FAIR VALUE MEASUREMENTS - Schedule of Loan Securitizations (Details) $ in Thousands	Jun. 30, 2024 USD ($)
Residential Mortgage Loans
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Investments Fair Value	$ 3,347,335
Notes Payable Fair Value	2,887,692
Mortgage Loans Receivable
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Investments Fair Value	492,103
Notes Payable Fair Value	$ 451,682
Mortgage Loans Receivable | Discount Rate | Weighted Average
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Measurement inputs	2.30%
Mortgage Loans Receivable | Discount Rate | Maximum
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Measurement inputs	4.90%
Mortgage Loans Receivable | Discount Rate | Minimum
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Measurement inputs	2.10%
Mortgage Loans Receivable | Prepayment Rate
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Measurement inputs	15.00%
Mortgage Loans Receivable | CDR
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Measurement inputs	0.00%
Mortgage Loans Receivable | Loss Severity
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Measurement inputs	0.00%