Notes Payable - Terms of Notes Payable (Details) $ in Thousands	1 Months Ended	3 Months Ended
	Jun. 30, 2024 USD ($) option	Jun. 30, 2024 USD ($)	Dec. 31, 2023 USD ($)
Debt Instrument [Line Items]
Notes payable, gross	$ 2,589,824	$ 2,589,824	$ 2,462,068
Unamortized loan costs	(3,092)	(3,092)	(4,441)
Total Notes Payable	2,586,732	$ 2,586,732	2,457,627
Weighted average maturity of notes payable		2 years 7 months 6 days
Unsecured Notes
Debt Instrument [Line Items]
Notes payable, gross	$ 2,067,100	$ 2,067,100	1,935,100
Credit Facility
Debt Instrument [Line Items]
Interest rate	6.19%	6.19%
Notes payable, gross	$ 317,100	$ 317,100	185,100
Term Loan, Unsecured Due In 2025 | Term Loan Unsecured Due 2025
Debt Instrument [Line Items]
Interest rate	5.43%	5.43%
Notes payable, gross	$ 400,000	$ 400,000	400,000
Term Loan, Unsecured Due In 2024 | Term Loan Unsecured Due 2024
Debt Instrument [Line Items]
Interest rate	5.33%	5.33%
Notes payable, gross	$ 350,000	$ 350,000	350,000
Number of extension options | option	4
Extension term	180 days
Senior Note | Senior Note, Unsecured Due 2029
Debt Instrument [Line Items]
Interest rate	3.95%	3.95%
Notes payable, gross	$ 275,000	$ 275,000	275,000
Senior Note | Senior Note, Unsecured Due 2025
Debt Instrument [Line Items]
Interest rate	3.91%	3.91%
Notes payable, gross	$ 250,000	$ 250,000	250,000
Senior Note | Senior Note, Unsecured Due 2028
Debt Instrument [Line Items]
Interest rate	3.86%	3.86%
Notes payable, gross	$ 250,000	$ 250,000	250,000
Senior Note | Senior Note, Unsecured Due 2027
Debt Instrument [Line Items]
Interest rate	3.78%	3.78%
Notes payable, gross	$ 125,000	$ 125,000	125,000
Senior Note | Senior Note, Unsecured Due 2027
Debt Instrument [Line Items]
Interest rate	4.09%	4.09%
Notes payable, gross	$ 100,000	$ 100,000	100,000
Secured Mortgage Notes
Debt Instrument [Line Items]
Notes payable, gross	522,724	522,724	526,968
Total Notes Payable	$ 522,700	$ 522,700
Secured Mortgage Notes | Terminus
Debt Instrument [Line Items]
Interest rate	6.34%	6.34%
Notes payable, gross	$ 221,000	$ 221,000	221,000
Secured Mortgage Notes | Terminus 100
Debt Instrument [Line Items]
Notes payable, gross	123,000	123,000
Secured Mortgage Notes | Terminus 200
Debt Instrument [Line Items]
Notes payable, gross	$ 98,000	$ 98,000
Secured Mortgage Notes | Fifth Third Center
Debt Instrument [Line Items]
Interest rate	3.37%	3.37%
Notes payable, gross	$ 124,691	$ 124,691	126,548
Secured Mortgage Notes | Colorado Tower
Debt Instrument [Line Items]
Interest rate	3.45%	3.45%
Notes payable, gross	$ 105,484	$ 105,484	106,862
Secured Mortgage Notes | Domain 10
Debt Instrument [Line Items]
Interest rate	3.75%	3.75%
Notes payable, gross	$ 71,549	$ 71,549	$ 72,558