Accumulated Other Comprehensive Income Reclassification Out Of Accumulated Other Comprehensive Income (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Net realized gain (loss) on investments	$ 1,747	$ 321
Other-than-temporary impairment loss, debt securities, available-for-sale, recognized in earnings	0
Income (loss) before income taxes	7,793	17,315
Tax	(1,608)	(3,492)
Net income	6,185	13,823
Reclassification out of Accumulated Other Comprehensive Income
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Net income	0	18
Reclassification out of Accumulated Other Comprehensive Income | Unrealized Gains and Losses on Available-For-Sale Securities
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Net realized gain (loss) on investments	0	23
Other-than-temporary impairment loss, debt securities, available-for-sale, recognized in earnings	0	0
Income (loss) before income taxes	0	23
Tax	0	(5)
Net income	$ 0	$ 18