Quarterly report pursuant to Section 13 or 15(d)

Fair Value Measurements - Foreign Exchange Contracts (Details)

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Fair Value Measurements - Foreign Exchange Contracts (Details) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Sep. 30, 2015
Sep. 30, 2014
Sep. 30, 2015
Sep. 30, 2014
Mar. 31, 2015
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]          
Maximum term of forward contracts 30 days        
Net Gain (Loss) on Foreign Currency Derivative Instruments Not Designated as Hedging Instruments $ (96) $ (784) $ (257) $ (769)  
Foreign Exchange Forward Contracts          
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]          
Foreign exchange contract forwards, assets 12   12   $ 87
Foreign exchange contract forwards, liabilities 28   28   $ 110
Gain (Loss) on Foreign Currency Derivatives Recorded in Earnings, Net $ (241) $ (208) $ (660) $ (175)