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Note 5 - Property and Equipment (Tables)
6 Months Ended
Jun. 30, 2023
Notes Tables  
Property, Plant and Equipment [Table Text Block]
  

June 30,
2023

  

December 31,
2022

 

Equipment

 $5,148  $5,137 

Leasehold improvements

  1,612   1,612 

Software

  364   364 

Furniture and fixtures

  22   22 

Total property and equipment–at cost

  7,146   7,135 

Less: Accumulated depreciation

  (5,942)  (5,568)

Property and equipment, net

 $1,204  $1,567