Fair Value Measurements (Details) (USD $) In Millions, unless otherwise specified	Dec. 26, 2014	Dec. 27, 2013
Assets
Long-lived assets held for sale	$ 1.7	$ 1.9
Oaktree Term A Loan [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans Payable, Fair Value Disclosure	78.3
Oaktree Term B Loan [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans Payable, Fair Value Disclosure	44.4
Fair Value, Measurements, Recurring [Member]
Assets
Long-lived assets held for sale		1.9
Total		1.9
Fair Value, Measurements, Recurring [Member] | Quoted Prices In Active markets for Identical Assets (Level 1) [Member]
Assets
Long-lived assets held for sale		0
Total		0
Fair Value, Measurements, Recurring [Member] | Significant Other Observable Inputs (Level 2) [Member]
Assets
Long-lived assets held for sale		0
Total		0
Fair Value, Measurements, Recurring [Member] | Significant Unobservable Inputs (Level 3) [Member]
Assets
Long-lived assets held for sale		1.9
Total		$ 1.9