Leases (Supplemental Cash Flow Information) (Details) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019
Leases [Abstract]
Cash paid for amounts included in the measurement of operating leases liabilities	$ 14,619	$ 14,878
Right-of-use assets obtained in exchange for operating lease obligations, net of early lease terminations	$ 17,064	$ 7,870