Commitments and Contingencies (Tables)

6 Months Ended

Jun. 27, 2020

Commitments and Contingencies Disclosure [Abstract]

Warranty Liabilities

The activity in the accrued warranty liabilities account was as follows (in thousands):

	Six Months Ended
	June 27, 2020		June 29, 2019
Balance at beginning of year	$	11,345	$	10,389
Additions charged to costs and expenses for current-year sales	4,965		5,003
Deductions from reserves	(4,789)		(5,591)
Changes in liability for pre-existing warranties during the current year, including expirations	(89)		1,418
Balance at end of period	$	11,432	$	11,219