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v3.25.1

Segment Information - Summary of segment's internal financial reports (Details) - USD ($) $ in Thousands | 3 Months Ended
--- | ---
Mar. 31, 2025 | Mar. 31, 2024
Segment Reporting Information [Line Items] |  |
Contract revenues | $ 833,620 | $ 815,562
Operating costs | 799,330 | 791,291
Income from operations | 34,290 | 24,271
Interest income | 191 | 142
Interest expense | (1,414) | (1,054)
Other expense, net | (300) | (263)
Income before provision for income taxes | 32,767 | 23,096
Income tax expense | 9,459 | 4,157
Net income | 23,308 | 18,939
Corporate, Non-Segment |  |
Segment Reporting Information [Line Items] |  |
Operating costs | 19,308 | 16,989
Income from operations | (19,308) | (16,989)
T&D |  |
Segment Reporting Information [Line Items] |  |
Contract revenues | 461,769 | 490,395
T&D | Operating Segments |  |
Segment Reporting Information [Line Items] |  |
Operating costs | 425,548 | 460,558
Income from operations | 36,221 | 29,837
C&I |  |
Segment Reporting Information [Line Items] |  |
Contract revenues | 371,851 | 325,167
C&I | Operating Segments |  |
Segment Reporting Information [Line Items] |  |
Operating costs | 354,474 | 313,744
Income from operations | $ 17,377 | $ 11,423

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