SHARE-BASED COMPENSATION (Details) (USD $)
3 Months Ended 12 Months Ended
Mar. 31, 2015
Mar. 31, 2014
Dec. 31, 2014
Share-based Compensation Expense      
Total share-based compensation expense $ 17,329,000 $ 13,420,000  
Share based compensation cost capitalized 600,000   800,000
Cost of goods manufactured and sold      
Share-based Compensation Expense      
Total share-based compensation expense 2,017,000 2,310,000  
Research and development      
Share-based Compensation Expense      
Total share-based compensation expense 4,457,000 3,403,000  
Selling, general and administrative      
Share-based Compensation Expense      
Total share-based compensation expense $ 10,855,000 $ 7,707,000