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Investments - Amortized Cost, Fair Value and Unrealized Gains and (Losses) (Details) - USD ($) $ in Thousands | Jun. 30, 2026 | Dec. 31, 2025
--- | --- | ---
Net Investment Income [Line Items] |  |
Amortized Cost | $ 65,566 | $ 67,304
Gross unrealized, gains | 110 | 796
Gross unrealized, losses | (554) | (72)
Fair Value | 65,122 | 68,028
Variable Interest Entity, Primary Beneficiary |  |
Net Investment Income [Line Items] |  |
Amortized Cost | 199,556 | 180,411
Gross unrealized, gains | 665 | 2,443
Gross unrealized, losses | (3,133) | (2,212)
Fair Value | 197,088 | 180,642
U.S. Treasuries |  |
Net Investment Income [Line Items] |  |
Amortized Cost | 3,954 | 13,330
Gross unrealized, gains | 0 | 43
Gross unrealized, losses | (5) | (3)
Fair Value | 3,949 | 13,370
U.S. Treasuries | Variable Interest Entity, Primary Beneficiary |  |
Net Investment Income [Line Items] |  |
Amortized Cost | 7,326 | 9,695
Gross unrealized, gains | 6 | 40
Gross unrealized, losses | (175) | (102)
Fair Value | 7,157 | 9,633
Obligations of states, municipalities and political subdivisions |  |
Net Investment Income [Line Items] |  |
Amortized Cost | 2,260 | 2,039
Gross unrealized, gains | 6 | 31
Gross unrealized, losses | (3) | 0
Fair Value | 2,263 | 2,070
Obligations of states, municipalities and political subdivisions | Variable Interest Entity, Primary Beneficiary |  |
Net Investment Income [Line Items] |  |
Amortized Cost | 29,154 | 12,688
Gross unrealized, gains | 39 | 112
Gross unrealized, losses | (398) | (406)
Fair Value | 28,795 | 12,394
Corporate bonds |  |
Net Investment Income [Line Items] |  |
Amortized Cost | 37,915 | 31,123
Gross unrealized, gains | 47 | 202
Gross unrealized, losses | (418) | (46)
Fair Value | 37,544 | 31,279
Corporate bonds | Variable Interest Entity, Primary Beneficiary |  |
Net Investment Income [Line Items] |  |
Amortized Cost | 66,950 | 62,808
Gross unrealized, gains | 305 | 1,078
Gross unrealized, losses | (1,011) | (777)
Fair Value | 66,244 | 63,109
Residential and commercial mortgage-backed securities |  |
Net Investment Income [Line Items] |  |
Amortized Cost | 21,437 | 20,812
Gross unrealized, gains | 57 | 520
Gross unrealized, losses | (128) | (23)
Fair Value | 21,366 | 21,309
Residential and commercial mortgage-backed securities | Variable Interest Entity, Primary Beneficiary |  |
Net Investment Income [Line Items] |  |
Amortized Cost | 77,126 | 77,824
Gross unrealized, gains | 258 | 1,017
Gross unrealized, losses | (1,399) | (873)
Fair Value | 75,985 | 77,968
Other loan-backed and structured securities |  |
Net Investment Income [Line Items] |  |
Amortized Cost | 0 | 0
Gross unrealized, gains | 0 | 0
Gross unrealized, losses | 0 | 0
Fair Value | 0 | 0
Other loan-backed and structured securities | Variable Interest Entity, Primary Beneficiary |  |
Net Investment Income [Line Items] |  |
Amortized Cost | 19,000 | 17,396
Gross unrealized, gains | 57 | 196
Gross unrealized, losses | (150) | (54)
Fair Value | $ 18,907 | $ 17,538

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