Segment Reporting - Schedule of Financial Data for Business Segments (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2025	Mar. 31, 2024	Dec. 31, 2024
Segment Reporting Information [Line Items]
Total Revenues	$ 142,257	$ 114,056
Retail cost of revenues	95,393	68,962
Less:
Net asset optimization expense	(2,249)	(1,597)
Net, loss on non-trading derivative instruments	4,386	(4,205)
Total current period settlements on derivatives	(3,900)	15,425
Retail Gross Margin	46,459	35,745
Add: Reconciling items	405	9,349
Gross Profit	46,864	45,094
Total Assets	347,402		$ 344,939
Goodwill	120,343		120,343
Gain (loss) on non-trading derivatives, net
Less:
Net, loss on non-trading derivative instruments	6,554	(4,296)
Total current period settlements on derivatives	(3,900)	15,242
Operating Segments | Retail Electricity
Segment Reporting Information [Line Items]
Total Revenues	80,720	77,329
Retail cost of revenues	58,202	49,131
Less:
Net asset optimization expense	0	0
Retail Gross Margin	21,414	18,911
Total Assets	1,932,644		1,867,055
Goodwill	117,813		117,813
Operating Segments | Retail Electricity | Gain (loss) on non-trading derivatives, net
Less:
Net, loss on non-trading derivative instruments	4,863	(3,836)
Total current period settlements on derivatives	(3,759)	13,123
Operating Segments | Retail Natural Gas
Segment Reporting Information [Line Items]
Total Revenues	63,783	37,059
Retail cost of revenues	37,189	19,203
Less:
Net asset optimization expense	0	0
Retail Gross Margin	25,044	16,197
Total Assets	167,105		126,911
Goodwill	2,530		2,530
Operating Segments | Retail Natural Gas | Gain (loss) on non-trading derivatives, net
Less:
Net, loss on non-trading derivative instruments	1,691	(460)
Total current period settlements on derivatives	(141)	2,119
Corporate and Other
Segment Reporting Information [Line Items]
Total Revenues	(2,246)	(332)
Retail cost of revenues	2	628
Less:
Net asset optimization expense	(2,249)	(1,597)
Retail Gross Margin	1	637
Total Assets	315,930		317,408
Goodwill	0		0
Corporate and Other | Gain (loss) on non-trading derivatives, net
Less:
Net, loss on non-trading derivative instruments	0	0
Total current period settlements on derivatives	0	0
Eliminations
Segment Reporting Information [Line Items]
Total Revenues	0	0
Retail cost of revenues	0	0
Less:
Net asset optimization expense	0	0
Retail Gross Margin	0	0
Total Assets	(2,068,277)		(1,966,435)
Goodwill	0		$ 0
Eliminations | Gain (loss) on non-trading derivatives, net
Less:
Net, loss on non-trading derivative instruments	0	0
Total current period settlements on derivatives	$ 0	$ 0