Leases Cash Flow, Operating Activities, Lessee (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Leases [Abstract]
Operating Lease, Payments	$ 2,821	$ 2,457
Finance Lease, Interest Payment on Liability	31	29
Right-of-Use Asset Obtained in Exchange for Operating Lease Liability	1,095	19,094
Right-of-Use Asset Obtained in Exchange for Finance Lease Liability	$ 184	$ 800