Exchange Rates Adopted to Translate Amounts from RMB into United States Dollars (Detail)	3 Months Ended	12 Months Ended
Dec. 31, 2012	Dec. 30, 2011	Mar. 31, 2012	Dec. 31, 2011	Sep. 30, 2011
Foreign Currency Exchange Rate [Line Items]
Quarter End RMB Exchange Rate (RMB/USD$)	6.2855		6.2943	6.3009	6.3549
Quarterly Average RMB Exchange Rate (RMB/USD$)	6.2992	6.3403	6.3933

Foreign exchange rate used to translate amounts denominated in functional currency to reporting currency.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 830

-SubTopic 30

-Section S99

-Paragraph 1

-URI http://asc.fasb.org/extlink&oid=6897108&loc=SL6897125-166521

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