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Note 6 - Revenue - Revenue by Areas of Capability (Details) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2022
Sep. 30, 2021
Sep. 30, 2022
Sep. 30, 2021
Total revenue $ 334,351 $ 197,547 $ 928,452 $ 530,093
Well Construction [Member]        
Total revenue 129,455 0 362,684 0
Well Management [Member]        
Total revenue $ 204,896 $ 197,547 $ 565,768 $ 530,093