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STOCK-BASED COMPENSATION (Tables) | 12 Months Ended
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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

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- Definition Disclosure of the number and weighted-average grant date fair value for restricted stock and restricted stock units that were outstanding at the beginning and end of the year, and the number of restricted stock and restricted stock units that were granted, vested, or forfeited during the year. + References No definition available. + Details
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- Definition Tabular disclosure of option exercise prices, by grouped ranges, including the upper and lower limits of the price range, the number of shares under option, weighted average exercise price and remaining contractual option terms. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 123R -Paragraph 64 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 123R -Paragraph A240 -Subparagraph f -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition Tabular disclosure of the significant assumptions used during the year to estimate the fair value of stock options, including, but not limited to: (a) expected term of share options and similar instruments, (b) expected volatility of the entity's shares, (c) expected dividends, (d) risk-free rate(s), and (e) discount for post-vesting restrictions. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Topic 718 -SubTopic 10 -Publisher FASB -Number -Article -Subparagraph (f)(2) -Name Accounting Standards Codification -Paragraph 2 -Section 50 -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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