STOCK-BASED COMPENSATION (Tables)

6 Months Ended

Jun. 30, 2014

STOCK-BASED COMPENSATION

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

	Three-Months Ended June 30,		Six-Months Ended June 30,
	2014	2013	2014	2013
Dividend yield	0.0 %	0.0 %	0.0 %	0.0 %
Expected volatility	37.4 %	48.1 %	42.4 %	47.9 %
Risk-free interest rate	1.6 %	1.0 %	1.6 %	0.9 %
Expected term	5.6 years	6.1 years	5.9 years	5.7 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, 2014	12,973	$	15.70	3.7	$	675,595
Granted 01/01/14 - 03/31/14	689	$	70.06
Granted 04/01/14 - 06/30/14	99	$	69.16
Exercised	(317)	$	24.30
Cancelled or forfeited	(62)	$	45.18
Outstanding at June 30, 2014	13,382	$	18.55	3.6	$	702,248
Vested and expected to vest in the future at June 30, 2014	12,918	$	17.22	3.4	$	695,088
Exercisable at June 30, 2014	10,531	$	10.15	2.3	$	641,150

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, 2014	391	$	49.27
Granted 01/01/14 - 03/31/14	-	$	-
Granted 04/01/14 - 06/30/14	10	$	69.00
Vested	(39)	$	53.98
Forfeited/cancelled	(8)	$	53.34
Non-vested at June 30, 2014	354	$	49.23