Annual report pursuant to Section 13 and 15(d)

Summary of Activity with NCM Included in Company's Consolidated Financial Statements (Parenthetical) (Detail)

v3.20.4
Summary of Activity with NCM Included in Company's Consolidated Financial Statements (Parenthetical) (Detail) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Schedule Of Equity Method Investments [Line Items]      
Company's beverage concessionaire advertising costs $ 2,605 $ 11,478 $ 11,965
Screen Advertising Rental Revenue      
Schedule Of Equity Method Investments [Line Items]      
Revenues earned under ESA $ 4,828