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Commitments and Contingencies - Future Minimum Lease Payments (Detail)
$ in Thousands
Jun. 30, 2016
USD ($)
Commitments and Contingencies Disclosure [Abstract]  
June 30, 2016 to December 31, 2016 $ 151
2017 307
2018 182
2019 0
2020 0
Thereafter 0
Total $ 640