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Basis of Presentation - Additional Information (Detail) In Thousands, unless otherwise specified	Sep. 30, 2012 USD ($)	Sep. 30, 2012 CNY	Sep. 28, 2012
Variable Interest Entity [Line Items]
Net assets of VIEs (in which the Company has no legal ownership)	$ 79,414	499,102
Exchange rate used for conversion of financial statements from RMB to US dollar			6.2848

X

- Definition

Translation rate of amounts from RMB into US$ for the convenience of the reader have been calculated at the exchange rate on the last date of calendar year-end reporting period as published on the website of the Federal Reserve Board. No representation is made that the RMB amounts could have been, or could be, converted into U.S. dollars at such rate.

+ References

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X

- Definition

The net carrying amount of the consolidated Variable Interest Entity's assets and liabilities included in the reporting entity's statement of financial position.

+ References

No definition available.

+ Details

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Period Type:	instant

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- Details

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