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General - Additional information (Details) - USD ($) | 3 Months Ended | 9 Months Ended |
--- | --- | --- | ---
Sep. 24, 2020 | Sep. 26, 2019 | Sep. 24, 2020 | Sep. 26, 2019 | Dec. 26, 2019
Summary of Significant Accounting Policies [Line Items] |  |  |  |  |
Depreciation | $ 18,698,000 | $ 19,194,000 | $ 56,584,000 | $ 53,433,000 |
Percentage Of Cash Dividends |  |  | 110.00% |  |
Deferred Revenue | 36,347,000 |  | $ 36,347,000 |  | $ 43,200,000
Contract assets | 0 |  | 0 |  | 0
Deferred Revenue, Revenue Recognized |  |  | 12,444,000 |  |
Remaining Performance Obligation Related to Advanced Ticket Sales | 4,631,000 |  | 4,631,000 |  |
Remaining Performance Obligation Related to Hotels Gift Cards |  |  | 2,679,000 |  |
Fair Value, Inputs, Level 1 [Member] |  |  |  |  |
Summary of Significant Accounting Policies [Line Items] |  |  |  |  |
Trading Securities, Fair Value Disclosure | 1,059,000 |  | 1,059,000 |  | 5,825,000
Fair Value, Inputs, Level 2 [Member] |  |  |  |  |
Summary of Significant Accounting Policies [Line Items] |  |  |  |  |
Interest Rate Fair Value Hedge Liability at Fair Value | $ 1,890,000 |  | $ 1,890,000 |  | $ 1,194,000

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