Income Taxes Domestic Tax Components (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Federal
Current	$ 722	$ (3,396)	$ (6,076)
Deferred	2,626	(4,006)	(15,169)
Investment tax credits	(130)	(3)	(12)
State
Current	2,172	3	27
Deferred	(1,971)	(3,568)	1,305
Income Tax Expense (Benefit)	$ 3,419	$ (10,970)	$ (19,925)