Dividends Payable [Line Items] Dividends Payable [Line Items] Land Land [Member] Significant Unobservable Inputs (Level 3) Fair Value, Inputs, Level 3 [Member] Credit facility, Fifth Amended and Restated Senior Credit Agreement Revolving Credit Facility, Fifth Amended and Restated Senior Credit Agreement [Member] Revolving Credit Facility, Fifth Amended and Restated Senior Credit Agreement [Member] Amount of gain reclassified from AOCI into interest expense (effective portion) Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), Reclassification, before Tax Credit facility Credit facility, amount outstanding Long-term Line of Credit Real Estate [Domain] Real Estate [Domain] Stock-based compensation APIC, Share-based Payment Arrangement, Increase for Cost Recognition 2022 Long-term Debt, Maturities, Repayments of Principal in Year Four Maturities of Long-term Debt [Abstract] Maturities of Long-term Debt [Abstract] Mortgage Loan Payable Mortgages [Member] Capitalized interest associated with redevelopment activities Interest Costs Capitalized Real estate one Real Estate One [Member] Real Estate One [Member] Property, Plant and Equipment, Type [Axis] Property, Plant and Equipment, Type [Axis] Payments on credit facility Repayments of Lines of Credit Granted (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period October 2027 senior unsecured notes October2027 Senior Unsecured Notes [Member] October 2027 Senior Unsecured Notes [Member] Vested (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period Depreciation and amortization Disposal Group, Including Discontinued Operation, Depreciation and Amortization Current Fiscal Year End Date Current Fiscal Year End Date Issuance of common stock Net proceeds of common share issuance Proceeds from Issuance of Common Stock Thereafter Lessor, Operating Lease, Payments to be Received, Thereafter Total revenues Revenues Revenues Interest rate cap, Maturity 2/3/2020 Interest Rate Cap3 [Member] Interest Rate Cap 3 [Member] Derivative [Line Items] Derivative [Line Items] Collateral [Axis] Collateral [Axis] DILUTED WEIGHTED AVERAGE COMMON SHARES OUTSTANDING (in shares) Weighted Average Number of Shares Outstanding, Diluted Entity Address, Postal Zip Code Entity Address, Postal Zip Code Finite-lived intangible assets acquired Finite-lived Intangible Assets Acquired Issuance of common stock, net of issuance costs Stock Issued During Period, Value, New Issues Credit facility, maximum Line of Credit Facility, Maximum Borrowing Capacity Asset acquisition, consideration transferred Asset Acquisition, Consideration Transferred Asset Acquisition, Consideration Transferred London Interbank Offered Rate (LIBOR) London Interbank Offered Rate (LIBOR) [Member] Accumulated Other Comprehensive Loss AOCI Attributable to Parent [Member] Basis spread on variable rate Debt Instrument, Basis Spread on Variable Rate Total assets Assets Real estate Real Estate [Member] Term loans payable, net Loans Payable Entity Shell Company Entity Shell Company Cover [Abstract] Document Type Document Type Weighted average fixed annual rate Weighted average interest rate Debt, Weighted Average Interest Rate Subsequent event Subsequent Event [Member] Schedule of certain information with respect to the Performance Share awards Share-based Payment Arrangement, Performance Shares, Outstanding Activity1 [Table Text Block] Share-based Payment Arrangement, Performance Shares, Outstanding Activity1 Variable Rate [Domain] Variable Rate [Domain] Total investments in properties Real Estate Investment Property, at Cost Estimate that will be reclassified from AOCI as an increase to interest expense over the next twelve months Derivative Instruments, Gain (Loss) Reclassification from Accumulated OCI to Income, Estimated Net Amount to be Transferred Total net investment book value of properties securing the debt Investment Under Secured Debt Book Value Net Investment under secured debt book value net. Repurchased shares of stock pursuant to share repurchase authorization (in shares) Treasury Stock, Shares, Acquired Derivative Instruments and Hedging Activities Disclosure [Abstract] Derivative Instruments and Hedging Activities Disclosure [Abstract] Asset acquisition, property additions Property, Plant and Equipment, Additions Restricted stock Restricted Stock [Member] Number of mortgage loans payable Number of Mortgage Loans Number of Mortgage Loans Lease liability arising from recognition of right-of-use asset Right-of-Use Asset Obtained in Exchange for Operating Lease Liability Credit Facility [Axis] Credit Facility [Axis] Property, Plant and Equipment, Type [Domain] Property, Plant and Equipment, Type [Domain] Forfeited (in dollars per share) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeitures, Weighted Average Grant Date Fair Value Asset Acquisition [Axis] Asset Acquisition [Axis] Asset Acquisition [Axis] Payments on senior secured loan Proceeds from Collection of Loans Receivable Equity Equity [Abstract] Equity [Abstract] Document Quarterly Report Document Quarterly Report Commitments and contingencies (Note 13) Commitments and Contingencies Percentage of annualized base rent Lessor, Operating Leases, Payments, Requests for Deferral Or Abatement, Rescinded, Percentage Of Annualized Base Rent Lessor, Operating Leases, Payments, Requests for Deferral Or Abatement, Rescinded, Percentage Of Annualized Base Rent Long-term Debt, Type [Domain] Long-term Debt, Type [Domain] Below-market lease, accumulated amortization Below Market Lease, Accumulated Amortization Cash and cash equivalents and restricted cash at beginning of period Cash and cash equivalents and restricted cash at end of period Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents January 2022 term loan January2022 Term Loan [Member] January 2022 Term Loan [Member] Debt Instrument [Line Items] Debt Instrument [Line Items] 2020 (9 months) Lessor, Operating Lease, Payments to be Received, Remainder of Fiscal Year Schedule Of Investment In Properties [Table] Schedule Of Investment In Properties [Table] Schedule Of Investment In Properties [Table] Cash and Cash Equivalents Cash and Cash Equivalents, Policy [Policy Text Block] Disposal Group Classification [Axis] Disposal Group Classification [Axis] Property operating expenses Disposal Group, Including Discontinued Operation, Operating Expense Risks and Uncertainties [Abstract] Risks and Uncertainties [Abstract] Proceeds from sales of real estate investments, net Proceeds from Sale of Real Estate Held-for-investment Issuance of restricted stock (in shares) Stock Issued During Period, Shares, Restricted Stock Award, Gross Other Commitments [Line Items] Other Commitments [Line Items] 2024 Lessor, Operating Lease, Payments to be Received, Five Years Real Estate [Table] Real Estate [Table] Entity File Number Entity File Number Vesting period for the restricted stock Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period Held For Sale/Disposed Assets [Abstract] Held For Sale/Disposed Assets [Abstract] Held For Sale Assets [Abstract] EARNINGS PER COMMON SHARE - BASIC AND DILUTED: Earnings Per Share, Basic and Diluted [Abstract] 2020 (9 months) Within One Year [Member] Within one year. 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Fair Value Disclosures [Abstract] Fair Value Disclosures [Abstract] Net income available to common stockholders - basic (in dollars per share) Earnings Per Share, Basic Common stock dividend (in dollars per share) Dividend per share, common stock (in dollars per share) Common Stock, Dividends, Per Share, Declared October 2022 unsecured revolving credit facility October 2022 Unsecured Revolving Credit Facility [Member] October 2022 Unsecured Revolving Credit Facility [Member] Comprehensive income Comprehensive Income (Loss), Net of Tax, Attributable to Parent Plan Name [Axis] Plan Name [Axis] Subsequent Event Type [Axis] Subsequent Event Type [Axis] Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table] Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table] Significant Accounting Policies Statement [Table] Significant Accounting Policies Statement [Table] Significant Accounting Policies Statement [Table] Lessor, 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Income (Expense) Debt Long-term Debt [Text Block] Other assets, net Other Assets Number of deferral and abatement requests rescinded Lessor, Operating Lease, Number Of Lessees Requesting Deferral Or Abatement Rescinded Lessor, Operating Lease, Number Of Lessees Requesting Deferral Or Abatement Rescinded Assumed debt Asset Acquisition, Contractual Commitment, Financial Liabilities Asset Acquisition, Contractual Commitment, Financial Liabilities Schedule of intangible assets and liabilities Schedule of Finite-Lived Intangible Assets And Liabilities [Table Text Block] Schedule of Finite-Lived Intangible Assets And Liabilities [Table Text Block] Debt Instrument, Name [Domain] Debt Instrument, Name [Domain] Disposed Assets Disposed Assets [Member] Disposed Assets Performance measurement period Performance Measurement Period Performance Measurement Period Entity Current Reporting Status Entity Current Reporting Status Non-cash repayment of senior secured loan Noncash Repayment Of Senior 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Instrument [Axis] Share-based Compensation Arrangement by Share-based Payment Award [Line Items] Share-based Compensation Arrangement by Share-based Payment Award [Line Items] Percentage accounted by properties of its annualized base rent Percentage Accounted by Properties of its Annualized Base Rent Percentage accounted by properties of its annualized base rent. Deferred financing cost amortization Amortization of Debt Issuance Costs and Discounts Deferrals granted, percentage of annualized base rent. Operating Lease, Lease Income, Payments, Requests For Deferral Approved, Percentage Of Annualized Base Rent Operating Lease, Lease Income, Payments, Requests For Deferral Approved, Percentage Of Annualized Base Rent Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] Schedule of total restricted shares granted Share-based Payment Arrangement, Restricted Stock and Restricted Stock Unit, Activity [Table Text Block] Entity Small Business Entity Small Business Major Property Class [Domain] Major Property Class [Domain] Income from operations Disposal Group, Including Discontinued Operation, Operating Income (Loss) Commitments and Contingencies Disclosure [Abstract] Commitments and Contingencies Disclosure [Abstract] Real Estate [Abstract] Real Estate [Abstract] Major Property Class [Axis] Major Property Class [Axis] Entity Filer Category Entity Filer Category Fair Value of Financial Instruments Fair Value of Financial Instruments, Policy [Policy Text Block] Compensation costs Expense Share-based Payment Arrangement, Expense Total liabilities and equity Liabilities and Equity Entity Address, City or Town Entity Address, City or Town Common Shares Held in Deferred Compensation Plan Common Stock Held At Rabbi Trust [Member] Common Stock Held At Rabbi Trust Schedule of effects of derivative financial instruments on consolidated statements of operations Derivative Instruments, Gain (Loss) [Table Text Block] Building and Building Improvements Building and Building Improvements [Member] Receivable Type [Axis] Receivable Type [Axis] Dividends payable Dividends Payable Percentage of requests denied by dollar amount Lessor, Operating Leases, Payments, Percentage Of Deferral Requests Denied, By Total Dollar Amount Lessor, Operating Leases, Payments, Percentage Of Deferral Requests Denied, By Total Dollar Amount COSTS AND EXPENSES Operating Expenses [Abstract] Straight-line rent and accounts receivables, net of allowances Straight Line Rent And Accounts Receivables Net Of Allowances Straight Line Rent And Accounts Receivables Net Of Allowances Preferred stock, authorized (in shares) Preferred Stock, Shares Authorized Schedule of Long-term Debt Instruments [Table] Schedule of Long-term Debt Instruments [Table] Credit facility, current Line of Credit Facility, Current Borrowing Capacity Net investments in properties Real Estate Investment Property, Net Performance share awards payable Deferred Compensation Liability, Current and Noncurrent Stockholders’ equity Stockholders' Equity Attributable to Parent [Abstract] Document Fiscal Year Focus Document Fiscal Year Focus Tenant's request denied, percentage of annualized base rent Lessor, Operating Leases, Payments, Requests for Deferral Or Abatement Denied, Percentage Of Annualized Base Rent Lessor, Operating Leases, Payments, Requests for Deferral Or Abatement Denied, Percentage Of Annualized Base Rent Industrial building Industrial Property [Member] Issuance costs on issuance of common stock Issuance Costs on Issuance of Common Stock Issuance costs on issuance of common stock. Miami Miami [Member] Miami. Property operating expenses Operating Lease, Initial Direct Cost Expense, over Term Schedule of carrying value and fair value of senior secured loan and debt Fair Value, by Balance Sheet Grouping [Table Text Block] Subsequent Events Subsequent Events [Text Block] REVENUES Revenues [Abstract] Schedule of principal payments Schedule of Debt [Table Text Block] 2019 Plan 2019 Plan [Member] 2019 Plan [Member] Thereafter Long-term Debt, Maturities, Repayments of Principal after Year Five Concentration of Credit Risk Concentration Risk Disclosure [Text Block] Payments on mortgage loans payable Repayments of Secured Debt Thereafter After five years [Member] After five years [Member] Award Type [Axis] Award Type [Axis] Fair Value Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Fair Value Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Fair Value Revenues Disposal Group, Including Discontinued Operation, Rental Income Common stock dividends Dividends, Common Stock, Cash Impairment Impairment or Disposal of Long-Lived Assets, Including Intangible Assets, Policy [Policy Text Block] Dividends Payable [Table] Dividends Payable [Table] Subsequent Events [Abstract] Subsequent Events [Abstract] Fair Value, by Balance Sheet Grouping [Table] Fair Value, by Balance Sheet Grouping [Table] Accumulated other comprehensive loss Accumulated Other Comprehensive Income (Loss), Net of Tax Fair value of the restricted stock granted Share Based Compensation Arrangement by Share Based Payment Award Equity Instruments other than Options Grants Intrinsic Value Share based compensation arrangement by share based payment award equity instruments other than options grants in period intrinsic value. Total Finite-Lived Intangible Assets (Liabilities), Net Finite-Lived Intangible Assets (Liabilities), Net Repurchase and cancellation of common stock related to employee awards Stock Repurchased During Period, Value Geographical [Axis] Geographical [Axis] Number of properties Number of Buildings Number of Real Estate Properties Retained Earnings Retained Earnings [Member] Number of deferrals granted Lessor, Operating Lease, Lessee, Number of Lessee Deferrals Granted Lessor, Operating Lease, Lessee, Number of Lessee Deferrals Granted Additions to construction in progress Payments for Construction in Process Subsequent Event Type [Domain] Subsequent Event Type [Domain] Percentage of annualized base rent Lessor, Operating Leases, Payments, Requests for Deferral Or Abatement, In Discussion, Percentage Of Annualized Base Rent Lessor, Operating Leases, Payments, Requests for Deferral Or Abatement, In Discussion, Percentage Of Annualized Base Rent Subsequent Event [Line Items] Subsequent Event [Line Items] Shares held in rabbi trust Common Stock, Shares Held in Employee Trust, Shares July 2024 senior unsecured notes July2024 Senior Unsecured Notes [Member] July 2024 Senior Unsecured Notes [Member] Accounts payable related to capital improvements Capital Expenditures Incurred but Not yet Paid Significant Accounting Policies Statement [Line Items] Significant Accounting Policies Statement [Line Items] Significant Accounting Policies Statement [Line Items] Liabilities Liabilities [Abstract] Document Period End Date Document Period End Date Depreciation and Useful Lives of Real Estate and Intangible Assets Depreciation, Depletion, and Amortization [Policy Text Block] Statement [Table] Statement [Table] Interest rate cap Interest Rate Cap [Member] Entity Registrant Name Entity Registrant Name Common stock aggregate offering price Common Stock Aggregate Offering Price Common Stock Aggregate Offering Price Standard depreciable life Property, Plant and Equipment, Useful Life Schedule of depreciation and useful lives of real estate and intangible assets Schedule Of Depreciation And Useful Lives Of Real Estate And Intangible Assets [Table Text Block] Schedule Of Depreciation And Useful Lives Of Real Estate And Intangible Assets [Table Text Block] Accrual Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period, Fair Value CASH FLOWS FROM INVESTING ACTIVITIES Net Cash Provided by (Used in) Investing Activities [Abstract] Maximum Maximum [Member] Senior Secured Loan Loans, Notes, Trade and Other Receivables Disclosure [Text Block] 2023 Year Four [Member] Year four. Receivables [Abstract] Receivables [Abstract] Vesting schedule of the total non-vested shares of restricted stock outstanding Schedule of Nonvested Restricted Stock Units Activity [Table Text Block] Building Improvements Building Improvements [Member] Net income available to common stockholders Net Income (Loss) Available to Common Stockholders, Basic Above-market leases Above Market Leases [Member] Shares issued, price per share (in dollars per share) Shares Issued, Price Per Share Mortgage loans payable, net Secured Debt Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] Retained (deficit) earnings Retained Earnings (Accumulated Deficit) Repurchase of common stock Payments for Repurchase of Common Stock Loan, stated interest rate Loans and Leases Receivable, Stated Interest Rate Loans and Leases Receivable, Stated Interest Rate Below-market leases, gross Below Market Lease, Gross Entity Tax Identification Number Entity Tax Identification Number Other Commitments [Domain] Other Commitments [Domain] Number of tenants requesting deferral or abatement Lessor, Operating Lease, Number of Lessees Requesting Rent Deferral Lessor, Operating Lease, Number of Lessees Requesting Rent Deferral Debt instrument, face amount Debt Instrument, Face Amount Net income available to common stockholders - diluted (in dollars per share) Earnings Per Share, Diluted Number of reportable segments Number of Reportable Segments Long Term Incentive Plan Long Term Incentive Plan [Member] Long-term incentive plan. Trading Symbol Trading Symbol Minimum Minimum [Member] Sales price of property currently for sale Disposal Group, Including Discontinued Operation, Agreement To Sell, Consideration Disposal Group, Including Discontinued Operation, Agreement To Sell, Consideration Schedule of cash and cash equivalents and restricted cash Restrictions on Cash and Cash Equivalents [Table Text Block] Allocation to participating securities Undistributed Earnings (Loss) Allocated to Participating Securities, Basic Statistical Measurement [Domain] Statistical Measurement [Domain] Adjustments to reconcile net income to net cash provided by operating activities Adjustments to Reconcile Net Income (Loss) to Cash Provided by (Used in) Operating Activities [Abstract] Number of tenant leases Lessor, Operating Lease, Number of Lessees Lessor, Operating Lease, Number of Lessees Amount of gain recognized in AOCI on derivatives (effective portion) Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), before Reclassification and Tax Asset Acquisitions 2020 Asset Acquisitions 2020 [Member] Asset Acquisitions 2020 Net cash (used in) provided by financing activities Net Cash Provided by (Used in) Financing Activities Additions to buildings, improvements and leasing costs Payments to Acquire Other Property, Plant, and Equipment Held For Sale Assets [Table] Held For Sale Assets [Table] Held For Sale Assets [Table] Vesting [Axis] Vesting [Axis] 2023 Lessor, Operating Lease, Payments to be Received, Four Years Asset Acquisitions 2019 Asset Acquisitions 2019 [Member] Asset Acquisitions 2019 [Member] Deferred Compensation Plan Deferred Compensation Plan [Member] Deferred Compensation Plan Credit facility, previous agreement Revolving Credit Facility, Previous Agreement [Member] Revolving Credit Facility, Previous Agreement [Member] Percentage granted by number Lessor, Operating Leases, Payments, Percentage Of Deferral Requests Approved, By Number Of Lessees Requesting Deferral Or Abatement Lessor, Operating Leases, Payments, Percentage Of Deferral Requests Approved, By Number Of Lessees Requesting Deferral Or Abatement Other Commitments [Table] Other Commitments [Table] Deferred financing cost accumulated amortization Accumulated Amortization, Debt Issuance Costs City Area Code City Area Code In-place leases Leases, Acquired-in-Place [Member] Title of 12(b) Security Title of 12(b) Security Washington D.C. Washington D.c. [Member] Washington D.C. [Member] Amended LTIP Amended LTIP [Member] Amended LTIP Held For Sale Assets [Line Items] Held For Sale Assets [Line Items] Held For Sale Assets [Line Items] San Francisco Bay Area San Francisco Bay Area [Member] San Francisco bay area. Earnings Per Share [Abstract] Earnings Per Share [Abstract] Fair Value Hierarchy and NAV [Axis] Fair Value Hierarchy and NAV [Axis] Number of tenant's deferral requests denied Lessor, Operating Lease, Number Of Lessees Requesting Deferral Or Abatement Denied Lessor, Operating Lease, Number Of Lessees Requesting Deferral Or Abatement Denied Use of Derivative Financial Instruments Derivatives, Reporting of Derivative Activity [Policy Text Block] Grant date fair value per share of restricted stock awards (in dollars per share) Granted (in dollars per share) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value Award Date [Axis] Award Date [Axis] Interest and other income Interest and Other Income Total debt Long-term Debt, Gross ASSETS Assets [Abstract] Preferred stock, par value (in dollars per share) Preferred Stock, Par or Stated Value Per Share Property Acquisitions Business Combinations Policy [Policy Text Block] Schedule of Accounts, Notes, Loans and Financing Receivable [Table] Schedule of Accounts, Notes, Loans and Financing Receivable [Table] Asset acquisition, intangible liabilities Asset Acquisition, Intangible Liabilities Asset Acquisition, Intangible Liabilities Schedule of cash dividends paid or payable per share Schedule of Dividends Payable [Table Text Block] CASH FLOWS FROM OPERATING ACTIVITIES Net Cash Provided by (Used in) Operating Activities [Abstract] Rental revenues and tenant expense reimbursements Operating Lease, Lease Income Performance Shares Performance Shares [Member] $250 Million ATM Program At Market Equity Offering Program 250 Million [Member] At Market Equity Offering Program 250 Million [Member] Term loan Term Loan Term Loan [Member] Term Loan [Member] OTHER INCOME (EXPENSE) Nonoperating Income (Expense) [Abstract] Redevelopment property Redevelopment Property [Member] Redevelopment Property [Member] Held for Sale/Disposed Assets Real Estate Assets Held For Sale [Text Block] Real Estate Assets Held For Sale [Text Block] Common stock held in rabbi trust (in shares) Common Stock Held in Trust, Shares Common Stock Held in Trust, Shares Office building Office Building [Member] Supplemental disclosures of non-cash transactions Cash Flow, Noncash Investing and Financing Activities Disclosure [Abstract] January 1, 2018 - December 31, 2020 Performance Shares Period1 [Member] Performance Shares Period 1 [Member] Finite-lived intangible assets, net Finite-Lived Intangible Assets, Net Loans Held-for-Investment Finance, Loan and Lease Receivables, Held-for-investment, Allowance and Nonperforming Loans, Policy [Policy Text Block] Depreciation and amortization Depreciation, Depletion and Amortization, Nonproduction Asset acquisition, real estate development costs Asset Acquisition, Consideration Transferred, Real Estate Redevelopment Costs Asset Acquisition, Consideration Transferred, Real Estate Redevelopment Costs Common stock aggregate offering price, remaining Common Stock Aggregate Offering Price, Remaining Common Stock Aggregate Offering Price, Remaining Debt Disclosure [Abstract] Debt Disclosure [Abstract] 2022 Year Three [Member] Year three. Derivative Instrument [Axis] Derivative Instrument [Axis] Schedule of cash and cash equivalents and restricted cash Schedule of Cash and Cash Equivalents [Table Text Block] Increase (Decrease) in Stockholders' Equity [Roll Forward] Increase (Decrease) in Stockholders' Equity [Roll Forward] Statistical Measurement [Axis] Statistical Measurement [Axis] SUPPLEMENTAL DISCLOSURES OF CASH FLOW INFORMATION Supplemental Cash Flow Information [Abstract] Percentage of requests by number Lessor, Operating Leases, Payments, Percentage Of Deferral Requests Rescinded, By Number Of Lessees Requesting Deferral Or Abatement Lessor, Operating Leases, Payments, Percentage Of Deferral Requests Rescinded, By Number Of Lessees Requesting Deferral Or Abatement Interest rate cap, Maturity 4/1/2019 Interest Rate Cap2 [Member] Interest Rate Cap 2 [Member] Basis of Presentation Basis of Accounting, Policy [Policy Text Block] COVID-19 COVID-19 [Member] COVID-19 July 2026 senior unsecured notes July2026 Senior Unsecured Notes [Member] July 2026 Senior Unsecured Notes [Member] Statement of Financial Position [Abstract] Statement of Financial Position [Abstract] Interest rate cap notional value Derivative, Notional Amount Revenue Recognition Revenue from Contract with Customer [Policy Text Block] Repurchase and cancellation of common stock related to employee awards (in shares) Stock Repurchased During Period, Shares 2021 Long-term Debt, Maturities, Repayments of Principal in Year Three Schedule of Real Estate Properties [Table] Schedule of Real Estate Properties [Table] Schedule of Finite-Lived Intangible Assets [Table] Schedule of Finite-Lived Intangible Assets [Table] Number of properties acquired Number Of Real Estate Properties, Acquired Number of real estate properties acquired, during period. Common stock, shares authorized (in shares) Common Stock, Shares Authorized Finite-lived intangible assets, accumulated amortization Finite-Lived Intangible Assets, Accumulated Amortization Statement of Cash Flows [Abstract] Statement of Cash Flows [Abstract] Entity Central Index Key Entity Central Index Key Non-vested shares outstanding at beginning of period (in shares) Non-vested shares outstanding at end of period (in shares) Total non-vested shares (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number Entity Emerging Growth Company Entity Emerging Growth Company 2023 Long-term Debt, Maturities, Repayments of Principal in Year Five Senior unsecured notes Senior Unsecured Notes Senior Notes [Member] Sale of Stock [Domain] Sale of Stock [Domain] Unencumbered properties, percent Line of Credit Facility, Unencumbered Properties Line of Credit Facility, Unencumbered Properties Stock-based compensation Share-based Payment Arrangement, Noncash Expense Borrowings on credit facility Proceeds from Lines of Credit Derivative Financial Instruments Derivative Instruments and Hedging Activities Disclosure [Text Block] Derivative [Table] Derivative [Table] Assets Assets, Fair Value Disclosure [Abstract] Income Taxes Income Tax, Policy [Policy Text Block] Issuance costs Payments of Stock Issuance Costs Credit Facility [Domain] Credit Facility [Domain] Significant Other Observable Inputs (Level 2) Fair Value, Inputs, Level 2 [Member] Building Building [Member] Disposal Group Name [Domain] Disposal Group Name [Domain] Acquisition of properties Reconciliation Acquisition Of Properties Acquisition Of Properties January 1, 2020 - December 31, 2022 Performance Shares Period4 [Member] Performance Shares Period4 [Member] 2021 Year Two [Member] Year two. Sales price, book value Disposal Group, Including Discontinued Operation, Agreement To Sell, Consideration, Carrying Value Disposal Group, Including Discontinued Operation, Agreement To Sell, Consideration, Carrying Value Credit facility, facility fee, percent Line of Credit Facility, Commitment Fee Percentage Northern New Jersey/New York City Northern New Jersey And New York [Member] Northern New Jersey and New York. LIABILITIES AND EQUITY Liabilities and Equity [Abstract] Total Lessor, Operating Lease, Payments to be Received Deferred Compensation Plan Deferred Compensation, Share-based Payments [Member] Area of real estate property acquired Area Of Real Estate Property Acquired Area of real estate property acquired, during period. 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DISTRICT OF COLUMBIA Number of interest rate cap transactions Number of Interest Rate Derivatives Held Accounting Policies [Abstract] Accounting Policies [Abstract] Additional Paid- in Capital Additional Paid-in Capital [Member] Total compensation to the applicable sales agents Fees And Commissions At Market Equity Offering Program Sales Agent Fees And Commissions At Market Equity Offering Program Sales Agent Disposal Group Name [Axis] Disposal Group Name [Axis] Receivable [Domain] Receivable [Domain] Stock-Based Compensation and Other Long-Term Incentive Compensation Share-based Payment Arrangement [Policy Text Block] Real estate investment Real Estate Investment [Member] Loan outstanding, net of deferred income Loans and Leases Receivable, Net of Deferred Income Senior Secured Loan Receivable Loans Receivable [Member] January 1, 2019 - December 31, 2021 Performance Shares Period3 [Member] Performance Shares Period 3 [Member] 2020 Long-term Debt, Maturities, Repayments of Principal in Year Two Entity Address, Address Line One Entity Address, Address Line One Entity Address, Address Line Two Entity Address, Address Line Two Finite-Lived Intangible Assets by Major Class [Axis] Finite-Lived Intangible Assets by Major Class [Axis] Held for sale Disposal Group, Held-for-sale, Not Discontinued Operations [Member] Geographical [Domain] Geographical [Domain] Total Fair Value Loans Receivable, Fair Value Disclosure Entity Address, State or Province Entity Address, State or Province Gain on sales of real estate investments Gain (Loss) on Sale of Properties, Net of Applicable Income Taxes Net cash used in investing activities Net Cash Provided by (Used in) Investing Activities Remaining balance of shares available (in shares) Common Stock, Shares Authorized, Remaining Common Stock, Shares Authorized, Remaining Fair Value, Recurring and Nonrecurring [Table] Fair Value, Recurring and Nonrecurring [Table] Area of real estate property Area of Real Estate Property Accounts payable and other liabilities Accounts Payable, Other General and administrative General and Administrative Expense Schedule of derivative instruments designated as hedging instruments Schedule of Derivative Instruments [Table Text Block] Finite-lived intangible assets (liabilities), accumulated amortization Finite-Lived Intangible Assets (Liabilities), Accumulated Amortization Finite-Lived Intangible Assets (Liabilities), Accumulated Amortization Amortization of lease intangibles Amortization of Lease Intangibles Amortization of lease intangibles. Credit Facility Credit Facility [Member] Credit facility. Significant Accounting Policies Significant Accounting Policies [Text Block] Entity Interactive Data Current Entity Interactive Data Current Common stock, shares issued (in shares) Common Stock, Shares, Issued Entity Common Stock, Shares Outstanding Entity Common Stock, Shares Outstanding Total costs and expenses Costs and Expenses Common stock, par value (in dollars per share) Common Stock, Par or Stated Value Per Share Percentage of tenants requesting deferral or abatement Lessor, Operating Lease, Percentage Of Lessees Requesting Rent Deferral or Abatement Lessor, Operating Lease, Percentage Of Lessees Requesting Rent Deferral or Abatement Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] Impairment charges Asset Impairment Charges Non-vested shares outstanding at beginning of period (in dollars per share) Non-vested shares outstanding at end of period (in dollars per share) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value Los Angeles Los Angeles [Member] Los Angeles. Entity Incorporation, State or Country Code Entity Incorporation, State or Country Code Unusual Risk or Uncertainty, Nature [Domain] Unusual Risk or Uncertainty, Nature [Domain] Percentage of requests denied by number Lessor, Operating Leases, Payments, Percentage Of Deferral Requests Denied, By Number Of Lessees Requesting Deferral Or Abatement Lessor, Operating Leases, Payments, Percentage Of Deferral Requests Denied, By Number Of Lessees Requesting Deferral Or Abatement Percentage of total dollar requests Lessor, Operating Lease, Lessee, Percentage Of Deferrals Granted Lessor, Operating Lease, Lessee, Percentage Of Deferrals Granted August 2020 Unsecured Revolving Credit Facility August2020 Unsecured Revolving Credit Facility [Member] August 2020 Unsecured Revolving Credit Facility [Member] Buildings and improvements Buildings and Improvements, Gross Net Income (Loss) Per Share Earnings Per Share [Text Block] Award Type [Domain] Award Type [Domain] Straight-line rents Straight Line Rent Other assets Increase (Decrease) in Other Operating Assets Commitments and Contingencies Commitments and Contingencies Disclosure [Text Block] Credit facility Revolving Credit Facility [Member] Weighted average offering price per share (in dollars per share) Share-based Compensation Arrangements by Share-based Payment Award, Options, Grants in Period, Weighted Average Exercise Price Interest rate cap, Maturity 5/4/2021 Interest Rate Cap1 [Member] Interest Rate Cap 1 [Member] Issuance of common stock, net of issuance costs (in shares) Stock Issued During Period, Shares, New Issues Remaining weighted average period Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Exercisable, Weighted Average Remaining Contractual Term Dividends paid to common stockholders Payments of Ordinary Dividends, Common Stock Gain on sales of real estate investments Gain (Loss) on Sale of Properties $300 Million ATM Program At Market Equity Offering Program 300 Million [Member] At Market Equity Offering Program 300 Million [Member] Total Fair Value Long-term Debt, Fair Value Unusual Risk or Uncertainty, Nature [Axis] Unusual Risk or Uncertainty, Nature [Axis] Summary of results of operations of property held for sale Disposal Groups, Including Discontinued Operations [Table Text Block] Asset Acquisition [Domain] Asset Acquisition [Domain] [Domain] for Asset Acquisition [Axis] Investments [Domain] Investments [Domain] Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] Total liabilities Liabilities Number of markets Number Of Major Coastal Domestic Markets Number Of Major Coastal Domestic Markets Security deposits Security Deposit Liability Common stock: $0.01 par value, 400,000,000 shares authorized, and 67,695,805 and 67,252,787 shares issued and outstanding, respectively Common Stock, Value, Issued Schedule of certain information with respect to the Performance Share awards Share-based Payment Arrangement, Performance Shares, Outstanding Activity [Table Text Block] Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents [Abstract] Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents [Abstract] Real Estate, Type of Property [Axis] Real Estate, Type of Property [Axis] Percentage by number Lessor, Operating Leases, Payments, Percentage Of Deferral Requests, In Discussions, By Number Of Lessees Requesting Deferral Or Abatement Lessor, Operating Leases, Payments, Percentage Of Deferral Requests, In Discussions, By Number Of Lessees Requesting Deferral Or Abatement January 1, 2017 - December 31, 2019 Performance Shares Period2 [Member] Performance Shares Period 2 [Member] Other Commitments [Axis] Other Commitments [Axis] Vesting [Domain] Vesting [Domain] 2020 (9 months) Long-term Debt, Maturities, Repayments of Principal, Remainder of Fiscal Year Statement of Comprehensive Income [Abstract] Statement of Comprehensive Income [Abstract] Amortization of above and below-market leases Amortization of above and below Market Leases Restricted Cash Cash and Cash Equivalents, Restricted Cash and Cash Equivalents, Policy [Policy Text Block] Collateral [Domain] Collateral [Domain] Cash and cash equivalents Cash and cash equivalents at beginning of period Cash and cash equivalents at end of period Cash and Cash Equivalents, at Carrying Value Intangible liabilities, net Below-market leases, net Below Market Lease, Net September 2022 senior unsecured notes September2022 Senior Unsecured Notes [Member] September 2022 Senior Unsecured Notes [Member] BASIC WEIGHTED AVERAGE COMMON SHARES OUTSTANDING (in shares) Weighted Average Number of Shares Outstanding, Basic Assumption of other assets and liabilities Assumptions Of Other Assets And Liabilities Assumptions Of Other Assets And Liabilities Construction in progress Construction in 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Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeited in Period Land Land Fair Value Measurements Fair Value Disclosures [Text Block] Accumulated depreciation and amortization Real Estate Investment Property, Accumulated Depreciation Secured loan Secured Debt, Current Remaining average lease term related to intangible assets and liabilities Finite-Lived Intangible Assets, Remaining Amortization Period December 2029 Senior Unsecured Notes December 2029 Senior Unsecured Notes [Member] December 2029 Senior Unsecured Notes Disposal Groups, Including Discontinued Operations [Table] Disposal Groups, Including Discontinued Operations [Table] Finite-Lived Intangible Assets [Line Items] Finite-Lived Intangible Assets [Line Items] Investments in Real Estate Real Estate, Policy [Policy Text Block] Investment Type [Axis] Investment Type [Axis] Intangible assets Finite-lived intangible assets, gross Finite-Lived Intangible Assets, Gross Cash paid for interest, net of capitalized interest Interest Paid, Excluding Capitalized Interest, Operating Activities Non-cash issuance of common stock to the deferred compensation plan Stock Issued Straight-line rent and accounts receivable, allowances Accounts Receivable, Allowance for Credit Loss Variable Rate [Axis] Variable Rate [Axis] Security Exchange Name Security Exchange Name Weighted average unvested restricted shares outstanding (in shares) Weighted Average Number of Shares, Restricted Stock Dilutive restricted stock awards outstanding securities not participate in losses (in shares) Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount Disposal Group Classification [Domain] Disposal Group Classification [Domain] Number of tenants in discussions Lessor, Operating Lease, Number Of Lessees Requesting Deferral Or Abatement, In Discussions Lessor, Operating Lease, Number Of Lessees Requesting Deferral Or Abatement, In Discussions Shares repurchase program, authorized repurchase amount (in shares) Stock Repurchase Program, Number of Shares Authorized to be Repurchased Long-term Debt, Type [Axis] Long-term Debt, Type [Axis] Additional paid-in capital Additional Paid in Capital, Common Stock Improved land parcels Land and Land Improvements [Member] Net cash provided by operating activities Net Cash Provided by (Used in) Operating Activities Shares Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward] Derivative, basis spread on variable rate Derivative, Basis Spread on Variable Rate Equity Component [Domain] Equity Component [Domain] Hedging Relationship [Domain] Hedging Relationship [Domain] Document Transition Report Document Transition Report Federal Funds Rate Fed Funds Effective Rate Overnight Index Swap Rate [Member] Cash flow hedging Cash Flow Hedging [Member] Deferred financing costs, net Debt Issuance Costs, Net Deferred Financing Costs Deferred Charges, Policy [Policy Text Block] Senior secured loan, net Loans and Leases Receivable, Net Amount Cash flow hedge adjustment Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), after Reclassification and Tax, Parent Line of credit Line of Credit [Member] Land parcels Land Parcels [Member] Land Parcels [Member] Buildings Buildings [Member] Buildings [Member] Hedging Relationship [Axis] Hedging Relationship [Axis] Income Statement [Abstract] Income Statement [Abstract]