Leases - Components of Lease Expense (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Leases [Abstract]
Operating lease cost	$ 1,541	$ 1,200	$ 4,424	$ 3,700
Short-term lease cost	83		187
Variable lease cost	508		1,388
Total lease expense	$ 2,132		$ 5,999