SEGMENTS (Summary of Assets by Segment and Reconciliation of Segment Assets to Total Assets) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Dec. 31, 2016
Reconciliation of total segment assets to total assets
Assets	$ 6,408,142	$ 6,367,382
Operating Segments [Member]
Reconciliation of total segment assets to total assets
Assets	5,952,215	5,779,048
Operating Segments [Member] | Master Planned Communities [Member]
Reconciliation of total segment assets to total assets
Assets	1,996,294	1,982,639
Operating Segments [Member] | Operating Assets [Member]
Reconciliation of total segment assets to total assets
Assets	2,437,638	2,344,949
Additional information
Increase (decrease) in assets	92,700
Operating Segments [Member] | Strategic Developments [Member]
Reconciliation of total segment assets to total assets
Assets	1,518,283	1,451,460
Additional information
Increase (decrease) in assets	66,800
Corporate, Non-Segment [Member]
Reconciliation of total segment assets to total assets
Assets	455,927	$ 588,334
Additional information
Increase (decrease) in assets	$ 132,400