Commitments and Contingencies Lease Liabilities Cash Activity (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Financing Lease Liability Activity
Finance Lease, Principal Payments	$ 27	$ 414	$ 505	$ 891
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	$ 28	$ 425	$ 522	$ 915