XML 64 R54.htm IDEA: XBRL DOCUMENT v3.20.2
Product Warranty - Narrative (Details) - USD ($)
$ in Thousands
9 Months Ended
Sep. 30, 2020
Dec. 31, 2019
Product Warranty (Textual) [Abstract]    
Accrued product warranty costs $ 2,133 $ 2,194
Minimum    
Product Warranty (Textual) [Abstract]    
Limited warranty period on product 1 year  
Maximum    
Product Warranty (Textual) [Abstract]    
Limited warranty period on product 2 years