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Commitments and Contingencies - Summary of Future Minimum Lease Payments (Details)
$ in Thousands
Dec. 31, 2016
USD ($)
Commitments and Contingencies Disclosure [Abstract]  
2017 $ 1,449
2018 1,373
2019 1,457
2020 1,339
2021 566
2022 and thereafter 45
Total minimum lease payments $ 6,229