Note 13 - Business Segment Information - Revenue by Region (Details) - USD ($) $ in Thousands		3 Months Ended
		Apr. 30, 2020	Apr. 30, 2019
Revenues		$ 74,147	$ 78,035
North America [Member]
Revenues		37,002	37,659
EMEA [Member]
Revenues		22,568	22,509
Asia Pacific [Member]
Revenues		9,642	11,886
Latin America [Member]
Revenues		4,935	5,981
Reportable Geographical Components [Member] | North America [Member]
Revenues	[1]	37,002	37,659
Reportable Geographical Components [Member] | EMEA [Member]
Revenues		22,568	22,509
Reportable Geographical Components [Member] | Asia Pacific [Member]
Revenues		9,642	11,886
Reportable Geographical Components [Member] | Latin America [Member]
Revenues		$ 4,935	$ 5,981

[1] Sales into Canada accounted for 2% and 3% of North America total revenue in the three months ended April 30, 2020 and 2019, respectively.