Note 8 - Income Taxes (Details Textual) - USD ($) $ in Thousands	12 Months Ended
	Jan. 31, 2020	Jan. 31, 2019
Taxes Payable, Total	$ 200
Effective Income Tax Rate Reconciliation, Percent, Total	29.00%	134.40%
Effective Income Tax Rate Reconciliation, Prior Year Income Taxes, Amount	$ (172)	$ 2,617
Operating Loss Carryforwards, Total	33,800
Deferred Tax Assets, Operating Loss Carryforwards, State and Local	2,567	2,552
Deferred Tax Assets, Operating Loss Carryforwards, Foreign	223	390
Deferred Tax Assets, Tax Credit Carryforwards, Foreign	2,580	2,305
Unrecognized Tax Benefits, Income Tax Penalties and Interest Accrued, Total	100	100
Unrecognized Tax Benefits that Would Impact Effective Tax Rate	400
Foreign Tax Authority [Member] | Middle East [Member]
Undistributed Earnings of Foreign Subsidiaries	26,800
Deferred Tax Liability Not Recognized, Amount of Unrecognized Deferred Tax Liability, Undistributed Earnings of Foreign Subsidiaries	25,000
Foreign Tax Authority [Member] | UNITED ARAB EMIRATES
Undistributed Earnings of Foreign Subsidiaries	16,100
Deferred Tax Liability Not Recognized, Amount of Unrecognized Deferred Tax Liability, Undistributed Earnings of Foreign Subsidiaries	0
Foreign Tax Authority [Member] | SAUDI ARABIA
Undistributed Earnings of Foreign Subsidiaries	10,700
Deferred Tax Liability Not Recognized, Amount of Unrecognized Deferred Tax Liability, Undistributed Earnings of Foreign Subsidiaries	2,100
Foreign Tax Authority [Member] | Ministry of Finance, India [Member]
Undistributed Earnings of Foreign Subsidiaries	4,600
Deferred Tax Liability Not Recognized, Amount of Unrecognized Deferred Tax Liability, Undistributed Earnings of Foreign Subsidiaries	900
Domestic Tax Authority [Member]
Effective Income Tax Rate Reconciliation, Change in Deferred Tax Assets Valuation Allowance, Amount	$ (337)	$ (2,612)