Annual report pursuant to Section 13 and 15(d)

Note A - Summary of Significant Accounting Policies (Details Textual)

v3.22.0.1
Note A - Summary of Significant Accounting Policies (Details Textual)
 12 Months Ended 18 Months Ended
Jan. 01, 2022
USD ($)
Jan. 02, 2021
USD ($)
Dec. 28, 2019
USD ($)
Jun. 28, 2020
USD ($)
Jan. 02, 2022
USD ($)
Number of Geographic Regions 2        
Number of Sub Geographical Regions 3        
Goodwill, Impairment Loss $ 0 $ 0 $ 0    
Impairment of Intangible Assets, Indefinite-lived (Excluding Goodwill) 0 0   $ 0  
Equity Securities without Readily Determinable Fair Value, Amount 0 0      
Equity Securities without Readily Determinable Fair Value, Impairment Loss, Annual Amount 0 0      
Life Insurance, Corporate or Bank Owned, Amount 382,000        
Deferred Compensation Liability, Classified, Noncurrent, Total 390,000        
Minimum Amount of Individual Claims Before Insurance Reimbursement 175,000        
Minimum Amount of Projected Aggregate Claims Before Insurance Reimbursement 13,390,000        
Self-insurance Expense 12,349,000 11,798,000 11,846,000    
Derivative, Notional Amount 98,684,000        
Stock Repurchase Program, Remaining Authorized Repurchase Amount $ 108,221,000        
Contract with Customer, Asset, after Allowance for Credit Loss, Total   $ 0     $ 0
Product Return, First Time Order, Duration of Retrun (Day)   30 days      
Product Return, First Time Order, Percentage Refunded   100.00%      
Product Return, Percentage Refunded   100.00%      
Product Return, Percentage of Net Sales 0.60% 0.70%      
Advertising Expense $ 12,399,000 $ 9,853,000 11,615,000    
Research and Development Expense, Total 11,112,000 10,633,000 10,259,000    
Designated as Hedging Instrument [Member]          
Derivative, Notional Amount 98,930,000        
Derivative Assets (Liabilities), at Fair Value, Net, Total 0 0      
Foreign Exchange Option [Member] | Designated as Hedging Instrument [Member]          
Derivative, Notional Amount   90,000,000 110,000,000    
Derivative, Loss on Derivative 1,555,000        
Derivative, Gain on Derivative   846,000 $ 276,000    
Other Assets [Member]          
Equity Securities without Readily Determinable Fair Value, Amount   20,000,000      
Amounts Receivable from Credit Card Processors [Member]          
Cash Equivalents, at Carrying Value, Total 11,123 15,424      
Restricted Cash Deposits in China [Member]          
Restricted Cash and Cash Equivalents, Noncurrent, Total 3,146 3,062      
Fair Value, Nonrecurring [Member]          
Nonfinancial Assets, Fair Value Disclosure $ 0 $ 0