XML 94 R79.htm IDEA: XBRL DOCUMENT v3.20.4
Foreign Currency Exchange Contracts and Hedging - Additional Information (Details)
12 Months Ended
Dec. 31, 2020
USD ($)
Contract
Dec. 31, 2019
USD ($)
Contract
Dec. 31, 2018
USD ($)
Derivatives Fair Value [Line Items]      
Number of contract designated hedges | Contract 17 11  
Number of contract non-designated hedges | Contract 0 1  
Non-Designated Derivative Contracts      
Derivatives Fair Value [Line Items]      
Derivative contracts notional amounts $ 0 $ 3,396,000  
Designated Derivative Contracts      
Derivatives Fair Value [Line Items]      
Derivative contracts notional amounts 16,303,000 35,708,000  
Unrealized gain (loss) on derivative $ (289,000) $ (694,000) $ 404,000
Minimum      
Derivatives Fair Value [Line Items]      
Derivative contracts expiration period 1 month    
Maximum      
Derivatives Fair Value [Line Items]      
Derivative contracts expiration period 12 months