v2.4.0.6

Employee Benefits - Additional Information (Detail) | 12 Months Ended
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Dec. 31, 2011 USD ($) | Dec. 31, 2011 CNY | Dec. 31, 2010 CNY | Dec. 31, 2009 CNY
Total amounts expensed in operations and comprehensive income for employee benefit | $ 6,763,231 | 42,567,100 | 33,346,393 | 22,890,106

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- Definition The full-time employees of the Company's subsidiaries and the VIE subsidiary that are incorporated in the PRC are entitled to staff welfare benefits, including medical care, housing subsidies, unemployment insurance and pension benefits. These companies are required to accrue for these benefits based on certain percentages of the employees' salaries in accordance with the relevant regulations, and to make contributions to the state-sponsored pension and medical plans out of the amounts accrued for medical and pension benefits. The Group's PRC subsidiaries and VIE subsidiary have no legal obligation for the benefits beyond the contributions made. + References No definition available. + Details
Name: | ga_DefinedBenefitPlansAmountRecognizedInPeriodicBenefitCostAndAccumulatedOtherComprehensiveIncome
Namespace Prefix: | ga_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration