STOCKHOLDERS' EQUITY 2 (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Total stock-based compensation expense, excluding acquisition-related charges
Stock-based compensation expense
Stock-based compensation expense	$ 43,124	$ 72,442	$ 68,125
Tax benefit	(7,707)	(12,060)	(10,453)
Total share-based compensation expense, net of income taxes	35,417	60,382	57,672
Cost of revenue
Stock-based compensation expense
Stock-based compensation expense	5,889	8,052	7,840
Research and development
Stock-based compensation expense
Stock-based compensation expense	14,852	22,825	22,916
Selling, general and administrative
Stock-based compensation expense
Stock-based compensation expense	$ 22,383	$ 41,565	$ 37,369