COMMERCIAL LOAN INVESTMENTS - General Information (Details)				9 Months Ended
	Oct. 18, 2019 USD ($)	Jul. 05, 2019 USD ($) a	Jun. 14, 2019 USD ($) a item	Sep. 30, 2019 USD ($)
Accounts, Notes, Loans and Financing Receivable [Line Items]
Originated amount				$ 32,500,000
First Mortgage, 72-Acre Land Parcel, Orlando, FL
Accounts, Notes, Loans and Financing Receivable [Line Items]
Originated amount			$ 8,000,000	$ 8,000,000
Area of land (in acres) | a			72
Term			1 year
Number of extensions | item			2
Extension term			1 year
Interest rate (as a percent)			12.00%	12.00%
Origination fee (as a percent)			2.00%
Origination fee received			$ 160,000
Mortgage Note, 400 Josephine Street, Austin, TX
Accounts, Notes, Loans and Financing Receivable [Line Items]
Originated amount		$ 8,300,000		$ 8,250,000
Term		1 year
Interest rate (as a percent)		11.50%		11.50%
Origination fee (as a percent)		1.00%
Origination fee received		$ 82,500,000
First Mortgage, Golf Club, Daytona Beach, FL | Subsequent Event
Accounts, Notes, Loans and Financing Receivable [Line Items]
Originated amount	$ 2,070,000
Term	1 year
Interest rate (as a percent)	7.50%
Origination fee (as a percent)	1.50%
Origination fee received	$ 31,050
Ground Lease Loan, 400 Josephine Street, Austin, TX
Accounts, Notes, Loans and Financing Receivable [Line Items]
Originated amount		$ 16,250,000		$ 16,250,000
Area of land (in acres) | a		1.4
Term		99 years