Other Assets and Liabilities (Prepaid Expenses and Other Assets) (Details) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2021	Dec. 31, 2020
Other Assets and Liabilities [Line Items]
Special Improvement District receivable	$ 49,864	$ 54,770
Special Improvement District receivable, Change	(4,906)
Intangibles	31,390	32,595
Intangibles, Change	(1,205)
Prepaid expenses	20,909	17,455
Prepaid expenses, Change	3,454
Security, escrow and other deposits	19,266	48,576
Security, escrow, and other deposits, Change	(29,310)
Other	19,086	12,096
Other, Change	6,990
Condominium inventory	11,123	55,883
Condominium inventory, Change	(44,760)
Tenant incentives and other receivables	7,420	9,612
Tenant incentives and other receivables, Change	(2,192)
Food and beverage and lifestyle inventory	1,457	1,060
Food and beverage and lifestyle inventory, Change	397
TIF receivable	937	893
TIF receivable, Change	44
Prepaid expenses and other assets, net	208,063	282,101
Prepaid expenses and other assets, net, Change	(74,038)
In-place leases
Other Assets and Liabilities [Line Items]
Leases	46,611	$ 49,161
Leases, Change	$ (2,550)