Derivative Instruments and Hedging Activities (Effect on Consolidated Statements of Operations) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
Mar. 31, 2013	Mar. 31, 2012	Mar. 31, 2011
Derivatives designated as hedging instruments [Member] \| Foreign currency contracts [Member] \| Other comprehensive income [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Gain (loss) recognized in other comprehensive income (effective portion), net of taxes	$ (375)	$ 143	$ (291)
Derivatives designated as hedging instruments [Member] \| Foreign currency contracts [Member] \| Selling, general and administrative expenses [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Amounts reclassified from AOCI into results of operations (effective portion), net of taxes	357	154	447
Derivatives not designated as hedging instruments [Member] \| Interest rate swaps [Member] \| Interest expense (income), net [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Gain (loss) recognized in results of operations	$ (606)	$ 530	$ 2,968

The effective portion of net gain (loss) reclassified from accumulated other comprehensive income into income on derivative instruments designated and qualifying as hedging instruments.

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The amount of net gains and losses recognized in income during the period on derivative instruments designated and qualifying as hedging instruments in fair value hedges and related hedged items designated and qualifying in fair value hedges, on derivative instruments designated and qualifying as hedging instruments in cash flow hedges, and on derivative instruments not designated as hedging instruments.

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- Definition

The effective portion of gains and losses (net) on derivative instruments designated and qualifying as hedging instruments that was recognized in other comprehensive income during the current period.

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