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WARRANTY LIABILITIES (Details) - USD ($)
$ in Thousands
9 Months Ended
Oct. 03, 2020
Sep. 28, 2019
Warranty liability activity    
Beginning balance $ 23,095 $ 22,807
Settlements in cash or kind (10,386) (12,957)
Warranties issued and adjustments to preexisting warranties 9,361 11,336
Ending balance $ 22,070 $ 21,186