XML 10 R88.htm IDEA: XBRL DOCUMENT v3.19.2
Liability for Warranty Returns - Additional Information (Detail) - 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]            
Period of assurance-based warranty for product defects 90 days to five years          
Liability for warranty obligations $ 8,972 $ 8,802 $ 8,623 $ 10,111 $ 9,687 $ 9,724