Note 15 - Business Segment Information - Revenue by Region (Details) - USD ($) $ in Thousands		3 Months Ended								12 Months Ended
		Jan. 31, 2021	Oct. 31, 2020	Jul. 31, 2020	Apr. 30, 2020	Jan. 31, 2020	Oct. 31, 2019	Jul. 31, 2019	Apr. 30, 2019	Jan. 31, 2021	Jan. 31, 2020	Jan. 31, 2019
Revenues		$ 82,977	$ 76,660	$ 74,081	$ 74,147	$ 78,552	$ 77,807	$ 76,378	$ 78,035	$ 307,865	$ 310,772	$ 333,016
Property and equipment, net		25,598				28,687				25,598	28,687
North America [Member]
Revenues										155,244	151,097	162,307
EMEA [Member]
Revenues										93,351	90,885	96,989
Asia Pacific [Member]
Revenues										39,327	46,363	51,628
Latin America [Member]
Revenues										19,943	22,427	22,092
Reportable Geographical Components [Member] | North America [Member]
Revenues	[1]									155,244	151,097	162,307
Property and equipment, net		21,358				23,439				21,358	23,439
Reportable Geographical Components [Member] | EMEA [Member]
Revenues										93,351	90,885	96,989
Property and equipment, net		2,792				3,262				2,792	3,262
Reportable Geographical Components [Member] | Asia Pacific [Member]
Revenues										39,327	46,363	51,628
Property and equipment, net		1,307				1,674				1,307	1,674
Reportable Geographical Components [Member] | Latin America [Member]
Revenues										19,943	22,427	$ 22,092
Property and equipment, net		$ 141				$ 312				$ 141	$ 312

[1] Sales into Canada accounted for 2% of North America total revenue for each of the fiscal years 2021, 2020 and 2019.