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COMMERCIAL MORTGAGE LOANS HELD-FOR-INVESTMENT - Additional Information (Details) | 3 Months Ended | 12 Months Ended
--- | --- | ---
Mar. 31, 2026 USD ($) loan | Dec. 31, 2025 USD ($) loan
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |
Average risk rating, moderate |  | 3.1 | 3.2
Financing receivable, allowance for credit loss, period increase (decrease) |  | $ 3,100,000 |
Loans held for investment | [1] | $ 19,543,903 | $ 22,658,121
Minimum |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |
Capitalization rate assumption percentage |  | 5.50% |
Maximum |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |
Capitalization rate assumption percentage |  | 8.50% |
Risk rating, 5 |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |
Unpaid principal balance of default risk loans |  | $ 107,900,000 |
Amortized cost of default risk loans |  | 90,700,000 |
Fair value of default risk loans |  | 91,000,000.0 |
Risk rating, 5 | Dallas, TX |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |
Outstanding principal balance |  | 31,900,000 |
Principal payment amount |  | $ 2,000,000.0 |
Term extention period |  | 2 years |
Risk rating, 5 | Dallas, TX | Minimum |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |
Credit spread percentage |  | 3.40% |
Risk rating, 5 | Dallas, TX | Maximum |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |
Credit spread percentage |  | 3.90% |
Commercial Real Estate Portfolio Segment | Multifamily |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |
Commercial loans, specific allowance |  | $ 15,800,000 | 17,600,000
Recognized interest on loan |  | $ 500,000 | $ 800,000
Commercial Real Estate Portfolio Segment | Risk rating, 3 |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |
Average risk rating, percentage |  | 76.70% | 81.60%
Commercial loans that paid off |  | $ 46,800,000 |
Transition of commercial loans held for sale to a lower risk rating |  | 9,800,000 |
Commercial Real Estate Portfolio Segment | Risk rating, 2 |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |
Transition of commercial loans held for sale to a lower risk rating |  | 94,500,000 |
Commercial Real Estate Portfolio Segment | Risk rating, 4 |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |
Transition of commercial loans held for sale to a higher risk rating |  | 69,600,000 |
Commercial Real Estate Portfolio Segment | Risk rating, 5 |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |
Commercial loans held for sale foreclosed and moved to REO |  | 10,500,000 |
Commercial Real Estate Portfolio Segment | Risk rating, 5 | Multifamily |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |
Recognized interest on loan |  | 300,000 |
Commercial Real Estate Portfolio Segment | Risk rating, 5 | Multifamily | Philadelphia, PA |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |
Commercial loans, specific allowance |  | $ 1,300,000 | $ 1,300,000
Number of loans collateralized | loan |  | 1 | 1
Number of impaired office loans | loan |  | 2 | 2
Commercial loans, held-for-investment, unpaid principal value |  | $ 15,500,000 | $ 15,500,000
Commercial Real Estate Portfolio Segment | Risk rating, 5 | Multifamily | Arlington, TX |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |
Commercial loans, specific allowance |  | $ 3,600,000 | $ 3,600,000
Number of loans collateralized | loan |  | 2 | 2
Number of impaired office loans | loan |  | 2 | 2
Commercial Real Estate Portfolio Segment | Risk rating, 5 | Multifamily | Cedar Park, TX |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |
Commercial loans, specific allowance |  | $ 0 | $ 0
Commercial loans, held-for-investment, unpaid principal value |  | 35,500,000 | 35,500,000
Commercial Real Estate Portfolio Segment | Risk Level, Monetary Default Default Risk | Multifamily | Des Moines, IA |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |
Commercial loans, specific allowance |  | $ 500,000 | $ 500,000
Number of loans collateralized | loan |  | 4 | 4
Number of impaired office loans | loan |  | 4 | 4
Commercial Real Estate Portfolio Segment | Risk Level, Monetary Default Default Risk | Multifamily | Tampa, FL |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |
Commercial loans, specific allowance |  | $ 1,400,000 | $ 900,000
Commercial Real Estate Portfolio Segment | Risk Level, Monetary Default Default Risk | Multifamily | Tallahassee, FL |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |
Commercial loans, specific allowance |  | 3,000,000.0 | 3,000,000.0
Commercial Real Estate Portfolio Segment | Risk Level, Monetary Default Default Risk | Multifamily | Ypsilanti, MI |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |
Commercial loans, specific allowance |  | 5,900,000 | 5,900,000
Commercial loans, held-for-investment, unpaid principal value |  | 56,900,000 | 55,800,000
Commercial Real Estate Portfolio Segment | Risk Level, Monetary Default Default Risk | Multifamily | Colorado Springs, CO |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |
Commercial loans, specific allowance |  | 2,400,000 | $ 2,400,000
Number of loans collateralized | loan |  |  | 1
Commercial loans, held-for-investment, unpaid principal value |  | $ 10,500,000 | $ 10,500,000
[1] | Our consolidated balance sheets include assets and liabilities of consolidated variable interest entities ("VIEs") as the Company was the primary beneficiary of these VIEs. As of March 31, 2026 and December 31, 2025, assets of consolidated VIEs totaled $666,553,315 and $889,507,091, respectively and the liabilities of consolidated VIEs totaled $581,030,250 and $750,274,556 respectively. See Note 4 for further discussion.

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