Nature of Operations and Basis of Presentation (Tables)

9 Months Ended

Sep. 30, 2016

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Schedule of Goodwill

(In thousands of dollars)	Natural Gas Operations		Construction Services		Consolidated
December 31, 2015	$	10,095	$	116,050	$	126,145
Additional goodwill from ETTI acquisition		—		10,726		10,726
Foreign currency translation adjustment		—		5,568		5,568
September 30, 2016	$	10,095	$	132,344	$	142,439

Estimated Fair Values of Assets Acquired as of Acquisition Date

The preliminary estimated fair values of assets acquired as of May 6, 2016, the acquisition date, are as follows (in millions of dollars):

	Acquisition Date
Property, plant and equipment	$	4.3
Intangible assets		2.9
Goodwill		10.7
Total assets acquired	$	17.9

Intercompany Transactions

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

	September 30, 2016		December 31, 2015
Centuri accounts receivable for services provided to Southwest	$	12,402	$	10,006

Schedule of Other Property and Investments

Other Property and Investments. Other property and investments includes (thousands of dollars):

	September 30, 2016			December 31, 2015
Centuri property and equipment	$	460,165		$	423,369
Centuri accumulated provision for depreciation and amortization		(228,230	)		(221,028	)
Net cash surrender value of COLI policies		104,940			99,276
Other property		11,690			11,914
Total	$	348,565		$	313,531

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						Nine Months Ended						Twelve Months Ended
	September 30						September 30						September 30
	2016			2015			2016			2015			2016			2015
Change in COLI policies	$	2,300		$	(3,900	)	$	5,400		$	(2,600	)	$	7,500		$	(200	)
Interest income		522			624			1,280			1,375			2,078			2,096
Equity AFUDC		611			878			1,893			2,011			2,890			2,435
Foreign transaction gain (loss)		(3	)		(302	)		(22	)		(874	)		28			(1,052	)
Miscellaneous income and (expense)		(865	)		(960	)		(1,795	)		(1,138	)		(1,635	)		(2,313	)
Total other income (deductions)	$	2,565		$	(3,660	)	$	6,756		$	(1,226	)	$	10,861		$	966