Background, Organization, and Summary of Significant Accounting Policies (Tables)

3 Months Ended

Mar. 31, 2019

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Schedule of Other Property and Investments

Other Property and Investments. Other property and investments on the Condensed Consolidated Balance Sheets includes (thousands of dollars):

	March 31, 2019			December 31, 2018
Southwest Gas Corporation:
Net cash surrender value of COLI policies	$	122,048		$	114,405
Other property	1,735			1,741
Total Southwest Gas Corporation	123,783			116,146
Centuri property, equipment, and intangibles	894,739			792,191
Centuri accumulated depreciation/amortization	(316,832		)	(298,939		)
Other property	15,032			14,153
Total Southwest Gas Holdings, Inc.	$	716,722		$	623,551

Accounts Receivable for Services

Centuri’s accounts receivable for these services are presented in the table below (thousands of dollars):

	March 31, 2019		December 31, 2018
Centuri accounts receivable for services provided to Southwest	$	16,837	$	18,830

Schedule of Goodwill

(Thousands of dollars)	Natural Gas Operations		Utility Infrastructure Services		Total Company
December 31, 2018	$	10,095	$	348,950	$	359,045
Measurement Period Adjustment - Linetec acquisition	—		3,303		3,303
Foreign currency translation adjustment	—		2,134		2,134
March 31, 2019	$	10,095	$	354,387	$	364,482

Other Income (Deductions)

Other Income (Deductions). The following table provides the composition of significant items included in Other income (deductions) in the Condensed Consolidated Statements of Income (thousands of dollars):

	Three Months Ended						Twelve Months Ended
	March 31,						March 31,
	2019			2018			2019			2018
Southwest Gas Corporation - natural gas operations segment:
Change in COLI policies	$	7,600		$	(700	)	$	5,100		$	6,800
Interest income	1,597			1,418			6,199			3,638
Equity AFUDC	960			229			4,358			2,049
Other components of net periodic benefit cost	(3,765		)	(5,265		)	(19,560		)	(19,834		)
Miscellaneous income and (expense)	(446		)	(285		)	(2,788		)	(2,400		)
Southwest Gas Corporation - total other income (deductions)	5,946			(4,603		)	(6,691		)	(9,747		)
Utility infrastructure services segment:
Interest income	—			1			87			4
Foreign transaction gain (loss)	531			147			162			(606		)
Miscellaneous income and (expense)	344			115			125			956
Centuri - total other income (deductions)	875			263			374			354
Corporate and administrative	18			6			64			19
Consolidated Southwest Gas Holdings, Inc. - total other income (deductions)	$	6,839		$	(4,334	)	$	(6,253	)	$	(9,374	)