Investments - Available-for-sale Securities (Details) - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
Debt Securities, Available-for-sale [Line Items]
Debt securities, Cost or Amortized Cost	$ 152,217	$ 150,732
Debt securities, Gross Unrealized Gain	84	898
Debt securities, Gross Unrealized Losses	(8,266)	(1,847)
Debt securities, Estimated Fair Value	144,035	149,783
U.S. Government
Debt Securities, Available-for-sale [Line Items]
Debt securities, Cost or Amortized Cost	18,541	20,723
Debt securities, Gross Unrealized Gain	8	74
Debt securities, Gross Unrealized Losses	(291)	(77)
Debt securities, Estimated Fair Value	18,258	20,720
State and local government
Debt Securities, Available-for-sale [Line Items]
Debt securities, Cost or Amortized Cost	29,866	30,063
Debt securities, Gross Unrealized Gain	49	555
Debt securities, Gross Unrealized Losses	(1,846)	(189)
Debt securities, Estimated Fair Value	28,069	30,429
Corporate debt
Debt Securities, Available-for-sale [Line Items]
Debt securities, Cost or Amortized Cost	35,345	30,808
Debt securities, Gross Unrealized Gain	11	88
Debt securities, Gross Unrealized Losses	(2,586)	(550)
Debt securities, Estimated Fair Value	32,770	30,346
Asset-backed securities
Debt Securities, Available-for-sale [Line Items]
Debt securities, Cost or Amortized Cost	27,952	28,652
Debt securities, Gross Unrealized Gain	2	10
Debt securities, Gross Unrealized Losses	(723)	(224)
Debt securities, Estimated Fair Value	27,231	28,438
Mortgage-backed securities
Debt Securities, Available-for-sale [Line Items]
Debt securities, Cost or Amortized Cost	31,870	33,178
Debt securities, Gross Unrealized Gain	9	105
Debt securities, Gross Unrealized Losses	(2,571)	(762)
Debt securities, Estimated Fair Value	29,308	32,521
Commercial mortgage-backed securities
Debt Securities, Available-for-sale [Line Items]
Debt securities, Cost or Amortized Cost	3,424	1,659
Debt securities, Gross Unrealized Gain	1	31
Debt securities, Gross Unrealized Losses	(55)	0
Debt securities, Estimated Fair Value	3,370	1,690
Collateralized mortgage obligations
Debt Securities, Available-for-sale [Line Items]
Debt securities, Cost or Amortized Cost	5,219	5,649
Debt securities, Gross Unrealized Gain	4	35
Debt securities, Gross Unrealized Losses	(194)	(45)
Debt securities, Estimated Fair Value	$ 5,029	$ 5,639

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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