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Goodwill and Related Intangible Assets (Tables) | 6 Months Ended
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Jun. 30, 2021
Goodwill and Intangible Assets Disclosure [Abstract] |
Schedule Of Changes In Carrying Amount Of Goodwill | The changes in the carrying amount of goodwill for the six months ended June 30, 2021 are as follows (in thousands):
| Renewables |  | Residential |  | Agtech |  | Infrastructure |  | Total
Balance at December 31, 2020 | $ | 192,527 |  |  | $ | 205,452 |  |  | $ | 84,622 |  |  | $ | 31,678 |  |  | $ | 514,279 |
Adjustments to prior year acquisitions | (4,593) |  |  | — |  |  | — |  |  | — |  |  | (4,593) |
Foreign currency translation | (990) |  |  | — |  |  | 161 |  |  | — |  |  | (829) |
Balance at June 30, 2021 | $ | 186,944 |  |  | $ | 205,452 |  |  | $ | 84,783 |  |  | $ | 31,678 |  |  | $ | 508,857 |
Schedule Of Acquired Intangible Assets | Acquired intangible assets consist of the following (in thousands):
| June 30, 2021 |  | December 31, 2020 |  |
| Gross Carrying Amount |  | Accumulated Amortization |  | Gross Carrying Amount |  | Accumulated Amortization |  |
Indefinite-lived intangible assets: |  |  |  |  |  |  |  |  |
Trademarks | $ | 61,100 |  |  | $ | — |  |  | $ | 56,570 |  |  | $ | — |  |  |
Finite-lived intangible assets: |  |  |  |  |  |  |  |  |
Trademarks | 5,550 |  |  | 3,747 |  |  | 5,818 |  |  | 3,385 |  |  |
Unpatented technology | 38,386 |  |  | 19,194 |  |  | 38,752 |  |  | 17,765 |  |  |
Customer relationships | 109,329 |  |  | 35,658 |  |  | 98,500 |  |  | 31,580 |  |  |
Non-compete agreements | 2,691 |  |  | 1,859 |  |  | 4,885 |  |  | 1,747 |  |  |
Backlog | 7,216 |  |  | 4,080 |  |  | 7,228 |  |  | 911 |  |  |
| 163,172 |  |  | 64,538 |  |  | 155,183 |  |  | 55,388 |  |  |
Total acquired intangible assets | $ | 224,272 |  |  | $ | 64,538 |  |  | $ | 211,753 |  |  | $ | 55,388 |  |  |
Schedule of Acquired Intangible Asset Amortization Expense | The following table summarizes the acquired intangible asset amortization expense for the three and six months ended June 30 (in thousands):
| Three Months Ended June 30, |  | Six Months Ended June 30,
| 2021 |  | 2020 |  | 2021 |  | 2020
Amortization expense | $ | 4,736 |  |  | $ | 2,018 |  |  | $ | 9,479 |  |  | $ | 4,002 |
Schedule Of Amortization Expense | Amortization expense related to acquired intangible assets for the remainder of fiscal 2021 and the next five years thereafter is estimated as follows (in thousands):
| 2021 |  | 2022 |  | 2023 |  | 2024 |  | 2025 |  | 2026
Amortization expense | $ | 9,414 |  |  | $ | 12,167 |  |  | $ | 11,236 |  |  | $ | 11,055 |  |  | $ | 10,820 |  |  | $ | 9,186 |

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- Definition Tabular disclosure of the characteristics, including initial carrying value, residual amount, weighted average useful life, of finite-lived intangible assets acquired during the period by major class. A major class is composed of intangible assets that can be grouped together because they are similar, either by nature or by their use in the operations of the company. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16265-109275 + Details
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