Consolidated Statements of Income and Comprehensive Income (unaudited) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024
Interest income
Interest and fees on loans	$ 321,457	$ 325,622	$ 941,518	$ 946,679
Interest on taxable securities	23,253	15,555	62,441	45,595
Interest on nontaxable securities	343	336	1,006	1,001
Interest on deposits in other banks and federal funds sold	9,993	13,633	31,497	38,646
Total interest income	355,046	355,146	1,036,462	1,031,921
Interest expense
Interest on deposits	106,851	129,698	318,862	369,117
Interest on other borrowings	10,231	11,388	25,984	35,435
Total interest expense	117,082	141,086	344,846	404,552
Net interest income	237,964	214,060	691,616	627,369
Provision for loan losses	11,176	6,313	30,805	57,184
Provision for unfunded commitments	11,446	(204)	16,484	(11,196)
Provision for other credit losses	8	(2)	5	(3)
Provision for credit losses	22,630	6,107	47,294	45,985
Net interest income after provision for credit losses	215,334	207,953	644,322	581,384
Noninterest income
Service charges on deposit accounts	13,931	12,918	40,557	37,349
Mortgage banking activity	40,666	37,947	115,141	123,776
Other service charges, commissions and fees	1,124	1,163	3,391	3,576
Net gain (loss) on securities	1,581	(8)	1,621	12,320
Equipment finance activity	8,858	5,398	22,128	15,717
Other noninterest income	10,114	12,291	26,370	31,560
Total noninterest income	76,274	69,709	209,208	224,298
Noninterest expense
Salaries and employee benefits	90,948	88,700	266,871	259,831
Occupancy and equipment	11,524	11,716	33,602	37,160
Data processing and communications expenses	16,058	15,221	46,279	45,068
Credit resolution-related expenses	770	(110)	2,192	1,216
Advertising and marketing	3,377	3,959	10,005	9,882
Amortization of intangible assets	3,879	4,180	12,058	13,009
Loan servicing expense	8,142	8,626	23,862	27,857
Other noninterest expenses	19,868	19,485	65,991	61,822
Total noninterest expense	154,566	151,777	460,860	455,845
Income before income tax expense	137,042	125,885	392,670	349,837
Income tax expense	31,013	26,673	88,872	85,528
Net income	106,029	99,212	303,798	264,309
Other comprehensive income
Net unrealized holding gains arising during period on debt securities available-for-sale, net of tax expense of $3,988, $7,427, $11,600 and $6,710	12,145	22,296	35,378	20,215
Reclassification adjustment for gains on debt securities included in earnings, net of tax expense of $28, $0, $28 and $0	(88)	0	(88)	0
Total other comprehensive income	12,057	22,296	35,290	20,215
Comprehensive income	$ 118,086	$ 121,508	$ 339,088	$ 284,524
Basic earnings per common share (in dollars per share)	$ 1.55	$ 1.44	$ 4.43	$ 3.84
Diluted earnings per common share (in dollars per share)	$ 1.54	$ 1.44	$ 4.41	$ 3.83
Weighted average common shares outstanding
Basic (in shares)	68,401,737	68,798,093	68,592,529	68,811,727
Diluted (in shares)	68,665,669	69,066,298	68,830,787	69,031,666