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Fair Value Measurements- Additional Information (Details) - USD ($)
$ in Thousands
6 Months Ended
Sep. 30, 2015
Mar. 31, 2015
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Trading investments for deferred compensation plan $ 15,577 $ 17,237
Foreign exchange forward contract | Not designated as hedging instruments    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Notional amounts of foreign exchange forward contracts outstanding $ 60,800 61,700
Cash Flow Hedges | Foreign exchange forward contract | Designated as hedging instruments    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Average maturity 4 months  
Notional amounts of foreign exchange forward contracts outstanding $ 63,400 $ 43,500
Gain (loss) to be reclassified within twelve months $ 300