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Financial Instruments - Cash and Cash Equivalents and Investments from Continuing Operations (Detail) (USD $)
In Thousands, unless otherwise specified
Sep. 30, 2013
Dec. 31, 2012
Sep. 30, 2012
Jan. 01, 2012
Cash And Cash Equivalents [Abstract]        
Cash $ 19,062 $ 112,759    
Money market funds 11,862 121    
Cash and cash equivalents, unrestricted 30,924 112,880 133,145 125,924
Restricted cash 12,564 97,878    
Total cash and cash equivalents $ 43,488 $ 210,758