Summary of Activity with NCM Included in Company's Consolidated Financial Statements (Detail) - USD ($) $ in Thousands		3 Months Ended
		Mar. 31, 2021	Mar. 31, 2020
Schedule Of Equity Method Investments [Line Items]
Interest accrued on NCM screen advertising advances		$ (5,835)
Equity in loss		(6,806)	$ 8,486
Investment In NCM
Schedule Of Equity Method Investments [Line Items]
Beginning Balance		151,962
Receipt under tax receivable agreement		(156)
Equity in loss		(6,348)
Ending Balance		145,458
N C M Screen Advertising Advances
Schedule Of Equity Method Investments [Line Items]
Beginning Balance		(344,255)
Interest accrued on NCM screen advertising advances	[1]	(5,835)
Amortization of screen advertising advances		7,850
Ending Balance		(342,240)
Distributions from NCM
Schedule Of Equity Method Investments [Line Items]
Receipt under tax receivable agreement		(77)
Ending Balance		(77)
Equity in Loss
Schedule Of Equity Method Investments [Line Items]
Equity in loss		6,348
Ending Balance		6,348
Other Revenues
Schedule Of Equity Method Investments [Line Items]
Screen rental revenues earned under ESA	[2]	(855)
Amortization of screen advertising advances		(7,850)
Total Revenues		(8,705)
Interest Expense - NCM
Schedule Of Equity Method Investments [Line Items]
Interest accrued on NCM screen advertising advances		5,835
Ending Balance		5,835
Cash Received
Schedule Of Equity Method Investments [Line Items]
Screen rental revenues earned under ESA	[2]	855
Receipt under tax receivable agreement		233
Total Cash Received		$ 1,088

[1] See Note 9 for the maturity of balance as of March 31, 2021.

[2] 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 of approximately $370.