Schedule III - Real Estate and Accumulated Depreciation - Schedule of Properties (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	$ 535,241
Initial Cost to Company
Land and Improvements	788,080
Buildings and Improvements	5,303,404
Costs Capitalized Subsequent to Acquisition
Land and Improvements less Cost of Sales, Transfers and Other	58,716
Building and Improvements less Cost of Sales, Transfers and Other	1,937,647
Gross Amount at Which Carried  at Close of Period
Land and Improvements less Cost of Sales, Transfers and Other	846,795
Building and Improvements less Cost of Sales, Transfers and Other	7,241,051
Total	8,087,846	$ 7,714,382	$ 7,385,230
Accumulated Depreciation	1,079,662	$ 874,988	$ 811,196	$ 621,617
OPERATING PROPERTIES
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	535,241
Initial Cost to Company
Land and Improvements	628,064
Buildings and Improvements	5,303,404
Costs Capitalized Subsequent to Acquisition
Land and Improvements less Cost of Sales, Transfers and Other	43,661
Building and Improvements less Cost of Sales, Transfers and Other	1,842,887
Gross Amount at Which Carried  at Close of Period
Land and Improvements less Cost of Sales, Transfers and Other	671,725
Building and Improvements less Cost of Sales, Transfers and Other	7,146,291
Total	7,818,016
Accumulated Depreciation	1,079,662
OPERATING PROPERTIES | Miscellaneous Investments
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0
Initial Cost to Company
Land and Improvements	15,318
Buildings and Improvements	69,780
Costs Capitalized Subsequent to Acquisition
Land and Improvements less Cost of Sales, Transfers and Other	33
Building and Improvements less Cost of Sales, Transfers and Other	2,121
Gross Amount at Which Carried  at Close of Period
Land and Improvements less Cost of Sales, Transfers and Other	15,351
Building and Improvements less Cost of Sales, Transfers and Other	71,901
Total	87,252
Accumulated Depreciation	4,797
OPERATING PROPERTIES | Austin, TX | The Domain
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	74,521
Initial Cost to Company
Land and Improvements	65,236
Buildings and Improvements	755,143
Costs Capitalized Subsequent to Acquisition
Land and Improvements less Cost of Sales, Transfers and Other	6,006
Building and Improvements less Cost of Sales, Transfers and Other	288,737
Gross Amount at Which Carried  at Close of Period
Land and Improvements less Cost of Sales, Transfers and Other	71,242
Building and Improvements less Cost of Sales, Transfers and Other	1,043,880
Total	1,115,122
Accumulated Depreciation	$ 103,911
OPERATING PROPERTIES | Austin, TX | The Domain | Minimum
Gross Amount at Which Carried  at Close of Period
Life on Which Depreciation in 2021 Statement of Operations is Computed	5 years
OPERATING PROPERTIES | Austin, TX | The Domain | Maximum
Gross Amount at Which Carried  at Close of Period
Life on Which Depreciation in 2021 Statement of Operations is Computed	40 years
OPERATING PROPERTIES | Austin, TX | 300 Colorado
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	$ 0
Initial Cost to Company
Land and Improvements	18,354
Buildings and Improvements	278,905
Costs Capitalized Subsequent to Acquisition
Land and Improvements less Cost of Sales, Transfers and Other	(18)
Building and Improvements less Cost of Sales, Transfers and Other	7,413
Gross Amount at Which Carried  at Close of Period
Land and Improvements less Cost of Sales, Transfers and Other	18,336
Building and Improvements less Cost of Sales, Transfers and Other	286,318
Total	304,654
Accumulated Depreciation	$ 8,040
OPERATING PROPERTIES | Austin, TX | 300 Colorado | Minimum
Gross Amount at Which Carried  at Close of Period
Life on Which Depreciation in 2021 Statement of Operations is Computed	5 years
OPERATING PROPERTIES | Austin, TX | 300 Colorado | Maximum
Gross Amount at Which Carried  at Close of Period
Life on Which Depreciation in 2021 Statement of Operations is Computed	40 years
OPERATING PROPERTIES | Austin, TX | The Terrace
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	$ 0
Initial Cost to Company
Land and Improvements	27,360
Buildings and Improvements	247,226
Costs Capitalized Subsequent to Acquisition
Land and Improvements less Cost of Sales, Transfers and Other	0
Building and Improvements less Cost of Sales, Transfers and Other	22,201
Gross Amount at Which Carried  at Close of Period
Land and Improvements less Cost of Sales, Transfers and Other	27,360
Building and Improvements less Cost of Sales, Transfers and Other	269,427
Total	296,787
Accumulated Depreciation	$ 29,755
OPERATING PROPERTIES | Austin, TX | The Terrace | Minimum
Gross Amount at Which Carried  at Close of Period
Life on Which Depreciation in 2021 Statement of Operations is Computed	5 years
OPERATING PROPERTIES | Austin, TX | The Terrace | Maximum
Gross Amount at Which Carried  at Close of Period
Life on Which Depreciation in 2021 Statement of Operations is Computed	40 years
OPERATING PROPERTIES | Austin, TX | One Eleven Congress
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	$ 0
Initial Cost to Company
Land and Improvements	33,841
Buildings and Improvements	201,707
Costs Capitalized Subsequent to Acquisition
Land and Improvements less Cost of Sales, Transfers and Other	0
Building and Improvements less Cost of Sales, Transfers and Other	51,421
Gross Amount at Which Carried  at Close of Period
Land and Improvements less Cost of Sales, Transfers and Other	33,841
Building and Improvements less Cost of Sales, Transfers and Other	253,128
Total	286,969
Accumulated Depreciation	$ 44,830
OPERATING PROPERTIES | Austin, TX | One Eleven Congress | Minimum
Gross Amount at Which Carried  at Close of Period
Life on Which Depreciation in 2021 Statement of Operations is Computed	5 years
OPERATING PROPERTIES | Austin, TX | One Eleven Congress | Maximum
Gross Amount at Which Carried  at Close of Period
Life on Which Depreciation in 2021 Statement of Operations is Computed	40 years
OPERATING PROPERTIES | Austin, TX | San Jacinto Center
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	$ 0
Initial Cost to Company
Land and Improvements	34,068
Buildings and Improvements	176,535
Costs Capitalized Subsequent to Acquisition
Land and Improvements less Cost of Sales, Transfers and Other	(579)
Building and Improvements less Cost of Sales, Transfers and Other	26,742
Gross Amount at Which Carried  at Close of Period
Land and Improvements less Cost of Sales, Transfers and Other	33,489
Building and Improvements less Cost of Sales, Transfers and Other	203,277
Total	236,766
Accumulated Depreciation	$ 34,726
OPERATING PROPERTIES | Austin, TX | San Jacinto Center | Minimum
Gross Amount at Which Carried  at Close of Period
Life on Which Depreciation in 2021 Statement of Operations is Computed	5 years
OPERATING PROPERTIES | Austin, TX | San Jacinto Center | Maximum
Gross Amount at Which Carried  at Close of Period
Life on Which Depreciation in 2021 Statement of Operations is Computed	40 years
OPERATING PROPERTIES | Austin, TX | Colorado Tower
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	$ 109,552
Initial Cost to Company
Land and Improvements	1,600
Buildings and Improvements	0
Costs Capitalized Subsequent to Acquisition
Land and Improvements less Cost of Sales, Transfers and Other	20,560
Building and Improvements less Cost of Sales, Transfers and Other	123,938
Gross Amount at Which Carried  at Close of Period
Land and Improvements less Cost of Sales, Transfers and Other	22,160
Building and Improvements less Cost of Sales, Transfers and Other	123,938
Total	146,098
Accumulated Depreciation	$ 41,388
OPERATING PROPERTIES | Austin, TX | Colorado Tower | Minimum
Gross Amount at Which Carried  at Close of Period
Life on Which Depreciation in 2021 Statement of Operations is Computed	5 years
OPERATING PROPERTIES | Austin, TX | Colorado Tower | Maximum
Gross Amount at Which Carried  at Close of Period
Life on Which Depreciation in 2021 Statement of Operations is Computed	30 years
OPERATING PROPERTIES | Austin, TX | Domain Point
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	$ 0
Initial Cost to Company
Land and Improvements	17,349
Buildings and Improvements	71,599
Costs Capitalized Subsequent to Acquisition
Land and Improvements less Cost of Sales, Transfers and Other	0
Building and Improvements less Cost of Sales, Transfers and Other	11,961
Gross Amount at Which Carried  at Close of Period
Land and Improvements less Cost of Sales, Transfers and Other	17,349
Building and Improvements less Cost of Sales, Transfers and Other	83,560
Total	100,909
Accumulated Depreciation	$ 10,826
OPERATING PROPERTIES | Austin, TX | Domain Point | Minimum
Gross Amount at Which Carried  at Close of Period
Life on Which Depreciation in 2021 Statement of Operations is Computed	5 years
OPERATING PROPERTIES | Austin, TX | Domain Point | Maximum
Gross Amount at Which Carried  at Close of Period
Life on Which Depreciation in 2021 Statement of Operations is Computed	40 years
OPERATING PROPERTIES | Austin, TX | Research Park V
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	$ 0
Initial Cost to Company
Land and Improvements	4,373
Buildings and Improvements	0
Costs Capitalized Subsequent to Acquisition
Land and Improvements less Cost of Sales, Transfers and Other	801
Building and Improvements less Cost of Sales, Transfers and Other	45,081
Gross Amount at Which Carried  at Close of Period
Land and Improvements less Cost of Sales, Transfers and Other	5,174
Building and Improvements less Cost of Sales, Transfers and Other	45,081
Total	50,255
Accumulated Depreciation	$ 15,462
OPERATING PROPERTIES | Austin, TX | Research Park V | Minimum
Gross Amount at Which Carried  at Close of Period
Life on Which Depreciation in 2021 Statement of Operations is Computed	5 years
OPERATING PROPERTIES | Austin, TX | Research Park V | Maximum
Gross Amount at Which Carried  at Close of Period
Life on Which Depreciation in 2021 Statement of Operations is Computed	30 years
OPERATING PROPERTIES | Atlanta, GA | Terminus
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	$ 221,000
Initial Cost to Company
Land and Improvements	49,050
Buildings and Improvements	410,826
Costs Capitalized Subsequent to Acquisition
Land and Improvements less Cost of Sales, Transfers and Other	0
Building and Improvements less Cost of Sales, Transfers and Other	45,715
Gross Amount at Which Carried  at Close of Period
Land and Improvements less Cost of Sales, Transfers and Other	49,050
Building and Improvements less Cost of Sales, Transfers and Other	456,541
Total	505,591
Accumulated Depreciation	$ 49,845
OPERATING PROPERTIES | Atlanta, GA | Terminus | Minimum
Gross Amount at Which Carried  at Close of Period
Life on Which Depreciation in 2021 Statement of Operations is Computed	5 years
OPERATING PROPERTIES | Atlanta, GA | Terminus | Maximum
Gross Amount at Which Carried  at Close of Period
Life on Which Depreciation in 2021 Statement of Operations is Computed	40 years
OPERATING PROPERTIES | Atlanta, GA | Northpark Town Center
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	$ 0
Initial Cost to Company
Land and Improvements	22,350
Buildings and Improvements	295,825
Costs Capitalized Subsequent to Acquisition
Land and Improvements less Cost of Sales, Transfers and Other	0
Building and Improvements less Cost of Sales, Transfers and Other	66,161
Gross Amount at Which Carried  at Close of Period
Land and Improvements less Cost of Sales, Transfers and Other	22,350
Building and Improvements less Cost of Sales, Transfers and Other	361,986
Total	384,336
Accumulated Depreciation	$ 93,350
OPERATING PROPERTIES | Atlanta, GA | Northpark Town Center | Minimum
Gross Amount at Which Carried  at Close of Period
Life on Which Depreciation in 2021 Statement of Operations is Computed	5 years
OPERATING PROPERTIES | Atlanta, GA | Northpark Town Center | Maximum
Gross Amount at Which Carried  at Close of Period
Life on Which Depreciation in 2021 Statement of Operations is Computed	39 years
OPERATING PROPERTIES | Atlanta, GA | Spring & 8th
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	$ 0
Initial Cost to Company
Land and Improvements	28,131
Buildings and Improvements	0
Costs Capitalized Subsequent to Acquisition
Land and Improvements less Cost of Sales, Transfers and Other	426
Building and Improvements less Cost of Sales, Transfers and Other	301,770
Gross Amount at Which Carried  at Close of Period
Land and Improvements less Cost of Sales, Transfers and Other	28,557
Building and Improvements less Cost of Sales, Transfers and Other	301,770
Total	330,327
Accumulated Depreciation	$ 51,746
OPERATING PROPERTIES | Atlanta, GA | Spring & 8th | Minimum
Gross Amount at Which Carried  at Close of Period
Life on Which Depreciation in 2021 Statement of Operations is Computed	5 years
OPERATING PROPERTIES | Atlanta, GA | Spring & 8th | Maximum
Gross Amount at Which Carried  at Close of Period
Life on Which Depreciation in 2021 Statement of Operations is Computed	40 years
OPERATING PROPERTIES | Atlanta, GA | Buckhead Plaza
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	$ 0
Initial Cost to Company
Land and Improvements	35,064
Buildings and Improvements	234,111
Costs Capitalized Subsequent to Acquisition
Land and Improvements less Cost of Sales, Transfers and Other	0
Building and Improvements less Cost of Sales, Transfers and Other	54,902
Gross Amount at Which Carried  at Close of Period
Land and Improvements less Cost of Sales, Transfers and Other	35,064
Building and Improvements less Cost of Sales, Transfers and Other	289,013
Total	324,077
Accumulated Depreciation	$ 46,738
OPERATING PROPERTIES | Atlanta, GA | Buckhead Plaza | Minimum
Gross Amount at Which Carried  at Close of Period
Life on Which Depreciation in 2021 Statement of Operations is Computed	5 years
OPERATING PROPERTIES | Atlanta, GA | Buckhead Plaza | Maximum
Gross Amount at Which Carried  at Close of Period
Life on Which Depreciation in 2021 Statement of Operations is Computed	40 years
OPERATING PROPERTIES | Atlanta, GA | 725 Ponce
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	$ 0
Initial Cost to Company
Land and Improvements	20,720
Buildings and Improvements	272,226
Costs Capitalized Subsequent to Acquisition
Land and Improvements less Cost of Sales, Transfers and Other	0
Building and Improvements less Cost of Sales, Transfers and Other	14,096
Gross Amount at Which Carried  at Close of Period
Land and Improvements less Cost of Sales, Transfers and Other	20,720
Building and Improvements less Cost of Sales, Transfers and Other	286,322
Total	307,042
Accumulated Depreciation	$ 12,139
OPERATING PROPERTIES | Atlanta, GA | 725 Ponce | Minimum
Gross Amount at Which Carried  at Close of Period
Life on Which Depreciation in 2021 Statement of Operations is Computed	5 years
OPERATING PROPERTIES | Atlanta, GA | 725 Ponce | Maximum
Gross Amount at Which Carried  at Close of Period
Life on Which Depreciation in 2021 Statement of Operations is Computed	40 years
OPERATING PROPERTIES | Atlanta, GA | 3344 Peachtree
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	$ 0
Initial Cost to Company
Land and Improvements	16,110
Buildings and Improvements	176,153
Costs Capitalized Subsequent to Acquisition
Land and Improvements less Cost of Sales, Transfers and Other	0
Building and Improvements less Cost of Sales, Transfers and Other	40,615
Gross Amount at Which Carried  at Close of Period
Land and Improvements less Cost of Sales, Transfers and Other	16,110
Building and Improvements less Cost of Sales, Transfers and Other	216,768
Total	232,878
Accumulated Depreciation	$ 41,789
OPERATING PROPERTIES | Atlanta, GA | 3344 Peachtree | Minimum
Gross Amount at Which Carried  at Close of Period
Life on Which Depreciation in 2021 Statement of Operations is Computed	5 years
OPERATING PROPERTIES | Atlanta, GA | 3344 Peachtree | Maximum
Gross Amount at Which Carried  at Close of Period
Life on Which Depreciation in 2021 Statement of Operations is Computed	40 years
OPERATING PROPERTIES | Atlanta, GA | Avalon
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	$ 0
Initial Cost to Company
Land and Improvements	9,952
Buildings and Improvements	0
Costs Capitalized Subsequent to Acquisition
Land and Improvements less Cost of Sales, Transfers and Other	73
Building and Improvements less Cost of Sales, Transfers and Other	180,312
Gross Amount at Which Carried  at Close of Period
Land and Improvements less Cost of Sales, Transfers and Other	10,025
Building and Improvements less Cost of Sales, Transfers and Other	180,312
Total	190,337
Accumulated Depreciation	$ 29,015
OPERATING PROPERTIES | Atlanta, GA | Avalon | Minimum
Gross Amount at Which Carried  at Close of Period
Life on Which Depreciation in 2021 Statement of Operations is Computed	5 years
OPERATING PROPERTIES | Atlanta, GA | Avalon | Maximum
Gross Amount at Which Carried  at Close of Period
Life on Which Depreciation in 2021 Statement of Operations is Computed	40 years
OPERATING PROPERTIES | Atlanta, GA | Promenade Tower
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	$ 0
Initial Cost to Company
Land and Improvements	13,439
Buildings and Improvements	102,790
Costs Capitalized Subsequent to Acquisition
Land and Improvements less Cost of Sales, Transfers and Other	0
Building and Improvements less Cost of Sales, Transfers and Other	62,902
Gross Amount at Which Carried  at Close of Period
Land and Improvements less Cost of Sales, Transfers and Other	13,439
Building and Improvements less Cost of Sales, Transfers and Other	165,692
Total	179,131
Accumulated Depreciation	$ 57,571
OPERATING PROPERTIES | Atlanta, GA | Promenade Tower | Minimum
Gross Amount at Which Carried  at Close of Period
Life on Which Depreciation in 2021 Statement of Operations is Computed	5 years
OPERATING PROPERTIES | Atlanta, GA | Promenade Tower | Maximum
Gross Amount at Which Carried  at Close of Period
Life on Which Depreciation in 2021 Statement of Operations is Computed	34 years
OPERATING PROPERTIES | Atlanta, GA | 3350 Peachtree
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	$ 0
Initial Cost to Company
Land and Improvements	16,836
Buildings and Improvements	108,177
Costs Capitalized Subsequent to Acquisition
Land and Improvements less Cost of Sales, Transfers and Other	0
Building and Improvements less Cost of Sales, Transfers and Other	44,203
Gross Amount at Which Carried  at Close of Period
Land and Improvements less Cost of Sales, Transfers and Other	16,836
Building and Improvements less Cost of Sales, Transfers and Other	152,380
Total	169,216
Accumulated Depreciation	$ 19,833
OPERATING PROPERTIES | Atlanta, GA | 3350 Peachtree | Minimum
Gross Amount at Which Carried  at Close of Period
Life on Which Depreciation in 2021 Statement of Operations is Computed	5 years
OPERATING PROPERTIES | Atlanta, GA | 3350 Peachtree | Maximum
Gross Amount at Which Carried  at Close of Period
Life on Which Depreciation in 2021 Statement of Operations is Computed	40 years
OPERATING PROPERTIES | Atlanta, GA | Promenade Central
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	$ 0
Initial Cost to Company
Land and Improvements	19,495
Buildings and Improvements	62,836
Costs Capitalized Subsequent to Acquisition
Land and Improvements less Cost of Sales, Transfers and Other	0
Building and Improvements less Cost of Sales, Transfers and Other	51,464
Gross Amount at Which Carried  at Close of Period
Land and Improvements less Cost of Sales, Transfers and Other	19,495
Building and Improvements less Cost of Sales, Transfers and Other	114,300
Total	133,795
Accumulated Depreciation	$ 4,880
OPERATING PROPERTIES | Atlanta, GA | Promenade Central | Minimum
Gross Amount at Which Carried  at Close of Period
Life on Which Depreciation in 2021 Statement of Operations is Computed	5 years
OPERATING PROPERTIES | Atlanta, GA | Promenade Central | Maximum
Gross Amount at Which Carried  at Close of Period
Life on Which Depreciation in 2021 Statement of Operations is Computed	40 years
OPERATING PROPERTIES | Atlanta, GA | 3348 Peachtree
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	$ 0
Initial Cost to Company
Land and Improvements	6,707
Buildings and Improvements	69,723
Costs Capitalized Subsequent to Acquisition
Land and Improvements less Cost of Sales, Transfers and Other	0
Building and Improvements less Cost of Sales, Transfers and Other	1,575
Gross Amount at Which Carried  at Close of Period
Land and Improvements less Cost of Sales, Transfers and Other	6,707
Building and Improvements less Cost of Sales, Transfers and Other	71,298
Total	78,005
Accumulated Depreciation	$ 16,135
OPERATING PROPERTIES | Atlanta, GA | 3348 Peachtree | Minimum
Gross Amount at Which Carried  at Close of Period
Life on Which Depreciation in 2021 Statement of Operations is Computed	5 years
OPERATING PROPERTIES | Atlanta, GA | 3348 Peachtree | Maximum
Gross Amount at Which Carried  at Close of Period
Life on Which Depreciation in 2021 Statement of Operations is Computed	40 years
OPERATING PROPERTIES | Atlanta, GA | Meridian Mark Plaza
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	$ 0
Initial Cost to Company
Land and Improvements	2,219
Buildings and Improvements	0
Costs Capitalized Subsequent to Acquisition
Land and Improvements less Cost of Sales, Transfers and Other	0
Building and Improvements less Cost of Sales, Transfers and Other	25,954
Gross Amount at Which Carried  at Close of Period
Land and Improvements less Cost of Sales, Transfers and Other	2,219
Building and Improvements less Cost of Sales, Transfers and Other	25,954
Total	28,173
Accumulated Depreciation	$ 17,922
OPERATING PROPERTIES | Atlanta, GA | Meridian Mark Plaza | Minimum
Gross Amount at Which Carried  at Close of Period
Life on Which Depreciation in 2021 Statement of Operations is Computed	5 years
OPERATING PROPERTIES | Atlanta, GA | Meridian Mark Plaza | Maximum
Gross Amount at Which Carried  at Close of Period
Life on Which Depreciation in 2021 Statement of Operations is Computed	30 years
OPERATING PROPERTIES | Tampa, FL | Corporate Center
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	$ 0
Initial Cost to Company
Land and Improvements	2,468
Buildings and Improvements	272,148
Costs Capitalized Subsequent to Acquisition
Land and Improvements less Cost of Sales, Transfers and Other	16,733
Building and Improvements less Cost of Sales, Transfers and Other	63,554
Gross Amount at Which Carried  at Close of Period
Land and Improvements less Cost of Sales, Transfers and Other	19,201
Building and Improvements less Cost of Sales, Transfers and Other	335,702
Total	354,903
Accumulated Depreciation	$ 71,090
OPERATING PROPERTIES | Tampa, FL | Corporate Center | Minimum
Gross Amount at Which Carried  at Close of Period
Life on Which Depreciation in 2021 Statement of Operations is Computed	5 years
OPERATING PROPERTIES | Tampa, FL | Corporate Center | Maximum
Gross Amount at Which Carried  at Close of Period
Life on Which Depreciation in 2021 Statement of Operations is Computed	40 years
OPERATING PROPERTIES | Tampa, FL | Heights Union
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	$ 0
Initial Cost to Company
Land and Improvements	9,545
Buildings and Improvements	123,944
Costs Capitalized Subsequent to Acquisition
Land and Improvements less Cost of Sales, Transfers and Other	0
Building and Improvements less Cost of Sales, Transfers and Other	19,073
Gross Amount at Which Carried  at Close of Period
Land and Improvements less Cost of Sales, Transfers and Other	9,545
Building and Improvements less Cost of Sales, Transfers and Other	143,017
Total	152,562
Accumulated Depreciation	$ 5,843
OPERATING PROPERTIES | Tampa, FL | Heights Union | Minimum
Gross Amount at Which Carried  at Close of Period
Life on Which Depreciation in 2021 Statement of Operations is Computed	5 years
OPERATING PROPERTIES | Tampa, FL | Heights Union | Maximum
Gross Amount at Which Carried  at Close of Period
Life on Which Depreciation in 2021 Statement of Operations is Computed	40 years
OPERATING PROPERTIES | Tampa, FL | The Pointe
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	$ 0
Initial Cost to Company
Land and Improvements	9,404
Buildings and Improvements	54,694
Costs Capitalized Subsequent to Acquisition
Land and Improvements less Cost of Sales, Transfers and Other	0
Building and Improvements less Cost of Sales, Transfers and Other	8,637
Gross Amount at Which Carried  at Close of Period
Land and Improvements less Cost of Sales, Transfers and Other	9,404
Building and Improvements less Cost of Sales, Transfers and Other	63,331
Total	72,735
Accumulated Depreciation	$ 13,576
OPERATING PROPERTIES | Tampa, FL | The Pointe | Minimum
Gross Amount at Which Carried  at Close of Period
Life on Which Depreciation in 2021 Statement of Operations is Computed	5 years
OPERATING PROPERTIES | Tampa, FL | The Pointe | Maximum
Gross Amount at Which Carried  at Close of Period
Life on Which Depreciation in 2021 Statement of Operations is Computed	40 years
OPERATING PROPERTIES | Tampa, FL | Harborview Plaza
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	$ 0
Initial Cost to Company
Land and Improvements	10,800
Buildings and Improvements	39,136
Costs Capitalized Subsequent to Acquisition
Land and Improvements less Cost of Sales, Transfers and Other	0
Building and Improvements less Cost of Sales, Transfers and Other	10,040
Gross Amount at Which Carried  at Close of Period
Land and Improvements less Cost of Sales, Transfers and Other	10,800
Building and Improvements less Cost of Sales, Transfers and Other	49,176
Total	59,976
Accumulated Depreciation	$ 10,184
OPERATING PROPERTIES | Tampa, FL | Harborview Plaza | Minimum
Gross Amount at Which Carried  at Close of Period
Life on Which Depreciation in 2021 Statement of Operations is Computed	5 years
OPERATING PROPERTIES | Tampa, FL | Harborview Plaza | Maximum
Gross Amount at Which Carried  at Close of Period
Life on Which Depreciation in 2021 Statement of Operations is Computed	40 years
OPERATING PROPERTIES | Phoenix, AZ | Hayden Ferry
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	$ 0
Initial Cost to Company
Land and Improvements	13,102
Buildings and Improvements	262,578
Costs Capitalized Subsequent to Acquisition
Land and Improvements less Cost of Sales, Transfers and Other	(252)
Building and Improvements less Cost of Sales, Transfers and Other	22,298
Gross Amount at Which Carried  at Close of Period
Land and Improvements less Cost of Sales, Transfers and Other	12,850
Building and Improvements less Cost of Sales, Transfers and Other	284,876
Total	297,726
Accumulated Depreciation	$ 60,247
OPERATING PROPERTIES | Phoenix, AZ | Hayden Ferry | Minimum
Gross Amount at Which Carried  at Close of Period
Life on Which Depreciation in 2021 Statement of Operations is Computed	5 years
OPERATING PROPERTIES | Phoenix, AZ | Hayden Ferry | Maximum
Gross Amount at Which Carried  at Close of Period
Life on Which Depreciation in 2021 Statement of Operations is Computed	40 years
OPERATING PROPERTIES | Phoenix, AZ | 100 Mill
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	$ 0
Initial Cost to Company
Land and Improvements	13,156
Buildings and Improvements	0
Costs Capitalized Subsequent to Acquisition
Land and Improvements less Cost of Sales, Transfers and Other	5
Building and Improvements less Cost of Sales, Transfers and Other	168,427
Gross Amount at Which Carried  at Close of Period
Land and Improvements less Cost of Sales, Transfers and Other	13,161
Building and Improvements less Cost of Sales, Transfers and Other	168,427
Total	181,588
Accumulated Depreciation	$ 4,456
OPERATING PROPERTIES | Phoenix, AZ | 100 Mill | Minimum
Gross Amount at Which Carried  at Close of Period
Life on Which Depreciation in 2021 Statement of Operations is Computed	5 years
OPERATING PROPERTIES | Phoenix, AZ | 100 Mill | Maximum
Gross Amount at Which Carried  at Close of Period
Life on Which Depreciation in 2021 Statement of Operations is Computed	40 years
OPERATING PROPERTIES | Phoenix, AZ | Tempe Gateway
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	$ 0
Initial Cost to Company
Land and Improvements	5,893
Buildings and Improvements	95,130
Costs Capitalized Subsequent to Acquisition
Land and Improvements less Cost of Sales, Transfers and Other	0
Building and Improvements less Cost of Sales, Transfers and Other	6,490
Gross Amount at Which Carried  at Close of Period
Land and Improvements less Cost of Sales, Transfers and Other	5,893
Building and Improvements less Cost of Sales, Transfers and Other	101,620
Total	107,513
Accumulated Depreciation	$ 15,959
OPERATING PROPERTIES | Phoenix, AZ | Tempe Gateway | Minimum
Gross Amount at Which Carried  at Close of Period
Life on Which Depreciation in 2021 Statement of Operations is Computed	5 years
OPERATING PROPERTIES | Phoenix, AZ | Tempe Gateway | Maximum
Gross Amount at Which Carried  at Close of Period
Life on Which Depreciation in 2021 Statement of Operations is Computed	40 years
OPERATING PROPERTIES | Phoenix, AZ | 111 West Rio
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	$ 0
Initial Cost to Company
Land and Improvements	6,076
Buildings and Improvements	56,647
Costs Capitalized Subsequent to Acquisition
Land and Improvements less Cost of Sales, Transfers and Other	(127)
Building and Improvements less Cost of Sales, Transfers and Other	18,987
Gross Amount at Which Carried  at Close of Period
Land and Improvements less Cost of Sales, Transfers and Other	5,949
Building and Improvements less Cost of Sales, Transfers and Other	75,634
Total	81,583
Accumulated Depreciation	$ 16,922
OPERATING PROPERTIES | Phoenix, AZ | 111 West Rio | Minimum
Gross Amount at Which Carried  at Close of Period
Life on Which Depreciation in 2021 Statement of Operations is Computed	5 years
OPERATING PROPERTIES | Phoenix, AZ | 111 West Rio | Maximum
Gross Amount at Which Carried  at Close of Period
Life on Which Depreciation in 2021 Statement of Operations is Computed	40 years
OPERATING PROPERTIES | Houston, TX | Briarlake Plaza
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	$ 0
Initial Cost to Company
Land and Improvements	33,486
Buildings and Improvements	196,915
Costs Capitalized Subsequent to Acquisition
Land and Improvements less Cost of Sales, Transfers and Other	0
Building and Improvements less Cost of Sales, Transfers and Other	17,078
Gross Amount at Which Carried  at Close of Period
Land and Improvements less Cost of Sales, Transfers and Other	33,486
Building and Improvements less Cost of Sales, Transfers and Other	213,993
Total	247,479
Accumulated Depreciation	$ 27,131
OPERATING PROPERTIES | Houston, TX | Briarlake Plaza | Minimum
Gross Amount at Which Carried  at Close of Period
Life on Which Depreciation in 2021 Statement of Operations is Computed	5 years
OPERATING PROPERTIES | Houston, TX | Briarlake Plaza | Maximum
Gross Amount at Which Carried  at Close of Period
Life on Which Depreciation in 2021 Statement of Operations is Computed	40 years
OPERATING PROPERTIES | Charlotte, NC | Fifth Third Center
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	$ 130,168
Initial Cost to Company
Land and Improvements	22,591
Buildings and Improvements	180,430
Costs Capitalized Subsequent to Acquisition
Land and Improvements less Cost of Sales, Transfers and Other	0
Building and Improvements less Cost of Sales, Transfers and Other	20,533
Gross Amount at Which Carried  at Close of Period
Land and Improvements less Cost of Sales, Transfers and Other	22,591
Building and Improvements less Cost of Sales, Transfers and Other	200,963
Total	223,554
Accumulated Depreciation	$ 55,453
OPERATING PROPERTIES | Charlotte, NC | Fifth Third Center | Minimum
Gross Amount at Which Carried  at Close of Period
Life on Which Depreciation in 2021 Statement of Operations is Computed	5 years
OPERATING PROPERTIES | Charlotte, NC | Fifth Third Center | Maximum
Gross Amount at Which Carried  at Close of Period
Life on Which Depreciation in 2021 Statement of Operations is Computed	40 years
OPERATING PROPERTIES | Charlotte, NC | The RailYard
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	$ 0
Initial Cost to Company
Land and Improvements	22,831
Buildings and Improvements	178,323
Costs Capitalized Subsequent to Acquisition
Land and Improvements less Cost of Sales, Transfers and Other	0
Building and Improvements less Cost of Sales, Transfers and Other	1,225
Gross Amount at Which Carried  at Close of Period
Land and Improvements less Cost of Sales, Transfers and Other	22,831
Building and Improvements less Cost of Sales, Transfers and Other	179,548
Total	202,379
Accumulated Depreciation	$ 12,572
OPERATING PROPERTIES | Charlotte, NC | The RailYard | Minimum
Gross Amount at Which Carried  at Close of Period
Life on Which Depreciation in 2021 Statement of Operations is Computed	5 years
OPERATING PROPERTIES | Charlotte, NC | The RailYard | Maximum
Gross Amount at Which Carried  at Close of Period
Life on Which Depreciation in 2021 Statement of Operations is Computed	40 years
OPERATING PROPERTIES | Charlotte, NC | 550 South
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	$ 0
Initial Cost to Company
Land and Improvements	51
Buildings and Improvements	115,238
Costs Capitalized Subsequent to Acquisition
Land and Improvements less Cost of Sales, Transfers and Other	0
Building and Improvements less Cost of Sales, Transfers and Other	9,342
Gross Amount at Which Carried  at Close of Period
Land and Improvements less Cost of Sales, Transfers and Other	51
Building and Improvements less Cost of Sales, Transfers and Other	124,580
Total	124,631
Accumulated Depreciation	$ 25,827
OPERATING PROPERTIES | Charlotte, NC | 550 South | Minimum
Gross Amount at Which Carried  at Close of Period
Life on Which Depreciation in 2021 Statement of Operations is Computed	5 years
OPERATING PROPERTIES | Charlotte, NC | 550 South | Maximum
Gross Amount at Which Carried  at Close of Period
Life on Which Depreciation in 2021 Statement of Operations is Computed	40 years
OPERATING PROPERTIES | Dallas, GA | Legacy Union One
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	$ 0
Initial Cost to Company
Land and Improvements	13,049
Buildings and Improvements	128,740
Costs Capitalized Subsequent to Acquisition
Land and Improvements less Cost of Sales, Transfers and Other	0
Building and Improvements less Cost of Sales, Transfers and Other	231
Gross Amount at Which Carried  at Close of Period
Land and Improvements less Cost of Sales, Transfers and Other	13,049
Building and Improvements less Cost of Sales, Transfers and Other	128,971
Total	142,020
Accumulated Depreciation	$ 17,375
OPERATING PROPERTIES | Dallas, GA | Legacy Union One | Minimum
Gross Amount at Which Carried  at Close of Period
Life on Which Depreciation in 2021 Statement of Operations is Computed	5 years
OPERATING PROPERTIES | Dallas, GA | Legacy Union One | Maximum
Gross Amount at Which Carried  at Close of Period
Life on Which Depreciation in 2021 Statement of Operations is Computed	40 years
OPERATING PROPERTIES | Dallas, GA | 5950 Sherry Lane
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	$ 0
Initial Cost to Company
Land and Improvements	8,040
Buildings and Improvements	65,919
Costs Capitalized Subsequent to Acquisition
Land and Improvements less Cost of Sales, Transfers and Other	0
Building and Improvements less Cost of Sales, Transfers and Other	7,688
Gross Amount at Which Carried  at Close of Period
Land and Improvements less Cost of Sales, Transfers and Other	8,040
Building and Improvements less Cost of Sales, Transfers and Other	73,607
Total	81,647
Accumulated Depreciation	$ 8,329
OPERATING PROPERTIES | Dallas, GA | 5950 Sherry Lane | Minimum
Gross Amount at Which Carried  at Close of Period
Life on Which Depreciation in 2021 Statement of Operations is Computed	5 years
OPERATING PROPERTIES | Dallas, GA | 5950 Sherry Lane | Maximum
Gross Amount at Which Carried  at Close of Period
Life on Which Depreciation in 2021 Statement of Operations is Computed	40 years
PROJECTS UNDER DEVELOPMENT
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	$ 0
Initial Cost to Company
Land and Improvements	16,640
Buildings and Improvements	0
Costs Capitalized Subsequent to Acquisition
Land and Improvements less Cost of Sales, Transfers and Other	0
Building and Improvements less Cost of Sales, Transfers and Other	94,760
Gross Amount at Which Carried  at Close of Period
Land and Improvements less Cost of Sales, Transfers and Other	16,640
Building and Improvements less Cost of Sales, Transfers and Other	94,760
Total	111,400
Accumulated Depreciation	0
PROJECTS UNDER DEVELOPMENT | Austin, TX | Domain 9
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0
Initial Cost to Company
Land and Improvements	16,640
Buildings and Improvements	0
Costs Capitalized Subsequent to Acquisition
Land and Improvements less Cost of Sales, Transfers and Other	0
Building and Improvements less Cost of Sales, Transfers and Other	94,760
Gross Amount at Which Carried  at Close of Period
Land and Improvements less Cost of Sales, Transfers and Other	16,640
Building and Improvements less Cost of Sales, Transfers and Other	94,760
Total	111,400
Accumulated Depreciation	0
LAND
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0
Initial Cost to Company
Land and Improvements	143,376
Buildings and Improvements	0
Costs Capitalized Subsequent to Acquisition
Land and Improvements less Cost of Sales, Transfers and Other	15,055
Building and Improvements less Cost of Sales, Transfers and Other	0
Gross Amount at Which Carried  at Close of Period
Land and Improvements less Cost of Sales, Transfers and Other	158,430
Building and Improvements less Cost of Sales, Transfers and Other	0
Total	158,430
Accumulated Depreciation	0
LAND | Austin, TX | Domain 14 & 15
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0
Initial Cost to Company
Land and Improvements	21,000
Buildings and Improvements	0
Costs Capitalized Subsequent to Acquisition
Land and Improvements less Cost of Sales, Transfers and Other	0
Building and Improvements less Cost of Sales, Transfers and Other	0
Gross Amount at Which Carried  at Close of Period
Land and Improvements less Cost of Sales, Transfers and Other	21,000
Building and Improvements less Cost of Sales, Transfers and Other	0
Total	21,000
Accumulated Depreciation	0
LAND | Austin, TX | Domain Point 3
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0
Initial Cost to Company
Land and Improvements	11,018
Buildings and Improvements	0
Costs Capitalized Subsequent to Acquisition
Land and Improvements less Cost of Sales, Transfers and Other	0
Building and Improvements less Cost of Sales, Transfers and Other	0
Gross Amount at Which Carried  at Close of Period
Land and Improvements less Cost of Sales, Transfers and Other	11,018
Building and Improvements less Cost of Sales, Transfers and Other	0
Total	11,018
Accumulated Depreciation	0
LAND | Atlanta, GA | 887 West Peachtree
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0
Initial Cost to Company
Land and Improvements	11,883
Buildings and Improvements	0
Costs Capitalized Subsequent to Acquisition
Land and Improvements less Cost of Sales, Transfers and Other	14,429
Building and Improvements less Cost of Sales, Transfers and Other	0
Gross Amount at Which Carried  at Close of Period
Land and Improvements less Cost of Sales, Transfers and Other	26,311
Building and Improvements less Cost of Sales, Transfers and Other	0
Total	26,311
Accumulated Depreciation	0
LAND | Atlanta, GA | 3354 Peachtree
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0
Initial Cost to Company
Land and Improvements	13,410
Buildings and Improvements	0
Costs Capitalized Subsequent to Acquisition
Land and Improvements less Cost of Sales, Transfers and Other	8,099
Building and Improvements less Cost of Sales, Transfers and Other	0
Gross Amount at Which Carried  at Close of Period
Land and Improvements less Cost of Sales, Transfers and Other	21,509
Building and Improvements less Cost of Sales, Transfers and Other	0
Total	21,509
Accumulated Depreciation	0
LAND | Tampa, FL | Corporate Center
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0
Initial Cost to Company
Land and Improvements	5,188
Buildings and Improvements	0
Costs Capitalized Subsequent to Acquisition
Land and Improvements less Cost of Sales, Transfers and Other	(8)
Building and Improvements less Cost of Sales, Transfers and Other	0
Gross Amount at Which Carried  at Close of Period
Land and Improvements less Cost of Sales, Transfers and Other	5,180
Building and Improvements less Cost of Sales, Transfers and Other	0
Total	5,180
Accumulated Depreciation	0
LAND | Charlotte, NC | South End Station
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0
Initial Cost to Company
Land and Improvements	28,134
Buildings and Improvements	0
Costs Capitalized Subsequent to Acquisition
Land and Improvements less Cost of Sales, Transfers and Other	0
Building and Improvements less Cost of Sales, Transfers and Other	0
Gross Amount at Which Carried  at Close of Period
Land and Improvements less Cost of Sales, Transfers and Other	28,134
Building and Improvements less Cost of Sales, Transfers and Other	0
Total	28,134
Accumulated Depreciation	0
LAND | Charlotte, NC | Tremont
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0
Initial Cost to Company
Land and Improvements	18,779
Buildings and Improvements	0
Costs Capitalized Subsequent to Acquisition
Land and Improvements less Cost of Sales, Transfers and Other	75
Building and Improvements less Cost of Sales, Transfers and Other	0
Gross Amount at Which Carried  at Close of Period
Land and Improvements less Cost of Sales, Transfers and Other	18,854
Building and Improvements less Cost of Sales, Transfers and Other	0
Total	18,854
Accumulated Depreciation	0
LAND | Dallas, GA | Legacy Union 2 & 3
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0
Initial Cost to Company
Land and Improvements	22,724
Buildings and Improvements	0
Costs Capitalized Subsequent to Acquisition
Land and Improvements less Cost of Sales, Transfers and Other	0
Building and Improvements less Cost of Sales, Transfers and Other	0
Gross Amount at Which Carried  at Close of Period
Land and Improvements less Cost of Sales, Transfers and Other	22,724
Building and Improvements less Cost of Sales, Transfers and Other	0
Total	22,724
Accumulated Depreciation	0
LAND | Suburban Atlanta, GA | The Avenue Forsyth -Adjacent Land
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0
Initial Cost to Company
Land and Improvements	11,240
Buildings and Improvements	0
Costs Capitalized Subsequent to Acquisition
Land and Improvements less Cost of Sales, Transfers and Other	(7,540)
Building and Improvements less Cost of Sales, Transfers and Other	0
Gross Amount at Which Carried  at Close of Period
Land and Improvements less Cost of Sales, Transfers and Other	3,700
Building and Improvements less Cost of Sales, Transfers and Other	0
Total	3,700
Accumulated Depreciation	$ 0