BUSINESS SEGMENT INFORMATION (Details) $ in Thousands		3 Months Ended		6 Months Ended
		Jul. 31, 2015 USD ($)	Jul. 31, 2014 USD ($)	Jul. 31, 2015 USD ($) Region Segment	Jul. 31, 2014 USD ($)
BUSINESS SEGMENT INFORMATION [Abstract]
Number of geographic regions | Region				4
Number of operating segments | Segment				1
Revenues From External Customers And Long Lived Assets [Line Items]
Revenue		$ 71,291	$ 73,050	$ 140,556	$ 141,535
Percentage of sales into Canada of North America total revenue (in hundredths)		2.00%	2.00%	2.00%	2.00%
North America [Member] | Reportable Geographical Components [Member]
Revenues From External Customers And Long Lived Assets [Line Items]
Revenue	[1]	$ 33,529	$ 30,907	$ 63,751	$ 60,046
EMEA [Member] | Reportable Geographical Components [Member]
Revenues From External Customers And Long Lived Assets [Line Items]
Revenue		21,552	25,731	43,354	49,882
Asia Pacific [Member] | Reportable Geographical Components [Member]
Revenues From External Customers And Long Lived Assets [Line Items]
Revenue		11,597	11,871	23,322	23,203
Latin America [Member] | Reportable Geographical Components [Member]
Revenues From External Customers And Long Lived Assets [Line Items]
Revenue		$ 4,613	$ 4,541	$ 10,129	$ 8,404

[1] Sales into Canada accounted for 2% of North America total revenue in each of the three and six months ended July 31, 2015 and 2014.