Equity - Computation of Earnings (Loss) Per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]
Net income attributable to Via Renewables, Inc. stockholders	$ 7,578	$ 3,733	$ 27,313
Less: Dividend on Series A preferred stock	8,054	7,804	7,441
Net income (loss) attributable to stockholders of Class A common stock	$ (476)	$ (4,071)	$ 19,872
Basic weighted average Class A common shares outstanding (in shares)	3,156	3,026	2,911
Basic earnings (loss) per share attributable to stockholders (in dollars per share)	$ (0.15)	$ (1.35)	$ 6.83
Net (loss) income attributable to stockholders of Class A common stock	$ (476)	$ (4,071)	$ 19,872
Diluted net (loss) income attributable to stockholders of Class A common stock	$ (476)	$ (4,071)	$ 19,872
Basic weighted average Class A common shares outstanding (in shares)	3,156	3,026	2,911
Effect of dilutive restricted stock units (in shares)	0	0	32
Diluted weighted average shares outstanding (in shares)	3,156	3,026	2,943
Diluted earnings (loss) per share attributable to stockholders (in dollars per share)	$ (0.15)	$ (1.35)	$ 6.75
Common Class B
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]
Antidilutive securities excluded from computation of diluted earnings per share (in shares)	4,000
Restricted Stock Units
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]
Antidilutive securities excluded from computation of diluted earnings per share (in shares)	200