Revenues (Schedule of Disaggregation of Revenue) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Disaggregation of Revenue [Line Items]
Rental revenue	$ 88,476	$ 78,706	$ 174,375	$ 171,450
Total revenues	212,457	156,173	403,037	331,348
Recognized at a point in time:
Disaggregation of Revenue [Line Items]
Revenues from contracts with customers	82,592	66,020	164,030	113,554
Operating Assets revenues
Disaggregation of Revenue [Line Items]
Total revenues	113,422	84,277	209,861	198,534
Master Planned Communities revenues
Disaggregation of Revenue [Line Items]
Total revenues	74,578	68,913	122,865	119,359
Seaport revenues
Disaggregation of Revenue [Line Items]
Total revenues	10,898	2,272	18,351	11,966
Strategic Developments revenues
Disaggregation of Revenue [Line Items]
Total revenues	13,466	624	51,766	1,384
Corporate revenues
Disaggregation of Revenue [Line Items]
Total revenues	93	87	194	105
Condominium rights and unit sales
Disaggregation of Revenue [Line Items]
Revenues from contracts with customers	12,861	0	50,028	43
Condominium rights and unit sales | Recognized at a point in time:
Disaggregation of Revenue [Line Items]
Revenues from contracts with customers	12,861	0	50,028	43
Master Planned Communities land sales
Disaggregation of Revenue [Line Items]
Revenues from contracts with customers	58,342	57,073	95,819	96,805
Master Planned Communities land sales | Recognized at a point in time:
Disaggregation of Revenue [Line Items]
Revenues from contracts with customers	58,342	57,073	95,819	96,805
Builder price participation
Disaggregation of Revenue [Line Items]
Revenues from contracts with customers	11,389	8,947	18,183	16,706
Builder price participation | Recognized at a point in time:
Disaggregation of Revenue [Line Items]
Revenues from contracts with customers	11,389	8,947	18,183	16,706
Other land, rental and property revenues
Disaggregation of Revenue [Line Items]
Revenues from contracts with customers	41,389	11,447	64,632	46,344
Other land, rental and property revenues | Recognized at a point in time or over time:
Disaggregation of Revenue [Line Items]
Revenues from contracts with customers	$ 41,389	$ 11,447	$ 64,632	$ 46,344