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Note 5 - Allowance for Loan Losses, Nonperforming Assets and Impaired Loans - Allowance for Loan Losses (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
Balance | $ 6,863 | $ 7,390 | $ 7,925
Charge-offs | (720) | (920) | (689)
Recoveries | 347 | 267 | 235
Provision for (recovery of) loan losses | 1,991 | 126 | (81)
Balance | 8,481 | 6,863 | 7,390
Real Estate Construction Portfolio Segment[Member] |  |  |
Balance | 400 | 398 | 337
Provision for (recovery of) loan losses | 103 | 2 | 61
Balance | 503 | 400 | 398
Consumer Real Estate Portfolio Segment [Member] |  |  |
Balance | 1,895 | 2,049 | 2,027
Charge-offs | (85) | (192) | (38)
Recoveries | 18 |  | 3
Provision for (recovery of) loan losses | 337 | 38 | 57
Balance | 2,165 | 1,895 | 2,049
Commercial Real Estate Portfolio Segment [Member] |  |  |
Balance | 2,559 | 2,798 | 3,044
Charge-offs | (15) | (150) |
Recoveries | 145 | 49 | 49
Provision for (recovery of) loan losses | 1,164 | (138) | (295)
Balance | 3,853 | 2,559 | 2,798
Commercial Non Real Estate Segment [Member] |  |  |
Balance | 555 | 602 | 1,072
Charge-offs | (372) | (47) | (107)
Recoveries | 9 | 1 | 22
Provision for (recovery of) loan losses | 478 | (1) | (385)
Balance | 670 | 555 | 602
Public Sector and IDA Portfolio Segment[Member] |  |  |
Balance | 478 | 583 | 419
Provision for (recovery of) loan losses | (139) | (105) | 164
Balance | 339 | 478 | 583
Consumer Non Real Estate Portfolio Segment [Member] |  |  |
Balance | 650 | 750 | 707
Charge-offs | (248) | (531) | (544)
Recoveries | 175 | 217 | 161
Provision for (recovery of) loan losses | (22) | 214 | 426
Balance | 555 | 650 | 750
Unallocated Financing Receivables [Member] |  |  |
Balance | 326 | 210 | 319
Provision for (recovery of) loan losses | 70 | 116 | (109)
Balance | $ 396 | $ 326 | $ 210

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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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