Income Taxes - Provision (Benefit) for Income Taxes (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 26, 2015	Dec. 27, 2014
Current:
Federal	$ 697	$ 148	$ 358
State	85	3	(151)
Foreign	2,111	2,266	1,327
Total current	2,893	2,417	1,534
Deferred:
Federal	(16,641)	190	17,368
State	(320)	3	550
Foreign	(832)	53	45
Total deferred	(17,793)	246	17,963
Provision (benefit) for income taxes	$ (14,900)	$ 2,663	$ 19,497