Consolidated Statements of Changes in Stockholders' Equity - USD ($) $ in Thousands	Total	Common stock	Paid-in capital	Treasury stock	Accumulated deficit	Accumulated other comprehensive loss
Balances (shares) at Dec. 29, 2012		115,500,000
Balances at Dec. 29, 2012	$ 357,550	$ 1,155	$ 621,170	$ 0	$ (264,514)	$ (261)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net (loss) income attributable to stockholders	22,321				22,321
Unrealized gain related to marketable securities, net of tax	284					284
Recognized loss on redemption of marketable securities, previously unrealized	337					337
Realized gain on sale of auction rate securities, previously unrealized, net of tax	0
Translation adjustments, net of tax	(505)					(505)
Common stock issued in connection with the exercise of stock options, ESPP and vested RSUs (net of taxes) (shares)		1,580,000
Common stock issued in connection with the exercise of stock options, ESPP and vested RSUs, net of tax	2,332	$ 16	2,316
Stock repurchase	(6,161)			(6,161)
Retirement of treasury stock (shares)		(1,409,000)
Retirement of treasury stock	0	$ (14)	(6,147)	6,161
Stock-based compensation expense related to options, ESPP and RSUs	9,522		9,522
Defined benefit pension, net of actuarial losses	0
Balances (shares) at Dec. 28, 2013		115,671,000
Balances at Dec. 28, 2013	385,680	$ 1,157	626,861	0	(242,193)	(145)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net (loss) income attributable to stockholders	48,580				48,580
Unrealized gain related to marketable securities, net of tax	(373)					(373)
Recognized loss on redemption of marketable securities, previously unrealized	170					170
Realized gain on sale of auction rate securities, previously unrealized, net of tax	(1,147)					(1,147)
Translation adjustments, net of tax	(330)					(330)
Common stock issued in connection with the exercise of stock options, ESPP and vested RSUs (net of taxes) (shares)		3,560,000
Common stock issued in connection with the exercise of stock options, ESPP and vested RSUs, net of tax	8,741	$ 35	8,706
Stock repurchase	(13,089)			(13,089)
Retirement of treasury stock (shares)		(1,943,000)
Retirement of treasury stock	0	$ (19)	(13,070)	13,089
Stock-based compensation expense related to options, ESPP and RSUs	12,802		12,802
Defined benefit pension, net of actuarial losses	$ (59)					(59)
Balances (shares) at Jan. 03, 2015	117,288,000	117,288,000
Balances at Jan. 03, 2015	$ 440,975	$ 1,173	635,299	0	(193,613)	(1,884)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net (loss) income attributable to stockholders	(159,233)				(159,233)
Unrealized gain related to marketable securities, net of tax	(69)					(69)
Recognized loss on redemption of marketable securities, previously unrealized	442					442
Realized gain on sale of auction rate securities, previously unrealized, net of tax	0
Translation adjustments, net of tax	(1,243)					(1,243)
Common stock issued in connection with the exercise of stock options, ESPP and vested RSUs (net of taxes) (shares)		2,415,000
Common stock issued in connection with the exercise of stock options, ESPP and vested RSUs, net of tax	2,186	$ 25	2,161
Stock repurchase	(6,970)			(6,970)
Retirement of treasury stock (shares)		(1,052,000)
Retirement of treasury stock	0	$ (11)	(6,959)	6,970
Stock-based compensation expense related to options, ESPP and RSUs	18,396		18,396
Fair value of partially vested stock options and RSUs assumed in acquisition	5,139		5,139
Defined benefit pension, net of actuarial losses	(156)					(156)
Redemption of noncontrolling interest	$ 6,053		6,053
Balances (shares) at Jan. 02, 2016	118,651,000	118,651,000
Balances at Jan. 02, 2016	$ 305,520	$ 1,187	$ 660,089	$ 0	$ (352,846)	$ (2,910)