Stock-Based Compensation Stock-Based Compensation Expense (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 23, 2012	Sep. 25, 2011	Sep. 23, 2012	Sep. 25, 2011
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Allocated Share-based Compensation Expense	$ 505	$ 616	$ 1,506	$ 1,791
Employee Service Share-based Compensation, Tax Benefit from Compensation Expense	(133)	0	(385)	0
Allocated Share-based Compensation Expense, Net of Tax	372	616	1,121	1,791
Cost of Sales [Member]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Allocated Share-based Compensation Expense	49	135	187	351
Selling, General and Administrative Expenses [Member]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Allocated Share-based Compensation Expense	$ 456	$ 481	$ 1,319	$ 1,440