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Commitments and Contingencies - Summary of Fixed and Determinable Payments (Detail) (USD $)
In Thousands, unless otherwise specified
Jun. 30, 2013
Commitments And Contingencies Disclosure [Abstract]  
Remaining 2013 $ 5,405
2014 3,768
2015 1,826
2016 1,276
2017 1,080
Thereafter   
Total $ 13,355