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Guarantees (Tables)
 12 Months Ended
Dec. 28, 2019
Guarantees [Abstract]  
Schedule of Activity Related to Product Warranty
Activity related to product warranty was as follows (in thousands): 
 
December 28,
2019
 
December 29,
2018
Beginning balance
$
41,021

 
$
30,909

Charges to operations
23,874

 
28,685

Utilization
(25,070
)
 
(18,028
)
Change in estimate(1)
3,523

 
(545
)
Balance at the end of the period
$
43,348

 
$
41,021

(1) 
The Company records product warranty liabilities based on the latest quality and cost information available as of the date the revenue is recorded. The changes in estimate shown here are due to changes in overall actual failure rates, the mix of new versus used units related to replacement of failed units, and changes in the estimated cost of repair. As the Company's products mature over time, failure rates and repair costs generally decline leading to favorable changes in warranty reserves.