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Share-Based Compensation (Schedule of Share-Based Compensation Expense) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Share-Based Payment Arrangement [Abstract]
Share-based compensation cost capitalized	$ 500	$ 400	$ 1,800	$ 2,400
Share-based Payment Arrangement, Expensed, Amount [Line Items]
Share-based compensation expense	9,515	13,741	31,309	44,597
Self-storage cost of operations
Share-based Payment Arrangement, Expensed, Amount [Line Items]
Share-based compensation expense	2,964	4,203	10,316	13,740
Ancillary cost of operations
Share-based Payment Arrangement, Expensed, Amount [Line Items]
Share-based compensation expense	320	203	960	690
General and administrative
Share-based Payment Arrangement, Expensed, Amount [Line Items]
Share-based compensation expense	$ 6,231	$ 9,335	$ 20,033	$ 30,167

X

- Definition

Amount of expense for award under share-based payment arrangement. Excludes amount capitalized.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 718
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SAB Topic 14.F)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147479830/718-10-S99-1

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 718
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (h)(1)(i)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480429/718-10-50-2

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Amount of cost capitalized for award under share-based payment arrangement.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 718
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (h)(1)(ii)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480429/718-10-50-2

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