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Segment Reporting (Tables)

12 Months Ended

Dec. 31, 2016

Segment Reporting [Abstract]

Reconciliation of Retail Gross Margin to (Loss) Income Before Income Tax Expense

Below is a reconciliation of retail gross margin to income before income tax expense (in thousands).

		Years Ended December 31,
(in thousands)		2016				2015				2014
Reconciliation of Retail Gross Margin to Income before taxes
Income before income tax expense		$	76,099			$	27,949			$	(5,156	)
Interest and other income		(957		)		(324		)		(263		)
Interest expense		8,859				2,280				1,578
Operating Income		84,001				29,905				(3,841		)
Depreciation and amortization		32,788				25,378				22,221
General and administrative		84,964				61,682				45,880
Less:
Net asset optimization (expenses) revenue		(586		)		1,494				2,318
Net, Gain (losses) on non-trading derivative instruments		22,254				(18,423		)		(8,713		)
Net, Cash settlements on non-trading derivative instruments		(2,284		)		20,279				(6,289		)
Retail Gross Margin		$	182,369			$	113,615			$	76,944

Schedule of Financial Data for Business Segments

Financial data for business segments are as follows (in thousands):

Year Ended December 31, 2016	Retail Electricity				Retail Natural Gas				Corporate and Other				Eliminations				Spark Retail
Total Revenues	$	417,229			$	129,468			$	—			$	—			$	546,697
Retail cost of revenues	286,795				58,149				—				—				344,944
Less:
Net asset optimization revenues	—				(586		)		—				—				(586		)
Net, Gains (losses) on non-trading derivative instruments	17,187				5,067				—				—				22,254
Current period settlements on non-trading derivatives	(4,889		)		2,605				—				—				(2,284		)
Retail gross margin	$	118,136			$	64,233			$	—			$	—			$	182,369
Total Assets	$	577,695			$	242,739			$	169,404			$	(613,670	)		$	376,168
Goodwill	$	76,617			$	2,530			$	—			$	—			$	79,147

Year Ended December 31, 2015	Retail Electricity				Retail Natural Gas				Corporate and Other				Eliminations				Spark Retail
Total Revenues	$	229,490			$	128,663			$	—			$	—			$	358,153
Retail cost of revenues	170,684				70,504				—				—				241,188
Less:
Net asset optimization revenues	—				1,494				—				—				1,494
Net, Gains (losses) on non-trading derivative instruments	(13,348		)		(5,075		)		—				—				(18,423		)
Current period settlements on non-trading derivatives	11,899				8,380				—				—				20,279
Retail gross margin	$	60,255			$	53,360			$	—			$	—			$	113,615
Total Assets	$	150,245			$	113,583			$	88,823			$	(190,417	)		$	162,234
Goodwill	$	16,476			$	1,903			$	—			$	—			$	18,379

Year Ended December 31, 2014	Retail Electricity				Retail Natural Gas				Corporate and Other				Eliminations				Spark Retail
Total Revenues	$	176,406			$	146,470			$	—			$	—			$	322,876
Retail cost of revenues	149,452				109,164				—				—				258,616
Less:
Net asset optimization revenues	—				2,318				—				—				2,318
Net, Gains (losses) on non-trading derivative instruments	(518		)		(8,195		)		—				—				(8,713		)
Current period settlements on non-trading derivatives	(5,145		)		(1,144		)		—				—				(6,289		)
Retail gross margin	$	32,617			$	44,327			$	—			$	—			$	76,944
Total Assets	$	46,848			$	101,711			$	27,285			$	(37,447	)		$	138,397

X

- Definition

Tabular disclosure of the reconciliation of profit (loss) from reportable segments to the consolidated income (loss) before income tax expense (benefit) and discontinued operations. Includes, but is not limited to, reconciliation after income tax if income tax is allocated to the reportable segment.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 31
-URI http://asc.fasb.org/extlink&oid=68060357&loc=d3e8924-108599

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
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-Section 50
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- Definition

Tabular disclosure of the profit or loss and total assets for each reportable segment. An entity discloses certain information on each reportable segment if the amounts (a) are included in the measure of segment profit or loss reviewed by the chief operating decision maker or (b) are otherwise regularly provided to the chief operating decision maker, even if not included in that measure of segment profit or loss.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 30
-URI http://asc.fasb.org/extlink&oid=68060357&loc=d3e8906-108599

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
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-Section 50
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-URI http://asc.fasb.org/extlink&oid=68060357&loc=d3e8813-108599

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-URI http://asc.fasb.org/extlink&oid=68060357&loc=d3e8721-108599

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-Publisher FASB
-Name Accounting Standards Codification
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