Note 2 - Revenue - Disaggregation of Revenue (Details) - USD ($) $ in Thousands	3 Months Ended
	Apr. 30, 2020	Apr. 30, 2019
Revenues	$ 74,147	$ 78,035
Automotive [Member]
Revenues	24,137	29,072
Consumer Products and Food and Beverage [Member]
Revenues	11,814	11,978
High Technology and Industrial Products [Member]
Revenues	26,824	25,548
Life Sciences and Other [Member]
Revenues	11,372	11,437
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