Debt - Narrative (Details) - USD ($)		3 Months Ended
	Oct. 31, 2021	Mar. 31, 2024	Dec. 31, 2023	Jun. 30, 2022
Debt Instrument [Line Items]
Outstanding under subordinated note		$ 91,000,000	$ 97,000,000
Via Renewables | W. Keith Maxwell III
Debt Instrument [Line Items]
Ownership percentage (in percent)		51.00%
Line of Credit | Senior Secured Revolving Credit Facility
Debt Instrument [Line Items]
Debt default, material judgment (in excess of)		$ 5,000,000
Subordinated Debt | Amended And Restated Subordinated Promissory Note
Debt Instrument [Line Items]
Face amount	$ 25,000,000
Minimum availability under the borrowing base	5,000,000
Outstanding under subordinated note		0	0
Subordinated Debt | Amended And Restated Subordinated Promissory Note | Minimum
Debt Instrument [Line Items]
Subordinated debt, advances, no less than	1,000,000
Subordinated Debt | Amended And Restated Subordinated Promissory Note | Maximum
Debt Instrument [Line Items]
Subordinated debt, advances, no less than	$ 25,000,000
Subordinated Debt | Amended And Restated Subordinated Promissory Note | Prime Rate
Debt Instrument [Line Items]
Basis spread on variable rate (in percent)	2.00%
Revolving Credit Facility | Line of Credit
Debt Instrument [Line Items]
Capitalized financing costs		1,000,000	1,200,000
Capitalized financing costs, other current		800,000	800,000
Capitalized financing costs, other non-current		$ 200,000	$ 400,000
Line of credit facility, maximum borrowing capacity				$ 195,000,000.0
Interest rate, stated percentage (in percent)		4.00%
Nonutilization fee, percent		0.50%
Fixed charge coverage ratio		239.00%
Leverage ratio		185.00%
Senior secured leverage ratio		171.00%
Revolving Credit Facility | Line of Credit | Minimum
Debt Instrument [Line Items]
Fixed charge coverage ratio		110.00%
Revolving Credit Facility | Line of Credit | Maximum
Debt Instrument [Line Items]
Leverage ratio		250.00%
Senior secured leverage ratio		200.00%
Revolving Credit Facility | Line of Credit | SOFR
Debt Instrument [Line Items]
Basis spread on variable rate (in percent)		1.00%
Revolving Credit Facility | Line of Credit | SOFR | Minimum
Debt Instrument [Line Items]
Basis spread on variable rate (in percent)		3.25%
Revolving Credit Facility | Line of Credit | SOFR | Maximum
Debt Instrument [Line Items]
Basis spread on variable rate (in percent)		4.50%
Revolving Credit Facility | Line of Credit | Base Rate | Minimum
Debt Instrument [Line Items]
Basis spread on variable rate (in percent)		3.25%
Revolving Credit Facility | Line of Credit | Base Rate | Maximum
Debt Instrument [Line Items]
Basis spread on variable rate (in percent)		4.50%
Revolving Credit Facility | Line of Credit | Federal Funds Rate
Debt Instrument [Line Items]
Basis spread on variable rate (in percent)		0.50%