Allowance for Credit Losses- Amortized cost basis of collateral dependent loans (Details) - USD ($) $ in Thousands	Sep. 30, 2025	Dec. 31, 2024
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans receivable	$ 2,610,814	$ 2,514,917
Real Estate
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans receivable	13,205	7,216
Collateral Other than Real Estate [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans receivable	6,319	6,601
Commercial | Commercial & Industrial
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans receivable	589,899	570,638
Commercial | Commercial & Industrial | Real Estate
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans receivable	3,868	1
Commercial | Commercial & Industrial | Collateral Other than Real Estate [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans receivable	5,413	5,978
Commercial | Farmland
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans receivable	125,082	129,934
Commercial | Farmland | Real Estate
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans receivable	48	996
Commercial | Non Farm, Non Residential
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans receivable	882,215	810,392
Commercial | Non Farm, Non Residential | Real Estate
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans receivable	4,543	4,111
Commercial | Agriculture
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans receivable	129,248	146,054
Commercial | Agriculture | Collateral Other than Real Estate [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans receivable	906	623
Commercial | All Other Commercial
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans receivable	555,618	539,333
Commercial | All Other Commercial | Real Estate
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans receivable	1,586	1,116
Residential | First Liens
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans receivable	459,375	450,232
Residential | First Liens | Real Estate
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans receivable	84	694
Residential | Home Equity
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans receivable	100,393	89,498
Residential | Junior Liens
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans receivable	70,465	64,712
Residential | Junior Liens | Real Estate
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans receivable		27
Residential | Multifamily
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans receivable	328,752	318,566
Residential | Multifamily | Real Estate
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans receivable	212	225
Residential | All Other Residential
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans receivable	38,930	44,378
Residential | All Other Residential | Real Estate
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans receivable	2,864	46
Consumer | Motor Vehicle
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans receivable	653,308	636,572
Consumer | All Other Consumer
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans receivable	$ 29,130	$ 31,486