Derivative Financial Instruments Foreign Currency Contracts (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Foreign Exchange Contract [Member] | Not Designated as Hedging Instrument [Member] | Cost of goods and services sold [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Gain (Loss) Recognized in Income	$ (609)	$ (545)	$ (2,001)	$ 1,527