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Note 15 - Income Taxes (Tables)
3 Months Ended
Mar. 31, 2022
Notes Tables  
Schedule of Effective Income Tax Rate Reconciliation [Table Text Block]
  

Three Months Ended March 31,

 
  

2022

  

2021

 

Loss before income taxes

 $

(8,364

) $(9,435)

Theoretical tax benefit at the statutory rate (21.0% in 2022, 21.0% in 2021)

  (1,756)  (1,981)

Differences in jurisdictional tax rates

  (252)  (354)

Valuation allowance

  2,067   1,984 

Non-deductible expenses

  213   334 

Other

     17 

Total income tax provision

  272    

Net loss

 $(8,636) $(9,435)