Comprehensive Loss - Components of Accumulated Other Comprehensive Loss (Detail) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 28, 2013	Dec. 29, 2012	Dec. 31, 2011
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Total accumulated other comprehensive loss	$ (2,228)	$ (2,195)	$ (1,261)
Other comprehensive loss before reclassifications	(1,092)	108	(1,344)
Amounts reclassified from accumulated other comprehensive loss	(166)	(141)	410
Net current-period other comprehensive loss	(1,258)	(33)	(934)
Total accumulated other comprehensive loss	(3,486)	(2,228)	(2,195)
Unrealized Gain on Auction Rate Securities
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Total accumulated other comprehensive loss	166	307	(103)
Other comprehensive loss before reclassifications	0	0	0
Amounts reclassified from accumulated other comprehensive loss	(166)	(141)	410
Net current-period other comprehensive loss	(166)	(141)	410
Total accumulated other comprehensive loss	0	166	307
Unrealized Gain on Other Available-for-Sale Securities
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Total accumulated other comprehensive loss	16	(142)	(37)
Other comprehensive loss before reclassifications	(140)	158	(105)
Amounts reclassified from accumulated other comprehensive loss	0	0	0
Net current-period other comprehensive loss	(140)	158	(105)
Total accumulated other comprehensive loss	(124)	16	(142)
Foreign Currency Translation
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Total accumulated other comprehensive loss	(1,650)	(1,607)	(490)
Other comprehensive loss before reclassifications	(952)	(43)	(1,117)
Amounts reclassified from accumulated other comprehensive loss	0	0	0
Net current-period other comprehensive loss	(952)	(43)	(1,117)
Total accumulated other comprehensive loss	(2,602)	(1,650)	(1,607)
Accumulated Tax Effect
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Total accumulated other comprehensive loss	(760)	(753)	(631)
Other comprehensive loss before reclassifications	0	(7)	(122)
Amounts reclassified from accumulated other comprehensive loss	0	0	0
Net current-period other comprehensive loss	0	(7)	(122)
Total accumulated other comprehensive loss	$ (760)	$ (760)	$ (753)