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Award Type Award Type [Axis] Total Notes Payable, net Long-term debt Long-Term Debt Legal Entity [Axis] Legal Entity [Axis] Total assets Assets Investment, Name [Domain] Investment, Name [Domain] Cumulative Distributions in Excess of Net Income Accumulated Distributions in Excess of Net Income [Member] 2026 Finite-Lived Intangible Asset, Expected Amortization, Year One Shares held by affiliate (in shares) Shares held by affiliate Shares held by affiliate Restricted Cash Cash and Cash Equivalents, Restricted Cash and Cash Equivalents, Policy [Policy Text Block] Segment, Geographical [Domain] Geographical [Domain] Income Taxes Income Tax, Policy [Policy Text Block] Entity Address, City or Town Entity Address, City or Town Cash Flows from Operating Activities: Cash Provided by (Used in) Operating Activity, Including Discontinued Operation [Abstract] Debt instrument, covenant, sale of, The Almaden, required cash proceeds to reduce obligations Debt Instrument, Covenant, Sale of The Almaden, Required Cash Proceeds to Reduce Obligations Debt Instrument, Covenant, Sale of The Almaden, Required Cash Proceeds to Reduce Obligations Depreciation and amortization expense SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation, Depreciation Expense Concentration Risk Type [Axis] Concentration Risk Type [Axis] Total real estate held for investment, cost Total real estate held for investment, cost Real Estate Investment Property, at Cost Non-PEO NEO Average Compensation Actually Paid Amount Non-PEO NEO Average Compensation Actually Paid Amount Income Statement Location [Domain] Statement of Income Location, Balance [Domain] Sale SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation, Investment in Real Estate Sold Compensation Actually Paid vs. Other Measure Compensation Actually Paid vs. Other Measure [Text Block] Other operating income Disposal Group, Including Discontinued Operation, Other Income 2029 Finite-Lived Intangible Asset, Expected Amortization, Year Four Entity Emerging Growth Company Entity Emerging Growth Company 2028 Long-Term Debt, Maturity, Year Three Credit Facility Credit Facility [Member] Credit Facility Distributions declared per common share (in dollars per share) Common Stock, Dividends, Per Share, Declared Entity Common Stock, Shares Outstanding Entity Common Stock, Shares Outstanding Change in Fair Value as of Vesting Date of Prior Year Equity Awards Vested in Covered Year Change in Fair Value as of Vesting Date of Prior Year Equity Awards Vested in Covered Year [Member] Significant Other Observable Inputs (Level 2) Fair Value, Inputs, Level 2 [Member] Deferred financing costs, net Debt Issuance Costs, Net Dividend reinvestment plan, purchase price per share as percent of estimated value Dividend Reinvestment Plan, Purchase Price For Share as Percent of Estimated Value Dividend Reinvestment Plan, Purchase Price For Share as Percent of Estimated Value Document Financial Statement Error Correction Document Financial Statement Error Correction [Flag] Net loss (gain) on derivative instruments Derivative, Gain (Loss) on Derivative, Net Restricted cash Restricted Cash and Cash Equivalent Investment in an unconsolidated entity Equity Method Investments Insider Trading Policies and Procedures Not Adopted Insider Trading Policies and Procedures Not Adopted [Text Block] Asset management fees to affiliate Asset management fees to affiliate Disposal Group, Including Discontinued Operation, Asset Management Costs Disposal Group, Including Discontinued Operation, Asset Management Costs Related Party Related Party [Member] Common stock, shares outstanding (in shares) Beginning balance (in shares) Ending balance (in shares) Common Stock, Shares, Outstanding Above-market leases, cost Above-market leases, gross Above-market leases, gross. 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[Member] Sale of Stock [Domain] Sale of Stock [Domain] Other income (loss): Component of Operating Income [Abstract] Nonrecurring Basis Fair Value, Nonrecurring [Member] Disposal Group, Disposition Other than Sale, Not Discontinued Operations Disposal Group, Disposed of by Means Other than Sale, Not Discontinued Operations [Member] Preferred stock, shares issued (in shares) Preferred Stock, Shares Issued Pension Adjustments Service Cost Pension Adjustments Service Cost [Member] Above-Market Lease Assets Above Market Leases [Member] Fair Value Hierarchy and NAV [Axis] Fair Value Hierarchy and NAV [Axis] Customer Concentration Risk Customer Concentration Risk [Member] Portfolio Loan Properties Portfolio Loan Properties [Member] 60 South Sixth, Sterling Plaza, Towers at Emeryville, Ten Almaden and Town Center Net loss Net loss Net Income (Loss), Including Portion Attributable to Noncontrolling Interest Total Stockholders’ Equity Parent [Member] Accrued purchase obligations Recorded 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Origination costs include estimates of costs avoided associated with leasing the property, including tenant allowance and improvements and leasing commissions. Absorption costs relate to the value of opportunity costs calculated using the contractual amounts paid pursuant to in-place leases over market absorption period for a similar lease. 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Costs Forgone Recovery due to Expense of Enforcement, Amount Forgone Recovery due to Expense of Enforcement, Amount Recorded Unconditional Purchase Obligation, Category [Domain] Recorded Unconditional Purchase Obligation, Category [Domain] Interest rate swap settlements for off-market swap instruments Interest Rate Swap Settlements for Off-Market Swap Instruments, Financing Activities Interest Rate Swap Settlements for Off-Market Swap Instruments, Financing Activities Consolidated Entities [Axis] Consolidated Entities [Axis] Common stock, par value (in dollars per share) Common Stock, Par or Stated Value Per Share Common stock, shares issued (in shares) Common Stock, Shares, Issued Disposition fees Disposition Fees [Member] Disposition Fees [Member] Derivative Asset, Statement of Financial Position [Extensible Enumeration] Derivative Asset, Statement of Financial Position [Extensible Enumeration] 2029 Long-Term Debt, Maturity, Year Four Dividend income from real estate equity securities Dividend Income, Equity Securities, Operating Impairment charges on real estate Impairment of real estate Impairment of Real Estate Use of Estimates Use of Estimates, Policy [Policy Text Block] Entity Public Float Entity Public Float O 2023 M1 Dividends O 2023 M1 Dividends [Member] O 2023 M1 Dividends Trading Arrangement: Trading Arrangement [Axis] Total Shareholder Return Amount Total Shareholder Return Amount Rental income Operating Lease, Lease Income Real Estate, Type of Property [Axis] Real Estate, Type of Property [Axis] Schedule of Assets at Fair Value Fair Value Measurements, Recurring and Nonrecurring [Table Text Block] Unrealized loss (gain) Unrealized Gain (Loss) on Hybrid Instrument, Net SUBSEQUENT EVENTS Subsequent Events [Text Block] Insider Trading Arrangements [Line Items] Below Market Lease, Net, Amortization Income, Fiscal Year Maturity [Abstract] Below Market Lease, Net, Amortization Income, Fiscal Year Maturity [Abstract] Fully Funded Bonus Retention Fund Fully Funded Bonus Retention Fund [Member] Fully Funded Bonus Retention Fund Capital Expenditures Capital Addition Purchase Commitments [Member] 2027 Lessor, Operating Lease, Payment to be Received, Year Two Total liabilities Liabilities Units acquired Units Acquired, Value Units Acquired, Value Accrued improvements to real estate Capital Expenditures Incurred but Not yet Paid Maximum borrowing capacity Line of Credit Facility, Maximum Borrowing Capacity Shares of common stock sold under dividend reinvestment plan (in shares) Stock Issued During Period, Shares, Dividend Reinvestment Plan Pension Adjustments Prior Service Cost Pension Adjustments Prior Service Cost [Member] Expenses Operating Expenses [Abstract] Material Terms of Trading Arrangement Material Terms of Trading Arrangement [Text Block] Dividend fee as percent of sale price of real estate Related Party Transaction, Dividend Fee as Percent of Sale Price of Real Estate Related Party Transaction, Dividend Fee as Percent of Sale Price of Real Estate The Almaden The Almaden [Member] The Almaden [Member] Debt Covenant Period Three Debt Covenant Period Three [Member] Debt Covenant Period Three Impairment of Real Estate and Related Intangible Assets and Liabilities Real Estate, Impairments of Real Estate and Related Intangible Assets and Liabilities Policy [Policy Text Block] Real Estate, Impairments of Real Estate and Related Intangible Assets and Liabilities Policy [Policy Text Block] Deed-in-lieu of foreclosure SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation, Deed-In-Lieu Of Foreclosure SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation, Deed-In-Lieu Of Foreclosure Issuance of common stock Issuance of common stock, value Stock Issued During Period, Value, New Issues Statement [Line Items] Statement [Line Items] Variable Rate [Axis] Variable Rate [Axis] Rule 10b5-1 Arrangement Adopted Rule 10b5-1 Arrangement Adopted [Flag] Cash and cash equivalents Cash and Cash Equivalent Counterparty Name [Axis] Counterparty Name [Axis] Subsequent Event [Line Items] Subsequent Event [Line Items] Common Stock Common Stock [Member] Entity Incorporation, State or Country Code Entity Incorporation, State or Country Code Non-NEOs Non-NEOs [Member] Development management fee as percent of total project cost Related Party Transaction, Development Management Fee as Percent of Total Project Cost Related Party Transaction, Development Management Fee as Percent of Total Project Cost Less accumulated depreciation and amortization Accumulated depreciation and amortization Real Estate Investment Property, Accumulated Depreciation Net increase (decrease) in cash, cash equivalents and restricted cash Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Period Increase (Decrease), Including Exchange Rate Effect and Discontinued Operation