Note 7 - Bank Debt - Summary of Loan Balances (Details) - Bank Debt [Member] - USD ($)	Mar. 31, 2020	Dec. 31, 2019
Total Bank Debt	$ 15,621,666	$ 7,834,106
Less: current portion	1,333,333	1,333,333
Non-current bank debt	14,288,333	6,500,773
Less: unamortized debt costs	125,153	124,179
Net non-current bank debt	14,163,181	6,376,594
Term Debt [Member]
Total Bank Debt	3,777,778	4,111,111
Line of Credit [Member]
Total Bank Debt	$ 11,843,888	$ 3,722,995