Quarterly report pursuant to Section 13 or 15(d)

STOCK INCENTIVE PLANS AND SHARE-BASED COMPENSATION (Details)

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STOCK INCENTIVE PLANS AND SHARE-BASED COMPENSATION (Details) (USD $)
In Thousands, unless otherwise specified
3 Months Ended
Jun. 30, 2012
Jun. 30, 2011
Share-based compensation:    
Share-based compensation $ 4,287 $ 3,017
Cost Of Sales [Member]
   
Share-based compensation:    
Share-based compensation 571 455
Research and Development Expense [Member]
   
Share-based compensation:    
Share-based compensation 900 640
Selling and Marketing Expense [Member]
   
Share-based compensation:    
Share-based compensation 1,084 719
General and Administrative Expense [Member]
   
Share-based compensation:    
Share-based compensation $ 1,732 $ 1,203