Consolidated Income Statements - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023
Revenue	$ 208,380	$ 181,007
Restaurant operating expenses:
Food cost	68,730	58,322
Payroll and benefits	64,322	56,889
Occupancy expenses	17,524	14,653
Operating expenses	21,538	18,043
Depreciation and amortization	6,735	4,808
Pre-opening costs	7,607	3,680
Total restaurant operating expenses	186,456	156,395
General and administrative	21,326	12,937
Consulting fees - related party		2,325
Management fees		1,176
Depreciation and amortization - corporate	122	84
Total costs and expenses	207,904	172,917
Income from operations	476	8,090
Employee retention credits	199	2,483
Gain on remeasurement of previously held interest (see Note 3)	3,402
Interest income, net	829	347
Equity in (loss) income of equity method investee	(17)	535
Net income before income taxes	4,889	11,455
Provision for income taxes	357	21
Net income	4,532	11,434
Less: Net income attributable to noncontrolling interest	3,940	3,028
Net income attributable to GEN Restaurant Group, Inc.	592	8,406
Net income attributable to Class A common stock per share - basic	592	324
Net income attributable to Class A common stock per share - diluted	$ 592	$ 324
Weighted-average shares of Class A common stock outstanding - basic	4,668	4,140
Weighted-average shares of Class A common stock outstanding - diluted	4,668	4,233
Net income per share of Class A common stock - basic	$ 0.13	$ 0.08
Net income per share of Class A common stock - diluted	$ 0.13	$ 0.08