Investments - Schedule of Available-for-Sale Investments (Details) - USD ($) $ in Thousands	Dec. 31, 2025	Dec. 31, 2024
Fixed maturity securities:
Cost or Amortized Cost	$ 1,448,750
Fair Value	1,404,774	$ 1,189,733
Fixed maturity securities
Fixed maturity securities:
Cost or Amortized Cost	1,448,750	1,278,337
Gross Unrealized Gains	10,079	2,102
Gross Unrealized Losses	(54,055)	(90,706)
Fair Value	1,404,774	1,189,733
State and municipal
Fixed maturity securities:
Cost or Amortized Cost	237,366	223,009
Gross Unrealized Gains	1,164	598
Gross Unrealized Losses	(19,053)	(27,043)
Fair Value	219,477	196,564
Residential mortgage-backed
Fixed maturity securities:
Cost or Amortized Cost	483,074	352,064
Gross Unrealized Gains	3,239	32
Gross Unrealized Losses	(13,595)	(25,869)
Fair Value	472,718	326,227
Corporate
Fixed maturity securities:
Cost or Amortized Cost	589,477	503,610
Gross Unrealized Gains	5,461	1,358
Gross Unrealized Losses	(17,184)	(29,483)
Fair Value	577,754	475,485
Commercial mortgage and asset-backed
Fixed maturity securities:
Cost or Amortized Cost	124,507	178,238
Gross Unrealized Gains	187	112
Gross Unrealized Losses	(4,159)	(7,892)
Fair Value	120,535	170,458
U.S. Treasury securities and obligations guaranteed by the U.S. government
Fixed maturity securities:
Cost or Amortized Cost	14,326	21,416
Gross Unrealized Gains	28	2
Gross Unrealized Losses	(64)	(419)
Fair Value	$ 14,290	$ 20,999