Annual report pursuant to Section 13 and 15(d)

Summary of Activity with NCM (Parenthetical) (Detail)

v2.4.0.6
Summary of Activity with NCM (Parenthetical) (Detail) (USD $)
In Thousands, unless otherwise specified
12 Months Ended
Dec. 31, 2012
Dec. 31, 2011
Dec. 31, 2010
Schedule of Equity Method Investments [Line Items]      
Company's beverage concessionaire $ 11,063 $ 10,733 $ 10,156