Leases Leases - Lease Cost Additional Information (Details) - USD ($) $ in Thousands	3 Months Ended				6 Months Ended
	Jun. 30, 2020		Jun. 30, 2019		Jun. 30, 2020	Jun. 30, 2019
Lease, Cost [Abstract]
Operating Lease, Cost	$ 629	[1]	$ 654	[1]	$ 1,255	$ 1,288	[1]
Finance Lease, Right-of-Use Asset, Amortization	0		249		0
Finance Lease, Principal Payments					0	650
Finance Lease, Interest Expense	0		1		0	5
Lease, Cost	$ 629		$ 904		$ 1,255	$ 1,943

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