Quarterly report pursuant to Section 13 or 15(d)

Foreign Currency Exchange Contracts and Hedging - Additional Information (Details)

v3.7.0.1
Foreign Currency Exchange Contracts and Hedging - Additional Information (Details)
3 Months Ended
Mar. 31, 2017
USD ($)
Contract
Mar. 31, 2016
USD ($)
Contract
Derivatives Fair Value [Line Items]    
Number of contract designated hedges | Contract 12 20
Number of contract non-designated hedges | Contract 3  
Non-Designated Derivative Contracts    
Derivatives Fair Value [Line Items]    
Derivative contracts notional amounts $ 1,620,000 $ 879,000
Designated Derivative Contracts    
Derivatives Fair Value [Line Items]    
Derivative contracts notional amounts 7,378,000 4,408,000
Unrealized loss on derivative $ 3,000 $ 92,000
Minimum    
Derivatives Fair Value [Line Items]    
Derivative contracts expiration period 1 month  
Maximum    
Derivatives Fair Value [Line Items]    
Derivative contracts expiration period 9 months