Leases Leases - Lease Cost Additional Information (Details) - USD ($) $ in Thousands		3 Months Ended		9 Months Ended
		Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Lease, Cost [Abstract]
Operating Lease, Cost	[1]	$ 515	$ 627	$ 1,553	$ 1,882

[1] (1) Includes short-term leases and variable lease costs, which are immaterial