Commitments and Contingencies Lease Liabilities Cash Activity (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Financing Lease Liability Activity
Finance Lease, Principal Payments	$ 281	$ 116	$ 478	$ 477
Right-of-Use Asset Obtained in Exchange for Operating Lease Liability	0	0	2,136	0
Right-of-Use Asset Obtained in Exchange for Finance Lease Liability	$ 291	$ 119	$ 494	$ 490