Note 7 - Loans and the Allowance for Loan Losses - Impaired Loans (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2021	Dec. 31, 2020
Recorded investment, with an allowance recorded	$ 1,952	$ 3,593
Unpaid principal balance, with an allowance recorded	2,170	3,738
Related allowance	694	1,014
Average recorded investment, with an allowance recorded	2,284	2,855
Recorded investment, with no allowance recorded	11,869	9,964
Unpaid principal balance, with no allowance recorded	13,978	11,314
Average recorded investment, with no allowance recorded	11,038	11,037
Recorded investment	13,821	13,557
Unpaid principal balance	16,148	15,052
Average recorded investment	13,322	13,892
Commercial Real Estate Portfolio Segment [Member]
Related allowance	438	609
Recorded investment	5,514	5,517
Unpaid principal balance	6,047	5,653
Average recorded investment	5,099	5,224
Commercial Real Estate Portfolio Segment [Member] \| Construction and Land [Member]
Recorded investment, with an allowance recorded	68	27
Unpaid principal balance, with an allowance recorded	70	27
Related allowance	27	27
Average recorded investment, with an allowance recorded	27	2
Recorded investment, with no allowance recorded	1,290	897
Unpaid principal balance, with no allowance recorded	1,356	939
Average recorded investment, with no allowance recorded	1,050	520
Recorded investment	1,358	924
Unpaid principal balance	1,426	966
Average recorded investment	1,077	522
Commercial Real Estate Portfolio Segment [Member] \| Farmland [Member]
Recorded investment, with an allowance recorded	0	109
Unpaid principal balance, with an allowance recorded	0	112
Related allowance	0	93
Average recorded investment, with an allowance recorded	12	27
Recorded investment, with no allowance recorded	74	190
Unpaid principal balance, with no allowance recorded	82	197
Average recorded investment, with no allowance recorded	150	208
Recorded investment	74	299
Unpaid principal balance	82	309
Average recorded investment	162	235
Commercial Real Estate Portfolio Segment [Member] \| Real Estate Residential One- to Four-Family [Member]
Recorded investment, with an allowance recorded	314	337
Unpaid principal balance, with an allowance recorded	371	361
Related allowance	110	62
Average recorded investment, with an allowance recorded	325	361
Recorded investment, with no allowance recorded	3,313	2,620
Unpaid principal balance, with no allowance recorded	4,171	3,388
Average recorded investment, with no allowance recorded	2,835	3,091
Recorded investment	3,627	2,957
Unpaid principal balance	4,542	3,749
Average recorded investment	3,160	3,452
Commercial Real Estate Portfolio Segment [Member] \| Multi-family Residential [Member]
Recorded investment, with an allowance recorded	0	0
Unpaid principal balance, with an allowance recorded	0	0
Related allowance	0	0
Average recorded investment, with an allowance recorded	0	0
Recorded investment, with no allowance recorded	0	0
Unpaid principal balance, with no allowance recorded	0	0
Average recorded investment, with no allowance recorded	48	0
Recorded investment	0	0
Unpaid principal balance	0	0
Average recorded investment	48	0
Commercial Real Estate Portfolio Segment [Member] \| Nonfarm Nonresidential [Member]
Recorded investment, with an allowance recorded	784	457
Unpaid principal balance, with an allowance recorded	801	457
Related allowance	83	119
Average recorded investment, with an allowance recorded	623	652
Recorded investment, with no allowance recorded	2,175	3,068
Unpaid principal balance, with no allowance recorded	2,691	3,534
Average recorded investment, with no allowance recorded	2,889	3,325
Recorded investment	2,959	3,525
Unpaid principal balance	3,492	3,991
Average recorded investment	3,512	3,977
Commercial Portfolio Segment [Member]
Recorded investment, with an allowance recorded	695	2,530
Unpaid principal balance, with an allowance recorded	836	2,636
Related allowance	438	609
Average recorded investment, with an allowance recorded	1,217	1,655
Recorded investment, with no allowance recorded	4,819	2,987
Unpaid principal balance, with no allowance recorded	5,211	3,017
Average recorded investment, with no allowance recorded	3,882	3,569
Consumer Portfolio Segment [Member]
Recorded investment, with an allowance recorded	91	133
Unpaid principal balance, with an allowance recorded	92	145
Related allowance	36	104
Average recorded investment, with an allowance recorded	80	158
Recorded investment, with no allowance recorded	198	202
Unpaid principal balance, with no allowance recorded	467	239
Average recorded investment, with no allowance recorded	184	324
Recorded investment	289	335
Unpaid principal balance	559	384
Average recorded investment	$ 264	$ 482

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 http://asc.fasb.org/extlink&oid=123577603&loc=d3e5212-111524

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-URI http://asc.fasb.org/extlink&oid=123577603&loc=d3e5258-111524

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