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Share-Based Awards Plan (Tables) | 12 Months Ended
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Dec. 31, 2012
Total Share-Based Compensation Cost Recognized | The following table summarizes the total compensation cost recognized by the Group:
|  | For the years ended December 31, |
|  | 2010 |  |  | 2011 |  |  | 2012 |  |  | 2012 |
|  | RMB |  |  | RMB |  |  | RMB |  |  | US$ |
|  | (In thousands) |
Expensed as cost of revenues |  |  | 6,302 |  |  |  | 7,527 |  |  |  | 10,105 |  |  |  | 1,622 |
Expensed as selling, general and administrative |  |  | 36,811 |  |  |  | 50,012 |  |  |  | 54,512 |  |  |  | 8,750 |
Expensed as research and development |  |  | 50,623 |  |  |  | 94,489 |  |  |  | 147,692 |  |  |  | 23,706 |
Capitalized as part of internal-used software |  |  | 226 |  |  |  | 1,700 |  |  |  | 1,944 |  |  |  | 312 |
Baidu, Inc. |
Option Activity | The following table summarizes the option activity for the year ended December 31, 2012:
|  | Number of shares |  |  | Weighted average exercise price(US$) |  |  | Weighted average remaining contractual life (Years) |  |  | Aggregate intrinsic value (US$ in thousands) |
Share options |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Outstanding, December 31, 2011 |  |  | 71,999 |  |  |  | 470.45 |  |  |  | 2.62 |  |  |  | 51,539 |
Granted |  |  | 171,488 |  |  |  | 1,094.80 |  |  |  |  |  |  |  |  |
Exercised |  |  | (33,041 | ) |  |  | 259.60 |  |  |  |  |  |  |  |  |
Forfeited/Cancelled |  |  | (875 | ) |  |  | 1,062.20 |  |  |  |  |  |  |  |  |
Expired |  |  | (233 | ) |  |  |  |  |  |  |  |  |  |  |  |
Outstanding, December 31, 2012 |  |  | 209,338 |  |  |  | 1,013.10 |  |  |  | 4.29 |  |  |  | 16,264 |
Vested and expected to vest at December 31, 2012 |  |  | 190,669 |  |  |  | 1,008.20 |  |  |  | 4.26 |  |  |  | 15,843 |
Exercisable at December 31, 2012 |  |  | 23,592 |  |  |  | 525.20 |  |  |  | 1.84 |  |  |  | 12,517 |
Assumptions Used to Estimate Fair Values of Share Options Granted | The following table presents the assumptions used to estimate the fair values of the share options granted in the years presented:
|  | 2010 |  |  | 2011 |  |  | 2012 |
Risk-free interest rate |  |  | 0.61%~1.13% |  |  |  | 0.31%~1.03% |  |  |  | 0.35%~0.43% |
Dividend yield |  |  | — |  |  |  | — |  |  |  | — |
Expected volatility range |  |  | 64.76%~69.70% |  |  |  | 48.20%~61.58% |  |  |  | 43.60%~44.72% |
Weighted average expected volatility |  |  | 68.12% |  |  |  | 58.27% |  |  |  | 43.75% |
Expected life (in years) |  |  | 2.65~2.66 |  |  |  | 2.66~3.00 |  |  |  | 2.67~3.08 |
Restricted Shares Activity | Restricted shares activity for the year ended December 31, 2012 was as follows:
|  | Number of shares |  |  | Weighted average grant date fair value(US$) |
Restricted shares |  |  |  |  |  |  |  |
Unvested, December 31, 2011 |  |  | 56,222 |  |  |  | 1,181.49 |
Granted |  |  | 85,131 |  |  |  | 1,152.10 |
Vested |  |  | (18,552 | ) |  |  | 1,113.60 |
Forfeited |  |  | (7,985 | ) |  |  | 1,270.90 |
Unvested, December 31, 2012 |  |  | 114,816 |  |  |  | 1,164.10 |

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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 the number and weighted-average exercise prices (or conversion ratios) for share options (or share units) that were outstanding at the beginning and end of the year, vested and expected to vest, exercisable or convertible at the end of the year, and the number of share options or share units that were granted, exercised or converted, forfeited, and expired during the year. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1) -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 -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (f)(2) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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