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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

This item represents the entity's proportionate share for the period of the net income (loss) of its investee (such as unconsolidated subsidiaries and joint ventures) to which the equity method of accounting is applied. This item includes income or expense related to stock-based compensation based on the investor's grant of stock to employees of an equity method investee.

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