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Carrying value as of the balance sheet date of obligations incurred through that date and payable for professional fees, such as for legal and accounting services received.

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Percentage points added to the reference rate to compute the variable rate on the debt instrument.

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Effective interest rate for the funds borrowed under the debt agreement considering interest compounding and original issue discount or premium.

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RELATED PARTY TRANSACTIONS AND COMMITMENTS - Contractual Agreements (Details) $ in Thousands			1 Months Ended	12 Months Ended
	Jul. 24, 2014 USD ($)	Jul. 22, 2014 USD ($)	Jun. 30, 2011	Dec. 31, 2018 USD ($) Loan	Dec. 31, 2017 USD ($) Loan	Dec. 31, 2016 USD ($)	Dec. 31, 2015 USD ($)	Jul. 01, 2017 USD ($)
Related Party Transaction [Line Items]
Syndicated financing of investment				$ 14,257	$ 725
Professional fees				4,202	5,226
Advances to partnerships				$ 0	$ 650
Number of loans \| Loan				6	4
Chief Executive Officer [Member]
Related Party Transaction [Line Items]
Percentage of carrying value used to calculate legacy assets performance fee				110.00%
Legacy fees				$ 100	$ 660
Juniper Capital Partners Llc [Member]
Related Party Transaction [Line Items]
Consulting agreement initial period			3 years
Consulting agreement renewable terms			P2Y
JCP Realty Advisors, LLC [Member]
Related Party Transaction [Line Items]
Percentage of carrying value used to calculate legacy assets performance fee	110.00%
Legacy fees				200	1,200
Annual consulting fees	$ 500	$ 600
Origination fee	1.25%
Percentage of legacy assets performance fee	5.50%
Consulting fees				500	500
Unconsolidated Partnerships [Member]
Related Party Transaction [Line Items]
Advances to partnerships				4,300
Notes receivable				$ 100	4,700
Maximum borrowing capacity						$ 700		$ 5,000
Effective rate (percentage)				7.50%
Utah JV [Member]
Related Party Transaction [Line Items]
Syndicated financing of investment				$ 1,900		$ 1,700	$ 1,700
Professional fees				100	600
Legal and other professional fees payable				$ 0	$ 0
Related Parties [Member] \| Utah JV [Member] \| Director [Member]
Related Party Transaction [Line Items]
Syndicated financing of investment							1,100
Related Parties [Member] \| Utah JV [Member] \| Board of Directors [Member]
Related Party Transaction [Line Items]
Syndicated financing of investment							200
Related Parties [Member] \| Utah JV [Member] \| Law Firm [Member]
Related Party Transaction [Line Items]
Syndicated financing of investment							$ 100
Prime Rate [Member]
Related Party Transaction [Line Items]
Annual interest rate				5.50%	4.50%
Prime Rate [Member] \| Minimum [Member] \| Unconsolidated Partnerships [Member]
Related Party Transaction [Line Items]
Variable rate				2.00%
Prime Rate [Member] \| Maximum [Member] \| Unconsolidated Partnerships [Member]
Related Party Transaction [Line Items]
Variable rate				8.00%
Mortgage Receivable [Member]
Related Party Transaction [Line Items]
Number of loans acquired \| Loan					2
New loan originations, face amount					$ 19,900
Discount on loans acquired					$ 19,300
Pledged equity interest, collateral percent					100.00%
Number of extensions available for loans acquired					3
Number of extensions exercised					2
Number of loans \| Loan				6	4
Carrying amount of mortgages				$ 6,000	$ 8,100
Mortgage Receivable [Member] \| Minimum [Member]
Related Party Transaction [Line Items]
Annual interest rate of loans acquired				9.70%	8.70%
Mortgage Receivable [Member] \| Maximum [Member]
Related Party Transaction [Line Items]
Annual interest rate of loans acquired				18.00%	12.00%
Variable Interest Entity [Member] \| Lakeside JV [Member]
Related Party Transaction [Line Items]
Advances to partnerships					$ 700
Variable Interest Entity [Member] \| Prime Rate [Member] \| Lakeside JV [Member]
Related Party Transaction [Line Items]
Variable rate					8.00%
Mezzanine Loan One [Member] \| Mortgage Receivable [Member]
Related Party Transaction [Line Items]
Annual interest rate				9.75%
Annual interest rate of loans acquired				12.26%
Mezzanine Loan Two [Member] \| Mortgage Receivable [Member]
Related Party Transaction [Line Items]
Number of extensions available for loans acquired				3	3
Annual interest rate				7.25%	7.25%
Annual interest rate of loans acquired				9.71%
Private Placement [Member]
Related Party Transaction [Line Items]
Number of loans \| Loan				1	2
Nonperforming Financing Receivable [Member] \| Mortgage Receivable [Member]
Related Party Transaction [Line Items]
Carrying amount of mortgages				$ 7,900