Segment Reporting (Tables)

3 Months Ended

Mar. 31, 2019

Segment Reporting [Abstract]

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

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

	Three Months Ended March 31,
	2019			2018
Reconciliation of Retail Gross Margin to Income (loss) before taxes
Income (loss) before income tax expense	$	3,786		$	(48,298	)
Interest and other income	(189		)	(201		)
Interest expense	2,223			2,245
Operating income (loss)	5,820			(46,254		)
Depreciation and amortization	12,155			13,019
General and administrative	29,476			30,047
Less:
Net asset optimization revenues	2,552			2,687
Net, loss on non-trading derivative instruments	(19,803		)	(36,712		)
Net, Cash settlements on non-trading derivative instruments	8,125			(14,882		)
Retail Gross Margin	$	56,577		$	45,719

Financial Data for Business Segments

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

Three Months Ended March 31,
2019	Retail Electricity			Retail Natural Gas			Corporate and Other		Eliminations			Consolidated
Total Revenues	$	182,092		$	58,062		$	2,552	$	—		$	242,706
Retail cost of revenues	165,888			29,367			—		—			195,255
Less:
Net asset optimization revenue	—						2,552		—			2,552
Net, (losses) gains on non-trading derivative instruments	(21,942		)	2,139			—		—			(19,803		)
Current period settlements on non-trading derivatives	8,173			(48		)	—		—			8,125
Retail Gross Margin	$	29,973		$	26,604		$	—	$	—		$	56,577
Total Assets at March 31, 2019	$	2,046,946		$	707,228		$	353,782	$	(2,659,093	)	$	448,863
Goodwill at March 31, 2019	$	117,813		$	2,530		$	—	$	—		$	120,343

Three Months Ended March 31,
2018	Retail Electricity			Retail Natural Gas			Corporate and Other		Eliminations			Consolidated
Total revenues	$	220,899		$	63,102		$	2,687	$	—		$	286,688
Retail cost of revenues	249,547			40,329			—		—			289,876
Less:
Net asset optimization revenue	—			—			2,687		—			2,687
Net, losses on non-trading derivative instruments	(33,319		)	(3,393		)	—		—			(36,712		)
Current period settlements on non-trading derivatives	(15,048		)	166			—		—			(14,882		)
Retail Gross Margin	$	19,719		$	26,000		$	—	$	—		$	45,719
Total Assets at December 31, 2018	$	1,857,790		$	649,969		$	361,697	$	(2,380,718	)	$	488,738
Goodwill at December 31, 2018	$	117,813		$	2,530		$	—	$	—		$	120,343