CONSOLIDATED STATEMENTS OF CASH FLOWS—(UNAUDITED) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Cash flows from operating activities:
Net income	$ 75,460	$ 99,025	$ 81,317
Adjustments to reconcile net income to net cash provided by operating activities:
Provision for credit losses	21,132	20,126	3,393
Depreciation on premises and equipment	4,778	4,842	5,506
Amortization of intangible assets	4,758	5,410	5,855
Amortization of operating lease right-of-use asset	1,635	1,831	1,742
Amortization of loan servicing rights	1,550	2,294	3,242
Share-based compensation expense	2,489	2,211	1,938
Increase in cash surrender value of life insurance	(4,439)	(3,320)	(3,451)
Gain on proceeds from company-owned life insurance	0	(264)	(1,045)
Investment securities (accretion) amortization, net	(2,414)	2,311	4,196
Gain on termination of hedged interest rate swaps	0	(17,531)	(2,159)
Loss (gain) on sales of investment securities, net	9,372	230	(537)
Gain on repurchase of subordinated debt	(676)	0	0
(Loss) gain on sales of other real estate owned	(819)	118	(473)
Impairment on other real estate owned	0	4,277	454
Origination of loans held for sale	(58,953)	(134,612)	(504,801)
Proceeds from sales of loans held for sale	98,851	269,958	739,954
Gain on sale of loans held for sale	(2,395)	(844)	(4,952)
Impairment on commercial mortgage servicing rights	0	1,263	7,532
Loss on mortgage servicing rights held for sale	0	3,250	222
Net change in operating assets and liabilities:
Accrued interest receivable	(4,621)	(807)	4,075
Other assets	(18,731)	876	(31,974)
Accrued expenses and other liabilities	27,661	(13,579)	24,404
Net cash provided by operating activities	154,638	247,065	334,438
Cash flows from investing activities:
Purchases of investment securities available for sale	(412,799)	(192,349)	(469,789)
Proceeds from sales of investment securities available for sale	191,733	136,403	14,777
Maturities and payments on investment securities available for sale	74,531	85,077	208,377
Purchases of equity securities	(286)	(511)	(260)
Proceeds from sales of equity securities	5,148	0	0
Net decrease (increase) in loans	112,496	(1,177,598)	(258,401)
Purchases of premises and equipment	(8,731)	(3,470)	(2,718)
Proceeds from sale of premises and equipment	104	175	647
Purchases of nonmarketable equity securities	(239,597)	(24,787)	0
Proceeds from redemptions of nonmarketable equity securities	242,377	14,927	20,255
Proceeds from sales of other real estate owned	7,547	1,453	9,210
(Purchases of) proceeds from company-owned life insurance, net	(48,603)	1,518	2,122
Net cash acquired (paid) in acquisitions	0	60,275	(2,715)
Net cash used in investing activities	(76,080)	(1,098,887)	(478,495)
Cash flows from financing activities:
Net (decrease) increase in deposits	(55,123)	174,210	1,009,632
Net (decrease) increase in short-term borrowings	(7,446)	(34,492)	7,846
Proceeds from FHLB borrowings	23,288,000	3,540,000	500,000
Payments made on FHLB borrowings and other borrowings	(23,272,000)	(3,390,171)	(977,536)
FHLB advances prepayment fees	0	0	8,536
Payments made on subordinated debt	(5,845)	(40,000)	(31,075)
Proceeds from issuance of preferred stock	0	110,548	0
Cash dividends paid on preferred stock	(8,913)	(3,169)	0
Cash dividends paid on common stock	(26,573)	(25,923)	(25,172)
Common stock repurchased	(17,898)	(1,109)	(11,692)
Proceeds from issuance of common stock under employee benefit plans	1,670	2,188	2,249
Net cash (used in) provided by financing activities	(104,128)	332,082	482,788
Net (decrease) increase in cash and cash equivalents	(25,570)	(519,740)	338,731
Cash and cash equivalents:
Beginning of period	160,631	680,371	341,640
End of period	$ 135,061	$ 160,631	$ 680,371