Other Assets and Liabilities (Prepaid Expenses and Other Assets) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Dec. 31, 2020
Other Assets and Liabilities [Line Items]
Special Improvement District receivable	$ 51,952	$ 54,770
Special Improvement District receivable, Change	(2,818)
Intangibles	32,209	32,595
Intangibles, Change	(386)
Condominium inventory	23,616	55,883
Condominium inventory, Change	(32,267)
Security, escrow and other deposits	18,881	48,576
Security, escrow, and other deposits, Change	(29,695)
Prepaid expenses	16,208	17,455
Prepaid expenses, Change	(1,247)
Other	14,527	11,781
Other, Change	2,746
Tenant incentives and other receivables	7,680	9,612
Tenant incentives and other receivables, Change	(1,932)
TIF receivable	1,103	893
TIF receivable, Change	210
Food and beverage and lifestyle inventory	1,040	1,060
Food and beverage and lifestyle inventory, Change	(20)
Interest rate swap derivative assets	204	0
Interest rate swap derivative assets, Change	204
Prepaid expenses and other assets, net	215,557	282,101
Prepaid expenses and other assets, net, Change	(66,544)
In-place leases
Other Assets and Liabilities [Line Items]
Leases	47,861	49,161
Leases, Change	(1,300)
Above-market tenant leases
Other Assets and Liabilities [Line Items]
Leases	276	$ 315
Leases, Change	$ (39)