Note 7 - Income Taxes - Components of Income Tax Expense/(Benefit) (Details) - USD ($) $ in Thousands	12 Months Ended
	Jan. 31, 2022	Jan. 31, 2021
Federal	$ 1	$ 18
Foreign	2,317	413
State and other	144	105
Total current income tax expense	2,462	536
Federal	0	0
Foreign	(197)	(669)
State and other	0	0
Total deferred income tax expense/(benefit)	(197)	(669)
Total income tax expense/(benefit)	$ 2,265	$ (133)