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Product Warranties (Tables)
 3 Months Ended
Mar. 28, 2020
Product Warranties Disclosures [Abstract]  
Activity Associated with Warranty Obligations The following table summarizes when these estimated settlements are expected to be paid (in thousands):
 
March 28,
2020
 
December 28,
2019
Current - in the next twelve months
$
8,280

 
$
7,940

Long-term - beyond one year
7,941

 
7,925

Total
$
16,221

 
$
15,865


Activity associated with warranty obligations was as follows (in thousands):
 
Three Months Ended
 
March 28,
2020
 
March 30,
2019
Balance at beginning of period
$
15,865

 
$
15,450

Accruals for warranties issued during period
4,778

 
5,718

Adjustments related to pre-existing warranties
514

 
89

Settlements made during the period
(4,936
)
 
(5,746
)
Balance at end of period
$
16,221

 
$
15,511