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LOANS HELD-FOR-INVESTMENT - Schedule of CRE Loans on Carrying Values (Details) - USD ($) $ in Thousands	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans held-for-investment and related receivables, net	$ 3,752,467	$ 3,763,013
Less: Current expected credit losses	(297,878)	(392,136)
Net book value	3,454,589	3,370,877	$ 4,264,465
CRE Loans
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans held-for-investment and related receivables, net	3,361,679	3,466,929
Net book value	3,074,451	3,085,104	$ 3,539,111
First mortgage loans
Financing Receivable, Allowance for Credit Loss [Line Items]
Less: Current expected credit losses	(239,800)	$ (330,200)
First mortgage loans \| CRE Loans
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans held-for-investment and related receivables, net	3,361,679
Net book value	$ 3,074,451
Credit loss interest rate	100.00%
First mortgage loans \| CRE Loans \| South
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans held-for-investment and related receivables, net	$ 1,455,667
Credit loss interest rate	43.30%
First mortgage loans \| CRE Loans \| West
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans held-for-investment and related receivables, net	$ 942,804
Credit loss interest rate	28.00%
First mortgage loans \| CRE Loans \| East
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans held-for-investment and related receivables, net	$ 555,594
Credit loss interest rate	16.50%
First mortgage loans \| CRE Loans \| Various
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans held-for-investment and related receivables, net	$ 407,614
Credit loss interest rate	12.20%
First mortgage loans \| CRE Loans \| Office
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans held-for-investment and related receivables, net	$ 1,817,049
Credit loss interest rate	54.10%
First mortgage loans \| CRE Loans \| Multifamily
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans held-for-investment and related receivables, net	$ 659,487
Credit loss interest rate	19.60%
First mortgage loans \| CRE Loans \| Industrial
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans held-for-investment and related receivables, net	$ 426,801
Credit loss interest rate	12.70%
First mortgage loans \| CRE Loans \| Hospitality
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans held-for-investment and related receivables, net	$ 311,702
Credit loss interest rate	9.30%
First mortgage loans \| CRE Loans \| Mixed Use
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans held-for-investment and related receivables, net	$ 85,717
Credit loss interest rate	2.50%
First mortgage loans \| CRE Loans \| Self-Storage
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans held-for-investment and related receivables, net	$ 60,923
Credit loss interest rate	1.80%
CRE loans \| CRE Loans
Financing Receivable, Allowance for Credit Loss [Line Items]
Less: Current expected credit losses	$ (287,228)