Federal Income Tax - Federal Income Tax (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Income Tax Disclosure [Abstract]
Current	$ 11,081	$ (46,861)	$ (7,843)
Deferred	5,168	(9,948)	9,902
Consolidated federal income tax expense (benefit)	$ 16,249	$ (56,809)	$ 2,059