ACQUISITIONS (Details) - USD ($)		3 Months Ended			12 Months Ended
	Oct. 29, 2009	Dec. 31, 2016	Dec. 31, 2015	Sep. 30, 2013	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Business Acquisition [Line Items]
Term of contract management agreement					40 years
Number of years until the contingent liability becomes payable					4 years
Number of trailing months of operating cash flow used to determine contingent liability					12 months
Fair value adjustment of contingent liability		$ (100,000)			$ 0	$ (100,000)	$ 0
Arizona Partnership [Member]
Business Acquisition [Line Items]
Cash paid for acquisition	$ 700,000
Fair value of contingent liability	$ 850,000		$ 321,000	$ 421,000		$ 321,000
Number of years until the contingent liability becomes payable					4 years
Number of trailing months of operating cash flow used to determine contingent liability					12 months
Fair value adjustment of contingent liability			100,000	179,000
Nonoperating income			$ 100,000	$ 179,000