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Long-Term Debt - Narrative (Details) |  | 3 Months Ended | 9 Months Ended |  |  |  |  |
--- | --- | --- | --- | --- | --- | --- | --- | ---
May 13, 2020 USD ($) | Sep. 23, 2020 USD ($) | Jun. 24, 2020 USD ($) | Sep. 23, 2020 USD ($) | May 26, 2021 USD ($) | Dec. 25, 2019 USD ($) | Sep. 25, 2019 USD ($) | Jun. 26, 2019 USD ($) | Dec. 26, 2018 USD ($)
Line of Credit Facility [Line Items] |  |  |  |  |  |  |  |  |
Liquidity covenant availability |  | $ 92,700,000 |  | $ 92,700,000 |  |  |  |  |
Interest rate swaps |  | (17,200,000) |  | (17,200,000) |  |  |  |  |
Unrealized losses remained in accumulated other comprehensive loss, net |  | 138,371,000 | $ 217,507,000 | 138,371,000 |  | $ 138,064,000 | $ 118,746,000 | $ 142,572,000 | $ 133,345,000
Other Nonoperating Income (Expense) |  |  |  |  |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |  |  |  |  |
Unrealized loss on derivatives |  | 7,800,000 |  | 3,700,000 |  |  |  |  |
Derivatives |  |  |  |  |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |  |  |  |  |
Interest rate swaps |  | (67,800,000) |  | (67,800,000) |  |  |  |  |
Reclassification |  |  | $ 7,400,000 | 7,354,000 |  |  |  |  |
Derivatives |  |  |  |  |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |  |  |  |  |
Reclassification |  |  |  | 2,097,000 |  |  |  |  |
Unrealized losses remained in accumulated other comprehensive loss, net |  | 60,474,000 |  | 60,474,000 |  |  |  |  |
Derivatives |  |  |  |  |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |  |  |  |  |
Reclassification |  | 300,000 |  | 552,000 |  |  |  |  |
Interest Rate Swap |  |  |  |  |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |  |  |  |  |
Expected reclassification within next twelve months |  |  |  | 3,900,000 |  |  |  |  |
Interest Rate Swap | Derivatives |  |  |  |  |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |  |  |  |  |
Expected reclassification within next twelve months |  |  |  | 400,000 |  |  |  |  |
2018 Swaps | Derivatives |  |  |  |  |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |  |  |  |  |
Unrealized losses remained in accumulated other comprehensive loss, net |  | 64,600,000 |  | $ 64,600,000 |  |  |  |  |
Senior Secured Revolver |  |  |  |  |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |  |  |  |  |
Line of credit facility, term |  |  |  | 5 years |  |  |  |  |
Line of credit facility, current borrowing capacity |  | 400,000,000 |  | $ 400,000,000 |  |  |  |  |
Accordion feature that allows increase in size of facility |  | 450,000,000 |  | 450,000,000 |  |  |  |  |
Outstanding amount under credit facility |  | 230,000,000.0 |  | 230,000,000.0 |  |  |  |  |
Availability under the credit facility |  | $ 152,700,000 |  | $ 152,700,000 |  |  |  |  |
Commitment fee, percent | 0.40% |  |  |  |  |  |  |  |
Capital expenditures restrictions | $ 10,000,000 |  |  |  |  |  |  |  |
Weighted-average interest rate |  | 3.16% |  | 3.16% |  | 3.47% |  |  |
Senior Secured Revolver | Interest Rate Swap |  |  |  |  |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |  |  |  |  |
Weighted-average interest rate |  | 4.85% |  | 4.85% |  | 3.99% |  |  |
Senior Secured Revolver | LIBOR |  |  |  |  |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |  |  |  |  |
Basis spread on variable rate debt (as a percent) | 3.00% |  |  |  |  |  |  |  |
Letter of Credit |  |  |  |  |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |  |  |  |  |
Line of credit facility, current borrowing capacity |  | $ 30,000,000 |  | $ 30,000,000 |  |  |  |  |
Outstanding amount of letters of credit |  | $ 17,300,000 |  | $ 17,300,000 |  |  |  |  |
Letter of Credit | Senior Secured Revolver | Minimum |  |  |  |  |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |  |  |  |  |
Liquidity requirement | $ 60,000,000 |  |  |  |  |  |  |  |
Letter of Credit | Senior Secured Revolver | Maximum | Forecast |  |  |  |  |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |  |  |  |  |
Liquidity requirement |  |  |  |  | $ 70,000,000 |  |  |  |
Letter of Credit | Senior Secured Revolver | Until Quarter Ending March 31, 2021 |  |  |  |  |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |  |  |  |  |
Fixed charge coverage ratio, minimum | 1.50 |  |  |  |  |  |  |  |
Covenant, leverage ratio | 4.50 |  |  |  |  |  |  |  |
Letter of Credit | Senior Secured Revolver | Before Amendment |  |  |  |  |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |  |  |  |  |
Covenant, leverage ratio | 4.00 |  |  |  |  |  |  |  |
Letter of Credit | Senior Secured Revolver | Second Quarter of 2021 |  |  |  |  |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |  |  |  |  |
Covenant, leverage ratio | 4.25 |  |  |  |  |  |  |  |
Letter of Credit | Senior Secured Revolver | Third Quarter 2021 and Thereafter |  |  |  |  |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |  |  |  |  |
Covenant, leverage ratio | 4.00 |  |  |  |  |  |  |  |

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