Allowance for Credit Losses - Amortized cost basis of collateral dependent loans (Details) - USD ($) $ in Thousands	Sep. 30, 2022	Dec. 31, 2021
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans receivable	$ 1,911,006	$ 1,853,035
Real Estate
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans receivable	15,678	28,506
Other
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans receivable	503	720
Commercial | Commercial & Industrial
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans receivable	679,684	694,944
Commercial | Commercial & Industrial | Real Estate
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans receivable	5,656	17,734
Commercial | Commercial & Industrial | Other
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans receivable	142	720
Commercial | Farmland
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans receivable	126,377	139,068
Commercial | Farmland | Real Estate
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans receivable	3,561	3,669
Commercial | Non Farm, Non Residential
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans receivable	359,398	360,558
Commercial | Non Farm, Non Residential | Real Estate
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans receivable	5,555	6,135
Commercial | Agriculture
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans receivable	118,934	140,233
Commercial | Agriculture | Other
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans receivable	361
Commercial | All Other Commercial
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans receivable	432,872	339,263
Residential | First Liens
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans receivable	331,489	341,507
Residential | First Liens | Real Estate
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans receivable		33
Residential | Home Equity
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans receivable	64,424	62,175
Residential | Junior Liens
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans receivable	56,623	50,516
Residential | Multifamily
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans receivable	193,741	178,969
Residential | Multifamily | Real Estate
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans receivable		935
Residential | All Other Residential
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans receivable	30,123	31,342
Residential | All Other Residential | Real Estate
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans receivable	906
Consumer | Motor Vehicle
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans receivable	536,312	440,503
Consumer | All Other Consumer
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans receivable	$ 33,933	$ 33,523