XML 37 R31.htm IDEA: XBRL DOCUMENT v3.2.0.727
Employee Stock and Savings Plans (Tables)
 6 Months Ended
Jul. 31, 2015
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]  
Stock compensation expense recognized
The following table summarizes stock-based compensation expense recognized:
 
Three months ended July 31,
 
Six months ended July 31,
 
2015
 
2014
 
2015
 
2014
Cost of revenues
$
608

 
$
544

 
$
1,316

 
$
1,079

Operating expenses:
 
 
 
 
 
 
 
Research and development
3,800

 
3,311

 
8,118

 
6,552

Marketing and selling
2,366

 
2,143

 
4,846

 
4,321

General and administration
3,812

 
3,162

 
6,584

 
5,337

Equity plan-related compensation expense
$
10,586

 
$
9,160

 
$
20,864

 
$
17,289