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RELATED PARTY TRANSACTIONS (Details) - Joint ventures related to affiliated real estate investments - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
RELATED PARTY TRANSACTIONS
Management fees	$ 3.8	$ 2.9	$ 1.0
Mortgage loans receivable from consolidated joint ventures	$ 25.5	34.7
Acquisition fee (as a percent)	0.50%
Acquisition fees	$ 0.5	1.8
Amount due to the entity from joint venture	$ 7.5	$ 3.3

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- Definition

The percentage charged per operating agreement for acquisitions.

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