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Note 6 - Revenue (Tables)
6 Months Ended
Jun. 30, 2022
Notes Tables  
Disaggregation of Revenue [Table Text Block]
  

Three Months Ended June 30,

  

Six Months Ended June 30,

 
  

2022

  

2021

  

2022

  

2021

 
  

(in thousands)

 

Revenue from customer contracts:

                

Sales under the COSPA

 $125,143  $50,808  $201,629  $94,637 

Other items reported in revenue not associated with customer contracts:

                

Carried interest recoupment

  2,371   2,332   3,483   4,154 

Royalties

  (16,529)  (6,117)  (25,471)  (11,994)

Crude oil and natural gas sales

 $110,985  $47,023  $179,641  $86,797