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Note 13 - Fair Value of Financial Instruments - Assets and Liabilities Measured at Fair Value (Details) - USD ($)
Mar. 31, 2017
Mar. 31, 2016
Marketable Securities $ 4,594,000 $ 9,656,000
Redeemable Non-Controlling Interest (Level 3) 1,443,901
Fair Value, Inputs, Level 1 [Member]    
Marketable Securities 4,593,667 9,655,915
Acquisition contingent consideration obligations (Level 3) $ 3,023,031