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Note 7 - Crude Oil and Natural Gas Properties and Equipment (Tables)
9 Months Ended
Sep. 30, 2022
Notes Tables  
Property, Plant and Equipment [Table Text Block]
  As of September 30, 2022  

As of December 31, 2021

 
  

(in thousands)

 

Crude oil and natural gas properties and equipment - successful efforts method:

        

Wells, platforms and other production facilities

 $556,973  $488,756 

Work-in-progress

  60,749   13,515 

Undeveloped acreage

  23,735   23,735 

Equipment and other

  28,641   23,478 
   670,098   549,484 

Accumulated depreciation, depletion, amortization and impairment

  (475,387)  (455,160)

Net crude oil and natural gas properties, equipment and other

 $194,711  $94,324