Consolidated Statements of Income and Comprehensive Income (unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Interest income
Interest and fees on loans	$ 303,393	$ 271,964
Interest on taxable securities	13,092	14,300
Interest on nontaxable securities	330	339
Interest on deposits in other banks and federal funds sold	12,637	9,113
Total interest income	329,452	295,716
Interest expense
Interest on deposits	118,174	53,182
Interest on other borrowings	9,890	30,882
Total interest expense	128,064	84,064
Net interest income	201,388	211,652
Provision for loan losses	25,523	49,376
Provision for unfunded commitments	(4,422)	346
Provision for other credit losses	4	7
Provision for credit losses	21,105	49,729
Net interest income after provision for credit losses	180,283	161,923
Noninterest income
Service charges on deposit accounts	11,759	10,936
Mortgage banking activity	39,430	31,392
Other service charges, commissions and fees	1,202	971
Net gain (loss) on securities	(7)	6
Other noninterest income	13,494	12,745
Total noninterest income	65,878	56,050
Noninterest expense
Salaries and employee benefits	82,930	80,910
Occupancy and equipment	12,885	12,986
Data processing and communications expenses	14,654	13,034
Credit resolution-related expenses	486	435
Advertising and marketing	2,545	3,532
Amortization of intangible assets	4,422	4,706
Loan servicing expense	9,439	8,331
Other noninterest expenses	21,350	15,487
Total noninterest expense	148,711	139,421
Income before income tax expense	97,450	78,552
Income tax expense	23,138	18,131
Net income	74,312	60,421
Other comprehensive income (loss)
Net unrealized holding gains (losses) arising during period on debt securities available-for-sale, net of tax expense (benefit) of $(1,399) and $3,719	(4,020)	10,926
Total other comprehensive income (loss)	(4,020)	10,926
Comprehensive income	$ 70,292	$ 71,347
Basic earnings per common share (in dollars per share)	$ 1.08	$ 0.87
Diluted earnings per common share (in dollars per share)	$ 1.08	$ 0.87
Weighted average common shares outstanding
Basic (in shares)	68,808,393	69,171,562
Diluted (in shares)	69,014,116	69,322,664