Loans - Nonaccrual Loans and Loans Past Due over 89 Days Still Accruing Interest by Class of Loans (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Financing Receivable, Past Due [Line Items]
Nonaccrual	$ 19,420	$ 30,359
Nonaccrual With No Allowance for Credit Loss	10,593	16,930
Loans Past Due over 89 Days Still Accruing	168	325
Farmland
Financing Receivable, Past Due [Line Items]
Nonaccrual	965	1,844
Nonaccrual With No Allowance for Credit Loss	965	633
Loans Past Due over 89 Days Still Accruing	0	0
Owner-occupied, nonfarm nonresidential properties
Financing Receivable, Past Due [Line Items]
Nonaccrual	850	1,781
Nonaccrual With No Allowance for Credit Loss	762	967
Loans Past Due over 89 Days Still Accruing	0	0
Commercial and Industrial
Financing Receivable, Past Due [Line Items]
Nonaccrual	7,060	6,657
Nonaccrual With No Allowance for Credit Loss	1,653	959
Loans Past Due over 89 Days Still Accruing	8	0
Other construction loans and all land development and other land loans
Financing Receivable, Past Due [Line Items]
Nonaccrual	516	2,349
Nonaccrual With No Allowance for Credit Loss	77	77
Loans Past Due over 89 Days Still Accruing	0	0
Multifamily (5 or more) residential properties
Financing Receivable, Past Due [Line Items]
Nonaccrual	1,270	288
Nonaccrual With No Allowance for Credit Loss	5	0
Loans Past Due over 89 Days Still Accruing	0	0
Non-owner occupied, nonfarm nonresidential properties
Financing Receivable, Past Due [Line Items]
Nonaccrual	3,771	11,932
Nonaccrual With No Allowance for Credit Loss	2,143	9,466
Loans Past Due over 89 Days Still Accruing	0	0
Home equity lines of credit
Financing Receivable, Past Due [Line Items]
Nonaccrual	824	685
Nonaccrual With No Allowance for Credit Loss	824	685
Loans Past Due over 89 Days Still Accruing	0	0
Residential Mortgages secured by first liens
Financing Receivable, Past Due [Line Items]
Nonaccrual	3,410	4,175
Nonaccrual With No Allowance for Credit Loss	3,410	3,495
Loans Past Due over 89 Days Still Accruing	137	283
Residential Mortgages secured by junior liens
Financing Receivable, Past Due [Line Items]
Nonaccrual	147	114
Nonaccrual With No Allowance for Credit Loss	147	114
Loans Past Due over 89 Days Still Accruing	0	0
Other revolving credit plans
Financing Receivable, Past Due [Line Items]
Nonaccrual	13	6
Nonaccrual With No Allowance for Credit Loss	13	6
Loans Past Due over 89 Days Still Accruing	0	0
Automobile
Financing Receivable, Past Due [Line Items]
Nonaccrual	36	32
Nonaccrual With No Allowance for Credit Loss	36	32
Loans Past Due over 89 Days Still Accruing	0	0
Other consumer
Financing Receivable, Past Due [Line Items]
Nonaccrual	558	496
Nonaccrual With No Allowance for Credit Loss	558	496
Loans Past Due over 89 Days Still Accruing	0	8
Credit cards
Financing Receivable, Past Due [Line Items]
Nonaccrual	0	0
Nonaccrual With No Allowance for Credit Loss	0	0
Loans Past Due over 89 Days Still Accruing	$ 23	$ 34