Warranties (Tables)

6 Months Ended

Jun. 25, 2016

Product Warranties Disclosures [Abstract]

Components of the warranty accrual

Components of the warranty accrual, which were included in the accompanying condensed consolidated balance sheets with other current liabilities, were as follows (in thousands):

	Three Months Ended						Six Months Ended
	June 25, 2016			June 27, 2015			June 25, 2016			June 27, 2015
Balance as of beginning of period	$	4,377		$	3,440		$	4,504		$	2,953
Accruals for warranties issued during period		1,368			2,251			2,429			3,953
Settlements during the period		(1,189	)		(1,899	)		(2,377	)		(3,114	)
Balance as of end of period	$	4,556		$	3,792		$	4,556		$	3,792