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Note 2 - Basis of Presentation and Summary of Significant Accounting Policies (Tables)
12 Months Ended
Dec. 31, 2021
Notes Tables  
Property, Plant and Equipment [Table Text Block]
  

December 31,

 
  

2021

  

2020

 

Land

 $1,122  $725 

Information technology

  125   292 

Transportation equipment

  202   41 

Leasehold improvements

  143   24 

Field equipment

  8   10 

Total other property and equipment, net

 $1,600  $1,092