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Commitments and Contingencies (Tables)
 6 Months Ended
Jun. 26, 2020
Commitments and Contingencies Disclosure [Abstract]  
Summary of Warranty Accrual Included in Accrued Liabilities Activity for the Company’s warranty accrual, which is included in “Accrued and other current liabilities”, is summarized below (in thousands):
 
Three months ended
 
Six months ended
 
June 26,
2020
 
June 28,
2019
 
June 26,
2020
 
June 28,
2019
Balance at beginning of period
$
3,744

 
$
4,587

 
$
4,314

 
$
4,869

   Accrual for current period warranties
1,013

 
1,570

 
1,669

 
2,973

   Warranty costs incurred
(939
)
 
(1,355
)
 
(2,165
)
 
(3,040
)
Balance at end of period
$
3,818

 
$
4,802

 
$
3,818

 
$
4,802