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Goodwill and Intangible Assets (Tables) | 12 Months Ended
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Dec. 31, 2023
Goodwill and Intangible Assets Disclosure [Abstract] |
Summary of Changes in Carrying Amount of Goodwill | Changes in the carrying amount of goodwill were as follows:
(dollar amounts in thousands) |  | Mobile Modular |  |  | Adler Tanks (Discontinued) |  |  | Total |
Balance at December 31, 2021 |  | $ | 106,491 |  |  | $ | 25,902 |  |  | $ | 132,393 |
Changes to Design Space purchase accounting |  |  | (88 | ) |  |  | — |  |  |  | (88 | )
Balance at December 31, 2022 |  |  | 106,403 |  |  |  | 25,902 |  |  |  | 132,305 |
Goodwill acquired through business combination |  |  | 216,821 |  |  |  | — |  |  |  | 216,821 |
Derecognition of goodwill divested |  |  | — |  |  |  | (25,902 | ) |  |  | (25,902 | )
Balance at December 31, 2023 |  | $ | 323,224 |  |  | $ | — |  |  | $ | 323,224 |
Summary of Intangible Assets from Continuing Operations | Intangible assets from continuing operations consist of the following:
(dollar amounts in thousands) |  | Estimated useful life in years |  | Average remaining life in years |  | Cost |  | Accumulated amortization |  | Net book value
December 31, 2023 |  |  |  |  |  |  |  |  |  |
Customer relationships |  | 8 to 11 |  | 7.8 |  | $73,217 |  | $(17,003) |  | $56,214
Non-compete agreements |  | 5 |  | 3.7 |  | 10,556 |  | (3,141) |  | 7,415
Trade name |  | 0.75 to 8 |  | 5.3 |  | 2,000 |  | (1,212) |  | 788
Total amortizing |  |  |  |  |  | 85,773 |  | (21,356) |  | 64,417
Trade name - non-amortizing |  | Indefinite |  |  |  | 171 |  | — |  | 171
Total |  |  |  |  |  | $85,944 |  | $(21,356) |  | $64,588
December 31, 2022 |  |  |  |  |  |  |  |  |  |
Customer relationships |  | 8 to 11 |  | 6.3 |  | $50,284 |  | $(18,098) |  | $32,186
Non-compete agreements |  | 5 |  | 3.2 |  | 3,296 |  | (1,159) |  | 2,137
Customer backlog |  | — |  | — |  | 1,900 |  | (1,900) |  | —
Trade name |  | 8 |  | 6.3 |  | 1,200 |  | (263) |  | 937
Total amortizing |  |  |  |  |  | 56,680 |  | (21,420) |  | 35,260
Trade name - non-amortizing |  | Indefinite |  |  |  | 5,871 |  | — |  | 5,871
Total |  |  |  |  |  | $62,551 |  | $(21,420) |  | $41,131

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