Note 8 - Bank Debt - Summary of Loan Balances (Details) - Bank Debt [Member] - USD ($)	Mar. 31, 2021	Dec. 31, 2020
Total Bank Debt	$ 19,196,543	$ 13,603,575
Less: current portion	1,333,333	1,333,333
Non-current bank debt	17,863,210	12,270,242
Less: unamortized debt costs	105,535	95,814
Net non-current bank debt	17,757,675	12,174,428
Term Debt [Member]
Total Bank Debt	2,444,445	2,777,778
Line of Credit [Member]
Total Bank Debt	$ 16,752,098	$ 10,825,797