Derivative Instruments and Foreign Currency Exposure (Details Textual) (USD $)	3 Months Ended
	Apr. 30, 2014	Apr. 30, 2013
Derivative Instruments and Foreign Currency Exposure [Line Items]
Foreign Currency Transaction Gain (Loss), Before Tax	$ 38,636	$ (27,142)
Derivative Financial Instruments, Assets [Member]
Derivative Instruments and Foreign Currency Exposure [Line Items]
Foreign Currency Transaction Gain (Loss), Before Tax	18,110
Other Assets	$ 2,500,000	$ 3,500,000