Income Taxes (Narrative) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Income Taxes [Abstract]
Income tax expense (benefit) on operations	$ 1,814	$ 1,450	$ (3,694)	$ 12,351
Effective income tax rate	21.30%	17.90%	24.30%	18.00%