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Loans and Allowance for Loan Losses - Summary of Impaired Loans (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2022	Dec. 31, 2021
Financing Receivable Impaired [Line Items]
Recorded Investment, With no related allowance recorded	$ 5,445	$ 5,735
Unpaid Principal Balance, With no related allowance recorded	5,445	5,768
Average Recorded Investment, With no related allowance recorded	5,524	5,848
Interest Income Recognized, With no related allowance recorded	15	82
Recorded Investment, With an allowance recorded	1,115	1,493
Unpaid Principal Balance, With an allowance recorded	1,115	1,495
Allocated Related Allowance, With an allowance recorded	6	7
Average Recorded Investment, With an allowance recorded	1,141	1,531
Interest Income Recognized, With an allowance recorded	16	72
Total impaired loans, Recorded Investment	6,560	7,228
Total impaired loans, Unpaid Principal Balance	6,560	7,263
Total impaired loans, Allocated Related Allowance	6	7
Total impaired loans, Average Recorded Investment	6,665	7,379
Total impaired loans, Interest Income Recognized	31	154
Commercial (Secured by Real Estate - Owner Occupied)
Financing Receivable Impaired [Line Items]
Recorded Investment, With no related allowance recorded	93	95
Unpaid Principal Balance, With no related allowance recorded	93	95
Average Recorded Investment, With no related allowance recorded	96	100
Interest Income Recognized, With no related allowance recorded	1	6
Commercial (Secured by Real Estate - Non-owner Occupied)
Financing Receivable Impaired [Line Items]
Recorded Investment, With no related allowance recorded	3,188	3,199
Unpaid Principal Balance, With no related allowance recorded	3,188	3,199
Average Recorded Investment, With no related allowance recorded	3,172	3,177
Interest Income Recognized, With no related allowance recorded	11	45
Recorded Investment, With an allowance recorded	186	188
Unpaid Principal Balance, With an allowance recorded	186	189
Allocated Related Allowance, With an allowance recorded	1	1
Average Recorded Investment, With an allowance recorded	190	192
Interest Income Recognized, With an allowance recorded	3	12
Commercial and Industrial
Financing Receivable Impaired [Line Items]
Recorded Investment, With no related allowance recorded	388	388
Unpaid Principal Balance, With no related allowance recorded	388	421
Average Recorded Investment, With no related allowance recorded	418	458
Recorded Investment, With an allowance recorded		365
Unpaid Principal Balance, With an allowance recorded		365
Allocated Related Allowance, With an allowance recorded		1
Average Recorded Investment, With an allowance recorded		379
Residential Mortgage
Financing Receivable Impaired [Line Items]
Recorded Investment, With no related allowance recorded	1,776	2,052
Unpaid Principal Balance, With no related allowance recorded	1,776	2,052
Average Recorded Investment, With no related allowance recorded	1,836	2,110
Interest Income Recognized, With no related allowance recorded	3	31
Recorded Investment, With an allowance recorded	929	940
Unpaid Principal Balance, With an allowance recorded	929	941
Allocated Related Allowance, With an allowance recorded	5	5
Average Recorded Investment, With an allowance recorded	951	960
Interest Income Recognized, With an allowance recorded	13	60
Consumer Installment
Financing Receivable Impaired [Line Items]
Recorded Investment, With no related allowance recorded		1
Unpaid Principal Balance, With no related allowance recorded		1
Average Recorded Investment, With no related allowance recorded	$ 2	$ 3

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