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Note 8 - Fair Value Measurements (Tables)
12 Months Ended
Jan. 01, 2023
Notes Tables  
Fair Value, Assets Measured on Recurring Basis [Table Text Block]
  

Fair Value at Valuation Date Using:

 
  

Total

  

Quoted Prices in Active Markets for Identical Assets (Level I)

  

Significant Other Observable Inputs (Level 2)

  

Significant Unobservable Inputs (Level 3)

 

Non-marketable equity investment

 $300  $  $  $300