Consolidated Statements of Cash Flows (Unaudited) - USD ($)	9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023
Operating activities
Net income	$ 150,710,000	$ 116,554,000
Adjustments to reconcile net income to net cash provided by operating activities:
Provision for credit losses	6,673,000	13,075,000
Depreciation, amortization and accretion	23,780,000	26,723,000
Deferred income tax expense (benefit)	2,494,000	(1,231,000)
Proceeds from sale of MSR	23,011,000	0
Gain on sale of MSR	(3,472,000)	0
Gain on sale of insurance agency	(53,349,000)	0
Funding of mortgage loans held for sale	(1,053,190,000)	(1,057,277,000)
Proceeds from sales of mortgage loans held for sale	954,133,000	934,761,000
Gains on sales of mortgage loans held for sale	(14,233,000)	(12,639,000)
Losses on sales of securities	0	22,438,000
Debt prepayment benefit	(56,000)	0
Losses on sales of premises and equipment	11,000	8,000
Stock-based compensation expense	10,639,000	10,264,000
Increase in other assets	(8,108,000)	(30,741,000)
(Decrease) increase in other liabilities	(1,712,000)	26,189,000
Net cash provided by operating activities	37,331,000	48,124,000
Investing activities
Purchases of securities available for sale	(60,656,000)	(9,646,000)
Proceeds from sales of securities available for sale	177,185,000	488,981,000
Proceeds from call/maturities of securities available for sale	66,310,000	124,150,000
Proceeds from call/maturities of securities held to maturity	76,170,000	83,945,000
Net increase in loans	(283,266,000)	(607,335,000)
Purchases of premises and equipment	(10,408,000)	(16,394,000)
Proceeds from sales of premises and equipment	339,000	0
Net cash received from sale of insurance agency	55,333,000	0
Net change in FHLB stock	2,443,000	20,794,000
Proceeds from sales of other assets	1,466,000	2,833,000
Other, net	656,000	1,844,000
Net cash provided by investing activities	25,572,000	89,172,000
Financing activities
Net decrease in noninterest-bearing deposits	(53,874,000)	(824,559,000)
Net increase in interest-bearing deposits	486,840,000	1,494,703,000
Net decrease in short-term borrowings	(198,845,000)	(604,570,000)
Repayment of long-term debt	(245,000)	0
Cash paid for dividends	(39,510,000)	(37,706,000)
Proceeds from equity offering	217,000,000	0
Net cash provided by financing activities	411,366,000	27,868,000
Net increase in cash and cash equivalents	474,269,000	165,164,000
Cash and cash equivalents at beginning of period	801,351,000	575,992,000
Cash and cash equivalents at end of period	1,275,620,000	741,156,000
Supplemental disclosures
Cash paid for interest	286,930,000	153,732,000
Cash paid for income taxes	27,412,000	30,922,000
Noncash transactions:
Transfers of loans to other real estate owned	3,286,000	10,073,000
Recognition of operating right-of-use assets	2,503,000	3,077,000
Recognition of operating lease liabilities	$ 2,503,000	$ 3,077,000