Stock-based Compensation (Stock-based Compensation Expense) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation expense	$ 43,201	$ 29,249	$ 38,329
LTIP Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation expense	22,179	21,086	27,698
Performance AO LTIP Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation expense	11,426	94	219
LTPP Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation expense	7,189	5,145	0
OPP Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation expense	1,992	1,906	8,629
Vornado stock options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation expense	162	296	456
Vornado restricted stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation expense	159	292	450
AO LTIP Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation expense	$ 94	$ 430	$ 877