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Note 7 - Bank Debt - Summary of Loan Balances (Details) - USD ($)
Mar. 31, 2018
Dec. 31, 2017
Total Bank Debt $ 3,472,850 $ 5,274,235
Less: Current Portion 500,000 500,000
Non-Current Bank Debt 2,972,850 4,774,235
Less: Unamortized Debt Costs 38,708 41,685
Net Non-Current Bank Debt 2,934,142 4,732,550
Term Debt [Member]    
Total Bank Debt 1,625,000 1,750,000
Line of Credit [Member]    
Total Bank Debt $ 1,847,850 $ 3,524,235