BUSINESS, BASIS OF PRESENTATION AND LIQUIDITY (Details Textual)				1 Months Ended				3 Months Ended				9 Months Ended		12 Months Ended	23 Months Ended	68 Months Ended
	Sep. 25, 2019 USD ($) $ / shares shares	Jul. 23, 2019 USD ($)	Oct. 02, 2017	Nov. 14, 2019 USD ($) Loan	May 31, 2019	Nov. 30, 2017 USD ($)	Oct. 31, 2017 USD ($)	Sep. 30, 2019 USD ($) $ / shares shares	Jun. 30, 2019 USD ($)	Mar. 31, 2019 USD ($) renewal_option	Sep. 30, 2018 USD ($)	Sep. 30, 2019 USD ($) Loan renewal_option $ / shares shares	Sep. 30, 2018 USD ($)	Dec. 31, 2018 USD ($) Loan	Sep. 30, 2019 USD ($) $ / shares shares	Dec. 31, 2008 USD ($)	Feb. 09, 2018 shares	Jul. 31, 2014 shares
Business, Basis of Presentation and Liquidity [Line Items]
Amount of fund equity capital raised																$ 875,000,000
Accumulated deficit								$ 710,885,000				$ 710,885,000		$ 692,876,000	$ 710,885,000
Proceeds from issuance of preferred equity												6,000,000	$ 30,000,000
Debt								$ 52,164,000				$ 52,164,000			$ 52,164,000
Profit distribution to related party, monthly accruing rate								7.00%				7.00%			7.00%
Cash and cash equivalents								$ 7,447,000				$ 7,447,000		25,452,000	$ 7,447,000
REO assets acquired through foreclosure								105,800,000				105,800,000		75,000,000	105,800,000
Provision for (recovery of) credit losses, net								2,598,000			$ 0	1,463,000	$ (175,000)
Mortgages
Business, Basis of Presentation and Liquidity [Line Items]
Debt									$ 13,200,000
Debt amount									11,000,000
Held For Sale
Business, Basis of Presentation and Liquidity [Line Items]
REO assets acquired through foreclosure								7,400,000				7,400,000		7,400,000	7,400,000
Other Real Estate Owned
Business, Basis of Presentation and Liquidity [Line Items]
REO assets acquired through foreclosure								33,300,000				33,300,000		$ 33,700,000	33,300,000
MacArthur Loan
Business, Basis of Presentation and Liquidity [Line Items]
Proceeds from issuance of debt							$ 32,300,000					$ 14,800,000
Number of extensions available for loans acquired | renewal_option										2		2
Maturity term										1 year		1 year
Hotel | MacArthur Loan
Business, Basis of Presentation and Liquidity [Line Items]
Debt amount								37,000,000				$ 37,000,000			37,000,000
Hotel | MacArthur Place | MacArthur Loan
Business, Basis of Presentation and Liquidity [Line Items]
Proceeds from issuance of debt							19,400,000
Required minimum liquidity							$ 5,000,000	5,000,000.0		$ 37,000,000		5,000,000.0			5,000,000.0
Covenant compliance, reserve accounts								2,000,000		$ 2,000,000		$ 2,000,000			2,000,000
Repayment guaranty			50.00%				50.00%					50.00%
Required minimum net worth							$ 50,000,000	$ 50,000,000.0				$ 50,000,000.0			50,000,000.0
Preferred Interests | L’Auberge Fund Manager, LLC
Business, Basis of Presentation and Liquidity [Line Items]
Proceeds from private offering						$ 25,000,000						$ 22,500,000			$ 1,600,000
Private offering acquired						$ 17,800,000
Profit distribution to related party, monthly accruing rate								7.00%				7.00%			7.00%
Series B-4 Preferred Stock
Business, Basis of Presentation and Liquidity [Line Items]
Additional issue of preferred stock (in shares) | shares								1,875,000				1,875,000			1,875,000
Preferred stock, accrued and unpaid dividends, percentage	5.65%							5.65%
Preferred stock redemption price	145.00%							145.00%				145.00%
Series B-4 Preferred Stock | JPMorgan Chase Funding Inc.
Business, Basis of Presentation and Liquidity [Line Items]
Additional issue of preferred stock (in shares) | shares	1,875,000							1,875,000				1,875,000			1,875,000
Preferred stock per share (in dollars per share) | $ / shares	$ 3.20							$ 3.20				$ 3.20			$ 3.20
Proceeds from issuance of preferred equity	$ 6,000,000							$ 6,000,000
Series B Preferred Stock
Business, Basis of Presentation and Liquidity [Line Items]
Preferred stock redemption price												150.00%
Series B Preferred Stock | JPMorgan Chase Funding Inc.
Business, Basis of Presentation and Liquidity [Line Items]
Additional issue of preferred stock (in shares) | shares																	2,352,941
Series B-1 and B-2 Cumulative Convertible Preferred Stock
Business, Basis of Presentation and Liquidity [Line Items]
Additional issue of preferred stock (in shares) | shares																		8,200,000
Series B-1 and B-2 Cumulative Convertible Preferred Stock | JPMorgan Chase Funding Inc.
Business, Basis of Presentation and Liquidity [Line Items]
Proceeds from issuance of preferred equity		$ 2,600,000										$ 2,600,000
Commitment To Fund Equity | Hotel | MacArthur Loan
Business, Basis of Presentation and Liquidity [Line Items]
Commitment to provide funds								$ 27,700,000				$ 27,700,000			$ 27,700,000
Mortgage Receivable
Business, Basis of Presentation and Liquidity [Line Items]
Number of loans | Loan												4		6
Mortgage loans, net												$ 11,700,000		$ 23,200,000
Mortgage Receivable | Mezzanine Loan
Business, Basis of Presentation and Liquidity [Line Items]
Securities received as collateral									$ 7,600,000
Pledged equity interest, collateral percent					100.00%				100.00%
Mortgage loans, net												$ 8,200,000
Subsequent Event
Business, Basis of Presentation and Liquidity [Line Items]
Provision for (recovery of) credit losses, net				$ 2,600,000
Subsequent Event | Mortgage Receivable | Mezzanine Loan
Business, Basis of Presentation and Liquidity [Line Items]
Number of loans | Loan				1
Mortgage loans, net				$ 12,300,000