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STOCK-BASED COMPENSATION (Tables) | 12 Months Ended
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Dec. 31, 2013
STOCK-BASED COMPENSATION |
Schedule of weighted-average assumptions used to estimate the fair value of options granted |
|  | 2013 |  | 2012 |  | 2011
Dividend yield |  | 0.0 % |  | 0.0 % |  | 0.0 %
Expected volatility |  | 47.5 % |  | 48.1 % |  | 53.6 %
Risk free interest rate |  | 0.98 % |  | 0.74 % |  | 1.5 %
Expected term |  | 5.7 Years |  | 5.4 Years |  | 5.8 Years
Summary of activities with respect to its stock option plans |
|  |  |  |  |  | Weighted- |  |  |
|  |  |  | Weighted- |  | Average |  |  |
|  |  |  | Average |  | Remaining |  |  |
|  | Number of |  | Exercise |  | Contractual |  |  |
|  | Shares (In |  | Price Per |  | Term (In |  | Aggregate |
Options |  | Thousands) |  | Share |  | Years) |  | Intrinsic Value |
Outstanding at January 1, 2013 |  | 14,000 |  | $ | 12.12 |  | 4.1 |  | $ | 572,530 |
Granted 01/01/13 - 03/31/13 |  | 636 |  | $ | 47.36 |  |  |  |  |
Granted 04/01/13 - 06/30/13 |  | 450 |  | $ | 54.00 |  |  |  |  |
Granted 07/01/13 - 09/30/13 |  | - |  | $ | - |  |  |  |  |
Granted 10/01/13 - 12/31/13 |  | 106 |  | $ | 57.76 |  |  |  |  |
Exercised |  | (2,022 | ) | $ | 10.51 |  |  |  |  |
Cancelled or forfeited |  | (197 | ) |  | $ | 27.28 |  |  |  |  |
Outstanding at December 31, 2013 |  | 12,973 |  | $ | 15.70 |  | 3.7 |  | $ | 675,595 |
Vested and expected to vest in the future at December 31, 2013 |  | 12,639 |  | $ | 14.89 |  | 3.6 |  | $ | 668,379 |
Exercisable at December 31, 2013 |  | 10,401 |  | $ | 9.38 |  | 2.7 |  | $ | 607,302 |
Summary of stock options outstanding and exercisable | The following table summarizes information about stock options outstanding and exercisable at December 31, 2013:
|  | 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 ($) |
$2.09 - $2.09 |  | 43 |  | 1.0 |  | $2.09 |  | 43 |  | $2.09 |
$3.29 - $3.29 |  | 4,400 |  | 1.2 |  | $3.29 |  | 4,400 |  | $3.29 |
$5.72 - $6.21 |  | 23 |  | 1.8 |  | $6.11 |  | 23 |  | $6.11 |
$8.44 - $8.44 |  | 2,445 |  | 1.9 |  | $8.44 |  | 2,445 |  | $8.44 |
$11.36 - $15.60 |  | 145 |  | 4.8 |  | $13.43 |  | 143 |  | $13.39 |
$15.86 - $15.86 |  | 1,777 |  | 4.4 |  | $15.86 |  | 1,777 |  | $15.86 |
$15.94 - $17.82 |  | 1,381 |  | 5.9 |  | $17.75 |  | 1,000 |  | $17.77 |
$18.07 - $47.13 |  | 1,796 |  | 7.3 |  | $33.11 |  | 553 |  | $24.05 |
$47.65 - $70.54 |  | 956 |  | 9.1 |  | $56.25 |  | 16 |  | $62.65 |
$74.78 - $74.78 |  | 7 |  | 8.5 |  | $74.78 |  | 1 |  | $74.78 |
|  | 12,973 |  | 3.7 |  | $15.70 |  | 10,401 |  | $9.38
Summary of activities with respect to non-vested restricted stock awards and non-vested restricted stock units |
|  |  |  |  | Weighted |
|  | Number of |  |  | Average |
|  | Shares (in |  |  | Grant-Date |
|  | thousands) |  |  | Fair Value |
Non-vested at January 1, 2013 |  | 637 |  |  | $ | 46.97 |
Granted 01/01/13 - 03/31/13 |  | 8 |  |  | $ | 50.89 |
Granted 04/01/13 - 06/30/13 |  | 15 |  |  | $ | 54.64 |
Granted 07/01/13 - 09/30/13 |  | - |  |  | $ | - |
Granted 10/01/13 - 12/31/13 |  | 5 |  |  | $ | 54.57 |
Vested |  | (262) |  |  | $ | 43.87 |
Forfeited/cancelled |  | (12) |  |  | $ | 54.67 |
Non-vested at December 31, 2013 |  | 391 |  |  | $ | 49.27 |
Schedule of total compensation cost relating to incentive stock option, charged against income |
|  | 2013 |  | 2012 |  | 2011 |
Operating expenses |  | $ | 28,764 |  | $ | 28,413 |  | $ | 19,424 |
Total employee and non-employee share-based compensation expense included in income, before income tax |  | 28,764 |  | 28,413 |  | 19,424 |
Less: Amount of income tax benefit recognized in earnings |  | (7,730) |  | (8,933) |  | (6,646) |
Amount charged against net income |  | $ | 21,034 |  | $ | 19,480 |  | $ | 12,778 |

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