Leases - Balance Sheet Classification and Other Information (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Balance Sheet Classification [Abstract]
Long-term lease liabilities	$ 3,927	$ 5,742
Total operating lease liabilities	$ 6,630	$ 8,106
Other Information [Abstract]
Weighted-average remaining term for operating leases	4 years 10 months 10 days	5 years 9 months 7 days
Weighted-average discount rate for operating leases	8.78%	8.74%
Accounts Payable and Accrued Liabilities [Member]
Balance Sheet Classification [Abstract]
Current lease liabilities (recorded in Accrued expenses and other current liabilities)	$ 2,703	$ 2,364