Stock-Based Compensation Stock Based Compensation Expense Allocation (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 25, 2016	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Allocated Share-based Compensation Expense	$ 3,690		$ 2,807	$ 2,315
Employee Service Share-based Compensation, Tax Benefit from Compensation Expense	(1,361)	$ (1,044)	(740)
Allocated Share-based Compensation Expense, Net of Tax	2,329		1,763	$ 1,575
Cost of Sales [Member]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Allocated Share-based Compensation Expense	472	370	113
Selling, General and Administrative Expenses [Member]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Allocated Share-based Compensation Expense	$ 3,218	$ 2,437	$ 2,202