Segment Reporting (Tables)

6 Months Ended

Jun. 30, 2017

Segment Reporting [Abstract]

Reconciliation of Operating Profit (Loss) from Segments to Consolidated

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

	Three Months Ended June 30,						Six Months Ended June 30,
	2017			2016			2017			2016
Reconciliation of Retail Gross Margin to Income before taxes
Income before income tax expense	$	5,080		$	23,729		$	18,617		$	40,458
Interest and other income	265			(195		)	66			(100		)
Interest expense	2,452			832			5,897			1,585
Operating Income	7,797			24,366			24,580			41,943
Depreciation and amortization	9,656			8,253			18,926			15,042
General and administrative	19,346			19,799			43,839			37,179
Less:
Net asset optimization expenses	(168		)	(677		)	(361		)	(150		)
Net, (loss) gain on non-trading derivative instruments	(10,202		)	13,322			(31,578		)	3,702
Net, Cash settlements on non-trading derivative instruments	4,020			953			11,535			12,230
Retail Gross Margin	$	43,149		$	38,820		$	107,749		$	78,382

Schedule of Segment Reporting Information, by Segment

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

Three Months Ended June 30, 2017	Retail Electricity			Retail Natural Gas			Corporate and Other		Eliminations			Spark Retail
Total Revenues	$	131,908		$	19,528		$	—	$	—		$	151,436
Retail cost of revenues	102,079			12,558			—		—			114,637
Less:
Net asset optimization expenses	—			(168		)	—		—			(168		)
Losses on non-trading derivatives	(9,333		)	(869		)	—		—			(10,202		)
Current period settlements on non-trading derivatives	4,299			(279		)	—		—			4,020
Retail Gross Margin	$	34,863		$	8,286		$	—	$	—		$	43,149
Total Assets at June 30, 2017	$	838,978		$	302,637		$	247,693	$	(980,595	)	$	408,713
Goodwill at June 30, 2017	$	78,417		$	2,530		$	—	$	—		$	80,947

Three Months Ended June 30, 2016	Retail Electricity			Retail Natural Gas			Corporate and Other		Eliminations			Spark Retail
Total revenues	$	87,395		$	21,986		$	—	$	—		$	109,381
Retail cost of revenues	49,717			7,246			—		—			56,963
Less:
Net asset optimization revenues	—			(677		)	—		—			(677		)
Gains on non-trading derivatives	10,319			3,003			—		—			13,322
Current period settlements on non-trading derivatives	(272		)	1,225			—		—			953
Retail Gross Margin	$	27,631		$	11,189		$	—	$	—		$	38,820
Total Assets at December 31, 2016	$	577,695		$	242,739		$	169,404	$	(613,670	)	$	376,168
Goodwill at December 31, 2016	$	76,617		$	2,530		$	—	$	—		$	79,147

Six Months Ended June 30, 2017	Retail Electricity			Retail Natural Gas			Corporate and Other		Eliminations			Spark Retail
Total revenues	$	265,602		$	82,141		$	—	$	—		$	347,743
Retail cost of revenues	210,923			49,475			—		—			260,398
Less:
Net asset optimization expenses	—			(361		)	—		—			(361		)
Losses on non-trading derivatives	(28,960		)	(2,618		)	—		—			(31,578		)
Current period settlements on non-trading derivatives	12,005			(470		)	—		—			11,535
Retail Gross Margin	$	71,634		$	36,115		$	—	$	—		$	107,749
Total Assets at June 30, 2017	$	838,978		$	302,637		$	247,693	$	(980,595	)	$	408,713
Goodwill at June 30, 2017	$	78,417		$	2,530		$	—	$	—		$	80,947

Six Months Ended June 30, 2016	Retail Electricity		Retail Natural Gas			Corporate and Other		Eliminations			Spark Retail
Total revenues	$	149,328	$	70,599		$	—	$	—		$	219,927
Retail cost of revenues	96,017		29,746			—		—			125,763
Less:
Net asset optimization revenues	—		(150		)	—		—			(150		)
Gains on non-trading derivatives	929		2,773			—		—			3,702
Current period settlements on non-trading derivatives	9,345		2,885			—		—			12,230
Retail Gross Margin	$	43,037	$	35,345		$	—	$	—		$	78,382
Total Assets at December 31, 2016	$	577,695	$	242,739		$	169,404	$	(613,670	)	$	376,168
Goodwill at December 31, 2016	$	76,617	$	2,530		$	—	$	—		$	79,147