Income Taxes - Additional Information (Details) - USD ($)	3 Months Ended
	Mar. 31, 2026	Mar. 31, 2025	Dec. 31, 2025
Income Tax Disclosure [Abstract]
Unrecognized tax benefits	$ 0
Interest or penalties	0
Income tax (benefit) expense	$ (253,000)	$ (152,000)
Effective income tax rates	3.70%	7.20%
Percentage of tax benefits due to equity owners	85.00%
Tax receivable agreement percentage of tax benefits remaining realize	15.00%
Tax receivable agreement liability	$ 1,088,000		$ 1,088,000
Tax receivable agreement payments	$ 0

Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

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+ Details

GEN Restaurant Group, Inc. 10-Q