Income Taxes (Summary of Income Tax Benefit (Provision)) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Income Taxes [Abstract]
Current income tax provision	$ (340)	$ (547)
Deferred income tax benefit (provision)	562	(1,569)
Income tax benefit (provision)	$ 222	$ (2,116)