Segment Reporting (Tables)

12 Months Ended

Dec. 31, 2019

Segment Reporting [Abstract]

Reconciliation of Retail Gross Margin to Income Before Income Tax Expense

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

	Years Ended December 31,
(in thousands)	2019			2018			2017
Reconciliation of Retail Gross Margin to Income (loss) before taxes
Income (loss) before income tax expense	$	21,470		$	(12,315	)	$	113,809
Change in Tax Receivable Agreement Liability	—			—			(22,267		)
Gain on disposal of eRex	(4,862		)	—			—
Total other income/(expense)	(1,250		)	(749		)	(256		)
Interest expense	8,621			9,410			11,134
Operating income (loss)	23,979			(3,654		)	102,420
Depreciation and amortization	40,987			52,658			42,341
General and administrative	133,534			111,431			101,127
Less:
Net asset optimization revenue (expenses)	2,771			4,511			(717		)
Net, (losses) gain on non-trading derivative instruments	(67,955		)	(19,571		)	5,588
Net, Cash settlements on non-trading derivative instruments	42,944			(9,614		)	16,508
Retail Gross Margin	$	220,740		$	185,109		$	224,509

Financial Data for Business Segments

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

Year Ended December 31, 2019
	Retail Electricity			Retail Natural Gas			Corporate and Other		Eliminations			Consolidated
Total Revenues	$	688,451		$	122,503		$	2,771	$	—		$	813,725
Retail cost of revenues	552,250			62,975			—		—			615,225
Less:
Net asset optimization revenue	—			—			2,771		—			2,771
Net, Losses on non-trading derivative instruments	(66,180		)	(1,775		)	—		—			(67,955		)
Current period settlements on non-trading derivatives	41,841			1,103			—		—			42,944
Retail gross margin	$	160,540		$	60,200		$	—	$	—		$	220,740
Total Assets	$	2,524,884		$	820,601		$	341,411	$	(3,263,928	)	$	422,968
Goodwill	$	117,813		$	2,530		$	—	$	—		$	120,343

Year Ended December 31, 2018
	Retail Electricity			Retail Natural Gas			Corporate and Other		Eliminations			Consolidated
Total Revenues	$	863,451		$	137,966		$	4,511	$	—		$	1,005,928
Retail cost of revenues	762,771			82,722			—		—			845,493
Less:
Net asset optimization expense	—			—			4,511		—			4,511
Net, Losses on non-trading derivative instruments	(15,200		)	(4,371		)	—		—			(19,571		)
Current period settlements on non-trading derivatives	(8,788		)	(826		)	—		—			(9,614		)
Retail gross margin	$	124,668		$	60,441		$	—	$	—		$	185,109
Total Assets	$	1,857,790		$	649,969		$	361,697	$	(2,380,718	)	$	488,738
Goodwill	$	117,813		$	2,530		$	—	$	—		$	120,343

Year Ended December 31, 2017
	Retail Electricity		Retail Natural Gas			Corporate and Other			Eliminations			Consolidated
Total Revenues	$	657,566	$	141,206		$	(717	)	$	—		$	798,055
Retail cost of revenues	477,012		75,155			—			—			552,167
Less:
Net asset optimization expense	—		—			(717		)	—			(717		)
Net, Gains on non-trading derivative instruments	5,784		(196		)	—			—			5,588
Current period settlements on non-trading derivatives	16,302		206			—			—			16,508
Retail gross margin	$	158,468	$	66,041		$	—		$	—		$	224,509
Total Assets	$	1,218,243	$	421,896		$	281,176		$	(1,417,574	)	$	503,741
Goodwill	$	117,624	$	2,530		$	—		$	—		$	120,154