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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		9 Months Ended		12 Months Ended
		Sep. 30, 2021	Sep. 30, 2020	Dec. 31, 2020
Allowance for loan losses:
Beginning balance		$ 6,361	$ 4,134	$ 4,134
Provision		975	1,400	2,000
Charge-offs		(85)		(185)
Recoveries		380		412
Ending balance		7,631		6,361
Ending allowance attributable to loans:
Individually evaluated for impairment		53		51
Collectively evaluated for impairment		7,578		6,310
Ending balance		7,631		6,361
Loans:
Individually evaluated for impairment		7,709		7,274
Collectively evaluated for impairment		563,461		591,341
Total loans		571,170		598,615
Commercial (Secured by Real Estate)
Allowance for loan losses:
Beginning balance		3,084	1,661	1,661
Provision		316		1,207
Charge-offs				(30)
Recoveries		265		246
Ending balance		3,665		3,084
Ending allowance attributable to loans:
Individually evaluated for impairment				2
Collectively evaluated for impairment		3,665		3,082
Ending balance		3,665		3,084
Loans:
Individually evaluated for impairment		3,553		2,584
Collectively evaluated for impairment		203,465		175,987
Total loans		207,018		178,571
Commercial and Industrial
Allowance for loan losses:
Beginning balance		1,320	1,478	1,478
Provision		1,210		(194)
Charge-offs		(54)
Recoveries		37		36
Ending balance		2,513		1,320
Ending allowance attributable to loans:
Individually evaluated for impairment		45		35
Collectively evaluated for impairment		2,468		1,285
Ending balance		2,513		1,320
Loans:
Individually evaluated for impairment		933		1,085
Collectively evaluated for impairment		169,190		154,469
Total loans		170,123		155,554
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]	31,715		101,749
Total loans	[1]	31,715		101,749
Construction, Land and Acquisition & Development
Allowance for loan losses:
Beginning balance		224	153	153
Provision		(42)		71
Ending balance		182		224
Ending allowance attributable to loans:
Collectively evaluated for impairment		182		224
Ending balance		182		224
Loans:
Collectively evaluated for impairment		21,713		23,571
Total loans		21,713		23,571
Residential Mortgage
Allowance for loan losses:
Beginning balance		970	369	369
Provision		(555)		627
Charge-offs				(126)
Recoveries		73		100
Ending balance		488		970
Ending allowance attributable to loans:
Individually evaluated for impairment		8		14
Collectively evaluated for impairment		480		956
Ending balance		488		970
Loans:
Individually evaluated for impairment		3,221		3,597
Collectively evaluated for impairment		70,311		88,180
Total loans		73,532		91,777
Consumer Installment
Allowance for loan losses:
Beginning balance		719	466	466
Provision		69		252
Charge-offs		(31)		(29)
Recoveries		5		30
Ending balance		762		719
Ending allowance attributable to loans:
Collectively evaluated for impairment		762		719
Ending balance		762		719
Loans:
Individually evaluated for impairment		2		8
Collectively evaluated for impairment		67,067		47,385
Total loans		67,069		47,393
Unallocated
Allowance for loan losses:
Beginning balance		44	$ 7	7
Provision		(23)		37
Ending balance		21		44
Ending allowance attributable to loans:
Collectively evaluated for impairment		21		44
Ending balance		$ 21		$ 44
[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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Amount of recovery of loans and lease receivables which had previously been fully or partially written-off as bad debts.

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