COMMERCIAL MORTGAGE LOANS HELD-FOR-INVESTMENT - Additional Information (Details)		3 Months Ended		12 Months Ended
		Mar. 31, 2025 USD ($) loan	Mar. 31, 2024 USD ($)	Dec. 31, 2024 USD ($) contract
Financing Receivable, Credit Quality Indicator [Line Items]
Average risk rating, moderate		3.5		3.5
Financing receivable, allowance for credit loss, period increase (decrease)		$ 5,700,000
Loans held for investment	[1]	17,060,194		$ 11,320,220
Principal repayments		$ 54,977,677	$ 80,093,383
Maximum
Financing Receivable, Credit Quality Indicator [Line Items]
Capitalization rate assumption percentage		6.50%
Minimum
Financing Receivable, Credit Quality Indicator [Line Items]
Capitalization rate assumption percentage		5.30%
Risk rating, 5
Financing Receivable, Credit Quality Indicator [Line Items]
Unpaid principal balance of default risk loans		$ 108,400,000
Amortized cost of default risk loans		95,900,000
Fair value of default risk loans		97,600,000
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 | Maximum
Financing Receivable, Credit Quality Indicator [Line Items]
Credit spread percentage		3.90%
Risk rating, 5 | Dallas, TX | Minimum
Financing Receivable, Credit Quality Indicator [Line Items]
Credit spread percentage		3.40%
Commercial Real Estate Portfolio Segment
Financing Receivable, Credit Quality Indicator [Line Items]
Principal repayments		$ 54,977,677
Commercial Real Estate Portfolio Segment | Risk rating, 3
Financing Receivable, Credit Quality Indicator [Line Items]
Average risk rating, percentage		59.90%		63.70%
Commercial loans that paid off		$ 51,700,000
Transition of commercial loans held for sale to a lower risk rating		100,300,000
Transition of commercial loans held for sale to a risk rating two steps lower		29,600,000
Commercial Real Estate Portfolio Segment | Risk rating, 4
Financing Receivable, Credit Quality Indicator [Line Items]
Commercial loans that paid off		1,000,000.0
Transition of commercial loans held for sale to a lower risk rating		6,100,000
Transition of commercial loans held for sale to a higher risk rating		155,200,000
Commercial Real Estate Portfolio Segment | Risk rating, 5
Financing Receivable, Credit Quality Indicator [Line Items]
Commercial loans that paid off		2,000,000
Transition of commercial loans held for sale to a higher risk rating		47,900,000
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		18,900,000
Commercial Real Estate Portfolio Segment | Risk Level, Monetary Default Default Risk | Multifamily | Philadelphia, PA
Financing Receivable, Credit Quality Indicator [Line Items]
Transition of commercial loans held for sale to a risk rating two steps higher		15,000,000
Principal repayments		300,000
Commercial Real Estate Portfolio Segment | Risk Level, Monetary Default Default Risk | Multifamily | Orlando, FL
Financing Receivable, Credit Quality Indicator [Line Items]
Transition of commercial loans held for sale to a risk rating two steps higher		19,600,000
Commercial Real Estate Portfolio Segment | Risk Level, Monetary Default Default Risk | Multifamily | San Antonio, TX
Financing Receivable, Credit Quality Indicator [Line Items]
Transition of commercial loans held for sale to a risk rating two steps higher		15,400,000
Transition of commercial loans held for sale to a risk rating allowance after analysis two steps higher		2,400,000
Recognized interest on loan		100,000
Commercial Real Estate Portfolio Segment | Risk Level, Monetary Default Default Risk | Multifamily | Colorado Springs, CO
Financing Receivable, Credit Quality Indicator [Line Items]
Transition of commercial loans held for sale to a risk rating two steps higher		10,500,000
Transition of commercial loans held for sale to a risk rating allowance after analysis two steps higher		1,500,000
Recognized interest on loan		100,000
Commercial Real Estate Portfolio Segment | Risk Level, Monetary Default Default Risk | Multifamily | Houston, TX
Financing Receivable, Credit Quality Indicator [Line Items]
Transition of commercial loans held for sale to a risk rating two steps higher		11,500,000
Transition of commercial loans held for sale to a risk rating allowance after analysis two steps higher		500,000
Commercial Real Estate Portfolio Segment | Risk Level, Monetary Default Default Risk | Multifamily | Clarkston, GA
Financing Receivable, Credit Quality Indicator [Line Items]
Transition of commercial loans held for sale to a risk rating two steps higher		24,500,000
Transition of commercial loans held for sale to a risk rating allowance after analysis two steps higher		3,800,000
Commercial Real Estate Portfolio Segment | Risk Level, Monetary Default Default Risk | Multifamily | Ypsilanti, MI
Financing Receivable, Credit Quality Indicator [Line Items]
Transition of commercial loans held for sale to a risk rating two steps higher		11,900,000
Transition of commercial loans held for sale to a risk rating allowance after analysis two steps higher		$ 2,900,000
Commercial Real Estate Portfolio Segment | Risk Level, Monetary Default Default Risk | Multifamily | Dallas, TX
Financing Receivable, Credit Quality Indicator [Line Items]
Transition of commercial loans held for sale to a risk rating two steps higher				$ 31,600,000
Commercial Real Estate Portfolio Segment | Risk Level, Monetary Default Default Risk | Multifamily | Polk Country, FL
Financing Receivable, Credit Quality Indicator [Line Items]
Transition of commercial loans held for sale to a risk rating two steps higher				6,100,000
Transition of commercial loans held for sale to a risk rating allowance after analysis two steps higher				$ 600,000
Number of health properties | contract				2
Commercial Real Estate Portfolio Segment | Risk Level, Monetary Default Default Risk | Multi-Family Property Two | Philadelphia, PA
Financing Receivable, Credit Quality Indicator [Line Items]
Number of impaired office loans | loan		2
Commercial Real Estate Portfolio Segment | Risk Level, Imminent Maturity Default Risk | Multifamily | Orlando, FL
Financing Receivable, Credit Quality Indicator [Line Items]
Recognized interest on loan		$ 400,000

[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, 2025 and December 31, 2024, assets of consolidated VIEs totaled $996,233,424 and $1,058,138,406, respectively and the liabilities of consolidated VIEs totaled $774,692,458 and $831,001,605 respectively. See Note 4 for further discussion.