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Schedule III - Real Estate and Accumulated Depreciation (Details) - USD ($)
$ in Thousands
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Initial Cost        
Encumbrances $ 277,734      
Land 316,862      
Buildings and Improvements 2,360,780      
Net Improvements (Retirements) Since Acquisition 697,019      
Gross Amount Which Carried        
Land 350,773      
Buildings and Improvements 3,012,919      
Total 3,374,780 $ 3,542,232 $ 3,617,240 $ 3,472,602
Accumulated Depreciation at December 31, 2024 1,171,803 $ 1,131,792 $ 1,063,060 $ 957,450
PENNSYLVANIA SUBURBS | Six Tower Bridge (181 Washington Street)        
Initial Cost        
Encumbrances 0      
Land 6,927      
Buildings and Improvements 14,722      
Net Improvements (Retirements) Since Acquisition 1,329      
Gross Amount Which Carried        
Land 6,236      
Buildings and Improvements 16,742      
Total 22,978      
Accumulated Depreciation at December 31, 2024 5,718      
PENNSYLVANIA SUBURBS | 426 Lancaster Avenue        
Initial Cost        
Encumbrances 0      
Land 1,689      
Buildings and Improvements 6,756      
Net Improvements (Retirements) Since Acquisition 9,405      
Gross Amount Which Carried        
Land 1,686      
Buildings and Improvements 16,164      
Total 17,850      
Accumulated Depreciation at December 31, 2024 4,954      
PENNSYLVANIA SUBURBS | 640 Freedom Business Center        
Initial Cost        
Encumbrances 0      
Land 1,015      
Buildings and Improvements 20,098      
Net Improvements (Retirements) Since Acquisition 5,404      
Gross Amount Which Carried        
Land 278      
Buildings and Improvements 26,239      
Total 26,517      
Accumulated Depreciation at December 31, 2024 18,254      
PENNSYLVANIA SUBURBS | 620 Freedom Business Center        
Initial Cost        
Encumbrances 0      
Land 666      
Buildings and Improvements 13,118      
Net Improvements (Retirements) Since Acquisition 2,804      
Gross Amount Which Carried        
Land 181      
Buildings and Improvements 16,407      
Total 16,588      
Accumulated Depreciation at December 31, 2024 11,175      
PENNSYLVANIA SUBURBS | 1000 First Avenue        
Initial Cost        
Encumbrances 0      
Land 0      
Buildings and Improvements 13,708      
Net Improvements (Retirements) Since Acquisition 3,093      
Gross Amount Which Carried        
Land 0      
Buildings and Improvements 16,801      
Total 16,801      
Accumulated Depreciation at December 31, 2024 13,161      
PENNSYLVANIA SUBURBS | 1060 First Avenue        
Initial Cost        
Encumbrances 0      
Land 0      
Buildings and Improvements 13,665      
Net Improvements (Retirements) Since Acquisition 3,851      
Gross Amount Which Carried        
Land 0      
Buildings and Improvements 17,516      
Total 17,516      
Accumulated Depreciation at December 31, 2024 14,273      
PENNSYLVANIA SUBURBS | 630 Freedom Business Center Drive        
Initial Cost        
Encumbrances 0      
Land 666      
Buildings and Improvements 13,251      
Net Improvements (Retirements) Since Acquisition 3,256      
Gross Amount Which Carried        
Land 183      
Buildings and Improvements 16,990      
Total 17,173      
Accumulated Depreciation at December 31, 2024 12,119      
PENNSYLVANIA SUBURBS | 1020 First Avenue        
Initial Cost        
Encumbrances 0      
Land 0      
Buildings and Improvements 10,744      
Net Improvements (Retirements) Since Acquisition 4,038      
Gross Amount Which Carried        
Land 0      
Buildings and Improvements 14,782      
Total 14,782      
Accumulated Depreciation at December 31, 2024 11,908      
PENNSYLVANIA SUBURBS | 1040 First Avenue        
Initial Cost        
Encumbrances 0      
Land 0      
Buildings and Improvements 14,142      
Net Improvements (Retirements) Since Acquisition 4,870      
Gross Amount Which Carried        
Land 0      
Buildings and Improvements 19,012      
Total 19,012      
Accumulated Depreciation at December 31, 2024 15,592      
PENNSYLVANIA SUBURBS | 610 Freedom Business Center Drive        
Initial Cost        
Encumbrances 0      
Land 485      
Buildings and Improvements 9,602      
Net Improvements (Retirements) Since Acquisition 1,688      
Gross Amount Which Carried        
Land 133      
Buildings and Improvements 11,642      
Total 11,775      
Accumulated Depreciation at December 31, 2024 8,553      
PENNSYLVANIA SUBURBS | 650 Park Avenue        
Initial Cost        
Encumbrances 0      
Land 1,916      
Buildings and Improvements 4,378      
Net Improvements (Retirements) Since Acquisition (4,378)      
Gross Amount Which Carried        
Land 1,916      
Buildings and Improvements 0      
Total 1,916      
Accumulated Depreciation at December 31, 2024 0      
PENNSYLVANIA SUBURBS | 600 Park Avenue        
Initial Cost        
Encumbrances 0      
Land 1,012      
Buildings and Improvements 4,048      
Net Improvements (Retirements) Since Acquisition 0      
Gross Amount Which Carried        
Land 1,012      
Buildings and Improvements 4,048      
Total 5,060      
Accumulated Depreciation at December 31, 2024 2,800      
PENNSYLVANIA SUBURBS | 933 First Avenue        
Initial Cost        
Encumbrances 15,960      
Land 3,127      
Buildings and Improvements 20,794      
Net Improvements (Retirements) Since Acquisition (1,125)      
Gross Amount Which Carried        
Land 3,127      
Buildings and Improvements 19,669      
Total 22,796      
Accumulated Depreciation at December 31, 2024 6,561      
PENNSYLVANIA SUBURBS | 500 North Gulph Road        
Initial Cost        
Encumbrances 16,121      
Land 1,303      
Buildings and Improvements 5,201      
Net Improvements (Retirements) Since Acquisition 22,039      
Gross Amount Which Carried        
Land 1,303      
Buildings and Improvements 27,240      
Total 28,543      
Accumulated Depreciation at December 31, 2024 6,941      
PENNSYLVANIA SUBURBS | 401 Plymouth Road        
Initial Cost        
Encumbrances 0      
Land 6,199      
Buildings and Improvements 16,131      
Net Improvements (Retirements) Since Acquisition 16,500      
Gross Amount Which Carried        
Land 6,198      
Buildings and Improvements 32,632      
Total 38,830      
Accumulated Depreciation at December 31, 2024 17,624      
PENNSYLVANIA SUBURBS | Metroplex (4000 Chemical Road)        
Initial Cost        
Encumbrances 16,055      
Land 4,373      
Buildings and Improvements 24,546      
Net Improvements (Retirements) Since Acquisition 5,554      
Gross Amount Which Carried        
Land 4,373      
Buildings and Improvements 30,100      
Total 34,473      
Accumulated Depreciation at December 31, 2024 12,291      
PENNSYLVANIA SUBURBS | Metroplex II        
Initial Cost        
Encumbrances 0      
Land 0      
Buildings and Improvements 0      
Net Improvements (Retirements) Since Acquisition 569      
Gross Amount Which Carried        
Land 0      
Buildings and Improvements 569      
Total 569      
Accumulated Depreciation at December 31, 2024 44      
PENNSYLVANIA SUBURBS | Metroplex III        
Initial Cost        
Encumbrances 0      
Land 0      
Buildings and Improvements 0      
Net Improvements (Retirements) Since Acquisition 317      
Gross Amount Which Carried        
Land 0      
Buildings and Improvements 317      
Total 317      
Accumulated Depreciation at December 31, 2024 25      
PENNSYLVANIA SUBURBS | 351 Plymouth Road        
Initial Cost        
Encumbrances 0      
Land 1,043      
Buildings and Improvements 555      
Net Improvements (Retirements) Since Acquisition 0      
Gross Amount Which Carried        
Land 1,043      
Buildings and Improvements 555      
Total 1,598      
Accumulated Depreciation at December 31, 2024 274      
PENNSYLVANIA SUBURBS | 150 Radnor Chester Road        
Initial Cost        
Encumbrances 0      
Land 11,925      
Buildings and Improvements 36,986      
Net Improvements (Retirements) Since Acquisition 21,369      
Gross Amount Which Carried        
Land 11,897      
Buildings and Improvements 58,383      
Total 70,280      
Accumulated Depreciation at December 31, 2024 32,006      
PENNSYLVANIA SUBURBS | One Radnor Corporate Center        
Initial Cost        
Encumbrances 0      
Land 7,323      
Buildings and Improvements 28,613      
Net Improvements (Retirements) Since Acquisition 3,694      
Gross Amount Which Carried        
Land 7,323      
Buildings and Improvements 32,307      
Total 39,630      
Accumulated Depreciation at December 31, 2024 20,198      
PENNSYLVANIA SUBURBS | 201 King of Prussia Road        
Initial Cost        
Encumbrances 0      
Land 8,956      
Buildings and Improvements 29,811      
Net Improvements (Retirements) Since Acquisition 8,481      
Gross Amount Which Carried        
Land 8,949      
Buildings and Improvements 38,331      
Total 47,280      
Accumulated Depreciation at December 31, 2024 26,302      
PENNSYLVANIA SUBURBS | 555 Lancaster Avenue        
Initial Cost        
Encumbrances 0      
Land 8,014      
Buildings and Improvements 16,508      
Net Improvements (Retirements) Since Acquisition 13,005      
Gross Amount Which Carried        
Land 8,609      
Buildings and Improvements 28,918      
Total 37,527      
Accumulated Depreciation at December 31, 2024 12,138      
PENNSYLVANIA SUBURBS | Four Radnor Corporate Center        
Initial Cost        
Encumbrances 0      
Land 5,406      
Buildings and Improvements 21,390      
Net Improvements (Retirements) Since Acquisition 8,096      
Gross Amount Which Carried        
Land 5,705      
Buildings and Improvements 29,187      
Total 34,892      
Accumulated Depreciation at December 31, 2024 17,614      
PENNSYLVANIA SUBURBS | Five Radnor Corporate Center        
Initial Cost        
Encumbrances 0      
Land 6,506      
Buildings and Improvements 25,525      
Net Improvements (Retirements) Since Acquisition 9,361      
Gross Amount Which Carried        
Land 6,578      
Buildings and Improvements 34,814      
Total 41,392      
Accumulated Depreciation at December 31, 2024 18,632      
PENNSYLVANIA SUBURBS | Three Radnor Corporate Center        
Initial Cost        
Encumbrances 0      
Land 4,773      
Buildings and Improvements 17,961      
Net Improvements (Retirements) Since Acquisition 2,621      
Gross Amount Which Carried        
Land 4,791      
Buildings and Improvements 20,564      
Total 25,355      
Accumulated Depreciation at December 31, 2024 13,449      
PENNSYLVANIA SUBURBS | Two Radnor Corporate Center        
Initial Cost        
Encumbrances 0      
Land 3,937      
Buildings and Improvements 15,484      
Net Improvements (Retirements) Since Acquisition 5,469      
Gross Amount Which Carried        
Land 3,942      
Buildings and Improvements 20,948      
Total 24,890      
Accumulated Depreciation at December 31, 2024 10,943      
PENNSYLVANIA SUBURBS | 130 Radnor Chester Road        
Initial Cost        
Encumbrances 0      
Land 2,573      
Buildings and Improvements 8,338      
Net Improvements (Retirements) Since Acquisition 141      
Gross Amount Which Carried        
Land 2,567      
Buildings and Improvements 8,485      
Total 11,052      
Accumulated Depreciation at December 31, 2024 4,562      
PENNSYLVANIA SUBURBS | 170 Radnor Chester Road        
Initial Cost        
Encumbrances 0      
Land 2,514      
Buildings and Improvements 8,147      
Net Improvements (Retirements) Since Acquisition 1,840      
Gross Amount Which Carried        
Land 2,509      
Buildings and Improvements 9,992      
Total 12,501      
Accumulated Depreciation at December 31, 2024 5,586      
PENNSYLVANIA SUBURBS | 155 King of Prussia Road        
Initial Cost        
Encumbrances 32,734      
Land 0      
Buildings and Improvements 0      
Net Improvements (Retirements) Since Acquisition 62,181      
Gross Amount Which Carried        
Land 11,432      
Buildings and Improvements 50,749      
Total 62,181      
Accumulated Depreciation at December 31, 2024 261      
PENNSYLVANIA SUBURBS | 250 King of Prussia Road        
Initial Cost        
Encumbrances 0      
Land 0      
Buildings and Improvements 20,566      
Net Improvements (Retirements) Since Acquisition 65,333      
Gross Amount Which Carried        
Land 112      
Buildings and Improvements 74,699      
Total 85,899      
Accumulated Depreciation at December 31, 2024 10,336      
PENNSYLVANIA SUBURBS | 101 West Elm Street        
Initial Cost        
Encumbrances 0      
Land 6,251      
Buildings and Improvements 25,209      
Net Improvements (Retirements) Since Acquisition 2,803      
Gross Amount Which Carried        
Land 6,251      
Buildings and Improvements 28,012      
Total 34,263      
Accumulated Depreciation at December 31, 2024 13,188      
PENNSYLVANIA SUBURBS | 1 West Elm Street        
Initial Cost        
Encumbrances 0      
Land 3,557      
Buildings and Improvements 14,249      
Net Improvements (Retirements) Since Acquisition 9,139      
Gross Amount Which Carried        
Land 3,557      
Buildings and Improvements 23,388      
Total 26,945      
Accumulated Depreciation at December 31, 2024 9,538      
PHILADELPHIA CBD | Cira Centre (2929 Arch Street)        
Initial Cost        
Encumbrances 0      
Land 0      
Buildings and Improvements 208,570      
Net Improvements (Retirements) Since Acquisition 41,639      
Gross Amount Which Carried        
Land 12,586      
Buildings and Improvements 237,623      
Total 250,209      
Accumulated Depreciation at December 31, 2024 91,875      
PHILADELPHIA CBD | Three Logan Square (1717 Arch Street)        
Initial Cost        
Encumbrances 0      
Land 0      
Buildings and Improvements 98,188      
Net Improvements (Retirements) Since Acquisition 79,064      
Gross Amount Which Carried        
Land 25,195      
Buildings and Improvements 152,057      
Total 177,252      
Accumulated Depreciation at December 31, 2024 66,346      
PHILADELPHIA CBD | One Logan Square (130 North 18th Street)        
Initial Cost        
Encumbrances 0      
Land 14,496      
Buildings and Improvements 107,736      
Net Improvements (Retirements) Since Acquisition 34,812      
Gross Amount Which Carried        
Land 14,473      
Buildings and Improvements 142,658      
Total 157,131      
Accumulated Depreciation at December 31, 2024 80,055      
PHILADELPHIA CBD | Two Logan Square (100 North 18th Street)        
Initial Cost        
Encumbrances 0      
Land 16,066      
Buildings and Improvements 100,255      
Net Improvements (Retirements) Since Acquisition 33,863      
Gross Amount Which Carried        
Land 16,066      
Buildings and Improvements 134,118      
Total 150,184      
Accumulated Depreciation at December 31, 2024 71,429      
PHILADELPHIA CBD | Cira Centre South Garage (129 South 30th Street)        
Initial Cost        
Encumbrances 0      
Land 0      
Buildings and Improvements 76,008      
Net Improvements (Retirements) Since Acquisition 26,733      
Gross Amount Which Carried        
Land 6,460      
Buildings and Improvements 96,281      
Total 102,741      
Accumulated Depreciation at December 31, 2024 33,158      
PHILADELPHIA CBD | 1900 Market Street        
Initial Cost        
Encumbrances 61,703      
Land 7,768      
Buildings and Improvements 17,263      
Net Improvements (Retirements) Since Acquisition 58,709      
Gross Amount Which Carried        
Land 7,768      
Buildings and Improvements 75,972      
Total 83,740      
Accumulated Depreciation at December 31, 2024 38,077      
PHILADELPHIA CBD | 3020 Market Street        
Initial Cost        
Encumbrances 0      
Land 0      
Buildings and Improvements 21,417      
Net Improvements (Retirements) Since Acquisition 5,965      
Gross Amount Which Carried        
Land 0      
Buildings and Improvements 27,382      
Total 27,382      
Accumulated Depreciation at December 31, 2024 14,548      
PHILADELPHIA CBD | 618-634 Market Street        
Initial Cost        
Encumbrances 0      
Land 13,365      
Buildings and Improvements 5,791      
Net Improvements (Retirements) Since Acquisition 5,084      
Gross Amount Which Carried        
Land 13,365      
Buildings and Improvements 10,875      
Total 24,240      
Accumulated Depreciation at December 31, 2024 7,864      
PHILADELPHIA CBD | FMC Tower at Cira Centre South (2929 Walnut Street)        
Initial Cost        
Encumbrances 0      
Land 0      
Buildings and Improvements 400,294      
Net Improvements (Retirements) Since Acquisition 11,406      
Gross Amount Which Carried        
Land 0      
Buildings and Improvements 411,700      
Total 411,700      
Accumulated Depreciation at December 31, 2024 115,823      
PHILADELPHIA CBD | 2100 Market Street        
Initial Cost        
Encumbrances 0      
Land 18,827      
Buildings and Improvements 0      
Net Improvements (Retirements) Since Acquisition 6,312      
Gross Amount Which Carried        
Land 18,854      
Buildings and Improvements 6,285      
Total 25,139      
Accumulated Depreciation at December 31, 2024 3,147      
PHILADELPHIA CBD | 1505-11 Race Street        
Initial Cost        
Encumbrances 0      
Land 3,662      
Buildings and Improvements 6,061      
Net Improvements (Retirements) Since Acquisition 8      
Gross Amount Which Carried        
Land 3,670      
Buildings and Improvements 6,061      
Total 9,731      
Accumulated Depreciation at December 31, 2024 631      
PHILADELPHIA CBD | 3000 Market Street        
Initial Cost        
Encumbrances 0      
Land 18,924      
Buildings and Improvements 13,080      
Net Improvements (Retirements) Since Acquisition 17,349      
Gross Amount Which Carried        
Land 18,924      
Buildings and Improvements 30,429      
Total 49,353      
Accumulated Depreciation at December 31, 2024 6,869      
PHILADELPHIA CBD | The Bulletin Building (3025 Market Street)        
Initial Cost        
Encumbrances 49,429      
Land 0      
Buildings and Improvements 24,377      
Net Improvements (Retirements) Since Acquisition 44,435      
Gross Amount Which Carried        
Land 0      
Buildings and Improvements 68,812      
Total 68,812      
Accumulated Depreciation at December 31, 2024 18,669      
PHILADELPHIA CBD | 3001-3003 JFK Boulevard        
Initial Cost        
Encumbrances 0      
Land 0      
Buildings and Improvements 0      
Net Improvements (Retirements) Since Acquisition 294      
Gross Amount Which Carried        
Land 0      
Buildings and Improvements 294      
Total 294      
Accumulated Depreciation at December 31, 2024 64      
PHILADELPHIA CBD | The Lift at Juniper Street        
Initial Cost        
Encumbrances 0      
Land 0      
Buildings and Improvements 0      
Net Improvements (Retirements) Since Acquisition 18,789      
Gross Amount Which Carried        
Land 478      
Buildings and Improvements 18,311      
Total 18,789      
Accumulated Depreciation at December 31, 2024 64      
Austin | 401-405 Colorado Street        
Initial Cost        
Encumbrances 62,688      
Land 0      
Buildings and Improvements 112,678      
Net Improvements (Retirements) Since Acquisition 564      
Gross Amount Which Carried        
Land 0      
Buildings and Improvements 113,242      
Total 113,242      
Accumulated Depreciation at December 31, 2024 9,944      
Austin | 11501 Burnet Road - Building 1        
Initial Cost        
Encumbrances 0      
Land 3,755      
Buildings and Improvements 22,702      
Net Improvements (Retirements) Since Acquisition 4      
Gross Amount Which Carried        
Land 3,755      
Buildings and Improvements 22,706      
Total 26,461      
Accumulated Depreciation at December 31, 2024 14,502      
Austin | 11501 Burnet Road - Building 2        
Initial Cost        
Encumbrances 0      
Land 2,732      
Buildings and Improvements 16,305      
Net Improvements (Retirements) Since Acquisition 733      
Gross Amount Which Carried        
Land 2,732      
Buildings and Improvements 17,038      
Total 19,770      
Accumulated Depreciation at December 31, 2024 11,085      
Austin | 11501 Burnet Road - Building 3        
Initial Cost        
Encumbrances 0      
Land 3,688      
Buildings and Improvements 22,348      
Net Improvements (Retirements) Since Acquisition 7,118      
Gross Amount Which Carried        
Land 3,688      
Buildings and Improvements 29,466      
Total 33,154      
Accumulated Depreciation at December 31, 2024 18,002      
Austin | 11501 Burnet Road - Building 4        
Initial Cost        
Encumbrances 0      
Land 2,614      
Buildings and Improvements 15,740      
Net Improvements (Retirements) Since Acquisition 3      
Gross Amount Which Carried        
Land 2,614      
Buildings and Improvements 15,743      
Total 18,357      
Accumulated Depreciation at December 31, 2024 10,055      
Austin | 11501 Burnet Road - Building 5        
Initial Cost        
Encumbrances 0      
Land 3,689      
Buildings and Improvements 22,354      
Net Improvements (Retirements) Since Acquisition 4      
Gross Amount Which Carried        
Land 3,689      
Buildings and Improvements 22,358      
Total 26,047      
Accumulated Depreciation at December 31, 2024 14,281      
Austin | 11501 Burnet Road - Building 6        
Initial Cost        
Encumbrances 0      
Land 2,676      
Buildings and Improvements 15,972      
Net Improvements (Retirements) Since Acquisition 13,842      
Gross Amount Which Carried        
Land 2,676      
Buildings and Improvements 29,814      
Total 32,490      
Accumulated Depreciation at December 31, 2024 19,914      
Austin | 11501 Burnet Road - Building 8        
Initial Cost        
Encumbrances 0      
Land 1,400      
Buildings and Improvements 7,422      
Net Improvements (Retirements) Since Acquisition 1,776      
Gross Amount Which Carried        
Land 1,400      
Buildings and Improvements 9,198      
Total 10,598      
Accumulated Depreciation at December 31, 2024 5,888      
Austin | 11501 Burnet Road - Parking Garage        
Initial Cost        
Encumbrances 0      
Land 0      
Buildings and Improvements 19,826      
Net Improvements (Retirements) Since Acquisition 1,588      
Gross Amount Which Carried        
Land 0      
Buildings and Improvements 21,414      
Total 21,414      
Accumulated Depreciation at December 31, 2024 13,989      
Austin | Four Points Centre 3 (11120 Four Points Drive)        
Initial Cost        
Encumbrances 23,044      
Land 1,140      
Buildings and Improvements 0      
Net Improvements (Retirements) Since Acquisition 40,322      
Gross Amount Which Carried        
Land 1,141      
Buildings and Improvements 40,321      
Total 41,462      
Accumulated Depreciation at December 31, 2024 10,423      
Austin | Four Barton Skyway (1301 South MoPac Expressway)        
Initial Cost        
Encumbrances 0      
Land 13,301      
Buildings and Improvements 57,041      
Net Improvements (Retirements) Since Acquisition 7,906      
Gross Amount Which Carried        
Land 13,300      
Buildings and Improvements 64,948      
Total 78,248      
Accumulated Depreciation at December 31, 2024 11,742      
Austin | Four Points Centre (11305 Four Points Drive)        
Initial Cost        
Encumbrances 0      
Land 7,800      
Buildings and Improvements 43,581      
Net Improvements (Retirements) Since Acquisition 4,160      
Gross Amount Which Carried        
Land 7,800      
Buildings and Improvements 47,741      
Total 55,541      
Accumulated Depreciation at December 31, 2024 9,392      
Austin | River Place - Building 1 (6500 River Place Boulevard)        
Initial Cost        
Encumbrances 0      
Land 2,004      
Buildings and Improvements 17,680      
Net Improvements (Retirements) Since Acquisition 475      
Gross Amount Which Carried        
Land 2,004      
Buildings and Improvements 18,155      
Total 20,159      
Accumulated Depreciation at December 31, 2024 2,915      
Austin | River Place - Building 2 (6500 River Place Boulevard)        
Initial Cost        
Encumbrances 0      
Land 3,137      
Buildings and Improvements 29,254      
Net Improvements (Retirements) Since Acquisition 1,523      
Gross Amount Which Carried        
Land 3,137      
Buildings and Improvements 30,777      
Total 33,914      
Accumulated Depreciation at December 31, 2024 5,084      
Austin | River Place - Building 3 (6500 River Place Boulevard)        
Initial Cost        
Encumbrances 0      
Land 3,064      
Buildings and Improvements 26,705      
Net Improvements (Retirements) Since Acquisition 1,204      
Gross Amount Which Carried        
Land 3,064      
Buildings and Improvements 27,909      
Total 30,973      
Accumulated Depreciation at December 31, 2024 4,610      
Austin | River Place - Building 4 (6500 River Place Boulevard        
Initial Cost        
Encumbrances 0      
Land 2,273      
Buildings and Improvements 18,617      
Net Improvements (Retirements) Since Acquisition 1,119      
Gross Amount Which Carried        
Land 2,273      
Buildings and Improvements 19,736      
Total 22,009      
Accumulated Depreciation at December 31, 2024 3,355      
Austin | River Place - Building 5 (6500 River Place Boulevard)        
Initial Cost        
Encumbrances 0      
Land 1,752      
Buildings and Improvements 14,315      
Net Improvements (Retirements) Since Acquisition 720      
Gross Amount Which Carried        
Land 1,752      
Buildings and Improvements 15,035      
Total 16,787      
Accumulated Depreciation at December 31, 2024 2,774      
Austin | River Place - Building 6 (6500 River Place Boulevard)        
Initial Cost        
Encumbrances 0      
Land 1,598      
Buildings and Improvements 12,945      
Net Improvements (Retirements) Since Acquisition 689      
Gross Amount Which Carried        
Land 1,598      
Buildings and Improvements 13,634      
Total 15,232      
Accumulated Depreciation at December 31, 2024 2,583      
Austin | River Place - Building 7 (6500 River Place Boulevard)        
Initial Cost        
Encumbrances 0      
Land 1,801      
Buildings and Improvements 16,486      
Net Improvements (Retirements) Since Acquisition 463      
Gross Amount Which Carried        
Land 1,801      
Buildings and Improvements 16,949      
Total 18,750      
Accumulated Depreciation at December 31, 2024 2,810      
Austin | Quarry Lake II (4516 Seton Center Parkway)        
Initial Cost        
Encumbrances 0      
Land 3,970      
Buildings and Improvements 30,546      
Net Improvements (Retirements) Since Acquisition 2,042      
Gross Amount Which Carried        
Land 3,867      
Buildings and Improvements 32,691      
Total 36,558      
Accumulated Depreciation at December 31, 2024 5,555      
Other | 6600 Rockledge Drive        
Initial Cost        
Encumbrances 0      
Land 0      
Buildings and Improvements 37,421      
Net Improvements (Retirements) Since Acquisition (9,985)      
Gross Amount Which Carried        
Land 0      
Buildings and Improvements 27,436      
Total 27,436      
Accumulated Depreciation at December 31, 2024 10,245      
Other | 1676 International Drive        
Initial Cost        
Encumbrances 0      
Land 18,437      
Buildings and Improvements 97,538      
Net Improvements (Retirements) Since Acquisition (28,447)      
Gross Amount Which Carried        
Land 10,239      
Buildings and Improvements 77,289      
Total 87,528      
Accumulated Depreciation at December 31, 2024 25,796      
Other | 8260 Greensboro Drive        
Initial Cost        
Encumbrances 0      
Land 7,952      
Buildings and Improvements 33,964      
Net Improvements (Retirements) Since Acquisition 11,210      
Gross Amount Which Carried        
Land 8,102      
Buildings and Improvements 45,024      
Total 53,126      
Accumulated Depreciation at December 31, 2024 17,525      
Other | 2340 Dulles Corner Boulevard        
Initial Cost        
Encumbrances 0      
Land 16,345      
Buildings and Improvements 65,379      
Net Improvements (Retirements) Since Acquisition (21,418)      
Gross Amount Which Carried        
Land 9,747      
Buildings and Improvements 50,559      
Total 60,306      
Accumulated Depreciation at December 31, 2024 4,018      
Other | Main Street - Plaza 1000        
Initial Cost        
Encumbrances 0      
Land 2,732      
Buildings and Improvements 10,942      
Net Improvements (Retirements) Since Acquisition 324      
Gross Amount Which Carried        
Land 2,732      
Buildings and Improvements 11,266      
Total 13,998      
Accumulated Depreciation at December 31, 2024 11,104      
Other | Main Street - Piazza        
Initial Cost        
Encumbrances 0      
Land 696      
Buildings and Improvements 2,802      
Net Improvements (Retirements) Since Acquisition 2,692      
Gross Amount Which Carried        
Land 704      
Buildings and Improvements 5,486      
Total 6,190      
Accumulated Depreciation at December 31, 2024 4,257      
Other | Main Street - Promenade        
Initial Cost        
Encumbrances 0      
Land 532      
Buildings and Improvements 2,052      
Net Improvements (Retirements) Since Acquisition 188      
Gross Amount Which Carried        
Land 532      
Buildings and Improvements 2,240      
Total 2,772      
Accumulated Depreciation at December 31, 2024 1,597      
Other | 920 North King Street        
Initial Cost        
Encumbrances 0      
Land 6,141      
Buildings and Improvements 21,140      
Net Improvements (Retirements) Since Acquisition (23,053)      
Gross Amount Which Carried        
Land 331      
Buildings and Improvements 3,897      
Total 4,228      
Accumulated Depreciation at December 31, 2024 1,240      
Other | 300 Delaware Avenue        
Initial Cost        
Encumbrances 0      
Land 6,369      
Buildings and Improvements 13,739      
Net Improvements (Retirements) Since Acquisition 2,044      
Gross Amount Which Carried        
Land 6,365      
Buildings and Improvements 15,787      
Total 22,152      
Accumulated Depreciation at December 31, 2024 $ 11,479