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Concentration of Credit Risk and Major Customers - Narrative (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Concentration Risk [Line Items]
Receivables related to contracts with customers	$ 116,119	$ 348,458
Direct Energy Business Marketing LLC
Concentration Risk [Line Items]
Revenue from contracts with customers	165,465	453,501	$ 235,760
Citadel Energy Marketing LLC
Concentration Risk [Line Items]
Revenue from contracts with customers	180,039		$ 334,407
Accounts Receivable \| Customer Concentration Risk
Concentration Risk [Line Items]
Receivables related to contracts with customers	116,119	348,458
Accounts Receivable \| Customer Concentration Risk \| Direct Energy Business Marketing LLC
Concentration Risk [Line Items]
Receivables related to contracts with customers	13,416	$ 33,322
Accounts Receivable \| Customer Concentration Risk \| DTE Energy
Concentration Risk [Line Items]
Receivables related to contracts with customers	$ 11,611
Revenue from Contract with Customer Benchmark \| Customer Concentration Risk \| Direct Energy Business Marketing LLC
Concentration Risk [Line Items]
Percentage of revenue (more than)	10.00%	10.00%	10.00%
Revenue from Contract with Customer Benchmark \| Customer Concentration Risk \| Citadel Energy Marketing LLC
Concentration Risk [Line Items]
Percentage of revenue (more than)	10.00%		10.00%