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Note 4 - Revenue Recognition (Details Textual) - USD ($)
$ in Thousands
12 Months Ended
Jan. 31, 2023
Jan. 31, 2022
Costs Incurred for Uncompleted Contracts, Anticipated Collection Period (Year) 1 year  
Contract with Customer, Liability, Revenue Recognized $ 1,300 $ 800
Unbilled Receivables, Current 11,634 2,656
Middle East [Member]    
Unbilled Receivables, Current $ 11,600 $ 2,700