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Components of Share-Based Compensation Expense for Restricted Shares Issued to Employees in Absolute Amount and as Percentage of Net Revenue (Detail)
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12 Months Ended | ||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
Dec. 31, 2011
USD ($)
|
Dec. 31, 2011
CNY
|
Dec. 31, 2010
CNY
|
Dec. 31, 2009
CNY
|
Dec. 31, 2011
Restricted Stock
USD ($)
|
Dec. 31, 2011
Restricted Stock
CNY
|
Dec. 31, 2010
Restricted Stock
CNY
|
Dec. 31, 2011
Restricted Stock
Cost of services
USD ($)
|
Dec. 31, 2011
Restricted Stock
Cost of services
CNY
|
Dec. 31, 2010
Restricted Stock
Cost of services
CNY
|
Dec. 31, 2011
Restricted Stock
Research and product development expenses
USD ($)
|
Dec. 31, 2011
Restricted Stock
Research and product development expenses
CNY
|
Dec. 31, 2010
Restricted Stock
Research and product development expenses
CNY
|
Dec. 31, 2011
Restricted Stock
Sales and marketing expenses
USD ($)
|
Dec. 31, 2011
Restricted Stock
Sales and marketing expenses
CNY
|
Dec. 31, 2010
Restricted Stock
Sales and marketing expenses
CNY
|
Dec. 31, 2011
Restricted Stock
General and administrative expenses
USD ($)
|
Dec. 31, 2011
Restricted Stock
General and administrative expenses
CNY
|
Dec. 31, 2010
Restricted Stock
General and administrative expenses
CNY
|
|
| Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items] | |||||||||||||||||||
| Net revenue | $ 284,754,652 | 1,792,217,309 | 1,332,815,451 | 1,303,835,447 | |||||||||||||||
| Share-based compensation expense | $ 4,660,892 | 29,335,181 | 33,289,216 | 30,575,390 | $ 2,923,802 | 18,402,112 | 11,418,604 | $ 285,550 | 1,797,223 | 1,180,570 | $ 1,870,333 | 11,771,687 | 7,994,861 | $ 82,373 | 518,445 | 368,900 | $ 685,546 | 4,314,757 | 1,874,274 |
| Percentage of total revenue | 100.00% | 100.00% | |||||||||||||||||
| Percentage of share-base compensation | 1.03% | 1.03% | 0.10% | 0.10% | 0.66% | 0.66% | 0.03% | 0.03% | 0.24% | 0.24% | |||||||||