Debt - Schedule of Debt (Details)	9 Months Ended	12 Months Ended
	Sep. 30, 2022 USD ($) extension	Dec. 31, 2021 USD ($)
Debt Instrument [Line Items]
Weighted average rate (percent)	3.69%
Discounts and unamortized debt issuance costs	$ (13,592,000)	$ (12,210,000)
Total/Weighted Average	2,145,408,000	1,877,790,000
$250 Million Unsecured 2018 Term Loan | Interest rate swaps
Debt Instrument [Line Items]
Notional amount of interest rate swap agreements	100,000,000
Secured Debt
Debt Instrument [Line Items]
Total/Weighted Average	197,000,000	0
Secured Debt | $197 Million Fixed Rate Mortgage
Debt Instrument [Line Items]
Debt instrument, face amount	$ 197,000,000
Stated rate (percent)	4.10%
Amount outstanding, gross	$ 197,000,000	0
Unsecured Debt
Debt Instrument [Line Items]
Weighted average rate (percent)	3.65%
Discounts and unamortized debt issuance costs	$ (13,592,000)	(12,210,000)
Total/Weighted Average	1,948,408,000	1,877,790,000
Unsecured Debt | $200 Million Unsecured Term Loan Facility
Debt Instrument [Line Items]
Debt instrument, face amount	$ 200,000,000
Effective interest rate (percent)	4.13%
Amount outstanding, gross	$ 200,000,000	0
Maximum extension period (in years)	6 months
Number of extension periods | extension	2
Extension period (in months)	3 months
Unsecured Debt | $200 Million Unsecured Term Loan Facility | SOFR
Debt Instrument [Line Items]
Basis spread on variable rate	1.00%
Unsecured Debt | $350 Million Unsecured Senior Notes due 2023
Debt Instrument [Line Items]
Debt instrument, face amount	$ 350,000,000
Stated rate (percent)	3.40%
Effective interest rate (percent)	3.43%
Amount outstanding, gross	$ 350,000,000	350,000,000
Unsecured Debt | $400 Million Unsecured Senior Notes due 2024
Debt Instrument [Line Items]
Debt instrument, face amount	$ 400,000,000
Stated rate (percent)	4.45%
Effective interest rate (percent)	4.10%
Amount outstanding, gross	$ 400,000,000	400,000,000
Unsecured Debt | $250 Million Unsecured 2018 Term Loan
Debt Instrument [Line Items]
Debt instrument, face amount	$ 250,000,000
Effective interest rate (percent)	3.86%
Amount outstanding, gross	$ 250,000,000	250,000,000
Interest rate on derivative instrument	3.56%
Unsecured Debt | $250 Million Unsecured 2018 Term Loan | London Interbank Offered Rate (LIBOR)
Debt Instrument [Line Items]
Basis spread on variable rate	0.95%
Unsecured Debt | $600 Million Unsecured 2022 Line of Credit | Line of Credit
Debt Instrument [Line Items]
Debt instrument, face amount	$ 600,000,000
Effective interest rate (percent)	3.86%
Amount outstanding, gross	$ 162,000,000	290,000,000
Maximum extension period (in years)	1 year
Extension period (in months)	6 months
Unsecured Debt | $600 Million Unsecured 2022 Line of Credit | SOFR | Line of Credit
Debt Instrument [Line Items]
Basis spread on variable rate	1.00%
Unsecured Debt | $600 Million Unsecured 2022 Line of Credit | Adjusted SOFR | Line of Credit
Debt Instrument [Line Items]
Basis spread on variable rate	0.85%
Unsecured Debt | $300 Million Unsecured Senior Notes due 2030
Debt Instrument [Line Items]
Debt instrument, face amount	$ 300,000,000
Stated rate (percent)	3.15%
Effective interest rate (percent)	3.90%
Amount outstanding, gross	$ 300,000,000	300,000,000
Unsecured Debt | $300 Million Unsecured Senior Notes due 2032
Debt Instrument [Line Items]
Debt instrument, face amount	$ 300,000,000
Stated rate (percent)	2.75%
Effective interest rate (percent)	2.78%
Amount outstanding, gross	$ 300,000,000	300,000,000
Unsecured Debt | Unsecured 500 Million 2018 Line Of Credit | Line of Credit
Debt Instrument [Line Items]
Debt instrument, face amount	$ 500,000,000	$ 500,000,000
Maximum extension period (in years)	1 year
Number of extension periods | extension	2
Extension period (in months)	6 months
Unsecured Debt | Unsecured 500 Million 2018 Line Of Credit | London Interbank Offered Rate (LIBOR) | Line of Credit
Debt Instrument [Line Items]
Basis spread on variable rate		0.90%