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Note 3 - Fair Values of Cash, Accounts Receivable, Accounts Payable and Accrued Expenses (Details) - USD ($)
Mar. 31, 2016
Dec. 31, 2015
Reported Value Measurement [Member]    
Short-term borrowings and long-term debt $ 31,228,152 $ 25,195,452
Estimate of Fair Value Measurement [Member]    
Short-term borrowings and long-term debt $ 31,228,152 $ 25,195,452