Investments in and Advances to Affiliates (Details) $ in Thousands	3 Months Ended			9 Months Ended
	Sep. 30, 2023 USD ($)	Mar. 31, 2023 USD ($)	Sep. 30, 2022 USD ($)	Sep. 30, 2023 USD ($)	Sep. 30, 2022 USD ($)	Dec. 31, 2022 numberOfJointVentures
Schedule of Equity Method Investments [Line Items]
Gain on deconsolidation of affiliate	$ 0		$ 0	$ 11,778	$ 0
Number of joint ventures formed | numberOfJointVentures						2
Highwoods-Markel Associates, LLC Joint Venture
Schedule of Equity Method Investments [Line Items]
Percentage of equity interest in joint venture (in hundredths)	50.00%			50.00%
Gain on deconsolidation of affiliate		$ 11,800
Granite Park Six JV, LLC
Schedule of Equity Method Investments [Line Items]
Percentage of equity interest in joint venture (in hundredths)	50.00%			50.00%
GPI23 Springs JV, LLC
Schedule of Equity Method Investments [Line Items]
Percentage of equity interest in joint venture (in hundredths)	50.00%			50.00%
M+O JV, LLC
Schedule of Equity Method Investments [Line Items]
Percentage of equity interest in joint venture (in hundredths)	50.00%			50.00%
Midtown East Tampa, LLC
Schedule of Equity Method Investments [Line Items]
Percentage of equity interest in joint venture (in hundredths)	50.00%			50.00%
Brand/HRLP 2827 Peachtree LLC
Schedule of Equity Method Investments [Line Items]
Percentage of equity interest in joint venture (in hundredths)	50.00%			50.00%