Revenue from contracts with customers (Tables)

3 Months Ended

Mar. 31, 2025

Revenue from Contract with Customer [Abstract]

Schedule of Disaggregation of revenue

In the following tables, revenue is disaggregated by the type of customer or service provided. The Company believes this level of disaggregation best depicts how the nature, amount, timing and uncertainty of revenue and cash flows are affected by economic factors. The table also includes a reconciliation of the disaggregated revenue by reportable segments. For more information on the Company's business segments, see Note 14.

Three Months Ended March 31, 2025	Electric		Natural gas distribution		Pipeline		Other		Total
	(In thousands)
Residential utility sales	$	39,685	$	289,235	$	—	$	—	$	328,920
Commercial utility sales	48,477		192,331		—		—		240,808
Industrial utility sales	9,164		15,462		—		—		24,626
Other utility sales	1,850		—		—		—		1,850
Natural gas transportation	—		17,710		49,253		—		66,963
Natural gas storage	—		—		6,030		—		6,030
Other	17,591		23,478		1,362		179		42,610
Intersegment eliminations	(178)		(94)		(33,337)		(178)		(33,787)
Revenues from contracts with customers	116,589		538,122		23,308		1		678,020
Other revenues	(4,328)		1,126		15		—		(3,187)
Total external operating revenues	$	112,261	$	539,248	$	23,323	$	1	$	674,833

Three Months Ended March 31, 2024	Electric		Natural gas distribution		Pipeline		Other		Total
	(In thousands)
Residential utility sales	$	39,222	$	263,103	$	—	$	—	$	302,325
Commercial utility sales	41,515		162,130		—		—		203,645
Industrial utility sales	11,349		14,579		—		—		25,928
Other utility sales	1,936		—		—		—		1,936
Natural gas transportation	—		14,591		43,637		—		58,228
Natural gas storage	—		—		5,382		—		5,382
Other	15,630		3,201		2,256		37		21,124
Intersegment eliminations	(12)		(41)		(30,290)		(21)		(30,364)
Revenues from contracts with customers	109,640		457,563		20,985		16		588,204
Other revenues	(1,897)		1,921		47		—		71
Total external operating revenues	$	107,743	$	459,484	$	21,032	$	16	$	588,275

Three Months Ended March 31, 2025 Electric Natural gas
distribution Pipeline Construction
services Other Total

Three Months Ended March 31, 2024 Electric Natural gas
distribution Pipeline Construction
services Other Total