Quarterly report pursuant to Section 13 or 15(d)

Fair Value Measurements - Foreign Exchange Contracts (Details)

v3.8.0.1
Fair Value Measurements - Foreign Exchange Contracts (Details) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Sep. 30, 2017
Sep. 30, 2016
Sep. 30, 2017
Sep. 30, 2016
Mar. 31, 2017
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 $ (135) $ (367) $ 115 $ 399  
Foreign Exchange Forward Contracts          
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]          
Foreign exchange contract forwards, assets 0   0   $ 62
Foreign exchange contract forwards, liabilities 61   61   $ 10
Gain (Loss) on Foreign Currency Derivatives Recorded in Earnings, Net $ (85) $ (16) $ 132 $ 146