Investment in National CineMedia LLC - Additional Information (Detail) - USD ($)			12 Months Ended
		Apr. 14, 2021	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Schedule Of Equity Method Investments [Line Items]
Number of additional common units of NCM received under common unit adjustment agreement		2,311,482
Value of common units received from NCM		$ (10,237,000)	$ 10,237,000	$ 3,620,000	$ 1,552,000
Interest in common units of NCM acquired by Company			26.00%
Number of common units of NCM owned by Company			43,161,550
Impairment of long-lived and other assets			$ 20,845,000	152,706,000	57,001,000
Investment In Ncm [Member]
Schedule Of Equity Method Investments [Line Items]
Estimated fair value of investment using NCM's stock price			$ 121,284,000
NCMI common stock price			$ 2.81
Carrying value			$ 135,444,000	151,962,000	265,792,000	$ 275,592,000
Impairment of long-lived and other assets	[1]			(92,655,000)
Deferred revenue or NCM screen advertising advances extended term			2041-02
Ncm [Member]
Schedule Of Equity Method Investments [Line Items]
Remaining performance obligations			$ 174,000,000
Deferred revenue amortization year and month			2041-02
Carrying value			$ 135,444,000	151,962,000
Impairment of long-lived and other assets			$ 0	92,655,000
Ncm [Member] | Minimum [Member]
Schedule Of Equity Method Investments [Line Items]
Percentage Of Incremental Borrowing Rates			4.40%
Ncm [Member] | Maximum [Member]
Schedule Of Equity Method Investments [Line Items]
Percentage Of Incremental Borrowing Rates			8.30%
Ncm [Member] | Theatre Properties and Equipment
Schedule Of Equity Method Investments [Line Items]
Payment for installation of certain equipment used for digital advertising			$ 8,000	$ 9,000	$ 61,000

[1] Recorded in impairment of long-lived and other assets on the consolidated income statement for the year ended December 31, 2020. See further discussion at Fair Value of Investment in NCM below. (3) Excess cash distributions from NCM decreased beginning in the second quarter of 2020 primarily as a result of the impact of the COVID-19 discussed at Note 3. Excess cash distributions will be restricted through December 2023 in accordance with the credit agreement amendment NCM recently entered into with its lenders.