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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

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