Warranties (Tables)

12 Months Ended

Dec. 31, 2016

Product Warranties Disclosures [Abstract]

Components of the warranty accrual

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

	Years Ended
	December 31, 2016			December 26, 2015
Balance as of beginning of period	$	4,504		$	2,953
Accruals for warranties issued during period		4,509			8,332
Settlements during the period		(5,175	)		(6,781	)
Balance as of end of period	$	3,838		$	4,504