Summary of Activity with NCM Included in Company's Consolidated Financial Statements (Detail) - USD ($)		12 Months Ended
		Dec. 31, 2021		Dec. 31, 2020		Dec. 31, 2019
Schedule Of Equity Method Investments [Line Items]
Equity in income (loss) of affiliates		$ (25,045,000)		$ (38,745,000)		$ 41,870,000
Impairment of long-lived and other assets		(20,845,000)		(152,706,000)		(57,001,000)
NCM
Schedule Of Equity Method Investments [Line Items]
Beginning Balance		151,962,000
Beginning Balance		(344,255,000)
Interest accrued on NCM screen advertising advances		23,612,000		23,595,000		0
Impairment of long-lived and other assets		0		(92,655,000)
Ending Balance		135,444,000		151,962,000
Ending Balance		(346,026,000)		(344,255,000)
Investment In NCM
Schedule Of Equity Method Investments [Line Items]
Beginning Balance		151,962,000		265,792,000		275,592,000
Receipt of common units due to annual common unit adjustment		10,237,000		3,620,000		1,552,000
Receipt of excess cash distributions				(12,022,000)		(23,452,000)
Receipt under tax receivable agreement		(156,000)		(2,146,000)		(2,492,000)
Equity in income (loss) of affiliates		(26,599,000)		(10,627,000)		14,592,000
Impairment of long-lived and other assets	[1]			92,655,000
Ending Balance		135,444,000		151,962,000		265,792,000
NCM Screen Advertising Advances
Schedule Of Equity Method Investments [Line Items]
Beginning Balance		(344,255,000)		(348,354,000)		(350,242,000)
Receipt of common units due to annual common unit adjustment		10,237,000		(3,620,000)		(1,552,000)
Interest accrued on NCM screen advertising advances		(23,612,000)	[2]	(23,595,000)	[2]	(28,624,000)
Amortization of screen advertising advances		32,078,000		31,314,000		32,064,000
Ending Balance		(346,026,000)		(344,255,000)		(348,354,000)
NCM Screen Advertising Advances | NCM
Schedule Of Equity Method Investments [Line Items]
Receipt of common units due to annual common unit adjustment	[2]	10,237,000		3,620,000
Distributions from NCM
Schedule Of Equity Method Investments [Line Items]
Beginning Balance		(6,975,000)		(12,873,000)
Receipt of excess cash distributions				(5,914,000)		(11,631,000)
Receipt under tax receivable agreement		(77,000)		(1,061,000)		(1,242,000)
Ending Balance		(77,000)		(6,975,000)		(12,873,000)
Equity in [Earnings] Loss | NCM
Schedule Of Equity Method Investments [Line Items]
Beginning Balance		10,627,000		(14,592,000)
Equity in income (loss) of affiliates		26,599,000		10,627,000		(14,592,000)
Ending Balance		26,599,000		10,627,000		(14,592,000)
Other Revenue
Schedule Of Equity Method Investments [Line Items]
Total Revenues		(36,003,000)		(45,846,000)
Revenues earned under ESA	[3]	(12,001,000)		(4,689,000)		(13,782,000)
Total Revenues		(44,079,000)		(36,003,000)		(45,846,000)
Other Revenue | NCM
Schedule Of Equity Method Investments [Line Items]
Amortization of screen advertising advances		(32,078,000)		(31,314,000)		(32,064,000)
Interest Expense - NCM
Schedule Of Equity Method Investments [Line Items]
Beginning Balance		23,595,000		28,624,000.00
Interest accrued on NCM screen advertising advances		23,612,000		23,595,000		28,624,000
Ending Balance		23,612,000		23,595,000		28,624,000.00
Cash Received
Schedule Of Equity Method Investments [Line Items]
Total Cash Received		25,832,000		52,599,000
Revenues earned under ESA	[3]	12,001,000		4,689,000		13,782,000
Receipt of excess cash distributions				17,936,000		35,083,000
Receipt under tax receivable agreement		233,000		3,207,000		3,734,000
Total Cash Received		$ 12,234,000		$ 25,832,000		$ 52,599,000

[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.

[2] See Significant Financing Component in Note 8 for discussion of NCM screen advertising advances and maturity of balances as of December 31, 2021.

[3] Amounts include the per patron and per digital screen theatre access fees due to the Company, net of amounts due to NCM for on-screen advertising time provided to the Company’s beverage concessionaire. The amounts due to NCM for on-screen advertising time provided to the Company’s beverage concessionaire were approximately $11,478, $2,605 and $4,952 for the years ended December 31, 2019, 2020 and 2021, respectively. Amounts unpaid to the Company and recorded in accounts receivable on the consolidated balance sheets were $636 and $4,498 as of the years ended December 31, 2020 and 2021, respectively.