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Investments, Debt and Equity Securities in-text (Details) - USD ($) | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2025 | Jun. 30, 2024 | Jun. 30, 2025 | Jun. 30, 2024
Investments, Debt and Equity Securities [Abstract] |  |  |  |
Debt Securities, Available-for-sale, Allowance for Credit Loss, Writeoff | $ 0 | $ 0 | $ 0 | $ 0
Debt and Equity Securities, FV-NI [Line Items] |  |  |  |
Investment related gains (losses), net | 2,408,000 | (253,000) | (486,000) | 710,000
Debt Securities, Available-for-sale, Allowance for Credit Loss, Writeoff | 0 | 0 | 0 | 0
Equity Securities [Member] |  |  |  |
Debt and Equity Securities, FV-NI [Line Items] |  |  |  |
Investment related gains (losses), net | $ (16,000) | $ (100,000) | $ 31,000 | $ 100,000

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- Definition Amount of writeoff of allowance for credit loss on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale). + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 30 -Name Accounting Standards Codification -Section 50 -Paragraph 9 -Subparagraph (g) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479106/326-30-50-9 + Details
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- Definition Amount of realized gain (loss) on investment. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 944 -SubTopic 220 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-04(3)(a)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147477250/944-220-S99-1 + Details
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- 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. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 6B -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482106/820-10-50-6B + Details
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