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Fair Value Measurements - Fair Value of Certain Investments Based on NAV (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2024 | Dec. 31, 2023
Fair Value Investments Entities That Calculate Net Asset Value Per Share [Line Items] |  |
Fair Value | $ 91,676 | $ 92,599
Unfunded Commitments | 6,068 | 5,505
Hedge funds |  |
Fair Value Investments Entities That Calculate Net Asset Value Per Share [Line Items] |  |
Fair Value | $ 47,788 | $ 45,324
Hedge funds | Monthly |  |
Fair Value Investments Entities That Calculate Net Asset Value Per Share [Line Items] |  |
Investments redeemable (as percent) | 100.00% | 74.00%
Hedge funds | Quarterly |  |
Fair Value Investments Entities That Calculate Net Asset Value Per Share [Line Items] |  |
Investments redeemable (as percent) |  | 26.00%
Hedge funds | Minimum |  |
Fair Value Investments Entities That Calculate Net Asset Value Per Share [Line Items] |  |
Investments Redeemable, Redemption Notice Period | 30 days | 30 days
Hedge funds | Maximum |  |
Fair Value Investments Entities That Calculate Net Asset Value Per Share [Line Items] |  |
Investments Redeemable, Redemption Notice Period | 60 days | 60 days
Other |  |
Fair Value Investments Entities That Calculate Net Asset Value Per Share [Line Items] |  |
Fair Value | $ 679 | $ 680
Other | Monthly |  |
Fair Value Investments Entities That Calculate Net Asset Value Per Share [Line Items] |  |
Investments redeemable (as percent) | 95.00% | 96.00%
Other | Daily |  |
Fair Value Investments Entities That Calculate Net Asset Value Per Share [Line Items] |  |
Investments redeemable (as percent) | 5.00% | 4.00%
Other | Minimum |  |
Fair Value Investments Entities That Calculate Net Asset Value Per Share [Line Items] |  |
Investments Redeemable, Redemption Notice Period | 30 days | 30 days
Other | Maximum |  |
Fair Value Investments Entities That Calculate Net Asset Value Per Share [Line Items] |  |
Investments Redeemable, Redemption Notice Period | 90 days | 30 days
Debt |  |
Fair Value Investments Entities That Calculate Net Asset Value Per Share [Line Items] |  |
Fair Value | $ 3 | $ 5
Investments Redeemable, Redemption Notice Period | 30 days | 30 days
Debt | Daily |  |
Fair Value Investments Entities That Calculate Net Asset Value Per Share [Line Items] |  |
Investments redeemable (as percent) | 100.00% | 100.00%
Equity |  |
Fair Value Investments Entities That Calculate Net Asset Value Per Share [Line Items] |  |
Fair Value | $ 50 | $ 45
Equity | Monthly |  |
Fair Value Investments Entities That Calculate Net Asset Value Per Share [Line Items] |  |
Investments redeemable (as percent) | 100.00% | 34.00%
Equity | Annually |  |
Fair Value Investments Entities That Calculate Net Asset Value Per Share [Line Items] |  |
Investments redeemable (as percent) |  | 66.00%
Equity | Minimum |  |
Fair Value Investments Entities That Calculate Net Asset Value Per Share [Line Items] |  |
Investments Redeemable, Redemption Notice Period | 30 days | 30 days
Equity | Maximum |  |
Fair Value Investments Entities That Calculate Net Asset Value Per Share [Line Items] |  |
Investments Redeemable, Redemption Notice Period | 30 days | 60 days
Private equity | Equity growth |  |
Fair Value Investments Entities That Calculate Net Asset Value Per Share [Line Items] |  |
Fair Value | $ 43,156 | $ 46,545
Unfunded Commitments | $ 6,068 | $ 5,505
% of NAV Not Redeemable | 100.00% | 100.00%
Private equity | Consolidated but not owned |  |
Fair Value Investments Entities That Calculate Net Asset Value Per Share [Line Items] |  |
Unfunded Commitments | $ 20,205 | $ 9,605

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- Definition States the percentage with which the entity can redeem its investment, or portion thereof, per period (for example, annually, semi-annually, quarterly) for each of those certain investments for which net asset value per share is calculated (including by unit, membership interest, or other equity (ownership interest) unit measure) (alternative investments), by major category. + References No definition available. + Details
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- Definition Fair value of investment other than investment in equity security, investment in debt security and equity method investment. Includes, but is not limited to, investment in certain entities that calculate net asset value per share. Example includes, but is not limited to, investment in hedge fund, venture capital fund, private equity fund, and real estate partnership or fund. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482106/820-10-50-2 Reference 2: http://www.xbrl.org/2003/role/exampleRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 55 -Paragraph 107 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482078/820-10-55-107 Reference 3: http://www.xbrl.org/2003/role/exampleRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 55 -Paragraph 103 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482078/820-10-55-103 Reference 4: http://www.xbrl.org/2003/role/exampleRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 55 -Paragraph 100 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482078/820-10-55-100 Reference 5: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (bbb)(2)(i) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482106/820-10-50-2 Reference 6: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (bbb)(2) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482106/820-10-50-2 Reference 7: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (bbb)(1) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482106/820-10-50-2 Reference 8: http://www.xbrl.org/2003/role/disclosureRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 35 -Paragraph 54B -Publisher FASB -URI https://asc.fasb.org/1943274/2147482134/820-10-35-54B Reference 9: http://www.xbrl.org/2003/role/disclosureRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 6A -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482106/820-10-50-6A + Details
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