Annual report pursuant to Section 13 and 15(d)

Fair Value Measurements - Foreign Exchange Contracts (Details)

v3.8.0.1
Fair Value Measurements - Foreign Exchange Contracts (Details) - USD ($)
$ in Thousands
12 Months Ended
Mar. 31, 2018
Mar. 31, 2017
Mar. 31, 2016
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Maximum term of forward contracts 30 days    
Net foreign currency loss $ 5,725 $ 628 $ 550
Foreign Exchange Forward Contracts [Member]      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Foreign exchange contract forwards, assets 229 62  
Foreign exchange contract forwards, liabilities 25 10  
Gain (loss) on realized on foreign currency related to forward contracts $ (96) $ (453) $ (411)