Note 2 - Revenue - Disaggregation of Revenue (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Oct. 31, 2019	Oct. 31, 2018	Oct. 31, 2019	Oct. 31, 2018
Revenues	$ 77,807	$ 79,577	$ 232,220	$ 250,310
Automotive [Member]
Revenues	28,071	31,035	84,105	102,760
Consumer Products and Food and Beverage [Member]
Revenues	11,244	12,732	35,351	40,049
High Technology and Industrial Products [Member]
Revenues	26,612	23,873	78,549	74,231
Life Sciences and Other [Member]
Revenues	11,880	11,937	34,215	33,270
North America [Member]
Revenues	38,302	39,870	112,798	119,183
EMEA [Member]
Revenues	22,233	22,549	66,860	74,542
Asia Pacific [Member]
Revenues	11,776	12,348	35,413	37,773
Latin America [Member]
Revenues	$ 5,496	$ 4,810	$ 17,149	$ 18,812