Note 13 - Revenue by Region (Details) - USD ($) $ in Thousands		3 Months Ended		6 Months Ended
		Jul. 31, 2016	Jul. 31, 2015	Jul. 31, 2016	Jul. 31, 2015
Reportable Geographical Components [Member] | North America [Member]
Revenue	[1]	$ 32,815	$ 33,529	$ 62,334	$ 63,751
Reportable Geographical Components [Member] | EMEA [Member]
Revenue		19,835	21,552	39,627	43,354
Reportable Geographical Components [Member] | Asia Pacific [Member]
Revenue		12,137	11,597	23,817	23,322
Reportable Geographical Components [Member] | Latin America [Member]
Revenue		4,991	4,613	9,397	10,129
Reportable Geographical Components [Member]
Revenue		69,778	71,291	135,175	140,556
Revenue		$ 69,778	$ 71,291	$ 135,175	$ 140,556

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