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Commitments and Contingencies - Summary of Future Minimum Rental Commitments under Non-Cancelable Operating Leases (Detail) (USD $)
In Thousands, unless otherwise specified
Dec. 31, 2013
Commitments And Contingencies Disclosure [Abstract]  
2014 $ 1,425
2015 644
2016 131
2017 108
2018 and thereafter $ 99