Stock-Based Compensation Stock Based Compensation Expense Allocation (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013	Dec. 30, 2012
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Allocated Share-based Compensation Expense		$ 2,807	$ 2,315	$ 2,685
Employee Service Share-based Compensation, Tax Benefit from Compensation Expense	$ 1,044	(740)	(762)
Allocated Share-based Compensation Expense, Net of Tax		1,763	1,575	$ 1,923
Share-based Compensation Expense, Executive Separation Agreement		700
Cost of Sales [Member]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Allocated Share-based Compensation Expense	370	113	214
Selling, General and Administrative Expenses [Member]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Allocated Share-based Compensation Expense	$ 2,437	$ 2,202	$ 2,471