Consolidated Statements of Comprehensive Income (Loss) (Unaudited) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Statement Of Income And Comprehensive Income [Abstract]
Net income (loss)	$ (8,399)	$ 5,552	$ (11,269)	$ 916
Unrealized investment gains (losses):
Unrealized investment gains (losses) during the period	(5,007)	394	(12,294)	(1,530)
Income tax (benefit) expense	0	0	0	0
Unrealized investment gains (losses), net of tax	(5,007)	394	(12,294)	(1,530)
Less: reclassification adjustments to:
Net realized investment gains (losses) included in net income (loss)	70	(902)	70	41
Income tax (benefit) expense	0	0	0	0
Total reclassifications included in net income (loss), net of tax	70	(902)	70	41
Other comprehensive income (loss)	(5,077)	1,296	(12,364)	(1,571)
Total comprehensive income (loss)	$ (13,476)	$ 6,848	$ (23,633)	$ (655)