MORTGAGE LOANS, NET (Details 1) $ in Thousands	12 Months Ended
	Dec. 31, 2017 USD ($) Loan Loans	Dec. 31, 2016 USD ($) Loan Loans	Dec. 31, 2015 USD ($)
Mortgage Loans on Real Estate [Line Items]
Outstanding Principal and Interest	$ 32,350	$ 13,060
Valuation Allowance	(12,682)	(12,682)	$ (12,892)
Net Carrying Value	$ 19,668	$ 378	$ 11,147
Percent (in percentage)	100.00%	100.00%
Number Of Loans | Loan	4	3
Arizona [Member]
Mortgage Loans on Real Estate [Line Items]
Outstanding Principal and Interest	$ 12,682	$ 12,682
Valuation Allowance	(12,682)	(12,682)
Net Carrying Value	$ 0	$ 0
Percent (in percentage)	39.20%	97.10%
Number Of Loans | Loan	2	2
California [Member]
Mortgage Loans on Real Estate [Line Items]
Outstanding Principal and Interest	$ 7,329	$ 0
Valuation Allowance	0	0
Net Carrying Value	$ 7,329	$ 0
Percent (in percentage)	22.70%	0.00%
Number Of Loans | Loan	1	0
New Mexico [Member]
Mortgage Loans on Real Estate [Line Items]
Outstanding Principal and Interest	$ 0	$ 378
Valuation Allowance	0	0
Net Carrying Value	$ 0	$ 378
Percent (in percentage)	0.00%	2.90%
Number Of Loans | Loans	0	1
Texas [Member]
Mortgage Loans on Real Estate [Line Items]
Outstanding Principal and Interest	$ 12,339	$ 0
Valuation Allowance	0	0
Net Carrying Value	$ 12,339	$ 0
Percent (in percentage)	38.10%	0.00%
Number Of Loans | Loans	1	0