SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Income Taxes (Details) - USD ($)		12 Months Ended
	Jul. 30, 2014	Dec. 27, 2023	Dec. 28, 2022	Dec. 29, 2021	Dec. 30, 2020
SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES
Unrecognized tax benefits, accrual of interest or penalties		$ 0	$ 0
Percentage of cash savings in taxes realized as a result of utilizing net operating losses payable to pre-IPO stockholders	85.00%
Employee retention tax credit				$ 3,400,000
Proceeds from employee retention credit			3,100,000
Employee Retention Credit, Percentage of Qualified Wages Paid For Refundable Payroll Tax Credit, CARES Act		70.00%
Employee retention credit receivable			$ 300,000
Social Security Tax, Employer, Deferral, Percentage Due By Next Fiscal Year, CARES Act			50.00%
Social Security Tax, Employer, Deferral, Percentage Due By Current Fiscal Year, CARES Act				50.00%
Social Security Tax, Employer, Deferral, CARES Act					$ 4,900,000
Payments to pre-IPO stockholders under TRA		$ 350,000	$ 430,000	$ 1,658,000
Tax Receivable Agreement Expected Payments		$ 400,000	$ 700,000