MORTGAGE LOANS, NET (Details 8) $ in Thousands	12 Months Ended
	Dec. 31, 2017 USD ($) Loan	Dec. 31, 2016 USD ($) Loan	Dec. 31, 2015 USD ($)
Mortgage Loans on Real Estate [Line Items]
Mortgage Loans On Real Estate Principal Amount	$ 32,350	$ 13,060
Valuation Allowance	(12,682)	(12,682)	$ (12,892)
Net Carrying Value	$ 19,668	$ 378	$ 11,147
Total Loan Percentage (in percentage)	100.00%	100.00%
Total Number Of Loans (in loans) | Loan	4	3
Pre Entitled Land [Member]
Mortgage Loans on Real Estate [Line Items]
Mortgage Loans On Real Estate Principal Amount	$ 0	$ 378
Total Loan Percentage (in percentage)	0.00%	2.90%
Total Number Of Loans (in loans) | Loan	0	1
Pre Entitled Land [Member] | Processing Entitlements [Member]
Mortgage Loans on Real Estate [Line Items]
Mortgage Loans On Real Estate Principal Amount	$ 0	$ 378
Total Loan Percentage (in percentage)	0.00%	2.90%
Total Number Of Loans (in loans) | Loan	0	1
Entitled Land [Member]
Mortgage Loans on Real Estate [Line Items]
Mortgage Loans On Real Estate Principal Amount	$ 12,682	$ 12,682
Total Loan Percentage (in percentage)	39.20%	97.10%
Total Number Of Loans (in loans) | Loan	2	2
Entitled Land [Member] | Held For Investment [Member]
Mortgage Loans on Real Estate [Line Items]
Mortgage Loans On Real Estate Principal Amount	$ 12,682	$ 12,682
Total Loan Percentage (in percentage)	39.20%	97.10%
Total Number Of Loans (in loans) | Loan	2	2
Construction and Existing Structures [Member]
Mortgage Loans on Real Estate [Line Items]
Mortgage Loans On Real Estate Principal Amount	$ 19,668	$ 0
Total Loan Percentage (in percentage)	60.80%	0.00%
Total Number Of Loans (in loans) | Loan	2	0
Construction and Existing Structures [Member] | Held For Investment [Member]
Mortgage Loans on Real Estate [Line Items]
Mortgage Loans On Real Estate Principal Amount	$ 19,668	$ 0
Total Loan Percentage (in percentage)	60.80%	0.00%
Total Number Of Loans (in loans) | Loan	2	0