Associated Banc-Corp (ASB) 10-Q 27 Apr 23 2023 Q1 Quarterly report Financial data

Document and Entity Information

Document and Entity Information - shares	3 Months Ended
	Mar. 31, 2023	Apr. 24, 2023
Entity Information [Line Items]
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Mar. 31, 2023
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		150,890,583
Entity Central Index Key	0000007789
Amendment Flag	false
Document Fiscal Year Focus	2023
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
The New York Stock Exchange | Two Thousand Twenty Three Subordinated Notes
Entity Information [Line Items]
Title of 12(b) Security	6.625% Fixed-Rate Reset Subordinated Notes due 2033
Trading Symbol	ASBA
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, 2023	Dec. 31, 2022
Assets
Cash and due from banks	$ 311,269	$ 436,952
Interest-bearing deposits in other financial institutions	511,116	156,693
Federal funds sold and securities purchased under agreements to resell	455	27,810
AFS investment securities, at fair value	3,381,607	2,742,025
HTM investment securities, net, at amortized cost	3,967,058	3,960,398
Equity securities	30,514	25,216
Federal Home Loan Bank and Federal Reserve Bank stocks, at cost	331,420	295,496
Residential loans held for sale	35,742	20,383
Commercial loans held for sale	33,490	0
Loans	29,207,072	28,799,569
Allowance for loan losses	(326,432)	(312,720)
Loans, net	28,880,640	28,486,849
Tax credit and other investments	269,269	276,773
Premises and equipment, net	375,540	376,906
Bank and corporate owned life insurance	677,328	676,530
Goodwill	1,104,992	1,104,992
Other intangible assets, net	47,079	49,282
Servicing Asset at Fair Value, Amount	74,479	77,351
Interest receivable	152,404	144,449
Other assets	518,115	547,621
Total assets	40,702,519	39,405,727
Liabilities and stockholders' equity
Noninterest-bearing demand deposits	7,328,689	7,760,811
Interest-bearing deposits	23,003,134	21,875,343
Total deposits	30,331,824	29,636,154
Federal funds purchased and securities sold under agreements to repurchase	208,398	585,139
Commercial paper	18,210	20,798
FHLB advances	4,986,138	4,319,861
Other long-term funding	544,103	248,071
Allowance for unfunded commitments	39,776	38,776
Accrued expenses and other liabilities	448,407	541,438
Total liabilities	36,576,856	35,390,237
Stockholders’ equity
Preferred equity	194,112	194,112
Common stock	1,752	1,752
Surplus	1,706,206	1,712,733
Retained earnings	2,973,354	2,904,882
Accumulated other comprehensive (loss)	(233,588)	(272,799)
Treasury stock, at cost	(516,173)	(525,190)
Total common equity	3,931,551	3,821,378
Total stockholders’ equity	4,125,663	4,015,490
Total liabilities and stockholders’ equity	$ 40,702,519	$ 39,405,727
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	150,885,862	150,444,019
Preferred shares, par value	$ 1	$ 1
Common shares, par value	$ 0.01	$ 0.01

Consolidated Balance Sheets (Pa

Consolidated Balance Sheets (Parenthetical) - $ / shares	Mar. 31, 2023	Dec. 31, 2022
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, 2023	Mar. 31, 2022
Interest income
Interest and fees on loans	$ 391,320	$ 167,697
Interest and dividends on investment securities
Taxable	30,142	16,472
Tax-exempt	16,025	16,108
Other interest	5,329	1,993
Total interest income	442,817	202,270
Interest expense
Interest on deposits	109,422	3,571
Interest on federal funds purchased and securities sold under agreements to repurchase	3,143	38
Interest on other short-term funding	0	1
Interest on FHLB advances	49,960	8,182
Interest on long-term funding	6,281	2,730
Total interest expense	168,807	14,522
Net interest income	274,010	187,747
Provision for credit losses	17,971	(3,990)
Net interest income after provision for credit losses	256,039	191,737
Noninterest income
Capital markets, net	5,083	8,646
Mortgage banking, net	3,545	8,391
Bank and corporate owned life insurance	2,664	2,071
Asset gains, net	263	188
Investment securities gains (losses), net	51	21
Other	2,422	2,198
Noninterest Income, Total	62,073	74,467
Noninterest expense
Personnel	116,420	104,811
Technology	23,598	21,485
Occupancy	15,063	16,080
Business development and advertising	5,849	4,954
Equipment	4,930	4,960
Legal and professional	3,857	5,087
Loan and foreclosure costs	1,138	2,014
FDIC assessment	6,875	5,100
Other intangible amortization	2,203	2,203
Other	7,479	6,597
Total noninterest expense	187,412	173,292
Income before income taxes	130,700	92,912
Income tax expense	27,340	18,650
Net income	103,360	74,262
Preferred stock dividends	2,875	2,875
Net income available to common equity	$ 100,485	$ 71,387
Earnings per common share
Basic	$ 0.67	$ 0.48
Diluted	$ 0.66	$ 0.47
Average common shares outstanding
Basic	149,763	148,781
Diluted	151,128	150,492
Wealth management fees
Noninterest income
Noninterest Income In Scope of Topic 606	$ 20,189	$ 22,404
Service charges and deposit account fees
Noninterest income
Noninterest Income In Scope of Topic 606	12,994	16,856
Card-based fees
Noninterest income
Card-based fees	10,586	9,926
Other fee-based revenue
Noninterest income
Card-based fees	$ 4,276	$ 3,766

Consolidated Statements of Comp

Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Statement of Comprehensive Income [Abstract]
Net income	$ 103,360	$ 74,262
AFS investment securities
Net unrealized gains (losses)	36,478	(103,284)
Unrealized (losses) on AFS securities transferred to HTM securities	0	(67,604)
Amortization of net unrealized losses on AFS securities transferred to HTM securities	2,267	1,108
Reclassification adjustment for net (gains) realized in net income	0	(21)
Income tax benefit (expense)	(9,892)	43,098
Other comprehensive income (loss) on AFS securities	28,853	(126,702)
Unrealized Gain (Loss) on Cash Flow Hedging Instruments	13,763	0
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI on Derivatives, before Tax	1,262	0
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), Reclassification, Tax	(4,694)	0
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI on Derivatives, Net of Tax	10,331	0
Defined benefit pension and postretirement obligations
Amortization of prior service cost	(81)	(81)
Amortization of actuarial loss	30	74
Income tax benefit	79	2
Other comprehensive income (loss) on pension and postretirement obligations	27	(6)
Total other comprehensive income (loss)	39,211	(126,708)
Comprehensive income (loss)	$ 142,571	$ (52,445)

Consolidated Statements of Chan

Consolidated Statements of Changes in Stockholders' Equity (Unaudited) - USD ($) $ in Thousands	Total	Series E Preferred Stock	Series F Preferred Stock	Cumulative Effect, Period Of Adoption, Adjustment	Preferred Equity	Preferred Equity Cumulative Effect, Period Of Adoption, Adjustment	Common Stock	Common Stock Cumulative Effect, Period Of Adoption, Adjustment	Surplus	Surplus Cumulative Effect, Period Of Adoption, Adjustment	Retained Earnings [Member]	Retained Earnings [Member] Cumulative Effect, Period Of Adoption, Adjustment	Accumulated Other Comprehensive (Loss)	Accumulated Other Comprehensive (Loss) Cumulative Effect, Period Of Adoption, Adjustment	Treasury Stock, Common	Treasury Stock, Common Performance/Service Based RSAs, RSA,	Treasury Stock, Common Cumulative Effect, Period Of Adoption, Adjustment
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:
Net income	74,262										74,262
Net other comprehensive income during period	(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)		0				18,565
Purchase of treasury stock,	(5,193)															$ (5,193)
Cash dividends:
Common stock	(30,583)										(30,583)
Preferred stock(a)	(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)
Cash dividends:
Preferred Stock, Dividends, Per Share, Cash Paid		$ 0.3671875	$ 0.3515625
Beginning balance at Dec. 31, 2022	4,015,490				194,112		1,752		1,712,733		2,904,882		(272,799)		(525,190)
Comprehensive income:
Net income	103,360										103,360
Net other comprehensive income during period	39,211												39,211
Comprehensive income (loss)	142,571
Common stock issued:
Shares Issued, Value, Share-based Payment Arrangement, after Forfeiture	1,766								(12,612)						14,379
Purchase of treasury stock,	(5,362)															$ (5,362)
Cash dividends:
Common stock	(32,013)										(32,013)
Preferred stock(a)	(2,875)										(2,875)
Stock-based compensation expense, net	6,086								6,086
Ending balance at Mar. 31, 2023	$ 4,125,663				$ 194,112		$ 1,752		$ 1,706,206		$ 2,973,354		$ (233,588)		$ (516,173)
Cash dividends:
Preferred Stock, Dividends, Per Share, Cash Paid		$ 0.3671875	$ 0.3515625

Consolidated Statements of Cash

Consolidated Statements of Cash Flows - USD ($) $ in Thousands	3 Months Ended		12 Months Ended
	Mar. 31, 2023	Mar. 31, 2022	Dec. 31, 2022
Cash flows from operating activities
Net income	$ 103,360	$ 74,262
Adjustments to reconcile net income to net cash provided by operating activities:
Provision for credit losses	17,971	(3,990)
Depreciation and amortization	11,425	11,680
Change in MSRs valuation	1,857	(9,451)
Amortization of other intangible assets	2,203	2,203
Amortization and accretion on earning assets, funding, and other, net	338	5,338
Net amortization of tax credit investments	8,574	8,535
(Gains) on sales of investment securities, net	0	(21)
Asset (gains), net	(263)	(188)
Loss on mortgage banking activities, net	251	4,183
Mortgage loans originated and acquired for sale	(69,254)	(252,113)
Proceeds from sales of mortgage loans held for sale	54,652	296,089
Changes in certain assets and liabilities:
(Increase) in interest receivable	(7,955)	(2,592)
(Decrease) increase in interest payable	14,775	(1,917)
(Decrease) in expense payable	(52,396)	(46,737)
(Decrease) increase in net derivative position	(42,403)	152,545
Net change in other assets and other liabilities	4,336	8,292
Net cash provided by operating activities	47,470	246,119
Cash flows from investing activities
Net (increase) in loans	(414,268)	(305,878)
Purchases of:
AFS securities	(681,386)	(409,076)
HTM securities	(41,524)	(135,301)
Federal Home Loan Bank and Federal Reserve Bank stocks and equity securities	(56,892)	(301)
Proceeds from:
Sales of AFS securities	0	734
Sale of Federal Home Loan Bank and Federal Reserve Bank stocks and equity securities	15,765	8
Prepayments, calls, and maturities of AFS securities	79,746	167,986
Prepayments, calls, and maturities of HTM securities	33,053	51,206
Sales, prepayments, calls, and maturities of other assets	10,115	18,012
Net change in tax credit and alternative investments	(7,033)	(10,293)
Premises, equipment, and software, net of disposals	(13,898)	(17,141)
Net cash (used in) investing activities	(1,076,322)	(640,045)
Cash flows from financing activities
Net increase (decrease) in deposits	695,723	(60,949)
Net increase (decrease) in short-term funding	(379,329)	45,098
Net increase in short-term FHLB advances	660,000	320,000
Repayment of long-term FHLB advances	(507)	(414,578)
Proceeds from long-term FHLB advances	115	11,506
Proceeds from issuance of long-term funding	292,740	0
(Repayment) proceeds of finance lease principal	(21)	399
Proceeds from issuance of common stock for stock-based compensation plans	1,766	6,654
Cash dividends on common stock	(32,013)	(30,583)
Cash dividends on preferred stock	(2,875)	(2,875)
Net cash provided by (used in) financing activities	1,230,238	(130,521)
Net increase (decrease) in cash and cash equivalents	201,385	(524,447)
Cash and cash equivalents at beginning of period	621,455	1,025,515	$ 1,025,515
Cash and cash equivalents at end of period(a)	822,840	501,068	621,455
Supplemental disclosures of cash flow information
Cash paid for interest	153,760	16,267
Cash paid for (received from) income and franchise taxes	1,086	(1,471)
Loans and bank premises transferred to OREO	3,599	426
Capitalized mortgage servicing rights	474	3,042	$ 7,279
Loans transferred into held for sale from portfolio, net	94	2,644
Transfer of AFS securities to HTM securities	0	1,621,990
Unsettled trades to purchase securities	0	4,246
Change in Unrealized Gain (Loss) on Hedged Item in Fair Value Hedge	(10,724)	0
Unrealized Gain (Loss) on Cash Flow Hedging Instruments	13,763	0
Fair Value, Measurements, Recurring
Supplemental disclosures of cash flow information
Unrealized Gain (Loss) on Cash Flow Hedging Instruments	10,331	0
Performance/Service Based RSAs, RSA,
Cash flows from financing activities
Purchase of treasury stock, open market purchases	(5,362)	(5,193)
Retained Earnings [Member]
Cash flows from operating activities
Net income	$ 103,360	$ 74,262

Basis of Presentation

Basis of Presentation	3 Months Ended
	Mar. 31, 2023
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. 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.

Summary of Significant Accounti

Summary of Significant Accounting Policies	3 Months Ended
	Mar. 31, 2023
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 2022 Annual Report on Form 10-K. New Accounting Pronouncements Adopted Standard Description Date of 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 did not have a material impact on the Corporation's results of operation, financial position or liquidity, but resulted in additional disclosure requirements related to gross charge offs by vintage year and the removal of TDR disclosures, replaced by additional disclosures on the types of modifications of loans to borrowers experiencing financial difficulties. The Corporation has adopted this update prospectively. 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, liquidity or disclosures, the impacts are discussed in the applicable sections of this financial review. Standard Description Date of anticipated adoption Effect on financial statements ASU 2023-02 Investments-Equity Method and Joint Ventures (Topic 323): Accounting for Investments in Tax Credit Structures Using the Proportional Amortization Method The amendments in this update permit reporting entities to elect to account for their tax equity investments, regardless of the tax credit program from which the income tax credits are received, using the proportional amortization method if certain conditions are met. A reporting entity may make an accounting policy election to apply the proportional amortization method on a tax-credit-program-by-tax-credit-program basis rather than electing to apply the proportional amortization method at the reporting entity level or to individual investments. The amendments in this update also remove certain guidance for Qualified Affordable Housing Project investments and require the application of the delayed equity contribution guidance to all tax equity investments. The amendments in this update are effective for fiscal years beginning after December 15, 2023, and must be applied on either a modified retrospective or a retrospective basis. Early adoption is permitted in any interim period, however if adopted in an interim period the entity shall adopt the amendments in this update as of the beginning of the fiscal year that includes the interim period. 1st Quarter 2024 The Corporation is currently evaluating the impact on its results of operation, financial position, liquidity, and disclosures.

Earnings Per Common Share

Earnings Per Common Share	3 Months Ended
	Mar. 31, 2023
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) 2023 2022 Net income $ 103,360 $ 74,262 Preferred stock dividends (2,875) (2,875) Net income available to common equity $ 100,485 $ 71,387 Common shareholder dividends (31,808) (30,372) Unvested share-based payment awards (205) (211) Undistributed earnings $ 68,472 $ 40,804 Undistributed earnings allocated to common shareholders $ 68,086 $ 40,548 Undistributed earnings allocated to unvested share-based payment awards 386 256 Undistributed earnings $ 68,472 $ 40,804 Basic Distributed earnings to common shareholders $ 31,808 $ 30,372 Undistributed earnings allocated to common shareholders 68,086 40,548 Total common shareholders earnings, basic $ 99,894 $ 70,920 Diluted Distributed earnings to common shareholders $ 31,808 $ 30,372 Undistributed earnings allocated to common shareholders 68,086 40,548 Total common shareholders earnings, diluted $ 99,894 $ 70,920 Weighted average common shares outstanding 149,763 148,781 Effect of dilutive common stock awards 1,365 1,711 Diluted weighted average common shares outstanding 151,128 150,492 Basic earnings per common share $ 0.67 $ 0.48 Diluted earnings per common share $ 0.66 $ 0.47

Stock-Based Compensation

Stock-Based Compensation	3 Months Ended
	Mar. 31, 2023
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, 2023 is presented below: Stock Options Shares (a) Weighted Average Weighted Average Remaining Contractual Term Aggregate Intrinsic Value (a) Outstanding at December 31, 2022 3,994 $ 21.06 5.11 years $ 10,525 Exercised 34 17.07 Forfeited or expired — — Outstanding at March 31, 2023 3,960 $ 21.10 4.87 years $ 1,039 Options Exercisable at March 31, 2023 3,746 $ 21.27 4.75 years $ 887 (a) In thousands Intrinsic value represents the amount by which the fair market value of the underlying stock exceeds the exercise price of the stock option. For the three months ended March 31, 2023, the intrinsic value of stock options exercised was approximately $219,000, compared to $3 million for the three months ended March 31, 2022. For the three months ended March 31, 2023, the total fair value of stock options vested was approximately $955,000 compared to $2 million for the three months ended March 31, 2022. The Corporation recognized compensation expense for the vesting of stock options of approximately $108,000 for the three months ended March 31, 2023, compared to $241,000 for the three months ended March 31, 2022. At March 31, 2023, the Corporation had approximately $270,000 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 Compensation and Benefits Committee of the Corporation's Board of Directors, 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, 2023: Restricted Stock Shares (a) Weighted Average Outstanding at December 31, 2022 2,303 $ 20.81 Granted 813 22.67 Vested 630 20.99 Forfeited 2 21.92 Outstanding at March 31, 2023 2,484 $ 21.38 (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 2022 and 2023 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,

Investment Securities

Investment Securities	3 Months Ended
	Mar. 31, 2023
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, 2023 were as follows: ($ in thousands) Amortized Gross Gross Fair Value AFS investment securities U. S. Treasury securities $ 124,478 $ — $ (12,735) $ 111,743 Agency securities 15,000 — (1,271) 13,730 Obligations of state and political subdivisions (municipal securities) 230,673 291 (2,063) 228,902 Residential mortgage-related securities: FNMA/FHLMC 1,768,846 260 (194,529) 1,574,578 GNMA 1,092,742 7,273 (4,427) 1,095,588 Commercial mortgage-related securities: FNMA/FHLMC 18,952 — (1,335) 17,618 GNMA 194,550 17 (5,101) 189,466 Asset backed securities: FFELP 147,876 — (4,791) 143,084 SBA 4,020 13 (50) 3,983 Other debt securities 3,000 — (82) 2,918 Total AFS investment securities $ 3,600,137 $ 7,854 $ (226,383) $ 3,381,607 HTM investment securities U. S. Treasury securities $ 999 $ — $ (51) $ 947 Obligations of state and political subdivisions (municipal securities) 1,720,177 4,888 (146,544) 1,578,521 Residential mortgage-related securities: FNMA/FHLMC 981,065 30,284 (163,514) 847,835 GNMA 53,298 195 (2,897) 50,596 Private-label 361,170 11,242 (71,147) 301,265 Commercial mortgage-related securities: FNMA/FHLMC 785,516 14,657 (156,369) 643,803 GNMA 64,859 502 (6,826) 58,536 Total HTM investment securities $ 3,967,083 $ 61,768 $ (547,349) $ 3,481,502 The amortized cost and fair values of AFS and HTM securities at December 31, 2022 were as follows: ($ in thousands) Amortized Gross Gross Fair Value AFS investment securities U. S. Treasury securities $ 124,441 $ — $ (15,063) $ 109,378 Agency securities 15,000 — (1,468) 13,532 Obligations of state and political subdivisions (municipal securities) 235,693 96 (5,074) 230,714 Residential mortgage-related securities: FNMA/FHLMC 1,820,642 404 (216,436) 1,604,610 GNMA 502,537 314 (5,255) 497,596 Commercial mortgage-related securities: FNMA/FHLMC 19,038 — (1,896) 17,142 GNMA 115,031 — (4,569) 110,462 Asset backed securities: FFELP 157,138 — (5,947) 151,191 SBA 4,512 15 (51) 4,477 Other debt securities 3,000 — (78) 2,922 Total AFS investment securities $ 2,997,032 $ 830 $ (255,837) $ 2,742,025 HTM investment securities U. S. Treasury securities $ 999 $ — $ (62) $ 936 Obligations of state and political subdivisions (municipal securities) 1,732,351 1,994 (182,697) 1,551,647 Residential mortgage-related securities: FNMA/FHLMC 961,231 31,301 (175,760) 816,771 GNMA 52,979 85 (3,436) 49,628 Private-label 364,728 11,697 (72,920) 303,505 Commercial mortgage-related securities: FNMA/FHLMC 778,796 15,324 (178,281) 615,839 GNMA 69,369 577 (7,254) 62,691 Total HTM investment securities $ 3,960,451 $ 60,978 $ (620,411) $ 3,401,018 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, 2023, are shown below: AFS HTM ($ in thousands) Amortized Fair Amortized Fair Due in one year or less $ 6,773 $ 6,768 $ 14,358 $ 14,350 Due after one year through five years 179,763 165,292 36,046 35,926 Due after five years through ten years 150,181 149,003 161,217 159,591 Due after ten years 36,434 36,229 1,509,554 1,369,602 Total debt securities 373,151 357,292 1,721,175 1,579,468 Residential mortgage-related securities: FNMA/FHLMC 1,768,846 1,574,578 981,065 847,835 GNMA 1,092,742 1,095,588 53,298 50,596 Private-label — — 361,170 301,265 Commercial mortgage-related securities: FNMA/FHLMC 18,952 17,618 785,516 643,803 GNMA 194,550 189,466 64,859 58,536 Asset backed securities: FFELP 147,876 143,084 — — SBA 4,020 3,983 — — Total investment securities $ 3,600,137 $ 3,381,607 $ 3,967,083 $ 3,481,502 Ratio of fair value to amortized cost 93.9 % 87.8 % 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, 2023: ($ in thousands) AAA AA A Not Rated Total U. S. Treasury securities $ 999 $ — $ — $ — $ 999 Obligations of state and political subdivisions (municipal securities) 807,729 903,689 7,602 1,157 1,720,177 Residential mortgage-related securities: FNMA/FHLMC 981,065 — — — 981,065 GNMA 53,298 — — — 53,298 Private-label 361,170 — — — 361,170 Commercial mortgage-related securities: FNMA/FHLMC 785,516 — — — 785,516 GNMA 64,859 — — — 64,859 Total HTM securities $ 3,054,635 $ 903,689 $ 7,602 $ 1,157 $ 3,967,083 The following table summarizes the credit quality indicators of HTM securities at amortized cost at December 31, 2022: ($ in thousands) AAA AA A Not Rated Total U. S. Treasury securities $ 999 $ — $ — $ — $ 999 Obligations of state and political subdivisions (municipal securities) 806,529 917,059 7,604 1,158 1,732,351 Residential mortgage-related securities: FNMA/FHLMC 961,231 — — — 961,231 GNMA 52,979 — — — 52,979 Private-label 364,728 — — — 364,728 Commercial mortgage-related securities: FNMA/FHLMC 778,796 — — — 778,796 GNMA 69,369 — — — 69,369 Total HTM securities $ 3,034,630 $ 917,059 $ 7,604 $ 1,158 $ 3,960,451 The following table summarizes gross realized gains and losses on AFS securities, net write-up of equity securities, and proceeds from the sale of investment securities for the three months ended March 31, 2023 and 2022: Three Months Ended Mar 31, ($ in thousands) 2023 2022 Gross gains on AFS securities $ — $ 21 Net write-up of equity securities 51 — Investment securities gains (losses), net $ 51 $ 21 Proceeds from sales of AFS investment securities $ — $ 734 Investment securities with a carrying value of $2.2 billion and $2.3 billion at March 31, 2023 and December 31, 2022, respectively, were pledged as required to secure certain deposits or for other purposes. Accrued interest receivable on HTM securities totaled $16 million and $19 million at March 31, 2023 and December 31, 2022, respectively. Accrued interest receivable on AFS securities totaled $12 million and $9 million at March 31, 2023 and December 31, 2022, 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, 2023 and December 31, 2022. A security is considered past due once it is 30 days past due under the terms of the agreement. At both March 31, 2023 and December 31, 2022, the Corporation had no past due HTM securities. The allowance for credit losses on HTM securities was approximately $25,000 at March 31, 2023 and approximately $54,000 at December 31, 2022, attributable entirely to the Corporation's municipal securities, included in HTM investment securities, net, at amortized cost on the consolidated balance sheets. The Corporation also holds U.S. Treasury, municipal, and mortgage-related securities issued by the U.S. government or a GSE which are backed by the full faith and credit of the U.S. government and private-label residential mortgage-related securities that have credit enhancement which covers the first 15% of losses and, as a result, no allowance for credit losses has been recorded related to these securities. The following represents gross unrealized losses and the related fair value of AFS and HTM securities, aggregated by investment category and length of time individual securities have been in a continuous unrealized loss position, at March 31, 2023: Less than 12 months 12 months or more Total ($ in thousands) Number Unrealized Fair Number Unrealized Fair Unrealized Fair AFS investment securities U.S. Treasury securities — $ — $ — 7 $ (12,735) $ 111,743 $ (12,735) $ 111,743 Agency securities — — — 1 (1,271) 13,730 (1,271) 13,730 Obligations of state and political subdivisions (municipal securities) 189 (1,025) 111,529 72 (1,037) 40,199 (2,063) 151,727 Residential mortgage-related securities: FNMA/FHLMC 12 (3,619) 51,021 96 (190,909) 1,504,384 (194,529) 1,555,405 GNMA 23 (2,583) 294,212 9 (1,844) 33,128 (4,427) 327,340 Commercial mortgage-related securities: FNMA/FHLMC — — — 1 (1,335) 17,618 (1,335) 17,618 GNMA 13 (1,039) 100,585 29 (4,062) 74,665 (5,101) 175,250 Asset backed securities: FFELP — — — 15 (4,791) 143,084 (4,791) 143,084 SBA 2 (1) 331 6 (49) 1,755 (50) 2,087 Other debt securities 1 (31) 969 2 (51) 1,949 (82) 2,918 Total 240 $ (8,299) $ 558,647 238 $ (218,084) $ 1,942,255 $ (226,383) $ 2,500,901 HTM investment securities U.S. Treasury securities — $ — $ — 1 $ (51) $ 947 $ (51) $ 947 Obligations of state and political subdivisions (municipal securities) 311 (7,598) 454,461 400 (138,946) 614,842 (146,544) 1,069,304 Residential mortgage-related securities: FNMA/FHLMC 63 (2,881) 75,386 50 (160,633) 762,280 (163,514) 837,666 GNMA 16 (168) 6,511 63 (2,729) 32,771 (2,897) 39,282 Private-label — — — 18 (71,147) 301,265 (71,147) 301,265 Commercial mortgage-related securities: FNMA/FHLMC 4 (473) 29,658 41 (155,897) 614,153 (156,369) 643,811 GNMA — — — 14 (6,826) 58,536 (6,826) 58,536 Total 394 $ (11,120) $ 566,017 587 $ (536,229) $ 2,384,794 $ (547,349) $ 2,950,811 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, 2022: Less than 12 months 12 months or more Total ($ in thousands) Number Unrealized Fair Number Unrealized Fair Unrealized Fair AFS investment securities U.S. Treasury securities — $ — $ — 7 $ (15,063) $ 109,378 $ (15,063) $ 109,378 Agency securities — — — 1 (1,468) 13,532 (1,468) 13,532 Obligations of state and political subdivisions (municipal securities) 358 (5,066) 201,260 4 (8) 1,916 (5,074) 203,176 Residential mortgage-related securities: FNMA/FHLMC 24 (31,266) 260,986 84 (185,170) 1,321,420 (216,436) 1,582,406 GNMA 23 (4,415) 220,276 2 (840) 11,096 (5,255) 231,372 Commercial mortgage-related securities: FNMA/FHLMC 1 (1,896) 17,142 — — — (1,896) 17,142 GNMA 33 (3,920) 101,036 4 (649) 9,426 (4,569) 110,462 Asset backed securities: FFELP 3 (1,668) 44,304 12 (4,278) 106,887 (5,947) 151,191 SBA 2 (1) 417 6 (50) 2,057 (51) 2,474 Other debt securities 2 (30) 1,970 1 (49) 951 (78) 2,922 Total 446 $ (48,263) $ 847,391 121 $ (207,575) $ 1,576,665 $ (255,837) $ 2,424,055 HTM investment securities U.S. Treasury securities 1 $ (62) $ 936 — $ — $ — $ (62) $ 936 Obligations of state and political subdivisions (municipal securities) 771 (96,282) 1,079,216 156 (86,415) 231,022 (182,697) 1,310,238 Residential mortgage-related securities: FNMA/FHLMC 79 (18,925) 143,201 22 (156,836) 671,570 (175,760) 814,770 GNMA 81 (3,436) 44,476 — — — (3,436) 44,476 Private-label 3 (9,509) 58,733 15 (63,411) 244,772 (72,920) 303,505 Commercial mortgage-related securities: FNMA/FHLMC 4 (3,814) 20,338 39 (174,467) 576,911 (178,281) 597,249 GNMA 8 (2,528) 34,612 6 (4,726) 28,080 (7,254) 62,691 Total 947 $ (134,556) $ 1,381,511 238 $ (485,855) $ 1,752,354 $ (620,411) $ 3,133,865 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, 2023 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 $245 million and $209 million at March 31, 2023 and December 31, 2022, respectively. The Corporation had Federal Reserve Bank stock of $87 million at both March 31, 2023 and December 31, 2022. Accrued interest receivable on FHLB stock totaled $4 million and $3 million at March 31, 2023 and December 31, 2022, respectively. There was approximately $776,000 of accrued interest receivable on Federal Reserve Bank Stock at March 31, 2023, and none at December 31, 2022. 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, 2023 and December 31, 2022, the Corporation had equity securities with readily determinable fair values of $6 million.

Loans

Loans	3 Months Ended
	Mar. 31, 2023
Receivables [Abstract]
Loans, Notes, Trade and Other Receivables Disclosure [Text Block]	Loans The period end loan composition was as follows: ($ in thousands) Mar 31, 2023 Dec 31, 2022 Asset-based lending & equipment finance $ 522,834 $ 458,887 Commercial and industrial 9,346,947 9,300,567 Commercial real estate — owner occupied 1,050,236 991,722 Commercial and business lending 10,920,017 10,751,176 Commercial real estate — investor 5,094,249 5,080,344 Real estate construction 2,147,070 2,155,222 Commercial real estate lending 7,241,318 7,235,565 Total commercial 18,161,335 17,986,742 Residential mortgage 8,605,164 8,511,550 Auto finance 1,551,538 1,382,073 Home equity 609,787 624,353 Other consumer 279,248 294,851 Total consumer 11,045,737 10,812,828 Total loans $ 29,207,072 $ 28,799,569 Accrued interest receivable on loans totaled $119 million at March 31, 2023, and $113 million at December 31, 2022, and is included in interest receivable on the consolidated balance sheets. Interest accrued but not received for loans placed on nonaccrual is reversed against interest income. The amount of accrued interest reversed was immaterial at both the three months ended March 31, 2023 and 2022. The following table presents loans by credit quality indicator by origination year at March 31, 2023: Term Loans Amortized Cost Basis by Origination Year (a) ($ in thousands) Rev Loans Converted to Term (a) Rev Loans Amortized Cost Basis YTD 2023 2022 2021 2020 2019 Prior Total Asset-based lending & equipment finance: Risk rating: Pass $ — $ 60,256 $ 55,535 $ 262,074 $ 125,609 $ 1,420 $ 543 $ — $ 505,437 Potential Problem — — — 1,396 — 16,000 — — 17,396 Asset-based lending & equipment finance $ — $ 60,256 $ 55,535 $ 263,471 $ 125,609 $ 17,420 $ 543 $ — $ 522,834 Commercial and industrial: Risk rating: Pass $ 71 $ 2,003,455 $ 332,572 $ 2,872,816 $ 2,101,488 $ 467,455 $ 558,852 $ 685,216 $ 9,021,853 Special Mention — 86,593 — 30,540 31,161 2,913 — 33,501 184,709 Potential Problem 128 39,951 6,145 34,388 27,494 4,675 132 4,865 117,650 Nonaccrual 9,500 — — 4,707 9,500 8,528 — — 22,735 Commercial and industrial $ 9,698 $ 2,130,000 $ 338,716 $ 2,942,451 $ 2,169,643 $ 483,571 $ 558,983 $ 723,583 $ 9,346,947 Commercial real estate - owner occupied: Risk rating: Pass $ — $ 22,344 $ 87,095 $ 205,922 $ 234,300 $ 150,009 $ 152,649 $ 151,106 $ 1,003,424 Special Mention — — — — — 3,483 9,500 274 13,257 Potential Problem — — 2,812 877 11,651 4,064 518 12,156 32,077 Nonaccrual 8 — 8 1,470 — — — — 1,478 Commercial real estate - owner occupied $ 8 $ 22,344 $ 89,914 $ 208,269 $ 245,950 $ 157,555 $ 162,667 $ 163,536 $ 1,050,236 Commercial and business lending: Risk rating: Pass $ 71 $ 2,086,055 $ 475,201 $ 3,340,812 $ 2,461,397 $ 618,883 $ 712,044 $ 836,323 $ 10,530,715 Special Mention — 86,593 — 30,540 31,161 6,396 9,500 33,775 197,965 Potential Problem 128 39,951 8,956 36,661 39,145 24,739 649 17,021 167,124 Nonaccrual 9,508 — 8 6,177 9,500 8,528 — — 24,213 Commercial and business lending $ 9,707 $ 2,212,600 $ 484,166 $ 3,414,190 $ 2,541,203 $ 658,546 $ 722,194 $ 887,119 $ 10,920,017 Commercial real estate - investor: Risk rating: Pass $ — $ 118,873 $ 324,298 $ 1,506,258 $ 1,375,935 $ 612,765 $ 489,024 $ 411,246 $ 4,838,398 Special Mention — — 18,454 92,149 22,247 8,225 — — 141,075 Potential Problem — — 24,803 22,047 22,209 — 1,019 19,575 89,653 Nonaccrual — — — — 24,855 — — 267 25,122 Commercial real estate - investor $ — $ 118,873 $ 367,555 $ 1,620,454 $ 1,445,246 $ 620,991 $ 490,042 $ 431,088 $ 5,094,249 Real estate construction: Risk rating: Pass $ — $ 29,616 $ 34,604 $ 1,025,918 $ 812,505 $ 197,722 $ 7,510 $ 11,059 $ 2,118,934 Special Mention — — — — — 12,308 15,651 — 27,958 Nonaccrual — — — — — — — 178 178 Real estate construction $ — $ 29,616 $ 34,604 $ 1,025,918 $ 812,505 $ 210,030 $ 23,160 $ 11,237 $ 2,147,070 Commercial real estate lending: Risk rating: Pass $ — $ 148,489 $ 358,901 $ 2,532,176 $ 2,188,440 $ 810,487 $ 496,533 $ 422,305 $ 6,957,332 Special Mention — — 18,454 92,149 22,247 20,533 15,651 — 169,033 Potential Problem — — 24,803 22,047 22,209 — 1,019 19,575 89,653 Nonaccrual — — — — 24,855 — — 445 25,300 Commercial real estate lending $ — $ 148,489 $ 402,159 $ 2,646,372 $ 2,257,752 $ 831,020 $ 513,203 $ 442,325 $ 7,241,318 Total commercial: Risk rating: Pass $ 71 $ 2,234,544 $ 834,103 $ 5,872,988 $ 4,649,837 $ 1,429,370 $ 1,208,578 $ 1,258,628 $ 17,488,047 Special Mention — 86,593 18,454 122,689 53,408 26,929 25,151 33,775 366,999 Potential Problem 128 39,951 33,760 58,708 61,354 24,739 1,668 36,596 256,776 Nonaccrual 9,508 — 8 6,177 34,355 8,528 — 445 49,513 Total commercial $ 9,707 $ 2,361,089 $ 886,324 $ 6,060,562 $ 4,798,955 $ 1,489,566 $ 1,235,396 $ 1,329,444 $ 18,161,335 Term Loans Amortized Cost Basis by Origination Year (a) ($ in thousands) Rev Loans Converted to Term (a) Rev Loans Amortized Cost Basis YTD 2023 2022 2021 2020 2019 Prior Total Residential mortgage: Risk rating: Pass $ — $ — $ 85,201 $ 1,490,848 $ 2,221,515 $ 1,687,853 $ 798,205 $ 2,261,293 $ 8,544,915 Special Mention — — 91 — — 95 — 105 291 Potential Problem — — 45 216 548 — 551 323 1,684 Nonaccrual — — 279 7,384 4,101 8,394 4,356 33,760 58,274 Residential mortgage $ — $ — $ 85,616 $ 1,498,448 $ 2,226,164 $ 1,696,342 $ 803,113 $ 2,295,481 $ 8,605,164 Auto finance: Risk rating: Pass $ — $ — $ 239,138 $ 1,208,658 $ 98,290 $ 299 $ 1,020 $ 388 $ 1,547,793 Special Mention — — — 1,168 141 — — — 1,310 Nonaccrual — — — 1,952 474 — 9 — 2,436 Auto finance $ — $ — $ 239,138 $ 1,211,778 $ 98,906 $ 299 $ 1,029 $ 388 $ 1,551,538 Home equity: Risk rating: Pass $ 2,173 $ 495,755 $ 230 $ 31,083 $ 6,835 $ 2,243 $ 5,732 $ 59,670 $ 601,549 Special Mention 18 124 — — — — 29 594 747 Potential Problem 14 — 14 196 — — 34 — 244 Nonaccrual 388 20 — 303 106 131 252 6,434 7,246 Home equity $ 2,592 $ 495,900 $ 244 $ 31,583 $ 6,941 $ 2,374 $ 6,047 $ 66,698 $ 609,787 Other consumer: Risk rating: Pass $ 90 $ 190,219 $ 1,860 $ 5,279 $ 4,017 $ 1,922 $ 849 $ 74,324 $ 278,471 Special Mention 1 617 — 13 11 3 10 23 676 Nonaccrual — 44 — — 7 6 6 36 100 Other consumer $ 91 $ 190,881 $ 1,860 $ 5,292 $ 4,035 $ 1,930 $ 866 $ 74,384 $ 279,248 Total consumer: Risk rating: Pass $ 2,263 $ 685,974 $ 326,429 $ 2,735,869 $ 2,330,657 $ 1,692,318 $ 805,806 $ 2,395,676 $ 10,972,729 Special Mention 19 742 91 1,181 152 98 39 722 3,024 Potential Problem 14 — 59 413 548 — 585 323 1,928 Nonaccrual 388 65 279 9,639 4,688 8,530 4,624 40,231 68,056 Total consumer $ 2,683 $ 686,781 $ 326,858 $ 2,747,101 $ 2,336,046 $ 1,700,946 $ 811,054 $ 2,436,951 $ 11,045,737 Total loans: Risk rating: Pass $ 2,334 $ 2,920,518 $ 1,160,532 $ 8,608,857 $ 6,980,494 $ 3,121,688 $ 2,014,384 $ 3,654,303 $ 28,460,776 Special Mention 19 87,335 18,545 123,869 53,560 27,027 25,189 34,497 370,023 Potential Problem 141 39,951 33,818 59,120 61,903 24,739 2,253 36,919 258,704 Nonaccrual 9,896 65 287 15,816 39,044 17,058 4,624 40,675 117,569 Total loans $ 12,390 $ 3,047,870 $ 1,213,182 $ 8,807,663 $ 7,135,000 $ 3,190,512 $ 2,046,450 $ 3,766,395 $ 29,207,072 (a) Revolving loans converted to term loans are those converted during the reporting period and are also reported in their year of origination. The following table presents loans by credit quality indicator by origination year at December 31, 2022: Term Loans Amortized Cost Basis by Origination Year (a) ($ in thousands) Rev Loans Converted to Term (a) Rev Loans Amortized Cost Basis 2022 2021 2020 2019 2018 Prior Total Asset-based lending & equipment finance: Risk rating: Pass $ — $ 47,446 $ 269,258 $ 121,914 $ 1,832 $ 653 $ 85 $ — $ 441,189 Potential Problem — — 1,448 — 16,250 — — — 17,698 Asset-based lending & equipment finance: $ — $ 47,446 $ 270,706 $ 121,914 $ 18,082 $ 653 $ 85 $ — $ 458,887 Commercial and industrial: Risk rating: Pass $ 1,423 $ 1,891,331 $ 2,976,288 $ 2,245,094 $ 566,001 $ 572,467 $ 330,557 $ 432,906 $ 9,014,644 Special Mention — 93,209 3,411 23,607 — — 19 32,497 152,744 Potential Problem 447 24,549 39,952 4,193 5,637 38,169 218 6,133 118,851 Nonaccrual 3,926 — 5,210 — 9,119 — — — 14,329 Commercial and industrial $ 5,796 $ 2,009,089 $ 3,024,861 $ 2,272,895 $ 580,757 $ 610,636 $ 330,794 $ 471,535 $ 9,300,567 Commercial real estate - owner occupied: Risk rating: Pass $ — $ 12,447 $ 211,645 $ 225,627 $ 163,965 $ 160,370 $ 73,487 $ 97,420 $ 944,961 Special Mention — — — — 1,136 1,491 9,713 — 12,339 Potential Problem — 1,325 1,238 11,141 5,523 10,769 370 4,055 34,422 Commercial real estate - owner occupied $ — $ 13,772 $ 212,883 $ 236,769 $ 170,624 $ 172,630 $ 83,570 $ 101,475 $ 991,722 Commercial and business lending: Risk rating: Pass $ 1,423 $ 1,951,224 $ 3,457,191 $ 2,592,636 $ 731,798 $ 733,490 $ 404,129 $ 530,326 $ 10,400,794 Special Mention — 93,209 3,411 23,607 1,136 1,491 9,732 32,497 165,083 Potential Problem 447 25,874 42,638 15,335 27,410 48,938 589 10,188 170,971 Nonaccrual 3,926 — 5,210 — 9,119 — — — 14,329 Commercial and business lending $ 5,796 $ 2,070,307 $ 3,508,450 $ 2,631,578 $ 769,463 $ 783,919 $ 414,449 $ 573,010 $ 10,751,176 Commercial real estate - investor: Risk rating: Pass $ 38,412 $ 106,280 $ 1,633,094 $ 1,419,000 $ 683,121 $ 530,444 $ 262,858 $ 210,299 $ 4,845,096 Special Mention — — 61,968 24,149 7,361 9,400 — 10,455 113,333 Potential Problem — — 16,147 21,303 27,635 1,333 19,017 7,099 92,535 Nonaccrual — — 2,177 25,668 — — — 1,535 29,380 Commercial real estate - investor $ 38,412 $ 106,280 $ 1,713,387 $ 1,490,120 $ 718,117 $ 541,177 $ 281,875 $ 229,387 $ 5,080,344 Real estate construction: Risk rating: Pass $ — $ 29,892 $ 900,593 $ 913,107 $ 241,230 $ 12,062 $ 2,226 $ 9,775 $ 2,108,885 Special Mention — — — — 12,174 33,087 — — 45,261 Potential Problem — — — — 970 — — — 970 Nonaccrual — — — — — — — 105 105 Real estate construction $ — $ 29,892 $ 900,593 $ 913,107 $ 254,374 $ 45,149 $ 2,226 $ 9,880 $ 2,155,222 Commercial real estate lending: Risk rating: Pass $ 38,412 $ 136,173 $ 2,533,687 $ 2,332,107 $ 924,351 $ 542,505 $ 265,083 $ 220,073 $ 6,953,981 Special Mention — — 61,968 24,149 19,535 42,487 — 10,455 158,595 Potential Problem — — 16,147 21,303 28,605 1,333 19,017 7,099 93,505 Nonaccrual — — 2,177 25,668 — — — 1,640 29,485 Commercial real estate lending $ 38,412 $ 136,173 $ 2,613,980 $ 2,403,227 $ 972,492 $ 586,326 $ 284,101 $ 239,267 $ 7,235,565 Term Loans Amortized Cost Basis by Origination Year (a) ($ in thousands) Rev Loans Converted to Term (a) Rev Loans Amortized Cost Basis 2022 2021 2020 2019 2018 Prior Total Total commercial: Risk rating: Pass $ 39,835 $ 2,087,396 $ 5,990,879 $ 4,924,743 $ 1,656,149 $ 1,275,996 $ 669,213 $ 750,399 $ 17,354,774 Special Mention — 93,209 65,379 47,756 20,671 43,978 9,732 42,952 323,677 Potential Problem 447 25,874 58,785 36,638 56,016 50,271 19,606 17,287 264,476 Nonaccrual 3,926 — 7,387 25,668 9,119 — — 1,640 43,814 Total commercial $ 44,208 $ 2,206,480 $ 6,122,430 $ 5,034,805 $ 1,741,955 $ 1,370,245 $ 698,550 $ 812,278 $ 17,986,742 Residential mortgage: Risk rating: Pass $ — $ — $ 1,410,566 $ 2,184,125 $ 1,716,663 $ 817,164 $ 370,724 $ 1,951,406 $ 8,450,648 Special Mention — — — 284 96 — — 63 444 Potential Problem — — 455 71 — 738 29 685 1,978 Nonaccrual — — 8,506 3,851 6,219 3,744 5,014 31,145 58,480 Residential mortgage $ — $ — $ 1,419,527 $ 2,188,332 $ 1,722,979 $ 821,645 $ 375,768 $ 1,983,299 $ 8,511,550 Auto finance: Risk rating: Pass $ — $ — $ 1,271,205 $ 106,102 $ 333 $ 1,267 $ 446 $ 61 $ 1,379,414 Special Mention — — 1,052 118 — — — — 1,170 Nonaccrual — — 1,149 331 — 9 — — 1,490 Auto finance $ — $ — $ 1,273,406 $ 106,551 $ 333 $ 1,276 $ 446 $ 61 $ 1,382,073 Home equity: Risk rating: Pass $ 7,254 $ 508,212 $ 31,389 $ 6,508 $ 2,112 $ 6,197 $ 6,966 $ 54,827 $ 616,211 Special Mention 47 102 — — — — 47 310 458 Potential Problem — 15 — — — 34 2 146 197 Nonaccrual 1,590 — 306 102 131 307 319 6,322 7,487 Home equity $ 8,891 $ 508,329 $ 31,695 $ 6,610 $ 2,243 $ 6,538 $ 7,333 $ 61,605 $ 624,353 Other consumer: Risk rating: Pass $ 64 $ 199,942 $ 7,429 $ 5,256 $ 2,468 $ 1,238 $ 174 $ 77,611 $ 294,117 Special Mention 6 490 11 — 5 5 — 25 537 Nonaccrual 78 56 11 21 10 56 10 34 197 Other consumer $ 147 $ 200,488 $ 7,452 $ 5,276 $ 2,482 $ 1,300 $ 184 $ 77,670 $ 294,851 Total consumer: Risk rating: Pass $ 7,318 $ 708,154 $ 2,720,589 $ 2,301,991 $ 1,721,576 $ 825,866 $ 378,310 $ 2,083,904 $ 10,740,390 Special Mention 52 592 1,063 403 101 5 47 398 2,609 Potential Problem — 15 455 71 — 772 31 831 2,175 Nonaccrual 1,668 56 9,973 4,304 6,360 4,116 5,343 37,501 67,654 Total consumer $ 9,038 $ 708,817 $ 2,732,080 $ 2,306,769 $ 1,728,037 $ 830,759 $ 383,731 $ 2,122,635 $ 10,812,828 Total loans: Risk rating: Pass $ 47,152 $ 2,795,551 $ 8,711,468 $ 7,226,734 $ 3,377,725 $ 2,101,861 $ 1,047,522 $ 2,834,303 $ 28,095,164 Special Mention 52 93,801 66,443 48,159 20,772 43,983 9,778 43,350 326,286 Potential Problem 447 25,889 59,240 36,709 56,016 51,043 19,637 18,118 266,651 Nonaccrual 5,595 56 17,360 29,972 15,479 4,116 5,343 39,141 111,467 Total loans $ 53,246 $ 2,915,297 $ 8,854,510 $ 7,341,574 $ 3,469,992 $ 2,201,004 $ 1,082,280 $ 2,934,912 $ 28,799,569 (a) Revolving loans converted to term loans are those converted during the reporting period and are also reported in their year of origination. The following table presents gross charge offs by origination year at March 31, 2023: Gross Charge Offs by Origination Year ($ in thousands) Rev Loans Amortized Cost Basis YTD 2023 2022 2021 2020 2019 Prior Total Commercial and industrial $ 823 $ — $ — $ — $ — $ — $ 2,152 $ 2,975 Commercial and business lending 823 — — — — — 2,152 2,975 Total commercial 823 — — — — — 2,152 2,975 Residential mortgage — — 107 19 8 2 32 168 Auto finance — — 922 181 — — — 1,103 Home equity — — 43 14 — 22 33 111 Other consumer 916 — 117 49 9 5 48 1,144 Total consumer 916 — 1,189 263 17 29 112 2,525 Total gross charge offs $ 1,739 $ — $ 1,189 $ 263 $ 17 $ 29 $ 2,264 $ 5,501 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. Accruing loan modifications could be pass or special mention, depending on the risk rating on the loan. 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 loan modification, 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, 2023: Accruing ($ in thousands) Current 30-59 Days 60-89 Days 90+ Days Nonaccrual (a)(b) Total Asset-based lending & equipment finance $ 522,834 $ — $ — $ — $ — $ 522,834 Commercial and industrial 9,319,650 4,110 130 323 22,735 9,346,947 Commercial real estate - owner occupied 1,045,803 2,955 — — 1,478 1,050,236 Commercial and business lending 10,888,287 7,065 130 323 24,213 10,920,017 Commercial real estate - investor 5,069,126 — — — 25,122 5,094,249 Real estate construction 2,146,892 — — — 178 2,147,070 Commercial real estate lending 7,216,018 — — — 25,300 7,241,318 Total commercial 18,104,305 7,065 130 323 49,513 18,161,335 Residential mortgage 8,539,264 7,430 196 — 58,274 8,605,164 Auto finance 1,540,463 7,330 1,310 — 2,436 1,551,538 Home equity 598,427 3,366 747 — 7,246 609,787 Other consumer 276,045 976 747 1,380 100 279,248 Total consumer 10,954,199 19,102 3,000 1,380 68,056 11,045,737 Total loans $ 29,058,504 $ 26,167 $ 3,130 $ 1,703 $ 117,569 $ 29,207,072 (a) Of the total nonaccrual loans, $78 million, or 66%, were current with respect to payment at March 31, 2023. (b) No interest income was recognized on nonaccrual loans for the three months ended March 31, 2023. In addition, there were $15 million of nonaccrual loans for which there was no related ACLL at March 31, 2023. The following table presents loans by past due status at December 31, 2022: Accruing ($ in thousands) Current 30-59 Days 60-89 Days 90+ Days Nonaccrual (a)(b) Total Asset-based lending & equipment finance $ 458,887 $ — $ — $ — $ — $ 458,887 Commercial and industrial 9,279,674 716 5,566 282 14,329 9,300,567 Commercial real estate - owner occupied 991,493 218 12 — — 991,722 Commercial and business lending 10,730,053 934 5,578 282 14,329 10,751,176 Commercial real estate - investor 5,049,897 1,067 — — 29,380 5,080,344 Real estate construction 2,155,077 39 — — 105 2,155,222 Commercial real estate lending 7,204,975 1,105 — — 29,485 7,235,565 Total commercial 17,935,028 2,040 5,578 282 43,814 17,986,742 Residential mortgage 8,443,072 9,811 63 124 58,480 8,511,550 Auto finance 1,371,176 8,238 1,170 — 1,490 1,382,073 Home equity 611,259 5,149 458 — 7,487 624,353 Other consumer 291,722 1,018 592 1,322 197 294,851 Total consumer 10,717,229 24,216 2,283 1,446 67,654 10,812,828 Total loans $ 28,652,257 $ 26,256 $ 7,861 $ 1,728 $ 111,467 $ 28,799,569 (a) Of the total nonaccrual loans, $64 million, or 58%, were current with respect to payment at December 31, 2022. (b) No interest income was recognized on nonaccrual loans for the year ended December 31, 2022. In addition, there were $11 million of nonaccrual loans for which there was no related ACLL at December 31, 2022. Loan Modifications and Troubled Debt Restructurings Under ASU 2022-02, effective January 1, 2023, loan modifications are reported if concessions have been granted to borrowers that are experiencing financial difficulty. Information on these loan modifications originated after the effective date is presented according to the new accounting guidance. Reporting periods prior to the adoption of ASU 2022-02 present information on TDRs under the previous disclosure requirements. The following tables show the composition of loan modifications made to borrowers experiencing financial difficulty by the loan portfolio and type of concessions granted during the three months ended March 31, 2023. Each of the types of concessions granted comprised less than 1% of their respective classes of loan portfolios at March 31, 2023. Interest Rate Concession ($ in thousands) Amortized Cost Commercial and industrial $ 47 Auto 61 Home equity 31 Other consumer 498 Total loans modified $ 637 Term Extension ($ in thousands) Amortized Cost Residential mortgage $ 209 Total loans modified $ 209 Combination - Interest Rate Concession and Term Extension ($ in thousands) Amortized Cost Residential mortgage $ 165 Home equity 93 Total loans modified $ 258 The following tables summarize, by loan portfolio, the financial effect of the Corporation's loan modifications on the modified loans as of March 31, 2023: Interest Rate Concession Loan Type Financial Effect, Weighted Average Contractual Interest Rate (Decrease) Increase (a) Commercial and industrial (16) % Auto (2) % Home equity 1 % Other consumer (20) % Total loans modified (b) (17) % (a) Due to market conditions, some interest rate concessions on floating rate loans may involve an increase in rate that was lower in comparison to the rate of increase for floating rate loans not modified. (b) During the three months ended March 31, 2023, interest rate concessions changed the weighted average interest rate on modified loans from 22% to 5%, which primarily consisted of credit cards. Term Extension Loan Type Financial Effect, Weighted Average Term Increase (a) Residential mortgage 26 months Total loans modified 26 months (a) During the three months ended March 31, 2023, term extensions changed the weighted average term on modified loans from 334 months to 360 months. The Corporation closely monitors the performance of loans that are modified to borrowers experiencing financial difficulty to understand the effectiveness of its modification efforts. The following table depicts the performance of loans that have been modified in the last three months at March 31, 2023: Payment Status (Amortized Cost Basis) ($ in thousands) Current 30-89 Days Past Due 90+ Days Past Due Nonaccrual Commercial and industrial $ 47 $ — $ — $ — Residential mortgage 126 — — 248 Auto 61 — — — Home equity 31 — — 93 Other consumer 498 — — — Total loans modified $ 763 $ — $ — $ 341 The following table provides the amortized cost of loan modifications by loan portfolio and type of concession that were modified in the previous three months and subsequently had a payment default, as of March 31, 2023: Amortized Cost of Loan Modifications that Subsequently Defaulted ($ in thousands) Interest Rate Concession Term Extension Combination Interest Rate Reduction and Term Extension Home equity $ — $ — $ 60 The following table presents nonaccrual and performing restructured loans by loan portfolio at December 31, 2022: ($ in thousands) Performing Restructured Loans Nonaccrual Restructured Loans (a) Commercial and industrial $ 12,453 $ — Commercial real estate — owner occupied 316 — Commercial real estate — investor 128 2,074 Real estate construction 195 9 Residential mortgage 16,829 17,117 Home equity 2,148 927 Other consumer 798 — Total restructured loans $ 32,868 $ 20,127 (a) Nonaccrual restructured loans have been included within nonaccrual 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: ($ in thousands) Number of Loans Recorded Investment (a) Unpaid Principal Balance (b) Residential mortgage 24 $ 6,421 $ 6,502 Home equity 3 80 101 Total loans modified 27 $ 6,500 $ 6,603 (a) Represents post-modification outstanding recorded investment. During the three months ended March 31, 2022, restructured loan modifications of commercial loans primarily included maturity date extensions and payment schedule modifications. Restructured loan modifications of consumer loans for the three months ended March 31, 2022 primarily included maturity date extensions, interest rate concessions, non-reaffirmed Chapter 7 bankruptcies, or a combination of these concessions. The following table provides the number of loans modified during the previous twelve months which subsequently defaulted during the three months ended March 31, 2022, and the recorded investment in these restructured loans at the time of default as of March 31, 2022: Three Months Ended March 31, 2022 ($ in thousands) Number of Recorded Residential mortgage 1 $ 884 The nature and extent of the impairment of modified loans, including those which have experienced a subsequent payment default, are considered in the determination of an appropriate level of the ACLL. 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 forecast the Corporation used for March 31, 2023 was the Moody's baseline scenario from February 2023, which was reviewed against the March 2023 baseline scenario with no material updates made, 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 11 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, 2023: ($ in thousands) Dec 31, 2022 Charge offs Recoveries Net Charge offs Provision for credit losses Mar 31, 2023 ACLL / Loans Allowance for loan losses Asset-based lending & equipment finance $ 6,564 $ — $ — $ — $ 2 $ 6,566 Commercial and industrial 112,512 (2,975) 1,216 (1,759) 6,930 117,683 Commercial real estate — owner occupied 9,475 — 3 3 785 10,263 Commercial and business lending 128,551 (2,975) 1,219 (1,756) 7,717 134,512 Commercial real estate — investor 54,398 — — — 412 54,809 Real estate construction 45,589 — 18 18 3,946 49,552 Commercial real estate lending 99,986 — 18 18 4,357 104,362 Total commercial 228,538 (2,975) 1,237 (1,738) 12,075 238,874 Residential mortgage 38,298 (168) 114 (53) 851 39,096 Auto finance 19,619 (1,103) 147 (957) 3,531 22,193 Home equity 14,875 (111) 451 340 (442) 14,774 Other consumer 11,390 (1,144) 263 (881) 986 11,495 Total consumer 84,182 (2,525) 975 (1,550) 4,925 87,557 Total loans $ 312,720 $ (5,501) $ 2,212 $ (3,289) $ 17,000 $ 326,432 Allowance for unfunded commitments Asset-based lending & equipment finance $ 601 $ — $ — $ — $ (103) $ 498 Commercial and industrial 12,396 — — — (123) 12,273 Commercial real estate — owner occupied 103 — — — 146 249 Commercial and business lending 13,101 — — — (80) 13,020 Commercial real estate — investor 710 — — — 159 868 Real estate construction 20,583 — — — 963 21,546 Commercial real estate lending 21,292 — — — 1,122 22,414 Total commercial 34,393 — — — 1,041 35,435 Home equity 2,699 — — — (8) 2,691 Other consumer 1,683 — — — (34) 1,650 Total consumer 4,382 — — — (41) 4,341 Total loans $ 38,776 $ — $ — $ — $ 1,000 $ 39,776 Allowance for credit losses on loans Asset-based lending & equipment finance $ 7,165 $ — $ — $ — $ (102) $ 7,063 1.35 % Commercial and industrial 124,908 (2,975) 1,216 (1,759) 6,808 129,957 1.39 % Commercial real estate — owner occupied 9,579 — 3 3 931 10,513 1.00 % Commercial and business lending 141,652 (2,975) 1,219 (1,756) 7,637 147,533 1.35 % Commercial real estate — investor 55,108 — — — 570 55,678 1.09 % Real estate construction 66,171 — 18 18 4,909 71,098 3.31 % Commercial real estate lending 121,279 — 18 18 5,479 126,776 1.75 % Total commercial 262,931 (2,975) 1,237 (1,738) 13,116 274,309 1.51 % Residential mortgage 38,298 (168) 114 (53) 851 39,096 0.45 % Auto finance 19,619 (1,103) 147 (957) 3,531 22,193 1.43 % Home equity 17,574 (111) 451 340 (449) 17,465 2.86 % Other consumer 13,073 (1,144) 263 (881) 952 13,145 4.71 % Total consumer 88,565 (2,525) 975 (1,550) 4,884 91,898 0.83 % Total loans $ 351,496 $ (5,501) $ 2,212 $ (3,289) $ 18,000 $ 366,208 1.25 % The following table presents a summary of the changes in the ACLL by portfolio segment for the year ended December 31, 2022: ($ in thousands) Dec 31, 2021 Charge offs Recoveries Net Charge offs Provision for credit losses Dec 31, 2022 ACLL / Loans Allowance for loan losses Asset-based lending & equipment finance $ 4,182 $ — $ — $ — $ 2,382 $ 6,564 Commercial and industrial 85,675 (4,491) 5,282 791 26,047 112,512 Commercial real estate — owner occupied 11,473 — 13 13 (2,011) 9,475 Commercial and business lending 101,330 (4,491) 5,295 804 26,418 128,551 Commercial real estate — investor 72,803 (50) 50 — (18,405) 54,398 Real estate construction 37,643 (48) 106 58 7,887 45,589 Commercial real estate lending 110,446 (98) 156 58 (10,518) 99,986 Total commercial 211,776 (4,588) 5,451 862 15,900 228,538 Residential mortgage 40,787 (567) 908 341 (2,830) 38,298 Auto finance 1,999 (1,041) 98 (943) 18,563 19,619 Home equity 14,011 (587) 1,385 798 66 14,875 Other consumer 11,441 (3,363) 1,010 (2,353) 2,301 11,390 Total consumer 68,239 (5,558) 3,401 (2,157) 18,100 84,182 Total loans $ 280,015 $ (10,146) $ 8,852 $ (1,294) $ 34,000 $ 312,720 Allowance for unfunded commitments Asset-based lending & equipment finance $ 857 $ — $ — $ — $ (256) $ 601 Commercial and industrial 17,601 — — — (5,205) 12,396 Commercial real estate — owner occupied 208 — — — (105) 103 Commercial and business lending 18,667 — — — (5,566) 13,101 Commercial real estate — investor 936 — — — (226) 710 Real estate construction 15,586 — — — 4,997 20,583 Commercial real estate lending 16,522 — — — 4,770 21,292 Total commercial 35,189 — — — (796) 34,393 Home equity 2,592 — — — 107 2,699 Other consumer 1,995 — — — (311) 1,683 Total consumer 4,587 — — — (204) 4,382 Total loans $ 39,776 $ — $ — $ — $ (1,000) $ 38,776 Allowance for credit losses on loans Asset-based lending & equipment finance $ 5,040 $ — $ — $ — $ 2,125 $ 7,165 1.56 % Commercial and industrial 103,276 (4,491) 5,282 791 20,842 124,908 1.34 % Commercial real estate — owner occupied 11,681 — 13 13 (2,115) 9,579 0.97 % Commercial and business lending 119,997 (4,491) 5,295 804 20,852 141,652 1.32 % Commercial real estate — investor 73,739 (50) 50 — (18,631) 55,108 1.08 % Real estate construction 53,229 (48) 106 58 12,884 66,171 3.07 % Commercial real estate lending 126,968 (98) 156 58 (5,748) 121,279 1.68 % Total commercial 246,965 (4,588) 5,451 862 15,104 262,931 1.46 % Residential mortgage 40,787 (567) 908 341 (2,830) 38,298 0.45 % Auto finance 1,999 (1,041) 98 (943) 18,563 19,619 1.42 % Home equity 16,603 (587) 1,385 798 173 17,574 2.81 % Other consumer 13,436 (3,363) 1,010 (2,353) 1,990 13,073 4.43 % Total consumer 72,825 (5,558) 3,401 (2,157) 17,896 88,565 0.82 % Total loans $ 319,791 $ (10,146) $ 8,852 $ (1,294) $ 33,000 $ 351,496 1.22 %

Goodwill and Other Intangible A

Goodwill and Other Intangible Assets	3 Months Ended
	Mar. 31, 2023
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 2022, 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 2022 impairment test that have changed the Corporation's impairment assessment conclusion. There were no impairment charges recorded in 2022 or the first three months of 2023. The Corporation had goodwill of $1.1 billion at both March 31, 2023 and December 31, 2022. Core Deposit Intangibles The Corporation has CDIs which are amortized. Changes in the gross carrying amount, accumulated amortization, and net book value for CDIs were as follows: ($ in thousands) Three Months Ended March 31, 2023 Year Ended Dec 31, 2022 Core deposit intangibles Gross carrying amount at the beginning of period $ 88,109 $ 88,109 Accumulated amortization (41,030) (38,827) Net book value $ 47,079 $ 49,282 Amortization during the period $ 2,203 $ 8,811 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 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 11 for a discussion of the recourse provisions on sold residential mortgage loans. See Note 12 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 three months ended March 31, 2023 and the year ended December 31, 2022 is as follows: ($ in thousands) Three Months Ended March 31, 2023 Year Ended Dec 31, 2022 Mortgage servicing rights Mortgage servicing rights at beginning of period $ 77,351 $ 54,862 Cumulative effect of accounting methodology change N/A 2,296 Balance at beginning of period, adjusted $ 77,351 $ 57,158 Additions 474 7,279 Paydowns (1,489) (9,350) Valuation: Change in fair value model assumptions — 5,715 Changes in fair value of asset (1,857) 16,549 Mortgage servicing rights at end of period $ 74,479 $ 77,351 Portfolio of residential mortgage loans serviced for others (“servicing portfolio”) $ 6,611,770 $ 6,711,820 Mortgage servicing rights to servicing portfolio 1.13 % 1.15 % 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, 2023. 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 CDIs and decay for MSRs: ($ in thousands) Core Deposit Intangibles Mortgage Servicing Rights Nine months ended December 31, 2023 $ 6,608 $ 9,713 2024 8,811 12,079 2025 8,811 10,382 2026 8,811 8,924 2027 8,811 7,518 2028 3,485 6,564 Beyond 2028 1,742 19,299 Total estimated amortization expense and MSRs decay $ 47,079 $ 74,479

Short and Long-Term Funding

Short and Long-Term Funding	3 Months Ended
	Mar. 31, 2023
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, 2023 Dec 31, 2022 Short-term funding Federal funds purchased $ 350 $ 344,170 Securities sold under agreements to repurchase 208,048 240,969 Federal funds purchased and securities sold under agreements to repurchase 208,398 585,139 Commercial paper 18,210 20,798 Total short-term funding $ 226,608 $ 605,937 Long-term funding Corporation subordinated notes, at par $ 550,000 $ 250,000 Discount and capitalized costs (8,513) (544) Subordinated debt fair value hedge (a) 2,168 (1,855) Finance leases 448 469 Total long-term funding $ 544,103 $ 248,071 Total short and long-term funding, excluding FHLB advances $ 770,711 $ 854,007 FHLB advances Short-term FHLB advances $ 3,785,000 $ 3,125,000 Long-term FHLB advances 1,208,745 1,209,170 FHLB advances fair value hedge (a) (7,607) (14,308) Total FHLB advances $ 4,986,138 $ 4,319,861 Total short and long-term funding $ 5,756,849 $ 5,173,869 (a) For additional information on the fair value hedges, see Note 9. 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 repurchase agreements to facilitate the needs of its customers. The fair value of securities pledged to secure repurchase agreements may decline. At March 31, 2023, the Corporation had pledged securities valued at 157% 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, 2023 and December 31, 2022 are presented in the following table: Overnight and Continuous ($ in thousands) Mar 31, 2023 Dec 31, 2022 Repurchase agreements Agency mortgage-related securities $ 208,048 $ 240,969 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. In February 2023, the Corporation issued $300 million of 10-year subordinated notes, due March 1, 2033 and redeemable (i) on the reset date of March 1, 2028 and on any interest payment date thereafter, (ii) at any time on or after the three month period prior to the maturity date, and (iii) upon the occurrence of a Regulatory Capital Treatment Event (as defined in the Global Note). The subordinated notes have a fixed coupon interest rate of 6.625% until the reset date, after which the rate will be equal to the Five-Year U.S. Treasury Rate as of the reset date plus 2.812% per annum. The notes were issued at a discount. Finance Leases Finance leases are used in conjunction with branch operations. See Note 16 for additional disclosure regarding the Corporation’s leases.

Derivative and Hedging Activiti

Derivative and Hedging Activities	3 Months Ended
	Mar. 31, 2023
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 values 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 $106 million and $92 million of investment securities as collateral at March 31, 2023 and December 31, 2022, respectively. Cash is often pledged as collateral for derivatives that are not centrally cleared. The Corporation's required cash collateral was approximately $610,000 at March 31, 2023, compared to $3 million at December 31, 2022. 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 and the London Clearing House settles the variation margin daily. As a result, the variation margin payment and the related derivative instruments are considered a single unit of account for accounting and financial reporting purposes. Depending on the net position, the fair value is reported in other assets or accrued expenses and other liabilities on the consolidated balance sheets. The daily settlement of the derivative exposure does not change or reset the contractual terms of the instrument. Fair Value Hedges of Interest Rate Risk The Corporation is exposed to changes in the fair value of its fixed-rate debt due to changes in benchmark interest rates. The Corporation uses interest rate swaps to manage its exposure to changes in fair value on these instruments attributable to changes in the designated benchmark interest rates. Interest rate swaps designated as fair value hedges involve receiving payment of fixed-rate amounts from a counterparty in exchange for the Corporation paying variable-rate payments over the life of the agreements without the exchange of the underlying notional amount. For derivatives designated and that qualify as fair value hedges, as allowed under U.S. GAAP, we applied the "shortcut" method of accounting, which permits the assumption of perfect effectiveness. The gain or loss on the derivative as well as the offsetting loss or gain on the hedged item attributable to the hedged risk are recognized in interest expense. These items, along with the net interest from the derivative, are reported in the same income statement line as the fixed-rate debt expense. Cash Flow Hedges of Interest Rate Risk The Corporation is exposed to variability in cash flows on its floating rate assets due to changes in benchmark interest rates. The Corporation uses interest rate swaps to hedge certain forecasted transactions for the variability in cash flows attributable to the contractually specified interest rate in order to add stability to net interest income and to manage its exposure to interest rate movements. Interest rate swaps designated as cash flow hedges involve receiving fixed-rate amounts from a counterparty in exchange for the Corporation making variable-rate payments over the life of the agreements without the exchange of the underlying notional amount. These items, along with the net interest from the derivative, are reported in the same income statement line as the interest income from the floating-rate assets. When the relationship between the hedged item and hedging instrument is highly effective at achieving offsetting changes in cash flows attributable to the hedged risk, changes in the fair value of these cash flow hedges are recorded in accumulated other comprehensive income (loss) and are subsequently reclassified to interest income as interest payments are made on such variable rate loans. 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 and foreign currency. 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) and foreign currency exchange forwards. See Note 10 for additional information and disclosures on balance sheet offsetting. Interest rate-related and other 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. The Corporation also enters into credit risk participation agreements with financial institution counterparties for interest rate swaps related to loans in which we are either a participant or a lead bank. The risk participation agreements entered into by the Corporation as a participant bank provide credit protection to the financial institution counterparty should the borrower fail to perform on its interest rate derivative contract with that financial institution. 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. Mortgage Derivatives Interest rate lock commitments to originate residential mortgage loans held for sale and forward commitments to sell residential mortgage loans are considered derivative instruments, and the fair value of these commitments 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. Interest rate-related instruments for MSRs hedge: The fair value of the Corporation's MSRs asset changes in response to changes 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 Corporation’s derivatives, as well as the balance sheet netting adjustments as of March 31, 2023 and December 31, 2022. 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, 2023 and December 31, 2022. 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, 2023 Dec 31, 2022 Asset Liability Asset Liability ($ in thousands) Notional Amount Fair Value Notional Amount Fair Value Notional Amount Fair Value Notional Amount Fair Value Designated as hedging instruments: Interest rate-related instruments $ 2,000,000 $ 19,416 $ 850,000 $ — $ 900,000 $ 4,349 $ 1,150,000 $ 1,260 Not designated as hedging instruments: Interest rate-related and other instruments 4,412,666 71,619 4,737,474 199,339 4,246,823 62,401 4,599,391 251,398 Foreign currency exchange forwards 468,094 3,313 454,970 3,194 499,078 1,922 461,134 1,801 Mortgage banking (a) 59,184 338 83,500 441 21,265 86 33,000 46 Total not designated as hedging instruments 75,271 202,974 64,410 253,245 Gross derivatives before netting 94,687 202,974 68,759 254,506 Less: Legally enforceable master netting agreements 8,301 8,301 2,788 2,788 Less: Cash collateral pledged/received 36,331 342 26,898 217 Total derivative instruments, after netting $ 50,056 $ 194,331 $ 39,072 $ 251,500 The following table presents amounts that were recorded on the consolidated balance sheets related to cumulative basis adjustments for fair value hedges: Line Item in the Consolidated Balance Sheets in Which the Hedged Item is Included Carrying Amount of the Hedged Assets/(Liabilities) Cumulative Amount of Fair Value Hedging Adjustment Included in the Carrying Amount of the Hedged Assets/(Liabilities) Carrying Amount of the Hedged Assets/(Liabilities) Cumulative Amount of Fair Value Hedging Adjustment Included in the Carrying Amount of the Hedged Assets/(Liabilities) ($ in thousands) March 31, 2023 December 31, 2022 Other long-term funding $ (552,168) $ (2,168) $ (248,145) $ 1,855 FHLB Advances (592,393) 7,607 (585,692) 14,308 Total $ (1,144,561) $ 5,439 $ (833,837) $ 16,163 The Corporation terminated its $500 million fair value hedge during the fourth quarter of 2019. At March 31, 2023, the amortized cost basis of the closed portfolios which had previously been used in the terminated hedging relationship was $315 million and is included in loans on the consolidated balance sheets. This amount includes $1 million of hedging adjustments on the discontinued hedging relationships, which are not presented in the table above. The table below identifies the effect of fair value and cash flow hedge accounting on the Corporation's consolidated statements of income for the three months ended March 31, 2023 and 2022: Location and Amount Recognized on the Consolidated Statements of Income in Three months ended Mar 31, 2023 2022 ($ in thousands) Interest Income Interest Expense Interest Income Total amounts of income presented on the consolidated statements of income in which the effects of the fair value or cash flow hedges are recorded (a) $ (1,321) $ 2,515 $ (179) The effects of fair value and cash flow hedging: Impact on fair value hedging relationships in Subtopic 815-20 Interest contracts: Hedged items (59) 10,724 (179) Derivatives designated as hedging instruments (a) (1,262) (8,209) — (a) Includes net settlements on the derivatives. The following table presents the effect of cash flow hedge accounting on accumulated other comprehensive income (loss) for the three months ended March 31, 2023 and 2022: Three Months Ended Mar 31, ($ in thousands) 2023 2022 Interest rate-related instruments designated as cash flow hedging instruments Amount of gain recognized in OCI on cash flow hedge derivative (a) $ 13,763 $ — Amount of loss reclassified from accumulated other comprehensive income (loss) into interest income (a) 1,262 — (a) The entirety of gains recognized in OCI as well as the losses reclassified from accumulated other comprehensive income (loss) into interest income were included components in the assessment of hedge effectiveness. Amounts reported in accumulated other comprehensive income (loss) related to cash flow hedge derivatives are reclassified to interest income as interest payments are made on the hedged variable interest rate assets. The Corporation estimates that $6 million will be reclassified as a decrease to interest income over the next 12 months. This amount could differ from amounts actually recognized due to changes in interest rates, hedge de-designations, or the addition of other hedges subsequent to March 31, 2023. The maximum length of time over which the Corporation is hedging its exposure to the variability in future cash flows is 44 months as of March 31, 2023. The table below identifies the effect of derivatives not designated as hedging instruments on the Corporation's consolidated statements of income for the three months ended March 31, 2023 and 2022: Consolidated Statements of Income Category of Gain / (Loss) Three Months Ended Mar 31, ($ in thousands) 2023 2022 Derivative instruments Interest rate-related and other instruments — customer and mirror, net Capital markets, net $ (70) $ 558 Interest rate-related instruments — MSRs hedge Mortgage banking, net 2,521 (3,666) Foreign currency exchange forwards Capital markets, net (2) 123 Interest rate lock commitments (mortgage) Mortgage banking, net 252 (2,842) Forward commitments (mortgage) Mortgage banking, net (395) 4,757

Balance Sheet Offsetting

Balance Sheet Offsetting	3 Months Ended
	Mar. 31, 2023
Offsetting [Abstract]
Balance Sheet Offsetting	Balance Sheet Offsetting Interest Rate-Related Instruments and Foreign Exchange Forwards (“Interest 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. The Corporation is party to master netting arrangements with some of 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. For disclosure purposes, the net position on the consolidated balance sheets can be further netted down by investment securities collateral received or pledged. See Note 9 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, 2023 and December 31, 2022. The interest and foreign exchange agreements the Corporation has with its commercial customers are not subject to an enforceable master netting arrangement and are therefore excluded from this table: Gross Amounts Recognized Gross Amounts Subject to Master Netting Arrangements Offset on the Consolidated Balance Sheets Net Amounts Presented on the Consolidated Balance Sheets Gross Amounts Not Offset on the Consolidated Balance Sheets ($ in thousands) Derivative Cash Collateral Received Security Collateral Received Net Derivative assets March 31, 2023 $ 78,018 $ (8,301) $ (36,331) $ 33,387 $ (32,827) $ 560 December 31, 2022 63,029 (2,788) (26,898) 33,342 (30,753) 2,589 Gross Amounts Recognized Gross Amounts Subject to Master Netting Arrangements Offset on the Consolidated Balance Sheets Net Amounts Presented on the Consolidated Balance Sheets Gross Amounts Not Offset on the Consolidated Balance Sheets ($ in thousands) Derivative Cash Collateral Pledged Security Collateral Pledged Net Derivative liabilities March 31, 2023 $ 8,676 $ (8,301) $ (342) $ 34 $ — $ 34 December 31, 2022 3,096 (2,788) (217) 91 — 91

Commitments, Off-Balance Sheet

Commitments, Off-Balance Sheet Arrangements, Legal Proceedings and Regulatory Matters	3 Months Ended
	Mar. 31, 2023
Commitments and Contingencies Disclosure [Abstract]
Commitments, Off-Balance Sheet Arrangements, Legal Proceedings and Regulatory Matters	Commitments, Off-Balance Sheet Arrangements, Legal Proceedings, and Regulatory Matters The Corporation utilizes a variety of financial instruments in the normal course of business to meet the financial needs of its customers and to manage its own exposure to fluctuations in interest rates. These financial instruments include lending-related and other commitments (see below) as well as derivative instruments (see Note 9). The following is a summary of lending-related commitments: ($ in thousands) Mar 31, 2023 Dec 31, 2022 Commitments to extend credit, excluding commitments to originate residential mortgage loans held for sale (a)(b) $ 11,919,626 $ 12,444,275 Commercial letters of credit (a) 5,413 3,188 Standby letters of credit (c) 251,565 270,692 (a) These off-balance sheet financial instruments are exercisable at the market rate prevailing at the date the underlying transaction will be completed and, thus, are deemed to have no current fair value, or the fair value is based on fees currently charged to enter into similar agreements and was not material at March 31, 2023 or December 31, 2022. (b) Interest rate lock commitments to originate residential mortgage loans held for sale are considered derivative instruments and are disclosed in Note 9. (c) Standby letters of credit are presented excluding participations. The Corporation has established a liability of $3 million at both March 31, 2023 and December 31, 2022, as an estimate of the fair value of these financial instruments. Lending-related Commitments As a financial services provider, the Corporation routinely enters into commitments to extend credit. Such commitments are subject to the same credit policies and approval process accorded to loans made by the Corporation, with each customer’s creditworthiness evaluated on a case-by-case basis. The commitments generally have fixed expiration dates or other termination clauses and may require the payment of a fee. The Corporation’s exposure to credit loss in the event of nonperformance by the other party to these financial instruments is represented by the contractual amount of those instruments. The amount of collateral obtained, if deemed necessary by the Corporation upon extension of credit, is based on management’s credit evaluation of the customer. Since a significant portion of commitments to extend credit are subject to specific restrictive loan covenants or may expire without being drawn upon, the total commitment amounts do not necessarily represent future cash flow requirements. An allowance for unfunded commitments is maintained at a level believed by management to be sufficient to absorb expected lifetime losses related to unfunded commitments (including unfunded loan commitments and letters of credit). The following table presents a summary of the changes in the allowance for unfunded commitments: ($ in thousands) Three Months Ended March 31, 2023 Year Ended December 31, 2022 Allowance for unfunded commitments Balance at beginning of period $ 38,776 $ 39,776 Provision for unfunded commitments 1,000 (1,000) Balance at end of period $ 39,776 $ 38,776 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 to sell residential mortgage loans are considered derivative instruments, and the fair value of these commitments is recorded in other assets and accrued expenses and other liabilities on the consolidated balance sheets. The Corporation’s derivative and hedging activity is further described in Note 9. 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, 2023 was $241 million, compared to $250 million at December 31, 2022, 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 $9 million and $8 million for the three months ended March 31, 2023 and March 31, 2022, respectively. The Corporation's remaining investment in qualified affordable housing projects accounted for under the proportional amortization method totaled $237 million at March 31, 2023 and $246 million at December 31, 2022. The Corporation’s unfunded equity contributions relating to investments in qualified affordable housing and historic projects are recorded in accrued expenses and other liabilities on the consolidated balance sheets. The Corporation’s remaining unfunded equity contributions totaled $34 million at March 31, 2023 and $40 million at December 31, 2022. Additionally, at March 31, 2023, the Corporation also invests in a private SBA loan fund, recorded in equity securities on the consolidated balance sheets, the purpose of which is to identify CRA qualifying loans within a target region, which has a remaining unfunded equity contribution of $5 million. For the three months ended March 31, 2023 and the year ended December 31, 2022, 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 $28 million at March 31, 2023 and $27 million December 31, 2022, included in tax credit and other investments on the consolidated balance sheets. Legal Proceedings The Corporation is party to various pending and threatened claims and legal proceedings arising in the normal course of business activities, some of which involve claims for substantial amounts. Although there can be no assurance as to the ultimate outcomes, the Corporation believes it has meritorious defenses to the claims asserted against it in its currently outstanding matters and intends to continue to defend itself vigorously with respect to such legal proceedings. The Corporation will consider settlement of cases when, in management’s judgment, it is in the best interests of the Corporation and its shareholders. On at least a quarterly basis, the Corporation assesses its liabilities and contingencies in connection with all pending or threatened claims and litigation, utilizing the most recent information available. On a matter by matter basis, an accrual for loss is established for those matters which the Corporation believes it is probable that a loss may be incurred and that the amount of such loss can be reasonably estimated. Once established, each accrual is adjusted as appropriate to reflect any subsequent developments. Accordingly, management’s estimate will change from time to time, and actual losses may be more or less than the current estimate. For matters where a loss is not probable, or the amount of the loss cannot be estimated, no accrual is established. Resolution of legal claims is inherently unpredictable, and in many legal proceedings various factors exacerbate this inherent unpredictability, including where the damages sought are unsubstantiated or indeterminate, it is unclear whether a case brought as a class action will be allowed to proceed on that basis, discovery is not complete, the proceeding is not yet in its final stages, the matters present legal uncertainties, there are significant facts in dispute, there are a large number of parties (including where it is uncertain how liability, if any, will be shared among multiple defendants), or there is a wide range of potential results. The Corporation believes that the legal proceedings currently pending against it should not have a material adverse effect on the Corporation’s consolidated financial condition. The Corporation notes, however, that in light of the uncertainties involved in such proceedings, there is no assurance that the ultimate resolution of these matters will not significantly exceed the reserves it has currently accrued or that a matter will not have material reputational consequences. As a result, the outcome of a particular matter may be material to the Corporation’s operating results for a particular period, depending on, among other factors, the size of the loss or liability imposed and the level of the Corporation’s income for that period. 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 in regard to these consumer products. The Bank could also determine of its own accord, or be required by regulators, to refund or otherwise make remediation payments to customers in connection with these products. It is not possible at this time for management to assess the probability of a material adverse outcome or reasonably estimate the amount of any potential loss related to such matters. Mortgage Repurchase Reserve The Corporation sells residential mortgage loans to investors in the normal course of business. Residential mortgage loans sold to others are predominantly conventional residential first lien mortgages originated under the Corporation's usual underwriting procedures, and are most often sold on a nonrecourse basis, primarily to the GSEs. The Corporation’s agreements to sell residential mortgage loans in the normal course of business usually require certain representations and warranties on the underlying loans sold, related to credit information, loan documentation, collateral, and insurability. Subsequent to being sold, if a material underwriting deficiency or documentation defect is discovered, the Corporation may be obligated to repurchase the loan or reimburse the GSEs for losses incurred (collectively, “make whole requests”). The make whole requests and any related risk of loss under the representations and warranties are largely driven by borrower performance. The Corporation also sells qualifying residential mortgage loans guaranteed by U.S. government agencies into GNMA pools. As a result of make whole requests, the Corporation has repurchased loans with aggregate principal balances of $2 million and $6 million for the three months ended March 31, 2023 and the year ended December 31, 2022, respectively. There were no loss reimbursement and settlement claims paid in the three months ended March 31, 2023, and no such claims were paid for the year ended December 31, 2022. Make whole requests since January 1, 2022 generally arose from loans originated since January 1, 2021 with such balances totaling $2.5 billion at the time of sale, consisting primarily of loans sold to GSEs. As of March 31, 2023, $2.1 billion of those loans originated since January 1, 2021 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 approximately $566,000 at March 31, 2023 and $1 million at December 31, 2022. 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 both March 31, 2023 and December 31, 2022, there were $7 million 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, 2023 and December 31, 2022, there were $18 million and $19 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, 2023
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 2022 Annual Report on Form 10-K. The table below presents the Corporation’s financial instruments measured at fair value on a recurring basis as of March 31, 2023 and December 31, 2022, aggregated by the level in the fair value hierarchy within which those measurements fall: ($ in thousands) Fair Value Hierarchy Mar 31, 2023 Dec 31, 2022 Assets AFS investment securities: U.S. Treasury securities Level 1 $ 111,743 $ 109,378 Agency securities Level 2 13,730 13,532 Obligations of state and political subdivisions (municipal securities) Level 2 228,902 230,714 Residential mortgage-related securities: FNMA / FHLMC Level 2 1,574,578 1,604,610 GNMA Level 2 1,095,588 497,596 Commercial mortgage-related securities: FNMA / FHLMC Level 2 17,618 17,142 GNMA Level 2 189,466 110,462 Asset backed securities: FFELP Level 2 143,084 151,191 SBA Level 2 3,983 4,477 Other debt securities Level 2 2,918 2,922 Total AFS investment securities Level 1 $ 111,743 $ 109,378 Total AFS investment securities Level 2 3,269,864 2,632,647 Equity securities with readily determinable fair values Level 1 6,286 5,991 Residential loans held for sale Level 2 35,742 20,383 Mortgage servicing rights, net Level 3 74,479 77,351 Interest rate-related instruments designated as hedging instruments (a) Level 2 19,416 4,349 Interest rate-related and other instruments not designated as hedging instruments (a) Level 2 71,619 62,401 Foreign currency exchange forwards (a) Level 2 3,313 1,922 Interest rate lock commitments to originate residential mortgage loans held for sale Level 3 338 86 Liabilities Interest rate-related instruments designated as hedging instruments (a) Level 2 $ — $ 1,260 Interest rate-related and other instruments not designated as hedging instruments (a) Level 2 199,339 251,398 Foreign currency exchange forwards (a) Level 2 3,194 1,801 Forward commitments to sell residential mortgage loans Level 3 441 46 (a) Figures are presented gross before netting. See Note 9 and Note 10 for information relating to the impact of offsetting derivative assets and liabilities and cash collateral with the The table below presents a rollforward of the consolidated balance sheets amounts for the three months ended March 31, 2023 and the year ended December 31, 2022, for the Corporation's mortgage derivatives measured on a recurring basis and classified within Level 3 of the fair value hierarchy: ($ in thousands) Interest rate lock commitments to originate residential mortgage loans held for sale Forward commitments to sell residential mortgage loans Total Balance December 31, 2021 $ 2,617 $ (30) $ 2,647 New production 10,442 (2,028) 12,470 Closed loans / settlements (913) 24,766 (25,679) Other (12,060) (22,662) 10,603 Change in mortgage derivative (2,531) 76 (2,607) Balance December 31, 2022 $ 86 $ 46 $ 40 New production $ 1,134 $ (294) $ 1,429 Closed loans / settlements (570) 46 (616) Other (312) 644 (956) Change in mortgage derivative 252 395 (143) Balance March 31, 2023 $ 338 $ 441 $ (103) The following table presents the carrying value of equity securities without readily determinable fair values still held as of March 31, 2023 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, 2023: ($ in thousands) Equity securities without readily determinable fair values Carrying value as of December 31, 2022 $ 19,225 Carrying value changes — Purchases 5,003 Sales — Carrying value as of March 31, 2023 $ 24,228 Cumulative upward carrying value changes between January 1, 2018 and March 31, 2023 $ 19,134 Cumulative downward carrying value changes/impairment between January 1, 2018 and March 31, 2023 $ — 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: ($ in thousands) Fair Value Hierarchy Fair Value Consolidated Statements of Income Category of Adjustment Recognized in Income Adjustment Recognized on the Consolidated Statements of Income (a) March 31, 2023 Assets Individually evaluated loans Level 3 $ 35,499 Provision for credit losses $ 4,608 OREO (b) Level 2 70 Other noninterest expense / provision for credit losses (c) 46 December 31, 2022 Assets Individually evaluated loans Level 3 $ 23,584 Provision for credit losses $ 4,405 OREO (b) Level 2 2,196 Other noninterest expense / provision for credit losses (c) 971 Equity securities without readily determinable fair values Level 3 19,134 Investment securities gains (losses), net 5,690 (a) Includes the full year impact on the consolidated statements of income. 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 table below presents the unobservable inputs that are readily quantifiable pertaining to Level 3 measurements: March 31, 2023 Valuation Technique Significant Unobservable Input Range of Inputs Weighted Average Input Applied Mortgage servicing rights Discounted cash flow Option adjusted spread 6% - 9% 7% Mortgage servicing rights Discounted cash flow Constant prepayment rate —% - 100% 7% Individually evaluated loans Appraisals / Discounted cash flow Collateral / Discount factor 25% - 48% 35% Interest rate lock commitments to originate residential mortgage loans held for sale Discounted cash flow Closing Ratio 5% - 100% 74% 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, 2023 Dec 31, 2022 ($ in thousands) Fair Value Hierarchy Level Carrying Amount Fair Value Carrying Amount Fair Value Financial assets Cash and due from banks Level 1 $ 311,269 $ 311,269 $ 436,952 $ 436,952 Interest-bearing deposits in other financial institutions Level 1 511,116 511,116 156,693 156,693 Federal funds sold and securities purchased under agreements to resell Level 1 455 455 27,810 27,810 AFS investment securities Level 1 111,743 111,743 109,378 109,378 AFS investment securities Level 2 3,269,864 3,269,864 2,632,647 2,632,647 HTM investment securities, net Level 1 999 947 999 936 HTM investment securities, net Level 2 3,966,060 3,480,530 3,959,399 3,400,028 Equity securities with readily determinable fair values Level 1 6,286 6,286 5,991 5,991 Equity securities without readily determinable fair values Level 2 5,000 5,000 — — Equity securities without readily determinable fair values Level 3 19,228 19,228 19,225 19,225 FHLB and Federal Reserve Bank stocks Level 2 331,420 331,420 295,496 295,496 Residential loans held for sale Level 2 35,742 35,742 20,383 20,383 Commercial loans held for sale Level 2 33,490 33,490 — — Loans, net Level 3 28,880,640 27,921,022 28,486,849 27,481,426 Bank and corporate owned life insurance Level 2 677,328 677,328 676,530 676,530 Mortgage servicing rights, net Level 3 74,479 74,479 77,351 77,351 Derivatives (other assets) (a) Level 2 94,349 94,349 68,672 68,672 Interest rate lock commitments to originate residential mortgage loans held for sale (other assets) Level 3 338 338 86 86 Financial liabilities Noninterest-bearing demand, savings, interest-bearing demand, and money market accounts Level 3 $ 27,393,908 $ 27,393,908 $ 27,705,996 $ 27,705,996 Brokered CDs and other time deposits (b) Level 2 2,937,916 2,937,916 1,930,158 1,930,158 Short-term funding Level 2 226,608 226,600 605,937 605,205 FHLB advances Level 2 4,986,138 4,987,658 4,319,861 4,322,264 Other long-term funding Level 2 544,103 535,836 248,071 242,151 Standby letters of credit (c) Level 2 2,717 2,717 2,881 2,881 Derivatives (accrued expenses and other liabilities) (a) Level 2 202,533 202,533 254,459 254,459 Forward commitments to sell residential mortgage loans (accrued expenses and other liabilities) Level 3 441 441 46 46 (a) Figures are presented gross before netting. See Note 9 and Note 10 for information relating to the impact of offsetting derivative assets and liabilities and cash collateral with the

Retirement Plans

Retirement Plans	3 Months Ended
	Mar. 31, 2023
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, 2023 and 2022 were as follows: Three Months Ended Mar 31, ($ in thousands) 2023 2022 RAP Service cost $ 796 $ 923 Interest cost 2,686 1,772 Expected return on plan assets (8,202) (6,736) Amortization of prior service cost (63) (63) Amortization of actuarial loss 37 74 Total net periodic pension cost $ (4,746) $ (4,029) Postretirement Plan Interest cost $ 20 $ 13 Amortization of prior service cost (19) (19) Amortization of actuarial loss (gain) (7) — Total net periodic benefit cost $ (7) $ (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, 2023 and 2022.

Segment Reporting

Segment Reporting	3 Months Ended
	Mar. 31, 2023
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 2022 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 2022 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, when applicable, 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 2022 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. 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). Information about the Corporation’s segments is presented below: Corporate and Commercial Specialty Three Months Ended Mar 31, ($ in thousands) 2023 2022 Net interest income $ 219,123 $ 90,633 Net intersegment interest income (expense) (80,980) 8,525 Segment net interest income 138,143 99,158 Noninterest income 32,715 37,728 Total revenue 170,858 136,886 Provision for credit losses 13,782 12,653 Noninterest expense 62,061 56,528 Income before income taxes 95,015 67,705 Income tax expense 17,737 12,307 Net income $ 77,278 $ 55,399 Allocated goodwill $ 525,836 $ 525,836 Community, Consumer, and Business Three Months Ended Mar 31, ($ in thousands) 2023 2022 Net interest income $ 80,284 $ 69,544 Net intersegment interest income 88,079 18,833 Segment net interest income 168,363 88,377 Noninterest income 25,949 33,207 Total revenue 194,312 121,584 Provision for credit losses 6,758 4,656 Noninterest expense 111,694 98,461 Income before income taxes 75,860 18,466 Income tax expense 15,931 3,878 Net income $ 59,930 $ 14,588 Allocated goodwill $ 579,156 $ 579,156 Risk Management and Shared Services Three Months Ended Mar 31, ($ in thousands) 2023 2022 Net interest income $ (25,397) $ 27,570 Net intersegment (expense) (7,099) (27,358) Segment net interest income (loss) (32,496) 212 Noninterest income 3,409 3,532 Total revenue (29,087) 3,744 Provision for credit losses (2,568) (21,300) Noninterest expense 13,658 18,303 Income (loss) before income taxes (40,176) 6,741 Income tax expense (benefit) (6,328) 2,465 Net income (loss) $ (33,848) $ 4,275 Allocated goodwill $ — $ — Consolidated Total Three Months Ended Mar 31, ($ in thousands) 2023 2022 Net interest income $ 274,010 $ 187,747 Net intersegment interest income — — Segment net interest income 274,010 187,747 Noninterest income 62,073 74,467 Total revenue 336,083 262,214 Provision for credit losses 17,971 (3,990) Noninterest expense 187,412 173,292 Income before income taxes 130,700 92,912 Income tax expense 27,340 18,650 Net income $ 103,360 $ 74,262 Allocated goodwill $ 1,104,992 $ 1,104,992

Accumulated Other Comprehensive

Accumulated Other Comprehensive Income (Loss)	3 Months Ended
	Mar. 31, 2023
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, 2023 and 2022, including changes during the preceding three month periods as well as any reclassifications out of accumulated other comprehensive income (loss): ($ in thousands) AFS Investment Cash Flow Hedge Derivatives Defined Benefit Accumulated Balance December 31, 2022 $ (233,192) $ 3,360 $ (42,968) $ (272,799) Other comprehensive income before reclassifications 36,478 — — 36,478 Amounts reclassified from accumulated other comprehensive income (loss): HTM investment securities, net, at amortized cost 2,267 — — 2,267 Other assets / accrued expenses and other liabilities — 13,763 — 13,763 Interest income — 1,262 — 1,262 Personnel expense — — (81) (81) Other expense — — 30 30 Income tax (expense) benefit (9,892) (4,694) 79 (14,507) Net other comprehensive income during period 28,853 10,331 27 39,211 Balance March 31, 2023 $ (204,339) $ 13,691 $ (42,940) $ (233,588) 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) HTM investment securities, 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)

Leases

Leases	3 Months Ended
	Mar. 31, 2023
Leases [Abstract]
Leases	Leases The Corporation has operating leases for retail and corporate office, land, and equipment. The Corporation also has a finance lease for retail and corporate offices. These leases have original terms of 1 year or longer with remaining maturities up to 40 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) 2023 2022 Operating lease costs $ 1,464 $ 1,798 Finance lease costs 23 41 Operating lease cash flows 1,828 2,407 Finance lease cash flows 22 44 The lease classifications on the consolidated balance sheets were as follows: ($ in thousands) Consolidated Balance Sheets Category Mar 31, 2023 Dec 31, 2022 Operating lease right-of-use asset Premises and equipment $ 24,377 $ 25,617 Finance lease right-of-use asset Other assets 433 455 Operating lease liability Accrued expenses and other liabilities 26,938 28,357 Finance lease liability Other long-term funding 448 469 The lease payment obligations, weighted-average remaining lease term, and weighted-average original discount rate were as follows: Mar 31, 2023 Dec 31, 2022 ($ 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 Retail and corporate offices $ 24,738 5.76 2.63 % $ 26,140 5.92 2.62 % Land 4,569 7.44 3.15 % 4,766 7.59 3.14 % Equipment — 0.00 — % — 0.00 — % Total operating leases $ 29,307 6.01 2.71 % $ 30,906 6.17 2.70 % Finance leases Retail and corporate offices $ 463 5.00 1.32 % $ 485 5.25 1.32 % Total finance leases $ 463 5.00 1.32 % $ 485 5.25 1.32 % 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, 2023 $ 4,540 $ 69 $ 4,609 2024 5,735 93 5,827 2025 4,512 93 4,605 2026 4,246 93 4,339 2027 3,807 93 3,899 Beyond 2027 6,468 23 6,491 Total lease payments $ 29,307 $ 463 $ 29,770 Less: interest 2,369 15 2,384 Present value of lease payments $ 26,938 $ 448 $ 27,386

Summary of Significant Accoun_2

Summary of Significant Accounting Policies (Policies)	3 Months Ended
	Mar. 31, 2023
Accounting Standards Update and Change in Accounting Principle [Abstract]
New Accounting Pronouncements Adopted	New Accounting Pronouncements Adopted Standard Description Date of 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 did not have a material impact on the Corporation's results of operation, financial position or liquidity, but resulted in additional disclosure requirements related to gross charge offs by vintage year and the removal of TDR disclosures, replaced by additional disclosures on the types of modifications of loans to borrowers experiencing financial difficulties. The Corporation has adopted this update prospectively.
Future Accounting Pronouncements	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, liquidity or disclosures, the impacts are discussed in the applicable sections of this financial review. Standard Description Date of anticipated adoption Effect on financial statements ASU 2023-02 Investments-Equity Method and Joint Ventures (Topic 323): Accounting for Investments in Tax Credit Structures Using the Proportional Amortization Method The amendments in this update permit reporting entities to elect to account for their tax equity investments, regardless of the tax credit program from which the income tax credits are received, using the proportional amortization method if certain conditions are met. A reporting entity may make an accounting policy election to apply the proportional amortization method on a tax-credit-program-by-tax-credit-program basis rather than electing to apply the proportional amortization method at the reporting entity level or to individual investments. The amendments in this update also remove certain guidance for Qualified Affordable Housing Project investments and require the application of the delayed equity contribution guidance to all tax equity investments. The amendments in this update are effective for fiscal years beginning after December 15, 2023, and must be applied on either a modified retrospective or a retrospective basis. Early adoption is permitted in any interim period, however if adopted in an interim period the entity shall adopt the amendments in this update as of the beginning of the fiscal year that includes the interim period. 1st Quarter 2024 The Corporation is currently evaluating the impact on its results of operation, financial position, liquidity, and disclosures.

Earnings Per Common Share (Tabl

Earnings Per Common Share (Tables)	3 Months Ended
	Mar. 31, 2023
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) 2023 2022 Net income $ 103,360 $ 74,262 Preferred stock dividends (2,875) (2,875) Net income available to common equity $ 100,485 $ 71,387 Common shareholder dividends (31,808) (30,372) Unvested share-based payment awards (205) (211) Undistributed earnings $ 68,472 $ 40,804 Undistributed earnings allocated to common shareholders $ 68,086 $ 40,548 Undistributed earnings allocated to unvested share-based payment awards 386 256 Undistributed earnings $ 68,472 $ 40,804 Basic Distributed earnings to common shareholders $ 31,808 $ 30,372 Undistributed earnings allocated to common shareholders 68,086 40,548 Total common shareholders earnings, basic $ 99,894 $ 70,920 Diluted Distributed earnings to common shareholders $ 31,808 $ 30,372 Undistributed earnings allocated to common shareholders 68,086 40,548 Total common shareholders earnings, diluted $ 99,894 $ 70,920 Weighted average common shares outstanding 149,763 148,781 Effect of dilutive common stock awards 1,365 1,711 Diluted weighted average common shares outstanding 151,128 150,492 Basic earnings per common share $ 0.67 $ 0.48 Diluted earnings per common share $ 0.66 $ 0.47

Stock-Based Compensation (Table

Stock-Based Compensation (Tables)	3 Months Ended
	Mar. 31, 2023
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, 2023 is presented below: Stock Options Shares (a) Weighted Average Weighted Average Remaining Contractual Term Aggregate Intrinsic Value (a) Outstanding at December 31, 2022 3,994 $ 21.06 5.11 years $ 10,525 Exercised 34 17.07 Forfeited or expired — — Outstanding at March 31, 2023 3,960 $ 21.10 4.87 years $ 1,039 Options Exercisable at March 31, 2023 3,746 $ 21.27 4.75 years $ 887 (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, 2023: Restricted Stock Shares (a) Weighted Average Outstanding at December 31, 2022 2,303 $ 20.81 Granted 813 22.67 Vested 630 20.99 Forfeited 2 21.92 Outstanding at March 31, 2023 2,484 $ 21.38 (a) In thousands

Investment Securities (Tables)

Investment Securities (Tables)	3 Months Ended
	Mar. 31, 2023
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, 2023 were as follows: ($ in thousands) Amortized Gross Gross Fair Value AFS investment securities U. S. Treasury securities $ 124,478 $ — $ (12,735) $ 111,743 Agency securities 15,000 — (1,271) 13,730 Obligations of state and political subdivisions (municipal securities) 230,673 291 (2,063) 228,902 Residential mortgage-related securities: FNMA/FHLMC 1,768,846 260 (194,529) 1,574,578 GNMA 1,092,742 7,273 (4,427) 1,095,588 Commercial mortgage-related securities: FNMA/FHLMC 18,952 — (1,335) 17,618 GNMA 194,550 17 (5,101) 189,466 Asset backed securities: FFELP 147,876 — (4,791) 143,084 SBA 4,020 13 (50) 3,983 Other debt securities 3,000 — (82) 2,918 Total AFS investment securities $ 3,600,137 $ 7,854 $ (226,383) $ 3,381,607 HTM investment securities U. S. Treasury securities $ 999 $ — $ (51) $ 947 Obligations of state and political subdivisions (municipal securities) 1,720,177 4,888 (146,544) 1,578,521 Residential mortgage-related securities: FNMA/FHLMC 981,065 30,284 (163,514) 847,835 GNMA 53,298 195 (2,897) 50,596 Private-label 361,170 11,242 (71,147) 301,265 Commercial mortgage-related securities: FNMA/FHLMC 785,516 14,657 (156,369) 643,803 GNMA 64,859 502 (6,826) 58,536 Total HTM investment securities $ 3,967,083 $ 61,768 $ (547,349) $ 3,481,502 The amortized cost and fair values of AFS and HTM securities at December 31, 2022 were as follows: ($ in thousands) Amortized Gross Gross Fair Value AFS investment securities U. S. Treasury securities $ 124,441 $ — $ (15,063) $ 109,378 Agency securities 15,000 — (1,468) 13,532 Obligations of state and political subdivisions (municipal securities) 235,693 96 (5,074) 230,714 Residential mortgage-related securities: FNMA/FHLMC 1,820,642 404 (216,436) 1,604,610 GNMA 502,537 314 (5,255) 497,596 Commercial mortgage-related securities: FNMA/FHLMC 19,038 — (1,896) 17,142 GNMA 115,031 — (4,569) 110,462 Asset backed securities: FFELP 157,138 — (5,947) 151,191 SBA 4,512 15 (51) 4,477 Other debt securities 3,000 — (78) 2,922 Total AFS investment securities $ 2,997,032 $ 830 $ (255,837) $ 2,742,025 HTM investment securities U. S. Treasury securities $ 999 $ — $ (62) $ 936 Obligations of state and political subdivisions (municipal securities) 1,732,351 1,994 (182,697) 1,551,647 Residential mortgage-related securities: FNMA/FHLMC 961,231 31,301 (175,760) 816,771 GNMA 52,979 85 (3,436) 49,628 Private-label 364,728 11,697 (72,920) 303,505 Commercial mortgage-related securities: FNMA/FHLMC 778,796 15,324 (178,281) 615,839 GNMA 69,369 577 (7,254) 62,691 Total HTM investment securities $ 3,960,451 $ 60,978 $ (620,411) $ 3,401,018
Investment securities held to maturity	The amortized cost and fair values of AFS and HTM securities at March 31, 2023 were as follows: ($ in thousands) Amortized Gross Gross Fair Value AFS investment securities U. S. Treasury securities $ 124,478 $ — $ (12,735) $ 111,743 Agency securities 15,000 — (1,271) 13,730 Obligations of state and political subdivisions (municipal securities) 230,673 291 (2,063) 228,902 Residential mortgage-related securities: FNMA/FHLMC 1,768,846 260 (194,529) 1,574,578 GNMA 1,092,742 7,273 (4,427) 1,095,588 Commercial mortgage-related securities: FNMA/FHLMC 18,952 — (1,335) 17,618 GNMA 194,550 17 (5,101) 189,466 Asset backed securities: FFELP 147,876 — (4,791) 143,084 SBA 4,020 13 (50) 3,983 Other debt securities 3,000 — (82) 2,918 Total AFS investment securities $ 3,600,137 $ 7,854 $ (226,383) $ 3,381,607 HTM investment securities U. S. Treasury securities $ 999 $ — $ (51) $ 947 Obligations of state and political subdivisions (municipal securities) 1,720,177 4,888 (146,544) 1,578,521 Residential mortgage-related securities: FNMA/FHLMC 981,065 30,284 (163,514) 847,835 GNMA 53,298 195 (2,897) 50,596 Private-label 361,170 11,242 (71,147) 301,265 Commercial mortgage-related securities: FNMA/FHLMC 785,516 14,657 (156,369) 643,803 GNMA 64,859 502 (6,826) 58,536 Total HTM investment securities $ 3,967,083 $ 61,768 $ (547,349) $ 3,481,502 The amortized cost and fair values of AFS and HTM securities at December 31, 2022 were as follows: ($ in thousands) Amortized Gross Gross Fair Value AFS investment securities U. S. Treasury securities $ 124,441 $ — $ (15,063) $ 109,378 Agency securities 15,000 — (1,468) 13,532 Obligations of state and political subdivisions (municipal securities) 235,693 96 (5,074) 230,714 Residential mortgage-related securities: FNMA/FHLMC 1,820,642 404 (216,436) 1,604,610 GNMA 502,537 314 (5,255) 497,596 Commercial mortgage-related securities: FNMA/FHLMC 19,038 — (1,896) 17,142 GNMA 115,031 — (4,569) 110,462 Asset backed securities: FFELP 157,138 — (5,947) 151,191 SBA 4,512 15 (51) 4,477 Other debt securities 3,000 — (78) 2,922 Total AFS investment securities $ 2,997,032 $ 830 $ (255,837) $ 2,742,025 HTM investment securities U. S. Treasury securities $ 999 $ — $ (62) $ 936 Obligations of state and political subdivisions (municipal securities) 1,732,351 1,994 (182,697) 1,551,647 Residential mortgage-related securities: FNMA/FHLMC 961,231 31,301 (175,760) 816,771 GNMA 52,979 85 (3,436) 49,628 Private-label 364,728 11,697 (72,920) 303,505 Commercial mortgage-related securities: FNMA/FHLMC 778,796 15,324 (178,281) 615,839 GNMA 69,369 577 (7,254) 62,691 Total HTM investment securities $ 3,960,451 $ 60,978 $ (620,411) $ 3,401,018
Amortized cost and fair values of investment securities by contractual maturity	The expected maturities of AFS and HTM securities at March 31, 2023, are shown below: AFS HTM ($ in thousands) Amortized Fair Amortized Fair Due in one year or less $ 6,773 $ 6,768 $ 14,358 $ 14,350 Due after one year through five years 179,763 165,292 36,046 35,926 Due after five years through ten years 150,181 149,003 161,217 159,591 Due after ten years 36,434 36,229 1,509,554 1,369,602 Total debt securities 373,151 357,292 1,721,175 1,579,468 Residential mortgage-related securities: FNMA/FHLMC 1,768,846 1,574,578 981,065 847,835 GNMA 1,092,742 1,095,588 53,298 50,596 Private-label — — 361,170 301,265 Commercial mortgage-related securities: FNMA/FHLMC 18,952 17,618 785,516 643,803 GNMA 194,550 189,466 64,859 58,536 Asset backed securities: FFELP 147,876 143,084 — — SBA 4,020 3,983 — — Total investment securities $ 3,600,137 $ 3,381,607 $ 3,967,083 $ 3,481,502 Ratio of fair value to amortized cost 93.9 % 87.8 %
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, 2023: ($ in thousands) AAA AA A Not Rated Total U. S. Treasury securities $ 999 $ — $ — $ — $ 999 Obligations of state and political subdivisions (municipal securities) 807,729 903,689 7,602 1,157 1,720,177 Residential mortgage-related securities: FNMA/FHLMC 981,065 — — — 981,065 GNMA 53,298 — — — 53,298 Private-label 361,170 — — — 361,170 Commercial mortgage-related securities: FNMA/FHLMC 785,516 — — — 785,516 GNMA 64,859 — — — 64,859 Total HTM securities $ 3,054,635 $ 903,689 $ 7,602 $ 1,157 $ 3,967,083 The following table summarizes the credit quality indicators of HTM securities at amortized cost at December 31, 2022: ($ in thousands) AAA AA A Not Rated Total U. S. Treasury securities $ 999 $ — $ — $ — $ 999 Obligations of state and political subdivisions (municipal securities) 806,529 917,059 7,604 1,158 1,732,351 Residential mortgage-related securities: FNMA/FHLMC 961,231 — — — 961,231 GNMA 52,979 — — — 52,979 Private-label 364,728 — — — 364,728 Commercial mortgage-related securities: FNMA/FHLMC 778,796 — — — 778,796 GNMA 69,369 — — — 69,369 Total HTM securities $ 3,034,630 $ 917,059 $ 7,604 $ 1,158 $ 3,960,451
Realized gains and losses and proceeds from sale	The following table summarizes gross realized gains and losses on AFS securities, net write-up of equity securities, and proceeds from the sale of investment securities for the three months ended March 31, 2023 and 2022: Three Months Ended Mar 31, ($ in thousands) 2023 2022 Gross gains on AFS securities $ — $ 21 Net write-up of equity securities 51 — Investment securities gains (losses), net $ 51 $ 21 Proceeds from sales of AFS investment securities $ — $ 734
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, 2023: Less than 12 months 12 months or more Total ($ in thousands) Number Unrealized Fair Number Unrealized Fair Unrealized Fair AFS investment securities U.S. Treasury securities — $ — $ — 7 $ (12,735) $ 111,743 $ (12,735) $ 111,743 Agency securities — — — 1 (1,271) 13,730 (1,271) 13,730 Obligations of state and political subdivisions (municipal securities) 189 (1,025) 111,529 72 (1,037) 40,199 (2,063) 151,727 Residential mortgage-related securities: FNMA/FHLMC 12 (3,619) 51,021 96 (190,909) 1,504,384 (194,529) 1,555,405 GNMA 23 (2,583) 294,212 9 (1,844) 33,128 (4,427) 327,340 Commercial mortgage-related securities: FNMA/FHLMC — — — 1 (1,335) 17,618 (1,335) 17,618 GNMA 13 (1,039) 100,585 29 (4,062) 74,665 (5,101) 175,250 Asset backed securities: FFELP — — — 15 (4,791) 143,084 (4,791) 143,084 SBA 2 (1) 331 6 (49) 1,755 (50) 2,087 Other debt securities 1 (31) 969 2 (51) 1,949 (82) 2,918 Total 240 $ (8,299) $ 558,647 238 $ (218,084) $ 1,942,255 $ (226,383) $ 2,500,901 HTM investment securities U.S. Treasury securities — $ — $ — 1 $ (51) $ 947 $ (51) $ 947 Obligations of state and political subdivisions (municipal securities) 311 (7,598) 454,461 400 (138,946) 614,842 (146,544) 1,069,304 Residential mortgage-related securities: FNMA/FHLMC 63 (2,881) 75,386 50 (160,633) 762,280 (163,514) 837,666 GNMA 16 (168) 6,511 63 (2,729) 32,771 (2,897) 39,282 Private-label — — — 18 (71,147) 301,265 (71,147) 301,265 Commercial mortgage-related securities: FNMA/FHLMC 4 (473) 29,658 41 (155,897) 614,153 (156,369) 643,811 GNMA — — — 14 (6,826) 58,536 (6,826) 58,536 Total 394 $ (11,120) $ 566,017 587 $ (536,229) $ 2,384,794 $ (547,349) $ 2,950,811 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, 2022: Less than 12 months 12 months or more Total ($ in thousands) Number Unrealized Fair Number Unrealized Fair Unrealized Fair AFS investment securities U.S. Treasury securities — $ — $ — 7 $ (15,063) $ 109,378 $ (15,063) $ 109,378 Agency securities — — — 1 (1,468) 13,532 (1,468) 13,532 Obligations of state and political subdivisions (municipal securities) 358 (5,066) 201,260 4 (8) 1,916 (5,074) 203,176 Residential mortgage-related securities: FNMA/FHLMC 24 (31,266) 260,986 84 (185,170) 1,321,420 (216,436) 1,582,406 GNMA 23 (4,415) 220,276 2 (840) 11,096 (5,255) 231,372 Commercial mortgage-related securities: FNMA/FHLMC 1 (1,896) 17,142 — — — (1,896) 17,142 GNMA 33 (3,920) 101,036 4 (649) 9,426 (4,569) 110,462 Asset backed securities: FFELP 3 (1,668) 44,304 12 (4,278) 106,887 (5,947) 151,191 SBA 2 (1) 417 6 (50) 2,057 (51) 2,474 Other debt securities 2 (30) 1,970 1 (49) 951 (78) 2,922 Total 446 $ (48,263) $ 847,391 121 $ (207,575) $ 1,576,665 $ (255,837) $ 2,424,055 HTM investment securities U.S. Treasury securities 1 $ (62) $ 936 — $ — $ — $ (62) $ 936 Obligations of state and political subdivisions (municipal securities) 771 (96,282) 1,079,216 156 (86,415) 231,022 (182,697) 1,310,238 Residential mortgage-related securities: FNMA/FHLMC 79 (18,925) 143,201 22 (156,836) 671,570 (175,760) 814,770 GNMA 81 (3,436) 44,476 — — — (3,436) 44,476 Private-label 3 (9,509) 58,733 15 (63,411) 244,772 (72,920) 303,505 Commercial mortgage-related securities: FNMA/FHLMC 4 (3,814) 20,338 39 (174,467) 576,911 (178,281) 597,249 GNMA 8 (2,528) 34,612 6 (4,726) 28,080 (7,254) 62,691 Total 947 $ (134,556) $ 1,381,511 238 $ (485,855) $ 1,752,354 $ (620,411) $ 3,133,865

Loans Loans (Tables)

Loans Loans (Tables)	3 Months Ended		12 Months Ended
	Mar. 31, 2023	Mar. 31, 2022	Dec. 31, 2022
Receivables [Abstract]
Loan composition	The period end loan composition was as follows: ($ in thousands) Mar 31, 2023 Dec 31, 2022 Asset-based lending & equipment finance $ 522,834 $ 458,887 Commercial and industrial 9,346,947 9,300,567 Commercial real estate — owner occupied 1,050,236 991,722 Commercial and business lending 10,920,017 10,751,176 Commercial real estate — investor 5,094,249 5,080,344 Real estate construction 2,147,070 2,155,222 Commercial real estate lending 7,241,318 7,235,565 Total commercial 18,161,335 17,986,742 Residential mortgage 8,605,164 8,511,550 Auto finance 1,551,538 1,382,073 Home equity 609,787 624,353 Other consumer 279,248 294,851 Total consumer 11,045,737 10,812,828 Total loans $ 29,207,072 $ 28,799,569
Loans, Credit Quality Indicator by Vintage Year	The following table presents loans by credit quality indicator by origination year at March 31, 2023: Term Loans Amortized Cost Basis by Origination Year (a) ($ in thousands) Rev Loans Converted to Term (a) Rev Loans Amortized Cost Basis YTD 2023 2022 2021 2020 2019 Prior Total Asset-based lending & equipment finance: Risk rating: Pass $ — $ 60,256 $ 55,535 $ 262,074 $ 125,609 $ 1,420 $ 543 $ — $ 505,437 Potential Problem — — — 1,396 — 16,000 — — 17,396 Asset-based lending & equipment finance $ — $ 60,256 $ 55,535 $ 263,471 $ 125,609 $ 17,420 $ 543 $ — $ 522,834 Commercial and industrial: Risk rating: Pass $ 71 $ 2,003,455 $ 332,572 $ 2,872,816 $ 2,101,488 $ 467,455 $ 558,852 $ 685,216 $ 9,021,853 Special Mention — 86,593 — 30,540 31,161 2,913 — 33,501 184,709 Potential Problem 128 39,951 6,145 34,388 27,494 4,675 132 4,865 117,650 Nonaccrual 9,500 — — 4,707 9,500 8,528 — — 22,735 Commercial and industrial $ 9,698 $ 2,130,000 $ 338,716 $ 2,942,451 $ 2,169,643 $ 483,571 $ 558,983 $ 723,583 $ 9,346,947 Commercial real estate - owner occupied: Risk rating: Pass $ — $ 22,344 $ 87,095 $ 205,922 $ 234,300 $ 150,009 $ 152,649 $ 151,106 $ 1,003,424 Special Mention — — — — — 3,483 9,500 274 13,257 Potential Problem — — 2,812 877 11,651 4,064 518 12,156 32,077 Nonaccrual 8 — 8 1,470 — — — — 1,478 Commercial real estate - owner occupied $ 8 $ 22,344 $ 89,914 $ 208,269 $ 245,950 $ 157,555 $ 162,667 $ 163,536 $ 1,050,236 Commercial and business lending: Risk rating: Pass $ 71 $ 2,086,055 $ 475,201 $ 3,340,812 $ 2,461,397 $ 618,883 $ 712,044 $ 836,323 $ 10,530,715 Special Mention — 86,593 — 30,540 31,161 6,396 9,500 33,775 197,965 Potential Problem 128 39,951 8,956 36,661 39,145 24,739 649 17,021 167,124 Nonaccrual 9,508 — 8 6,177 9,500 8,528 — — 24,213 Commercial and business lending $ 9,707 $ 2,212,600 $ 484,166 $ 3,414,190 $ 2,541,203 $ 658,546 $ 722,194 $ 887,119 $ 10,920,017 Commercial real estate - investor: Risk rating: Pass $ — $ 118,873 $ 324,298 $ 1,506,258 $ 1,375,935 $ 612,765 $ 489,024 $ 411,246 $ 4,838,398 Special Mention — — 18,454 92,149 22,247 8,225 — — 141,075 Potential Problem — — 24,803 22,047 22,209 — 1,019 19,575 89,653 Nonaccrual — — — — 24,855 — — 267 25,122 Commercial real estate - investor $ — $ 118,873 $ 367,555 $ 1,620,454 $ 1,445,246 $ 620,991 $ 490,042 $ 431,088 $ 5,094,249 Real estate construction: Risk rating: Pass $ — $ 29,616 $ 34,604 $ 1,025,918 $ 812,505 $ 197,722 $ 7,510 $ 11,059 $ 2,118,934 Special Mention — — — — — 12,308 15,651 — 27,958 Nonaccrual — — — — — — — 178 178 Real estate construction $ — $ 29,616 $ 34,604 $ 1,025,918 $ 812,505 $ 210,030 $ 23,160 $ 11,237 $ 2,147,070 Commercial real estate lending: Risk rating: Pass $ — $ 148,489 $ 358,901 $ 2,532,176 $ 2,188,440 $ 810,487 $ 496,533 $ 422,305 $ 6,957,332 Special Mention — — 18,454 92,149 22,247 20,533 15,651 — 169,033 Potential Problem — — 24,803 22,047 22,209 — 1,019 19,575 89,653 Nonaccrual — — — — 24,855 — — 445 25,300 Commercial real estate lending $ — $ 148,489 $ 402,159 $ 2,646,372 $ 2,257,752 $ 831,020 $ 513,203 $ 442,325 $ 7,241,318 Total commercial: Risk rating: Pass $ 71 $ 2,234,544 $ 834,103 $ 5,872,988 $ 4,649,837 $ 1,429,370 $ 1,208,578 $ 1,258,628 $ 17,488,047 Special Mention — 86,593 18,454 122,689 53,408 26,929 25,151 33,775 366,999 Potential Problem 128 39,951 33,760 58,708 61,354 24,739 1,668 36,596 256,776 Nonaccrual 9,508 — 8 6,177 34,355 8,528 — 445 49,513 Total commercial $ 9,707 $ 2,361,089 $ 886,324 $ 6,060,562 $ 4,798,955 $ 1,489,566 $ 1,235,396 $ 1,329,444 $ 18,161,335 Term Loans Amortized Cost Basis by Origination Year (a) ($ in thousands) Rev Loans Converted to Term (a) Rev Loans Amortized Cost Basis YTD 2023 2022 2021 2020 2019 Prior Total Residential mortgage: Risk rating: Pass $ — $ — $ 85,201 $ 1,490,848 $ 2,221,515 $ 1,687,853 $ 798,205 $ 2,261,293 $ 8,544,915 Special Mention — — 91 — — 95 — 105 291 Potential Problem — — 45 216 548 — 551 323 1,684 Nonaccrual — — 279 7,384 4,101 8,394 4,356 33,760 58,274 Residential mortgage $ — $ — $ 85,616 $ 1,498,448 $ 2,226,164 $ 1,696,342 $ 803,113 $ 2,295,481 $ 8,605,164 Auto finance: Risk rating: Pass $ — $ — $ 239,138 $ 1,208,658 $ 98,290 $ 299 $ 1,020 $ 388 $ 1,547,793 Special Mention — — — 1,168 141 — — — 1,310 Nonaccrual — — — 1,952 474 — 9 — 2,436 Auto finance $ — $ — $ 239,138 $ 1,211,778 $ 98,906 $ 299 $ 1,029 $ 388 $ 1,551,538 Home equity: Risk rating: Pass $ 2,173 $ 495,755 $ 230 $ 31,083 $ 6,835 $ 2,243 $ 5,732 $ 59,670 $ 601,549 Special Mention 18 124 — — — — 29 594 747 Potential Problem 14 — 14 196 — — 34 — 244 Nonaccrual 388 20 — 303 106 131 252 6,434 7,246 Home equity $ 2,592 $ 495,900 $ 244 $ 31,583 $ 6,941 $ 2,374 $ 6,047 $ 66,698 $ 609,787 Other consumer: Risk rating: Pass $ 90 $ 190,219 $ 1,860 $ 5,279 $ 4,017 $ 1,922 $ 849 $ 74,324 $ 278,471 Special Mention 1 617 — 13 11 3 10 23 676 Nonaccrual — 44 — — 7 6 6 36 100 Other consumer $ 91 $ 190,881 $ 1,860 $ 5,292 $ 4,035 $ 1,930 $ 866 $ 74,384 $ 279,248 Total consumer: Risk rating: Pass $ 2,263 $ 685,974 $ 326,429 $ 2,735,869 $ 2,330,657 $ 1,692,318 $ 805,806 $ 2,395,676 $ 10,972,729 Special Mention 19 742 91 1,181 152 98 39 722 3,024 Potential Problem 14 — 59 413 548 — 585 323 1,928 Nonaccrual 388 65 279 9,639 4,688 8,530 4,624 40,231 68,056 Total consumer $ 2,683 $ 686,781 $ 326,858 $ 2,747,101 $ 2,336,046 $ 1,700,946 $ 811,054 $ 2,436,951 $ 11,045,737 Total loans: Risk rating: Pass $ 2,334 $ 2,920,518 $ 1,160,532 $ 8,608,857 $ 6,980,494 $ 3,121,688 $ 2,014,384 $ 3,654,303 $ 28,460,776 Special Mention 19 87,335 18,545 123,869 53,560 27,027 25,189 34,497 370,023 Potential Problem 141 39,951 33,818 59,120 61,903 24,739 2,253 36,919 258,704 Nonaccrual 9,896 65 287 15,816 39,044 17,058 4,624 40,675 117,569 Total loans $ 12,390 $ 3,047,870 $ 1,213,182 $ 8,807,663 $ 7,135,000 $ 3,190,512 $ 2,046,450 $ 3,766,395 $ 29,207,072 (a) Revolving loans converted to term loans are those converted during the reporting period and are also reported in their year of origination. The following table presents loans by credit quality indicator by origination year at December 31, 2022: Term Loans Amortized Cost Basis by Origination Year (a) ($ in thousands) Rev Loans Converted to Term (a) Rev Loans Amortized Cost Basis 2022 2021 2020 2019 2018 Prior Total Asset-based lending & equipment finance: Risk rating: Pass $ — $ 47,446 $ 269,258 $ 121,914 $ 1,832 $ 653 $ 85 $ — $ 441,189 Potential Problem — — 1,448 — 16,250 — — — 17,698 Asset-based lending & equipment finance: $ — $ 47,446 $ 270,706 $ 121,914 $ 18,082 $ 653 $ 85 $ — $ 458,887 Commercial and industrial: Risk rating: Pass $ 1,423 $ 1,891,331 $ 2,976,288 $ 2,245,094 $ 566,001 $ 572,467 $ 330,557 $ 432,906 $ 9,014,644 Special Mention — 93,209 3,411 23,607 — — 19 32,497 152,744 Potential Problem 447 24,549 39,952 4,193 5,637 38,169 218 6,133 118,851 Nonaccrual 3,926 — 5,210 — 9,119 — — — 14,329 Commercial and industrial $ 5,796 $ 2,009,089 $ 3,024,861 $ 2,272,895 $ 580,757 $ 610,636 $ 330,794 $ 471,535 $ 9,300,567 Commercial real estate - owner occupied: Risk rating: Pass $ — $ 12,447 $ 211,645 $ 225,627 $ 163,965 $ 160,370 $ 73,487 $ 97,420 $ 944,961 Special Mention — — — — 1,136 1,491 9,713 — 12,339 Potential Problem — 1,325 1,238 11,141 5,523 10,769 370 4,055 34,422 Commercial real estate - owner occupied $ — $ 13,772 $ 212,883 $ 236,769 $ 170,624 $ 172,630 $ 83,570 $ 101,475 $ 991,722 Commercial and business lending: Risk rating: Pass $ 1,423 $ 1,951,224 $ 3,457,191 $ 2,592,636 $ 731,798 $ 733,490 $ 404,129 $ 530,326 $ 10,400,794 Special Mention — 93,209 3,411 23,607 1,136 1,491 9,732 32,497 165,083 Potential Problem 447 25,874 42,638 15,335 27,410 48,938 589 10,188 170,971 Nonaccrual 3,926 — 5,210 — 9,119 — — — 14,329 Commercial and business lending $ 5,796 $ 2,070,307 $ 3,508,450 $ 2,631,578 $ 769,463 $ 783,919 $ 414,449 $ 573,010 $ 10,751,176 Commercial real estate - investor: Risk rating: Pass $ 38,412 $ 106,280 $ 1,633,094 $ 1,419,000 $ 683,121 $ 530,444 $ 262,858 $ 210,299 $ 4,845,096 Special Mention — — 61,968 24,149 7,361 9,400 — 10,455 113,333 Potential Problem — — 16,147 21,303 27,635 1,333 19,017 7,099 92,535 Nonaccrual — — 2,177 25,668 — — — 1,535 29,380 Commercial real estate - investor $ 38,412 $ 106,280 $ 1,713,387 $ 1,490,120 $ 718,117 $ 541,177 $ 281,875 $ 229,387 $ 5,080,344 Real estate construction: Risk rating: Pass $ — $ 29,892 $ 900,593 $ 913,107 $ 241,230 $ 12,062 $ 2,226 $ 9,775 $ 2,108,885 Special Mention — — — — 12,174 33,087 — — 45,261 Potential Problem — — — — 970 — — — 970 Nonaccrual — — — — — — — 105 105 Real estate construction $ — $ 29,892 $ 900,593 $ 913,107 $ 254,374 $ 45,149 $ 2,226 $ 9,880 $ 2,155,222 Commercial real estate lending: Risk rating: Pass $ 38,412 $ 136,173 $ 2,533,687 $ 2,332,107 $ 924,351 $ 542,505 $ 265,083 $ 220,073 $ 6,953,981 Special Mention — — 61,968 24,149 19,535 42,487 — 10,455 158,595 Potential Problem — — 16,147 21,303 28,605 1,333 19,017 7,099 93,505 Nonaccrual — — 2,177 25,668 — — — 1,640 29,485 Commercial real estate lending $ 38,412 $ 136,173 $ 2,613,980 $ 2,403,227 $ 972,492 $ 586,326 $ 284,101 $ 239,267 $ 7,235,565 Term Loans Amortized Cost Basis by Origination Year (a) ($ in thousands) Rev Loans Converted to Term (a) Rev Loans Amortized Cost Basis 2022 2021 2020 2019 2018 Prior Total Total commercial: Risk rating: Pass $ 39,835 $ 2,087,396 $ 5,990,879 $ 4,924,743 $ 1,656,149 $ 1,275,996 $ 669,213 $ 750,399 $ 17,354,774 Special Mention — 93,209 65,379 47,756 20,671 43,978 9,732 42,952 323,677 Potential Problem 447 25,874 58,785 36,638 56,016 50,271 19,606 17,287 264,476 Nonaccrual 3,926 — 7,387 25,668 9,119 — — 1,640 43,814 Total commercial $ 44,208 $ 2,206,480 $ 6,122,430 $ 5,034,805 $ 1,741,955 $ 1,370,245 $ 698,550 $ 812,278 $ 17,986,742 Residential mortgage: Risk rating: Pass $ — $ — $ 1,410,566 $ 2,184,125 $ 1,716,663 $ 817,164 $ 370,724 $ 1,951,406 $ 8,450,648 Special Mention — — — 284 96 — — 63 444 Potential Problem — — 455 71 — 738 29 685 1,978 Nonaccrual — — 8,506 3,851 6,219 3,744 5,014 31,145 58,480 Residential mortgage $ — $ — $ 1,419,527 $ 2,188,332 $ 1,722,979 $ 821,645 $ 375,768 $ 1,983,299 $ 8,511,550 Auto finance: Risk rating: Pass $ — $ — $ 1,271,205 $ 106,102 $ 333 $ 1,267 $ 446 $ 61 $ 1,379,414 Special Mention — — 1,052 118 — — — — 1,170 Nonaccrual — — 1,149 331 — 9 — — 1,490 Auto finance $ — $ — $ 1,273,406 $ 106,551 $ 333 $ 1,276 $ 446 $ 61 $ 1,382,073 Home equity: Risk rating: Pass $ 7,254 $ 508,212 $ 31,389 $ 6,508 $ 2,112 $ 6,197 $ 6,966 $ 54,827 $ 616,211 Special Mention 47 102 — — — — 47 310 458 Potential Problem — 15 — — — 34 2 146 197 Nonaccrual 1,590 — 306 102 131 307 319 6,322 7,487 Home equity $ 8,891 $ 508,329 $ 31,695 $ 6,610 $ 2,243 $ 6,538 $ 7,333 $ 61,605 $ 624,353 Other consumer: Risk rating: Pass $ 64 $ 199,942 $ 7,429 $ 5,256 $ 2,468 $ 1,238 $ 174 $ 77,611 $ 294,117 Special Mention 6 490 11 — 5 5 — 25 537 Nonaccrual 78 56 11 21 10 56 10 34 197 Other consumer $ 147 $ 200,488 $ 7,452 $ 5,276 $ 2,482 $ 1,300 $ 184 $ 77,670 $ 294,851 Total consumer: Risk rating: Pass $ 7,318 $ 708,154 $ 2,720,589 $ 2,301,991 $ 1,721,576 $ 825,866 $ 378,310 $ 2,083,904 $ 10,740,390 Special Mention 52 592 1,063 403 101 5 47 398 2,609 Potential Problem — 15 455 71 — 772 31 831 2,175 Nonaccrual 1,668 56 9,973 4,304 6,360 4,116 5,343 37,501 67,654 Total consumer $ 9,038 $ 708,817 $ 2,732,080 $ 2,306,769 $ 1,728,037 $ 830,759 $ 383,731 $ 2,122,635 $ 10,812,828 Total loans: Risk rating: Pass $ 47,152 $ 2,795,551 $ 8,711,468 $ 7,226,734 $ 3,377,725 $ 2,101,861 $ 1,047,522 $ 2,834,303 $ 28,095,164 Special Mention 52 93,801 66,443 48,159 20,772 43,983 9,778 43,350 326,286 Potential Problem 447 25,889 59,240 36,709 56,016 51,043 19,637 18,118 266,651 Nonaccrual 5,595 56 17,360 29,972 15,479 4,116 5,343 39,141 111,467 Total loans $ 53,246 $ 2,915,297 $ 8,854,510 $ 7,341,574 $ 3,469,992 $ 2,201,004 $ 1,082,280 $ 2,934,912 $ 28,799,569 (a) Revolving loans converted to term loans are those converted during the reporting period and are also reported in their year of origination. The following table presents gross charge offs by origination year at March 31, 2023: Gross Charge Offs by Origination Year ($ in thousands) Rev Loans Amortized Cost Basis YTD 2023 2022 2021 2020 2019 Prior Total Commercial and industrial $ 823 $ — $ — $ — $ — $ — $ 2,152 $ 2,975 Commercial and business lending 823 — — — — — 2,152 2,975 Total commercial 823 — — — — — 2,152 2,975 Residential mortgage — — 107 19 8 2 32 168 Auto finance — — 922 181 — — — 1,103 Home equity — — 43 14 — 22 33 111 Other consumer 916 — 117 49 9 5 48 1,144 Total consumer 916 — 1,189 263 17 29 112 2,525 Total gross charge offs $ 1,739 $ — $ 1,189 $ 263 $ 17 $ 29 $ 2,264 $ 5,501
Loans, Past Due Status	The following table presents loans by past due status at March 31, 2023: Accruing ($ in thousands) Current 30-59 Days 60-89 Days 90+ Days Nonaccrual (a)(b) Total Asset-based lending & equipment finance $ 522,834 $ — $ — $ — $ — $ 522,834 Commercial and industrial 9,319,650 4,110 130 323 22,735 9,346,947 Commercial real estate - owner occupied 1,045,803 2,955 — — 1,478 1,050,236 Commercial and business lending 10,888,287 7,065 130 323 24,213 10,920,017 Commercial real estate - investor 5,069,126 — — — 25,122 5,094,249 Real estate construction 2,146,892 — — — 178 2,147,070 Commercial real estate lending 7,216,018 — — — 25,300 7,241,318 Total commercial 18,104,305 7,065 130 323 49,513 18,161,335 Residential mortgage 8,539,264 7,430 196 — 58,274 8,605,164 Auto finance 1,540,463 7,330 1,310 — 2,436 1,551,538 Home equity 598,427 3,366 747 — 7,246 609,787 Other consumer 276,045 976 747 1,380 100 279,248 Total consumer 10,954,199 19,102 3,000 1,380 68,056 11,045,737 Total loans $ 29,058,504 $ 26,167 $ 3,130 $ 1,703 $ 117,569 $ 29,207,072 (a) Of the total nonaccrual loans, $78 million, or 66%, were current with respect to payment at March 31, 2023. (b) No interest income was recognized on nonaccrual loans for the three months ended March 31, 2023. In addition, there were $15 million of nonaccrual loans for which there was no related ACLL at March 31, 2023. The following table presents loans by past due status at December 31, 2022: Accruing ($ in thousands) Current 30-59 Days 60-89 Days 90+ Days Nonaccrual (a)(b) Total Asset-based lending & equipment finance $ 458,887 $ — $ — $ — $ — $ 458,887 Commercial and industrial 9,279,674 716 5,566 282 14,329 9,300,567 Commercial real estate - owner occupied 991,493 218 12 — — 991,722 Commercial and business lending 10,730,053 934 5,578 282 14,329 10,751,176 Commercial real estate - investor 5,049,897 1,067 — — 29,380 5,080,344 Real estate construction 2,155,077 39 — — 105 2,155,222 Commercial real estate lending 7,204,975 1,105 — — 29,485 7,235,565 Total commercial 17,935,028 2,040 5,578 282 43,814 17,986,742 Residential mortgage 8,443,072 9,811 63 124 58,480 8,511,550 Auto finance 1,371,176 8,238 1,170 — 1,490 1,382,073 Home equity 611,259 5,149 458 — 7,487 624,353 Other consumer 291,722 1,018 592 1,322 197 294,851 Total consumer 10,717,229 24,216 2,283 1,446 67,654 10,812,828 Total loans $ 28,652,257 $ 26,256 $ 7,861 $ 1,728 $ 111,467 $ 28,799,569 (a) Of the total nonaccrual loans, $64 million, or 58%, were current with respect to payment at December 31, 2022. (b) No interest income was recognized on nonaccrual loans for the year ended December 31, 2022. In addition, there were $11 million of nonaccrual loans for which there was no related ACLL at December 31, 2022.
Loans, Modifications	The following tables show the composition of loan modifications made to borrowers experiencing financial difficulty by the loan portfolio and type of concessions granted during the three months ended March 31, 2023. Each of the types of concessions granted comprised less than 1% of their respective classes of loan portfolios at March 31, 2023. Interest Rate Concession ($ in thousands) Amortized Cost Commercial and industrial $ 47 Auto 61 Home equity 31 Other consumer 498 Total loans modified $ 637 Term Extension ($ in thousands) Amortized Cost Residential mortgage $ 209 Total loans modified $ 209 Combination - Interest Rate Concession and Term Extension ($ in thousands) Amortized Cost Residential mortgage $ 165 Home equity 93 Total loans modified $ 258 The following tables summarize, by loan portfolio, the financial effect of the Corporation's loan modifications on the modified loans as of March 31, 2023: Interest Rate Concession Loan Type Financial Effect, Weighted Average Contractual Interest Rate (Decrease) Increase (a) Commercial and industrial (16) % Auto (2) % Home equity 1 % Other consumer (20) % Total loans modified (b) (17) % (a) Due to market conditions, some interest rate concessions on floating rate loans may involve an increase in rate that was lower in comparison to the rate of increase for floating rate loans not modified. (b) During the three months ended March 31, 2023, interest rate concessions changed the weighted average interest rate on modified loans from 22% to 5%, which primarily consisted of credit cards. Term Extension Loan Type Financial Effect, Weighted Average Term Increase (a) Residential mortgage 26 months Total loans modified 26 months (a) During the three months ended March 31, 2023, term extensions changed the weighted average term on modified loans from 334 months to 360 months.
Loans, Modifications in Last 12 Months, Performance	The following table depicts the performance of loans that have been modified in the last three months at March 31, 2023: Payment Status (Amortized Cost Basis) ($ in thousands) Current 30-89 Days Past Due 90+ Days Past Due Nonaccrual Commercial and industrial $ 47 $ — $ — $ — Residential mortgage 126 — — 248 Auto 61 — — — Home equity 31 — — 93 Other consumer 498 — — — Total loans modified $ 763 $ — $ — $ 341
Loans, Modified, Subsequent Default	The following table provides the amortized cost of loan modifications by loan portfolio and type of concession that were modified in the previous three months and subsequently had a payment default, as of March 31, 2023: Amortized Cost of Loan Modifications that Subsequently Defaulted ($ in thousands) Interest Rate Concession Term Extension Combination Interest Rate Reduction and Term Extension Home equity $ — $ — $ 60
Loans, Troubled Debt Restructurings, Performance and Nonaccrual			The following table presents nonaccrual and performing restructured loans by loan portfolio at December 31, 2022: ($ in thousands) Performing Restructured Loans Nonaccrual Restructured Loans (a) Commercial and industrial $ 12,453 $ — Commercial real estate — owner occupied 316 — Commercial real estate — investor 128 2,074 Real estate construction 195 9 Residential mortgage 16,829 17,117 Home equity 2,148 927 Other consumer 798 — Total restructured loans $ 32,868 $ 20,127 (a) Nonaccrual restructured loans have been included within nonaccrual loans.
Loans, Troubled Debt Restructuring, Summary		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: ($ in thousands) Number of Loans Recorded Investment (a) Unpaid Principal Balance (b) Residential mortgage 24 $ 6,421 $ 6,502 Home equity 3 80 101 Total loans modified 27 $ 6,500 $ 6,603 (a) Represents post-modification outstanding recorded investment.
Loans, Troubled Debt Restructurings, Subsequent Default		The following table provides the number of loans modified during the previous twelve months which subsequently defaulted during the three months ended March 31, 2022, and the recorded investment in these restructured loans at the time of default as of March 31, 2022: Three Months Ended March 31, 2022 ($ in thousands) Number of Recorded Residential mortgage 1 $ 884
Loans, Changes in AFLL 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, 2023: ($ in thousands) Dec 31, 2022 Charge offs Recoveries Net Charge offs Provision for credit losses Mar 31, 2023 ACLL / Loans Allowance for loan losses Asset-based lending & equipment finance $ 6,564 $ — $ — $ — $ 2 $ 6,566 Commercial and industrial 112,512 (2,975) 1,216 (1,759) 6,930 117,683 Commercial real estate — owner occupied 9,475 — 3 3 785 10,263 Commercial and business lending 128,551 (2,975) 1,219 (1,756) 7,717 134,512 Commercial real estate — investor 54,398 — — — 412 54,809 Real estate construction 45,589 — 18 18 3,946 49,552 Commercial real estate lending 99,986 — 18 18 4,357 104,362 Total commercial 228,538 (2,975) 1,237 (1,738) 12,075 238,874 Residential mortgage 38,298 (168) 114 (53) 851 39,096 Auto finance 19,619 (1,103) 147 (957) 3,531 22,193 Home equity 14,875 (111) 451 340 (442) 14,774 Other consumer 11,390 (1,144) 263 (881) 986 11,495 Total consumer 84,182 (2,525) 975 (1,550) 4,925 87,557 Total loans $ 312,720 $ (5,501) $ 2,212 $ (3,289) $ 17,000 $ 326,432 Allowance for unfunded commitments Asset-based lending & equipment finance $ 601 $ — $ — $ — $ (103) $ 498 Commercial and industrial 12,396 — — — (123) 12,273 Commercial real estate — owner occupied 103 — — — 146 249 Commercial and business lending 13,101 — — — (80) 13,020 Commercial real estate — investor 710 — — — 159 868 Real estate construction 20,583 — — — 963 21,546 Commercial real estate lending 21,292 — — — 1,122 22,414 Total commercial 34,393 — — — 1,041 35,435 Home equity 2,699 — — — (8) 2,691 Other consumer 1,683 — — — (34) 1,650 Total consumer 4,382 — — — (41) 4,341 Total loans $ 38,776 $ — $ — $ — $ 1,000 $ 39,776 Allowance for credit losses on loans Asset-based lending & equipment finance $ 7,165 $ — $ — $ — $ (102) $ 7,063 1.35 % Commercial and industrial 124,908 (2,975) 1,216 (1,759) 6,808 129,957 1.39 % Commercial real estate — owner occupied 9,579 — 3 3 931 10,513 1.00 % Commercial and business lending 141,652 (2,975) 1,219 (1,756) 7,637 147,533 1.35 % Commercial real estate — investor 55,108 — — — 570 55,678 1.09 % Real estate construction 66,171 — 18 18 4,909 71,098 3.31 % Commercial real estate lending 121,279 — 18 18 5,479 126,776 1.75 % Total commercial 262,931 (2,975) 1,237 (1,738) 13,116 274,309 1.51 % Residential mortgage 38,298 (168) 114 (53) 851 39,096 0.45 % Auto finance 19,619 (1,103) 147 (957) 3,531 22,193 1.43 % Home equity 17,574 (111) 451 340 (449) 17,465 2.86 % Other consumer 13,073 (1,144) 263 (881) 952 13,145 4.71 % Total consumer 88,565 (2,525) 975 (1,550) 4,884 91,898 0.83 % Total loans $ 351,496 $ (5,501) $ 2,212 $ (3,289) $ 18,000 $ 366,208 1.25 % The following table presents a summary of the changes in the ACLL by portfolio segment for the year ended December 31, 2022: ($ in thousands) Dec 31, 2021 Charge offs Recoveries Net Charge offs Provision for credit losses Dec 31, 2022 ACLL / Loans Allowance for loan losses Asset-based lending & equipment finance $ 4,182 $ — $ — $ — $ 2,382 $ 6,564 Commercial and industrial 85,675 (4,491) 5,282 791 26,047 112,512 Commercial real estate — owner occupied 11,473 — 13 13 (2,011) 9,475 Commercial and business lending 101,330 (4,491) 5,295 804 26,418 128,551 Commercial real estate — investor 72,803 (50) 50 — (18,405) 54,398 Real estate construction 37,643 (48) 106 58 7,887 45,589 Commercial real estate lending 110,446 (98) 156 58 (10,518) 99,986 Total commercial 211,776 (4,588) 5,451 862 15,900 228,538 Residential mortgage 40,787 (567) 908 341 (2,830) 38,298 Auto finance 1,999 (1,041) 98 (943) 18,563 19,619 Home equity 14,011 (587) 1,385 798 66 14,875 Other consumer 11,441 (3,363) 1,010 (2,353) 2,301 11,390 Total consumer 68,239 (5,558) 3,401 (2,157) 18,100 84,182 Total loans $ 280,015 $ (10,146) $ 8,852 $ (1,294) $ 34,000 $ 312,720 Allowance for unfunded commitments Asset-based lending & equipment finance $ 857 $ — $ — $ — $ (256) $ 601 Commercial and industrial 17,601 — — — (5,205) 12,396 Commercial real estate — owner occupied 208 — — — (105) 103 Commercial and business lending 18,667 — — — (5,566) 13,101 Commercial real estate — investor 936 — — — (226) 710 Real estate construction 15,586 — — — 4,997 20,583 Commercial real estate lending 16,522 — — — 4,770 21,292 Total commercial 35,189 — — — (796) 34,393 Home equity 2,592 — — — 107 2,699 Other consumer 1,995 — — — (311) 1,683 Total consumer 4,587 — — — (204) 4,382 Total loans $ 39,776 $ — $ — $ — $ (1,000) $ 38,776 Allowance for credit losses on loans Asset-based lending & equipment finance $ 5,040 $ — $ — $ — $ 2,125 $ 7,165 1.56 % Commercial and industrial 103,276 (4,491) 5,282 791 20,842 124,908 1.34 % Commercial real estate — owner occupied 11,681 — 13 13 (2,115) 9,579 0.97 % Commercial and business lending 119,997 (4,491) 5,295 804 20,852 141,652 1.32 % Commercial real estate — investor 73,739 (50) 50 — (18,631) 55,108 1.08 % Real estate construction 53,229 (48) 106 58 12,884 66,171 3.07 % Commercial real estate lending 126,968 (98) 156 58 (5,748) 121,279 1.68 % Total commercial 246,965 (4,588) 5,451 862 15,104 262,931 1.46 % Residential mortgage 40,787 (567) 908 341 (2,830) 38,298 0.45 % Auto finance 1,999 (1,041) 98 (943) 18,563 19,619 1.42 % Home equity 16,603 (587) 1,385 798 173 17,574 2.81 % Other consumer 13,436 (3,363) 1,010 (2,353) 1,990 13,073 4.43 % Total consumer 72,825 (5,558) 3,401 (2,157) 17,896 88,565 0.82 % Total loans $ 319,791 $ (10,146) $ 8,852 $ (1,294) $ 33,000 $ 351,496 1.22 %

Goodwill and Other Intangible_2

Goodwill and Other Intangible Assets (Tables)	3 Months Ended
	Mar. 31, 2023
Goodwill and Intangible Assets Disclosure [Abstract]
Summary of core deposit intangibles and other intangibles	Changes in the gross carrying amount, accumulated amortization, and net book value for CDIs were as follows: ($ in thousands) Three Months Ended March 31, 2023 Year Ended Dec 31, 2022 Core deposit intangibles Gross carrying amount at the beginning of period $ 88,109 $ 88,109 Accumulated amortization (41,030) (38,827) Net book value $ 47,079 $ 49,282 Amortization during the period $ 2,203 $ 8,811
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 three months ended March 31, 2023 and the year ended December 31, 2022 is as follows: ($ in thousands) Three Months Ended March 31, 2023 Year Ended Dec 31, 2022 Mortgage servicing rights Mortgage servicing rights at beginning of period $ 77,351 $ 54,862 Cumulative effect of accounting methodology change N/A 2,296 Balance at beginning of period, adjusted $ 77,351 $ 57,158 Additions 474 7,279 Paydowns (1,489) (9,350) Valuation: Change in fair value model assumptions — 5,715 Changes in fair value of asset (1,857) 16,549 Mortgage servicing rights at end of period $ 74,479 $ 77,351 Portfolio of residential mortgage loans serviced for others (“servicing portfolio”) $ 6,611,770 $ 6,711,820 Mortgage servicing rights to servicing portfolio 1.13 % 1.15 %
Summary of estimated future amortization expense	The following table shows the estimated future amortization expense for CDIs and decay for MSRs: ($ in thousands) Core Deposit Intangibles Mortgage Servicing Rights Nine months ended December 31, 2023 $ 6,608 $ 9,713 2024 8,811 12,079 2025 8,811 10,382 2026 8,811 8,924 2027 8,811 7,518 2028 3,485 6,564 Beyond 2028 1,742 19,299 Total estimated amortization expense and MSRs decay $ 47,079 $ 74,479

Short and Long-Term Funding (Ta

Short and Long-Term Funding (Tables)	3 Months Ended
	Mar. 31, 2023
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, 2023 Dec 31, 2022 Short-term funding Federal funds purchased $ 350 $ 344,170 Securities sold under agreements to repurchase 208,048 240,969 Federal funds purchased and securities sold under agreements to repurchase 208,398 585,139 Commercial paper 18,210 20,798 Total short-term funding $ 226,608 $ 605,937 Long-term funding Corporation subordinated notes, at par $ 550,000 $ 250,000 Discount and capitalized costs (8,513) (544) Subordinated debt fair value hedge (a) 2,168 (1,855) Finance leases 448 469 Total long-term funding $ 544,103 $ 248,071 Total short and long-term funding, excluding FHLB advances $ 770,711 $ 854,007 FHLB advances Short-term FHLB advances $ 3,785,000 $ 3,125,000 Long-term FHLB advances 1,208,745 1,209,170 FHLB advances fair value hedge (a) (7,607) (14,308) Total FHLB advances $ 4,986,138 $ 4,319,861 Total short and long-term funding $ 5,756,849 $ 5,173,869 (a) For additional information on the fair value hedges, see Note 9.
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, 2023 and December 31, 2022 are presented in the following table: Overnight and Continuous ($ in thousands) Mar 31, 2023 Dec 31, 2022 Repurchase agreements Agency mortgage-related securities $ 208,048 $ 240,969

Derivative and Hedging Activi_2

Derivative and Hedging Activities (Tables)	3 Months Ended
	Mar. 31, 2023
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 Corporation’s derivatives, as well as the balance sheet netting adjustments as of March 31, 2023 and December 31, 2022. 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, 2023 and December 31, 2022. 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, 2023 Dec 31, 2022 Asset Liability Asset Liability ($ in thousands) Notional Amount Fair Value Notional Amount Fair Value Notional Amount Fair Value Notional Amount Fair Value Designated as hedging instruments: Interest rate-related instruments $ 2,000,000 $ 19,416 $ 850,000 $ — $ 900,000 $ 4,349 $ 1,150,000 $ 1,260 Not designated as hedging instruments: Interest rate-related and other instruments 4,412,666 71,619 4,737,474 199,339 4,246,823 62,401 4,599,391 251,398 Foreign currency exchange forwards 468,094 3,313 454,970 3,194 499,078 1,922 461,134 1,801 Mortgage banking (a) 59,184 338 83,500 441 21,265 86 33,000 46 Total not designated as hedging instruments 75,271 202,974 64,410 253,245 Gross derivatives before netting 94,687 202,974 68,759 254,506 Less: Legally enforceable master netting agreements 8,301 8,301 2,788 2,788 Less: Cash collateral pledged/received 36,331 342 26,898 217 Total derivative instruments, after netting $ 50,056 $ 194,331 $ 39,072 $ 251,500
Balance Sheet Recording of Fair Value Hedge [Table]	The following table presents amounts that were recorded on the consolidated balance sheets related to cumulative basis adjustments for fair value hedges: Line Item in the Consolidated Balance Sheets in Which the Hedged Item is Included Carrying Amount of the Hedged Assets/(Liabilities) Cumulative Amount of Fair Value Hedging Adjustment Included in the Carrying Amount of the Hedged Assets/(Liabilities) Carrying Amount of the Hedged Assets/(Liabilities) Cumulative Amount of Fair Value Hedging Adjustment Included in the Carrying Amount of the Hedged Assets/(Liabilities) ($ in thousands) March 31, 2023 December 31, 2022 Other long-term funding $ (552,168) $ (2,168) $ (248,145) $ 1,855 FHLB Advances (592,393) 7,607 (585,692) 14,308 Total $ (1,144,561) $ 5,439 $ (833,837) $ 16,163
Schedule of cash flow hedging instruments, statements of financial performance and financial position location	The table below identifies the effect of fair value and cash flow hedge accounting on the Corporation's consolidated statements of income for the three months ended March 31, 2023 and 2022: Location and Amount Recognized on the Consolidated Statements of Income in Three months ended Mar 31, 2023 2022 ($ in thousands) Interest Income Interest Expense Interest Income Total amounts of income presented on the consolidated statements of income in which the effects of the fair value or cash flow hedges are recorded (a) $ (1,321) $ 2,515 $ (179) The effects of fair value and cash flow hedging: Impact on fair value hedging relationships in Subtopic 815-20 Interest contracts: Hedged items (59) 10,724 (179) Derivatives designated as hedging instruments (a) (1,262) (8,209) —
Schedule of Cash Flow Hedges Included in Accumulated Other Comprehensive Income (Loss) [Table Text Block]	The following table presents the effect of cash flow hedge accounting on accumulated other comprehensive income (loss) for the three months ended March 31, 2023 and 2022: Three Months Ended Mar 31, ($ in thousands) 2023 2022 Interest rate-related instruments designated as cash flow hedging instruments Amount of gain recognized in OCI on cash flow hedge derivative (a) $ 13,763 $ — Amount of loss reclassified from accumulated other comprehensive income (loss) into interest income (a) 1,262 — (a) The entirety of gains recognized in OCI as well as the losses reclassified from accumulated other comprehensive income (loss) into interest income were included components in the assessment of hedge effectiveness.
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, 2023 and 2022: Consolidated Statements of Income Category of Gain / (Loss) Three Months Ended Mar 31, ($ in thousands) 2023 2022 Derivative instruments Interest rate-related and other instruments — customer and mirror, net Capital markets, net $ (70) $ 558 Interest rate-related instruments — MSRs hedge Mortgage banking, net 2,521 (3,666) Foreign currency exchange forwards Capital markets, net (2) 123 Interest rate lock commitments (mortgage) Mortgage banking, net 252 (2,842) Forward commitments (mortgage) Mortgage banking, net (395) 4,757

Balance Sheet Offsetting (Table

Balance Sheet Offsetting (Tables)	3 Months Ended
	Mar. 31, 2023
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, 2023 and December 31, 2022. The interest and foreign exchange agreements the Corporation has with its commercial customers are not subject to an enforceable master netting arrangement and are therefore excluded from this table: Gross Amounts Recognized Gross Amounts Subject to Master Netting Arrangements Offset on the Consolidated Balance Sheets Net Amounts Presented on the Consolidated Balance Sheets Gross Amounts Not Offset on the Consolidated Balance Sheets ($ in thousands) Derivative Cash Collateral Received Security Collateral Received Net Derivative assets March 31, 2023 $ 78,018 $ (8,301) $ (36,331) $ 33,387 $ (32,827) $ 560 December 31, 2022 63,029 (2,788) (26,898) 33,342 (30,753) 2,589 Gross Amounts Recognized Gross Amounts Subject to Master Netting Arrangements Offset on the Consolidated Balance Sheets Net Amounts Presented on the Consolidated Balance Sheets Gross Amounts Not Offset on the Consolidated Balance Sheets ($ in thousands) Derivative Cash Collateral Pledged Security Collateral Pledged Net Derivative liabilities March 31, 2023 $ 8,676 $ (8,301) $ (342) $ 34 $ — $ 34 December 31, 2022 3,096 (2,788) (217) 91 — 91

Commitments, Off-Balance Shee_2

Commitments, Off-Balance Sheet Arrangements, Legal Proceedings and Regulatory Matters (Tables)	3 Months Ended
	Mar. 31, 2023
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, 2023 Dec 31, 2022 Commitments to extend credit, excluding commitments to originate residential mortgage loans held for sale (a)(b) $ 11,919,626 $ 12,444,275 Commercial letters of credit (a) 5,413 3,188 Standby letters of credit (c) 251,565 270,692
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 March 31, 2023 Year Ended December 31, 2022 Allowance for unfunded commitments Balance at beginning of period $ 38,776 $ 39,776 Provision for unfunded commitments 1,000 (1,000) Balance at end of period $ 39,776 $ 38,776

Fair Value Measurements (Tables

Fair Value Measurements (Tables)	3 Months Ended
	Mar. 31, 2023
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, 2023 and December 31, 2022, aggregated by the level in the fair value hierarchy within which those measurements fall: ($ in thousands) Fair Value Hierarchy Mar 31, 2023 Dec 31, 2022 Assets AFS investment securities: U.S. Treasury securities Level 1 $ 111,743 $ 109,378 Agency securities Level 2 13,730 13,532 Obligations of state and political subdivisions (municipal securities) Level 2 228,902 230,714 Residential mortgage-related securities: FNMA / FHLMC Level 2 1,574,578 1,604,610 GNMA Level 2 1,095,588 497,596 Commercial mortgage-related securities: FNMA / FHLMC Level 2 17,618 17,142 GNMA Level 2 189,466 110,462 Asset backed securities: FFELP Level 2 143,084 151,191 SBA Level 2 3,983 4,477 Other debt securities Level 2 2,918 2,922 Total AFS investment securities Level 1 $ 111,743 $ 109,378 Total AFS investment securities Level 2 3,269,864 2,632,647 Equity securities with readily determinable fair values Level 1 6,286 5,991 Residential loans held for sale Level 2 35,742 20,383 Mortgage servicing rights, net Level 3 74,479 77,351 Interest rate-related instruments designated as hedging instruments (a) Level 2 19,416 4,349 Interest rate-related and other instruments not designated as hedging instruments (a) Level 2 71,619 62,401 Foreign currency exchange forwards (a) Level 2 3,313 1,922 Interest rate lock commitments to originate residential mortgage loans held for sale Level 3 338 86 Liabilities Interest rate-related instruments designated as hedging instruments (a) Level 2 $ — $ 1,260 Interest rate-related and other instruments not designated as hedging instruments (a) Level 2 199,339 251,398 Foreign currency exchange forwards (a) Level 2 3,194 1,801 Forward commitments to sell residential mortgage loans Level 3 441 46 (a) Figures are presented gross before netting. See Note 9 and Note 10 for information relating to the impact of offsetting derivative assets and liabilities and cash collateral with the
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, 2023 and the year ended December 31, 2022, for the Corporation's mortgage derivatives measured on a recurring basis and classified within Level 3 of the fair value hierarchy: ($ in thousands) Interest rate lock commitments to originate residential mortgage loans held for sale Forward commitments to sell residential mortgage loans Total Balance December 31, 2021 $ 2,617 $ (30) $ 2,647 New production 10,442 (2,028) 12,470 Closed loans / settlements (913) 24,766 (25,679) Other (12,060) (22,662) 10,603 Change in mortgage derivative (2,531) 76 (2,607) Balance December 31, 2022 $ 86 $ 46 $ 40 New production $ 1,134 $ (294) $ 1,429 Closed loans / settlements (570) 46 (616) Other (312) 644 (956) Change in mortgage derivative 252 395 (143) Balance March 31, 2023 $ 338 $ 441 $ (103)
Equity securities without readily determinable fair value	The following table presents the carrying value of equity securities without readily determinable fair values still held as of March 31, 2023 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, 2023: ($ in thousands) Equity securities without readily determinable fair values Carrying value as of December 31, 2022 $ 19,225 Carrying value changes — Purchases 5,003 Sales — Carrying value as of March 31, 2023 $ 24,228 Cumulative upward carrying value changes between January 1, 2018 and March 31, 2023 $ 19,134 Cumulative downward carrying value changes/impairment between January 1, 2018 and March 31, 2023 $ —
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: ($ in thousands) Fair Value Hierarchy Fair Value Consolidated Statements of Income Category of Adjustment Recognized in Income Adjustment Recognized on the Consolidated Statements of Income (a) March 31, 2023 Assets Individually evaluated loans Level 3 $ 35,499 Provision for credit losses $ 4,608 OREO (b) Level 2 70 Other noninterest expense / provision for credit losses (c) 46 December 31, 2022 Assets Individually evaluated loans Level 3 $ 23,584 Provision for credit losses $ 4,405 OREO (b) Level 2 2,196 Other noninterest expense / provision for credit losses (c) 971 Equity securities without readily determinable fair values Level 3 19,134 Investment securities gains (losses), net 5,690
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 the unobservable inputs that are readily quantifiable pertaining to Level 3 measurements: March 31, 2023 Valuation Technique Significant Unobservable Input Range of Inputs Weighted Average Input Applied Mortgage servicing rights Discounted cash flow Option adjusted spread 6% - 9% 7% Mortgage servicing rights Discounted cash flow Constant prepayment rate —% - 100% 7% Individually evaluated loans Appraisals / Discounted cash flow Collateral / Discount factor 25% - 48% 35% Interest rate lock commitments to originate residential mortgage loans held for sale Discounted cash flow Closing Ratio 5% - 100% 74%
Estimated fair values of financial instruments	Fair value estimates are set forth below for the Corporation’s financial instruments: Mar 31, 2023 Dec 31, 2022 ($ in thousands) Fair Value Hierarchy Level Carrying Amount Fair Value Carrying Amount Fair Value Financial assets Cash and due from banks Level 1 $ 311,269 $ 311,269 $ 436,952 $ 436,952 Interest-bearing deposits in other financial institutions Level 1 511,116 511,116 156,693 156,693 Federal funds sold and securities purchased under agreements to resell Level 1 455 455 27,810 27,810 AFS investment securities Level 1 111,743 111,743 109,378 109,378 AFS investment securities Level 2 3,269,864 3,269,864 2,632,647 2,632,647 HTM investment securities, net Level 1 999 947 999 936 HTM investment securities, net Level 2 3,966,060 3,480,530 3,959,399 3,400,028 Equity securities with readily determinable fair values Level 1 6,286 6,286 5,991 5,991 Equity securities without readily determinable fair values Level 2 5,000 5,000 — — Equity securities without readily determinable fair values Level 3 19,228 19,228 19,225 19,225 FHLB and Federal Reserve Bank stocks Level 2 331,420 331,420 295,496 295,496 Residential loans held for sale Level 2 35,742 35,742 20,383 20,383 Commercial loans held for sale Level 2 33,490 33,490 — — Loans, net Level 3 28,880,640 27,921,022 28,486,849 27,481,426 Bank and corporate owned life insurance Level 2 677,328 677,328 676,530 676,530 Mortgage servicing rights, net Level 3 74,479 74,479 77,351 77,351 Derivatives (other assets) (a) Level 2 94,349 94,349 68,672 68,672 Interest rate lock commitments to originate residential mortgage loans held for sale (other assets) Level 3 338 338 86 86 Financial liabilities Noninterest-bearing demand, savings, interest-bearing demand, and money market accounts Level 3 $ 27,393,908 $ 27,393,908 $ 27,705,996 $ 27,705,996 Brokered CDs and other time deposits (b) Level 2 2,937,916 2,937,916 1,930,158 1,930,158 Short-term funding Level 2 226,608 226,600 605,937 605,205 FHLB advances Level 2 4,986,138 4,987,658 4,319,861 4,322,264 Other long-term funding Level 2 544,103 535,836 248,071 242,151 Standby letters of credit (c) Level 2 2,717 2,717 2,881 2,881 Derivatives (accrued expenses and other liabilities) (a) Level 2 202,533 202,533 254,459 254,459 Forward commitments to sell residential mortgage loans (accrued expenses and other liabilities) Level 3 441 441 46 46 (a) Figures are presented gross before netting. See Note 9 and Note 10 for information relating to the impact of offsetting derivative assets and liabilities and cash collateral with the

Retirement Plans (Tables)

Retirement Plans (Tables)	3 Months Ended
	Mar. 31, 2023
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, 2023 and 2022 were as follows: Three Months Ended Mar 31, ($ in thousands) 2023 2022 RAP Service cost $ 796 $ 923 Interest cost 2,686 1,772 Expected return on plan assets (8,202) (6,736) Amortization of prior service cost (63) (63) Amortization of actuarial loss 37 74 Total net periodic pension cost $ (4,746) $ (4,029) Postretirement Plan Interest cost $ 20 $ 13 Amortization of prior service cost (19) (19) Amortization of actuarial loss (gain) (7) — Total net periodic benefit cost $ (7) $ (6)

Segment Reporting (Tables)

Segment Reporting (Tables)	3 Months Ended
	Mar. 31, 2023
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) 2023 2022 Net interest income $ 219,123 $ 90,633 Net intersegment interest income (expense) (80,980) 8,525 Segment net interest income 138,143 99,158 Noninterest income 32,715 37,728 Total revenue 170,858 136,886 Provision for credit losses 13,782 12,653 Noninterest expense 62,061 56,528 Income before income taxes 95,015 67,705 Income tax expense 17,737 12,307 Net income $ 77,278 $ 55,399 Allocated goodwill $ 525,836 $ 525,836 Community, Consumer, and Business Three Months Ended Mar 31, ($ in thousands) 2023 2022 Net interest income $ 80,284 $ 69,544 Net intersegment interest income 88,079 18,833 Segment net interest income 168,363 88,377 Noninterest income 25,949 33,207 Total revenue 194,312 121,584 Provision for credit losses 6,758 4,656 Noninterest expense 111,694 98,461 Income before income taxes 75,860 18,466 Income tax expense 15,931 3,878 Net income $ 59,930 $ 14,588 Allocated goodwill $ 579,156 $ 579,156 Risk Management and Shared Services Three Months Ended Mar 31, ($ in thousands) 2023 2022 Net interest income $ (25,397) $ 27,570 Net intersegment (expense) (7,099) (27,358) Segment net interest income (loss) (32,496) 212 Noninterest income 3,409 3,532 Total revenue (29,087) 3,744 Provision for credit losses (2,568) (21,300) Noninterest expense 13,658 18,303 Income (loss) before income taxes (40,176) 6,741 Income tax expense (benefit) (6,328) 2,465 Net income (loss) $ (33,848) $ 4,275 Allocated goodwill $ — $ — Consolidated Total Three Months Ended Mar 31, ($ in thousands) 2023 2022 Net interest income $ 274,010 $ 187,747 Net intersegment interest income — — Segment net interest income 274,010 187,747 Noninterest income 62,073 74,467 Total revenue 336,083 262,214 Provision for credit losses 17,971 (3,990) Noninterest expense 187,412 173,292 Income before income taxes 130,700 92,912 Income tax expense 27,340 18,650 Net income $ 103,360 $ 74,262 Allocated goodwill $ 1,104,992 $ 1,104,992

Accumulated Other Comprehensi_2

Accumulated Other Comprehensive Income (Loss) (Tables)	3 Months Ended
	Mar. 31, 2023
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, 2023 and 2022, including changes during the preceding three month periods as well as any reclassifications out of accumulated other comprehensive income (loss): ($ in thousands) AFS Investment Cash Flow Hedge Derivatives Defined Benefit Accumulated Balance December 31, 2022 $ (233,192) $ 3,360 $ (42,968) $ (272,799) Other comprehensive income before reclassifications 36,478 — — 36,478 Amounts reclassified from accumulated other comprehensive income (loss): HTM investment securities, net, at amortized cost 2,267 — — 2,267 Other assets / accrued expenses and other liabilities — 13,763 — 13,763 Interest income — 1,262 — 1,262 Personnel expense — — (81) (81) Other expense — — 30 30 Income tax (expense) benefit (9,892) (4,694) 79 (14,507) Net other comprehensive income during period 28,853 10,331 27 39,211 Balance March 31, 2023 $ (204,339) $ 13,691 $ (42,940) $ (233,588) 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) HTM investment securities, 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)

Leases (Tables)

Leases (Tables)	3 Months Ended
	Mar. 31, 2023
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) 2023 2022 Operating lease costs $ 1,464 $ 1,798 Finance lease costs 23 41 Operating lease cash flows 1,828 2,407 Finance lease cash flows 22 44
Components of lease expense	The lease classifications on the consolidated balance sheets were as follows: ($ in thousands) Consolidated Balance Sheets Category Mar 31, 2023 Dec 31, 2022 Operating lease right-of-use asset Premises and equipment $ 24,377 $ 25,617 Finance lease right-of-use asset Other assets 433 455 Operating lease liability Accrued expenses and other liabilities 26,938 28,357 Finance lease liability Other long-term funding 448 469
Operating lease information	The lease payment obligations, weighted-average remaining lease term, and weighted-average original discount rate were as follows: Mar 31, 2023 Dec 31, 2022 ($ 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 Retail and corporate offices $ 24,738 5.76 2.63 % $ 26,140 5.92 2.62 % Land 4,569 7.44 3.15 % 4,766 7.59 3.14 % Equipment — 0.00 — % — 0.00 — % Total operating leases $ 29,307 6.01 2.71 % $ 30,906 6.17 2.70 % Finance leases Retail and corporate offices $ 463 5.00 1.32 % $ 485 5.25 1.32 % Total finance leases $ 463 5.00 1.32 % $ 485 5.25 1.32 %
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, 2023 $ 4,540 $ 69 $ 4,609 2024 5,735 93 5,827 2025 4,512 93 4,605 2026 4,246 93 4,339 2027 3,807 93 3,899 Beyond 2027 6,468 23 6,491 Total lease payments $ 29,307 $ 463 $ 29,770 Less: interest 2,369 15 2,384 Present value of lease payments $ 26,938 $ 448 $ 27,386

Acquisitions (Details Textuals)

Acquisitions (Details Textuals) - USD ($) $ in Thousands	Mar. 31, 2023	Dec. 31, 2022
Business Acquisition [Line Items]
Deposits	$ 30,331,824	$ 29,636,154

Summary of Significant Accoun_3

Summary of Significant Accounting Policies (Details) (Textuals) $ in Thousands	Jan. 01, 2022 USD ($)
Accounting Changes and Error Corrections [Abstract]
Cumulative effect of accounting methodology change	$ 2,296

Earnings Per Common Share (Deta

Earnings Per Common Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Earnings Per Share [Abstract]
Net income	$ 103,360	$ 74,262
Preferred stock dividends	(2,875)	(2,875)
Net income available to common equity	100,485	71,387
Common shareholder dividends	(31,808)	(30,372)
Unvested share-based payment awards	(205)	(211)
Undistributed earnings	68,472	40,804
Undistributed earnings allocated to common shareholders	68,086	40,548
Undistributed earnings allocated to unvested share-based payment awards	386	256
Basic
Distributed earnings to common shareholders	31,808	30,372
Undistributed earnings allocated to common shareholders	68,086	40,548
Total common shareholders earnings, basic	99,894	70,920
Diluted
Distributed earnings to common shareholders	31,808	30,372
Undistributed earnings allocated to common shareholders	68,086	40,548
Total common shareholders earnings, diluted	$ 99,894	$ 70,920
Weighted average common shares outstanding	149,763	148,781
Effect of dilutive common stock awards	1,365	1,711
Diluted weighted average common shares outstanding	151,128	150,492
Basic earnings per common share	$ 0.67	$ 0.48
Diluted earnings per common share	$ 0.66	$ 0.47

Earnings Per Common Share (De_2

Earnings Per Common Share (Details Textuals) - shares	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
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	2,000,000	2,000,000

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, 2023	Dec. 31, 2022
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]
Stock Options Shares Outstanding, Beginning balance (in shares)	3,994
Exercised	34
Forfeited or expired	0
Stock Options Shares Outstanding, Ending balance (in shares)	3,960	3,994
Options exercisable (in shares)	3,746
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)	$ 21.06
Exercised	17.07
Forfeited	0
Stock Option Outstanding, Weighted Average Exercise Price, Ending balance (in usd per share)	21.10	$ 21.06
Options Exercisable, Weighted Average Exercise Price (in usd per share)	$ 21.27
Stock Options Outstanding, Weighted Average Remaining Contractual Term	4 years 10 months 13 days	5 years 1 month 9 days
Options exercisable, Weighted Average Remaining Contractual Term	4 years 9 months
Stock Options Outstanding, Aggregate Intrinsic Value, Beginning balance	$ 10,525
Stock Options Outstanding, Aggregate Intrinsic Value, Ending balance	1,039	$ 10,525
Options exercisable, Aggregate Intrinsic Value	$ 887

Stock-Based Compensation, Restr

Stock-Based Compensation, Restricted Stock Activity (Details) shares in Thousands	3 Months Ended
	Mar. 31, 2023 $ / shares shares
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	2,303
Granted | shares	813
Vested | shares	630
Forfeited | shares	2
Outstanding Shares, Ending balance (in shares) | shares	2,484
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	$ 20.81
Granted, Weighted Average Grant Date Fair Value | $ / shares	22.67
Vested, Weighted Average Grant Date Fair Value | $ / shares	20.99
Forfeited, Weighted Average Grant Date Fair Value | $ / shares	21.92
Outstanding Weighted Average Grant Date Fair Value, Ending balance (in usd per share) | $ / shares	$ 21.38

Stock-Based Compensation (Detai

Stock-Based Compensation (Details Textuals) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Share-based Compensation Arrangement by Share-based Payment Award
Intrinsic value of stock options exercised	$ 219	$ 3,000
Total fair value of vested stock options	$ 955	2,000
Minimum
Share-based Compensation Arrangement by Share-based Payment Award
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage	0%
Maximum
Share-based Compensation Arrangement by Share-based Payment Award
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage	150%
Employee Stock Option
Share-based Compensation Arrangement by Share-based Payment Award
Recognized compensation expense for vesting	$ 108	241
Unvested share-based payment awards	270
Share-based Payment Arrangement, Expense	$ 108	$ 241
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
Remaining requisite service periods, extend through	first quarter of 2027
Recognized compensation expense for accelerated vesting	$ 3,000
Unvested share-based payment awards	31,000
Share-based Payment Arrangement, Expense	6,000
Share-based Payment Arrangement, Accelerated Cost	$ 3,000

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, 2023	Dec. 31, 2022
Schedule of Available-for-sale and Held-to-maturity Securities [Line Items]
Debt Securities, Available-for-sale, Amortized Cost	$ 3,600,137	$ 2,997,032
Debt Securities, Available-for-sale, Unrealized Gain	7,854	830
Debt Securities, Available-for-sale, Unrealized Loss	(226,383)	(255,837)
AFS investment securities, at fair value	3,381,607	2,742,025
Debt Securities, Held-to-Maturity, Amortized Cost, before Allowance for Credit Loss	3,967,083	3,960,451
Held-to-maturity, Gross Unrealized Gains	61,768	60,978
Held-to-maturity, Gross Unrealized Loss	(547,349)	(620,411)
Held-to-maturity, Fair Value	3,481,502	3,401,018
US Treasury Securities
Schedule of Available-for-sale and Held-to-maturity Securities [Line Items]
Debt Securities, Available-for-sale, Amortized Cost	124,478	124,441
Debt Securities, Available-for-sale, Unrealized Gain	0	0
Debt Securities, Available-for-sale, Unrealized Loss	(12,735)	(15,063)
AFS investment securities, at fair value	111,743	109,378
Debt Securities, Held-to-Maturity, Amortized Cost, before Allowance for Credit Loss	999	999
Held-to-maturity, Gross Unrealized Gains	0	0
Held-to-maturity, Gross Unrealized Loss	(51)	(62)
Held-to-maturity, Fair Value	947	936
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	(1,271)	(1,468)
AFS investment securities, at fair value	13,730	13,532
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	230,673	235,693
Debt Securities, Available-for-sale, Unrealized Gain	291	96
Debt Securities, Available-for-sale, Unrealized Loss	(2,063)	(5,074)
AFS investment securities, at fair value	228,902	230,714
Debt Securities, Held-to-Maturity, Amortized Cost, before Allowance for Credit Loss	1,720,177	1,732,351
Held-to-maturity, Gross Unrealized Gains	4,888	1,994
Held-to-maturity, Gross Unrealized Loss	(146,544)	(182,697)
Held-to-maturity, Fair Value	1,578,521	1,551,647
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
AFS investment securities, at fair value	0
Debt Securities, Held-to-Maturity, Amortized Cost, before Allowance for Credit Loss	361,170	364,728
Held-to-maturity, Gross Unrealized Gains	11,242	11,697
Held-to-maturity, Gross Unrealized Loss	(71,147)	(72,920)
Held-to-maturity, Fair Value	301,265	303,505
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	147,876	157,138
Debt Securities, Available-for-sale, Unrealized Gain	0	0
Debt Securities, Available-for-sale, Unrealized Loss	(4,791)	(5,947)
AFS investment securities, at fair value	143,084	151,191
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	4,020	4,512
Debt Securities, Available-for-sale, Unrealized Gain	13	15
Debt Securities, Available-for-sale, Unrealized Loss	(50)	(51)
AFS investment securities, at fair value	3,983	4,477
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	(82)	(78)
AFS investment securities, at fair value	2,918	2,922
FNMA/FHLMC | Residential Related Securities
Schedule of Available-for-sale and Held-to-maturity Securities [Line Items]
Debt Securities, Available-for-sale, Amortized Cost	1,768,846	1,820,642
Debt Securities, Available-for-sale, Unrealized Gain	260	404
Debt Securities, Available-for-sale, Unrealized Loss	(194,529)	(216,436)
AFS investment securities, at fair value	1,574,578	1,604,610
Debt Securities, Held-to-Maturity, Amortized Cost, before Allowance for Credit Loss	981,065	961,231
Held-to-maturity, Gross Unrealized Gains	30,284	31,301
Held-to-maturity, Gross Unrealized Loss	(163,514)	(175,760)
Held-to-maturity, Fair Value	847,835	816,771
FNMA/FHLMC | Commercial mortgage-related securities
Schedule of Available-for-sale and Held-to-maturity Securities [Line Items]
Debt Securities, Available-for-sale, Amortized Cost	18,952	19,038
Debt Securities, Available-for-sale, Unrealized Gain	0	0
Debt Securities, Available-for-sale, Unrealized Loss	(1,335)	(1,896)
AFS investment securities, at fair value	17,618	17,142
Debt Securities, Held-to-Maturity, Amortized Cost, before Allowance for Credit Loss	785,516	778,796
Held-to-maturity, Gross Unrealized Gains	14,657	15,324
Held-to-maturity, Gross Unrealized Loss	(156,369)	(178,281)
Held-to-maturity, Fair Value	643,803	615,839
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, Amortized Cost	1,092,742	502,537
Debt Securities, Available-for-sale, Unrealized Gain	7,273	314
Debt Securities, Available-for-sale, Unrealized Loss	(4,427)	(5,255)
AFS investment securities, at fair value	1,095,588	497,596
Debt Securities, Held-to-Maturity, Amortized Cost, before Allowance for Credit Loss	53,298	52,979
Held-to-maturity, Gross Unrealized Gains	195	85
Held-to-maturity, Gross Unrealized Loss	(2,897)	(3,436)
Held-to-maturity, Fair Value	50,596	49,628
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, Amortized Cost	194,550	115,031
Debt Securities, Available-for-sale, Unrealized Gain	17	0
Debt Securities, Available-for-sale, Unrealized Loss	(5,101)	(4,569)
AFS investment securities, at fair value	189,466	110,462
Debt Securities, Held-to-Maturity, Amortized Cost, before Allowance for Credit Loss	64,859	69,369
Held-to-maturity, Gross Unrealized Gains	502	577
Held-to-maturity, Gross Unrealized Loss	(6,826)	(7,254)
Held-to-maturity, Fair Value	$ 58,536	$ 62,691

Investment Securities, AFS an_2

Investment Securities, AFS and HTM Contractual Maturities (Details) - USD ($) $ in Thousands	Mar. 31, 2023	Dec. 31, 2022
Amortized Cost
Available for Sale, Due in one year or less	$ 6,773
Available for Sale, Due after one year through five years	179,763
Available for Sale, Due after five years through ten years	150,181
Available for Sale, Due after ten years	36,434
Debt Securities, Available-for-sale, Maturity, without Single Maturity Date, Amortized Cost	373,151
Available for Sale, Total debt securities	3,600,137	$ 2,997,032
Fair Value
Available for Sale, Due in one year or less	6,768
Available for Sale, Due after one year through five years	165,292
Available for Sale, Due after five years through ten years	149,003
Available for Sale, Due after ten years	36,229
Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, Fair Value	357,292
Available for Sale, Total debt securities	$ 3,381,607	2,742,025
Available for Sale, Ratio of Fair Value to Amortized Cost	93.90%
Amortized Cost
Held to Maturity, Due in one year or less	$ 14,358
Held to Maturity, Due after one year through five years	36,046
Held to Maturity, Due after five years through ten years	161,217
Held to Maturity, Due after ten years	1,509,554
Held to Maturity, Total Debt Securities	1,721,175
Held to Maturity, Amortized Cost	3,967,083	3,960,451
Fair Value
Held to Maturity, Due in one year or less	14,350
Held to Maturity, Due after one year through five years	35,926
Held to Maturity, Due after five years through ten years	159,591
Held to Maturity, Due after ten years	1,369,602
Held to Maturity, Securities, Debt Securities	1,579,468
Held to Maturity, Total debt securities at fair value	$ 3,481,502	3,401,018
Held to Maturity, Ratio of Fair Value to Amortized Cost	87.80%
Mortgage-backed Securities, Issued by Private Enterprises [Member]
Amortized Cost
Available for Sale, Total debt securities	$ 0
Fair Value
Available for Sale, Total debt securities	0
Amortized Cost
Held to Maturity, Amortized Cost	361,170	364,728
Fair Value
Held to Maturity, Total debt securities at fair value	301,265	303,505
Federal Family Education Loan Program (FFELP) Guaranteed Loans [Member]
Amortized Cost
Available for Sale, Total debt securities	147,876	157,138
Fair Value
Available for Sale, Total debt securities	143,084	151,191
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	4,020	4,512
Fair Value
Available for Sale, Total debt securities	3,983	4,477
Amortized Cost
Held to Maturity, Amortized Cost	0
Fair Value
Held to Maturity, Total debt securities at fair value	0
FNMA/FHLMC | Residential Related Securities
Amortized Cost
Available for Sale, Total debt securities	1,768,846	1,820,642
Fair Value
Available for Sale, Total debt securities	1,574,578	1,604,610
Amortized Cost
Held to Maturity, Amortized Cost	981,065	961,231
Fair Value
Held to Maturity, Total debt securities at fair value	847,835	816,771
FNMA/FHLMC | Commercial mortgage-related securities
Amortized Cost
Available for Sale, Total debt securities	18,952	19,038
Fair Value
Available for Sale, Total debt securities	17,618	17,142
Amortized Cost
Held to Maturity, Amortized Cost	785,516	778,796
Fair Value
Held to Maturity, Total debt securities at fair value	643,803	615,839
Government National Mortgage Association (GNMA) [Member] | Residential Related Securities
Amortized Cost
Available for Sale, Total debt securities	1,092,742	502,537
Fair Value
Available for Sale, Total debt securities	1,095,588	497,596
Amortized Cost
Held to Maturity, Amortized Cost	53,298	52,979
Fair Value
Held to Maturity, Total debt securities at fair value	50,596	49,628
Government National Mortgage Association (GNMA) [Member] | Commercial mortgage-related securities
Amortized Cost
Available for Sale, Total debt securities	194,550	115,031
Fair Value
Available for Sale, Total debt securities	189,466	110,462
Amortized Cost
Held to Maturity, Amortized Cost	64,859	69,369
Fair Value
Held to Maturity, Total debt securities at fair value	$ 58,536	$ 62,691

Investment Securities, HTM Cred

Investment Securities, HTM Credit Quality Indicators (Details) - USD ($) $ in Thousands	Mar. 31, 2023	Dec. 31, 2022
Schedule of Held-to-maturity Securities [Line Items]
Debt Securities, Held-to-Maturity, Amortized Cost, before Allowance for Credit Loss	$ 3,967,083	$ 3,960,451
US Treasury Securities
Schedule of Held-to-maturity Securities [Line Items]
Debt Securities, Held-to-Maturity, Amortized Cost, before Allowance for Credit Loss	999	999
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	1,720,177	1,732,351
Residential Related Securities | FNMA/FHLMC
Schedule of Held-to-maturity Securities [Line Items]
Debt Securities, Held-to-Maturity, Amortized Cost, before Allowance for Credit Loss	981,065	961,231
Residential Related Securities | Government National Mortgage Association (GNMA) [Member]
Schedule of Held-to-maturity Securities [Line Items]
Debt Securities, Held-to-Maturity, Amortized Cost, before Allowance for Credit Loss	53,298	52,979
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	361,170	364,728
Commercial mortgage-related securities | FNMA/FHLMC
Schedule of Held-to-maturity Securities [Line Items]
Debt Securities, Held-to-Maturity, Amortized Cost, before Allowance for Credit Loss	785,516	778,796
Commercial mortgage-related securities | Government National Mortgage Association (GNMA) [Member]
Schedule of Held-to-maturity Securities [Line Items]
Debt Securities, Held-to-Maturity, Amortized Cost, before Allowance for Credit Loss	64,859	69,369
Not Rated [Domain]
Schedule of Held-to-maturity Securities [Line Items]
Debt Securities, Held-to-Maturity, Amortized Cost, before Allowance for Credit Loss	1,157	1,158
Not Rated [Domain] | 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
Not Rated [Domain] | 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	1,157	1,158
Not Rated [Domain] | Residential Related Securities | FNMA/FHLMC
Schedule of Held-to-maturity Securities [Line Items]
Debt Securities, Held-to-Maturity, Amortized Cost, before Allowance for Credit Loss	0	0
Not Rated [Domain] | Residential Related Securities | Government National Mortgage Association (GNMA) [Member]
Schedule of Held-to-maturity Securities [Line Items]
Debt Securities, Held-to-Maturity, Amortized Cost, before Allowance for Credit Loss	0	0
Not Rated [Domain] | 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	0	0
Not Rated [Domain] | Commercial mortgage-related securities | FNMA/FHLMC
Schedule of Held-to-maturity Securities [Line Items]
Debt Securities, Held-to-Maturity, Amortized Cost, before Allowance for Credit Loss	0	0
Not Rated [Domain] | Commercial mortgage-related securities | Government National Mortgage Association (GNMA) [Member]
Schedule of Held-to-maturity Securities [Line Items]
Debt Securities, Held-to-Maturity, Amortized Cost, before Allowance for Credit Loss	0	0
AAA
Schedule of Held-to-maturity Securities [Line Items]
Debt Securities, Held-to-Maturity, Amortized Cost, before Allowance for Credit Loss	3,054,635	3,034,630
AAA | US Treasury Securities
Schedule of Held-to-maturity Securities [Line Items]
Debt Securities, Held-to-Maturity, Amortized Cost, before Allowance for Credit Loss	999	999
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	807,729	806,529
AAA | Residential Related Securities | FNMA/FHLMC
Schedule of Held-to-maturity Securities [Line Items]
Debt Securities, Held-to-Maturity, Amortized Cost, before Allowance for Credit Loss	981,065	961,231
AAA | Residential Related Securities | Government National Mortgage Association (GNMA) [Member]
Schedule of Held-to-maturity Securities [Line Items]
Debt Securities, Held-to-Maturity, Amortized Cost, before Allowance for Credit Loss	53,298	52,979
AAA | 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	361,170	364,728
AAA | Commercial mortgage-related securities | FNMA/FHLMC
Schedule of Held-to-maturity Securities [Line Items]
Debt Securities, Held-to-Maturity, Amortized Cost, before Allowance for Credit Loss	785,516	778,796
AAA | Commercial mortgage-related securities | Government National Mortgage Association (GNMA) [Member]
Schedule of Held-to-maturity Securities [Line Items]
Debt Securities, Held-to-Maturity, Amortized Cost, before Allowance for Credit Loss	64,859	69,369
AA
Schedule of Held-to-maturity Securities [Line Items]
Debt Securities, Held-to-Maturity, Amortized Cost, before Allowance for Credit Loss	903,689	917,059
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	903,689	917,059
AA | Residential Related Securities | FNMA/FHLMC
Schedule of Held-to-maturity Securities [Line Items]
Debt Securities, Held-to-Maturity, Amortized Cost, before Allowance for Credit Loss	0	0
AA | Residential Related Securities | Government National Mortgage Association (GNMA) [Member]
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]
Schedule of Held-to-maturity Securities [Line Items]
Debt Securities, Held-to-Maturity, Amortized Cost, before Allowance for Credit Loss	0	0
AA | Commercial mortgage-related securities | FNMA/FHLMC
Schedule of Held-to-maturity Securities [Line Items]
Debt Securities, Held-to-Maturity, Amortized Cost, before Allowance for Credit Loss	0	0
AA | Commercial mortgage-related securities | Government National Mortgage Association (GNMA) [Member]
Schedule of Held-to-maturity Securities [Line Items]
Debt Securities, Held-to-Maturity, Amortized Cost, before Allowance for Credit Loss	0	0
A
Schedule of Held-to-maturity Securities [Line Items]
Debt Securities, Held-to-Maturity, Amortized Cost, before Allowance for Credit Loss	7,602	7,604
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	7,602	7,604
A | Residential Related Securities | FNMA/FHLMC
Schedule of Held-to-maturity Securities [Line Items]
Debt Securities, Held-to-Maturity, Amortized Cost, before Allowance for Credit Loss	0	0
A | Residential Related Securities | Government National Mortgage Association (GNMA) [Member]
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]
Schedule of Held-to-maturity Securities [Line Items]
Debt Securities, Held-to-Maturity, Amortized Cost, before Allowance for Credit Loss	0	0
A | Commercial mortgage-related securities | FNMA/FHLMC
Schedule of Held-to-maturity Securities [Line Items]
Debt Securities, Held-to-Maturity, Amortized Cost, before Allowance for Credit Loss	0	0
A | Commercial mortgage-related securities | Government National Mortgage Association (GNMA) [Member]
Schedule of Held-to-maturity Securities [Line Items]
Debt Securities, Held-to-Maturity, Amortized Cost, before Allowance for Credit Loss	$ 0	$ 0

Investment Securities Gain_Loss

Investment Securities Gain/Loss Sale of Securities (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Investments, Debt and Equity Securities [Abstract]
Gross gains on AFS securities	$ 0	$ 21
Gain on sale and net write-up of equity securities	51	0
Investment securities gains (losses), net	51	21
Proceeds from sales of AFS investment securities	$ 0	$ 734

Investment Securities, AFS an_3

Investment Securities, AFS and HTM Securities Gross Unrealized Losses (Details) $ in Thousands	Mar. 31, 2023 USD ($) security	Dec. 31, 2022 USD ($) 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	240	446
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	$ (8,299)	$ (48,263)
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months	$ 558,647	$ 847,391
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Number of Positions | security	238	121
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	$ (218,084)	$ (207,575)
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer	1,942,255	1,576,665
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss	(226,383)	(255,837)
Debt Securities, Available-for-sale, Unrealized Loss Position	2,500,901	2,424,055
HTM investment securities
Unrealized losses on held to maturity securities, less than 12 months	(11,120)	(134,556)
Fair value of unrealized losses on held to maturity securities, less than 12 months	566,017	1,381,511
Unrealized losses on held to maturity securities, 12 months or more	(536,229)	(485,855)
Fair value of unrealized losses on held to maturity securities, 12 months or more	2,384,794	1,752,354
Total unrealized losses on held to maturity securities	(547,349)	(620,411)
Total fair value of unrealized losses on held to maturity securities	$ 2,950,811	$ 3,133,865
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	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	7	7
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	$ (12,735)	$ (15,063)
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer	111,743	109,378
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss	(12,735)	(15,063)
Debt Securities, Available-for-sale, Unrealized Loss Position	111,743	109,378
HTM investment securities
Unrealized losses on held to maturity securities, less than 12 months	0	(62)
Fair value of unrealized losses on held to maturity securities, less than 12 months	0	936
Unrealized losses on held to maturity securities, 12 months or more	(51)	0
Fair value of unrealized losses on held to maturity securities, 12 months or more	947	0
Total unrealized losses on held to maturity securities	(51)	(62)
Total fair value of unrealized losses on held to maturity securities	$ 947	$ 936
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	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	1	1
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	$ (1,271)	$ (1,468)
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer	13,730	13,532
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss	(1,271)	(1,468)
Debt Securities, Available-for-sale, Unrealized Loss Position	$ 13,730	$ 13,532
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	189	358
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	$ (1,025)	$ (5,066)
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months	$ 111,529	$ 201,260
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Number of Positions | security	72	4
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	$ (1,037)	$ (8)
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer	40,199	1,916
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss	(2,063)	(5,074)
Debt Securities, Available-for-sale, Unrealized Loss Position	151,727	203,176
HTM investment securities
Unrealized losses on held to maturity securities, less than 12 months	(7,598)	(96,282)
Fair value of unrealized losses on held to maturity securities, less than 12 months	454,461	1,079,216
Unrealized losses on held to maturity securities, 12 months or more	(138,946)	(86,415)
Fair value of unrealized losses on held to maturity securities, 12 months or more	614,842	231,022
Total unrealized losses on held to maturity securities	(146,544)	(182,697)
Total fair value of unrealized losses on held to maturity securities	1,069,304	1,310,238
Mortgage-backed Securities, Issued by Private Enterprises [Member]
HTM investment securities
Unrealized losses on held to maturity securities, less than 12 months	0	(9,509)
Fair value of unrealized losses on held to maturity securities, less than 12 months	0	58,733
Unrealized losses on held to maturity securities, 12 months or more	(71,147)	(63,411)
Fair value of unrealized losses on held to maturity securities, 12 months or more	301,265	244,772
Total unrealized losses on held to maturity securities	(71,147)	(72,920)
Total fair value of unrealized losses on held to maturity securities	$ 301,265	$ 303,505
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	0	3
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	$ 0	$ (1,668)
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months	$ 0	$ 44,304
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Number of Positions | security	15	12
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	$ (4,791)	$ (4,278)
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer	143,084	106,887
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss	(4,791)	(5,947)
Debt Securities, Available-for-sale, Unrealized Loss Position	$ 143,084	$ 151,191
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	2	2
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	$ (1)	$ (1)
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months	$ 331	$ 417
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Number of Positions | security	6	6
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	$ (49)	$ (50)
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer	1,755	2,057
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss	(50)	(51)
Debt Securities, Available-for-sale, Unrealized Loss Position	$ 2,087	$ 2,474
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	1	2
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	$ (31)	$ (30)
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months	$ 969	$ 1,970
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Number of Positions | security	2	1
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	$ (51)	$ (49)
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer	1,949	951
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss	(82)	(78)
Debt Securities, Available-for-sale, Unrealized Loss Position	$ 2,918	$ 2,922
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	12	24
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	$ (3,619)	$ (31,266)
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months	$ 51,021	$ 260,986
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Number of Positions | security	96	84
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	$ (190,909)	$ (185,170)
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer	1,504,384	1,321,420
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss	(194,529)	(216,436)
Debt Securities, Available-for-sale, Unrealized Loss Position	1,555,405	1,582,406
HTM investment securities
Unrealized losses on held to maturity securities, less than 12 months	(2,881)	(18,925)
Fair value of unrealized losses on held to maturity securities, less than 12 months	75,386	143,201
Unrealized losses on held to maturity securities, 12 months or more	(160,633)	(156,836)
Fair value of unrealized losses on held to maturity securities, 12 months or more	762,280	671,570
Total unrealized losses on held to maturity securities	(163,514)	(175,760)
Total fair value of unrealized losses on held to maturity securities	$ 837,666	$ 814,770
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	0	1
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	$ 0	$ (1,896)
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months	$ 0	$ 17,142
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Number of Positions | security	1	0
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	$ (1,335)	$ 0
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer	17,618	0
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss	(1,335)	(1,896)
Debt Securities, Available-for-sale, Unrealized Loss Position	17,618	17,142
HTM investment securities
Unrealized losses on held to maturity securities, less than 12 months	(473)	(3,814)
Fair value of unrealized losses on held to maturity securities, less than 12 months	29,658	20,338
Unrealized losses on held to maturity securities, 12 months or more	(155,897)	(174,467)
Fair value of unrealized losses on held to maturity securities, 12 months or more	614,153	576,911
Total unrealized losses on held to maturity securities	(156,369)	(178,281)
Total fair value of unrealized losses on held to maturity securities	$ 643,811	$ 597,249
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	23	23
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	$ (2,583)	$ (4,415)
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months	$ 294,212	$ 220,276
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Number of Positions | security	9	2
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	$ (1,844)	$ (840)
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer	33,128	11,096
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss	(4,427)	(5,255)
Debt Securities, Available-for-sale, Unrealized Loss Position	327,340	231,372
HTM investment securities
Unrealized losses on held to maturity securities, less than 12 months	(168)	(3,436)
Fair value of unrealized losses on held to maturity securities, less than 12 months	6,511	44,476
Unrealized losses on held to maturity securities, 12 months or more	(2,729)	0
Fair value of unrealized losses on held to maturity securities, 12 months or more	32,771	0
Total unrealized losses on held to maturity securities	(2,897)	(3,436)
Total fair value of unrealized losses on held to maturity securities	$ 39,282	$ 44,476
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	13	33
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	$ (1,039)	$ (3,920)
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months	$ 100,585	$ 101,036
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Number of Positions | security	29	4
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	$ (4,062)	$ (649)
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer	74,665	9,426
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss	(5,101)	(4,569)
Debt Securities, Available-for-sale, Unrealized Loss Position	175,250	110,462
HTM investment securities
Unrealized losses on held to maturity securities, less than 12 months	0	(2,528)
Fair value of unrealized losses on held to maturity securities, less than 12 months	0	34,612
Unrealized losses on held to maturity securities, 12 months or more	(6,826)	(4,726)
Fair value of unrealized losses on held to maturity securities, 12 months or more	58,536	28,080
Total unrealized losses on held to maturity securities	(6,826)	(7,254)
Total fair value of unrealized losses on held to maturity securities	$ 58,536	$ 62,691
Held to maturity, number of securities, less than 12 months
HTM investment securities
Number of held to maturity securities in a continuous unrealized loss position | security	394	947
Held to maturity, number of securities, less than 12 months | US Treasury Securities
HTM investment securities
Number of held to maturity securities in a continuous unrealized loss position | security	0	1
Held to maturity, number of securities, less than 12 months | US States and Political Subdivisions Debt Securities [Member]
HTM investment securities
Number of held to maturity securities in a continuous unrealized loss position | security	311	771
Held to maturity, number of securities, less than 12 months | Mortgage-backed Securities, Issued by Private Enterprises [Member]
HTM investment securities
Number of held to maturity securities in a continuous unrealized loss position | security	0	3
Held to maturity, number of securities, less than 12 months | FNMA/FHLMC | Residential Related Securities
HTM investment securities
Number of held to maturity securities in a continuous unrealized loss position | security	63	79
Held to maturity, number of securities, less than 12 months | FNMA/FHLMC | Commercial mortgage-related securities
HTM investment securities
Number of held to maturity securities in a continuous unrealized loss position | security	4	4
Held to maturity, number of securities, less than 12 months | Government National Mortgage Association (GNMA) [Member] | Residential Related Securities
HTM investment securities
Number of held to maturity securities in a continuous unrealized loss position | security	16	81
Held to maturity, number of securities, less than 12 months | Government National Mortgage Association (GNMA) [Member] | Commercial mortgage-related securities
HTM investment securities
Number of held to maturity securities in a continuous unrealized loss position | security	0	8
Held to maturity, number of securities, 12 months or more
HTM investment securities
Number of held to maturity securities in a continuous unrealized loss position | security	587	238
Held to maturity, number of securities, 12 months or more | US Treasury Securities
HTM investment securities
Number of held to maturity securities in a continuous unrealized loss position | security	1	0
Held to maturity, number of securities, 12 months or more | US States and Political Subdivisions Debt Securities [Member]
HTM investment securities
Number of held to maturity securities in a continuous unrealized loss position | security	400	156
Held to maturity, number of securities, 12 months or more | Mortgage-backed Securities, Issued by Private Enterprises [Member]
HTM investment securities
Number of held to maturity securities in a continuous unrealized loss position | security	18	15
Held to maturity, number of securities, 12 months or more | FNMA/FHLMC | Residential Related Securities
HTM investment securities
Number of held to maturity securities in a continuous unrealized loss position | security	50	22
Held to maturity, number of securities, 12 months or more | FNMA/FHLMC | Commercial mortgage-related securities
HTM investment securities
Number of held to maturity securities in a continuous unrealized loss position | security	41	39
Held to maturity, number of securities, 12 months or more | Government National Mortgage Association (GNMA) [Member] | Residential Related Securities
HTM investment securities
Number of held to maturity securities in a continuous unrealized loss position | security	63	0
Held to maturity, number of securities, 12 months or more | Government National Mortgage Association (GNMA) [Member] | Commercial mortgage-related securities
HTM investment securities
Number of held to maturity securities in a continuous unrealized loss position | security	14	6

Investment Securities (Details

Investment Securities (Details Textual) - USD ($)	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022	Dec. 31, 2022
Investment Securities Information [Line Items]
Proceeds from sales of AFS investment securities	$ 0	$ 734,000
Debt Instrument, Collateral Amount	2,200,000,000		$ 2,300,000,000
Interest receivable	152,404,000		144,449,000
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	(25,000)		(54,000)
Federal Home Loan Bank Stock	245,000,000		209,000,000
Federal Reserve Bank Stock	87,000,000		87,000,000
Equity securities with readily determinable fair values, Fair Value	6,000,000		6,000,000
Equity Securities without Readily Determinable Fair Value, Amount	24,228,000		19,225,000
Held-to-maturity Securities [Member]
Investment Securities Information [Line Items]
Interest receivable	16,000,000		19,000,000
Available-for-sale Securities [Member]
Investment Securities Information [Line Items]
Interest receivable	12,000,000		9,000,000
Federal Home Loan Bank Certificates and Obligations (FHLB) [Member]
Investment Securities Information [Line Items]
Interest receivable	4,000,000		3,000,000
Federal Reserve Bank Stock [Member]
Investment Securities Information [Line Items]
Interest receivable	776,000		0
US Treasury Securities
Investment Securities Information [Line Items]
Held to maturity allowance for credit loss	0		0
US States and Political Subdivisions Debt Securities [Member]
Investment Securities Information [Line Items]
Held to maturity allowance for credit loss	0		0
Agency mortgage-related securities
Investment Securities Information [Line Items]
Held to maturity allowance for credit loss	$ 0		$ 0

Loans Composition (Details)

Loans Composition (Details) - USD ($) $ in Thousands	Mar. 31, 2023	Dec. 31, 2022
Loans and Leases Receivable Disclosure [Line Items]
Loans	$ 29,207,072	$ 28,799,569
Asset-based lending & equipment finance
Loans and Leases Receivable Disclosure [Line Items]
Loans	522,834	458,887
Commercial and industrial
Loans and Leases Receivable Disclosure [Line Items]
Loans	9,346,947	9,300,567
Commercial real estate — owner occupied
Loans and Leases Receivable Disclosure [Line Items]
Loans	1,050,236	991,722
Commercial and business lending
Loans and Leases Receivable Disclosure [Line Items]
Loans	10,920,017	10,751,176
Commercial real estate — investor
Loans and Leases Receivable Disclosure [Line Items]
Loans	5,094,249	5,080,344
Real estate construction
Loans and Leases Receivable Disclosure [Line Items]
Loans	2,147,070	2,155,222
Commercial real estate lending
Loans and Leases Receivable Disclosure [Line Items]
Loans	7,241,318	7,235,565
Total commercial
Loans and Leases Receivable Disclosure [Line Items]
Loans	18,161,335	17,986,742
Residential mortgage
Loans and Leases Receivable Disclosure [Line Items]
Loans	8,605,164	8,511,550
Auto finance
Loans and Leases Receivable Disclosure [Line Items]
Loans	1,551,538	1,382,073
Home equity
Loans and Leases Receivable Disclosure [Line Items]
Loans	609,787	624,353
Other consumer
Loans and Leases Receivable Disclosure [Line Items]
Loans	279,248	294,851
Total consumer
Loans and Leases Receivable Disclosure [Line Items]
Loans	$ 11,045,737	$ 10,812,828

Loans, Credit Quality Indicator

Loans, Credit Quality Indicator by Vintage Year (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2023	Dec. 31, 2022
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	$ 12,390	$ 53,246
Financing Receivable, Revolving	3,047,870	2,915,297
Financing Receivable, Originated in Current Fiscal Year	1,213,182	8,854,510
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	8,807,663	7,341,574
Financing Receivable, Originated Two Years before Latest Fiscal Year	7,135,000	3,469,992
Financing Receivable, Originated Three Years before Latest Fiscal Year	3,190,512	2,201,004
Financing Receivable, Originated Four Years before Latest Fiscal Year	2,046,450	1,082,280
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	3,766,395	2,934,912
Total	29,207,072	28,799,569
Financing Receivable, Allowance for Credit Loss, Writeoff, by Origination Year [Abstract]
Financing Receivable, Revolving, Writeoff	1,739
Financing Receivable, Year One, Originated, Current Fiscal Year, Writeoff	0
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year, Writeoff	1,189
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year, Writeoff	263
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year, Writeoff	17
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year, Writeoff	29
Financing Receivable, Originated, More than Five Years before Current Fiscal Year, Writeoff	2,264
Charge offs	5,501
Pass [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	2,334	47,152
Financing Receivable, Revolving	2,920,518	2,795,551
Financing Receivable, Originated in Current Fiscal Year	1,160,532	8,711,468
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	8,608,857	7,226,734
Financing Receivable, Originated Two Years before Latest Fiscal Year	6,980,494	3,377,725
Financing Receivable, Originated Three Years before Latest Fiscal Year	3,121,688	2,101,861
Financing Receivable, Originated Four Years before Latest Fiscal Year	2,014,384	1,047,522
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	3,654,303	2,834,303
Total	28,460,776	28,095,164
Special Mention [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	19	52
Financing Receivable, Revolving	87,335	93,801
Financing Receivable, Originated in Current Fiscal Year	18,545	66,443
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	123,869	48,159
Financing Receivable, Originated Two Years before Latest Fiscal Year	53,560	20,772
Financing Receivable, Originated Three Years before Latest Fiscal Year	27,027	43,983
Financing Receivable, Originated Four Years before Latest Fiscal Year	25,189	9,778
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	34,497	43,350
Total	370,023	326,286
Potential Problem [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	141	447
Financing Receivable, Revolving	39,951	25,889
Financing Receivable, Originated in Current Fiscal Year	33,818	59,240
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	59,120	36,709
Financing Receivable, Originated Two Years before Latest Fiscal Year	61,903	56,016
Financing Receivable, Originated Three Years before Latest Fiscal Year	24,739	51,043
Financing Receivable, Originated Four Years before Latest Fiscal Year	2,253	19,637
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	36,919	18,118
Total	258,704	266,651
Nonaccrual Loan [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	9,896	5,595
Financing Receivable, Revolving	65	56
Financing Receivable, Originated in Current Fiscal Year	287	17,360
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	15,816	29,972
Financing Receivable, Originated Two Years before Latest Fiscal Year	39,044	15,479
Financing Receivable, Originated Three Years before Latest Fiscal Year	17,058	4,116
Financing Receivable, Originated Four Years before Latest Fiscal Year	4,624	5,343
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	40,675	39,141
Total	117,569	111,467
Total commercial
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	9,707	44,208
Financing Receivable, Revolving	2,361,089	2,206,480
Financing Receivable, Originated in Current Fiscal Year	886,324	6,122,430
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	6,060,562	5,034,805
Financing Receivable, Originated Two Years before Latest Fiscal Year	4,798,955	1,741,955
Financing Receivable, Originated Three Years before Latest Fiscal Year	1,489,566	1,370,245
Financing Receivable, Originated Four Years before Latest Fiscal Year	1,235,396	698,550
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	1,329,444	812,278
Total	18,161,335	17,986,742
Financing Receivable, Allowance for Credit Loss, Writeoff, by Origination Year [Abstract]
Financing Receivable, Revolving, Writeoff	823
Financing Receivable, Year One, Originated, Current Fiscal Year, Writeoff	0
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year, Writeoff	0
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year, Writeoff	0
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year, Writeoff	0
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year, Writeoff	0
Financing Receivable, Originated, More than Five Years before Current Fiscal Year, Writeoff	2,152
Charge offs	(2,975)
Total commercial | Pass [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	71	39,835
Financing Receivable, Revolving	2,234,544	2,087,396
Financing Receivable, Originated in Current Fiscal Year	834,103	5,990,879
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	5,872,988	4,924,743
Financing Receivable, Originated Two Years before Latest Fiscal Year	4,649,837	1,656,149
Financing Receivable, Originated Three Years before Latest Fiscal Year	1,429,370	1,275,996
Financing Receivable, Originated Four Years before Latest Fiscal Year	1,208,578	669,213
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	1,258,628	750,399
Total	17,488,047	17,354,774
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	86,593	93,209
Financing Receivable, Originated in Current Fiscal Year	18,454	65,379
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	122,689	47,756
Financing Receivable, Originated Two Years before Latest Fiscal Year	53,408	20,671
Financing Receivable, Originated Three Years before Latest Fiscal Year	26,929	43,978
Financing Receivable, Originated Four Years before Latest Fiscal Year	25,151	9,732
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	33,775	42,952
Total	366,999	323,677
Total commercial | Potential Problem [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	128	447
Financing Receivable, Revolving	39,951	25,874
Financing Receivable, Originated in Current Fiscal Year	33,760	58,785
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	58,708	36,638
Financing Receivable, Originated Two Years before Latest Fiscal Year	61,354	56,016
Financing Receivable, Originated Three Years before Latest Fiscal Year	24,739	50,271
Financing Receivable, Originated Four Years before Latest Fiscal Year	1,668	19,606
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	36,596	17,287
Total	256,776	264,476
Total commercial | Nonaccrual Loan [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	9,508	3,926
Financing Receivable, Revolving	0	0
Financing Receivable, Originated in Current Fiscal Year	8	7,387
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	6,177	25,668
Financing Receivable, Originated Two Years before Latest Fiscal Year	34,355	9,119
Financing Receivable, Originated Three Years before Latest Fiscal Year	8,528	0
Financing Receivable, Originated Four Years before Latest Fiscal Year	0	0
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	445	1,640
Total	49,513	43,814
Total commercial | Asset-based lending & equipment finance
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	0	0
Financing Receivable, Revolving	60,256	47,446
Financing Receivable, Originated in Current Fiscal Year	55,535	270,706
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	263,471	121,914
Financing Receivable, Originated Two Years before Latest Fiscal Year	125,609	18,082
Financing Receivable, Originated Three Years before Latest Fiscal Year	17,420	653
Financing Receivable, Originated Four Years before Latest Fiscal Year	543	85
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	0	0
Total	522,834	458,887
Total commercial | Asset-based lending & equipment finance | Pass [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	0	0
Financing Receivable, Revolving	60,256	47,446
Financing Receivable, Originated in Current Fiscal Year	55,535	269,258
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	262,074	121,914
Financing Receivable, Originated Two Years before Latest Fiscal Year	125,609	1,832
Financing Receivable, Originated Three Years before Latest Fiscal Year	1,420	653
Financing Receivable, Originated Four Years before Latest Fiscal Year	543	85
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	0	0
Total	505,437	441,189
Total commercial | Asset-based lending & equipment finance | 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	1,448
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	1,396	0
Financing Receivable, Originated Two Years before Latest Fiscal Year	0	16,250
Financing Receivable, Originated Three Years before Latest Fiscal Year	16,000	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	17,396	17,698
Total commercial | Commercial and Industrial Sector
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	9,698	5,796
Financing Receivable, Revolving	2,130,000	2,009,089
Financing Receivable, Originated in Current Fiscal Year	338,716	3,024,861
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	2,942,451	2,272,895
Financing Receivable, Originated Two Years before Latest Fiscal Year	2,169,643	580,757
Financing Receivable, Originated Three Years before Latest Fiscal Year	483,571	610,636
Financing Receivable, Originated Four Years before Latest Fiscal Year	558,983	330,794
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	723,583	471,535
Total	9,346,947	9,300,567
Financing Receivable, Allowance for Credit Loss, Writeoff, by Origination Year [Abstract]
Financing Receivable, Revolving, Writeoff	823
Financing Receivable, Year One, Originated, Current Fiscal Year, Writeoff	0
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year, Writeoff	0
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year, Writeoff	0
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year, Writeoff	0
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year, Writeoff	0
Financing Receivable, Originated, More than Five Years before Current Fiscal Year, Writeoff	2,152
Charge offs	(2,975)
Total commercial | Commercial and Industrial Sector | Pass [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	71	1,423
Financing Receivable, Revolving	2,003,455	1,891,331
Financing Receivable, Originated in Current Fiscal Year	332,572	2,976,288
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	2,872,816	2,245,094
Financing Receivable, Originated Two Years before Latest Fiscal Year	2,101,488	566,001
Financing Receivable, Originated Three Years before Latest Fiscal Year	467,455	572,467
Financing Receivable, Originated Four Years before Latest Fiscal Year	558,852	330,557
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	685,216	432,906
Total	9,021,853	9,014,644
Total commercial | Commercial and Industrial Sector | Special Mention [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	0	0
Financing Receivable, Revolving	86,593	93,209
Financing Receivable, Originated in Current Fiscal Year	0	3,411
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	30,540	23,607
Financing Receivable, Originated Two Years before Latest Fiscal Year	31,161	0
Financing Receivable, Originated Three Years before Latest Fiscal Year	2,913	0
Financing Receivable, Originated Four Years before Latest Fiscal Year	0	19
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	33,501	32,497
Total	184,709	152,744
Total commercial | Commercial and Industrial Sector | Potential Problem [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	128	447
Financing Receivable, Revolving	39,951	24,549
Financing Receivable, Originated in Current Fiscal Year	6,145	39,952
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	34,388	4,193
Financing Receivable, Originated Two Years before Latest Fiscal Year	27,494	5,637
Financing Receivable, Originated Three Years before Latest Fiscal Year	4,675	38,169
Financing Receivable, Originated Four Years before Latest Fiscal Year	132	218
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	4,865	6,133
Total	117,650	118,851
Total commercial | Commercial and Industrial Sector | Nonaccrual Loan [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	9,500	3,926
Financing Receivable, Revolving	0	0
Financing Receivable, Originated in Current Fiscal Year	0	5,210
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	4,707	0
Financing Receivable, Originated Two Years before Latest Fiscal Year	9,500	9,119
Financing Receivable, Originated Three Years before Latest Fiscal Year	8,528	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	22,735	14,329
Total commercial | Commercial real estate — owner occupied
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	8	0
Financing Receivable, Revolving	22,344	13,772
Financing Receivable, Originated in Current Fiscal Year	89,914	212,883
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	208,269	236,769
Financing Receivable, Originated Two Years before Latest Fiscal Year	245,950	170,624
Financing Receivable, Originated Three Years before Latest Fiscal Year	157,555	172,630
Financing Receivable, Originated Four Years before Latest Fiscal Year	162,667	83,570
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	163,536	101,475
Total	1,050,236	991,722
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	0
Financing Receivable, Revolving	22,344	12,447
Financing Receivable, Originated in Current Fiscal Year	87,095	211,645
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	205,922	225,627
Financing Receivable, Originated Two Years before Latest Fiscal Year	234,300	163,965
Financing Receivable, Originated Three Years before Latest Fiscal Year	150,009	160,370
Financing Receivable, Originated Four Years before Latest Fiscal Year	152,649	73,487
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	151,106	97,420
Total	1,003,424	944,961
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	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	1,136
Financing Receivable, Originated Three Years before Latest Fiscal Year	3,483	1,491
Financing Receivable, Originated Four Years before Latest Fiscal Year	9,500	9,713
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	274	0
Total	13,257	12,339
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	1,325
Financing Receivable, Originated in Current Fiscal Year	2,812	1,238
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	877	11,141
Financing Receivable, Originated Two Years before Latest Fiscal Year	11,651	5,523
Financing Receivable, Originated Three Years before Latest Fiscal Year	4,064	10,769
Financing Receivable, Originated Four Years before Latest Fiscal Year	518	370
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	12,156	4,055
Total	32,077	34,422
Total commercial | Commercial real estate — owner occupied | Nonaccrual Loan [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	8
Financing Receivable, Revolving	0
Financing Receivable, Originated in Current Fiscal Year	8
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	1,470
Financing Receivable, Originated Two Years before Latest Fiscal Year	0
Financing Receivable, Originated Three Years before Latest Fiscal Year	0
Financing Receivable, Originated Four Years before Latest Fiscal Year	0
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	0
Total	1,478
Total commercial | Commercial and business lending
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	9,707	5,796
Financing Receivable, Revolving	2,212,600	2,070,307
Financing Receivable, Originated in Current Fiscal Year	484,166	3,508,450
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	3,414,190	2,631,578
Financing Receivable, Originated Two Years before Latest Fiscal Year	2,541,203	769,463
Financing Receivable, Originated Three Years before Latest Fiscal Year	658,546	783,919
Financing Receivable, Originated Four Years before Latest Fiscal Year	722,194	414,449
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	887,119	573,010
Total	10,920,017	10,751,176
Financing Receivable, Allowance for Credit Loss, Writeoff, by Origination Year [Abstract]
Financing Receivable, Revolving, Writeoff	823
Financing Receivable, Year One, Originated, Current Fiscal Year, Writeoff	0
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year, Writeoff	0
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year, Writeoff	0
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year, Writeoff	0
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year, Writeoff	0
Financing Receivable, Originated, More than Five Years before Current Fiscal Year, Writeoff	2,152
Charge offs	(2,975)
Total commercial | Commercial and business lending | Pass [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	71	1,423
Financing Receivable, Revolving	2,086,055	1,951,224
Financing Receivable, Originated in Current Fiscal Year	475,201	3,457,191
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	3,340,812	2,592,636
Financing Receivable, Originated Two Years before Latest Fiscal Year	2,461,397	731,798
Financing Receivable, Originated Three Years before Latest Fiscal Year	618,883	733,490
Financing Receivable, Originated Four Years before Latest Fiscal Year	712,044	404,129
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	836,323	530,326
Total	10,530,715	10,400,794
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	86,593	93,209
Financing Receivable, Originated in Current Fiscal Year	0	3,411
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	30,540	23,607
Financing Receivable, Originated Two Years before Latest Fiscal Year	31,161	1,136
Financing Receivable, Originated Three Years before Latest Fiscal Year	6,396	1,491
Financing Receivable, Originated Four Years before Latest Fiscal Year	9,500	9,732
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	33,775	32,497
Total	197,965	165,083
Total commercial | Commercial and business lending | Potential Problem [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	128	447
Financing Receivable, Revolving	39,951	25,874
Financing Receivable, Originated in Current Fiscal Year	8,956	42,638
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	36,661	15,335
Financing Receivable, Originated Two Years before Latest Fiscal Year	39,145	27,410
Financing Receivable, Originated Three Years before Latest Fiscal Year	24,739	48,938
Financing Receivable, Originated Four Years before Latest Fiscal Year	649	589
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	17,021	10,188
Total	167,124	170,971
Total commercial | Commercial and business lending | Nonaccrual Loan [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	9,508	3,926
Financing Receivable, Revolving	0	0
Financing Receivable, Originated in Current Fiscal Year	8	5,210
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	6,177	0
Financing Receivable, Originated Two Years before Latest Fiscal Year	9,500	9,119
Financing Receivable, Originated Three Years before Latest Fiscal Year	8,528	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	24,213	14,329
Total commercial | Commercial real estate — investor
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	0	38,412
Financing Receivable, Revolving	118,873	106,280
Financing Receivable, Originated in Current Fiscal Year	367,555	1,713,387
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	1,620,454	1,490,120
Financing Receivable, Originated Two Years before Latest Fiscal Year	1,445,246	718,117
Financing Receivable, Originated Three Years before Latest Fiscal Year	620,991	541,177
Financing Receivable, Originated Four Years before Latest Fiscal Year	490,042	281,875
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	431,088	229,387
Total	5,094,249	5,080,344
Total commercial | Commercial real estate — investor | Pass [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	0	38,412
Financing Receivable, Revolving	118,873	106,280
Financing Receivable, Originated in Current Fiscal Year	324,298	1,633,094
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	1,506,258	1,419,000
Financing Receivable, Originated Two Years before Latest Fiscal Year	1,375,935	683,121
Financing Receivable, Originated Three Years before Latest Fiscal Year	612,765	530,444
Financing Receivable, Originated Four Years before Latest Fiscal Year	489,024	262,858
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	411,246	210,299
Total	4,838,398	4,845,096
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	18,454	61,968
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	92,149	24,149
Financing Receivable, Originated Two Years before Latest Fiscal Year	22,247	7,361
Financing Receivable, Originated Three Years before Latest Fiscal Year	8,225	9,400
Financing Receivable, Originated Four Years before Latest Fiscal Year	0	0
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	0	10,455
Total	141,075	113,333
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	24,803	16,147
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	22,047	21,303
Financing Receivable, Originated Two Years before Latest Fiscal Year	22,209	27,635
Financing Receivable, Originated Three Years before Latest Fiscal Year	0	1,333
Financing Receivable, Originated Four Years before Latest Fiscal Year	1,019	19,017
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	19,575	7,099
Total	89,653	92,535
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	0	2,177
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	0	25,668
Financing Receivable, Originated Two Years before Latest Fiscal Year	24,855	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	267	1,535
Total	25,122	29,380
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	29,616	29,892
Financing Receivable, Originated in Current Fiscal Year	34,604	900,593
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	1,025,918	913,107
Financing Receivable, Originated Two Years before Latest Fiscal Year	812,505	254,374
Financing Receivable, Originated Three Years before Latest Fiscal Year	210,030	45,149
Financing Receivable, Originated Four Years before Latest Fiscal Year	23,160	2,226
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	11,237	9,880
Total	2,147,070	2,155,222
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	29,616	29,892
Financing Receivable, Originated in Current Fiscal Year	34,604	900,593
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	1,025,918	913,107
Financing Receivable, Originated Two Years before Latest Fiscal Year	812,505	241,230
Financing Receivable, Originated Three Years before Latest Fiscal Year	197,722	12,062
Financing Receivable, Originated Four Years before Latest Fiscal Year	7,510	2,226
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	11,059	9,775
Total	2,118,934	2,108,885
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	0
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	0	0
Financing Receivable, Originated Two Years before Latest Fiscal Year	0	12,174
Financing Receivable, Originated Three Years before Latest Fiscal Year	12,308	33,087
Financing Receivable, Originated Four Years before Latest Fiscal Year	15,651	0
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	0	0
Total	27,958	45,261
Total commercial | Real Estate Construction | Potential Problem [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		0
Financing Receivable, Originated Two Years before Latest Fiscal Year		970
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		970
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	178	105
Total	178	105
Total commercial | Commercial Real Estate
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	0	38,412
Financing Receivable, Revolving	148,489	136,173
Financing Receivable, Originated in Current Fiscal Year	402,159	2,613,980
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	2,646,372	2,403,227
Financing Receivable, Originated Two Years before Latest Fiscal Year	2,257,752	972,492
Financing Receivable, Originated Three Years before Latest Fiscal Year	831,020	586,326
Financing Receivable, Originated Four Years before Latest Fiscal Year	513,203	284,101
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	442,325	239,267
Total	7,241,318	7,235,565
Total commercial | Commercial Real Estate | Pass [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	0	38,412
Financing Receivable, Revolving	148,489	136,173
Financing Receivable, Originated in Current Fiscal Year	358,901	2,533,687
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	2,532,176	2,332,107
Financing Receivable, Originated Two Years before Latest Fiscal Year	2,188,440	924,351
Financing Receivable, Originated Three Years before Latest Fiscal Year	810,487	542,505
Financing Receivable, Originated Four Years before Latest Fiscal Year	496,533	265,083
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	422,305	220,073
Total	6,957,332	6,953,981
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	18,454	61,968
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	92,149	24,149
Financing Receivable, Originated Two Years before Latest Fiscal Year	22,247	19,535
Financing Receivable, Originated Three Years before Latest Fiscal Year	20,533	42,487
Financing Receivable, Originated Four Years before Latest Fiscal Year	15,651	0
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	0	10,455
Total	169,033	158,595
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	24,803	16,147
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	22,047	21,303
Financing Receivable, Originated Two Years before Latest Fiscal Year	22,209	28,605
Financing Receivable, Originated Three Years before Latest Fiscal Year	0	1,333
Financing Receivable, Originated Four Years before Latest Fiscal Year	1,019	19,017
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	19,575	7,099
Total	89,653	93,505
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	0	2,177
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	0	25,668
Financing Receivable, Originated Two Years before Latest Fiscal Year	24,855	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	445	1,640
Total	25,300	29,485
Total consumer
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	2,683	9,038
Financing Receivable, Revolving	686,781	708,817
Financing Receivable, Originated in Current Fiscal Year	326,858	2,732,080
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	2,747,101	2,306,769
Financing Receivable, Originated Two Years before Latest Fiscal Year	2,336,046	1,728,037
Financing Receivable, Originated Three Years before Latest Fiscal Year	1,700,946	830,759
Financing Receivable, Originated Four Years before Latest Fiscal Year	811,054	383,731
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	2,436,951	2,122,635
Total	11,045,737	10,812,828
Financing Receivable, Allowance for Credit Loss, Writeoff, by Origination Year [Abstract]
Financing Receivable, Revolving, Writeoff	916
Financing Receivable, Year One, Originated, Current Fiscal Year, Writeoff	0
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year, Writeoff	1,189
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year, Writeoff	263
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year, Writeoff	17
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year, Writeoff	29
Financing Receivable, Originated, More than Five Years before Current Fiscal Year, Writeoff	112
Charge offs	(2,525)
Total consumer | Pass [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	2,263	7,318
Financing Receivable, Revolving	685,974	708,154
Financing Receivable, Originated in Current Fiscal Year	326,429	2,720,589
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	2,735,869	2,301,991
Financing Receivable, Originated Two Years before Latest Fiscal Year	2,330,657	1,721,576
Financing Receivable, Originated Three Years before Latest Fiscal Year	1,692,318	825,866
Financing Receivable, Originated Four Years before Latest Fiscal Year	805,806	378,310
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	2,395,676	2,083,904
Total	10,972,729	10,740,390
Total consumer | Special Mention [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	19	52
Financing Receivable, Revolving	742	592
Financing Receivable, Originated in Current Fiscal Year	91	1,063
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	1,181	403
Financing Receivable, Originated Two Years before Latest Fiscal Year	152	101
Financing Receivable, Originated Three Years before Latest Fiscal Year	98	5
Financing Receivable, Originated Four Years before Latest Fiscal Year	39	47
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	722	398
Total	3,024	2,609
Total consumer | Potential Problem [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	14	0
Financing Receivable, Revolving	0	15
Financing Receivable, Originated in Current Fiscal Year	59	455
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	413	71
Financing Receivable, Originated Two Years before Latest Fiscal Year	548	0
Financing Receivable, Originated Three Years before Latest Fiscal Year	0	772
Financing Receivable, Originated Four Years before Latest Fiscal Year	585	31
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	323	831
Total	1,928	2,175
Total consumer | Nonaccrual Loan [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	388	1,668
Financing Receivable, Revolving	65	56
Financing Receivable, Originated in Current Fiscal Year	279	9,973
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	9,639	4,304
Financing Receivable, Originated Two Years before Latest Fiscal Year	4,688	6,360
Financing Receivable, Originated Three Years before Latest Fiscal Year	8,530	4,116
Financing Receivable, Originated Four Years before Latest Fiscal Year	4,624	5,343
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	40,231	37,501
Total	68,056	67,654
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	85,616	1,419,527
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	1,498,448	2,188,332
Financing Receivable, Originated Two Years before Latest Fiscal Year	2,226,164	1,722,979
Financing Receivable, Originated Three Years before Latest Fiscal Year	1,696,342	821,645
Financing Receivable, Originated Four Years before Latest Fiscal Year	803,113	375,768
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	2,295,481	1,983,299
Total	8,605,164	8,511,550
Financing Receivable, Allowance for Credit Loss, Writeoff, by Origination Year [Abstract]
Financing Receivable, Revolving, Writeoff	0
Financing Receivable, Year One, Originated, Current Fiscal Year, Writeoff	0
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year, Writeoff	107
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year, Writeoff	19
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year, Writeoff	8
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year, Writeoff	2
Financing Receivable, Originated, More than Five Years before Current Fiscal Year, Writeoff	32
Charge offs	(168)
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	85,201	1,410,566
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	1,490,848	2,184,125
Financing Receivable, Originated Two Years before Latest Fiscal Year	2,221,515	1,716,663
Financing Receivable, Originated Three Years before Latest Fiscal Year	1,687,853	817,164
Financing Receivable, Originated Four Years before Latest Fiscal Year	798,205	370,724
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	2,261,293	1,951,406
Total	8,544,915	8,450,648
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	91	0
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	0	284
Financing Receivable, Originated Two Years before Latest Fiscal Year	0	96
Financing Receivable, Originated Three Years before Latest Fiscal Year	95	0
Financing Receivable, Originated Four Years before Latest Fiscal Year	0	0
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	105	63
Total	291	444
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	45	455
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	216	71
Financing Receivable, Originated Two Years before Latest Fiscal Year	548	0
Financing Receivable, Originated Three Years before Latest Fiscal Year	0	738
Financing Receivable, Originated Four Years before Latest Fiscal Year	551	29
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	323	685
Total	1,684	1,978
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	279	8,506
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	7,384	3,851
Financing Receivable, Originated Two Years before Latest Fiscal Year	4,101	6,219
Financing Receivable, Originated Three Years before Latest Fiscal Year	8,394	3,744
Financing Receivable, Originated Four Years before Latest Fiscal Year	4,356	5,014
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	33,760	31,145
Total	58,274	58,480
Total consumer | Auto finance
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	239,138	1,273,406
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	1,211,778	106,551
Financing Receivable, Originated Two Years before Latest Fiscal Year	98,906	333
Financing Receivable, Originated Three Years before Latest Fiscal Year	299	1,276
Financing Receivable, Originated Four Years before Latest Fiscal Year	1,029	446
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	388	61
Total	1,551,538	1,382,073
Financing Receivable, Allowance for Credit Loss, Writeoff, by Origination Year [Abstract]
Financing Receivable, Revolving, Writeoff	0
Financing Receivable, Year One, Originated, Current Fiscal Year, Writeoff	0
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year, Writeoff	922
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year, Writeoff	181
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year, Writeoff	0
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year, Writeoff	0
Financing Receivable, Originated, More than Five Years before Current Fiscal Year, Writeoff	0
Charge offs	(1,103)
Total consumer | Auto finance | 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	239,138	1,271,205
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	1,208,658	106,102
Financing Receivable, Originated Two Years before Latest Fiscal Year	98,290	333
Financing Receivable, Originated Three Years before Latest Fiscal Year	299	1,267
Financing Receivable, Originated Four Years before Latest Fiscal Year	1,020	446
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	388	61
Total	1,547,793	1,379,414
Total consumer | Auto finance | 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	1,052
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	1,168	118
Financing Receivable, Originated Two Years before Latest Fiscal Year	141	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	1,310	1,170
Total consumer | Auto finance | 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	1,149
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	1,952	331
Financing Receivable, Originated Two Years before Latest Fiscal Year	474	0
Financing Receivable, Originated Three Years before Latest Fiscal Year	0	9
Financing Receivable, Originated Four Years before Latest Fiscal Year	9	0
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	0	0
Total	2,436	1,490
Total consumer | Home equity
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	2,592	8,891
Financing Receivable, Revolving	495,900	508,329
Financing Receivable, Originated in Current Fiscal Year	244	31,695
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	31,583	6,610
Financing Receivable, Originated Two Years before Latest Fiscal Year	6,941	2,243
Financing Receivable, Originated Three Years before Latest Fiscal Year	2,374	6,538
Financing Receivable, Originated Four Years before Latest Fiscal Year	6,047	7,333
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	66,698	61,605
Total	609,787	624,353
Financing Receivable, Allowance for Credit Loss, Writeoff, by Origination Year [Abstract]
Financing Receivable, Revolving, Writeoff	0
Financing Receivable, Year One, Originated, Current Fiscal Year, Writeoff	0
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year, Writeoff	43
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year, Writeoff	14
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year, Writeoff	0
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year, Writeoff	22
Financing Receivable, Originated, More than Five Years before Current Fiscal Year, Writeoff	33
Charge offs	(111)
Total consumer | Home equity | Pass [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	2,173	7,254
Financing Receivable, Revolving	495,755	508,212
Financing Receivable, Originated in Current Fiscal Year	230	31,389
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	31,083	6,508
Financing Receivable, Originated Two Years before Latest Fiscal Year	6,835	2,112
Financing Receivable, Originated Three Years before Latest Fiscal Year	2,243	6,197
Financing Receivable, Originated Four Years before Latest Fiscal Year	5,732	6,966
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	59,670	54,827
Total	601,549	616,211
Total consumer | Home equity | Special Mention [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	18	47
Financing Receivable, Revolving	124	102
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	29	47
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	594	310
Total	747	458
Total consumer | Home equity | Potential Problem [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	14	0
Financing Receivable, Revolving	0	15
Financing Receivable, Originated in Current Fiscal Year	14	0
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	196	0
Financing Receivable, Originated Two Years before Latest Fiscal Year	0	0
Financing Receivable, Originated Three Years before Latest Fiscal Year	0	34
Financing Receivable, Originated Four Years before Latest Fiscal Year	34	2
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	0	146
Total	244	197
Total consumer | Home equity | Nonaccrual Loan [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	388	1,590
Financing Receivable, Revolving	20	0
Financing Receivable, Originated in Current Fiscal Year	0	306
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	303	102
Financing Receivable, Originated Two Years before Latest Fiscal Year	106	131
Financing Receivable, Originated Three Years before Latest Fiscal Year	131	307
Financing Receivable, Originated Four Years before Latest Fiscal Year	252	319
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	6,434	6,322
Total	7,246	7,487
Total consumer | Other consumer
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	91	147
Financing Receivable, Revolving	190,881	200,488
Financing Receivable, Originated in Current Fiscal Year	1,860	7,452
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	5,292	5,276
Financing Receivable, Originated Two Years before Latest Fiscal Year	4,035	2,482
Financing Receivable, Originated Three Years before Latest Fiscal Year	1,930	1,300
Financing Receivable, Originated Four Years before Latest Fiscal Year	866	184
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	74,384	77,670
Total	279,248	294,851
Financing Receivable, Allowance for Credit Loss, Writeoff, by Origination Year [Abstract]
Financing Receivable, Revolving, Writeoff	916
Financing Receivable, Year One, Originated, Current Fiscal Year, Writeoff	0
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year, Writeoff	117
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year, Writeoff	49
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year, Writeoff	9
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year, Writeoff	5
Financing Receivable, Originated, More than Five Years before Current Fiscal Year, Writeoff	48
Charge offs	(1,144)
Total consumer | Other consumer | Pass [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	90	64
Financing Receivable, Revolving	190,219	199,942
Financing Receivable, Originated in Current Fiscal Year	1,860	7,429
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	5,279	5,256
Financing Receivable, Originated Two Years before Latest Fiscal Year	4,017	2,468
Financing Receivable, Originated Three Years before Latest Fiscal Year	1,922	1,238
Financing Receivable, Originated Four Years before Latest Fiscal Year	849	174
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	74,324	77,611
Total	278,471	294,117
Total consumer | Other consumer | Special Mention [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	1	6
Financing Receivable, Revolving	617	490
Financing Receivable, Originated in Current Fiscal Year	0	11
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	13	0
Financing Receivable, Originated Two Years before Latest Fiscal Year	11	5
Financing Receivable, Originated Three Years before Latest Fiscal Year	3	5
Financing Receivable, Originated Four Years before Latest Fiscal Year	10	0
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	23	25
Total	676	537
Total consumer | Other consumer | Nonaccrual Loan [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	0	78
Financing Receivable, Revolving	44	56
Financing Receivable, Originated in Current Fiscal Year	0	11
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	0	21
Financing Receivable, Originated Two Years before Latest Fiscal Year	7	10
Financing Receivable, Originated Three Years before Latest Fiscal Year	6	56
Financing Receivable, Originated Four Years before Latest Fiscal Year	6	10
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	36	34
Total	$ 100	$ 197

Loans Past Due Status (Details)

Loans Past Due Status (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2023	Dec. 31, 2022
Summarized details of Loans
Current	$ 29,058,504	$ 28,652,257
Financing Receivable, Nonaccrual	117,569	111,467
Loans and Leases Receivable, Net of Deferred Income, Total	29,207,072	28,799,569
Nonaccrual Loans, Current Portion	$ 78,000	$ 64,000
Percent of current nonaccrual loans	66%	58%
Financing Receivable, Nonaccrual, Interest Income	$ 0	$ 0
Financing Receivable, Nonaccrual, No Allowance	15,000	11,000
30-59 Days Past Due
Summarized details of Loans
Total Past Due	26,167	26,256
60-89 Days Past Due
Summarized details of Loans
Total Past Due	3,130	7,861
Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
Summarized details of Loans
Total Past Due	1,703	1,728
Asset-based lending & equipment finance
Summarized details of Loans
Current	522,834	458,887
Financing Receivable, Nonaccrual	0	0
Loans and Leases Receivable, Net of Deferred Income, Total	522,834	458,887
Asset-based lending & equipment finance | 30-59 Days Past Due
Summarized details of Loans
Total Past Due	0	0
Asset-based lending & equipment finance | 60-89 Days Past Due
Summarized details of Loans
Total Past Due	0	0
Asset-based lending & equipment finance | Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
Summarized details of Loans
Total Past Due	0	0
Commercial and Industrial Sector
Summarized details of Loans
Current	9,319,650	9,279,674
Financing Receivable, Nonaccrual	22,735	14,329
Loans and Leases Receivable, Net of Deferred Income, Total	9,346,947	9,300,567
Commercial and Industrial Sector | 30-59 Days Past Due
Summarized details of Loans
Total Past Due	4,110	716
Commercial and Industrial Sector | 60-89 Days Past Due
Summarized details of Loans
Total Past Due	130	5,566
Commercial and Industrial Sector | Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
Summarized details of Loans
Total Past Due	323	282
Commercial real estate — owner occupied
Summarized details of Loans
Current	1,045,803	991,493
Financing Receivable, Nonaccrual	1,478	0
Loans and Leases Receivable, Net of Deferred Income, Total	1,050,236	991,722
Commercial real estate — owner occupied | 30-59 Days Past Due
Summarized details of Loans
Total Past Due	2,955	218
Commercial real estate — owner occupied | 60-89 Days Past Due
Summarized details of Loans
Total Past Due	0	12
Commercial real estate — owner occupied | Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
Summarized details of Loans
Total Past Due	0	0
Commercial and business lending
Summarized details of Loans
Current	10,888,287	10,730,053
Financing Receivable, Nonaccrual	24,213	14,329
Loans and Leases Receivable, Net of Deferred Income, Total	10,920,017	10,751,176
Commercial and business lending | 30-59 Days Past Due
Summarized details of Loans
Total Past Due	7,065	934
Commercial and business lending | 60-89 Days Past Due
Summarized details of Loans
Total Past Due	130	5,578
Commercial and business lending | Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
Summarized details of Loans
Total Past Due	323	282
Commercial real estate — investor
Summarized details of Loans
Current	5,069,126	5,049,897
Financing Receivable, Nonaccrual	25,122	29,380
Loans and Leases Receivable, Net of Deferred Income, Total	5,094,249	5,080,344
Commercial real estate — investor | 30-59 Days Past Due
Summarized details of Loans
Total Past Due	0	1,067
Commercial real estate — investor | 60-89 Days Past Due
Summarized details of Loans
Total Past Due	0	0
Commercial real estate — investor | Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
Summarized details of Loans
Total Past Due	0	0
Real estate construction
Summarized details of Loans
Current	2,146,892	2,155,077
Financing Receivable, Nonaccrual	178	105
Loans and Leases Receivable, Net of Deferred Income, Total	2,147,070	2,155,222
Real estate construction | 30-59 Days Past Due
Summarized details of Loans
Total Past Due	0	39
Real estate construction | 60-89 Days Past Due
Summarized details of Loans
Total Past Due	0	0
Real estate construction | Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
Summarized details of Loans
Total Past Due	0	0
Commercial real estate lending
Summarized details of Loans
Current	7,216,018	7,204,975
Financing Receivable, Nonaccrual	25,300	29,485
Loans and Leases Receivable, Net of Deferred Income, Total	7,241,318	7,235,565
Commercial real estate lending | 30-59 Days Past Due
Summarized details of Loans
Total Past Due	0	1,105
Commercial real estate lending | 60-89 Days Past Due
Summarized details of Loans
Total Past Due	0	0
Commercial real estate lending | Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
Summarized details of Loans
Total Past Due	0	0
Total commercial
Summarized details of Loans
Current	18,104,305	17,935,028
Financing Receivable, Nonaccrual	49,513	43,814
Loans and Leases Receivable, Net of Deferred Income, Total	18,161,335	17,986,742
Total commercial | 30-59 Days Past Due
Summarized details of Loans
Total Past Due	7,065	2,040
Total commercial | 60-89 Days Past Due
Summarized details of Loans
Total Past Due	130	5,578
Total commercial | Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
Summarized details of Loans
Total Past Due	323	282
Residential mortgage
Summarized details of Loans
Current	8,539,264	8,443,072
Financing Receivable, Nonaccrual	58,274	58,480
Loans and Leases Receivable, Net of Deferred Income, Total	8,605,164	8,511,550
Residential mortgage | 30-59 Days Past Due
Summarized details of Loans
Total Past Due	7,430	9,811
Residential mortgage | 60-89 Days Past Due
Summarized details of Loans
Total Past Due	196	63
Residential mortgage | Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
Summarized details of Loans
Total Past Due	0	124
Auto finance
Summarized details of Loans
Current	1,540,463	1,371,176
Financing Receivable, Nonaccrual	2,436	1,490
Loans and Leases Receivable, Net of Deferred Income, Total	1,551,538	1,382,073
Auto finance | 30-59 Days Past Due
Summarized details of Loans
Total Past Due	7,330	8,238
Auto finance | 60-89 Days Past Due
Summarized details of Loans
Total Past Due	1,310	1,170
Auto finance | Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
Summarized details of Loans
Total Past Due	0	0
Home equity
Summarized details of Loans
Current	598,427	611,259
Financing Receivable, Nonaccrual	7,246	7,487
Loans and Leases Receivable, Net of Deferred Income, Total	609,787	624,353
Home equity | 30-59 Days Past Due
Summarized details of Loans
Total Past Due	3,366	5,149
Home equity | 60-89 Days Past Due
Summarized details of Loans
Total Past Due	747	458
Home equity | Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
Summarized details of Loans
Total Past Due	0	0
Other consumer
Summarized details of Loans
Current	276,045	291,722
Financing Receivable, Nonaccrual	100	197
Loans and Leases Receivable, Net of Deferred Income, Total	279,248	294,851
Other consumer | 30-59 Days Past Due
Summarized details of Loans
Total Past Due	976	1,018
Other consumer | 60-89 Days Past Due
Summarized details of Loans
Total Past Due	747	592
Other consumer | Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
Summarized details of Loans
Total Past Due	1,380	1,322
Total consumer
Summarized details of Loans
Current	10,954,199	10,717,229
Financing Receivable, Nonaccrual	68,056	67,654
Loans and Leases Receivable, Net of Deferred Income, Total	11,045,737	10,812,828
Total consumer | 30-59 Days Past Due
Summarized details of Loans
Total Past Due	19,102	24,216
Total consumer | 60-89 Days Past Due
Summarized details of Loans
Total Past Due	3,000	2,283
Total consumer | Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
Summarized details of Loans
Total Past Due	$ 1,380	$ 1,446

Loans, Modifications (Details)

Loans, Modifications (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2023 USD ($)
Financing Receivable, Modified [Line Items]
Financing Receivable, Modified, Weighted Average Interest Rate, Range, From	22%
Financing Receivable, Modified, Weighted Average Interest Rate, Range, To	5%
Financing Receivable, Modified, Weighted Average Term, Range, From	334 months
Financing Receivable, Modified, Weighted Average Term, Range, To	360 months
Interest Rate Below Market Reduction [Member]
Financing Receivable, Modified [Line Items]
Financing Receivable, Modified in Period, Amount	$ 637
Financing Receivable, Modified, Weighted Average Interest Rate Decrease from Modification	(17.00%)
Extended Maturity [Member]
Financing Receivable, Modified [Line Items]
Financing Receivable, Modified in Period, Amount	$ 209
Financing Receivable, Modified, Weighted Average Term Increase from Modification	26 months
Extended Maturity and Interest Rate Reduction [Member]
Financing Receivable, Modified [Line Items]
Financing Receivable, Modified in Period, Amount	$ 258
Commercial and Industrial Sector | Interest Rate Below Market Reduction [Member]
Financing Receivable, Modified [Line Items]
Financing Receivable, Modified in Period, Amount	$ 47
Financing Receivable, Modified, Weighted Average Interest Rate Decrease from Modification	(16.00%)
Residential mortgage | Extended Maturity [Member]
Financing Receivable, Modified [Line Items]
Financing Receivable, Modified in Period, Amount	$ 209
Financing Receivable, Modified, Weighted Average Term Increase from Modification	26 months
Residential mortgage | Extended Maturity and Interest Rate Reduction [Member]
Financing Receivable, Modified [Line Items]
Financing Receivable, Modified in Period, Amount	$ 165
Auto finance | Interest Rate Below Market Reduction [Member]
Financing Receivable, Modified [Line Items]
Financing Receivable, Modified in Period, Amount	$ 61
Financing Receivable, Modified, Weighted Average Interest Rate Decrease from Modification	(2.00%)
Home equity | Interest Rate Below Market Reduction [Member]
Financing Receivable, Modified [Line Items]
Financing Receivable, Modified in Period, Amount	$ 31
Financing Receivable, Modified, Weighted Average Interest Rate Decrease from Modification	1%
Home equity | Extended Maturity and Interest Rate Reduction [Member]
Financing Receivable, Modified [Line Items]
Financing Receivable, Modified in Period, Amount	$ 93
Other consumer | Interest Rate Below Market Reduction [Member]
Financing Receivable, Modified [Line Items]
Financing Receivable, Modified in Period, Amount	$ 498
Financing Receivable, Modified, Weighted Average Interest Rate Decrease from Modification	(20.00%)

Loans, Modifications in Last 12

Loans, Modifications in Last 12 Months, Performance $ in Thousands	3 Months Ended
	Mar. 31, 2023 USD ($)
Financial Asset, Not Past Due [Member]
Financing Receivable, Modified in the Last 12 Months, Performance [Line Items]
Financing Receivable, Modified in Period, Amount	$ 763
Financial Asset, 30-89 Days Past Due [Member]
Financing Receivable, Modified in the Last 12 Months, Performance [Line Items]
Financing Receivable, Modified in Period, Amount	0
Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
Financing Receivable, Modified in the Last 12 Months, Performance [Line Items]
Financing Receivable, Modified in Period, Amount	0
Financial Asset, Nonaccrual [Member]
Financing Receivable, Modified in the Last 12 Months, Performance [Line Items]
Financing Receivable, Modified in Period, Amount	341
Commercial and Industrial Sector | Financial Asset, Not Past Due [Member]
Financing Receivable, Modified in the Last 12 Months, Performance [Line Items]
Financing Receivable, Modified in Period, Amount	47
Commercial and Industrial Sector | Financial Asset, 30-89 Days Past Due [Member]
Financing Receivable, Modified in the Last 12 Months, Performance [Line Items]
Financing Receivable, Modified in Period, Amount	0
Commercial and Industrial Sector | Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
Financing Receivable, Modified in the Last 12 Months, Performance [Line Items]
Financing Receivable, Modified in Period, Amount	0
Commercial and Industrial Sector | Financial Asset, Nonaccrual [Member]
Financing Receivable, Modified in the Last 12 Months, Performance [Line Items]
Financing Receivable, Modified in Period, Amount	0
Residential mortgage | Financial Asset, Not Past Due [Member]
Financing Receivable, Modified in the Last 12 Months, Performance [Line Items]
Financing Receivable, Modified in Period, Amount	126
Residential mortgage | Financial Asset, 30-89 Days Past Due [Member]
Financing Receivable, Modified in the Last 12 Months, Performance [Line Items]
Financing Receivable, Modified in Period, Amount	0
Residential mortgage | Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
Financing Receivable, Modified in the Last 12 Months, Performance [Line Items]
Financing Receivable, Modified in Period, Amount	0
Residential mortgage | Financial Asset, Nonaccrual [Member]
Financing Receivable, Modified in the Last 12 Months, Performance [Line Items]
Financing Receivable, Modified in Period, Amount	248
Auto finance | Financial Asset, Not Past Due [Member]
Financing Receivable, Modified in the Last 12 Months, Performance [Line Items]
Financing Receivable, Modified in Period, Amount	61
Auto finance | Financial Asset, 30-89 Days Past Due [Member]
Financing Receivable, Modified in the Last 12 Months, Performance [Line Items]
Financing Receivable, Modified in Period, Amount	0
Auto finance | Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
Financing Receivable, Modified in the Last 12 Months, Performance [Line Items]
Financing Receivable, Modified in Period, Amount	0
Auto finance | Financial Asset, Nonaccrual [Member]
Financing Receivable, Modified in the Last 12 Months, Performance [Line Items]
Financing Receivable, Modified in Period, Amount	0
Home equity | Financial Asset, Not Past Due [Member]
Financing Receivable, Modified in the Last 12 Months, Performance [Line Items]
Financing Receivable, Modified in Period, Amount	31
Home equity | Financial Asset, 30-89 Days Past Due [Member]
Financing Receivable, Modified in the Last 12 Months, Performance [Line Items]
Financing Receivable, Modified in Period, Amount	0
Home equity | Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
Financing Receivable, Modified in the Last 12 Months, Performance [Line Items]
Financing Receivable, Modified in Period, Amount	0
Home equity | Financial Asset, Nonaccrual [Member]
Financing Receivable, Modified in the Last 12 Months, Performance [Line Items]
Financing Receivable, Modified in Period, Amount	93
Other consumer | Financial Asset, Not Past Due [Member]
Financing Receivable, Modified in the Last 12 Months, Performance [Line Items]
Financing Receivable, Modified in Period, Amount	498
Other consumer | Financial Asset, 30-89 Days Past Due [Member]
Financing Receivable, Modified in the Last 12 Months, Performance [Line Items]
Financing Receivable, Modified in Period, Amount	0
Other consumer | Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
Financing Receivable, Modified in the Last 12 Months, Performance [Line Items]
Financing Receivable, Modified in Period, Amount	0
Other consumer | Financial Asset, Nonaccrual [Member]
Financing Receivable, Modified in the Last 12 Months, Performance [Line Items]
Financing Receivable, Modified in Period, Amount	$ 0

Loans, Modified, Subsequent Def

Loans, Modified, Subsequent Default (Details) - Home equity $ in Thousands	3 Months Ended
	Mar. 31, 2023 USD ($)
Interest Rate Below Market Reduction [Member]
Financing Receivable, Modified, Subsequent Default [Line Items]
Financing Receivable, Modified, Subsequent Default	$ 0
Extended Maturity [Member]
Financing Receivable, Modified, Subsequent Default [Line Items]
Financing Receivable, Modified, Subsequent Default	0
Extended Maturity and Interest Rate Reduction [Member]
Financing Receivable, Modified, Subsequent Default [Line Items]
Financing Receivable, Modified, Subsequent Default	$ 60

Loans, Troubled Debt Restructur

Loans, Troubled Debt Restructurings Performing and Nonaccrual (Details) $ in Thousands	Dec. 31, 2022 USD ($)
Financing Receivable, Impaired [Line Items]
Performing Restructured Loans	$ 32,868
Nonaccrual Restructured Loans(a)	20,127
Commercial and Industrial Sector
Financing Receivable, Impaired [Line Items]
Performing Restructured Loans	12,453
Nonaccrual Restructured Loans(a)	0
Commercial real estate — owner occupied
Financing Receivable, Impaired [Line Items]
Performing Restructured Loans	316
Nonaccrual Restructured Loans(a)	0
Commercial real estate — investor
Financing Receivable, Impaired [Line Items]
Performing Restructured Loans	128
Nonaccrual Restructured Loans(a)	2,074
Real estate construction
Financing Receivable, Impaired [Line Items]
Performing Restructured Loans	195
Nonaccrual Restructured Loans(a)	9
Residential mortgage
Financing Receivable, Impaired [Line Items]
Performing Restructured Loans	16,829
Nonaccrual Restructured Loans(a)	17,117
Home equity
Financing Receivable, Impaired [Line Items]
Performing Restructured Loans	2,148
Nonaccrual Restructured Loans(a)	927
Other consumer
Financing Receivable, Impaired [Line Items]
Performing Restructured Loans	798
Nonaccrual Restructured Loans(a)	$ 0

Loans, Troubled Debt Restruct_2

Loans, Troubled Debt Restructurings, Summary (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2022 USD ($) loan
Financing Receivable, Troubled Debt Restructuring [Line Items]
Financing Receivable, Modifications, Number of Contracts | loan	27
Financing Receivable, Troubled Debt Restructuring, Postmodification	$ 6,500
Financing Receivable, Troubled Debt Restructuring, Premodification	$ 6,603
Residential mortgage
Financing Receivable, Troubled Debt Restructuring [Line Items]
Financing Receivable, Modifications, Number of Contracts | loan	24
Financing Receivable, Troubled Debt Restructuring, Postmodification	$ 6,421
Financing Receivable, Troubled Debt Restructuring, Premodification	$ 6,502
Home equity
Financing Receivable, Troubled Debt Restructuring [Line Items]
Financing Receivable, Modifications, Number of Contracts | loan	3
Financing Receivable, Troubled Debt Restructuring, Postmodification	$ 80
Financing Receivable, Troubled Debt Restructuring, Premodification	$ 101

Loans, Troubled Debt Restruct_3

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

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, 2023	Mar. 31, 2022	Dec. 31, 2022
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Charge offs	$ (5,501)
Off-Balance Sheet, Credit Loss, Liability [Roll Forward]
Off-Balance-Sheet, Credit Loss, Liability, Beginning Balance	38,776	$ 39,776	$ 39,776
Provision for credit losses	1,000		(1,000)
Off-Balance-Sheet, Credit Loss, Liability, Ending Balance	39,776		38,776
Allowance for credit losses on loans
Charge offs	(5,501)
Provision for credit losses	17,971	(3,990)
Allowance for Loan Losses [Member]
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Financing Receivable, Allowance for Credit Loss, Beginning Balance	312,720	280,015	280,015
Charge offs	(5,501)		(10,146)
Recoveries	2,212		8,852
Net Charge offs	(3,289)		(1,294)
Provision for credit losses	17,000		34,000
Financing Receivable, Allowance for Credit Loss, Ending Balance	326,432		312,720
Allowance for credit losses on loans
Charge offs	(5,501)		(10,146)
Recoveries	2,212		8,852
Net Charge offs	(3,289)		(1,294)
Allowance for Loan Losses [Member] | Asset-based lending & equipment finance
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Financing Receivable, Allowance for Credit Loss, Beginning Balance	6,564	4,182	4,182
Charge offs	0		0
Recoveries	0		0
Net Charge offs	0		0
Provision for credit losses	2		2,382
Financing Receivable, Allowance for Credit Loss, Ending Balance	6,566		6,564
Allowance for credit losses on loans
Charge offs	0		0
Recoveries	0		0
Net Charge offs	0		0
Allowance for Loan Losses [Member] | Commercial and industrial
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Financing Receivable, Allowance for Credit Loss, Beginning Balance	112,512	85,675	85,675
Charge offs	(2,975)		(4,491)
Recoveries	1,216		5,282
Net Charge offs	(1,759)		791
Provision for credit losses	6,930		26,047
Financing Receivable, Allowance for Credit Loss, Ending Balance	117,683		112,512
Allowance for credit losses on loans
Charge offs	(2,975)		(4,491)
Recoveries	1,216		5,282
Net Charge offs	(1,759)		791
Allowance for Loan Losses [Member] | Commercial real estate — owner occupied
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Financing Receivable, Allowance for Credit Loss, Beginning Balance	9,475	11,473	11,473
Charge offs	0		0
Recoveries	3		13
Net Charge offs	3		13
Provision for credit losses	785		(2,011)
Financing Receivable, Allowance for Credit Loss, Ending Balance	10,263		9,475
Allowance for credit losses on loans
Charge offs	0		0
Recoveries	3		13
Net Charge offs	3		13
Allowance for Loan Losses [Member] | Commercial and business lending
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Financing Receivable, Allowance for Credit Loss, Beginning Balance	128,551	101,330	101,330
Charge offs	(2,975)		(4,491)
Recoveries	1,219		5,295
Net Charge offs	(1,756)		804
Provision for credit losses	7,717		26,418
Financing Receivable, Allowance for Credit Loss, Ending Balance	134,512		128,551
Allowance for credit losses on loans
Charge offs	(2,975)		(4,491)
Recoveries	1,219		5,295
Net Charge offs	(1,756)		804
Allowance for Loan Losses [Member] | Commercial real estate — investor
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Financing Receivable, Allowance for Credit Loss, Beginning Balance	54,398	72,803	72,803
Charge offs	0		(50)
Recoveries	0		50
Net Charge offs	0		0
Provision for credit losses	412		(18,405)
Financing Receivable, Allowance for Credit Loss, Ending Balance	54,809		54,398
Allowance for credit losses on loans
Charge offs	0		(50)
Recoveries	0		50
Net Charge offs	0		0
Allowance for Loan Losses [Member] | Real estate construction
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Financing Receivable, Allowance for Credit Loss, Beginning Balance	45,589	37,643	37,643
Charge offs	0		(48)
Recoveries	18		106
Net Charge offs	18		58
Provision for credit losses	3,946		7,887
Financing Receivable, Allowance for Credit Loss, Ending Balance	49,552		45,589
Allowance for credit losses on loans
Charge offs	0		(48)
Recoveries	18		106
Net Charge offs	18		58
Allowance for Loan Losses [Member] | Commercial real estate lending
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Financing Receivable, Allowance for Credit Loss, Beginning Balance	99,986	110,446	110,446
Charge offs	0		(98)
Recoveries	18		156
Net Charge offs	18		58
Provision for credit losses	4,357		(10,518)
Financing Receivable, Allowance for Credit Loss, Ending Balance	104,362		99,986
Allowance for credit losses on loans
Charge offs	0		(98)
Recoveries	18		156
Net Charge offs	18		58
Allowance for Loan Losses [Member] | Total commercial
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Financing Receivable, Allowance for Credit Loss, Beginning Balance	228,538	211,776	211,776
Charge offs	(2,975)		(4,588)
Recoveries	1,237		5,451
Net Charge offs	(1,738)		862
Provision for credit losses	12,075		15,900
Financing Receivable, Allowance for Credit Loss, Ending Balance	238,874		228,538
Allowance for credit losses on loans
Charge offs	(2,975)		(4,588)
Recoveries	1,237		5,451
Net Charge offs	(1,738)		862
Allowance for Loan Losses [Member] | Residential mortgage
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Financing Receivable, Allowance for Credit Loss, Beginning Balance	38,298	40,787	40,787
Charge offs	(168)		(567)
Recoveries	114		908
Net Charge offs	(53)		341
Provision for credit losses	851		(2,830)
Financing Receivable, Allowance for Credit Loss, Ending Balance	39,096		38,298
Allowance for credit losses on loans
Charge offs	(168)		(567)
Recoveries	114		908
Net Charge offs	(53)		341
Allowance for Loan Losses [Member] | Auto finance
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Financing Receivable, Allowance for Credit Loss, Beginning Balance	19,619	1,999	1,999
Charge offs	(1,103)		(1,041)
Recoveries	147		98
Net Charge offs	(957)		(943)
Provision for credit losses	3,531		18,563
Financing Receivable, Allowance for Credit Loss, Ending Balance	22,193		19,619
Allowance for credit losses on loans
Charge offs	(1,103)		(1,041)
Recoveries	147		98
Net Charge offs	(957)		(943)
Allowance for Loan Losses [Member] | Home equity
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Financing Receivable, Allowance for Credit Loss, Beginning Balance	14,875	14,011	14,011
Charge offs	(111)		(587)
Recoveries	451		1,385
Net Charge offs	340		798
Provision for credit losses	(442)		66
Financing Receivable, Allowance for Credit Loss, Ending Balance	14,774		14,875
Allowance for credit losses on loans
Charge offs	(111)		(587)
Recoveries	451		1,385
Net Charge offs	340		798
Allowance for Loan Losses [Member] | Other consumer
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Financing Receivable, Allowance for Credit Loss, Beginning Balance	11,390	11,441	11,441
Charge offs	(1,144)		(3,363)
Recoveries	263		1,010
Net Charge offs	(881)		(2,353)
Provision for credit losses	986		2,301
Financing Receivable, Allowance for Credit Loss, Ending Balance	11,495		11,390
Allowance for credit losses on loans
Charge offs	(1,144)		(3,363)
Recoveries	263		1,010
Net Charge offs	(881)		(2,353)
Allowance for Loan Losses [Member] | Total consumer
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Financing Receivable, Allowance for Credit Loss, Beginning Balance	84,182	68,239	68,239
Charge offs	(2,525)		(5,558)
Recoveries	975		3,401
Net Charge offs	(1,550)		(2,157)
Provision for credit losses	4,925		18,100
Financing Receivable, Allowance for Credit Loss, Ending Balance	87,557		84,182
Allowance for credit losses on loans
Charge offs	(2,525)		(5,558)
Recoveries	975		3,401
Net Charge offs	(1,550)		(2,157)
SEC Schedule, 12-09, Reserve, Off-balance Sheet Activity [Member]
Off-Balance Sheet, Credit Loss, Liability [Roll Forward]
Off-Balance-Sheet, Credit Loss, Liability, Beginning Balance	38,776	39,776	39,776
Provision for credit losses	1,000		(1,000)
Off-Balance-Sheet, Credit Loss, Liability, Ending Balance	39,776		38,776
SEC Schedule, 12-09, Reserve, Off-balance Sheet Activity [Member] | Asset-based lending & equipment finance
Off-Balance Sheet, Credit Loss, Liability [Roll Forward]
Off-Balance-Sheet, Credit Loss, Liability, Beginning Balance	601	857	857
Provision for credit losses	(103)		(256)
Off-Balance-Sheet, Credit Loss, Liability, Ending Balance	498		601
SEC Schedule, 12-09, Reserve, Off-balance Sheet Activity [Member] | Commercial and industrial
Off-Balance Sheet, Credit Loss, Liability [Roll Forward]
Off-Balance-Sheet, Credit Loss, Liability, Beginning Balance	12,396	17,601	17,601
Provision for credit losses	(123)		(5,205)
Off-Balance-Sheet, Credit Loss, Liability, Ending Balance	12,273		12,396
SEC Schedule, 12-09, Reserve, Off-balance Sheet Activity [Member] | Commercial real estate — owner occupied
Off-Balance Sheet, Credit Loss, Liability [Roll Forward]
Off-Balance-Sheet, Credit Loss, Liability, Beginning Balance	103	208	208
Provision for credit losses	146		(105)
Off-Balance-Sheet, Credit Loss, Liability, Ending Balance	249		103
SEC Schedule, 12-09, Reserve, Off-balance Sheet Activity [Member] | Commercial and business lending
Off-Balance Sheet, Credit Loss, Liability [Roll Forward]
Off-Balance-Sheet, Credit Loss, Liability, Beginning Balance	13,101	18,667	18,667
Provision for credit losses	(80)		(5,566)
Off-Balance-Sheet, Credit Loss, Liability, Ending Balance	13,020		13,101
SEC Schedule, 12-09, Reserve, Off-balance Sheet Activity [Member] | Commercial real estate — investor
Off-Balance Sheet, Credit Loss, Liability [Roll Forward]
Off-Balance-Sheet, Credit Loss, Liability, Beginning Balance	710	936	936
Provision for credit losses	159		(226)
Off-Balance-Sheet, Credit Loss, Liability, Ending Balance	868		710
SEC Schedule, 12-09, Reserve, Off-balance Sheet Activity [Member] | Real estate construction
Off-Balance Sheet, Credit Loss, Liability [Roll Forward]
Off-Balance-Sheet, Credit Loss, Liability, Beginning Balance	20,583	15,586	15,586
Provision for credit losses	963		4,997
Off-Balance-Sheet, Credit Loss, Liability, Ending Balance	21,546		20,583
SEC Schedule, 12-09, Reserve, Off-balance Sheet Activity [Member] | Commercial real estate lending
Off-Balance Sheet, Credit Loss, Liability [Roll Forward]
Off-Balance-Sheet, Credit Loss, Liability, Beginning Balance	21,292	16,522	16,522
Provision for credit losses	1,122		4,770
Off-Balance-Sheet, Credit Loss, Liability, Ending Balance	22,414		21,292
SEC Schedule, 12-09, Reserve, Off-balance Sheet Activity [Member] | Total commercial
Off-Balance Sheet, Credit Loss, Liability [Roll Forward]
Off-Balance-Sheet, Credit Loss, Liability, Beginning Balance	34,393	35,189	35,189
Provision for credit losses	1,041		(796)
Off-Balance-Sheet, Credit Loss, Liability, Ending Balance	35,435		34,393
SEC Schedule, 12-09, Reserve, Off-balance Sheet Activity [Member] | Home equity
Off-Balance Sheet, Credit Loss, Liability [Roll Forward]
Off-Balance-Sheet, Credit Loss, Liability, Beginning Balance	2,699	2,592	2,592
Provision for credit losses	(8)		107
Off-Balance-Sheet, Credit Loss, Liability, Ending Balance	2,691		2,699
SEC Schedule, 12-09, Reserve, Off-balance Sheet Activity [Member] | Other consumer
Off-Balance Sheet, Credit Loss, Liability [Roll Forward]
Off-Balance-Sheet, Credit Loss, Liability, Beginning Balance	1,683	1,995	1,995
Provision for credit losses	(34)		(311)
Off-Balance-Sheet, Credit Loss, Liability, Ending Balance	1,650		1,683
SEC Schedule, 12-09, Reserve, Off-balance Sheet Activity [Member] | Total consumer
Off-Balance Sheet, Credit Loss, Liability [Roll Forward]
Off-Balance-Sheet, Credit Loss, Liability, Beginning Balance	4,382	4,587	4,587
Provision for credit losses	(41)		(204)
Off-Balance-Sheet, Credit Loss, Liability, Ending Balance	4,341		4,382
Allowance for Loans Losses and Unfunded Commitments [Member]
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Charge offs	(5,501)		(10,146)
Recoveries	2,212		8,852
Net Charge offs	(3,289)		(1,294)
Allowance for credit losses on loans
Balance at beginning of period	351,496	319,791	319,791
Charge offs	(5,501)		(10,146)
Recoveries	2,212		8,852
Net Charge offs	(3,289)		(1,294)
Provision for credit losses	18,000		33,000
Balance at end of period	$ 366,208		$ 351,496
Percent of Loans	1.25%		1.22%
Allowance for Loans Losses and Unfunded Commitments [Member] | Asset-based lending & equipment finance
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	7,165	5,040	5,040
Charge offs	0		0
Recoveries	0		0
Net Charge offs	0		0
Provision for credit losses	(102)		2,125
Balance at end of period	$ 7,063		$ 7,165
Percent of Loans	1.35%		1.56%
Allowance for Loans Losses and Unfunded Commitments [Member] | Commercial and industrial
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Charge offs	$ (2,975)		$ (4,491)
Recoveries	1,216		5,282
Net Charge offs	(1,759)		791
Allowance for credit losses on loans
Balance at beginning of period	124,908	103,276	103,276
Charge offs	(2,975)		(4,491)
Recoveries	1,216		5,282
Net Charge offs	(1,759)		791
Provision for credit losses	6,808		20,842
Balance at end of period	$ 129,957		$ 124,908
Percent of Loans	1.39%		1.34%
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		13
Net Charge offs	3		13
Allowance for credit losses on loans
Balance at beginning of period	9,579	11,681	11,681
Charge offs	0		0
Recoveries	3		13
Net Charge offs	3		13
Provision for credit losses	931		(2,115)
Balance at end of period	$ 10,513		$ 9,579
Percent of Loans	1%		0.97%
Allowance for Loans Losses and Unfunded Commitments [Member] | Commercial and business lending
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Charge offs	$ (2,975)		$ (4,491)
Recoveries	1,219		5,295
Net Charge offs	(1,756)		804
Allowance for credit losses on loans
Balance at beginning of period	141,652	119,997	119,997
Charge offs	(2,975)		(4,491)
Recoveries	1,219		5,295
Net Charge offs	(1,756)		804
Provision for credit losses	7,637		20,852
Balance at end of period	$ 147,533		$ 141,652
Percent of Loans	1.35%		1.32%
Allowance for Loans Losses and Unfunded Commitments [Member] | Commercial real estate — investor
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Charge offs	$ 0		$ (50)
Recoveries	0		50
Net Charge offs	0		0
Allowance for credit losses on loans
Balance at beginning of period	55,108	73,739	73,739
Charge offs	0		(50)
Recoveries	0		50
Net Charge offs	0		0
Provision for credit losses	570		(18,631)
Balance at end of period	$ 55,678		$ 55,108
Percent of Loans	1.09%		1.08%
Allowance for Loans Losses and Unfunded Commitments [Member] | Real estate construction
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Charge offs	$ 0		$ (48)
Recoveries	18		106
Net Charge offs	18		58
Allowance for credit losses on loans
Balance at beginning of period	66,171	53,229	53,229
Charge offs	0		(48)
Recoveries	18		106
Net Charge offs	18		58
Provision for credit losses	4,909		12,884
Balance at end of period	$ 71,098		$ 66,171
Percent of Loans	3.31%		3.07%
Allowance for Loans Losses and Unfunded Commitments [Member] | Commercial real estate lending
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Charge offs	$ 0		$ (98)
Recoveries	18		156
Net Charge offs	18		58
Allowance for credit losses on loans
Balance at beginning of period	121,279	126,968	126,968
Charge offs	0		(98)
Recoveries	18		156
Net Charge offs	18		58
Provision for credit losses	5,479		(5,748)
Balance at end of period	$ 126,776		$ 121,279
Percent of Loans	1.75%		1.68%
Allowance for Loans Losses and Unfunded Commitments [Member] | Total commercial
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Charge offs	$ (2,975)		$ (4,588)
Recoveries	1,237		5,451
Net Charge offs	(1,738)		862
Allowance for credit losses on loans
Balance at beginning of period	262,931	246,965	246,965
Charge offs	(2,975)		(4,588)
Recoveries	1,237		5,451
Net Charge offs	(1,738)		862
Provision for credit losses	13,116		15,104
Balance at end of period	$ 274,309		$ 262,931
Percent of Loans	1.51%		1.46%
Allowance for Loans Losses and Unfunded Commitments [Member] | Residential mortgage
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Charge offs	$ (168)		$ (567)
Recoveries	114		908
Net Charge offs	(53)		341
Allowance for credit losses on loans
Balance at beginning of period	38,298	40,787	40,787
Charge offs	(168)		(567)
Recoveries	114		908
Net Charge offs	(53)		341
Provision for credit losses	851		(2,830)
Balance at end of period	$ 39,096		$ 38,298
Percent of Loans	0.45%		0.45%
Allowance for Loans Losses and Unfunded Commitments [Member] | Auto finance
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Charge offs	$ (1,103)		$ (1,041)
Recoveries	147		98
Net Charge offs	(957)		(943)
Allowance for credit losses on loans
Balance at beginning of period	19,619	1,999	1,999
Charge offs	(1,103)		(1,041)
Recoveries	147		98
Net Charge offs	(957)		(943)
Provision for credit losses	3,531		18,563
Balance at end of period	$ 22,193		$ 19,619
Percent of Loans	1.43%		1.42%
Allowance for Loans Losses and Unfunded Commitments [Member] | Home equity
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Charge offs	$ (111)		$ (587)
Recoveries	451		1,385
Net Charge offs	340		798
Allowance for credit losses on loans
Balance at beginning of period	17,574	16,603	16,603
Charge offs	(111)		(587)
Recoveries	451		1,385
Net Charge offs	340		798
Provision for credit losses	(449)		173
Balance at end of period	$ 17,465		$ 17,574
Percent of Loans	2.86%		2.81%
Allowance for Loans Losses and Unfunded Commitments [Member] | Other consumer
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Charge offs	$ (1,144)		$ (3,363)
Recoveries	263		1,010
Net Charge offs	(881)		(2,353)
Allowance for credit losses on loans
Balance at beginning of period	13,073	13,436	13,436
Charge offs	(1,144)		(3,363)
Recoveries	263		1,010
Net Charge offs	(881)		(2,353)
Provision for credit losses	952		1,990
Balance at end of period	$ 13,145		$ 13,073
Percent of Loans	4.71%		4.43%
Allowance for Loans Losses and Unfunded Commitments [Member] | Total consumer
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Charge offs	$ (2,525)		$ (5,558)
Recoveries	975		3,401
Net Charge offs	(1,550)		(2,157)
Allowance for credit losses on loans
Balance at beginning of period	88,565	$ 72,825	72,825
Charge offs	(2,525)		(5,558)
Recoveries	975		3,401
Net Charge offs	(1,550)		(2,157)
Provision for credit losses	4,884		17,896
Balance at end of period	$ 91,898		$ 88,565
Percent of Loans	0.83%		0.82%

Loans Narrative (Details)

Loans Narrative (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022	Dec. 31, 2022
Loans Information [Line Items]
Interest receivable	$ 152,404		$ 144,449
Financing Receivable, Nonaccrual, Interest Income	0	$ 0
Loans and Finance Receivables [Member]
Loans Information [Line Items]
Interest receivable	$ 119,000		$ 113,000

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, 2023	Mar. 31, 2022	Dec. 31, 2022	Dec. 31, 2021
Summary of core deposit intangibles and other intangibles
Other intangible amortization	$ 2,203	$ 2,203
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	(41,030)		(38,827)
Total estimated amortization expense and MSRs decay	47,079		49,282
Other intangible amortization	$ 2,203		$ 8,811

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, 2023	Mar. 31, 2022	Dec. 31, 2022	Jan. 01, 2022	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					$ 54,862
Cumulative effect of accounting methodology change				$ 2,296
Servicing Asset at Fair Value, Amount	$ 74,479		$ 77,351		$ 57,158
Additions	474	$ 3,042	7,279
Paydowns	(1,489)		(9,350)
Change in fair value model assumptions	0		5,715
Changes in fair value of asset	(1,857)		16,549
Portfolio Of Residential Mortgage Loans Serviced For Others	$ 6,611,770		$ 6,711,820
Mortgage Servicing Rights Net To Servicing Portfolio	1.13%		1.15%

Goodwill and Other Intangible_5

Goodwill and Other Intangible Assets, Estimated Future Amortization Expense (Details) - USD ($) $ in Thousands	Mar. 31, 2023	Dec. 31, 2022
Core Deposit Intangibles
Estimated future amortization expense
Nine months ended December 31, 2023	$ 6,608
2024	8,811
2025	8,811
2026	8,811
2027	8,811
2028	3,485
Beyond 2028	1,742
Total estimated amortization expense and MSRs decay	47,079	$ 49,282
Mortgage Servicing Rights
Estimated future amortization expense
Nine months ended December 31, 2023	9,713
2024	12,079
2025	10,382
2026	8,924
2027	7,518
2028	6,564
Beyond 2028	19,299
Total estimated amortization expense and MSRs decay	$ 74,479

Goodwill and Other Intangible_6

Goodwill and Other Intangible Assets (Details Textuals) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2023	Dec. 31, 2022	Mar. 31, 2022
Goodwill [Line Items]
Goodwill, Impaired, Facts and Circumstances Leading to Impairment	no
Goodwill, Impairment Loss	$ 0	$ 0
Goodwill	$ 1,104,992	$ 1,104,992	$ 1,104,992

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, 2023	Dec. 31, 2022
Short-term Funding [Abstract]
Federal funds purchased	$ 350	$ 344,170
Securities sold under agreements to repurchase	208,048	240,969
Federal funds purchased and securities sold under agreements to repurchase	208,398	585,139
Commercial paper	18,210	20,798
Total short-term funding	226,608	605,937
Long-term funding
Subordinated Debt	550,000	250,000
Other Long-term Debt and Capitalized Costs	(8,513)	(544)
Finance lease liability	448	469
Long-term Debt	544,103	248,071
TotalShortTermLongTermExcludingFHLB	770,711	854,007
Advance from Federal Home Loan Bank	3,785,000	3,125,000
Advance from Federal Home Loan Bank [Abstract]
Advance from Federal Home Loan Bank	3,785,000	3,125,000
Long-Term Federal Home Loan Bank Advances	1,208,745	1,209,170
Federal Home Loan Bank, Advances, Branch of FHLB Bank, Amount of Advances	4,986,138	4,319,861
Debt, Long-Term and Short-Term, Combined Amount	5,756,849	5,173,869
Fair Value Hedging [Member]
Long-term funding
Subordinated Debt	2,168	(1,855)
Advance from Federal Home Loan Bank	(7,607)	(14,308)
Advance from Federal Home Loan Bank [Abstract]
Advance from Federal Home Loan Bank	$ (7,607)	$ (14,308)

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, 2023	Dec. 31, 2022
Agency mortgage-related securities | Maturity Overnight and on Demand [Member]
RemainingContractualMaturityoftheSecuritiesSoldUnderAgreementtoRepurchase [Line Items]
Repurchase agreements	$ 208,048	$ 240,969

Short and Long-Term Funding (Lo

Short and Long-Term Funding (Long-term Funding Narrative) (Details) - USD ($) $ in Millions		1 Months Ended
	Feb. 10, 2023	Nov. 30, 2014	Mar. 31, 2023
Long-term funding
Fair Value of Pledged Securites to Securities Sold under Agreements to Repurchase			157%
Debt Instrument, Redemption Period, Start Date	Mar. 01, 2028
Interest Added to UST 5 Year Rate	2.812%
Two Thousand Fourteen Subordinated Notes
Long-term funding
Debt Instrument, Issuance Date Month, Year		November 2014
Junior Subordinated Debentures Issued		$ 250
Debt Instrument, Term		10 years
Debt Instrument, Maturity Date Month, Year		January 2025
Debt Instrument Call Date Earliest Month Year		October 2024
Subordinated Borrowing, Interest Rate		4.25%
Two Thousand Twenty Three Subordinated Notes
Long-term funding
Debt Instrument, Issuance Date Month, Year	February 2023
Junior Subordinated Debentures Issued	$ 300
Debt Instrument, Maturity Date Month, Year	March 1, 2033
Subordinated Borrowing, Interest Rate	6.625%

Derivative and Hedging Activi_3

Derivative and Hedging Activities, Derivative Instruments Not Designated as Hedging Instruments (Details) - USD ($) $ in Thousands	Mar. 31, 2023	Dec. 31, 2022
Other Assets [Member]
Derivative Instruments Not Designated as Hedging Instruments [Abstract]
Derivatives (trading and other assets), fair value	$ 94,687	$ 68,759
Less: Legally enforceable master netting agreements	8,301	2,788
Less: Cash collateral pledged/received	36,331	26,898
Derivative Asset	50,056	39,072
Liability
Derivative Instruments Not Designated as Hedging Instruments [Abstract]
Derivatives (trading and other liabilities), fair value	202,974	254,506
Less: Legally enforceable master netting agreements	8,301	2,788
Less: Cash collateral pledged/received	342	217
Derivatives (trading liabilities)	194,331	251,500
Not designated as hedging instruments: | Other Assets [Member]
Derivative Instruments Not Designated as Hedging Instruments [Abstract]
Derivatives (trading and other assets), fair value	75,271	64,410
Not designated as hedging instruments: | Other Assets [Member] | Interest rate-related instruments — customer and mirror
Derivative Instruments Not Designated as Hedging Instruments [Abstract]
Notional Amount	4,412,666	4,246,823
Not designated as hedging instruments: | Other Assets [Member] | Mortgage banking(a)
Derivative Instruments Not Designated as Hedging Instruments [Abstract]
Notional Amount	59,184	21,265
Not designated as hedging instruments: | Other Assets [Member] | Interest rate lock commitments (mortgage)
Derivative Instruments Not Designated as Hedging Instruments [Abstract]
Notional Amount	468,094	499,078
Not designated as hedging instruments: | Liability
Derivative Instruments Not Designated as Hedging Instruments [Abstract]
Derivatives (trading and other assets), fair value	202,974	253,245
Not designated as hedging instruments: | Liability | Interest rate-related instruments — customer and mirror
Derivative Instruments Not Designated as Hedging Instruments [Abstract]
Notional Amount	4,737,474	4,599,391
Not designated as hedging instruments: | Liability | Forward Commitments to Sell Residential Mortgage Loans
Derivative Instruments Not Designated as Hedging Instruments [Abstract]
Notional Amount	83,500	33,000
Not designated as hedging instruments: | Liability | Interest rate lock commitments (mortgage)
Derivative Instruments Not Designated as Hedging Instruments [Abstract]
Notional Amount	454,970	461,134
Designated as Hedging Instrument | Interest rate-related instruments — customer and mirror
Derivative Instruments Not Designated as Hedging Instruments [Abstract]
Derivative Asset	19,416	4,349
Derivatives (trading liabilities)	0	1,260
Designated as Hedging Instrument | Other Assets [Member] | Interest rate-related instruments — customer and mirror
Derivative Instruments Not Designated as Hedging Instruments [Abstract]
Notional Amount	2,000,000	900,000
Designated as Hedging Instrument | Liability | Interest rate-related instruments — customer and mirror
Derivative Instruments Not Designated as Hedging Instruments [Abstract]
Notional Amount	850,000	1,150,000
Fair Value, Inputs, Level 3
Derivative Instruments Not Designated as Hedging Instruments [Abstract]
Derivatives (trading liabilities)	441	46
Fair Value, Measurements, Recurring | Not designated as hedging instruments: | Mortgage banking(a)
Derivative Instruments Not Designated as Hedging Instruments [Abstract]
Derivative Asset	338	86
Fair Value, Measurements, Recurring | Fair Value, Inputs, Level 3 | Forward Commitments to Sell Residential Mortgage Loans
Derivative Instruments Not Designated as Hedging Instruments [Abstract]
Derivatives (trading liabilities)	441	46
Fair Value, Measurements, Recurring | Fair Value, Inputs, Level 2 | Interest rate lock commitments (mortgage)
Derivative Instruments Not Designated as Hedging Instruments [Abstract]
Derivatives (trading liabilities)	3,194	1,801
Fair Value, Measurements, Recurring | Fair Value, Inputs, Level 2 | Not designated as hedging instruments: | Interest rate-related instruments — customer and mirror
Derivative Instruments Not Designated as Hedging Instruments [Abstract]
Derivative Asset	71,619	62,401
Derivatives (trading liabilities)	199,339	251,398
Fair Value, Measurements, Recurring | Fair Value, Inputs, Level 2 | Not designated as hedging instruments: | Interest rate lock commitments (mortgage)
Derivative Instruments Not Designated as Hedging Instruments [Abstract]
Derivative Asset	$ 3,313	$ 1,922

Derivative and Hedging Activi_4

Derivative and Hedging Activities Cumulative Basis Adjustment for Fair Value Hedges (Details) - USD ($) $ in Thousands	Mar. 31, 2023	Dec. 31, 2022
Forward commitments to sell residential mortgage loans
Balance Sheet Recording of Fair Value Hedge [Line Items]
Derivatives (trading liabilities)	$ (1,144,561)	$ (833,837)
Fair Value Hedging [Member]
Balance Sheet Recording of Fair Value Hedge [Line Items]
Deferred (Gain) Loss on Discontinuation of Fair Value Hedge	5,439	16,163
Long-Term Debt [Member] | Forward commitments to sell residential mortgage loans
Balance Sheet Recording of Fair Value Hedge [Line Items]
Derivatives (trading liabilities)	(552,168)	(248,145)
Long-Term Debt [Member] | Fair Value Hedging [Member]
Balance Sheet Recording of Fair Value Hedge [Line Items]
Deferred (Gain) Loss on Discontinuation of Fair Value Hedge	(2,168)	1,855
Federal Home Loan Bank Advances [Member] | Forward commitments to sell residential mortgage loans
Balance Sheet Recording of Fair Value Hedge [Line Items]
Derivatives (trading liabilities)	(592,393)	(585,692)
Federal Home Loan Bank Advances [Member] | Fair Value Hedging [Member]
Balance Sheet Recording of Fair Value Hedge [Line Items]
Deferred (Gain) Loss on Discontinuation of Fair Value Hedge	7,607	$ 14,308
Designated as Hedging Instrument
Balance Sheet Recording of Fair Value Hedge [Line Items]
Deferred (Gain) Loss on Discontinuation of Fair Value Hedge	$ 1,000

Derivative and Hedging Activi_5

Derivative and Hedging Activities Income impact of Fair Value and Cash Flow Hedge (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Change in Unrealized Gain (Loss) on Hedged Item in Fair Value Hedge	$ (10,724)	$ 0
Unrealized Gain (Loss) on Cash Flow Hedging Instruments	13,763	0
Derivative Instruments, Gain (Loss) Reclassified from Accumulated OCI into Income, Effective Portion, Net	1,262	0
Interest Income [Member]
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Change in Unrealized Gain (Loss) on Hedged Item in Fair Value Hedge	(1,321)	(179)
Interest Income [Member] | 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	(59)	(179)
Interest Income [Member] | Designated as Hedging Instrument
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Change in Unrealized Gain (Loss) on Hedged Item in Fair Value Hedge	(1,262)	$ 0
Interest Expense
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Change in Unrealized Gain (Loss) on Hedged Item in Fair Value Hedge	2,515
Interest Expense | 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	10,724
Interest Expense | Designated as Hedging Instrument
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Change in Unrealized Gain (Loss) on Hedged Item in Fair Value Hedge	$ (8,209)

Derivative and Hedging Activi_6

Derivative and Hedging Activities, Cash Flow Hedge Included in AOCI (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Cash Flow Hedge Impacts on AOCI [Line Items]
Unrealized Gain (Loss) on Cash Flow Hedging Instruments	$ 13,763	$ 0
Derivative Instruments, Gain (Loss) Reclassified from Accumulated OCI into Income, Effective Portion, Net	$ 1,262	$ 0

Derivative and Hedging Activi_7

Derivative and Hedging Activities Derivative Impact on Perfomance (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Capital markets, net | Interest rate-related and other instruments — customer and mirror, net
Derivative instruments
Derivative Instruments Not Designated as Hedging Instruments, Gain (Loss), Net	$ (70)	$ 558
Capital markets, net | Foreign currency exchange forwards
Derivative instruments
Derivative Instruments Not Designated as Hedging Instruments, Gain (Loss), Net	252	(2,842)
Capital markets, net | Commodity contracts
Derivative instruments
Derivative Instruments Not Designated as Hedging Instruments, Gain (Loss), Net	(395)	4,757
Mortgage banking, net | Interest Rate-Related Instruments - MSRs Hedge
Derivative instruments
Derivative Instruments Not Designated as Hedging Instruments, Gain (Loss), Net	2,521	(3,666)
Mortgage banking, net | Interest rate lock commitments (mortgage)
Derivative instruments
Derivative Instruments Not Designated as Hedging Instruments, Gain (Loss), Net	$ (2)	$ 123

Derivative and Hedging Activi_8

Derivative and Hedging Activities (Details Textuals) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2023	Dec. 31, 2022	Dec. 31, 2019
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Maximum Length of Time Hedged in Cash Flow Hedge	44 months
Cash Flow Hedge Gain (Loss) to be Reclassified within 12 Months	$ 6,000
Underlying Hedged Asset, Amortized Cost Basis	315,000
Derivative collateral right to reclaim cash	610	$ 3,000
Additional Collateral, Aggregate Fair Value	$ 106,000	$ 92,000
Derivative Liability Notional Amount, Terminated			$ 500,000

Balance Sheet Offsetting (Detai

Balance Sheet Offsetting (Details) - Interest Rate Contract - USD ($) $ in Thousands	Mar. 31, 2023	Dec. 31, 2022
Derivative assets
Gross Amounts Recognized	$ 78,018	$ 63,029
Derivative Liabilities Offset	(8,301)	(2,788)
Derivative Asset, Collateral, Obligation to Return Cash, Offset	(36,331)	(26,898)
Net Amounts Presented on the Consolidated Balance Sheets	33,387	33,342
Gross Amounts Not Offset on the Consolidated Balance Sheets	(32,827)	(30,753)
Derivative Asset, Fair Value, Amount Offset Against Collateral	560	2,589
Derivative liabilities
Gross Amounts Recognized	8,676	3,096
Derivative Liability, Fair Value, Gross Asset	(8,301)	(2,788)
Derivative Liability, Collateral, Right to Reclaim Cash, Offset	(342)	(217)
Net Amounts Presented on the Consolidated Balance Sheets	34	91
Gross Amounts Not Offset on the Consolidated Balance Sheets	0	0
Derivative Liability, Fair Value, Amount Offset Against Collateral	$ 34	$ 91

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, 2023	Dec. 31, 2022
Schedule of lending-related and other commitments [Line Items]
Lending Related Commitments, Fair Value	$ 0
Commitments to extend credit, excluding commitments to originate residential mortgage loans held for sale(a)(b)
Schedule of lending-related and other commitments [Line Items]
Lending Related Commitments By Type [Domain]	11,919,626	$ 12,444,275
Commercial letters of credit(a)
Schedule of lending-related and other commitments [Line Items]
Lending Related Commitments By Type [Domain]	5,413	3,188
Standby letters of credit(c)
Schedule of lending-related and other commitments [Line Items]
Lending Related Commitments By Type [Domain]	251,565	270,692
Lines of Credit, Fair Value Disclosure	$ 3,000	$ 3,000

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, 2023	Dec. 31, 2022
Off-Balance Sheet, Credit Loss, Liability [Roll Forward]
Off-Balance-Sheet, Credit Loss, Liability, Beginning Balance	$ 38,776	$ 39,776
Off-Balance Sheet, Credit Loss, Liability	39,776	38,776
Provision for credit losses	1,000	(1,000)
Off-Balance-Sheet, Credit Loss, Liability, Ending Balance	$ 39,776	$ 38,776

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, 2023	Mar. 31, 2022	Dec. 31, 2022
Commitments, Off-Balance Sheet Arrangements, and Contingent Liabilities (Textuals) [Line Items]
Expense Related to Qualified Affordable Housing Projects	$ 9,000,000	$ 8,000,000
Remaining Investment in Qualified Affordable Housing Projects	237,000,000		$ 246,000,000
Variable Interest Entity Reporting Entity Involvement Unfunded Obligation Amount	34,000,000		40,000,000
Qualified Affordable Housing Investments, Impairment Loss	0		0
Loans Repurchased Under Make Whole Requests	2,000,000		6,000,000
Loans Sold To Outside Investors Original Amount	2,500,000,000
Loans Sold To Outside Investors Remaining Outstanding Amount	2,100,000,000
Mortgage Repurchase Reserve	566,000		1,000,000
Residential Mortgage Loans Sold With Recourse Risk	7,000,000
Residential Mortgage Loans Sold With Credit Recourse Risk	18,000,000		19,000,000
Residential Mortgage Loans with Credit Risk Recourse	0
SBA Loan Fund, Remaining Unfunded Equity Contribution	$ 5,000,000
Make Whole Requests, Loan Origination Date, Majority	Jan. 01, 2021
UnconsolidatedProjectsLowIncomeHousing [Member]
Commitments, Off-Balance Sheet Arrangements, and Contingent Liabilities (Textuals) [Line Items]
Other Investments	$ 241,000,000		250,000,000
PrincipalInvestmentCommitment [Member]
Commitments, Off-Balance Sheet Arrangements, and Contingent Liabilities (Textuals) [Line Items]
Other Investments	$ 28,000,000		$ 27,000,000

Fair Value Measurements, Assets

Fair Value Measurements, Assets and Liabilities Measured at Fair Value on a Recurring Basis (Details) - USD ($) $ in Thousands	Mar. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Assets, Fair Value Disclosure [Abstract]
AFS investment securities, at fair value	$ 3,381,607	$ 2,742,025
Equity securities with readily determinable fair values, Fair Value	6,000	6,000
Servicing Asset at Fair Value, Amount	74,479	77,351	$ 57,158
Fair Value, Inputs, Level 1
Assets, Fair Value Disclosure [Abstract]
AFS investment securities, at fair value	111,743	109,378
Equity securities with readily determinable fair values, Fair Value	6,286	5,991
Fair Value, Inputs, Level 2
Assets, Fair Value Disclosure [Abstract]
AFS investment securities, at fair value	3,269,864	2,632,647
Fair Value, Inputs, Level 3
Assets, Fair Value Disclosure [Abstract]
Servicing Asset at Fair Value, Amount	74,479	77,351
Liabilities, Fair Value Disclosure [Abstract]
Trading liabilities	441	46
Fair Value, Measurements, Recurring | Fair Value, Inputs, Level 2 | Designated as Hedging Instrument
Assets, Fair Value Disclosure [Abstract]
Interest Rate Fair Value Hedge Asset at Fair Value	19,416	4,349
Liabilities, Fair Value Disclosure [Abstract]
Interest Rate Fair Value Hedge Liability at Fair Value	0	1,260
Fair Value, Measurements, Recurring | Fair Value, Inputs, Level 3
Assets, Fair Value Disclosure [Abstract]
Servicing Asset at Fair Value, Amount	74,479	77,351
US Treasury Securities
Assets, Fair Value Disclosure [Abstract]
AFS investment securities, at fair value	111,743	109,378
US Treasury Securities | Fair Value, Measurements, Recurring | Fair Value, Inputs, Level 1
Assets, Fair Value Disclosure [Abstract]
AFS investment securities, at fair value	111,743	109,378
Agency Securities
Assets, Fair Value Disclosure [Abstract]
AFS investment securities, at fair value	13,730	13,532
Agency Securities | Fair Value, Measurements, Recurring | Fair Value, Inputs, Level 2
Assets, Fair Value Disclosure [Abstract]
AFS investment securities, at fair value	13,730	13,532
US States and Political Subdivisions Debt Securities [Member]
Assets, Fair Value Disclosure [Abstract]
AFS investment securities, at fair value	228,902	230,714
US States and Political Subdivisions Debt Securities [Member] | Fair Value, Measurements, Recurring | Fair Value, Inputs, Level 2
Assets, Fair Value Disclosure [Abstract]
AFS investment securities, at fair value	228,902	230,714
Mortgage-backed Securities, Issued by Private Enterprises [Member]
Assets, Fair Value Disclosure [Abstract]
AFS investment securities, at fair value	0
Residential Related Securities | FNMA/FHLMC
Assets, Fair Value Disclosure [Abstract]
AFS investment securities, at fair value	1,574,578	1,604,610
Residential Related Securities | FNMA/FHLMC | Fair Value, Measurements, Recurring | Fair Value, Inputs, Level 2
Assets, Fair Value Disclosure [Abstract]
AFS investment securities, at fair value	1,574,578	1,604,610
Residential Related Securities | Government National Mortgage Association (GNMA) [Member]
Assets, Fair Value Disclosure [Abstract]
AFS investment securities, at fair value	1,095,588	497,596
Residential Related Securities | Government National Mortgage Association (GNMA) [Member] | Fair Value, Measurements, Recurring | Fair Value, Inputs, Level 2
Assets, Fair Value Disclosure [Abstract]
AFS investment securities, at fair value	1,095,588	497,596
Commercial mortgage-related securities | FNMA/FHLMC
Assets, Fair Value Disclosure [Abstract]
AFS investment securities, at fair value	17,618	17,142
Commercial mortgage-related securities | FNMA/FHLMC | Fair Value, Measurements, Recurring | Fair Value, Inputs, Level 2
Assets, Fair Value Disclosure [Abstract]
AFS investment securities, at fair value	17,618	17,142
Commercial mortgage-related securities | Government National Mortgage Association (GNMA) [Member]
Assets, Fair Value Disclosure [Abstract]
AFS investment securities, at fair value	189,466	110,462
Commercial mortgage-related securities | Government National Mortgage Association (GNMA) [Member] | Fair Value, Measurements, Recurring | Fair Value, Inputs, Level 2
Assets, Fair Value Disclosure [Abstract]
AFS investment securities, at fair value	189,466	110,462
Federal Family Education Loan Program (FFELP) Guaranteed Loans [Member]
Assets, Fair Value Disclosure [Abstract]
AFS investment securities, at fair value	143,084	151,191
Federal Family Education Loan Program (FFELP) Guaranteed Loans [Member] | Fair Value, Measurements, Recurring | Fair Value, Inputs, Level 2
Assets, Fair Value Disclosure [Abstract]
AFS investment securities, at fair value	143,084	151,191
US Government-sponsored Enterprises Debt Securities [Member]
Assets, Fair Value Disclosure [Abstract]
AFS investment securities, at fair value	3,983	4,477
US Government-sponsored Enterprises Debt Securities [Member] | Fair Value, Measurements, Recurring | Fair Value, Inputs, Level 2
Assets, Fair Value Disclosure [Abstract]
AFS investment securities, at fair value	3,983	4,477
Other Debt securities
Assets, Fair Value Disclosure [Abstract]
AFS investment securities, at fair value	2,918	2,922
Other Debt securities | Fair Value, Measurements, Recurring | Fair Value, Inputs, Level 2
Assets, Fair Value Disclosure [Abstract]
AFS investment securities, at fair value	2,918	2,922
Available-for-sale Securities [Member] | Fair Value, Measurements, Recurring | Fair Value, Inputs, Level 1
Assets, Fair Value Disclosure [Abstract]
AFS investment securities, at fair value	111,743	109,378
Available-for-sale Securities [Member] | Fair Value, Measurements, Recurring | Fair Value, Inputs, Level 2
Assets, Fair Value Disclosure [Abstract]
AFS investment securities, at fair value	3,269,864	2,632,647
Other Debt And Other Equity Securities | Fair Value, Measurements, Recurring | Fair Value, Inputs, Level 1
Assets, Fair Value Disclosure [Abstract]
Equity securities with readily determinable fair values, Fair Value	6,286	5,991
Residential loans held for sale | Fair Value, Measurements, Recurring | Fair Value, Inputs, Level 2
Assets, Fair Value Disclosure [Abstract]
Trading assets	35,742	20,383
Mortgage banking(a) | Fair Value, Measurements, Recurring | Fair Value, Inputs, Level 3
Assets, Fair Value Disclosure [Abstract]
Trading assets	338	$ 86
Forward Commitments to Sell Residential Mortgage Loans | Fair Value, Measurements, Recurring | Fair Value, Inputs, Level 3
Liabilities, Fair Value Disclosure [Abstract]
Trading liabilities	$ 441

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, 2023	Dec. 31, 2022
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	$ 86	$ 2,617
New production	1,134	10,442
Closed loans / settlements	(570)	(913)
Other	(312)	(12,060)
Change in mortgage derivative	252	(2,531)
Ending Balance	338	86
Forward commitments to sell residential mortgage loans
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward]
Beginning Balance	46	(30)
New production	(294)	(2,028)
Closed loans / settlements	46	24,766
Other	644	(22,662)
Change in mortgage derivative	395	76
Ending Balance	441	46
Total derivatives
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward]
Beginning Balance	40	2,647
New production	1,429	12,470
Closed loans / settlements	(616)	(25,679)
Other	(956)	10,603
Change in mortgage derivative	(143)	(2,607)
Ending Balance	$ (103)	$ 40

Fair Value Measurements Equity

Fair Value Measurements Equity Securities Without Readily Determinable Fair Values (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2023 USD ($)
Equity Securities Without Readily Determinable Fair Value Amount [Roll Forward]
Carrying value as of December 31, 2022	$ 19,225
Carrying value changes	0
Purchases	5,003
Equity Securities without Readily Determinable Fair Value, Sales, Annual Amount	0
Carrying value as of March 31, 2023	24,228
Cumulative upward carrying value changes between January 1, 2018 and March 31, 2023	19,134
Cumulative downward carrying value changes/impairment between January 1, 2018 and March 31, 2023	$ 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, 2023	Dec. 31, 2022
Assets and Liabilities Measured at Fair Value on a Non-recurring Basis
Net write-up of equity securities	$ 0
Equity securities	24,228	$ 19,225
Equity securities	30,514	25,216
Fair Value, Inputs, Level 3
Assets and Liabilities Measured at Fair Value on a Non-recurring Basis
Equity securities	19,228	19,225
Equity securities	19,228	19,225
Fair Value, Inputs, Level 2
Assets and Liabilities Measured at Fair Value on a Non-recurring Basis
Equity securities	5,000	0
Equity securities	5,000	0
Fair Value, Nonrecurring [Member] | Fair Value, Inputs, Level 3
Assets and Liabilities Measured at Fair Value on a Non-recurring Basis
Individually evaluated loans	35,499	23,584
Provision for credit losses	4,608	4,405
Equity securities		19,134
Equity securities		5,690
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	46	971
OREO(b)	$ 70	$ 2,196

Fair Value Measurements Fair Va

Fair Value Measurements Fair Value Unobservable Level 3 Measurements (Details) - Fair Value, Inputs, Level 3	3 Months Ended
	Mar. 31, 2023
Discounted Cash Flow | Mortgage Servicing Rights | Minimum
Assumption for Fair Value as of Balance Sheet Date of Assets or Liabilities that relate to Transferor's Continuing Involvement [Line Items]
Assumption for Fair Value of Assets or Liabilities that relate to Transferor's Continuing Involvement, Discount Rate	6%
Assumption for Fair Value of Assets or Liabilities that relate to Transferor's Continuing Involvement, Prepayment Speed	0%
Discounted Cash Flow | Mortgage Servicing Rights | Maximum
Assumption for Fair Value as of Balance Sheet Date of Assets or Liabilities that relate to Transferor's Continuing Involvement [Line Items]
Assumption for Fair Value of Assets or Liabilities that relate to Transferor's Continuing Involvement, Discount Rate	9%
Assumption for Fair Value of Assets or Liabilities that relate to Transferor's Continuing Involvement, Prepayment Speed	100%
Discounted Cash Flow | Mortgage Servicing Rights | Weighted Average [Member]
Assumption for Fair Value as of Balance Sheet Date of Assets or Liabilities that relate to Transferor's Continuing Involvement [Line Items]
Assumption for Fair Value of Assets or Liabilities that relate to Transferor's Continuing Involvement, Discount Rate	7%
Assumption for Fair Value of Assets or Liabilities that relate to Transferor's Continuing Involvement, Prepayment Speed	7%
Discounted Cash Flow | Mortgage banking(a) | 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	5%
Discounted Cash Flow | Mortgage banking(a) | 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	100%
Discounted Cash Flow | Mortgage banking(a) | 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	74%
Appraisals/Discounted Cash Flow | Impaired Finance Receivable | Minimum
Assumption for Fair Value as of Balance Sheet Date of Assets or Liabilities that relate to Transferor's Continuing Involvement [Line Items]
Assumption for Fair Value of Assets or Liabilities that relate to Transferor's Continuing Involvement, Discount Rate	25%
Appraisals/Discounted Cash Flow | Impaired Finance Receivable | Maximum
Assumption for Fair Value as of Balance Sheet Date of Assets or Liabilities that relate to Transferor's Continuing Involvement [Line Items]
Assumption for Fair Value of Assets or Liabilities that relate to Transferor's Continuing Involvement, Discount Rate	48%
Appraisals/Discounted Cash Flow | Impaired Finance Receivable | Weighted Average [Member]
Assumption for Fair Value as of Balance Sheet Date of Assets or Liabilities that relate to Transferor's Continuing Involvement [Line Items]
Assumption for Fair Value of Assets or Liabilities that relate to Transferor's Continuing Involvement, Discount Rate	35%

Fair Value Measurements, Fair V

Fair Value Measurements, Fair Value of Financial Instruments (Details) - USD ($) $ in Thousands	Mar. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Financial assets
Cash and due from banks	$ 311,269	$ 436,952
Interest-bearing deposits in other financial institutions	511,116	156,693
Federal funds sold and securities purchased under agreements to resell	455	27,810
Available-for-sale Securities	3,381,607	2,742,025
Debt Securities, Held-to-Maturity, Amortized Cost, before Allowance for Credit Loss	3,967,083	3,960,451
Investment securities held to maturity, fair value	3,481,502	3,401,018
Equity securities with readily determinable fair values, Fair Value	6,000	6,000
Equity Securities without Readily Determinable Fair Value, Amount	24,228	19,225
Equity Securities, FV-NI and without Readily Determinable Fair Value	30,514	25,216
FHLB and Federal Reserve Bank stocks	331,420	295,496
Residential loans held for sale	35,742	20,383
Commercial loans held for sale	33,490	0
Loans, net	28,880,640	28,486,849
Bank owned life insurance, fair value	677,328	676,530
Servicing Asset at Fair Value, Amount	74,479	77,351	$ 57,158
Financial liabilities
Short-term funding	226,608	605,937
Federal Home Loan Bank, Advances, Branch of FHLB Bank, Amount of Advances	4,986,138	4,319,861
Other long-term funding	544,103	248,071
Standby letters of credit(c)
Financial liabilities
Standby letters of credit, fair value	3,000	3,000
Lending Related Commitments By Type [Domain]	251,565	270,692
US Treasury Securities
Financial assets
Available-for-sale Securities	111,743	109,378
Debt Securities, Held-to-Maturity, Amortized Cost, before Allowance for Credit Loss	999	999
Investment securities held to maturity, fair value	947	936
Fair Value, Inputs, Level 1
Financial assets
Available-for-sale Securities	111,743	109,378
Equity securities with readily determinable fair value, Carrying Amount	6,286	5,991
Equity securities with readily determinable fair values, Fair Value	6,286	5,991
Fair Value, Inputs, Level 1 | US Treasury Securities | Fair Value, Measurements, Recurring
Financial assets
Available-for-sale Securities	111,743	109,378
Fair Value, Inputs, Level 2
Financial assets
Available-for-sale Securities	3,269,864	2,632,647
Debt Securities, Held-to-Maturity, Amortized Cost, before Allowance for Credit Loss	3,966,060	3,959,399
Investment securities held to maturity, fair value	3,480,530	3,400,028
Equity Securities without Readily Determinable Fair Value, Amount	5,000	0
Equity Securities, FV-NI and without Readily Determinable Fair Value	5,000	0
Financial liabilities
Brokered CDs and other time deposits	2,937,916	1,930,158
Brokered CDs and other time deposits, fair value	2,937,916	1,930,158
Short-term funding	226,608	605,937
Short-term funding, fair value	226,600	605,205
Advances, Fair Value Disclosure	4,987,658	4,322,264
Long-term funding, fair value	535,836	242,151
Standby letters of credit	2,717	2,881
Standby letters of credit, fair value	2,717	2,881
Fair Value, Inputs, Level 2 | Other Assets [Member]
Financial assets
Derivative Asset	94,349	68,672
Derivatives (trading and other assets), fair value	94,349	68,672
Fair Value, Inputs, Level 2 | Other Liabilities [Member]
Financial liabilities
Derivatives (trading liabilities)	202,533	254,459
Derivatives (trading and other liabilities), fair value	202,533	254,459
Fair Value, Inputs, Level 3
Financial assets
Equity Securities without Readily Determinable Fair Value, Amount	19,228	19,225
Equity Securities, FV-NI and without Readily Determinable Fair Value	19,228	19,225
Loans, net, fair value	27,921,022	27,481,426
Servicing Asset	74,479	77,351
Servicing Asset at Fair Value, Amount	74,479	77,351
Financial liabilities
Noninterest-bearing demand, savings, interest-bearing demand, and money market accounts	27,393,908	27,705,996
Noninterest-bearing demand, savings, interest-bearing demand, and money market deposits, fair value	27,393,908	27,705,996
Derivatives (trading liabilities)	441	46
Fair Value, Inputs, Level 3 | Fair Value, Measurements, Recurring
Financial assets
Servicing Asset at Fair Value, Amount	74,479	77,351
Fair Value, Inputs, Level 3 | Mortgage banking(a) | Fair Value, Measurements, Recurring
Financial assets
Derivative Asset	$ 338	$ 86

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, 2023	Mar. 31, 2022
RAP
Net period benefit cost for the pension and postretirement plans
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.
Service cost	$ 796	$ 923
Interest cost	2,686	1,772
Expected return on plan assets	(8,202)	(6,736)
Amortization of prior service cost	(63)	(63)
Amortization of actuarial loss	37	74
Total net periodic pension cost	(4,746)	(4,029)
Postretirement Plan
Net period benefit cost for the pension and postretirement plans
Interest cost	20	13
Amortization of prior service cost	(19)	(19)
Amortization of actuarial loss	(7)	0
Total net periodic pension cost	$ (7)	$ (6)

Retirement Plans (Details Textu

Retirement Plans (Details Textuals) (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
RAP
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Defined Benefit Plan, Plan Assets, Contributions by Employer	$ 0	$ 0

Segment Reporting (Details)

Segment Reporting (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022	Dec. 31, 2022
Segment Income Statement Data Abstract
Net interest income	$ 274,010	$ 187,747
Net intersegment interest income (expense)	0	0
Segment net interest income	274,010	187,747
Noninterest income	62,073	74,467
Total revenue	336,083	262,214
Provision for credit losses	17,971	(3,990)
Noninterest expense	187,412	173,292
Income before income taxes	130,700	92,912
Income tax expense (benefit)	27,340	18,650
Net income	103,360	74,262
Goodwill	1,104,992	1,104,992	$ 1,104,992
Operating Segments | Corporate and Commercial Specialty
Segment Income Statement Data Abstract
Net interest income	219,123	90,633
Net intersegment interest income (expense)	(80,980)	8,525
Segment net interest income	138,143	99,158
Noninterest income	32,715	37,728
Total revenue	170,858	136,886
Provision for credit losses	13,782	12,653
Noninterest expense	62,061	56,528
Income before income taxes	95,015	67,705
Income tax expense (benefit)	17,737	12,307
Net income	77,278	55,399
Goodwill	525,836	525,836
Operating Segments | Community, Consumer, and Business
Segment Income Statement Data Abstract
Net interest income	80,284	69,544
Net intersegment interest income (expense)	88,079	18,833
Segment net interest income	168,363	88,377
Noninterest income	25,949	33,207
Total revenue	194,312	121,584
Provision for credit losses	6,758	4,656
Noninterest expense	111,694	98,461
Income before income taxes	75,860	18,466
Income tax expense (benefit)	15,931	3,878
Net income	59,930	14,588
Goodwill	579,156	579,156
Operating Segments | Risk Management and Shared Services
Segment Income Statement Data Abstract
Net interest income	(25,397)	27,570
Net intersegment interest income (expense)	(7,099)	(27,358)
Segment net interest income	(32,496)	212
Noninterest income	3,409	3,532
Total revenue	(29,087)	3,744
Provision for credit losses	(2,568)	(21,300)
Noninterest expense	13,658	18,303
Income before income taxes	(40,176)	6,741
Income tax expense (benefit)	(6,328)	2,465
Net income	(33,848)	4,275
Goodwill	$ 0	$ 0

Segment Reporting (Details Text

Segment Reporting (Details Textuals)	3 Months Ended
	Mar. 31, 2023 segment
Segment Reporting [Abstract]
Number of Reportable Segments	3

Accumulated Other Comprehensi_3

Accumulated Other Comprehensive Income (Loss) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Beginning Balance	$ (272,799)
HTM investment securities, net, at amortized cost	(2,267)	$ (1,108)
Unrealized Gain (Loss) on Cash Flow Hedging Instruments	13,763	0
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI on Derivatives, before Tax	1,262	0
Personnel expense	(116,420)	(104,811)
Net other comprehensive income during period	39,211	(126,708)
Ending Balance	(233,588)
AFS Investment Securities
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Beginning Balance	(233,192)	(5,266)
Other comprehensive income before reclassifications	36,478	(103,284)
Unrealized gains (losses) on AFS securities transferred to HTM securities		(67,604)
Investment securities losses (gains), net		(21)
HTM investment securities, net, at amortized cost	2,267	1,108
Unrealized Gain (Loss) on Cash Flow Hedging Instruments	0
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI on Derivatives, before Tax	0
Personnel expense	0	0
Other expense	0	0
Income tax (expense) benefit	(9,892)	43,098
Net other comprehensive income during period	28,853	(126,702)
Ending Balance	(204,339)	(131,968)
Defined Benefit Pension and Postretirement Obligations
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Beginning Balance	(42,968)	(5,051)
Other comprehensive income before reclassifications	0	0
Unrealized gains (losses) on AFS securities transferred to HTM securities		0
Investment securities losses (gains), net		0
HTM investment securities, net, at amortized cost	0	0
Unrealized Gain (Loss) on Cash Flow Hedging Instruments	0
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI on Derivatives, before Tax	0
Personnel expense	(81)	(81)
Other expense	30	74
Income tax (expense) benefit	79	2
Net other comprehensive income during period	27	(6)
Ending Balance	(42,940)	(5,057)
Accumulated Other Comprehensive Income (Loss)
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Beginning Balance	(272,799)	(10,317)
Other comprehensive income before reclassifications	36,478	(103,284)
Unrealized gains (losses) on AFS securities transferred to HTM securities		(67,604)
Investment securities losses (gains), net		(21)
HTM investment securities, net, at amortized cost	2,267	1,108
Unrealized Gain (Loss) on Cash Flow Hedging Instruments	13,763
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI on Derivatives, before Tax	1,262
Personnel expense	(81)	(81)
Other expense	30	74
Income tax (expense) benefit	(14,507)	43,100
Net other comprehensive income during period	39,211	(126,708)
Ending Balance	(233,588)	(137,024)
Accumulated Gain (Loss), Net, Cash Flow Hedge, Parent
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Beginning Balance	3,360	0
Other comprehensive income before reclassifications	0	0
Unrealized gains (losses) on AFS securities transferred to HTM securities		0
Investment securities losses (gains), net		0
HTM investment securities, net, at amortized cost	0	0
Unrealized Gain (Loss) on Cash Flow Hedging Instruments	13,763
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI on Derivatives, before Tax	1,262
Personnel expense	0	0
Other expense	0	0
Income tax (expense) benefit	(4,694)	0
Net other comprehensive income during period	10,331	0
Ending Balance	$ 13,691	$ 0

Leases Lease, Cost and Cash Flo

Leases Lease, Cost and Cash Flows (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Leases [Abstract]
Operating lease costs	$ 1,464	$ 1,798
Finance lease costs	23	41
Operating lease cash flows	1,828	2,407
Finance lease cash flows	$ 22	$ 44

Leases Components of Lease Expe

Leases Components of Lease Expense (Details) - USD ($) $ in Thousands	Mar. 31, 2023	Dec. 31, 2022
Leases [Abstract]
Operating lease right-of-use asset	$ 24,377	$ 25,617
Finance lease right-of-use asset	433	455
Operating lease liability	26,938	28,357
Finance lease liability	$ 448	$ 469

Leases Operating Lease Informat

Leases Operating Lease Information (Details) - USD ($) $ in Thousands	Mar. 31, 2023	Dec. 31, 2022
Lessee, Lease, Description [Line Items]
Total lease payments	$ 29,307	$ 30,906
Operating Lease, Weighted Average Remaining Lease Term	6 years 3 days	6 years 2 months 1 day
Operating Lease, Weighted Average Discount Rate, Percent	2.71%	2.70%
Finance Lease, Liability, Payment, Due	$ 463	$ 485
Finance Lease, Weighted Average Remaining Lease Term	5 years	5 years 3 months
Finance Lease, Weighted Average Discount Rate, Percent	1.32%	1.32%
Equipment
Lessee, Lease, Description [Line Items]
Total lease payments	$ 0	$ 0
Operating Lease, Weighted Average Remaining Lease Term	0 years	0 years
Operating Lease, Weighted Average Discount Rate, Percent	0%	0%
Retail and corporate offices
Lessee, Lease, Description [Line Items]
Total lease payments	$ 24,738	$ 26,140
Operating Lease, Weighted Average Remaining Lease Term	5 years 9 months 3 days	5 years 11 months 1 day
Operating Lease, Weighted Average Discount Rate, Percent	2.63%	2.62%
Finance Lease, Liability, Payment, Due	$ 463	$ 485
Finance Lease, Weighted Average Remaining Lease Term	5 years	5 years 3 months
Finance Lease, Weighted Average Discount Rate, Percent	1.32%	1.32%
Land
Lessee, Lease, Description [Line Items]
Total lease payments	$ 4,569	$ 4,766
Operating Lease, Weighted Average Remaining Lease Term	7 years 5 months 8 days	7 years 7 months 2 days
Operating Lease, Weighted Average Discount Rate, Percent	3.15%	3.14%

Leases Amortization of Operatin

Leases Amortization of Operating Lease Liabilities (Details) - USD ($) $ in Thousands	Mar. 31, 2023	Dec. 31, 2022
Operating Leases
Nine months ended December 31, 2023	$ 4,540
2024	5,735
2025	4,512
2026	4,246
2027	3,807
Beyond 2027	6,468
Total lease payments	29,307	$ 30,906
Less: interest	2,369
Present value of lease payments	26,938	28,357
Finance Leases
Nine months ended December 31, 2023	69
2024	93
2025	93
2026	93
2027	93
Beyond 2027	23
Total lease payments	463	485
Less: interest	15
Present value of lease payments	448	$ 469
Total Leases
Nine months ended December 31, 2023	4,609
2024	5,827
2025	4,605
2026	4,339
2027	3,899
Beyond 2027	6,491
Total lease payments	29,770
Less: interest	2,384
Present value of lease payments	$ 27,386

Leases (Details Textuals)

Leases (Details Textuals) - USD ($) $ in Millions	Mar. 31, 2023	Dec. 31, 2022
Lessee, Lease, Description [Line Items]
Additional operating leases	$ 12	$ 13
Minimum
Lessee, Lease, Description [Line Items]
Operating lease terms	1 year
Additional operating lease terms	1 year
Maximum
Lessee, Lease, Description [Line Items]
Operating lease terms	40 years
Additional operating lease terms	6 years