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Note 7 - Loans Receivable and Credit Disclosures - Allowance for Loan Losses Impairment Analysis (Details) - USD ($) $ in Thousands | Sep. 30, 2021 | Dec. 31, 2020
--- | --- | ---
Individually evaluated for impairment | $ 1,539 | $ 1,819
Collectively evaluated for impairment | 15,291 | 15,396
Balance | 16,830 | 17,215
Construction Real Estate [Member] |  |
Individually evaluated for impairment | 0 | 0
Collectively evaluated for impairment | 582 | 725
Balance | 582 | 725
Family Residential Real Estate 1-4 [Member] |  |
Individually evaluated for impairment | 40 | 150
Collectively evaluated for impairment | 2,619 | 2,431
Balance | 2,659 | 2,581
Commercial Real Estate Portfolio Segment [Member] |  |
Individually evaluated for impairment | 1,326 | 1,486
Collectively evaluated for impairment | 7,597 | 7,444
Balance | 8,923 | 8,930
Agriculture Real Estate [Member] |  |
Individually evaluated for impairment | 0 | 0
Collectively evaluated for impairment | 1,578 | 1,595
Balance | 1,578 | 1,595
Commercial Portfolio Segment [Member] |  |
Individually evaluated for impairment | 18 | 115
Collectively evaluated for impairment | 1,187 | 1,338
Balance | 1,205 | 1,453
Agriculture [Member] |  |
Individually evaluated for impairment | 132 | 40
Collectively evaluated for impairment | 1,527 | 1,656
Balance | 1,659 | 1,696
Consumer and Other [Member] |  |
Individually evaluated for impairment | 23 | 28
Collectively evaluated for impairment | 201 | 207
Balance | $ 224 | $ 235

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- Definition Amount of allowance for credit loss on financing receivable. Excludes allowance for financing receivable covered under loss sharing agreement. + 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)(1) -URI http://asc.fasb.org/extlink&oid=123577603&loc=SL6953423-111524 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(7)(2)) -URI http://asc.fasb.org/extlink&oid=120398452&loc=d3e534808-122878 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=124255206&loc=SL82895884-210446 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 50 -Paragraph 13 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=124255953&loc=SL82919249-210447 Reference 5: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 50 -Paragraph 13 -Subparagraph (f) -URI http://asc.fasb.org/extlink&oid=124255953&loc=SL82919249-210447 Reference 6: http://www.xbrl.org/2003/role/disclosureRef -Publisher SEC -Name Regulation S-K (SK) -Number 229 -Section 1405 -Paragraph (a) -Subparagraph (3) Reference 7: http://www.xbrl.org/2003/role/disclosureRef -Publisher SEC -Name Regulation S-K (SK) -Number 229 -Section 1405 -Paragraph (c) Reference 8: http://www.xbrl.org/2003/role/disclosureRef -Publisher SEC -Name Regulation S-K (SK) -Number 229 -Section 1405 -Paragraph (a) -Subparagraph (1) + Details
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