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WARRANTY LIABILITIES (Details) - USD ($)
$ in Thousands
6 Months Ended
Jul. 04, 2020
Jun. 29, 2019
Warranty liability activity    
Beginning balance $ 23,095 $ 22,807
Settlements in cash or kind (7,129) (7,749)
Warranties issued and adjustments to preexisting warranties 7,161 5,909
Ending balance $ 23,127 $ 20,967