REAL ESTATE AND OTHER AFFILIATES (Relevant Financial Information) (Details) - The Summit - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017	Dec. 31, 2017
Real Estate and Other Affiliates
Total Assets	$ 189.8		$ 166.9
Total Liabilities	131.9		118.9
Total Equity	57.9		$ 48.0
Revenues	23.4	$ 11.5
Expenses	11.1	5.3
Net income	$ 13.3	$ 6.5