Note 5 - Foreign Currency Forward Contracts (Details)	Mar. 31, 2016 USD ($)
Foreign Exchange Forward 1 [Member]
Derivative, Notional Amount	$ 6,002,500
Weighted average exchange rate of U.S. dollars	1.2556
Fair value	$ (192,223)
Foreign Exchange Forward 2 [Member]
Derivative, Notional Amount	$ 6,002,500
Weighted average exchange rate of U.S. dollars	1.2554
Fair value	$ (192,596)
Foreign Exchange Forward 3 [Member]
Derivative, Notional Amount	$ 4,952,500
Weighted average exchange rate of U.S. dollars	1.2885
Fair value	$ (32,002)
Derivative, Notional Amount	$ 16,957,500
Weighted average exchange rate of U.S. dollars	1.2651
Fair value	$ (416,821)