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Note 16 - Segment Information (Details Textual)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2021
USD ($)
Sep. 30, 2020
USD ($)
Sep. 30, 2021
USD ($)
Sep. 30, 2020
USD ($)
Number of Reportable Segments     3  
Share-based Payment Arrangement, Expense $ 3,307 $ 2,773 $ 9,604 $ 8,434
Unrealized and Realized Gains (Losses) 199 (113) (7) 1,480
Investigation-related Matters Expense $ 89 $ 573 $ 219 $ 1,771
Tubular Running Services [Member]        
Number of Countries in which Entity Operates 40   40  
Number Of Continents in which Entity Operates 6   6