Allowance for Credit Losses - Aging of the recorded investment in loans by past due category and class (Details) - USD ($) $ in Thousands	Sep. 30, 2022	Dec. 31, 2021
Aging of recorded investment in loans by past due category and class of loans
Loans receivable	$ 1,911,006	$ 1,853,035
Financing Receivable Recorded Investment	2,976,351	2,823,969
30-59 Days Past Due
Aging of recorded investment in loans by past due category and class of loans
Financing Receivable Recorded Investment	15,727	15,178
60-89 Days Past Due
Aging of recorded investment in loans by past due category and class of loans
Financing Receivable Recorded Investment	3,703	2,833
90 Days and Greater Past Due
Aging of recorded investment in loans by past due category and class of loans
Financing Receivable Recorded Investment	3,806	3,479
Total Past Due
Aging of recorded investment in loans by past due category and class of loans
Financing Receivable Recorded Investment	23,236	21,490
Current
Aging of recorded investment in loans by past due category and class of loans
Financing Receivable Recorded Investment	2,953,115	2,802,479
Commercial | Commercial & Industrial
Aging of recorded investment in loans by past due category and class of loans
Loans receivable	679,684	694,944
Financing Receivable Recorded Investment	681,577	697,083
Commercial | Commercial & Industrial | 30-59 Days Past Due
Aging of recorded investment in loans by past due category and class of loans
Financing Receivable Recorded Investment	2,437	1,132
Commercial | Commercial & Industrial | 60-89 Days Past Due
Aging of recorded investment in loans by past due category and class of loans
Financing Receivable Recorded Investment	217	388
Commercial | Commercial & Industrial | 90 Days and Greater Past Due
Aging of recorded investment in loans by past due category and class of loans
Financing Receivable Recorded Investment	1,267	1,614
Commercial | Commercial & Industrial | Total Past Due
Aging of recorded investment in loans by past due category and class of loans
Financing Receivable Recorded Investment	3,921	3,134
Commercial | Commercial & Industrial | Current
Aging of recorded investment in loans by past due category and class of loans
Financing Receivable Recorded Investment	677,656	693,949
Commercial | Farmland
Aging of recorded investment in loans by past due category and class of loans
Loans receivable	126,377	139,068
Financing Receivable Recorded Investment	128,447	141,246
Commercial | Farmland | 30-59 Days Past Due
Aging of recorded investment in loans by past due category and class of loans
Financing Receivable Recorded Investment		57
Commercial | Farmland | 90 Days and Greater Past Due
Aging of recorded investment in loans by past due category and class of loans
Financing Receivable Recorded Investment	272
Commercial | Farmland | Total Past Due
Aging of recorded investment in loans by past due category and class of loans
Financing Receivable Recorded Investment	272	57
Commercial | Farmland | Current
Aging of recorded investment in loans by past due category and class of loans
Financing Receivable Recorded Investment	128,175	141,189
Commercial | Non Farm, Non Residential
Aging of recorded investment in loans by past due category and class of loans
Loans receivable	359,398	360,558
Financing Receivable Recorded Investment	360,054	361,236
Commercial | Non Farm, Non Residential | 30-59 Days Past Due
Aging of recorded investment in loans by past due category and class of loans
Financing Receivable Recorded Investment	312	62
Commercial | Non Farm, Non Residential | 60-89 Days Past Due
Aging of recorded investment in loans by past due category and class of loans
Financing Receivable Recorded Investment	80
Commercial | Non Farm, Non Residential | Total Past Due
Aging of recorded investment in loans by past due category and class of loans
Financing Receivable Recorded Investment	392	62
Commercial | Non Farm, Non Residential | Current
Aging of recorded investment in loans by past due category and class of loans
Financing Receivable Recorded Investment	359,662	361,174
Commercial | Agriculture
Aging of recorded investment in loans by past due category and class of loans
Loans receivable	118,934	140,233
Financing Receivable Recorded Investment	120,903	141,903
Commercial | Agriculture | 30-59 Days Past Due
Aging of recorded investment in loans by past due category and class of loans
Financing Receivable Recorded Investment		90
Commercial | Agriculture | 60-89 Days Past Due
Aging of recorded investment in loans by past due category and class of loans
Financing Receivable Recorded Investment		42
Commercial | Agriculture | 90 Days and Greater Past Due
Aging of recorded investment in loans by past due category and class of loans
Financing Receivable Recorded Investment		89
Commercial | Agriculture | Total Past Due
Aging of recorded investment in loans by past due category and class of loans
Financing Receivable Recorded Investment		221
Commercial | Agriculture | Current
Aging of recorded investment in loans by past due category and class of loans
Financing Receivable Recorded Investment	120,903	141,682
Commercial | All Other Commercial
Aging of recorded investment in loans by past due category and class of loans
Loans receivable	432,872	339,263
Financing Receivable Recorded Investment	434,725	340,466
Commercial | All Other Commercial | 30-59 Days Past Due
Aging of recorded investment in loans by past due category and class of loans
Financing Receivable Recorded Investment	301	390
Commercial | All Other Commercial | 90 Days and Greater Past Due
Aging of recorded investment in loans by past due category and class of loans
Financing Receivable Recorded Investment	30
Commercial | All Other Commercial | Total Past Due
Aging of recorded investment in loans by past due category and class of loans
Financing Receivable Recorded Investment	331	390
Commercial | All Other Commercial | Current
Aging of recorded investment in loans by past due category and class of loans
Financing Receivable Recorded Investment	434,394	340,076
Residential | First Liens
Aging of recorded investment in loans by past due category and class of loans
Loans receivable	331,489	341,507
Financing Receivable Recorded Investment	332,333	342,379
Residential | First Liens | 30-59 Days Past Due
Aging of recorded investment in loans by past due category and class of loans
Financing Receivable Recorded Investment	935	4,686
Residential | First Liens | 60-89 Days Past Due
Aging of recorded investment in loans by past due category and class of loans
Financing Receivable Recorded Investment	1,056	680
Residential | First Liens | 90 Days and Greater Past Due
Aging of recorded investment in loans by past due category and class of loans
Financing Receivable Recorded Investment	1,038	949
Residential | First Liens | Total Past Due
Aging of recorded investment in loans by past due category and class of loans
Financing Receivable Recorded Investment	3,029	6,315
Residential | First Liens | Current
Aging of recorded investment in loans by past due category and class of loans
Financing Receivable Recorded Investment	329,304	336,064
Residential | Home Equity
Aging of recorded investment in loans by past due category and class of loans
Loans receivable	64,424	62,175
Financing Receivable Recorded Investment	64,592	62,298
Residential | Home Equity | 30-59 Days Past Due
Aging of recorded investment in loans by past due category and class of loans
Financing Receivable Recorded Investment	616	131
Residential | Home Equity | 60-89 Days Past Due
Aging of recorded investment in loans by past due category and class of loans
Financing Receivable Recorded Investment	40	24
Residential | Home Equity | 90 Days and Greater Past Due
Aging of recorded investment in loans by past due category and class of loans
Financing Receivable Recorded Investment	102	58
Residential | Home Equity | Total Past Due
Aging of recorded investment in loans by past due category and class of loans
Financing Receivable Recorded Investment	758	213
Residential | Home Equity | Current
Aging of recorded investment in loans by past due category and class of loans
Financing Receivable Recorded Investment	63,834	62,085
Residential | Junior Liens
Aging of recorded investment in loans by past due category and class of loans
Loans receivable	56,623	50,516
Financing Receivable Recorded Investment	56,741	50,630
Residential | Junior Liens | 30-59 Days Past Due
Aging of recorded investment in loans by past due category and class of loans
Financing Receivable Recorded Investment	257	179
Residential | Junior Liens | 60-89 Days Past Due
Aging of recorded investment in loans by past due category and class of loans
Financing Receivable Recorded Investment	29	120
Residential | Junior Liens | 90 Days and Greater Past Due
Aging of recorded investment in loans by past due category and class of loans
Financing Receivable Recorded Investment	241	283
Residential | Junior Liens | Total Past Due
Aging of recorded investment in loans by past due category and class of loans
Financing Receivable Recorded Investment	527	582
Residential | Junior Liens | Current
Aging of recorded investment in loans by past due category and class of loans
Financing Receivable Recorded Investment	56,214	50,048
Residential | Multifamily
Aging of recorded investment in loans by past due category and class of loans
Loans receivable	193,741	178,969
Financing Receivable Recorded Investment	194,294	179,337
Residential | Multifamily | 30-59 Days Past Due
Aging of recorded investment in loans by past due category and class of loans
Financing Receivable Recorded Investment	467	342
Residential | Multifamily | 60-89 Days Past Due
Aging of recorded investment in loans by past due category and class of loans
Financing Receivable Recorded Investment	99	146
Residential | Multifamily | Total Past Due
Aging of recorded investment in loans by past due category and class of loans
Financing Receivable Recorded Investment	566	488
Residential | Multifamily | Current
Aging of recorded investment in loans by past due category and class of loans
Financing Receivable Recorded Investment	193,728	178,849
Residential | All Other Residential
Aging of recorded investment in loans by past due category and class of loans
Loans receivable	30,123	31,342
Financing Receivable Recorded Investment	30,207	31,418
Residential | All Other Residential | 30-59 Days Past Due
Aging of recorded investment in loans by past due category and class of loans
Financing Receivable Recorded Investment		284
Residential | All Other Residential | 60-89 Days Past Due
Aging of recorded investment in loans by past due category and class of loans
Financing Receivable Recorded Investment	38	291
Residential | All Other Residential | Total Past Due
Aging of recorded investment in loans by past due category and class of loans
Financing Receivable Recorded Investment	38	575
Residential | All Other Residential | Current
Aging of recorded investment in loans by past due category and class of loans
Financing Receivable Recorded Investment	30,169	30,843
Consumer | Motor Vehicle
Aging of recorded investment in loans by past due category and class of loans
Loans receivable	536,312	440,503
Financing Receivable Recorded Investment	538,433	442,319
Consumer | Motor Vehicle | 30-59 Days Past Due
Aging of recorded investment in loans by past due category and class of loans
Financing Receivable Recorded Investment	10,129	7,633
Consumer | Motor Vehicle | 60-89 Days Past Due
Aging of recorded investment in loans by past due category and class of loans
Financing Receivable Recorded Investment	2,088	1,105
Consumer | Motor Vehicle | 90 Days and Greater Past Due
Aging of recorded investment in loans by past due category and class of loans
Financing Receivable Recorded Investment	853	486
Consumer | Motor Vehicle | Total Past Due
Aging of recorded investment in loans by past due category and class of loans
Financing Receivable Recorded Investment	13,070	9,224
Consumer | Motor Vehicle | Current
Aging of recorded investment in loans by past due category and class of loans
Financing Receivable Recorded Investment	525,363	433,095
Consumer | All Other Consumer
Aging of recorded investment in loans by past due category and class of loans
Loans receivable	33,933	33,523
Financing Receivable Recorded Investment	34,045	33,654
Consumer | All Other Consumer | 30-59 Days Past Due
Aging of recorded investment in loans by past due category and class of loans
Financing Receivable Recorded Investment	273	192
Consumer | All Other Consumer | 60-89 Days Past Due
Aging of recorded investment in loans by past due category and class of loans
Financing Receivable Recorded Investment	56	37
Consumer | All Other Consumer | 90 Days and Greater Past Due
Aging of recorded investment in loans by past due category and class of loans
Financing Receivable Recorded Investment	3
Consumer | All Other Consumer | Total Past Due
Aging of recorded investment in loans by past due category and class of loans
Financing Receivable Recorded Investment	332	229
Consumer | All Other Consumer | Current
Aging of recorded investment in loans by past due category and class of loans
Financing Receivable Recorded Investment	$ 33,713	$ 33,425