STOCK-BASED COMPENSATION (Tables)

12 Months Ended

Dec. 31, 2012

STOCK-BASED COMPENSATION

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

	2012	2011	2010
Dividend yield	0.0 %	0.0 %	0.0 %
Expected volatility	48.1 %	53.6 %	58.2 %
Risk free interest rate	0.74 %	1.5 %	1.9 %
Expected term	5.4 Years	5.8 Years	5.9 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, 2012	18,569	$	8.57	4.1	$	696,371
Granted 01/01/12 - 03/31/12	120	$	57.45
Granted 04/01/12 - 06/30/12	65	$	66.43
Granted 07/01/12 - 09/30/12	207	$	57.99
Granted 10/01/12 - 12/31/12	53	$	47.63
Exercised	(4,857)	$	2.45
Cancelled or forfeited	(157)	$	20.30
Outstanding at December 31, 2012	14,000	$	12.12	4.1	$	572,530
Vested and expected to vest in the
future at December 31, 2012	13,542	$	11.41	4.0	$	562,816
Exercisable at December 31, 2012	11,043	$	8.29	3.3	$	492,022

Summary of stock options outstanding and exercisable

	Options Outstanding			Options Exercisable
Range of Exercise Prices ($)	Number Outstanding (In Thousands)	Weighted Average Remaining Contractual Term (Years)	Weighted Average Exercise Price ($)	Number Exercisable (In Thousands)	Weighted Average Exercise Price ($)
$0.27   -   $2.09	1,011	0.5	$0.34	1,011	$0.34
$3.29   -   $3.29	4,400	2.2	$3.29	4,400	$3.29
$5.72   -   $6.21	27	2.8	$6.13	27	$6.13
$8.44   -   $8.44	2,458	2.9	$8.44	2,458	$8.44
$11.36   -   $15.60	203	5.8	$13.47	129	$13.40
$15.86   -   $15.86	2,090	5.4	$15.86	1,543	$15.86
$15.94   -   $17.44	146	5.8	$16.78	46	$16.55
$17.82   -   $17.82	1,517	6.9	$17.82	835	$17.82
$18.07   -   $28.98	1,416	7.0	$22.17	543	$21.94
$32.56   -   $74.78	732	9.2	$50.90	51	$39.49
	14,000	4.1	$12.12	11,043	$8.29

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, 2012	724	$	41.66
Granted 01/01/12 - 03/31/12	91	$	57.45
Granted 04/01/12 - 06/30/12	60	$	69.98
Granted 07/01/12 - 09/30/12	10	$	59.87
Granted 10/01/12 - 12/31/12	7	$	48.12
Vested	(252)	$	41.43
Forfeited/cancelled	(3)	$	61.16
Non-vested at December 31, 2012	637	$	46.97

Schedule of total compensation cost relating to incentive stock option, charged against income

	2012		2011		2010
Operating expenses	$	28,413	$	19,424	$	16,862
Total employee and non-employee share-based compensation expense included in income, before income tax	28,413		19,424		16,862
Less: Amount of income tax benefit recognized in earnings	(8,933)		(6,646)		(4,234)
Amount charged against net income	$	19,480	$	12,778	$	12,628