v3.26.3
FAIR VALUE MEASUREMENTS - Schedule of significant unobservable inputs of level 3 financial assets and liabilities (Details)
$ in Thousands
Sep. 30, 2026
USD ($)
$ / shares
Dec. 31, 2025
USD ($)
$ / shares
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Loans receivable, at fair value $ 10,798 $ 26,303
Total assets measured at fair value 316,286 406,931
Total liabilities measured at fair value 8,087 16,209
Level 3    
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Loans receivable, at fair value 10,798 26,303
Total assets measured at fair value 122,535 137,608
Total liabilities measured at fair value 190 6,400
Level 3 | Market approach | Equity securities    
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Equity securities 29,846 25,572
Level 3 | Market approach | Corporate bonds    
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Equity securities 10,000  
Level 3 | Market approach | Partnership interests and other investments    
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Equity securities $ 71,341 40,082
Level 3 | Market approach | Loans receivable at fair value    
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Loans receivable, at fair value   $ 1,835
Level 3 | Market approach | Market price of related security | Partnership interests and other investments    
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Equity securities, measurement input | $ / shares   421.00
Level 3 | Market approach | Market price of related security | Loans receivable at fair value    
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Loans receivable at fair value, measurement input | $ / shares   8.56
Level 3 | Market approach | Discount for lack of marketability | Equity securities    
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Equity securities, measurement input 0.127  
Level 3 | Market approach | Transaction price (% of par) | Corporate bonds    
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Equity securities, measurement input 0.700  
Level 3 | Market approach | Minimum | Multiple of EBITDA and indexes | Equity securities    
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Equity securities, measurement input 1.9  
Level 3 | Market approach | Minimum | Multiple of sales | Equity securities    
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Equity securities, measurement input 0.7 0.7
Level 3 | Market approach | Minimum | Market price of related security | Equity securities    
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Equity securities, measurement input | $ / shares 0.10 2.14
Level 3 | Market approach | Minimum | Carried interest sharing | Partnership interests and other investments    
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Equity securities, measurement input 0.150  
Level 3 | Market approach | Minimum | Discount rate | Partnership interests and other investments    
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Equity securities, measurement input   0
Level 3 | Market approach | Maximum | Multiple of EBITDA and indexes | Equity securities    
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Equity securities, measurement input 7.5  
Level 3 | Market approach | Maximum | Multiple of sales | Equity securities    
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Equity securities, measurement input 8.6 6.0
Level 3 | Market approach | Maximum | Market price of related security | Equity securities    
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Equity securities, measurement input | $ / shares 12.01 12.01
Level 3 | Market approach | Maximum | Carried interest sharing | Partnership interests and other investments    
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Equity securities, measurement input 0.463  
Level 3 | Market approach | Maximum | Discount rate | Partnership interests and other investments    
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Equity securities, measurement input   0.035
Level 3 | Market approach | Weighted Average | Multiple of EBITDA and indexes | Equity securities    
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Equity securities, measurement input 4.5  
Level 3 | Market approach | Weighted Average | Multiple of sales | Equity securities    
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Equity securities, measurement input 2.1 2.3
Level 3 | Market approach | Weighted Average | Market price of related security | Equity securities    
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Equity securities, measurement input | $ / shares 10.81 10.97
Level 3 | Market approach | Weighted Average | Market price of related security | Partnership interests and other investments    
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Equity securities, measurement input | $ / shares   421.00
Level 3 | Market approach | Weighted Average | Market price of related security | Loans receivable at fair value    
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Loans receivable at fair value, measurement input | $ / shares   8.56
Level 3 | Market approach | Weighted Average | Discount for lack of marketability | Equity securities    
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Equity securities, measurement input | $ / shares 0.127  
Level 3 | Market approach | Weighted Average | Transaction price (% of par) | Corporate bonds    
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Equity securities, measurement input 0.700  
Level 3 | Market approach | Weighted Average | Carried interest sharing | Partnership interests and other investments    
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Equity securities, measurement input 0.335  
Level 3 | Market approach | Weighted Average | Discount rate | Partnership interests and other investments    
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Equity securities, measurement input   0.005
Level 3 | Option pricing model | Equity securities    
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Equity securities $ 550 $ 2,550
Level 3 | Option pricing model | Minimum | Annualized volatility | Equity securities    
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Equity securities, measurement input 0.45 0.460
Level 3 | Option pricing model | Maximum | Annualized volatility | Equity securities    
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Equity securities, measurement input 2.99 1.150
Level 3 | Option pricing model | Weighted Average | Annualized volatility | Equity securities    
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Equity securities, measurement input 0.450 0.570
Level 3 | Discounted cash flow | Loans receivable at fair value    
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Loans receivable, at fair value $ 10,798 $ 24,468
Level 3 | Discounted cash flow | Recovery rate | Loans receivable at fair value    
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Equity securities, measurement input 0.359  
Level 3 | Discounted cash flow | Minimum | Discount rate | Loans receivable at fair value    
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Equity securities, measurement input 0.068 0.068
Level 3 | Discounted cash flow | Maximum | Discount rate | Loans receivable at fair value    
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Equity securities, measurement input 0.937 0.565
Level 3 | Discounted cash flow | Weighted Average | Discount rate | Loans receivable at fair value    
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Equity securities, measurement input 0.285 0.210
Level 3 | Discounted cash flow | Weighted Average | Recovery rate | Loans receivable at fair value    
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Equity securities, measurement input 0.359  
Level 3 | Hull-White lattice, with/without differential, probability-weighted    
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Embedded derivatives, included in accrued expenses and other liabilities $ 190  
Level 3 | Hull-White lattice, with/without differential, probability-weighted | Probability of scenario    
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Derivative liability, measurement input 0.200  
Level 3 | Hull-White lattice, with/without differential, probability-weighted | Weighted Average | Probability of scenario    
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Derivative liability, measurement input 0.200  
Level 3 | Monte Carlo simulation | Equity securities    
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Equity securities   $ 43,101
Level 3 | Monte Carlo simulation | Minimum | Annualized volatility | Equity securities    
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Equity securities, measurement input   1.200
Level 3 | Monte Carlo simulation | Maximum | Annualized volatility | Equity securities    
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Equity securities, measurement input   1.480
Level 3 | Monte Carlo simulation | Weighted Average | Annualized volatility | Equity securities    
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Equity securities, measurement input   1.210
Level 3 | Monte Carlo simulation and Black-Scholes option pricing model    
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Embedded derivatives, included in accrued expenses and other liabilities   $ 6,400
Level 3 | Monte Carlo simulation and Black-Scholes option pricing model | Discount for lack of marketability    
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Derivative liability, measurement input   0.147
Level 3 | Monte Carlo simulation and Black-Scholes option pricing model | Annualized volatility    
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Derivative liability, measurement input   0.850
Level 3 | Monte Carlo simulation and Black-Scholes option pricing model | Weighted Average | Discount for lack of marketability    
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Derivative liability, measurement input   0.147
Level 3 | Monte Carlo simulation and Black-Scholes option pricing model | Weighted Average | Annualized volatility    
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Derivative liability, measurement input   0.850