OPERATING PROPERTIES, REAL ESTATE HELD FOR SALE AND OTHER REAL ESTATE OWNED (Details)	3 Months Ended		6 Months Ended
	Jun. 30, 2019 USD ($) Property	Jun. 30, 2018 USD ($)	Jun. 30, 2019 USD ($)	Jun. 30, 2018 USD ($)	May 29, 2019 USD ($)	Dec. 31, 2018 USD ($)
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
REO assets acquired through foreclosure	$ 104,800,000		$ 104,800,000			$ 75,000,000
Assets	157,038,000		157,038,000			143,639,000
Liabilities	65,614,000		65,614,000			47,066,000
Operating lease right of use assets	1,440,000		1,440,000
Operating lease liabilities in accounts payable and other accrued expenses	1,548,000	$ 0	1,548,000	$ 0
Gain on disposal of assets	20,000	142,000	20,000	395,000
Proceeds from sale of REO			39,000	526,000
Real estate operating costs and expenses	$ 3,700,000	2,300,000	6,200,000	4,700,000
Cash outlays for capitalized development costs			9,804,000	3,157,000
Broadway Tower
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Assets					$ 26,000,000
Liabilities					16,000,000
Operating lease right of use assets					600,000
Operating lease liabilities in accounts payable and other accrued expenses					$ 600,000
Number of real estate properties sold (in properties) | Property	1
Gain on disposal of assets	$ 20,000	100,000		400,000
Proceeds from sale of REO	39,000	$ 200,000		$ 500,000
Held For Sale
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
REO assets acquired through foreclosure	7,400,000		7,400,000			7,400,000
Operating Properties
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
REO assets acquired through foreclosure	63,700,000		63,700,000			33,900,000
Other Real Estate Owned
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
REO assets acquired through foreclosure	$ 33,700,000		$ 33,700,000			$ 33,700,000