BASIS OF PRESENTATION AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Additional Information (Details) $ in Thousands						1 Months Ended	3 Months Ended		12 Months Ended
	May 04, 2023 USD ($)	Apr. 13, 2023 USD ($)	Oct. 27, 2022 USD ($)	Jul. 27, 2022 USD ($)	Jul. 30, 2014	Sep. 30, 2022 USD ($) restaurant	Mar. 29, 2023 USD ($) segment restaurant item	Mar. 30, 2022 USD ($) restaurant	Dec. 28, 2022 USD ($)	Dec. 29, 2021 USD ($)	Dec. 30, 2020 USD ($)
Basis Of Presentation And Summary Of Significant Accounting Policies [Line Items]
Total amount of outstanding debt							$ 58,000
Cash available							4,789		$ 20,493
Leaves of absence and overtime pay due to COVID 19							100	$ 2,300
Insurance proceeds							$ 138
Number of operating segments | segment							1
Goodwill and intangible asset impairment							$ 0
Unrecognized tax benefits, accrual of interest or penalties							0		$ 0
Loss on disposal of assets							30	66
Gain on recovery of insurance proceeds, property, equipment and expenses			$ 200				242
Gain on recovery of insurance proceeds, lost profits, net			(200)				(151)
Received from the insurance							400
Unrecognized tax benefits, interest or penalties expenses							0	0
Percentage of cash savings in taxes realized as a result of utilizing net operating losses payable to pre-IPO stockholders					85.00%
Income tax receivable agreement income							$ (122)	(130)
Total deferred amount											$ 4,900
Percentage of deferred amount due by current fiscal year										50.00%
Percentage of deferred amount due by next fiscal year									50.00%
Percentage of qualified wages paid for refundable payroll tax credit							70.00%
Employee retention tax credit										$ 3,400
Asset impairment charges								100
Employee retention credit receivable							$ 300
Proceeds from employee retention credit									$ 3,100
Revolver loan							$ 58,000		$ 66,000
Minimum | SOFR | 2022 Credit Agreement
Basis Of Presentation And Summary Of Significant Accounting Policies [Line Items]
Debt instrument basis percentage							1.25%
Minimum | Base Rate | 2022 Credit Agreement
Basis Of Presentation And Summary Of Significant Accounting Policies [Line Items]
Debt instrument basis percentage							0.25%
Maximum
Basis Of Presentation And Summary Of Significant Accounting Policies [Line Items]
Income tax receivable agreement income								$ (100)
Asset impairment charges							$ 100
Maximum | SOFR | 2022 Credit Agreement
Basis Of Presentation And Summary Of Significant Accounting Policies [Line Items]
Debt instrument basis percentage							2.25%
Maximum | Base Rate | 2022 Credit Agreement
Basis Of Presentation And Summary Of Significant Accounting Policies [Line Items]
Debt instrument basis percentage							1.25%
Supplier Concentration Risk | Accounts Payable
Basis Of Presentation And Summary Of Significant Accounting Policies [Line Items]
Number Of Suppliers | item							1
Supplier Concentration Risk | Supplier One | Accounts Payable
Basis Of Presentation And Summary Of Significant Accounting Policies [Line Items]
Percentage of concentration							21.50%		41.70%
Supplier Concentration Risk | Largest Supplier One | Purchased
Basis Of Presentation And Summary Of Significant Accounting Policies [Line Items]
Percentage of concentration							26.50%	29.70%
Geographic Concentration Risk | Revenue
Basis Of Presentation And Summary Of Significant Accounting Policies [Line Items]
Percentage of concentration							100.00%	100.00%
Subsequent Event
Basis Of Presentation And Summary Of Significant Accounting Policies [Line Items]
Estimated one-time costs		$ 1,100
Revolving Credit Facility | 2022 Credit Agreement
Basis Of Presentation And Summary Of Significant Accounting Policies [Line Items]
Maximum borrowing capacity				$ 150,000
Senior secured revolving facility term				5 years
Debt Instrument, Maturity Date							Jul. 27, 2027
Revolver loan							$ 58,000
Revolving Credit Facility | Federal Funds Rate | 2022 Credit Agreement
Basis Of Presentation And Summary Of Significant Accounting Policies [Line Items]
Debt instrument basis percentage							0.50%
Revolving Credit Facility | Subsequent Event | 2022 Credit Agreement
Basis Of Presentation And Summary Of Significant Accounting Policies [Line Items]
Proceeds from Lines of Credit	$ 2,000
Revolver loan	$ 60,000
Letter of Credit | 2022 Credit Agreement
Basis Of Presentation And Summary Of Significant Accounting Policies [Line Items]
Sub limit of revolving facility				$ 15,000
Swing Line Loans | 2022 Credit Agreement
Basis Of Presentation And Summary Of Significant Accounting Policies [Line Items]
Sub limit of revolving facility				$ 15,000
California
Basis Of Presentation And Summary Of Significant Accounting Policies [Line Items]
Number of restaurants | restaurant							1
Number of restaurants with ROU asset impairment charges | restaurant								1
Greater Los Angeles area market | Geographic Concentration Risk | Revenue
Basis Of Presentation And Summary Of Significant Accounting Policies [Line Items]
Percentage of concentration							70.70%	70.80%
Closed Store | Maximum
Basis Of Presentation And Summary Of Significant Accounting Policies [Line Items]
Closed-store reserve expense							$ 100	$ 100
Fire
Basis Of Presentation And Summary Of Significant Accounting Policies [Line Items]
Number of restaurants | restaurant						1
Fire | Maximum
Basis Of Presentation And Summary Of Significant Accounting Policies [Line Items]
Loss on disposal of assets						$ 100
Incurred costs			$ 100
Company-operated
Basis Of Presentation And Summary Of Significant Accounting Policies [Line Items]
Number of restaurants | restaurant							187
Franchised
Basis Of Presentation And Summary Of Significant Accounting Policies [Line Items]
Number of restaurants | restaurant							303