Note 3 - Loans - Impaired Loan Balances by Portfolio Segment (Details) - USD ($) $ in Thousands	9 Months Ended	12 Months Ended
Sep. 30, 2022	Dec. 31, 2021
Recorded investment, with no related allowance recorded	$ 4,471	$ 2,218
Unpaid principal balance, with no related allowance recorded	4,479	2,226
Average recorded investment, with no related allowance recorded	3,312	2,404
Interest income recognized, with no related allowance recorded	129	66
Recorded investment, with a related allowance recorded	378	14
Unpaid principal balance, with a related allowance recorded	374	7
Related allowance	217	7
Average recorded investment, with a related allowance recorded	273	116
Interest income recognized, with a related allowance recorded		3
Recorded investment	4,849	2,232
Unpaid principal balance	4,853	2,233
Average recorded investment	3,585	2,520
Interest income recognized	129	69
Commercial Portfolio Segment [Member]
Recorded investment, with no related allowance recorded	0	0
Unpaid principal balance, with no related allowance recorded	0	0
Average recorded investment, with no related allowance recorded	0	4
Interest income recognized, with no related allowance recorded	0	0
Recorded investment, with a related allowance recorded	283	14
Unpaid principal balance, with a related allowance recorded	279	7
Related allowance	169	7
Average recorded investment, with a related allowance recorded	174	25
Interest income recognized, with a related allowance recorded	0	1
Recorded investment	283	14
Unpaid principal balance	279	7
Average recorded investment	174	29
Interest income recognized	0	1
Commercial Real Estate Portfolio Segment [Member] \| Construction and Land Development [Member]
Recorded investment, with no related allowance recorded	0	0
Unpaid principal balance, with no related allowance recorded	0	0
Average recorded investment, with no related allowance recorded	0	0
Interest income recognized, with no related allowance recorded	0	0
Recorded investment, with a related allowance recorded	0	0
Unpaid principal balance, with a related allowance recorded	0	0
Related allowance	0
Average recorded investment, with a related allowance recorded	0	0
Interest income recognized, with a related allowance recorded	0	0
Recorded investment	0	0
Unpaid principal balance	0	0
Average recorded investment	0	0
Interest income recognized	0	0
Commercial Real Estate Portfolio Segment [Member] \| Owner Occupied Commercial Real Estate [Member]
Recorded investment, with no related allowance recorded	2,421	8
Unpaid principal balance, with no related allowance recorded	2,420	5
Average recorded investment, with no related allowance recorded	1,212	71
Interest income recognized, with no related allowance recorded	81	1
Recorded investment, with a related allowance recorded	0	0
Unpaid principal balance, with a related allowance recorded	0	0
Related allowance	0
Average recorded investment, with a related allowance recorded	0	0
Interest income recognized, with a related allowance recorded	0	0
Recorded investment	2,421	8
Unpaid principal balance	2,420	5
Average recorded investment	1,212	71
Interest income recognized	81	1
Commercial Real Estate Portfolio Segment [Member] \| Non-owner Occupied Commercial Real Estate [Member]
Recorded investment, with no related allowance recorded	1,068	1,185
Unpaid principal balance, with no related allowance recorded	1,069	1,186
Average recorded investment, with no related allowance recorded	1,143	1,107
Interest income recognized, with no related allowance recorded	31	23
Recorded investment, with a related allowance recorded	0	0
Unpaid principal balance, with a related allowance recorded	0	0
Related allowance	0
Average recorded investment, with a related allowance recorded	0	30
Interest income recognized, with a related allowance recorded	0	0
Recorded investment	1,068	1,185
Unpaid principal balance	1,069	1,186
Average recorded investment	1,143	1,137
Interest income recognized	31	23
Residential Portfolio Segment [Member] \| Residential [Member]
Recorded investment, with no related allowance recorded	817	1,021
Unpaid principal balance, with no related allowance recorded	825	1,031
Average recorded investment, with no related allowance recorded	881	1,217
Interest income recognized, with no related allowance recorded	17	41
Recorded investment, with a related allowance recorded	0	0
Unpaid principal balance, with a related allowance recorded	0	0
Related allowance	0	0
Average recorded investment, with a related allowance recorded	51	61
Interest income recognized, with a related allowance recorded	0	2
Recorded investment	817	1,021
Unpaid principal balance	825	1,031
Average recorded investment	932	1,278
Interest income recognized	17	43
Residential Portfolio Segment [Member] \| Home Equity Line of Credit [Member]
Recorded investment, with no related allowance recorded	165	4
Unpaid principal balance, with no related allowance recorded	165	4
Average recorded investment, with no related allowance recorded	76	5
Interest income recognized, with no related allowance recorded	0	1
Recorded investment, with a related allowance recorded	0	0
Unpaid principal balance, with a related allowance recorded	0	0
Related allowance	0
Average recorded investment, with a related allowance recorded	0	0
Interest income recognized, with a related allowance recorded	0	0
Recorded investment	165	4
Unpaid principal balance	165	4
Average recorded investment	76	5
Interest income recognized	0	1
Consumer Portfolio Segment [Member]
Recorded investment, with no related allowance recorded	0	0
Unpaid principal balance, with no related allowance recorded	0	0
Average recorded investment, with no related allowance recorded	0	0
Interest income recognized, with no related allowance recorded	0	0
Recorded investment, with a related allowance recorded	95	0
Unpaid principal balance, with a related allowance recorded	95	0
Related allowance	48
Average recorded investment, with a related allowance recorded	48	0
Interest income recognized, with a related allowance recorded	0	0
Recorded investment	95	0
Unpaid principal balance	95	0
Average recorded investment	48	0
Interest income recognized	$ 0	$ 0

Average amount of investment of impaired financing receivables with related allowance for credit losses and without a related allowance for credit losses.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 15
-Subparagraph (c)(1)
-URI https://asc.fasb.org/extlink&oid=123577603&loc=d3e5212-111524

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
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