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Goodwill and Related Intangible Assets (Tables) | 12 Months Ended
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Dec. 31, 2023
Goodwill and Intangible Assets Disclosure [Abstract] |
Schedule of Changes in Carrying Amount of Goodwill | The changes in the carrying amount of goodwill for the years ended December 31 were as follows (in thousands):
| Renewables |  | Residential |  | Agtech |  | Infrastructure |  | Total
Balance at December 31, 2021 | $ | 188,680 |  |  | $ | 205,452 |  |  | $ | 85,132 |  |  | $ | 31,678 |  |  | $ | 510,942 |
Acquired goodwill | — |  |  | 3,604 |  |  | — |  |  | — |  |  | 3,604 |
Adjustment to prior year acquisition | 904 |  |  | — |  |  | — |  |  | — |  |  | 904 |
Foreign currency translation | (1,554) |  |  | — |  |  | (1,533) |  |  | — |  |  | (3,087) |
Balance at December 31, 2022 | 188,030 |  |  | 209,056 |  |  | 83,599 |  |  | 31,678 |  |  | 512,363 |
Acquired goodwill | — |  |  | 4,133 |  |  | — |  |  | — |  |  | 4,133 |
Adjustment to prior year acquisition | — |  |  | 387 |  |  | — |  |  | — |  |  | 387 |
Foreign currency translation | (1,132) |  |  | — |  |  | 300 |  |  | — |  |  | (832) |
Sale of business | (2,668) |  |  | — |  |  | — |  |  | — |  |  | (2,668) |
Balance at December 31, 2023 | $ | 184,230 |  |  | $ | 213,576 |  |  | $ | 83,899 |  |  | $ | 31,678 |  |  | $ | 513,383 |
Schedule of Acquired Intangible Assets | Acquired intangible assets consisted of the following (in thousands):
| December 31, 2023 |  | December 31, 2022 |  |
| Gross Carrying Amount |  | Accumulated Amortization |  | Gross Carrying Amount |  | Accumulated Amortization |  |
Indefinite-lived intangible assets: |  |  |  |  |  |  |  |  |
Trademarks | $ | 52,300 |  |  | $ | — |  |  | $ | 55,500 |  |  | $ | — |  |  |
Finite-lived intangible assets: |  |  |  |  |  |  |  |  |
Trademarks | 5,773 |  |  | 4,714 |  |  | 5,448 |  |  | 4,481 |  |  |
Unpatented technology | 34,133 |  |  | 24,295 |  |  | 34,163 |  |  | 22,037 |  |  |
Customer relationships | 110,649 |  |  | 48,088 |  |  | 115,125 |  |  | 46,557 |  |  |
Non-compete agreements | 2,376 |  |  | 2,154 |  |  | 2,371 |  |  | 2,006 |  |  |
| 152,931 |  |  | 79,251 |  |  | 157,107 |  |  | 75,081 |  |  |
Total acquired intangible assets | $ | 205,231 |  |  | $ | 79,251 |  |  | $ | 212,607 |  |  | $ | 75,081 |  |  |
Schedule of Intangible Assets Amortization Expense | The following table summarizes amortization expense for the years ended December 31 (in thousands):
| 2023 |  | 2022 |  | 2021
Amortization expense | $ | 11,239 |  |  | $ | 11,584 |  |  | $ | 18,856 |
Schedule of Amortization Expense | Amortization expense related to acquired intangible assets for the next five years ended December 31 is estimated as follows (in thousands):
|  | 2024 |  | 2025 |  | 2026 |  | 2027 |  | 2028
| Amortization expense | $ | 10,599 |  |  | $ | 10,386 |  |  | $ | 9,320 |  |  | $ | 7,979 |  |  | $ | 7,184 |

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