BUSINESS SEGMENT INFORMATION (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended				9 Months Ended
	Oct. 31, 2014		Oct. 31, 2013		Oct. 31, 2014 Region Segment		Oct. 31, 2013
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	$ 74,004		$ 65,660		$ 215,539		$ 192,781
Percentage of sales into Canada to North America total revenue (in hundredths)	2.00%		2.00%		2.00%		2.00%
North America [Member]
Revenues From External Customers And Long Lived Assets [Line Items]
Revenue	33,069	[1]	28,571	[1]	93,115	[1]	82,675	[1]
EMEA [Member]
Revenues From External Customers And Long Lived Assets [Line Items]
Revenue	23,362		21,707		73,244		63,344
Asia Pacific [Member]
Revenues From External Customers And Long Lived Assets [Line Items]
Revenue	12,485		11,236		35,688		34,379
Latin America [Member]
Revenues From External Customers And Long Lived Assets [Line Items]
Revenue	$ 5,088		$ 4,146		$ 13,492		$ 12,383

[1] Sales into Canada accounted for 2% of North America total revenue for both the three and nine months ended October 31, 2014 and 2013.