Note 12 - Business Segment Information - Revenue by Region (Details) - USD ($) $ in Thousands		3 Months Ended								12 Months Ended
		Jan. 31, 2017	Oct. 31, 2016	Jul. 31, 2016	Apr. 30, 2016	Jan. 31, 2016	Oct. 31, 2015	Jul. 31, 2015	Apr. 30, 2015	Jan. 31, 2017	Jan. 31, 2016	Jan. 31, 2015
Revenue		$ 73,264	$ 69,534	$ 69,778	$ 65,397	$ 69,259	$ 68,037	$ 71,291	$ 69,265	$ 277,973	$ 277,852	$ 295,101
Property and equipment, net		30,872				32,080				30,872	32,080
Reportable Geographical Components [Member] | North America [Member]
Revenue	[1]									129,436	127,776	129,693
Property and equipment, net		26,601				27,304				26,601	27,304
Reportable Geographical Components [Member] | EMEA [Member]
Revenue										81,765	84,268	98,279
Property and equipment, net		2,861				3,270				2,861	3,270
Reportable Geographical Components [Member] | Asia Pacific [Member]
Revenue										47,742	46,457	48,292
Property and equipment, net		1,075				1,331				1,075	1,331
Reportable Geographical Components [Member] | Latin America [Member]
Revenue										19,030	19,351	$ 18,837
Property and equipment, net		$ 335				$ 175				$ 335	$ 175

[1] Sales into Canada accounted for 2% of North America total revenue for each of the fiscal years 2017, 2016 and 2015.