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Write-off of amounts previously capitalized as debt issuance cost in an extinguishment of debt.

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Debt - Narrative (Details) $ in Thousands	1 Months Ended		3 Months Ended		6 Months Ended		12 Months Ended
Debt - Narrative (Details) $ in Thousands	May 31, 2021 USD ($)	Aug. 31, 2020 USD ($)	Jun. 30, 2022 USD ($) property	Jun. 30, 2021 USD ($)	Jun. 30, 2022 USD ($)	Jun. 30, 2021 USD ($)	Dec. 31, 2021 USD ($)	Dec. 31, 2019 USD ($)	Oct. 31, 2019 USD ($)	Mar. 31, 2019 USD ($)	Sep. 30, 2018 USD ($)	Sep. 30, 2017 USD ($)	Jul. 31, 2016 USD ($)	May 31, 2015 USD ($)	Nov. 18, 2014 USD ($)
Debt Instrument [Line Items]
Long-term Debt, Gross			$ 1,954,467		$ 1,954,467
Amount of gain (loss) on early extinguishment of debt				$ (14,614)		$ (14,614)
Write off of Deferred Debt Issuance Cost						1,250
Mortgage notes assumed			42,300		42,300
Maximum [Member]
Debt Instrument [Line Items]
Reimbursement Agreement, Amount															$ 14,000
Reimbursement Agreement, Debt Covenant, Assets Value															$ 14,000
Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Long-term Debt, Gross			370,000		370,000
Mortgages [Member]
Debt Instrument [Line Items]
Long-term Debt, Gross			74,467		74,467		$ 32,635
Debt Instrument, Collateral Amount			$ 113,800		$ 113,800
Long-term Debt, Weighted Average Interest Rate			3.85%		3.85%		4.16%
Mortgages [Member] \| Property Acquisition [Member]
Debt Instrument [Line Items]
Number of properties acquired \| property			4
Mortgage notes assumed					$ 42,300
Unamortized debt issuance costs and original issue discount			$ 2,500		$ 2,500
Debt Instrument, Interest Rate, Stated Percentage			3.63%		3.63%
Senior Unsecured Debt [Member]
Debt Instrument [Line Items]
Long-term Debt, Gross			$ 1,510,000		$ 1,510,000		$ 1,510,000
Amount of gain (loss) on early extinguishment of debt						14,600
Swap Termination Costs						13,400
Write off of Deferred Debt Issuance Cost						$ 1,200
Unamortized debt issuance costs and original issue discount			13,899		13,899		14,800
Senior Unsecured Debt [Member] \| Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Debt Instrument, Face Amount							1,000,000	$ 500,000
Debt Instrument, Accordion Option Additional Lender Commitments, Maximum							$ 1,750,000
Senior Unsecured Debt [Member] \| Revolving Credit Facility [Member] \| LIBOR [Member]
Debt Instrument [Line Items]
Spread on variable rate							0.775%
Senior Unsecured Debt [Member] \| Revolving Credit Facility [Member] \| Minimum [Member] \| LIBOR [Member]
Debt Instrument [Line Items]
Spread on variable rate							0.725%
Senior Unsecured Debt [Member] \| Revolving Credit Facility [Member] \| Maximum [Member] \| LIBOR [Member]
Debt Instrument [Line Items]
Spread on variable rate							1.40%
Senior Unsecured Debt [Member] \| Senior Unsecured Note 2025 and 2027 [Member]
Debt Instrument [Line Items]
Debt Instrument, Face Amount														$ 100,000
Senior Unsecured Debt [Member] \| 2025 Senior Unsecured Notes [Member]
Debt Instrument [Line Items]
Long-term Debt, Gross			50,000		50,000		$ 50,000
Debt Instrument, Face Amount														$ 50,000
Debt Instrument, Interest Rate, Stated Percentage														4.16%
Senior Unsecured Debt [Member] \| 2027 Senior Unsecured Notes [Member]
Debt Instrument [Line Items]
Long-term Debt, Gross			50,000		50,000		50,000
Debt Instrument, Face Amount														$ 50,000
Debt Instrument, Interest Rate, Stated Percentage														4.26%
Senior Unsecured Debt [Member] \| 2028 Senior Unsecured Notes [Member]
Debt Instrument [Line Items]
Long-term Debt, Gross			60,000		60,000		60,000
Debt Instrument, Face Amount	$ 350,000												$ 60,000
Debt Instrument, Interest Rate, Stated Percentage	2.00%												4.42%
Senior Unsecured Debt [Member] \| 2028 Senior Unsecured Notes [Member] \| Blended All-In Including Interest Rate Swap [Member]
Debt Instrument [Line Items]
Debt Instrument, Face Amount	$ 350,000
Debt Instrument, Interest Rate, Effective Percentage	2.11%
Senior Unsecured Debt [Member] \| 2029 Senior Unsecured Notes [Member]
Debt Instrument [Line Items]
Long-term Debt, Gross			100,000		100,000		100,000
Debt Instrument, Face Amount												$ 100,000
Debt Instrument, Interest Rate, Stated Percentage												4.19%
Senior Unsecured Debt [Member] \| 2030 Senior Unsecured Notes [Member]
Debt Instrument [Line Items]
Long-term Debt, Gross			125,000		125,000		125,000
Debt Instrument, Face Amount											$ 125,000
Debt Instrument, Interest Rate, Stated Percentage											4.32%
Senior Unsecured Debt [Member] \| 2030 Senior Unsecured Notes [Member] \| Interest rate swap
Debt Instrument [Line Items]
Payment on Termination on Agreement		$ 23,400
Senior Unsecured Debt [Member] \| 2030 Senior Unsecured Public Notes [Member]
Debt Instrument [Line Items]
Long-term Debt, Gross			350,000		350,000		350,000
Debt Instrument, Face Amount		$ 350,000
Debt Instrument, Interest Rate, Stated Percentage		2.90%
Senior Unsecured Debt [Member] \| 2030 Senior Unsecured Public Notes [Member] \| Interest rate swap
Debt Instrument [Line Items]
Derivative Notional Amount, Terminated		$ 200,000
Senior Unsecured Debt [Member] \| 2030 Senior Unsecured Public Notes [Member] \| Blended All-In Including Interest Rate Swap [Member]
Debt Instrument [Line Items]
Debt Instrument, Face Amount		$ 350,000
Debt Instrument, Interest Rate, Effective Percentage		3.49%
Senior Unsecured Debt [Member] \| 2031 Senior Unsecured Notes [Member]
Debt Instrument [Line Items]
Long-term Debt, Gross			125,000		125,000		125,000
Debt Instrument, Face Amount									$ 125,000	$ 100,000
Debt Instrument, Interest Rate, Stated Percentage									4.47%	4.41%
Senior Unsecured Debt [Member] \| 2031 Senior Unsecured Notes [Member] \| Blended All-In Including Interest Rate Swap [Member]
Debt Instrument [Line Items]
Debt Instrument, Face Amount										$ 125,000
Debt Instrument, Interest Rate, Stated Percentage										4.42%
Senior Unsecured Debt [Member] \| 2033 Senior Unsecured Public Notes [Member]
Debt Instrument [Line Items]
Long-term Debt, Gross			$ 300,000		$ 300,000		$ 300,000
Debt Instrument, Face Amount	$ 300,000
Debt Instrument, Interest Rate, Stated Percentage	2.60%
Senior Unsecured Debt [Member] \| 2033 Senior Unsecured Public Notes [Member] \| Interest rate swap
Debt Instrument [Line Items]
Derivative Notional Amount, Terminated	$ 300,000
Proceeds From Termination	16,700
Senior Unsecured Debt [Member] \| 2033 Senior Unsecured Public Notes [Member] \| Blended All-In Including Interest Rate Swap [Member]
Debt Instrument [Line Items]
Debt Instrument, Face Amount	$ 300,000
Debt Instrument, Interest Rate, Effective Percentage	2.13%
Senior Unsecured Debt [Member] \| 2024 Term Loan Facility One [Member] \| Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Debt Instrument, Face Amount								65,000
Senior Unsecured Debt [Member] \| 2024 Term Loan Facility Two [Member] \| Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Debt Instrument, Face Amount								$ 35,000