Commitments and Contingencies - Future Minimum Lease Payments (Details) $ in Thousands	Sep. 30, 2017 USD ($)
Capital Leases
2017 (3 months remaining)	$ 63
2018	252
2019	252
2020	60
2021 and beyond	0
Total minimum lease payments	627
Less: amount representing interest	(39)
Present value of capital lease obligations	588
Less: current portion	(228)
Long-term portion of capital leases	360
Operating Leases
2017 (3 months remaining)	776
2018	3,185
2019	3,280
2020	712
2021 and beyond	531
Total minimum lease payments	$ 8,484