Income Taxes (Income Tax Expense (Benefit)) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Current:
Federal	$ 0	$ 0	$ 0
State	650	591	810
Total current income tax expense	650	591	810
Deferred:
Federal	78	930	114
State	599	(866)	574
Total deferred income tax expense	677	64	688
Income tax expense	$ 1,327	$ 655	$ 1,498