Debt Obligations - Interest Expense, Net (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended						6 Months Ended		12 Months Ended
	Jun. 30, 2013	Mar. 31, 2013	Dec. 30, 2012	Sep. 23, 2012	Jun. 24, 2012	Mar. 25, 2012	Jun. 30, 2013	Jun. 24, 2012	Dec. 30, 2012	Dec. 25, 2011
Debt Disclosure [Abstract]
Cash interest expense	$ 13,892				$ 14,434		$ 27,145	$ 28,796
Non-cash amortization of discount on debt	1,103				1,098		2,267	2,257
Capitalized interest	0				(7)		0	(14)
Interest income	(349)				(61)		(692)	(123)
Total interest expense, net	$ 14,646	$ 14,074	$ 16,402	$ 15,497	$ 15,464	$ 15,452	$ 28,720	$ 30,916	$ 62,815	$ 85,243