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Stock Based Compensation
3 Months Ended
Apr. 04, 2015
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]  
STOCK-BASED COMPENSATION [Text Block]
STOCK-BASED COMPENSATION
Stock-based compensation expense is reflected in Cadence’s condensed consolidated income statements for the three months ended April 4, 2015 and March 29, 2014 as follows:
 
Three Months Ended
 
April 4,
2015
 
March 29,
2014
 
(In thousands)
Cost of product and maintenance
$
569

 
$
482

Cost of services
832

 
703

Marketing and sales
5,447

 
4,596

Research and development
11,377

 
9,667

General and administrative
3,636

 
3,416

Total stock-based compensation expense
$
21,861

 
$
18,864


Cadence had total unrecognized compensation expense, net of estimated forfeitures, related to stock option and restricted stock grants of $129.8 million as of April 4, 2015, which will be recognized over the remaining vesting period. The remaining weighted-average vesting period of unvested awards is 2.0 years.