Financial Statement Components - Components of Accumulated Other Comprehensive Income (Loss) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 26, 2015	Dec. 27, 2014	Dec. 28, 2013
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning of period	$ (2,769)	$ 612
Current period change	(2,433)	(3,381)	$ (660)
End of period	(5,202)	(2,769)	612
Foreign Currency Translations [Member]
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning of period	(2,604)	635
Current period change	(2,344)	(3,239)
End of period	(4,948)	(2,604)	635
Defined Benefit Pension Plans [Member]
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning of period	(134)	(28)
Current period change	(76)	(106)
End of period	(210)	(134)	(28)
Unrealized Income (Loss) on Investment [Member]
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning of period	(31)	5
Current period change	(13)	(36)
End of period	$ (44)	$ (31)	$ 5