v3.26.1
SCHEDULE III REAL ESTATE ASSETS AND ACCUMULATED DEPRECIATION AND AMORTIZATION - Schedule of Assets, Depreciation and Amortization (Details) - USD ($)
$ in Thousands
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost to Company, Land $ 212,153      
Initial Cost to Company, Building and Improvements 1,487,525      
Initial Cost to Company, Total 1,699,678      
Cost Capitalized Subsequent to Acquisition 161,788      
Gross Amount at which Carried at Close of Period, Land 197,889      
Gross Amount at which Carried at Close of Period, Building and Improvements 1,663,577      
Gross Amount at which Carried at Close of Period, Total 1,861,466 $ 2,244,923 $ 2,552,979 $ 2,568,352
Accumulated Depreciation and Amortization (559,269) $ (681,392) $ (713,501) $ (656,401)
Aggregate cost of real estate for federal income tax purposes 2,400,000      
Secured Debt | Amended and Restated Portfolio Loan Facility        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances 387,700      
Secured Debt | Modified Portfolio Revolving Loan Facility        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances 205,000      
Mortgages | 3001 & 3003 Washington Mortgage Loan        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances $ 138,800      
Town Center        
Real Estate and Accumulated Depreciation [Line Items]        
Ownership Percent 100.00%      
Initial Cost to Company, Land $ 7,428      
Initial Cost to Company, Building and Improvements 108,547      
Initial Cost to Company, Total 115,975      
Cost Capitalized Subsequent to Acquisition 31,719      
Gross Amount at which Carried at Close of Period, Land 7,428      
Gross Amount at which Carried at Close of Period, Building and Improvements 140,266      
Gross Amount at which Carried at Close of Period, Total 147,694      
Accumulated Depreciation and Amortization $ (65,259)      
Gateway Tech Center        
Real Estate and Accumulated Depreciation [Line Items]        
Ownership Percent 100.00%      
Initial Cost to Company, Land $ 5,617      
Initial Cost to Company, Building and Improvements 20,051      
Initial Cost to Company, Total 25,668      
Cost Capitalized Subsequent to Acquisition 12,267      
Gross Amount at which Carried at Close of Period, Land 5,617      
Gross Amount at which Carried at Close of Period, Building and Improvements 32,318      
Gross Amount at which Carried at Close of Period, Total 37,935      
Accumulated Depreciation and Amortization $ (15,826)      
60 South Sixth        
Real Estate and Accumulated Depreciation [Line Items]        
Ownership Percent 100.00%      
Initial Cost to Company, Land $ 16,951      
Initial Cost to Company, Building and Improvements 109,191      
Initial Cost to Company, Total 126,142      
Cost Capitalized Subsequent to Acquisition (37,901)      
Gross Amount at which Carried at Close of Period, Land 12,949      
Gross Amount at which Carried at Close of Period, Building and Improvements 75,292      
Gross Amount at which Carried at Close of Period, Total 88,241      
Accumulated Depreciation and Amortization $ (1,448)      
Accenture Tower        
Real Estate and Accumulated Depreciation [Line Items]        
Ownership Percent 100.00%      
Encumbrances $ 317,447      
Initial Cost to Company, Land 49,306      
Initial Cost to Company, Building and Improvements 370,662      
Initial Cost to Company, Total 419,968      
Cost Capitalized Subsequent to Acquisition 161,009      
Gross Amount at which Carried at Close of Period, Land 49,306      
Gross Amount at which Carried at Close of Period, Building and Improvements 531,671      
Gross Amount at which Carried at Close of Period, Total 580,977      
Accumulated Depreciation and Amortization $ (208,066)      
Ten Almaden        
Real Estate and Accumulated Depreciation [Line Items]        
Ownership Percent 100.00%      
Initial Cost to Company, Land $ 7,000      
Initial Cost to Company, Building and Improvements 110,292      
Initial Cost to Company, Total 117,292      
Cost Capitalized Subsequent to Acquisition 14,428      
Gross Amount at which Carried at Close of Period, Land 7,000      
Gross Amount at which Carried at Close of Period, Building and Improvements 124,720      
Gross Amount at which Carried at Close of Period, Total 131,720      
Accumulated Depreciation and Amortization $ (50,073)      
Towers at Emeryville        
Real Estate and Accumulated Depreciation [Line Items]        
Ownership Percent 100.00%      
Initial Cost to Company, Land $ 35,774      
Initial Cost to Company, Building and Improvements 147,167      
Initial Cost to Company, Total 182,941      
Cost Capitalized Subsequent to Acquisition (54,365)      
Gross Amount at which Carried at Close of Period, Land 31,772      
Gross Amount at which Carried at Close of Period, Building and Improvements 96,804      
Gross Amount at which Carried at Close of Period, Total 128,576      
Accumulated Depreciation and Amortization $ (1,260)      
3003 Washington Boulevard        
Real Estate and Accumulated Depreciation [Line Items]        
Ownership Percent 100.00%      
Initial Cost to Company, Land $ 18,800      
Initial Cost to Company, Building and Improvements 129,820      
Initial Cost to Company, Total 148,620      
Cost Capitalized Subsequent to Acquisition 6,288      
Gross Amount at which Carried at Close of Period, Land 18,800      
Gross Amount at which Carried at Close of Period, Building and Improvements 136,108      
Gross Amount at which Carried at Close of Period, Total 154,908      
Accumulated Depreciation and Amortization $ (53,735)      
201 17th Street        
Real Estate and Accumulated Depreciation [Line Items]        
Ownership Percent 100.00%      
Initial Cost to Company, Land $ 5,277      
Initial Cost to Company, Building and Improvements 86,859      
Initial Cost to Company, Total 92,136      
Cost Capitalized Subsequent to Acquisition 13,718      
Gross Amount at which Carried at Close of Period, Land 5,277      
Gross Amount at which Carried at Close of Period, Building and Improvements 100,577      
Gross Amount at which Carried at Close of Period, Total 105,854      
Accumulated Depreciation and Amortization $ (42,313)      
515 Congress        
Real Estate and Accumulated Depreciation [Line Items]        
Ownership Percent 100.00%      
Initial Cost to Company, Land $ 8,000      
Initial Cost to Company, Building and Improvements 106,261      
Initial Cost to Company, Total 114,261      
Cost Capitalized Subsequent to Acquisition 24,903      
Gross Amount at which Carried at Close of Period, Land 8,000      
Gross Amount at which Carried at Close of Period, Building and Improvements 131,164      
Gross Amount at which Carried at Close of Period, Total 139,164      
Accumulated Depreciation and Amortization $ (45,668)      
The Almaden        
Real Estate and Accumulated Depreciation [Line Items]        
Ownership Percent 100.00%      
Encumbrances $ 116,880      
Initial Cost to Company, Land 29,000      
Initial Cost to Company, Building and Improvements 130,145      
Initial Cost to Company, Total 159,145      
Cost Capitalized Subsequent to Acquisition (55,788)      
Gross Amount at which Carried at Close of Period, Land 22,740      
Gross Amount at which Carried at Close of Period, Building and Improvements 80,617      
Gross Amount at which Carried at Close of Period, Total 103,357      
Accumulated Depreciation and Amortization $ (1,230)      
3001 Washington Boulevard        
Real Estate and Accumulated Depreciation [Line Items]        
Ownership Percent 100.00%      
Initial Cost to Company, Land $ 9,900      
Initial Cost to Company, Building and Improvements 41,551      
Initial Cost to Company, Total 51,451      
Cost Capitalized Subsequent to Acquisition 9,597      
Gross Amount at which Carried at Close of Period, Land 9,900      
Gross Amount at which Carried at Close of Period, Building and Improvements 51,148      
Gross Amount at which Carried at Close of Period, Total 61,048      
Accumulated Depreciation and Amortization $ (18,518)      
Carillon        
Real Estate and Accumulated Depreciation [Line Items]        
Ownership Percent 100.00%      
Encumbrances $ 90,017      
Initial Cost to Company, Land 19,100      
Initial Cost to Company, Building and Improvements 126,979      
Initial Cost to Company, Total 146,079      
Cost Capitalized Subsequent to Acquisition 35,913      
Gross Amount at which Carried at Close of Period, Land 19,100      
Gross Amount at which Carried at Close of Period, Building and Improvements 162,892      
Gross Amount at which Carried at Close of Period, Total 181,992      
Accumulated Depreciation and Amortization $ (55,873)