Leases - Summary of Additional Information Related to Leases (Details) $ in Thousands	9 Months Ended
	Sep. 30, 2019 USD ($)
Balance sheet information
ROU assets	$ 13,824
Lease liabilities, current	3,514
Lease liabilities, non-current	12,714
Total lease liabilities	$ 16,228
Supplemental data
Weighted average remaining lease term	4 years 3 months 29 days
Weighted average discount rate	7.00%
Cash paid for amounts included in lease liabilities	$ 2,648
ROU assets obtained in exchange for lease obligations	$ 17,726