Income Taxes (Narrative) (Details) - USD ($) $ in Thousands	3 Months Ended			9 Months Ended
	Sep. 30, 2021	Jun. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Income Taxes [Abstract]
Effective tax rate				26.40%	9.50%
Income tax benefit (expense)	$ (895)	$ 5,600	$ (490)	$ 12,380	$ (5,070)