Statements of Operations and Comprehensive Income (Loss) - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	Aug. 31, 2023	Aug. 31, 2022	Aug. 31, 2021
Sales	$ 187,429	$ 141,089	$ 64,891
Restaurant operating costs:
Depreciation and amortization expenses	7,422	5,258	4,126
Other costs	24,911	17,517	10,448
Total restaurant operating costs	158,652	119,199	58,783
General and administrative expenses	28,035	22,289	15,701
Depreciation and amortization expenses	410	355	396
Total operating expenses	187,097	141,843	74,880
Operating income (loss)	332	(754)	(9,989)
Other expense (income):
Interest expense	69	87	220
Interest income	(1,472)	(151)	(20)
Income (loss) before income taxes	1,735	(690)	(10,189)
Income tax expense	233	74	106
Net income (loss)	$ 1,502	$ (764)	$ (10,295)
Net income (loss) per Class A and Class B shares
Basic	$ 0.15	$ (0.08)	$ (1.21)
Diluted	$ 0.14	$ (0.08)	$ (1.21)
Weighted average Class A and Class B shares
Basic	10,305	9,719	8,528
Diluted	10,640	9,719	8,528
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent [Abstract]
Unrealized gain on short-term investments	$ 43
Comprehensive income (loss)	1,545	$ (764)	$ (10,295)
Food and Beverage Costs
Restaurant operating costs:
Cost of goods and services sold	56,631	42,510	20,686
Labor and Related Costs
Restaurant operating costs:
Cost of goods and services sold	56,547	43,997	16,430
Occupancy and Related Expenses
Restaurant operating costs:
Cost of goods and services sold	$ 13,141	$ 9,917	$ 7,093