Schedule IV - Mortgage Loans on Real Estate (Details) - USD ($)	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Prior Liens	$ 0
Carrying Amount of Loans	1,076,865,099
Carrying Amount of Loans	1,071,889,518	$ 1,001,825,294	$ 547,345,334
Multi-family | FLORIDA | Senior loan in excess of 3% | Borrower A
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Prior Liens	0
Carrying Amount of Loans	51,375,000
Carrying Amount of Loans	$ 51,375,000
Multi-family | FLORIDA | Senior loan in excess of 3% | London Interbank Offered Rate (LIBOR) | Borrower A
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Interest Payment Rates	3.05%
Multi-family | Virginia | Senior loan in excess of 3% | Borrower B
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Prior Liens	$ 0
Carrying Amount of Loans	36,781,588
Carrying Amount of Loans	$ 36,781,588
Multi-family | Virginia | Senior loan in excess of 3% | London Interbank Offered Rate (LIBOR) | Borrower B
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Interest Payment Rates	3.27%
Multi-family | New Jersey | Senior loan in excess of 3% | Borrower C
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Prior Liens	$ 0
Carrying Amount of Loans	34,690,000
Carrying Amount of Loans	$ 34,690,000
Multi-family | New Jersey | Senior loan in excess of 3% | London Interbank Offered Rate (LIBOR) | Borrower C
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Interest Payment Rates	3.05%
Multi-family | Georgia | Senior loan in excess of 3% | Borrower D
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Prior Liens	$ 0
Carrying Amount of Loans	33,500,000
Carrying Amount of Loans	$ 33,500,000
Multi-family | Georgia | Senior loan in excess of 3% | London Interbank Offered Rate (LIBOR) | Borrower D
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Interest Payment Rates	3.00%
Multi-family | Tennessee | Senior loan in excess of 3% | Borrower E
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Prior Liens	$ 0
Carrying Amount of Loans	33,360,000
Carrying Amount of Loans	$ 33,360,000
Multi-family | Tennessee | Senior loan in excess of 3% | London Interbank Offered Rate (LIBOR) | Borrower E
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Interest Payment Rates	3.65%
Multi-family | Diversified | Senior loan less than 3%
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Prior Liens	$ 0
Multi-family | Diversified | Senior loan less than 3% | London Interbank Offered Rate (LIBOR)
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Carrying Amount of Loans	635,190,012
Carrying Amount of Loans	635,190,012
Multi-family | Diversified | Senior loan less than 3% | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Carrying Amount of Loans	135,388,390
Carrying Amount of Loans	$ 135,326,238
Multi-family | Diversified | Senior loan less than 3% | Minimum | London Interbank Offered Rate (LIBOR)
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Interest Payment Rates	2.90%
Multi-family | Diversified | Senior loan less than 3% | Minimum | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Interest Payment Rates	3.25%
Multi-family | Diversified | Senior loan less than 3% | Maximum | London Interbank Offered Rate (LIBOR)
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Interest Payment Rates	3.95%
Multi-family | Diversified | Senior loan less than 3% | Maximum | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Interest Payment Rates	4.15%
Healthcare | Diversified | Senior loan less than 3%
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Prior Liens	$ 0
Carrying Amount of Loans	70,000,000
Carrying Amount of Loans	$ 69,325,986
Healthcare | Diversified | Senior loan less than 3% | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Interest Payment Rates	4.00%
Self-Storage | Washington | Senior loan less than 3%
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Prior Liens	$ 0
Carrying Amount of Loans	19,648,818
Carrying Amount of Loans	$ 19,668,071
Self-Storage | Washington | Senior loan less than 3% | London Interbank Offered Rate (LIBOR)
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Interest Payment Rates	3.60%
Retail | Texas | Senior loan less than 3%
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Prior Liens	$ 0
Carrying Amount of Loans	16,672,623
Carrying Amount of Loans	$ 16,672,623
Retail | Texas | Senior loan less than 3% | London Interbank Offered Rate (LIBOR)
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Interest Payment Rates	4.60%
Office | Illinois | Senior loan less than 3%
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Prior Liens	$ 0
Carrying Amount of Loans	10,258,668
Carrying Amount of Loans	$ 6,000,000
Office | Illinois | Senior loan less than 3% | London Interbank Offered Rate (LIBOR)
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Interest Payment Rates	3.75%