Income Taxes (Summary of Uncertain Tax Positions Included in Income Tax Provision) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Income Taxes [Abstract]
Current (provision) benefit for UTPs	$ (257)	$ (244)	$ (753)	$ (1,052)
Deferred benefit (provision) for UTPs	52	50	115	222
Tax (provision) benefit for UTPs	$ (205)	$ (194)	$ (638)	$ (830)