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Investments In and Advances To Affiliates (Details) $ in Thousands | 12 Months Ended
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Dec. 31, 2022 USD ($) ft² numberOfJointVentures | Dec. 31, 2021 USD ($) ft² | Dec. 31, 2020 USD ($) | Dec. 31, 2019 USD ($) ft²
Unconsolidated Affiliates: |  |  |  |
Percentage of equity interest in joint ventures, maximum | 50.00% |  |  |
Difference between cost of investments and the net book value of underlying net assets | $ 2,700 | $ 600 |  |
Number of joint ventures formed | numberOfJointVentures | 2 |  |  |
Rentable square feet of office property under development (in sq feet) | ft² | 1,600,000 |  |  |
Development, management and leasing fees recognized from unconsolidated affiliates | $ 600 | 1,600 | $ 1,000 |
Consolidated Affiliates: |  |  |  |
Rentable square feet of office property under development (in sq feet) | ft² | 1,600,000 |  |  |
Gains on disposition of property | $ 63,546 | $ 174,059 | $ 215,897 |
Ownership Percentage [Member] |  |  |  |
Consolidated Affiliates: |  |  |  |
Partner's interest in consolidated joint venture (in hundredths) | 50.00% |  |  |
HRLP MTW, LLC [Member] |  |  |  |
Unconsolidated Affiliates: |  |  |  |
Total anticipated development costs |  |  |  | $ 71,300
Interest rate, basis spread (in hundredths) |  |  |  | 2.50%
Amount of loan funded to affiliate | $ 39,200 |  |  |
Rentable square feet of office property under development (in sq feet) | ft² |  |  |  | 152,000
Partner's contribution of property to acquire interest in joint venture |  |  |  | $ 5,000
Contribution of cash to acquire interest in joint venture |  |  |  | 20,000
Advance to affiliate |  |  |  | $ 46,300
Consolidated Affiliates: |  |  |  |
Rentable square feet of office property under development (in sq feet) | ft² |  |  |  | 152,000
Total anticipated development costs |  |  |  | $ 71,300
Contribution of cash to acquire interest in joint venture |  |  |  | $ 20,000
Percentage of equity interest in consolidated affiliates |  |  |  | 80.00%
Partner's contribution of property to acquire interest in joint venture |  |  |  | $ 5,000
Advance to affiliate |  |  |  | $ 46,300
Interest rate, basis spread (in hundredths) |  |  |  | 2.50%
Amount of loan funded to affiliate | $ 39,200 |  |  |
Term of exercisable right (in years) | 2 years |  |  |
HRLP MTW, LLC [Member] | Ownership Percentage [Member] |  |  |  |
Consolidated Affiliates: |  |  |  |
Partner's interest in consolidated joint venture (in hundredths) | 20.00% |  |  | 20.00%
London Interbank Offered Rate (LIBOR) [Member] | HRLP MTW, LLC [Member] |  |  |  |
Unconsolidated Affiliates: |  |  |  |
Interest rate basis |  |  |  | LIBOR
Consolidated Affiliates: |  |  |  |
Interest rate basis |  |  |  | LIBOR
Granite Park Six JV, LLC [Member] |  |  |  |
Unconsolidated Affiliates: |  |  |  |
Percentage of equity interest in joint ventures, maximum | 50.00% |  |  |
Total anticipated development costs | $ 200,000 |  |  |
Construction loan obtained by joint venture | $ 115,000 |  |  |
Interest rate, basis spread (in hundredths) | 3.94% |  |  |
Interest rate cap (in hundredths) | 3.50% |  |  |
Amount of borrowings outstanding, subject to swaps | $ 95,200 |  |  |
Amount of loan funded to affiliate | 15,300 |  |  |
Consolidated Affiliates: |  |  |  |
Total anticipated development costs | $ 200,000 |  |  |
Interest rate, basis spread (in hundredths) | 3.94% |  |  |
Amount of loan funded to affiliate | $ 15,300 |  |  |
Term of exercisable right (in years) | 2 years |  |  |
Granite Park Six JV, LLC [Member] | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member] |  |  |  |
Unconsolidated Affiliates: |  |  |  |
Interest rate basis | SOFR |  |  |
Consolidated Affiliates: |  |  |  |
Interest rate basis | SOFR |  |  |
GPI 23 Springs JV, LLC [Member] |  |  |  |
Unconsolidated Affiliates: |  |  |  |
Percentage of equity interest in joint ventures, maximum | 50.00% |  |  |
Total anticipated development costs | $ 460,000 |  |  |
Equity funded to acquire interest in joint venture | 41,900 |  |  |
Construction loan obtained by joint venture | $ 265,000 |  |  |
Interest rate, basis spread (in hundredths) | 3.55% |  |  |
Interest rate cap (in hundredths) | 3.50% |  |  |
Amount of borrowings outstanding, subject to swaps | $ 83,000 |  |  |
Amount of loan funded to affiliate | 0 |  |  |
Consolidated Affiliates: |  |  |  |
Total anticipated development costs | $ 460,000 |  |  |
Interest rate, basis spread (in hundredths) | 3.55% |  |  |
Amount of loan funded to affiliate | $ 0 |  |  |
Term of exercisable right (in years) | 2 years |  |  |
GPI 23 Springs JV, LLC [Member] | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member] |  |  |  |
Unconsolidated Affiliates: |  |  |  |
Interest rate basis | SOFR |  |  |
Consolidated Affiliates: |  |  |  |
Interest rate basis | SOFR |  |  |
M+O JV, LLC [Member] |  |  |  |
Unconsolidated Affiliates: |  |  |  |
Percentage of equity interest in joint ventures, maximum | 50.00% |  |  |
Total anticipated development costs | $ 394,700 |  |  |
Equity funded to acquire interest in joint venture | $ 86,400 |  |  |
Interest rate, basis spread (in hundredths) | 3.50% |  |  |
Near-term building improvements | $ 1,700 |  |  |
Transaction costs | 2,000 |  |  |
Fair value of debt assumed from acquisition | $ 137,000 |  |  |
Stated interest rate (in hundredths) | 4.50% |  |  |
Effective interest rate (in hundredths) | 5.30% |  |  |
Contribution of short-term preferred equity | $ 80,000 |  |  |
Consolidated Affiliates: |  |  |  |
Total anticipated development costs | $ 394,700 |  |  |
Interest rate, basis spread (in hundredths) | 3.50% |  |  |
Term of exercisable right (in years) | 2 years |  |  |
M+O JV, LLC [Member] | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member] |  |  |  |
Unconsolidated Affiliates: |  |  |  |
Interest rate basis | SOFR |  |  |
Consolidated Affiliates: |  |  |  |
Interest rate basis | SOFR |  |  |
Midtown East Tampa, LLC [Member] |  |  |  |
Unconsolidated Affiliates: |  |  |  |
Percentage of equity interest in joint ventures, maximum | 50.00% |  |  |
Total anticipated development costs | $ 83,000 |  |  |
Equity funded to acquire interest in joint venture | $ 300 |  |  |
Interest rate, basis spread (in hundredths) | 4.50% |  |  |
Amount of loan funded to affiliate | $ 0 |  |  |
Rentable square feet of office property under development (in sq feet) | ft² | 143,000 |  |  |
Total rentable square feet of property under development (in sq feet) | ft² | 432,000 |  |  |
Advance to affiliate | $ 52,300 |  |  |
Consolidated Affiliates: |  |  |  |
Rentable square feet of office property under development (in sq feet) | ft² | 143,000 |  |  |
Total anticipated development costs | $ 83,000 |  |  |
Advance to affiliate | $ 52,300 |  |  |
Interest rate, basis spread (in hundredths) | 4.50% |  |  |
Amount of loan funded to affiliate | $ 0 |  |  |
Midtown East Tampa, LLC [Member] | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member] |  |  |  |
Unconsolidated Affiliates: |  |  |  |
Interest rate basis | SOFR |  |  |
Consolidated Affiliates: |  |  |  |
Interest rate basis | SOFR |  |  |
Brand/HRLP 2827 Peachtree LLC [Member] |  |  |  |
Unconsolidated Affiliates: |  |  |  |
Percentage of equity interest in joint ventures, maximum |  | 50.00% |  |
Total anticipated development costs |  | $ 79,000 |  |
Interest rate, basis spread (in hundredths) |  | 3.00% |  |
Amount of loan funded to affiliate | $ 4,000 |  |  |
Rentable square feet of office property under development (in sq feet) | ft² |  | 135,000 |  |
Partner's contribution of property to acquire interest in joint venture |  | $ 7,700 |  |
Contribution of cash to acquire interest in joint venture |  | 13,300 |  |
Contribution of cash from affiliate |  | $ 5,600 |  |
Partner's percentage of equity interest in joint venture (in hundredths) |  | 50.00% |  |
Advance to affiliate |  | $ 49,600 |  |
Term of optional extension |  | 1 year |  |
Consolidated Affiliates: |  |  |  |
Rentable square feet of office property under development (in sq feet) | ft² |  | 135,000 |  |
Total anticipated development costs |  | $ 79,000 |  |
Contribution of cash to acquire interest in joint venture |  | 13,300 |  |
Partner's contribution of property to acquire interest in joint venture |  | 7,700 |  |
Advance to affiliate |  | $ 49,600 |  |
Interest rate, basis spread (in hundredths) |  | 3.00% |  |
Amount of loan funded to affiliate | $ 4,000 |  |  |
Term of exercisable right (in years) | 2 years |  |  |
Brand/HRLP 2827 Peachtree LLC [Member] | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member] |  |  |  |
Unconsolidated Affiliates: |  |  |  |
Interest rate basis |  | SOFR |  |
Consolidated Affiliates: |  |  |  |
Interest rate basis |  | SOFR |  |
Plaza Colonnade, Tenant-in-Common [Member] |  |  |  |
Unconsolidated Affiliates: |  |  |  |
Percentage of equity interest in joint ventures, maximum | 50.00% |  |  |
Kessinger/Hunter & Company, LC [Member] |  |  |  |
Unconsolidated Affiliates: |  |  |  |
Percentage of equity interest in joint ventures, maximum | 26.50% |  |  |
Highwoods-Markel Associates, LLC Joint Venture [Member] |  |  |  |
Consolidated Affiliates: |  |  |  |
Percentage of equity interest in consolidated affiliates | 50.00% |  |  |
Fair value of noncontrolling interests in consolidated affiliate | $ 34,400 |  |  |
Sales price of disposition |  | $ 3,000 |  |
Gains on disposition of property |  | $ 1,300 |  |

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- Definition This element represents the current and noncurrent portions of a long-term real estate loan with an initial maturity beyond one year or beyond the normal operating cycle, if longer, to finance building costs. The funds are disbursed as needed or in accordance with a prearranged plan; generally, a portion of the funds is disbursed at inception and the remainder as construction progresses. The money is repaid on completion of the project (generally one to seven years), usually from the proceeds of a mortgage loan. The rate is normally higher than the prime rate, and there is usually an origination fee. The effective yield on these loans tends to be high, and the lender has a security interest in the real property. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03.16) -URI https://asc.fasb.org/extlink&oid=126897435&loc=d3e534808-122878 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.19,20,22) -URI https://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03.16) -URI https://asc.fasb.org/extlink&oid=126734703&loc=d3e572229-122910 + Details
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