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Note 3 - Allowance for Loan Losses, Nonperforming Assets and Impaired Loans - Allowance for Loan Losses (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020	Dec. 31, 2020
Balance			$ 8,481	$ 6,863	$ 6,863
Charge-offs			(690)	(639)	(720)
Recoveries			245	219	347
Provision for (recovery of) loan losses	$ (392)	$ 154	(338)	1,985	1,991
Balance	7,698	8,428	7,698	8,428	8,481
Real Estate Construction Portfolio Segment[Member]
Balance			503	400	400
Provision for (recovery of) loan losses			(5)	24	103
Balance	498	424	498	424	503
Consumer Real Estate Portfolio Segment [Member]
Balance			2,165	1,895	1,895
Charge-offs			(13)	(62)	(85)
Recoveries			19		18
Provision for (recovery of) loan losses			(203)	311	337
Balance	1,968	2,162	1,968	2,162	2,165
Commercial Real Estate Portfolio Segment [Member]
Balance			3,853	2,559	2,559
Charge-offs			0	(15)
Recoveries			86	53	145
Provision for (recovery of) loan losses			(776)	1,047	1,164
Balance	3,163	3,644	3,163	3,644	3,853
Commercial Non Real Estate Segment [Member]
Balance			670	555	555
Charge-offs			(526)	(372)	(372)
Recoveries			31	6	9
Provision for (recovery of) loan losses			743	510	478
Balance	918	699	918	699	670
Public Sector and IDA Portfolio Segment[Member]
Balance			339	478	478
Provision for (recovery of) loan losses			(27)	53	(139)
Balance	312	531	312	531	339
Consumer Non Real Estate Portfolio Segment [Member]
Balance			555	650	650
Charge-offs			(151)	(190)	(248)
Recoveries			109	142	175
Provision for (recovery of) loan losses			(39)	(5)	(22)
Balance	474	597	474	597	555
Unallocated Financing Receivables [Member]
Balance			396	326	326
Provision for (recovery of) loan losses			(31)	45	70
Balance	$ 365	$ 371	$ 365	$ 371	$ 396

X

- Definition

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

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Amount of writeoff of financing receivable, charged against allowance for credit loss.

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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.

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