Deferred leasing costs, accumulated amortization Deferred leasing costs, accumulated amortization Finite-Lived Intangible Assets, Accumulated Amortization Tampa, FL - Lakeside [Member] Tampa, FL - Lakeside [Member] Tampa, FL - Lakeside [Member] Granite Properties [Member] Investment Partner 2 [Member] Investment Partner 2 Award Timing Predetermined Award Timing Predetermined [Flag] Earnings per Common Unit - diluted: Net Income (Loss), Net of Tax, Per Outstanding Limited Partnership Unit, Diluted [Abstract] Maturity of highly liquid investments (in months) Maximum original maturity of liquid investments classified as cash Period of maximum original maturity of highly liquid investments classified as cash equivalents, disclosed in months. Entity File Number Entity File Number Additional Paid-In Capital [Member] Additional Paid-in Capital [Member] Raleigh, NC - Other Property [Member] Raleigh, NC - Other Property [Member] Raleigh, NC - Other Property [Member] Tabular List, Table Tabular List [Table Text Block] Raleigh, NC - 751 Corporate Center [Member] Raleigh, NC - 751 Corporate Center [Member] Raleigh, NC - 751 Corporate Center [Member] Raleigh, NC - GlenLake Six [Member] Raleigh, NC - GlenLake Six [Member] Raleigh, NC - GlenLake Six [Member] Assets and liabilities of consolidated variable interest entity [Abstract] Variable Interest Entity, Consolidated, Carrying Amount, Assets and Liabilities, Net [Abstract] Variable Interest Entity, Consolidated, Carrying Amount, Assets and Liabilities, Net Recently Issued Accounting Standards New Accounting Pronouncements, Policy [Policy Text Block] Charlotte, NC - 1426 S. Tryon - Land [Member] Charlotte, NC - 1426 S. Tryon - Land [Member] Charlotte, NC - 1426 S. Tryon - Land Nashville, TN - Broadway Stem - Land [Member] Nashville, TN - Broadway Stem - Land [Member] Nashville, TN - Broadway Stem - Land Tampa, FL - Lakeside/Parkside Garage [Member] Tampa, FL - Lakeside Parkside Garage [Member] Tampa, FL - Lakeside Parkside Garage [Member] Richmond, VA - North Shore Commons II [Member] Richmond, VA - North Shore Commons B - Land [Member] Richmond, VA - North Shore Commons B - Land [Member] Adjustment to Compensation: Adjustment to Compensation [Axis] Building and tenant improvements Disposal Group Including Discontinued Operations Building And Tenant Improvements For the disposal group, including a component of the entity (discontinued operation), represents a total which includes the following: (1) aggregate of the carrying amounts as of the balance sheet date of investments in building and building improvements; and (2) carrying amount as of the balance sheet date of improvements having a life longer than one year that were made for the benefit of one or more tenants. Named Executive Officers, Footnote Named Executive Officers, Footnote [Text Block] Dividends on Preferred Stock Payments of Ordinary Dividends, Preferred Stock and Preference Stock Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Building and Improvements, Amount Impairment key assumption (in hundredths) Impairment Key Assumption Key assumption used in an impairment calculation. Stock, Class of Stock [Table] Stock, Class of Stock [Table] Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land Carrying amount as of the balance sheet date of improvements made to land after acquisition. Shares of Common Stock issued under the employee stock purchase plans Stock Issued During Period, Shares, Employee Stock Purchase Plans Adjustment to Compensation, Amount Adjustment to Compensation Amount Measurement Input, Cap Rate [Member] Measurement Input, Cap Rate [Member] SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost [Abstract] SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost [Abstract] Real Estate and Related Assets Real Estate and Related Assets [Policy Text Block] Disclosure of accounting policy for real estate investment property at cost and deferred charges in the preparation of financial statements in conformity with generally accepted accounting principles. Contributions from noncontrolling interests in consolidated affiliates Proceeds from Contributions from Affiliates Costs paid for the issuance of Common Units Costs Paid For Issuance Of Common Units The cost incurred directly with the issuance of Common Units. Share-based compensation expense Stock-based compensation expense Share-Based Payment Arrangement, Noncash Expense 7.29% Mortgage Loan due 2028 [Member] 7.29% Mortgage Loan due 2028 [Member] 7.29% Mortgage Loan due 2028 Stock Options [Member] Share-Based Payment Arrangement, Option [Member] Property, Plant and Equipment [Table] Property, Plant and Equipment [Table] Audit Information [Abstract] Audit Information [Abstract] Contingent Consideration [Abstract] Contingent Consideration [Abstract] Contingent Consideration [Abstract] Mortgages and notes receivable Financing Receivable, after Allowance for Credit Loss Lender covenant compliance to accelerate outstanding borrowings Debt Instrument Covenant Compliance Percentage Of Lenders In Revolving Credit Facility Percentage of lenders in credit facility needed to accelerate repayment should there be an event of default. Dividends on Common Stock Dividends, Common Stock, Cash Total Stockholders’ Equity Equity, Attributable to Parent Other comprehensive income/(loss): Comprehensive income: Other Comprehensive Income (Loss), Net of Tax [Abstract] Insider Trading Policies and Procedures [Line Items] Common Stock, authorized shares (in shares) Common Stock, Shares Authorized Raleigh, NC - 11800 Weston Parkway [Member] Raleigh, NC - 11800 Weston Parkway [Member] Raleigh, NC - 11800 Weston Parkway [Member] Issuances of Common Stock - Shares Number of Common Stock sold during the period (in shares) Stock Issued During Period, Shares, New Issues Noncontrolling Interest [Line Items] Noncontrolling Interest [Line Items] Nashville, TN - 3322 West End [Member] Nashville, TN - 3322 West End [Member] Nashville, TN - 3322 West End [Member] Liabilities, Noncontrolling Interests in the Operating Partnership and Equity/Liabilities, Redeemable Operating Partnership Units and Capital: Liabilities and Equity [Abstract] Markel Development Land Joint Venture Markel Development Land Joint Venture [Member] Markel Development Land Joint Venture Cover [Abstract] Cover [Abstract] Real Estate and Other Assets Held For Sale Disposal Groups, Including Discontinued Operations, Disclosure [Text Block] Maximum [Member] Maximum [Member] Weighted average exercise price (in dollars per share) Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercisable, Weighted Average Exercise Price Intangible assets, weighted average useful life (in years) Finite-Lived Intangible Asset, Useful Life Deferred leasing costs, net of accumulated amortization of $169,972 and $170,312, respectively Deferred leasing costs, net Deferred leasing costs, net/Total scheduled future amortization of intangible assets Finite-Lived Intangible Assets, Net Non-PEO NEO Average Total Compensation Amount Non-PEO NEO Average Total Compensation Amount Real Estate and Accumulated Depreciation, by Property [Table] SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, by Property [Table] Debt Instrument [Line Items] Debt Instrument [Line Items] Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Table] Schedule of Share-Based Compensation Arrangements by Share-Based Payment Award [Table] Gains on disposition of property Gain (Loss) on Disposition of Property Plant Equipment, Excluding Oil and Gas Property and Timber Property Tampa, FL - Midtown [Member] Tampa, FL - Midtown [Member] Tampa, FL - Midtown Adjustment to Non-PEO NEO Compensation Footnote Adjustment to Non-PEO NEO Compensation Footnote [Text Block] Dividends paid for previous year Previous Number Of Years On Which Divdend Yield Is Calculated The previous number of years on which the dividend yield is calculated. Retirement Benefits [Abstract] Retirement Benefits [Abstract] Forgone Recovery due to Disqualification of Tax Benefits, Amount Forgone Recovery due to Disqualification of Tax Benefits, Amount Raleigh, NC - 4700 Six Forks Road [Member] Raleigh, NC - Six Forks Center I [Member] Raleigh, NC - Six Forks Center I [Member] Non-Rule 10b5-1 Arrangement Terminated Non-Rule 10b5-1 Arrangement Terminated [Flag] Entity Shell Company Entity Shell Company 4.27% (3.61% effective rate) mortgage loan due 2028 [Member] 4.27% (3.61% effective rate) mortgage loan due 2028 [Member] 4.27% (3.61% effective rate) mortgage loan due 2028 Schedule of Long-term Debt Instruments [Table] Schedule of Long-Term Debt Instruments [Table] Net loss attributable to noncontrolling interests in consolidated affiliates Net loss attributable to noncontrolling interests in consolidated affiliates Noncontrolling Interest in Net Income (Loss) Limited Partnerships, Nonredeemable SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation [Roll Forward] SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation [Roll Forward] Insurance Self Insurance Reserve [Policy Text Block] Statement of Stockholders' Equity [Abstract] Statement of Stockholders' Equity [Abstract] Less-comprehensive (income) attributable to noncontrolling interests Comprehensive Income (Loss), Net of Tax, Attributable to Noncontrolling Interest Award Timing MNPI Considered Award Timing MNPI Considered [Flag] Raleigh, NC - Charter Square [Member] Raleigh, NC - Charter Square [Member] Raleigh, NC - Charter Square [Member] Atlanta GA Ground Lease Acquisition [Member] Atlanta GA Ground Lease Acquisition [Member] Atlanta GA Ground Lease Acquisition Net Income Available for Common Stockholders and Transfers From Noncontrolling Interests in the Operating Partnership Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Effects of Changes, Net [Table Text Block] Underlying treasury rate term (in years) Maximum Length of Time Hedged in Cash Flow Hedge Raleigh, NC - Weston - Land [Member] Raleigh, NC - Weston Land [Member] Raleigh, NC - Weston Land [Member] Scheduled future amortization of below market lease liabilites [Abstract] Finite Lived Below Market Lease Liabilities Future Amortization Expense Current And Five Succeeding Fiscal Years [Abstract] -- None. No documentation exists for this element. -- Document Fiscal Period Focus Document Fiscal Period Focus Award Timing Method Award Timing Method [Text Block] Furniture and Fixtures [Member] Furniture and Fixtures [Member] Award Type [Axis] Award Type [Axis] Highwoods Properties, Inc. [Member] Parent Company [Member] Investment, Name [Domain] Investment, Name [Domain] Trading Symbol Trading Symbol Capitalized Interest Capitalized Interest Costs, Including Allowance for Funds Used During Construction 2029 Lessee, Operating Lease, Liability, to be Paid, Year Four Common Units of partnership owned (in shares) Common Units Of Partnership Owned The number of units held by the Company. Entity Address, City or Town Entity Address, City or Town Variable Rate Term Loan due 2026 [Member] Variable Rate Term Loan due 2026 [Member] Variable Rate Term Loan due 2026 Intangible Assets and Below Market Lease Liabilities Intangible Assets Disclosure [Text Block] Non-PEO NEO Average Compensation Actually Paid Amount Non-PEO NEO Average Compensation Actually Paid Amount Real estate sold, retired and deconsolidated SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation, Investment in Real Estate Sold Raleigh, NC - 2205 Evans Road - Land [Member] Raleigh, NC - 2205 Evans Road - Land [Member] Raleigh, NC - 2205 Evans Road - Land Discount percentage on newly issues shares Employee Stock Purchase Plan Market Percentage Discount The employee stock purchase plan market percentage discount related to the employee stock purchase plan policy. Compensation Actually Paid vs. Other Measure Compensation Actually Paid vs. Other Measure [Text Block] Adjustment interval of variable debt interest rates, mimimum (in months) Adjustment interval for variable interest rates Adjustment interval in number of months of variable debt interest rates. Entity Emerging Growth Company Entity Emerging Growth Company 2028 Long-Term Debt, Maturity, Year Three Impairments [Abstract] Property, Plant and Equipment Impairment or Disposal [Abstract] Customers with leases on wholly owned properties Number of customers Disclosure of the number of customers in our Wholly Owned portfolio. Balance of options outstanding (in shares) Balance of options outstanding (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding, Number Below market lease liabilities, weighted average useful life (in years) Finite-Lived Below Market Liabilities Useful Life Useful life of finite-lived intangible liabilities, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Repayments of revolving credit facility Repayments of Lines of Credit 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] Restricted cash Restricted cash at end of the period Restricted Cash and Cash Equivalent Pittsburgh, PA - Five PPG Place [Member] Pittsburgh, PA - PPG V [Member] Pittsburgh, PA - PPG V [Member] Acquisition-Related Intangible Assets (Amortized in Depreciation and Amortization) [Member] Leases, Acquired-in-Place [Member] Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract] Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract] Real Estate and Accumulated Depreciation, Costs Capitalzed Subsequent to Acquisitions [Abstract] Capital gains Capital Gains Preferred Stock Dividends Amount of preferred dividends per share treated as capital gains for tax purposes. 2023 Forward Starting Swaps [Member] 2023 Forward Starting Swaps [Member] 2023 Forward Starting Swaps Distributions to noncontrolling interests in consolidated affiliates Payments of Distributions to Affiliates Common Stock, shares outstanding (in shares) Balance (in shares) Balance (in shares) Common Stock, Shares, Outstanding Net credit losses/(reversals) on operating lease receivables Accounts Receivable, Credit Loss Expense (Reversal) Weighted average remaining life (in years) Share-Based Payment Arrangement, Option, Exercise Price Range, Exercisable, Weighted Average Remaining Contractual Term Number of buildings sold Number of Buildings Sold The number of buildings sold. SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Building and Improvements SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Building and Improvements Dividends or Other Earnings Paid on Equity Awards not Otherwise Reflected in Total Compensation for Covered Year Dividends or Other Earnings Paid on Equity Awards not Otherwise Reflected in Total Compensation for Covered Year [Member] Scheduled Future Amortization of Intangible Assets and Below Market Lease Liabilities Schedule of Finite-Lived Intangible Assets, Future Amortization Expense [Table Text Block] Restricted Stock Activity Rollforward [Abstract] Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward] Effective interest rate (in hundredths) Debt Instrument, Interest Rate, Effective Percentage Entity Address, Postal Zip Code Entity Address, Postal Zip Code Restatement Determination Date Restatement Determination Date Noncontrolling Interests in the Operating Partnership Noncontrolling Interests In Operating Partnership [Table Text Block] Tabular disclosure of the components of noncontrolling interests in the operating partnership. Real Estate and Accumulated Depreciation, Life Used For Depreciation SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Life Used for Depreciation Interest rate, basis spread (in hundredths) Debt Instrument, Basis Spread on Variable Rate Preferred Stock, shares issued (in shares) Preferred Stock, Shares Issued Pension Adjustments Service Cost Pension Adjustments Service Cost [Member] Charlotte NC Building Acquisition Charlotte NC Building Acquisition [Member] Charlotte NC Building Acquisition Fair Value Hierarchy and NAV [Axis] Fair Value Hierarchy and NAV [Axis] Optional redemption date, Preferred Stock/Unit Preferred Stock, Redemption Date Tampa, FL - Meridian Three [Member] Tampa, FL - 4200 Cypress [Member] Tampa, FL - 4200 Cypress [Member] Raleigh, NC - GlenLake III [Member] Raleigh, NC - GlenLake III [Member] Raleigh, NC - GlenLake III Employee stock purchase plan salary limit percentage Employee Stock Purchase Plan Salary Limit Percentage The employee stock purchase plan salary limit percentage related to the employee stock purchase plan policy. Discontinued Operations and Disposal Groups [Abstract] Discontinued Operations and Disposal Groups [Abstract] Compensation Actually Paid vs. Company Selected Measure Compensation Actually Paid vs. Company Selected Measure [Text Block] Raleigh, NC - Metlife Global Technology Campus [Member] Raleigh, NC - Metlife Global Technology Campus [Member] Raleigh, NC - Metlife Global Technology Campus [Member] Proceeds from the issuance of Common Units Proceeds from Issuance of Common Limited Partners Units All Trading Arrangements All Trading Arrangements [Member] Equity Awards Adjustments, Footnote Equity Awards Adjustments, Footnote [Text Block] Total Shareholder Return Vs Peer Group Total Shareholder Return Vs Peer Group [Text Block] Description of Business [Abstract] Description of Business [Abstract] Description of Business [Abstract] Dividends on Preferred Stock Preferred Stock Dividends, Income Statement Impact SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation Disclosure [Abstract] SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation Disclosure [Abstract] Balance of restricted stock outstanding (in shares) Balance of restricted stock outstanding (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Nonvested, Number Rentable square feet subject to ground leases (in square feet) Ground Lease Rentable Square Feet The amount of rentable square feet of office assets subject to operating ground leases. Commitments and Contingencies Disclosure [Abstract] Commitments and Contingencies Disclosure [Abstract] Capitalized Interest [Abstract] Capitalized Interest Costs, Including Allowance for Funds Used During Construction [Abstract] Tampa, FL [Member] Tampa, FL [Member] Raleigh, NC - 4800 Six Forks Road [Member] Raleigh, NC - Six Forks Center III [Member] Raleigh, NC - Six Forks Center III [Member] 2026 Below Market Lease, Amortization Income, Year One Variable Rate Term Loan due 2027 [Member] Variable Rate Term Loan due 2027 [Member] Variable Rate Term Loan due 2027 Net cash provided by operating activities Cash Provided by (Used in) Operating Activity, Including Discontinued Operation Tampa, FL - Meridian One [Member] Tampa, FL - Meridian I [Member] Tampa, FL - Meridian I [Member] Equity Method Investments and Joint Ventures [Abstract] Equity Method Investments and Joint Ventures [Abstract] Property, plant and equipment useful life Property, Plant and Equipment, Useful Life Building Improvements [Member] Building Improvements [Member] Preferred Stock, par value (in dollars per share) Preferred Stock, Par or Stated Value Per Share Subsequent Event [Member] Subsequent Event [Member] 5.35% (5.431% Effective Rate) Notes due 2033 5.35% (5.431% Effective Rate) Notes due 2033 [Member] 5.35% (5.431% Effective Rate) Notes due 2033 Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions Schedule of Share-Based Payment Award, Stock Options, Valuation Assumptions [Table Text Block] Schedule of Equity Method Investments [Line Items] Schedule of Equity Method Investments [Line Items] Equity Valuation Assumption Difference, Footnote Equity Valuation Assumption Difference, Footnote [Text Block] PEO Total Compensation Amount PEO Total Compensation Amount Noncontrolling interests Common Units Weighted Average Noncontrolling Interest Limited Partnership Units Outstanding Diluted Weighted average number of noncontrolling interests limited partnership units outstanding determined by relating the portion of time within a reporting period that limited partnership units have been outstanding to the total time in that period. Used in the calculation of diluted net income or loss per limited partnership unit. Long-term Debt, Type [Axis] Long-Term Debt, Type [Axis] Depreciation and amortization Depreciation Nashville, TN - Highwoods Plaza I [Member] Nashville, TN - Highwoods Plaza I [Member] Nashville, TN - Highwoods Plaza I [Member] Tampa, FL - 5332 Avion Drive [Member] Tampa, FL - 5332 Avion Park [Member] Tampa, FL - 5332 Avion Park [Member] Denominator: Weighted Average Number of Shares Outstanding, Basic [Abstract] Partner's contribution of property to acquire interest in joint venture Contribution of Property from Affiliate Value of property contributed by our partner at the formation of the joint venture. Richmond, VA - Highwoods Plaza [Member] Richmond, VA - Highwoods Plaza [Member] Richmond, VA - Highwoods Plaza [Member] Equity Components [Axis] Equity Components [Axis] Significant Acquisitions and Disposals [Line Items] Property, Plant and Equipment [Line Items] Adjustment of noncontrolling interests in the Operating Partnership to fair value Adjustment of noncontrolling interests in the Operating Partnership to fair value Noncontrolling Interest, Change in Redemption Value Issuances of restricted stock Stock Issued During Period, Value, Restricted Stock Award, Gross Redeemable Common Units, outstanding (in shares) Redeemable Common Units Outstanding The number of Common Units of Partnership not owned by the Company. Gain on forward starting interest rate swaps OtherComprehensiveIncomeUnrealizedGainLossOnTerminatedForwardStartingSwaps Amount before tax of increase (decrease) in accumulated gain (loss) from derivative instruments designated and qualifying as the effective portion of cash flow hedges and an entity's share of an equity investee's increase (decrease) in deferred hedging gain (loss). Non-Rule 10b5-1 Arrangement Adopted Non-Rule 10b5-1 Arrangement Adopted [Flag] Weighted average Common Units outstanding - basic (in shares) Denominator for basic earnings per Common Unit - weighted average units (in shares) Weighted Average Limited Partnership and General Partnership Units Outstanding, Basic Number of reportable segments Number of Reportable Segments Options expired (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Expirations in Period Entity Address, State or Province Entity Address, State or Province Mortgages and notes receivable, at fair value Loans Receivable, Fair Value Disclosure Weighted average Common Units outstanding - diluted (in shares) Denominator for diluted earnings per Common Unit - adjusted weighted average units and assumed conversions (in shares) Weighted Average Limited Partnership Units Outstanding, Diluted Issuances of restricted stock - Shares Stock Issued During Period, Shares, Restricted Stock Award, Gross Individual: Individual [Axis] Operating leases, scheduled future minimum payments receivable [Abstract] Lessor, Operating Lease, Payment to be Received, Fiscal Year Maturity [Abstract] Dividends on Common Stock Payments of Ordinary Dividends, Common Stock Document Annual Report Document Annual Report Entities [Table] Entities [Table] Amortization of acquisition-related below market lease liabilities Amortization of Below Market Lease 2024 Dispositions 2024 Dispositions [Member] 2024 Dispositions Forgone Recovery, Explanation of Impracticability Forgone Recovery, Explanation of Impracticability [Text Block] Partner's interest in consolidated joint venture (in hundredths) Consolidated joint venture, partner's interest (in hundredths) Subsidiary, Ownership Percentage, Noncontrolling Owner Repayments of mortgages and notes payable Repayments of Long-Term Debt Entity Interactive Data Current Entity Interactive Data Current Atlanta, GA - Riverwood 200 [Member] Atlanta, GA - Riverwood 200 [Member] Atlanta, GA - Riverwood 200 [Member] 2025 Impairments 2025 Impairments [Member] 2025 Impairments Common Units of partnership not owned by the Company (in shares) Common Units Of Partnership Not Owned The number of units not held by the Company. Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member] Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member] Issuances of Common Units, net of issuance costs and tax withholdings Partners' Capital Account, Contributions Atlanta, GA - 2635 Century Parkway [Member] Atlanta, GA - 2635 Century Parkway [Member] Atlanta, GA - 2635 Century Parkway [Member] 2028 Below Market Lease, Amortization Income, Year Three Accrued capital expenditures included in accounts payable, accrued expenses and other liabilities Accrued Capital Expenditures Carrying value included in accounts payable, accrued expenses and other liabilities as of the balance sheet date for capital expenditures incurred but not paid. 2027 Below Market Lease, Amortization Income, Year Two Series A Cumulative Redeemable Preferred Shares [Member] Series A Cumulative Redeemable Preferred Shares [Member] Series A Cumulative Redeemable Preferred Shares [Member] 8.625% Series A Cumulative Redeemable Preferred Shares with a liquidation preference $1,000 per share. Asset acquisition, contingent consideration liability Asset Acquisition, Contingent Consideration, Liability Disclosure of Share-based Compensation Arrangements by Share-based Payment Award Disclosure of Share-Based Compensation Arrangements by Share-Based Payment Award [Table Text Block] Raleigh, NC - 801 Raleigh Corporate Center [Member] Raleigh, NC - 801 Corporate Center [Member] Raleigh, NC - 801 Corporate Center [Member] Earnings per Common Share/Unit - diluted: [Abstract] Earnings per Common Share - diluted: [Abstract] Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Cost Capitalized Subsequent to Acquisition, Improvements Property, Plant and Equipment, Type [Axis] Significant Acquisitions and Disposals by Transaction [Axis] Long-Lived Tangible Asset [Axis] Nashville, TN - Cool Springs III [Member] Nashville, TN - Cool Springs III [Member] Nashville, TN - Cool Springs III [Member] Charlotte NC Garage Acquisition Charlotte NC Garage Acquisition [Member] Charlotte NC Garage Acquisition Ownership [Domain] Ownership [Domain] SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Land SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Land Employee stock purchase plan market percentage Employee Stock Purchase Plan Market Percentage The employee stock purchase plan market percentage related to the employee stock purchase plan policy. Lessor, Operating Leases, ASC 842 Disclosure Lessor, Operating Lease, Payment to be Received, Maturity [Table Text Block] Raleigh, NC - 3737 Glenwood Avenue [Member] Raleigh, NC - 3737 Glenwood Avenue [Member] Raleigh, NC - 3737 Glenwood Avenue [Member] 4.125% (4.271% effective rate) Notes due 2028 [Member] 4.125% (4.271% effective rate) Notes due 2028 [Member] 4.125% (4.271% effective rate) Notes due 2028 [Member] Weighted average remaining amortization periods for intangible assets and liabilities [Abstract] Finite Lived Intangible Assets Average Useful Life [Abstract] Period preceding date of grant Period Of Time Preceding Date Of Grant To Calculate Dividend Yield Period of time preceding date of grant during which the dividend yield is calculated. Auditor [Table] Auditor [Table] Raleigh, NC - 2000 CentreGreen [Member] Raleigh, NC - CentreGreen One - Weston [Member] Raleigh, NC - CentreGreen One - Weston [Member] Entity Central Index Key Entity Central Index Key PEO Name PEO Name Acquisition-related below market lease liabilities, net Total scheduled future amortization of below market lease liabilities Below Market Lease, Net Rental and other revenues Revenues 5.69% Mortgage Loan due 2028 [Member] 5.69% Mortgage Loan due 2028 [Member] 5.69% Mortgage Loan due 2028 Prior Year End Fair Value of Equity Awards Granted in Any Prior Year that Fail to Meet Applicable Vesting Conditions During Covered Year Prior Year End Fair Value of Equity Awards Granted in Any Prior Year that Fail to Meet Applicable Vesting Conditions During Covered Year [Member] Percent of annual REIT taxable income required to pay to the Company's stockholders Minimum percentage of taxable income required to be distributed to maintain REIT status Minimum percent of annual REIT taxable income, excluding net capital gains, that is required to pay to stockholders to maintain qualification as a REIT. Repayments of mortgages and notes receivable Proceeds from Collection of Notes Receivable Outstanding Aggregate Erroneous Compensation Amount Outstanding Aggregate Erroneous Compensation Amount Settlement of cash flow hedges Other Comprehensive Income Loss Settlement of Cash Flow Hedges Settlement of cash flow hedges in accumulated other comprehensive income (AOCI). Schedule of Segment Reporting Information, by Segment [Table] Schedule of Segment Reporting Information, by Segment [Table] Acquisition-Related Below Market Lease Liabilities (in Rental and Other Revenues) [Member] Below Market Lease [Member] Leases acquired as part of a real property acquisition at below market lease rate. Exercise price of outstanding warrants (in dollars per share) Class of Warrant or Right, Exercise Price of Warrants or Rights Prepaid expenses and other assets Increase (Decrease) in Prepaid Expense and Other Assets Advance to affiliate Advances to Affiliate Raleigh, NC - 5000 CentreGreen [Member] Raleigh, NC - CentreGreen Three [Member] Raleigh, NC - CentreGreen Three [Member] Exercise Price Award Exercise Price Entity Filer Category Entity Filer Category Time-Based Restricted Stock [Member] Time-Based Restricted Stock [Member] This member represents the total number of time-based restricted shares issued during the period. Class of Stock [Domain] Class of Stock [Domain] Subsequent Event Type [Axis] Subsequent Event Type [Axis] Dividends, Preferred Stock [Abstract] Dividends, Preferred Stock [Abstract] Retirement plan immediate vesting percentage 2009 and Prior Retirement Plan Immediate Vesting Percentage Percentage of post 2009 grants deemed fully vested at the grant date. Atlanta, GA - 2400 Century Center [Member] Atlanta, GA - 2400 Century Center [Member] Atlanta, GA - 2400 Century Center [Member] 2028 Finite-Lived Intangible Asset, Expected Amortization, Year Three Non-recourse seller financing Financing Receivable, before Allowance for Credit Loss Ordinary dividend Ordinary Income Common Stock Dividends Amount of common dividends per share treated as ordinary income for tax purposes. Schedule of NonQualified Deferred Compensation Liability Schedule of NonQualified Deferred Compensation Liability [Table Text Block] Schedule of non-qualified deferred compensation liability. Dislcosure represents the portion of the balance sheet assertion valued at fair value by the entity in connection with the fair value disclosures required in the footnotes to the financial statements. This item represents currently earned compensation under compensation arrangements that is not actually paid until a later date. Deferred leasing costs, gross Finite-Lived Intangible Assets, Gross Vesting Date Fair Value of Equity Awards Granted and Vested in Covered Year Vesting Date Fair Value of Equity Awards Granted and Vested in Covered Year [Member] Variable Interest Entities [Abstract] Variable Interest Entities [Abstract] Variable Interest Entities [Abstract] Entity Address, Address Line One Entity Address, Address Line One Entity Address, Address Line Two Entity Address, Address Line Two Accumulated Other Comprehensive Loss [Member] AOCI Attributable to Parent [Member] Noncontrolling interests in the Operating Partnership Noncontrolling interests in the Operating Partnership, beginning balance Noncontrolling interests in the Operating Partnership, ending balance Redeemable Noncontrolling Interest, Equity, Carrying Amount Amortization of intangible assets and below market lease liabilities Amortization of intangible assets and liabilities [Abstract] Mortgages and notes payable, net Notes and Loans Payable Nashville, TN - Harpeth Two [Member] Nashville, TN - Harpeth on the Green II [Member] Nashville, TN - Harpeth on the Green II [Member] Ownership [Axis] Ownership [Axis] Schedule of Stock by Class, Preferred Stock Schedule of Stock by Class [Table Text Block] Percentage of return-based restricted stock issued to officers that will vest Performance Plan Factor The percent that shares of performance-based restricted stock can vest should actual performance equal or exceed threshold performance goals. Real Estate and Accumulated Depreciation, Name of Property [Domain] Name of Property [Domain] Fair Value as of Grant Date Award Grant Date Fair Value South Florida - The 1800 Eller Drive Building [Member] South Florida - The 1800 Eller Drive Building [Member] South Florida - The 1800 Eller Drive Building [Member] 2.600% (2.645% effective rate) Notes due 2031 [Member] 2.600% (2.645% effective rate) Notes due 2031 [Member] 2.600% (2.645% effective rate) Notes due 2031 Number of VIE entities Number Of VIE Entities Number of entities determined to be variable interest entities. Schedule of Long-term Debt Instruments Schedule of Long-Term Debt Instruments [Table Text Block] Awarded and issued (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period Nashville, TN [Member] Nashville, TN [Member] Forfeited (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Forfeited in Period Total unrecognized stock-based compensation costs Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount Raleigh, NC - Forum V [Member] Raleigh, NC - Forum V [Member] Raleigh, NC - Forum V Changed Peer Group, Footnote Changed Peer Group, Footnote [Text Block] 2027 Lessee, Operating Lease, Liability, to be Paid, Year Two Distributions on Common Units (per unit) Distributions declared per share of Common Unit (in dollars per share) Distribution Made to Limited Partner, Distributions Declared, Per Unit Adjustment To PEO Compensation, Footnote Adjustment To PEO Compensation, Footnote [Text Block] Raleigh, NC - 1000 CentreGreen [Member] Raleigh, NC - CentreGreen Five [Member] Raleigh, NC - CentreGreen Five [Member] Change from net income available for common stockholders and transfers from noncontrolling interests Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Change Due to Net Income Attributable to Parent and Effects of Changes, Net Original issuance discount Debt Instrument, Original Unamortized Discount The amount of debt discount that was originally recognized at the issuance of the instrument. Title Trading Arrangement, Individual Title Peer Group Total Shareholder Return Amount Peer Group Total Shareholder Return Amount Average price of Common Stock sold during the period Average Price Of Common Stock Sold During Period The average price of Common Stock sold during the period. General partners' capital account, units outstanding (in shares) General Partners' Capital Account, Units Outstanding Non officer management cash bonus target Officer Management Cash Bonus Target The percentage for other management annual non-equity incentive payment. Prepaid expenses and other assets, net of accumulated depreciation of $25,144 and $20,626, respectively Prepaid expenses and other assets Prepaid Expense and Other Assets Non-PEO NEO Non-PEO NEO [Member] Outstanding letters of credit on revolving credit facility Letters of Credit Outstanding, Amount Total Return-Based Restricted Stock [Member] Total Return-Based and Performance-Based Restricted Stock [Member] This member represents the total number of total return-based and performance-based restricted shares issued during the period. Atlanta, GA - Two Alliance Center [Member] Atlanta, GA - Two Alliance Center [Member] Atlanta, GA - Two Alliance Center [Member] Accounts payable, accrued expenses and other liabilities Increase Decrease In Accounts Payable Accrued Expenses And Other Liabilities Represents a total which includes the following: (1) the net change during the reporting period in the aggregate amount of obligations and expenses incurred but not paid; and (2) the net change during the reporting period in other operating obligations not otherwise defined in the taxonomy. Seller Financed Transaction [Member] Seller Financed Transaction [Member] Seller Financed Transaction Series A Preferred Stock, dividend rate percentage (in hundredths) Preferred Stock, monthly distribution rate percentage (in hundredths) Preferred Stock, Dividend Rate, Percentage Richmond, VA - One Shockoe Plaza [Member] Richmond, VA - One Shockoe Plaza [Member] Richmond, VA - One Shockoe Plaza [Member] Warrants [Abstract] Warrants and Rights Note Disclosure [Abstract] Assets, held for sale [Abstract] Disposal Group, Including Discontinued Operation, Assets [Abstract] Award Type [Domain] Award Type [Domain] 2026 Lessee, Operating Lease, Liability, to be Paid, Year One Noncontrolling interests in consolidated affiliates Equity, Attributable to Noncontrolling Interest Equity Awards Adjustments Equity Awards Adjustments [Member] Gain on deconsolidation of affiliate Gain on deconsolidation of affiliate Deconsolidation, Gain (Loss), Amount Thereafter Below Market Lease, Amortization Income, after Year Five Pension Benefits Adjustments, Footnote Pension Benefits Adjustments, Footnote [Text Block] Compensation Amount Outstanding Recovery Compensation Amount Nashville, TN - Harpeth Five [Member] Nashville, TN - Harpeth on The Green V [Member] Nashville, TN - Harpeth on The Green V [Member] Debt Instrument, Name [Domain] Debt Instrument, Name [Domain] Common stock dividend yield Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions, Expected Dividend Rate Accrued straight-line rents receivable Straight Line Rent Recovery of Erroneously Awarded Compensation Disclosure [Line Items] Contribution of cash to acquire interest in joint venture Cash Contribution to Acquire Interest in Joint Venture Cash consideration agreed to be contributed at the formation of a joint venture. Variable lease payments Variable Lease, Income MNPI Disclosure Timed for Compensation Value MNPI Disclosure Timed for Compensation Value [Flag] 401(k) Savings Plan [Abstract] 401(k) Savings Plan [Abstract] 401(k) Savings Plan [Abstract] Distributions on Preferred Units Preferred Unit Distributions, Income Statement Impact The amount of preferred unit distributions that is an adjustment to net income apportioned to common unitholders. Charlotte, NC - Two Morrocroft [Member] Charlotte, NC - Two Morrocroft [Member] Charlotte, NC - Two Morrocroft Documents Incorporated by Reference Documents Incorporated by Reference [Text Block] Real Estate and Accumulated Depreciation, Encumbrances SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Amount of Encumbrances Earnings per Common Share/Unit - basic: [Abstract] Earnings per Common Share - basic: [Abstract] Raleigh, NC - 3600 Glenwood Avenue [Member] Raleigh, NC - 3600 Glenwood Avenue [Member] Raleigh, NC - 3600 Glenwood Avenue [Member] Accumulated other comprehensive loss Accumulated Other Comprehensive Income (Loss), Net of Tax Raleigh, NC - Advance Auto Parts Tower Raleigh, NC - Advance Auto Parts Tower [Member] Raleigh, NC - Advance Auto Parts Tower 2026 Long-Term Debt, Maturity, Year One Raleigh, NC - CentreGreen Cafe [Member] Raleigh, NC - CentreGreen Cafe [Member] Raleigh, NC - CentreGreen Cafe [Member] Cash from deconsolidation of affiliate Cash Divested from Deconsolidation 2030 Long-Term Debt, Maturity, Year Five Write-off of fully amortized leasing costs Write Off Fully Amortized Deferred Leasing Costs Value of deferred leasing costs with net book value equal to zero written off. Aggregate Pension Adjustments Service Cost Aggregate Pension Adjustments Service Cost [Member] Tampa, FL - Parkside [Member] Tampa, FL - Parkside [Member] Tampa, FL - Parkside [Member] Number of additional maturity extensions Number Of Additional Extensions The number of optional extensions available to extend the loan maturity date. Amortization of cash flow hedges Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), Reclassification, after Tax Finite-Lived Intangible Assets by Major Class [Axis] Finite-Lived Intangible Assets by Major Class [Axis] Minimum [Member] Minimum [Member] Prepaid expenses and other assets Disposal Group, Including Discontinued Operation, Other Assets Company Selected Measure Name Company Selected Measure Name 4.60% (3.73% effective rate) mortgage loan due 2037 [Member] 4.60% (3.73% effective rate) mortgage loan due 2037 [Member] 4.60% (3.73% effective rate) mortgage loan due 2037 Series A Preferred Units, issued (in shares) Preferred Units, Issued Redemptions of Common Units PaymentsforRedemptionofCommonUnits The cash outflow to redeem common units during the period. Mortgages and Notes Payable Debt Disclosure [Text Block] Aggregate Available Trading Arrangement, Securities Aggregate Available Amount Operating ground lease payments Operating Lease, Payments Raleigh, NC - 4625 Creekstone Drive [Member] Raleigh, NC - Willow Oak [Member] Raleigh, NC - Willow Oak [Member] Stock Appreciation Rights (SARs) Stock Appreciation Rights (SARs) [Member] Net income available for common stockholders before net (income) attributable to noncontrolling interests in the Operating Partnership Net Income (Loss) Available to Common Stockholders, Diluted Scheduled future amortization of intangible assets [Abstract] Finite-Lived Intangible Assets, Amortization Expense, Maturity Schedule [Abstract] Commitments and Contingencies Commitments and Contingencies Disclosure [Text Block] Weighted average Common Shares outstanding - diluted (in shares) Denominator for diluted earnings per Common Share - adjusted weighted average shares and assumed conversions (in shares) Weighted Average Number of Shares Outstanding, Diluted 6HUNDRED Acquisition VIE 6HUNDRED Acquisition VIE [Member] 6HUNDRED Acquisition VIE Conversions of Common Units to Common Stock - Shares Stock Issued During Period, Shares, Conversion of Units Non-GAAP Measure Description Non-GAAP Measure Description [Text Block] Charlotte, NC - 6HUNDRED Charlotte, NC - 6HUNDRED [Member] Charlotte, NC - 6HUNDRED Nashville, TN - Cool Springs II [Member] Nashville, TN - Cool Springs II [Member] Nashville, TN - Cool Springs II [Member] Net real estate assets Disposal Group Including Discontinued Operations Real Estate Investment Property Net For the disposal group, including a component of the entity (discontinued operations), the net book value of real estate property held for investment purposes. Entity Small Business Entity Small Business Costs paid for the issuance of Common Stock Payments of Stock Issuance Costs Limited partners' capital account, units outstanding (in shares) Limited Partners' Capital Account, Units Outstanding Income Tax Disclosure [Abstract] Income Tax Disclosure [Abstract] Net (income) attributable to noncontrolling interests in the Operating Partnership Net Income (Loss) Attributable to Redeemable Noncontrolling Interest Preferred Stock, shares outstanding (in shares) Number of shares outstanding, Preferred Stock (in shares) Preferred Stock, Shares Outstanding 2030 Below Market Lease, Amortization Income, Year Five Document Transition Report Document Transition Report Underlying Securities Award Underlying Securities Amount Raleigh, NC - GlenLake Four [Member] Raleigh, NC - GlenLake Four [Member] Raleigh, NC - GlenLake Four [Member] Raleigh, NC - 150 Fayetteville [Member] Raleigh, NC - 150 Fayetteville [Member] Raleigh, NC - 150 Fayetteville Equity Component [Domain] Equity Component [Domain] Document Period End Date Document Period End Date Income Taxes Income Tax Disclosure [Text Block] Unamortized premium Debt Instrument, Unamortized Premium Borrowings on revolving credit facility Proceeds from Lines of Credit Awards Close in Time to MNPI Disclosures, Table Awards Close in Time to MNPI Disclosures [Table Text Block] Derecognition of lease liabilities related to right of use assets Derecognition of lease liabilities related to right of use assets Noncash effect of derecognizing the lessee's previously recorded discounted obligation for future lease payments from operating lease, upon acquisition of fee simple title to the associated land parcels. Total Real Estate and Accumulated Depreciation [Member] Total Real Estate and Accumulated Depreciation [Member] Total Real Estate and Accumulated Depreciation [Member] Total anticipated development costs EstimatedDevelopmentCosts Total estimated cost to construct development property. Total Equity/Capital: Balance Balance Equity, Including Portion Attributable to Noncontrolling Interest ATM Equity Offering [Member] ATM Equity Offering [Member] ATM Equity Offering Raleigh, NC - GlenLake One [Member] Raleigh, NC - GlenLake Bldg I [Member] Raleigh, NC - GlenLake Bldg I [Member] Amortization of mortgages and notes payable fair value adjustments Amortization of Debt Discount (Premium) Reconciliation to net income: Income (Loss) from Continuing Operations, Net of Tax, Attributable to Parent [Abstract] Document Type Document Type Raleigh, NC - GlenLake Five [Member] Raleigh, NC - GlenLake Five [Member] Raleigh, NC - GlenLake Five [Member] Level 3 [Member] Fair Value, Inputs, Level 3 [Member] 7.650% (7.836% effective rate) Notes due 2034 [Member] 7.650% (7.836% effective rate) Notes due 2034 [Member] 7.650% (7.836% effective rate) Notes due 2034 Earnings Per Share and Per Unit Earnings Per Share [Text Block] Name Outstanding Recovery, Individual Name Highwoods-Markel Associates, LLC Joint Venture [Member] Highwoods-Markel Associates, LLC Joint Venture [Member] Highwoods-Markel Associates, LLC Joint Venture [Member] Additional paid-in capital Additional Paid in Capital Raleigh, NC - GlenLake Seven [Member] Raleigh, NC - GlenLake Seven [Member] Raleigh, NC - GlenLake Seven Ordinary dividend Ordinary income Preferred Stock dividends Amount of preferred dividends per share treated as ordinary income for tax purposes. Kessinger/Hunter & Company, LC [Member] Kessinger/Hunter & Company, LC [Member] Equity method investee. 4.0% Mortgage Loan Due 2029 [Member] 4.0% Mortgage Loan Due 2029 [Member] 4.0%MortgageLoanDue2029 [Member] Common Units: Common Units: [Abstract] Percent of annualized cash rental revenue derived from geographic locations Percentage of revenue by geographic area deemed significant concentration of credit risk The percentage of revenue by geographic area that is deemed significant for reporting concentration of credit risk. Officer cash bonus performance factor Officer Cash Bonus Performance Factor The percentage for officers' cash bonus performance factor. Statistical Measurement [Axis] Statistical Measurement [Axis] Investments in mortgages and notes receivable Payments to Acquire Notes Receivable Redeemable Operating Partnership Units, Common Units, 2,044,053 and 2,151,423 outstanding, respectively Redeemable Operating Partnership Common Units Outstanding The value of redeemable operating partnership common units outstanding. Loss on disposition of investment in unconsolidated affiliate Loss on disposition of investment in unconsolidated affiliate Equity Method Investment, Realized Gain (Loss) on Disposal Weighted average interest rate under derivative instruments (in hundredths) Derivative, Fixed Interest Rate Fair Value Measurement Inputs and Valuation Techniques [Line Items] Fair Value Measurement Inputs and Valuation Techniques [Line Items] Aggregate Erroneous Compensation Amount Aggregate Erroneous Compensation Amount Repurchase of shares related to tax withholdings Payment, Tax Withholding, Share-Based Payment Arrangement Peer Group Issuers, Footnote Peer Group Issuers, Footnote [Text Block] Net Income Available for Common Stockholders and Transfers From Noncontrolling Interests in the Operating Partnership Net Income Available For Common Stockholders And Transfers From Noncontrolling Interests In Operating Partnership [Abstract] Net income available for common stockholders Net income available for common stockholders Net Income (Loss) Available to Common Stockholders, Basic Acquisition-related below market lease liabilities, gross Below Market Lease, Gross Entity Information [Line Items] Entity Information [Line Items] Accounts payable, accrued expenses and other liabilities Accounts payable, accrued expenses and other liabilities Accounts Payable Accrued Expenses and Other Liabilities As of the balance sheet date: carrying value of obligations incurred and payable pertaining to goods and services received from vendors; and for statutory costs, are incurred in connection with contractual obligations, or accumulate over time and for which invoices haven't been received or rendered; and carrying amount of liabilities not otherwise specified in the taxonomy. Also serves as the sum of liabilities not individually reported in the financial statements, or not separately disclosed in notes. Proceeds from sale of real estate Proceeds from Sale of Real Estate Richmond, VA - 4101 Cox Road [Member] Richmond, VA - Liberty Mutual [Member] Richmond, VA - Liberty Mutual [Member] Total operating expenses Operating Expenses Tampa, FL - Bayshore Place [Member] Tampa, FL - Bayshore [Member] Tampa, FL - Bayshore [Member] 401(k) employer contribution 401(k) Employer Contribution The amount of employer contribution to the 401(k) Savings Plan. Level 1 [Member] Fair Value, Inputs, Level 1 [Member] Amount outstanding on revolving credit facility Long-Term Line of Credit Net income available for common stockholders (in dollars per share) Earnings Per Share, Diluted Asset Acquisition Contingent Consideration [Member] Asset Acquisition Contingent Consideration [Member] Asset Acquisition Contingent Consideration [Member] 2030 Lessor, Operating Lease, Payment to be Received, Year Five Supplemental disclosure of non-cash investing and financing activities: Cash Flow, Noncash Investing and Financing Activities Disclosure [Abstract] Dividends on Preferred Stock Dividends, Preferred Stock, Cash Net (income) attributable to noncontrolling interests in the Operating Partnership Net income attributable to noncontrolling interests in the Operating Partnership Noncontrolling Interest in Net Income (Loss) Operating Partnerships, Redeemable Issuance date, Preferred Stock/Unit Preferred Stock Issuance Date The date upon which capital stock of an entity that has priority over common stock in the distribution of dividends and in the event of liquidation of the entity is issued. Number of days at end of quarter used to calculate ESPP discount Number Of Days At End Of Quarter Used To Calculate Employee Stock Purchase Plan Discount Number of days at the end of the quarterused to calculate Employe Stock Purchase Plan discount. Real Estate and Accumulated Depreciation [Line Items] SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items] Charlotte, NC - SIX50 at Legacy Union [Member] Charlotte, NC - SIX50 at Legacy Union [Member] Charlotte, NC - SIX50 at Legacy Union Auditor Location Auditor Location Raleigh, NC - Captrust Tower [Member] Raleigh, NC - Captrust Tower [Member] Raleigh, NC - Captrust Tower 401(k) employer match percentage 401(k) Employer Match Percentage The employer match percentage related to the 401k policy. Variable Interest Entity, Not Primary Beneficiary [Member] Variable Interest Entity, Not Primary Beneficiary [Member] 2029 Below Market Lease, Amortization Income, Year Four Investments In and Advances To Affiliates Equity Method Investments and Joint Ventures Disclosure [Text Block] Redemptions/repurchases of Preferred Stock Stock Repurchased and Retired During Period, Value Nashville, TN - Cool Springs V [Member] Nashville, TN - Cool Springs V [Member] Nashville, TN - Cool Springs V [Member] Noncontrolling Interest [Abstract] Noncontrolling Interest [Abstract] Schedule Of Components Of Taxability Of Company Dividends Schedule Of Components Of Taxability Of Company Dividends [Table Text Block] Schedule of components of taxability of the Company's dividends. Tampa, FL - Suntrust Financial - Land [Member] Tampa, FL - Suntrust Financial Land [Member] Tampa, FL - Suntrust Financial Land [Member] Operating lease liability discount Lessee, Operating Lease, Liability, Undiscounted Excess Amount Deferred leasing costs, net Disposal Group, Including Discontinued Operation, Intangible Assets Raleigh, NC [Member] Raleigh, NC [Member] 2027 Finite-Lived Intangible Asset, Expected Amortization, Year Two Entity Well-known Seasoned Issuer Entity Well-known Seasoned Issuer Aggregate undepreciated book value of secured real estate assets Undepreciated Value Of Secured Assets The undepreciated book value of real estate assets that are used to secure certain mortgages and notes payable. Operating ground lease liability, total future minimum payments Lessee, Operating Lease, Liability, to be Paid Highwoods Realty Limited Partnership [Member] Subsidiaries [Member] Distributions to noncontrolling interests in consolidated affiliates Noncontrolling Interest, Decrease from Distributions to Noncontrolling Interest Holders Plaza Colonnade, Tenant-in-Common [Member] Plaza Colonnade, Tenant-in-Common [Member] Equity method investee. Expiration Date Trading Arrangement Expiration Date Other Commitments [Domain] Other Commitments [Domain] SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation Accumulated depreciation, beginning balance Accumulated depreciation, ending balance SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 2030 Finite-Lived Intangible Asset, Expected Amortization, Year Five Employee Stock Purchase Plan [Abstract] Employee Stock Purchase Plan [Abstract] Employee Stock Purchase Plan [Abstract] Nashville, TN - Virginia Springs I [Member] Nashville, TN - 5501 Virginia Way [Member] Nashville, TN - 5501 Virginia Way [Member] Cost of real estate sold, retired and deconsolidated SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Cost of Investment in Real Estate Sold Schedule of Equity Method Investments Equity Method Investments [Table Text Block] Prepaid expenses and other assets, accumulated amortization Prepaid Expenses And Other Assets Accumulated Depreciation Accumulated amount of depreciation of assets not individually reported in the financial statements, or not separately disclosed in notes. 2026 Dispositions 2026 Dispositions [Member] 2026 Dispositions Compensation Actually Paid vs. Net Income Compensation Actually Paid vs. Net Income [Text Block] Accounts receivable Increase (Decrease) in Accounts Receivable Entity Current Reporting Status Entity Current Reporting Status Awards Close in Time to MNPI Disclosures Awards Close in Time to MNPI Disclosures [Table] Real estate and other assets, net, held for sale Real estate and other assets, net, held for sale Real Estate, Held-for-Sale Consolidated Entities [Domain] Consolidated Entities [Domain] Land Disposal Group Including Discontinued Operations Land For the disposal group, including a component of the entity (discontinued operation), the carrying amount as of the balance sheet date of real estate held for productive use. Statement of Financial Position [Abstract] Statement of Financial Position [Abstract] Executive Category: Executive Category [Axis] Richmond, VA - North Shore Commons I [Member] Richmond, VA - North Shore Commons A [Member] Richmond, VA - North Shore Commons A [Member] Comprehensive income: Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Noncontrolling Interest [Abstract] Deferred Compensation [Abstract] Deferred Compensation [Abstract] Deferred Compensation [Abstract] Deferred Compensation Liability [Abstract] Deferred Compensation Liability [Abstract] Borrowings on mortgages and notes payable Proceeds from Issuance of Long-Term Debt Interest expense Interest expense Interest Expense, Operating and Nonoperating Current Fiscal Year End Date Current Fiscal Year End Date Atlanta, GA - 10 Glenlake South [Member] Atlanta, GA - 10 Glenlake South [Member] Atlanta, GA - 10 Glenlake South [Member] Finite-Lived Intangible Assets, Major Class Name [Domain] Finite-Lived Intangible Assets, Major Class Name [Domain] Redeemable Common Units and Preferred Units Redeemable Common Units and Preferred Units [Policy Text Block] Disclosure of accounting policy for redeemable common and preferred units issued. This disclosure may include the accounting treatment for the difference, if there is any, between the carrying value and redemption amount. For example, describe whether the issuer accretes changes in the redemption value. Total Reportable Segment [Member] Total Reportable Segment [Member] Atlanta, GA - 10 Glenlake North [Member] Atlanta, GA - 10 Glenlake North [Member] Atlanta, GA - 10 Glenlake North [Member] Restricted Stock Activity, Weighted Average Grant Date Fair Value Rollforward [Abstract] Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value [Abstract] Equity Awards Adjustments, Excluding Value Reported in Compensation Table Equity Awards Adjustments, Excluding Value Reported in the Compensation Table [Member] Noncontrolling Interests in the Operating Partnership Noncontrolling Interests In The Operating Partnership [Abstract] Noncontrolling Interests In The Operating Partnership Pittsburgh, PA - Four PPG Place [Member] Pittsburgh, PA - PPG IV [Member] Pittsburgh, PA - PPG IV [Member] Noncontrolling Interests Noncontrolling Interest Disclosure [Text Block] Rentable square feet of potential office build (in square feet) Rentable Square Footage Potential Office Build The amount of square footage related to potential office build out of real estate properties. Distributions of earnings from unconsolidated affiliates Proceeds from Equity Method Investment, Distribution Denominator: Weighted Average Number of Shares Outstanding, Diluted [Abstract] Total Return-Based Restricted Stock Current Year Issuance [Member] Total Return-Based Restricted Stock Current Year Issuance [Member] Total Return-Based Restricted Stock Current Year Issuance [Member] Lease and Contractual Commitments [Abstract] Completion Contracts [Abstract] Completion Contracts [Abstract] Leases Leases Policy [Policy Text Block] Disclosure of accounting policy for leasing arrangements entered into by lessee/lessor. Holders covenant compliance of bonds Debt Instrument Covenant Compliance Percentage Of Holders Of Bonds Percentage of holders of bonds needed to accelerate repayment should there be an event of default. 2027 Long-Term Debt, Maturity, Year Two Nashville, TN - Harpeth Four [Member] Nashville, TN - Harpeth on the Green IV [Member] Nashville, TN - Harpeth on the Green IV [Member] Atlanta, GA - Monarch Plaza [Member] Atlanta, GA - Monarch Plaza [Member] Atlanta, GA - Monarch Plaza [Member] Other Commitments [Table] Other Commitments [Table] Maximum liquidity requirements Maximum Liquidity Requirements Maximum period of time (in years) for liquidity requirements to be considered short term. Net cash provided by/(used in) financing activities Cash Provided by (Used in) Financing Activity, Including Discontinued Operation Nashville, TN - Seven Springs I [Member] Nashville, TN - Seven Springs I [Member] Nashville, TN - Seven Springs I [Member] Measure: Measure [Axis] Atlanta, GA - Riverwood 300 - Land [Member] Riverwood 300 Land [Member] Riverwood 300 Land [Member] Richmond, VA - Colonnade Building [Member] Richmond, VA - Colonnade Building [Member] Richmond, VA - Colonnade Building [Member] Thereafter Finite-Lived Intangible Asset, Expected Amortization, after Year Five Schedule Of Real Estate And Accumulated Depreciation Note To Schedule III Schedule Of Real Estate And Accumulated Depreciation Note To Schedule III [Text Block] Tabular disclosure of the aggregate activity of real estate assets and accumulated depreciation, a reconciliation of total real estate assets to the balance sheet caption and a reconciliation of total accumulated depreciation to the balance sheet caption. The table is a Note to Schedule III Real Estate and Accumulated Depreciation. Property, Plant and Equipment, Type [Domain] Long-Lived Tangible Asset [Domain] Accrued straight-line rents receivable Deferred Rent Receivables, Net Consolidated Variable Interest Entity [Abstract] Consolidated Variable Interest Entities [Abstract] Consolidated Variable Interest Entities [Abstract] Real Estate and Accumulated Depreciation Disclosure SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation Disclosure [Text Block] Net income available for common unitholders (in dollars per share) Net Income (Loss), Per Outstanding Limited Partnership and General Partnership Unit, Basic, Net of Tax Orlando - Capital Plaza Two [Member] South Florida - Capital Plaza Two [Member] South Florida - Capital Plaza Two [Member] Limited Partner Common Units [Member] Limited Partner Common Units [Member] Pay vs Performance Disclosure, Table Pay vs Performance [Table Text Block] Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract] SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Gross [Abstract] Forgone Recovery due to Violation of Home Country Law, Amount Forgone Recovery due to Violation of Home Country Law, Amount Risk free interest rate Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions, Risk Free Interest Rate Amortization of debt issuance costs Amortization of Debt Issuance Costs Entity Tax Identification Number Entity Tax Identification Number Net proceeds from disposition of investment in unconsolidated affiliate Proceeds from Sale of Equity Method Investments Schedule of Variable Interest Entities Schedule of Variable Interest Entities [Table Text Block] Contribution of cash from affiliate Contribution of Cash to Affiliate Amount of cash agreed to be contributed by the partner of the joint venture. Options outstanding, weighted average exercise price (in dollars per share) Options outstanding, weighted average exercise price (in dollars per share) Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding, Weighted Average Exercise Price Common Stock, shares issued (in shares) Common Stock, Shares, Issued 2029 Long-Term Debt, Maturity, Year Four Weighted average remaining term of ground leases (in years) Operating Lease, Weighted Average Remaining Lease Term 3.875% (4.038% effective rate) Notes due 2027 [Member] 3.875% (4.038% effective rate) Notes due 2027 [Member] 3.875% (4.038% effective rate) Notes due 2027 Total Redeemable Operating Partnership Units Total Redeemable Operating Partnership Units Value of redeemable operating partnership units outstanding. Nashville, TN - Ovation - Land [Member] Nashville, TN - Ovation - Land [Member] Nashville, TN - Ovation - Land [Member] Raleigh, NC - Forum III [Member] Raleigh, NC - Forum III [Member] Raleigh, NC - Forum III Entity Public Float Entity Public Float SOFR Related Spread Adjustment [Member] SOFR Related Spread Adjustment [Member] SOFR Related Spread Adjustment Trading Arrangement: Trading Arrangement [Axis] Total Shareholder Return Amount Total Shareholder Return Amount Rental and other revenues related to operating lease payments Operating Lease, Lease Income Security Exchange Name Security Exchange Name Segment Information Reconciliation of Revenue from Segments to Consolidated [Table Text Block] 2027 Lessor, Operating Lease, Payment to be Received, Year Two Noncontrolling Interests in Consolidated Affiliates Noncontrolling Interests in Consolidated Affiliates [Abstract] Minority Interest By Noncontrolling Owners [Abstract] Maximum borrowing capacity on revolving credit facility Line of Credit Facility, Maximum Borrowing Capacity Earnings per Common Unit - basic: Net Income (Loss), Per Outstanding Limited Partnership and General Partnership Unit, Basic, Net of Tax [Abstract] Operating expenses: Operating Expenses [Abstract] Non-qualified deferred compensation obligation (in accounts payable, accrued expenses and other liabilities) Beginning deferred compensation liability Ending deferred compensation liability Non Qualified Deferred Compensation Obligation Fair Value Disclosure Represents the portion of the balance sheet assertion valued at fair value by the entity in connection with the fair value disclosures required in the footnotes to the financial statements. This item represents currently earned compensation under compensation arrangements that is not actually paid until a later date. Noncontrolling Interests in the Operating Partnership [Roll Forward] Increase (Decrease) in Temporary Equity [Roll Forward] Atlanta, GA - 1875 Century Boulevard [Member] Atlanta, GA - 1875 Century Boulevard [Member] Atlanta, GA - 1875 Century Boulevard [Member] Statement [Line Items] Statement [Line Items] Rule 10b5-1 Arrangement Adopted Rule 10b5-1 Arrangement Adopted [Flag] Cash and cash equivalents Cash and cash equivalents at end of the period Cash and Cash Equivalent Fair Value Measurement Inputs and Valuation Techniques [Table] Fair Value Measurement Inputs and Valuation Techniques [Table] General partner Common Units, 1,115,405 and 1,093,664 outstanding, respectively General Partners' Capital Account Percentage of equity interest in consolidated affiliates Consolidation Less Than Wholly Owned Subsidiary Parent Ownership Interest Represents equity interests of the parent in a subsidiary. Schedule of Share-based Compensation, Shares Reserved for Future Issuance Schedule Of Share Based Compensation Shares Reserved For Future Issuance [Table Text Block] Tabular disclosure of the number of shares of Common Stock reserved for future issuance under the Company's long-term equity incentive plans, including stock options, warrants and possible future issuances under equity incentive plans. Subsequent Event [Line Items] Subsequent Event [Line Items] Development in-process Development in process exclusive of land included in Schedule III Development in Process Common Stock [Member] Common Stock [Member] Vested (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Vested in Period Development, management and leasing fees recognized from unconsolidated affiliates Management Fees Revenues Revenue, comprised of base and incentive revenue derived from the management of joint ventures, managing third-party properties, or another entity's operations. Less-accumulated depreciation Total accumulated depreciation Real Estate Investment Property, Accumulated Depreciation Net increase/(decrease) in cash and cash equivalents and restricted cash Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Period Increase (Decrease), Including Exchange Rate Effect and Discontinued Operation Atlanta, GA - Riverwood 100 [Member] Atlanta, GA - Riverwood 100 [Member] Atlanta, GA - Riverwood 100 [Member] Buildings and tenant improvements Building and Tenant Improvements Represents a total which includes the following: (1) aggregate of the carrying amounts as of the balance sheet date of investments in building and building improvements; and (2) carrying amount as of the balance sheet date of improvements having a life longer than one year that were made for the benefit of one or more tenants. 401(k) employer match salary limit percentage 401(k) Employer Match Salary Limit Percentage The employer match salary limit percentage related to the 401(k) policy. Statistical Measurement [Domain] Statistical Measurement [Domain] Thereafter Lessee, Operating Lease, Liability, to be Paid, after Year Five Raleigh, NC - 3000 CentreGreen [Member] Raleigh, NC - CentreGreen Four [Member] Raleigh, NC - CentreGreen Four [Member] Payments for debt issuance costs and other financing activities Payments of Financing Costs Impairments of Real Estate Assets and Investments in Unconsolidated Affiliates Impairment or Disposal of Long-Lived Assets, Policy [Policy Text Block] 2024 Impairments [Member] 2024 Impairments [Member] 2024 Impairments Equity in earnings of unconsolidated affiliates Equity in earnings of unconsolidated affiliates Income (Loss) from Equity Method Investments Real estate assets, net, held for sale Reclass Related To Real Estate Held For Sale Reclass related to carrying amount as of the balance sheet date of investments in land and buildings held for sale, excluding real estate considered to be inventory of the entity. Leases [Abstract] Leases [Abstract] Earnings per Common Share - basic: Earnings per Common Share - basic: Earnings Per Share, Basic [Abstract] Nashville, TN - Cool Springs IV [Member] Nashville, TN - Cool Springs IV [Member] Nashville, TN - Cool Springs IV [Member] Write-off of fully depreciated real estate assets Write Off Fully Depreciated Real Estate Assets Value of real estate assets with net book value equal zero written off. 2029 Lessor, Operating Lease, Payment to be Received, Year Four Richmond, VA - Highwoods Five [Member] Richmond, VA - Highwoods Five [Member] Richmond, VA - Highwoods Five [Member] Nashville, TN - 5310 Maryland Way [Member] Nashville, TN - 5310 Maryland Way [Member] Nashville, TN - 5310 Maryland Way [Member] Retirement plan qualification age Retirement Plan Qualification Age Age required to qualify for the entity's retirement plan. Raleigh, NC - CentreGreen Fitness Center [Member] Raleigh, NC - CentreGreen Fitness Center [Member] Raleigh, NC - CentreGreen Fitness Center [Member] Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Land, Amount Term of exercisable right (in years) Term of Exercisable Right The period for which there is an option to exercise the right of first refusal, in years. Vesting percentage, total return-based restricted stock Total Return-based Restricted Stock, Vesting Percentage Percentage of total return-based restricted stock that vests if company total return exceeds 100% of the peer group total return index. Richmond, VA - Highwoods Two [Member] Richmond, VA - Highwoods Two [Member] Richmond, VA - Highwoods Two [Member] Sales price of disposition Purchase Price Of Real Estate The purchase price of real estate before and/or after closing credits to buyer for unfunded tenant improvements, building improvements and/or free rent, if any. Atlanta, GA - Galleria 75 [Member] Atlanta, GA - Galleria 75 [Member] Atlanta, GA - Galleria 75 Trading Arrangements, by Individual Trading Arrangements, by Individual [Table] Net income available for common stockholders (in dollars per share) Earnings Per Share, Basic Undeveloped land suitable for future development (in acres) Area Of Undeveloped Land Area of undeveloped land parcels owned in acres. Total shares reserved for future issuance Common Stock, Capital Shares Reserved for Future Issuance Dividends on Preferred Stock (per share)/Distributions on Preferred Units (per unit) Total taxability of dividends per share Annual dividends payable per share, Preferred Stock/Unit (in dollars per share) Preferred Stock, Dividends Per Share, Declared Nashville, TN - Bridgestone Tower [Member] Nashville, TN - Bridgestone Americas [Member] Nashville, TN - Bridgestone Americas [Member] Increase in additional paid in capital from conversions of Common Units to Common Stock Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Changes, Net Measurement Input, Discount Rate [Member] Measurement Input, Discount Rate [Member] Total other comprehensive loss Other comprehensive loss Other Comprehensive Income (Loss), Net of Tax Accrued interest on mortgages and notes receivable Increase (Decrease) in Accrued Interest Receivable, Net Variable Rate Term Loan due 2024 [Member] Variable Rate Term Loan due 2024 [Member] Variable Rate Term Loan due 2024 Measurement Input Type [Domain] Measurement Input Type [Domain] Fair value at grant date of restricted stock issued Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Granted In Period Total Fair Value The total fair value of equity-based awards granted during the reporting period. Charlotte, NC - Capitol Towers South [Member] Charlotte, NC - Capitol Towers South [Member] Charlotte, NC - Capitol Towers South Award Timing MNPI Disclosure Award Timing MNPI Disclosure [Text Block] Other Segment [Member] Total Corporate Segment [Member] Total Corporate Segment [Member] Acquisition-related below market lease liabilities, accumulated amortization Below Market Lease, Accumulated Amortization Orlando - Bank of America Plaza [Member] South Florida - Lincoln Plaza [Member] South Florida - Lincoln Plaza [Member] Tampa, FL - Highwoods Bay Center I [Member] Tampa, FL - HIW Bay Center I [Member] Tampa, FL - HIW Bay Center I [Member] Variable Interest Entity, Primary Beneficiary [Member] HRLP MTW, LLC [Member] Variable Interest Entity, Primary Beneficiary [Member] Tampa, FL - Pavilion Parking Garage [Member] Tampa, FL - Pavilion Parking Garage [Member] Tampa, FL - Pavilion Parking Garage [Member] Investments in and advances to unconsolidated affiliates Additional common equity contribution Payments to Acquire Equity Method Investments Nashville, TN - Westwood South [Member] Nashville, TN - Westwood South [Member] Nashville, TN - Westwood South [Member] Pittsburgh, PA - Two PPG Place [Member] Pittsburgh, PA - PPG II-Office [Member] Pittsburgh, PA - PPG II-Office [Member] Goodwill and Intangible Assets Disclosure [Abstract] Goodwill and Intangible Assets Disclosure [Abstract] Investments in development in-process Payments to Develop Real Estate Assets Uncured covenant compliance default period Debt Instrument Covenant Compliance Days To Cure The number of days to cure a default to remain in compliance with debt covenants. Options forfeited (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Forfeitures in Period Fair Value Measurement Inputs and Valuation Techniques [Abstract] Total Liabilities, Noncontrolling Interests in the Operating Partnership and Equity/Total Liabilities, Redeemable Operating Partnership Units and Capital Liabilities and Equity Tampa, FL - Suntrust Financial Centre [Member] Tampa, FL - Suntrust Financial Centre [Member] Tampa, FL - Suntrust Financial Centre [Member] Nashville, TN - Cool Springs I [Member] Nashville, TN - Cool Springs I [Member] Nashville, TN - Cool Springs I [Member] Stock Option Activity Rollforward [Abstract] Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding [Roll Forward] Tampa, FL - Tower Place [Member] Tampa, FL - Tower Place [Member] Tampa, FL - Tower Place [Member] Charlotte, NC [Member] Charlotte, NC [Member] Charlotte, NC [Member] Income Tax Disclosure [Line Items] Income Tax Disclosure [Line Items] Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. Number of assets Number of Assets Number of assets Raleigh, NC - Forum IV [Member] Raleigh, NC - Forum IV [Member] Raleigh, NC - Forum IV Equity Method Investment [Table] Equity Method Investment [Table] Temporary reduction in interest rate due to sustainability goals (in hundredths) Debt Instrument, Interest Rate, Increase (Decrease) Assumed finite-lived below market lease liabilities, weighted average useful life (in years) Finite Lived Intangible Assets Off Market Lease Unfavorable Average Useful Life The average useful life of all identifiable intangible liabilities established upon acquisition based on an unfavorable difference between the terms of an acquired lease and the current market terms for that lease at the acquisition date. Unconsolidated Affiliates: Unconsolidated Affiliates [Abstract] Unconsolidated Affiliates Midtown East Tampa, LLC [Member] Midtown East Tampa, LLC [Member] Midtown East Tampa, LLC Lessee, Operating Leases, ASC 842 Disclosure Lessee, Operating Lease, Liability, to be Paid, Maturity [Table Text Block] Vesting date fair value of restricted stock Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Vested in Period, Fair Value Pay vs Performance Disclosure [Line Items] Distributions in Excess of Net Income Available for Common Stockholders [Member] Distributions in Excess of Net Income Available for Common Stockholders [Member] Distributions in excess of net income available for common stockholders. Operating lease liability Operating Lease, Liability Net loss attributable to noncontrolling interests in consolidated affiliates Minority Interest In Net Income Loss Limited Partnerships Equity Statement Presentation Amount of net income (loss) for the period allocated to noncontrolling partners of a limited partnership included in the entity's consolidated financial statements, as presented on the Consolidated Statement of Equity. Mortgages and notes payable, net, at fair value Loans Payable, Fair Value Disclosure Operating leases, total future minimum payments receivable due Lessor, Operating Lease, Payment to be Received Liabilities: Liabilities [Abstract] Preferred Stock, liquidation preference (in dollars per share) Liquidation preference per share, Preferred Stock (in dollars per share) Preferred Stock, Liquidation Preference Per Share Amortization of lease incentives and acquisition-related intangible assets and liabilities Amortization Of Lease Incentives And Acquisition Related Intangible Assets And Liabilities This element represents the amortization of (1) payments made by the lessor to or on behalf of the lessee and amortized over the term of the lease, (2) leases acquired as part of a real property acquisition at above market lease rates and (3) leases acquired as part of a real property acquisition at below market lease rates. Orlando - Landmark Center Two [Member] South Florida - Landmark Center Two [Member] South Florida - Landmark Center Two [Member] Variable Rate Term Loan due 2029 Variable Rate Term Loan due 2029 [Member] Variable Rate Term Loan due 2029 Depreciation and amortization Depreciation and amortization Depreciation, Depletion and Amortization, Nonproduction Auditor [Line Items] Auditor [Line Items] Atlanta, GA - 2500/2635 Parking Garage [Member] Atlanta, GA - 2500/2635 Parking Garage [Member] Atlanta, GA - 2500/2635 Parking Garage [Member] Nashville, TN - Seven Springs II [Member] Nashville, TN - Seven Springs II [Member] Nashville, TN - Seven Springs II [Member] Difference between cost of investments and the net book value of underlying net assets Equity Method Investment, Difference Between Carrying Amount and Underlying Equity SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate [Roll Forward] SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate [Roll Forward] Variable Interest Entity [Table] Variable Interest Entity [Table] Statement of Cash Flows [Abstract] Statement of Cash Flows [Abstract] Company Selected Measure Amount Company Selected Measure Amount Retirement Plan [Abstract] Retirement Plan [Abstract] Retirement Plan [Abstract] 2028 Lessee, Operating Lease, Liability, to be Paid, Year Three Comprehensive income attributable to common stockholders/unitholders Comprehensive Income (Loss), Net of Tax, Attributable to Parent Options expired, weighted average exercise price (in dollars per share) Share-Based Compensation Arrangements by Share-Based Payment Award, Options, Expirations in Period, Weighted Average Exercise Price Measurement Input Type [Axis] Measurement Input Type [Axis] Name Measure Name Pittsburgh, PA - 625 Liberty [Member] Pittsburgh, PA - 625 Liberty [Member] Pittsburgh, PA - 625 Liberty [Member] Write-off of fully amortized debt issuance costs Write Off Fully Amortized Deferred Debt Issuance Costs Value of deferred debt issuance costs with net book value equal to zero written off. Secured indebtedness [Member] Secured Debt [Member] Term of optional extension Term of optional extension The period for which there is an option to extend the maturity date of the facility, debt instrument or loan receivable, in years. Percentage of equity interest in joint ventures, maximum Percentage Of Equity Interest In Joint Ventures Maximum The maximum percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting. Valuation Technique and Input [Abstract] Valuation Technique and Input [Abstract] Valuation Technique and Input Class of Stock [Line Items] Class of Stock [Line Items] Unsecured indebtedness [Member] Unsecured Debt [Member] Non Qualified Deferred Compensation Obligation Fair Value Disclosure [Roll Forward] Non Qualified Deferred Compensation Obligation Fair Value Disclosure [Roll Forward] Represents the portion of the balance sheet assertion valued at fair value by the entity in connection with the fair value disclosures required in the footnotes to the financial statements. This item represents currently earned compensation under compensation arrangements that is not actually paid until a later date. Nashville, TN - 3401 West End [Member] Nashville, TN - 3401 West End [Member] Nashville, TN - 3401 West End [Member] Repurchase of units related to tax withholdings Repurchase Of Units Related To Tax Withholdings Change in retained earnings associated with the repurchase of units related to employee tax withholdings. Raleigh, NC - 4601 Creekstone Drive [Member] Raleigh, NC - Sycamore [Member] Raleigh, NC - Sycamore [Member] Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract] Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract] Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract] Total Assets VIE total assets Total assets Assets 2026 Finite-Lived Intangible Asset, Expected Amortization, Year One Vested, weighted average grant date fair value (in dollars per share) Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Vested in Period, Weighted Average Grant Date Fair Value Lessor Disclosure [Abstract] Lessor Disclosure [Abstract] Restricted Cash Cash and Cash Equivalents, Restricted Cash and Cash Equivalents, Policy [Policy Text Block] Richmond, VA - 4480 Cox Road [Member] Richmond, VA - Virginia Mutual [Member] Richmond, VA - Virginia Mutual [Member] Income Tax Income Tax, Policy [Policy Text Block] Capital gains Capital Gains Common Stock Dividends Amount of common dividends per share treated as capital gains for tax purposes. Operating activities: Cash Provided by (Used in) Operating Activity, Including Discontinued Operation [Abstract] Description of Business and Significant Accounting Policies Organization, Consolidation and Presentation of Financial Statements Disclosure and Significant Accounting Policies [Text Block] Acquired intangible assets, weighted average useful life (in years) Acquired Finite-Lived Intangible Assets, Weighted Average Useful Life Orlando - Capital Plaza One [Member] South Florida - Capital Plaza One [Member] South Florida - Capital Plaza One [Member] Real estate assets, depreciation expense Depreciation expense SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation, Depreciation Expense Total real estate assets Real Estate Investment Property, at Cost Marketable securities of non-qualified deferred compensation plan (in prepaid expenses and other assets) Marketable securities of non-qualified deferred compensation plan fair value disclosure Marketable Securities Of Non-Qualified Deferred Compensation Plan Fair Value Disclosure Represents the portion of the balance sheet assertion valued at fair value by the entity in connection with the fair value disclosures required in the footnotes to the financial statements. This item represents assets held under deferred compensation agreements. Deconsolidation of affiliate Noncontrolling Interest, Decrease from Deconsolidation Tax basis of liabilities Liabilities Federal Income Tax Basis The basis of liabilities for federal income tax purposes. Purchase price of acquisition Property, Plant and Equipment, Additions Preferred Units liquidation preference (in dollars per share) Liquidation preference per unit, Preferred Units (in dollars per share) Preferred Units Liquidation Preference The per share liquidation preference (or restrictions) of preferred units that have a preference in involuntary liquidation considerably in excess of the par or stated value of the units. The liquidation preference is the difference between the preference in liquidation and the par or stated values of the unit. 2029 Finite-Lived Intangible Asset, Expected Amortization, Year Four Variable Interest Entity [Line Items] Variable Interest Entity [Line Items] Dividends on Common Stock (per share) Dividends declared per share of Common Stock (in dollars per share) Common Stock, Dividends, Per Share, Declared Impairments of real estate assets Impairments of real estate assets Impairment, Long-Lived Asset, Held-for-Use Entity Common Stock, Shares Outstanding Entity Common Stock, Shares Outstanding Amortization of cash flow hedges Amortization of Deferred Hedge Gains VIE term of arrangements Variable Interest Entity Term of Arrangements Term of arrangements, giving consideration to both explicit arrangements and implicit variable interests, that could require the reporting entity to provide financial support to the Variable Interest Entity (VIE), in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Level 2 [Member] Fair Value, Inputs, Level 2 [Member] Document Financial Statement Error Correction Flag Document Financial Statement Error Correction [Flag] Investments in and advances to unconsolidated affiliates Carrying value of investment balance Equity Method Investments Insider Trading Policies and Procedures Not Adopted Insider Trading Policies and Procedures Not Adopted [Text Block] Nashville, TN - Cool Springs III & IV Deck [Member] Nashville, TN - Cool Springs 3 &4 Deck [Member] Nashville, TN - Cool Springs 3 &4 Deck [Member] Business Combination [Domain] Business Combination [Domain] Sales of Real Estate Revenue Recognition, Real Estate Transactions, Policy [Policy Text Block] Operating ground lease liabilities, scheduled future minimum payments [Abstract] Lessee, Operating Lease, Liability, to be Paid, Fiscal Year Maturity [Abstract] Discontinued Operations Discontinued Operations, Policy [Policy Text Block] Net gains on disposition of property Gain (Loss) on Disposition of Property Total A total of: the gains and losses included in results of operations resulting from the sale or disposal of property, plant and equipment which do not qualify as discontinued operations; and the gain (loss) not previously recognized and resulting from the sale of a business component, which is recognized at the date of sale. A gain (loss) reflects the amount by which the consideration received exceeds the net carrying amount of the disposal group. 2025 Dispositions 2025 Dispositions [Member] 2025 Dispositions PEO PEO [Member] Charlotte, NC - Three Morrocroft [Member] Charlotte, NC - Three Morrocroft [Member] Charlotte, NC - Three Morrocroft Distributions on Common Units Payments Of Distributions Common Units The cash outflow from the distribution of an entity's earnings in the form of distributions to common unitholders. Changes in operating assets and liabilities: Adjustment to Reconcile Net Income to Cash Provided by (Used in) Operating Activity, Increase (Decrease) in Operating Capital [Abstract] Construction loan obtained by joint venture Long-Term Construction Loan Expected volatility rate Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions, Expected Volatility Rate Atlanta, GA - Tradeport - Land [Member] Atlanta, GA - Tradeport Land [Member] Atlanta, GA - Tradeport Land [Member] Interest rate Line of Credit Facility, Interest Rate Description Granite Park Six JV, LLC [Member] Granite Park Six JV, LLC [Member] Granite Park Six JV, LLC Share-based Payment Arrangement [Abstract] Share-Based Payment Arrangement [Abstract] Cash and cash equivalents and restricted cash at beginning of the period Cash and cash equivalents and restricted cash at end of the period Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Continuing Operation Income Statement [Abstract] Income Statement [Abstract] Changes in earnest money deposits Proceeds for (Payments Of) Earnest Money Deposits Cash outflow for a deposit made by a purchaser of real estate to evidence good faith. It is customary for a buyer to give the seller earnest money at the time a sales contract is signed. The earnest money generally is credited to the down payment at closing, which is applied at closing as a component of payment against the purchase price. Richmond, VA - Lake Brook Commons [Member] Richmond, VA - Rhodia Building [Member] Richmond, VA - Rhodia Building [Member] Acquisition-Related Intangible Assets (in Rental and Other Revenues) [Member] Above Market Leases [Member] Officer cash bonus target Officer Cash Bonus Target The percentage for officers' target annual non-equity incentive payment. Net income Net income Net Income (Loss), Including Portion Attributable to Noncontrolling Interest 2028 Lessor, Operating Lease, Payment to be Received, Year Three Restatement does not require Recovery Restatement Does Not Require Recovery [Text Block] Total Liabilities Liabilities, Fair Value Disclosure Schedule of Significant Acquisitions and Disposals [Table] Business Combination [Table] Amount of borrowings outstanding, subject to swaps Derivative, Notional Amount Organization, Consolidation and Presentation of Financial Statements [Abstract] Organization, Consolidation and Presentation of Financial Statements [Abstract] Mark to market adjustment to deferred compensation (in general and administrative expenses) Unrealized Gain (Loss) Marketable Securities Deferred Compensation The increases (decreases) in the market value of unsold securities whose gains (losses) are included in income. Richmond, VA - Innslake Center [Member] Richmond, VA - Innslake Center [Member] Richmond, VA - Innslake Center [Member] Operating Lease, Lease Income, Statement of Income or Comprehensive Income [Extensible Enumeration] Operating Lease, Lease Income, Statement of Income or Comprehensive Income [Extensible Enumeration] City Area Code City Area Code Award Timing, How MNPI Considered Award Timing, How MNPI Considered [Text Block] Lessee Disclosure [Abstract] Lessee Disclosure [Abstract] Raleigh NC Land Acquisition Raleigh NC Land Acquisition [Member] Raleigh NC Land Acquisition Investing activities: Cash Provided by (Used in) Investing Activity, Including Discontinued Operation [Abstract] General and administrative General and administrative expenses General and Administrative Expense Pay vs Performance Disclosure Pay vs Performance Disclosure [Table] Land held for development Land Available for Development Consolidated Affiliate: Consolidated less than wholly owned subsidiaries [Abstract] Consolidated less than wholly owned subsidiaries [Abstract] Operating Lease, Liability, Statement of Financial Position [Extensible List] Operating Lease, Liability, Statement of Financial Position [Extensible Enumeration] Atlanta, GA - 2800 Century Parkway [Member] Atlanta, GA - 2800 Century Parkway [Member] Atlanta, GA - 2800 Century Parkway [Member] Accrued amount of lease and contractual commitments Contract Obligation Accrued The amount as of the balance sheet date of the entity’s accrued completion contract obligation under signed leases and contracts for operating properties (excluding tenant-funded tenant improvements) and contracts for development/redevelopment projects. Repayments of preferred equity from unconsolidated affiliates Repayments of Preferred Equity From Unconsolidated Affiliates Amount of distribution received from equity method investee for return of investment (Preferred Equity), classified as investing activities. Raleigh, NC - PNC Plaza [Member] Raleigh, NC - PNC Plaza [Member] Raleigh, NC - RBC Plaza [Member] Ownership Percentage [Member] Ownership Percentage [Member] Ownership Percentage Total taxability of dividends per share Total Taxability Of Dividends Per Share For federal income tax purposes, the total taxability of dividends declared during the period for each share of Common Stock outstanding. Acquired intangible assets (amortized in depreciation and amortization) Finite-Lived Intangible Asset, Acquired-in-Place Leases Auditor Name Auditor Name Pittsburgh, PA - Three PPG Place [Member] Pittsburgh, PA - PPG III [Member] Pittsburgh, PA - PPG III [Member] Assumptions Used in Determining Fair Values of Restricted Stock Granted: Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions and Methodology [Abstract] Rentable square feet of commercial real estate (in square feet) Rentable square feet of building Rentable Square Feet Of Commercial Real Estate The amount of square footage related to real estate properties. Nashville, TN - SouthPointe [Member] Nashville, TN - SouthPointe [Member] Nashville, TN - SouthPointe [Member] Noncontrolling Interests in the Operating Partnership Noncontrolling Interests In Operating Partnership Fair Value Disclosure Represents the portion of the balance sheet assertion valued at fair value by the entity in connection with the fair value disclosures required in the footnotes to the financial statements. This item represents issued and outstanding stock which is not included within permanent equity in Stockholders Equity. Supplemental disclosure of cash flow information: Supplemental Cash Flow Information [Abstract] Other Performance Measure, Amount Other Performance Measure, Amount Stock Option Activity, Weighted Average Exercise Price Rollforward [Abstract] Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding, Weighted Average Exercise Price [Abstract] SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Federal Income Tax Basis SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Federal Income Tax Basis 2026 Lessor, Operating Lease, Payment to be Received, Year One Raleigh, NC - Forum I [Member] Raleigh, NC - Forum I [Member] Raleigh, NC - Forum I Share-based compensation expense, net of forfeitures - Shares Shares Issued, Shares, Share-Based Payment Arrangement, Forfeited Distributions from deferred compensation plans Deferred Compensation Arrangement with Individual, Distribution Paid Derivative Instrument [Axis] Derivative Instrument [Axis] Atlanta, GA - Century Plaza I [Member] Atlanta, GA - Century Plaza I [Member] Atlanta, GA - Century Plaza I [Member] Deferred Leasing Costs and Acquisition-Related Intangible Assets (in Depreciation and Amortization) [Member] Deferred Leasing Costs and Acquisition-Related Intangible Assets [Member] This member represents costs incurred by the lessor that are (a) costs to originate a lease incurred in transactions with independent third parties and (b) the amount of value allocated by a lessor (acquirer) to lease agreements which exist at acquisition of a leased property. Minimum dividend required to maintain REIT status (in dollars per share) Minimum Dividend Required The minimum dividend per share required to maintain REIT status. Net cash used in investing activities Cash Provided by (Used in) Investing Activity, Including Discontinued Operation Aggregate Change in Present Value of Accumulated Benefit for All Pension Plans Reported in Summary Compensation Table Aggregate Change in Present Value of Accumulated Benefit for All Pension Plans Reported in Summary Compensation Table [Member] Orlando, FL - Eola Centre [Member] Orlando, FL - Eola [Member] Orlando, FL - Eola [Member] Cash paid for interest, net of amounts capitalized Interest Paid, Excluding Capitalized Interest, Operating Activity Terraces JV, LLC Terraces JV, LLC [Member] Terraces JV, LLC Redemptions of Common Units Redemptions of Common Units Consideration given in the form of cash to redeem units Document Fiscal Year Focus Document Fiscal Year Focus Basis of Presentation Basis of Accounting, Policy [Policy Text Block] Nashville, TN - Symphony Place [Member] Nashville, TN - The Pinnacle at Symphony [Member] Nashville, TN - The Pinnacle at Symphony [Member] Seller Financing [Abstract] Accounts, Notes, Loans and Financing Receivable, Unclassified [Abstract] Nashville, TN - Seven Springs East [Member] Nashville, TN - Seven Springs East [Member] Nashville, TN - Seven Springs East [Member] Number of common units required to convert to one share of common stock (in shares) OP Unit Conversion Rate The number of common units required to convert to one share of common stock. Weighted average remaining term of vesting periods (in years) Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition Real Estate [Abstract] Real Estate [Abstract] Options exercised (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercises in Period Equity [Abstract] Equity [Abstract] Tampa, FL - Horizon [Member] Tampa, FL - Horizon [Member] Tampa, FL - Horizon [Member] Lease and contractual commitments Contracts Obligation The amount of the entity’s completion contract obligation under signed leases and contracts for operating properties (excluding tenant-funded tenant improvements) and contracts for development/redevelopment projects. Return of capital Return of Capital Common Stock Dividends Amount of common dividends per share treated as return of capital for tax purposes. Percentage of ownership of Common Units Common Units Percentage Investment Of Partnership Owned The percentage of units held by the Company. M+O JV, LLC [Member] M+O JV, LLC [Member] M+O JV, LLC Building [Member] Building [Member] Atlanta, GA - 2200 Century Parkway [Member] Atlanta, GA - 2200 Century Parkway [Member] Atlanta, GA - 2200 Century Parkway [Member] Derivative Financial Instruments Derivatives, Policy [Policy Text Block] Segment Information Segment Reporting Disclosure [Text Block] Nashville, TN - MARS Campus [Member] Nashville, TN - MARS Campus [Member] Nashville, TN - MARS Campus [Member] Nashville, TN - 100 Winners Circle [Member] Nashville, TN - Winners Circle [Member] Nashville, TN - Winners Circle [Member] Adjustment of Redeemable Common Units to fair value and contributions/distributions from/to the General Partner Adjustment of Redeemable Common Units to Fair Value and Contributions Distributions From To General Partner Adjustment of Redeemable Common Units to fair value and contributions/distributions from/to the General Partner. 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] Other Commitments [Line Items] Other Commitments [Line Items] Increase (Decrease) in Stockholders' Equity [Roll Forward] Increase (Decrease) in Stockholders' Equity [Roll Forward] Finite-Lived Intangible Assets [Line Items] Finite-Lived Intangible Assets [Line Items] Compensation Actually Paid vs. Total Shareholder Return Compensation Actually Paid vs. Total Shareholder Return [Text Block] Distributions of capital from unconsolidated affiliates Equity Method Investments Return of Investment This item represents disclosure of the amount of dividends or other distributions received from unconsolidated subsidiaries that constitute a return of investment, which are classified as investing activities. Fair Value, Recurring and Nonrecurring [Table] Fair Value, Recurring and Nonrecurring [Table] Amortization of intangible assets Amortization of Intangible Assets Net income available for common unitholders Net income available for common unitholders Net Income Loss Available To Common Unitholders Basic Net income after adjustments for dividends on preferred units (declared in the period). Accrued straight-line rents receivable, net Disposal Group Including Discontinued Operations Deferred Rent Receivables Net For the disposal group, including a component of the entity (discontinued operation), the cumulative difference between the rental payments required by a lease agreement and the rental income or expense recognized on a straight-line basis, or other systematic and rational basis more representative of the time pattern in which use or benefit is granted or derived from the leased property, expected to be recognized in income or expense over the term of the leased property, by the lessor or lessee. Equity funded to acquire interest in joint venture Cash Funded to Acquire Interest in Joint Venture Amount of cash agreed to be contributed at the formation of the joint venture that has been funded and/or placed in escrow. Real estate assets, net, held for sale Real Estate Accumulated Depreciation, Assets Held for Sale Accumulated depreciation of investments in land and buildings held for sale. Arrangement Duration Trading Arrangement Duration Dividends, Common Stock [Abstract] Dividends, Common Stock [Abstract] Statement, Business Segments [Axis] Segments [Axis] Schedule of Future Amortization of Intangible Assets and Below Market Lease Liabilities [Table] Schedule of Future Amortization Of Intangible Assets And Below Market Lease Liabilities [Table] Schedule of amount of amortization expense expected to be recorded in succeeding fiscal years for finite-lived intangible assets. Raleigh, NC - 4700 Homewood Court [Member] Raleigh, NC - Six Forks Center II [Member] Raleigh, NC - Six Forks Center II [Member] Local Phone Number Local Phone Number Additional 402(v) Disclosure Additional 402(v) Disclosure [Text Block] Changes in other investing activities Payment for (Proceeds from) Other Investing Activity Thereafter Long-Term Debt, Maturity, after Year Five Employee Benefit Plans Share-Based Payment Arrangement [Text Block] Limited partner Common Units, 108,381,027 and 106,121,304 outstanding, respectively Limited Partners' Capital Account Assumed below market lease liabilities (amortized in rental and other revenue) Off-Market Lease, Unfavorable Assets: Assets [Abstract] 3.61% (3.19% effective rate) mortgage loan due 2029 [Member] 3.61% (3.19% effective rate) mortgage loan due 2029 [Member] 3.61% (3.19% effective rate) mortgage loan due 2029 Schedule of Income Tax Disclosure [Table] Schedule of Income Tax Disclosure [Table] Schedule of the disclosure for income taxes. Underlying Security Market Price Change Underlying Security Market Price Change, Percent Other Commitments [Axis] Other Commitments [Axis] Debt Instrument [Axis] Debt Instrument [Axis] Annual repayments through principal amortization Debt Instrument, Annual Principal Payment Forfeited, weighted average grant date fair value (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 Disclosure About Fair Value of Financial Instruments Fair Value Disclosures [Text Block] Losses on debt extinguishment Gains/(losses) on debt extinguishment Gain (Loss) on Extinguishment of Debt Raleigh, NC - Hargett - Land [Member] Raleigh, NC - Hargett - Land [Member] Raleigh, NC - Hargett - Land [Member] Equity/Capital: Equity, Attributable to Parent [Abstract] Stated interest rate (in hundredths) Debt Instrument, Interest Rate, Stated Percentage Investment, Name [Axis] Investment, Name [Axis] Earnings Per Unit Schedule Of Earnings Per Unit Basic And Diluted [Table Text Block] Tabular disclosure of an entity's basic and diluted earnings per unit calculations for the Operating Partnership. Leases Leases [Text Block] The entire disclosure for operating leases of both lessee anf lessor. Includes, but is not limited to, description of operating lease and maturity analysis of operating lease liability. Entity Voluntary Filers Entity Voluntary Filers Intangible assets and below market lease liabilities, net [Abstract] Intangible Assets, Net (Excluding Goodwill) [Abstract] Land Land Nashville, TN - 1100 Broadway - Land [Member] Nashville, TN - 1100 Broadway - Land [Member] Nashville, TN - 1100 Broadway - Land Accounts receivable Accounts Receivable, after Allowance for Credit Loss Entity Registrant Name Entity Registrant Name Stock Price or TSR Estimation Method Stock Price or TSR Estimation Method [Text Block] Earnings Per Share/Unit Basic and Diluted [Line Items] Earnings Per Share Basic and Diluted [Line Items] Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. Number of trading days preceeding Redemption Notice Date (in days) Number Of Trading Days Preceding Redemption Notice Date Number of trading days immediately preceding the redemption notice date used to calculate value. Orlando - Landmark Center One [Member] South Florida - Landmark Center One [Member] South Florida - Landmark Center One [Member] Dispositions [Abstract] Dispositions [Abstract] -- None. No documentation exists for this element. -- Total Assets Assets, Fair Value Disclosure Charlotte, NC - One Morrocroft [Member] Charlotte, NC - One Morrocroft [Member] Charlotte, NC - One Morrocroft Schedule of Consolidated Mortgages and Notes Payable Schedule of Debt [Table Text Block] Awarded and issued, weighted average grant date fair value (in dollars per share) Grant date fair value of restricted stock (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 Total Intangible Assets and Below Market Lease Liabilities Schedule of Finite-Lived Intangible Assets [Table Text Block] Restatement Determination Date: Restatement Determination Date [Axis] 2014 to 2017 Stock Options [Member] 2014 to 2017 Stock Options [Member] 2014 to 2017 Stock Options [Member] Acquisitions, development and improvements Real Estate, Acquisitions, Development and Improvements Amount of acquisitions (other than foreclosures), developments and improvements made to real estate investments during the period. Fair value of debt assumed from acquisition Business Combination, Recognized Liability Assumed, Financial Liability Atlanta, GA - Century Plaza II [Member] Atlanta, GA - Century Plaza II [Member] Atlanta, GA - Century Plaza II [Member] Share-based compensation expense, net of forfeitures - Values Shares Issued, Value, Share-Based Payment Arrangement, after Forfeiture Cross-default minimum threshold Cross Default Minimum Threshold The minimum amount of any indebtedness or guarantee for which if we fail to make a required payment that we would be in cross-default of our interest rate swaps. Contributions from noncontrolling interests in consolidated affiliates Noncontrolling Interest, Increase from Contributions Contributions of cash or other consideration from noncontrolling interests in consolidated affiliates. Self insurance liability Self Insurance Liability Carrying amount (including both current and noncurrent portions) of accrued known and estimated losses incurred as of the balance sheet date for which no insurance coverage exists, and for which a claim has been made or is probable of being asserted. Name Trading Arrangement, Individual Name Conversions of Common Units to Common Stock Conversions of Common Units to Common Stock Stock Issued During Period, Value, Conversion of Units Tampa, FL - One Harbour Place [Member] Tampa, FL - One Harbour Place [Member] Tampa, FL - One Harbour Place [Member] Principal amount of debt Debt Instrument, Face Amount Atlanta, GA - Monarch Tower [Member] Atlanta, GA - Monarch Tower [Member] Atlanta, GA - Monarch Tower [Member] Statement of Comprehensive Income [Abstract] Statement of Comprehensive Income [Abstract] Rental property and other expenses Operating Costs and Expenses Preferred Stock [Member] Preferred Stock [Member] Name Awards Close in Time to MNPI Disclosures, Individual Name Distributions on Common Units GP And LP Capital Account Distributions Total distributions to general and limited partners. Restricted stock outstanding, weighted average grant date fair value (in dollars per share) Restricted stock outstanding, weighted average grant date fair value (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 Charlotte, NC - Capitol Towers North [Member] Charlotte, NC - Capitol Towers North [Member] Charlotte, NC - Capitol Towers North Aggregate Erroneous Compensation Not Yet Determined Aggregate Erroneous Compensation Not Yet Determined [Text Block] Raleigh, NC - 701 Raleigh Corporate Center [Member] Raleigh, NC - Healthsource [Member] Raleigh, NC - Healthsource [Member] Orlando, FL [Member] Orlando, FL [Member] ICFR Auditor Attestation Flag ICFR Auditor Attestation Flag Share-based compensation expense, net of forfeitures APIC, Share-Based Payment Arrangement, Increase for Cost Recognition Nashville, TN - The Shops at Seven Springs [Member] Nashville, TN - Shops at Seven Springs [Member] Nashville, TN - Shops at Seven Springs [Member] Auditor Firm ID Auditor Firm ID Segment [Domain] Segments [Domain] Less-unamortized debt issuance costs Debt Issuance Costs Net Amount after accumulated amortization of debt issuance costs. Includes, but not limited to, legal, accounting, underwriting, printing, and registration costs. Unused borrowing capacity on revolving credit facility Line of Credit Facility, Remaining Borrowing Capacity Fair Value, Measurements, Fair Value Hierarchy [Domain] Fair Value Hierarchy and NAV [Domain] Acquired intangible assets (amortized in rental and other revenue) Finite-Lived Intangible Asset, off-Market Lease, Favorable, Gross Warrants to acquire Common Stock/Units, outstanding Class of Warrant or Right, Number of Securities Called by Warrants or Rights Atlanta, GA [Member] Atlanta, GA [Member] Earnings Per Share and Per Unit Earnings Per Share, Policy [Policy Text Block] Real Estate Assets Real Estate Owned [Text Block] Amortization of Intangible Assets and Below Market Lease Liabilities Finite-Lived Intangible Assets Amortization Expense [Table Text Block] Preferred Stock, $.01 par value, 50,000,000 authorized shares; 8.625% Series A Cumulative Redeemable Preferred Shares (liquidation preference $1,000 per share), 26,691 and 28,811 shares issued and outstanding, respectively Carrying value, Preferred Stock Preferred Stock, Value, Issued Atlanta, GA - 1825 Century Boulevard [Member] Atlanta, GA - 1825 Century Center [Member] Atlanta, GA - 1825 Century Center [Member] Investments in building improvements Payments For Building Improvements The cash outflow for building improvements to properties held for investment (operating, managed, leased) or for use. Redemptions/repurchases of Preferred Stock Payments for Repurchase of Redeemable Preferred Stock All Executive Categories All Executive Categories [Member] Common Stock, $.01 par value, 200,000,000 authorized shares; 109,905,241 and 107,623,777 shares issued and outstanding, respectively Common Stock, Value, Issued Nashville, TN - Asurion [Member] Nashville, TN - Asurion [Member] Nashville, TN - Asurion Raleigh, NC - Forum II [Member] Raleigh, NC - Forum II [Member] Raleigh, NC - Forum II Nashville, TN - YMCA Site - Land [Member] Nashville, TN - YMCA Site - Land [Member] Nashville, TN - YMCA Site - Land Preferred equity contributed to joint venture Business Combination, Consideration Transferred, Equity Interest, Share Issued, Value Concentration of Credit Risk Concentration of Credit Risk, Policy [Policy Text Block] Disclosure of concentration of credit risk, including potential risks that the counterparty to a contractual arrangement fails to meet its contractual obligations. Commitments and contingencies Commitments and Contingencies Richmond, VA - Highwoods Three [Member] Richmond, VA - Saxon Capital Building [Member] Richmond, VA - Saxon Capital Building [Member] Business Combination [Axis] Business Combination [Axis] Total comprehensive income Total comprehensive income Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Noncontrolling Interest Noncontrolling Interests in Consolidated Affiliates [Member] Noncontrolling Interest [Member] Impaired real estate assets Impaired Real Estate Assets Fair Value Disclosure Represents the portion of the balance sheet assertion valued at fair value by the entity in connection with the fair value disclosures required in the footnotes to the financial statements. This item represents impaired real estate assets recorded at fair value on a non-recurring basis as a result of quarterly impairment analysis. Investments in Unconsolidated Affiliates Equity Method Investments [Policy Text Block] Thereafter Lessor, Operating Lease, Payment to be Received, after Year Five Noncontrolling Interest [Table] Noncontrolling Interest [Table] Possible future share issuance authorized under charter Possible future share issuance authorized under charter Amount of remaining shares of Common Stock authorized to be issued under the entity's charter. PEO Actually Paid Compensation Amount PEO Actually Paid Compensation Amount Options canceled (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Forfeitures and Expirations in Period Earnings per Common Share - diluted: Earnings per Common Share - diluted: Earnings Per Share, Diluted [Abstract] Raleigh, NC - Lakeside Parcel 2 - Land [Member] Raleigh, NC - Lakeside Land Parcel 2 [Member] Raleigh, NC - Lakeside Land Parcel 2 [Member] Adjustment of Redeemable Common Units to fair value Adjustment Of Redeemable Common Units To Fair Value Adjustment of Redeemable Common Units to fair value. Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract] Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract] Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract] HRLP Bloc 83, LP Joint Venture HRLP Bloc 83, LP Joint Venture [Member] HRLP Bloc 83, LP Joint Venture Richmond, VA [Member] Richmond, VA [Member] Derivative Contract [Domain] Derivative Contract [Domain] Amount of loan funded to affiliate Amount of Loan Funded to Affiliate Amount of advance to affiliate that has been funded. Proceeds from the issuance of Common Stock Proceeds from Issuance of Common Stock Operating leases, term of leases (in years) Lessor, Operating Lease, Term of Contract All Individuals All Individuals [Member] Long-term Debt, Type [Domain] Long-Term Debt, Type [Domain] Nashville, TN - Virginia Springs II [Member] Nashville, TN - Virginia Springs II [Member] Nashville, TN - Virginia Springs II Fair Value Disclosures [Abstract] Fair Value Disclosures [Abstract] Charlotte NC - 720 Parking Garage Charlotte, NC - 720 Parking Garage [Member] Charlotte, NC - 720 Parking Garage Name Forgone Recovery, Individual Name Option expiration period (in years) Share-Based Compensation Arrangement by Share-Based Payment Award, Expiration Period Year-over-Year Change in Fair Value of Equity Awards Granted in Prior Years That are Outstanding and Unvested Year-over-Year Change in Fair Value of Equity Awards Granted in Prior Years That are Outstanding and Unvested [Member] Tampa, FL - Meridian Two [Member] Tampa, FL - Meridian II [Member] Tampa, FL - Meridian II [Member] Reconciliation of cash and cash equivalents and restricted cash: Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Continuing Operation [Abstract] Pittsburgh, PA - One PPG Place [Member] Pittsburgh, PA - PPG I [Member] Pittsburgh, PA - PPG I [Member] Term of debt instrument Term of debt instrument (in years) Term of debt instrument The term of the debt instrument, in years. Richmond, VA - Highwoods One [Member] Richmond, VA - Highwoods One [Member] Richmond, VA - Highwoods One [Member] 3.40% (3.50% effective rate) mortgage loan due 2033 [Member] 3.40% (3.50% effective rate) mortgage loan due 2033 [Member] 3.40% (3.50% effective rate) mortgage loan due 2033 Richmond, VA - North Park [Member] Richmond, VA - North Park [Member] Richmond, VA - North Park [Member] Erroneous Compensation Analysis Erroneous Compensation Analysis [Text Block] Orlando - 201 South Orange [Member] South Florida - Seaside Plaza [Member] South Florida - Seaside Plaza [Member] Intangible Asset, Finite-Lived [Table] Intangible Asset, Finite-Lived [Table] Number of parking spaces Number of parking spaces Number of parking spaces Rule 10b5-1 Arrangement Terminated Rule 10b5-1 Arrangement Terminated [Flag] Schedule Of Earnings Per Share/Unit Basic And Diluted [Table] Schedule Of Earnings Per Share Basic And Diluted [Table] Schedule of the disclosure of earnings per share for basic and diluted computation. Total rentable square feet of property under development (in sq feet) Total rentable square feet of property under development The total rentable square feet of property under development. Erroneously Awarded Compensation Recovery Erroneously Awarded Compensation Recovery [Table] Richmond, VA - North End - Land [Member] Richmond, VA - North Shore Commons C - Land [Member] Richmond, VA - North Shore Commons C - Land [Member] Title of 12(b) Security Title of 12(b) Security Outstanding stock options and warrants Number of outstanding options and warrants Amount of share based compensation shares outstanding under stock option plans. Scheduled future principal payments [Abstract] Long-Term Debt, Fiscal Year Maturity [Abstract] Earnings Per Share [Abstract] Earnings Per Share [Abstract] Interest rate cap (in hundredths) Derivative, Cap Interest Rate 2030 Lessee, Operating Lease, Liability, to be Paid, Year Five Common units redeemed for a like number of common shares of stock (in shares) Conversion of Stock, Shares Converted Acquisitions [Abstract] Acquisitions [Abstract] Nashville, TN - Harpeth Three [Member] Nashville, TN - Harpeth on the Green III [Member] Nashville, TN - Harpeth on the Green III [Member] Settlement of cash flow hedges Settlement Of Cash Flow Hedges Cash inflow (outflow) from settlement of cash flow hedges. Limit of consolidated revenue generated by any single customer Limit of consolidated revenue generated by any single customer Percentage of consolidated revenue deemed significant that is generated by any single customer in our wholly owned portfolio. Impairments of real estate assets Impairment Of Long Lived Assets Held For Use Including Discontinued Operations The aggregate amount of write-downs for impairments recognized during the period for long lived assets held for use (including those held for disposal by means other than sale), including impairments classified as discontinued operations. Less accumulated depreciation Disposal Group Including Discontinued Operations Real Estate Investment Property Accumulated Depreciation For the disposal group, including a component of the entity (discontinued operation), the cumulative amount of depreciation for real estate property held for investment purposes. Raleigh NC Building Acquisition Raleigh NC Building Acquisition [Member] Raleigh NC Building Acquisition Common units redeemed for cash (in shares) Partners' Capital Account, Units, Redeemed 3.050% (3.079% effective rate) Notes due 2030 [Member] 3.050% (3.079% effective rate) Notes due 2030 [Member] 3.050% (3.079% effective rate) Notes due 2030 [Member] Tampa, FL - Pavilion [Member] Tampa, FL - Pavilion [Member] Tampa, FL - Pavilion [Member] Award Timing Disclosures [Line Items] Raleigh, NC - One City Plaza [Member] Raleigh, NC - One City Plaza [Member] Raleigh, NC - One City Plaza [Member] Atlanta, GA - One Alliance Center [Member] Atlanta, GA - One Alliance Center [Member] Atlanta, GA - One Alliance Center [Member] Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Abstract] Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Abstract] Real estate assets, at cost: Real Estate Investment Property, at Cost [Abstract] Pittsburgh, PA - Six PPG Place [Member] Pittsburgh, PA - PPG VI [Member] Pittsburgh, PA - PPG VI [Member] Equity Equity [Text Block] Atlanta, GA - 1900 Century Boulevard [Member] Atlanta, GA - 1900 Century Boulevard [Member] Atlanta, GA - 1900 Century Boulevard [Member] Atlanta, GA - 2500 Century Center [Member] Atlanta, GA - 2500 Century Center [Member] Atlanta, GA - 2500 Century Center [Member] Subsequent Event [Table] Subsequent Event [Table] Nashville, TN - Hickory Trace [Member] Nashville, TN - Hickory Trace [Member] Nashville, TN - Hickory Trace [Member] Net real estate assets Net real estate assets Real Estate Investment Property, Net Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets Real estate assets, beginning balance Real estate assets, ending balance Total real estate assets per Schedule III SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Gross Net changes in capital expenditures incurred but not yet paid (1) Net Changes in Capital Expenditures Incurred but Not Yet Paid The net change during the reporting period in the amount of capital expenditures that have been incurred but not yet paid. Vesting term of stock options/restricted stock issued (in years) Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Period 2023 Dispostions 2023 Dispostions [Member] 2023 Dispostions Distributions on Preferred Units Distributions on Preferred Units Distributions on preferred units. Lease Incentives (in Rental and Other Revenues) [Member] Lease Incentives [Member] Represents payments made by the lessor to or on behalf of the lessee and amortized over the term of the lease. Segment Reporting Information [Line Items] Segment Reporting Information [Line Items] Preferred Stock, authorized shares (in shares) Preferred Stock, Shares Authorized Adoption Date Trading Arrangement Adoption Date Nashville, TN - Cool Springs I & II Deck [Member] Nashville, TN - Cool Springs 1 & 2 Deck [Member] Nashville, TN - Cool Springs 1 & 2 Deck [Member] Retirement plan qualification minimum years of service (in years) Retirement Plan Qualification Minimum Years of Service Number of minimum continuous years of service required to qualify for the entity's retirement plan after the age of 55. Charlotte, NC - Four Morrocroft Charlotte, NC - Four Morrocroft [Member] Charlotte, NC - Four Morrocroft General Partner Common Units [Member] General Partner Common Units [Member] Brand/HRLP 2827 Peachtree LLC [Member] Brand/HRLP 2827 Peachtree LLC [Member] Brand/HRLP 2827 Peachtree LLC Total net operating income Operating Income (Loss) Revolving Credit Facility [Member] Line of Credit [Member] Charlotte, NC - Bank of America Tower [Member] Charlotte, NC - Bank of America Tower [Member] Charlotte, NC - Bank of America Tower [Member] Investments in acquired real estate and related intangible assets, net of cash acquired Payments to Acquire Real Estate Distributions in excess of net income available for common stockholders Retained Earnings (Accumulated Deficit) Leaseholds and Leasehold Improvements [Member] Leaseholds and Leasehold Improvements [Member] Real Estate and Accumulated Depreciation, Description of Property [Axis] Name of Property [Axis] Series A Preferred Units (liquidation preference $1,000 per unit), 26,691 and 28,811 units issued and outstanding, respectively Carrying value, Preferred Units Preferred Units, Contributed Capital Richmond, VA - Highwoods Commons [Member] Richmond, VA - Highwoods Commons [Member] Richmond, VA - Highwoods Commons [Member] Number of buildings Number of Buildings Number of Buildings Raleigh, NC - 11000 Weston Parkway [Member] Raleigh, NC - 11000 Weston Parkway [Member] Raleigh, NC - 11000 Weston Parkway [Member] Nashville, TN - Highwoods Plaza II [Member] Nashville, TN - Highwoods Plaza II [Member] Nashville, TN - Highwoods Plaza II [Member] Year-end Fair Value of Equity Awards Granted in Covered Year that are Outstanding and Unvested Year-end Fair Value of Equity Awards Granted in Covered Year that are Outstanding and Unvested [Member] Class of Stock [Axis] Class of Stock [Axis] Distributions on Preferred Units Payments Distributions Preferred Unit Holders The cash outflow for the return on capital for preferred unitholders. Subsequent Event Type [Domain] Subsequent Event Type [Domain] Retirement plan qualification years of service (in years) Retirement Plan Qualification Years Of Service Number of continuous years of service required to qualify for the entity's retirement plan. Aggregate Grant Date Fair Value of Equity Award Amounts Reported in Summary Compensation Table Aggregate Grant Date Fair Value of Equity Award Amounts Reported in Summary Compensation Table [Member] Tax basis of assets Assets Federal Income Tax Basis The basis of assets for federal income tax purposes. Other income Other Nonoperating Income (Expense) Statement [Table] Statement [Table] Discount on newly issued shares expensed as additional compensation APIC, Share-Based Payment Arrangement, ESPP, Increase for Cost Recognition Risk of loss for variable interest entity Risk Of Loss Variable Interest Entity Risk of loss with respect to a variable interest entity arrangement in which we are not the primary beneficiary. Adjustments to reconcile net income to net cash provided by operating activities: Adjustment to Reconcile Net Income to Cash Provided by (Used in) Operating Activity [Abstract] Financing activities: Cash Provided by (Used in) Financing Activity, Including Discontinued Operation [Abstract] Segment Reporting Information [Abstract] Segment Reporting Information, Profit (Loss) [Abstract] Variable Rate [Domain] Variable Rate [Domain] All Adjustments to Compensation All Adjustments to Compensation [Member] Amendment Flag Amendment Flag Nashville, TN - Seven Springs West [Member] Nashville, TN - Seven Springs West [Member] Nashville, TN - Seven Springs West [Member] Total Intangible Assets and Below Market Lease Liabilities from Acquisition Activity Schedule of Acquired Finite-Lived Intangible Assets by Major Class [Table Text Block] 4.20% (4.234% effective rate) Notes due 2029 [Member] 4.20% (4.234% effective rate) Notes due 2029 [Member] 4.20% (4.234% effective rate) Notes due 2029 [Member] Richmond, VA - Innsbrook Centre [Member] Richmond, VA - Innsbrook Center [Member] Richmond, VA - Innsbrook Center [Member] Net proceeds from disposition of real estate assets Proceeds from Sale, Real Estate, Held-for-Investment Termination Date Trading Arrangement Termination Date Series A Preferred Units, outstanding (in shares) Number of units outstanding, Preferred Units (in shares) Preferred Units, Outstanding Net (income) attributable to noncontrolling interests in the Operating Partnership Minority Interest In Net Income Loss Operating Partnerships Continuing Operations Amount of net income (loss) in continuing operations for the period allocated to noncontrolling partners in the operating partnership included in the entity's consolidated financial statements. Insider Trading Policies and Procedures Adopted Insider Trading Policies and Procedures Adopted [Flag] Real Estate and Other Assets of the Properties Classified As Held For Sale Disclosure of Long-Lived Assets Held-for-Sale [Table Text Block] Cash Equivalents Cash and Cash Equivalents, Unrestricted Cash and Cash Equivalents, Policy [Policy Text Block] Debt issuance costs Debt Instrument, Debt Issuance Costs The amount of capitalized costs associated with the issuance of a debt instrument. Weighted average Common Shares outstanding - basic (in shares) Denominator for basic earnings per Common Share - weighted average shares (in shares) Weighted Average Number of Shares Outstanding, Basic Interest rate basis Debt Instrument, Description of Variable Rate Basis Earnings Per Share Schedule of Earnings Per Share, Basic and Diluted [Table Text Block] Options exercisable (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercisable, Number Carrying Amount of Notes, Total Carrying Amount of Notes, Total [Member] Carrying Amount of Notes, Total Subsequent Events [Abstract] Subsequent Events [Abstract] Segment Reporting [Abstract] Segment Reporting [Abstract] Redemptions/repurchases of Preferred Units Payments For Repurchase Of Redeemable Preferred Units The cash outflow for reacquisition of preferred units. North Carolina Investment Authority [Member] Investment Partner 1 [Member] Investment Partner 1 Operating ground lease expense Operating Lease, Expense Debt Disclosure [Abstract] Debt Disclosure [Abstract] Unamortized discount Debt Instrument, Unamortized Discount Forgone Recovery due to Expense of Enforcement, Amount Forgone Recovery due to Expense of Enforcement, Amount Possible future share issuance authorized under equity incentive plans Possible future share issuance authorized under equity incentive plan Amount of possible future issuances under equity incentive plans. Share-based Compensation Arrangement by Share-based Payment Award [Line Items] Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] Common Stock, par value (in dollars per share) Common Stock, Par or Stated Value Per Share Consolidated Entities [Axis] Consolidated Entities [Axis] Raleigh, NC - 4000 CentreGreen [Member] Raleigh, NC - CentreGreen Two - Weston [Member] Raleigh, NC - CentreGreen Two - Weston [Member] Options granted (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Grants in Period, Gross Rentable square feet of commercial real estate under development (in square feet) Rentable square feet of office property under development (in sq feet) Rentable Square Feet Of Commercial Real Estate Under Development The number of real estate properties under/planned for development as of the balance sheet date. Richmond, VA - 4900 Cox Road [Member] Richmond, VA - 4900 Cox Road [Member] Richmond, VA - 4900 Cox Road [Member] Use of Estimates Use of Estimates, Policy [Policy Text Block] Net income available for common unitholders (in dollars per share) Net Income (Loss), Net of Tax, Per Outstanding Limited Partnership Unit, Diluted Fair Value Measurements of Assets, Liabilities and Noncontrolling Interests Fair Value Measurements, Recurring and Nonrecurring [Table Text Block] Subsequent Events Subsequent Events [Text Block] Insider Trading Arrangements [Line Items] Redemptions of Common Units Partners' Capital Account, Redemptions Atlanta, GA - 2600 Century Parkway [Member] Atlanta, GA - 2600 Century Parkway [Member] Atlanta, GA - 2600 Century Parkway [Member] Total Liabilities VIE total liabilities Liabilities Distributions to noncontrolling interests in the Operating Partnership Payments of Ordinary Dividends, Noncontrolling Interest Annual facility fee (in hundredths) Line of Credit Facility, Commitment Fee Percentage Pension Adjustments Prior Service Cost Pension Adjustments Prior Service Cost [Member] GPI 23 Springs JV, LLC [Member] GPI23 Springs JV, LLC [Member] GPI23 Springs JV, LLC Material Terms of Trading Arrangement Material Terms of Trading Arrangement [Text Block] Investments in tenant improvements and deferred leasing costs Payments for Leasing Costs, Commissions, and Tenant Improvements Issuances of Common Stock, net of issuance costs and tax withholdings Net proceeds of Common Stock sold during the period Stock Issued During Period, Value, New Issues Variable Rate [Axis] Variable Rate [Axis] Schedule of Share-based Compensation, Restricted Stock Units Award Activity Share-Based Payment Arrangement, Restricted Stock Unit, Activity [Table Text Block] Entity Incorporation, State or Country Code Entity Incorporation, State or Country Code Non-NEOs Non-NEOs [Member] Redeemable Operating Partnership Units: Redeemable Operating Partnership Units: [Abstract] Accounts Payable and Accrued Liabilities