Annual report [Section 13 and 15(d), not S-K Item 405]

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Narrative (Details)

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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Narrative (Details)
 3 Months Ended 12 Months Ended
Jan. 03, 2026
USD ($)
segment
Jan. 03, 2026
USD ($)
Jan. 03, 2026
USD ($)
segment
region
Dec. 28, 2024
USD ($)
Dec. 30, 2023
USD ($)
Jan. 28, 2026
USD ($)
Dec. 23, 2024
Jan. 02, 2021
USD ($)
Accounting Policies [Line Items]                
Number of operating segments | segment     2          
Number of reportable segments | segment 2   2          
Number of geographic regions | region     2          
Number of sub geographical regions | region     3          
Impairment of intangible assets, indefinite-lived (excluding goodwill)     $ 0 $ 0 $ 0      
Impairment     6,967,000 0 0      
Impairment loss     6,527,000 0 0      
Equity securities without readily determinable fair value, impairment loss, annual amount     $ 0 0 0      
Non-qualified deferred compensation plan, salary deferred, percentage     0.50          
Non-qualified deferred compensation plan, annual incentive bonus deferral, percentage     0.80          
Life insurance, corporate or bank owned, amount $ 5,426,000 $ 5,426,000 $ 5,426,000 4,336,000        
Deferred compensation liability, classified, noncurrent, total 6,024,000 6,024,000 6,024,000 4,684,000        
Minimum amount of individual claims before insurance reimbursement 175,000 175,000 175,000          
Minimum amount of projected aggregate claims before insurance reimbursement 13,847,000 13,847,000 13,847,000          
Self-insurance expense     12,179,000 13,842,000 $ 14,501,000      
Derivative, notional amount 70,062,000 70,062,000 70,062,000          
Stock repurchase program, remaining authorized repurchase amount 33,965,000 33,965,000 33,965,000          
Contract with customer, asset, after allowance for credit loss, total 0 0 $ 0 $ 0        
Product return, first time order, duration of return (day)     30 days          
Product return, first time order, percentage refunded     100.00%          
Product return, percentage refunded     100.00%          
Product return, original delivery date     10 days          
Product return, percentage of net sales     0.80% 0.60% 0.60%      
Advertising expense     $ 43,159,000 $ 4,967,000 $ 4,756,000      
Research and development expense, total     10,693,000 11,571,000 11,446,000      
Designated as Hedging Instrument                
Accounting Policies [Line Items]                
Derivative assets (liabilities), at fair value, net, total $ 0 0 0 0        
Foreign Exchange Option | Designated as Hedging Instrument                
Accounting Policies [Line Items]                
Derivative, notional amount       77,345,000 81,343,000      
Derivative, gain on derivative, net     (1,072,000) 255,000 $ 2,504,000      
Forward Contracts | Designated as Hedging Instrument | Subsequent Event                
Accounting Policies [Line Items]                
Derivative, notional amount           $ 61,766,000    
Other Assets                
Accounting Policies [Line Items]                
Equity securities without readily determinable fair value, amount               $ 20,000,000
Core nutritional                
Accounting Policies [Line Items]                
Impairment loss     $ 6,390,000          
Core nutritional | Buy-Sell Reporting Unit                
Accounting Policies [Line Items]                
Goodwill, Impairment Loss, Statement of Income or Comprehensive Income [Extensible Enumeration]     Impairment          
Impairment loss   $ 6,390,000 $ 6,390,000          
Other                
Accounting Policies [Line Items]                
Impairment     577,000          
Impairment loss     $ 137,000          
Minimum | Software and Software Development Costs                
Accounting Policies [Line Items]                
Useful life 3 years 3 years 3 years          
Maximum | Software and Software Development Costs                
Accounting Policies [Line Items]                
Useful life 5 years 5 years 5 years          
Amounts Receivable from Credit Card Processors                
Accounting Policies [Line Items]                
Cash equivalents, at carrying value, total $ 7,490,000 $ 7,490,000 $ 7,490,000 9,122,000        
Restricted Cash Deposits in China                
Accounting Policies [Line Items]                
Restricted cash and cash equivalents, noncurrent, total $ 2,860,000 $ 2,860,000 $ 2,860,000 $ 2,740,000        
Hiya direct-to-consumer                
Accounting Policies [Line Items]                
Ownership interest             78.85%