SEGMENTS (Reconciliation of Segment Revenue to Consolidated Revenue) (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Reconciliation of Segment Basis Revenues to GAAP Revenues
Total revenues	$ 300,983	$ 258,736	$ 308,639	$ 231,762	$ 278,546	$ 242,265	$ 273,514	$ 240,680	$ 1,100,120	$ 1,035,005	$ 797,088
Master Planned Communities | Operating Segments
Reconciliation of Segment Basis Revenues to GAAP Revenues
Total revenues									299,543	253,304	229,865
Operating Assets | Operating Segments
Reconciliation of Segment Basis Revenues to GAAP Revenues
Total revenues									327,555	295,165	259,306
Strategic Developments | Operating Segments
Reconciliation of Segment Basis Revenues to GAAP Revenues
Total revenues									$ 473,022	$ 486,536	$ 307,917