SEGMENTS (Summary of Assets by Segment and Reconciliation of Segment Assets to Total Assets) (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Reconciliation of total segment assets to total assets
Assets	$ 7,355,799	$ 6,729,064
Operating Segments
Reconciliation of total segment assets to total assets
Assets	7,007,171	5,999,879
Operating Segments | Master Planned Communities
Reconciliation of total segment assets to total assets
Assets	2,076,678	1,999,090
Operating Segments | Operating Assets
Reconciliation of total segment assets to total assets
Assets	3,124,287	2,489,177
Operating Segments | Strategic Developments
Reconciliation of total segment assets to total assets
Assets	1,806,206	1,511,612
Corporate
Reconciliation of total segment assets to total assets
Assets	$ 348,628	$ 729,185