SCHEDULE IV MORTGAGE LOANS RECEIVABLE (Details 1) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Movement in Mortgage Loans on Real Estate [Roll Forward]
Balance at beginning	$ 70,166	$ 81,133	$ 71,376
Additions
New mortgage loans	13,123	16,422	11,703
Increase (decrease) of interest receivable on mortgage loans	6,329	668	9,878
Deductions
Amounts received	(6,077)	(26,230)	(11,824)
Non-cash reductions		(1,827)
Balance at ending	$ 83,541	$ 70,166	$ 81,133