Loans and Allowance for Credit Losses - Summary of Allowance for Credit Losses on Loans by Portfolio Segment (Details) - USD ($) $ in Thousands	Mar. 31, 2023	Jan. 01, 2023	Dec. 31, 2022	Mar. 31, 2022	Dec. 31, 2021
Financing Receivable, Allowance for Credit Loss [Line Items]
Allowance for credit losses	$ 35,915	$ 30,351	$ 30,351	$ 23,312	$ 19,295
Modeled Expected Credit Losses
Financing Receivable, Allowance for Credit Loss [Line Items]
Allowance for credit losses	21,945
Q-Factor and Other Qualitative Adjustments
Financing Receivable, Allowance for Credit Loss [Line Items]
Allowance for credit losses	12,169
Specific Allocations
Financing Receivable, Allowance for Credit Loss [Line Items]
Allowance for credit losses	1,801
Non-Farm Non-Residential Owner Occupied
Financing Receivable, Allowance for Credit Loss [Line Items]
Allowance for credit losses			3,773
Non-Farm Non-Residential Non-Owner Occupied
Financing Receivable, Allowance for Credit Loss [Line Items]
Allowance for credit losses			5,741
Residential
Financing Receivable, Allowance for Credit Loss [Line Items]
Allowance for credit losses			1,064
Construction, Development & Other
Financing Receivable, Allowance for Credit Loss [Line Items]
Allowance for credit losses			3,053
Farmland
Financing Receivable, Allowance for Credit Loss [Line Items]
Allowance for credit losses			82
Real Estate | Non-Farm Non-Residential Owner Occupied
Financing Receivable, Allowance for Credit Loss [Line Items]
Allowance for credit losses	5,276		3,773	4,087	3,456
Real Estate | Non-Farm Non-Residential Owner Occupied | Modeled Expected Credit Losses
Financing Receivable, Allowance for Credit Loss [Line Items]
Allowance for credit losses	3,576
Real Estate | Non-Farm Non-Residential Owner Occupied | Q-Factor and Other Qualitative Adjustments
Financing Receivable, Allowance for Credit Loss [Line Items]
Allowance for credit losses	1,700
Real Estate | Non-Farm Non-Residential Non-Owner Occupied
Financing Receivable, Allowance for Credit Loss [Line Items]
Allowance for credit losses	8,388		5,741	5,613	5,935
Real Estate | Non-Farm Non-Residential Non-Owner Occupied | Modeled Expected Credit Losses
Financing Receivable, Allowance for Credit Loss [Line Items]
Allowance for credit losses	6,598
Real Estate | Non-Farm Non-Residential Non-Owner Occupied | Q-Factor and Other Qualitative Adjustments
Financing Receivable, Allowance for Credit Loss [Line Items]
Allowance for credit losses	1,790
Real Estate | Residential
Financing Receivable, Allowance for Credit Loss [Line Items]
Allowance for credit losses	2,071		1,064	766	957
Real Estate | Residential | Modeled Expected Credit Losses
Financing Receivable, Allowance for Credit Loss [Line Items]
Allowance for credit losses	1,351
Real Estate | Residential | Q-Factor and Other Qualitative Adjustments
Financing Receivable, Allowance for Credit Loss [Line Items]
Allowance for credit losses	720
Real Estate | Construction, Development & Other
Financing Receivable, Allowance for Credit Loss [Line Items]
Allowance for credit losses	5,297		3,053	2,324	2,064
Real Estate | Construction, Development & Other | Modeled Expected Credit Losses
Financing Receivable, Allowance for Credit Loss [Line Items]
Allowance for credit losses	3,485
Real Estate | Construction, Development & Other | Q-Factor and Other Qualitative Adjustments
Financing Receivable, Allowance for Credit Loss [Line Items]
Allowance for credit losses	1,812
Real Estate | Farmland
Financing Receivable, Allowance for Credit Loss [Line Items]
Allowance for credit losses	93		82	44	45
Real Estate | Farmland | Modeled Expected Credit Losses
Financing Receivable, Allowance for Credit Loss [Line Items]
Allowance for credit losses	51
Real Estate | Farmland | Q-Factor and Other Qualitative Adjustments
Financing Receivable, Allowance for Credit Loss [Line Items]
Allowance for credit losses	42
Commercial & Industrial
Financing Receivable, Allowance for Credit Loss [Line Items]
Allowance for credit losses	14,490	16,269	16,269	10,173	6,500
Commercial & Industrial | Modeled Expected Credit Losses
Financing Receivable, Allowance for Credit Loss [Line Items]
Allowance for credit losses	6,391
Commercial & Industrial | Q-Factor and Other Qualitative Adjustments
Financing Receivable, Allowance for Credit Loss [Line Items]
Allowance for credit losses	6,298
Commercial & Industrial | Specific Allocations
Financing Receivable, Allowance for Credit Loss [Line Items]
Allowance for credit losses	1,801
Consumer
Financing Receivable, Allowance for Credit Loss [Line Items]
Allowance for credit losses	9	6	6	5	6
Consumer | Modeled Expected Credit Losses
Financing Receivable, Allowance for Credit Loss [Line Items]
Allowance for credit losses	3
Consumer | Q-Factor and Other Qualitative Adjustments
Financing Receivable, Allowance for Credit Loss [Line Items]
Allowance for credit losses	6
Municipal and Other
Financing Receivable, Allowance for Credit Loss [Line Items]
Allowance for credit losses	291	$ 363	$ 363	$ 300	$ 332
Municipal and Other | Modeled Expected Credit Losses
Financing Receivable, Allowance for Credit Loss [Line Items]
Allowance for credit losses	490
Municipal and Other | Q-Factor and Other Qualitative Adjustments
Financing Receivable, Allowance for Credit Loss [Line Items]
Allowance for credit losses	$ (199)