Investments in Fixed Maturity and Equity Securities - Investment in Equity Securities (Details) - USD ($) $ in Thousands	6 Months Ended
Jun. 30, 2026	Dec. 31, 2025
Debt and Equity Securities, FV-NI [Line Items]
Cost Basis	$ 1,113,489
Net Unrealized Gains (Losses)	(35,954)
Fair Value	1,077,535	$ 0
Communications
Debt and Equity Securities, FV-NI [Line Items]
Cost Basis	528,589
Net Unrealized Gains (Losses)	(14,383)
Fair Value	514,206
Consumer products
Debt and Equity Securities, FV-NI [Line Items]
Cost Basis	249,980
Net Unrealized Gains (Losses)	(7,367)
Fair Value	242,613
Financial
Debt and Equity Securities, FV-NI [Line Items]
Cost Basis	209,922
Net Unrealized Gains (Losses)	(2,232)
Fair Value	207,690
Technology
Debt and Equity Securities, FV-NI [Line Items]
Cost Basis	124,998
Net Unrealized Gains (Losses)	(11,972)
Fair Value	$ 113,026

Amount of investment in equity security measured at fair value with change in fair value recognized in net income (FV-NI).

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+ Details

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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