Construction in Progress (Detail) (USD $)	Jun. 30, 2013	Dec. 31, 2012
Property, Plant and Equipment [Line Items]
Construction in progress	$ 623,108	$ 175,006
Construction of equipment
Property, Plant and Equipment [Line Items]
Construction in progress	178,031	175,006
Construction of buildings
Property, Plant and Equipment [Line Items]
Construction in progress	$ 445,077	$ 0

Amount of structure or a modification to a structure under construction. Includes recently completed structures or modifications to structures that have not been placed into service.

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 360

-SubTopic 10

-Section 50

-Paragraph 1

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=6391035&loc=d3e2868-110229

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