Note 8 - Income Taxes - Income Tax Reconciliation (Details) - USD ($) $ in Thousands	12 Months Ended
	Jan. 31, 2020	Jan. 31, 2019
Tax expense at federal statutory rate	$ 1,057	$ 340
State expense, net of federal income tax effect	147	145
Deferred balance adjustment	(212)
Domestic return to provision	(172)	2,617
Global Intangible Low Tax Income Inclusion	703	438
Permanent differences other	(5)	126
Differences in foreign tax rate	(79)	334
Foreign rate change	(63)
Deferred tax on unremitted earnings	183	413
Foreign withholding taxes	274	252
All other, net expense	(35)	21
Total income tax expense	1,459	2,150
Domestic Tax Authority [Member]
Valuation allowance	(337)	(2,612)
State and Local Jurisdiction [Member]
Valuation allowance	$ (2)	$ 76