Associated Banc-Corp (ASB) 10-Q 28 Apr 22 2022 Q1 Quarterly report Financial data

Document and Entity Information

Document and Entity Information - shares	3 Months Ended
	Mar. 31, 2022	Apr. 25, 2022
Entity Information [Line Items]
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Mar. 31, 2022
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		150,043,865
Entity Central Index Key	0000007789
Amendment Flag	false
Document Fiscal Year Focus	2022
Document Fiscal Period Focus	Q1
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 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	Mar. 31, 2022	Dec. 31, 2021
Assets
Cash and due from banks	$ 334,138	$ 343,831
Interest-bearing deposits in other financial institutions	166,929	681,684
Debt Securities, Available-for-sale		4,332,015
Investment securities HTM, net, at amortized cost	3,939,855	2,238,947
Equity securities	18,560	18,352
Federal Home Loan Bank and Federal Reserve Bank stocks, at cost	168,281	168,281
Residential loans held for sale	91,582	136,638
Loans	24,531,926	24,224,949
Allowance for loan losses	(279,058)	(280,015)
Loans, net	24,252,867	23,944,934
Tax credit and other investments	284,561	293,733
Premises and equipment, net	387,550	385,173
Bank and corporate owned life insurance	679,538	680,021
Goodwill	1,104,992	1,104,992
Other intangible assets, net	55,890	58,093
Mortgage servicing rights, net(a)	67,015	54,862
Interest receivable	83,120	80,528
Other assets	540,218	582,168
Total assets	34,955,900	35,104,253
Liabilities and Stockholders' Equity
Noninterest-bearing demand deposits	8,315,699	8,504,077
Interest-bearing deposits	20,089,710	19,962,353
Total deposits	28,405,409	28,466,430
Federal funds purchased and securities sold under agreements to repurchase	368,768	319,532
Commercial paper	30,593	34,730
FHLB advances	1,537,948	1,621,047
Allowance for unfunded commitments	38,776	39,776
Accrued expenses and other liabilities	376,322	348,560
Total liabilities	31,007,613	31,079,399
Stockholders’ Equity
Preferred equity	193,195	193,195
Common stock	1,752	1,752
Surplus	1,708,104	1,713,851
Retained earnings	2,715,118	2,672,601
Accumulated other comprehensive (loss)	(137,024)	(10,317)
Treasury stock, at cost	(532,858)	(546,229)
Total common equity	3,755,092	3,831,658
Total stockholders’ equity	3,948,287	4,024,853
Total liabilities and stockholders’ equity	$ 34,955,900	$ 35,104,253
Preferred shares authorized (par value $1.00 per share)	750,000	750,000
Preferred shares issued and outstanding	200,000	200,000
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	150,037,780	149,342,641
Preferred shares, par value	$ 1	$ 1
Common shares, par value	$ 0.01	$ 0.01
Investment securities AFS, at fair value	$ 2,780,803	$ 4,332,015
Fair Value, Inputs, Level 2
Assets
Debt Securities, Available-for-sale	2,664,671	4,209,058
Other long-term funding	$ 249,797	$ 249,324

Consolidated Balance Sheets (Pa

Consolidated Balance Sheets (Parenthetical) - $ / shares	Mar. 31, 2022	Dec. 31, 2021
Preferred shares, par value	$ 1	$ 1
Common shares, par value	$ 0.01	$ 0.01

Consolidated Statements of Inco

Consolidated Statements of Income - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Interest income
Interest and fees on loans	$ 167,697	$ 174,049
Interest and dividends on investment securities
Taxable	16,472	7,014
Tax-exempt	16,108	14,162
Other interest	1,993	1,694
Total interest income	202,270	196,920
Interest expense
Interest on deposits	3,571	5,909
Interest on federal funds purchased and securities sold under agreements to repurchase	38	26
Interest on other short-term funding	1	6
Interest on FHLB advances	8,182	9,493
Interest on long-term funding	2,730	5,585
Total interest expense	14,522	21,018
Net interest income	187,747	175,902
Provision for credit losses	(3,990)	(23,004)
Net interest income after provision for credit losses	191,737	198,906
Noninterest income
Noninterest Income In Scope of Topic 606	52,344	51,762
Capital markets, net	8,646	8,118
Mortgage banking, net	8,391	23,925
Bank and corporate owned life insurance	2,071	2,702
Asset gains, net	188	4,809
Gains on sale of branches, net(a)	0	1,002
Gain (Loss) on Sale of Debt Investments	21	(39)
Other	2,198	3,216
Total noninterest income	74,467	95,343
Noninterest expense
Personnel	104,811	104,026
Technology	21,485	20,740
Occupancy	16,080	16,156
Business development and advertising	4,954	4,395
Equipment	4,960	5,518
Legal and professional	5,087	6,530
Loan and foreclosure costs	2,014	2,220
FDIC assessment	5,100	4,750
Other intangible amortization	2,203	2,236
Other	6,597	8,775
Total noninterest expense	173,292	175,347
Income before income taxes	92,912	118,903
Income tax expense	18,650	24,602
Net income	74,262	94,301
Preferred stock dividends	2,875	5,207
Net income available to common equity	$ 71,387	$ 89,094
Earnings per common share
Basic	$ 0.48	$ 0.58
Diluted	$ 0.47	$ 0.58
Average common shares outstanding
Basic	148,781	152,355
Diluted	150,492	153,688
Wealth management fees
Noninterest income
Noninterest Income In Scope of Topic 606	$ 22,404	$ 22,414
Service charges and deposit account fees
Noninterest income
Noninterest Income In Scope of Topic 606	16,856	14,855
Card-based fees
Noninterest income
Noninterest Income In Scope of Topic 606	9,949	9,764
Card-based fees	9,926	9,743
Other fee-based revenue
Noninterest income
Noninterest Income In Scope of Topic 606	3,135	4,729
Card-based fees	3,766	4,596
Operating Segments | Risk Management and Shared Services
Interest expense
Net interest income	27,570	14,465
Provision for credit losses	(21,300)	(45,612)
Noninterest income
Total noninterest income	3,470	6,184
Noninterest expense
Total noninterest expense	18,073	19,546
Income before income taxes	6,909	27,156
Income tax expense	2,501	6,890
Net income	$ 4,409	$ 20,266

Consolidated Statements of Comp

Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Statement of Comprehensive Income [Abstract]
Net income	$ 74,262	$ 94,301
Investment securities AFS
Net unrealized (losses)	(103,284)	(23,979)
Net unrealized (losses) on AFS securities transferred to HTM securities	(67,604)	0
Amortization of net unrealized losses on AFS securities transferred to HTM securities	1,108	518
Reclassification adjustment for net losses (gains) realized in net income	(21)	39
Income tax benefit	43,098	5,851
Other comprehensive (loss) on AFS securities	(126,702)	(17,571)
Defined benefit pension and postretirement obligations
Amortization of prior service cost	(81)	(37)
Amortization of actuarial loss	74	1,050
Income tax (expense) benefit	2	(253)
Other comprehensive income (loss) on pension and postretirement obligations	(6)	760
Total other comprehensive (loss)	(126,708)	(16,811)
Comprehensive income (loss)	$ (52,445)	$ 77,490

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, 2020	$ 4,090,933									$ 353,512		$ 1,752		$ 1,720,329		$ 2,458,920			$ 12,618		$ (456,198)
Comprehensive income (loss)
Net income	94,301															94,301
Other comprehensive (loss)	(16,811)																		(16,811)
Comprehensive income (loss)	77,490
Common stock issued
Shares Issued, Value, Share-based Payment Arrangement, after Forfeiture	10,556													(16,986)		0					27,542
Purchase of treasury stock,				$ (3,593)	$ (17,973)																		$ (3,593)	$ (17,973)
Cash dividends
Common stock	(27,870)															(27,870)
Preferred stock(b)	(5,207)															(5,207)
Stock-based compensation expense, net	3,444													3,444
Ending balance at Mar. 31, 2021	4,127,780									353,512		1,752		1,706,786		2,520,144			(4,193)		(450,222)
Cash dividends
Preferred Stock, Dividends, Per Share, Cash Paid						$ 0.3828125	$ 0.3359375	$ 0.3671875	$ 0.3515625
Beginning balance at Dec. 31, 2021	4,024,853		$ 4,026,566							193,195	$ 193,195	1,752	$ 1,752	1,713,851	$ 1,713,851	2,672,601		$ 2,674,314	(10,317)	$ (10,317)	(546,229)	$ (546,229)
Beginning balance (Accounting Standards Update 2016-13) at Dec. 31, 2021		$ 1,713															$ 1,713
Comprehensive income (loss)
Net income	74,262															74,262
Other comprehensive (loss)	(126,708)																		(126,708)
Comprehensive income (loss)	(52,445)
Common stock issued
Shares Issued, Value, Share-based Payment Arrangement, after Forfeiture	6,654													(11,911)							18,565
Purchase of treasury stock,				$ (5,193)																			$ (5,193)
Cash dividends
Common stock	(30,583)															(30,583)
Preferred stock(b)	(2,875)															(2,875)
Stock-based compensation expense, net	6,164													6,164
Ending balance at Mar. 31, 2022	$ 3,948,287									$ 193,195		$ 1,752		$ 1,708,104		$ 2,715,118			$ (137,024)		$ (532,858)

Consolidated Statements of Cash

Consolidated Statements of Cash Flows - USD ($) $ in Thousands	3 Months Ended		12 Months Ended
	Mar. 31, 2022	Mar. 31, 2021	Dec. 31, 2021
Cash Flow From Operating Activities
Net income	$ 74,262	$ 94,301
Adjustments to reconcile net income to net cash provided by (used in) operating activities
Provision for credit losses	(3,990)	(23,004)
Depreciation and amortization	11,680	12,038
Change in MSRs valuation(a)	(9,451)	(10,578)
Amortization of other intangible assets	2,203	2,236
Amortization and accretion on earning assets, funding, and other, net	5,338	7,941
Net amortization of tax credit investments	8,535	8,301
Losses (gains) on sales of investment securities, net	(21)	39
Asset (gains), net	(188)	(4,809)
(Gains) on sale of branch, net	0	(1,002)
(Gain) loss on mortgage banking activities, net	4,183	(10,326)
Mortgage loans originated and acquired for sale	(252,113)	(412,645)
Proceeds from sales of mortgage loans held for sale	296,089	400,135
Changes in certain assets and liabilities
(Increase) decrease in interest receivable	(2,592)	3,797
(Decrease) in interest payable	(1,917)	(8,694)
(Decrease) in expense payable	(46,737)	(12,818)
(Increase) decrease in net derivative position	152,545	69,829
Net change in other assets and other liabilities	8,292	43,027
Net cash provided by operating activities	246,119	157,768
Cash Flow From Investing Activities
Net decrease (increase) in loans	(305,878)	274,733
Purchases of
AFS securities	(409,376)	(809,140)
HTM securities	(135,301)	(37,215)
Federal Home Loan Bank and Federal Reserve Bank stocks and equity securities	(1)	(1)
Premises, equipment, and software, net of disposals	(17,141)	(6,477)
Proceeds from
Sales of AFS and equity securities	742	51,295
Prepayments, calls, and maturities of AFS securities	167,986	419,235
Prepayments, calls, and maturities of HTM securities	51,206	97,196
Sales, prepayments, calls, and maturities of other assets	18,012	8,525
Net change in tax credit and alternative investments	(10,293)	(12,990)
Net cash (used in) investing activities	(640,045)	(12,354)
Cash Flow From Financing Activities
Net increase (decrease) in deposits	(60,949)	1,225,867
Net decrease in deposits due to branch sales	0	(31,083)
Net increase (decrease) in short-term funding	45,098	(62,639)
Net increase in short-term FHLB advances	320,000	0
Repayment of long-term FHLB advances	(414,578)	(2,954)
Proceeds from long-term FHLB advances	11,506	251
(Repayment) proceeds of finance lease principal	399	(37)
Proceeds from issuance of common stock for stock-based compensation plans	6,654	10,556
Cash dividends on common stock	(30,583)	(27,870)
Cash dividends on preferred stock	(2,875)	(5,207)
Net cash provided by (used in) financing activities	(130,521)	1,085,319
Net increase (decrease) in cash and cash equivalents	(524,447)	1,230,732
Cash and cash equivalents at beginning of period	1,025,515	716,048	$ 716,048
Cash and cash equivalents at end of period(b)	501,068	1,946,780	1,025,515
Supplemental disclosures of cash flow information
Cash paid for interest	16,267	29,258
Cash (received from) income and franchise taxes	(1,471)	(114)
Loans and bank premises transferred to OREO	426	15,426
Capitalized mortgage servicing rights	3,042	3,348
Loans transferred into held for sale from portfolio, net	2,644	5,582
Transfer of AFS securities to HTM securities, Fair Value	1,621,990	0
Unsettled trades to purchase securities	4,246	3,000
Restricted Cash and Cash Equivalents
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Total	501,068	1,946,780	$ 1,025,515
Retained Earnings
Cash Flow From Operating Activities
Net income	74,262	94,301
ABRC
Proceeds from
Sales, prepayments, calls, and maturities of other assets		2,484
Whitnell
Proceeds from
Sales, prepayments, calls, and maturities of other assets	0
Performance/Service Based RSAs, RSA,
Cash Flow From Financing Activities
Payments for Repurchase of Common Stock	(5,193)	(3,593)
Board Authorized Purchase Program [Member]
Cash Flow From Financing Activities
Payments for Repurchase of Common Stock	$ 0	$ (17,973)

Basis of Presentation

Basis of Presentation	3 Months Ended
	Mar. 31, 2022
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 and MSRs valuation. 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	3 Months Ended
	Mar. 31, 2022
Business Combinations [Abstract]
Acquisitions and Dispositions	Acquisitions and Dispositions Acquisitions: The Corporation did not have any acquisitions during the first three months of 2022 or during 2021. Dispositions: 2021 On March 1, 2021, the Corporation closed on the sale of its wealth management subsidiary, Whitnell, to Rockefeller for a purchase price of $8 million. Associated reported a first quarter 2021 pre-tax gain of $2 million, included in asset gains, net on the consolidated statements of income, in conjunction with the sale.

Summary of Significant Accounti

Summary of Significant Accounting Policies	3 Months Ended
	Mar. 31, 2022
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 2021 Annual Report on Form 10-K. As a result of the irrevocable election to account for MSRs under the fair value measurement methodology, as permitted under ASC 860-50-35-3, there has been a change to the Corporation's significant accounting policies since December 31, 2021, which is described below. Mortgage Servicing Rights The Corporation sells residential mortgage loans in the secondary market and typically retains the rights to service the loans sold. Upon sale, a MSRs asset is capitalized, which represents the then current fair value of future net cash flows expected to be realized for performing servicing activities. On January 1, 2022, the Corporation made the irrevocable election to account for its MSRs asset under the fair value measurement method. As a result of the change, a cumulative effect adjustment of $2 million, increasing retained earnings on the consolidated balance sheets, was recognized. Under this methodology, changes in the fair value are recognized in earnings as they occur through mortgage banking, net on the consolidated statements of income. MSRs are not traded in active markets. A cash flow model is used to determine fair value. Key assumptions and estimates, including projected prepayment speeds, assumed servicing costs, ancillary income, costs to service delinquent loans, costs of foreclosure, and discount rates with option-adjusted spreads, used by this model are based on current market sources. Assumptions used to value MSRs are considered significant unobservable inputs. A separate third-party model is used to estimate prepayment speeds based on interest rates, housing turnover rates, estimated loan curtailment, anticipated defaults and other relevant factors. Fair value estimates from outside sources are received periodically to corroborate the results of the valuation model. New Accounting Pronouncements Adopted There were no applicable material accounting pronouncements adopted by the Corporation since December 31, 2021. Future Accounting Pronouncements The expected impact of applicable material accounting pronouncements recently issued or proposed but not yet required to be adopted are discussed in the table below. To the extent that the adoption of new accounting standards materially affects the Corporation's financial condition, results of operations, or liquidity, the impacts are discussed in the applicable sections of this financial review. Standard Description Date of anticipated adoption Effect on financial statements ASU 2022-02 Financial Instruments-Credit Losses (Topic 326): Troubled Debt Restructurings and Vintage Disclosures The FASB issued these amendments to eliminate accounting guidance for TDRs by creditors in Subtopic 310-40, Receivables-Troubled Debt Restructurings by Creditors, while enhancing disclosure requirements for certain loan refinancings and restructurings by creditors when a borrower is experiencing financial difficulty, and to require that an entity disclose current-period gross writeoffs by year of origination for financing receivables and net investments in leases within the scope of Subtopic 326-20, Financial Instruments-Credit Losses-Measured at Amortized Cost. The amendments in this Update are effective for fiscal years beginning after December 15, 2022, including interim periods within those fiscal years, and should be applied prospectively, except as provided in the next sentence. For the transition method related to the recognition and measurement of TDRs, an entity has the option to apply a modified retrospective transition method, resulting in a cumulative-effect adjustment to retained earnings in the period of adoption. Early adoption is permitted if an entity has adopted the amendments in Update 2016-03, including adoption in an interim period. 1st Quarter 2023 Adoption of this amendment is not expected to have a material impact on the Corporation's results of operation, financial position or liquidity, but will result in additional disclosure requirements related to gross charge offs by vintage year.

Earnings Per Common Share

Earnings Per Common Share	3 Months Ended
	Mar. 31, 2022
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 Mar 31, (In Thousands, except per share data) 2022 2021 Net income $ 74,262 $ 94,301 Preferred stock dividends (2,875) (5,207) Net income available to common equity $ 71,387 $ 89,094 Common shareholder dividends (30,372) (27,661) Unvested share-based payment awards (211) (209) Undistributed earnings $ 40,804 $ 61,224 Undistributed earnings allocated to common shareholders $ 40,548 $ 60,836 Undistributed earnings allocated to unvested share-based payment awards 256 387 Undistributed earnings $ 40,804 $ 61,224 Basic Distributed earnings to common shareholders $ 30,372 $ 27,661 Undistributed earnings allocated to common shareholders 40,548 60,836 Total common shareholders earnings, basic $ 70,920 $ 88,497 Diluted Distributed earnings to common shareholders $ 30,372 $ 27,661 Undistributed earnings allocated to common shareholders 40,548 60,836 Total common shareholders earnings, diluted $ 70,920 $ 88,497 Weighted average common shares outstanding 148,781 152,355 Effect of dilutive common stock awards 1,711 1,333 Diluted weighted average common shares outstanding 150,492 153,688 Basic earnings per common share $ 0.48 $ 0.58 Diluted earnings per common share $ 0.47 $ 0.58 Anti-dilutive common stock options of approximately 2 million and 3 million for the three months ended March 31, 2022 and 2021, respectively, were excluded from the earnings per common share calculation.

Stock-Based Compensation

Stock-Based Compensation	3 Months Ended
	Mar. 31, 2022
Retirement Benefits [Abstract]
Stock-Based Compensation	Stock-Based Compensation 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 colleagues who meet the definition of retirement eligible under the 2017 Incentive Compensation Plan and the 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. A summary of the Corporation’s stock option activity for the three months ended March 31, 2022 is presented below: Stock Options Shares (a) Weighted Average Weighted Average Remaining Contractual Term Aggregate Intrinsic Value (a) Outstanding at December 31, 2021 4,814 $ 20.72 5.96 years $ 12,532 Exercised (362) 17.65 Outstanding at March 31, 2022 4,452 $ 20.97 5.85 years $ 11,138 Options Exercisable at March 31, 2022 3,775 $ 21.29 5.52 years $ 8,661 (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 both the three months ended March 31, 2022 and 2021, the intrinsic value of stock options exercised was $3 million. For the three months ended March 31, 2022, the total fair value of stock options vested was $2 million compared to $3 million for the three months ended March 31, 2021. The Corporation recognized compensation expense for the vesting of stock options of approximately $241,000 for the three months ended March 31, 2022, compared to approximately $403,000 for the three months ended March 31, 2021. Compensation expense for the first quarter of 2022 related to accelerated vesting of stock options for retirement eligible colleagues was immaterial. At March 31, 2022, the Corporation had $1 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 determined by the Corporation's Compensation and Benefits Committee, 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 three months ended March 31, 2022: Restricted Stock Awards Shares (a) Weighted Average Outstanding at December 31, 2021 2,635 $ 19.87 Granted 650 23.69 Vested (618) 23.73 Forfeited (1) 21.97 Outstanding at March 31, 2022 2,666 $ 20.70 (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 2021 and 2022 will cliff-vest after the three 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, if any, 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	3 Months Ended
	Mar. 31, 2021
Investments, Debt and Equity Securities [Abstract]
Investment Securities	Investment Securities Investment securities are designated as AFS, HTM, or equity on the consolidated balance sheets at the time of purchase. The amortized cost and fair values of AFS and HTM securities at March 31, 2022 were as follows: ($ in Thousands) Amortized Gross Gross Fair Value Investment securities AFS U. S. Treasury securities $ 124,328 $ — $ (8,196) $ 116,132 Agency securities 15,000 — (800) 14,200 Obligations of state and political subdivisions (municipal securities) 368,831 3,764 (195) 372,401 Residential mortgage-related securities FNMA / FHLMC 1,993,893 937 (100,011) 1,894,819 GNMA 59,470 166 (726) 58,909 Commercial mortgage-related securities FNMA / FHLMC 19,290 496 — 19,786 GNMA 128,019 18 (1,278) 126,760 Asset backed securities FFELP 173,068 — (4,090) 168,978 SBA 5,865 33 (53) 5,845 Other debt securities 3,000 — (27) 2,973 Total investment securities AFS $ 2,890,763 $ 5,416 $ (115,376) $ 2,780,803 Investment securities HTM U. S. Treasury securities $ 998 $ — $ (34) $ 964 Obligations of state and political subdivisions (municipal securities) 1,696,536 32,201 (80,896) 1,647,842 Residential mortgage-related securities FNMA / FHLMC 956,470 35,739 (72,418) 919,790 GNMA 44,742 116 (643) 44,215 Private-label 384,016 13,460 (28,955) 368,521 Commercial mortgage-related securities FNMA/FHLMC 764,775 17,620 (88,784) 693,610 GNMA 92,383 1,032 (3,456) 89,959 Total investment securities HTM $ 3,939,920 $ 100,167 $ (275,186) $ 3,764,901 During the first quarter of 2022, the Corporation redesignated approximately $1.6 billion of mortgage-related securities from AFS to HTM. The reclassification of these investment securities was accounted for at fair value. Management elected to transfer these investment securities as the Corporation has the positive intent and ability to hold these investment securities to maturity. See Note 16 for additional information on the unrealized losses on investment securities transferred from AFS to HTM. The amortized cost and fair values of AFS and HTM securities at December 31, 2021 were as follows: ($ in Thousands) Amortized Gross Gross Fair Value Investment securities AFS U. S. Treasury securities $ 124,291 $ — $ (1,334) $ 122,957 Agency securities 15,000 — (103) 14,897 Obligations of state and political subdivisions (municipal securities) 381,517 18,940 — 400,457 Residential mortgage-related securities FNMA / FHLMC 2,709,399 3,729 (21,249) 2,691,879 GNMA 66,189 1,591 — 67,780 Private-label 332,028 31 (2,335) 329,724 Commercial mortgage-related securities FNMA / FHLMC 357,240 2,686 (9,302) 350,623 GNMA 165,439 1,360 — 166,799 Asset backed securities FFELP 177,974 475 (1,123) 177,325 SBA 6,594 39 (54) 6,580 Other debt securities 3,000 — (6) 2,994 Total investment securities AFS $ 4,338,671 $ 28,850 $ (35,506) $ 4,332,015 Investment securities HTM U. S. Treasury securities $ 1,000 $ 1 $ — $ 1,001 Obligations of state and political subdivisions (municipal securities) 1,628,759 113,179 (1,951) 1,739,988 Residential mortgage-related securities FNMA / FHLMC 34,347 1,792 — 36,139 GNMA 48,053 1,578 — 49,631 Commercial mortgage-related securities FNMA / FHLMC 425,937 122 (6,659) 419,400 GNMA 100,907 1,799 (200) 102,506 Total investment securities HTM $ 2,239,003 $ 118,471 $ (8,809) $ 2,348,664 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 AFS and HTM securities at March 31, 2022, are shown below: AFS HTM ($ in Thousands) Amortized Fair Amortized Fair Due in one year or less $ 5,167 $ 5,171 $ 18,432 $ 18,503 Due after one year through five years 89,914 87,185 34,156 34,343 Due after five years through ten years 378,692 374,733 163,456 164,057 Due after ten years 37,386 38,617 1,481,489 1,431,903 Total debt securities 511,159 505,706 1,697,534 1,648,806 Residential mortgage-related securities FNMA / FHLMC 1,993,893 1,894,819 956,470 919,790 GNMA 59,470 58,909 44,742 44,215 Private-label — — 384,016 368,521 Commercial mortgage-related securities FNMA / FHLMC 19,290 19,786 764,775 693,610 GNMA 128,019 126,760 92,383 89,959 Asset backed securities FFELP 173,068 168,978 — — SBA 5,865 5,845 — — Total investment securities $ 2,890,763 $ 2,780,803 $ 3,939,920 $ 3,764,901 Ratio of fair value to amortized cost 96.2 % 95.6 % On a quarterly basis, the Corporation refreshes the credit quality of each HTM security. The following table summarizes the credit quality indicators of HTM securities at amortized cost at March 31, 2022: ($ in Thousands) AAA AA A Not Rated Total U. S. Treasury securities $ 998 $ — $ — $ — $ 998 Obligations of state and political subdivisions (municipal securities) 762,066 920,883 12,692 895 1,696,536 Residential mortgage-related securities FNMA / FHLMC 956,470 — — — 956,470 GNMA 44,742 — — — 44,742 Private-label 384,016 — — — 384,016 Commercial mortgage-related securities FNMA / FHLMC 764,775 — — — 764,775 GNMA 92,383 — — — 92,383 Total HTM securities $ 3,005,450 $ 920,883 $ 12,692 $ 895 $ 3,939,920 The following table summarizes the credit quality indicators of HTM securities at amortized cost at December 31, 2021: ($ in Thousands) AAA AA A Not Rated Total U. S. Treasury securities $ 1,000 $ — $ — $ — $ 1,000 Obligations of state and political subdivisions (municipal securities) 702,399 914,591 10,873 896 1,628,759 Residential mortgage-related securities FNMA / FHLMC 34,347 — — — 34,347 GNMA 48,053 — — — 48,053 Commercial mortgage-related securities FNMA / FHLMC 425,937 — — — 425,937 GNMA 100,907 — — — 100,907 Total HTM securities $ 1,312,642 $ 914,591 $ 10,873 $ 896 $ 2,239,003 Investment securities gains (losses), net includes proceeds from the sale of AFS investment securities. The proceeds from the sale of AFS investment securities for the three months ended March 31, 2022 and 2021, are shown below: Three Months Ended Mar 31, ($ in Thousands) 2022 2021 Gross gains on AFS securities $ 21 $ 36 Gross (losses) on AFS securities — (75) Investment securities gains (losses), net 21 (39) Proceeds from sales of investment securities AFS $ 734 $ 51,295 During the first quarter of 2021, the Corporation sold $51 million of lower yielding U.S. Treasury and Agency securities at a slight loss to take advantage of the steeper yield curve by reinvesting the proceeds into similar but higher yielding, longer duration securities. Investment securities with a carrying value of $2.2 billion and $2.3 billion at March 31, 2022 and December 31, 2021, respectively, were pledged to secure certain deposits or for other purposes. Accrued interest receivable on HTM securities totaled $16 million and $15 million at March 31, 2022 and December 31, 2021, respectively. Accrued interest receivable on AFS securities totaled $8 million and $9 million at March 31, 2022 and December 31, 2021, respectively. Accrued interest receivable on both HTM and AFS securities is included in interest receivable on the consolidated balance sheets. There was no interest income reversed for investments going into nonaccrual at both March 31, 2022 and 2021. A security is considered past due once it is 30 days past due under the terms of the agreement. At both March 31, 2022 and December 31, 2021, the Corporation had no past due HTM securities. The allowance for credit losses on HTM securities was approximately $65,000 at March 31, 2022 and approximately $55,000 at December 31, 2021, attributable entirely to the Corporation's municipal securities, included in investment securities HTM, net, at amortized cost on the consolidated balance sheets. The Corporation also holds U.S. Treasury, municipal and mortgage-related securities issued by the U.S. government or a GSE which are backed by the full faith and credit of the U.S. government and, as a result, no allowance for credit losses has been recorded related to these securities. The following represents gross unrealized losses and the related fair value of AFS and HTM securities, aggregated by investment category and length of time individual securities have been in a continuous unrealized loss position, at March 31, 2022: Less than 12 months 12 months or more Total ($ in Thousands) Number Unrealized Fair Number Unrealized Fair Unrealized Fair Investment securities AFS U.S. Treasury securities 5 $ (7,346) $ 107,050 2 (850) $ 9,082 $ (8,196) $ 116,132 Agency securities 1 (800) 14,200 — — — (800) 14,200 Obligations of state and political subdivisions (municipal securities) 64 (195) 35,501 — — — (195) 35,501 Residential mortgage-related securities FNMA / FHLMC 88 (80,850) 1,617,123 8 (19,161) 235,380 (100,011) 1,852,503 GNMA 9 (726) 44,614 — — — (726) 44,614 GNMA commercial mortgage-related securities 31 (1,278) 113,831 — — — (1,278) 113,831 Asset backed securities FFELP 7 (1,955) 110,489 8 (2,135) 58,489 (4,090) 168,978 SBA — — — 8 (53) 2,763 (53) 2,763 Other debt securities 2 (27) 1,973 — — — (27) 1,973 Total 207 $ (93,177) $ 2,044,781 26 $ (22,199) $ 305,713 $ (115,376) $ 2,350,494 Investment securities HTM U.S. Treasury securities 1 $ (34) $ 964 — $ — $ — $ (34) $ 964 Obligations of state and political subdivisions (municipal securities) 346 (79,571) 576,351 5 (1,325) 5,100 (80,896) 581,451 Residential mortgage-related securities FNMA / FHLMC 51 (72,418) 896,284 — — — (72,418) 896,284 GNMA 46 (643) 33,468 — — — (643) 33,468 Private-label 18 (28,955) 368,521 — — — (28,955) 368,521 Commercial mortgage-related securities FNMA / FHLMC 15 (79,178) 342,543 7 (9,606) 72,787 (88,784) 415,331 GNMA 33 (3,456) 368,244 — — — (3,456) 368,244 Total 510 $ (264,255) $ 2,586,375 12 $ (10,930) $ 77,887 $ (275,186) $ 2,664,262 For comparative purposes, the following represents gross unrealized losses and the related fair value of AFS and HTM securities, aggregated by investment category and length of time that individual securities have been in a continuous unrealized loss position, at December 31, 2021: Less than 12 months 12 months or more Total ($ in Thousands) Number Unrealized Fair Number Unrealized Fair Unrealized Fair Investment securities AFS U.S. Treasury securities 7 $ (1,334) $ 122,957 — $ — $ — $ (1,334) $ 122,957 Agency securities 1 (103) 14,897 — — — (103) 14,897 Residential mortgage-related securities FNMA / FHLMC 74 (21,249) 2,172,837 — — — (21,249) 2,172,837 Private-label 12 (2,335) 248,617 — — — (2,335) 248,617 FNMA / FHLMC commercial mortgage-related securities 19 (9,302) 328,568 — — — (9,302) 328,568 Asset backed securities FFELP 4 (256) 64,282 8 (867) 62,576 (1,123) 126,858 SBA — — — 9 (54) 3,902 (54) 3,902 Other debt securities 3 (6) 2,994 — — — (6) 2,994 Total 120 $ (34,586) $ 2,955,152 17 $ (920) $ 66,478 $ (35,506) $ 3,021,630 Investment securities HTM Obligations of state and political subdivisions (municipal securities) 49 $ (1,951) $ 112,038 — $ — $ — $ (1,951) $ 112,038 Commercial mortgage-related securities FNMA/FHLMC 18 (6,272) 388,072 1 $ (387) $ 10,775 (6,659) 398,847 GNMA 5 (200) 33,468 — — — (200) 33,468 Total 72 $ (8,422) $ 533,577 1 $ (387) $ 10,775 $ (8,809) $ 544,352 The Corporation reviews the AFS 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 this 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 unrealized losses at March 31, 2022 represent credit deterioration as these unrealized losses are primarily attributable to changes in interest rates and the current market conditions. 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 bank 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. The Corporation had FHLB stock of $82 million at both March 31, 2022 and December 31, 2021. The Corporation had Federal Reserve Bank stock of $87 million at both March 31, 2022 and December 31, 2021. Accrued interest receivable on FHLB stock totaled approximately $962,000 and $975,000 at March 31, 2022 and December 31, 2021, respectively. There was $520,000 accrued interest receivable on Federal Reserve Bank stock at March 31, 2022 and none at December 31, 2021. 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 and other mutual funds. At both March 31, 2022 and December 31, 2021, the Corporation had equity securities with readily determinable fair values of $5 million.

Loans

Loans	3 Months Ended
	Mar. 31, 2022
Receivables [Abstract]
Loans	Loans The period end loan composition was as follows: ($ in Thousands) Mar 31, 2022 Dec 31, 2021 PPP $ 17,995 $ 66,070 Asset-based lending & equipment finance (a) 231,040 178,027 Commercial and industrial 8,102,380 8,208,289 Commercial real estate — owner occupied 973,572 971,326 Commercial and business lending 9,324,986 9,423,711 Commercial real estate — investor 4,469,241 4,384,569 Real estate construction 1,760,076 1,808,976 Commercial real estate lending 6,229,317 6,193,545 Total commercial 15,554,303 15,617,256 Residential mortgage 7,609,343 7,567,310 Auto finance 497,523 143,045 Home equity 580,867 595,615 Other consumer 289,889 301,723 Total consumer 8,977,622 8,607,693 Total loans $ 24,531,926 $ 24,224,949 (a) Periods prior to Mar 31, 2022 do not include equipment finance . Accrued interest receivable on loans totaled $58 million at March 31, 2022, and $55 million at December 31, 2021, 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 approximately $95,000 and $98,000 for the three months ended March 31, 2022 and March 31, 2021, respectively. The following table presents commercial and consumer loans by credit quality indicator by vintage year at March 31, 2022: Term Loans Amortized Cost Basis by Origination Year (a) ($ in Thousands) Rev Loans Converted to Term (a) Rev Loans Amortized Cost Basis YTD 2022 2021 2020 2019 2018 Prior Total PPP: (b) Risk rating: Pass $ — $ — $ — $ 16,118 $ 1,782 $ — $ — $ — $ 17,900 Potential Problem — — — — 54 — — — 54 Nonaccrual — — — — 41 — — — 41 PPP $ — $ — $ — $ 16,118 $ 1,877 $ — $ — $ — $ 17,995 Asset-based lending & equipment finance: Risk rating: Pass $ — $ 27,624 $ 22,962 $ 116,851 $ 42,930 $ 1,243 $ 223 $ 150 $ 211,982 Potential Problem — 2,057 — — 17,000 — — — 19,057 Asset-based lending & equipment finance $ — $ 29,681 $ 22,962 $ 116,851 $ 59,930 $ 1,243 $ 223 $ 150 $ 231,040 Commercial and industrial: Risk rating: Pass $ — $ 2,113,051 $ 320,013 $ 2,622,986 $ 802,154 $ 905,744 $ 582,722 $ 602,568 $ 7,949,237 Special Mention — 11,619 — 5,900 3,226 — — 38,777 59,521 Potential Problem 37 3,793 17,540 1,369 3,540 45,200 20,584 1,372 93,396 Nonaccrual 71 — 71 — 154 — — — 225 Commercial and industrial $ 108 $ 2,128,462 $ 337,623 $ 2,630,255 $ 809,074 $ 950,944 $ 603,306 $ 642,716 $ 8,102,380 Commercial real estate - owner occupied: Risk rating: Pass $ — $ 19,947 $ 28,850 $ 273,534 $ 183,174 $ 181,284 $ 106,991 $ 154,061 $ 947,840 Special Mention — 247 — — 1,310 — — 169 1,726 Potential Problem — — 635 5,632 2,195 10,571 — 4,972 24,005 Commercial real estate - owner occupied $ — $ 20,194 $ 29,485 $ 279,166 $ 186,678 $ 191,855 $ 106,991 $ 159,202 $ 973,572 Commercial and business lending: Risk rating: Pass $ — $ 2,160,622 $ 371,825 $ 3,029,488 $ 1,030,039 $ 1,088,271 $ 689,936 $ 756,778 $ 9,126,959 Special Mention — 11,865 — 5,900 4,537 — — 38,946 61,248 Potential Problem 37 5,850 18,175 7,001 22,788 55,771 20,584 6,344 136,513 Nonaccrual 71 — 71 — 195 — — — 266 Commercial and business lending $ 108 $ 2,178,337 $ 390,071 $ 3,042,390 $ 1,057,559 $ 1,144,041 $ 710,520 $ 802,068 $ 9,324,986 Commercial real estate - investor: Risk rating: Pass $ — $ 90,319 $ 391,108 $ 1,616,587 $ 704,283 $ 713,819 $ 308,963 $ 318,092 $ 4,143,170 Special Mention — — 2,750 55,652 16,289 32,847 — 6,855 114,393 Potential Problem — — 21,291 21,155 28,694 25,722 28,804 5,125 130,792 Nonaccrual — — 573 65,404 7,906 7,003 — — 80,886 Commercial real estate - investor $ — $ 90,319 $ 415,721 $ 1,758,799 $ 757,172 $ 779,391 $ 337,767 $ 330,071 $ 4,469,241 Real estate construction: Risk rating: Pass $ — $ 27,848 $ 105,439 $ 867,680 $ 517,765 $ 152,883 $ 45,941 $ 12,395 $ 1,729,950 Special Mention — — — 934 11,929 16,454 — — 29,317 Potential Problem — — — 84 116 — — — 200 Nonaccrual — — — — — — — 609 609 Real estate construction $ — $ 27,848 $ 105,439 $ 868,698 $ 529,810 $ 169,337 $ 45,941 $ 13,004 $ 1,760,076 Term Loans Amortized Cost Basis by Origination Year (a) ($ in Thousands) Rev Loans Converted to Term (a) Rev Loans Amortized Cost Basis YTD 2022 2021 2020 2019 2018 Prior Total Commercial real estate lending: Risk rating: Pass $ — $ 118,167 $ 496,547 $ 2,484,267 $ 1,222,047 $ 866,702 $ 354,904 $ 330,487 $ 5,873,120 Special Mention — — 2,750 56,586 28,218 49,302 — 6,855 143,711 Potential Problem — — 21,291 21,239 28,810 25,722 28,804 5,125 130,992 Nonaccrual — — 573 65,404 7,906 7,003 — 609 81,495 Commercial real estate lending $ — $ 118,167 $ 521,160 $ 2,627,496 $ 1,286,982 $ 948,729 $ 383,708 $ 343,075 $ 6,229,317 Total commercial: Risk rating: Pass $ — $ 2,278,789 $ 868,372 $ 5,513,755 $ 2,252,087 $ 1,954,972 $ 1,044,840 $ 1,087,265 $ 15,000,080 Special Mention — 11,865 2,750 62,486 32,755 49,302 — 45,800 204,958 Potential Problem 37 5,850 39,466 28,241 51,598 81,493 49,388 11,469 267,505 Nonaccrual 71 — 644 65,404 8,101 7,003 — 609 81,761 Total commercial $ 108 $ 2,296,504 $ 911,231 $ 5,669,886 $ 2,344,541 $ 2,092,770 $ 1,094,228 $ 1,145,143 $ 15,554,303 Residential mortgage: Risk rating: Pass $ — $ — $ 247,943 $ 1,874,892 $ 1,859,312 $ 916,031 $ 407,380 $ 2,246,835 $ 7,552,394 Special Mention — — — — — — — 90 90 Potential Problem — — 276 468 288 578 280 1,142 3,032 Nonaccrual — — 979 2,160 3,102 3,955 6,946 36,684 53,827 Residential mortgage $ — $ — $ 249,198 $ 1,877,520 $ 1,862,703 $ 920,564 $ 414,606 $ 2,284,751 $ 7,609,343 Auto finance: Risk rating: Pass $ — $ — $ 357,813 $ 135,564 $ 578 $ 2,262 $ 921 $ 295 $ 497,432 Special Mention — — — 42 — — — 1 42 Nonaccrual — — — — — 35 14 — 49 Auto finance $ — $ — $ 357,813 $ 135,606 $ 578 $ 2,296 $ 934 $ 296 $ 497,523 Home equity: Risk rating: Pass $ 2,698 $ 486,976 $ 2,212 $ 2,245 $ 1,480 $ 6,900 $ 8,143 $ 64,691 $ 572,646 Special Mention 91 122 — — — 14 56 384 575 Potential Problem — — — — — — 10 146 156 Nonaccrual 171 55 — 9 119 145 328 6,834 7,490 Home equity $ 2,960 $ 487,152 $ 2,212 $ 2,254 $ 1,599 $ 7,058 $ 8,537 $ 72,054 $ 580,867 Other consumer: Risk rating: Pass $ 76 $ 174,209 $ 1,843 $ 9,113 $ 3,504 $ 2,109 $ 340 $ 98,217 $ 289,335 Special Mention 4 429 — 10 12 — — 8 459 Nonaccrual 1 49 — — 12 6 — 28 95 Other consumer $ 80 $ 174,687 $ 1,843 $ 9,123 $ 3,528 $ 2,115 $ 340 $ 98,253 $ 289,889 Total consumer: Risk rating: Pass $ 2,774 $ 661,185 $ 609,810 $ 2,021,815 $ 1,864,874 $ 927,302 $ 416,784 $ 2,410,038 $ 8,911,807 Special Mention 94 551 — 52 12 14 56 482 1,167 Potential Problem — — 276 468 288 578 290 1,288 3,188 Nonaccrual 171 103 979 2,169 3,234 4,141 7,288 43,546 61,460 Total consumer $ 3,040 $ 661,840 $ 611,065 $ 2,024,504 $ 1,868,408 $ 932,034 $ 424,418 $ 2,455,354 $ 8,977,622 Total loans: Risk rating: Pass (c) $ 2,774 $ 2,939,973 $ 1,478,182 $ 7,535,570 $ 4,116,960 $ 2,882,275 $ 1,461,624 $ 3,497,303 $ 23,911,887 Special Mention 94 12,417 2,750 62,538 32,767 49,315 56 46,283 206,125 Potential Problem 37 5,850 39,742 28,709 51,886 82,071 49,678 12,757 270,693 Nonaccrual 242 103 1,623 67,573 11,335 11,143 7,288 44,154 143,221 Total loans $ 3,148 $ 2,958,343 $ 1,522,296 $ 7,694,390 $ 4,212,949 $ 3,024,804 $ 1,518,646 $ 3,600,497 $ 24,531,926 (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) Accruing TDRs are included in pass unless otherwise rated as special mention. The following table presents commercial and consumer loans by credit quality indicator by vintage year at December 31, 2021: Term Loans Amortized Cost Basis by Origination Year (a) ($ in Thousands) Rev Loans Converted to Term (a) Rev Loans Amortized Cost Basis 2021 2020 2019 2018 2017 Prior Total PPP: (b) Risk rating: Pass $ — $ — $ 44,921 $ 18,610 $ — $ — $ — $ — $ 63,531 Special Mention — — 212 281 — — — — 493 Potential Problem — — 2,000 — — — — — 2,000 Nonaccrual — — — 46 — — — — 46 PPP $ — $ — $ 47,134 $ 18,936 $ — $ — $ — $ — $ 66,070 Commercial and industrial: (c) Risk rating: Pass $ 2,084 $ 2,371,605 $ 2,631,753 $ 852,758 $ 986,300 $ 710,491 $ 177,568 $ 493,876 $ 8,224,351 Special Mention — 7,068 5,900 1,695 — — — 2,811 17,474 Potential Problem 2,706 26,387 23,415 19,960 46,296 20,924 104 1,172 138,258 Nonaccrual 76 — 5,996 161 52 24 — — 6,233 Commercial and industrial $ 4,867 $ 2,405,059 $ 2,667,064 $ 874,575 $ 1,032,647 $ 731,439 $ 177,671 $ 497,860 $ 8,386,316 Commercial real estate - owner occupied: Risk rating: Pass $ 10,092 $ 30,869 $ 261,418 $ 178,424 $ 187,073 $ 110,169 $ 54,538 $ 117,011 $ 939,503 Special Mention — 226 — 4,628 — — — 245 5,100 Potential Problem — 526 5,953 4,721 10,047 727 2,204 2,546 26,723 Commercial real estate - owner occupied $ 10,092 $ 31,621 $ 267,371 $ 187,773 $ 197,120 $ 110,896 $ 56,742 $ 119,802 $ 971,326 Commercial and business lending: Risk rating: Pass $ 12,176 $ 2,402,474 $ 2,938,092 $ 1,049,792 $ 1,173,373 $ 820,660 $ 232,106 $ 610,887 $ 9,227,385 Special Mention — 7,294 6,112 6,604 — — — 3,056 23,066 Potential Problem 2,706 26,913 31,368 24,681 56,343 21,651 2,307 3,718 166,981 Nonaccrual 76 — 5,996 207 52 24 — — 6,279 Commercial and business lending $ 14,958 $ 2,436,680 $ 2,981,569 $ 1,081,284 $ 1,229,767 $ 842,335 $ 234,414 $ 617,662 $ 9,423,711 Commercial real estate - investor: Risk rating: Pass $ 37,430 $ 105,521 $ 1,650,936 $ 685,423 $ 867,606 $ 414,079 $ 139,320 $ 230,452 $ 4,093,337 Special Mention — — 57,163 27,384 33,016 72 — 6,781 124,416 Potential Problem — — 21,309 9,860 22,243 34,591 3,564 14,573 106,138 Nonaccrual — — 45,502 8,158 6,820 — — 197 60,677 Commercial real estate - investor $ 37,430 $ 105,521 $ 1,774,910 $ 730,825 $ 929,685 $ 448,741 $ 142,883 $ 252,003 $ 4,384,569 Real estate construction: Risk rating: Pass $ — $ 31,773 $ 843,664 $ 614,469 $ 204,337 $ 48,647 $ 2,229 $ 12,212 $ 1,757,331 Special Mention — — 2,203 11,929 — 15,885 41 2 30,060 Potential Problem — — 37 120 21,251 — — — 21,408 Nonaccrual — — — — — — — 177 177 Real estate construction $ — $ 31,773 $ 845,903 $ 626,518 $ 225,588 $ 64,532 $ 2,270 $ 12,392 $ 1,808,976 Commercial real estate lending: Risk rating: Pass $ 37,430 $ 137,294 $ 2,494,600 $ 1,299,893 $ 1,071,943 $ 462,726 $ 141,549 $ 242,664 $ 5,850,668 Special Mention — — 59,366 39,313 33,016 15,957 41 6,784 154,476 Potential Problem — — 21,345 9,980 43,494 34,591 3,564 14,573 127,546 Nonaccrual — — 45,502 8,158 6,820 — — 374 60,855 Commercial real estate lending $ 37,430 $ 137,294 $ 2,620,814 $ 1,357,343 $ 1,155,273 $ 513,273 $ 145,153 $ 264,395 $ 6,193,545 Term Loans Amortized Cost Basis by Origination Year (a) ($ in Thousands) Rev Loans Converted to Term (a) Rev Loans Amortized Cost Basis 2021 2020 2019 2018 2017 Prior Total Total commercial: Risk rating: Pass $ 49,606 $ 2,539,768 $ 5,432,693 $ 2,349,685 $ 2,245,316 $ 1,283,386 $ 373,655 $ 853,551 $ 15,078,053 Special Mention — 7,294 65,478 45,917 33,016 15,957 41 9,840 177,543 Potential Problem 2,706 26,913 52,713 34,660 99,837 56,241 5,871 18,291 294,527 Nonaccrual 76 — 51,498 8,365 6,872 24 — 374 67,134 Total commercial $ 52,388 $ 2,573,974 $ 5,602,382 $ 2,438,627 $ 2,385,040 $ 1,355,608 $ 379,567 $ 882,057 $ 15,617,256 Residential mortgage: Risk rating: Pass $ — $ — $ 1,771,447 $ 1,945,029 $ 974,188 $ 428,459 $ 673,447 $ 1,716,419 $ 7,508,989 Special Mention — — — — — 285 — 461 746 Potential Problem — — 475 332 404 265 81 658 2,214 Nonaccrual — — 1,993 2,911 4,479 6,224 6,019 33,734 55,362 Residential mortgage $ — $ — $ 1,773,915 $ 1,948,272 $ 979,071 $ 435,233 $ 679,547 $ 1,751,272 $ 7,567,310 Auto finance: Risk rating: Pass $ — $ — $ 137,952 $ 707 $ 2,675 $ 1,200 $ 352 $ 107 $ 142,993 Nonaccrual — — — — 36 15 — — 52 Auto finance $ — $ — $ 137,952 $ 707 $ 2,711 $ 1,216 $ 352 $ 107 $ 143,045 Home equity: Risk rating: Pass $ 6,728 $ 498,970 $ 1,216 $ 1,401 $ 7,640 $ 8,742 $ 7,660 $ 61,251 $ 586,880 Special Mention 133 100 — 102 4 — — 638 844 Potential Problem 6 — 6 — — 13 — 146 165 Nonaccrual 925 35 9 92 211 305 302 6,772 7,726 Home equity $ 7,792 $ 499,104 $ 1,232 $ 1,595 $ 7,856 $ 9,059 $ 7,962 $ 68,807 $ 595,615 Other consumer: Risk rating: Pass $ 443 $ 180,312 $ 9,297 $ 4,987 $ 2,884 $ 371 $ 265 $ 103,075 $ 301,191 Special Mention 7 351 — 4 — — — 7 363 Nonaccrual 6 120 — 14 7 — 19 11 170 Other consumer $ 456 $ 180,783 $ 9,297 $ 5,005 $ 2,890 $ 371 $ 284 $ 103,093 $ 301,723 Total consumer: Risk rating: Pass $ 7,171 $ 679,353 $ 1,919,912 $ 1,952,124 $ 987,387 $ 438,771 $ 681,725 $ 1,880,781 $ 8,540,053 Special Mention 140 451 — 106 4 285 — 1,106 1,952 Potential Problem 6 — 481 332 404 277 81 804 2,379 Nonaccrual 931 154 2,003 3,017 4,733 6,545 6,340 40,517 63,309 Total consumer $ 8,248 $ 679,959 $ 1,922,396 $ 1,955,579 $ 992,528 $ 445,878 $ 688,145 $ 1,923,208 $ 8,607,693 Total loans: Risk rating: Pass (d) $ 56,777 $ 3,219,121 $ 7,352,605 $ 4,301,809 $ 3,232,703 $ 1,722,157 $ 1,055,380 $ 2,734,332 $ 23,618,106 Special Mention 140 7,745 65,478 46,023 33,021 16,241 41 10,946 179,495 Potential Problem 2,713 26,913 53,194 34,992 100,240 56,519 5,952 19,095 296,905 Nonaccrual 1,006 154 53,501 11,382 11,605 6,569 6,340 40,891 130,443 Total loans $ 60,636 $ 3,253,933 $ 7,524,778 $ 4,394,206 $ 3,377,569 $ 1,801,486 $ 1,067,713 $ 2,805,265 $ 24,224,949 (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 asset-based lending & equipment finance. (d) Accruing TDRs are included in pass unless otherwise rated as special mention. 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 policies for ACLL, nonaccrual loans, and charge offs. 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 warrant specific attention from management. 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 credits, which are 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 March 31, 2022: Accruing ($ in Thousands) Current 30-59 Days 60-89 Days 90+ Days Nonaccrual (a)(b) Total PPP $ 17,953 $ — $ 1 $ — $ 41 $ 17,995 Asset-based lending & equipment finance 231,040 — — — — 231,040 Commercial and industrial 8,100,945 923 162 125 225 8,102,380 Commercial real estate - owner occupied 973,374 198 — — — 973,572 Commercial and business lending 9,323,311 1,121 163 125 266 9,324,986 Commercial real estate - investor 4,388,355 — — — 80,886 4,469,241 Real estate construction 1,759,467 — — — 609 1,760,076 Commercial real estate lending 6,147,823 — — — 81,495 6,229,317 Total commercial 15,471,134 1,121 163 125 81,761 15,554,303 Residential mortgage 7,550,015 4,867 90 544 53,827 7,609,343 Auto finance 496,526 906 42 — 49 497,523 Home equity 569,170 3,632 575 — 7,490 580,867 Other consumer 287,636 707 525 926 95 289,889 Total consumer 8,903,347 10,112 1,232 1,470 61,460 8,977,622 Total loans $ 24,374,481 $ 11,233 $ 1,396 $ 1,595 $ 143,221 $ 24,531,926 (a) Of the total nonaccrual loans, $98 million, or 69%, were current with respect to payment at March 31, 2022. (b) No interest income was recognized on nonaccrual loans for the three months ended March 31, 2022. In addition, there were $24 million of nonaccrual loans for which there was no related ACLL at March 31, 2022. The following table presents loans by past due status at December 31, 2021: Accruing ($ in Thousands) Current 30-59 Days 60-89 Days 90+ Days Nonaccrual (a)(b) Total PPP $ 65,941 $ 40 $ 43 $ — $ 46 $ 66,070 Asset-based lending 178,027 — — — — 178,027 Commercial and industrial (c) 8,201,272 579 54 151 6,233 8,208,289 Commercial real estate - owner occupied 971,163 163 — — — 971,326 Commercial and business lending 9,416,403 781 97 151 6,279 9,423,711 Commercial real estate - investor 4,323,276 142 474 — 60,677 4,384,569 Real estate construction 1,807,178 1,618 2 — 177 1,808,976 Commercial real estate lending 6,130,454 1,759 477 — 60,855 6,193,545 Total commercial 15,546,857 2,541 573 151 67,134 15,617,256 Residential mortgage 7,505,654 5,500 669 126 55,362 7,567,310 Auto finance 142,982 11 — — 52 143,045 Home equity 584,177 2,867 844 — 7,726 595,615 Other consumer 298,261 1,835 472 986 170 301,723 Total consumer 8,531,074 10,213 1,985 1,111 63,309 8,607,693 Total loans $ 24,077,931 $ 12,754 $ 2,558 $ 1,263 $ 130,443 $ 24,224,949 (a) Of the total nonaccrual loans, $84 million, or 65%, were current with respect to payment at December 31, 2021. (b) No interest income was recognized on nonaccrual loans for the year ended December 31, 2021. In addition, there were $9 million of nonaccrual loans for which there was no related ACLL at December 31, 2021. (c) Includes equipment finance. Troubled Debt Restructurings Loans are considered restructured loans if concessions have been granted to borrowers that are experiencing financial difficulty. The following table presents nonaccrual and performing restructured loans by loan portfolio: Mar 31, 2022 Dec 31, 2021 ($ in Thousands) Performing Nonaccrual Restructured Loans (a) Performing Nonaccrual Restructured Loans (a) Commercial and industrial $ 7,426 $ — $ 8,687 $ — Commercial real estate — owner occupied 473 — 967 — Commercial real estate — investor 2,045 3,042 12,866 3,093 Real estate construction 183 44 242 45 Residential mortgage 16,644 15,336 16,316 13,483 Home equity 2,486 931 2,648 806 Other consumer 747 — 803 — Total restructured loans $ 30,003 $ 19,352 $ 42,530 $ 17,426 (a) Nonaccrual restructured loans have been included within nonaccrual loans. The Corporation had a recorded investment of $7 million in loans modified as TDRs during the three months ended March 31, 2022, of which $1 million were in accrual status, included in pass or special mention based on their risk rating within the credit quality tables, and $6 million were in nonaccrual within the credit quality tables, pending a sustained period of repayment. The following table provides the number of loans modified in a TDR by loan portfolio, the recorded investment, and unpaid principal balance for the three months ended March 31, 2022 and 2021: Three months ended Mar 31, 2022 Three months ended Mar 31, 2021 ($ in Thousands) Number Recorded Investment (a) Unpaid Principal Balance (b) Number Recorded Investment (a) Unpaid Principal Balance (b) Commercial real estate — investor — $ — $ — 4 $ 1,693 $ 1,693 Residential mortgage 24 6,421 6,502 20 3,876 3,902 Home equity 3 80 101 1 430 430 Total loans modified 27 $ 6,500 $ 6,603 25 $ 5,999 $ 6,025 (a) Represents post-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 three months ended March 31, 2022, there were no restructured loan modifications of commercial loans, but when such modifications do occur, they primarily include 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 three months ended March 31, 2022. The following table provides the number of loans modified in a TDR during the previous twelve months which subsequently defaulted during the three months ended March 31, 2022 and 2021, and the recorded investment in these restructured loans as of March 31, 2022 and 2021: Three months ended Mar 31, 2022 Three months ended Mar 31, 2021 ($ in Thousands) Number of Recorded Number of Recorded Residential mortgage 1 $ 884 1 $ 97 All loans modified in a TDR are individually 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 March 31, 2022, the Corporation had no loans meeting this classification compared to $7 million at December 31, 2021. Allowance for Credit Losses on Loans The ACLL is comprised of the allowance for loan losses and the allowance for unfunded commitments. The level of the ACLL represents management’s estimate of an amount appropriate to provide for expected lifetime credit losses in the loan portfolio at the balance sheet date. The expected lifetime credit losses are the product of multiplying the Corporation's estimates of probability of default, loss given default, and the individual loan level exposure at default on an undiscounted basis. A main factor in the determination of the ACLL is the economic forecast. The Corporation utilized Moody's baseline forecast, updated during February 2022, in the allowance model. The forecast is applied over a 2 year reasonable and supportable period with straight-line reversion to the historical losses over the second year of the period. The allowance for unfunded commitments is maintained at a level believed by management to be sufficient to absorb expected lifetime losses related to unfunded credit facilities (including unfunded loan commitments and letters of credit). See Note 12 for additional information on the change in the allowance for unfunded commitments. The following table presents a summary of the changes in the ACLL by portfolio segment for the three months ended March 31, 2022: ($ in Thousands) Dec 31, 2021 Charge offs Recoveries Net Charge offs Provision for credit losses Mar 31, 2022 ACLL / Loans Allowance for loan losses PPP $ 51 $ — $ — $ — $ (39) $ 11 Asset-based lending & equipment finance 4,182 — — — 901 5,083 Commercial and industrial 85,624 (1,104) 2,958 1,854 (5,485) 81,993 Commercial real estate — owner occupied 11,473 — 3 3 (349) 11,127 Commercial and business lending 101,330 (1,104) 2,961 1,857 (4,973) 98,214 Commercial real estate — investor 72,803 — — — 558 73,361 Real estate construction 37,643 — 32 32 2,082 39,757 Commercial real estate lending 110,446 — 32 32 2,640 113,118 Total commercial 211,776 (1,104) 2,993 1,889 (2,333) 211,332 Residential mortgage 40,787 (43) 331 288 (3,974) 37,101 Auto finance 1,999 (23) 26 4 4,188 6,190 Home equity 14,011 (125) 440 315 (995) 13,331 Other consumer 11,441 (733) 282 (451) 114 11,104 Total consumer 68,239 (924) 1,079 155 (667) 67,727 Total loans $ 280,015 $ (2,028) $ 4,072 $ 2,044 $ (3,000) $ 279,058 Allowance for unfunded commitments Asset-based lending & equipment finance $ 857 $ — $ — $ — $ (62) $ 796 Commercial and industrial 17,601 — — — (2,694) 14,907 Commercial real estate — owner occupied 208 — — — (64) 144 Commercial and business lending 18,667 — — — (2,820) 15,847 Commercial real estate — investor 936 — — — (302) 634 Real estate construction 15,586 — — — 2,415 18,001 Commercial real estate lending 16,522 — — — 2,114 18,636 Total commercial 35,189 — — — (707) 34,482 Home equity 2,592 — — — (68) 2,523 Other consumer 1,995 — — — (225) 1,770 Total consumer 4,587 — — — (293) 4,293 Total loans $ 39,776 $ — $ — $ — $ (1,000) $ 38,776 Allowance for credit losses on loans PPP $ 51 $ — $ — $ — $ (39) $ 11 0.06 % Asset-based lending & equipment finance 5,040 — — — 839 5,879 2.54 % Commercial and industrial 103,225 (1,104) 2,958 1,854 (8,179) 96,900 1.20 % Commercial real estate — owner occupied 11,681 — 3 3 (413) 11,270 1.16 % Commercial and business lending 119,997 (1,104) 2,961 1,857 (7,793) 114,061 1.22 % Commercial real estate — investor 73,739 — — — 256 73,995 1.66 % Real estate construction 53,229 — 32 32 4,497 57,758 3.28 % Commercial real estate lending 126,968 — 32 32 4,754 131,754 2.12 % Total commercial 246,965 (1,104) 2,993 1,889 (3,039) 245,814 1.58 % Residential mortgage 40,787 (43) 331 288 (3,974) 37,101 0.49 % Auto finance 1,999 (23) 26 4 4,188 6,190 1.24 % Home equity 16,603 (125) 440 315 (1,063) 15,855 2.73 % Other consumer 13,436 (733) 282 (451) (111) 12,874 4.44 % Total consumer 72,825 (924) 1,079 155 (961) 72,020 0.80 % Total loans $ 319,791 $ (2,028) $ 4,072 $ 2,044 $ (4,000) $ 317,835 1.30 % The following table presents a summary of the changes in the ACLL by portfolio segment for the year ended December 31, 2021: ($ in Thousands) Dec 31, 2020 Charge offs Recoveries Net Charge offs Provision for credit losses Dec 31, 2021 ACLL / Loans Allowance for loan losses PPP $ 531 $ — $ — $ — $ (480) $ 51 Asset-based lending 2,077 — 412 412 1,693 4,182 Commercial and industrial (a) 140,716 (21,564) 8,152 (13,412) (41,680) 85,624 Commercial real estate — owner occupied 11,274 — 120 120 80 11,473 Commercial and business lending 154,598 (21,564) 8,684 (12,880) (40,388) 101,330 Commercial real estate — investor 93,435 (14,346) 3,162 (11,184) (9,448) 72,803 Real estate construction 59,193 (5) 126 121 (21,672) 37,643 Commercial real estate lending 152,629 (14,351) 3,288 (11,063) (31,120) 110,446 Total commercial 307,226 (35,915) 11,972 (23,943) (71,508) 211,776 Residential mortgage 42,996 (880) 841 (38) (2,170) 40,787 Auto finance 174 (22) 31 9 1,816 1,999 Home equity 18,849 (668) 2,854 2,186 (7,024) 14,011 Other consumer 14,456 (3,168) 1,267 (1,901) (1,113) 11,441 Total consumer 76,475 (4,738) 4,993 256 (8,492) 68,239 Total loans $ 383,702 $ (40,652) $ 16,965 $ (23,687) $ (80,000) $ 280,015 Allowance for unfunded commitments Asset-based lending $ 901 $ — $ — $ — $ (43) $ 857 Commercial and industrial (a) 21,411 — — — (3,809) 17,601 Commercial real estate — owner occupied 266 — — — (58) 208 Commercial and business lending 22,577 — — — (3,911) 18,667 Commercial real estate — investor 636 — — — 300 936 Real estate construction 18,887 — — — (3,301) 15,586 Commercial real estate lending 19,523 — — — (3,001) 16,522 Total commercial 42,101 — — — (6,912) 35,189 Home equity 3,118 — — — (526) 2,592 Other consumer 2,557 — — — (563) 1,995 Total consumer 5,675 — — — (1,088) 4,587 Total loans $ 47,776 $ — $ — $ — $ (8,000) $ 39,776 Allowance for credit losses on loans PPP $ 531 $ — $ — $ — $ (480) $ 51 0.08 % Asset-based lending 2,978 — 412 412 1,649 5,040 2.83 % Commercial and industrial (a) 162,126 (21,564) 8,152 (13,412) (45,490) 103,225 1.26 % Commercial real estate — owner occupied 11,539 — 120 120 22 11,681 1.20 % Commercial and business lending 177,175 (21,564) 8,684 (12,880) (44,299) 119,997 1.27 % Commercial real estate — investor 94,071 (14,346) 3,162 (11,184) (9,148) 73,739 1.68 % Real estate construction 78,080 (5) 126 121 (24,972) 53,229 2.94 % Commercial real estate lending 172,152 (14,351) 3,288 (11,063) (34,121) 126,968 2.05 % Total commercial 349,327 (35,915) 11,972 (23,943) (78,419) 246,965 1.58 % Residential mortgage 42,996 (880) 841 (38) (2,170) 40,787 0.54 % Auto finance 174 (22) 31 9 1,816 1,999 1.40 % Home equity 21,967 (668) 2,854 2,186 (7,550) 16,603 2.79 % Other consumer 17,013 (3,168) 1,267 (1,901) (1,676) 13,436 4.45 % Total consumer 82,150 (4,738) 4,993 256 (9,581) 72,825 0.85 % Total loans $ 431,478 $ (40,652) $ 16,965 $ (23,687) $ (88,000) $ 319,791 1.32 %

Goodwill and Other Intangible A

Goodwill and Other Intangible Assets	3 Months Ended
	Mar. 31, 2022
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 2021, utilizing a qualitative assessment. Factors that management considered in this assessment included macroeconomic conditions, industry and market considerations, overall financial performance of the Corporation and each reporting unit (both current and projected), changes in management strategy, and changes in the composition or carrying amount of net assets. In addition, management considered the changes in both the Corporation's common stock price and in the overall bank common stock index (based on the S&P 400 Regional Bank Sub-Industry Index), as well as the Corporation's earnings per common share trend over the past year. Based on these assessments, management concluded that it is more likely than not that the estimated fair value exceeded the carrying value (including goodwill) for each reporting unit. Therefore a step one quantitative analysis was not required. There have been no events since the May 2021 impairment test that have changed the Corporation's impairment assessment conclusion. There were no impairment charges recorded in 2021 or the first three months of 2022. The Corporation had goodwill of $1.1 billion at both March 31, 2022 and December 31, 2021. Other Intangible Assets The Corporation has other intangible assets and CDIs that are amortized. For CDIs and other intangibles, changes in the gross carrying amount, accumulated amortization, and net book value were as follows: ($ in Thousands) Three months ended Mar 31, 2022 Year Ended Dec 31, 2021 Core deposit intangibles Gross carrying amount at the beginning of period $ 88,109 $ 88,109 Accumulated amortization (32,219) (30,016) Net book value $ 55,890 $ 58,093 Amortization during the period $ 2,203 $ 8,811 Other intangibles Gross carrying amount at the beginning of period $ — $ 2,000 Reductions due to sale — (1,317) Accumulated amortization — (683) Net book value $ — $ — Amortization during the period $ — $ 33 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 accounted for under the fair value measurement method, with any change in fair value being recognized through earnings in mortgage banking, net on the consolidated statements of income. On January 1, 2022, the Corporation made the irrevocable election to account for its MSRs asset under the fair value measurement methodology. Under this methodology, changes in the fair value are recognized in earnings as they occur, through mortgage banking, net on the consolidated statements of income. MSRs are not traded in active markets. As a result, a cash flow model is used to determine fair value. Key assumptions and estimates, projected prepayment speeds, assumed servicing costs, ancillary income, costs to service delinquent loans, costs of foreclosure, and discount rates with option-adjusted spreads, are used in measuring the fair value of the MSRs asset. These assumptions are considered significant unobservable inputs. 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 under the fair value measurement method for the quarter ended March 31, 2022 is as follows: ($ in Thousands) Three months ended Mar 31, 2022 Mortgage servicing rights Mortgage servicing rights at beginning of period $ 54,862 Cumulative effect of accounting methodology change 2,296 Balance at beginning of period, adjusted $ 57,158 Additions 3,042 Paydowns (2,637) Valuation: Change in fair value model assumptions 2,345 Changes in fair value of asset 7,106 Mortgage servicing rights at end of period $ 67,015 Portfolio of residential mortgage loans serviced for others (“servicing portfolio”) $ 6,972,242 Mortgage servicing rights to servicing portfolio 0.96 % Prior to January 1, 2022, the Corporation accounted for its MSRs under the amortization methodology. Under this methodology the Corporation evaluated its MSRs asset for impairment at minimum on a quarterly basis. Impairment was 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 fell, prepayment speeds were usually faster and the value of the MSRs asset generally decreased, requiring additional valuation reserve. Conversely, as mortgage interest rates rose, prepayment speeds were usually slower and the value of the MSRs asset generally increased, requiring less valuation reserve. A valuation allowance was established, through a charge to earnings, to the extent the amortized cost of the MSRs exceeded the estimated fair value by stratification. An other-than-temporary impairment (i.e., recoverability was considered remote when considering interest rates and loan pay off activity) was recognized as a write-down of the MSRs asset and the related valuation allowance (to the extent a valuation allowance was available) and then against earnings. A direct write-down permanently reduced the carrying value of the MSRs asset and valuation allowance, precluding subsequent recoveries. A summary of changes in the balance of the MSRs asset and the MSRs valuation allowance under the amortization method for the year ended December 31, 2021 is as follows: ($ in Thousands) Year Ended Dec 31, 2021 Mortgage servicing rights Mortgage servicing rights at beginning of period $ 59,967 Additions 16,151 Amortization (19,436) Mortgage servicing rights at end of period $ 56,682 Valuation allowance at beginning of period $ (18,006) (Additions) recoveries, net 16,186 Valuation allowance at end of period $ (1,820) Mortgage servicing rights, net $ 54,862 Fair value of mortgage servicing rights $ 57,259 Portfolio of residential mortgage loans serviced for others (“servicing portfolio”) $ 6,994,834 Mortgage servicing rights, net to servicing portfolio 0.78 % Mortgage servicing rights expense (a) $ 3,250 (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 for CDIs and decay for MSRs are based on existing asset balances, the current interest rate environment, and prepayment speeds as of March 31, 2022. The actual 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 Mortgage Servicing Rights Nine months ended December 31, 2022 $ 6,608 $ 8,956 2023 8,811 11,320 2024 8,811 9,663 2025 8,811 8,227 2026 8,811 6,874 2027 8,811 5,913 Beyond 2027 5,227 16,062 Total Estimated Amortization Expense $ 55,890 $ 67,015

Short and Long-Term Funding

Short and Long-Term Funding	3 Months Ended
	Mar. 31, 2022
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) and long-term funding (funding with original contractual maturities greater than one year): ($ in Thousands) Mar 31, 2022 Dec 31, 2021 Short-Term Funding Federal funds purchased $ 100,060 $ 120 Securities sold under agreements to repurchase 268,708 319,412 Federal funds purchased and securities sold under agreements to repurchase 368,768 319,532 Commercial paper 30,593 34,730 Total short-term funding $ 399,361 $ 354,262 Long-Term Funding Corporation subordinated notes, at par, due 2025 $ 250,000 $ 250,000 Capitalized costs (765) (839) Finance leases 562 163 Total long-term funding 249,797 249,324 Total short and long-term funding, excluding FHLB advances $ 649,158 $ 603,587 FHLB Advances Short-term FHLB advances $ 320,000 $ — Long-term FHLB advances 1,217,948 1,621,047 Total FHLB advances $ 1,537,948 $ 1,621,047 Total short and long-term funding $ 2,187,106 $ 2,224,633 Securities Sold Under Agreements to Repurchase 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). The Corporation utilizes securities sold under agreements to repurchase to facilitate the needs of its customers. The fair value of securities pledged to secure repurchase agreements may decline. At March 31, 2022, the Corporation has pledged securities valued at 129% of the gross outstanding balance of repurchase agreements to manage this risk. The remaining contractual maturity of the securities sold under agreements to repurchase on the consolidated balance sheets as of March 31, 2022 and December 31, 2021 are presented in the following table: Overnight and Continuous ($ in Thousands) March 31, 2022 December 31, 2021 Repurchase agreements Agency mortgage-related securities $ 268,708 $ 319,412 Long-Term Funding 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. Finance Leases Finance leases are used in conjunction with branch operations. See Note 18 for additional disclosure regarding the Corporation’s leases. FHLB Advances

Derivative and Hedging Activiti

Derivative and Hedging Activities	3 Months Ended
	Mar. 31, 2022
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 $76 million and $71 million of investment securities as collateral at March 31, 2022, and December 31, 2021, respectively. At March 31, 2022, the Corporation posted $6 million of required cash collateral compared to $11 million at December 31, 2021. Federal regulations require the Corporation to clear all LIBOR and compound SOFR 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. Derivatives to Accommodate Customer Needs The Corporation 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 until early 2022, commodity prices. As of the end of the first quarter of 2022, the Corporation no longer had any outstanding commodity contracts. 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 until the end of the first quarter of 2022, 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: As of the end of the first quarter of 2022, the Corporation no longer had any outstanding commodity contracts. Historically, commodity contracts were entered into primarily for the benefit of commercial customers seeking to manage their exposure to fluctuating commodity prices. The Corporation mitigated 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 on residential mortgage loans and TBA securities 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 on the consolidated statements of income. Interest rate-related instruments for MSRs hedge: The fair value of the Corporation's MSRs asset changes in response to change in primary mortgage loan rates and other assumptions. To mitigate the earnings volatility caused by changes in the fair value of MSRs, the Corporation designates certain financial instruments as an economic hedge. Changes in the fair value of these instruments are generally expected to partially offset changes in the fair value of MSRs and are 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 on the consolidated statements of income. 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 March 31, 2022 and December 31, 2021. 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 March 31, 2022 and December 31, 2021. 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. Mar 31, 2022 Dec 31, 2021 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 $ 4,090,770 $ 31,728 $ 4,130,770 $ 112,029 $ 3,874,781 $ 83,626 $ 3,874,781 $ 26,231 Foreign currency exchange forwards 506,185 1,986 501,213 1,815 490,057 5,490 478,745 5,441 Commodity contracts — — — — 3,894 1,264 3,910 1,248 Mortgage banking (a)(b) 114,909 4,796 197,000 234 133,990 2,647 245,016 — Gross derivatives before netting $ 38,511 $ 114,078 $ 93,026 $ 32,921 Less: Legally enforceable master netting agreements 2,514 2,514 2,143 2,143 Less: Cash collateral pledged/received 7,816 987 1,313 11,357 Total derivative instruments, after netting $ 28,181 $ 110,577 $ 89,570 $ 19,421 (a) The notional amount of the mortgage derivative asset includes interest rate lock commitments, while the notional amount of the mortgage derivative liability includes forward commitments. The Corporation terminated its $500 million fair value hedge during the fourth quarter of 2019. At March 31, 2022, the amortized cost basis of the closed portfolios which had previously been used in the terminated hedging relationship was $390 million and is included in loans on the consolidated balance sheets. This amount includes $2 million of hedging adjustments on the discontinued hedging relationships. The table below identifies the effect of fair value hedge accounting on the Corporation's consolidated statements of income for the three months ended March 31, 2022 and 2021: Location and Amount of Gain or (Loss) Recognized on the Consolidated Statements of Income in Three months ended Mar 31, 2022 2021 ($ in Thousands) Interest Income Total amounts of income presented on the consolidated statements of income in which the effects of the fair value hedge is recorded $ (179) $ (485) The effects of fair value hedging: (Loss) on fair value hedging relationships in Subtopic 815-20 Interest contracts Hedged items (179) (485) The table below identifies the effect of derivatives not designated as hedging instruments on the Corporation's consolidated statements of income for the three months ended March 31, 2022 and 2021: Consolidated Statements of Income Category of Three Months Ended Mar 31, ($ in Thousands) 2022 2021 Derivative Instruments Interest rate-related instruments — customer and mirror, net Capital markets, net $ 573 $ 2,938 Interest rate-related instruments — MSRs hedge Mortgage banking, net $ (3,666) $ — Foreign currency exchange forwards Capital markets, net 123 143 Commodity contracts Capital markets, net (16) (621) Interest rate lock commitments (mortgage) Mortgage banking, net (2,842) (2,708) Forward commitments (mortgage) Mortgage banking, net (4,757) (6,300)

Balance Sheet Offsetting

Balance Sheet Offsetting	3 Months Ended
	Mar. 31, 2022
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 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. Historically, the Corporation entered into commodity contracts to manage commercial customers' exposure to fluctuating commodity prices. As of the end of the first quarter of 2022, the Corporation no longer had any outstanding commodity contracts. 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 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 with assets and liabilities offset resulting in a net position which is further offset by any cash collateral, and is reported 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. The following table presents the interest rate and foreign exchange assets and liabilities subject to an enforceable master netting arrangement as of March 31, 2022 and interest rate, commodity, and foreign exchange assets and liabilities subject to an enforceable master netting arrangement as of December 31, 2021. The interest and foreign exchange agreements the Corporation has with its commercial customers and the commodity agreements the Corporation had 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 ($ in Thousands) Derivative Cash Collateral Received Derivative assets March 31, 2022 $ 15,021 $ (2,514) $ (7,816) $ 4,691 December 31, 2021 3,567 (2,143) (1,313) 111 Gross Amounts Recognized Gross Amounts Subject to Master Netting Arrangements Offset on the Consolidated Balance Sheets Net Amounts Presented on the Consolidated Balance Sheets ($ in Thousands) Derivative Cash Collateral Pledged Derivative liabilities March 31, 2022 $ 3,535 $ (2,514) $ (987) $ 34 December 31, 2021 15,620 (2,143) (11,357) 2,120

Commitments, Off-Balance Sheet

Commitments, Off-Balance Sheet Arrangements, Legal Proceedings and Regulatory Matters	3 Months Ended
	Mar. 31, 2022
Commitments and Contingencies Disclosure [Abstract]
Commitments, Off-Balance Sheet Arrangements, Legal Proceedings and Regulatory Matters	Commitments, Off-Balance Sheet Arrangements, Legal Proceedings, Regulatory Matters and Operational 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) Mar 31, 2022 Dec 31, 2021 Commitments to extend credit, excluding commitments to originate residential mortgage loans held for sale (a)(b) $ 10,973,357 $ 10,848,136 Commercial letters of credit (a) 9,827 5,992 Standby letters of credit (c) 257,039 248,292 (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 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) Three months ended Mar 31, 2022 Year Ended Dec 31, 2021 Allowance for Unfunded Commitments Balance at beginning of period $ 39,776 $ 47,776 Provision for unfunded commitments (1,000) (8,000) Balance at end of period $ 38,776 $ 39,776 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 on residential mortgage loans and TBA securities 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. 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, 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 March 31, 2022 was $259 million, compared to $268 million at December 31, 2021, 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 $8 million for the three months ended March 31, 2022 and 2021, respectively. The Corporation's remaining investment in qualified affordable housing projects accounted for under the proportional amortization method totaled $253 million at March 31, 2022 and $262 million at December 31, 2021. The Corporation’s unfunded equity contributions relating to investments in federal and state qualified affordable housing and federal and state historic projects are recorded in accrued expenses and other liabilities on the consolidated balance sheets. The Corporation’s remaining unfunded equity contributions totaled $69 million at March 31, 2022 and $80 million at December 31, 2021. For the three months ended March 31, 2022 and the year ended December 31, 2021, 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 companies through either direct investment 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 $25 million at both March 31, 2022 and December 31, 2021, 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. A lawsuit, Evans et al v. Associated Banc-Corp et al , was filed in the United States District Court for the Eastern District of Wisconsin - Green Bay Division on January 13, 2021 by one current and one former participant in the Associated Banc-Corp 401(k) and Employee Stock Ownership Plan (the “Plan”) as representatives of a putative class. The plaintiffs alleged that Associated Banc-Corp, the Associated Banc-Corp Plan Administrative Committee, and current and past members of such committee during the relevant time period (the “Defendants”) breached their fiduciary duties with respect to the Plan in violation of Employee Retirement Income Security Act of 1974, as amended, by applying an imprudent and inappropriate preference for products associated with Associated Banc-Corp within the Plan, and that the Defendants failed to monitor or control the recordkeeping expenses paid to Associated Trust Company, N.A. On March 18, 2021, the Defendants filed a motion to dismiss. On April 8, 2021, the plaintiffs filed an amended complaint which dropped the record keeping claim, added Associated Trust Company N.A. and Kellogg Asset Management, LLC as defendants, and alleged various breaches of fiduciary duty related to the selection and monitoring of, and the fees charged by, proprietary collective investment trusts. The plaintiffs, in part, seek an accounting and disgorgement of certain profits, as well as certain equitable restitution and equitable monetary relief. The Corporation intends to vigorously defend against this lawsuit. It is not possible for management to assess the probability of a material adverse outcome or reasonably estimate the amount of any potential loss at this time with respect to this lawsuit. 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. Operational Matters In November 2021, we became aware that during several routine purges of old documents, certain documents that were more than seven years old relating to active accounts were inadvertently purged from our electronic database. The active account documents that were inadvertently purged related to (1) certain customer documents obtained as part of bank acquisitions, and (2) certain customer documents that were transferred to a new cold storage system without correct retention coding. Both the acquisitions and the transfer occurred years ago. The majority of the documents inadvertently purged were signature cards. We have undertaken measures to replace (if possible) or otherwise lessen the impact on customers of any inadvertently purged documents. While the impact on the Company of this incident has been immaterial to date, and we are not aware of any material adverse customer impact, it is not possible at this time for management to reasonably estimate the amount of any potential loss related to this incident. 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. Additionally, beginning in the third quarter of 2021, qualifying residential mortgage loans guaranteed by U.S. government agencies have been sold into GNMA pools. As a result of make whole requests, the Corporation has repurchased loans with aggregate principal balances of $2 million and $8 million for the three months ended March 31, 2022 and the year ended December 31, 2021, respectively. There were no loss reimbursement and settlement claims paid in the three months ended March 31, 2022, and approximately $114,000 of such claims were paid for the year ended December 31, 2021. Make whole requests during 2021 and the first three months of 2022 generally arose from loans sold during the period of January 1, 2017 to December 31, 2021. Since January 1, 2017, loans sold totaled $7.2 billion at the time of sale, and consisted primarily of loans sold to GSEs. As of March 31, 2022, $4.6 billion of loans originated since January 1, 2017 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 at both March 31, 2022 and December 31, 2021. 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 March 31, 2022 and December 31, 2021, there were $8 million and $10 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 March 31, 2022 and December 31, 2021, there were $23 million and $24 million, respectively, of such residential mortgage loans with credit risk recourse, upon which there have been immaterial historical losses to the Corporation.

Fair Value Measurements

Fair Value Measurements	3 Months Ended
	Mar. 31, 2022
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 2021 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 recurring basis: Mortgage Servicing Rights: The Corporation sells residential mortgage loans in the secondary market and typically retains the rights to service the loans sold. Upon sale, a MSRs asset is capitalized, which represents the then current fair value of future net cash flows expected to be realized for performing servicing activities. On January 1, 2022, the Corporation made the irrevocable election to account for its MSRs asset under the fair value measurement method. Under this methodology, changes in the fair value are recognized in earnings as they occur through mortgage banking, net on the consolidated statements of income. MSRs are not traded in active markets. A cash flow model is used to determine fair value. Key assumptions and estimates, including projected prepayment speeds, assumed servicing costs, ancillary income, costs to service delinquent loans, costs of foreclosure, and discount rates with option-adjusted spreads, used by this model are based on current market sources. Assumptions used to value MSRs are considered significant unobservable inputs. A separate third-party model is used to estimate prepayment speeds based on interest rates, housing turnover rates, estimated loan curtailment, anticipated defaults and other relevant factors. Fair value estimates from outside sources are received periodically to corroborate the results of the valuation model. Due to the nature of the valuation inputs, MSRs are classified within Level 3 of the fair value hierarchy . See Note 8 for additional disclosures about the Corporation's MSRs. The table below presents the Corporation’s financial instruments measured at fair value on a recurring basis as of March 31, 2022 and December 31, 2021, aggregated by the level in the fair value hierarchy within which those measurements fall: ($ in Thousands) Fair Value Hierarchy Mar 31, 2022 Dec 31, 2021 Assets Investment securities AFS U.S. Treasury securities Level 1 $ 116,132 $ 122,957 Agency securities Level 2 14,200 14,897 Obligations of state and political subdivisions (municipal securities) Level 2 372,401 400,457 Residential mortgage-related securities FNMA / FHLMC Level 2 1,894,819 2,691,879 GNMA Level 2 58,909 67,780 Private-label Level 2 — 329,724 Commercial mortgage-related securities FNMA / FHLMC Level 2 19,786 350,623 GNMA Level 2 126,760 166,799 Asset backed securities FFELP Level 2 168,978 177,325 SBA Level 2 5,845 6,580 Other debt securities Level 2 2,973 2,994 Total investment securities AFS Level 1 $ 116,132 $ 122,957 Total investment securities AFS Level 2 2,664,671 4,209,058 Equity securities with readily determinable fair values Level 1 5,025 4,810 Residential loans held for sale Level 2 91,582 136,638 Mortgage servicing rights, net (a) Level 3 67,015 N/A Interest rate-related instruments (b) Level 2 31,728 83,626 Foreign currency exchange forwards (b) Level 2 1,986 5,490 Commodity contracts (b) Level 2 — 1,264 Interest rate lock commitments to originate residential mortgage loans held for sale Level 3 — 2,617 Forward commitments on residential mortgage loans Level 3 4,796 30 Liabilities Interest rate-related instruments (b) Level 2 $ 112,029 $ 26,231 Foreign currency exchange forwards (b) Level 2 1,815 5,441 Commodity contracts (b) Level 2 — 1,248 Interest rate lock commitments to originate residential mortgage loans held for sale Level 3 224 — Forward commitments on TBA securities Level 3 9 — (a) MSRs at December 31, 2021 were carried at LOCOM. On January 1, 2022, the Corporation made the irrevocable election to account for MSRs at fair value on a recurring basis. The table below presents a rollforward of the consolidated balance sheets amounts for the three months ended March 31, 2022 and the year ended December 31, 2021, 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 on residential mortgage loans and TBA securities Total Balance December 31, 2020 $ 9,624 $ 2,046 $ 7,579 New production 53,686 (3,281) 56,966 Closed loans / settlements (53,477) 3,740 (57,217) Other (7,216) (2,535) (4,680) Mortgage derivative (loss) (7,007) (2,076) (4,932) Balance December 31, 2021 $ 2,617 $ (30) $ 2,647 New production $ 5,002 $ (887) $ 5,890 Closed loans / settlements (455) 9,099 (9,554) Other (7,389) (12,969) 5,580 Mortgage derivative gain (loss) (2,842) (4,757) 1,916 Balance March 31, 2022 $ (224) $ (4,787) $ 4,563 The closing ratio on interest rate lock commitments to originate residential mortgage loans held for sale is a Level 3 measurement, and was 79% at March 31, 2022. The following table presents the carrying value of equity securities without readily determinable fair values as of March 31, 2022 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 March 31, 2022: ($ in Thousands) Equity securities without readily determinable fair values Carrying value as of December 31, 2021 $ 13,542 Additions 1 Sales (8) Carrying value as of March 31, 2022 $ 13,535 Cumulative upward carrying value changes between January 1, 2018 and March 31, 2022 $ 13,444 Cumulative downward carrying value changes/impairment between January 1, 2018 and March 31, 2022 $ — 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 ($ in Thousands) Fair Value Hierarchy Fair Value Adjustment Recognized on the Consolidated Statements of Income (c) March 31, 2022 Assets Individually evaluated loans (a) Level 3 $ 43,882 Provision for credit losses $ (397) OREO (b) Level 2 985 Other noninterest expense / provision for credit losses (d) 102 December 31, 2021 Assets Individually evaluated loans (a) Level 3 $ 69,917 Provision for credit losses $ (3,045) OREO (b) Level 2 21,299 Other noninterest expense / provision for credit losses (d) 7,345 Mortgage servicing rights (e) Level 3 57,259 Mortgage banking, net 16,186 (a) Includes probable TDRs which are individually analyzed, net of the related ACLL. Certain nonfinancial assets and nonfinancial liabilities measured at fair value on a nonrecurring basis include the fair value analysis in the goodwill impairment test as well as intangible assets and other nonfinancial long-lived assets measured at fair value for the purpose of impairment assessment. The Corporation's significant Level 3 measurements which employ unobservable inputs that are readily quantifiable pertain to individually evaluated loans. The table below presents information about these inputs and further discussion is found above: March 31, 2022 Valuation Technique Significant Unobservable Input Range of Inputs Weighted Average Input Applied Individually evaluated loans Appraisals / Discounted cash flow Collateral / Discount factor 21% - 21% 21% 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: Mar 31, 2022 Dec 31, 2021 ($ in Thousands) Fair Value Hierarchy Level Carrying Amount Fair Value Carrying Amount Fair Value Financial assets Cash and due from banks Level 1 $ 334,138 $ 334,138 $ 343,831 $ 343,831 Interest-bearing deposits in other financial institutions Level 1 166,929 166,929 681,684 681,684 Investment securities AFS Level 1 116,132 116,132 122,957 122,957 Investment securities AFS Level 2 2,664,671 2,664,671 4,209,058 4,209,058 Investment securities HTM, net Level 1 998 964 1,000 1,001 Investment securities HTM, net Level 2 3,938,857 3,763,872 2,237,947 2,347,608 Equity securities with readily determinable fair values Level 1 5,025 5,025 4,810 4,810 Equity securities without readily determinable fair values Level 3 13,535 13,535 13,542 13,542 FHLB and Federal Reserve Bank stocks Level 2 168,281 168,281 168,281 168,281 Residential loans held for sale Level 2 91,582 91,582 136,638 136,638 Loans, net Level 3 24,252,867 23,485,798 23,944,934 23,980,330 Bank and corporate owned life insurance Level 2 679,538 679,538 680,021 680,021 Mortgage servicing rights, net (a) Level 3 67,015 67,015 54,862 57,259 Derivatives (other assets) (b) Level 2 33,715 33,715 90,379 90,379 Interest rate lock commitments to originate residential mortgage loans held for sale (other assets) Level 3 — — 2,617 2,617 Forward commitments to sell residential mortgage loans (other assets) Level 3 4,796 4,796 30 30 Financial liabilities Noninterest-bearing demand, savings, interest-bearing demand, and money market accounts Level 3 $ 27,116,495 $ 27,116,495 $ 27,119,167 $ 27,119,167 Time deposits (c) Level 2 1,288,913 1,288,913 1,347,262 1,347,262 Short-term funding Level 2 399,361 399,270 354,262 354,248 FHLB advances Level 2 1,537,948 1,546,821 1,621,047 1,680,814 Other long-term funding Level 2 249,797 254,355 249,324 265,545 Standby letters of credit (d) Level 2 2,473 2,473 2,367 2,367 Derivatives (accrued expenses and other liabilities) (b) Level 2 113,844 113,844 32,921 32,921 Interest rate lock commitments to originate residential mortgage loans held for sale (accrued expenses and other liabilities) Level 3 224 224 — — Forward commitments on TBA securities (accrued expenses and other liabilities) Level 3 9 9 — — (a) MSRs at December 31, 2021 were carried at LOCOM. On January 1, 2022, the Corporation made the irrevocable election to account for MSRs at fair value.

Retirement Plans

Retirement Plans	3 Months Ended
	Mar. 31, 2022
Retirement Benefits [Abstract]
Retirement Plans	Retirement Plans The Corporation has a noncontributory defined benefit 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 components of net periodic pension cost and net periodic benefit cost for the RAP and Postretirement Plan for the three months ended March 31, 2022 and 2021 were as follows: Three Months Ended Mar 31, ($ in Thousands) 2022 2021 Components of Net Periodic Benefit Cost RAP Service cost $ 923 $ 2,075 Interest cost 1,772 1,623 Expected return on plan assets (6,736) (6,430) Amortization of prior service cost (63) (18) Amortization of actuarial loss 74 1,050 Total net periodic pension cost $ (4,029) $ (1,701) Postretirement Plan Interest cost $ 13 $ 13 Amortization of prior service cost (19) (19) Total net periodic benefit cost $ (6) $ (6) 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 three months ended March 31, 2022 and 2021.

Segment Reporting

Segment Reporting	3 Months Ended
	Mar. 31, 2022
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 2021 Annual Report on Form 10-K 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, primarily loans) and credits providers of funds (liabilities, primarily deposits) based on the maturity, prepayment and / or re-pricing 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 interest income (expense) in the accompanying tables. The provision for credit losses 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 ACLL model using the methodologies described in the Corporation’s 2021 Annual Report on Form 10-K. 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 note in the Corporation’s 2021 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, fiduciary, and retirement planning products and services to individuals and small to mid-sized businesses. During the first quarter of 2021, the Corporation sold its wealth management subsidiary Whitnell. The Community, Consumer, and Business segment serves individuals, as well as small and mid-sized businesses, by providing lending and deposit solutions. 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). Effective during the first quarter of 2022, certain support functions and a select group of banking regions were realigned into the Community, Consumer, and Business segment from the Corporate and Commercial Specialty segment. Information about the Corporation’s segments is presented below: Corporate and Commercial Specialty Three Months Ended Mar 31, ($ in Thousands) 2022 2021 Net interest income $ 90,633 $ 89,661 Net intersegment interest income 8,525 4,670 Segment net interest income 99,158 94,331 Noninterest income (a) 37,790 41,828 Total revenue 136,948 136,160 Provision for credit losses 12,653 16,680 Noninterest expense 56,559 55,448 Income before income taxes 67,736 64,032 Income tax expense 12,313 11,891 Net income $ 55,423 $ 52,141 Allocated goodwill $ 525,836 $ 525,836 Community, Consumer, and Business Three Months Ended Mar 31, ($ in Thousands) 2022 2021 Net interest income $ 69,544 $ 71,775 Net intersegment interest income 18,833 14,889 Segment net interest income 88,377 86,664 Noninterest income 33,207 47,331 Total revenue 121,584 133,995 Provision for credit losses 4,656 5,928 Noninterest expense 98,660 100,353 Income before income taxes 18,267 27,714 Income tax expense 3,836 5,820 Net income $ 14,431 $ 21,894 Allocated goodwill $ 579,156 $ 579,156 Risk Management and Shared Services Three Months Ended Mar 31, ($ in Thousands) 2022 2021 Net interest income $ 27,570 $ 14,465 Net intersegment interest (expense) (27,358) (19,559) Segment net interest income 212 (5,094) Noninterest income 3,470 6,184 Total revenue 3,683 1,091 Provision for credit losses (21,300) (45,612) Noninterest expense 18,073 19,546 Income before income taxes 6,909 27,156 Income tax expense 2,501 6,890 Net income $ 4,409 $ 20,266 Allocated goodwill $ — $ — Consolidated Total Three Months Ended Mar 31, ($ in Thousands) 2022 2021 Net interest income $ 187,747 $ 175,902 Net intersegment interest income — — Segment net interest income 187,747 175,902 Noninterest income (a) 74,467 95,343 Total revenue 262,214 271,245 Provision for credit losses (3,990) (23,004) Noninterest expense 173,292 175,347 Income before income taxes 92,912 118,903 Income tax expense 18,650 24,602 Net income $ 74,262 $ 94,301 Allocated goodwill $ 1,104,992 $ 1,104,992

Accumulated Other Comprehensive

Accumulated Other Comprehensive Income (Loss)	3 Months Ended
	Mar. 31, 2022
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 March 31, 2022 and 2021, including changes during the preceding three month periods as well as any reclassifications out of accumulated other comprehensive income (loss): ($ in Thousands) Investment Defined Benefit Accumulated Balance December 31, 2021 $ (5,266) $ (5,051) $ (10,317) Other comprehensive (loss) before reclassifications (103,284) — (103,284) Unrealized (losses) on AFS securities transferred to HTM securities (67,604) — (67,604) Amounts reclassified from accumulated other comprehensive income (loss) Investment securities (gains), net (21) — (21) Investment securities HTM, net, at amortized cost 1,108 — 1,108 Personnel expense — (81) (81) Other expense — 74 74 Income tax benefit 43,098 2 43,100 Net other comprehensive (loss) during period (126,702) (6) (126,708) Balance March 31, 2022 $ (131,968) $ (5,057) $ (137,024) Balance December 31, 2020 $ 41,325 $ (28,707) $ 12,618 Other comprehensive (loss) before reclassifications (23,979) — (23,979) Amounts reclassified from accumulated other comprehensive income (loss) Investment securities losses , net 39 — 39 Investment securities HTM, net, at amortized cost 518 — 518 Personnel expense — (37) (37) Other expense — 1,050 1,050 Income tax (expense) benefit 5,851 (253) 5,598 Net other comprehensive income (loss) during period (17,571) 760 (16,811) Balance March 31, 2021 $ 23,754 $ (27,947) $ (4,193)

Revenue from Contracts with Cus

Revenue from Contracts with Customers	3 Months Ended
	Mar. 31, 2022
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 Mar 31, ($ in Thousands) 2022 2021 Wealth management fees $ 22,404 $ 22,414 Service charges and deposit account fees 3,784 3,941 Card-based fees (a) 417 346 Other revenue 1,235 664 Noninterest income (in-scope of Topic 606) $ 27,840 $ 27,365 Noninterest income (out-of-scope of Topic 606) (b) 9,950 14,464 Total noninterest income $ 37,790 $ 41,828 Community, Consumer, and Business Three Months Ended Mar 31, ($ in Thousands) 2022 2021 Service charges and deposit account fees $ 13,069 $ 10,900 Card-based fees (a) 9,524 9,414 Other revenue 1,862 3,674 Noninterest income (in-scope of Topic 606) $ 24,455 $ 23,988 Noninterest income (out-of-scope of Topic 606) 8,751 23,342 Total noninterest income $ 33,207 $ 47,331 Risk Management and Shared Services Three Months Ended Mar 31, ($ in Thousands) 2022 2021 Service charges and deposit account fees $ 3 $ 15 Card-based fees (a) 7 4 Other revenue 38 391 Noninterest income (in-scope of Topic 606) $ 49 $ 409 Noninterest income (out-of-scope of Topic 606) 3,421 5,775 Total noninterest income $ 3,470 $ 6,184 Consolidated Total Three Months Ended Mar 31, ($ in Thousands) 2022 2021 Wealth management fees $ 22,404 $ 22,414 Service charges and deposit account fees 16,856 14,855 Card-based fees (a) 9,949 9,764 Other revenue 3,135 4,729 Noninterest income (in-scope of Topic 606) $ 52,344 $ 51,762 Noninterest income (out-of-scope of Topic 606) (b) 22,123 43,581 Total noninterest income $ 74,467 $ 95,343 (a) Certain card-based fees are out-of-scope of Topic 606. (b) For the three months ended March 31, 2021, the Corporation recognized a $2 million pre-tax gain on the sale of Whitnell. Below is a listing of performance obligations for the Corporation's main revenue streams: Revenue Stream Noninterest income in-scope of Topic 606 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 is 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 and advisory fees (b) Brokerage and advisory 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. Payment 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 and advisory fees are included in wealth management fees.

Leases

Leases	3 Months Ended
	Mar. 31, 2022
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 and retail and corporate offices. These leases have original terms of 1 year or longer with remaining maturities up to 41 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: Three Months Ended Mar 31, ($ in Thousands) 2022 2021 Operating lease costs $ 1,798 $ 2,240 Finance lease costs 41 39 Operating lease cash flows 2,407 2,963 Finance lease cash flows 44 40 The lease classifications on the consolidated balance sheets were as follows: ($ in Thousands) Consolidated Balance Sheets Category Mar 31, 2022 Dec 31, 2021 Operating lease right-of-use asset Premises and equipment $ 28,354 $ 28,299 Finance lease right-of-use asset Other assets 545 143 Operating lease liability Accrued expenses and other liabilities 31,585 31,345 Finance lease liability Other long-term funding 562 163 The lease payment obligations, weighted-average remaining lease term, and weighted-average original discount rate were as follows: Mar 31, 2022 Dec 31, 2021 ($ 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 $ 191 1.25 0.44 % $ 192 1.50 0.45 % Retail and corporate offices 28,482 5.76 2.24 % 29,008 5.56 3.26 % Land 5,356 8.11 3.12 % 5,551 8.29 3.12 % Total operating leases $ 34,028 6.08 2.37 % $ 34,751 5.94 3.22 % Finance leases Retail and corporate offices $ 553 6.00 1.32 % $ 112 1.25 1.32 % Land 30 0.42 1.07 % 51 0.67 1.07 % Total finance leases $ 583 5.70 1.31 % $ 164 1.07 1.24 % 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 Total Leases Nine months ended December 31, 2022 $ 5,692 $ 98 $ 5,790 2023 6,252 92 6,344 2024 5,660 93 5,752 2025 4,363 93 4,456 2026 3,799 93 3,891 Beyond 2026 8,263 116 8,379 Total lease payments $ 34,028 $ 583 $ 34,611 Less: interest 2,444 21 2,465 Present value of lease payments $ 31,585 $ 562 $ 32,147

Summary of Significant Accoun_2

Summary of Significant Accounting Policies (Policies)	3 Months Ended
	Mar. 31, 2022
Accounting Standards Update and Change in Accounting Principle [Abstract]
New Accounting Pronouncements Adopted	New Accounting Pronouncements Adopted There were no applicable material accounting pronouncements adopted by the Corporation since December 31, 2021. Future Accounting Pronouncements The expected impact of applicable material accounting pronouncements recently issued or proposed but not yet required to be adopted are discussed in the table below. To the extent that the adoption of new accounting standards materially affects the Corporation's financial condition, results of operations, or liquidity, the impacts are discussed in the applicable sections of this financial review.

Earnings Per Common Share (Tabl

Earnings Per Common Share (Tables)	3 Months Ended
	Mar. 31, 2022
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 Mar 31, (In Thousands, except per share data) 2022 2021 Net income $ 74,262 $ 94,301 Preferred stock dividends (2,875) (5,207) Net income available to common equity $ 71,387 $ 89,094 Common shareholder dividends (30,372) (27,661) Unvested share-based payment awards (211) (209) Undistributed earnings $ 40,804 $ 61,224 Undistributed earnings allocated to common shareholders $ 40,548 $ 60,836 Undistributed earnings allocated to unvested share-based payment awards 256 387 Undistributed earnings $ 40,804 $ 61,224 Basic Distributed earnings to common shareholders $ 30,372 $ 27,661 Undistributed earnings allocated to common shareholders 40,548 60,836 Total common shareholders earnings, basic $ 70,920 $ 88,497 Diluted Distributed earnings to common shareholders $ 30,372 $ 27,661 Undistributed earnings allocated to common shareholders 40,548 60,836 Total common shareholders earnings, diluted $ 70,920 $ 88,497 Weighted average common shares outstanding 148,781 152,355 Effect of dilutive common stock awards 1,711 1,333 Diluted weighted average common shares outstanding 150,492 153,688 Basic earnings per common share $ 0.48 $ 0.58 Diluted earnings per common share $ 0.47 $ 0.58

Stock-Based Compensation (Table

Stock-Based Compensation (Tables)	3 Months Ended
	Mar. 31, 2022
Retirement Benefits [Abstract]
Summary of company's stock option activities	A summary of the Corporation’s stock option activity for the three months ended March 31, 2022 is presented below: Stock Options Shares (a) Weighted Average Weighted Average Remaining Contractual Term Aggregate Intrinsic Value (a) Outstanding at December 31, 2021 4,814 $ 20.72 5.96 years $ 12,532 Exercised (362) 17.65 Outstanding at March 31, 2022 4,452 $ 20.97 5.85 years $ 11,138 Options Exercisable at March 31, 2022 3,775 $ 21.29 5.52 years $ 8,661 (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 three months ended March 31, 2022: Restricted Stock Awards Shares (a) Weighted Average Outstanding at December 31, 2021 2,635 $ 19.87 Granted 650 23.69 Vested (618) 23.73 Forfeited (1) 21.97 Outstanding at March 31, 2022 2,666 $ 20.70 (a) In thousands

Investment Securities (Tables)

Investment Securities (Tables)	3 Months Ended
	Mar. 31, 2022
Investments, Debt and Equity Securities [Abstract]
Investment securities available for sale	The amortized cost and fair values of AFS and HTM securities at March 31, 2022 were as follows: ($ in Thousands) Amortized Gross Gross Fair Value Investment securities AFS U. S. Treasury securities $ 124,328 $ — $ (8,196) $ 116,132 Agency securities 15,000 — (800) 14,200 Obligations of state and political subdivisions (municipal securities) 368,831 3,764 (195) 372,401 Residential mortgage-related securities FNMA / FHLMC 1,993,893 937 (100,011) 1,894,819 GNMA 59,470 166 (726) 58,909 Commercial mortgage-related securities FNMA / FHLMC 19,290 496 — 19,786 GNMA 128,019 18 (1,278) 126,760 Asset backed securities FFELP 173,068 — (4,090) 168,978 SBA 5,865 33 (53) 5,845 Other debt securities 3,000 — (27) 2,973 Total investment securities AFS $ 2,890,763 $ 5,416 $ (115,376) $ 2,780,803 Investment securities HTM U. S. Treasury securities $ 998 $ — $ (34) $ 964 Obligations of state and political subdivisions (municipal securities) 1,696,536 32,201 (80,896) 1,647,842 Residential mortgage-related securities FNMA / FHLMC 956,470 35,739 (72,418) 919,790 GNMA 44,742 116 (643) 44,215 Private-label 384,016 13,460 (28,955) 368,521 Commercial mortgage-related securities FNMA/FHLMC 764,775 17,620 (88,784) 693,610 GNMA 92,383 1,032 (3,456) 89,959 Total investment securities HTM $ 3,939,920 $ 100,167 $ (275,186) $ 3,764,901 The amortized cost and fair values of AFS and HTM securities at December 31, 2021 were as follows: ($ in Thousands) Amortized Gross Gross Fair Value Investment securities AFS U. S. Treasury securities $ 124,291 $ — $ (1,334) $ 122,957 Agency securities 15,000 — (103) 14,897 Obligations of state and political subdivisions (municipal securities) 381,517 18,940 — 400,457 Residential mortgage-related securities FNMA / FHLMC 2,709,399 3,729 (21,249) 2,691,879 GNMA 66,189 1,591 — 67,780 Private-label 332,028 31 (2,335) 329,724 Commercial mortgage-related securities FNMA / FHLMC 357,240 2,686 (9,302) 350,623 GNMA 165,439 1,360 — 166,799 Asset backed securities FFELP 177,974 475 (1,123) 177,325 SBA 6,594 39 (54) 6,580 Other debt securities 3,000 — (6) 2,994 Total investment securities AFS $ 4,338,671 $ 28,850 $ (35,506) $ 4,332,015 Investment securities HTM U. S. Treasury securities $ 1,000 $ 1 $ — $ 1,001 Obligations of state and political subdivisions (municipal securities) 1,628,759 113,179 (1,951) 1,739,988 Residential mortgage-related securities FNMA / FHLMC 34,347 1,792 — 36,139 GNMA 48,053 1,578 — 49,631 Commercial mortgage-related securities FNMA / FHLMC 425,937 122 (6,659) 419,400 GNMA 100,907 1,799 (200) 102,506 Total investment securities HTM $ 2,239,003 $ 118,471 $ (8,809) $ 2,348,664
Investment securities held to maturity	The amortized cost and fair values of AFS and HTM securities at March 31, 2022 were as follows: ($ in Thousands) Amortized Gross Gross Fair Value Investment securities AFS U. S. Treasury securities $ 124,328 $ — $ (8,196) $ 116,132 Agency securities 15,000 — (800) 14,200 Obligations of state and political subdivisions (municipal securities) 368,831 3,764 (195) 372,401 Residential mortgage-related securities FNMA / FHLMC 1,993,893 937 (100,011) 1,894,819 GNMA 59,470 166 (726) 58,909 Commercial mortgage-related securities FNMA / FHLMC 19,290 496 — 19,786 GNMA 128,019 18 (1,278) 126,760 Asset backed securities FFELP 173,068 — (4,090) 168,978 SBA 5,865 33 (53) 5,845 Other debt securities 3,000 — (27) 2,973 Total investment securities AFS $ 2,890,763 $ 5,416 $ (115,376) $ 2,780,803 Investment securities HTM U. S. Treasury securities $ 998 $ — $ (34) $ 964 Obligations of state and political subdivisions (municipal securities) 1,696,536 32,201 (80,896) 1,647,842 Residential mortgage-related securities FNMA / FHLMC 956,470 35,739 (72,418) 919,790 GNMA 44,742 116 (643) 44,215 Private-label 384,016 13,460 (28,955) 368,521 Commercial mortgage-related securities FNMA/FHLMC 764,775 17,620 (88,784) 693,610 GNMA 92,383 1,032 (3,456) 89,959 Total investment securities HTM $ 3,939,920 $ 100,167 $ (275,186) $ 3,764,901 The amortized cost and fair values of AFS and HTM securities at December 31, 2021 were as follows: ($ in Thousands) Amortized Gross Gross Fair Value Investment securities AFS U. S. Treasury securities $ 124,291 $ — $ (1,334) $ 122,957 Agency securities 15,000 — (103) 14,897 Obligations of state and political subdivisions (municipal securities) 381,517 18,940 — 400,457 Residential mortgage-related securities FNMA / FHLMC 2,709,399 3,729 (21,249) 2,691,879 GNMA 66,189 1,591 — 67,780 Private-label 332,028 31 (2,335) 329,724 Commercial mortgage-related securities FNMA / FHLMC 357,240 2,686 (9,302) 350,623 GNMA 165,439 1,360 — 166,799 Asset backed securities FFELP 177,974 475 (1,123) 177,325 SBA 6,594 39 (54) 6,580 Other debt securities 3,000 — (6) 2,994 Total investment securities AFS $ 4,338,671 $ 28,850 $ (35,506) $ 4,332,015 Investment securities HTM U. S. Treasury securities $ 1,000 $ 1 $ — $ 1,001 Obligations of state and political subdivisions (municipal securities) 1,628,759 113,179 (1,951) 1,739,988 Residential mortgage-related securities FNMA / FHLMC 34,347 1,792 — 36,139 GNMA 48,053 1,578 — 49,631 Commercial mortgage-related securities FNMA / FHLMC 425,937 122 (6,659) 419,400 GNMA 100,907 1,799 (200) 102,506 Total investment securities HTM $ 2,239,003 $ 118,471 $ (8,809) $ 2,348,664
Amortized cost and fair values of investment securities by contractual maturity	The expected maturities of AFS and HTM securities at March 31, 2022, are shown below: AFS HTM ($ in Thousands) Amortized Fair Amortized Fair Due in one year or less $ 5,167 $ 5,171 $ 18,432 $ 18,503 Due after one year through five years 89,914 87,185 34,156 34,343 Due after five years through ten years 378,692 374,733 163,456 164,057 Due after ten years 37,386 38,617 1,481,489 1,431,903 Total debt securities 511,159 505,706 1,697,534 1,648,806 Residential mortgage-related securities FNMA / FHLMC 1,993,893 1,894,819 956,470 919,790 GNMA 59,470 58,909 44,742 44,215 Private-label — — 384,016 368,521 Commercial mortgage-related securities FNMA / FHLMC 19,290 19,786 764,775 693,610 GNMA 128,019 126,760 92,383 89,959 Asset backed securities FFELP 173,068 168,978 — — SBA 5,865 5,845 — — Total investment securities $ 2,890,763 $ 2,780,803 $ 3,939,920 $ 3,764,901 Ratio of fair value to amortized cost 96.2 % 95.6 %
Debt Securities, Held-to-maturity, Credit Quality Indicator	The following table summarizes the credit quality indicators of HTM securities at amortized cost at March 31, 2022: ($ in Thousands) AAA AA A Not Rated Total U. S. Treasury securities $ 998 $ — $ — $ — $ 998 Obligations of state and political subdivisions (municipal securities) 762,066 920,883 12,692 895 1,696,536 Residential mortgage-related securities FNMA / FHLMC 956,470 — — — 956,470 GNMA 44,742 — — — 44,742 Private-label 384,016 — — — 384,016 Commercial mortgage-related securities FNMA / FHLMC 764,775 — — — 764,775 GNMA 92,383 — — — 92,383 Total HTM securities $ 3,005,450 $ 920,883 $ 12,692 $ 895 $ 3,939,920 The following table summarizes the credit quality indicators of HTM securities at amortized cost at December 31, 2021: ($ in Thousands) AAA AA A Not Rated Total U. S. Treasury securities $ 1,000 $ — $ — $ — $ 1,000 Obligations of state and political subdivisions (municipal securities) 702,399 914,591 10,873 896 1,628,759 Residential mortgage-related securities FNMA / FHLMC 34,347 — — — 34,347 GNMA 48,053 — — — 48,053 Commercial mortgage-related securities FNMA / FHLMC 425,937 — — — 425,937 GNMA 100,907 — — — 100,907 Total HTM securities $ 1,312,642 $ 914,591 $ 10,873 $ 896 $ 2,239,003
Realized gains and losses and proceeds from sale	The proceeds from the sale of AFS investment securities for the three months ended March 31, 2022 and 2021, are shown below: Three Months Ended Mar 31, ($ in Thousands) 2022 2021 Gross gains on AFS securities $ 21 $ 36 Gross (losses) on AFS securities — (75) Investment securities gains (losses), net 21 (39) Proceeds from sales of investment securities AFS $ 734 $ 51,295
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 AFS and HTM securities, aggregated by investment category and length of time individual securities have been in a continuous unrealized loss position, at March 31, 2022: Less than 12 months 12 months or more Total ($ in Thousands) Number Unrealized Fair Number Unrealized Fair Unrealized Fair Investment securities AFS U.S. Treasury securities 5 $ (7,346) $ 107,050 2 (850) $ 9,082 $ (8,196) $ 116,132 Agency securities 1 (800) 14,200 — — — (800) 14,200 Obligations of state and political subdivisions (municipal securities) 64 (195) 35,501 — — — (195) 35,501 Residential mortgage-related securities FNMA / FHLMC 88 (80,850) 1,617,123 8 (19,161) 235,380 (100,011) 1,852,503 GNMA 9 (726) 44,614 — — — (726) 44,614 GNMA commercial mortgage-related securities 31 (1,278) 113,831 — — — (1,278) 113,831 Asset backed securities FFELP 7 (1,955) 110,489 8 (2,135) 58,489 (4,090) 168,978 SBA — — — 8 (53) 2,763 (53) 2,763 Other debt securities 2 (27) 1,973 — — — (27) 1,973 Total 207 $ (93,177) $ 2,044,781 26 $ (22,199) $ 305,713 $ (115,376) $ 2,350,494 Investment securities HTM U.S. Treasury securities 1 $ (34) $ 964 — $ — $ — $ (34) $ 964 Obligations of state and political subdivisions (municipal securities) 346 (79,571) 576,351 5 (1,325) 5,100 (80,896) 581,451 Residential mortgage-related securities FNMA / FHLMC 51 (72,418) 896,284 — — — (72,418) 896,284 GNMA 46 (643) 33,468 — — — (643) 33,468 Private-label 18 (28,955) 368,521 — — — (28,955) 368,521 Commercial mortgage-related securities FNMA / FHLMC 15 (79,178) 342,543 7 (9,606) 72,787 (88,784) 415,331 GNMA 33 (3,456) 368,244 — — — (3,456) 368,244 Total 510 $ (264,255) $ 2,586,375 12 $ (10,930) $ 77,887 $ (275,186) $ 2,664,262 For comparative purposes, the following represents gross unrealized losses and the related fair value of AFS and HTM securities, aggregated by investment category and length of time that individual securities have been in a continuous unrealized loss position, at December 31, 2021: Less than 12 months 12 months or more Total ($ in Thousands) Number Unrealized Fair Number Unrealized Fair Unrealized Fair Investment securities AFS U.S. Treasury securities 7 $ (1,334) $ 122,957 — $ — $ — $ (1,334) $ 122,957 Agency securities 1 (103) 14,897 — — — (103) 14,897 Residential mortgage-related securities FNMA / FHLMC 74 (21,249) 2,172,837 — — — (21,249) 2,172,837 Private-label 12 (2,335) 248,617 — — — (2,335) 248,617 FNMA / FHLMC commercial mortgage-related securities 19 (9,302) 328,568 — — — (9,302) 328,568 Asset backed securities FFELP 4 (256) 64,282 8 (867) 62,576 (1,123) 126,858 SBA — — — 9 (54) 3,902 (54) 3,902 Other debt securities 3 (6) 2,994 — — — (6) 2,994 Total 120 $ (34,586) $ 2,955,152 17 $ (920) $ 66,478 $ (35,506) $ 3,021,630 Investment securities HTM Obligations of state and political subdivisions (municipal securities) 49 $ (1,951) $ 112,038 — $ — $ — $ (1,951) $ 112,038 Commercial mortgage-related securities FNMA/FHLMC 18 (6,272) 388,072 1 $ (387) $ 10,775 (6,659) 398,847 GNMA 5 (200) 33,468 — — — (200) 33,468 Total 72 $ (8,422) $ 533,577 1 $ (387) $ 10,775 $ (8,809) $ 544,352

Loans Loans (Tables)

Loans Loans (Tables)	3 Months Ended	12 Months Ended
	Mar. 31, 2022	Dec. 31, 2021
Receivables [Abstract]
Loan composition	The period end loan composition was as follows: ($ in Thousands) Mar 31, 2022 Dec 31, 2021 PPP $ 17,995 $ 66,070 Asset-based lending & equipment finance (a) 231,040 178,027 Commercial and industrial 8,102,380 8,208,289 Commercial real estate — owner occupied 973,572 971,326 Commercial and business lending 9,324,986 9,423,711 Commercial real estate — investor 4,469,241 4,384,569 Real estate construction 1,760,076 1,808,976 Commercial real estate lending 6,229,317 6,193,545 Total commercial 15,554,303 15,617,256 Residential mortgage 7,609,343 7,567,310 Auto finance 497,523 143,045 Home equity 580,867 595,615 Other consumer 289,889 301,723 Total consumer 8,977,622 8,607,693 Total loans $ 24,531,926 $ 24,224,949 (a) Periods prior to Mar 31, 2022 do not include equipment finance .
Commercial and consumer loans by credit quality indicator	he following table presents commercial and consumer loans by credit quality indicator by vintage year at March 31, 2022: Term Loans Amortized Cost Basis by Origination Year (a) ($ in Thousands) Rev Loans Converted to Term (a) Rev Loans Amortized Cost Basis YTD 2022 2021 2020 2019 2018 Prior Total PPP: (b) Risk rating: Pass $ — $ — $ — $ 16,118 $ 1,782 $ — $ — $ — $ 17,900 Potential Problem — — — — 54 — — — 54 Nonaccrual — — — — 41 — — — 41 PPP $ — $ — $ — $ 16,118 $ 1,877 $ — $ — $ — $ 17,995 Asset-based lending & equipment finance: Risk rating: Pass $ — $ 27,624 $ 22,962 $ 116,851 $ 42,930 $ 1,243 $ 223 $ 150 $ 211,982 Potential Problem — 2,057 — — 17,000 — — — 19,057 Asset-based lending & equipment finance $ — $ 29,681 $ 22,962 $ 116,851 $ 59,930 $ 1,243 $ 223 $ 150 $ 231,040 Commercial and industrial: Risk rating: Pass $ — $ 2,113,051 $ 320,013 $ 2,622,986 $ 802,154 $ 905,744 $ 582,722 $ 602,568 $ 7,949,237 Special Mention — 11,619 — 5,900 3,226 — — 38,777 59,521 Potential Problem 37 3,793 17,540 1,369 3,540 45,200 20,584 1,372 93,396 Nonaccrual 71 — 71 — 154 — — — 225 Commercial and industrial $ 108 $ 2,128,462 $ 337,623 $ 2,630,255 $ 809,074 $ 950,944 $ 603,306 $ 642,716 $ 8,102,380 Commercial real estate - owner occupied: Risk rating: Pass $ — $ 19,947 $ 28,850 $ 273,534 $ 183,174 $ 181,284 $ 106,991 $ 154,061 $ 947,840 Special Mention — 247 — — 1,310 — — 169 1,726 Potential Problem — — 635 5,632 2,195 10,571 — 4,972 24,005 Commercial real estate - owner occupied $ — $ 20,194 $ 29,485 $ 279,166 $ 186,678 $ 191,855 $ 106,991 $ 159,202 $ 973,572 Commercial and business lending: Risk rating: Pass $ — $ 2,160,622 $ 371,825 $ 3,029,488 $ 1,030,039 $ 1,088,271 $ 689,936 $ 756,778 $ 9,126,959 Special Mention — 11,865 — 5,900 4,537 — — 38,946 61,248 Potential Problem 37 5,850 18,175 7,001 22,788 55,771 20,584 6,344 136,513 Nonaccrual 71 — 71 — 195 — — — 266 Commercial and business lending $ 108 $ 2,178,337 $ 390,071 $ 3,042,390 $ 1,057,559 $ 1,144,041 $ 710,520 $ 802,068 $ 9,324,986 Commercial real estate - investor: Risk rating: Pass $ — $ 90,319 $ 391,108 $ 1,616,587 $ 704,283 $ 713,819 $ 308,963 $ 318,092 $ 4,143,170 Special Mention — — 2,750 55,652 16,289 32,847 — 6,855 114,393 Potential Problem — — 21,291 21,155 28,694 25,722 28,804 5,125 130,792 Nonaccrual — — 573 65,404 7,906 7,003 — — 80,886 Commercial real estate - investor $ — $ 90,319 $ 415,721 $ 1,758,799 $ 757,172 $ 779,391 $ 337,767 $ 330,071 $ 4,469,241 Real estate construction: Risk rating: Pass $ — $ 27,848 $ 105,439 $ 867,680 $ 517,765 $ 152,883 $ 45,941 $ 12,395 $ 1,729,950 Special Mention — — — 934 11,929 16,454 — — 29,317 Potential Problem — — — 84 116 — — — 200 Nonaccrual — — — — — — — 609 609 Real estate construction $ — $ 27,848 $ 105,439 $ 868,698 $ 529,810 $ 169,337 $ 45,941 $ 13,004 $ 1,760,076 Term Loans Amortized Cost Basis by Origination Year (a) ($ in Thousands) Rev Loans Converted to Term (a) Rev Loans Amortized Cost Basis YTD 2022 2021 2020 2019 2018 Prior Total Commercial real estate lending: Risk rating: Pass $ — $ 118,167 $ 496,547 $ 2,484,267 $ 1,222,047 $ 866,702 $ 354,904 $ 330,487 $ 5,873,120 Special Mention — — 2,750 56,586 28,218 49,302 — 6,855 143,711 Potential Problem — — 21,291 21,239 28,810 25,722 28,804 5,125 130,992 Nonaccrual — — 573 65,404 7,906 7,003 — 609 81,495 Commercial real estate lending $ — $ 118,167 $ 521,160 $ 2,627,496 $ 1,286,982 $ 948,729 $ 383,708 $ 343,075 $ 6,229,317 Total commercial: Risk rating: Pass $ — $ 2,278,789 $ 868,372 $ 5,513,755 $ 2,252,087 $ 1,954,972 $ 1,044,840 $ 1,087,265 $ 15,000,080 Special Mention — 11,865 2,750 62,486 32,755 49,302 — 45,800 204,958 Potential Problem 37 5,850 39,466 28,241 51,598 81,493 49,388 11,469 267,505 Nonaccrual 71 — 644 65,404 8,101 7,003 — 609 81,761 Total commercial $ 108 $ 2,296,504 $ 911,231 $ 5,669,886 $ 2,344,541 $ 2,092,770 $ 1,094,228 $ 1,145,143 $ 15,554,303 Residential mortgage: Risk rating: Pass $ — $ — $ 247,943 $ 1,874,892 $ 1,859,312 $ 916,031 $ 407,380 $ 2,246,835 $ 7,552,394 Special Mention — — — — — — — 90 90 Potential Problem — — 276 468 288 578 280 1,142 3,032 Nonaccrual — — 979 2,160 3,102 3,955 6,946 36,684 53,827 Residential mortgage $ — $ — $ 249,198 $ 1,877,520 $ 1,862,703 $ 920,564 $ 414,606 $ 2,284,751 $ 7,609,343 Auto finance: Risk rating: Pass $ — $ — $ 357,813 $ 135,564 $ 578 $ 2,262 $ 921 $ 295 $ 497,432 Special Mention — — — 42 — — — 1 42 Nonaccrual — — — — — 35 14 — 49 Auto finance $ — $ — $ 357,813 $ 135,606 $ 578 $ 2,296 $ 934 $ 296 $ 497,523 Home equity: Risk rating: Pass $ 2,698 $ 486,976 $ 2,212 $ 2,245 $ 1,480 $ 6,900 $ 8,143 $ 64,691 $ 572,646 Special Mention 91 122 — — — 14 56 384 575 Potential Problem — — — — — — 10 146 156 Nonaccrual 171 55 — 9 119 145 328 6,834 7,490 Home equity $ 2,960 $ 487,152 $ 2,212 $ 2,254 $ 1,599 $ 7,058 $ 8,537 $ 72,054 $ 580,867 Other consumer: Risk rating: Pass $ 76 $ 174,209 $ 1,843 $ 9,113 $ 3,504 $ 2,109 $ 340 $ 98,217 $ 289,335 Special Mention 4 429 — 10 12 — — 8 459 Nonaccrual 1 49 — — 12 6 — 28 95 Other consumer $ 80 $ 174,687 $ 1,843 $ 9,123 $ 3,528 $ 2,115 $ 340 $ 98,253 $ 289,889 Total consumer: Risk rating: Pass $ 2,774 $ 661,185 $ 609,810 $ 2,021,815 $ 1,864,874 $ 927,302 $ 416,784 $ 2,410,038 $ 8,911,807 Special Mention 94 551 — 52 12 14 56 482 1,167 Potential Problem — — 276 468 288 578 290 1,288 3,188 Nonaccrual 171 103 979 2,169 3,234 4,141 7,288 43,546 61,460 Total consumer $ 3,040 $ 661,840 $ 611,065 $ 2,024,504 $ 1,868,408 $ 932,034 $ 424,418 $ 2,455,354 $ 8,977,622 Total loans: Risk rating: Pass (c) $ 2,774 $ 2,939,973 $ 1,478,182 $ 7,535,570 $ 4,116,960 $ 2,882,275 $ 1,461,624 $ 3,497,303 $ 23,911,887 Special Mention 94 12,417 2,750 62,538 32,767 49,315 56 46,283 206,125 Potential Problem 37 5,850 39,742 28,709 51,886 82,071 49,678 12,757 270,693 Nonaccrual 242 103 1,623 67,573 11,335 11,143 7,288 44,154 143,221 Total loans $ 3,148 $ 2,958,343 $ 1,522,296 $ 7,694,390 $ 4,212,949 $ 3,024,804 $ 1,518,646 $ 3,600,497 $ 24,531,926 (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) Accruing TDRs are included in pass unless otherwise rated as special mention. The following table presents commercial and consumer loans by credit quality indicator by vintage year at December 31, 2021: Term Loans Amortized Cost Basis by Origination Year (a) ($ in Thousands) Rev Loans Converted to Term (a) Rev Loans Amortized Cost Basis 2021 2020 2019 2018 2017 Prior Total PPP: (b) Risk rating: Pass $ — $ — $ 44,921 $ 18,610 $ — $ — $ — $ — $ 63,531 Special Mention — — 212 281 — — — — 493 Potential Problem — — 2,000 — — — — — 2,000 Nonaccrual — — — 46 — — — — 46 PPP $ — $ — $ 47,134 $ 18,936 $ — $ — $ — $ — $ 66,070 Commercial and industrial: (c) Risk rating: Pass $ 2,084 $ 2,371,605 $ 2,631,753 $ 852,758 $ 986,300 $ 710,491 $ 177,568 $ 493,876 $ 8,224,351 Special Mention — 7,068 5,900 1,695 — — — 2,811 17,474 Potential Problem 2,706 26,387 23,415 19,960 46,296 20,924 104 1,172 138,258 Nonaccrual 76 — 5,996 161 52 24 — — 6,233 Commercial and industrial $ 4,867 $ 2,405,059 $ 2,667,064 $ 874,575 $ 1,032,647 $ 731,439 $ 177,671 $ 497,860 $ 8,386,316 Commercial real estate - owner occupied: Risk rating: Pass $ 10,092 $ 30,869 $ 261,418 $ 178,424 $ 187,073 $ 110,169 $ 54,538 $ 117,011 $ 939,503 Special Mention — 226 — 4,628 — — — 245 5,100 Potential Problem — 526 5,953 4,721 10,047 727 2,204 2,546 26,723 Commercial real estate - owner occupied $ 10,092 $ 31,621 $ 267,371 $ 187,773 $ 197,120 $ 110,896 $ 56,742 $ 119,802 $ 971,326 Commercial and business lending: Risk rating: Pass $ 12,176 $ 2,402,474 $ 2,938,092 $ 1,049,792 $ 1,173,373 $ 820,660 $ 232,106 $ 610,887 $ 9,227,385 Special Mention — 7,294 6,112 6,604 — — — 3,056 23,066 Potential Problem 2,706 26,913 31,368 24,681 56,343 21,651 2,307 3,718 166,981 Nonaccrual 76 — 5,996 207 52 24 — — 6,279 Commercial and business lending $ 14,958 $ 2,436,680 $ 2,981,569 $ 1,081,284 $ 1,229,767 $ 842,335 $ 234,414 $ 617,662 $ 9,423,711 Commercial real estate - investor: Risk rating: Pass $ 37,430 $ 105,521 $ 1,650,936 $ 685,423 $ 867,606 $ 414,079 $ 139,320 $ 230,452 $ 4,093,337 Special Mention — — 57,163 27,384 33,016 72 — 6,781 124,416 Potential Problem — — 21,309 9,860 22,243 34,591 3,564 14,573 106,138 Nonaccrual — — 45,502 8,158 6,820 — — 197 60,677 Commercial real estate - investor $ 37,430 $ 105,521 $ 1,774,910 $ 730,825 $ 929,685 $ 448,741 $ 142,883 $ 252,003 $ 4,384,569 Real estate construction: Risk rating: Pass $ — $ 31,773 $ 843,664 $ 614,469 $ 204,337 $ 48,647 $ 2,229 $ 12,212 $ 1,757,331 Special Mention — — 2,203 11,929 — 15,885 41 2 30,060 Potential Problem — — 37 120 21,251 — — — 21,408 Nonaccrual — — — — — — — 177 177 Real estate construction $ — $ 31,773 $ 845,903 $ 626,518 $ 225,588 $ 64,532 $ 2,270 $ 12,392 $ 1,808,976 Commercial real estate lending: Risk rating: Pass $ 37,430 $ 137,294 $ 2,494,600 $ 1,299,893 $ 1,071,943 $ 462,726 $ 141,549 $ 242,664 $ 5,850,668 Special Mention — — 59,366 39,313 33,016 15,957 41 6,784 154,476 Potential Problem — — 21,345 9,980 43,494 34,591 3,564 14,573 127,546 Nonaccrual — — 45,502 8,158 6,820 — — 374 60,855 Commercial real estate lending $ 37,430 $ 137,294 $ 2,620,814 $ 1,357,343 $ 1,155,273 $ 513,273 $ 145,153 $ 264,395 $ 6,193,545 Term Loans Amortized Cost Basis by Origination Year (a) ($ in Thousands) Rev Loans Converted to Term (a) Rev Loans Amortized Cost Basis 2021 2020 2019 2018 2017 Prior Total Total commercial: Risk rating: Pass $ 49,606 $ 2,539,768 $ 5,432,693 $ 2,349,685 $ 2,245,316 $ 1,283,386 $ 373,655 $ 853,551 $ 15,078,053 Special Mention — 7,294 65,478 45,917 33,016 15,957 41 9,840 177,543 Potential Problem 2,706 26,913 52,713 34,660 99,837 56,241 5,871 18,291 294,527 Nonaccrual 76 — 51,498 8,365 6,872 24 — 374 67,134 Total commercial $ 52,388 $ 2,573,974 $ 5,602,382 $ 2,438,627 $ 2,385,040 $ 1,355,608 $ 379,567 $ 882,057 $ 15,617,256 Residential mortgage: Risk rating: Pass $ — $ — $ 1,771,447 $ 1,945,029 $ 974,188 $ 428,459 $ 673,447 $ 1,716,419 $ 7,508,989 Special Mention — — — — — 285 — 461 746 Potential Problem — — 475 332 404 265 81 658 2,214 Nonaccrual — — 1,993 2,911 4,479 6,224 6,019 33,734 55,362 Residential mortgage $ — $ — $ 1,773,915 $ 1,948,272 $ 979,071 $ 435,233 $ 679,547 $ 1,751,272 $ 7,567,310 Auto finance: Risk rating: Pass $ — $ — $ 137,952 $ 707 $ 2,675 $ 1,200 $ 352 $ 107 $ 142,993 Nonaccrual — — — — 36 15 — — 52 Auto finance $ — $ — $ 137,952 $ 707 $ 2,711 $ 1,216 $ 352 $ 107 $ 143,045 Home equity: Risk rating: Pass $ 6,728 $ 498,970 $ 1,216 $ 1,401 $ 7,640 $ 8,742 $ 7,660 $ 61,251 $ 586,880 Special Mention 133 100 — 102 4 — — 638 844 Potential Problem 6 — 6 — — 13 — 146 165 Nonaccrual 925 35 9 92 211 305 302 6,772 7,726 Home equity $ 7,792 $ 499,104 $ 1,232 $ 1,595 $ 7,856 $ 9,059 $ 7,962 $ 68,807 $ 595,615 Other consumer: Risk rating: Pass $ 443 $ 180,312 $ 9,297 $ 4,987 $ 2,884 $ 371 $ 265 $ 103,075 $ 301,191 Special Mention 7 351 — 4 — — — 7 363 Nonaccrual 6 120 — 14 7 — 19 11 170 Other consumer $ 456 $ 180,783 $ 9,297 $ 5,005 $ 2,890 $ 371 $ 284 $ 103,093 $ 301,723 Total consumer: Risk rating: Pass $ 7,171 $ 679,353 $ 1,919,912 $ 1,952,124 $ 987,387 $ 438,771 $ 681,725 $ 1,880,781 $ 8,540,053 Special Mention 140 451 — 106 4 285 — 1,106 1,952 Potential Problem 6 — 481 332 404 277 81 804 2,379 Nonaccrual 931 154 2,003 3,017 4,733 6,545 6,340 40,517 63,309 Total consumer $ 8,248 $ 679,959 $ 1,922,396 $ 1,955,579 $ 992,528 $ 445,878 $ 688,145 $ 1,923,208 $ 8,607,693 Total loans: Risk rating: Pass (d) $ 56,777 $ 3,219,121 $ 7,352,605 $ 4,301,809 $ 3,232,703 $ 1,722,157 $ 1,055,380 $ 2,734,332 $ 23,618,106 Special Mention 140 7,745 65,478 46,023 33,021 16,241 41 10,946 179,495 Potential Problem 2,713 26,913 53,194 34,992 100,240 56,519 5,952 19,095 296,905 Nonaccrual 1,006 154 53,501 11,382 11,605 6,569 6,340 40,891 130,443 Total loans $ 60,636 $ 3,253,933 $ 7,524,778 $ 4,394,206 $ 3,377,569 $ 1,801,486 $ 1,067,713 $ 2,805,265 $ 24,224,949 (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 asset-based lending & equipment finance. (d) Accruing TDRs are included in pass unless otherwise rated as special mention.
Summarized details of Loans	The following table presents loans by past due status at March 31, 2022: Accruing ($ in Thousands) Current 30-59 Days 60-89 Days 90+ Days Nonaccrual (a)(b) Total PPP $ 17,953 $ — $ 1 $ — $ 41 $ 17,995 Asset-based lending & equipment finance 231,040 — — — — 231,040 Commercial and industrial 8,100,945 923 162 125 225 8,102,380 Commercial real estate - owner occupied 973,374 198 — — — 973,572 Commercial and business lending 9,323,311 1,121 163 125 266 9,324,986 Commercial real estate - investor 4,388,355 — — — 80,886 4,469,241 Real estate construction 1,759,467 — — — 609 1,760,076 Commercial real estate lending 6,147,823 — — — 81,495 6,229,317 Total commercial 15,471,134 1,121 163 125 81,761 15,554,303 Residential mortgage 7,550,015 4,867 90 544 53,827 7,609,343 Auto finance 496,526 906 42 — 49 497,523 Home equity 569,170 3,632 575 — 7,490 580,867 Other consumer 287,636 707 525 926 95 289,889 Total consumer 8,903,347 10,112 1,232 1,470 61,460 8,977,622 Total loans $ 24,374,481 $ 11,233 $ 1,396 $ 1,595 $ 143,221 $ 24,531,926 (a) Of the total nonaccrual loans, $98 million, or 69%, were current with respect to payment at March 31, 2022. (b) No interest income was recognized on nonaccrual loans for the three months ended March 31, 2022. In addition, there were $24 million of nonaccrual loans for which there was no related ACLL at March 31, 2022. The following table presents loans by past due status at December 31, 2021: Accruing ($ in Thousands) Current 30-59 Days 60-89 Days 90+ Days Nonaccrual (a)(b) Total PPP $ 65,941 $ 40 $ 43 $ — $ 46 $ 66,070 Asset-based lending 178,027 — — — — 178,027 Commercial and industrial (c) 8,201,272 579 54 151 6,233 8,208,289 Commercial real estate - owner occupied 971,163 163 — — — 971,326 Commercial and business lending 9,416,403 781 97 151 6,279 9,423,711 Commercial real estate - investor 4,323,276 142 474 — 60,677 4,384,569 Real estate construction 1,807,178 1,618 2 — 177 1,808,976 Commercial real estate lending 6,130,454 1,759 477 — 60,855 6,193,545 Total commercial 15,546,857 2,541 573 151 67,134 15,617,256 Residential mortgage 7,505,654 5,500 669 126 55,362 7,567,310 Auto finance 142,982 11 — — 52 143,045 Home equity 584,177 2,867 844 — 7,726 595,615 Other consumer 298,261 1,835 472 986 170 301,723 Total consumer 8,531,074 10,213 1,985 1,111 63,309 8,607,693 Total loans $ 24,077,931 $ 12,754 $ 2,558 $ 1,263 $ 130,443 $ 24,224,949 (a) Of the total nonaccrual loans, $84 million, or 65%, were current with respect to payment at December 31, 2021. (b) No interest income was recognized on nonaccrual loans for the year ended December 31, 2021. In addition, there were $9 million of nonaccrual loans for which there was no related ACLL at December 31, 2021. (c) Includes equipment finance.
Nonaccrual and performing restructured loans	The following table presents nonaccrual and performing restructured loans by loan portfolio: Mar 31, 2022 Dec 31, 2021 ($ in Thousands) Performing Nonaccrual Restructured Loans (a) Performing Nonaccrual Restructured Loans (a) Commercial and industrial $ 7,426 $ — $ 8,687 $ — Commercial real estate — owner occupied 473 — 967 — Commercial real estate — investor 2,045 3,042 12,866 3,093 Real estate construction 183 44 242 45 Residential mortgage 16,644 15,336 16,316 13,483 Home equity 2,486 931 2,648 806 Other consumer 747 — 803 — Total restructured loans $ 30,003 $ 19,352 $ 42,530 $ 17,426 (a) Nonaccrual restructured loans have been included within nonaccrual loans.
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 three months ended March 31, 2022 and 2021: Three months ended Mar 31, 2022 Three months ended Mar 31, 2021 ($ in Thousands) Number Recorded Investment (a) Unpaid Principal Balance (b) Number Recorded Investment (a) Unpaid Principal Balance (b) Commercial real estate — investor — $ — $ — 4 $ 1,693 $ 1,693 Residential mortgage 24 6,421 6,502 20 3,876 3,902 Home equity 3 80 101 1 430 430 Total loans modified 27 $ 6,500 $ 6,603 25 $ 5,999 $ 6,025 (a) Represents post-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 three months ended March 31, 2022 and 2021, and the recorded investment in these restructured loans as of March 31, 2022 and 2021: Three months ended Mar 31, 2022 Three months ended Mar 31, 2021 ($ in Thousands) Number of Recorded Number of Recorded Residential mortgage 1 $ 884 1 $ 97
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 three months ended March 31, 2022: ($ in Thousands) Dec 31, 2021 Charge offs Recoveries Net Charge offs Provision for credit losses Mar 31, 2022 ACLL / Loans Allowance for loan losses PPP $ 51 $ — $ — $ — $ (39) $ 11 Asset-based lending & equipment finance 4,182 — — — 901 5,083 Commercial and industrial 85,624 (1,104) 2,958 1,854 (5,485) 81,993 Commercial real estate — owner occupied 11,473 — 3 3 (349) 11,127 Commercial and business lending 101,330 (1,104) 2,961 1,857 (4,973) 98,214 Commercial real estate — investor 72,803 — — — 558 73,361 Real estate construction 37,643 — 32 32 2,082 39,757 Commercial real estate lending 110,446 — 32 32 2,640 113,118 Total commercial 211,776 (1,104) 2,993 1,889 (2,333) 211,332 Residential mortgage 40,787 (43) 331 288 (3,974) 37,101 Auto finance 1,999 (23) 26 4 4,188 6,190 Home equity 14,011 (125) 440 315 (995) 13,331 Other consumer 11,441 (733) 282 (451) 114 11,104 Total consumer 68,239 (924) 1,079 155 (667) 67,727 Total loans $ 280,015 $ (2,028) $ 4,072 $ 2,044 $ (3,000) $ 279,058 Allowance for unfunded commitments Asset-based lending & equipment finance $ 857 $ — $ — $ — $ (62) $ 796 Commercial and industrial 17,601 — — — (2,694) 14,907 Commercial real estate — owner occupied 208 — — — (64) 144 Commercial and business lending 18,667 — — — (2,820) 15,847 Commercial real estate — investor 936 — — — (302) 634 Real estate construction 15,586 — — — 2,415 18,001 Commercial real estate lending 16,522 — — — 2,114 18,636 Total commercial 35,189 — — — (707) 34,482 Home equity 2,592 — — — (68) 2,523 Other consumer 1,995 — — — (225) 1,770 Total consumer 4,587 — — — (293) 4,293 Total loans $ 39,776 $ — $ — $ — $ (1,000) $ 38,776 Allowance for credit losses on loans PPP $ 51 $ — $ — $ — $ (39) $ 11 0.06 % Asset-based lending & equipment finance 5,040 — — — 839 5,879 2.54 % Commercial and industrial 103,225 (1,104) 2,958 1,854 (8,179) 96,900 1.20 % Commercial real estate — owner occupied 11,681 — 3 3 (413) 11,270 1.16 % Commercial and business lending 119,997 (1,104) 2,961 1,857 (7,793) 114,061 1.22 % Commercial real estate — investor 73,739 — — — 256 73,995 1.66 % Real estate construction 53,229 — 32 32 4,497 57,758 3.28 % Commercial real estate lending 126,968 — 32 32 4,754 131,754 2.12 % Total commercial 246,965 (1,104) 2,993 1,889 (3,039) 245,814 1.58 % Residential mortgage 40,787 (43) 331 288 (3,974) 37,101 0.49 % Auto finance 1,999 (23) 26 4 4,188 6,190 1.24 % Home equity 16,603 (125) 440 315 (1,063) 15,855 2.73 % Other consumer 13,436 (733) 282 (451) (111) 12,874 4.44 % Total consumer 72,825 (924) 1,079 155 (961) 72,020 0.80 % Total loans $ 319,791 $ (2,028) $ 4,072 $ 2,044 $ (4,000) $ 317,835 1.30 %	The following table presents a summary of the changes in the ACLL by portfolio segment for the year ended December 31, 2021: ($ in Thousands) Dec 31, 2020 Charge offs Recoveries Net Charge offs Provision for credit losses Dec 31, 2021 ACLL / Loans Allowance for loan losses PPP $ 531 $ — $ — $ — $ (480) $ 51 Asset-based lending 2,077 — 412 412 1,693 4,182 Commercial and industrial (a) 140,716 (21,564) 8,152 (13,412) (41,680) 85,624 Commercial real estate — owner occupied 11,274 — 120 120 80 11,473 Commercial and business lending 154,598 (21,564) 8,684 (12,880) (40,388) 101,330 Commercial real estate — investor 93,435 (14,346) 3,162 (11,184) (9,448) 72,803 Real estate construction 59,193 (5) 126 121 (21,672) 37,643 Commercial real estate lending 152,629 (14,351) 3,288 (11,063) (31,120) 110,446 Total commercial 307,226 (35,915) 11,972 (23,943) (71,508) 211,776 Residential mortgage 42,996 (880) 841 (38) (2,170) 40,787 Auto finance 174 (22) 31 9 1,816 1,999 Home equity 18,849 (668) 2,854 2,186 (7,024) 14,011 Other consumer 14,456 (3,168) 1,267 (1,901) (1,113) 11,441 Total consumer 76,475 (4,738) 4,993 256 (8,492) 68,239 Total loans $ 383,702 $ (40,652) $ 16,965 $ (23,687) $ (80,000) $ 280,015 Allowance for unfunded commitments Asset-based lending $ 901 $ — $ — $ — $ (43) $ 857 Commercial and industrial (a) 21,411 — — — (3,809) 17,601 Commercial real estate — owner occupied 266 — — — (58) 208 Commercial and business lending 22,577 — — — (3,911) 18,667 Commercial real estate — investor 636 — — — 300 936 Real estate construction 18,887 — — — (3,301) 15,586 Commercial real estate lending 19,523 — — — (3,001) 16,522 Total commercial 42,101 — — — (6,912) 35,189 Home equity 3,118 — — — (526) 2,592 Other consumer 2,557 — — — (563) 1,995 Total consumer 5,675 — — — (1,088) 4,587 Total loans $ 47,776 $ — $ — $ — $ (8,000) $ 39,776 Allowance for credit losses on loans PPP $ 531 $ — $ — $ — $ (480) $ 51 0.08 % Asset-based lending 2,978 — 412 412 1,649 5,040 2.83 % Commercial and industrial (a) 162,126 (21,564) 8,152 (13,412) (45,490) 103,225 1.26 % Commercial real estate — owner occupied 11,539 — 120 120 22 11,681 1.20 % Commercial and business lending 177,175 (21,564) 8,684 (12,880) (44,299) 119,997 1.27 % Commercial real estate — investor 94,071 (14,346) 3,162 (11,184) (9,148) 73,739 1.68 % Real estate construction 78,080 (5) 126 121 (24,972) 53,229 2.94 % Commercial real estate lending 172,152 (14,351) 3,288 (11,063) (34,121) 126,968 2.05 % Total commercial 349,327 (35,915) 11,972 (23,943) (78,419) 246,965 1.58 % Residential mortgage 42,996 (880) 841 (38) (2,170) 40,787 0.54 % Auto finance 174 (22) 31 9 1,816 1,999 1.40 % Home equity 21,967 (668) 2,854 2,186 (7,550) 16,603 2.79 % Other consumer 17,013 (3,168) 1,267 (1,901) (1,676) 13,436 4.45 % Total consumer 82,150 (4,738) 4,993 256 (9,581) 72,825 0.85 % Total loans $ 431,478 $ (40,652) $ 16,965 $ (23,687) $ (88,000) $ 319,791 1.32 %

Goodwill and Other Intangible_2

Goodwill and Other Intangible Assets (Tables)	3 Months Ended
	Mar. 31, 2022
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) Three months ended Mar 31, 2022 Year Ended Dec 31, 2021 Core deposit intangibles Gross carrying amount at the beginning of period $ 88,109 $ 88,109 Accumulated amortization (32,219) (30,016) Net book value $ 55,890 $ 58,093 Amortization during the period $ 2,203 $ 8,811 Other intangibles Gross carrying amount at the beginning of period $ — $ 2,000 Reductions due to sale — (1,317) Accumulated amortization — (683) Net book value $ — $ — Amortization during the period $ — $ 33
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 under the fair value measurement method for the quarter ended March 31, 2022 is as follows: ($ in Thousands) Three months ended Mar 31, 2022 Mortgage servicing rights Mortgage servicing rights at beginning of period $ 54,862 Cumulative effect of accounting methodology change 2,296 Balance at beginning of period, adjusted $ 57,158 Additions 3,042 Paydowns (2,637) Valuation: Change in fair value model assumptions 2,345 Changes in fair value of asset 7,106 Mortgage servicing rights at end of period $ 67,015 Portfolio of residential mortgage loans serviced for others (“servicing portfolio”) $ 6,972,242 Mortgage servicing rights to servicing portfolio 0.96 % Prior to January 1, 2022, the Corporation accounted for its MSRs under the amortization methodology. Under this methodology the Corporation evaluated its MSRs asset for impairment at minimum on a quarterly basis. Impairment was 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 fell, prepayment speeds were usually faster and the value of the MSRs asset generally decreased, requiring additional valuation reserve. Conversely, as mortgage interest rates rose, prepayment speeds were usually slower and the value of the MSRs asset generally increased, requiring less valuation reserve. A valuation allowance was established, through a charge to earnings, to the extent the amortized cost of the MSRs exceeded the estimated fair value by stratification. An other-than-temporary impairment (i.e., recoverability was considered remote when considering interest rates and loan pay off activity) was recognized as a write-down of the MSRs asset and the related valuation allowance (to the extent a valuation allowance was available) and then against earnings. A direct write-down permanently reduced the carrying value of the MSRs asset and valuation allowance, precluding subsequent recoveries. A summary of changes in the balance of the MSRs asset and the MSRs valuation allowance under the amortization method for the year ended December 31, 2021 is as follows: ($ in Thousands) Year Ended Dec 31, 2021 Mortgage servicing rights Mortgage servicing rights at beginning of period $ 59,967 Additions 16,151 Amortization (19,436) Mortgage servicing rights at end of period $ 56,682 Valuation allowance at beginning of period $ (18,006) (Additions) recoveries, net 16,186 Valuation allowance at end of period $ (1,820) Mortgage servicing rights, net $ 54,862 Fair value of mortgage servicing rights $ 57,259 Portfolio of residential mortgage loans serviced for others (“servicing portfolio”) $ 6,994,834 Mortgage servicing rights, net to servicing portfolio 0.78 % Mortgage servicing rights expense (a) $ 3,250
Summary of estimated future amortization expense	The following table shows the estimated future amortization expense for amortizing intangible assets: ($ in Thousands) Core Deposit Intangibles Mortgage Servicing Rights Nine months ended December 31, 2022 $ 6,608 $ 8,956 2023 8,811 11,320 2024 8,811 9,663 2025 8,811 8,227 2026 8,811 6,874 2027 8,811 5,913 Beyond 2027 5,227 16,062 Total Estimated Amortization Expense $ 55,890 $ 67,015

Short and Long-Term Funding (Ta

Short and Long-Term Funding (Tables)	3 Months Ended
	Mar. 31, 2022
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) and long-term funding (funding with original contractual maturities greater than one year): ($ in Thousands) Mar 31, 2022 Dec 31, 2021 Short-Term Funding Federal funds purchased $ 100,060 $ 120 Securities sold under agreements to repurchase 268,708 319,412 Federal funds purchased and securities sold under agreements to repurchase 368,768 319,532 Commercial paper 30,593 34,730 Total short-term funding $ 399,361 $ 354,262 Long-Term Funding Corporation subordinated notes, at par, due 2025 $ 250,000 $ 250,000 Capitalized costs (765) (839) Finance leases 562 163 Total long-term funding 249,797 249,324 Total short and long-term funding, excluding FHLB advances $ 649,158 $ 603,587 FHLB Advances Short-term FHLB advances $ 320,000 $ — Long-term FHLB advances 1,217,948 1,621,047 Total FHLB advances $ 1,537,948 $ 1,621,047 Total short and long-term funding $ 2,187,106 $ 2,224,633
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 March 31, 2022 and December 31, 2021 are presented in the following table: Overnight and Continuous ($ in Thousands) March 31, 2022 December 31, 2021 Repurchase agreements Agency mortgage-related securities $ 268,708 $ 319,412

Derivative and Hedging Activi_2

Derivative and Hedging Activities (Tables)	3 Months Ended
	Mar. 31, 2022
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 March 31, 2022 and December 31, 2021. 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 March 31, 2022 and December 31, 2021. 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. Mar 31, 2022 Dec 31, 2021 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 $ 4,090,770 $ 31,728 $ 4,130,770 $ 112,029 $ 3,874,781 $ 83,626 $ 3,874,781 $ 26,231 Foreign currency exchange forwards 506,185 1,986 501,213 1,815 490,057 5,490 478,745 5,441 Commodity contracts — — — — 3,894 1,264 3,910 1,248 Mortgage banking (a)(b) 114,909 4,796 197,000 234 133,990 2,647 245,016 — Gross derivatives before netting $ 38,511 $ 114,078 $ 93,026 $ 32,921 Less: Legally enforceable master netting agreements 2,514 2,514 2,143 2,143 Less: Cash collateral pledged/received 7,816 987 1,313 11,357 Total derivative instruments, after netting $ 28,181 $ 110,577 $ 89,570 $ 19,421 (a) The notional amount of the mortgage derivative asset includes interest rate lock commitments, while the notional amount of the mortgage derivative liability includes 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 months ended March 31, 2022 and 2021: Location and Amount of Gain or (Loss) Recognized on the Consolidated Statements of Income in Three months ended Mar 31, 2022 2021 ($ in Thousands) Interest Income Total amounts of income presented on the consolidated statements of income in which the effects of the fair value hedge is recorded $ (179) $ (485) The effects of fair value hedging: (Loss) on fair value hedging relationships in Subtopic 815-20 Interest contracts Hedged items (179) (485)
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 months ended March 31, 2022 and 2021: Consolidated Statements of Income Category of Three Months Ended Mar 31, ($ in Thousands) 2022 2021 Derivative Instruments Interest rate-related instruments — customer and mirror, net Capital markets, net $ 573 $ 2,938 Interest rate-related instruments — MSRs hedge Mortgage banking, net $ (3,666) $ — Foreign currency exchange forwards Capital markets, net 123 143 Commodity contracts Capital markets, net (16) (621) Interest rate lock commitments (mortgage) Mortgage banking, net (2,842) (2,708) Forward commitments (mortgage) Mortgage banking, net (4,757) (6,300)

Balance Sheet Offsetting (Table

Balance Sheet Offsetting (Tables)	3 Months Ended
	Mar. 31, 2022
Offsetting [Abstract]
Balance sheet offsetting of derivative assets and liabilities	The following table presents the interest rate and foreign exchange assets and liabilities subject to an enforceable master netting arrangement as of March 31, 2022 and interest rate, commodity, and foreign exchange assets and liabilities subject to an enforceable master netting arrangement as of December 31, 2021. The interest and foreign exchange agreements the Corporation has with its commercial customers and the commodity agreements the Corporation had 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 ($ in Thousands) Derivative Cash Collateral Received Derivative assets March 31, 2022 $ 15,021 $ (2,514) $ (7,816) $ 4,691 December 31, 2021 3,567 (2,143) (1,313) 111 Gross Amounts Recognized Gross Amounts Subject to Master Netting Arrangements Offset on the Consolidated Balance Sheets Net Amounts Presented on the Consolidated Balance Sheets ($ in Thousands) Derivative Cash Collateral Pledged Derivative liabilities March 31, 2022 $ 3,535 $ (2,514) $ (987) $ 34 December 31, 2021 15,620 (2,143) (11,357) 2,120

Commitments, Off-Balance Shee_2

Commitments, Off-Balance Sheet Arrangements, Legal Proceedings and Regulatory Matters (Tables)	3 Months Ended
	Mar. 31, 2022
Commitments and Contingencies Disclosure [Abstract]
Summary of lending-related and other commitments	The following is a summary of lending-related commitments: ($ in Thousands) Mar 31, 2022 Dec 31, 2021 Commitments to extend credit, excluding commitments to originate residential mortgage loans held for sale (a)(b) $ 10,973,357 $ 10,848,136 Commercial letters of credit (a) 9,827 5,992 Standby letters of credit (c) 257,039 248,292 (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
Schedule Of Unfunded Commitments [Table Text Block]	The following table presents a summary of the changes in the allowance for unfunded commitments: ($ in Thousands) Three months ended Mar 31, 2022 Year Ended Dec 31, 2021 Allowance for Unfunded Commitments Balance at beginning of period $ 39,776 $ 47,776 Provision for unfunded commitments (1,000) (8,000) Balance at end of period $ 38,776 $ 39,776

Fair Value Measurements (Tables

Fair Value Measurements (Tables)	3 Months Ended
	Mar. 31, 2022
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 March 31, 2022 and December 31, 2021, aggregated by the level in the fair value hierarchy within which those measurements fall: ($ in Thousands) Fair Value Hierarchy Mar 31, 2022 Dec 31, 2021 Assets Investment securities AFS U.S. Treasury securities Level 1 $ 116,132 $ 122,957 Agency securities Level 2 14,200 14,897 Obligations of state and political subdivisions (municipal securities) Level 2 372,401 400,457 Residential mortgage-related securities FNMA / FHLMC Level 2 1,894,819 2,691,879 GNMA Level 2 58,909 67,780 Private-label Level 2 — 329,724 Commercial mortgage-related securities FNMA / FHLMC Level 2 19,786 350,623 GNMA Level 2 126,760 166,799 Asset backed securities FFELP Level 2 168,978 177,325 SBA Level 2 5,845 6,580 Other debt securities Level 2 2,973 2,994 Total investment securities AFS Level 1 $ 116,132 $ 122,957 Total investment securities AFS Level 2 2,664,671 4,209,058 Equity securities with readily determinable fair values Level 1 5,025 4,810 Residential loans held for sale Level 2 91,582 136,638 Mortgage servicing rights, net (a) Level 3 67,015 N/A Interest rate-related instruments (b) Level 2 31,728 83,626 Foreign currency exchange forwards (b) Level 2 1,986 5,490 Commodity contracts (b) Level 2 — 1,264 Interest rate lock commitments to originate residential mortgage loans held for sale Level 3 — 2,617 Forward commitments on residential mortgage loans Level 3 4,796 30 Liabilities Interest rate-related instruments (b) Level 2 $ 112,029 $ 26,231 Foreign currency exchange forwards (b) Level 2 1,815 5,441 Commodity contracts (b) Level 2 — 1,248 Interest rate lock commitments to originate residential mortgage loans held for sale Level 3 224 — Forward commitments on TBA securities Level 3 9 —
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 three months ended March 31, 2022 and the year ended December 31, 2021, 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 on residential mortgage loans and TBA securities Total Balance December 31, 2020 $ 9,624 $ 2,046 $ 7,579 New production 53,686 (3,281) 56,966 Closed loans / settlements (53,477) 3,740 (57,217) Other (7,216) (2,535) (4,680) Mortgage derivative (loss) (7,007) (2,076) (4,932) Balance December 31, 2021 $ 2,617 $ (30) $ 2,647 New production $ 5,002 $ (887) $ 5,890 Closed loans / settlements (455) 9,099 (9,554) Other (7,389) (12,969) 5,580 Mortgage derivative gain (loss) (2,842) (4,757) 1,916 Balance March 31, 2022 $ (224) $ (4,787) $ 4,563
Equity securities without readily determinable fair value	The following table presents the carrying value of equity securities without readily determinable fair values as of March 31, 2022 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 March 31, 2022: ($ in Thousands) Equity securities without readily determinable fair values Carrying value as of December 31, 2021 $ 13,542 Additions 1 Sales (8) Carrying value as of March 31, 2022 $ 13,535 Cumulative upward carrying value changes between January 1, 2018 and March 31, 2022 $ 13,444 Cumulative downward carrying value changes/impairment between January 1, 2018 and March 31, 2022 $ —
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 ($ in Thousands) Fair Value Hierarchy Fair Value Adjustment Recognized on the Consolidated Statements of Income (c) March 31, 2022 Assets Individually evaluated loans (a) Level 3 $ 43,882 Provision for credit losses $ (397) OREO (b) Level 2 985 Other noninterest expense / provision for credit losses (d) 102 December 31, 2021 Assets Individually evaluated loans (a) Level 3 $ 69,917 Provision for credit losses $ (3,045) OREO (b) Level 2 21,299 Other noninterest expense / provision for credit losses (d) 7,345 Mortgage servicing rights (e) Level 3 57,259 Mortgage banking, net 16,186
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: March 31, 2022 Valuation Technique Significant Unobservable Input Range of Inputs Weighted Average Input Applied Individually evaluated loans Appraisals / Discounted cash flow Collateral / Discount factor 21% - 21% 21%
Estimated fair values of financial instruments	Fair value estimates are set forth below for the Corporation’s financial instruments: Mar 31, 2022 Dec 31, 2021 ($ in Thousands) Fair Value Hierarchy Level Carrying Amount Fair Value Carrying Amount Fair Value Financial assets Cash and due from banks Level 1 $ 334,138 $ 334,138 $ 343,831 $ 343,831 Interest-bearing deposits in other financial institutions Level 1 166,929 166,929 681,684 681,684 Investment securities AFS Level 1 116,132 116,132 122,957 122,957 Investment securities AFS Level 2 2,664,671 2,664,671 4,209,058 4,209,058 Investment securities HTM, net Level 1 998 964 1,000 1,001 Investment securities HTM, net Level 2 3,938,857 3,763,872 2,237,947 2,347,608 Equity securities with readily determinable fair values Level 1 5,025 5,025 4,810 4,810 Equity securities without readily determinable fair values Level 3 13,535 13,535 13,542 13,542 FHLB and Federal Reserve Bank stocks Level 2 168,281 168,281 168,281 168,281 Residential loans held for sale Level 2 91,582 91,582 136,638 136,638 Loans, net Level 3 24,252,867 23,485,798 23,944,934 23,980,330 Bank and corporate owned life insurance Level 2 679,538 679,538 680,021 680,021 Mortgage servicing rights, net (a) Level 3 67,015 67,015 54,862 57,259 Derivatives (other assets) (b) Level 2 33,715 33,715 90,379 90,379 Interest rate lock commitments to originate residential mortgage loans held for sale (other assets) Level 3 — — 2,617 2,617 Forward commitments to sell residential mortgage loans (other assets) Level 3 4,796 4,796 30 30 Financial liabilities Noninterest-bearing demand, savings, interest-bearing demand, and money market accounts Level 3 $ 27,116,495 $ 27,116,495 $ 27,119,167 $ 27,119,167 Time deposits (c) Level 2 1,288,913 1,288,913 1,347,262 1,347,262 Short-term funding Level 2 399,361 399,270 354,262 354,248 FHLB advances Level 2 1,537,948 1,546,821 1,621,047 1,680,814 Other long-term funding Level 2 249,797 254,355 249,324 265,545 Standby letters of credit (d) Level 2 2,473 2,473 2,367 2,367 Derivatives (accrued expenses and other liabilities) (b) Level 2 113,844 113,844 32,921 32,921 Interest rate lock commitments to originate residential mortgage loans held for sale (accrued expenses and other liabilities) Level 3 224 224 — — Forward commitments on TBA securities (accrued expenses and other liabilities) Level 3 9 9 — — (a) MSRs at December 31, 2021 were carried at LOCOM. On January 1, 2022, the Corporation made the irrevocable election to account for MSRs at fair value.

Retirement Plans (Tables)

Retirement Plans (Tables)	3 Months Ended
	Mar. 31, 2022
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 months ended March 31, 2022 and 2021 were as follows: Three Months Ended Mar 31, ($ in Thousands) 2022 2021 Components of Net Periodic Benefit Cost RAP Service cost $ 923 $ 2,075 Interest cost 1,772 1,623 Expected return on plan assets (6,736) (6,430) Amortization of prior service cost (63) (18) Amortization of actuarial loss 74 1,050 Total net periodic pension cost $ (4,029) $ (1,701) Postretirement Plan Interest cost $ 13 $ 13 Amortization of prior service cost (19) (19) Total net periodic benefit cost $ (6) $ (6)

Segment Reporting (Tables)

Segment Reporting (Tables)	3 Months Ended
	Mar. 31, 2022
Segment Reporting [Abstract]
Selected segment information	Information about the Corporation’s segments is presented below: Corporate and Commercial Specialty Three Months Ended Mar 31, ($ in Thousands) 2022 2021 Net interest income $ 90,633 $ 89,661 Net intersegment interest income 8,525 4,670 Segment net interest income 99,158 94,331 Noninterest income (a) 37,790 41,828 Total revenue 136,948 136,160 Provision for credit losses 12,653 16,680 Noninterest expense 56,559 55,448 Income before income taxes 67,736 64,032 Income tax expense 12,313 11,891 Net income $ 55,423 $ 52,141 Allocated goodwill $ 525,836 $ 525,836 Community, Consumer, and Business Three Months Ended Mar 31, ($ in Thousands) 2022 2021 Net interest income $ 69,544 $ 71,775 Net intersegment interest income 18,833 14,889 Segment net interest income 88,377 86,664 Noninterest income 33,207 47,331 Total revenue 121,584 133,995 Provision for credit losses 4,656 5,928 Noninterest expense 98,660 100,353 Income before income taxes 18,267 27,714 Income tax expense 3,836 5,820 Net income $ 14,431 $ 21,894 Allocated goodwill $ 579,156 $ 579,156 Risk Management and Shared Services Three Months Ended Mar 31, ($ in Thousands) 2022 2021 Net interest income $ 27,570 $ 14,465 Net intersegment interest (expense) (27,358) (19,559) Segment net interest income 212 (5,094) Noninterest income 3,470 6,184 Total revenue 3,683 1,091 Provision for credit losses (21,300) (45,612) Noninterest expense 18,073 19,546 Income before income taxes 6,909 27,156 Income tax expense 2,501 6,890 Net income $ 4,409 $ 20,266 Allocated goodwill $ — $ — Consolidated Total Three Months Ended Mar 31, ($ in Thousands) 2022 2021 Net interest income $ 187,747 $ 175,902 Net intersegment interest income — — Segment net interest income 187,747 175,902 Noninterest income (a) 74,467 95,343 Total revenue 262,214 271,245 Provision for credit losses (3,990) (23,004) Noninterest expense 173,292 175,347 Income before income taxes 92,912 118,903 Income tax expense 18,650 24,602 Net income $ 74,262 $ 94,301 Allocated goodwill $ 1,104,992 $ 1,104,992

Accumulated Other Comprehensi_2

Accumulated Other Comprehensive Income (Loss) (Tables)	3 Months Ended
	Mar. 31, 2022
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 March 31, 2022 and 2021, including changes during the preceding three month periods as well as any reclassifications out of accumulated other comprehensive income (loss): ($ in Thousands) Investment Defined Benefit Accumulated Balance December 31, 2021 $ (5,266) $ (5,051) $ (10,317) Other comprehensive (loss) before reclassifications (103,284) — (103,284) Unrealized (losses) on AFS securities transferred to HTM securities (67,604) — (67,604) Amounts reclassified from accumulated other comprehensive income (loss) Investment securities (gains), net (21) — (21) Investment securities HTM, net, at amortized cost 1,108 — 1,108 Personnel expense — (81) (81) Other expense — 74 74 Income tax benefit 43,098 2 43,100 Net other comprehensive (loss) during period (126,702) (6) (126,708) Balance March 31, 2022 $ (131,968) $ (5,057) $ (137,024) Balance December 31, 2020 $ 41,325 $ (28,707) $ 12,618 Other comprehensive (loss) before reclassifications (23,979) — (23,979) Amounts reclassified from accumulated other comprehensive income (loss) Investment securities losses , net 39 — 39 Investment securities HTM, net, at amortized cost 518 — 518 Personnel expense — (37) (37) Other expense — 1,050 1,050 Income tax (expense) benefit 5,851 (253) 5,598 Net other comprehensive income (loss) during period (17,571) 760 (16,811) Balance March 31, 2021 $ 23,754 $ (27,947) $ (4,193)

Revenue from Contract with Cust

Revenue from Contract with Customer (Tables)	3 Months Ended
	Mar. 31, 2022
Revenue from Contract with Customer [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 Mar 31, ($ in Thousands) 2022 2021 Wealth management fees $ 22,404 $ 22,414 Service charges and deposit account fees 3,784 3,941 Card-based fees (a) 417 346 Other revenue 1,235 664 Noninterest income (in-scope of Topic 606) $ 27,840 $ 27,365 Noninterest income (out-of-scope of Topic 606) (b) 9,950 14,464 Total noninterest income $ 37,790 $ 41,828 Community, Consumer, and Business Three Months Ended Mar 31, ($ in Thousands) 2022 2021 Service charges and deposit account fees $ 13,069 $ 10,900 Card-based fees (a) 9,524 9,414 Other revenue 1,862 3,674 Noninterest income (in-scope of Topic 606) $ 24,455 $ 23,988 Noninterest income (out-of-scope of Topic 606) 8,751 23,342 Total noninterest income $ 33,207 $ 47,331 Risk Management and Shared Services Three Months Ended Mar 31, ($ in Thousands) 2022 2021 Service charges and deposit account fees $ 3 $ 15 Card-based fees (a) 7 4 Other revenue 38 391 Noninterest income (in-scope of Topic 606) $ 49 $ 409 Noninterest income (out-of-scope of Topic 606) 3,421 5,775 Total noninterest income $ 3,470 $ 6,184 Consolidated Total Three Months Ended Mar 31, ($ in Thousands) 2022 2021 Wealth management fees $ 22,404 $ 22,414 Service charges and deposit account fees 16,856 14,855 Card-based fees (a) 9,949 9,764 Other revenue 3,135 4,729 Noninterest income (in-scope of Topic 606) $ 52,344 $ 51,762 Noninterest income (out-of-scope of Topic 606) (b) 22,123 43,581 Total noninterest income $ 74,467 $ 95,343 (a) Certain card-based fees are out-of-scope of Topic 606.
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 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 is 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 and advisory fees (b) Brokerage and advisory 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. Payment 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 and advisory fees are included in wealth management fees.

Leases (Tables)

Leases (Tables)	3 Months Ended
	Mar. 31, 2022
Leases [Abstract]
Lease, Cost and Cash Flows	Operating and finance lease costs and cash flows resulting from these leases are presented below: Three Months Ended Mar 31, ($ in Thousands) 2022 2021 Operating lease costs $ 1,798 $ 2,240 Finance lease costs 41 39 Operating lease cash flows 2,407 2,963 Finance lease cash flows 44 40
Components of lease expense	The lease classifications on the consolidated balance sheets were as follows: ($ in Thousands) Consolidated Balance Sheets Category Mar 31, 2022 Dec 31, 2021 Operating lease right-of-use asset Premises and equipment $ 28,354 $ 28,299 Finance lease right-of-use asset Other assets 545 143 Operating lease liability Accrued expenses and other liabilities 31,585 31,345 Finance lease liability Other long-term funding 562 163
Operating lease information	The lease payment obligations, weighted-average remaining lease term, and weighted-average original discount rate were as follows: Mar 31, 2022 Dec 31, 2021 ($ 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 $ 191 1.25 0.44 % $ 192 1.50 0.45 % Retail and corporate offices 28,482 5.76 2.24 % 29,008 5.56 3.26 % Land 5,356 8.11 3.12 % 5,551 8.29 3.12 % Total operating leases $ 34,028 6.08 2.37 % $ 34,751 5.94 3.22 % Finance leases Retail and corporate offices $ 553 6.00 1.32 % $ 112 1.25 1.32 % Land 30 0.42 1.07 % 51 0.67 1.07 % Total finance leases $ 583 5.70 1.31 % $ 164 1.07 1.24 %
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 Total Leases Nine months ended December 31, 2022 $ 5,692 $ 98 $ 5,790 2023 6,252 92 6,344 2024 5,660 93 5,752 2025 4,363 93 4,456 2026 3,799 93 3,891 Beyond 2026 8,263 116 8,379 Total lease payments $ 34,028 $ 583 $ 34,611 Less: interest 2,444 21 2,465 Present value of lease payments $ 31,585 $ 562 $ 32,147

Acquisitions (Details Textuals)

Acquisitions (Details Textuals) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021	Dec. 31, 2021	Mar. 01, 2021	Feb. 26, 2021
Business Acquisition [Line Items]
Deposits	$ 28,405,409		$ 28,466,430		$ 31,000
Whitnell
Business Acquisition [Line Items]
Disposal Group, Including Discontinued Operation, Consideration				$ 8,000
Gain (Loss) on Sale and Maturity of Other Investments, Before Tax	$ 2,000	$ 2,000

Earnings Per Common Share (Deta

Earnings Per Common Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Calculations for basic and diluted earnings per common share
Net income	$ 74,262	$ 94,301
Preferred stock dividends	(2,875)	(5,207)
Net income available to common equity	71,387	89,094
Common shareholder dividends	(30,372)	(27,661)
Unvested share-based payment awards	(211)	(209)
Undistributed earnings	40,804	61,224
Undistributed earnings allocated to common shareholders	40,548	60,836
Undistributed earnings allocated to unvested share-based payment awards	256	387
Undistributed earnings	40,804	61,224
Basic
Distributed earnings to common shareholders	30,372	27,661
Undistributed earnings allocated to common shareholders	40,548	60,836
Total common shareholders earnings, basic	70,920	88,497
Diluted
Distributed earnings to common shareholders	30,372	27,661
Undistributed earnings allocated to common shareholders	40,548	60,836
Total common shareholders earnings, diluted	$ 70,920	$ 88,497
Weighted average common shares outstanding	148,781	152,355
Effect of dilutive common stock awards	1,711	1,333
Diluted weighted average common shares outstanding	150,492	153,688
Basic earnings per common share	$ 0.48	$ 0.58
Diluted earnings per common share	$ 0.47	$ 0.58

Earnings Per Common Share (De_2

Earnings Per Common Share (Details Textuals) - shares shares in Millions	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
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	2	3

Stock-Based Compensation, Stock

Stock-Based Compensation, Stock Option Activity (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2022	Dec. 31, 2021
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]
Stock Options Shares Outstanding, Beginning balance (in shares)	4,814
Exercised	(362)
Stock Options Shares Outstanding, Ending balance (in shares)	4,452	4,814
Options exercisable (in shares)	3,775
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)	$ 20.72
Exercised	17.65
Stock Option Outstanding, Weighted Average Exercise Price, Ending balance (in usd per share)	20.97	$ 20.72
Options Exercisable, Weighted Average Exercise Price (in usd per share)	$ 21.29
Stock Options Outstanding, Weighted Average Remaining Contractual Term	5 years 10 months 6 days	5 years 11 months 15 days
Options exercisable, Weighted Average Remaining Contractual Term	5 years 6 months 7 days
Stock Options Outstanding, Aggregate Intrinsic Value, Beginning balance	$ 12,532
Stock Options Outstanding, Aggregate Intrinsic Value, Ending balance	11,138	$ 12,532
Options exercisable, Aggregate Intrinsic Value	$ 8,661

Stock-Based Compensation, Restr

Stock-Based Compensation, Restricted Stock Activity (Details) shares in Thousands	3 Months Ended
	Mar. 31, 2022$ / 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	2,635
Granted | shares	650
Vested | shares	(618)
Forfeited | shares	(1)
Outstanding Shares, Ending balance (in shares) | shares	2,666
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	$ 19.87
Granted, Weighted Average Grant Date Fair Value | $ / shares	23.69
Vested, Weighted Average Grant Date Fair Value | $ / shares	23.73
Forfeited, Weighted Average Grant Date Fair Value | $ / shares	21.97
Outstanding Weighted Average Grant Date Fair Value, Ending balance (in usd per share) | $ / shares	$ 20.70

Stock-Based Compensation (Detai

Stock-Based Compensation (Details Textuals) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Share-based Compensation Arrangement by Share-based Payment Award
Intrinsic value of stock options exercised	$ 3,000	$ 3,000
Total fair value of vested stock options	$ 2,000	3,000
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	$ 241	$ 403
Recognized compensation expense for accelerated vesting	0
Unvested share-based payment awards	$ 1,000
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	$ 6,000	$ 3,000
Recognized compensation expense for accelerated vesting	3,000
Unvested share-based payment awards	$ 31,000
Remaining requisite service periods, extend through	first quarter of 2026

Investment Securities, AFS and

Investment Securities, AFS and HTM Securities Amortized Costs and Fair Values (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2022	Dec. 31, 2021
Schedule of Available-for-sale and Held-to-maturity Securities [Line Items]
Debt Securities, Available-for-sale, Amortized Cost	$ 2,890,763	$ 4,338,671
Debt Securities, Available-for-sale, Unrealized Gain	5,416	28,850
Debt Securities, Available-for-sale, Unrealized Loss	(115,376)	(35,506)
Debt Securities, Available-for-sale		4,332,015
Investment securities AFS, at fair value	2,780,803	4,332,015
Debt Securities, Held-to-Maturity, Amortized Cost, before Allowance for Credit Loss	3,939,920	2,239,003
Held-to-maturity, Gross Unrealized Gains	100,167	118,471
Held-to-maturity, Gross Unrealized Loss	(275,186)	(8,809)
Held-to-maturity, Fair Value	3,764,901	2,348,664
Fair Value, Inputs, Level 2
Schedule of Available-for-sale and Held-to-maturity Securities [Line Items]
Debt Securities, Available-for-sale	2,664,671	4,209,058
Debt Securities, Held-to-Maturity, Amortized Cost, before Allowance for Credit Loss	3,938,857	2,237,947
Held-to-maturity, Fair Value	3,763,872	2,347,608
Fair Value, Inputs, Level 2 | Fair Value, Measurements, Recurring | Other Debt securities
Schedule of Available-for-sale and Held-to-maturity Securities [Line Items]
Debt Securities, Available-for-sale	2,973	2,994
Fair Value, Inputs, Level 2 | Fair Value, Measurements, Recurring | Federal Family Education Loan Program (FFELP) Guaranteed Loans [Member]
Schedule of Available-for-sale and Held-to-maturity Securities [Line Items]
Debt Securities, Available-for-sale	168,978	177,325
Fair Value, Inputs, Level 2 | Fair Value, Measurements, Recurring | US Government-sponsored Enterprises Debt Securities [Member]
Schedule of Available-for-sale and Held-to-maturity Securities [Line Items]
Debt Securities, Available-for-sale	5,845	6,580
Fair Value, Inputs, Level 1
Schedule of Available-for-sale and Held-to-maturity Securities [Line Items]
Debt Securities, Available-for-sale	116,132	122,957
FNMA/FHLMC | Fair Value, Inputs, Level 2 | Fair Value, Measurements, Recurring | Residential Related Securities
Schedule of Available-for-sale and Held-to-maturity Securities [Line Items]
Debt Securities, Available-for-sale	1,894,819	2,691,879
FNMA/FHLMC | Fair Value, Inputs, Level 2 | Fair Value, Measurements, Recurring | Commercial mortgage-related securities
Schedule of Available-for-sale and Held-to-maturity Securities [Line Items]
Debt Securities, Available-for-sale	19,786	350,623
Government National Mortgage Association (GNMA) [Member] | Fair Value, Inputs, Level 2 | Fair Value, Measurements, Recurring | Residential Related Securities
Schedule of Available-for-sale and Held-to-maturity Securities [Line Items]
Debt Securities, Available-for-sale	58,909	67,780
Government National Mortgage Association (GNMA) [Member] | Fair Value, Inputs, Level 2 | Fair Value, Measurements, Recurring | Commercial mortgage-related securities
Schedule of Available-for-sale and Held-to-maturity Securities [Line Items]
Debt Securities, Available-for-sale	126,760	166,799
US Treasury Securities [Member]
Schedule of Available-for-sale and Held-to-maturity Securities [Line Items]
Debt Securities, Available-for-sale, Amortized Cost	124,328	124,291
Debt Securities, Available-for-sale, Unrealized Gain	0	0
Debt Securities, Available-for-sale, Unrealized Loss	(8,196)	(1,334)
Debt Securities, Held-to-Maturity, Amortized Cost, before Allowance for Credit Loss	998	1,000
Held-to-maturity, Gross Unrealized Gains	0	1
Held-to-maturity, Gross Unrealized Loss	(34)	0
Held-to-maturity, Fair Value	964	1,001
US Treasury Securities [Member] | Fair Value, Inputs, Level 2 | Fair Value, Measurements, Recurring
Schedule of Available-for-sale and Held-to-maturity Securities [Line Items]
Debt Securities, Available-for-sale		122,957
US Treasury Securities [Member] | Fair Value, Inputs, Level 1 | Fair Value, Measurements, Recurring
Schedule of Available-for-sale and Held-to-maturity Securities [Line Items]
Debt Securities, Available-for-sale	116,132	122,957
Agency Securities
Schedule of Available-for-sale and Held-to-maturity Securities [Line Items]
Debt Securities, Available-for-sale, Amortized Cost	15,000	15,000
Debt Securities, Available-for-sale, Unrealized Gain	0	0
Debt Securities, Available-for-sale, Unrealized Loss	(800)	(103)
Agency Securities | Fair Value, Inputs, Level 2 | Fair Value, Measurements, Recurring
Schedule of Available-for-sale and Held-to-maturity Securities [Line Items]
Debt Securities, Available-for-sale	14,200	14,897
US States and Political Subdivisions Debt Securities [Member]
Schedule of Available-for-sale and Held-to-maturity Securities [Line Items]
Debt Securities, Available-for-sale, Amortized Cost	368,831	381,517
Debt Securities, Available-for-sale, Unrealized Gain	3,764	18,940
Debt Securities, Available-for-sale, Unrealized Loss	(195)	0
Debt Securities, Held-to-Maturity, Amortized Cost, before Allowance for Credit Loss	1,696,536	1,628,759
Held-to-maturity, Gross Unrealized Gains	32,201	113,179
Held-to-maturity, Gross Unrealized Loss	(80,896)	(1,951)
Held-to-maturity, Fair Value	1,647,842	1,739,988
US States and Political Subdivisions Debt Securities [Member] | Fair Value, Inputs, Level 2 | Fair Value, Measurements, Recurring
Schedule of Available-for-sale and Held-to-maturity Securities [Line Items]
Debt Securities, Available-for-sale	372,401	400,457
Residential Related Securities | FNMA/FHLMC
Schedule of Available-for-sale and Held-to-maturity Securities [Line Items]
Debt Securities, Available-for-sale, Amortized Cost	1,993,893	2,709,399
Debt Securities, Available-for-sale, Unrealized Gain	937	3,729
Debt Securities, Available-for-sale, Unrealized Loss	(100,011)	(21,249)
Debt Securities, Available-for-sale	1,894,819
Debt Securities, Held-to-Maturity, Amortized Cost, before Allowance for Credit Loss	956,470	34,347
Held-to-maturity, Gross Unrealized Gains	35,739	1,792
Held-to-maturity, Gross Unrealized Loss	(72,418)	0
Held-to-maturity, Fair Value	919,790	36,139
Residential Related Securities | Government National Mortgage Association (GNMA) [Member]
Schedule of Available-for-sale and Held-to-maturity Securities [Line Items]
Debt Securities, Available-for-sale, Amortized Cost	59,470	66,189
Debt Securities, Available-for-sale, Unrealized Gain	166	1,591
Debt Securities, Available-for-sale, Unrealized Loss	(726)	0
Debt Securities, Available-for-sale	58,909
Debt Securities, Held-to-Maturity, Amortized Cost, before Allowance for Credit Loss	44,742	48,053
Held-to-maturity, Gross Unrealized Gains	116	1,578
Held-to-maturity, Gross Unrealized Loss	(643)	0
Held-to-maturity, Fair Value	44,215	49,631
Mortgage-backed Securities, Issued by Private Enterprises [Member]
Schedule of Available-for-sale and Held-to-maturity Securities [Line Items]
Debt Securities, Available-for-sale, Amortized Cost	0	332,028
Debt Securities, Available-for-sale, Unrealized Gain		31
Debt Securities, Available-for-sale, Unrealized Loss		(2,335)
Debt Securities, Available-for-sale	0	329,724
Debt Securities, Held-to-Maturity, Amortized Cost, before Allowance for Credit Loss	384,016
Held-to-maturity, Gross Unrealized Gains	13,460
Held-to-maturity, Gross Unrealized Loss	(28,955)
Held-to-maturity, Fair Value	368,521
Mortgage-backed Securities, Issued by Private Enterprises [Member] | Residential Related Securities
Schedule of Available-for-sale and Held-to-maturity Securities [Line Items]
Debt Securities, Held-to-Maturity, Amortized Cost, before Allowance for Credit Loss	384,016
Mortgage-backed Securities, Issued by Private Enterprises [Member] | Fair Value, Inputs, Level 2 | Fair Value, Measurements, Recurring
Schedule of Available-for-sale and Held-to-maturity Securities [Line Items]
Debt Securities, Available-for-sale	0	329,724
Commercial mortgage-related securities | FNMA/FHLMC
Schedule of Available-for-sale and Held-to-maturity Securities [Line Items]
Debt Securities, Available-for-sale, Amortized Cost	19,290	357,240
Debt Securities, Available-for-sale, Unrealized Gain	496	2,686
Debt Securities, Available-for-sale, Unrealized Loss	0	(9,302)
Debt Securities, Available-for-sale	19,786
Debt Securities, Held-to-Maturity, Amortized Cost, before Allowance for Credit Loss	764,775	425,937
Held-to-maturity, Gross Unrealized Gains	17,620	122
Held-to-maturity, Gross Unrealized Loss	(88,784)	(6,659)
Held-to-maturity, Fair Value	693,610	419,400
Commercial mortgage-related securities | Government National Mortgage Association (GNMA) [Member]
Schedule of Available-for-sale and Held-to-maturity Securities [Line Items]
Debt Securities, Available-for-sale, Amortized Cost	128,019	165,439
Debt Securities, Available-for-sale, Unrealized Gain	18	1,360
Debt Securities, Available-for-sale, Unrealized Loss	(1,278)	0
Debt Securities, Available-for-sale	126,760
Debt Securities, Held-to-Maturity, Amortized Cost, before Allowance for Credit Loss	92,383	100,907
Held-to-maturity, Gross Unrealized Gains	1,032	1,799
Held-to-maturity, Gross Unrealized Loss	(3,456)	(200)
Held-to-maturity, Fair Value	89,959	102,506
Federal Family Education Loan Program (FFELP) Guaranteed Loans [Member]
Schedule of Available-for-sale and Held-to-maturity Securities [Line Items]
Debt Securities, Available-for-sale, Amortized Cost	173,068	177,974
Debt Securities, Available-for-sale, Unrealized Gain	0	475
Debt Securities, Available-for-sale, Unrealized Loss	(4,090)	(1,123)
Debt Securities, Available-for-sale	168,978
Debt Securities, Held-to-Maturity, Amortized Cost, before Allowance for Credit Loss	0
Held-to-maturity, Fair Value	0
US Government-sponsored Enterprises Debt Securities [Member]
Schedule of Available-for-sale and Held-to-maturity Securities [Line Items]
Debt Securities, Available-for-sale, Amortized Cost	5,865	6,594
Debt Securities, Available-for-sale, Unrealized Gain	33	39
Debt Securities, Available-for-sale, Unrealized Loss	(53)	(54)
Debt Securities, Available-for-sale	5,845
Debt Securities, Held-to-Maturity, Amortized Cost, before Allowance for Credit Loss	0
Held-to-maturity, Fair Value	0
Other Debt securities
Schedule of Available-for-sale and Held-to-maturity Securities [Line Items]
Debt Securities, Available-for-sale, Amortized Cost	3,000	3,000
Debt Securities, Available-for-sale, Unrealized Gain	0	0
Debt Securities, Available-for-sale, Unrealized Loss	$ (27)	$ (6)

Investment Securities, AFS an_2

Investment Securities, AFS and HTM Contractual Maturities (Details) - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
Amortized Cost
Available for Sale, Due in one year or less	$ 5,167
Available for Sale, Due after one year through five years	89,914
Available for Sale, Due after five years through ten years	378,692
Available for Sale, Due after ten years	37,386
Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, Fair Value	505,706
Debt Securities, Available-for-sale, Maturity, without Single Maturity Date, Amortized Cost	511,159
Available for Sale, Total debt securities	2,890,763	$ 4,338,671
Available for Sale, amortized cost	2,890,763	4,338,671
Fair Value
Available for Sale, Due in one year or less	5,171
Available for Sale, Due after one year through five years	87,185
Available for Sale, Due after five years through ten years	374,733
Available for Sale, Due after ten years	$ 38,617
Available for Sale, Total debt securities		4,332,015
Available for Sale, Ratio of Fair Value to Amortized Cost	96.20%
Investment securities AFS, at fair value	$ 2,780,803	4,332,015
Amortized Cost
Held to Maturity, Due in one year or less	18,432
Held to Maturity, Due after one year through five years	34,156
Held to Maturity, Due after five years through ten years	163,456
Held to Maturity, Due after ten years	1,481,489
Held to Maturity, Total Debt Securities	1,697,534
Held to Maturity, Amortized Cost	3,939,920	2,239,003
Fair Value
Held to Maturity, Due in one year or less	18,503
Held to Maturity, Due after one year through five years	34,343
Held to Maturity, Due after five years through ten years	164,057
Held to Maturity, Due after ten years	1,431,903
Held to Maturity, Securities, Debt Securities	1,648,806
Held to Maturity, Total debt securities at fair value	$ 3,764,901	2,348,664
Held to Maturity, Ratio of Fair Value to Amortized Cost	95.60%
Residential Related Securities | FNMA/FHLMC
Amortized Cost
Available for Sale, Total debt securities	$ 1,993,893	2,709,399
Available for Sale, amortized cost	1,993,893	2,709,399
Fair Value
Available for Sale, Total debt securities	1,894,819
Amortized Cost
Held to Maturity, Amortized Cost	956,470	34,347
Fair Value
Held to Maturity, Total debt securities at fair value	919,790	36,139
Residential Related Securities | Government National Mortgage Association (GNMA) [Member]
Amortized Cost
Available for Sale, Total debt securities	59,470	66,189
Available for Sale, amortized cost	59,470	66,189
Fair Value
Available for Sale, Total debt securities	58,909
Amortized Cost
Held to Maturity, Amortized Cost	44,742	48,053
Fair Value
Held to Maturity, Total debt securities at fair value	44,215	49,631
Commercial mortgage-related securities | FNMA/FHLMC
Amortized Cost
Available for Sale, Total debt securities	19,290	357,240
Available for Sale, amortized cost	19,290	357,240
Fair Value
Available for Sale, Total debt securities	19,786
Amortized Cost
Held to Maturity, Amortized Cost	764,775	425,937
Fair Value
Held to Maturity, Total debt securities at fair value	693,610	419,400
Commercial mortgage-related securities | Government National Mortgage Association (GNMA) [Member]
Amortized Cost
Available for Sale, Total debt securities	128,019	165,439
Available for Sale, amortized cost	128,019	165,439
Fair Value
Available for Sale, Total debt securities	126,760
Amortized Cost
Held to Maturity, Amortized Cost	92,383	100,907
Fair Value
Held to Maturity, Total debt securities at fair value	89,959	102,506
Federal Family Education Loan Program (FFELP) Guaranteed Loans [Member]
Amortized Cost
Available for Sale, Total debt securities	173,068	177,974
Available for Sale, amortized cost	173,068	177,974
Fair Value
Available for Sale, Total debt securities	168,978
Amortized Cost
Held to Maturity, Amortized Cost	0
Fair Value
Held to Maturity, Total debt securities at fair value	0
US Government-sponsored Enterprises Debt Securities [Member]
Amortized Cost
Available for Sale, Total debt securities	5,865	6,594
Available for Sale, amortized cost	5,865	6,594
Fair Value
Available for Sale, Total debt securities	5,845
Amortized Cost
Held to Maturity, Amortized Cost	0
Fair Value
Held to Maturity, Total debt securities at fair value	0
Mortgage-backed Securities, Issued by Private Enterprises [Member]
Amortized Cost
Available for Sale, Total debt securities	0	332,028
Available for Sale, amortized cost	0	332,028
Fair Value
Available for Sale, Total debt securities	0	$ 329,724
Amortized Cost
Held to Maturity, Amortized Cost	384,016
Fair Value
Held to Maturity, Total debt securities at fair value	$ 368,521

Investment Securities, HTM Cred

Investment Securities, HTM Credit Quality Indicators (Details) - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
Schedule of Held-to-maturity Securities [Line Items]
Debt Securities, Held-to-Maturity, Amortized Cost, before Allowance for Credit Loss	$ 3,939,920	$ 2,239,003
Not Rated [Domain]
Schedule of Held-to-maturity Securities [Line Items]
Debt Securities, Held-to-Maturity, Amortized Cost, before Allowance for Credit Loss	895	896
US Treasury Securities
Schedule of Held-to-maturity Securities [Line Items]
Debt Securities, Held-to-Maturity, Amortized Cost, before Allowance for Credit Loss	998	1,000
US Treasury Securities | Not Rated [Domain]
Schedule of Held-to-maturity Securities [Line Items]
Debt Securities, Held-to-Maturity, Amortized Cost, before Allowance for Credit Loss	0	0
US States and Political Subdivisions Debt Securities [Member]
Schedule of Held-to-maturity Securities [Line Items]
Debt Securities, Held-to-Maturity, Amortized Cost, before Allowance for Credit Loss	1,696,536	1,628,759
US States and Political Subdivisions Debt Securities [Member] | Not Rated [Domain]
Schedule of Held-to-maturity Securities [Line Items]
Debt Securities, Held-to-Maturity, Amortized Cost, before Allowance for Credit Loss	895	896
FNMA/FHLMC | Residential Related Securities
Schedule of Held-to-maturity Securities [Line Items]
Debt Securities, Held-to-Maturity, Amortized Cost, before Allowance for Credit Loss	956,470	34,347
FNMA/FHLMC | Commercial mortgage-related securities
Schedule of Held-to-maturity Securities [Line Items]
Debt Securities, Held-to-Maturity, Amortized Cost, before Allowance for Credit Loss	764,775	425,937
FNMA/FHLMC | Not Rated [Domain] | Residential Related Securities
Schedule of Held-to-maturity Securities [Line Items]
Debt Securities, Held-to-Maturity, Amortized Cost, before Allowance for Credit Loss	0	0
FNMA/FHLMC | Not Rated [Domain] | Commercial mortgage-related securities
Schedule of Held-to-maturity Securities [Line Items]
Debt Securities, Held-to-Maturity, Amortized Cost, before Allowance for Credit Loss	0	0
Government National Mortgage Association (GNMA) [Member] | Residential Related Securities
Schedule of Held-to-maturity Securities [Line Items]
Debt Securities, Held-to-Maturity, Amortized Cost, before Allowance for Credit Loss	44,742	48,053
Government National Mortgage Association (GNMA) [Member] | Commercial mortgage-related securities
Schedule of Held-to-maturity Securities [Line Items]
Debt Securities, Held-to-Maturity, Amortized Cost, before Allowance for Credit Loss	92,383	100,907
Government National Mortgage Association (GNMA) [Member] | Not Rated [Domain] | Residential Related Securities
Schedule of Held-to-maturity Securities [Line Items]
Debt Securities, Held-to-Maturity, Amortized Cost, before Allowance for Credit Loss	0	0
Government National Mortgage Association (GNMA) [Member] | Not Rated [Domain] | Commercial mortgage-related securities
Schedule of Held-to-maturity Securities [Line Items]
Debt Securities, Held-to-Maturity, Amortized Cost, before Allowance for Credit Loss	0	0
Mortgage-backed Securities, Issued by Private Enterprises [Member]
Schedule of Held-to-maturity Securities [Line Items]
Debt Securities, Held-to-Maturity, Amortized Cost, before Allowance for Credit Loss	384,016
Mortgage-backed Securities, Issued by Private Enterprises [Member] | Residential Related Securities
Schedule of Held-to-maturity Securities [Line Items]
Debt Securities, Held-to-Maturity, Amortized Cost, before Allowance for Credit Loss	384,016
Mortgage-backed Securities, Issued by Private Enterprises [Member] | Not Rated [Domain] | Residential Related Securities
Schedule of Held-to-maturity Securities [Line Items]
Debt Securities, Held-to-Maturity, Amortized Cost, before Allowance for Credit Loss	0
AAA
Schedule of Held-to-maturity Securities [Line Items]
Debt Securities, Held-to-Maturity, Amortized Cost, before Allowance for Credit Loss	3,005,450	1,312,642
AAA | US Treasury Securities
Schedule of Held-to-maturity Securities [Line Items]
Debt Securities, Held-to-Maturity, Amortized Cost, before Allowance for Credit Loss	998	1,000
AAA | US States and Political Subdivisions Debt Securities [Member]
Schedule of Held-to-maturity Securities [Line Items]
Debt Securities, Held-to-Maturity, Amortized Cost, before Allowance for Credit Loss	762,066	702,399
AAA | FNMA/FHLMC | Residential Related Securities
Schedule of Held-to-maturity Securities [Line Items]
Debt Securities, Held-to-Maturity, Amortized Cost, before Allowance for Credit Loss	956,470	34,347
AAA | FNMA/FHLMC | Commercial mortgage-related securities
Schedule of Held-to-maturity Securities [Line Items]
Debt Securities, Held-to-Maturity, Amortized Cost, before Allowance for Credit Loss	764,775	425,937
AAA | Government National Mortgage Association (GNMA) [Member] | Residential Related Securities
Schedule of Held-to-maturity Securities [Line Items]
Debt Securities, Held-to-Maturity, Amortized Cost, before Allowance for Credit Loss	44,742	48,053
AAA | Government National Mortgage Association (GNMA) [Member] | Commercial mortgage-related securities
Schedule of Held-to-maturity Securities [Line Items]
Debt Securities, Held-to-Maturity, Amortized Cost, before Allowance for Credit Loss	92,383	100,907
AAA | Mortgage-backed Securities, Issued by Private Enterprises [Member] | Residential Related Securities
Schedule of Held-to-maturity Securities [Line Items]
Debt Securities, Held-to-Maturity, Amortized Cost, before Allowance for Credit Loss	384,016
AA
Schedule of Held-to-maturity Securities [Line Items]
Debt Securities, Held-to-Maturity, Amortized Cost, before Allowance for Credit Loss	920,883	914,591
AA | US Treasury Securities
Schedule of Held-to-maturity Securities [Line Items]
Debt Securities, Held-to-Maturity, Amortized Cost, before Allowance for Credit Loss	0	0
AA | US States and Political Subdivisions Debt Securities [Member]
Schedule of Held-to-maturity Securities [Line Items]
Debt Securities, Held-to-Maturity, Amortized Cost, before Allowance for Credit Loss	920,883	914,591
AA | FNMA/FHLMC | Residential Related Securities
Schedule of Held-to-maturity Securities [Line Items]
Debt Securities, Held-to-Maturity, Amortized Cost, before Allowance for Credit Loss	0	0
AA | FNMA/FHLMC | Commercial mortgage-related securities
Schedule of Held-to-maturity Securities [Line Items]
Debt Securities, Held-to-Maturity, Amortized Cost, before Allowance for Credit Loss	0	0
AA | Government National Mortgage Association (GNMA) [Member] | Residential Related Securities
Schedule of Held-to-maturity Securities [Line Items]
Debt Securities, Held-to-Maturity, Amortized Cost, before Allowance for Credit Loss	0	0
AA | Government National Mortgage Association (GNMA) [Member] | Commercial mortgage-related securities
Schedule of Held-to-maturity Securities [Line Items]
Debt Securities, Held-to-Maturity, Amortized Cost, before Allowance for Credit Loss	0	0
AA | Mortgage-backed Securities, Issued by Private Enterprises [Member] | Residential Related Securities
Schedule of Held-to-maturity Securities [Line Items]
Debt Securities, Held-to-Maturity, Amortized Cost, before Allowance for Credit Loss	0
A
Schedule of Held-to-maturity Securities [Line Items]
Debt Securities, Held-to-Maturity, Amortized Cost, before Allowance for Credit Loss	12,692	10,873
A | US Treasury Securities
Schedule of Held-to-maturity Securities [Line Items]
Debt Securities, Held-to-Maturity, Amortized Cost, before Allowance for Credit Loss	0	0
A | US States and Political Subdivisions Debt Securities [Member]
Schedule of Held-to-maturity Securities [Line Items]
Debt Securities, Held-to-Maturity, Amortized Cost, before Allowance for Credit Loss	12,692	10,873
A | FNMA/FHLMC | Residential Related Securities
Schedule of Held-to-maturity Securities [Line Items]
Debt Securities, Held-to-Maturity, Amortized Cost, before Allowance for Credit Loss	0	0
A | FNMA/FHLMC | Commercial mortgage-related securities
Schedule of Held-to-maturity Securities [Line Items]
Debt Securities, Held-to-Maturity, Amortized Cost, before Allowance for Credit Loss	0	0
A | Government National Mortgage Association (GNMA) [Member] | Residential Related Securities
Schedule of Held-to-maturity Securities [Line Items]
Debt Securities, Held-to-Maturity, Amortized Cost, before Allowance for Credit Loss	0	0
A | Government National Mortgage Association (GNMA) [Member] | Commercial mortgage-related securities
Schedule of Held-to-maturity Securities [Line Items]
Debt Securities, Held-to-Maturity, Amortized Cost, before Allowance for Credit Loss	0	$ 0
A | Mortgage-backed Securities, Issued by Private Enterprises [Member] | Residential Related Securities
Schedule of Held-to-maturity Securities [Line Items]
Debt Securities, Held-to-Maturity, Amortized Cost, before Allowance for Credit Loss	$ 0

Investment Securities Gain_Loss

Investment Securities Gain/Loss Sale of Securities (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Investments, Debt and Equity Securities [Abstract]
Gross gains on AFS securities	$ 21	$ 36
Gross (losses) on AFS securities	0	(75)
Investment securities gains (losses), net	21	(39)
Proceeds from sales of investment securities AFS	$ 734	$ 51,295

Investment Securities, AFS an_3

Investment Securities, AFS and HTM Securities Gross Unrealized Losses (Details) $ in Thousands	Mar. 31, 2022USD ($)security	Dec. 31, 2021USD ($)security
Schedule of Available-for-sale and Held-to-maturity Securities [Line Items]
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Number of Positions | security	207	120
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	$ (93,177)	$ (34,586)
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months	$ 2,044,781	$ 2,955,152
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Number of Positions | security	26	17
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	$ (22,199)	$ (920)
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer	305,713	66,478
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss	(115,376)	(35,506)
Debt Securities, Available-for-sale, Unrealized Loss Position	2,350,494	3,021,630
Investment securities HTM
Unrealized losses on held to maturity securities, less than 12 months	(264,255)	(8,422)
Unrealized losses on held to maturity securities, 12 months or more	(10,930)	(387)
Total unrealized losses on held to maturity securities	$ (275,186)	$ (8,809)
Held-to-maturity, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions, 12 Months or Longer | security	12	1
Fair value of unrealized losses on held to maturity securities, less than 12 months	$ 2,586,375	$ 533,577
Fair value of unrealized losses on held to maturity securities, 12 months or more	77,887	10,775
Total fair value of unrealized losses on held to maturity securities	$ 2,664,262	$ 544,352
Held-to-maturity, Securities In Unrealized Loss Positions Qualitative Disclosure Number Of Positions, less than 12 Months | security	510	72
US Treasury Securities
Schedule of Available-for-sale and Held-to-maturity Securities [Line Items]
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Number of Positions | security	5	7
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	$ (7,346)	$ (1,334)
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months	$ 107,050	$ 122,957
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Number of Positions | security	2	0
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	$ (850)	$ 0
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer	9,082	0
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss	(8,196)	(1,334)
Debt Securities, Available-for-sale, Unrealized Loss Position	116,132	$ 122,957
Investment securities HTM
Unrealized losses on held to maturity securities, less than 12 months	(34)
Unrealized losses on held to maturity securities, 12 months or more	0
Total unrealized losses on held to maturity securities	(34)
Fair value of unrealized losses on held to maturity securities, less than 12 months	964
Fair value of unrealized losses on held to maturity securities, 12 months or more	0
Total fair value of unrealized losses on held to maturity securities	$ 964
US Treasury Securities | Held to maturity, number of securities, less than 12 months
Investment securities HTM
Number of held to maturity securities in a continuous unrealized loss position | security	1
US Treasury Securities | Held to maturity, number of securities, 12 months or more
Investment securities HTM
Number of held to maturity securities in a continuous unrealized loss position | security	0
Agency Securities
Schedule of Available-for-sale and Held-to-maturity Securities [Line Items]
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Number of Positions | security	1	1
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	$ (800)	$ (103)
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months	$ 14,200	$ 14,897
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Number of Positions | security	0	0
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	$ 0	$ 0
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer	0	0
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss	(800)	(103)
Debt Securities, Available-for-sale, Unrealized Loss Position	$ 14,200	14,897
US States and Political Subdivisions Debt Securities [Member]
Schedule of Available-for-sale and Held-to-maturity Securities [Line Items]
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Number of Positions | security	64
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	$ (195)
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months	$ 35,501
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Number of Positions | security	0
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	$ 0
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer	0
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss	(195)
Debt Securities, Available-for-sale, Unrealized Loss Position	35,501
Investment securities HTM
Unrealized losses on held to maturity securities, less than 12 months	(79,571)	(1,951)
Unrealized losses on held to maturity securities, 12 months or more	(1,325)	0
Total unrealized losses on held to maturity securities	(80,896)	(1,951)
Fair value of unrealized losses on held to maturity securities, less than 12 months	576,351	112,038
Fair value of unrealized losses on held to maturity securities, 12 months or more	5,100	0
Total fair value of unrealized losses on held to maturity securities	$ 581,451	$ 112,038
US States and Political Subdivisions Debt Securities [Member] | Held to maturity, number of securities, less than 12 months
Investment securities HTM
Number of held to maturity securities in a continuous unrealized loss position | security	346	49
US States and Political Subdivisions Debt Securities [Member] | Held to maturity, number of securities, 12 months or more
Investment securities HTM
Number of held to maturity securities in a continuous unrealized loss position | security	5	0
Residential Related Securities | GNMA [Member]
Investment securities HTM
Unrealized losses on held to maturity securities, less than 12 months	$ (643)
Unrealized losses on held to maturity securities, 12 months or more	0
Total unrealized losses on held to maturity securities	(643)
Fair value of unrealized losses on held to maturity securities, less than 12 months	33,468
Fair value of unrealized losses on held to maturity securities, 12 months or more	0
Total fair value of unrealized losses on held to maturity securities	33,468
Residential Related Securities | FNMA/FHLMC
Investment securities HTM
Unrealized losses on held to maturity securities, less than 12 months	(72,418)
Unrealized losses on held to maturity securities, 12 months or more	0
Total unrealized losses on held to maturity securities	(72,418)
Fair value of unrealized losses on held to maturity securities, less than 12 months	896,284
Fair value of unrealized losses on held to maturity securities, 12 months or more	0
Total fair value of unrealized losses on held to maturity securities	$ 896,284
Residential Related Securities | Held to maturity, number of securities, less than 12 months | GNMA [Member]
Investment securities HTM
Number of held to maturity securities in a continuous unrealized loss position | security	46
Residential Related Securities | Held to maturity, number of securities, less than 12 months | FNMA/FHLMC
Investment securities HTM
Number of held to maturity securities in a continuous unrealized loss position | security	51
Residential Related Securities | Held to maturity, number of securities, 12 months or more | GNMA [Member]
Investment securities HTM
Number of held to maturity securities in a continuous unrealized loss position | security	0
Residential Related Securities | Held to maturity, number of securities, 12 months or more | FNMA/FHLMC
Investment securities HTM
Number of held to maturity securities in a continuous unrealized loss position | security	0
Commercial mortgage-related securities | GNMA [Member]
Investment securities HTM
Unrealized losses on held to maturity securities, less than 12 months		$ (200)
Unrealized losses on held to maturity securities, 12 months or more		0
Total unrealized losses on held to maturity securities		(200)
Fair value of unrealized losses on held to maturity securities, less than 12 months		33,468
Fair value of unrealized losses on held to maturity securities, 12 months or more		0
Total fair value of unrealized losses on held to maturity securities		33,468
Commercial mortgage-related securities | FNMA/FHLMC
Investment securities HTM
Unrealized losses on held to maturity securities, less than 12 months		(6,272)
Unrealized losses on held to maturity securities, 12 months or more		(387)
Total unrealized losses on held to maturity securities		(6,659)
Fair value of unrealized losses on held to maturity securities, less than 12 months		388,072
Fair value of unrealized losses on held to maturity securities, 12 months or more		10,775
Total fair value of unrealized losses on held to maturity securities		$ 398,847
Commercial mortgage-related securities | Held to maturity, number of securities, less than 12 months | GNMA [Member]
Investment securities HTM
Number of held to maturity securities in a continuous unrealized loss position | security		5
Commercial mortgage-related securities | Held to maturity, number of securities, less than 12 months | FNMA/FHLMC
Investment securities HTM
Number of held to maturity securities in a continuous unrealized loss position | security		18
Commercial mortgage-related securities | Held to maturity, number of securities, 12 months or more | GNMA [Member]
Investment securities HTM
Number of held to maturity securities in a continuous unrealized loss position | security		0
Commercial mortgage-related securities | Held to maturity, number of securities, 12 months or more | FNMA/FHLMC
Investment securities HTM
Number of held to maturity securities in a continuous unrealized loss position | security		1
Federal Family Education Loan Program (FFELP) Guaranteed Loans [Member]
Schedule of Available-for-sale and Held-to-maturity Securities [Line Items]
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Number of Positions | security	7	4
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	$ (1,955)	$ (256)
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months	$ 110,489	$ 64,282
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Number of Positions | security	8	8
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	$ (2,135)	$ (867)
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer	58,489	62,576
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss	(4,090)	(1,123)
Debt Securities, Available-for-sale, Unrealized Loss Position	$ 168,978	$ 126,858
US Government-sponsored Enterprises Debt Securities [Member]
Schedule of Available-for-sale and Held-to-maturity Securities [Line Items]
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Number of Positions | security	0	0
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	$ 0	$ 0
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months	$ 0	$ 0
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Number of Positions | security	8	9
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	$ (53)	$ (54)
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer	2,763	3,902
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss	(53)	(54)
Debt Securities, Available-for-sale, Unrealized Loss Position	$ 2,763	$ 3,902
Other Debt securities
Schedule of Available-for-sale and Held-to-maturity Securities [Line Items]
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Number of Positions | security	2	3
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	$ (27)	$ (6)
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months	$ 1,973	$ 2,994
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Number of Positions | security	0	0
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	$ 0	$ 0
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer	0	0
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss	(27)	(6)
Debt Securities, Available-for-sale, Unrealized Loss Position	1,973	$ 2,994
Mortgage-backed Securities, Issued by Private Enterprises [Member]
Schedule of Available-for-sale and Held-to-maturity Securities [Line Items]
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Number of Positions | security		12
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss		$ (2,335)
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months		$ 248,617
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Number of Positions | security		0
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss		$ 0
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer		0
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss		(2,335)
Debt Securities, Available-for-sale, Unrealized Loss Position		$ 248,617
Investment securities HTM
Unrealized losses on held to maturity securities, less than 12 months	(28,955)
Unrealized losses on held to maturity securities, 12 months or more	0
Total unrealized losses on held to maturity securities	(28,955)
Fair value of unrealized losses on held to maturity securities, less than 12 months	368,521
Fair value of unrealized losses on held to maturity securities, 12 months or more	0
Total fair value of unrealized losses on held to maturity securities	$ 368,521
Mortgage-backed Securities, Issued by Private Enterprises [Member] | Held to maturity, number of securities, less than 12 months
Investment securities HTM
Number of held to maturity securities in a continuous unrealized loss position | security	18
Mortgage-backed Securities, Issued by Private Enterprises [Member] | Held to maturity, number of securities, 12 months or more
Investment securities HTM
Number of held to maturity securities in a continuous unrealized loss position | security	0
FNMA/FHLMC | Residential Related Securities
Schedule of Available-for-sale and Held-to-maturity Securities [Line Items]
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Number of Positions | security	88	74
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	$ (80,850)	$ (21,249)
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months	$ 1,617,123	$ 2,172,837
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Number of Positions | security	8	0
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	$ (19,161)	$ 0
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer	235,380	0
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss	(100,011)	(21,249)
Debt Securities, Available-for-sale, Unrealized Loss Position	1,852,503	$ 2,172,837
FNMA/FHLMC | Commercial mortgage-related securities
Schedule of Available-for-sale and Held-to-maturity Securities [Line Items]
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Number of Positions | security		19
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss		$ (9,302)
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months		$ 328,568
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Number of Positions | security		0
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss		$ 0
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer		0
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss		(9,302)
Debt Securities, Available-for-sale, Unrealized Loss Position		$ 328,568
Investment securities HTM
Unrealized losses on held to maturity securities, less than 12 months	(79,178)
Unrealized losses on held to maturity securities, 12 months or more	(9,606)
Total unrealized losses on held to maturity securities	(88,784)
Fair value of unrealized losses on held to maturity securities, less than 12 months	342,543
Fair value of unrealized losses on held to maturity securities, 12 months or more	72,787
Total fair value of unrealized losses on held to maturity securities	$ 415,331
FNMA/FHLMC | Commercial mortgage-related securities | Held to maturity, number of securities, less than 12 months
Investment securities HTM
Number of held to maturity securities in a continuous unrealized loss position | security	15
FNMA/FHLMC | Commercial mortgage-related securities | Held to maturity, number of securities, 12 months or more
Investment securities HTM
Number of held to maturity securities in a continuous unrealized loss position | security	7
Government National Mortgage Association (GNMA) [Member] | Residential Related Securities
Schedule of Available-for-sale and Held-to-maturity Securities [Line Items]
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Number of Positions | security	9
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	$ (726)
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months	$ 44,614
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Number of Positions | security	0
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	$ 0
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer	0
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss	(726)
Debt Securities, Available-for-sale, Unrealized Loss Position	$ 44,614
Government National Mortgage Association (GNMA) [Member] | Commercial mortgage-related securities
Schedule of Available-for-sale and Held-to-maturity Securities [Line Items]
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Number of Positions | security	31
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	$ (1,278)
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months	$ 113,831
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Number of Positions | security	0
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	$ 0
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer	0
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss	(1,278)
Debt Securities, Available-for-sale, Unrealized Loss Position	113,831
Investment securities HTM
Unrealized losses on held to maturity securities, less than 12 months	(3,456)
Unrealized losses on held to maturity securities, 12 months or more	0
Total unrealized losses on held to maturity securities	(3,456)
Fair value of unrealized losses on held to maturity securities, less than 12 months	368,244
Fair value of unrealized losses on held to maturity securities, 12 months or more	0
Total fair value of unrealized losses on held to maturity securities	$ 368,244
Government National Mortgage Association (GNMA) [Member] | Commercial mortgage-related securities | Held to maturity, number of securities, less than 12 months
Investment securities HTM
Number of held to maturity securities in a continuous unrealized loss position | security	33
Government National Mortgage Association (GNMA) [Member] | Commercial mortgage-related securities | Held to maturity, number of securities, 12 months or more
Investment securities HTM
Number of held to maturity securities in a continuous unrealized loss position | security	0

Investment Securities (Details

Investment Securities (Details Textual) - USD ($)	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021	Dec. 31, 2021
Investment Securities Information [Line Items]
Transfer of AFS securities to HTM securities, Fair Value	$ 1,621,990,000	$ 0
Proceeds from sales of investment securities AFS	734,000	51,295,000
Pledged Financial Instruments, Not Separately Reported, Securities	2,200,000,000		$ 2,300,000,000
Interest receivable	83,120,000		80,528,000
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	(65,000)		(55,000)
Federal Home Loan Bank Stock	82,000,000		82,000,000
Federal Reserve Bank Stock	87,000,000		87,000,000
Equity securities with readily determinable fair values, Fair Value	$ 5,000,000		5,000,000
Visa Restricted Stock Owned. Total	78,000
Equity securities	$ 14,000,000		14,000,000
US Treasury Securities
Investment Securities Information [Line Items]
Held to maturity allowance for credit loss	0
US States and Political Subdivisions Debt Securities [Member]
Investment Securities Information [Line Items]
Held to maturity allowance for credit loss	0
Agency mortgage-related securities
Investment Securities Information [Line Items]
Held to maturity allowance for credit loss	0
Held-to-maturity Securities [Member]
Investment Securities Information [Line Items]
Interest receivable	16,000,000		15,000,000
Available-for-sale Securities [Member]
Investment Securities Information [Line Items]
Interest receivable	8,000,000		9,000,000
Federal Home Loan Bank Certificates and Obligations (FHLB) [Member]
Investment Securities Information [Line Items]
Interest receivable	962,000		975,000
Federal Reserve Bank Stock [Member]
Investment Securities Information [Line Items]
Interest receivable	$ 520,000		$ 0

Loans Composition (Details)

Loans Composition (Details) - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
Loans and Leases Receivable Disclosure [Line Items]
Loans	$ 24,531,926	$ 24,224,949
Interest receivable	83,120	80,528
Loans and Finance Receivables [Member]
Loans and Leases Receivable Disclosure [Line Items]
Interest receivable	58,000	55,000
PPP
Loans and Leases Receivable Disclosure [Line Items]
Loans	17,995	66,070
Asset-Based Lending
Loans and Leases Receivable Disclosure [Line Items]
Loans	231,040	178,027
Commercial and industrial
Loans and Leases Receivable Disclosure [Line Items]
Loans	8,102,380	8,208,289
Commercial real estate — owner occupied
Loans and Leases Receivable Disclosure [Line Items]
Loans	973,572	971,326
Commercial and business lending
Loans and Leases Receivable Disclosure [Line Items]
Loans	9,324,986	9,423,711
Commercial real estate — investor
Loans and Leases Receivable Disclosure [Line Items]
Loans	4,469,241	4,384,569
Real estate construction
Loans and Leases Receivable Disclosure [Line Items]
Loans	1,760,076	1,808,976
Commercial real estate lending
Loans and Leases Receivable Disclosure [Line Items]
Loans	6,229,317	6,193,545
Total commercial
Loans and Leases Receivable Disclosure [Line Items]
Loans	15,554,303	15,617,256
Residential mortgage
Loans and Leases Receivable Disclosure [Line Items]
Loans	7,609,343	7,567,310
Home equity
Loans and Leases Receivable Disclosure [Line Items]
Loans	580,867	595,615
Other consumer
Loans and Leases Receivable Disclosure [Line Items]
Loans	289,889	301,723
Auto
Loans and Leases Receivable Disclosure [Line Items]
Loans	497,523	143,045
Total consumer
Loans and Leases Receivable Disclosure [Line Items]
Loans	$ 8,977,622	$ 8,607,693

Loans, Credit Quality Indicator

Loans, Credit Quality Indicator by Vintage Year (Details) - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	$ 3,148	$ 60,636
Financing Receivable, Revolving	2,958,343	3,253,933
Financing Receivable, Originated in Current Fiscal Year	1,522,296	7,524,778
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	7,694,390	4,394,206
Financing Receivable, Originated Two Years before Latest Fiscal Year	4,212,949	3,377,569
Financing Receivable, Originated Three Years before Latest Fiscal Year	3,024,804	1,801,486
Financing Receivable, Originated Four Years before Latest Fiscal Year	1,518,646	1,067,713
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	3,600,497	2,805,265
Total	24,531,926	24,224,949
Special Mention [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	94	140
Financing Receivable, Revolving	12,417	7,745
Financing Receivable, Originated in Current Fiscal Year	2,750	65,478
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	62,538	46,023
Financing Receivable, Originated Two Years before Latest Fiscal Year	32,767	33,021
Financing Receivable, Originated Three Years before Latest Fiscal Year	49,315	16,241
Financing Receivable, Originated Four Years before Latest Fiscal Year	56	41
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	46,283	10,946
Total	206,125	179,495
Pass [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	2,774	56,777
Financing Receivable, Revolving	2,939,973	3,219,121
Financing Receivable, Originated in Current Fiscal Year	1,478,182	7,352,605
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	7,535,570	4,301,809
Financing Receivable, Originated Two Years before Latest Fiscal Year	4,116,960	3,232,703
Financing Receivable, Originated Three Years before Latest Fiscal Year	2,882,275	1,722,157
Financing Receivable, Originated Four Years before Latest Fiscal Year	1,461,624	1,055,380
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	3,497,303	2,734,332
Total	23,911,887	23,618,106
Potential Problem [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	37	2,713
Financing Receivable, Revolving	5,850	26,913
Financing Receivable, Originated in Current Fiscal Year	39,742	53,194
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	28,709	34,992
Financing Receivable, Originated Two Years before Latest Fiscal Year	51,886	100,240
Financing Receivable, Originated Three Years before Latest Fiscal Year	82,071	56,519
Financing Receivable, Originated Four Years before Latest Fiscal Year	49,678	5,952
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	12,757	19,095
Total	270,693	296,905
Nonaccrual Loan [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	242	1,006
Financing Receivable, Revolving	103	154
Financing Receivable, Originated in Current Fiscal Year	1,623	53,501
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	67,573	11,382
Financing Receivable, Originated Two Years before Latest Fiscal Year	11,335	11,605
Financing Receivable, Originated Three Years before Latest Fiscal Year	11,143	6,569
Financing Receivable, Originated Four Years before Latest Fiscal Year	7,288	6,340
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	44,154	40,891
Total	143,221	130,443
Total commercial
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	108	52,388
Financing Receivable, Revolving	2,296,504	2,573,974
Financing Receivable, Originated in Current Fiscal Year	911,231	5,602,382
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	5,669,886	2,438,627
Financing Receivable, Originated Two Years before Latest Fiscal Year	2,344,541	2,385,040
Financing Receivable, Originated Three Years before Latest Fiscal Year	2,092,770	1,355,608
Financing Receivable, Originated Four Years before Latest Fiscal Year	1,094,228	379,567
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	1,145,143	882,057
Total	15,554,303	15,617,256
Total commercial | Special Mention [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	0	0
Financing Receivable, Revolving	11,865	7,294
Financing Receivable, Originated in Current Fiscal Year	2,750	65,478
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	62,486	45,917
Financing Receivable, Originated Two Years before Latest Fiscal Year	32,755	33,016
Financing Receivable, Originated Three Years before Latest Fiscal Year	49,302	15,957
Financing Receivable, Originated Four Years before Latest Fiscal Year	0	41
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	45,800	9,840
Total	204,958	177,543
Total commercial | Pass [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	0	49,606
Financing Receivable, Revolving	2,278,789	2,539,768
Financing Receivable, Originated in Current Fiscal Year	868,372	5,432,693
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	5,513,755	2,349,685
Financing Receivable, Originated Two Years before Latest Fiscal Year	2,252,087	2,245,316
Financing Receivable, Originated Three Years before Latest Fiscal Year	1,954,972	1,283,386
Financing Receivable, Originated Four Years before Latest Fiscal Year	1,044,840	373,655
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	1,087,265	853,551
Total	15,000,080	15,078,053
Total commercial | Potential Problem [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	37	2,706
Financing Receivable, Revolving	5,850	26,913
Financing Receivable, Originated in Current Fiscal Year	39,466	52,713
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	28,241	34,660
Financing Receivable, Originated Two Years before Latest Fiscal Year	51,598	99,837
Financing Receivable, Originated Three Years before Latest Fiscal Year	81,493	56,241
Financing Receivable, Originated Four Years before Latest Fiscal Year	49,388	5,871
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	11,469	18,291
Total	267,505	294,527
Total commercial | Nonaccrual Loan [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	71	76
Financing Receivable, Revolving	0	0
Financing Receivable, Originated in Current Fiscal Year	644	51,498
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	65,404	8,365
Financing Receivable, Originated Two Years before Latest Fiscal Year	8,101	6,872
Financing Receivable, Originated Three Years before Latest Fiscal Year	7,003	24
Financing Receivable, Originated Four Years before Latest Fiscal Year	0	0
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	609	374
Total	81,761	67,134
Total commercial | PPP
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	0	0
Financing Receivable, Revolving	0	0
Financing Receivable, Originated in Current Fiscal Year	0	47,134
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	16,118	18,936
Financing Receivable, Originated Two Years before Latest Fiscal Year	1,877	0
Financing Receivable, Originated Three Years before Latest Fiscal Year	0	0
Financing Receivable, Originated Four Years before Latest Fiscal Year	0	0
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	0	0
Total	17,995	66,070
Total commercial | PPP | Special Mention [Member]
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		212
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year		281
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		493
Total commercial | PPP | Pass [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	0	0
Financing Receivable, Revolving	0	0
Financing Receivable, Originated in Current Fiscal Year	0	44,921
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	16,118	18,610
Financing Receivable, Originated Two Years before Latest Fiscal Year	1,782	0
Financing Receivable, Originated Three Years before Latest Fiscal Year	0	0
Financing Receivable, Originated Four Years before Latest Fiscal Year	0	0
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	0	0
Total	17,900	63,531
Total commercial | PPP | Potential Problem [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	0	0
Financing Receivable, Revolving	0	0
Financing Receivable, Originated in Current Fiscal Year	0	2,000
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	0	0
Financing Receivable, Originated Two Years before Latest Fiscal Year	54	0
Financing Receivable, Originated Three Years before Latest Fiscal Year	0	0
Financing Receivable, Originated Four Years before Latest Fiscal Year	0	0
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	0	0
Total	54	2,000
Total commercial | PPP | Nonaccrual Loan [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	0	0
Financing Receivable, Revolving	0	0
Financing Receivable, Originated in Current Fiscal Year	0	0
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	0	46
Financing Receivable, Originated Two Years before Latest Fiscal Year	41	0
Financing Receivable, Originated Three Years before Latest Fiscal Year	0	0
Financing Receivable, Originated Four Years before Latest Fiscal Year	0	0
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	0	0
Total	41	46
Total commercial | Asset-Based Lending
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	0
Financing Receivable, Revolving	29,681
Financing Receivable, Originated in Current Fiscal Year	22,962
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	116,851
Financing Receivable, Originated Two Years before Latest Fiscal Year	59,930
Financing Receivable, Originated Three Years before Latest Fiscal Year	1,243
Financing Receivable, Originated Four Years before Latest Fiscal Year	223
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	150
Total	231,040
Total commercial | Asset-Based Lending | Pass [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	0
Financing Receivable, Revolving	27,624
Financing Receivable, Originated in Current Fiscal Year	22,962
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	116,851
Financing Receivable, Originated Two Years before Latest Fiscal Year	42,930
Financing Receivable, Originated Three Years before Latest Fiscal Year	1,243
Financing Receivable, Originated Four Years before Latest Fiscal Year	223
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	150
Total	211,982
Total commercial | Asset-Based Lending | Potential Problem [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	0
Financing Receivable, Revolving	2,057
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	17,000
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	19,057
Total commercial | Commercial And Industrial Financing Receivable [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	108	4,867
Financing Receivable, Revolving	2,128,462	2,405,059
Financing Receivable, Originated in Current Fiscal Year	337,623	2,667,064
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	2,630,255	874,575
Financing Receivable, Originated Two Years before Latest Fiscal Year	809,074	1,032,647
Financing Receivable, Originated Three Years before Latest Fiscal Year	950,944	731,439
Financing Receivable, Originated Four Years before Latest Fiscal Year	603,306	177,671
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	642,716	497,860
Total	8,102,380	8,386,316
Total commercial | Commercial And Industrial Financing Receivable [Member] | Special Mention [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	0	0
Financing Receivable, Revolving	11,619	7,068
Financing Receivable, Originated in Current Fiscal Year	0	5,900
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	5,900	1,695
Financing Receivable, Originated Two Years before Latest Fiscal Year	3,226	0
Financing Receivable, Originated Three Years before Latest Fiscal Year	0	0
Financing Receivable, Originated Four Years before Latest Fiscal Year	0	0
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	38,777	2,811
Total	59,521	17,474
Total commercial | Commercial And Industrial Financing Receivable [Member] | Pass [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	0	2,084
Financing Receivable, Revolving	2,113,051	2,371,605
Financing Receivable, Originated in Current Fiscal Year	320,013	2,631,753
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	2,622,986	852,758
Financing Receivable, Originated Two Years before Latest Fiscal Year	802,154	986,300
Financing Receivable, Originated Three Years before Latest Fiscal Year	905,744	710,491
Financing Receivable, Originated Four Years before Latest Fiscal Year	582,722	177,568
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	602,568	493,876
Total	7,949,237	8,224,351
Total commercial | Commercial And Industrial Financing Receivable [Member] | Potential Problem [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	37	2,706
Financing Receivable, Revolving	3,793	26,387
Financing Receivable, Originated in Current Fiscal Year	17,540	23,415
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	1,369	19,960
Financing Receivable, Originated Two Years before Latest Fiscal Year	3,540	46,296
Financing Receivable, Originated Three Years before Latest Fiscal Year	45,200	20,924
Financing Receivable, Originated Four Years before Latest Fiscal Year	20,584	104
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	1,372	1,172
Total	93,396	138,258
Total commercial | Commercial And Industrial Financing Receivable [Member] | Nonaccrual Loan [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	71	76
Financing Receivable, Revolving	0	0
Financing Receivable, Originated in Current Fiscal Year	71	5,996
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	0	161
Financing Receivable, Originated Two Years before Latest Fiscal Year	154	52
Financing Receivable, Originated Three Years before Latest Fiscal Year	0	24
Financing Receivable, Originated Four Years before Latest Fiscal Year	0	0
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	0	0
Total	225	6,233
Total commercial | Commercial real estate — owner occupied
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	0	10,092
Financing Receivable, Revolving	20,194	31,621
Financing Receivable, Originated in Current Fiscal Year	29,485	267,371
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	279,166	187,773
Financing Receivable, Originated Two Years before Latest Fiscal Year	186,678	197,120
Financing Receivable, Originated Three Years before Latest Fiscal Year	191,855	110,896
Financing Receivable, Originated Four Years before Latest Fiscal Year	106,991	56,742
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	159,202	119,802
Total	973,572	971,326
Total commercial | Commercial real estate — owner occupied | Special Mention [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	0	0
Financing Receivable, Revolving	247	226
Financing Receivable, Originated in Current Fiscal Year	0	0
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	0	4,628
Financing Receivable, Originated Two Years before Latest Fiscal Year	1,310	0
Financing Receivable, Originated Three Years before Latest Fiscal Year	0	0
Financing Receivable, Originated Four Years before Latest Fiscal Year	0	0
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	169	245
Total	1,726	5,100
Total commercial | Commercial real estate — owner occupied | Pass [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	0	10,092
Financing Receivable, Revolving	19,947	30,869
Financing Receivable, Originated in Current Fiscal Year	28,850	261,418
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	273,534	178,424
Financing Receivable, Originated Two Years before Latest Fiscal Year	183,174	187,073
Financing Receivable, Originated Three Years before Latest Fiscal Year	181,284	110,169
Financing Receivable, Originated Four Years before Latest Fiscal Year	106,991	54,538
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	154,061	117,011
Total	947,840	939,503
Total commercial | Commercial real estate — owner occupied | Potential Problem [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	0	0
Financing Receivable, Revolving	0	526
Financing Receivable, Originated in Current Fiscal Year	635	5,953
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	5,632	4,721
Financing Receivable, Originated Two Years before Latest Fiscal Year	2,195	10,047
Financing Receivable, Originated Three Years before Latest Fiscal Year	10,571	727
Financing Receivable, Originated Four Years before Latest Fiscal Year	0	2,204
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	4,972	2,546
Total	24,005	26,723
Total commercial | Commercial and business lending
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	108	14,958
Financing Receivable, Revolving	2,178,337	2,436,680
Financing Receivable, Originated in Current Fiscal Year	390,071	2,981,569
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	3,042,390	1,081,284
Financing Receivable, Originated Two Years before Latest Fiscal Year	1,057,559	1,229,767
Financing Receivable, Originated Three Years before Latest Fiscal Year	1,144,041	842,335
Financing Receivable, Originated Four Years before Latest Fiscal Year	710,520	234,414
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	802,068	617,662
Total	9,324,986	9,423,711
Total commercial | Commercial and business lending | Special Mention [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	0	0
Financing Receivable, Revolving	11,865	7,294
Financing Receivable, Originated in Current Fiscal Year	0	6,112
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	5,900	6,604
Financing Receivable, Originated Two Years before Latest Fiscal Year	4,537	0
Financing Receivable, Originated Three Years before Latest Fiscal Year	0	0
Financing Receivable, Originated Four Years before Latest Fiscal Year	0	0
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	38,946	3,056
Total	61,248	23,066
Total commercial | Commercial and business lending | Pass [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	0	12,176
Financing Receivable, Revolving	2,160,622	2,402,474
Financing Receivable, Originated in Current Fiscal Year	371,825	2,938,092
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	3,029,488	1,049,792
Financing Receivable, Originated Two Years before Latest Fiscal Year	1,030,039	1,173,373
Financing Receivable, Originated Three Years before Latest Fiscal Year	1,088,271	820,660
Financing Receivable, Originated Four Years before Latest Fiscal Year	689,936	232,106
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	756,778	610,887
Total	9,126,959	9,227,385
Total commercial | Commercial and business lending | Potential Problem [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	37	2,706
Financing Receivable, Revolving	5,850	26,913
Financing Receivable, Originated in Current Fiscal Year	18,175	31,368
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	7,001	24,681
Financing Receivable, Originated Two Years before Latest Fiscal Year	22,788	56,343
Financing Receivable, Originated Three Years before Latest Fiscal Year	55,771	21,651
Financing Receivable, Originated Four Years before Latest Fiscal Year	20,584	2,307
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	6,344	3,718
Total	136,513	166,981
Total commercial | Commercial and business lending | Nonaccrual Loan [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	71	76
Financing Receivable, Revolving	0	0
Financing Receivable, Originated in Current Fiscal Year	71	5,996
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	0	207
Financing Receivable, Originated Two Years before Latest Fiscal Year	195	52
Financing Receivable, Originated Three Years before Latest Fiscal Year	0	24
Financing Receivable, Originated Four Years before Latest Fiscal Year	0	0
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	0	0
Total	266	6,279
Total commercial | Commercial real estate — investor
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	0	37,430
Financing Receivable, Revolving	90,319	105,521
Financing Receivable, Originated in Current Fiscal Year	415,721	1,774,910
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	1,758,799	730,825
Financing Receivable, Originated Two Years before Latest Fiscal Year	757,172	929,685
Financing Receivable, Originated Three Years before Latest Fiscal Year	779,391	448,741
Financing Receivable, Originated Four Years before Latest Fiscal Year	337,767	142,883
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	330,071	252,003
Total	4,469,241	4,384,569
Total commercial | Commercial real estate — investor | Special Mention [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	0	0
Financing Receivable, Revolving	0	0
Financing Receivable, Originated in Current Fiscal Year	2,750	57,163
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	55,652	27,384
Financing Receivable, Originated Two Years before Latest Fiscal Year	16,289	33,016
Financing Receivable, Originated Three Years before Latest Fiscal Year	32,847	72
Financing Receivable, Originated Four Years before Latest Fiscal Year	0	0
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	6,855	6,781
Total	114,393	124,416
Total commercial | Commercial real estate — investor | Pass [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	0	37,430
Financing Receivable, Revolving	90,319	105,521
Financing Receivable, Originated in Current Fiscal Year	391,108	1,650,936
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	1,616,587	685,423
Financing Receivable, Originated Two Years before Latest Fiscal Year	704,283	867,606
Financing Receivable, Originated Three Years before Latest Fiscal Year	713,819	414,079
Financing Receivable, Originated Four Years before Latest Fiscal Year	308,963	139,320
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	318,092	230,452
Total	4,143,170	4,093,337
Total commercial | Commercial real estate — investor | Potential Problem [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	0	0
Financing Receivable, Revolving	0	0
Financing Receivable, Originated in Current Fiscal Year	21,291	21,309
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	21,155	9,860
Financing Receivable, Originated Two Years before Latest Fiscal Year	28,694	22,243
Financing Receivable, Originated Three Years before Latest Fiscal Year	25,722	34,591
Financing Receivable, Originated Four Years before Latest Fiscal Year	28,804	3,564
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	5,125	14,573
Total	130,792	106,138
Total commercial | Commercial real estate — investor | Nonaccrual Loan [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	0	0
Financing Receivable, Revolving	0	0
Financing Receivable, Originated in Current Fiscal Year	573	45,502
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	65,404	8,158
Financing Receivable, Originated Two Years before Latest Fiscal Year	7,906	6,820
Financing Receivable, Originated Three Years before Latest Fiscal Year	7,003	0
Financing Receivable, Originated Four Years before Latest Fiscal Year	0	0
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	0	197
Total	80,886	60,677
Total commercial | Real Estate Construction
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	0	0
Financing Receivable, Revolving	27,848	31,773
Financing Receivable, Originated in Current Fiscal Year	105,439	845,903
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	868,698	626,518
Financing Receivable, Originated Two Years before Latest Fiscal Year	529,810	225,588
Financing Receivable, Originated Three Years before Latest Fiscal Year	169,337	64,532
Financing Receivable, Originated Four Years before Latest Fiscal Year	45,941	2,270
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	13,004	12,392
Total	1,760,076	1,808,976
Total commercial | Real Estate Construction | Special Mention [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	0	0
Financing Receivable, Revolving	0	0
Financing Receivable, Originated in Current Fiscal Year	0	2,203
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	934	11,929
Financing Receivable, Originated Two Years before Latest Fiscal Year	11,929	0
Financing Receivable, Originated Three Years before Latest Fiscal Year	16,454	15,885
Financing Receivable, Originated Four Years before Latest Fiscal Year	0	41
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	0	2
Total	29,317	30,060
Total commercial | Real Estate Construction | Pass [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	0	0
Financing Receivable, Revolving	27,848	31,773
Financing Receivable, Originated in Current Fiscal Year	105,439	843,664
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	867,680	614,469
Financing Receivable, Originated Two Years before Latest Fiscal Year	517,765	204,337
Financing Receivable, Originated Three Years before Latest Fiscal Year	152,883	48,647
Financing Receivable, Originated Four Years before Latest Fiscal Year	45,941	2,229
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	12,395	12,212
Total	1,729,950	1,757,331
Total commercial | Real Estate Construction | Potential Problem [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	0	0
Financing Receivable, Revolving	0	0
Financing Receivable, Originated in Current Fiscal Year	0	37
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	84	120
Financing Receivable, Originated Two Years before Latest Fiscal Year	116	21,251
Financing Receivable, Originated Three Years before Latest Fiscal Year	0	0
Financing Receivable, Originated Four Years before Latest Fiscal Year	0	0
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	0	0
Total	200	21,408
Total commercial | Real Estate Construction | Nonaccrual Loan [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	0	0
Financing Receivable, Revolving	0	0
Financing Receivable, Originated in Current Fiscal Year	0	0
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	0	0
Financing Receivable, Originated Two Years before Latest Fiscal Year	0	0
Financing Receivable, Originated Three Years before Latest Fiscal Year	0	0
Financing Receivable, Originated Four Years before Latest Fiscal Year	0	0
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	609	177
Total	609	177
Total commercial | Commercial Real Estate
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	0	37,430
Financing Receivable, Revolving	118,167	137,294
Financing Receivable, Originated in Current Fiscal Year	521,160	2,620,814
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	2,627,496	1,357,343
Financing Receivable, Originated Two Years before Latest Fiscal Year	1,286,982	1,155,273
Financing Receivable, Originated Three Years before Latest Fiscal Year	948,729	513,273
Financing Receivable, Originated Four Years before Latest Fiscal Year	383,708	145,153
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	343,075	264,395
Total	6,229,317	6,193,545
Total commercial | Commercial Real Estate | Special Mention [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	0	0
Financing Receivable, Revolving	0	0
Financing Receivable, Originated in Current Fiscal Year	2,750	59,366
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	56,586	39,313
Financing Receivable, Originated Two Years before Latest Fiscal Year	28,218	33,016
Financing Receivable, Originated Three Years before Latest Fiscal Year	49,302	15,957
Financing Receivable, Originated Four Years before Latest Fiscal Year	0	41
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	6,855	6,784
Total	143,711	154,476
Total commercial | Commercial Real Estate | Pass [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	0	37,430
Financing Receivable, Revolving	118,167	137,294
Financing Receivable, Originated in Current Fiscal Year	496,547	2,494,600
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	2,484,267	1,299,893
Financing Receivable, Originated Two Years before Latest Fiscal Year	1,222,047	1,071,943
Financing Receivable, Originated Three Years before Latest Fiscal Year	866,702	462,726
Financing Receivable, Originated Four Years before Latest Fiscal Year	354,904	141,549
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	330,487	242,664
Total	5,873,120	5,850,668
Total commercial | Commercial Real Estate | Potential Problem [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	0	0
Financing Receivable, Revolving	0	0
Financing Receivable, Originated in Current Fiscal Year	21,291	21,345
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	21,239	9,980
Financing Receivable, Originated Two Years before Latest Fiscal Year	28,810	43,494
Financing Receivable, Originated Three Years before Latest Fiscal Year	25,722	34,591
Financing Receivable, Originated Four Years before Latest Fiscal Year	28,804	3,564
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	5,125	14,573
Total	130,992	127,546
Total commercial | Commercial Real Estate | Nonaccrual Loan [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	0	0
Financing Receivable, Revolving	0	0
Financing Receivable, Originated in Current Fiscal Year	573	45,502
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	65,404	8,158
Financing Receivable, Originated Two Years before Latest Fiscal Year	7,906	6,820
Financing Receivable, Originated Three Years before Latest Fiscal Year	7,003	0
Financing Receivable, Originated Four Years before Latest Fiscal Year	0	0
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	609	374
Total	81,495	60,855
Auto
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	0	0
Financing Receivable, Revolving	0	0
Financing Receivable, Originated in Current Fiscal Year	357,813	137,952
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	135,606	707
Financing Receivable, Originated Two Years before Latest Fiscal Year	578	2,711
Financing Receivable, Originated Three Years before Latest Fiscal Year	2,296	1,216
Financing Receivable, Originated Four Years before Latest Fiscal Year	934	352
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	296	107
Total	497,523	143,045
Auto | Special Mention [Member]
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	42
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	1
Total	42
Auto | Pass [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	0	0
Financing Receivable, Revolving	0	0
Financing Receivable, Originated in Current Fiscal Year	357,813	137,952
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	135,564	707
Financing Receivable, Originated Two Years before Latest Fiscal Year	578	2,675
Financing Receivable, Originated Three Years before Latest Fiscal Year	2,262	1,200
Financing Receivable, Originated Four Years before Latest Fiscal Year	921	352
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	295	107
Total	497,432	142,993
Auto | Nonaccrual Loan [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	0	0
Financing Receivable, Revolving	0	0
Financing Receivable, Originated in Current Fiscal Year	0	0
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	0	0
Financing Receivable, Originated Two Years before Latest Fiscal Year	0	36
Financing Receivable, Originated Three Years before Latest Fiscal Year	35	15
Financing Receivable, Originated Four Years before Latest Fiscal Year	14	0
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	0	0
Total	49	52
Total consumer
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	3,040	8,248
Financing Receivable, Revolving	661,840	679,959
Financing Receivable, Originated in Current Fiscal Year	611,065	1,922,396
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	2,024,504	1,955,579
Financing Receivable, Originated Two Years before Latest Fiscal Year	1,868,408	992,528
Financing Receivable, Originated Three Years before Latest Fiscal Year	932,034	445,878
Financing Receivable, Originated Four Years before Latest Fiscal Year	424,418	688,145
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	2,455,354	1,923,208
Total	8,977,622	8,607,693
Total consumer | Special Mention [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	94	140
Financing Receivable, Revolving	551	451
Financing Receivable, Originated in Current Fiscal Year	0	0
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	52	106
Financing Receivable, Originated Two Years before Latest Fiscal Year	12	4
Financing Receivable, Originated Three Years before Latest Fiscal Year	14	285
Financing Receivable, Originated Four Years before Latest Fiscal Year	56	0
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	482	1,106
Total	1,167	1,952
Total consumer | Pass [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	2,774	7,171
Financing Receivable, Revolving	661,185	679,353
Financing Receivable, Originated in Current Fiscal Year	609,810	1,919,912
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	2,021,815	1,952,124
Financing Receivable, Originated Two Years before Latest Fiscal Year	1,864,874	987,387
Financing Receivable, Originated Three Years before Latest Fiscal Year	927,302	438,771
Financing Receivable, Originated Four Years before Latest Fiscal Year	416,784	681,725
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	2,410,038	1,880,781
Total	8,911,807	8,540,053
Total consumer | Potential Problem [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	0	6
Financing Receivable, Revolving	0	0
Financing Receivable, Originated in Current Fiscal Year	276	481
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	468	332
Financing Receivable, Originated Two Years before Latest Fiscal Year	288	404
Financing Receivable, Originated Three Years before Latest Fiscal Year	578	277
Financing Receivable, Originated Four Years before Latest Fiscal Year	290	81
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	1,288	804
Total	3,188	2,379
Total consumer | Nonaccrual Loan [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	171	931
Financing Receivable, Revolving	103	154
Financing Receivable, Originated in Current Fiscal Year	979	2,003
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	2,169	3,017
Financing Receivable, Originated Two Years before Latest Fiscal Year	3,234	4,733
Financing Receivable, Originated Three Years before Latest Fiscal Year	4,141	6,545
Financing Receivable, Originated Four Years before Latest Fiscal Year	7,288	6,340
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	43,546	40,517
Total	61,460	63,309
Total consumer | Residential mortgage
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	0	0
Financing Receivable, Revolving	0	0
Financing Receivable, Originated in Current Fiscal Year	249,198	1,773,915
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	1,877,520	1,948,272
Financing Receivable, Originated Two Years before Latest Fiscal Year	1,862,703	979,071
Financing Receivable, Originated Three Years before Latest Fiscal Year	920,564	435,233
Financing Receivable, Originated Four Years before Latest Fiscal Year	414,606	679,547
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	2,284,751	1,751,272
Total	7,609,343	7,567,310
Total consumer | Residential mortgage | Special Mention [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	0	0
Financing Receivable, Revolving	0	0
Financing Receivable, Originated in Current Fiscal Year	0	0
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	0	0
Financing Receivable, Originated Two Years before Latest Fiscal Year	0	0
Financing Receivable, Originated Three Years before Latest Fiscal Year	0	285
Financing Receivable, Originated Four Years before Latest Fiscal Year	0	0
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	90	461
Total	90	746
Total consumer | Residential mortgage | Pass [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	0	0
Financing Receivable, Revolving	0	0
Financing Receivable, Originated in Current Fiscal Year	247,943	1,771,447
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	1,874,892	1,945,029
Financing Receivable, Originated Two Years before Latest Fiscal Year	1,859,312	974,188
Financing Receivable, Originated Three Years before Latest Fiscal Year	916,031	428,459
Financing Receivable, Originated Four Years before Latest Fiscal Year	407,380	673,447
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	2,246,835	1,716,419
Total	7,552,394	7,508,989
Total consumer | Residential mortgage | Potential Problem [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	0	0
Financing Receivable, Revolving	0	0
Financing Receivable, Originated in Current Fiscal Year	276	475
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	468	332
Financing Receivable, Originated Two Years before Latest Fiscal Year	288	404
Financing Receivable, Originated Three Years before Latest Fiscal Year	578	265
Financing Receivable, Originated Four Years before Latest Fiscal Year	280	81
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	1,142	658
Total	3,032	2,214
Total consumer | Residential mortgage | Nonaccrual Loan [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	0	0
Financing Receivable, Revolving	0	0
Financing Receivable, Originated in Current Fiscal Year	979	1,993
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	2,160	2,911
Financing Receivable, Originated Two Years before Latest Fiscal Year	3,102	4,479
Financing Receivable, Originated Three Years before Latest Fiscal Year	3,955	6,224
Financing Receivable, Originated Four Years before Latest Fiscal Year	6,946	6,019
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	36,684	33,734
Total	53,827	55,362
Total consumer | Home Equity Loan [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	2,960	7,792
Financing Receivable, Revolving	487,152	499,104
Financing Receivable, Originated in Current Fiscal Year	2,212	1,232
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	2,254	1,595
Financing Receivable, Originated Two Years before Latest Fiscal Year	1,599	7,856
Financing Receivable, Originated Three Years before Latest Fiscal Year	7,058	9,059
Financing Receivable, Originated Four Years before Latest Fiscal Year	8,537	7,962
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	72,054	68,807
Total	580,867	595,615
Total consumer | Home Equity Loan [Member] | Special Mention [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	91	133
Financing Receivable, Revolving	122	100
Financing Receivable, Originated in Current Fiscal Year	0	0
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	0	102
Financing Receivable, Originated Two Years before Latest Fiscal Year	0	4
Financing Receivable, Originated Three Years before Latest Fiscal Year	14	0
Financing Receivable, Originated Four Years before Latest Fiscal Year	56	0
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	384	638
Total	575	844
Total consumer | Home Equity Loan [Member] | Pass [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	2,698	6,728
Financing Receivable, Revolving	486,976	498,970
Financing Receivable, Originated in Current Fiscal Year	2,212	1,216
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	2,245	1,401
Financing Receivable, Originated Two Years before Latest Fiscal Year	1,480	7,640
Financing Receivable, Originated Three Years before Latest Fiscal Year	6,900	8,742
Financing Receivable, Originated Four Years before Latest Fiscal Year	8,143	7,660
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	64,691	61,251
Total	572,646	586,880
Total consumer | Home Equity Loan [Member] | Potential Problem [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	0	6
Financing Receivable, Revolving	0	0
Financing Receivable, Originated in Current Fiscal Year	0	6
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	0	0
Financing Receivable, Originated Two Years before Latest Fiscal Year	0	0
Financing Receivable, Originated Three Years before Latest Fiscal Year	0	13
Financing Receivable, Originated Four Years before Latest Fiscal Year	10	0
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	146	146
Total	156	165
Total consumer | Home Equity Loan [Member] | Nonaccrual Loan [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	171	925
Financing Receivable, Revolving	55	35
Financing Receivable, Originated in Current Fiscal Year	0	9
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	9	92
Financing Receivable, Originated Two Years before Latest Fiscal Year	119	211
Financing Receivable, Originated Three Years before Latest Fiscal Year	145	305
Financing Receivable, Originated Four Years before Latest Fiscal Year	328	302
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	6,834	6,772
Total	7,490	7,726
Total consumer | Other consumer
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	80	456
Financing Receivable, Revolving	174,687	180,783
Financing Receivable, Originated in Current Fiscal Year	1,843	9,297
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	9,123	5,005
Financing Receivable, Originated Two Years before Latest Fiscal Year	3,528	2,890
Financing Receivable, Originated Three Years before Latest Fiscal Year	2,115	371
Financing Receivable, Originated Four Years before Latest Fiscal Year	340	284
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	98,253	103,093
Total	289,889	301,723
Total consumer | Other consumer | Special Mention [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	4	7
Financing Receivable, Revolving	429	351
Financing Receivable, Originated in Current Fiscal Year	0	0
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	10	4
Financing Receivable, Originated Two Years before Latest Fiscal Year	12	0
Financing Receivable, Originated Three Years before Latest Fiscal Year	0	0
Financing Receivable, Originated Four Years before Latest Fiscal Year	0	0
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	8	7
Total	459	363
Total consumer | Other consumer | Pass [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	76	443
Financing Receivable, Revolving	174,209	180,312
Financing Receivable, Originated in Current Fiscal Year	1,843	9,297
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	9,113	4,987
Financing Receivable, Originated Two Years before Latest Fiscal Year	3,504	2,884
Financing Receivable, Originated Three Years before Latest Fiscal Year	2,109	371
Financing Receivable, Originated Four Years before Latest Fiscal Year	340	265
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	98,217	103,075
Total	289,335	301,191
Total consumer | Other consumer | Nonaccrual Loan [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	1	6
Financing Receivable, Revolving	49	120
Financing Receivable, Originated in Current Fiscal Year	0	0
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	0	14
Financing Receivable, Originated Two Years before Latest Fiscal Year	12	7
Financing Receivable, Originated Three Years before Latest Fiscal Year	6	0
Financing Receivable, Originated Four Years before Latest Fiscal Year	0	19
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	28	11
Total	$ 95	$ 170

Loans Past Due Status (Details)

Loans Past Due Status (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2022	Dec. 31, 2021
Summarized details of Loans
Current	$ 24,374,481	$ 24,077,931
Nonaccrual(a)(b)	143,221	130,443
Loans and Leases Receivable, Net of Deferred Income, Total	24,531,926	24,224,949
Nonaccrual Loans, Current Portion	$ 98,000	$ 84,000
Percent of current nonaccrual loans	69.00%	65.00%
Financing Receivable, Nonaccrual, Interest Income	$ 0	$ 0
Financing Receivable, Nonaccrual, No Allowance	24,000	9,000
30-59 Days Past Due
Summarized details of Loans
Total Past Due	11,233	12,754
60-89 Days Past Due
Summarized details of Loans
Total Past Due	1,396	2,558
90+ Days Past Due
Summarized details of Loans
Total Past Due	1,595	1,263
PPP
Summarized details of Loans
Current	17,953	65,941
Nonaccrual(a)(b)	41	46
Loans and Leases Receivable, Net of Deferred Income, Total	17,995	66,070
PPP | 30-59 Days Past Due
Summarized details of Loans
Total Past Due	0	40
PPP | 60-89 Days Past Due
Summarized details of Loans
Total Past Due	1	43
PPP | 90+ Days Past Due
Summarized details of Loans
Total Past Due	0	0
Asset-Based Lending
Summarized details of Loans
Current	231,040	178,027
Nonaccrual(a)(b)	0	0
Loans and Leases Receivable, Net of Deferred Income, Total	231,040	178,027
Asset-Based Lending | 30-59 Days Past Due
Summarized details of Loans
Total Past Due	0	0
Asset-Based Lending | 60-89 Days Past Due
Summarized details of Loans
Total Past Due	0	0
Asset-Based Lending | 90+ Days Past Due
Summarized details of Loans
Total Past Due	0	0
Commercial and industrial
Summarized details of Loans
Current	8,100,945	8,201,272
Nonaccrual(a)(b)	225	6,233
Loans and Leases Receivable, Net of Deferred Income, Total	8,102,380	8,208,289
Commercial and industrial | 30-59 Days Past Due
Summarized details of Loans
Total Past Due	923	579
Commercial and industrial | 60-89 Days Past Due
Summarized details of Loans
Total Past Due	162	54
Commercial and industrial | 90+ Days Past Due
Summarized details of Loans
Total Past Due	125	151
Commercial real estate — owner occupied
Summarized details of Loans
Current	973,374	971,163
Nonaccrual(a)(b)	0	0
Loans and Leases Receivable, Net of Deferred Income, Total	973,572	971,326
Commercial real estate — owner occupied | 30-59 Days Past Due
Summarized details of Loans
Total Past Due	198	163
Commercial real estate — owner occupied | 60-89 Days Past Due
Summarized details of Loans
Total Past Due	0	0
Commercial real estate — owner occupied | 90+ Days Past Due
Summarized details of Loans
Total Past Due	0	0
Commercial and business lending
Summarized details of Loans
Current	9,323,311	9,416,403
Nonaccrual(a)(b)	266	6,279
Loans and Leases Receivable, Net of Deferred Income, Total	9,324,986	9,423,711
Commercial and business lending | 30-59 Days Past Due
Summarized details of Loans
Total Past Due	1,121	781
Commercial and business lending | 60-89 Days Past Due
Summarized details of Loans
Total Past Due	163	97
Commercial and business lending | 90+ Days Past Due
Summarized details of Loans
Total Past Due	125	151
Commercial real estate — investor
Summarized details of Loans
Current	4,388,355	4,323,276
Nonaccrual(a)(b)	80,886	60,677
Loans and Leases Receivable, Net of Deferred Income, Total	4,469,241	4,384,569
Commercial real estate — investor | 30-59 Days Past Due
Summarized details of Loans
Total Past Due	0	142
Commercial real estate — investor | 60-89 Days Past Due
Summarized details of Loans
Total Past Due	0	474
Commercial real estate — investor | 90+ Days Past Due
Summarized details of Loans
Total Past Due	0	0
Real estate construction
Summarized details of Loans
Current	1,759,467	1,807,178
Nonaccrual(a)(b)	609	177
Loans and Leases Receivable, Net of Deferred Income, Total	1,760,076	1,808,976
Real estate construction | 30-59 Days Past Due
Summarized details of Loans
Total Past Due	0	1,618
Real estate construction | 60-89 Days Past Due
Summarized details of Loans
Total Past Due	0	2
Real estate construction | 90+ Days Past Due
Summarized details of Loans
Total Past Due	0	0
Commercial real estate lending
Summarized details of Loans
Current	6,147,823	6,130,454
Nonaccrual(a)(b)	81,495	60,855
Loans and Leases Receivable, Net of Deferred Income, Total	6,229,317	6,193,545
Commercial real estate lending | 30-59 Days Past Due
Summarized details of Loans
Total Past Due	0	1,759
Commercial real estate lending | 60-89 Days Past Due
Summarized details of Loans
Total Past Due	0	477
Commercial real estate lending | 90+ Days Past Due
Summarized details of Loans
Total Past Due	0	0
Total commercial
Summarized details of Loans
Current	15,471,134	15,546,857
Nonaccrual(a)(b)	81,761	67,134
Loans and Leases Receivable, Net of Deferred Income, Total	15,554,303	15,617,256
Total commercial | 30-59 Days Past Due
Summarized details of Loans
Total Past Due	1,121	2,541
Total commercial | 60-89 Days Past Due
Summarized details of Loans
Total Past Due	163	573
Total commercial | 90+ Days Past Due
Summarized details of Loans
Total Past Due	125	151
Residential mortgage
Summarized details of Loans
Current	7,550,015	7,505,654
Nonaccrual(a)(b)	53,827	55,362
Loans and Leases Receivable, Net of Deferred Income, Total	7,609,343	7,567,310
Residential mortgage | 30-59 Days Past Due
Summarized details of Loans
Total Past Due	4,867	5,500
Residential mortgage | 60-89 Days Past Due
Summarized details of Loans
Total Past Due	90	669
Residential mortgage | 90+ Days Past Due
Summarized details of Loans
Total Past Due	544	126
Home equity
Summarized details of Loans
Current	569,170	584,177
Nonaccrual(a)(b)	7,490	7,726
Loans and Leases Receivable, Net of Deferred Income, Total	580,867	595,615
Home equity | 30-59 Days Past Due
Summarized details of Loans
Total Past Due	3,632	2,867
Home equity | 60-89 Days Past Due
Summarized details of Loans
Total Past Due	575	844
Home equity | 90+ Days Past Due
Summarized details of Loans
Total Past Due	0	0
Other consumer
Summarized details of Loans
Current	287,636	298,261
Nonaccrual(a)(b)	95	170
Loans and Leases Receivable, Net of Deferred Income, Total	289,889	301,723
Other consumer | 30-59 Days Past Due
Summarized details of Loans
Total Past Due	707	1,835
Other consumer | 60-89 Days Past Due
Summarized details of Loans
Total Past Due	525	472
Other consumer | 90+ Days Past Due
Summarized details of Loans
Total Past Due	926	986
Auto
Summarized details of Loans
Current	496,526	142,982
Nonaccrual(a)(b)	49	52
Loans and Leases Receivable, Net of Deferred Income, Total	497,523	143,045
Auto | 30-59 Days Past Due
Summarized details of Loans
Total Past Due	906	11
Auto | 60-89 Days Past Due
Summarized details of Loans
Total Past Due	42	0
Auto | 90+ Days Past Due
Summarized details of Loans
Total Past Due	0	0
Total consumer
Summarized details of Loans
Current	8,903,347	8,531,074
Nonaccrual(a)(b)	61,460	63,309
Loans and Leases Receivable, Net of Deferred Income, Total	8,977,622	8,607,693
Total consumer | 30-59 Days Past Due
Summarized details of Loans
Total Past Due	10,112	10,213
Total consumer | 60-89 Days Past Due
Summarized details of Loans
Total Past Due	1,232	1,985
Total consumer | 90+ Days Past Due
Summarized details of Loans
Total Past Due	$ 1,470	$ 1,111

Loans, Troubled Debt Restructur

Loans, Troubled Debt Restructurings Performing and Nonaccrual (Details) - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
Financing Receivable, Troubled Debt Restructuring [Line Items]
Performing Restructured Loans	$ 30,003	$ 42,530
Nonaccrual Restructured Loans(a)	19,352	17,426
Commercial and industrial
Financing Receivable, Troubled Debt Restructuring [Line Items]
Performing Restructured Loans	7,426	8,687
Nonaccrual Restructured Loans(a)	0	0
Commercial real estate — owner occupied
Financing Receivable, Troubled Debt Restructuring [Line Items]
Performing Restructured Loans	473	967
Nonaccrual Restructured Loans(a)	0	0
Commercial real estate — investor
Financing Receivable, Troubled Debt Restructuring [Line Items]
Performing Restructured Loans	2,045	12,866
Nonaccrual Restructured Loans(a)	3,042	3,093
Real estate construction
Financing Receivable, Troubled Debt Restructuring [Line Items]
Performing Restructured Loans	183	242
Nonaccrual Restructured Loans(a)	44	45
Residential mortgage
Financing Receivable, Troubled Debt Restructuring [Line Items]
Performing Restructured Loans	16,644	16,316
Nonaccrual Restructured Loans(a)	15,336	13,483
Home equity
Financing Receivable, Troubled Debt Restructuring [Line Items]
Performing Restructured Loans	2,486	2,648
Nonaccrual Restructured Loans(a)	931	806
Other consumer
Financing Receivable, Troubled Debt Restructuring [Line Items]
Performing Restructured Loans	747	803
Nonaccrual Restructured Loans(a)	$ 0	$ 0

Loans, Loans Modified in a Trou

Loans, Loans Modified in a Troubled Debt Restructuring (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2022USD ($)loan	Mar. 31, 2021USD ($)loan
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Loans | loan	27	25
Recorded Investment(a)	$ 6,500	$ 5,999
Unpaid Principal Balance(b)	$ 6,603	$ 6,025
Commercial real estate — investor
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Loans | loan	0	4
Recorded Investment(a)	$ 0	$ 1,693
Unpaid Principal Balance(b)	$ 0	$ 1,693
Residential mortgage
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Loans | loan	24	20
Recorded Investment(a)	$ 6,421	$ 3,876
Unpaid Principal Balance(b)	$ 6,502	$ 3,902
Home equity
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Loans | loan	3	1
Recorded Investment(a)	$ 80	$ 430
Unpaid Principal Balance(b)	$ 101	$ 430

Loans, Troubled Debt Restruct_2

Loans, Troubled Debt Restructurings Subsequent Default (Details) - Residential mortgage $ in Thousands	3 Months Ended
	Mar. 31, 2022USD ($)loan	Mar. 31, 2021USD ($)loan
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Loans | loan	1	1
Recorded Investment | $	$ 884	$ 97

Loans, Changes in the Allowance

Loans, Changes in the Allowance for Loan Losses by Portfolio Segment (Details) - USD ($) $ in Thousands	3 Months Ended		12 Months Ended
	Mar. 31, 2022	Mar. 31, 2021	Dec. 31, 2021
Off-Balance Sheet, Credit Loss, Liability [Roll Forward]
Balance at beginning of period	$ 39,776	$ 47,776	$ 47,776
Off-Balance Sheet, Credit Loss, Liability	38,776		39,776
Provision for credit losses	(1,000)		(8,000)
Balance at end of period	38,776		39,776
Allowance for credit losses on loans
Provision for credit losses	(3,990)	(23,004)
Allowance for Loan and Lease Losses [Roll Forward]
Balance at beginning of period	280,015
Balance at end of period	279,058		280,015
Allowance for Loan Losses [Member]
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Balance at beginning of period	280,015	383,702	383,702
Financing Receivable, Allowance for Credit Loss	279,058		280,015
Charge offs	(2,028)		(40,652)
Recoveries	4,072		16,965
Net Charge offs	2,044		(23,687)
Provision for credit losses	(3,000)		(80,000)
Balance at end of period	279,058		280,015
Allowance for credit losses on loans
Charge offs	2,028		40,652
Recoveries	4,072		16,965
Net Charge offs	2,044		(23,687)
Allowance for Loan and Lease Losses [Roll Forward]
Net Charge offs	2,044		(23,687)
Allowance for Loan Losses [Member] | PPP
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Balance at beginning of period	51	531	531
Financing Receivable, Allowance for Credit Loss	11		51
Charge offs	0		0
Recoveries	0		0
Net Charge offs	0		0
Provision for credit losses	(39)		(480)
Balance at end of period	11		51
Allowance for credit losses on loans
Charge offs	0		0
Recoveries	0		0
Net Charge offs	0		0
Allowance for Loan and Lease Losses [Roll Forward]
Net Charge offs	0		0
Allowance for Loan Losses [Member] | Asset-Based Lending
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Balance at beginning of period	4,182	2,077	2,077
Financing Receivable, Allowance for Credit Loss	5,083		4,182
Charge offs	0		0
Recoveries	0		412
Net Charge offs	0		412
Provision for credit losses	901		1,693
Balance at end of period	5,083		4,182
Allowance for credit losses on loans
Charge offs	0		0
Recoveries	0		412
Net Charge offs	0		412
Allowance for Loan and Lease Losses [Roll Forward]
Net Charge offs	0		412
Allowance for Loan Losses [Member] | Commercial and industrial
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Balance at beginning of period	85,624	140,716	140,716
Financing Receivable, Allowance for Credit Loss	81,993		85,624
Charge offs	(1,104)		(21,564)
Recoveries	2,958		8,152
Net Charge offs	1,854		(13,412)
Provision for credit losses	(5,485)		(41,680)
Balance at end of period	81,993		85,624
Allowance for credit losses on loans
Charge offs	1,104		21,564
Recoveries	2,958		8,152
Net Charge offs	1,854		(13,412)
Allowance for Loan and Lease Losses [Roll Forward]
Net Charge offs	1,854		(13,412)
Allowance for Loan Losses [Member] | Commercial real estate — owner occupied
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Balance at beginning of period	11,473	11,274	11,274
Financing Receivable, Allowance for Credit Loss	11,127		11,473
Charge offs	0		0
Recoveries	3		120
Net Charge offs	3		120
Provision for credit losses	(349)		80
Balance at end of period	11,127		11,473
Allowance for credit losses on loans
Charge offs	0		0
Recoveries	3		120
Net Charge offs	3		120
Allowance for Loan and Lease Losses [Roll Forward]
Net Charge offs	3		120
Allowance for Loan Losses [Member] | Commercial and business lending
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Balance at beginning of period	101,330	154,598	154,598
Financing Receivable, Allowance for Credit Loss	98,214		101,330
Charge offs	(1,104)		(21,564)
Recoveries	2,961		8,684
Net Charge offs	1,857		(12,880)
Provision for credit losses	(4,973)		(40,388)
Balance at end of period	98,214		101,330
Allowance for credit losses on loans
Charge offs	1,104		21,564
Recoveries	2,961		8,684
Net Charge offs	1,857		(12,880)
Allowance for Loan and Lease Losses [Roll Forward]
Net Charge offs	1,857		(12,880)
Allowance for Loan Losses [Member] | Commercial real estate — investor
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Balance at beginning of period	72,803	93,435	93,435
Financing Receivable, Allowance for Credit Loss	73,361		72,803
Charge offs	0		(14,346)
Recoveries	0		3,162
Net Charge offs	0		(11,184)
Provision for credit losses	558		(9,448)
Balance at end of period	73,361		72,803
Allowance for credit losses on loans
Charge offs	0		14,346
Recoveries	0		3,162
Net Charge offs	0		(11,184)
Allowance for Loan and Lease Losses [Roll Forward]
Net Charge offs	0		(11,184)
Allowance for Loan Losses [Member] | Real estate construction
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Balance at beginning of period	37,643	59,193	59,193
Financing Receivable, Allowance for Credit Loss	39,757		37,643
Charge offs	0		(5)
Recoveries	32		126
Net Charge offs	32		121
Provision for credit losses	2,082		(21,672)
Balance at end of period	39,757		37,643
Allowance for credit losses on loans
Charge offs	0		5
Recoveries	32		126
Net Charge offs	32		121
Allowance for Loan and Lease Losses [Roll Forward]
Net Charge offs	32		121
Allowance for Loan Losses [Member] | Commercial real estate lending
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Balance at beginning of period	110,446	152,629	152,629
Financing Receivable, Allowance for Credit Loss	113,118		110,446
Charge offs	0		(14,351)
Recoveries	32		3,288
Net Charge offs	32		(11,063)
Provision for credit losses	2,640		(31,120)
Balance at end of period	113,118		110,446
Allowance for credit losses on loans
Charge offs	0		14,351
Recoveries	32		3,288
Net Charge offs	32		(11,063)
Allowance for Loan and Lease Losses [Roll Forward]
Net Charge offs	32		(11,063)
Allowance for Loan Losses [Member] | Total commercial
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Balance at beginning of period	211,776	307,226	307,226
Financing Receivable, Allowance for Credit Loss	211,332		211,776
Charge offs	(1,104)		(35,915)
Recoveries	2,993		11,972
Net Charge offs	1,889		(23,943)
Provision for credit losses	(2,333)		(71,508)
Balance at end of period	211,332		211,776
Allowance for credit losses on loans
Charge offs	1,104		35,915
Recoveries	2,993		11,972
Net Charge offs	1,889		(23,943)
Allowance for Loan and Lease Losses [Roll Forward]
Net Charge offs	1,889		(23,943)
Allowance for Loan Losses [Member] | Residential mortgage
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Balance at beginning of period	40,787	42,996	42,996
Financing Receivable, Allowance for Credit Loss	37,101		40,787
Charge offs	(43)		(880)
Recoveries	331		841
Net Charge offs	288		(38)
Provision for credit losses	(3,974)		(2,170)
Balance at end of period	37,101		40,787
Allowance for credit losses on loans
Charge offs	43		880
Recoveries	331		841
Net Charge offs	288		(38)
Allowance for Loan and Lease Losses [Roll Forward]
Net Charge offs	288		(38)
Allowance for Loan Losses [Member] | Home equity
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Balance at beginning of period	14,011	18,849	18,849
Financing Receivable, Allowance for Credit Loss	13,331		14,011
Charge offs	(125)		(668)
Recoveries	440		2,854
Net Charge offs	315		2,186
Provision for credit losses	(995)		(7,024)
Balance at end of period	13,331		14,011
Allowance for credit losses on loans
Charge offs	125		668
Recoveries	440		2,854
Net Charge offs	315		2,186
Allowance for Loan and Lease Losses [Roll Forward]
Net Charge offs	315		2,186
Allowance for Loan Losses [Member] | Other consumer
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Balance at beginning of period	11,441	14,456	14,456
Financing Receivable, Allowance for Credit Loss			11,441
Charge offs			(3,168)
Recoveries			1,267
Net Charge offs			(1,901)
Provision for credit losses			(1,113)
Balance at end of period			11,441
Allowance for credit losses on loans
Charge offs			3,168
Recoveries			1,267
Net Charge offs			(1,901)
Allowance for Loan and Lease Losses [Roll Forward]
Net Charge offs			(1,901)
Allowance for Loan Losses [Member] | Other consumer
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Balance at beginning of period	11,441
Financing Receivable, Allowance for Credit Loss	11,104		11,441
Charge offs	(733)
Recoveries	282
Net Charge offs	(451)
Provision for credit losses	114
Balance at end of period	11,104		11,441
Allowance for credit losses on loans
Charge offs	733
Recoveries	282
Net Charge offs	(451)
Allowance for Loan and Lease Losses [Roll Forward]
Net Charge offs	(451)
Allowance for Loan Losses [Member] | Auto
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Balance at beginning of period	1,999	174	174
Financing Receivable, Allowance for Credit Loss	6,190		1,999
Charge offs	(23)		(22)
Recoveries	26		31
Net Charge offs	4		9
Provision for credit losses	4,188		1,816
Balance at end of period	6,190		1,999
Allowance for credit losses on loans
Charge offs	23		22
Recoveries	26		31
Net Charge offs	4		9
Allowance for Loan and Lease Losses [Roll Forward]
Net Charge offs	4		9
Allowance for Loan Losses [Member] | Total consumer
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Balance at beginning of period	68,239	76,475	76,475
Financing Receivable, Allowance for Credit Loss	67,727		68,239
Charge offs	(924)		(4,738)
Recoveries	1,079		4,993
Net Charge offs	155		256
Provision for credit losses	(667)		(8,492)
Balance at end of period	67,727		68,239
Allowance for credit losses on loans
Charge offs	924		4,738
Recoveries	1,079		4,993
Net Charge offs	155		256
Allowance for Loan and Lease Losses [Roll Forward]
Net Charge offs	155		256
SEC Schedule, 12-09, Reserve, Off-balance Sheet Activity [Member]
Off-Balance Sheet, Credit Loss, Liability [Roll Forward]
Balance at beginning of period	39,776	47,776	47,776
Off-Balance Sheet, Credit Loss, Liability	38,776		39,776
Provision for credit losses	(1,000)		(8,000)
Balance at end of period	38,776		39,776
SEC Schedule, 12-09, Reserve, Off-balance Sheet Activity [Member] | Asset-Based Lending
Off-Balance Sheet, Credit Loss, Liability [Roll Forward]
Balance at beginning of period	857	901	901
Off-Balance Sheet, Credit Loss, Liability	796		857
Provision for credit losses	(62)		(43)
Balance at end of period	796		857
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	17,601	21,411	21,411
Off-Balance Sheet, Credit Loss, Liability	14,907		17,601
Provision for credit losses	(2,694)		(3,809)
Balance at end of period	14,907		17,601
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	208	266	266
Off-Balance Sheet, Credit Loss, Liability	144		208
Provision for credit losses	(64)		(58)
Balance at end of period	144		208
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	18,667	22,577	22,577
Off-Balance Sheet, Credit Loss, Liability	15,847		18,667
Provision for credit losses	(2,820)		(3,911)
Balance at end of period	15,847		18,667
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	936	636	636
Off-Balance Sheet, Credit Loss, Liability	634		936
Provision for credit losses	(302)		300
Balance at end of period	634		936
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	15,586	18,887	18,887
Off-Balance Sheet, Credit Loss, Liability	18,001		15,586
Provision for credit losses	2,415		(3,301)
Balance at end of period	18,001		15,586
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	16,522	19,523	19,523
Off-Balance Sheet, Credit Loss, Liability	18,636		16,522
Provision for credit losses	2,114		(3,001)
Balance at end of period	18,636		16,522
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	35,189	42,101	42,101
Off-Balance Sheet, Credit Loss, Liability	34,482		35,189
Provision for credit losses	(707)		(6,912)
Balance at end of period	34,482		35,189
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	2,592	3,118	3,118
Off-Balance Sheet, Credit Loss, Liability	2,523		2,592
Provision for credit losses	(68)		(526)
Balance at end of period	2,523		2,592
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	1,995	2,557	2,557
Off-Balance Sheet, Credit Loss, Liability	1,770		1,995
Provision for credit losses	(225)		(563)
Balance at end of period	1,770		1,995
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	4,587	5,675	5,675
Off-Balance Sheet, Credit Loss, Liability	4,293		4,587
Provision for credit losses	(293)		(1,088)
Balance at end of period	4,293		4,587
Allowance for Loans Losses and Unfunded Commitments [Member]
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Charge offs	(2,028)		(40,652)
Recoveries	4,072		16,965
Net Charge offs	2,044		(23,687)
Allowance for credit losses on loans
Balance at beginning of period	319,791	431,478	431,478
Allowance for Credit Losses on Loans	317,835		319,791
Charge offs	2,028		40,652
Recoveries	4,072		16,965
Net Charge offs	2,044		(23,687)
Provision for credit losses	(4,000)		(88,000)
Balance at end of period	$ 317,835		$ 319,791
Percent of Loans	1.30%		1.32%
Allowance for Loan and Lease Losses [Roll Forward]
Net Charge offs	$ 2,044		$ (23,687)
Allowance for Loans Losses and Unfunded Commitments [Member] | PPP
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Charge offs	0		0
Recoveries	0		0
Net Charge offs	0		0
Allowance for credit losses on loans
Balance at beginning of period	51	531	531
Allowance for Credit Losses on Loans	11		51
Charge offs	0		0
Recoveries	0		0
Net Charge offs	0		0
Provision for credit losses	(39)		(480)
Balance at end of period	$ 11		$ 51
Percent of Loans	0.06%		0.08%
Allowance for Loan and Lease Losses [Roll Forward]
Net Charge offs	$ 0		$ 0
Allowance for Loans Losses and Unfunded Commitments [Member] | Asset-Based Lending
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Charge offs	0		0
Recoveries	0		412
Net Charge offs	0		412
Allowance for credit losses on loans
Balance at beginning of period	5,040	2,978	2,978
Allowance for Credit Losses on Loans	5,879		5,040
Charge offs	0		0
Recoveries	0		412
Net Charge offs	0		412
Provision for credit losses	839		1,649
Balance at end of period	$ 5,879		$ 5,040
Percent of Loans	2.54%		2.83%
Allowance for Loan and Lease Losses [Roll Forward]
Net Charge offs	$ 0		$ 412
Allowance for Loans Losses and Unfunded Commitments [Member] | Commercial and industrial
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Charge offs	(1,104)		(21,564)
Recoveries	2,958		8,152
Net Charge offs	1,854		(13,412)
Allowance for credit losses on loans
Balance at beginning of period	103,225	162,126	162,126
Allowance for Credit Losses on Loans	96,900		103,225
Charge offs	1,104		21,564
Recoveries	2,958		8,152
Net Charge offs	1,854		(13,412)
Provision for credit losses	(8,179)		(45,490)
Balance at end of period	$ 96,900		$ 103,225
Percent of Loans	1.20%		1.26%
Allowance for Loan and Lease Losses [Roll Forward]
Net Charge offs	$ 1,854		$ (13,412)
Allowance for Loans Losses and Unfunded Commitments [Member] | Commercial real estate — owner occupied
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Charge offs	0		0
Recoveries	3		120
Net Charge offs	3		120
Allowance for credit losses on loans
Balance at beginning of period	11,681	11,539	11,539
Allowance for Credit Losses on Loans	11,270		11,681
Charge offs	0		0
Recoveries	3		120
Net Charge offs	3		120
Provision for credit losses	(413)		22
Balance at end of period	$ 11,270		$ 11,681
Percent of Loans	1.16%		1.20%
Allowance for Loan and Lease Losses [Roll Forward]
Net Charge offs	$ 3		$ 120
Allowance for Loans Losses and Unfunded Commitments [Member] | Commercial and business lending
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Charge offs	(1,104)		(21,564)
Recoveries	2,961		8,684
Net Charge offs	1,857		(12,880)
Allowance for credit losses on loans
Balance at beginning of period	119,997	177,175	177,175
Allowance for Credit Losses on Loans	114,061		119,997
Charge offs	1,104		21,564
Recoveries	2,961		8,684
Net Charge offs	1,857		(12,880)
Provision for credit losses	(7,793)		(44,299)
Balance at end of period	$ 114,061		$ 119,997
Percent of Loans	1.22%		1.27%
Allowance for Loan and Lease Losses [Roll Forward]
Net Charge offs	$ 1,857		$ (12,880)
Allowance for Loans Losses and Unfunded Commitments [Member] | Commercial real estate — investor
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Charge offs	0		(14,346)
Recoveries	0		3,162
Net Charge offs	0		(11,184)
Allowance for credit losses on loans
Balance at beginning of period	73,739	94,071	94,071
Allowance for Credit Losses on Loans	73,995		73,739
Charge offs	0		14,346
Recoveries	0		3,162
Net Charge offs	0		(11,184)
Provision for credit losses	256		(9,148)
Balance at end of period	$ 73,995		$ 73,739
Percent of Loans	1.66%		1.68%
Allowance for Loan and Lease Losses [Roll Forward]
Net Charge offs	$ 0		$ (11,184)
Allowance for Loans Losses and Unfunded Commitments [Member] | Real estate construction
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Charge offs	0		(5)
Recoveries	32		126
Net Charge offs	32		121
Allowance for credit losses on loans
Balance at beginning of period	53,229	78,080	78,080
Allowance for Credit Losses on Loans	57,758		53,229
Charge offs	0		5
Recoveries	32		126
Net Charge offs	32		121
Provision for credit losses	4,497		(24,972)
Balance at end of period	$ 57,758		$ 53,229
Percent of Loans	3.28%		2.94%
Allowance for Loan and Lease Losses [Roll Forward]
Net Charge offs	$ 32		$ 121
Allowance for Loans Losses and Unfunded Commitments [Member] | Commercial real estate lending
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Charge offs	0		(14,351)
Recoveries	32		3,288
Net Charge offs	32		(11,063)
Allowance for credit losses on loans
Balance at beginning of period	126,968	172,152	172,152
Allowance for Credit Losses on Loans	131,754		126,968
Charge offs	0		14,351
Recoveries	32		3,288
Net Charge offs	32		(11,063)
Provision for credit losses	4,754		(34,121)
Balance at end of period	$ 131,754		$ 126,968
Percent of Loans	2.12%		2.05%
Allowance for Loan and Lease Losses [Roll Forward]
Net Charge offs	$ 32		$ (11,063)
Allowance for Loans Losses and Unfunded Commitments [Member] | Total commercial
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Charge offs	(1,104)		(35,915)
Recoveries	2,993		11,972
Net Charge offs	1,889		(23,943)
Allowance for credit losses on loans
Balance at beginning of period	246,965	349,327	349,327
Allowance for Credit Losses on Loans	245,814		246,965
Charge offs	1,104		35,915
Recoveries	2,993		11,972
Net Charge offs	1,889		(23,943)
Provision for credit losses	(3,039)		(78,419)
Balance at end of period	$ 245,814		$ 246,965
Percent of Loans	1.58%		1.58%
Allowance for Loan and Lease Losses [Roll Forward]
Net Charge offs	$ 1,889		$ (23,943)
Allowance for Loans Losses and Unfunded Commitments [Member] | Residential mortgage
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Charge offs	(43)		(880)
Recoveries	331		841
Net Charge offs	288		(38)
Allowance for credit losses on loans
Balance at beginning of period	40,787	42,996	42,996
Allowance for Credit Losses on Loans	37,101		40,787
Charge offs	43		880
Recoveries	331		841
Net Charge offs	288		(38)
Provision for credit losses	(3,974)		(2,170)
Balance at end of period	$ 37,101		$ 40,787
Percent of Loans	0.49%		0.54%
Allowance for Loan and Lease Losses [Roll Forward]
Net Charge offs	$ 288		$ (38)
Allowance for Loans Losses and Unfunded Commitments [Member] | Home equity
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Charge offs	(125)		(668)
Recoveries	440		2,854
Net Charge offs	315		2,186
Allowance for credit losses on loans
Balance at beginning of period	16,603	21,967	21,967
Allowance for Credit Losses on Loans	15,855		16,603
Charge offs	125		668
Recoveries	440		2,854
Net Charge offs	315		2,186
Provision for credit losses	(1,063)		(7,550)
Balance at end of period	$ 15,855		$ 16,603
Percent of Loans	2.73%		2.79%
Allowance for Loan and Lease Losses [Roll Forward]
Net Charge offs	$ 315		$ 2,186
Allowance for Loans Losses and Unfunded Commitments [Member] | Other consumer
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Charge offs			(3,168)
Recoveries			1,267
Net Charge offs			(1,901)
Allowance for credit losses on loans
Balance at beginning of period	13,436	17,013	17,013
Allowance for Credit Losses on Loans			13,436
Charge offs			3,168
Recoveries			1,267
Net Charge offs			(1,901)
Provision for credit losses			(1,676)
Balance at end of period			$ 13,436
Percent of Loans			4.45%
Allowance for Loan and Lease Losses [Roll Forward]
Net Charge offs			$ (1,901)
Allowance for Loans Losses and Unfunded Commitments [Member] | Other consumer
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Charge offs	(733)
Recoveries	282
Net Charge offs	(451)
Allowance for credit losses on loans
Balance at beginning of period	13,436
Allowance for Credit Losses on Loans	12,874		13,436
Charge offs	733
Recoveries	282
Net Charge offs	(451)
Provision for credit losses	(111)
Balance at end of period	$ 12,874		13,436
Percent of Loans	4.44%
Allowance for Loan and Lease Losses [Roll Forward]
Net Charge offs	$ (451)
Allowance for Loans Losses and Unfunded Commitments [Member] | Auto
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Charge offs	(23)		(22)
Recoveries	26		31
Net Charge offs	4		9
Allowance for credit losses on loans
Balance at beginning of period	1,999	174	174
Allowance for Credit Losses on Loans	6,190		1,999
Charge offs	23		22
Recoveries	26		31
Net Charge offs	4		9
Provision for credit losses	4,188		1,816
Balance at end of period	$ 6,190		$ 1,999
Percent of Loans	1.24%		1.40%
Allowance for Loan and Lease Losses [Roll Forward]
Net Charge offs	$ 4		$ 9
Allowance for Loans Losses and Unfunded Commitments [Member] | Total consumer
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Charge offs	(924)		(4,738)
Recoveries	1,079		4,993
Net Charge offs	155		256
Allowance for credit losses on loans
Balance at beginning of period	72,825	$ 82,150	82,150
Allowance for Credit Losses on Loans	72,020		72,825
Charge offs	924		4,738
Recoveries	1,079		4,993
Net Charge offs	155		256
Provision for credit losses	(961)		(9,581)
Balance at end of period	$ 72,020		$ 72,825
Percent of Loans	0.80%		0.85%
Allowance for Loan and Lease Losses [Roll Forward]
Net Charge offs	$ 155		$ 256

Loans Narrative (Details)

Loans Narrative (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021	Dec. 31, 2021
Loans Information [Line Items]
Interest receivable	$ 83,120		$ 80,528
Financing Receivable, Nonaccrual, Interest Income	95	$ 98
Financing Receivable, Troubled Debt Restructuring, Premodification	6,603	$ 6,025
Restructured Loans Subsequently Accruing	1,000
Ytd Restructured Loans Still On Nonaccrual	6,000
Loans and Finance Receivables [Member]
Loans Information [Line Items]
Interest receivable	58,000		55,000
Possible Liquidity Issues [Member]
Loans Information [Line Items]
Financing Receivable, Troubled Debt Restructuring, Premodification	$ 0
Financing Receivable, Troubled Debt Restructuring			$ 7,000

Goodwill and Other Intangible_3

Goodwill and Other Intangible Assets, Summary of Core Deposit and Other Intangibles (Details) - USD ($) $ in Thousands	3 Months Ended		12 Months Ended
	Mar. 31, 2022	Mar. 31, 2021	Dec. 31, 2021	Dec. 31, 2020
Summary of core deposit intangibles and other intangibles
Other intangible amortization	$ 2,203	$ 2,236
Core Deposit Intangibles
Summary of core deposit intangibles and other intangibles
Gross carrying amount at the beginning of period			$ 88,109	$ 88,109
Accumulated amortization	(32,219)		(30,016)
Net book value	55,890		58,093
Other intangible amortization	2,203		8,811
Other Intangibles
Summary of core deposit intangibles and other intangibles
Gross carrying amount at the beginning of period			0	$ 2,000
Accumulated amortization	0		(683)
Net book value	0		0
Other intangible amortization	0		33
Other Intangibles | Disposal Group, Disposed of by Sale, Not Discontinued Operations [Member]
Summary of core deposit intangibles and other intangibles
Reductions due to sale	$ 0		$ (1,317)

Goodwill and Other Intangible_4

Goodwill and Other Intangible Assets, Mortgage Servicing Rights Roll-Forward (Details) - USD ($) $ in Thousands	3 Months Ended		12 Months Ended
	Mar. 31, 2022	Mar. 31, 2021	Dec. 31, 2021
Summary Of Changes In Balance Of Mortgage Servicing Rights Asset And Mortgage Servicing Rights Valuation Allowance [Abstract]
Servicing Asset at Amortized Cost			$ 56,682
Cumulative effect of accounting methodology change			2,296
Servicing Asset at Fair Value, Amount	$ 67,015		57,158
Servicing Asset at Fair Value, Additions	3,042	$ 3,348
Servicing Asset at Fair Value, Disposals	(2,637)
Servicing Asset at Fair Value, Changes in Fair Value Resulting from Changes in Valuation Inputs or Changes in Assumptions	2,345
Servicing Asset at Fair Value, Other Changes in Fair Value	7,106
Mortgage servicing rights
Mortgage servicing rights at beginning of period	56,682	59,967	59,967
Additions			16,151
Amortization			(19,436)
Mortgage servicing rights at end of period			56,682
Valuation Allowance for Impairment of Recognized Servicing Assets [Roll Forward]
Valuation allowance at beginning of period	(1,820)	$ (18,006)	(18,006)
(Additions) recoveries, net			16,186
Valuation allowance at end of period			(1,820)
Mortgage servicing rights, net(a)	67,015		54,862
Fair value of mortgage servicing rights			57,259
Portfolio of residential mortgage loans serviced for others (“servicing portfolio”)	$ 6,972,242		$ 6,994,834
Mortgage servicing rights, net to servicing portfolio	0.96%		0.78%
Mortgage servicing rights expense(a)			$ 3,250

Goodwill and Other Intangible_5

Goodwill and Other Intangible Assets, Estimated Future Amortization Expense (Details) - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
Core Deposit Intangibles
Estimated future amortization expense
Nine months ended December 31, 2022	$ 6,608
2023	8,811
2024	8,811
2025	8,811
2026	8,811
2027	8,811
Beyond 2027	5,227
Net book value	55,890	$ 58,093
Other Intangibles
Estimated future amortization expense
Net book value	0	$ 0
Mortgage Servicing Rights
Estimated future amortization expense
Nine months ended December 31, 2022	8,956
2023	11,320
2024	9,663
2025	8,227
2026	6,874
2027	5,913
Beyond 2027	16,062
Net book value	$ 67,015

Goodwill and Other Intangible_6

Goodwill and Other Intangible Assets (Details Textuals) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2022	Dec. 31, 2021
Goodwill and Intangible Assets Disclosure [Abstract]
Valuation Allowance for Impairment of Recognized Servicing Assets, Additions (Deductions) for Expenses (Recoveries)		$ (16,186)
Goodwill [Line Items]
Goodwill	$ 1,104,992	1,104,992
Other Intangibles | Disposal Group, Disposed of by Sale, Not Discontinued Operations [Member]
Goodwill [Line Items]
Decrease of other intangible assets	$ 0	$ 1,317

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	Mar. 31, 2022	Dec. 31, 2021
Short-term Funding [Abstract]
Federal funds purchased	$ 100,060	$ 120
Securities sold under agreements to repurchase	268,708	319,412
Federal funds purchased and securities sold under agreements to repurchase	368,768	319,532
Commercial paper	30,593	34,730
Total short-term funding	399,361	354,262
Long-Term Funding
Corporation subordinated notes, at par, due 2025	250,000	250,000
Other Long-term Debt and Capitalized Costs	(765)	(839)
Finance lease liability	562	163
Long-term Debt	249,797	249,324
TotalShortTermLongTermExcludingFHLB	649,158	603,587
FHLB Advances
Short-term FHLB advances	320,000	0
Long-term FHLB advances	1,217,948	1,621,047
FHLB advances	1,537,948	1,621,047
Total short and long-term funding	$ 2,187,106	$ 2,224,633

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	Mar. 31, 2022	Dec. 31, 2021
Agency mortgage-related securities | Maturity Overnight and on Demand [Member]
RemainingContractualMaturityoftheSecuritiesSoldUnderAgreementtoRepurchase [Line Items]
Repurchase agreements	$ 268,708	$ 319,412

Short and Long-Term Funding (Lo

Short and Long-Term Funding (Long-term Funding Narrative) (Details) - USD ($) $ in Thousands	1 Months Ended	3 Months Ended
	Nov. 30, 2014	Mar. 31, 2022
Long-Term Funding
FHLB advances prepayment		$ 400,000
FHLB Advances Prepayment - Prepayment Cost		$ 0
Fair Value of Pledged Securites to Securities Sold under Agreements to Repurchase		129.00%
Two Thousand Fourteen Subordinated Notes
Long-Term Funding
Debt Instrument, Issuance Date Month, Year	November 2014
Junior Subordinated Debentures Issued	$ 250,000
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	Mar. 31, 2022	Dec. 31, 2021
Fair Value, Inputs, Level 3
Derivative Instruments Not Designated as Hedging Instruments [Abstract]
Notional Amount	$ 5,000
Derivative Asset	4,796	$ 30
Derivatives (trading liabilities)	234	0
Fair Value, Inputs, Level 3 | Interest Rate Lock Commitments and Forward Commitments Total | Fair Value, Measurements, Recurring
Derivative Instruments Not Designated as Hedging Instruments [Abstract]
Derivative Asset	4,796	2,647
Fair Value, Inputs, Level 3 | Mortgage banking(a)(b) | Fair Value, Measurements, Recurring
Derivative Instruments Not Designated as Hedging Instruments [Abstract]
Derivative Asset	0	2,617
Derivatives (trading liabilities)	224	0
Fair Value, Inputs, Level 2 | Interest rate-related instruments — customer and mirror | Fair Value, Measurements, Recurring
Derivative Instruments Not Designated as Hedging Instruments [Abstract]
Derivative Asset	31,728	83,626
Derivatives (trading liabilities)	112,029	26,231
Fair Value, Inputs, Level 2 | Interest rate lock commitments (mortgage) | Fair Value, Measurements, Recurring
Derivative Instruments Not Designated as Hedging Instruments [Abstract]
Derivative Asset	1,986	5,490
Derivatives (trading liabilities)	1,815	5,441
Fair Value, Inputs, Level 2 | Commodity contracts | Fair Value, Measurements, Recurring
Derivative Instruments Not Designated as Hedging Instruments [Abstract]
Derivative Asset	0	1,264
Derivatives (trading liabilities)	0	1,248
Asset
Derivative Instruments Not Designated as Hedging Instruments [Abstract]
Derivatives (trading and other assets), fair value	38,511	93,026
Less: Legally enforceable master netting agreements	2,514	2,143
Less: Cash collateral pledged/received	7,816	1,313
Derivative Asset	28,181	89,570
Liability
Derivative Instruments Not Designated as Hedging Instruments [Abstract]
Derivatives (trading and other liabilities), fair value	114,078	32,921
Less: Legally enforceable master netting agreements	2,514	2,143
Less: Cash collateral pledged/received	987	11,357
Derivatives (trading liabilities)	110,577	19,421
Not designated as hedging instruments | Asset | Interest rate-related instruments — customer and mirror
Derivative Instruments Not Designated as Hedging Instruments [Abstract]
Notional Amount	4,090,770	3,874,781
Not designated as hedging instruments | Asset | Interest rate lock commitments (mortgage)
Derivative Instruments Not Designated as Hedging Instruments [Abstract]
Notional Amount	506,185	490,057
Not designated as hedging instruments | Asset | Commodity contracts
Derivative Instruments Not Designated as Hedging Instruments [Abstract]
Notional Amount	0	3,894
Not designated as hedging instruments | Asset | Mortgage banking(a)(b)
Derivative Instruments Not Designated as Hedging Instruments [Abstract]
Notional Amount	114,909	133,990
Not designated as hedging instruments | Liability | Interest rate-related instruments — customer and mirror
Derivative Instruments Not Designated as Hedging Instruments [Abstract]
Notional Amount	4,130,770	3,874,781
Not designated as hedging instruments | Liability | Interest rate lock commitments (mortgage)
Derivative Instruments Not Designated as Hedging Instruments [Abstract]
Notional Amount	501,213	478,745
Not designated as hedging instruments | Liability | Commodity contracts
Derivative Instruments Not Designated as Hedging Instruments [Abstract]
Notional Amount	0	3,910
Not designated as hedging instruments | Liability | Mortgage banking(a)(b)
Derivative Instruments Not Designated as Hedging Instruments [Abstract]
Notional Amount	$ 197,000	$ 245,016

Derivative and Hedging Activi_4

Derivative and Hedging Activities Income impact of Fair Value and Cash Flow Hedge (Details) - Interest Income - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Change in Unrealized Gain (Loss) on Hedged Item in Fair Value Hedge	$ (179)	$ (485)
Not Designated as Hedging Instrument, Economic Hedge [Member]
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Change in Unrealized Gain (Loss) on Hedged Item in Fair Value Hedge	$ (179)	$ (485)

Derivative and Hedging Activi_5

Derivative and Hedging Activities Derivative Impact on Perfomance (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Capital markets, net | Interest rate-related instruments — customer and mirror, net
Derivative Instruments
Derivative Instruments Not Designated as Hedging Instruments, Gain (Loss), Net	$ 573	$ 2,938
Capital markets, net | Foreign currency exchange forwards
Derivative Instruments
Derivative Instruments Not Designated as Hedging Instruments, Gain (Loss), Net	123	143
Capital markets, net | Commodity contracts
Derivative Instruments
Derivative Instruments Not Designated as Hedging Instruments, Gain (Loss), Net	(16)	(621)
Mortgage banking, net | Interest Rate-Related Instruments - MSRs Hedge
Derivative Instruments
Derivative Instruments Not Designated as Hedging Instruments, Gain (Loss), Net	(3,666)	0
Mortgage banking, net | Interest rate lock commitments (mortgage)
Derivative Instruments
Derivative Instruments Not Designated as Hedging Instruments, Gain (Loss), Net	(2,842)	(2,708)
Mortgage banking, net | Forward commitments (mortgage)
Derivative Instruments
Derivative Instruments Not Designated as Hedging Instruments, Gain (Loss), Net	$ (4,757)	$ (6,300)

Derivative and Hedging Activi_6

Derivative and Hedging Activities (Details Textuals) - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021	Dec. 31, 2019
Balance Sheet Recording of Fair Value Hedge [Line Items]
Additional Collateral, Aggregate Fair Value	$ 76,000	$ 71,000
Derivative collateral right to reclaim cash	6,000	11,000
Fair Value, Inputs, Level 3
Balance Sheet Recording of Fair Value Hedge [Line Items]
Notional Amount	5,000
Derivatives (trading liabilities)	234	0
Derivative Asset	4,796	30
Fair Value, Inputs, Level 3 | Mortgage banking(a)(b) | Fair Value, Measurements, Recurring
Balance Sheet Recording of Fair Value Hedge [Line Items]
Derivatives (trading liabilities)	224	0
Derivative Asset	0	$ 2,617
Designated as Hedging Instrument
Balance Sheet Recording of Fair Value Hedge [Line Items]
Derivative Liability Notional Amount, Terminated			$ 500,000
Underlying Hedged Asset, Amortized Cost Basis	390,000
Deferred (Gain) Loss on Discontinuation of Fair Value Hedge	$ 2,000

Balance Sheet Offsetting (Detai

Balance Sheet Offsetting (Details) - Interest Rate Contract - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
Derivative assets
Gross Amounts Recognized	$ 15,021	$ 3,567
Derivative Liabilities Offset	(2,514)	(2,143)
Derivative Asset, Collateral, Obligation to Return Cash, Offset	(7,816)	(1,313)
Net Amounts Presented on the Consolidated Balance Sheets	4,691	111
Derivative liabilities
Gross Amounts Recognized	3,535	15,620
Derivative Liability, Fair Value, Gross Asset	(2,514)	(2,143)
Derivative Liability, Collateral, Right to Reclaim Cash, Offset	(987)	(11,357)
Net Amounts Presented on the Consolidated Balance Sheets	$ 34	$ 2,120

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	Mar. 31, 2022	Dec. 31, 2021
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	10,973,357	10,848,136
Commercial letters of credit(a)
Summary of lending-related and other commitments
Lending related commitments	9,827	5,992
Standby letters of credit(c)
Summary of lending-related and other commitments
Lending related commitments	$ 257,039	$ 248,292

Commitment, Changes in the Allo

Commitment, Changes in the Allowance for Unfunded Commitments (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2022	Dec. 31, 2021
Off-Balance Sheet, Credit Loss, Liability [Roll Forward]
Balance at beginning of period	$ 39,776	$ 47,776
Off-Balance Sheet, Credit Loss, Liability	38,776	39,776
Provision for credit losses	(1,000)	(8,000)
Balance at end of period	$ 38,776	$ 39,776

Commitments, Off-Balance Shee_4

Commitments, Off-Balance Sheet Arrangements, Legal Proceedings and Regulatory Matters (Details Textuals) - USD ($)	3 Months Ended	12 Months Ended
	Mar. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Commitments, Off-Balance Sheet Arrangements, and Contingent Liabilities (Textuals) [Line Items]
Off-Balance Sheet, Credit Loss, Liability	$ 38,776,000	$ 39,776,000	$ 47,776,000
Provision for credit losses	(1,000,000)	(8,000,000)
Expense Related to Qualified Affordable Housing Projects	8,000,000
Remaining Investment in Qualified Affordable Housing Projects	253,000,000	262,000,000
Variable Interest Entity Reporting Entity Involvement Unfunded Obligation Amount	69,000,000	80,000,000
Qualified Affordable Housing Investments, Impairment Loss	0	0
Loans Repurchased Under Make Whole Requests	$ 2,000,000	$ 8,000,000
Loans Sold To Outside Investors Loss ReimbursementSettlement Paid	no	114,000
Loans Sold To Outside Investors Original Amount	$ 7,200,000,000
Loans Sold To Outside Investors Remaining Outstanding Amount	4,600,000,000
Mortgage Repurchase Reserve	1,000,000
Residential Mortgage Loans Sold With Recourse Risk	8,000,000	$ 10,000,000
Residential Mortgage Loans Sold With Credit Recourse Risk	23,000,000	24,000,000
Residential Mortgage Loans with Credit Risk Recourse	0
UnconsolidatedProjectsLowIncomeHousing [Member]
Commitments, Off-Balance Sheet Arrangements, and Contingent Liabilities (Textuals) [Line Items]
Other Investments	259,000,000	$ 268,000,000
PrincipalInvestmentCommitment [Member]
Commitments, Off-Balance Sheet Arrangements, and Contingent Liabilities (Textuals) [Line Items]
Other Investments	$ 25,000,000

Fair Value Measurements, Assets

Fair Value Measurements, Assets and Liabilities Measured at Fair Value on a Recurring Basis (Details) - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
Assets, Fair Value Disclosure [Abstract]
Debt Securities, Available-for-sale		$ 4,332,015
Servicing Asset at Fair Value, Amount	$ 67,015	57,158
Fair Value, Inputs, Level 1
Assets, Fair Value Disclosure [Abstract]
Debt Securities, Available-for-sale	116,132	122,957
Fair Value, Inputs, Level 2
Assets, Fair Value Disclosure [Abstract]
Debt Securities, Available-for-sale	2,664,671	4,209,058
Fair Value, Inputs, Level 3
Assets, Fair Value Disclosure [Abstract]
Trading assets	4,796	30
Servicing Asset at Fair Value, Amount	67,015	57,259
Liabilities, Fair Value Disclosure [Abstract]
Trading liabilities	234	0
Fair Value, Inputs, Level 3 | Forward commitments (mortgage)
Assets, Fair Value Disclosure [Abstract]
Trading assets	4,796	30
Liabilities, Fair Value Disclosure [Abstract]
Trading liabilities	9	0
Derivatives (trading and other liabilities), fair value	9	0
Fair Value, Measurements, Recurring | Fair Value, Inputs, Level 1 | Available-for-sale Securities [Member]
Assets, Fair Value Disclosure [Abstract]
Debt Securities, Available-for-sale	116,132	122,957
Fair Value, Measurements, Recurring | Fair Value, Inputs, Level 1 | Other Debt And Other Equity Securities
Assets, Fair Value Disclosure [Abstract]
Debt Securities, Available-for-sale	5,025	4,810
Fair Value, Measurements, Recurring | Fair Value, Inputs, Level 2 | Federal Family Education Loan Program (FFELP) Guaranteed Loans [Member]
Assets, Fair Value Disclosure [Abstract]
Debt Securities, Available-for-sale	168,978	177,325
Fair Value, Measurements, Recurring | Fair Value, Inputs, Level 2 | US Government-sponsored Enterprises Debt Securities [Member]
Assets, Fair Value Disclosure [Abstract]
Debt Securities, Available-for-sale	5,845	6,580
Fair Value, Measurements, Recurring | Fair Value, Inputs, Level 2 | Other Debt securities
Assets, Fair Value Disclosure [Abstract]
Debt Securities, Available-for-sale	2,973	2,994
Fair Value, Measurements, Recurring | Fair Value, Inputs, Level 2 | Available-for-sale Securities [Member]
Assets, Fair Value Disclosure [Abstract]
Debt Securities, Available-for-sale	2,664,671	4,209,058
Fair Value, Measurements, Recurring | Fair Value, Inputs, Level 2 | Residential loans held for sale
Assets, Fair Value Disclosure [Abstract]
Trading assets	91,582	136,638
Fair Value, Measurements, Recurring | Fair Value, Inputs, Level 2 | Interest rate-related instruments — customer and mirror, net
Assets, Fair Value Disclosure [Abstract]
Trading assets	31,728	83,626
Liabilities, Fair Value Disclosure [Abstract]
Trading liabilities	112,029	26,231
Fair Value, Measurements, Recurring | Fair Value, Inputs, Level 2 | Foreign currency exchange forwards
Assets, Fair Value Disclosure [Abstract]
Trading assets	1,986	5,490
Liabilities, Fair Value Disclosure [Abstract]
Trading liabilities	1,815	5,441
Fair Value, Measurements, Recurring | Fair Value, Inputs, Level 2 | Commodity contracts
Assets, Fair Value Disclosure [Abstract]
Trading assets	0	1,264
Liabilities, Fair Value Disclosure [Abstract]
Trading liabilities	0	1,248
Fair Value, Measurements, Recurring | Fair Value, Inputs, Level 3 | Mortgage banking(a)(b)
Assets, Fair Value Disclosure [Abstract]
Trading assets	0	2,617
Liabilities, Fair Value Disclosure [Abstract]
Trading liabilities	224	0
Fair Value, Measurements, Recurring | Fair Value, Inputs, Level 3 | Interest Rate Lock Commitments and Forward Commitments Total
Assets, Fair Value Disclosure [Abstract]
Trading assets	4,796	2,647
FNMA / FHLMC | Fair Value, Measurements, Recurring | Fair Value, Inputs, Level 2 | Commercial mortgage-related securities
Assets, Fair Value Disclosure [Abstract]
Debt Securities, Available-for-sale	19,786	350,623
FNMA / FHLMC | Fair Value, Measurements, Recurring | Fair Value, Inputs, Level 2 | Residential Related Securities
Assets, Fair Value Disclosure [Abstract]
Debt Securities, Available-for-sale	1,894,819	2,691,879
Government National Mortgage Association (GNMA) [Member] | Fair Value, Measurements, Recurring | Fair Value, Inputs, Level 2 | Commercial mortgage-related securities
Assets, Fair Value Disclosure [Abstract]
Debt Securities, Available-for-sale	126,760	166,799
Government National Mortgage Association (GNMA) [Member] | Fair Value, Measurements, Recurring | Fair Value, Inputs, Level 2 | Residential Related Securities
Assets, Fair Value Disclosure [Abstract]
Debt Securities, Available-for-sale	58,909	67,780
US Treasury Securities | Fair Value, Measurements, Recurring | Fair Value, Inputs, Level 1
Assets, Fair Value Disclosure [Abstract]
Debt Securities, Available-for-sale	116,132	122,957
US Treasury Securities | Fair Value, Measurements, Recurring | Fair Value, Inputs, Level 2
Assets, Fair Value Disclosure [Abstract]
Debt Securities, Available-for-sale		122,957
Agency Securities | Fair Value, Measurements, Recurring | Fair Value, Inputs, Level 2
Assets, Fair Value Disclosure [Abstract]
Debt Securities, Available-for-sale	14,200	14,897
US States and Political Subdivisions Debt Securities [Member] | Fair Value, Measurements, Recurring | Fair Value, Inputs, Level 2
Assets, Fair Value Disclosure [Abstract]
Debt Securities, Available-for-sale	372,401	400,457
US Government-sponsored Enterprises Debt Securities [Member]
Assets, Fair Value Disclosure [Abstract]
Debt Securities, Available-for-sale	5,845
Mortgage-backed Securities, Issued by Private Enterprises [Member]
Assets, Fair Value Disclosure [Abstract]
Debt Securities, Available-for-sale	0	329,724
Mortgage-backed Securities, Issued by Private Enterprises [Member] | Fair Value, Measurements, Recurring | Fair Value, Inputs, Level 2
Assets, Fair Value Disclosure [Abstract]
Debt Securities, Available-for-sale	$ 0	$ 329,724

Fair Value Measurements Financi

Fair Value Measurements Financial Instruments Classified Within Level 3 (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2022	Dec. 31, 2021
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	$ 2,617	$ 9,624
New production	5,002	53,686
Closed loans / settlements	(455)	(53,477)
Other	(7,389)	(7,216)
Mortgage derivative (loss)	(2,842)	(7,007)
Ending Balance	(224)	2,617
Forward commitments on residential mortgage loans and TBA securities
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward]
Beginning Balance	(30)	2,046
New production	(887)	(3,281)
Closed loans / settlements	9,099	3,740
Other	(12,969)	(2,535)
Mortgage derivative (loss)	(4,757)	(2,076)
Ending Balance	(4,787)	(30)
Total derivatives
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward]
Beginning Balance	2,647	7,579
New production	5,890	56,966
Closed loans / settlements	(9,554)	(57,217)
Other	5,580	(4,680)
Mortgage derivative (loss)	1,916	(4,932)
Ending Balance	$ 4,563	$ 2,647

Fair Value Measurements Equity

Fair Value Measurements Equity Securities Without Readily Determinable Fair Values (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2022USD ($)
Equity Securities Without Readily Determinable Fair Value Amount [Roll Forward]
Carrying value as of December 31, 2021	$ 14,000
Additions	1
Equity Securities without Readily Determinable Fair Value, Sales, Annual Amount	(8)
Carrying value as of March 31, 2022	14,000
Fair Value, Inputs, Level 3
Equity Securities Without Readily Determinable Fair Value Amount [Roll Forward]
Carrying value as of December 31, 2021	13,542
Carrying value as of March 31, 2022	13,535
Cumulative upward carrying value changes between January 1, 2018 and March 31, 2022	13,444
Cumulative downward carrying value changes/impairment between January 1, 2018 and March 31, 2022	$ 0

Fair Value Measurements, Asse_2

Fair Value Measurements, Assets and Liabilities Measured at Fair Value on a Nonrecurring Basis (Details) - USD ($) $ in Thousands	3 Months Ended		12 Months Ended
	Mar. 31, 2022	Mar. 31, 2021	Dec. 31, 2021
Assets and Liabilities Measured at Fair Value on a Non-recurring Basis
Mortgage Servicing Rights (MSR) Impairment (Recovery)	$ (9,451)	$ (10,578)
Mortgage servicing rights(e)			$ 57,259
Equity securities	14,000		14,000
Investment securities gains (losses), net	18,560		18,352
Fair Value, Inputs, Level 3
Assets and Liabilities Measured at Fair Value on a Non-recurring Basis
Equity securities	13,535		13,542
Investment securities gains (losses), net	13,535		13,542
Fair Value, Nonrecurring [Member] | Fair Value, Inputs, Level 2
Assets and Liabilities Measured at Fair Value on a Non-recurring Basis
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Write-down or Reserve, Amount	102		7,345
OREO(b)	985		21,299
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)	43,882		69,917
Provision for credit losses	$ (397)		(3,045)
Mortgage Servicing Rights (MSR) Impairment (Recovery)			16,186
Mortgage servicing rights(e)			$ 57,259

Fair Value Measurements Fair Va

Fair Value Measurements Fair Value Unobservable Level 3 Measurements (Details) - Fair Value, Inputs, Level 3 - Appraisals/Discounted Cash Flow - Impaired Finance Receivable	3 Months Ended
	Mar. 31, 2022
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	21.00%
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	21.00%
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	21.00%

Fair Value Measurements, Fair V

Fair Value Measurements, Fair Value of Financial Instruments (Details) - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
Financial assets
Cash and due from banks	$ 334,138	$ 343,831
Interest-bearing deposits in other financial institutions	166,929	681,684
Available-for-sale Securities		4,332,015
Debt Securities, Held-to-Maturity, Amortized Cost, before Allowance for Credit Loss	3,939,920	2,239,003
Investment securities held to maturity, fair value	3,764,901	2,348,664
Equity securities with readily determinable fair values, Fair Value	5,000	5,000
Equity Securities without Readily Determinable Fair Value, Amount	14,000	14,000
Investment securities gains (losses), net	18,560	18,352
FHLB and Federal Reserve Bank stocks	168,281	168,281
Residential loans held for sale	91,582	136,638
Loans, net	24,252,867	23,944,934
Bank owned life insurance, fair value	679,538	680,021
Servicing Asset at Fair Value, Amount	67,015	57,158
Financial liabilities
Short-term funding	399,361	354,262
Other long-term funding	249,797	249,324
FHLB advances	1,537,948	1,621,047
Letters of Credit Outstanding, Amount	257,000	248,000
US Treasury Securities
Financial assets
Debt Securities, Held-to-Maturity, Amortized Cost, before Allowance for Credit Loss	998	1,000
Investment securities held to maturity, fair value	964	1,001
Fair Value, Inputs, Level 1
Financial assets
Available-for-sale Securities	116,132	122,957
Equity securities with readily determinable fair value, Carrying Amount	5,025	4,810
Equity securities with readily determinable fair values, Fair Value	5,025	4,810
Fair Value, Inputs, Level 1 | Fair Value, Measurements, Recurring | US Treasury Securities
Financial assets
Available-for-sale Securities	116,132	122,957
Fair Value, Inputs, Level 2
Financial assets
Available-for-sale Securities	2,664,671	4,209,058
Debt Securities, Held-to-Maturity, Amortized Cost, before Allowance for Credit Loss	3,938,857	2,237,947
Investment securities held to maturity, fair value	3,763,872	2,347,608
Financial liabilities
Brokered CDs and other time deposits	1,288,913	1,347,262
Brokered CDs and other time deposits, fair value	1,288,913	1,347,262
Short-term funding	399,361	354,262
Short-term funding, fair value	399,270	354,248
Long-term funding, fair value	254,355	265,545
Advances, Fair Value Disclosure	1,546,821	1,680,814
Other long-term funding	249,797	249,324
Standby letters of credit	2,473	2,367
Standby letters of credit, fair value	2,473	2,367
Fair Value, Inputs, Level 2 | Fair Value, Measurements, Recurring | US Treasury Securities
Financial assets
Available-for-sale Securities		122,957
Fair Value, Inputs, Level 2 | Other Assets [Member]
Financial assets
Derivative Asset	33,715	90,379
Derivatives (trading and other assets), fair value	33,715	90,379
Fair Value, Inputs, Level 2 | Other Liabilities [Member]
Financial liabilities
Derivatives (trading liabilities)	113,844	32,921
Derivatives (trading and other liabilities), fair value	113,844	32,921
Fair Value, Inputs, Level 3
Financial assets
Equity Securities without Readily Determinable Fair Value, Amount	13,535	13,542
Investment securities gains (losses), net	13,535	13,542
Loans, net, fair value	23,485,798	23,980,330
Servicing Asset at Fair Value, Amount	67,015	57,259
Servicing Asset	67,015	54,862
Derivative Asset	4,796	30
Financial liabilities
Noninterest-bearing demand, savings, interest-bearing demand, and money market accounts	27,116,495	27,119,167
Noninterest-bearing demand, savings, interest-bearing demand, and money market deposits, fair value	27,116,495	27,119,167
Derivatives (trading liabilities)	234	0
Fair Value, Inputs, Level 3 | Mortgage banking(a)(b) | Fair Value, Measurements, Recurring
Financial assets
Derivative Asset	0	2,617
Financial liabilities
Derivatives (trading liabilities)	224	0
Fair Value, Inputs, Level 3 | Interest Rate Lock Commitments and Forward Commitments Total | Fair Value, Measurements, Recurring
Financial assets
Derivative Asset	4,796	2,647
Fair Value, Inputs, Level 3 | Forward commitments (mortgage)
Financial assets
Derivative Asset	4,796	30
Financial liabilities
Derivatives (trading liabilities)	9	0
Derivatives (trading and other liabilities), fair value	$ 9	$ 0

Fair Value Measurements (Detail

Fair Value Measurements (Details Textuals)	3 Months Ended
	Mar. 31, 2022
Fair Value Measurements (Textuals) [Abstract]
Fair Value Inputs Closing Ratio	79.00%

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
	Mar. 31, 2022	Mar. 31, 2021
RAP
Net period benefit cost for the pension and postretirement plans
Service cost	$ 923	$ 2,075
Interest cost	1,772	1,623
Expected return on plan assets	(6,736)	(6,430)
Amortization of prior service cost	(63)	(18)
Amortization of actuarial loss	74	1,050
Total net periodic pension cost	(4,029)	(1,701)
Postretirement Plan
Net period benefit cost for the pension and postretirement plans
Interest cost	13	13
Amortization of prior service cost	(19)	(19)
Total net periodic pension cost	$ (6)	$ (6)

Retirement Plans (Details Textu

Retirement Plans (Details Textuals) (Details) - RAP - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Defined Benefit Plan, Description	The Corporation has a noncontributory defined benefit 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
	Mar. 31, 2022	Mar. 31, 2021
Segment Income Statement Data Abstract
Net interest income	$ 187,747	$ 175,902
Net intersegment interest income	0	0
Segment net interest income	187,747	175,902
Noninterest income(a)	74,467	95,343
Total revenue	262,214	271,245
Provision for credit losses	(3,990)	(23,004)
Noninterest expense	173,292	175,347
Income before income taxes	92,912	118,903
Income tax expense (benefit)	18,650	24,602
Net income	74,262	94,301
Segment Balance Sheet Data
Allocated goodwill	1,104,992	1,104,992
Operating Segments | Corporate and Commercial Specialty
Segment Income Statement Data Abstract
Net interest income	90,633	89,661
Net intersegment interest income	8,525	4,670
Segment net interest income	99,158	94,331
Noninterest income(a)	37,790	41,828
Total revenue	136,948	136,160
Provision for credit losses	12,653	16,680
Noninterest expense	56,559	55,448
Income before income taxes	67,736	64,032
Income tax expense (benefit)	12,313	11,891
Net income	55,423	52,141
Segment Balance Sheet Data
Allocated goodwill	525,836	525,836
Operating Segments | Community, Consumer, and Business
Segment Income Statement Data Abstract
Net interest income	69,544	71,775
Net intersegment interest income	18,833	14,889
Segment net interest income	88,377	86,664
Noninterest income(a)	33,207	47,331
Total revenue	121,584	133,995
Provision for credit losses	4,656	5,928
Noninterest expense	98,660	100,353
Income before income taxes	18,267	27,714
Income tax expense (benefit)	3,836	5,820
Net income	14,431	21,894
Segment Balance Sheet Data
Allocated goodwill	579,156	579,156
Operating Segments | Risk Management and Shared Services
Segment Income Statement Data Abstract
Net interest income	27,570	14,465
Net intersegment interest income	(27,358)	(19,559)
Segment net interest income	212	(5,094)
Noninterest income(a)	3,470	6,184
Total revenue	3,683	1,091
Provision for credit losses	(21,300)	(45,612)
Noninterest expense	18,073	19,546
Income before income taxes	6,909	27,156
Income tax expense (benefit)	2,501	6,890
Net income	4,409	20,266
Segment Balance Sheet Data
Allocated goodwill	$ 0	$ 0

Segment Reporting (Details Text

Segment Reporting (Details Textuals) $ in Millions	3 Months Ended
	Mar. 31, 2022USD ($)segment	Mar. 31, 2021USD ($)
Segment Reporting [Abstract]
Number of Reportable Segments | segment	3
Whitnell
Segment Reporting [Abstract]
Gain (Loss) on Sale and Maturity of Other Investments, Before Tax	$ 2	$ 2
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Gain (Loss) on Sale and Maturity of Other Investments, Before Tax	$ 2	$ 2

Accumulated Other Comprehensi_3

Accumulated Other Comprehensive Income (Loss) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Beginning Balance	$ (10,317)
Investment securities (gains), net	0	$ (75)
Net unrealized (losses) on AFS securities transferred to HTM securities	(67,604)	0
Personnel expense	(104,811)	(104,026)
Amortization of Net Unrealized Gain on Available-for-Sale Securities Transfered to Held-to-maturity Securities	(1,108)	(518)
Other comprehensive (loss)	(126,708)	(16,811)
Ending Balance	(137,024)
Investment Securities AFS
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Beginning Balance	(5,266)	41,325
Other comprehensive (loss) before reclassifications	(103,284)	(23,979)
Net unrealized (losses) on AFS securities transferred to HTM securities, prior to transfer	(67,604)
Investment securities (gains), net	(21)	39
Personnel expense	0	0
Other expense	0	0
Amortization of Net Unrealized Gain on Available-for-Sale Securities Transfered to Held-to-maturity Securities	1,108	518
Income tax benefit	43,098	5,851
Other comprehensive (loss)	(126,702)	(17,571)
Ending Balance	(131,968)	23,754
Defined Benefit Pension and Postretirement Obligations
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Beginning Balance	(5,051)	(28,707)
Other comprehensive (loss) before reclassifications	0	0
Net unrealized (losses) on AFS securities transferred to HTM securities, prior to transfer	0
Investment securities (gains), net	0	0
Personnel expense	(81)	(37)
Other expense	74	1,050
Amortization of Net Unrealized Gain on Available-for-Sale Securities Transfered to Held-to-maturity Securities	0	0
Income tax benefit	2	(253)
Other comprehensive (loss)	(6)	760
Ending Balance	(5,057)	(27,947)
Accumulated Other Comprehensive Income (Loss)
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Beginning Balance	(10,317)	12,618
Other comprehensive (loss) before reclassifications	(103,284)	(23,979)
Net unrealized (losses) on AFS securities transferred to HTM securities, prior to transfer	(67,604)
Investment securities (gains), net	(21)	39
Personnel expense	(81)	(37)
Other expense	74	1,050
Amortization of Net Unrealized Gain on Available-for-Sale Securities Transfered to Held-to-maturity Securities	1,108	518
Income tax benefit	43,100	5,598
Other comprehensive (loss)	(126,708)	(16,811)
Ending Balance	$ (137,024)	$ (4,193)

Revenue from Contracts with C_2

Revenue from Contracts with Customers (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Disaggregation of Revenue [Line Items]
Noninterest income (in-scope of Topic 606)	$ 52,344	$ 51,762
Noninterest income (out-of-scope of Topic 606)(b)	22,123	43,581
Total noninterest income	74,467	95,343
Whitnell
Disaggregation of Revenue [Line Items]
Gain (Loss) on Sale and Maturity of Other Investments, Before Tax	2,000	2,000
Wealth management fees
Disaggregation of Revenue [Line Items]
Noninterest income (in-scope of Topic 606)	22,404	22,414
Service charges and deposit account fees
Disaggregation of Revenue [Line Items]
Noninterest income (in-scope of Topic 606)	16,856	14,855
Card-based fees(a)
Disaggregation of Revenue [Line Items]
Noninterest income (in-scope of Topic 606)	9,949	9,764
Other revenue
Disaggregation of Revenue [Line Items]
Noninterest income (in-scope of Topic 606)	3,135	4,729
Corporate and Commercial Specialty
Disaggregation of Revenue [Line Items]
Noninterest income (in-scope of Topic 606)	27,840	27,365
Noninterest income (out-of-scope of Topic 606)(b)	9,950	14,464
Corporate and Commercial Specialty | Wealth management fees
Disaggregation of Revenue [Line Items]
Noninterest income (in-scope of Topic 606)	22,404	22,414
Corporate and Commercial Specialty | Service charges and deposit account fees
Disaggregation of Revenue [Line Items]
Noninterest income (in-scope of Topic 606)	3,784	3,941
Corporate and Commercial Specialty | Card-based fees(a)
Disaggregation of Revenue [Line Items]
Noninterest income (in-scope of Topic 606)	417	346
Corporate and Commercial Specialty | Other revenue
Disaggregation of Revenue [Line Items]
Noninterest income (in-scope of Topic 606)	1,235	664
Community, Consumer, and Business
Disaggregation of Revenue [Line Items]
Noninterest income (in-scope of Topic 606)	24,455	23,988
Noninterest income (out-of-scope of Topic 606)(b)	8,751	23,342
Community, Consumer, and Business | Service charges and deposit account fees
Disaggregation of Revenue [Line Items]
Noninterest income (in-scope of Topic 606)	13,069	10,900
Community, Consumer, and Business | Card-based fees(a)
Disaggregation of Revenue [Line Items]
Noninterest income (in-scope of Topic 606)	9,524	9,414
Community, Consumer, and Business | Other revenue
Disaggregation of Revenue [Line Items]
Noninterest income (in-scope of Topic 606)	1,862	3,674
Risk Management and Shared Services
Disaggregation of Revenue [Line Items]
Noninterest income (in-scope of Topic 606)	49	409
Noninterest income (out-of-scope of Topic 606)(b)	3,421	5,775
Risk Management and Shared Services | Service charges and deposit account fees
Disaggregation of Revenue [Line Items]
Noninterest income (in-scope of Topic 606)	3	15
Risk Management and Shared Services | Card-based fees(a)
Disaggregation of Revenue [Line Items]
Noninterest income (in-scope of Topic 606)	7	4
Risk Management and Shared Services | Other revenue
Disaggregation of Revenue [Line Items]
Noninterest income (in-scope of Topic 606)	38	391
Operating Segments [Member] | Corporate and Commercial Specialty
Disaggregation of Revenue [Line Items]
Total noninterest income	37,790	41,828
Operating Segments [Member] | Community, Consumer, and Business
Disaggregation of Revenue [Line Items]
Total noninterest income	33,207	47,331
Operating Segments [Member] | Risk Management and Shared Services
Disaggregation of Revenue [Line Items]
Total noninterest income	$ 3,470	$ 6,184

Leases Lease, Cost and Cash Flo

Leases Lease, Cost and Cash Flows (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Leases [Abstract]
Operating lease costs	$ 1,798	$ 2,240
Finance lease costs	41	39
Operating lease cash flows	2,407	2,963
Finance lease cash flows	$ 44	$ 40

Leases Components of Lease Expe

Leases Components of Lease Expense (Details) - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
Leases [Abstract]
Operating lease right-of-use asset	$ 28,354	$ 28,299
Finance lease right-of-use asset	545	143
Operating lease liability	31,585	31,345
Finance lease liability	$ 562	$ 163

Leases Operating Lease Informat

Leases Operating Lease Information (Details) - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
Lessee, Lease, Description [Line Items]
Total lease payments	$ 34,028	$ 34,751
Operating Lease, Weighted Average Remaining Lease Term	6 years 29 days	5 years 11 months 8 days
Operating Lease, Weighted Average Discount Rate, Percent	2.37%	3.22%
Finance Lease, Liability, Payment, Due	$ 583	$ 164
Finance Lease, Weighted Average Remaining Lease Term	5 years 8 months 12 days	1 year 25 days
Finance Lease, Weighted Average Discount Rate, Percent	1.31%	1.24%
Equipment
Lessee, Lease, Description [Line Items]
Total lease payments	$ 191	$ 192
Operating Lease, Weighted Average Remaining Lease Term	1 year 3 months	1 year 6 months
Operating Lease, Weighted Average Discount Rate, Percent	0.44%	0.45%
Retail and corporate offices
Lessee, Lease, Description [Line Items]
Total lease payments	$ 28,482	$ 29,008
Operating Lease, Weighted Average Remaining Lease Term	5 years 9 months 3 days	5 years 6 months 21 days
Operating Lease, Weighted Average Discount Rate, Percent	2.24%	3.26%
Finance Lease, Liability, Payment, Due	$ 553	$ 112
Finance Lease, Weighted Average Remaining Lease Term	6 years	1 year 3 months
Finance Lease, Weighted Average Discount Rate, Percent	1.32%	1.32%
Land
Lessee, Lease, Description [Line Items]
Total lease payments	$ 5,356	$ 5,551
Operating Lease, Weighted Average Remaining Lease Term	8 years 1 month 9 days	8 years 3 months 14 days
Operating Lease, Weighted Average Discount Rate, Percent	3.12%	3.12%
Finance Lease, Liability, Payment, Due	$ 30	$ 51
Finance Lease, Weighted Average Remaining Lease Term	5 months 1 day	8 months 1 day
Finance Lease, Weighted Average Discount Rate, Percent	1.07%	1.07%

Leases Amortization of Operatin

Leases Amortization of Operating Lease Liabilities (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Dec. 31, 2021
Leases [Abstract]
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 Total Leases Nine months ended December 31, 2022 $ 5,692 $ 98 $ 5,790 2023 6,252 92 6,344 2024 5,660 93 5,752 2025 4,363 93 4,456 2026 3,799 93 3,891 Beyond 2026 8,263 116 8,379 Total lease payments $ 34,028 $ 583 $ 34,611 Less: interest 2,444 21 2,465 Present value of lease payments $ 31,585 $ 562 $ 32,147
Operating Leases
Nine months ended December 31, 2022	$ 5,692
2023	6,252
2024	5,660
2025	4,363
2026	3,799
Beyond 2026	8,263
Total lease payments	34,028	$ 34,751
Less: interest	2,444
Present value of lease payments	31,585	31,345
Finance Leases
Nine months ended December 31, 2022	98
2023	92
2024	93
2025	93
2026	93
Beyond 2026	116
Total lease payments	583	164
Less: interest	21
Present value of lease payments	562	$ 163
Total Leases
Nine months ended December 31, 2022	5,790
2023	6,344
2024	5,752
2025	4,456
2026	3,891
Beyond 2026	8,379
Total lease payments	34,611
Less: interest	2,465
Present value of lease payments	$ 32,147

Leases (Details Textuals)

Leases (Details Textuals) - USD ($) $ in Millions	Mar. 31, 2022	Dec. 31, 2021
Lessee, Lease, Description [Line Items]
Additional operating leases	$ 14	$ 13
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	41 years
Additional operating lease terms	6 years

Uncategorized Items - asb-20220

Label	Element	Value
Series F Preferred Stock [Member] | Retained Earnings [Member]
Preferred Stock, Dividends, Per Share, Cash Paid	us-gaap_PreferredStockDividendsPerShareCashPaid	$ 0.3515625
Series E Preferred Stock [Member]
Preferred Stock, Dividends, Per Share, Cash Paid	us-gaap_PreferredStockDividendsPerShareCashPaid	$ 0.3671875