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Note 1 - Nature of Activities and Summary of Significant Accounting Policies (Tables)
9 Months Ended
Sep. 30, 2022
Notes Tables  
Disaggregation of Revenue [Table Text Block]
  

For the three months ended September 30,

  

For the nine months ended September 30,

 
  

2022

  

2021

  

2022

  

2021

 

Ethanol and high-grade alcohol sales

 $44,673  $39,131  $130,224  $111,220 

Wet distiller's grains sales

  13,003   8,919   39,669   30,584 

Other sales

  3,231   1,782   8,947   5,086 
  $60,908  $49,832  $178,840  $146,890 
  

For the three months ended September 30,

  

For the nine months ended September 30, 2022

 
  

2022

  

2021

  

2022

  

2021

 

Biodiesel sales

 $10,828  $-  $10,828  $465 

Other sales

  95   63   113   231 
  $10,923  $63  $10,941  $696 
Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table Text Block]
  

As of

 
  

September 30, 2022

  

September 30, 2021

 
         

Series B preferred (post split basis)

  127   129 

Common stock options and warrants

  5,064   3,929 

Debt with conversion feature at $30 per share of common stock

  1,256   1,280 

Total number of potentially dilutive shares excluded from the diluted net (loss) per share calculation

  6,447   5,338