CONSOLIDATED STATEMENTS OF CASH FLOWS (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Operating activities:
Net income	$ 40,872	$ 5,798
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation	3,280	3,304
Amortization of intangible assets	3,576	3,667
Net amortization on securities, loans and borrowings	2,195	508
Stock-based compensation	2,378	2,272
Gain on debt extinguishment	0	(242)
Provision for credit losses	6,148	3,500
Amortization of mortgage servicing rights	188	233
Loss on sales of investment securities	0	52,329
Unrealized gain on equity securities	(16)	0
Income from bank-owned life insurance policies	(613)	(587)
Net gain on sale of assets	(873)	(399)
Change in other assets and liabilities	22,758	6,991
Net cash provided by operating activities	79,893	77,374
Investing activities:
Proceeds from maturities, calls, and paydowns of available-for-sale investment securities	16,177	20,543
Proceeds from maturities, calls, and paydowns of held-to-maturity investment securities	498	10
Proceeds from maturities and redemptions of equity and other investment securities, net	2,671	32,148
Proceeds from sales of available-for-sale investment securities	0	733,789
Purchases of held-to-maturity investment securities	(38,448)	(3,310)
Purchases of equity and other securities	(287)	(3,319)
Net increase in loans	(187,949)	(179,292)
Cash paid for acquisitions	(5,995)	(2,061)
Proceeds from sales of premises, equipment and other assets	1,216	1,634
Purchases of premises and equipment	(2,559)	(4,070)
Net cash (used in) provided by investing activities	(214,676)	596,072
Financing activities:
Net increase in deposits	423,901	98,364
Net decrease in overnight borrowings	(53,000)	(710,000)
Net decrease in securities sold under agreement to repurchase, short-term	(17,354)	(42,045)
Payments on and maturities of other Federal Home Loan Bank borrowings	(12,511)	(2,215)
Redemption of subordinated notes payable	0	(3,000)
Proceeds from the issuance of common stock	956	513
Purchases of treasury stock	(34,517)	(10,966)
Increase in deferred compensation arrangements	0	60
Cash dividends paid	(24,028)	(23,708)
Withholding taxes paid on share-based compensation	(1,245)	(1,047)
Net cash provided by (used in) financing activities	282,202	(694,044)
Change in cash and cash equivalents	147,419	(20,598)
Cash and cash equivalents at beginning of period	190,962	209,896
Cash and cash equivalents at end of period	338,381	189,298
Supplemental disclosures of cash flow information:
Cash paid for interest	44,997	14,815
Cash paid for income taxes	3,362	1,065
Supplemental disclosures of noncash financing and investing activities:
Dividends declared and unpaid	23,887	23,778
Transfers from loans to other real estate	693	18
Transfers from premises and equipment, net to other assets	0	1,443
Acquisitions:
Fair value of assets acquired, excluding acquired cash and intangibles	32	32
Fair value of liabilities assumed	999	9
Contingent consideration in exchange for acquired assets	$ 3,066	$ 0