Quarterly report pursuant to Section 13 or 15(d)

Reserve for Product Warranties - Narrative (Details)

v3.19.2
Reserve for Product Warranties - Narrative (Details) - USD ($)
$ in Thousands
6 Months Ended
Jun. 30, 2019
Mar. 31, 2019
Dec. 31, 2018
Jun. 30, 2018
Mar. 31, 2018
Dec. 31, 2017
Product Warranties Disclosures [Abstract]            
Product warranty period (in years) 1 year          
Product Liability Contingency [Line Items]            
Accrual of estimated costs $ 8,076 $ 8,225 $ 9,391 $ 10,913 $ 9,068 $ 10,995
Certain products            
Product Liability Contingency [Line Items]            
Accrual of estimated costs $ 2,900