Reportable Segments - Net Operating Income (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Segment Reporting Information [Line Items]
Net Operating Income	$ 138,625	$ 130,136
Office
Segment Reporting Information [Line Items]
Net Operating Income	137,304	128,704
Non-Office
Segment Reporting Information [Line Items]
Net Operating Income	1,321	1,432
Atlanta
Segment Reporting Information [Line Items]
Net Operating Income	49,411	47,659
Atlanta | Office
Segment Reporting Information [Line Items]
Net Operating Income	49,158	47,389
Atlanta | Non-Office
Segment Reporting Information [Line Items]
Net Operating Income	253	270
Austin
Segment Reporting Information [Line Items]
Net Operating Income	45,770	40,273
Austin | Office
Segment Reporting Information [Line Items]
Net Operating Income	45,770	40,273
Austin | Non-Office
Segment Reporting Information [Line Items]
Net Operating Income	0	0
Charlotte
Segment Reporting Information [Line Items]
Net Operating Income	11,434	11,924
Charlotte | Office
Segment Reporting Information [Line Items]
Net Operating Income	10,366	10,762
Charlotte | Non-Office
Segment Reporting Information [Line Items]
Net Operating Income	1,068	1,162
Dallas
Segment Reporting Information [Line Items]
Net Operating Income	3,459	3,225
Dallas | Office
Segment Reporting Information [Line Items]
Net Operating Income	3,459	3,225
Dallas | Non-Office
Segment Reporting Information [Line Items]
Net Operating Income	0	0
Phoenix
Segment Reporting Information [Line Items]
Net Operating Income	11,111	11,773
Phoenix | Office
Segment Reporting Information [Line Items]
Net Operating Income	11,111	11,773
Phoenix | Non-Office
Segment Reporting Information [Line Items]
Net Operating Income	0	0
Tampa
Segment Reporting Information [Line Items]
Net Operating Income	11,945	11,711
Tampa | Office
Segment Reporting Information [Line Items]
Net Operating Income	11,945	11,711
Tampa | Non-Office
Segment Reporting Information [Line Items]
Net Operating Income	0	0
Other markets
Segment Reporting Information [Line Items]
Net Operating Income	5,495	3,571
Other markets | Office
Segment Reporting Information [Line Items]
Net Operating Income	5,495	3,571
Other markets | Non-Office
Segment Reporting Information [Line Items]
Net Operating Income	$ 0	$ 0