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Goodwill and Other Intangible Assets
 12 Months Ended
Dec. 31, 2025
Goodwill and Intangible Assets Disclosure [Abstract]  
Goodwill and Other Intangible Assets Goodwill and Other Intangible Assets
The changes in the carrying amount of goodwill were as follows:
Balance at January 1, 2025Goodwill Acquired
During the Year		Measurement Period
Adjustments		Balance at December 31, 2025
(In thousands)
West$123,674 $11,904 $1,997 $137,575 
Mountain26,816 — — 26,816 
Central115,322 212,962 (4,381)323,903 
Energy Services31,413 — (39)31,374 
Total
$297,225 $224,866 $(2,423)$519,668 
Balance at January 1, 2024
Goodwill Acquired
During the Year
Measurement Period
Adjustments
Balance at December 31, 2024
(In thousands)
West$123,599 $75 $— $123,674 
Mountain26,816 — — 26,816 
Central114,587 735 — 115,322 
Energy Services9,476 21,937 — 31,413 
Total
$274,478 $22,747 $— $297,225 
Other amortizable intangible assets at December 31, were as follows:
Average Useful Life In Years20252024
(In thousands)
Customer relationships
1-9
$34,699 $30,703 
Less accumulated amortization
15,789 11,060 
18,910 19,643 
Noncompete agreements
1-4
3,107 3,950 
Less accumulated amortization
2,904 3,524 
203 426 
Tradename
97,470 7,470 
Less accumulated amortization
871 124 
6,599 7,346 
Backlog
1-2
10,395 390 
Less accumulated amortization9,052 22 
1,343 368 
Other
10-15
5,968 3,310 
Less accumulated amortization
343 1,679 
5,625 1,631 
Total
$32,680 $29,414 
The previous tables include goodwill and intangible assets associated with the business combinations completed during 2025 and 2024. For acquisitions in 2025, the weighted average useful life for customer relationships was two years and other intangible assets was four years. For acquisitions in 2024, the weighted average useful life for
customer relationships was ten years, noncompete agreements was three years, tradename was ten years and other intangible assets was 11 years. For more information related to these business combinations, see Note 3.
Amortization expense for amortizable intangible assets for the years ended December 31, 2025, 2024 and 2023, was $14.8 million, $2.5 million and $2.6 million, respectively. Estimated amortization expense for identifiable intangible assets as of December 31, 2025, was:
20262027202820292030
Thereafter
(In thousands)
Amortization expense
$6,587$5,336$4,071$3,466$2,676$10,544