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Note 5 - Allowance for Loan Losses, Nonperforming Assets and Impaired Loans - Allowance for Loan Losses (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Balance	$ 6,863	$ 7,390	$ 7,925
Charge-offs	(720)	(920)	(689)
Recoveries	347	267	235
Provision for (recovery of) loan losses	1,991	126	(81)
Balance	8,481	6,863	7,390
Real Estate Construction Portfolio Segment[Member]
Balance	400	398	337
Provision for (recovery of) loan losses	103	2	61
Balance	503	400	398
Consumer Real Estate Portfolio Segment [Member]
Balance	1,895	2,049	2,027
Charge-offs	(85)	(192)	(38)
Recoveries	18		3
Provision for (recovery of) loan losses	337	38	57
Balance	2,165	1,895	2,049
Commercial Real Estate Portfolio Segment [Member]
Balance	2,559	2,798	3,044
Charge-offs	(15)	(150)
Recoveries	145	49	49
Provision for (recovery of) loan losses	1,164	(138)	(295)
Balance	3,853	2,559	2,798
Commercial Non Real Estate Segment [Member]
Balance	555	602	1,072
Charge-offs	(372)	(47)	(107)
Recoveries	9	1	22
Provision for (recovery of) loan losses	478	(1)	(385)
Balance	670	555	602
Public Sector and IDA Portfolio Segment[Member]
Balance	478	583	419
Provision for (recovery of) loan losses	(139)	(105)	164
Balance	339	478	583
Consumer Non Real Estate Portfolio Segment [Member]
Balance	650	750	707
Charge-offs	(248)	(531)	(544)
Recoveries	175	217	161
Provision for (recovery of) loan losses	(22)	214	426
Balance	555	650	750
Unallocated Financing Receivables [Member]
Balance	326	210	319
Provision for (recovery of) loan losses	70	116	(109)
Balance	$ 396	$ 326	$ 210

X

- Definition

Amount of increase in allowance for credit loss on financing receivable from recovery.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 326
-SubTopic 20
-Section 55
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Amount of writeoff of financing receivable, charged against allowance for credit loss.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 326
-SubTopic 20
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-Paragraph 13
-Subparagraph (d)
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- Definition

Amount of allowance to cover probable credit losses on loans and leases. Includes carryover of or adjustments to the allowance for loan losses in connection with business combinations. Excludes allowance for loans and leases covered under loss sharing agreements.

+ References

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Amount of expense related to estimated loss from loan and lease transactions.

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