Derivative Financial Instruments (Tables)

6 Months Ended

Jul. 31, 2012

Derivative Financial Instruments [Abstract]

Fair value and presentation of derivatives

	Asset Derivatives					Liability Derivatives
	Balance Sheet Location	2012 Fair Value		2011 Fair Value		Balance Sheet Location	2012 Fair Value		2011 Fair Value
Derivatives not designated as hedging instruments:
Foreign Exchange Contracts	Other Current Assets	$	25	$	2,978	Accrued Liabilities	$	1,820	$	—
Commodity Future Contracts	Other Current Assets		—		—	Accrued Liabilities		—		431
Total Derivative Instruments		$	25	$	2,978		$	1,820	$	431