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Debt - Issuance of 7.00% Senior Secured Notes due 2019 (Details) |  |  |  | 1 Months Ended | 3 Months Ended | 12 Months Ended |  |  |
--- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Nov. 23, 2016 USD ($) | Sep. 22, 2015 USD ($) | May 14, 2014 USD ($) | May 31, 2014 USD ($) | Dec. 31, 2017 USD ($) | Dec. 30, 2018 USD ($) | Dec. 31, 2017 USD ($) | Dec. 25, 2016 USD ($) | Nov. 30, 2017 USD ($) | Sep. 12, 2017 USD ($) | Aug. 21, 2015 USD ($)
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |
Principal |  |  |  |  | $ 300,800,000.0 | $ 300,000,000 | $ 300,800,000.0 |  |  |  |
Proceeds from the issuance of long-term debt, net of issuance costs |  |  |  |  |  | 0 | 300,000,000 | $ 0 |  |  |
Gain (loss) on extinguishment of debt |  |  |  |  |  | 0 | (17,300,000) | 200,000 |  |  |
Revolving Credit Facility |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |
Credit agreement borrowings |  |  |  | $ 41,000,000 |  |  |  |  |  |  |
Outstanding borrowings |  |  |  |  |  | $ 0 |  |  |  |  | $ 41,000,000
Maximum borrowing capacity |  |  | $ 110,000,000.0 |  |  |  |  |  |  |  | $ 110,000,000.0
Senior notes | 7% Senior Notes due 2019 |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |
Stated interest rate |  |  |  | 7.00% |  | 7.00% |  |  |  |  |
Principal |  |  |  | $ 625,000,000.0 |  | $ 300,000,000 |  |  |  |  |
Proceeds from the issuance of long-term debt, net of issuance costs |  |  | 618,500,000 |  |  |  |  |  |  |  |
Original issue discount |  | $ 1,400,000 | 6,500,000 |  | 1,600,000 |  | 1,600,000 | 100,000 |  |  |
Debt issuance costs |  |  | $ 8,800,000 |  |  |  |  |  |  |  |
Reacquisition price |  | 175,000,000 |  |  |  |  |  |  | $ 385,200,000 | $ 135,500,000 |
Write off of unamortized issue costs |  | 1,800,000 |  |  |  |  | 2,300,000 | 100,000 |  |  |
Unamortized premium |  |  |  |  |  |  |  |  | $ 12,000,000 |  |
Gain (loss) on extinguishment of debt |  | (3,400,000) |  |  | $ (15,200,000) |  | (17,300,000) | 200,000 |  |  |
Fixed charge coverage ratio |  |  |  | 2.0 |  |  |  |  |  |  |
Legal fees |  | $ 200,000 |  |  |  |  |  |  |  |  |
Debt repurchased and extinguished | $ 14,500,000 |  |  |  |  |  | 435,500,000 | 14,500,000 |  |  |
Gain (loss) on extinguishment of debt before amortization of issuance cost and discount |  |  |  |  |  |  | $ (13,400,000) | $ 400,000 |  |  |
Senior notes | 10% Senior Notes due June 2017 |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |
Stated interest rate |  |  |  | 10.00% |  |  |  |  |  |  |
Principal |  |  |  | $ 625,000,000.0 |  |  |  |  |  |  |
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) |  |  |  |  |  |  |

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