Investments - Securities with Gross Unrealized Loss Position (Details) - USD ($) $ in Thousands	Dec. 31, 2024	Dec. 31, 2023
Net Investment Income [Line Items]
Less Than Twelve Months, Gross Unrealized Loss	$ (5,011)	$ (3,693)
Less Than Twelve Months, Fair Value	119,225	53,357
Twelve Months or Greater, Gross Unrealized Loss	(746)	(958)
Twelve Months or Greater, Fair Value	7,540	9,955
Total, Gross Unrealized Loss	(5,757)	(4,651)
Total, Fair Value	126,765	63,312
U.S. Treasuries
Net Investment Income [Line Items]
Less Than Twelve Months, Gross Unrealized Loss	(376)	(280)
Less Than Twelve Months, Fair Value	7,881	12,345
Twelve Months or Greater, Gross Unrealized Loss	(45)	(50)
Twelve Months or Greater, Fair Value	525	515
Total, Gross Unrealized Loss	(421)	(330)
Total, Fair Value	8,406	12,860
Obligations of states, municipalities and political subdivisions
Net Investment Income [Line Items]
Less Than Twelve Months, Gross Unrealized Loss	(652)	(813)
Less Than Twelve Months, Fair Value	7,738	8,445
Twelve Months or Greater, Gross Unrealized Loss	(104)	(148)
Twelve Months or Greater, Fair Value	1,175	1,639
Total, Gross Unrealized Loss	(756)	(961)
Total, Fair Value	8,913	10,084
Corporate bonds
Net Investment Income [Line Items]
Less Than Twelve Months, Gross Unrealized Loss	(2,063)	(1,698)
Less Than Twelve Months, Fair Value	47,045	21,104
Twelve Months or Greater, Gross Unrealized Loss	(229)	(369)
Twelve Months or Greater, Fair Value	3,100	4,677
Total, Gross Unrealized Loss	(2,292)	(2,067)
Total, Fair Value	50,145	25,781
Residential and commercial mortgage-backed securities
Net Investment Income [Line Items]
Less Than Twelve Months, Gross Unrealized Loss	(1,671)	(621)
Less Than Twelve Months, Fair Value	49,585	8,673
Twelve Months or Greater, Gross Unrealized Loss	(361)	(383)
Twelve Months or Greater, Fair Value	2,691	3,072
Total, Gross Unrealized Loss	(2,032)	(1,004)
Total, Fair Value	52,276	11,745
Other loan-backed and structured securities
Net Investment Income [Line Items]
Less Than Twelve Months, Gross Unrealized Loss	(249)	(281)
Less Than Twelve Months, Fair Value	6,976	2,790
Twelve Months or Greater, Gross Unrealized Loss	(7)	(8)
Twelve Months or Greater, Fair Value	49	52
Total, Gross Unrealized Loss	(256)	(289)
Total, Fair Value	$ 7,025	$ 2,842