COMMITMENTS AND CONTINGENCIES (Details)	1 Months Ended	3 Months Ended
	Jan. 31, 2016 shares	Mar. 31, 2016 USD ($) item	Mar. 31, 2015 USD ($)	Dec. 31, 2015 USD ($)
Commitments and contingencies
Outstanding loan commitments and approvals to fund loans		$ 110,393,000
Future obligations under leases to fund tenant improvements and in other future construction obligation		42,104,000
Future noncancelable minimum lease payments
2016 (Nine months ending December 31, 2016)		558,000
2017		749,000
2018		607,000
2019		503,000
2020		541,000
Thereafter		127,679,000
Total		130,637,000
Ground lease for one of the project
Commitments and contingencies
Current annual rent		$ 503,000
Period after which the annual rental payment will be increased by greater of 15% or 50% of the increase in the Consumer Price Index		5 years
Increase in annual rental payment after every 5 years, option one (as a percent)		15.00%
Increase in annual rental payment after every 5 years, option two (as a percent)		50.00%
Adjustment period used to calculate increase in the Consumer Price Index		5 years
Increase in rent payable during the balance of the lease term expressed as a percentage of rent payable during the immediately preceding lease year commencing on July 1, 2040 and 2065		10.00%
Rent expense		$ 438,000	$ 438,000
Straight line rent liability		12,457,000		$ 12,180,000
Office space in Dallas, Texas
Commitments and contingencies
Rent expense		58,000	58,000
Restricted share awards
Commitments and contingencies
Unrecognized compensation expense		5,000
Executive officers | Restricted share awards
Commitments and contingencies
Stock-based compensation expense		$ 5,000	18,000
Employment agreements | Executive officers
Commitments and contingencies
Number of employees covered under employment agreement | item		2
Multiplier used for the calculation of payments in the event of death of employee | item		2
Multiplier used for the calculation of payments in the event of disability to employee | item		1
Employment agreements | Executive officers | 2015 Equity Incentive Plan
Commitments and contingencies
Common stock issued | shares	76,423
Accrued payroll taxes				$ 444,000
Stock-based compensation expense		$ 0	$ 316,000
Unrecognized compensation expense		0
Commercial Real estate loans, subject to secured borrowings
Commitments and contingencies
Outstanding loan commitments and approvals to fund loans		89,946,000
Loan commitments expected to be funded by a participant through participation agreement		$ 44,074,000