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Cash and Cash Equivalents and Investments - Cash and Cash Equivalents and Investments from Continuing Operations (Detail) (USD $)
In Thousands, unless otherwise specified
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2011
Dec. 31, 2010
Cash And Cash Equivalents [Abstract]        
Cash $ 155,938 $ 112,763    
Money market funds 163,005 121    
Cash and cash equivalents, unrestricted 318,943 112,884 171,221 172,537
Restricted cash 12,564 97,878    
Total cash and cash equivalents $ 331,507 $ 210,762