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Foreign Currency Exchange Contracts and Hedging (Details)
3 Months Ended
Jun. 30, 2018
USD ($)
counterparty
Jun. 30, 2017
USD ($)
Aug. 03, 2018
USD ($)
Mar. 31, 2018
USD ($)
Foreign currency exchange contracts and hedging        
Gain (loss) reclassification from AOCI to income, estimate of time to transfer 12 months      
Foreign currency exchange contracts        
Foreign currency exchange contracts and hedging        
Number of counterparties in derivative contracts | counterparty 5      
Maximum remaining maturity of foreign currency derivatives 9 months      
Designated as Hedging Instrument        
Foreign currency exchange contracts and hedging        
Derivative entered into and settled during period $ 0      
Designated as Hedging Instrument | Derivatives designated as cash flow hedges        
Summary of the effect of derivative instruments on the consolidated statements of income        
Amount of gain (loss) on derivative instruments (effective portion) recognized in other comprehensive loss 6,770,000 $ (5,890,000)    
Amount of gain excluded from effectiveness testing recognized in SG&A expenses 846,000 333,000    
Not Designated as Hedging Instrument        
Foreign currency exchange contracts and hedging        
Derivative, settled during period, notional amount $ 0      
Not Designated as Hedging Instrument | Foreign currency exchange contracts        
Foreign currency exchange contracts and hedging        
Maximum remaining maturity of foreign currency derivatives 9 months      
Summary of the effect of derivative instruments on the consolidated statements of income        
Amount of gain (loss) on derivative instruments recognized in SG&A expenses $ 487,000 $ (1,603,000)    
Not Designated as Hedging Instrument | Derivatives designated as cash flow hedges | Foreign currency exchange contracts        
Foreign currency exchange contracts and hedging        
Notional value 14,000,000      
Subsequent Event | Designated as Hedging Instrument | Derivatives designated as cash flow hedges | Foreign currency exchange contracts        
Foreign currency exchange contracts and hedging        
Notional value     $ 0  
Subsequent Event | Not Designated as Hedging Instrument | Derivatives designated as cash flow hedges | Foreign currency exchange contracts        
Foreign currency exchange contracts and hedging        
Notional value     $ 0  
Fair Value, Measurements, Recurring        
Foreign currency exchange contracts and hedging        
Fair value recorded in other current assets 8,660,000      
Fair Value, Measurements, Recurring | Foreign currency exchange contracts        
Foreign currency exchange contracts and hedging        
Notional value 145,134,000      
Fair Value, Measurements, Recurring | Designated as Hedging Instrument        
Foreign currency exchange contracts and hedging        
Fair value recorded in other current assets 8,182,000     $ 950,000
Fair Value, Measurements, Recurring | Designated as Hedging Instrument | Derivatives designated as cash flow hedges | Foreign currency exchange contracts        
Foreign currency exchange contracts and hedging        
Notional value 126,332,000      
Fair value recorded in other current assets 8,182,000      
Fair Value, Measurements, Recurring | Not Designated as Hedging Instrument        
Foreign currency exchange contracts and hedging        
Fair value recorded in other current assets 478,000      
Fair Value, Measurements, Recurring | Not Designated as Hedging Instrument | Foreign currency exchange contracts        
Foreign currency exchange contracts and hedging        
Notional value $ 18,802,000