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Note 4 - Loans Receivable - Activity in the Allowance for Loan Losses (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2022 | Dec. 31, 2021
Beginning balance | $ 6,715 | $ 7,751
Provision for (recovery of) loan losses | 1,828 | (1,240)
Loans charged off | (485) | (132)
Recoveries | 71 | 336
Total ending allowance balance | 8,129 | 6,715
Commercial Portfolio Segment [Member] |  |
Beginning balance | 1,652 | 1,536
Provision for (recovery of) loan losses | 1,032 | 119
Loans charged off | (156) | (93)
Recoveries | 20 | 90
Total ending allowance balance | 2,548 | 1,652
Consumer Portfolio Segment [Member] |  |
Beginning balance | 44 | 54
Provision for (recovery of) loan losses | 50 | 17
Loans charged off | (61) | (29)
Recoveries | 16 | 2
Total ending allowance balance | 49 | 44
One-to-Four Family Residential Real Estate [Member] | Real Estate Portfolio [Member] |  |
Beginning balance | 331 | 518
Provision for (recovery of) loan losses | 15 | (395)
Loans charged off | (76) | (3)
Recoveries | 11 | 211
Total ending allowance balance | 281 | 331
Multi-family Mortgage [Member] | Real Estate Portfolio [Member] |  |
Beginning balance | 3,377 | 4,062
Provision for (recovery of) loan losses | 616 | (718)
Recoveries | 20 | 33
Total ending allowance balance | 4,013 | 3,377
Nonresidential Real Estate [Member] | Real Estate Portfolio [Member] |  |
Beginning balance | 1,311 | 1,569
Provision for (recovery of) loan losses | 111 | (251)
Loans charged off | (192) | (7)
Recoveries | 4 |
Total ending allowance balance | 1,234 | 1,311
Construction and Land Loans [Member] |  |
Beginning balance | 0 | 12
Provision for (recovery of) loan losses | 4 | (12)
Loans charged off |  | 0
Recoveries |  | 0
Total ending allowance balance | $ 4 | $ 0

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- Definition Amount of recovery of loans and lease receivables which had previously been fully or partially written-off as bad debts. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (c)(4) -URI https://asc.fasb.org/extlink&oid=123577603&loc=SL6953423-111524 + Details
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- Definition Amount of loans and leases that have been written off from both loan receivables and allowance reserve for credit loss. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (c)(3) -URI https://asc.fasb.org/extlink&oid=123577603&loc=SL6953423-111524 + Details
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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 Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section S99 -Paragraph 4 -Subparagraph (SAB Topic 6.L.1) -URI https://asc.fasb.org/extlink&oid=122038336&loc=d3e74567-122707 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (g) -URI https://asc.fasb.org/extlink&oid=123577603&loc=SL6953423-111524 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (b)(1)(ii) -URI https://asc.fasb.org/extlink&oid=121614798&loc=d3e15032-111544 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (c)(1) -URI https://asc.fasb.org/extlink&oid=123577603&loc=SL6953423-111524 + Details
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- Definition Amount of expense related to estimated loss from loan and lease transactions. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (a) -URI https://asc.fasb.org/extlink&oid=126954810&loc=d3e3602-108585 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 220 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-04.11) -URI https://asc.fasb.org/extlink&oid=120399700&loc=SL114874048-224260 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (c)(2) -URI https://asc.fasb.org/extlink&oid=123577603&loc=SL6953423-111524 + Details
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