15. Assets Held for Sale (Detail) (USD $)	Oct. 28, 2011
Other Assets Held-for-sale	$ 2,408,770
Baiquan District [Member] \| Property, Plant, and Equipment [Member]
Assets Held-for-sale, Long Lived	2,100,000
Baiquan District [Member] \| Prepaid Leases [Member]
Assets Held-for-sale, Long Lived	$ 154,000

The lower of the carrying value or fair value less cost to sell of assets held-for-sale, other than loans receivable.

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 205

-SubTopic 20

-Section 45

-Paragraph 10

-URI http://asc.fasb.org/extlink&oid=6892542&loc=d3e1107-107759

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 360

-SubTopic 10

-Section 35

-Paragraph 43

-URI http://asc.fasb.org/extlink&oid=16397438&loc=d3e1739-110224

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 144

-Paragraph 34, 46

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant