Leases - Summary of Lease Cost (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Leases [Abstract]
Operating lease cost	$ 1,258	$ 946	$ 401
Variable lease cost	665	331	198
Total lease cost	$ 1,923	$ 1,277	$ 599