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Summary of Significant Accounting Policies - Additional Information (Detail) |  | 3 Months Ended | 12 Months Ended |
--- | --- | --- | --- | ---
Jan. 28, 2024 USD ($) shares $ / shares | Dec. 31, 2023 USD ($) $ / shares shares | Dec. 31, 2023 USD ($) Segment Division $ / shares shares | Dec. 31, 2022 USD ($) $ / shares shares | Dec. 31, 2021 USD ($) shares | Aug. 31, 2015 shares
Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |  |
Number of divisions | Division |  |  | 3 |  |  |
Number of reportable segments | Segment |  |  | 4 |  |  |
Common stock, par value | $ / shares |  | $ 0 | $ 0 | $ 0 |  |
Impairments of long-lived assets |  |  | $ 0 | $ 0 | $ 0 |
Period for warranties for rental equipment |  |  | 90 days |  |  |
Period for warranties for equipment manufactured |  |  | 1 year |  |  |
Property, plant and equipment depreciation expenses |  |  | $ 9,700,000 | 9,000,000 | 8,900,000 |
Capitalized in internal use of software |  |  |  | 100,000 |  |
Total advertising expenses |  |  | 5,900,000 | 5,000,000 | 5,100,000 |
Goodwill and trade name intangible assets |  | $ 323,200,000 | 323,200,000 | 106,400,000 |  |
Impairment charges |  |  |  | $ 0 | $ 0 |
Goodwill and intangible assets impairment charge |  | $ 0 | $ 0 |  |  |
Anti-dilutive securities excluded from computation of diluted earnings per share | shares |  |  | 0 | 0 | 0 |
Common stock shares authorized for repurchase | shares |  |  |  |  |  | 2,000,000
Common stock repurchased | shares |  |  | 0 | 0 | 0 |
Shares remain authorized for repurchase | shares |  | 1,309,805 | 1,309,805 |  |  |
Unbilled receivables related to end-of-lease services |  | $ 59,500,000 | $ 59,500,000 | $ 52,600,000 |  |
Period for credit risk identified |  |  | 30 days |  |  |
Accounts receivable, credit loss |  |  | $ 2,633,000 | 837,000 | $ 451,000 |
Allowance for credit losses |  | 2,801,000 | 2,801,000 | 2,300,000 | $ 2,125,000 |
Net investment in sales-type leases |  | 3,700,000 | 3,700,000 | 4,500,000 |  |
Credit loss expense |  |  | 0 |  |  |
Estimated fair value notes payable |  | 169,200,000 | 169,200,000 | 89,300,000 |  |
Recorded fair value of notes payable |  | 175,000,000 | 175,000,000 | $ 100,000,000 |  |
Subsequent Event [Member] | First-Step Merger [Member] | WillScot Mobile Mini Holdings Corp [Member] |  |  |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |  |
Par value | $ / shares | $ 0.0001 |  |  |  |  |
Par value issued and outstanding prior to effective time | $ / shares | $ 0 |  |  |  |  |
Business acquisition, per share cash consideration | $ 123 |  |  |  |  |
Business acquisition, exchange ratio | shares | 2.8211 |  |  |  |  |
Business acquisition, consideration transferred cash percent | 60.00% |  |  |  |  |
Business acquisition, consideration transferred stock percent | 40.00% |  |  |  |  |
Minimum [Member] |  |  |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |  |
Capitalized in internal use of software |  | $ 200,000 | $ 200,000 |  |  |
Sales-type leases terms |  | 12 months | 12 months |  |  |
Maximum [Member] |  |  |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |  |
Sales-type leases terms |  | 36 months | 36 months |  |  |

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