BUSINESS SEGMENT INFORMATION (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Apr. 30, 2015 Segment Region		Apr. 30, 2014
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	$ 69,265		$ 68,485
Percentage of sales into Canada of North America total revenue (in hundredths)	2.00%		2.00%
North America [Member] | Reportable Geographical Components [Member]
Revenues From External Customers And Long Lived Assets [Line Items]
Revenue	30,222	[1]	29,139	[1]
EMEA [Member] | Reportable Geographical Components [Member]
Revenues From External Customers And Long Lived Assets [Line Items]
Revenue	21,802		24,151
Asia Pacific [Member] | Reportable Geographical Components [Member]
Revenues From External Customers And Long Lived Assets [Line Items]
Revenue	11,725		11,332
Latin America [Member] | Reportable Geographical Components [Member]
Revenues From External Customers And Long Lived Assets [Line Items]
Revenue	$ 5,516		$ 3,863

[1] Sales into Canada accounted for 2% of North America total revenue in each of the three months ended April 30, 2015 and 2014.