Allowance for Credit Losses - Amortized cost basis of collateral dependent loans (Details) - USD ($) $ in Thousands	Jun. 30, 2023	Dec. 31, 2022
Real Estate
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans receivable	$ 12,162	$ 13,920
Other
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans receivable	1,140	156
Commercial
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans receivable	1,997,986	1,978,358
Commercial | Commercial & Industrial
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans receivable	657,319	675,323
Commercial | Commercial & Industrial | Real Estate
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans receivable	3,890	4,613
Commercial | Commercial & Industrial | Other
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans receivable		1
Commercial | Farmland
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans receivable	130,309	125,375
Commercial | Farmland | Real Estate
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans receivable	2,435	3,289
Commercial | Non Farm, Non Residential
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans receivable	407,091	386,542
Commercial | Non Farm, Non Residential | Real Estate
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans receivable	4,519	5,123
Commercial | Agriculture
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans receivable	112,913	135,500
Commercial | Agriculture | Real Estate
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans receivable	68
Commercial | Agriculture | Other
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans receivable	1,140	155
Commercial | All Other Commercial
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans receivable	504,403	475,520
Commercial | Multifamily
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans receivable	185,951	180,098
Residential | First Liens
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans receivable	356,973	346,972
Residential | Home Equity
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans receivable	63,451	64,119
Residential | Junior Liens
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans receivable	57,653	56,836
Residential | Multifamily | Real Estate
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans receivable	1,250	895
Residential | All Other Residential
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans receivable	25,171	25,439
Consumer | Motor Vehicle
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans receivable	592,794	555,302
Consumer | All Other Consumer
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans receivable	$ 32,648	$ 33,237