REAL ESTATE AND OTHER AFFILIATES (Relevant Financial Information) (Details) - The Summit - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017	Dec. 31, 2017
Real Estate and Other Affiliates
Total Assets	$ 213.9		$ 213.9		$ 166.9
Total Liabilities	143.4		143.4		118.9
Total Equity	70.5		70.5		$ 48.0
Revenues	37.5	$ 20.7	60.9	$ 32.2
Net income	14.1	9.8	25.2	15.1
Gross Margin	$ 14.2	$ 12.1	$ 27.5	$ 18.6