Leases - Summary of Weighted-Average Remaining Lease Term and Discount Rate (Details) - USD ($) $ in Thousands	6 Months Ended	12 Months Ended
	Jun. 30, 2021	Dec. 31, 2020
Cash paid for amounts included in the measurement of lease liabilities
Operating cash flows for operating leases	$ 1,141	$ 703
Right-of-use assets obtained in exchange for lease obligations	$ 35	$ 17,899
Weighted-average remaining lease term (years)	9 years 1 month 6 days	9 years 7 months 6 days
Weighted-average discount rate	9.40%	9.40%