Segment Information Segment Information (Tables)

12 Months Ended

Dec. 31, 2015

Segment Reporting [Abstract]

Schedule of Segment Reporting Information, by Segment [Table Text Block]

The following table presents information about our reportable segments.

	For the Year Ended December 31,
	2015		2014		2013
(in thousands)
Operating Revenues, Unaffiliated Customers
Regulated Energy	$	300,674	$	299,345	$	263,573
Unregulated Energy	158,570		184,557		161,760
Other businesses and eliminations	—		14,932		18,973
Total operating revenues, unaffiliated customers	$	459,244	$	498,834	$	444,306
Intersegment Revenues(1)
Regulated Energy	$	1,228	$	1,097	$	1,064
Unregulated Energy	3,537		404		4,963
Other businesses	880		979		1,017
Total intersegment revenues	$	5,645	$	2,480	$	7,044
Operating Income
Regulated Energy	$	60,985	$	50,451	$	50,084
Unregulated Energy	16,355		11,723		12,353
Other businesses and eliminations	418		105		297
Operating Income	77,758		62,279		62,734
Gains from sales of businesses	—		7,139		—
Other income, net of other expenses	293		101		372
Interest charges	10,006		9,482		8,234
Income Before Income taxes	68,045		60,037		54,872
Income taxes	26,905		23,945		22,085
Net Income	$	41,140	$	36,092	$	32,787
Depreciation and Amortization
Regulated Energy	$	24,195	$	21,915	$	19,822
Unregulated Energy	5,679		3,994		3,686
Other businesses and eliminations	98		407		457
Total depreciation and amortization	$	29,972	$	26,316	$	23,965
Capital Expenditures
Regulated Energy	$	98,372	$	84,959	$	95,944
Unregulated Energy	38,347		9,648		4,829
Other businesses	5,994		3,450		7,266
Total capital expenditures	$	142,713	$	98,057	$	108,039

⁽¹⁾ All significant intersegment revenues are billed at market rates and have been eliminated from consolidated revenues.

	As of December 31,
	2015		2014
Identifiable Assets
Regulated Energy	$	870,559	$	796,021
Unregulated Energy	172,803		84,732
Other businesses	25,224		23,716
Total identifiable assets	$	1,068,586	$	904,469