Derivative Instruments (Derivative instruments in the condensed consolidated balance sheet) (Details) - USD ($) $ in Thousands	Sep. 30, 2016	Mar. 31, 2016
Designated as Hedging Instrument | Foreign exchange contracts | Prepaid expenses and other
Derivatives, Fair Value [Line Items]
Derivative assets, fair value	$ 241	$ 200
Designated as Hedging Instrument | Foreign exchange contracts | Accrued Liabilities
Derivatives, Fair Value [Line Items]
Derivative liability, fair value	(228)	(420)
Designated as Hedging Instrument | Interest Rate Swap [Member] | Accrued Liabilities
Derivatives, Fair Value [Line Items]
Derivative liability, fair value	(759)	(1,129)
Designated as Hedging Instrument | Interest Rate Swap [Member] | Other Noncurrent Liabilities [Member]
Derivatives, Fair Value [Line Items]
Derivative liability, fair value	(715)	(1,082)
Derivatives Not Designated as Hedging Instruments | Foreign exchange contracts | Prepaid expenses and other
Derivatives, Fair Value [Line Items]
Derivative assets, fair value	21	96
Derivatives Not Designated as Hedging Instruments | Foreign exchange contracts | Accrued Liabilities
Derivatives, Fair Value [Line Items]
Derivative liability, fair value	$ (35)	$ (7)