Note 7 - Bank Debt - Summary of Loan Balances (Details) - USD ($)	Mar. 31, 2019	Dec. 31, 2018
Total Bank Debt	$ 8,990,563	$ 9,628,602
Less: current portion	1,333,333	1,333,333
Non-current bank debt	7,657,230	8,295,269
Less: unamortized debt costs	94,169	100,590
Net non-current bank debt	7,563,061	8,194,679
Term Debt [Member]
Total Bank Debt	5,111,111	5,444,444
Line of Credit [Member]
Total Bank Debt	$ 3,879,452	$ 4,184,158