CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 27, 2014	Jun. 28, 2013	Jun. 27, 2014	Jun. 28, 2013
Net income (loss)	$ (37,062)	$ (3,800)	$ (42,472)	$ 2,621
Other comprehensive income (loss), net of tax:
Foreign currency translation adjustments	190	154	230	(470)
Loss on investments	(32)	(46)	(25)	(41)
Other comprehensive income (loss) before tax	158	108	205	(511)
Income tax benefit related to items of other comprehensive income (loss)	(4)	(9)	(5)	(12)
Other comprehensive income (loss), net of tax	162	117	210	(499)
Comprehensive income (loss)	$ (36,900)	$ (3,683)	$ (42,262)	$ 2,122