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Commitments and Contingencies - Future Minimum Rental Payments under Non-cancellable Operating Leases (Detail)
$ in Thousands
Sep. 30, 2015
USD ($)
Commitments and Contingencies Disclosure [Abstract]  
2015 $ 83
2016 311
2017 278
2018 229
2019 207
2020 and thereafter 621
Operating leases, Total $ 1,729