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Commitments and Contingencies - Schedule of Future Minimum Rental Payments (Details) - USD ($)
$ in Thousands
Sep. 30, 2017
Dec. 31, 2016
Commitments and Contingencies Disclosure [Abstract]    
2017 $ 84 $ 335
2018 341 341
2019 347 347
2020 353 353
2021 59 59
Thereafter 0 0
Total $ 1,184 $ 1,435