Income Taxes - Provision for Income Taxes (Detail) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2017	Oct. 01, 2017	Jun. 25, 2017	Mar. 26, 2017	Dec. 31, 2018	Dec. 31, 2017	Dec. 25, 2016
Income Tax Disclosure [Abstract]
Federal									$ 3,714	$ 6,121	$ (5,017)
State									127	(390)	450
Foreign									(11,180)	(12,564)	(10,639)
Total current taxes									(7,339)	(6,833)	(15,206)
Federal									(919)	(4,387)	(1,199)
State									521	1,492	(332)
Foreign									1,446	2,853	3,397
Total deferred taxes									1,048	(42)	1,866
Income tax provision	$ (5,177)	$ 7,051	$ (4,795)	$ (3,370)	$ (11,754)	$ 3,355	$ 1,722	$ (198)	$ (6,291)	$ (6,875)	$ (13,340)