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Note 7 - Income Taxes (Details Textual) - USD ($)
$ in Thousands
 12 Months Ended
Jan. 31, 2025
Jan. 31, 2024
Jan. 31, 2023
Taxes Payable $ 800 $ 800  
Effective Income Tax Rate Reconciliation, Percent 29.10% (33.60%)  
Deferred Tax Assets, Operating Loss Carryforwards, Domestic $ 4,870 $ 6,173  
Deferred Tax Assets, Operating Loss Carryforwards, State and Local 1,544 1,495  
Deferred Tax Assets, Operating Loss Carryforwards, Foreign 255 258  
Valuation Allowance, Deferred Tax Asset, Increase (Decrease), Amount (200)    
Deferred Tax Assets, Tax Credit Carryforwards, Foreign 2,580 2,580  
Unrecognized Tax Benefits 1,409 1,433 $ 1,673
Unrecognized Tax Benefits that Would Impact Effective Tax Rate 1,200    
Other Noncurrent Liabilities [Member]      
Unrecognized Tax Benefits 400 400  
Foreign Tax Jurisdiction [Member] | Middle East [Member]      
Undistributed Earnings of Foreign Subsidiaries 50,600    
Foreign Tax Jurisdiction [Member] | Ministry of Finance, India [Member]      
Undistributed Earnings of Foreign Subsidiaries 13,300    
Foreign Tax Jurisdiction [Member] | UNITED ARAB EMIRATES      
Undistributed Earnings of Foreign Subsidiaries 25,900    
Foreign Tax Jurisdiction [Member] | SAUDI ARABIA      
Undistributed Earnings of Foreign Subsidiaries 24,700    
Deferred Tax Liability Not Recognized, Amount of Unrecognized Deferred Tax Liability, Undistributed Earnings of Foreign Subsidiaries 1,200    
Operating Loss Carryforwards Subject to Expiration 1,300    
Domestic Tax Jurisdiction [Member] | Internal Revenue Service (IRS) [Member]      
Operating Loss Carryforwards 23,800 30,100  
Operating Loss Carryforwards Subject to Expiration 16,400    
State and Local Jurisdiction [Member]      
Operating Loss Carryforwards Subject to Expiration $ 21,900 $ 21,000