Segment Information

6 Months Ended

Jun. 30, 2016

Segment Reporting [Abstract]

Segment Information

Note 3 – Segment Information

The following tables present revenues from external customers, intersegment revenues, and segment net income (thousands of dollars):

	Natural Gas			Construction
	Operations			Services			Total
Three months ended June 30, 2016
Revenues from external customers	$	255,648		$	266,343		$	521,991
Intersegment revenues		—			25,757			25,757
Total	$	255,648		$	292,100		$	547,748
Segment net income	$	2,358		$	6,585		$	8,943
Three months ended June 30, 2015
Revenues from external customers	$	286,643		$	229,112		$	515,755
Intersegment revenues		—			22,849			22,849
Total	$	286,643		$	251,961		$	538,604
Segment net income (loss)	$	(657	)	$	5,606		$	4,949
	Natural Gas			Construction
	Operations			Services			Total
Six months ended June 30, 2016
Revenues from external customers	$	780,748		$	450,304		$	1,231,052
Intersegment revenues		—			47,944			47,944
Total	$	780,748		$	498,248		$	1,278,996
Segment net income	$	79,941		$	4,448		$	84,389
Six months ended June 30, 2015
Revenues from external customers	$	839,758		$	390,201		$	1,229,959
Intersegment revenues		—			42,865			42,865
Total	$	839,758		$	433,066		$	1,272,824
Segment net income (loss)	$	78,264		$	(1,332	)	$	76,932
	Natural Gas			Construction
	Operations			Services			Total
Twelve months ended June 30, 2016
Revenues from external customers	$	1,395,629		$	964,973		$	2,360,602
Intersegment revenues		—			109,195			109,195
Total	$	1,395,629		$	1,074,168		$	2,469,797
Segment net income	$	113,302		$	32,472		$	145,774
Twelve months ended June 30, 2015
Revenues from external customers	$	1,463,873		$	782,514		$	2,246,387
Intersegment revenues		—			86,595			86,595
Total	$	1,463,873		$	869,109		$	2,332,982
Segment net income	$	120,739		$	16,909		$	137,648