Goodwill and Intangible Assets - Goodwill (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Goodwill
Goodwill, Beginning Balance	$ 857,650	$ 871,808
Goodwill adjustments during the period	(781)	(14,158)
Goodwill, Ending Balance	856,869	857,650	$ 871,808
Goodwill written off related to sale of business unit	800
Goodwill impairment	0	0	0
Utilities
Goodwill
Goodwill, Beginning Balance	703,462	716,284
Goodwill adjustments during the period		(12,822)
Goodwill, Ending Balance	703,462	703,462	716,284
Energy
Goodwill
Goodwill, Beginning Balance	154,188	155,524
Goodwill adjustments during the period	(781)	(1,336)
Goodwill, Ending Balance	$ 153,407	$ 154,188	$ 155,524