Leases Supplemental Cash Flow Information (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Leases [Abstract]
Operating Lease, Payments	$ 13,612	$ 15,064
Right-of-Use Asset Obtained in Exchange for Operating Lease Liability	$ 5,612	$ 3,944