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Note 2 - Property and Equipment (Tables)
12 Months Ended
Dec. 31, 2020
Notes Tables  
Property, Plant and Equipment [Table Text Block]
  

2020

  

2019

 

Furniture and fixtures

 $722  $602 

Office equipment

  211   184 

Software

  1,159   1,159 

Laboratory equipment

  3,774   3,462 

Leasehold improvements

  8,583   8,528 
   14,449   13,935 

Less accumulated depreciation and amortization

  (7,336)  (6,588)

Property and equipment, net

 $7,113  $7,347