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COMMON STOCK (Details) - shares
Jan. 01, 2026
Mar. 29, 2026
Dec. 28, 2025
Class of Stock [Line Items]      
Total reserved shares of common stock   31,170,461 30,367,496
Common stock increase (in shares) 1,184,484    
Shares available for future issuance under the 2021 Equity Incentive Plan      
Class of Stock [Line Items]      
Total reserved shares of common stock   5,394,746 6,652,380
Shares reserved for achievement of Spyce milestones      
Class of Stock [Line Items]      
Total reserved shares of common stock   0 250,000
Stock Options      
Class of Stock [Line Items]      
Total reserved shares of common stock   14,612,476 14,070,559
Employee Stock      
Class of Stock [Line Items]      
Total reserved shares of common stock   5,295,815 4,111,331
Restricted Stock Units And Performance Share Units      
Class of Stock [Line Items]      
Total reserved shares of common stock   5,867,424 5,283,226