Summary of Activity with NCM Included in Company's Consolidated Financial Statements (Parenthetical) (Detail) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Schedule of Equity Method Investments [Line Items]
Company's beverage concessionaire advertising costs	$ 9,819	$ 11,489	$ 11,958

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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