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Summary of Significant Accounting Policies (Tables) | 12 Months Ended
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Dec. 31, 2024
Accounting Policies [Abstract] |
Estimated Useful Lives and Residual Values of Company's Rental Equipment | The estimated useful lives and residual values of the Company’s rental equipment used for financial reporting purposes are as follows:
Relocatable modular buildings |  | 18 years, 50% residual value
Relocatable modular accessories |  | 3 to 18 years, no residual value
Blast resistant and kitchen modules |  | 20 years, no residual value
Portable storage containers |  | 25 years, 62.5% residual value
Electronic test equipment and accessories |  | 1 to 8 years, no residual value
Property, Plant and Equipment from Continuing Operations | Property, plant and equipment from continuing operations consist of the following:
(dollar amounts in thousands) |  | Estimated useful life |  | December 31, |
|  | in years |  | 2024 |  |  | 2023 |
Land |  | Indefinite |  | $ | 88,605 |  |  | $ | 75,143 |
Land improvements |  | 20 – 50 |  |  | 77,221 |  |  |  | 65,931 |
Buildings |  | 30 |  |  | 40,223 |  |  |  | 35,360 |
Furniture, office equipment and software |  | 3 – 10 |  |  | 28,073 |  |  |  | 30,039 |
Vehicles and machinery |  | 5 – 25 |  |  | 39,259 |  |  |  | 35,233 |
|  |  |  |  | 273,381 |  |  |  | 241,706 |
Less: accumulated depreciation |  |  |  |  | (91,042 | ) |  |  | (87,399 | )
|  |  |  |  | 182,339 |  |  |  | 154,307 |
Construction in progress |  |  |  |  | 15,100 |  |  |  | 14,807 |
|  |  |  | $ | 197,439 |  |  | $ | 169,114 |
Weighted-Average Common Stock Used to Calculate Basic and Diluted Earnings per Share | The table below presents the weighted-average common stock used to calculate basic and diluted earnings per share:
(in thousands) |  | Year Ended December 31, |
|  | 2024 |  |  | 2023 |  |  | 2022 |
Weighted-average common stock for calculating basic earnings per share |  |  | 24,541 |  |  |  | 24,469 |  |  |  | 24,353 |
Effect of potentially dilutive securities from equity-based compensation |  |  | 29 |  |  |  | 60 |  |  |  | 166 |
Weighted-average common stock for calculating diluted earnings per share |  |  | 24,570 |  |  |  | 24,529 |  |  |  | 24,519 |
Summary of Allowance for Credit loss Activity | The allowance for credit loss activity was as follows:
(in thousands) |  | 2024 |  |  | 2023 |
Beginning balance, January 1 |  | $ | 2,801 |  |  | $ | 2,300 |
Provision for credit losses |  |  | 1,890 |  |  |  | 2,633 |
Acquired reserve from Vesta Modular (see Note 4) |  |  | — |  |  |  | 250 |
Derecognition of reserve from discontinued operations (see Note 5) |  |  | — |  |  |  | (450 | )
Write-offs, net of recoveries |  |  | (1,825 | ) |  |  | (1,932 | )
Ending balance, December 31 |  | $ | 2,866 |  |  | $ | 2,801 |

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