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Loans (Details 2) - USD ($) $ in Thousands	3 Months Ended		12 Months Ended
	Mar. 31, 2021	Mar. 31, 2020	Dec. 31, 2020	Dec. 31, 2019
Financing Receivable, Past Due [Line Items]
Beginning balance December 31, 2019	$ 10,389	$ 6,627	$ 6,627
Charge-offs	(25)	(23)	(110)
Recoveries	22	15	209
Provisions	177	1,075	3,663
Ending balance December 31, 2020	10,563	7,694	10,389
Individually evaluated for impairment	2	5	2
Collectively evaluated for impairment	10,561	7,689	10,387
Ending balance-total	869,066	749,529	844,157	$ 844,157
Individually evaluated for impairment	6,035	3,374	6,113
Collectively evaluated for impairment	863,031	746,155	838,044
Commercial, Financial And Agricultural Loan [Member]
Financing Receivable, Past Due [Line Items]
Beginning balance December 31, 2019	778	427	427
Charge-offs
Recoveries	1		130
Provisions	(21)	62	221
Ending balance December 31, 2020	758	489	778
Individually evaluated for impairment
Collectively evaluated for impairment	758	489	778
Ending balance-total	110,776	50,313	96,688	96,688
Individually evaluated for impairment
Collectively evaluated for impairment	110,776	50,313	96,688
Construction Loans [Member]
Financing Receivable, Past Due [Line Items]
Beginning balance December 31, 2019	145	111	111
Charge-offs			(2)
Recoveries			2
Provisions	(11)	37	34
Ending balance December 31, 2020	134	148	145
Individually evaluated for impairment
Collectively evaluated for impairment	134	148	145
Ending balance-total	104,065	83,547	95,282	95,282
Individually evaluated for impairment
Collectively evaluated for impairment	104,065	83,547	95,282
Residential Mortgage [Member]
Financing Receivable, Past Due [Line Items]
Beginning balance December 31, 2019	541	367	367
Charge-offs
Recoveries
Provisions	(61)	73	174
Ending balance December 31, 2020	480	440	541
Individually evaluated for impairment
Collectively evaluated for impairment	480	440	541
Ending balance-total	38,947	46,471	43,928	43,928
Individually evaluated for impairment	436	340	440
Collectively evaluated for impairment	38,511	46,131	43,488
Commercial Real Estate [Member]
Financing Receivable, Past Due [Line Items]
Beginning balance December 31, 2019	7,855	4,602	4,602
Charge-offs			(1)
Recoveries	4	6	23
Provisions	278	923	3,231
Ending balance December 31, 2020	8,137	5,531	7,855
Individually evaluated for impairment	2	5	2
Collectively evaluated for impairment	8,135	5,526	7,853
Ending balance-total	582,083	530,180	573,258	573,258
Individually evaluated for impairment	5,578	2,966	5,631
Collectively evaluated for impairment	576,505	527,214	567,627
Home Equity Line of Credit [Member]
Financing Receivable, Past Due [Line Items]
Beginning balance December 31, 2019	324	240	240
Charge-offs
Recoveries	1	1	2
Provisions	(16)	36	82
Ending balance December 31, 2020	309	277	324
Individually evaluated for impairment
Collectively evaluated for impairment	309	277	324
Ending balance-total	25,068	28,641	26,442	26,442
Individually evaluated for impairment	21	68	42
Collectively evaluated for impairment	25,047	28,573	26,400
Consumer Portfolio Segment [Member]
Financing Receivable, Past Due [Line Items]
Beginning balance December 31, 2019	125	97	97
Charge-offs	(25)	(23)	(107)
Recoveries	16	8	52
Provisions	8	30	83
Ending balance December 31, 2020	124	112	125
Individually evaluated for impairment
Collectively evaluated for impairment	124	112	125
Ending balance-total	8,127	10,377	8,559	$ 8,559
Individually evaluated for impairment
Collectively evaluated for impairment	8,127	10,377	8,559
Unallocated Financing Receivables [Member]
Financing Receivable, Past Due [Line Items]
Beginning balance December 31, 2019	621	783	783
Charge-offs
Recoveries
Provisions		(86)	(162)
Ending balance December 31, 2020	621	697	621
Individually evaluated for impairment
Collectively evaluated for impairment	621	697	621
Ending balance-total
Individually evaluated for impairment
Collectively evaluated for impairment

X

- Definition

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