STOCKHOLDERS' EQUITY (Schedule of Share-based Compensation, Net of Amount Capitalized) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Total stock-based compensation expense, excluding acquisition-related charges
Stock-based compensation expense
Stock-based compensation expense	$ 51,392	$ 59,679	$ 43,124
Tax benefit	(11,144)	(11,423)	(7,707)
Total share-based compensation expense, net of income taxes	40,248	48,256	35,417
Cost of revenue
Stock-based compensation expense
Stock-based compensation expense	5,900	6,356	5,889
Research and development
Stock-based compensation expense
Stock-based compensation expense	14,172	17,569	14,852
Selling, general and administrative
Stock-based compensation expense
Stock-based compensation expense	$ 31,320	$ 35,754	$ 22,383