Loans and Allowance for Credit Losses - Balance of Each Major Product Type (Details) - USD ($) $ in Thousands	Dec. 31, 2023	Jan. 01, 2023	Dec. 31, 2022	Dec. 31, 2021
Financing Receivable, Past Due [Line Items]
Subtotal	$ 3,083,976		$ 2,793,466
Net deferred loan fees	(2,257)		(2,140)
Allowance for credit losses - loans	(34,431)	$ (28,389)	(28,389)	$ (23,243)
Loans held for investment, net of allowance for credit losses	3,047,288		2,762,937
Commercial
Financing Receivable, Past Due [Line Items]
Subtotal	2,685,419		2,394,674
Allowance for credit losses - loans	(29,015)		(19,216)	(12,869)
Commercial land and development
Financing Receivable, Past Due [Line Items]
Subtotal	15,551		7,477
Allowance for credit losses - loans	(178)		(54)	(50)
Commercial construction
Financing Receivable, Past Due [Line Items]
Subtotal	62,863		88,669
Allowance for credit losses - loans	(718)		(645)	(371)
Residential construction
Financing Receivable, Past Due [Line Items]
Subtotal	15,456		6,693
Allowance for credit losses - loans	(89)		(49)	(50)
Residential
Financing Receivable, Past Due [Line Items]
Subtotal	25,893		24,230
Allowance for credit losses - loans	(151)		(175)	(192)
Farmland
Financing Receivable, Past Due [Line Items]
Subtotal	51,669		52,478
Allowance for credit losses - loans	(399)		(644)	(645)
Secured
Financing Receivable, Past Due [Line Items]
Subtotal	165,109		165,186
Allowance for credit losses - loans	(3,314)		(7,098)	(6,859)
Unsecured
Financing Receivable, Past Due [Line Items]
Subtotal	23,850		25,431
Allowance for credit losses - loans	(189)		(116)	(207)
Consumer and other
Financing Receivable, Past Due [Line Items]
Subtotal	38,166		28,628
Allowance for credit losses - loans	$ (378)		$ (347)	$ (889)