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Derivative Instruments and Foreign Currency Exposure (Tables)

3 Months Ended

Apr. 30, 2013

Derivative Instruments and Hedging Activities Disclosure [Abstract]

Schedule of Notional Amounts of Outstanding Derivative Positions [Table Text Block]

Derivatives not designated as hedging instruments

Foreign Exchange Forward Contracts

		Three Months Ended
		April 30, 2013				April 30, 2012
Notional Value in USD		$	4,587,136			$	2,503,770
Gain and loss reported in current operating income (expense)			29,879				(57,261	)

There is no outstanding balance from foreign exchange forward contracts as of April 30, 2013 or April 30, 2012.

Derivatives designated as hedging instruments

Asset Derivative from Foreign Currency Cash Flow Hedge

		As of April 30, 2013				As of January 31, 2013

Notional value in USD		$	3,135,120			$	6,944,040
Gain reported in equity as other comprehensive income			88,261				38,513

Effect of Derivative on Income Statement from Foreign Currency Cash Flow Hedge

		Three Months Ended April 30, 2013				Three Months Ended April 30, 2012

Gain reclassed from other comprehensive income into current earnings during three months ended April 30, 2013, reported in operating income		$	75,668			$	22,329