LOANS RECEIVABLE AND OTHER INVESTMENTS - Schedule of Loans Receivable and Other Investments (Details) $ in Thousands	Sep. 30, 2016 USD ($) loan	Dec. 31, 2015 USD ($)
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans Receivable, Quantity | loan	11
Loans Receivable, Principal Balance	$ 54,471
Loans Receivable, Book Value	$ 54,613	$ 274,484
Loans Receivable, Weighted Average Contractual Interest Rate / Rate of Return	9.30%
Loans Receivable, Weighted Average Annualized Effective Interest Rate / Rate of Return	9.10%
Loan loss allowance	$ (3,120)	(4,300)
Loans Receivable, Net Amount	$ 51,493	270,184
Preferred Equity Investment, Quantity | loan	11
Preferred Equity Investment, Principal Balance	$ 42,594	29,643
Preferred Equity Investment, Book Value	$ 42,973	29,993
Preferred Equity Investment, Weighted Average Contractual Interest Rate / Rate of Return	12.90%
Preferred Equity Investment, Weighted Average Annualized Effective Interest Rate / Rate of Return	12.90%
Total Investments, Quantity | loan	22
Total Investments, Principal Balance	$ 97,065
Total Investments, Book Value	$ 94,466	300,177
Total Investments, Weighted Average Contractual Interest Rate / Rate of Return	10.90%
Total Investments, Weighted Average Annualized Effective Interest Rate / Rate of Return	10.80%
Mortgage [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans Receivable, Quantity | loan	5
Loans Receivable, Principal Balance	$ 38,492
Loans Receivable, Book Value	$ 38,534	166,277
Loans Receivable, Weighted Average Contractual Interest Rate / Rate of Return	9.10%
Loans Receivable, Weighted Average Annualized Effective Interest Rate / Rate of Return	8.90%
Construction [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans Receivable, Quantity | loan	1
Loans Receivable, Principal Balance	$ 590
Loans Receivable, Book Value	$ 637	75,201
Loans Receivable, Weighted Average Contractual Interest Rate / Rate of Return	8.00%
Loans Receivable, Weighted Average Annualized Effective Interest Rate / Rate of Return	7.70%
Mezzanine [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans Receivable, Quantity | loan	1
Loans Receivable, Principal Balance	$ 9,640
Loans Receivable, Book Value	$ 9,660	15,613
Loans Receivable, Weighted Average Contractual Interest Rate / Rate of Return	11.00%
Loans Receivable, Weighted Average Annualized Effective Interest Rate / Rate of Return	10.80%
Pre-development [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans Receivable, Quantity | loan	3
Loans Receivable, Principal Balance	$ 3,926
Loans Receivable, Book Value	$ 3,959	3,768
Loans Receivable, Weighted Average Contractual Interest Rate / Rate of Return	9.00%
Loans Receivable, Weighted Average Annualized Effective Interest Rate / Rate of Return	7.60%
Debtor-in-possession [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans Receivable, Quantity | loan	1
Loans Receivable, Principal Balance	$ 1,823
Loans Receivable, Book Value	$ 1,823	$ 13,625
Loans Receivable, Weighted Average Contractual Interest Rate / Rate of Return	5.00%
Loans Receivable, Weighted Average Annualized Effective Interest Rate / Rate of Return	5.00%