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Investment in National CineMedia LLC - Additional Information (Detail) |  |  | 12 Months Ended |
--- | --- | --- | --- | ---
Jul. 05, 2018 USD ($) $ / shares shares | Feb. 13, 2007 USD ($) | Dec. 31, 2018 USD ($) $ / shares shares | Dec. 31, 2017 USD ($) | Dec. 31, 2016 USD ($) | Dec. 31, 2015 USD ($) $ / Theatre | Jul. 04, 2018
Schedule Of Equity Method Investments [Line Items] |  |  |  |  |  |  |
Theatre access fees per patron | $ / Theatre |  |  |  |  |  | 0.07 |
Increase in percentage of payment per theatre patron |  |  |  |  |  | 8.00% |
Duration of percentage increase in theatre access fees per patron |  |  |  |  |  | 5 years |
Payment per digital screen |  | $ 800,000 | $ 1,368,000 | $ 1,303,000 | $ 1,241,000 |  |
Percentage of annual increase in payment per digital screen |  |  |  |  |  | 5.00% |
Minimum percentage of aggregate advertising revenue for payment of fees |  |  | 12.00% |  |  |  |
Remaining term of exhibitor services agreement |  |  | 2037-02 |  |  |  |
Number of common units of NCM owned by Company | shares |  |  | 39,518,644 |  |  |  |
Interest in common units of NCM owned by Company |  |  | 25.00% |  |  |  |
NCM |  |  |  |  |  |  |
Schedule Of Equity Method Investments [Line Items] |  |  |  |  |  |  |
Interest in common units of NCM owned by Company | 25.00% |  |  |  |  |  | 18.00%
Investment in NCM |  |  | $ 275,592,000 | 200,550,000 |  |  |
Impairment of investments |  |  | 0 |  |  |  |
Number of common units of NCM acquired by Company | shares | 10,738,740 |  |  |  |  |  |
Value of common units in cash | $ 78,393,000 |  | 78,393,000 |  |  |  |
Common unit price per share | $ / shares | $ 7.30 |  |  |  |  |  |
NCM | Theatre Properties and Equipment |  |  |  |  |  |  |
Schedule Of Equity Method Investments [Line Items] |  |  |  |  |  |  |
Payment for installation of certain equipment used for digital advertising |  |  | 74,000 | 102,000 | 49,000 |  |
Investment In NCM |  |  |  |  |  |  |
Schedule Of Equity Method Investments [Line Items] |  |  |  |  |  |  |
Estimated fair value of investment using NCMI's stock price |  |  | $ 256,081,000 |  |  |  |
NCMI stock price | $ / shares |  |  | $ 6.48 |  |  |  |
Investment in NCM |  |  | $ 275,592,000 | $ 200,550,000 | $ 189,995,000 | $ 183,755,000 |
Value of common units in cash |  |  | $ 78,393,000 |  |  |  |

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