Other Intangible Assets Other Intangible Assets (Details Textuals) - USD ($) $ in Millions	12 Months Ended
	Dec. 27, 2016	Dec. 29, 2015	Dec. 30, 2014
Finite-Lived Intangible Assets [Line Items]
Amortization of Intangible Assets	$ 8.6	$ 8.7	$ 8.7
Finite-Lived Intangible Assets, Amortization Expense, Next Twelve Months	8.7
Finite-Lived Intangible Assets, Amortization Expense, Year Two	8.6
Finite-Lived Intangible Assets, Amortization Expense, Year Three	8.2
Finite-Lived Intangible Assets, Amortization Expense, Year Four	7.2
Finite-Lived Intangible Assets, Amortization Expense, Year Five	6.0
Finite-Lived Intangible Assets, Amortization Expense, after Year Five	$ 16.1