Leases (Supplemental Cash Flow Information) (Details) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020
Leases [Abstract]
Operating cash flows from operating leases	$ 21,869	$ 21,764
Right-of-use assets obtained in exchange for operating lease obligations	$ 9,274	$ 7,968