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Note 3 - Allowance for Loan Losses, Nonperforming Assets and Impaired Loans - Allowance for Loan Losses (Details) - USD ($) $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Mar. 31, 2021 | Mar. 31, 2020 | Dec. 31, 2020
Balance | $ 8,481 | $ 6,863 | $ 6,863
Charge-offs | (47) | (175) | (720)
Recoveries | 52 | 73 | 347
Provision for loan losses | 50 | 479 | 1,991
Balance | 8,536 | 7,240 | 8,481
Real Estate Construction Portfolio Segment[Member] |  |  |
Balance | 503 | 400 | 400
Provision for loan losses | 8 | (25) | 103
Balance | 511 | 375 | 503
Consumer Real Estate Portfolio Segment [Member] |  |  |
Balance | 2,165 | 1,895 | 1,895
Charge-offs | 0 | (44) | (85)
Recoveries | 0 |  | 18
Provision for loan losses | 201 | 219 | 337
Balance | 2,366 | 2,070 | 2,165
Commercial Real Estate Portfolio Segment [Member] |  |  |
Balance | 3,853 | 2,559 | 2,559
Charge-offs | 0 | 0 |
Recoveries | 12 | 12 | 145
Provision for loan losses | (3) | 29 | 1,164
Balance | 3,862 | 2,600 | 3,853
Commercial Non Real Estate Segment [Member] |  |  |
Balance | 670 | 555 | 555
Charge-offs | 0 | (65) | (372)
Recoveries | 2 | 1 | 9
Provision for loan losses | (38) | 230 | 478
Balance | 634 | 721 | 670
Public Sector and IDA Portfolio Segment[Member] |  |  |
Balance | 339 | 478 | 478
Provision for loan losses | (28) | 33 | (139)
Balance | 311 | 511 | 339
Consumer Non Real Estate Portfolio Segment [Member] |  |  |
Balance | 555 | 650 | 650
Charge-offs | (47) | (66) | (248)
Recoveries | 38 | 60 | 175
Provision for loan losses | (50) | (25) | (22)
Balance | 496 | 619 | 555
Unallocated Financing Receivables [Member] |  |  |
Balance | 396 | 326 | 326
Provision for loan losses | (40) | 18 | 70
Balance | $ 356 | $ 344 | $ 396

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- Definition Amount of increase in allowance for credit loss on financing receivable from recovery. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 55 -Paragraph 79 -URI http://asc.fasb.org/extlink&oid=121647567&loc=SL82922352-210448 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 50 -Paragraph 13 -Subparagraph (e) -URI http://asc.fasb.org/extlink&oid=121599337&loc=SL82919249-210447 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)(4) -URI http://asc.fasb.org/extlink&oid=121611835&loc=SL6953423-111524 + Details
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- Definition Amount of writeoff of financing receivable, charged against allowance for credit loss. + 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 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 (c)(3) -URI http://asc.fasb.org/extlink&oid=121611835&loc=SL6953423-111524 Reference 3: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 55 -Paragraph 79 -URI http://asc.fasb.org/extlink&oid=121647567&loc=SL82922352-210448 + 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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