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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