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Investment in Marketable Securities - RealD (Details) (USD $)
In Thousands, except Share data, unless otherwise specified
 9 Months Ended
Sep. 30, 2012
Sep. 28, 2012
Dec. 31, 2011
Investment in Marketable Securities - RealD (Textual) [Abstract]      
Number of options to purchase common stock 1,222,780    
Exercise price of options, shares $ 0.00667    
Number of shares owned in RealD 1,222,780    
Estimated fair value of Company owned shares in RealD $ 10,932 $ 10,932 $ 9,709
Unrealized holding gain $ 1,223