Leases Leases - Lease Cost Additional Information (Details) - USD ($) $ in Thousands	3 Months Ended				9 Months Ended
	Sep. 30, 2020		Sep. 30, 2019		Sep. 30, 2020	Sep. 30, 2019
Lease, Cost [Abstract]
Operating Lease, Cost	$ 627	[1]	$ 638	[1]	$ 1,882	$ 1,926	[1]
Finance Lease, Right-of-Use Asset, Amortization	0				0
Finance Lease, Principal Payments					0	650
Finance Lease, Interest Expense	0				0	5
Lease, Cost	$ 627		$ 638		$ 1,882	$ 2,581

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