BUSINESS, BASIS OF PRESENTATION AND LIQUIDITY (Details)						1 Months Ended			3 Months Ended		68 Months Ended
	Jan. 22, 2020 USD ($)	Jul. 23, 2019 USD ($)	Apr. 01, 2019 USD ($)	Oct. 02, 2017	Sep. 30, 2017 USD ($)	Jul. 31, 2020 USD ($)	Jan. 31, 2020 USD ($)	Oct. 31, 2017 USD ($)	Mar. 31, 2020 USD ($) renewal_option	Mar. 31, 2019 USD ($)	Dec. 31, 2008 USD ($)	May 15, 2020 USD ($)	Apr. 30, 2020 USD ($)	Dec. 31, 2019 USD ($)
Business, Basis of Presentation and Liquidity [Line Items]
Amount of fund equity capital raised											$ 875,000,000
Accumulated deficit									$ 723,014,000					$ 718,790,000
Proceeds from sale of real estate owned and operating properties									18,339,000	$ 0
Cash and cash equivalents									9,897,000					7,925,000
REO assets acquired through foreclosure									86,200,000					104,000,000
Held For Sale
Business, Basis of Presentation and Liquidity [Line Items]
REO assets acquired through foreclosure									7,400,000					25,500,000
Other Real Estate Owned
Business, Basis of Presentation and Liquidity [Line Items]
REO assets acquired through foreclosure									33,300,000					$ 33,300,000
MacArthur Loan
Business, Basis of Presentation and Liquidity [Line Items]
Proceeds from issuance of debt									$ 1,400,000
Number of extensions available for loans acquired | renewal_option									2
Maturity term									1 year
MacArthur Loan | MacArthur Place
Business, Basis of Presentation and Liquidity [Line Items]
Proceeds from issuance of debt					$ 32,300,000			$ 37,000,000
MacArthur Loan | Hotel | MacArthur Place
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
Repayment guaranty				50.00%				50.00%	50.00%
Required minimum net worth								$ 50,000,000	$ 50,000,000.0
Series B Preferred Stock
Business, Basis of Presentation and Liquidity [Line Items]
Preferred stock redemption price									150.00%
Series B-1 and B-2 Cumulative Convertible Preferred Stock
Business, Basis of Presentation and Liquidity [Line Items]
Preferred stock, redemption amount									$ 39,600,000
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						2,600,000
Broadway Tower
Business, Basis of Presentation and Liquidity [Line Items]
Proceeds from sale of real estate owned and operating properties	$ 19,500,000								19,500,000
Payments for sale of real estate owned	$ 11,000,000								$ 11,000,000
Proceeds from sale of real estate, net							$ 8,000,000
Subsequent Event
Business, Basis of Presentation and Liquidity [Line Items]
Loan principal amount												$ 1,800,000	$ 1,800,000
Subsequent Event | Series B-1 and B-2 Cumulative Convertible Preferred Stock | Forecast
Business, Basis of Presentation and Liquidity [Line Items]
Preferred stock, redemption amount						$ 39,600,000
Subsequent Event | Series B-1 and B-2 Cumulative Convertible Preferred Stock | JPMorgan Chase Funding Inc. | Forecast
Business, Basis of Presentation and Liquidity [Line Items]
Proceeds from issuance of preferred equity						$ 2,600,000