Note 7 - Derivative Instrument Assets And Liabilities (Detail) - Outstanding forward exchange contracts to trade U.S. in exchange for Canadian dollars as of June 30, 2011: (USD $)	Dec. 31, 2012 October – December, 2012 [Member]	Mar. 31, 2013 January – March, 2013 [Member]	Jun. 30, 2013 April – May, 2013 [Member]	Dec. 31, 2013 Total [Member]
Notional amount of U.S. dollars	$ 5,100,000	$ 6,000,000	$ 4,000,000	$ 15,100,000
Weighted average exchange rate of U.S. dollars	0.9855	1.0277	1.0385	1.0163
Fair value	$ 5,108	$ 249,008	$ 201,548	$ 455,664