Note 2 - Revenue - Disaggregation of Revenue (Details) - USD ($) $ in Thousands	3 Months Ended
	Apr. 30, 2021	Apr. 30, 2020
Revenues	$ 82,971	$ 74,147
High Technology and Industrial Products [Member]
Revenues	30,069	26,824
Automotive [Member]
Revenues	23,568	24,137
Life Sciences and Other [Member]
Revenues	15,930	11,372
Consumer Products and Food and Beverage [Member]
Revenues	13,404	11,814
North America [Member]
Revenues	39,240	37,002
EMEA [Member]
Revenues	28,713	22,568
Asia Pacific [Member]
Revenues	10,268	9,642
Latin America [Member]
Revenues	$ 4,750	$ 4,935