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Loans and Allowance for Loan Losses - Summary of Allowance for Loan Losses and Recorded Investment in Loans by Portfolio Segment and Based on Impairment Method (Details) - USD ($) $ in Thousands		3 Months Ended		12 Months Ended
		Mar. 31, 2022	Mar. 31, 2021	Dec. 31, 2021
Allowance for loan losses:
Beginning balance		$ 8,559	$ 6,361	$ 6,361
Provision		250	450	1,075
Charge-offs		(51)		(310)
Recoveries		48		1,433
Ending balance		8,806		8,559
Ending allowance attributable to loans:
Individually evaluated for impairment		6		7
Collectively evaluated for impairment		8,800		8,552
Ending balance		8,806		8,559
Loans:
Individually evaluated for impairment		6,560		7,228
Collectively evaluated for impairment		595,133		577,156
Total loans		601,693		584,384
Commercial (Secured by Real Estate - Owner Occupied)
Allowance for loan losses:
Beginning balance		2,701	1,913	1,913
Provision		(266)		(519)
Recoveries				1,307
Ending balance		2,435		2,701
Ending allowance attributable to loans:
Collectively evaluated for impairment		2,435		2,701
Ending balance		2,435		2,701
Loans:
Individually evaluated for impairment		93		95
Collectively evaluated for impairment		156,239		158,567
Total loans		156,332		158,662
Commercial (Secured by Real Estate - Non-owner Occupied)
Allowance for loan losses:
Beginning balance		1,980	1,171	1,171
Provision		240		809
Ending balance		2,220		1,980
Ending allowance attributable to loans:
Individually evaluated for impairment		1		1
Collectively evaluated for impairment		2,219		1,979
Ending balance		2,220		1,980
Loans:
Individually evaluated for impairment		3,374		3,387
Collectively evaluated for impairment		116,087		100,655
Total loans		119,461		104,042
Commercial and Industrial
Allowance for loan losses:
Beginning balance		2,242	1,320	1,320
Provision		33		1,119
Charge-offs		(26)		(234)
Recoveries		3		37
Ending balance		2,252		2,242
Ending allowance attributable to loans:
Individually evaluated for impairment				1
Collectively evaluated for impairment		2,252		2,241
Ending balance		2,252		2,242
Loans:
Individually evaluated for impairment		388		753
Collectively evaluated for impairment		154,986		152,082
Total loans		155,374		152,835
Paycheck Protection Program
Allowance for loan losses:
Beginning balance		0
Ending balance		0		0
Ending allowance attributable to loans:
Ending balance		0		0
Loans:
Collectively evaluated for impairment	[1]	7,078		17,883
Total loans	[1]	7,078		17,883
Construction, Land and Acquisition & Development
Allowance for loan losses:
Beginning balance		162	224	224
Provision		174		(62)
Ending balance		336		162
Ending allowance attributable to loans:
Collectively evaluated for impairment		336		162
Ending balance		336		162
Loans:
Collectively evaluated for impairment		27,138		16,317
Total loans		27,138		16,317
Residential Mortgage
Allowance for loan losses:
Beginning balance		502	970	970
Provision		(89)		(541)
Recoveries		38		73
Ending balance		451		502
Ending allowance attributable to loans:
Individually evaluated for impairment		5		5
Collectively evaluated for impairment		446		497
Ending balance		451		502
Loans:
Individually evaluated for impairment		2,705		2,992
Collectively evaluated for impairment		53,743		60,073
Total loans		56,448		63,065
Consumer Installment
Allowance for loan losses:
Beginning balance		969	719	719
Provision		147		310
Charge-offs		(25)		(76)
Recoveries		7		16
Ending balance		1,098		969
Ending allowance attributable to loans:
Collectively evaluated for impairment		1,098		969
Ending balance		1,098		969
Loans:
Individually evaluated for impairment				1
Collectively evaluated for impairment		79,862		71,579
Total loans		79,862		71,580
Unallocated
Allowance for loan losses:
Beginning balance		3	$ 44	44
Provision		11		(41)
Ending balance		14		3
Ending allowance attributable to loans:
Collectively evaluated for impairment		14		3
Ending balance		$ 14		$ 3
[1] Includes PPP loans that are fully guaranteed by the SBA; thus no allowance for loan losses has been allocated to these loans.

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