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Intangible Assets | 12 Months Ended
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Dec. 31, 2024
Goodwill and Intangible Assets Disclosure [Abstract] |
Intangible Assets | 12. Intangible Assets Indefinite-lived Intangible Assets Indefinite-lived intangible assets primarily consist of goodwill. The following table presents the goodwill balance by reportable segment:
(in thousands) | December 31, 2024 |  | December 31, 2023
Construction | $ | 134,977 |  |  | $ | 130,569 |
Materials | 79,488 |  |  | 24,435 |
Total goodwill | $ | 214,465 |  |  | $ | 155,004 |
During 2024, total goodwill increased by approximately $67.9 million related to the acquisition of D&B. This increase was partially offset by a decrease of $8.1 million in goodwill as a result of our finalization of the LRC/MSG acquisition purchase price allocation in the third quarter of 2024. See Note 2 for additional information. Identifiable Intangible Assets As of December 31, 2024 and 2023, net identifiable intangible assets were $127.9 million and $117.2 million, respectively, net of accumulated amortization of $38.9 million and $24.8 million, respectively. The intangible assets balances in the consolidated balance sheets as of December 31, 2024 and 2023 also included an immaterial amount of indefinite-lived intangible assets. The increase in the 2024 identifiable intangible assets balance was primarily related to the D&B acquisition (see Note 2) which contributed $27.9 million of identifiable intangible assets. Of this, $18.2 million were customer relationship intangibles. The net amortization expense related to identifiable intangible assets for each of the years ended December 31, 2024, 2023 and 2022 was $14.1 million, $2.3 million and $2.0 million, respectively, and was primarily included in cost of revenue in the consolidated statements of operations. Amortization expense based on the identifiable intangible assets balance at December 31, 2024 is expected to be $9.4 million in 2025, $9.0 million in 2026, $8.6 million in 2027, $8.4 million in 2028, $8.4 million in 2029 and $84.1 million thereafter.

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- Definition The entire disclosure for goodwill and intangible assets. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 350 -SubTopic 30 -Name Accounting Standards Codification -Publisher FASB -URI https://asc.fasb.org/350-30/tableOfContent Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 350 -SubTopic 20 -Name Accounting Standards Codification -Publisher FASB -URI https://asc.fasb.org/350-20/tableOfContent + Details
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