SHARE INCENTIVE PLANS: (Details 5) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Share-based compensation expense
Total share-based compensation expense	$ 45,138,000	$ 35,019,000	$ 21,412,000
Total unrecognized share-based compensation costs related to non-vested awards	89,800,000
Weighted average period for recognition of unrecognized share-based compensation costs	2 years 3 months 25 days
Share options
Share-based compensation expense
Total share-based compensation expense	12,460,000	14,104,000	12,568,000
Employee Share Purchase Plan
Share-based compensation expense
Total share-based compensation expense	3,938,000	2,851,000	1,686,000
Restricted Stock
Share-based compensation expense
Total share-based compensation expense	28,740,000	18,064,000	7,158,000
Cost of goods sold
Share-based compensation expense
Total share-based compensation expense	1,828,000	1,621,000	980,000
Research and development
Share-based compensation expense
Total share-based compensation expense	25,956,000	19,356,000	11,906,000
Sales and marketing
Share-based compensation expense
Total share-based compensation expense	9,198,000	8,055,000	4,894,000
General and administrative
Share-based compensation expense
Total share-based compensation expense	$ 8,156,000	$ 5,987,000	$ 3,632,000