Segment Information - Summary of Segment Assets (Details) - USD ($) $ in Thousands	Jun. 30, 2025	Dec. 31, 2024
Segment Reporting Information [Line Items]
Total assets	$ 1,481,377	$ 1,288,463
Operating segments
Segment Reporting Information [Line Items]
Total assets	1,371,021	1,175,357
Operating segments | Electrical & Mechanical
Segment Reporting Information [Line Items]
Total assets	938,959	764,470
Operating segments | Transmission & Distribution
Segment Reporting Information [Line Items]
Total assets	432,062	410,887
Corporate and Other
Segment Reporting Information [Line Items]
Total assets	139,181	161,016
Eliminations
Segment Reporting Information [Line Items]
Total assets	$ (28,825)	$ (47,910)