Fair Value Of Financial Instruments Fair Value Measurements (Tables)

3 Months Ended

Apr. 30, 2013

Fair Value Disclosures [Abstract]

Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis

The following table summarizes the valuation of the Company's assets and liabilities that are measured at fair value on a recurring basis:

	April 30, 2013					January 31, 2013
	Fair value measurement category					Fair value measurement category
	Level 1	Level 2		Level 3		Level 1	Level 2		Level 3
	(in thousands)
Assets
Foreign currency forward contracts		$	5,160				$	19,835
Liabilities
Foreign currency forward contracts		$	8,355				$	19,628
Acquisition-related contingent consideration				$	9,497				$	18,147