SEGMENTS (Summary of Segment Operating Results) (Details) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2016 USD ($)	Sep. 30, 2016 USD ($)	Jun. 30, 2016 USD ($)	Mar. 31, 2016 USD ($)	Dec. 31, 2015 USD ($)	Sep. 30, 2015 USD ($)	Jun. 30, 2015 USD ($)	Mar. 31, 2015 USD ($)	Dec. 31, 2016 USD ($) segment	Dec. 31, 2015 USD ($)	Dec. 31, 2014 USD ($)
Segments reporting
Number of reportable segments | segment									3
Land sales									$ 215,318	$ 187,399	$ 325,099
Builder price participation									21,386	26,846	20,908
Minimum rents									173,268	150,805	97,234
Other land revenues									16,232	14,803	16,503
Other rental and property revenues									16,585	27,035	24,982
Total revenues	$ 278,546	$ 242,265	$ 273,514	$ 240,680	$ 229,393	$ 203,442	$ 209,163	$ 155,090	1,035,005	797,088	634,565
Tenant recoveries									44,330	39,542	28,353
Condominium rights and unit sales									485,634	305,284	83,565
Hospitality revenues									62,252	45,374	37,921
Cost of sales - land									95,727	88,065	119,672
Other property operating costs									65,978	72,751	67,034
Rental property real estate taxes									26,847	24,138	17,407
Rental property maintenance costs									12,392	10,712	9,135
Hospitality operating costs									49,359	34,839	31,829
Provision for (recovery of) doubtful accounts									5,664	4,030	1,404
Demolition costs									2,212	3,297	6,734
Provision for impairment									35,734
Development-related marketing costs									22,184	25,466	22,783
Depreciation and amortization									95,864	98,997	55,958
Other income, net									(116,268)	(1,829)	(29,471)
Interest income									(1,359)	(586)	(22,531)
Equity in earnings from Real Estate and Other Affiliates	$ (3,200)								(56,818)	(3,721)	(23,336)
Gain on sale of 80 South Street Assemblage									(140,549)
REP segment EBT									458,518	202,300	255,838
Operating Segments
Segments reporting
Total revenues									1,035,005	797,088	634,565
REP segment EBT									458,518	202,300	255,838
Operating Segments | Master Planned Communities
Segments reporting
Land sales									215,318	187,399	325,099
Builder price participation									21,386	26,846	20,908
Minimum rents									384	842	818
Other land revenues									16,192	14,778	16,470
Other rental and property revenues									24
Total revenues									253,304	229,865	363,295
Cost of sales - land									95,727	88,065	119,672
Land sales operations									42,371	44,907	41,794
Provision for (recovery of) doubtful accounts											(11)
Depreciation and amortization									311	640	397
Other income, net									(59)	(60)	(118)
Interest expense									(21,026)	(18,053)	(19,620)
Equity in earnings from Real Estate and Other Affiliates									(43,501)
Total expenses									73,823	115,499	142,114
REP segment EBT									179,481	114,366	221,181
Operating Segments | Operating Assets
Segments reporting
Minimum rents									172,437	149,064	95,807
Other rental and property revenues									16,170	25,453	24,429
Total revenues									295,165	259,306	186,290
Tenant recoveries									44,306	39,415	28,133
Hospitality revenues									62,252	45,374	37,921
Other property operating costs									60,541	68,078	62,752
Rental property real estate taxes									24,439	21,856	14,860
Rental property maintenance costs									12,033	10,236	8,592
Hospitality operating costs									49,359	34,839	31,829
Provision for (recovery of) doubtful accounts									5,601	3,998	1,399
Demolition costs									1,123	2,675	6,712
Provision for impairment									35,734
Development-related marketing costs									7,110	9,747	9,770
Depreciation and amortization									86,313	89,075	49,272
Other income, net									(4,601)	(524)
Interest income									(19)	(37)	(151)
Interest expense									39,466	31,148	17,081
Equity in earnings from Real Estate and Other Affiliates									(2,802)	(1,883)	(2,025)
Total expenses									314,297	269,208	200,091
REP segment EBT									(19,132)	(9,902)	(13,801)
Operating Segments | Strategic Developments
Segments reporting
Minimum rents									447	899	609
Other land revenues									40	25	33
Other rental and property revenues									391	1,582	553
Total revenues									486,536	307,917	84,980
Tenant recoveries									24	127	220
Condominium rights and unit sales									485,634	305,284	83,565
Condominium rights and unit cost of sales									319,325	191,606	49,995
Other property operating costs									5,437	4,673	4,282
Rental property real estate taxes									2,408	2,282	2,547
Rental property maintenance costs									359	476	543
Provision for (recovery of) doubtful accounts									63	32	16
Demolition costs									1,089	622	22
Development-related marketing costs									15,074	15,719	13,013
Depreciation and amortization									2,744	3,240	1,706
Other income, net									(611)	104	(2,373)
Interest income									(500)	(202)
Interest expense									(5,957)	(6,633)	(11,918)
Equity in earnings from Real Estate and Other Affiliates									(10,515)	(1,838)	(21,311)
Gain on sale of 80 South Street Assemblage									(140,549)
Total expenses									188,367	210,081	36,522
REP segment EBT									$ 298,169	$ 97,836	$ 48,458