Derivative Instruments And Hedging Activities (Fair Value Of Derivatives Designated As Hedging Instruments) (Details) (Interest Rate Swap [Member], Prepaid expenses and other current assets [Member], USD $) In Thousands, unless otherwise specified	Dec. 31, 2013	Mar. 31, 2013
Interest Rate Swap [Member] | Prepaid expenses and other current assets [Member]
Derivatives, Fair Value [Line Items]
Fair value of interest rate fair value hedges	$ 0	$ 2,490