Leases (Supplemental Cash Flow Information Related to Leases) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Leases [Abstract]
Operating cash flows from operating leases	$ 9,323	$ 6,397
Operating cash flows from operating leases	(3,918)	(5,489)
Operating cash flows from finance leases	8,263	10,732
Financing cash flows from finance leases	$ (3,568)	$ (3,401)