BUSINESS SEGMENT INFORMATION (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended				9 Months Ended
	Oct. 31, 2012		Oct. 31, 2011		Oct. 31, 2012		Oct. 31, 2011
BUSINESS SEGMENT INFORMATION [Abstract]
Number of geographic regions					4
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenue	$ 61,709		$ 60,733		$ 186,386		$ 182,093
Percentage of sales into Canada to North America total revenue (in hundredths)	3.00%		3.00%		3.00%		3.00%
North America [Member]
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenue	26,305	[1]	25,613	[1]	81,034	[1]	76,097	[1]
EMEA [Member]
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenue	18,674		18,631		56,032		55,682
Asia Pacific [Member]
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenue	11,933		12,027		35,543		35,794
Latin America [Member]
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenue	$ 4,797		$ 4,462		$ 13,777		$ 14,520

[1] Sales into Canada accounted for 3% of North America total revenue in the three and nine months ended October 31, 2012 and for 3% of North America total revenue for the three and nine months ended October 31, 2011.