v2.4.0.6

Reconciliation of Carrying Amounts of Subsidiaries Consolidated by Group and Non Controlling Interests (Parenthetical) (Detail) (Shanghai Zhengduo Information Technology Co Ltd) | 1 Months Ended
--- | ---
Jan. 31, 2011 USD ($) | Jan. 31, 2011 CNY
Noncontrolling Interest [Line Items] |  |
Percentage of shareholding/ ownership purchased | 49.00% | 49.00%
Percentage of shareholding/ ownership previously owned | $ 556,000 | 3,500,000
Adjustments to additional paid in capital | $ 254,000 | 1,600,000

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