Derivative Instruments and Foreign Currency Exposure (Details Textual) (USD $)	3 Months Ended		6 Months Ended
	Jul. 31, 2012	Jul. 31, 2011	Jul. 31, 2012	Jul. 31, 2011
Foreign Currency Transaction Loss, before Tax	$ (375,741)		$ (691,528)
Foreign Currency Transaction Gain, before Tax		28,083		248,850
Foreign Currency Transaction Gain Loss Before Tax Price Per Share	$ (0.07)	$ 0.005	$ (0.13)	$ 0.05
Deferred Tax Liabilities, Derivatives	6,681,960	0	6,681,960	0
Derivative Financial Instruments, Liabilities [Member]
Other Liabilities	107,552	123,313	107,552	123,313
Derivative Financial Instruments, Assets [Member]
Other Assets	$ 107,552	$ 123,313	$ 107,552	$ 123,313