Investments - Available-for-sale Securities (Details) - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022
Debt Securities, Available-for-sale [Line Items]
Debt securities, Cost or Amortized Cost	$ 119,499	$ 127,119
Debt securities, Gross Unrealized Gain	0	1
Debt securities, Gross Unrealized Losses	(17,754)	(16,919)
Debt securities, Estimated Fair Value	101,745	110,201
U.S. Government
Debt Securities, Available-for-sale [Line Items]
Debt securities, Cost or Amortized Cost	6,410	7,833
Debt securities, Gross Unrealized Gain	0	0
Debt securities, Gross Unrealized Losses	(272)	(335)
Debt securities, Estimated Fair Value	6,138	7,498
State and local government
Debt Securities, Available-for-sale [Line Items]
Debt securities, Cost or Amortized Cost	25,016	25,487
Debt securities, Gross Unrealized Gain	0	1
Debt securities, Gross Unrealized Losses	(4,951)	(4,672)
Debt securities, Estimated Fair Value	20,065	20,816
Corporate debt
Debt Securities, Available-for-sale [Line Items]
Debt securities, Cost or Amortized Cost	34,024	35,347
Debt securities, Gross Unrealized Gain	0	0
Debt securities, Gross Unrealized Losses	(4,898)	(4,788)
Debt securities, Estimated Fair Value	29,126	30,559
Asset-backed securities
Debt Securities, Available-for-sale [Line Items]
Debt securities, Cost or Amortized Cost	19,956	21,742
Debt securities, Gross Unrealized Gain	0	0
Debt securities, Gross Unrealized Losses	(837)	(1,246)
Debt securities, Estimated Fair Value	19,119	20,496
Mortgage-backed securities
Debt Securities, Available-for-sale [Line Items]
Debt securities, Cost or Amortized Cost	27,306	29,194
Debt securities, Gross Unrealized Gain	0	0
Debt securities, Gross Unrealized Losses	(6,115)	(5,157)
Debt securities, Estimated Fair Value	21,191	24,037
Commercial mortgage-backed securities
Debt Securities, Available-for-sale [Line Items]
Debt securities, Cost or Amortized Cost	3,386	3,414
Debt securities, Gross Unrealized Gain	0	0
Debt securities, Gross Unrealized Losses	(138)	(186)
Debt securities, Estimated Fair Value	3,248	3,228
Collateralized mortgage obligations
Debt Securities, Available-for-sale [Line Items]
Debt securities, Cost or Amortized Cost	3,401	4,102
Debt securities, Gross Unrealized Gain	0	0
Debt securities, Gross Unrealized Losses	(543)	(535)
Debt securities, Estimated Fair Value	$ 2,858	$ 3,567

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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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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