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Guarantees (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Guarantees [Abstract]      
Standard warranty period (in years) 1 year    
Movement in Standard Product Warranty Accrual [Roll Forward]      
Beginning balance $ 1,585 $ 1,750 $ 1,954
Provision for warranties 1,699 1,099 1,034
Claims made (1,098) (1,264) (1,238)
Ending balance 2,186 1,585 1,750
Extended Product Warranty Disclosure [Abstract]      
Product Warranty Expense $ 5,300 $ 4,900 $ 4,600