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Note 9 - Notes Payable - Long-term Debt (Details) - USD ($) | Dec. 31, 2021 | Dec. 31, 2020
--- | --- | ---
Long-term debt | $ 6,921,487 | $ 8,622,580
Less current portion | (6,921,487) | (8,622,580)
Total Long-term debt, net of current portion | 0 | 0
Subordinated Debt [Member] | Officer [Member] |  |
Long-term debt | 1,193,079 | 1,123,769
Notes Payable, Related Party [Member] |  |
Long-term debt | 166,667 | 0
Term Loan [Member] |  |
Long-term debt | 559,140 | 2,156,895
Line of Credit [Member] | Revolving Credit Facility [Member] |  |
Long-term debt | $ 5,002,599 | $ 5,341,916

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