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Note 10 - Subordinated Debt - Related Parties (Details Textual) - USD ($) $ / shares in Units, $ in Millions | 1 Months Ended |  |  |  |
--- | --- | --- | --- | --- | ---
Jan. 31, 2019 | Dec. 31, 2020 | Dec. 31, 2019 | Jan. 11, 2019 | Dec. 31, 2017
Share Price (in dollars per share) |  |  |  | $ 3.32 |
John H Schwan [Member] | Exchange of Debt To Common Stock [Member] |  |  |  |  |
Debt Conversion, Original Debt, Amount | $ 0.6 |  |  |  |
Debt Conversion, Converted Instrument, Shares Issued (in shares) | 181,000 |  |  |  |
Share Price (in dollars per share) | $ 3.32 |  |  |  |
Long-term Debt, Total |  | $ 1.1 | $ 1.1 |  |
John H Schwan [Member] | Promissory Note [Member] |  |  |  |  |
Due to Related Parties, Total |  |  |  |  | $ 1.1
Interest Payable |  |  |  |  | $ 0.4

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- Definition Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 20 -Section 50 -Paragraph 4 -Subparagraph (b)(3) -URI http://asc.fasb.org/extlink&oid=120520924&loc=SL6031897-161870 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03(a)(16)) -URI http://asc.fasb.org/extlink&oid=120400017&loc=d3e572229-122910 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(16)) -URI http://asc.fasb.org/extlink&oid=120398452&loc=d3e534808-122878 Reference 4: 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)) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 + Details
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