Derivative Financial Instruments Fair Value of Derivative Instruments (Details) - Foreign Exchange Contract [Member] - Not Designated as Hedging Instrument [Member] - USD ($) $ in Thousands	Jun. 30, 2015	Mar. 31, 2015	Jun. 30, 2014
Other Current Assets [Member]
Derivatives, Fair Value [Line Items]
Current derivative asset	$ 609	$ 1,373	$ 1,550
Accrued Expenses and Other Current Liabilities [Member]
Derivatives, Fair Value [Line Items]
Current derivative liability	$ 0	$ 0	$ 0