Accumulated Other Comprehensive Income (Loss) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
AOCI [Roll Forward]
Beginning of period balance			$ (739,380)
End of period balance	$ (800,933)		(800,933)
Accumulated other comprehensive income
AOCI [Roll Forward]
Beginning of period balance	(2,398)	$ 409	(73)	$ 314
Other comprehensive income (loss)	(3,413)	(129)	(5,738)	(34)
End of period balance	(5,811)	280	(5,811)	280
Tax on other comprehensive income (loss)	0	0
Net unrealized investment gains (losses):
AOCI [Roll Forward]
Beginning of period balance	(2,602)	(43)	(323)	(125)
Other comprehensive income (loss)	(580)	73	(2,856)	136
Amounts reclassified from accumulated other comprehensive income	(157)	0	(160)	19
Other comprehensive income (loss)	(737)	73	(3,016)	155
End of period balance	(3,339)	30	(3,339)	30
Foreign currency translation adjustments:
AOCI [Roll Forward]
Beginning of period balance	204	452	250	439
Other comprehensive income (loss)	(2,676)	(202)	(2,722)	(189)
End of period balance	$ (2,472)	$ 250	$ (2,472)	$ 250