CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE LOSS (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 28, 2013	Sep. 29, 2012	Sep. 28, 2013	Sep. 29, 2012
Statement of Comprehensive Income [Abstract]
Net income (loss)	$ 3,347	$ (19,081)	$ (21,941)	$ (69,242)
Other comprehensive income (loss):
Unrealized gain (loss) on auction rate securities classified as available-for-sale investments	0	82	0	(143)
Reclassification of realized gain on auction rate securities	0	0	(166)	0
Unrealized gain (loss) on all other available-for-sale investments	44	69	(64)	189
Foreign currency translation adjustment	(98)	614	(1,016)	352
Tax related to available-for-sale investment	0	(18)	0	(19)
Net change in accumulated other comprehensive income (loss)	(54)	747	(1,246)	379
Comprehensive income (loss)	$ 3,293	$ (18,334)	$ (23,187)	$ (68,863)