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Note 9 - Borrowings (Details Textual) - USD ($) | 1 Months Ended |  |
--- | --- | --- | ---
Jun. 30, 2020 | Dec. 31, 2020 | Dec. 31, 2019
Federal Home Loan Bank, Advances, General Debt Obligations, Amount of Available, Unused Funds |  | $ 85,600,000 |
Term Loan [Member] |  |  |
Debt Instrument, Face Amount | $ 10,000,000 |  |
Debt Instrument, Interest Rate, Effective Percentage |  | 3.00% |
Term Loan [Member] | London Interbank Offered Rate (LIBOR) [Member] |  |  |
Debt Instrument, Basis Spread on Variable Rate | 2.50% |  |
Term Loan [Member] | Base Rate [Member] |  |  |
Debt Instrument, Basis Spread on Variable Rate | 3.00% |  |
Agricultural and Residential Real Estate [Member] |  |  |
Federal Home Loan Bank, Advances, General Debt Obligations, Disclosures, Collateral Pledged |  | $ 158,200,000 | $ 200,100,000

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- Definition Effective interest rate for the funds borrowed under the debt agreement considering interest compounding and original issue discount or premium. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 20 -Section 50 -Paragraph 6 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=120520924&loc=SL6036836-161870 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=119993939&loc=d3e28551-108399 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.22(a)(1)) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 + Details
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