Business segment data (Tables)

3 Months Ended

Mar. 31, 2019

Segment Reporting [Abstract]

Information on the Company's businesses

Information on the Company's segments was as follows:

	Three Months Ended
	March 31,
	2019			2018
	(In thousands)
External operating revenues:
Regulated operations:
Electric	$	92,566		$	87,404
Natural gas distribution	342,147			332,664
Pipeline and midstream	4,904			4,391
	439,617			424,459
Nonregulated operations:
Pipeline and midstream	3,709			4,442
Construction materials and contracting	227,113			213,284
Construction services	420,733			334,050
Other	19			58
	651,574			551,834
Total external operating revenues	$	1,091,191		$	976,293
Intersegment operating revenues:
Regulated operations:
Electric	$	—		$	—
Natural gas distribution	—			—
Pipeline and midstream	23,922			21,735
	23,922			21,735
Nonregulated operations:
Pipeline and midstream	33			24
Construction materials and contracting	95			101
Construction services	129			11
Other	7,824			2,638
	8,081			2,774
Intersegment eliminations	(32,003		)	(24,509		)
Total intersegment operating revenues	$	—		$	—

	Three Months Ended
	March 31,
	2019			2018
	(In thousands)
Operating income (loss):
Electric	$	17,987		$	18,154
Natural gas distribution	50,317			48,540
Pipeline and midstream	9,904			8,168
Construction materials and contracting	(41,580		)	(26,309		)
Construction services	27,465			20,634
Other	125			189
Total operating income	$	64,218		$	69,376
Net income:
Regulated operations:
Electric	$	15,505		$	13,084
Natural gas distribution	36,500			32,623
Pipeline and midstream	7,004			5,459
	59,009			51,166
Nonregulated operations:
Pipeline and midstream	(163		)	(179		)
Construction materials and contracting	(34,449		)	(23,521		)
Construction services	20,024			15,090
Other	(3,332		)	(596		)
	(17,920		)	(9,206		)
Income from continuing operations	41,089			41,960
Income (loss) from discontinued operations, net of tax	(163		)	477
Net income	$	40,926		$	42,437