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Condensed Consolidated Financial Information - Additional Information (Detail) - USD ($) $ in Thousands |  | 9 Months Ended | 12 Months Ended
--- | --- | --- | ---
Sep. 17, 2024 | Sep. 30, 2025 | Sep. 30, 2024 | Dec. 31, 2024
Condensed Financial Statements, Captions [Line Items] |  |  |  |
Gain on merger termination from WillScot Mobile Mini Transaction costs |  |  | $ 118,843 |
Merger Agreement [Member] | WillScot Mobile Mini Holdings Corp [Member] |  |  |  |
Condensed Financial Statements, Captions [Line Items] |  |  |  |
Mini's cash payment upon termination agreement | $ 180,000 |  |  |
Merger agreement termination costs |  | $ 61,200 |  | $ 63,200
Gain on merger termination from WillScot Mobile Mini Transaction costs |  |  |  | 180,000
Proceeds from business acquisition termination |  |  |  | $ 116,800

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