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Segment Reporting (Tables)
3 Months Ended
Apr. 30, 2014
Segment Reporting [Abstract]  
Revenues related to operations in geographic regions
Revenues related to operations in the geographic regions were:
 
 
Three months ended April 30,
 
2014
 
2013
Revenues:
 
 
 
United States
$
124,766

 
$
96,086

Europe
60,149

 
48,707

Japan
21,281

 
26,677

Pacific Rim
43,713

 
51,991

Other
2,242

 
3,054

Total revenues
$
252,151

 
$
226,515