BUSINESS SEGMENT INFORMATION (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Apr. 30, 2013 Segment Region		Apr. 30, 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	$ 61,927		$ 63,708
Percentage of sales into Canada to North America total revenue (in hundredths)	3.00%		3.00%
North America [Member]
Revenues From External Customers And Long Lived Assets [Line Items]
Revenue	26,566	[1]	28,518	[1]
EMEA [Member]
Revenues From External Customers And Long Lived Assets [Line Items]
Revenue	19,807		18,549
Asia Pacific [Member]
Revenues From External Customers And Long Lived Assets [Line Items]
Revenue	11,654		11,759
Latin America [Member]
Revenues From External Customers And Long Lived Assets [Line Items]
Revenue	$ 3,900		$ 4,882

[1] Sales into Canada accounted for 3% of North America total revenue in the three months ended April 30, 2013 and 2012.