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v3.25.2

Segment Reporting - Narrative (Details) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2025 | Jun. 30, 2024 | Jun. 30, 2025 | Jun. 30, 2024
Segment Reporting [Abstract] |  |  |  |
Asset optimization revenue | $ 2.8 | $ 3.2 | $ 22.8 | $ 14.7
Asset optimization cost of revenues | $ 3.4 | $ 3.7 | $ 25.7 | $ 16.8

X
- Definition Asset Optimization, Cost of Revenues + References No definition available. + Details
Name: | spke_AssetOptimizationCostofRevenues
Namespace Prefix: | spke_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Asset Optimization Revenue, Gross + References No definition available. + Details
Name: | spke_AssetOptimizationRevenueGross
Namespace Prefix: | spke_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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- References No definition available. + Details
Name: | us-gaap_SegmentReportingAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration