COMMITMENTS AND CONTINGENCIES (Details Textual) $ in Millions		1 Months Ended	3 Months Ended		9 Months Ended		12 Months Ended	23 Months Ended
	Oct. 02, 2017	Oct. 31, 2017	Sep. 30, 2019 USD ($)	Sep. 30, 2018 USD ($)	Sep. 30, 2019 USD ($)	Sep. 30, 2018 USD ($)	Dec. 31, 2018 USD ($)	Sep. 30, 2019 USD ($)	Dec. 31, 2017 a
Commitments and Contingencies [Line Items]
Recovery of credit losses			$ (1.1)	$ (0.2)	$ (1.1)	$ (0.2)
Employer match percentage					4.00%
Employer contribution in period			0.1	$ 0.1
Fund expense reimbursements					$ (1.1)			$ (1.6)
Carinos Properties, LLC
Commitments and Contingencies [Line Items]
Settlement and related costs			$ 2.7
Intercreditor Agreement Claim
Commitments and Contingencies [Line Items]
Amount sought by third party					0.3
Pending Litigation | RNMA I
Commitments and Contingencies [Line Items]
Amount sought by third party							$ 3.1
New Mexico | Pending Litigation | Maniatis
Commitments and Contingencies [Line Items]
Area of land (in acres) | a									7,000
Texas | Pending Litigation
Commitments and Contingencies [Line Items]
Area of land (in acres) | a									111
Hotel
Commitments and Contingencies [Line Items]
Fund expense reimbursements					$ (0.1)
Hotel | MacArthur Loan | MacArthur Place
Commitments and Contingencies [Line Items]
Repayment guaranty	50.00%	50.00%			50.00%
L’Auberge Fund Manager, LLC | Preferred Interests
Commitments and Contingencies [Line Items]
Selling commissions as % of gross proceeds					6.00%
Nonaccountable expense reimbursements broker-dealers as percent of gross proceeds					1.00%