Income Taxes (Schedule of Unrecognized Tax Benefits Roll Forward) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Income Taxes
Unrecognized Tax Benefits, Beginning Balance	$ 12,830	$ 10,162	$ 10,131
Increases related to current year tax positions	8,250	4,350	750
Increases related to prior year tax positions	2,095		2,198
Decreases related to prior year tax positions	(2,709)	(1,682)	(1,363)
Settlements with taxing authorities			(1,554)
Unrecognized Tax Benefits, Ending Balance	$ 20,466	$ 12,830	$ 10,162