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Stock-Based Compensation
 3 Months Ended
Jun. 30, 2016
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]  
STOCK-BASED COMPENSATION
STOCK-BASED COMPENSATION
The following tables summarize the allocation of the stock-based compensation expense:
Stock-based compensation expense by type of grant:
Three Months Ended June 30,
 
2016
 
2015
 
(In thousands)
Employee stock purchase rights
$
327

 
$
207

RSUs
7,847

 
5,897

 
8,174

 
6,104

Stock-based compensation capitalized to inventory
(9
)
 
(12
)
Total
$
8,165

 
$
6,092



Stock-based compensation expense by cost centers:
Three Months Ended June 30,
 
2016
 
2015
 
(In thousands)
Cost of revenues
$
167

 
$
105

Research and development
5,993

 
4,060

Selling, general and administrative
2,014

 
1,939

 
8,174

 
6,104

Stock-based compensation capitalized to inventory
(9
)
 
(12
)
Total
$
8,165

 
$
6,092


As of June 30, 2016, the amount of unrecognized stock-based compensation cost related to unvested stock-based awards was $32.4 million which will be recognized over a weighted average period of 1.3 years.