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Summary of Changes in Company's Investment in Digital Implementation Partners (Detail) (USD $)
In Thousands, unless otherwise specified
3 Months Ended 9 Months Ended
Sep. 30, 2013
Sep. 30, 2012
Sep. 30, 2013
Sep. 30, 2012
Schedule of Equity Method Investments [Line Items]        
Beginning balance     $ 23,012  
Equity in income 11,733 6,844 15,839 9,622
Equity in other comprehensive income (1,776)   (3,454)  
Ending balance 34,924   34,924  
Digital Cinema Implementation Partners LLC
       
Schedule of Equity Method Investments [Line Items]        
Beginning balance     23,012  
Cash contributions     2,759  
Equity in income     7,315 6,144
Equity in other comprehensive income     1,838  
Ending balance $ 34,924   $ 34,924