SEGMENTS (Summary of Segment Operating Results) (Details) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017 USD ($)	Sep. 30, 2016 USD ($)	Sep. 30, 2017 USD ($) segment	Sep. 30, 2016 USD ($)	Mar. 01, 2017	Jul. 20, 2016
Segments reporting
Number of reportable segments | segment			3
Land sales	$ 54,906	$ 44,128	$ 177,531	$ 147,168
Builder price participation	5,472	4,483	14,613	15,631
Minimum rents	44,654	44,910	136,053	128,255
Other land revenues	4,561	4,053	19,606	12,225
Other rental and property revenues	5,929	3,538	17,309	11,335
Total revenues	258,736	242,264	799,137	756,461
Tenant recoveries	11,586	11,657	34,627	33,108
Condominium rights and unit sales	113,852	115,407	342,208	362,613
Hospitality revenues	17,776	14,088	57,190	46,126
Cost of sales - land	29,043	21,432	88,288	66,128
Other property operating costs	21,354	16,535	60,153	47,513
Rental property real estate taxes	7,678	7,033	21,765	21,110
Rental property maintenance costs	3,380	3,332	10,016	9,217
Hospitality operating costs	13,525	12,662	41,534	37,379
Provision for doubtful accounts	448	1,940	1,728	4,629
Demolition costs	175	256	303	1,218
Provision for impairment				35,734
Development-related marketing costs	5,866	4,716	14,787	15,586
Depreciation and amortization	35,899	23,322	96,193	71,246
Other income, net	(77)	35,232	(33,202)	(114,673)
Interest income	(1,764)	(196)	(3,171)	(900)
Equity in (earnings) loss from Real Estate and Other Affiliates	(7,467)	(13,493)	(25,821)	(35,700)
Gain on sale of 80 South Street Assemblage	(237)	(70)	(32,452)	(140,549)
Loss on redemption of senior notes due 2021			46,410
Operating Segments
Segments reporting
REP segment EBT	53,552	34,498	240,495	354,521
Operating Segments | Master Planned Communities
Segments reporting
Land sales	54,906	44,128	177,531	147,168
Builder price participation	5,472	4,483	14,613	15,631
Minimum rents		95	(8)	376
Other land revenues	4,551	4,043	19,575	12,195
Other rental and property revenues		13		33
Total revenues	64,929	52,762	211,711	175,403
Cost of sales - land	29,043	21,432	88,288	66,128
Land sales operations	8,180	10,674	24,881	30,454
Provision for doubtful accounts			2
Depreciation and amortization	76	72	247	236
Interest income	8	(5)	(1)	(26)
Interest expense	(6,363)	(5,248)	(17,901)	(15,591)
Equity in (earnings) loss from Real Estate and Other Affiliates	(6,480)	(13,700)	(21,552)	(22,574)
Total expenses	24,464	13,225	73,964	58,627
REP segment EBT	40,465	39,537	137,747	116,776
Operating Segments | Operating Assets
Segments reporting
Minimum rents	44,579	44,736	135,564	127,663
Other rental and property revenues	5,687	3,471	16,487	10,974
Total revenues	79,533	73,947	243,498	217,852
Tenant recoveries	11,491	11,652	34,257	33,089
Hospitality revenues	17,776	14,088	57,190	46,126
Other property operating costs	17,473	15,611	51,041	43,524
Rental property real estate taxes	7,098	6,406	19,975	19,257
Rental property maintenance costs	3,288	3,247	9,601	8,893
Hospitality operating costs	13,525	12,662	41,534	37,379
Provision for doubtful accounts	453	1,940	1,728	4,566
Demolition costs	34		162
Provision for impairment		35,734		35,734
Development-related marketing costs	1,067	457	2,317	902
Depreciation and amortization	33,885	20,732	88,918	64,546
Other income, net	249	(11)	265	(3,126)
Interest income	3	(3)		(19)
Interest expense	15,937	12,905	46,004	36,987
Equity in (earnings) loss from Real Estate and Other Affiliates	(317)	210	(3,739)	(2,616)
Total expenses	92,695	109,890	257,806	246,027
REP segment EBT	(13,162)	(35,943)	(14,308)	(28,175)
Operating Segments | Strategic Developments
Segments reporting
Minimum rents	75	79	497	216
Other land revenues	10	10	31	30
Other rental and property revenues	242	54	822	328
Total revenues	114,274	115,555	343,928	363,206
Tenant recoveries	95	5	370	19
Condominium rights and unit sales	113,852	115,407	342,208	362,613
Condominium rights and unit cost of sales	86,531	83,218	253,209	237,759
Other property operating costs	3,881	924	9,112	3,989
Rental property real estate taxes	580	627	1,790	1,853
Rental property maintenance costs	92	85	415	324
Provision for doubtful accounts	(5)		(2)	63
Demolition costs	141	256	141	1,218
Development-related marketing costs	4,799	4,259	12,470	14,684
Depreciation and amortization	18	659	1,177	1,978
Other income, net	(122)	(298)	(137)	(542)
Interest income	(30)	(140)	(124)	(271)
Interest expense	(6,953)	(4,866)	(18,197)	(12,710)
Equity in (earnings) loss from Real Estate and Other Affiliates	(670)	(3)	(530)	(10,510)
Gain on sale of 80 South Street Assemblage	(237)	(70)	(32,452)	(140,549)
Total expenses	88,025	84,651	226,872	97,286
REP segment EBT	$ 26,249	$ 30,904	$ 117,056	$ 265,920
Millennium Six Pines Apartments
Segments reporting
Voting interest acquired (as a percent)						18.57%
Las Vegas 51s LLC
Segments reporting
Voting interest acquired (as a percent)					50.00%