XML 66 R55.htm IDEA: XBRL DOCUMENT v3.21.1
Commitments and Contingencies, Warranties (Details) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2021
Mar. 31, 2020
Changes in product warranties [Roll forward]    
Balance, beginning of period $ 17,663 $ 17,175
Liabilities accrued for current year sales 20,177 22,067
Settlements of warranty claims (20,892) (22,010)
Balance, end of period $ 16,948 $ 17,232