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Note 4 - Allowance for Loan Losses - Allowance by Impairment Methodology and Loans by Impairment Methodology (Details) - USD ($) $ in Thousands | 9 Months Ended | 12 Months Ended
--- | --- | ---
Sep. 30, 2020 | Sep. 30, 2019 | Dec. 31, 2019
Beginning balance | $ 4,934 | [1] | $ 5,009 | $ 5,009 |
Charge-offs | (619) |  | (603) | (884) |
Recoveries | 262 |  | 306 | 359 |
Provision for (recovery of) loan losses | 3,200 |  | 200 | 450 |
Ending balance | 7,777 |  | 4,912 | 4,934 | [1]
Individually evaluated for impairment, allowance | 2,289 |  | 74 | 33 |
Collectively evaluated for impairment, allowance | 5,488 |  | 4,838 | 4,901 |
Loans | 648,368 |  |  | 574,346 |
Individually evaluated for impairment, loans | 6,974 |  | 1,566 | 1,459 |
Collectively evaluated for impairment, loans | 641,394 |  | 569,687 | 572,887 |
Real Estate 1 [Member] | Construction and Land Development [Member] |  |  |  |  |
Beginning balance | 464 |  | 561 | 561 |
Charge-offs | 0 |  | 0 | (2) |
Recoveries | 2 |  | 50 | 50 |
Provision for (recovery of) loan losses | (164) |  | (119) | (145) |
Ending balance | 302 |  | 492 | 464 |
Individually evaluated for impairment, allowance | 0 |  | 31 | 22 |
Collectively evaluated for impairment, allowance | 302 |  | 461 | 442 |
Loans | 27,472 |  |  | 43,164 |
Individually evaluated for impairment, loans | 283 |  | 376 | 367 |
Collectively evaluated for impairment, loans | 27,189 |  | 44,817 | 42,797 |
Real Estate 1 [Member] | Secured by Multi-family Residential Properties [Member] |  |  |  |  |
Beginning balance | 776 |  | 895 | 895 |
Charge-offs | 0 |  | (58) | (58) |
Recoveries | 6 |  | 8 | 9 |
Provision for (recovery of) loan losses | 305 |  | (71) | (70) |
Ending balance | 1,087 |  | 774 | 776 |
Individually evaluated for impairment, allowance | 0 |  | 16 | 11 |
Collectively evaluated for impairment, allowance | 1,087 |  | 758 | 765 |
Loans | 234,198 |  |  | 229,438 |
Individually evaluated for impairment, loans | 469 |  | 690 | 630 |
Collectively evaluated for impairment, loans | 233,729 |  | 226,138 | 228,808 |
Real Estate 1 [Member] | Other Real Estate Loans [Member] |  |  |  |  |
Beginning balance | 2,296 |  | 2,160 | 2,160 |
Charge-offs | 0 |  | 0 | (27) |
Recoveries | 2 |  | 0 | 1 |
Provision for (recovery of) loan losses | 2,691 |  | 166 | 162 |
Ending balance | 4,989 |  | 2,326 | 2,296 |
Individually evaluated for impairment, allowance | 2,108 |  | 27 | 0 |
Collectively evaluated for impairment, allowance | 2,881 |  | 2,299 | 2,296 |
Loans | 250,319 |  |  | 236,555 |
Individually evaluated for impairment, loans | 4,674 |  | 500 | 462 |
Collectively evaluated for impairment, loans | 245,645 |  | 232,567 | 236,093 |
Commercial and Industrial Loans [Member] |  |  |  |  |
Beginning balance | 562 |  | 464 | 464 |
Charge-offs | (69) |  | (2) | (2) |
Recoveries | 17 |  | 6 | 8 |
Provision for (recovery of) loan losses | 398 |  | 98 | 92 |
Ending balance | 908 |  | 566 | 562 |
Individually evaluated for impairment, allowance | 181 |  | 0 | 0 |
Collectively evaluated for impairment, allowance | 727 |  | 566 | 562 |
Loans | 125,277 |  |  | 50,153 |
Individually evaluated for impairment, loans | 1,548 |  | 0 | 0 |
Collectively evaluated for impairment, loans | 123,729 |  | 50,557 | 50,153 |
Consumer and Other Loans [Member] |  |  |  |  |
Beginning balance | 836 |  | 929 | 929 |
Charge-offs | (550) |  | (543) | (795) |
Recoveries | 235 |  | 242 | 291 |
Provision for (recovery of) loan losses | (30) |  | 126 | 411 |
Ending balance | 491 |  | 754 | 836 |
Individually evaluated for impairment, allowance | 0 |  | 0 | 0 |
Collectively evaluated for impairment, allowance | 491 |  | 754 | 836 |
Loans | 11,102 |  |  | 15,036 |
Individually evaluated for impairment, loans | 0 |  | 0 | 0 |
Collectively evaluated for impairment, loans | $ 11,102 |  | $ 15,608 | $ 15,036 |
[1] | Derived from audited consolidated financial statements.

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- Definition Represents the amount of provision (reduction in reserve) for loan losses during the period. + References No definition available. + Details
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- Definition Amount of direct write-downs of accounts receivable charged against the allowance. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 50 -Paragraph 13 -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=121599337&loc=SL82919249-210447 + Details
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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 http://asc.fasb.org/extlink&oid=121611835&loc=SL6953423-111524 + Details
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- Definition The valuation allowance for financing receivables that are expected to be uncollectible that were collectively evaluated for impairment. + 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 (g) -URI http://asc.fasb.org/extlink&oid=121611835&loc=SL6953423-111524 + Details
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- Definition Amount of valuation allowance for financing receivables that are expected to be uncollectible that were individually evaluated for impairment. + 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 (g) -URI http://asc.fasb.org/extlink&oid=121611835&loc=SL6953423-111524 + Details
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- Definition The balance of financing receivables that were collectively evaluated for impairment. + 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 (h) -URI http://asc.fasb.org/extlink&oid=121611835&loc=SL6953423-111524 + Details
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- Definition The balance of financing receivables that were individually evaluated for impairment. + 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 (h) -URI http://asc.fasb.org/extlink&oid=121611835&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://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (g) -URI http://asc.fasb.org/extlink&oid=121611835&loc=SL6953423-111524 Reference 2: 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 http://asc.fasb.org/extlink&oid=121614798&loc=d3e15032-111544 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)(1) -URI http://asc.fasb.org/extlink&oid=121611835&loc=SL6953423-111524 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section S99 -Paragraph 4 -Subparagraph (SAB Topic 6.L.1) -URI http://asc.fasb.org/extlink&oid=27010918&loc=d3e74567-122707 + Details
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- Definition Amount before allowance of loans and leases held in portfolio, including but not limited to, commercial and consumer loans. Includes deferred interest and fees, undisbursed portion of loan balance, unamortized costs and premiums and discounts from face amounts. Excludes loans and leases covered under loss sharing agreements. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=121593590&loc=d3e4428-111522 + Details
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