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Note 3 - Revenues From Contracts With Customers Other Revenues (Tables)
 12 Months Ended
Dec. 31, 2018
Notes Tables  
Disaggregation of Revenue [Table Text Block]
   
Year Ended December 31, 2018
  
Major Goods/Service Line
  
Revenues from
Contracts with
Customers
    
Other Revenues
    
Total
  
Ethanol sales and related products, net
   $
31,641
     $
-
     $
31,641
  
Hydrocarbon revenue
    
1,197
      
-
      
1,197
  
Grant and other revenue
    
25
      
-
      
25
  
    $
32,863
     $
-
     $
32,863
  
Timing of Revenue Recognition
  
 
 
 
  
 
 
 
  
 
 
 
Goods transferred at a point in time
   $
32,838
     $
-
     $
32,838
  
Services transferred over time
    
25
      
-
      
25
  
    $
32,863
     $
-
     $
32,863
  
Operating Segment
  
 
 
 
  
 
 
 
  
 
 
 
Gevo
   $
1,222
     $
-
     $
1,222
  
Gevo Development / Agri-Energy
    
31,641
      
-
      
31,641
  
    $
32,863
     $
-
     $
32,863
  
Geographic Region
  
 
 
 
  
 
 
 
  
 
 
 
United States
   $
31,688
     $
-
     $
31,688
  
Other
    
1,176
      
-
      
1,176
  
    $
32,863
     $
-
     $
32,863
  
   
Year Ended December 31, 2017
  
Major Goods/Service Line
  
Revenues from
Contracts with
Customers
    
Other Revenues
    
Total
  
Ethanol sales and related products, net
   $
26,279
     $
-
     $
26,279
  
Hydrocarbon revenue
    
1,029
      
-
      
1,029
  
Grant and other revenue
    
-
      
228
      
228
  
    $
27,308
     $
228
     $
27,536
  
Timing of Revenue Recognition
  
 
 
 
  
 
 
 
  
 
 
 
Goods transferred at a point in time
   $
27,308
     $
-
     $
27,308
  
Services transferred over time
    
-
      
228
      
228
  
    $
27,308
     $
228
     $
27,536
  
Operating Segment
  
 
 
 
  
 
 
 
  
 
 
 
Gevo
   $
1,029
     $
68
     $
1,097
  
Gevo Development / Agri-Energy
    
26,279
      
160
      
26,439
  
    $
27,308
     $
228
     $
27,536
  
Geographic Region
  
 
 
 
  
 
 
 
  
 
 
 
United States
   $
26,324
     $
228
     $
26,552
  
Other
    
984
      
-
      
984
  
    $
27,308
     $
228
     $
27,536
  
   
Year Ended December 31, 2016
  
Major Goods/Service Line
  
Revenues from
Contracts with
Customers
    
Other Revenues
    
Total
  
Ethanol sales and related products, net
   $
24,613
     $
-
     $
24,613
  
Hydrocarbon revenue
    
1,929
      
-
      
1,929
  
Grant and other revenue
    
-
      
671
      
671
  
    $
26,542
     $
671
     $
27,213
  
Timing of Revenue Recognition
  
 
 
 
  
 
 
 
  
 
 
 
Goods transferred at a point in time
   $
26,542
     $
-
     $
26,542
  
Services transferred over time
    
-
      
671
      
671
  
    $
26,542
     $
671
     $
27,213
  
Operating Segment
  
 
 
 
  
 
 
 
  
 
 
 
Gevo
   $
1,929
     $
496
     $
2,425
  
Gevo Development / Agri-Energy
    
24,613
      
175
      
24,788
  
    $
26,542
     $
671
     $
27,213
  
Geographic Region
  
 
 
 
  
 
 
 
  
 
 
 
United States
   $
24,654
     $
671
     $
25,325
  
Other
    
1,889
      
-
      
1,889
  
    $
26,542
     $
671
     $
27,213