Note 7 - Bank Debt - Summary of Loan Balances (Details) - USD ($)	Sep. 30, 2019	Dec. 31, 2018
Total Bank Debt	$ 8,656,147	$ 9,628,602
Less: current portion	1,333,333	1,333,333
Non-current bank debt	7,322,814	8,295,269
Less: unamortized debt costs	81,458	100,590
Net non-current bank debt	7,241,356	8,194,679
Term Debt [Member]
Total Bank Debt	4,444,444	5,444,444
Line of Credit [Member]
Total Bank Debt	$ 4,211,703	$ 4,184,158