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Note 7 - Income Taxes (Details Textual) - USD ($)
$ in Thousands
 12 Months Ended
Jan. 31, 2023
Jan. 31, 2022
Jan. 31, 2021
Taxes Payable, Total $ 600 $ 200  
Effective Income Tax Rate Reconciliation, Percent, Total 37.80% 27.20%  
Deferred Tax Assets, Operating Loss Carryforwards, Domestic $ 7,197 $ 8,424  
Deferred Tax Assets, Operating Loss Carryforwards, State and Local 2,744 2,730  
Deferred Tax Assets, Operating Loss Carryforwards, Foreign 318 448  
Deferred Tax Assets, Tax Credit Carryforwards, Foreign 2,580 2,580  
Unrecognized Tax Benefits, Ending Balance 1,673 1,611 $ 1,591
Unrecognized Tax Benefits that Would Impact Effective Tax Rate 900    
Other Noncurrent Liabilities [Member]      
Unrecognized Tax Benefits, Ending Balance 300 $ 200  
Foreign Tax Authority [Member] | Middle East [Member]      
Undistributed Earnings of Foreign Subsidiaries 28,200    
Foreign Tax Authority [Member] | Ministry of Finance, India [Member]      
Undistributed Earnings of Foreign Subsidiaries 8,400    
Foreign Tax Authority [Member] | UNITED ARAB EMIRATES      
Undistributed Earnings of Foreign Subsidiaries 22,800    
Foreign Tax Authority [Member] | SAUDI ARABIA      
Undistributed Earnings of Foreign Subsidiaries 5,400    
Deferred Tax Liability Not Recognized, Amount of Unrecognized Deferred Tax Liability, Undistributed Earnings of Foreign Subsidiaries 300    
Operating Loss Carryforwards 1,600    
Domestic Tax Authority [Member] | Internal Revenue Service (IRS) [Member]      
Operating Loss Carryforwards 34,300    
Operating Loss Carryforwards Subject to Expiration 26,900    
State and Local Jurisdiction [Member]      
Operating Loss Carryforwards Subject to Expiration $ 45,500