Investments - Fair Value and Gross Unrealized Losses for Fixed Maturities Available-for-sale in Continuous Gross Unrealized Loss Position (Details) - USD ($) $ in Thousands	Jun. 30, 2022	Dec. 31, 2021
Schedule Of Available For Sale Securities [Line Items]
Fixed maturity securities, 12 months or less, Estimated Fair Value	$ 203,006	$ 68,233
Fixed maturity securities, 12 months or less, Gross Unrealized Losses	(22,906)	(1,058)
Fixed maturity securities, Longer than 12 months, Estimated Fair Value	9,710	10,194
Fixed maturity securities, Longer than 12 months, Gross Unrealized Losses	(1,199)	(176)
Fixed maturity securities, Total, Estimated Fair Value	212,716	78,427
Fixed maturity securities, Total, Gross Unrealized Losses	(24,105)	(1,234)
U.S. Government and Agencies
Schedule Of Available For Sale Securities [Line Items]
Fixed maturity securities, 12 months or less, Estimated Fair Value	2,998
Fixed maturity securities, 12 months or less, Gross Unrealized Losses	(226)
Fixed maturity securities, Total, Estimated Fair Value	2,998
Fixed maturity securities, Total, Gross Unrealized Losses	(226)
U.S. Agency Mortgage-backed
Schedule Of Available For Sale Securities [Line Items]
Fixed maturity securities, 12 months or less, Estimated Fair Value	5,697	294
Fixed maturity securities, 12 months or less, Gross Unrealized Losses	(362)	(5)
Fixed maturity securities, Longer than 12 months, Estimated Fair Value	89	11
Fixed maturity securities, Longer than 12 months, Gross Unrealized Losses	(13)
Fixed maturity securities, Total, Estimated Fair Value	5,786	305
Fixed maturity securities, Total, Gross Unrealized Losses	(375)	(5)
State and Political Subdivisions
Schedule Of Available For Sale Securities [Line Items]
Fixed maturity securities, 12 months or less, Estimated Fair Value	40,539	20,439
Fixed maturity securities, 12 months or less, Gross Unrealized Losses	(7,690)	(377)
Fixed maturity securities, Longer than 12 months, Estimated Fair Value	842	231
Fixed maturity securities, Longer than 12 months, Gross Unrealized Losses	(198)	(19)
Fixed maturity securities, Total, Estimated Fair Value	41,381	20,670
Fixed maturity securities, Total, Gross Unrealized Losses	(7,888)	(396)
Corporate and Miscellaneous
Schedule Of Available For Sale Securities [Line Items]
Fixed maturity securities, 12 months or less, Estimated Fair Value	95,370	11,913
Fixed maturity securities, 12 months or less, Gross Unrealized Losses	(11,257)	(312)
Fixed maturity securities, Longer than 12 months, Estimated Fair Value	1,386	727
Fixed maturity securities, Longer than 12 months, Gross Unrealized Losses	(459)	(36)
Fixed maturity securities, Total, Estimated Fair Value	96,756	12,640
Fixed maturity securities, Total, Gross Unrealized Losses	(11,716)	(348)
Foreign Government
Schedule Of Available For Sale Securities [Line Items]
Fixed maturity securities, 12 months or less, Estimated Fair Value		247
Fixed maturity securities, Total, Estimated Fair Value		247
Residential Mortgage-backed
Schedule Of Available For Sale Securities [Line Items]
Fixed maturity securities, 12 months or less, Estimated Fair Value	3,548	1,983
Fixed maturity securities, 12 months or less, Gross Unrealized Losses	(138)	(13)
Fixed maturity securities, Longer than 12 months, Estimated Fair Value	630	427
Fixed maturity securities, Longer than 12 months, Gross Unrealized Losses	(59)	(20)
Fixed maturity securities, Total, Estimated Fair Value	4,178	2,410
Fixed maturity securities, Total, Gross Unrealized Losses	(197)	(33)
Commercial Mortgage-backed
Schedule Of Available For Sale Securities [Line Items]
Fixed maturity securities, 12 months or less, Estimated Fair Value	19,075	3,870
Fixed maturity securities, 12 months or less, Gross Unrealized Losses	(1,030)	(36)
Fixed maturity securities, Longer than 12 months, Estimated Fair Value	98
Fixed maturity securities, Longer than 12 months, Gross Unrealized Losses	(2)
Fixed maturity securities, Total, Estimated Fair Value	19,173	3,870
Fixed maturity securities, Total, Gross Unrealized Losses	(1,032)	(36)
Asset-backed
Schedule Of Available For Sale Securities [Line Items]
Fixed maturity securities, 12 months or less, Estimated Fair Value	35,779	29,487
Fixed maturity securities, 12 months or less, Gross Unrealized Losses	(2,203)	(315)
Fixed maturity securities, Longer than 12 months, Estimated Fair Value	6,665	8,798
Fixed maturity securities, Longer than 12 months, Gross Unrealized Losses	(468)	(101)
Fixed maturity securities, Total, Estimated Fair Value	42,444	38,285
Fixed maturity securities, Total, Gross Unrealized Losses	$ (2,671)	$ (416)

Amount of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), in continuous unrealized loss position for more than 12 months, without allowance for credit loss. Includes beneficial interest in securitized financial asset.

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Amount of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), in continuous unrealized loss position for less than 12 months, without allowance for credit loss. Includes beneficial interest in securitized financial asset.

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