Note 14 - Business Segment Information - Revenue by Region (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
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
Reportable Geographical Components [Member] | North America [Member]
Revenues	[1]	38,302	39,870	112,798	119,183
Reportable Geographical Components [Member] | EMEA [Member]
Revenues		22,233	22,549	66,860	74,542
Reportable Geographical Components [Member] | Asia Pacific [Member]
Revenues		11,776	12,348	35,413	37,773
Reportable Geographical Components [Member] | Latin America [Member]
Revenues		$ 5,496	$ 4,810	$ 17,149	$ 18,812

[1] Sales into Canada accounted for 2% of North America total revenue in the three and nine months ended October 31, 2019, and for 2% of North America total revenue in the three and nine months ended October 31, 2018.