Allowance for Credit Losses- Amortized cost basis of collateral dependent loans (Details) - USD ($) $ in Thousands	Sep. 30, 2026	Dec. 31, 2025
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans receivable	$ 2,867,329	$ 2,705,713
Real Estate
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans receivable	16,739	21,714
Collateral Other than Real Estate [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans receivable	3,746	6,495
Commercial \| Commercial & Industrial
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans receivable	602,483	646,742
Commercial \| Commercial & Industrial \| Real Estate
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans receivable		3,644
Commercial \| Commercial & Industrial \| Collateral Other than Real Estate [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans receivable	3,316	5,666
Commercial \| Farmland
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans receivable	118,668	125,856
Commercial \| Farmland \| Real Estate
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans receivable		48
Commercial \| Non Farm, Non Residential
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans receivable	1,088,161	910,336
Commercial \| Non Farm, Non Residential \| Real Estate
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans receivable	13,834	17,572
Commercial \| Agriculture
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans receivable	116,764	138,798
Commercial \| Agriculture \| Collateral Other than Real Estate [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans receivable	430	829
Commercial \| All Other Commercial
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans receivable	445,179	553,612
Commercial \| All Other Commercial \| Real Estate
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans receivable	143	143
Residential \| First Liens
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans receivable	551,482	448,389
Residential \| First Liens \| Real Estate
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans receivable	2,197	82
Residential \| Home Equity
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans receivable	142,821	106,787
Residential \| Junior Liens
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans receivable	83,447	72,553
Residential \| Junior Liens \| Real Estate
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans receivable	565
Residential \| Multifamily
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans receivable	496,074	330,369
Residential \| Multifamily \| Real Estate
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans receivable		205
Residential \| All Other Residential
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans receivable	35,045	28,857
Residential \| All Other Residential \| Real Estate
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans receivable		20
Consumer \| Motor Vehicle
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans receivable	696,805	659,666
Consumer \| All Other Consumer
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans receivable	$ 28,463	$ 28,469

Financing Receivable, Allowance for Credit Loss [Line Items]