MORTGAGE LOANS RECEIVABLE (Details) $ in Thousands		12 Months Ended
		Dec. 31, 2018 USD ($)	Dec. 31, 2017 USD ($)	Dec. 31, 2016 USD ($)	Dec. 31, 2015 USD ($)
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate	[1],[2]	$ 2,594
Mortgage recourse loan		2,594
First Mortgage [Member]
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate		$ 2,594	$ 4,581	$ 4,752	$ 4,875
Number of mortgage loans receivable		1	2	2
Effective interest rate (in hundredths)		5.15%	5.15%	5.25%
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate, Final Maturity Date		Dec. 21, 2022	Dec. 21, 2022	Oct. 25, 2017

[1] Changes in mortgage loans follow: Years Ended December 31,2018 2017 2016(In thousands)Balance at beginning of year$4,581 4,752 4,875Payments on mortgage loans receivable(1,987) (171) (123)Balance at end of year$2,594 4,581 4,752

[2] The aggregate cost for federal income tax purposes is approximately $2.59 million. The federal income tax return for the year ended December 31, 2018, has not been filed and, accordingly, the income tax basis of mortgage loans as of December 31, 2018, is based on preliminary data.