MORTGAGE INVESTMENTS, LOAN PARTICIPATIONS AND LOAN SALES (Details 2) $ in Thousands	12 Months Ended
	Dec. 31, 2016 USD ($) Loan	Dec. 31, 2015 USD ($) Loan	Dec. 31, 2014 USD ($)
Mortgage Loans on Real Estate [Line Items]
Mortgage Loans On Real Estate Gross Amount	$ 13,060	$ 24,039
Valuation Allowance	(12,682)	(12,892)	$ (15,562)
Net Carrying Value	$ 378	$ 11,147	$ 24,539
Total Loan Percentage (in percentage)	100.00%	100.00%
Total Number Of Loans (in loans) | Loan	3	6
Matured [Member]
Mortgage Loans on Real Estate [Line Items]
Mortgage Loans On Real Estate Gross Amount	$ 12,682	$ 12,682
Mortgage Loans On Real Estate Quarterly Maturity Percentage Of Loans (in percentage)	97.10%	52.80%
Mortgage Loans On Real Estate Quarterly Maturity Number Of Loans (in loans) | Loan	2	2
Q1 2016 [Member]
Mortgage Loans on Real Estate [Line Items]
Mortgage Loans On Real Estate Gross Amount		$ 7,800
Mortgage Loans On Real Estate Quarterly Maturity Percentage Of Loans (in percentage)		32.40%
Mortgage Loans On Real Estate Quarterly Maturity Number Of Loans (in loans) | Loan		1
Q12018 [Member]
Mortgage Loans on Real Estate [Line Items]
Mortgage Loans On Real Estate Gross Amount	$ 0
Mortgage Loans On Real Estate Quarterly Maturity Percentage Of Loans (in percentage)	0.00%
Mortgage Loans On Real Estate Quarterly Maturity Number Of Loans (in loans) | Loan	0
Q12019 [Member]
Mortgage Loans on Real Estate [Line Items]
Mortgage Loans On Real Estate Gross Amount	$ 0
Mortgage Loans On Real Estate Quarterly Maturity Percentage Of Loans (in percentage)	0.00%
Mortgage Loans On Real Estate Quarterly Maturity Number Of Loans (in loans) | Loan	0
Q4 2016 [Member]
Mortgage Loans on Real Estate [Line Items]
Mortgage Loans On Real Estate Gross Amount		$ 3,166
Mortgage Loans On Real Estate Quarterly Maturity Percentage Of Loans (in percentage)		13.20%
Mortgage Loans On Real Estate Quarterly Maturity Number Of Loans (in loans) | Loan		1
Q1 2017 [Member]
Mortgage Loans on Real Estate [Line Items]
Mortgage Loans On Real Estate Gross Amount	$ 0	$ 0
Mortgage Loans On Real Estate Quarterly Maturity Percentage Of Loans (in percentage)	0.00%	0.00%
Mortgage Loans On Real Estate Quarterly Maturity Number Of Loans (in loans) | Loan	0	0
Q1 2020 [Member]
Mortgage Loans on Real Estate [Line Items]
Mortgage Loans On Real Estate Gross Amount	$ 0	$ 45
Mortgage Loans On Real Estate Quarterly Maturity Percentage Of Loans (in percentage)	0.00%	0.20%
Mortgage Loans On Real Estate Quarterly Maturity Number Of Loans (in loans) | Loan	0	1
Thereafter [Member]
Mortgage Loans on Real Estate [Line Items]
Mortgage Loans On Real Estate Gross Amount	$ 378	$ 346
Mortgage Loans On Real Estate Quarterly Maturity Percentage Of Loans (in percentage)	2.90%	1.40%
Mortgage Loans On Real Estate Quarterly Maturity Number Of Loans (in loans) | Loan	1	1