Quarterly report pursuant to Section 13 or 15(d)

Investment in National CineMedia LLC - Additional Information (Detail)

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Investment in National CineMedia LLC - Additional Information (Detail)
$ / shares in Units, $ in Thousands
3 Months Ended
Mar. 31, 2021
USD ($)
$ / shares
shares
Schedule Of Equity Method Investments [Line Items]  
Number of additional common units of NCM receive under common unit adjustment agreement | shares 2,311,482
Number of common units of NCM owned by Company | shares 40,850,068
Interest in common units of NCM owned by Company 25.00%
NCM  
Schedule Of Equity Method Investments [Line Items]  
Remaining performance obligations $ 174,000
Recognized incremental screen rental revenue and offsetting interest expense 5,835
Amortization of screen advertising advances $ 7,851
NCM | Minimum  
Schedule Of Equity Method Investments [Line Items]  
Percentage of incremental borrowing rates 4.40%
NCM | Maximum  
Schedule Of Equity Method Investments [Line Items]  
Percentage of incremental borrowing rates 8.30%
Investment In NCM  
Schedule Of Equity Method Investments [Line Items]  
Common unit convertible into share of NCMI common stock, conversion ratio 1
Estimated fair value of investment using NCM's stock price $ 188,727
NCMI common stock price | $ / shares $ 4.62