STOCK-BASED COMPENSATION (Tables)

3 Months Ended

Mar. 31, 2013

STOCK-BASED COMPENSATION

Schedule of weighted-average assumptions used to estimate the fair value of options granted

	Three-Months Ended March 31,
	2013	2012
Dividend yield	0.0 %	0.0 %
Expected volatility	47.8 %	48.3 %
Risk-free interest rate	0.9 %	0.9 %
Expected term	5.4 Years	5.5 Years

Summary of activities with respect to its stock option plans

Options	Number of Shares (In Thousands)	Weighted- Average Exercise Price Per Share		Weighted- Average Remaining Contractual Term (In Years)	Aggregate Intrinsic Value
Outstanding at January 1, 2013	14,000	$	12.12	4.1	$	572,530
Granted	636	$	47.36
Exercised	(117)	$	20.27
Cancelled or forfeited	(113)	$	25.55
Outstanding at March 31, 2013	14,406	$	13.51	4.1	$	497,761
Vested and expected to vest in the future at March 31, 2013	13,999	$	12.75	4.0	$	493,506
Exercisable at March 31, 2013	11,037	$	8.36	3.1	$	434,897

Summary of activities with respect to non-vested restricted stock awards and non-vested restricted stock units

	Number of Shares (in thousands)	Weighted Average Grant-Date Fair Value
Non-vested at January 1, 2013	637	$	46.97
Granted	8	$	50.89
Vested	(18)	$	57.45
Forfeited/cancelled	(6)	$	60.11
Non-vested at March 31, 2013	621	$	46.58