Adjusted Balance
Off-Balance Sheet, Credit Loss, Liability [Roll Forward]
Allowance for Unfunded Commitments							5,538
SEC Schedule, 12-09, Reserve, Off-balance Sheet Activity [Member] | Total consumer | First Staunton Bancshares [Member]
Off-Balance Sheet, Credit Loss, Liability [Roll Forward]
Provision for loan losses			66
SEC Schedule, 12-09, Reserve, Off-balance Sheet Activity [Member] | Total consumer | Accounting Standards Update 2016-13 | Cumulative Effect, Period Of Adoption, Adjustment
Off-Balance Sheet, Credit Loss, Liability [Roll Forward]
Allowance for Unfunded Commitments							4,095
Allowance for Loans Losses and Unfunded Commitments [Member]
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Charge offs			(47,659)
Recoveries			4,129
Net Charge offs			(43,530)
Gross up of allowance for PCD loans at acquisition			3,504
Allowance for credit losses on loans
Balance at beginning of period			223,278
Allowance for Credit Losses on Loans	428,579		428,579		223,278	$ 428,579		223,278
Charge offs			(47,659)
Recoveries			4,129
Net Charge offs			(43,530)
Gross up of allowance for PCD loans at acquisition			3,504
Provision for credit losses			111,457
Balance at end of period	428,579		428,579		223,278
Percent of Loans						1.73%
Allowance for Loan and Lease Losses [Roll Forward]
Net Charge offs			(43,530)
Allowance for Loans Losses and Unfunded Commitments [Member] | Cumulative Effect, Period Of Adoption, Adjusted Balance
Allowance for credit losses on loans
Allowance for Credit Losses on Loans							354,425
Allowance for Loans Losses and Unfunded Commitments [Member] | First Staunton Bancshares [Member]
Allowance for credit losses on loans
Provision for credit losses			2,722
Allowance for Loans Losses and Unfunded Commitments [Member] | Accounting Standards Update 2016-13 | Cumulative Effect, Period Of Adoption, Adjustment
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Allowance for Loan Losses							131,000
Allowance for credit losses on loans
Allowance for Credit Losses on Loans							131,147
Allowance for Loans Losses and Unfunded Commitments [Member] | PPP
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Charge offs			0
Recoveries			0
Net Charge offs			0
Gross up of allowance for PCD loans at acquisition			0
Allowance for credit losses on loans
Balance at beginning of period			0
Allowance for Credit Losses on Loans	808		808		0	$ 808		0
Charge offs			0
Recoveries			0
Net Charge offs			0
Gross up of allowance for PCD loans at acquisition			0
Provision for credit losses			808
Balance at end of period	808		808		0
Percent of Loans						0.08%
Allowance for Loan and Lease Losses [Roll Forward]
Net Charge offs			0
Allowance for Loans Losses and Unfunded Commitments [Member] | PPP | Cumulative Effect, Period Of Adoption, Adjusted Balance
Allowance for credit losses on loans
Allowance for Credit Losses on Loans							0
Allowance for Loans Losses and Unfunded Commitments [Member] | PPP | First Staunton Bancshares [Member]
Allowance for credit losses on loans
Provision for credit losses			0
Allowance for Loans Losses and Unfunded Commitments [Member] | PPP | Accounting Standards Update 2016-13 | Cumulative Effect, Period Of Adoption, Adjustment
Allowance for credit losses on loans
Allowance for Credit Losses on Loans							0
Allowance for Loans Losses and Unfunded Commitments [Member] | Commercial and industrial
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Charge offs			(42,183)
Recoveries			2,215
Net Charge offs			(39,968)
Gross up of allowance for PCD loans at acquisition			293
Allowance for credit losses on loans
Balance at beginning of period			103,409
Allowance for Credit Losses on Loans	195,155		195,155		103,409	$ 195,155		103,409
Charge offs			(42,183)
Recoveries			2,215
Net Charge offs			(39,968)
Gross up of allowance for PCD loans at acquisition			293
Provision for credit losses			82,028
Balance at end of period	195,155		195,155		103,409
Percent of Loans						2.45%
Allowance for Loan and Lease Losses [Roll Forward]
Net Charge offs			(39,968)
Allowance for Loans Losses and Unfunded Commitments [Member] | Commercial and industrial | Cumulative Effect, Period Of Adoption, Adjusted Balance
Allowance for credit losses on loans
Allowance for Credit Losses on Loans							152,330
Allowance for Loans Losses and Unfunded Commitments [Member] | Commercial and industrial | First Staunton Bancshares [Member]
Allowance for credit losses on loans
Provision for credit losses			469
Allowance for Loans Losses and Unfunded Commitments [Member] | Commercial and industrial | Accounting Standards Update 2016-13 | Cumulative Effect, Period Of Adoption, Adjustment
Allowance for credit losses on loans
Allowance for Credit Losses on Loans							48,921
Allowance for Loans Losses and Unfunded Commitments [Member] | Commercial real estate — owner occupied
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Charge offs			0
Recoveries			1
Net Charge offs			1
Gross up of allowance for PCD loans at acquisition			890
Allowance for credit losses on loans
Balance at beginning of period			10,411
Allowance for Credit Losses on Loans	10,538		10,538		10,411	$ 10,538		10,411
Charge offs			0
Recoveries			1
Net Charge offs			1
Gross up of allowance for PCD loans at acquisition			890
Provision for credit losses			829
Balance at end of period	10,538		10,538		10,411
Percent of Loans						1.15%
Allowance for Loan and Lease Losses [Roll Forward]
Net Charge offs			1
Allowance for Loans Losses and Unfunded Commitments [Member] | Commercial real estate — owner occupied | Cumulative Effect, Period Of Adoption, Adjusted Balance
Allowance for credit losses on loans
Allowance for Credit Losses on Loans							8,560
Allowance for Loans Losses and Unfunded Commitments [Member] | Commercial real estate — owner occupied | First Staunton Bancshares [Member]
Allowance for credit losses on loans
Provision for credit losses			259
Allowance for Loans Losses and Unfunded Commitments [Member] | Commercial real estate — owner occupied | Accounting Standards Update 2016-13 | Cumulative Effect, Period Of Adoption, Adjustment
Allowance for credit losses on loans
Allowance for Credit Losses on Loans							(1,851)
Allowance for Loans Losses and Unfunded Commitments [Member] | Commercial and business lending
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Charge offs			(42,183)
Recoveries			2,216
Net Charge offs			(39,967)
Gross up of allowance for PCD loans at acquisition			1,183
Allowance for credit losses on loans
Balance at beginning of period			113,820
Allowance for Credit Losses on Loans	206,501		206,501		113,820	$ 206,501		113,820
Charge offs			(42,183)
Recoveries			2,216
Net Charge offs			(39,967)
Gross up of allowance for PCD loans at acquisition			1,183
Provision for credit losses			83,666
Balance at end of period	206,501		206,501		113,820
Percent of Loans						2.09%
Allowance for Loan and Lease Losses [Roll Forward]
Net Charge offs			(39,967)
Allowance for Loans Losses and Unfunded Commitments [Member] | Commercial and business lending | Cumulative Effect, Period Of Adoption, Adjusted Balance
Allowance for credit losses on loans
Allowance for Credit Losses on Loans							160,890
Allowance for Loans Losses and Unfunded Commitments [Member] | Commercial and business lending | First Staunton Bancshares [Member]
Allowance for credit losses on loans
Provision for credit losses			728
Allowance for Loans Losses and Unfunded Commitments [Member] | Commercial and business lending | Accounting Standards Update 2016-13 | Cumulative Effect, Period Of Adoption, Adjustment
Allowance for credit losses on loans
Allowance for Credit Losses on Loans							47,070
Allowance for Loans Losses and Unfunded Commitments [Member] | Commercial real estate — investor
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Charge offs			(140)
Recoveries			168
Net Charge offs			28
Gross up of allowance for PCD loans at acquisition			753
Allowance for credit losses on loans
Balance at beginning of period			41,044
Allowance for Credit Losses on Loans	59,070		59,070		41,044	$ 59,070		41,044
Charge offs			(140)
Recoveries			168
Net Charge offs			28
Gross up of allowance for PCD loans at acquisition			753
Provision for credit losses			14,486
Balance at end of period	59,070		59,070		41,044
Percent of Loans						1.42%
Allowance for Loan and Lease Losses [Roll Forward]
Net Charge offs			28
Allowance for Loans Losses and Unfunded Commitments [Member] | Commercial real estate — investor | Cumulative Effect, Period Of Adoption, Adjusted Balance
Allowance for credit losses on loans
Allowance for Credit Losses on Loans							43,331
Allowance for Loans Losses and Unfunded Commitments [Member] | Commercial real estate — investor | First Staunton Bancshares [Member]
Allowance for credit losses on loans
Provision for credit losses			474
Allowance for Loans Losses and Unfunded Commitments [Member] | Commercial real estate — investor | Accounting Standards Update 2016-13 | Cumulative Effect, Period Of Adoption, Adjustment
Allowance for credit losses on loans
Allowance for Credit Losses on Loans							2,287
Allowance for Loans Losses and Unfunded Commitments [Member] | Real estate construction
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Charge offs			(19)
Recoveries			27
Net Charge offs			8
Gross up of allowance for PCD loans at acquisition			435
Allowance for credit losses on loans
Balance at beginning of period			32,447
Allowance for Credit Losses on Loans	76,273		76,273		32,447	$ 76,273		32,447
Charge offs			(19)
Recoveries			27
Net Charge offs			8
Gross up of allowance for PCD loans at acquisition			435
Provision for credit losses			17,032
Balance at end of period	76,273		76,273		32,447
Percent of Loans						4.47%
Allowance for Loan and Lease Losses [Roll Forward]
Net Charge offs			8
Allowance for Loans Losses and Unfunded Commitments [Member] | Real estate construction | Cumulative Effect, Period Of Adoption, Adjusted Balance
Allowance for credit losses on loans
Allowance for Credit Losses on Loans							58,261
Allowance for Loans Losses and Unfunded Commitments [Member] | Real estate construction | First Staunton Bancshares [Member]
Allowance for credit losses on loans
Provision for credit losses			537
Allowance for Loans Losses and Unfunded Commitments [Member] | Real estate construction | Accounting Standards Update 2016-13 | Cumulative Effect, Period Of Adoption, Adjustment
Allowance for credit losses on loans
Allowance for Credit Losses on Loans							25,814
Allowance for Loans Losses and Unfunded Commitments [Member] | Commercial real estate lending
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Charge offs			(159)
Recoveries			195
Net Charge offs			36
Gross up of allowance for PCD loans at acquisition			1,188
Allowance for credit losses on loans
Balance at beginning of period			73,490
Allowance for Credit Losses on Loans	135,343		135,343		73,490	$ 135,343		73,490
Charge offs			(159)
Recoveries			195
Net Charge offs			36
Gross up of allowance for PCD loans at acquisition			1,188
Provision for credit losses			31,518
Balance at end of period	135,343		135,343		73,490
Percent of Loans						2.30%
Allowance for Loan and Lease Losses [Roll Forward]
Net Charge offs			36
Allowance for Loans Losses and Unfunded Commitments [Member] | Commercial real estate lending | Cumulative Effect, Period Of Adoption, Adjusted Balance
Allowance for credit losses on loans
Allowance for Credit Losses on Loans							101,591
Allowance for Loans Losses and Unfunded Commitments [Member] | Commercial real estate lending | First Staunton Bancshares [Member]
Allowance for credit losses on loans
Provision for credit losses			1,011
Allowance for Loans Losses and Unfunded Commitments [Member] | Commercial real estate lending | Accounting Standards Update 2016-13 | Cumulative Effect, Period Of Adoption, Adjustment
Allowance for credit losses on loans
Allowance for Credit Losses on Loans							28,101
Allowance for Loans Losses and Unfunded Commitments [Member] | Total commercial
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Charge offs			(42,342)
Recoveries			2,412
Net Charge offs			(39,931)
Gross up of allowance for PCD loans at acquisition			2,371
Allowance for credit losses on loans
Balance at beginning of period			187,311
Allowance for Credit Losses on Loans	341,844		341,844		187,311	$ 341,844		187,311
Charge offs			(42,342)
Recoveries			2,412
Net Charge offs			(39,931)
Gross up of allowance for PCD loans at acquisition			2,371
Provision for credit losses			115,184
Balance at end of period	341,844		341,844		187,311
Percent of Loans						2.17%
Allowance for Loan and Lease Losses [Roll Forward]
Net Charge offs			(39,931)
Allowance for Loans Losses and Unfunded Commitments [Member] | Total commercial | Cumulative Effect, Period Of Adoption, Adjusted Balance
Allowance for credit losses on loans
Allowance for Credit Losses on Loans							262,482
Allowance for Loans Losses and Unfunded Commitments [Member] | Total commercial | First Staunton Bancshares [Member]
Allowance for credit losses on loans
Provision for credit losses			1,739
Allowance for Loans Losses and Unfunded Commitments [Member] | Total commercial | Accounting Standards Update 2016-13 | Cumulative Effect, Period Of Adoption, Adjustment
Allowance for credit losses on loans
Allowance for Credit Losses on Loans							75,171
Allowance for Loans Losses and Unfunded Commitments [Member] | Residential mortgage
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Charge offs			(1,301)
Recoveries			174
Net Charge offs			(1,127)
Gross up of allowance for PCD loans at acquisition			651
Allowance for credit losses on loans
Balance at beginning of period			16,960
Allowance for Credit Losses on Loans	43,826		43,826		16,960	$ 43,826		16,960
Charge offs			(1,301)
Recoveries			174
Net Charge offs			(1,127)
Gross up of allowance for PCD loans at acquisition			651
Provision for credit losses			(6,277)
Balance at end of period	43,826		43,826		16,960
Percent of Loans						0.55%
Allowance for Loan and Lease Losses [Roll Forward]
Net Charge offs			(1,127)
Allowance for Loans Losses and Unfunded Commitments [Member] | Residential mortgage | Cumulative Effect, Period Of Adoption, Adjusted Balance
Allowance for credit losses on loans
Allowance for Credit Losses on Loans							50,175
Allowance for Loans Losses and Unfunded Commitments [Member] | Residential mortgage | First Staunton Bancshares [Member]
Allowance for credit losses on loans
Provision for credit losses			403
Allowance for Loans Losses and Unfunded Commitments [Member] | Residential mortgage | Accounting Standards Update 2016-13 | Cumulative Effect, Period Of Adoption, Adjustment
Allowance for credit losses on loans
Allowance for Credit Losses on Loans							33,215
Allowance for Loans Losses and Unfunded Commitments [Member] | Home equity
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Charge offs			(1,213)
Recoveries			981
Net Charge offs			(232)
Gross up of allowance for PCD loans at acquisition			422
Allowance for credit losses on loans
Balance at beginning of period			11,964
Allowance for Credit Losses on Loans	25,308		25,308		11,964	$ 25,308		11,964
Charge offs			(1,213)
Recoveries			981
Net Charge offs			(232)
Gross up of allowance for PCD loans at acquisition			422
Provision for credit losses			(1,526)
Balance at end of period	25,308		25,308		11,964
Percent of Loans						3.18%
Allowance for Loan and Lease Losses [Roll Forward]
Net Charge offs			(232)
Allowance for Loans Losses and Unfunded Commitments [Member] | Home equity | Cumulative Effect, Period Of Adoption, Adjusted Balance
Allowance for credit losses on loans
Allowance for Credit Losses on Loans							26,204
Allowance for Loans Losses and Unfunded Commitments [Member] | Home equity | First Staunton Bancshares [Member]
Allowance for credit losses on loans
Provision for credit losses			440
Allowance for Loans Losses and Unfunded Commitments [Member] | Home equity | Accounting Standards Update 2016-13 | Cumulative Effect, Period Of Adoption, Adjustment
Allowance for credit losses on loans
Allowance for Credit Losses on Loans							14,240
Allowance for Loans Losses and Unfunded Commitments [Member] | Other consumer
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Charge offs			(2,802)
Recoveries			562
Net Charge offs			(2,240)
Gross up of allowance for PCD loans at acquisition			61
Allowance for credit losses on loans
Balance at beginning of period			7,044
Allowance for Credit Losses on Loans	17,601		17,601		7,044	$ 17,601		7,044
Charge offs			(2,802)
Recoveries			562
Net Charge offs			(2,240)
Gross up of allowance for PCD loans at acquisition			61
Provision for credit losses			4,076
Balance at end of period	17,601		17,601		7,044
Percent of Loans						5.40%
Allowance for Loan and Lease Losses [Roll Forward]
Net Charge offs			(2,240)
Allowance for Loans Losses and Unfunded Commitments [Member] | Other consumer | Cumulative Effect, Period Of Adoption, Adjusted Balance
Allowance for credit losses on loans
Allowance for Credit Losses on Loans							15,564
Allowance for Loans Losses and Unfunded Commitments [Member] | Other consumer | First Staunton Bancshares [Member]
Allowance for credit losses on loans
Provision for credit losses			140
Allowance for Loans Losses and Unfunded Commitments [Member] | Other consumer | Accounting Standards Update 2016-13 | Cumulative Effect, Period Of Adoption, Adjustment
Allowance for credit losses on loans
Allowance for Credit Losses on Loans							8,520
Allowance for Loans Losses and Unfunded Commitments [Member] | Total consumer
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Charge offs			(5,316)
Recoveries			1,717
Net Charge offs			(3,599)
Gross up of allowance for PCD loans at acquisition			1,134
Allowance for credit losses on loans
Balance at beginning of period			35,968
Allowance for Credit Losses on Loans	86,735		86,735		35,968	$ 86,735		$ 35,968
Charge offs			(5,316)
Recoveries			1,717
Net Charge offs			(3,599)
Gross up of allowance for PCD loans at acquisition			1,134
Provision for credit losses			(3,727)
Balance at end of period	$ 86,735		86,735		$ 35,968
Percent of Loans						0.96%
Allowance for Loan and Lease Losses [Roll Forward]
Net Charge offs			(3,599)
Allowance for Loans Losses and Unfunded Commitments [Member] | Total consumer | Cumulative Effect, Period Of Adoption, Adjusted Balance
Allowance for credit losses on loans
Allowance for Credit Losses on Loans							91,943
Allowance for Loans Losses and Unfunded Commitments [Member] | Total consumer | First Staunton Bancshares [Member]
Allowance for credit losses on loans
Provision for credit losses			$ 983
Allowance for Loans Losses and Unfunded Commitments [Member] | Total consumer | Accounting Standards Update 2016-13 | Cumulative Effect, Period Of Adoption, Adjustment
Allowance for credit losses on loans
Allowance for Credit Losses on Loans							$ 55,975

Loans Narrative (Details)

Loans Narrative (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
	Jun. 30, 2020	Jun. 30, 2020	Jun. 30, 2019	Jan. 01, 2020	Dec. 31, 2019
Loans Information [Line Items]
Interest Receivable	$ 87,097	$ 87,097			$ 91,196
Financing Receivable, Nonaccrual, Interest Income	1 million	1 million
Recorded Investment, loans modified in troubled debt restructuring		$ 7,531	$ 6,370
Restructured Loans Subsequently Accruing	$ 1,000	1,000
Ytd Restructured Loans Still On Nonaccrual	7,000	7,000
Loans and Finance Receivables [Member]
Loans Information [Line Items]
Interest Receivable	60,000	60,000			$ 63,000
Possible Liquidity Issues [Member]
Loans Information [Line Items]
Financing Receivable, Troubled Debt Restructuring	102,000	102,000		$ 114,000
Possible Liquidity Issues [Member] | Oil and Gas Portfolio Segment [Member]
Loans Information [Line Items]
Financing Receivable, Troubled Debt Restructuring	76,000	76,000
Possible Liquidity Issues [Member] | Commercial and business lending
Loans Information [Line Items]
Financing Receivable, Troubled Debt Restructuring	$ 26,000	$ 26,000

Goodwill and Other Intangible_3

Goodwill and Other Intangible Assets, Summary of Core Deposit and Other Intangibles (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended		12 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019	Dec. 31, 2019	Dec. 31, 2018
Summary of core deposit intangibles and other intangibles
Other intangible amortization	$ 2,872	$ 2,324	$ 5,686	$ 4,551
Core Deposit Intangibles
Summary of core deposit intangibles and other intangibles
Gross carrying amount at the beginning of the year					$ 80,730	$ 58,100
Additions during the period			7,379		22,630
Accumulated amortization	(16,800)		(16,800)		(12,456)
Net book value	71,309		71,309		68,274
Other intangible amortization			4,344		7,130
Other Intangibles
Summary of core deposit intangibles and other intangibles
Gross carrying amount at the beginning of the year					38,970	$ 44,887
Additions during the period			200		0
Reductions due to sale			(19,000)
Accumulated amortization	(20,285)		(20,285)		(24,643)
Net book value	$ 1,450		1,450		20,027
Other intangible amortization			1,343		2,818
Other Intangibles | Disposal Group, Disposed of by Sale, Not Discontinued Operations [Member]
Summary of core deposit intangibles and other intangibles
Reductions due to sale			$ 17,435		$ 217

Goodwill and Other Intangible_4

Goodwill and Other Intangible Assets, Mortgage Servicing Rights Roll-Forward (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended	12 Months Ended
	Jun. 30, 2020	Jun. 30, 2020	Dec. 31, 2019
Mortgage servicing rights
Mortgage servicing rights at beginning of period		$ 67,607	$ 68,433
Additions from acquisition		1,357	0
Additions		7,812	11,606
Amortization		(10,043)	(12,432)
Mortgage servicing rights at end of period	$ 66,734	66,734	67,607
Valuation Allowance for Impairment of Recognized Servicing Assets [Roll Forward]
Valuation allowance at beginning of period		(302)	(239)
(Additions) recoveries, net	(17,000)	(17,029)	(63)
Valuation allowance at end of period	(17,331)	(17,331)	(302)
Mortgage servicing rights, net	49,403	49,403	67,306
Fair value of mortgage servicing rights	49,423	49,423	72,532
Portfolio of residential mortgage loans serviced for others (“servicing portfolio”)	$ 8,454,204	$ 8,454,204	$ 8,488,969
Mortgage servicing rights, net to servicing portfolio	0.58%	0.58%	0.79%
Mortgage servicing rights expense(a)	$ 27,072	$ 27,072	$ 12,494

Goodwill and Other Intangible_5

Goodwill and Other Intangible Assets, Estimated Future Amortization Expense (Details) - USD ($) $ in Thousands	Jun. 30, 2020	Dec. 31, 2019
Core Deposit Intangibles
Estimated future amortization expense
Six Months Ending December 31, 2020	$ 4,405
Year ending December 31, 2021	8,811
Year ending December 31, 2022	8,811
Year ending December 31, 2023	8,811
Year ending December 31, 2024	8,811
Year ending December 31, 2025	8,811
Beyond 2025	22,849
Net book value	71,309	$ 68,274
Other Intangibles
Estimated future amortization expense
Six Months Ending December 31, 2020	100
Year ending December 31, 2021	200
Year ending December 31, 2022	200
Year ending December 31, 2023	200
Year ending December 31, 2024	200
Year ending December 31, 2025	200
Beyond 2025	350
Net book value	1,450	$ 20,027
Mortgage Servicing Rights
Estimated future amortization expense
Six Months Ending December 31, 2020	7,676
Year ending December 31, 2021	14,970
Year ending December 31, 2022	10,982
Year ending December 31, 2023	8,269
Year ending December 31, 2024	6,409
Year ending December 31, 2025	5,082
Beyond 2025	13,346
Net book value	$ 66,734

Goodwill and Other Intangible_6

Goodwill and Other Intangible Assets (Details Textuals) - USD ($) $ in Thousands	Jun. 30, 2020	Feb. 14, 2020	Jun. 30, 2020	Mar. 31, 2020	Jun. 30, 2020	Dec. 31, 2019
Goodwill and Intangible Assets Disclosure [Abstract]
Goodwill, Impairment Loss				$ 0	$ 0
Valuation Allowance for Impairment of Recognized Servicing Assets, Additions (Deductions) for Expenses (Recoveries)			$ 17,000		17,029	$ 63
Goodwill [Line Items]
Goodwill	$ 1,107,902		1,107,902		1,107,902	1,176,230
Goodwill, Acquired During Period				15,000
Other Intangibles
Goodwill [Line Items]
Decrease of other intangible assets					19,000
Other Intangibles | Disposal Group, Disposed of by Sale, Not Discontinued Operations [Member]
Goodwill [Line Items]
Decrease of other intangible assets					$ (17,435)	$ (217)
Other Intangibles | Disposal Group, Disposed of by Sale, Not Discontinued Operations [Member] | ABRC
Goodwill [Line Items]
Decrease of other intangible assets	(17,000)
First Staunton Bancshares [Member]
Goodwill [Line Items]
Goodwill, Acquired During Period	$ 82,000	$ 13,414		$ 15,000
Goodwill, Other Increase (Decrease)			$ 2,000

Short and Long-Term Funding, FH

Short and Long-Term Funding, FHLB Advances (Components of Short-term and Long-term Funding) (Details) - USD ($) $ in Thousands	Jun. 30, 2020	Dec. 31, 2019
Short-term Funding [Abstract]
Federal funds purchased	$ 3,430	$ 362,000
Securities sold under agreements to repurchase	138,863	71,097
Federal funds purchased and securities sold under agreements to repurchase	142,293	433,097
Commercial paper	39,535	32,016
Total short-term funding	181,828	465,113
Long-Term Funding
Corporation subordinated notes, at par, due 2025	250,000	250,000
PPPLF	1,009,760	0
Finance lease liability	1,202	2,209
Capitalized costs	(2,265)	(2,866)
Total long-term funding	1,558,698	549,343
Total short and long-term funding, excluding FHLB advances	1,740,525	1,014,456
FHLB Advances
Short-term FHLB advances	0	520,000
Long-term FHLB advances	2,657,016	2,660,967
Total FHLB advances	2,657,016	3,180,967
Total short and long-term funding	4,397,542	4,195,422
Bank senior notes, at par, due 2021
Long-Term Funding
Senior notes	$ 300,000	$ 300,000

Short and Long-Term Funding (Re

Short and Long-Term Funding (Remaining Contractual Maturity of the Securities Sold Under Agreements to Repurchase) (Details) - USD ($) $ in Thousands	Jun. 30, 2020	Dec. 31, 2019
RemainingContractualMaturityoftheSecuritiesSoldUnderAgreementtoRepurchase [Line Items]
Repurchase agreements	$ 138,863	$ 71,097
Overnight and Continuous
RemainingContractualMaturityoftheSecuritiesSoldUnderAgreementtoRepurchase [Line Items]
Repurchase agreements	138,863	71,097
Up to 30 days
RemainingContractualMaturityoftheSecuritiesSoldUnderAgreementtoRepurchase [Line Items]
Repurchase agreements	0	0
30-90 days
RemainingContractualMaturityoftheSecuritiesSoldUnderAgreementtoRepurchase [Line Items]
Repurchase agreements	0	0
Greater than 90 days
RemainingContractualMaturityoftheSecuritiesSoldUnderAgreementtoRepurchase [Line Items]
Repurchase agreements	0	0
Agency mortgage-related securities
RemainingContractualMaturityoftheSecuritiesSoldUnderAgreementtoRepurchase [Line Items]
Repurchase agreements	138,863	71,097
Agency mortgage-related securities | Overnight and Continuous
RemainingContractualMaturityoftheSecuritiesSoldUnderAgreementtoRepurchase [Line Items]
Repurchase agreements	138,863	71,097
Agency mortgage-related securities | Up to 30 days
RemainingContractualMaturityoftheSecuritiesSoldUnderAgreementtoRepurchase [Line Items]
Repurchase agreements	0	0
Agency mortgage-related securities | 30-90 days
RemainingContractualMaturityoftheSecuritiesSoldUnderAgreementtoRepurchase [Line Items]
Repurchase agreements	0	0
Agency mortgage-related securities | Greater than 90 days
RemainingContractualMaturityoftheSecuritiesSoldUnderAgreementtoRepurchase [Line Items]
Repurchase agreements	$ 0	$ 0

Short and Long-Term Funding (Lo

Short and Long-Term Funding (Long-term Funding Narrative) (Details) - USD ($) $ in Millions	Aug. 13, 2018	Nov. 13, 2014	Nov. 30, 2014	Jun. 30, 2020
Long-Term Funding
Carrying Value of Securities Purchased under Agreements to Resell and Deposits Paid for Securities Borrowed				$ 203
Two Thousand Eighteen Senior Notes [Member] [Domain]
Long-Term Funding
Debt Instrument, Issuance Date Month, Year	August 2018
New Senior Debt Issued	$ 300
Debt Instrument, Maturity Date Month, Year	August 2021
Debt Instrument Call Date Earliest Month Year	July 2021
Debt Instrument, Interest Rate, Stated Percentage	3.50%
PPP
Long-Term Funding
Debt Instrument, Interest Rate, Stated Percentage				0.35%
Two Thousand Fourteen Subordinated Notes
Long-Term Funding
Debt Instrument, Issuance Date Month, Year		November 2014
Junior Subordinated Debentures Issued			$ 250
Debt Instrument, Term			10 years
Debt Instrument, Maturity Date Month, Year		January 2025
Debt Instrument Call Date Earliest Month Year		October 2024
Subordinated Borrowing, Interest Rate			4.25%

Derivative and Hedging Activi_3

Derivative and Hedging Activities, Derivative Instruments Not Designated as Hedging Instruments (Details) - USD ($) $ in Thousands	Jun. 30, 2020	Dec. 31, 2019
Asset
Derivative Instruments Not Designated as Hedging Instruments [Abstract]
Derivatives (trading and other assets), fair value	$ 293,583	$ 104,305
Less: Legally enforceable master netting agreements	1,586	10,410
Less: Cash collateral pledged/received	36,234	1,408
Derivative Asset	255,763	92,487
Liability
Derivative Instruments Not Designated as Hedging Instruments [Abstract]
Derivatives (trading and other liabilities), fair value	73,865	37,455
Less: Legally enforceable master netting agreements	1,586	10,410
Less: Cash collateral pledged/received	32,285	11,365
Derivatives (trading liabilities)	39,994	15,680
Not designated as hedging instruments | Asset | Interest rate-related instruments — customer and mirror
Derivative Instruments Not Designated as Hedging Instruments [Abstract]
Notional Amount	3,564,015	3,029,877
Derivatives (trading and other assets), fair value	238,003	77,024
Not designated as hedging instruments | Asset | Foreign currency exchange forwards
Derivative Instruments Not Designated as Hedging Instruments [Abstract]
Notional Amount	337,015	272,636
Derivatives (trading and other assets), fair value	4,200	4,226
Not designated as hedging instruments | Asset | Commodity contracts
Derivative Instruments Not Designated as Hedging Instruments [Abstract]
Notional Amount	163,307	255,089
Derivatives (trading and other assets), fair value	38,543	20,528
Not designated as hedging instruments | Asset | Mortgage banking(a)
Derivative Instruments Not Designated as Hedging Instruments [Abstract]
Notional Amount	299,330	255,291
Derivatives (trading and other assets), fair value	12,837	2,527
Not designated as hedging instruments | Liability | Interest rate-related instruments — customer and mirror
Derivative Instruments Not Designated as Hedging Instruments [Abstract]
Notional Amount	3,564,015	3,029,877
Derivatives (trading and other liabilities), fair value	31,472	13,073
Not designated as hedging instruments | Liability | Foreign currency exchange forwards
Derivative Instruments Not Designated as Hedging Instruments [Abstract]
Notional Amount	290,557	264,653
Derivatives (trading and other liabilities), fair value	4,102	4,048
Not designated as hedging instruments | Liability | Commodity contracts
Derivative Instruments Not Designated as Hedging Instruments [Abstract]
Notional Amount	158,756	255,165
Derivatives (trading and other liabilities), fair value	36,998	19,624
Not designated as hedging instruments | Liability | Mortgage banking(a)
Derivative Instruments Not Designated as Hedging Instruments [Abstract]
Notional Amount	393,184	263,000
Derivatives (trading and other liabilities), fair value	$ 1,293	$ 710

Derivative and Hedging Activi_4

Derivative and Hedging Activities Income impact of Fair Value and Cash Flow Hedge (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Interest Income
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Change in Unrealized Gain (Loss) on Hedged Item in Fair Value Hedge	$ (542)	$ 53	$ (864)	$ 219
Other Income (Expense)
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Change in Unrealized Gain (Loss) on Hedged Item in Fair Value Hedge	0	0	(262)	0
Not Designated as Hedging Instrument, Economic Hedge [Member] | Interest Income
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Change in Unrealized Gain (Loss) on Hedged Item in Fair Value Hedge	(542)	4,165	(864)	6,222
Not Designated as Hedging Instrument, Economic Hedge [Member] | Other Income (Expense)
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Change in Unrealized Gain (Loss) on Hedged Item in Fair Value Hedge	0	0	(262)	0
Designated as Hedging Instrument | Interest Income
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Change in Unrealized Gain (Loss) on Hedged Item in Fair Value Hedge	0	(4,112)	0	(6,003)
Designated as Hedging Instrument | Other Income (Expense)
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Change in Unrealized Gain (Loss) on Hedged Item in Fair Value Hedge	$ 0	$ 0	$ 0	$ 0

Derivative and Hedging Activi_5

Derivative and Hedging Activities Derivative Impact on Perfomance (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Capital markets, net | Interest rate-related instruments — customer and mirror, net
Derivative Instruments
Derivative Instruments Not Designated as Hedging Instruments, Gain (Loss), Net	$ (65)	$ (1,018)	$ (3,155)	$ (1,690)
Capital markets, net | Foreign currency exchange forwards
Derivative Instruments
Derivative Instruments Not Designated as Hedging Instruments, Gain (Loss), Net	41	186	(81)	212
Capital markets, net | Commodity contracts
Derivative Instruments
Derivative Instruments Not Designated as Hedging Instruments, Gain (Loss), Net	(105)	(1,678)	641	(2,245)
Mortgage banking, net | Interest rate lock commitments (mortgage)
Derivative Instruments
Derivative Instruments Not Designated as Hedging Instruments, Gain (Loss), Net	382	1,837	10,310	2,661
Mortgage banking, net | Forward commitments (mortgage)
Derivative Instruments
Derivative Instruments Not Designated as Hedging Instruments, Gain (Loss), Net	$ 9,679	$ (78)	$ (582)	$ 169

Derivative and Hedging Activi_6

Derivative and Hedging Activities (Details Textuals) - USD ($) $ in Millions	Jun. 30, 2020	Dec. 31, 2019
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Investment securities and cash equivalents pledged as collateral	$ 73	$ 57
Derivative collateral right to reclaim cash	38	14
Designated as Hedging Instrument
Balance Sheet Recording of Fair Value Hedge [Line Items]
Derivative Liability Notional Amount, Terminated		$ 500
Underlying Hedged Asset, Amortized Cost Basis	751
Deferred (Gain) Loss on Discontinuation of Fair Value Hedge	$ 4

Balance Sheet Offsetting (Detai

Balance Sheet Offsetting (Details) - Interest Rate Contract - USD ($) $ in Thousands	Jun. 30, 2020	Dec. 31, 2019
Derivative assets
Gross Amounts Recognized	$ 38,569	$ 11,864
Derivative Assets Offset	(1,586)	(10,410)
Derivative Asset, Collateral, Obligation to Return Cash, Offset	(36,234)	(1,408)
Net Amounts Presented on the Consolidated Balance Sheets	749	45
Investment Securities Received	0	0
Net amount	749	45
Derivative liabilities
Gross Amounts Recognized	34,434	22,189
Derivative Liability, Fair Value, Gross Asset	(1,586)	(10,410)
Derivative Liability, Collateral, Right to Reclaim Cash, Offset	(32,285)	(11,365)
Net Amounts Presented on the Consolidated Balance Sheets	564	413
Investment Securities Pledged	0	0
Net amount	$ 564	$ 413

Commitments, Off-Balance Shee_3

Commitments, Off-Balance Sheet Arrangements, Legal Proceedings and Regulatory Matters, Summary of Lending Related and Other Commitments (Details) - USD ($) $ in Thousands	Jun. 30, 2020	Dec. 31, 2019
Schedule of lending-related and other commitments [Line Items]
Lending related commitments, fair value	$ 0	$ 0
Commitments to extend credit, excluding commitments to originate residential mortgage loans held for sale(a)(b)
Summary of lending-related and other commitments
Lending related commitments	9,580,338	9,024,412
Commercial letters of credit(a)
Summary of lending-related and other commitments
Lending related commitments	6,123	7,081
Standby letters of credit(c)
Summary of lending-related and other commitments
Lending related commitments	265,223	277,969
Standby letters of credit, fair value	$ 3,000	$ 3,000

Commitment, Changes in the Allo

Commitment, Changes in the Allowance for Unfunded Commitments (Details) - USD ($) $ in Thousands	6 Months Ended	12 Months Ended
	Jun. 30, 2020	Dec. 31, 2019	Jan. 01, 2020
Off-Balance Sheet, Credit Loss, Liability [Roll Forward]
Balance at beginning of period	$ 21,907
Allowance for Unfunded Commitments	64,776	$ 21,907
Provision for loan losses	24,000
Balance at end of period	64,776	21,907
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]
Balance at beginning of period	21,907
Balance at end of period	64,776	21,907
Cumulative Effect, Period Of Adoption, Adjusted Balance
Off-Balance Sheet, Credit Loss, Liability [Roll Forward]
Allowance for Unfunded Commitments			$ 40,597
First Staunton Bancshares [Member]
Off-Balance Sheet, Credit Loss, Liability [Roll Forward]
Provision for loan losses	179
Accounting Standards Update 2016-13 | Cumulative Effect, Period Of Adoption, Adjustment
Off-Balance Sheet, Credit Loss, Liability [Roll Forward]
Allowance for Unfunded Commitments			$ 18,690
SEC Schedule, 12-09, Reserve, Off-balance Sheet Activity [Member]
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]
Balance at beginning of period	21,907	24,336
Balance at beginning of period, adjusted		24,336
Provision for unfunded commitments	$ 24,000	(2,500)
Balance at end of period		21,907
Amount Recorded at Acquisition [Member] | SEC Schedule, 12-09, Reserve, Off-balance Sheet Activity [Member]
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]
Amount recorded at acquisition		$ 70

Commitments, Off-Balance Shee_4

Commitments, Off-Balance Sheet Arrangements, Legal Proceedings and Regulatory Matters (Details Textuals) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended		12 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019	Dec. 31, 2019	Jan. 01, 2020	Dec. 31, 2018
Commitments, Off-Balance Sheet Arrangements, and Contingent Liabilities (Textuals) [Line Items]
Allowance for Unfunded Commitments	$ 64,776		$ 64,776		$ 21,907
Expense Related to Qualified Affordable Housing Projects	6,000	$ 5,000	12,000	$ 10,000
Remaining Investment in Qualified Affordable Housing Projects	262,000		262,000		234,000
Variable Interest Entity Reporting Entity Involvement Unfunded Obligation Amount	136,000		136,000		123,000
Qualified Affordable Housing Investments, Impairment Loss			0		0
Loans Repurchased Under Make Whole Requests	3,000		$ 3,000		$ 2,000
Loans Sold To Outside Investors Loss ReimbursementSettlement Paid			no		negligible
Loans Sold To Outside Investors Original Amount	13,500,000		$ 13,500,000
Loans Sold To Outside Investors Remaining Outstanding Amount	7,400,000		7,400,000
Unfunded Commitments	64,776		64,776		$ 21,907
Residential Mortgage Loans Sold With Recourse Risk	34,000		34,000		39,000
Residential Mortgage Loans Sold With Credit Recourse Risk	39,000		39,000		45,000
SEC Schedule, 12-09, Reserve, Off-balance Sheet Activity [Member]
Commitments, Off-Balance Sheet Arrangements, and Contingent Liabilities (Textuals) [Line Items]
Provision for unfunded commitments			24,000		(2,500)
Unfunded Commitments					21,907		$ 24,336
Mortgage Repurchase Reserve
Commitments, Off-Balance Sheet Arrangements, and Contingent Liabilities (Textuals) [Line Items]
Unfunded Commitments	1,000		1,000		795
UnconsolidatedProjectsLowIncomeHousing [Member]
Commitments, Off-Balance Sheet Arrangements, and Contingent Liabilities (Textuals) [Line Items]
Other Investments	274,000		274,000		248,000
PrincipalInvestmentCommitment [Member]
Commitments, Off-Balance Sheet Arrangements, and Contingent Liabilities (Textuals) [Line Items]
Other Investments	$ 28,000		$ 28,000		$ 26,000
Accounting Standards Update 2016-13 | Cumulative Effect, Period Of Adoption, Adjustment
Commitments, Off-Balance Sheet Arrangements, and Contingent Liabilities (Textuals) [Line Items]
Allowance for Unfunded Commitments						$ 18,690

Fair Value Measurements, Assets

Fair Value Measurements, Assets and Liabilities Measured at Fair Value on a Recurring Basis (Details) - USD ($) $ in Thousands	Jun. 30, 2020	Dec. 31, 2019
Assets, Fair Value Disclosure [Abstract]
Investment securities available for sale	$ 3,149,773	$ 3,262,586
Fair Value, Inputs, Level 1
Assets, Fair Value Disclosure [Abstract]
Investment securities available for sale	26,735	0
Fair Value, Inputs, Level 2
Assets, Fair Value Disclosure [Abstract]
Investment securities available for sale	3,123,039	3,262,586
Residential Held-for-sale, Fair Value Disclosure	196,673	136,280
Fair Value, Inputs, Level 3
Assets, Fair Value Disclosure [Abstract]
Trading assets	12,837	2,527
Liabilities, Fair Value Disclosure [Abstract]
Trading liabilities	1,293	710
Fair Value, Measurements, Recurring | Fair Value, Inputs, Level 1 | Other Debt And Other Equity Securities
Assets, Fair Value Disclosure [Abstract]
Investment securities available for sale	1,647	1,646
Fair Value, Measurements, Recurring | Fair Value, Inputs, Level 1 | Total investment securities available for sale
Assets, Fair Value Disclosure [Abstract]
Investment securities available for sale	26,735	0
Fair Value, Measurements, Recurring | Fair Value, Inputs, Level 2 | GNMA
Assets, Fair Value Disclosure [Abstract]
Investment securities available for sale	605,561	985,139
Fair Value, Measurements, Recurring | Fair Value, Inputs, Level 2 | FFELP
Assets, Fair Value Disclosure [Abstract]
Investment securities available for sale	340,474	263,693
Fair Value, Measurements, Recurring | Fair Value, Inputs, Level 2 | Other Debt And Other Equity Securities
Assets, Fair Value Disclosure [Abstract]
Investment securities available for sale	3,000	3,000
Fair Value, Measurements, Recurring | Fair Value, Inputs, Level 2 | Total investment securities available for sale
Assets, Fair Value Disclosure [Abstract]
Investment securities available for sale	3,123,039	3,262,586
Fair Value, Measurements, Recurring | Fair Value, Inputs, Level 2 | Residential loans held for sale
Assets, Fair Value Disclosure [Abstract]
Investment securities available for sale	196,673	136,280
Fair Value, Measurements, Recurring | Fair Value, Inputs, Level 2 | Interest rate-related instruments — customer and mirror, net
Assets, Fair Value Disclosure [Abstract]
Trading assets	238,003	77,024
Liabilities, Fair Value Disclosure [Abstract]
Trading liabilities	31,472	13,073
Fair Value, Measurements, Recurring | Fair Value, Inputs, Level 2 | Foreign currency exchange forwards
Assets, Fair Value Disclosure [Abstract]
Trading assets	4,200	4,226
Liabilities, Fair Value Disclosure [Abstract]
Trading liabilities	4,102	4,048
Fair Value, Measurements, Recurring | Fair Value, Inputs, Level 2 | Commodity contracts
Assets, Fair Value Disclosure [Abstract]
Trading assets	38,543	20,528
Liabilities, Fair Value Disclosure [Abstract]
Trading liabilities	36,998	19,624
Fair Value, Measurements, Recurring | Fair Value, Inputs, Level 3 | Mortgage banking(a)
Assets, Fair Value Disclosure [Abstract]
Trading assets	12,837	2,527
Fair Value, Measurements, Recurring | Fair Value, Inputs, Level 3 | Forward commitments (mortgage)
Liabilities, Fair Value Disclosure [Abstract]
Trading liabilities	1,293	710
FNMA / FHLMC | Fair Value, Measurements, Recurring | Fair Value, Inputs, Level 2 | FNMA / FHLMC
Assets, Fair Value Disclosure [Abstract]
Investment securities available for sale	818,110	132,660
FNMA / FHLMC | Fair Value, Measurements, Recurring | Fair Value, Inputs, Level 2 | Commercial mortgage-related securities
Assets, Fair Value Disclosure [Abstract]
Investment securities available for sale	22,061	21,728
GNMA | Fair Value, Measurements, Recurring | Fair Value, Inputs, Level 2 | Commercial mortgage-related securities
Assets, Fair Value Disclosure [Abstract]
Investment securities available for sale	803,362	1,310,207
US Treasury Securities
Assets, Fair Value Disclosure [Abstract]
Investment securities available for sale	26,735
US Treasury Securities | Fair Value, Measurements, Recurring | Fair Value, Inputs, Level 1
Assets, Fair Value Disclosure [Abstract]
Investment securities available for sale	26,735	0
Obligations of state and political subdivisions (municipal securities)
Assets, Fair Value Disclosure [Abstract]
Investment securities available for sale	495,888	546,160
Obligations of state and political subdivisions (municipal securities) | Fair Value, Measurements, Recurring | Fair Value, Inputs, Level 2
Assets, Fair Value Disclosure [Abstract]
Investment securities available for sale	495,888	546,160
Agency Securities
Assets, Fair Value Disclosure [Abstract]
Investment securities available for sale	25,007
Agency Securities | Fair Value, Measurements, Recurring | Fair Value, Inputs, Level 2
Assets, Fair Value Disclosure [Abstract]
Investment securities available for sale	25,007	0
SBA
Assets, Fair Value Disclosure [Abstract]
Investment securities available for sale	9,575
SBA | Fair Value, Measurements, Recurring | Fair Value, Inputs, Level 2
Assets, Fair Value Disclosure [Abstract]
Investment securities available for sale	$ 9,575	$ 0

Fair Value Measurements Financi

Fair Value Measurements Financial Instruments Classified Within Level 3 (Details) - USD ($) $ in Thousands	6 Months Ended	12 Months Ended
	Jun. 30, 2020	Dec. 31, 2019
Interest rate lock commitments to originate residential mortgage loans held for sale
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward]
Beginning Balance	$ 2,527	$ 2,208
New production	44,349	24,164
Closed loans / settlements	(37,505)	(29,375)
Other	3,467	5,530
Mortgage derivative gain (loss)	10,310	319
Ending Balance	12,837	2,527
Forward commitments to sell residential mortgage loans
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward]
Beginning Balance	710	2,072
New production	(439)	(2,367)
Closed loans / settlements	(12,197)	(5,968)
Other	13,218	6,973
Mortgage derivative gain (loss)	582	(1,362)
Ending Balance	1,293	710
Total derivatives
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward]
Beginning Balance	1,817	140
New production	44,788	26,531
Closed loans / settlements	(25,308)	(23,407)
Other	(9,752)	(1,443)
Mortgage derivative gain (loss)	9,727	1,681
Ending Balance	$ 11,544	$ 1,817

Fair Value Measurements Equity

Fair Value Measurements Equity Securities Without Readily Determinable Fair Values (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Equity Securities Without Readily Determinable Fair Value Amount [Roll Forward]
Carrying value as of December 31, 2019			$ 13,000
Carrying value changes	$ 0	$ 13,444	0	$ 13,444
Carrying value as of June 30, 2020	13,000		13,000
Fair Value, Inputs, Level 3
Equity Securities Without Readily Determinable Fair Value Amount [Roll Forward]
Carrying value as of December 31, 2019			13,444
Carrying value changes			0
Carrying value as of June 30, 2020	13,444		13,444
Cumulative upward carrying value changes between January 1, 2018 and June 30, 2020	13,444		13,444
Cumulative downward carrying value changes/impairment between January 1, 2018 and June 30, 2020	$ 0		$ 0

Fair Value Measurements, Asse_2

Fair Value Measurements, Assets and Liabilities Measured at Fair Value on a Nonrecurring Basis (Details) - USD ($) $ in Thousands	6 Months Ended		12 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Dec. 31, 2019
Assets and Liabilities Measured at Fair Value on a Non-recurring Basis
Mortgage servicing rights	$ 49,423		$ 72,532
Mortgage banking, net	17,029	$ 146
Equity securities	13,000		13,000
Investment securities gains (losses), net	15,091		15,090
Fair Value, Inputs, Level 3
Assets and Liabilities Measured at Fair Value on a Non-recurring Basis
Equity securities	13,444		13,444
Investment securities gains (losses), net	13,444		13,444
Fair Value, Nonrecurring [Member] | Fair Value, Inputs, Level 2
Assets and Liabilities Measured at Fair Value on a Non-recurring Basis
OREO(b)	6,611		3,565
Other noninterest expense	(2,273)		(1,860)
Fair Value, Nonrecurring [Member] | Fair Value, Inputs, Level 3
Assets and Liabilities Measured at Fair Value on a Non-recurring Basis
Individually evaluated loans(a)	88,416		45,792
Provision for credit losses	(58,523)		(66,172)
Mortgage servicing rights	49,423		72,532
Mortgage banking, net	$ (17,029)		(63)
Equity securities			13,444
Investment securities gains (losses), net			$ 13,444

Fair Value Measurements Fair Va

Fair Value Measurements Fair Value Unobservable Level 3 Measurements (Details) - Fair Value, Inputs, Level 3	6 Months Ended
	Jun. 30, 2020
Discounted Cash Flow | Mortgage Servicing Rights | Minimum
Assumption for Fair Value as of Balance Sheet Date of Assets or Liabilities that relate to Transferor's Continuing Involvement [Line Items]
Assumption for Fair Value of Assets or Liabilities that relate to Transferor's Continuing Involvement, Discount Rate	9.00%
Assumption for Fair Value of Assets or Liabilities that relate to Transferor's Continuing Involvement, Prepayment Speed	12.00%
Discounted Cash Flow | Mortgage Servicing Rights | Maximum
Assumption for Fair Value as of Balance Sheet Date of Assets or Liabilities that relate to Transferor's Continuing Involvement [Line Items]
Assumption for Fair Value of Assets or Liabilities that relate to Transferor's Continuing Involvement, Discount Rate	14.00%
Assumption for Fair Value of Assets or Liabilities that relate to Transferor's Continuing Involvement, Prepayment Speed	35.00%
Discounted Cash Flow | Mortgage Servicing Rights | Weighted Average [Member]
Assumption for Fair Value as of Balance Sheet Date of Assets or Liabilities that relate to Transferor's Continuing Involvement [Line Items]
Assumption for Fair Value of Assets or Liabilities that relate to Transferor's Continuing Involvement, Discount Rate	9.00%
Assumption for Fair Value of Assets or Liabilities that relate to Transferor's Continuing Involvement, Prepayment Speed	18.00%
Appraisals/Discounted Cash Flow | Impaired Finance Receivable | Minimum
Assumption for Fair Value as of Balance Sheet Date of Assets or Liabilities that relate to Transferor's Continuing Involvement [Line Items]
Assumption for Fair Value of Assets or Liabilities that relate to Transferor's Continuing Involvement, Discount Rate	0.00%
Appraisals/Discounted Cash Flow | Impaired Finance Receivable | Maximum
Assumption for Fair Value as of Balance Sheet Date of Assets or Liabilities that relate to Transferor's Continuing Involvement [Line Items]
Assumption for Fair Value of Assets or Liabilities that relate to Transferor's Continuing Involvement, Discount Rate	68.00%
Appraisals/Discounted Cash Flow | Impaired Finance Receivable | Weighted Average [Member]
Assumption for Fair Value as of Balance Sheet Date of Assets or Liabilities that relate to Transferor's Continuing Involvement [Line Items]
Assumption for Fair Value of Assets or Liabilities that relate to Transferor's Continuing Involvement, Discount Rate	66.00%

Fair Value Measurements, Fair V

Fair Value Measurements, Fair Value of Financial Instruments (Details) - USD ($) $ in Thousands	Jun. 30, 2020	Dec. 31, 2019
Financial assets
Cash and due from banks	$ 443,500	$ 373,380
Interest-bearing deposits in other financial institutions	1,569,006	207,624
Federal funds sold and securities purchased under agreements to resell	185	7,740
Investment securities held to maturity, net	2,077,287	2,205,083
Investment securities held to maturity, fair value	2,209,505	2,276,465
Investment securities available for sale	3,149,773	3,262,586
Equity securities with readily determinable fair values, Fair Value	2,000	2,000
Equity Securities without Readily Determinable Fair Value, Amount	13,000	13,000
Investment securities gains (losses), net	15,091	15,090
FHLB and Federal Reserve Bank stocks	206,281	227,347
Loans, net	24,468,868	22,620,068
Financial liabilities
Short-term funding	181,828	465,113
Other long-term funding	1,558,698	549,343
PPPLF	1,009,760	0
FHLB advances	2,657,016	3,180,967
Letters of Credit Outstanding, Amount	265,000	278,000
Fair Value, Inputs, Level 1
Financial assets
Cash and due from banks	443,500	373,380
Cash and due from banks, Fair Value	443,500	373,380
Interest-bearing deposits in other financial institutions	1,569,006	207,624
Interest-bearing deposits in other financial institutions, fair value	1,569,006	207,624
Federal funds sold and securities purchased under agreements to resell	185	7,740
Federal funds sold and securities purchased under agreements to resell, fair value	185	7,740
Investment securities held to maturity, net	999	999
Investment securities held to maturity, fair value	1,036	1,018
Investment securities available for sale	26,735	0
Investment securities available for sale, fair value	26,735	0
Equity securities with readily determinable fair value, Carrying Amount	1,647	1,646
Equity securities with readily determinable fair values, Fair Value	1,647	1,646
Fair Value, Inputs, Level 2
Financial assets
Investment securities held to maturity, net	2,076,226	2,204,084
Investment securities held to maturity, fair value	2,208,408	2,275,447
Investment securities available for sale	3,123,039	3,262,586
Investment securities available for sale, fair value	3,123,039	3,262,586
FHLB and Federal Reserve Bank stocks	206,281	227,347
FHLB and Federal Reserve Bank stocks, fair value	206,281	227,347
Residential Loans Receivable Held-for-sale, Net, Not Part of Disposal Group	196,673	136,280
Residential Held-for-sale, Fair Value Disclosure	196,673	136,280
Commercial loans held for sale	3,565	15,000
Commercial Loans Held-for-sale, Fair Value Disclosure	3,565	15,000
Bank and Corporate Owned Life Insurance	676,196	671,948
Bank owned life insurance, fair value	676,196	671,948
Financial liabilities
Brokered CDs and other time deposits	2,248,904	2,622,803
Brokered CDs and other time deposits, fair value	2,267,551	2,622,803
Short-term funding	181,828	465,113
Short-term funding, fair value	181,828	465,113
Other long-term funding	548,937	549,343
Long-term funding, fair value	576,667	572,873
PPPLF	1,009,760	0
Paycheck Protection Program Loan Funding Fair Value	1,009,926	0
FHLB advances	2,657,016	3,180,967
Advances, Fair Value Disclosure	2,851,632	3,207,793
Standby letters of credit	2,644	2,710
Standby letters of credit, fair value	2,644	2,710
Fair Value, Inputs, Level 2 | Other Assets [Member]
Financial assets
Derivative Asset	280,746	101,778
Derivatives (trading and other assets), fair value	280,746	101,778
Fair Value, Inputs, Level 2 | Other Liabilities [Member]
Financial liabilities
Derivatives (trading liabilities)	72,572	36,745
Derivatives (trading and other liabilities), fair value	72,572	36,745
Fair Value, Inputs, Level 3
Financial assets
Equity Securities without Readily Determinable Fair Value, Amount	13,444	13,444
Investment securities gains (losses), net	13,444	13,444
Loans, net	24,468,868	22,620,068
Loans, net, fair value	24,390,225	22,399,621
Derivative Asset	12,837	2,527
Derivatives (trading and other assets), fair value	12,837	2,527
Financial liabilities
Noninterest-bearing demand, savings, interest-bearing demand, and money market accounts	24,302,540	21,156,261
Noninterest-bearing demand, savings, interest-bearing demand, and money market deposits, fair value	24,302,540	21,156,261
Derivatives (trading liabilities)	1,293	710
Derivatives (trading and other liabilities), fair value	$ 1,293	$ 710

Fair Value Measurements (Detail

Fair Value Measurements (Details Textuals)	6 Months Ended
	Jun. 30, 2020
Fair Value Measurements (Textuals) [Abstract]
Fair Value Inputs Closing Ratio	88.00%

Retirement Plans, Components of

Retirement Plans, Components of Net Periodic Benefit Cost for the Pension and Postretirement Tables (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
RAP
Net period benefit cost for the pension and postretirement plans
Service cost	$ 2,165	$ 1,925	$ 4,330	$ 3,850
Interest cost	2,008	2,413	4,015	4,825
Expected return on plan assets	(6,405)	(6,075)	(12,810)	(12,150)
Amortization of prior service cost	(19)	(19)	(38)	(38)
Amortization of actuarial loss (gain)	803	65	1,610	130
Total net periodic pension cost	(1,449)	(1,691)	(2,893)	(3,383)
Postretirement Plan
Net period benefit cost for the pension and postretirement plans
Interest cost	20	26	39	52
Amortization of prior service cost	(19)	(19)	(38)	(38)
Amortization of actuarial loss (gain)	0	(1)	0	(2)
Total net periodic pension cost	$ 1	$ 6	$ 2	$ 13

Retirement Plans (Details Textu

Retirement Plans (Details Textuals) (Details) - USD ($) $ in Millions	Feb. 14, 2020	Jun. 14, 2019	Jun. 30, 2020	Jun. 30, 2019
Huntington National Bank
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Effective Date of Acquisition		Jun. 14, 2019
First Staunton Bancshares [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Effective Date of Acquisition	Feb. 14, 2020
RAP
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Defined Benefit Plan, Description			The Corporation has a noncontributory defined benefit retirement account plan, the RAP, covering substantially all employees who meet participation requirements. The benefits are based primarily on years of service and the employee’s compensation paid. Employees of acquired entities generally participate in the RAP after consummation of the business combinations. Any retirement plans of acquired entities are typically merged into the RAP after completion of the mergers, and credit is usually given to employees for years of service at the acquired institution for vesting and eligibility purposes.
Defined Benefit Plan, Plan Assets, Contributions by Employer			$ 0	$ 0

Segment Reporting (Details)

Segment Reporting (Details) - USD ($) $ in Thousands	3 Months Ended				6 Months Ended
	Jun. 30, 2020	Mar. 31, 2020	Jun. 30, 2019	Mar. 31, 2019	Jun. 30, 2020	Jun. 30, 2019
Segment Income Statement Data Abstract
Net interest income	$ 189,872		$ 213,619		$ 392,814	$ 429,167
Net intersegment interest income (expense)	0		0		0	0
Segment net interest income	189,872		213,619		392,814	429,167
Noninterest income	254,490		95,837		352,796	187,040
Total revenue	444,362		309,457		745,610	616,206
Credit provision	61,000		8,000		114,001	14,000
Noninterest expense	183,407		197,779		375,598	389,450
Income (loss) before income taxes	199,955		103,678		256,012	212,756
Income tax expense (benefit)	51,238		19,017		61,457	41,409
Net income	148,718	$ 45,838	84,661	$ 86,686	194,555	171,347
Segment Balance Sheet Data
Allocated goodwill					1,107,902	1,176,019
Gain (Loss) on Disposition of Assets for Financial Service Operations	157,361		871		157,284	1,438
Risk Management and Shared Services
Segment Balance Sheet Data
Gain (Loss) on Disposition of Assets for Financial Service Operations	163,000				163,000
Operating Segments | Corporate and Commercial Specialty
Segment Income Statement Data Abstract
Net interest income	98,824		114,232		206,577	228,162
Net intersegment interest income (expense)	6,889		(13,326)		(3,856)	(28,881)
Segment net interest income	105,713		100,906		202,721	199,281
Noninterest income	30,691		31,267		65,124	58,414
Total revenue	136,405		132,174		267,845	257,695
Credit provision	13,713		12,585		25,885	25,169
Noninterest expense	50,837		56,450		102,098	111,383
Income (loss) before income taxes	71,855		63,139		139,862	121,144
Income tax expense (benefit)	13,446		12,244		26,117	23,411
Net income	58,410		50,895		113,745	97,732
Segment Balance Sheet Data
Allocated goodwill					530,144	530,106
Operating Segments | Community, Consumer, and Business
Segment Income Statement Data Abstract
Net interest income	73,120		77,013		148,047	156,699
Net intersegment interest income (expense)	14,340		22,804		33,025	43,551
Segment net interest income	87,459		99,817		181,072	200,250
Noninterest income	58,557		62,123		116,207	120,398
Total revenue	146,017		161,940		297,279	320,648
Credit provision	5,429		4,626		10,537	9,311
Noninterest expense	122,290		119,694		238,721	232,612
Income (loss) before income taxes	18,298		37,620		48,021	78,725
Income tax expense (benefit)	3,843		7,900		10,084	16,532
Net income	14,455		29,720		37,936	62,193
Segment Balance Sheet Data
Allocated goodwill					577,758	645,913
Operating Segments | Risk Management and Shared Services
Segment Income Statement Data Abstract
Net interest income	17,929		22,375		38,190	44,306
Net intersegment interest income (expense)	(21,229)		(9,478)		(29,169)	(14,671)
Segment net interest income	(3,301)		12,896		9,021	29,635
Noninterest income	165,242		2,447		171,465	8,228
Total revenue	161,941		15,343		180,486	37,863
Credit provision	41,858		(9,211)		77,579	(20,480)
Noninterest expense	10,280		21,634		34,779	45,456
Income (loss) before income taxes	109,802		2,919		68,129	12,887
Income tax expense (benefit)	33,950		(1,127)		25,255	1,466
Net income	75,853		4,047		42,874	11,422
Segment Balance Sheet Data
Allocated goodwill					0	0
Business Combination, Acquisition Related Costs	$ 518		$ 3,734		$ 2,238	$ 4,366

Segment Reporting (Details Text

Segment Reporting (Details Textuals) - segment	3 Months Ended	6 Months Ended
	Mar. 31, 2020	Jun. 30, 2020
Segment Reporting [Abstract]
Number of Reportable Segments		3
Description of Effect on Previously Reported Segment Information for Change in Composition of Reportable Segments	During the first quarter of 2020, the Corporation reassigned goodwill of approximately $4 million to the Corporate and Commercial Specialty segment from the Community, Consumer and Business segment as a result of a reorganization of the investment and fiduciary businesses. The goodwill reassigned was attributable to the Corporation's acquisition of Whitnell & Co. in 2017. Also effective in the first quarter of 2020, the marketing business unit, formerly part of the Risk Management and Shared Services segment, was reorganized under the Community, Consumer and Business segment.

Accumulated Other Comprehensi_3

Accumulated Other Comprehensive Income (Loss) (Details) - USD ($) $ in Thousands	3 Months Ended				6 Months Ended
	Jun. 30, 2020	Mar. 31, 2020	Jun. 30, 2019	Mar. 31, 2019	Jun. 30, 2020	Jun. 30, 2019
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Beginning Balance		$ (33,183)			$ (33,183)
Investment securities losses (gains), net	$ (11)		$ (13,636)		(90)	$ (13,636)
Personnel expense	(111,350)		(123,228)		(225,551)	(243,279)
Interest income	(776)		(218)		(1,332)	(288)
Total other comprehensive income (loss)	15,054	16,209	44,311	$ 21,597	31,263	65,909
Ending Balance	(1,920)				(1,920)
Investment Securities Available For Sale
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Beginning Balance	19,620	3,989	(54,065)	(75,643)	3,989	(75,643)
Other comprehensive income (loss) before reclassifications	21,641		59,476		48,060	89,966
Investment securities losses (gains), net	(3,096)		(463)		(9,214)	(2,143)
Personnel expense	0		0		0	0
Other expense	0		0		0	0
Interest income	776		218		1,332	288
Income tax (expense) benefit	(4,841)		(14,940)		(10,066)	(22,242)
Total other comprehensive income (loss)	14,481		44,292		30,112	65,869
Ending Balance	34,101	19,620	(9,773)	(54,065)	34,101	(9,773)
Defined Benefit Pension and Postretirement Obligations
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Beginning Balance	(36,595)	(37,172)	(49,310)	(49,330)	(37,172)	(49,330)
Other comprehensive income (loss) before reclassifications	0		0		0	0
Investment securities losses (gains), net	0		0		0	0
Personnel expense	(38)		(38)		(75)	(75)
Other expense	803		64		1,610	128
Interest income	0		0		0	0
Income tax (expense) benefit	(192)		(7)		(385)	(13)
Total other comprehensive income (loss)	573		20		1,150	40
Ending Balance	(36,021)	(36,595)	(49,290)	(49,310)	(36,021)	(49,290)
Accumulated Other Comprehensive Income (Loss)
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Beginning Balance	(16,974)	(33,183)	(103,375)	(124,972)	(33,183)	(124,972)
Other comprehensive income (loss) before reclassifications	21,641		59,476		48,060	89,966
Investment securities losses (gains), net	(3,096)		(463)		(9,214)	(2,143)
Personnel expense	(38)		(38)		(75)	(75)
Other expense	803		64		1,610	128
Interest income	776		218		1,332	288
Income tax (expense) benefit	(5,032)		(14,947)		(10,450)	(22,255)
Total other comprehensive income (loss)	15,054	16,209	44,311	21,597	31,263	65,909
Ending Balance	$ (1,920)	$ (16,974)	$ (59,063)	$ (103,375)	$ (1,920)	$ (59,063)

Revenue from Contracts with C_3

Revenue from Contracts with Customers (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Disaggregation of Revenue [Line Items]
Noninterest Income (in-scope of Topic 606)	$ 66,933	$ 72,703	$ 138,282	$ 145,441
Noninterest Income (out-of-scope of Topic 606)	187,557	23,134	214,515	41,599
Total noninterest income	254,490	95,837	352,796	187,040
Gain (Loss) on Disposition of Assets for Financial Service Operations	157,361	871	157,284	1,438
Insurance commissions and fees
Disaggregation of Revenue [Line Items]
Noninterest Income (in-scope of Topic 606)	22,430	22,985	45,038	48,449
Wealth management fees(a)
Disaggregation of Revenue [Line Items]
Noninterest Income (in-scope of Topic 606)	20,916	20,691	41,732	40,870
Service charges and deposit account fees
Disaggregation of Revenue [Line Items]
Noninterest Income (in-scope of Topic 606)	11,484	15,426	26,706	30,542
Card-based fees(b)
Disaggregation of Revenue [Line Items]
Noninterest Income (in-scope of Topic 606)	8,922	10,177	18,529	19,472
Other revenue
Disaggregation of Revenue [Line Items]
Noninterest Income (in-scope of Topic 606)	3,181	3,424	6,277	6,108
Corporate and Commercial Specialty
Disaggregation of Revenue [Line Items]
Noninterest Income (in-scope of Topic 606)	20,690	20,047	41,426	39,387
Noninterest Income (out-of-scope of Topic 606)	10,002	11,220	23,698	19,026
Corporate and Commercial Specialty | Insurance commissions and fees
Disaggregation of Revenue [Line Items]
Noninterest Income (in-scope of Topic 606)	47	49	123	174
Corporate and Commercial Specialty | Wealth management fees(a)
Disaggregation of Revenue [Line Items]
Noninterest Income (in-scope of Topic 606)	15,814	15,369	31,621	30,469
Corporate and Commercial Specialty | Service charges and deposit account fees
Disaggregation of Revenue [Line Items]
Noninterest Income (in-scope of Topic 606)	4,307	3,309	7,859	6,806
Corporate and Commercial Specialty | Card-based fees(b)
Disaggregation of Revenue [Line Items]
Noninterest Income (in-scope of Topic 606)	228	455	743	889
Corporate and Commercial Specialty | Other revenue
Disaggregation of Revenue [Line Items]
Noninterest Income (in-scope of Topic 606)	294	865	1,081	1,049
Community, Consumer, and Business
Disaggregation of Revenue [Line Items]
Noninterest Income (in-scope of Topic 606)	46,163	52,381	96,698	105,479
Noninterest Income (out-of-scope of Topic 606)	12,394	9,742	19,509	14,919
Community, Consumer, and Business | Insurance commissions and fees
Disaggregation of Revenue [Line Items]
Noninterest Income (in-scope of Topic 606)	22,381	22,933	44,910	48,268
Community, Consumer, and Business | Wealth management fees(a)
Disaggregation of Revenue [Line Items]
Noninterest Income (in-scope of Topic 606)	5,102	5,321	10,111	10,402
Community, Consumer, and Business | Service charges and deposit account fees
Disaggregation of Revenue [Line Items]
Noninterest Income (in-scope of Topic 606)	7,173	12,104	18,838	23,703
Community, Consumer, and Business | Card-based fees(b)
Disaggregation of Revenue [Line Items]
Noninterest Income (in-scope of Topic 606)	8,647	9,674	17,693	18,486
Community, Consumer, and Business | Other revenue
Disaggregation of Revenue [Line Items]
Noninterest Income (in-scope of Topic 606)	2,861	2,349	5,147	4,621
Risk Management and Shared Services
Disaggregation of Revenue [Line Items]
Noninterest Income (in-scope of Topic 606)	80	275	158	574
Noninterest Income (out-of-scope of Topic 606)	165,161	2,172	171,307	7,653
Risk Management and Shared Services | Insurance commissions and fees
Disaggregation of Revenue [Line Items]
Noninterest Income (in-scope of Topic 606)	3	3	6	7
Risk Management and Shared Services | Service charges and deposit account fees
Disaggregation of Revenue [Line Items]
Noninterest Income (in-scope of Topic 606)	4	14	10	32
Risk Management and Shared Services | Card-based fees(b)
Disaggregation of Revenue [Line Items]
Noninterest Income (in-scope of Topic 606)	47	48	94	97
Risk Management and Shared Services | Other revenue
Disaggregation of Revenue [Line Items]
Noninterest Income (in-scope of Topic 606)	26	210	49	438
Operating Segments [Member] | Corporate and Commercial Specialty
Disaggregation of Revenue [Line Items]
Total noninterest income	30,691	31,267	65,124	58,414
Operating Segments [Member] | Community, Consumer, and Business
Disaggregation of Revenue [Line Items]
Total noninterest income	58,557	62,123	116,207	120,398
Operating Segments [Member] | Risk Management and Shared Services
Disaggregation of Revenue [Line Items]
Total noninterest income	$ 165,242	$ 2,447	$ 171,465	$ 8,228

Leases Lease, Cost and Cash Flo

Leases Lease, Cost and Cash Flows (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Leases [Abstract]
Operating Lease Costs	$ 2,631	$ 2,888	$ 5,254	$ 5,793
Finance Lease Costs	31	0	67	0
Operating Lease Cash Flows	2,700	2,762	5,432	5,570
Finance Lease Cash Flows	$ 21	$ 0	$ 42	$ 0

Leases Components of Lease Expe

Leases Components of Lease Expense (Details) - USD ($) $ in Thousands	Jun. 30, 2020	Dec. 31, 2019
Leases [Abstract]
Operating lease right-of-use asset	$ 39,674	$ 45,381
Finance lease right-of-use asset	1,154	2,188
Operating lease liability	43,377	49,292
Finance lease liability	$ 1,202	$ 2,209

Leases Operating Lease Informat

Leases Operating Lease Information (Details) - USD ($) $ in Thousands	Jun. 30, 2020	Dec. 31, 2019
Lessee, Lease, Description [Line Items]
Lessee, Operating Lease, Liability, Payments, Due	$ 48,961	$ 55,580
Operating Lease, Weighted Average Remaining Lease Term	6 years 7 months 9 days	6 years 9 months 29 days
Operating Lease, Weighted Average Discount Rate, Percent	3.31%	3.32%
Finance Lease, Liability, Payment, Due	$ 1,225	$ 4,827
Finance Lease, Weighted Average Remaining Lease Term	2 years 1 month 20 days	39 years 8 months 1 day
Finance Lease, Weighted Average Discount Rate, Percent	1.05%	3.99%
Equipment
Lessee, Lease, Description [Line Items]
Lessee, Operating Lease, Liability, Payments, Due	$ 5	$ 46
Operating Lease, Weighted Average Remaining Lease Term	8 months 8 days	9 months 29 days
Operating Lease, Weighted Average Discount Rate, Percent	2.72%	2.72%
Retail and corporate offices
Lessee, Lease, Description [Line Items]
Lessee, Operating Lease, Liability, Payments, Due	$ 42,293	$ 48,940
Operating Lease, Weighted Average Remaining Lease Term	6 years 2 months 19 days	6 years 5 months 26 days
Operating Lease, Weighted Average Discount Rate, Percent	3.35%	3.34%
Land
Lessee, Lease, Description [Line Items]
Lessee, Operating Lease, Liability, Payments, Due	$ 6,663	$ 6,594
Operating Lease, Weighted Average Remaining Lease Term	9 years 3 months 18 days	9 years 6 months 25 days
Operating Lease, Weighted Average Discount Rate, Percent	3.08%	3.21%
Finance Lease, Liability, Payment, Due	$ 1,225	$ 4,827
Finance Lease, Weighted Average Remaining Lease Term	2 years 1 month 20 days	39 years 8 months 1 day
Finance Lease, Weighted Average Discount Rate, Percent	1.05%	3.99%

Leases Amortization of Operatin

Leases Amortization of Operating Lease Liabilities (Details) - USD ($) $ in Thousands	Jun. 30, 2020	Dec. 31, 2019
Operating Leases
Six Months Ending December 31, 2020	$ 3,065
2021	10,387
2022	8,066
2023	5,810
2024	5,108
Beyond 2024	16,526
Total lease payments	48,961	$ 55,580
Less: interest	5,584
Present value of lease payments	43,377	49,292
Finance Leases
Six Months Ending December 31, 2020	80
2021	172
2022	973
2023	0
2024	0
Beyond 2024	0
Total lease payments	1,225	4,827
Less: interest	23
Present value of lease payments	1,202	$ 2,209
Total Leases
Six Months Ending December 31, 2020	3,145
2021	10,559
2022	9,039
2023	5,810
2024	5,108
Beyond 2024	16,526
Total lease payments	50,187
Less: interest	5,607
Present value of lease payments	$ 44,579

Leases (Details Textuals)

Leases (Details Textuals) - USD ($) $ in Millions	Jun. 30, 2020	Dec. 31, 2019
Lessee, Lease, Description [Line Items]
Additional operating leases	$ 18	$ 16
Minimum
Lessee, Lease, Description [Line Items]
Operating lease terms	1 year
Additional operating lease terms	3 years
Maximum
Lessee, Lease, Description [Line Items]
Operating lease terms	42 years
Additional operating lease terms	6 years