Note 7 - Income Taxes (Details Textual) - USD ($) $ in Thousands	12 Months Ended
	Jan. 31, 2022	Jan. 31, 2021	Jan. 31, 2020
Taxes Payable, Total	$ 200	$ 200
Effective Income Tax Rate Reconciliation, Percent, Total	27.20%	1.70%
Deferred Tax Assets, Operating Loss Carryforwards, State and Local	$ 2,730	$ 2,678
Deferred Tax Assets, Operating Loss Carryforwards, Foreign	448	543
Deferred Tax Assets, Tax Credit Carryforwards, Foreign	2,580	2,580
Unrecognized Tax Benefits, Ending Balance	1,611	1,591	$ 1,545
Unrecognized Tax Benefits that Would Impact Effective Tax Rate	600
Other Noncurrent Liabilities [Member]
Unrecognized Tax Benefits, Ending Balance	200	$ 200
Foreign Tax Authority [Member] | Middle East [Member]
Undistributed Earnings of Foreign Subsidiaries	22,700
Foreign Tax Authority [Member] | Ministry of Finance, India [Member]
Undistributed Earnings of Foreign Subsidiaries	800
Foreign Tax Authority [Member] | UNITED ARAB EMIRATES
Undistributed Earnings of Foreign Subsidiaries	19,200
Foreign Tax Authority [Member] | SAUDI ARABIA
Undistributed Earnings of Foreign Subsidiaries	3,500
Deferred Tax Liability Not Recognized, Amount of Unrecognized Deferred Tax Liability, Undistributed Earnings of Foreign Subsidiaries	200
Domestic Tax Authority [Member] | Internal Revenue Service (IRS) [Member]
Operating Loss Carryforwards, Total	40,100
Operating Loss Carryforwards Subject to Expiration	$ 33,800