Annual report pursuant to Section 13 and 15(d)

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

v3.7.0.1
Fair Value Measurements - Foreign Exchange Contracts by Currency (Details) - Foreign Exchange Forward Contracts [Member] - USD ($)
$ in Thousands
 12 Months Ended
Mar. 31, 2017
Mar. 31, 2016
Mar. 31, 2015
Derivatives [Line Items]      
Gain (loss) on realized on foreign currency related to forward contracts $ (453) $ (411) $ (559)
Notional amount 2,375 11,911  
Russian Rubles [Member]      
Derivatives [Line Items]      
Notional amount 250 1,237  
Euro [Member]      
Derivatives [Line Items]      
Notional amount 0 4,224  
Canada, Dollars      
Derivatives [Line Items]      
Notional amount 0 534  
South Korean Won [Member]      
Derivatives [Line Items]      
Notional amount 1,300 3,050  
Mexico, Pesos      
Derivatives [Line Items]      
Notional amount 450 837  
Australia, Dollars      
Derivatives [Line Items]      
Notional amount 375 1,042  
China, Yuan Renminbi      
Derivatives [Line Items]      
Notional amount 0 334  
Brazil, Brazil Real      
Derivatives [Line Items]      
Notional amount 0 336  
South Africa, Rand      
Derivatives [Line Items]      
Notional amount $ 0 $ 317