Debt Obligations - Interest Expense, Net (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 30, 2018	Sep. 30, 2018	Jul. 01, 2018	Apr. 01, 2018	Dec. 31, 2017	Sep. 24, 2017	Jun. 25, 2017	Mar. 26, 2017	Dec. 30, 2018	Dec. 31, 2017	Dec. 25, 2016
Debt Disclosure [Abstract]
Interest expense									$ 28,134	$ 27,732	$ 39,487
Amortization of debt costs and discount on debt									3,394	3,205	4,897
Capitalized interest									(452)	(1,257)	(559)
Interest income and other expense, net									(14,510)	(9,897)	(9,020)
Total interest expense and other, net	$ 3,127	$ 4,026	$ 4,536	$ 4,877	$ 4,665	$ 4,660	$ 5,133	$ 5,325	$ 16,566	$ 19,783	$ 34,805