Debt Obligations - Interest Expense, Net (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2017	Sep. 24, 2017	Jun. 25, 2017	Mar. 26, 2017	Dec. 25, 2016	Sep. 25, 2016	Jun. 26, 2016	Mar. 27, 2016	Dec. 31, 2017	Dec. 25, 2016	Dec. 27, 2015
Debt Disclosure [Abstract]
Interest expense									$ 27,732	$ 39,487	$ 41,973
Amortization of debt costs and discount on debt									3,205	4,897	4,756
Capitalized interest									(1,257)	(559)	(338)
Interest income and other expense, net									(9,897)	(9,020)	(7,341)
Total interest expense and other, net	$ 4,665	$ 4,660	$ 5,133	$ 5,325	$ 7,850	$ 9,032	$ 9,097	$ 8,826	$ 19,783	$ 34,805	$ 39,050