Borrowing Arrangements - Narratives (Details)	6 Months Ended	12 Months Ended
	Jun. 30, 2024 USD ($) property	Dec. 31, 2022 USD ($)	Apr. 30, 2024 USD ($)	Dec. 31, 2023 USD ($) property	Apr. 30, 2023 USD ($)	Mar. 31, 2023 USD ($)	Mar. 31, 2021 USD ($)
Debt Instrument
Investment in real estate	$ 5,260,858,000			$ 5,257,415,000
Unsecured line of credit	14,000,000			31,000,000
Asset Pledged as Collateral
Debt Instrument
Investment in real estate	3,227,100,000			3,194,100,000
Line of Credit | Revolving Credit Facility
Debt Instrument
Line of credit facility, maximum borrowing capacity	500,000,000
Option to increase borrowing capacity	$ 200,000,000
Variable rate basis adjustment (percent)	0.10%
Unsecured line of credit	$ 14,000,000.0			$ 31,000,000.0
Line of credit, remaining borrowing amount	$ 485,900,000
Minimum | Line of Credit | Revolving Credit Facility
Debt Instrument
Debt instrument, variable rate (percent)	1.25%
Annual facility fee (percent)	0.20%
Maximum | Line of Credit | Revolving Credit Facility
Debt Instrument
Debt instrument, variable rate (percent)	1.65%
Annual facility fee (percent)	0.35%
Secured Mortgage Notes Payable
Debt Instrument
Weighted average interest rate (percent)	3.90%
Number of pledged properties | property	120			120
Secured Mortgage Notes Payable | Minimum | Secured Debt
Debt Instrument
Stated interest rate (percent)	2.40%
Secured Mortgage Notes Payable | Maximum | Secured Debt
Debt Instrument
Stated interest rate (percent)	5.10%
Senior Unsecured Term Loan | Unsecured Debt
Debt Instrument
Debt face amount	$ 300,000,000	$ 200,000,000	$ 300,000,000.0		$ 200,000,000	$ 300,000,000	$ 300,000,000
Variable rate basis adjustment (percent)	0.10%	0.10%
Senior Unsecured Term Loan | Minimum | Unsecured Debt
Debt Instrument
Debt instrument, variable rate (percent)	1.40%	1.20%
Senior Unsecured Term Loan | Maximum | Unsecured Debt
Debt Instrument
Debt instrument, variable rate (percent)	1.95%	1.70%