Note 13 - Business Segment Information - Revenue by Region (Details) - USD ($) $ in Thousands		3 Months Ended		9 Months Ended
		Oct. 31, 2020	Oct. 31, 2019	Oct. 31, 2020	Oct. 31, 2019
Revenues		$ 76,660	$ 77,807	$ 224,888	$ 232,220
North America [Member]
Revenues		39,379	38,302	115,379	112,798
EMEA [Member]
Revenues		23,334	22,233	67,281	66,860
Asia Pacific [Member]
Revenues		9,682	11,776	28,895	35,413
Latin America [Member]
Revenues		4,265	5,496	13,333	17,149
Reportable Geographical Components [Member] | North America [Member]
Revenues	[1]	39,379	38,302	115,379	112,798
Reportable Geographical Components [Member] | EMEA [Member]
Revenues		23,334	22,233	67,281	66,860
Reportable Geographical Components [Member] | Asia Pacific [Member]
Revenues		9,682	11,776	28,895	35,413
Reportable Geographical Components [Member] | Latin America [Member]
Revenues		$ 4,265	$ 5,496	$ 13,333	$ 17,149

[1] Sales into Canada accounted for 3% and 2% of North America total revenue in the three and nine months ended October 31, 2020, respectively and for 2% of North America total revenue in the three and nine months ended October 31, 2019.