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Note 1 - Basis of Presentation and Significant Accounting Policies (Tables)
12 Months Ended
Dec. 31, 2022
Notes Tables  
Schedules of Concentration of Risk, by Risk Factor [Table Text Block]
  

Year Ended

 
  December 31,  January 1,  January 2, 
  2022  2022  2021 

Weikeng Group

  30%  37%  35%

Arrow Electronics Inc.

  28   27   25 

Other distributors

  31   23   23 

Revenue attributable to distributors

  89%  87%  83%