Segment Information

9 Months Ended

Sep. 30, 2017

Segment Reporting [Abstract]

Segment Information

Note 3 – Segment Information

The Company has two reportable segments: natural gas operations and construction services. Southwest has a single reportable segment that is referred to herein as the natural gas operations segment of the Company. In order to reconcile to net income as disclosed in the Condensed Consolidated Statements of Income, an Other column is included associated with impacts related to corporate and administrative activities related to Southwest Gas Holdings, Inc. The following tables present revenues from external customers, intersegment revenues, and segment net income for the two reportable segments (thousands of dollars):

	Natural Gas Operations			Construction Services		Other			Total
Three months ended September 30, 2017
Revenues from external customers	$	213,059		$	351,850	$	—		$	564,909
Intersegment revenues		—			28,244		—			28,244
Total	$	213,059		$	380,094	$	—		$	593,153
Segment net income (loss)	$	(4,024	)	$	14,335	$	(107	)	$	10,204
Three months ended September 30, 2016
Revenues from external customers	$	200,179		$	312,531	$	—		$	512,710
Intersegment revenues		—			27,259		—			27,259
Total	$	200,179		$	339,790	$	—		$	539,969
Segment net income (loss)	$	(12,405	)	$	14,877	$	—		$	2,472
	Natural Gas Operations			Construction Services		Other			Total
Nine months ended September 30, 2017
Revenues from external customers	$	935,823		$	800,073	$	—		$	1,735,896
Intersegment revenues		—			72,463		—			72,463
Total	$	935,823		$	872,536	$	—		$	1,808,359
Segment net income (loss)	$	82,436		$	15,717	$	(777	)	$	97,376
Nine months ended September 30, 2016
Revenues from external customers	$	980,927		$	762,835	$	—		$	1,743,762
Intersegment revenues		—			75,203		—			75,203
Total	$	980,927		$	838,038	$	—		$	1,818,965
Segment net income	$	67,536		$	19,325	$	—		$	86,861
	Natural Gas Operations			Construction Services		Other			Total
Twelve months ended September 30, 2017
Revenues from external customers	$	1,276,308		$	1,078,195	$	—		$	2,354,503
Intersegment revenues		—			95,381		—			95,381
Total	$	1,276,308		$	1,173,576	$	—		$	2,449,884
Segment net income (loss)	$	134,323		$	29,010	$	(777	)	$	162,556
Twelve months ended September 30, 2016
Revenues from external customers	$	1,376,388		$	1,022,416	$	—		$	2,398,804
Intersegment revenues		—			105,566		—			105,566
Total	$	1,376,388		$	1,127,982	$	—		$	2,504,370
Segment net income	$	119,836		$	33,144	$	—		$	152,980