Guarantees (Tables)

6 Months Ended

Jun. 28, 2014

Commitments And Contingencies Disclosure [Abstract]

Changes in Accrued Warranty

Changes in accrued warranty were as follows (in thousands):

	Three Months Ended						Six Months Ended
	June 28, 2014			June 29, 2013			June 28, 2014			June 29, 2013
Balance at beginning of period	$	4,816		$	5,255		$	5,155		$	4,602
Warranty expense accruals		1,137			1,921			2,327			2,166
Warranty payments		(1,371	)		(1,457	)		(2,900	)		(2,866	)
Warranty liability assumed		—			—			—			1,817
Balance at end of period	$	4,582		$	5,719		$	4,582		$	5,719