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Note 4 - Loans Receivable and Credit Disclosures - Loans Receivable Impairment Analysis (Details) - USD ($) $ in Thousands | Dec. 31, 2021 | Dec. 31, 2020
--- | --- | ---
Ending balance: Individually evaluated for impairment |  | $ 12,312 | $ 15,273
Ending balance: Collectively evaluated for impairment |  | 1,148,355 | 1,132,304
Ending balance |  | 1,160,667 | 1,147,577
Construction Real Estate [Member] |  |  |
Ending balance: Individually evaluated for impairment |  | 0 | 167
Ending balance: Collectively evaluated for impairment |  | 42,638 | 45,330
Ending balance |  | 42,638 | 45,497
Family Residential Real Estate 1-4 [Member] |  |  |
Ending balance: Individually evaluated for impairment |  | 980 | 1,340
Ending balance: Collectively evaluated for impairment |  | 245,765 | 212,222
Ending balance |  | 246,745 | 213,562
Commercial Real Estate Portfolio Segment [Member] |  |  |
Ending balance: Individually evaluated for impairment |  | 9,792 | 10,258
Ending balance: Collectively evaluated for impairment |  | 505,575 | 486,099
Ending balance |  | 515,367 | 496,357
Agriculture Real Estate [Member] |  |  |
Ending balance: Individually evaluated for impairment |  | 546 | 1,664
Ending balance: Collectively evaluated for impairment |  | 152,911 | 150,328
Ending balance |  | 153,457 | 151,992
Commercial Portfolio Segment [Member] |  |  |
Ending balance: Individually evaluated for impairment |  | 330 | 940
Ending balance: Collectively evaluated for impairment |  | 75,152 | 121,595
Ending balance | [1] | 75,482 | 122,535
Agriculture [Member] |  |  |
Ending balance: Individually evaluated for impairment |  | 637 | 859
Ending balance: Collectively evaluated for impairment |  | 111,244 | 101,727
Ending balance |  | 111,881 | 102,586
Consumer and Other [Member] |  |  |
Ending balance: Individually evaluated for impairment |  | 27 | 45
Ending balance: Collectively evaluated for impairment |  | 15,070 | 15,003
Ending balance |  | $ 15,097 | $ 15,048
[1] | Commercial loan portfolio includes $6.0 million and $50.9 million of Paycheck Protection Program ("PPP") loans as of December 31, 2021 and 2020, respectively

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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=123577603&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=123577603&loc=SL6953423-111524 + 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=124259787&loc=d3e4428-111522 + Details
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