Loans and Allowance for Credit Losses - Schedule of Amounts Recognized in Balance Sheet (Details) - USD ($) $ in Thousands	Sep. 30, 2026	Jun. 30, 2026	Dec. 31, 2025	Sep. 30, 2025	Jun. 30, 2025	Dec. 31, 2024
Accounts Notes And Loans Receivable [Line Items]
Total	$ 5,493,503		$ 4,394,751
Allowance for credit losses	(54,418)	$ (53,591)	(43,949)	$ (42,563)	$ (40,035)	$ (40,304)
Loans, net	5,439,085		4,350,802
Real Estate \| Non-Farm Non-Residential Owner Occupied
Accounts Notes And Loans Receivable [Line Items]
Total	609,699		434,715
Real Estate \| Non-Farm Non-Residential Non-Owner Occupied
Accounts Notes And Loans Receivable [Line Items]
Total	988,249		710,401
Real Estate \| Residential
Accounts Notes And Loans Receivable [Line Items]
Total	514,474		333,419
Real Estate \| Construction, Development & Other
Accounts Notes And Loans Receivable [Line Items]
Total	888,908		823,353
Real Estate \| Farmland
Accounts Notes And Loans Receivable [Line Items]
Total	32,841		26,485
Commercial & Industrial
Accounts Notes And Loans Receivable [Line Items]
Total	2,368,844		1,906,616
Allowance for credit losses	(32,626)	(32,481)	(26,673)	(19,497)	(18,632)	(15,370)
Consumer
Accounts Notes And Loans Receivable [Line Items]
Total	1,715		1,576
Allowance for credit losses	(9)	(9)	(6)	(6)	(5)	(10)
Municipal and Other
Accounts Notes And Loans Receivable [Line Items]
Total	88,773		158,186
Allowance for credit losses	$ (676)	$ (869)	$ (1,011)	$ (885)	$ (748)	$ (520)