Indebtedness - Summary of Indebtedness at Estimated Fair Value (Details) - USD ($) $ in Thousands		Sep. 30, 2023	Dec. 31, 2022
Debt Instrument [Line Items]
Mortgage Loan Payable		$ 9,520	$ 9,765
Senior Unsecured Notes, Net		850,483	883,444
Unsecured Term Loans		925,000	909,187
Unsecured Credit Facility		275,000	143,000
Total		2,060,003	1,945,396
Carrying Amount (A)
Debt Instrument [Line Items]
Mortgage Loan Payable	[1]	10,059	10,299
Senior Unsecured Notes, Net	[1]	998,523	998,519
Unsecured Term Loans	[1]	925,000	925,000
Unsecured Credit Facility	[1]	275,000	143,000
Total	[1]	$ 2,208,582	$ 2,076,818

[1] The carrying amounts include unamortized discounts and exclude unamortized debt issuance costs.