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Commitments and Contingencies - Future Minimum Lease Payments Under Non-cancelable Operating Leases (Details)
$ in Thousands
Sep. 30, 2017
USD ($)
Operating Leases Future Minimum Payments Due [Abstract]  
2017 (remainder of year) $ 1,263
2018 5,089
2019 5,108
2020 1,178
2021 406
Thereafter 2,541
Total $ 15,585