Investments - Amortized Cost, Fair Value and Unrealized Gains and (Losses) (Details) - USD ($) $ in Thousands	Mar. 31, 2023	Dec. 31, 2022
Net Investment Income [Line Items]
Amortized Cost	$ 98,415	$ 97,812
Gross Unrealized, Gains	146	56
Gross Unrealized, Losses	(5,442)	(6,227)
Fair value	93,119	91,641
U.S. Treasuries
Net Investment Income [Line Items]
Amortized Cost	34,637	35,637
Gross Unrealized, Gains	12	5
Gross Unrealized, Losses	(226)	(320)
Fair value	34,423	35,322
Obligations of states, municipalities and political subdivisions
Net Investment Income [Line Items]
Amortized Cost	11,304	11,549
Gross Unrealized, Gains	13	2
Gross Unrealized, Losses	(1,054)	(1,326)
Fair value	10,263	10,225
Corporate bonds.
Net Investment Income [Line Items]
Amortized Cost	34,549	31,032
Gross Unrealized, Gains	96	32
Gross Unrealized, Losses	(2,610)	(2,837)
Fair value	32,035	28,227
Residential and commercial mortgage-backed securities
Net Investment Income [Line Items]
Amortized Cost	11,527	12,790
Gross Unrealized, Gains	11	11
Gross Unrealized, Losses	(1,162)	(1,268)
Fair value	10,376	11,533
Other loan-backed and structured securities
Net Investment Income [Line Items]
Amortized Cost	6,398	6,804
Gross Unrealized, Gains	14	6
Gross Unrealized, Losses	(390)	(476)
Fair value	$ 6,022	$ 6,334

Amount, before tax, of unrealized gain in accumulated other comprehensive income (AOCI) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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Amount, before tax, of unrealized loss in accumulated other comprehensive income (AOCI) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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Amortized cost of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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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).

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