Summary of Significant Accounting Policies (Details)	Dec. 31, 2014 CNY
Summary of Significant Accounting Policies
Rate used to convert RMB to USD	6.1190born_ForeignCurrencyTranslationRate

Represents the exchange rate used for convenience translation from reporting currency to additional disclosures in another currency.

No definition available.

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Namespace Prefix:	born_
Data Type:	xbrli:pureItemType
Balance Type:	na
Period Type:	instant