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LONG-TERM DEBT - Narrative (Details)
$ in Millions
 9 Months Ended 12 Months Ended
Mar. 16, 2020
USD ($)
Sep. 27, 2020
USD ($)
Dec. 27, 2020
Dec. 26, 2021
Sep. 26, 2021
Jun. 27, 2021
USD ($)
Mar. 28, 2021
USD ($)
Dec. 29, 2019
USD ($)
Revolving Credit Facility [Line Items]                
Debt instrument, asset coverage ratio, threshold   1.00            
Debt instrument, asset coverage ratio, percentage of accounts receivable   60.00%            
Debt instrument, asset coverage ratio, unrestricted cash, threshold   $ 50.0            
Debt instrument, asset coverage ratio   22.1            
Debt instrument, liquidity threshold   $ 150.0            
Debt instrument, liquidity amount   320.6            
Revolving Credit Facility                
Revolving Credit Facility [Line Items]                
Maximum borrowing capacity $ 300.0              
Maximum borrowing capacity subject to lender approval $ 450.0              
Long-term debt               $ 37.1
Remaining borrowing capacity   292.4            
Line of credit facility, maximum borrowing capacity, additional borrowings   138.5            
Revolving Credit Facility | Base rate                
Revolving Credit Facility [Line Items]                
Additional debt instrument base rate 0.50%              
Revolving Credit Facility | Minimum                
Revolving Credit Facility [Line Items]                
Unused capacity commitment fee percentage 0.25%              
Revolving Credit Facility | Minimum | London Interbank Offered Rate (LIBOR)                
Revolving Credit Facility [Line Items]                
Basis spread on variable rate 1.25%              
Revolving Credit Facility | Minimum | Base rate                
Revolving Credit Facility [Line Items]                
Basis spread on variable rate 0.25%              
Revolving Credit Facility | Maximum                
Revolving Credit Facility [Line Items]                
Unused capacity commitment fee percentage 0.50%              
Revolving Credit Facility | Maximum | London Interbank Offered Rate (LIBOR)                
Revolving Credit Facility [Line Items]                
Basis spread on variable rate 3.50%              
Revolving Credit Facility | Maximum | Base rate                
Revolving Credit Facility [Line Items]                
Basis spread on variable rate 1.50%              
Swingline loan                
Revolving Credit Facility [Line Items]                
Maximum borrowing capacity $ 30.0              
Long-term debt   $ 1.5           $ 17.1
Swingline loan | Base rate                
Revolving Credit Facility [Line Items]                
Debt Instrument, Variable Rate   3.25%            
Effective interest rate   4.75%            
Swingline loan | Minimum | Base rate                
Revolving Credit Facility [Line Items]                
Basis spread on variable rate 0.25%              
Swingline loan | Maximum | Base rate                
Revolving Credit Facility [Line Items]                
Basis spread on variable rate 1.50% 1.50%            
Letter of credit                
Revolving Credit Facility [Line Items]                
Maximum borrowing capacity $ 125.0              
Letters of credit outstanding   $ 6.1            
Letter of credit | London Interbank Offered Rate (LIBOR)                
Revolving Credit Facility [Line Items]                
Additional letters of credit base rate 0.50%              
Letter of credit | Minimum | London Interbank Offered Rate (LIBOR)                
Revolving Credit Facility [Line Items]                
Basis spread on variable rate 1.00%              
Letter of credit | Maximum | London Interbank Offered Rate (LIBOR)                
Revolving Credit Facility [Line Items]                
Basis spread on variable rate 3.25%              
Forecast                
Revolving Credit Facility [Line Items]                
Debt instrument, covenant, EBITDA, trailing three quarters             $ 12.0  
Debt instrument, covenant, EBITDA, trailing four quarters           $ 15.0    
Leverage ratio, threshold       3.00 4.00      
Fixed charge coverage ratio, threshold         1.25      
Forecast | Revolving Credit Facility | London Interbank Offered Rate (LIBOR)                
Revolving Credit Facility [Line Items]                
Basis spread on variable rate     3.50%