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Income Taxes (Schedule of Income Tax Expense) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Current:
Federal	$ (8,247)	$ (4,281)	$ (3,822)
State	1,467	2,598	2,246
Deferred:
Federal	933	(1,490)	(726)
State	431	(871)	(761)
Investment Tax Credits	(72)	(75)	(77)
Total Income Tax (Benefit) Expense	$ (5,488)	$ (4,119)	$ (3,140)

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