OTHER ASSETS AND LIABILITIES (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2019	Dec. 31, 2018
Prepaid Expenses and Other Assets
Condominium inventory	$ 69,110	$ 198,352
Straight-line rent	51,985	50,493
Intangibles	33,785	33,955
Security and escrow deposits	20,129	17,670
Prepaid expenses	15,202	16,981
Equipment, net of accumulated depreciation of $8.7 million and $8.3 million, respectively	15,125	15,543
Other	10,950	20,364
Tenant incentives and other receivables	8,625	8,745
TIF receivable	3,896	2,470
Federal income tax receivable	200	2,000
Interest rate swap derivative assets	0	346
Prepaid expenses and other assets, net	253,644	411,636
Accumulated depreciation on other equipment	8,700	8,300
Decrease in prepaid expenses and other assets	158,000
Decrease in condominium inventory	129,200
Accounts Payable and Accrued Liabilities [Abstract]
Construction payables	298,235	258,749
Condominium deposit liabilities	147,861	263,636
Deferred Revenue and Credits	54,082	42,734
Accounts payable and accrued expenses	26,512	38,748
Interest rate swap derivative liabilities	24,160	16,517
Tenant and other deposits	21,805	20,893
Accrued payroll and other employee liabilities	17,109	42,591
Other	16,150	29,283
Accrued real estate taxes	12,542	26,171
Accrued interest	10,515	23,080
Straight-line ground rent liability	0	16,870
Accounts payable and accrued expenses	628,971	779,272
Decrease in accounts payable and accrued expenses	150,300
Decrease in condominium deposits liability	115,800
Decrease in accrued payroll and other employee liabilities	25,500
Decrease in straight-line ground rent liability	16,900
In-place leases
Prepaid Expenses and Other Assets
Net carrying amount	5,677	6,539
Below-market ground leases
Prepaid Expenses and Other Assets
Special Improvement District receivables	18,054	18,838
Net carrying amount	0	18,296
Above-market tenant leases
Prepaid Expenses and Other Assets
Net carrying amount	906	$ 1,044
Decrease in below-market ground leases	$ 18,300