Debt - Issuance of 7.00% Senior Secured Notes due 2019 (Details)		1 Months Ended	3 Months Ended					6 Months Ended
	May 14, 2014 USD ($)	May 31, 2014 USD ($)	Jul. 01, 2018 USD ($)	Dec. 31, 2017 USD ($)	Jun. 25, 2017 USD ($)	Mar. 26, 2017 USD ($)	Dec. 25, 2016 USD ($)	Jul. 01, 2018 USD ($)	Jun. 25, 2017 USD ($)	Nov. 30, 2017 USD ($)
Debt Instrument [Line Items]
Principal			$ 300,300,000	$ 300,800,000				$ 300,300,000
Gain (loss) on extinguishment of debt			$ 0		$ 0			$ 0	$ (2,100,000)
Revolving Credit Facility
Debt Instrument [Line Items]
Credit agreement borrowings		$ 41,000,000
Fixed charge coverage ratio	1.15
Senior notes | 7% Senior Notes due 2019
Debt Instrument [Line Items]
Stated interest rate			7.00%					7.00%
Principal		$ 625,000,000.0
Proceeds from the issuance of long-term debt, net of issuance costs	$ 618,500,000
Original issue discount	6,500,000			1,300,000		$ 300,000	$ 100,000
Debt issuance costs	$ 8,800,000
Reacquisition price						62,700,000	14,500,000			$ 385,200,000
Write off of unamortized issue costs				1,900,000		400,000	100,000
Unamortized premium										$ 12,000,000
Gain (loss) on extinguishment of debt				(15,200,000)		(2,100,000)	200,000
Fixed charge coverage ratio		2.0
Debt repurchased and extinguished				372,800,000
Gain (loss) on extinguishment of debt before amortization of issuance cost and discount				$ (12,000,000)		$ (1,400,000)	$ 400,000
Senior notes | 10% Senior Notes due June 2017
Debt Instrument [Line Items]
Stated interest rate		10.00%
Principal		$ 625,000,000
Reacquisition price		661,500,000
Early termination fee		31,200,000
Write off of unamortized issue costs		15,500,000
Unamortized premium		12,900,000
Interest accrued in escrow		5,300,000
Gain (loss) on extinguishment of debt		$ (39,100,000)