Quarterly report pursuant to Section 13 or 15(d)

Fair Value Measurements - Foreign Exchange Contracts by Currency (Details)

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Fair Value Measurements - Foreign Exchange Contracts by Currency (Details) - Foreign Exchange Forward Contracts - USD ($)
$ in Thousands
Sep. 30, 2019
Mar. 31, 2019
Derivative [Line Items]    
Notional amount $ 6,828 $ 7,400
Russian Ruble    
Derivative [Line Items]    
Notional amount 1,128 0
Euro    
Derivative [Line Items]    
Notional amount 500 0
Canadian Dollar    
Derivative [Line Items]    
Notional amount 2,000 1,500
South Korean Won    
Derivative [Line Items]    
Notional amount 1,000 2,000
Mexican Peso    
Derivative [Line Items]    
Notional amount 500 0
Australian Dollar    
Derivative [Line Items]    
Notional amount 700 900
Great Britain Pound    
Derivative [Line Items]    
Notional amount $ 1,000 $ 3,000