Segment Reporting (Tables)

12 Months Ended

Dec. 31, 2021

Segment Reporting [Abstract]

Schedule of 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)	2021		2020		2019
Reconciliation of Retail Gross Margin to Income (loss) before taxes
(Loss) income before income tax expense	$	(147)	$	83,954	$	21,470
Gain on disposal of eRex	—		—		(4,862)
Interest and other income	(370)		(423)		(1,250)
Interest expense	4,926		5,266		8,621
Operating income	4,409		88,797		23,979
Depreciation and amortization	21,578		30,767		40,987
General and administrative	44,279		90,734		133,534
Less:
Net asset optimization (expense) revenue	(4,243)		(657)		2,771
Net, gain (loss) on non-trading derivative instruments	22,130		(23,439)		(67,955)
Net, cash settlements on non-trading derivative instruments	(15,752)		37,921		42,944
Non-recurring event - Winter Storm Uri	(64,403)		—		—
Retail Gross Margin	$	132,534	$	196,473	$	220,740

Schedule of Financial Data for Business Segments

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

Year Ended December 31, 2021
	Retail Electricity		Retail Natural Gas		Corporate and Other		Eliminations		Consolidated
Total Revenues	$	322,594	$	75,134	$	(4,243)	$	—	$	393,485
Retail cost of revenues	284,794		38,425		—		—		323,219
Less:
Net asset optimization revenue	—		—		(4,243)		—		(4,243)
Net, gain on non-trading derivative instruments	19,070		3,060		—		—		22,130
Current period settlements on non-trading derivatives	(12,876)		(2,876)		—		—		(15,752)
Non-recurring event - Winter Storm Uri	(64,403)		—		—		—		(64,403)
Retail gross margin	$	96,009	$	36,525	$	—	$	—	$	132,534
Total Assets	$	1,527,456	$	7,320	$	311,556	$	(1,491,056)	$	355,276
Goodwill	$	117,813	$	2,530	$	—	$	—	$	120,343

Year Ended December 31, 2020
	Retail Electricity		Retail Natural Gas		Corporate and Other		Eliminations		Consolidated
Total Revenues	$	461,393	$	94,154	$	(657)	$	—	$	554,890
Retail cost of revenues	306,012		38,580		—		—		344,592
Less:
Net asset optimization expense	—		—		(657)		—		(657)
Net, losses on non-trading derivative instruments	(23,242)		(197)		—		—		(23,439)
Current period settlements on non-trading derivatives	35,390		2,531		—		—		37,921
Retail gross margin	$	143,233	$	53,240	$	—	$	—	$	196,473
Total Assets	$	2,906,139	$	941,569	$	318,865	$	(3,799,906)	$	366,667
Goodwill	$	117,813	$	2,530	$	—	$	—	$	120,343

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 expense	—		—		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