Employee Benefit Plans (Defined Contribution Plans) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 29, 2012 Rate	Dec. 31, 2011	Dec. 25, 2010
Defined Contribution Plans [Line Items]
Percentage of Employees Covered	25.00%
Non-Collective-Bargaining Plan [Member]
Defined Contribution Plans [Line Items]
Percentage of Employees Covered	75.00%
Employer Matching Contribution, Percentage	1.00%
Employer Matching Contribution, Discretionary Percentage	2.00%
Maximum Annual Contribution Per Employee, Percentage	3.00%
Cost Recognized	$ 247
Collective-Bargaining Plan [Member]
Defined Contribution Plans [Line Items]
Percentage of Employees Covered	25.00%
Maximum Annual Contribution Per Employee, Percentage	2.75%
Cost Recognized	$ 78	$ 87	$ 107