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Note 6 - Revenue - Revenue by Areas of Capability (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Total revenue $ 1,279,418 $ 825,762 $ 675,026
Well Construction [Member]      
Total revenue 500,438 112,126 0
Well Management [Member]      
Total revenue $ 778,980 $ 713,636 $ 675,026