Guarantees (Tables)

3 Months Ended

Mar. 29, 2014

Commitments And Contingencies Disclosure [Abstract]

Changes in Accrued Warranty

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

	Three Months Ended
	March 29, 2014			March 30, 2013
Balance at beginning of period	$	5,252		$	4,692
Warranty expense accruals		1,211			240
Warranty payments		(1,549	)		(1,409	)
Warranty liability assumed from Ismeca acquisition		—			1,817
Balance at end of period	$	4,914		$	5,340