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Note 13 - Related Party Transactions (Details Textual) - USD ($) | 12 Months Ended |
--- | --- | ---
Dec. 31, 2021 | Dec. 31, 2020 | Jul. 01, 2019
Due from Related Parties, Current, Total |  | $ 100,000 |
Schwan Incorporated [Member] |  |  |
Related Party Transaction, Amounts of Transaction | 13,000 | 13,000 |
John H Schwan [Member] |  |  |
Due to Related Parties, Total | $ 1,175,361 | 1,123,769 |
Board of Directors Chairman [Member] |  |  |
Due from Related Parties, Current, Total |  |  | $ 1,300,000
Clever Container [Member] | Notes Receivable [Member] |  |  |
Asset Impairment Charges, Total |  | $ 1,277,000 |

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