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General - Additional information (Details) - USD ($) | 3 Months Ended | 9 Months Ended |
--- | --- | --- | ---
Sep. 30, 2021 | Sep. 24, 2020 | Sep. 30, 2021 | Sep. 24, 2020 | Dec. 31, 2020
Summary of Significant Accounting Policies [Line Items] |  |  |  |  |
Depreciation | $ 17,714,000 | $ 18,698,000 | $ 54,147,000 | $ 56,584,000 |
Proceeds from insurance policy loan | 6,700,000 |  | $ 6,700,000 |  |
Interest percentage on insurance loan |  |  | 8.00% |  |
Reimbursement towards insurance policy | $ 11,400,000 |  |  |  |
Percentage Of Cash Dividends |  |  | 110.00% |  |
Shares related to the convertible notes were excluded from the computation of diluted earnings per share | 9,085,000 |  |  |  |
Deferred Revenue | $ 37,377,000 |  | $ 37,377,000 |  | $ 37,307,000
Contract assets | 0 |  | 0 |  | 0
Deferred Revenue, Revenue Recognized |  |  | 8,394,000 | 12,444,000 |
Remaining Performance Obligation Related to Advanced Ticket Sales | 4,380,000 |  | 4,380,000 |  |
Remaining Performance Obligation Related to Hotels Gift Cards |  |  | 2,998,000 |  |
Trade names |  |  |  |  |
Summary of Significant Accounting Policies [Line Items] |  |  |  |  |
Impairment charge |  |  |  | $ 2,200,000 |
Fair Value, Inputs, Level 1 [Member] |  |  |  |  |
Summary of Significant Accounting Policies [Line Items] |  |  |  |  |
Trading Securities, Fair Value Disclosure | 4,139,000 |  | 4,139,000 |  | 1,415,000
Fair Value, Inputs, Level 2 [Member] |  |  |  |  |
Summary of Significant Accounting Policies [Line Items] |  |  |  |  |
Fair value of the interest rate swaps, liabilities | $ 885,000 |  | $ 885,000 |  | $ 1,470,000

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