Intangible Assets (Tables)

3 Months Ended

Mar. 30, 2013

Intangible Assets, Net (Excluding Goodwill) [Abstract]

Summary of Finite-lived intangible assets

	Adjusted cost as of		Accumulated amortization as of			Net carrying amount as of
	March 30, 2013		March 30, 2013			March 30, 2013
Developed technology	$	17,482	$	(8,871	)	$	8,611
Customer relationships	9,510		(8,800		)	710
Brand names	1,927		(1,625		)	302
Patented technology	2,252		(1,939		)	313
Trademark	80		(78		)	2
Total	$	31,251	$	(21,313	)	$	9,938

	Adjusted cost as of December 29, 2012		Accumulated amortization as of December 29, 2012			Net carrying amount as of December 29, 2012
Developed technology	$	17,700	$	(8,277	)	$	9,423
Customer relationships	9,538		(8,643		)	895
Brand names	1,927		(1,599		)	328
Patented technology	2,252		(1,922		)	330
Trademark	80		(76		)	4
Total	$	31,497	$	(20,517	)	$	10,980