Loans and Allowance for Loan and Lease Losses - Impaired Loans (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Impaired loans with no related allowance recorded, carrying amount	$ 2,525	$ 7,009
Impaired loans with no related allowance recorded, unpaid principal balance	2,525	7,009
Impaired loans, related allowances	67	74
Impaired loans with an allowance recorded, carrying amount	73	102
Impaired loans with an allowance recorded, unpaid principal balance	73	102
Impaired loans, carrying amount	2,598	7,111
Impaired loans, unpaid principal balance	2,598	7,111
Impaired loans, average recorded investment	3,809	3,533
Impaired loans, interest income recognized	241	46
Impaired loans, interest income received	181	47
Real Estate [Member] | Secured by 1-4 Family Residential Properties [Member]
Impaired loans with no related allowance recorded, carrying amount	630	885
Impaired loans with no related allowance recorded, unpaid principal balance	630	885
Impaired loans, related allowances	10	12
Impaired loans with an allowance recorded, carrying amount	16	18
Impaired loans with an allowance recorded, unpaid principal balance	16	18
Impaired loans, carrying amount	646	903
Impaired loans, unpaid principal balance	646	903
Impaired loans, average recorded investment	773	923
Impaired loans, interest income recognized	31	10
Impaired loans, interest income received	31	10
Real Estate [Member] | Secured By Non-farm Non residential Properties [Member]
Impaired loans with no related allowance recorded, carrying amount	1,051	5,594
Impaired loans with no related allowance recorded, unpaid principal balance	1,051	5,594
Impaired loans, carrying amount	1,051	5,594
Impaired loans, unpaid principal balance	1,051	5,594
Impaired loans, average recorded investment	2,377	2,467
Impaired loans, interest income recognized	140	28
Impaired loans, interest income received	108	28
Commercial and Industrial Loans [Member]
Impaired loans with no related allowance recorded, carrying amount	823	530
Impaired loans with no related allowance recorded, unpaid principal balance	823	530
Impaired loans, related allowances	57	61
Impaired loans with an allowance recorded, carrying amount	57	60
Impaired loans with an allowance recorded, unpaid principal balance	57	60
Impaired loans, carrying amount	880	590
Impaired loans, unpaid principal balance	880	590
Impaired loans, average recorded investment	637	118
Impaired loans, interest income recognized	61	7
Impaired loans, interest income received	40	7
Direct Consumer [Member]
Impaired loans with no related allowance recorded, carrying amount	21
Impaired loans with no related allowance recorded, unpaid principal balance	21
Impaired loans, related allowances		1
Impaired loans with an allowance recorded, carrying amount		24
Impaired loans with an allowance recorded, unpaid principal balance		24
Impaired loans, carrying amount	21	24
Impaired loans, unpaid principal balance	21	24
Impaired loans, average recorded investment	22	25
Impaired loans, interest income recognized	9	1
Impaired loans, interest income received	$ 2	$ 2