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Commitments and Contingencies - Schedule of Minimum Principal Payments Due on Long-term Debt (Details)
$ in Thousands
Sep. 30, 2017
USD ($)
Commitments and Contingencies Disclosure [Abstract]  
2017 $ 1,094
2018 4,375
2019 4,375
2020 4,375
2021 4,375
Thereafter $ 155,312