BUSINESS SEGMENT INFORMATION (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended				6 Months Ended
	Jul. 31, 2013		Jul. 31, 2012		Jul. 31, 2013 GeographicRegion Segment		Jul. 31, 2012
BUSINESS SEGMENT INFORMATION [Abstract]
Number of geographic regions					4
Number of operating segments					1
Revenues From External Customers And Long Lived Assets [Line Items]
Revenue	$ 65,194		$ 60,969		$ 127,121		$ 124,677
Percentage of sales into Canada to North America total revenue (in hundredths)	2.00%		3.00%		3.00%		3.00%
North America [Member]
Revenues From External Customers And Long Lived Assets [Line Items]
Revenue	27,538	[1]	26,211	[1]	54,104	[1]	54,729	[1]
EMEA [Member]
Revenues From External Customers And Long Lived Assets [Line Items]
Revenue	21,830		18,809		41,637		37,358
Asia Pacific [Member]
Revenues From External Customers And Long Lived Assets [Line Items]
Revenue	11,489		11,851		23,143		23,610
Latin America [Member]
Revenues From External Customers And Long Lived Assets [Line Items]
Revenue	$ 4,337		$ 4,098		$ 8,237		$ 8,980

[1] Sales into Canada accounted for 2% and 3% of North America total revenue in the three and six months ended July 31, 2013, respectively and for 3% of North America total revenue for both the three and six months ended July 31, 2012.