Consolidated Statements of Income - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2026	Mar. 31, 2025
Interest income:
Loans	$ 176,076	$ 176,274
Investment securities	67,983	53,405
Federal funds sold and securities purchased under agreements to resell	13,995	10,530
Total interest income	258,054	240,209
Interest expense:
Deposits	43,425	43,730
Federal funds purchased and customer repurchase agreements	6,012	7,206
Total interest expense	49,437	50,936
Net interest income	208,617	189,273
Provision for credit losses	3,146	2,920
Net interest income after provision for credit losses	205,471	186,353
Other income:
Mortgage banking revenues	9,536	8,727
Investment securities gains, net	0	109
Other income	2,526	855
Total other income	65,088	58,788
Other expenses:
Salaries and employee benefits	76,039	71,247
Net occupancy and equipment	12,166	11,847
Computer software and maintenance	5,977	6,056
Marketing and business development	4,556	4,959
Legal and professional fees	6,065	4,878
Bankcard processing, rewards and related costs	7,753	7,022
Other expenses	14,060	16,252
Total other expenses	126,616	122,261
Income before income taxes	143,943	122,880
Income taxes	32,855	28,082
Net income	$ 111,088	$ 94,798
Net income per common share - basic (in dollars per share)	$ 0.46	$ 0.43
Net income per common share - diluted (in dollars per share)	$ 0.46	$ 0.43
Service charges and commissions
Other income:
Other income revenues	$ 14,413	$ 13,944
Payment services revenue
Other income:
Other income revenues	16,370	15,976
Brokerage services
Other income:
Other income revenues	7,936	6,714
Fees for fiduciary services
Other income:
Other income revenues	$ 14,307	$ 12,463