Segment Reporting (Summary of Net Operating Income (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Statement [Line Items]
Straight line rent adjustments, net			$ 21,808	$ 14,497
Equity in earnings of unconsolidated joint ventures	$ 5,565	$ 10,590	9,380	26,858
Interest expense	(18,734)	(21,072)	(38,733)	(43,579)
Gain on sale of properties	24,832	95,183	235,579	116,543
Impairment charges	(1,563)	0	(1,563)	0
Interest and other income, net	939	1,673	1,764	2,136
General and administrative expenses	(27,496)	(15,879)	(51,409)	(40,096)
Gain on land sales	2,025	9,900	3,117	11,138
Other operating expenses	(531)	(338)	(1,310)	(1,483)
Loss on extinguishment of debt	0	(3,938)	(21,948)	(4,008)
Gain on involuntary conversion	0	3,222	0	3,222
Non-incremental costs related to successful leases	(3,502)	(4,027)	(9,014)	(6,985)
Income before income taxes	104,181	181,328	361,988	266,716
Depreciation, Depletion and Amortization, Nonproduction	(93,944)	(91,729)	(187,945)	(185,302)
Operating Segments [Member]
Statement [Line Items]
Property Level Net Operating Income – Cash Basis	200,196	172,606	392,498	336,512
Property Level Net Income, Cash Basis, Continuing Operations	200,424	185,580	393,865	363,588
Operating Segments [Member] | Industrial Operations
Statement [Line Items]
Property Level Net Operating Income – Cash Basis	196,611	171,376	385,760	334,009
Operating Segments [Member] | All Other Segments [Member]
Statement [Line Items]
Property Level Net Operating Income – Cash Basis	3,585	1,230	6,738	2,503
Operating Segments [Member] | Service Operations [Member]
Statement [Line Items]
Earnings from Service Operations	1,413	3,655	2,893	5,305
Segment Reconciling Items [Member]
Statement [Line Items]
PNOI from sold properties	228	12,974	1,367	27,076
Straight line rent adjustments, net	11,553	6,476	21,808	14,497
Revenues Related to Lease Buyouts	377	0	547	310
Amortization of lease concessions and above and below market rents	3,195	2,609	5,783	5,441
Intercompany rents and other adjusting items	(290)	(698)	(952)	(1,116)
Equity in earnings of unconsolidated joint ventures	5,565	10,590	9,380	26,858
Interest expense	(18,734)	(21,072)	(38,733)	(43,579)
Gain on sale of properties	24,832	95,183	235,579	116,543
Impairment charges	(1,563)	0	(1,563)	0
Interest and other income, net	939	1,673	1,764	2,136
General and administrative expenses	(27,496)	(15,879)	(51,409)	(40,096)
Gain on land sales	2,025	9,900	3,117	11,138
Other operating expenses	(531)	(338)	(1,310)	(1,483)
Loss on extinguishment of debt	0	(3,938)	(21,948)	(4,008)
Gain on involuntary conversion	0	3,222	0	3,222
Non-incremental costs related to successful leases	(3,502)	(4,027)	(9,014)	(6,985)
Depreciation, Depletion and Amortization, Nonproduction	(93,944)	(91,729)	(187,945)	(185,302)
Other Non-segment Income	$ (82)	$ 121	$ 126	$ 247