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Note 4 - Revenue Recognition (Details Textual) - USD ($)
$ in Thousands
3 Months Ended
Apr. 30, 2024
Jan. 31, 2024
Costs Incurred for Uncompleted Contracts, Anticipated Collection Period (Year) 1 year  
Unbilled Receivables, Current $ 15,718 $ 16,597
Middle East [Member]    
Unbilled Receivables, Current $ 15,700 $ 16,600