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Commitments and Contingencies - Schedule of Future Minimum Lease Payments Under Noncancelable Operating Leases (Detail) (USD $)
In Thousands, unless otherwise specified
Dec. 31, 2013
Commitments And Contingencies Disclosure [Abstract]  
2014 $ 5,095
2015 5,208
2016 5,354
2017 5,470
2018 and thereafter $ 8,399