SEGMENTS (Summary of Assets by Segment and Reconciliation of Segment Assets to Total Assets) (Details) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2017	Dec. 31, 2016
Reconciliation of total segment assets to total assets
Assets	$ 6,667,449	$ 6,367,382
Operating Segments [Member]
Reconciliation of total segment assets to total assets
Assets	6,107,625	5,779,048
Operating Segments [Member] | Master Planned Communities [Member]
Reconciliation of total segment assets to total assets
Assets	2,041,285	1,982,639
Operating Segments [Member] | Operating Assets [Member]
Reconciliation of total segment assets to total assets
Assets	2,482,724	2,344,949
Additional information
Increase (decrease) in assets	137,800
Operating Segments [Member] | Strategic Developments [Member]
Reconciliation of total segment assets to total assets
Assets	1,583,616	1,451,460
Additional information
Increase (decrease) in assets	132,200
Corporate, Non-Segment [Member]
Reconciliation of total segment assets to total assets
Assets	$ 559,824	$ 588,334