Leases - Balance Sheet Classification and Other Information (Details) - USD ($) $ in Thousands	Sep. 30, 2020	Dec. 31, 2019
Balance Sheet Classification [Abstract]
Long-term lease liabilities	$ 4,335	$ 5,742
Total operating lease liabilities	$ 6,793
Other Information [Abstract]
Weighted-average remaining term for operating leases	5 years 1 month 24 days
Weighted-average discount rate for operating leases	8.77%
Accounts Payable and Accrued Liabilities [Member]
Balance Sheet Classification [Abstract]
Current lease liabilities (recorded in Accrued expenses and other current liabilities)	$ 2,458