Consolidated Statements Of Comprehensive Income - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Statement of Comprehensive Income [Abstract]
Net Income (Loss)	$ 23,903	$ 67,020
Other comprehensive loss, before income tax:
Accumulated postretirement benefit obligation adjustment	228	0
Unrealized losses on investments arising during the period	(4,342)	(1,376)
Reclassification adjustment for sale of securities included in net income	104	(19)
Reclassification adjustment for write-down of securities included in net income	172	0
Other comprehensive loss, before income tax	(3,838)	(1,395)
Income tax expense related to postretirement health benefits	48	0
Income tax benefit related to net unrealized losses on investments arising during the year	(921)	(291)
Income tax expense (benefit) related to reclassification adjustment for sale of securities included in net income	22	(4)
Income tax expense related to reclassification adjustment for write-down of securities included in net income	39	0
Net income tax benefit on other comprehensive loss	(812)	(295)
Other comprehensive loss	(3,026)	(1,100)
Comprehensive Income	$ 20,877	$ 65,920