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Commitments and Contingencies (Tables)
3 Months Ended
Apr. 02, 2021
Commitments and Contingencies Disclosure [Abstract]  
Schedule of Product Warranty Liability The change in product warranty liability comprised the following (in thousands):
December 31, 2020$163 
Additions to warranty reserve, net of reversals15 
Adjustments to pre-existing warranties (63)
April 2, 2021$115