v2.4.0.6

Investment In Equity Investees - Additional Information (Detail) (Yunfeng Fund) | 12 Months Ended |
--- | --- | ---
Dec. 31, 2011 USD ($) | Dec. 31, 2011 CNY | Dec. 31, 2011 Minimum
Schedule of Equity Method Investments [Line Items] |  |  |
Percentage of equity invested | 10.42% | 10.42% | 3.00%
Equity investment in total asset | $ 484,772,626 | 3,051,110,433 |
Equity investment in total liability | 14,249,866 | 89,687,234 |
Equity investment in operation | $ 10,011,092 | 63,008,814 |

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