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Note 6 - Revenue - Revenue by Areas of Capability (Details) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2022
Jun. 30, 2021
Jun. 30, 2022
Jun. 30, 2021
Total revenue $ 313,624 $ 176,251 $ 594,101 $ 332,546
Well Construction [Member]        
Total revenue 121,794 0 233,229 0
Well Management [Member]        
Total revenue $ 191,830 $ 176,251 $ 360,872 $ 332,546