VARIABLE INTEREST ENTITIES - Schedule of variable interest entities (Details) - USD ($) $ in Thousands	Jun. 29, 2024	Mar. 30, 2024	Sep. 30, 2023	Jul. 01, 2023	Apr. 01, 2023	Oct. 01, 2022
Variable Interest Entity [Line Items]
Cash and cash equivalents	$ 11,467		$ 13,415
Accounts receivable	5,375		3,313
Inventories	2,468		3,093
Prepaid and refundable income taxes	148		212
Prepaid expenses and other current assets	1,972		1,569
Fixed assets - net	31,516		34,314
Operating lease right-of-use assets - net	88,654		96,459
Other assets	2,161		2,161
Total assets	166,533		176,956
Accounts payable - trade	5,214		4,058
Accrued expenses and other current liabilities	12,092		13,829
Current portion of operating lease liabilities	7,775		7,988
Operating lease liabilities, less current portion	86,521		92,232
TOTAL LIABILITIES	117,285		125,234
Equity of variable interest entities	49,248	$ 50,066	51,722	$ 62,967	$ 60,568	$ 60,118
TOTAL LIABILITIES AND EQUITY	166,533		176,956
Variable Interest Entity, Primary Beneficiary
Variable Interest Entity [Line Items]
Cash and cash equivalents	437		564
Accounts receivable	247		169
Inventories	45		47
Prepaid and refundable income taxes	16		204
Prepaid expenses and other current assets	44		31
Fixed assets - net	246		216
Operating lease right-of-use assets - net	1,576		1,796
Other assets	11		11
Total assets	2,622		3,096
Accounts payable - trade	221		93
Accrued expenses and other current liabilities	262		331
Current portion of operating lease liabilities	318		298
Operating lease liabilities, less current portion	1,382		1,623
TOTAL LIABILITIES	2,231		2,345
Equity of variable interest entities	391		751
TOTAL LIABILITIES AND EQUITY	2,622		3,096
Variable Interest Entity, Primary Beneficiary | Related Party
Variable Interest Entity [Line Items]
Due from Ark Restaurants Corp. and affiliates	0		58
Due to Ark Restaurants Corp. and affiliates	$ 48		$ 0