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Note 4 - Revenue Recognition (Details Textual) - USD ($)
$ in Thousands
6 Months Ended
Jul. 31, 2023
Jan. 31, 2023
Costs Incurred for Uncompleted Contracts, Anticipated Collection Period (Year) 1 year  
Unbilled Receivables, Current $ 11,557 $ 11,634
Middle East [Member]    
Unbilled Receivables, Current   $ 11,600