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Note 4 - Allowance for Loan Losses - Impaired Loans and Related Allowances (Details) - USD ($) $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Mar. 31, 2021 | Mar. 31, 2020 | Dec. 31, 2020
Impaired loans, unpaid principal balance | $ 7,137 | $ 1,714 | $ 6,967
Impaired loans, recorded investment with no allowance | 996 | 1,299 | 896
Impaired loans, recorded investment with allowance | 5,818 | 223 | 5,818
Impaired loans, total recorded investment | 6,814 | 1,522 | 6,714
Impaired loans, related allowance | 2,188 | 11 | 2,223
Impaired loans, average recorded investment | 6,704 | 1,438 | 3,877
Impaired loans, interest income recognized | 1 | 1 | 187
Real Estate 1 [Member] | Construction and Land Development [Member] |  |  |
Impaired loans, unpaid principal balance | 323 | 439 | 325
Impaired loans, recorded investment with no allowance | 269 | 400 | 276
Impaired loans, recorded investment with allowance |  |  |
Impaired loans, total recorded investment | 269 | 400 | 276
Impaired loans, related allowance |  |  |
Impaired loans, average recorded investment | 273 | 367 | 344
Impaired loans, interest income recognized |  |  |
Real Estate 1 [Member] | Secured by Multi-family Residential Properties [Member] |  |  |
Impaired loans, unpaid principal balance | 556 | 770 | 568
Impaired loans, recorded investment with no allowance | 430 | 444 | 449
Impaired loans, recorded investment with allowance |  | 223 |
Impaired loans, total recorded investment | 430 | 667 | 449
Impaired loans, related allowance |  | 11 |
Impaired loans, average recorded investment | 440 | 613 | 517
Impaired loans, interest income recognized |  | 1 | 1
Real Estate 1 [Member] | Other Real Estate Loans [Member] |  |  |
Impaired loans, unpaid principal balance | 4,619 | 505 | 4,492
Impaired loans, recorded investment with no allowance | 297 | 455 | 171
Impaired loans, recorded investment with allowance | 4,270 |  | 4,270
Impaired loans, total recorded investment | 4,567 | 455 | 4,441
Impaired loans, related allowance | 2,065 |  | 2,065
Impaired loans, average recorded investment | 4,443 | 458 | 2,623
Impaired loans, interest income recognized | 1 |  | 109
Commercial and Industrial Loans [Member] |  |  |
Impaired loans, unpaid principal balance | 1,639 |  | 1,582
Impaired loans, recorded investment with no allowance |  |  |
Impaired loans, recorded investment with allowance | 1,548 |  | 1,548
Impaired loans, total recorded investment | 1,548 |  | 1,548
Impaired loans, related allowance | 123 |  | 158
Impaired loans, average recorded investment | 1,548 |  | 393
Impaired loans, interest income recognized |  |  | $ 77

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- Definition Average amount of investment of impaired financing receivables with related allowance for credit losses and without a related allowance for credit losses. + References 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=121611835&loc=d3e5212-111524 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 17 -URI http://asc.fasb.org/extlink&oid=121611835&loc=d3e5258-111524 + Details
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- Definition Amount of interest income recognized on a cash-basis method of accounting that the financing receivables (with related allowance for credit losses and without a related allowance for credit losses) were impaired. + References 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)(3) -URI http://asc.fasb.org/extlink&oid=121611835&loc=d3e5212-111524 + Details
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