Note 13 - Business Segment Information - Revenue by Region (Details) - USD ($) $ in Thousands		3 Months Ended		9 Months Ended
		Oct. 31, 2016	Oct. 31, 2015	Oct. 31, 2016	Oct. 31, 2015
Reportable Geographical Components [Member] | North America [Member]
Revenue	[1]	$ 33,413	$ 32,417	$ 95,747	$ 96,168
Reportable Geographical Components [Member] | EMEA [Member]
Revenue		19,334	19,376	58,961	62,730
Reportable Geographical Components [Member] | Asia Pacific [Member]
Revenue		11,932	11,813	35,749	35,135
Reportable Geographical Components [Member] | Latin America [Member]
Revenue		4,855	4,431	14,252	14,560
Reportable Geographical Components [Member]
Revenue		69,534	68,037	204,709	208,593
Revenue		$ 69,534	$ 68,037	$ 204,709	$ 208,593

[1] Sales into Canada accounted for 2% of North America total revenue in each of the three and nine months ended October 31, 2016 and 2015.