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Fair Value Measurements (Details) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2023 | Dec. 31, 2022
Asset-backed Securities |  |
Fair Value Assets and Liabilities Measured on Recurring Basis Unobservable Input Reconciliation [Line Items] |  |
Fair value transfer assets into level 3 |  | $ 15,012
Fair value transfer assets out of level 3 | $ 14,885 | (15,000)
Collateralized loan obligations. |  |
Fair Value Assets and Liabilities Measured on Recurring Basis Unobservable Input Reconciliation [Line Items] |  |
Fair value transfer assets into level 3 |  | 6,770
Fair value transfer assets out of level 3 | $ 6,764 | $ (6,800)

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- Definition Amount of transfer of financial instrument classified as an asset into level 3 of the fair value hierarchy. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (c)(3) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482106/820-10-50-2 + Details
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