v3.26.1
Cover Page - shares
 3 Months Ended
Mar. 29, 2026
May 04, 2026
Document Information [Line Items]    
Document Type 10-Q  
Document Quarterly Report true  
Document Period End Date Mar. 29, 2026  
Document Transition Report false  
Entity Registrant Name Utz Brands, Inc.  
Entity Incorporation, State or Country Code DE  
Entity File Number 001-38686  
Entity Tax Identification Number 85-2751850  
Entity Address, Address Line One 900 High Street  
Entity Address, City or Town Hanover  
Entity Address, State or Province PA  
Entity Address, Postal Zip Code 17331  
City Area Code 717  
Local Phone Number 637-6644  
Title of 12(b) Security Class A Common Stock, par value $0.0001 per share  
Trading Symbol UTZ  
Security Exchange Name NYSE  
Entity Current Reporting Status Yes  
Entity Interactive Data Current Yes  
Entity Filer Category Large Accelerated Filer  
Entity Small Business false  
Entity Emerging Growth Company false  
Entity Shell Company false  
Entity Central Index Key 0001739566  
Amendment Flag false  
Current Fiscal Year End Date --01-03  
Document Fiscal Period Focus Q1  
Document Fiscal Year Focus 2026  
Class A Common Stock    
Document Information [Line Items]    
Entity Common Stock, Shares Outstanding   88,537,061
Class V Common Stock    
Document Information [Line Items]    
Entity Common Stock, Shares Outstanding   55,349,000