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Investment in National CineMedia - Additional Information (Detail) (USD $) In Thousands, except Share data, unless otherwise specified | 1 Months Ended | 3 Months Ended
--- | --- | ---
Mar. 31, 2014 | Mar. 31, 2014 | Mar. 31, 2013
Schedule of Equity Method Investments [Line Items] |  |  |
Equity earnings |  | $ 3,620 | $ 2,421
Number of additional common units of NCM received under common unit adjustment agreement | 557,631 |  |
Investment in NCM - receipt of common units | 8,216 | 8,216 | 8,869
Remaining term of exhibitor services agreement | 22 years |  |
Total number of common units of NCM owned by Company | 24,556,136 | 24,556,136 |
Interest on common units of NCM owned by Company | 19.00% | 19.00% |
NCM |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |
Equity earnings |  | $ 432 | $ 866

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