Derivative Instruments and Foreign Currency Exposure (Details Textual) (USD $)	3 Months Ended		9 Months Ended
	Oct. 31, 2013	Oct. 31, 2012	Oct. 31, 2013	Oct. 31, 2012	Oct. 31, 2013 Derivative Financial Instruments, Assets [Member]	Jan. 31, 2013 Derivative Financial Instruments, Assets [Member]
Foreign Currency Transaction Gain (Loss), Before Tax	$ 115,764	$ (61,791)	$ (271,647)	$ (840,319)
Foreign Currency Transaction Gain (Loss) Before Tax Price Per Share (in dollars per share)	$ 0.02		$ (0.05)
Other Assets					$ 92,011	$ 19,544