Income Taxes - Unrecognized Tax Benefits (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 30, 2012	Dec. 25, 2011	Dec. 26, 2010
Income Tax Disclosure [Abstract]
Balance at beginning of year	$ 47,971	$ 55,636	$ 70,578
Gross additions based on tax positions related to the current year	5,241	4,094	2,565
Gross reductions to tax positions current year	0	0	0
Gross additions to tax positions prior year	258	460	0
Gross reductions to tax positions of prior year	(922)	(970)	(13,347)
Reductions from settlements with taxing authorities	0	(1,941)	0
Reductions from lapse of applicable statutes of limitations	(7,240)	(9,308)	(4,160)
Balance at end of year	$ 45,308	$ 47,971	$ 55,636