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Assets Acquisitions - Additional Information (Detail)	3 Months Ended			6 Months Ended								3 Months Ended			6 Months Ended	3 Months Ended	6 Months Ended
	Jun. 30, 2012 USD ($)	Jun. 30, 2011 USD ($)	Mar. 31, 2011 USD ($)	Jun. 30, 2012 USD ($)	Jun. 30, 2011 USD ($)	Jun. 30, 2012 Land USD ($)	Jun. 30, 2012 Land CNY	Jun. 30, 2012 Land Minimum	Jun. 30, 2012 Land Maximum	Jun. 30, 2012 Land Use Rights USD ($)	Jun. 30, 2012 Land Use Rights CNY	Jun. 30, 2011 Crude Salt Fields USD ($)	Jun. 30, 2011 Extraction Wells, Transmission Channels and Ducts USD ($)	Jun. 30, 2011 Plant And Machinery Minimum	Jun. 30, 2012 Plant And Machinery Minimum	Jun. 30, 2011 Plant And Machinery Maximum	Jun. 30, 2012 Plant And Machinery Maximum
Property, Plant, and Equipment Disclosure [Line Items]
Capital lease period						20 years	20 years	1 year	50 years	20 years	20 years
Capital lease, annual payment					$ 3,127,913	$ 295,365	1,877,000			$ 495,651	3,123,000
Capital lease expiration period						Dec. 31, 2030	Dec. 31, 2030			Dec. 31, 2030	Dec. 31, 2030
Present value of the minimum lease payments	3,025,078			3,025,078		3,127,913
Capital improvement in reconstruction and renovation work	$ 7,849,287	$ 37,076,209	$ 3,050,400	$ 7,849,287	$ 43,306,199							$ 12,379,153	$ 20,087,600
Property, plant and equipment, Maximum useful life														5 years	5 years	8 years	8 years

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- Definition

Lease Term

+ References

No definition available.

+ Details

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- Details

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X

- Definition

The increase during the period in capital lease obligations due to entering into new capital leases.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 50

-Paragraph 4

-URI http://asc.fasb.org/extlink&oid=6367179&loc=d3e4313-108586



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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 50

-Paragraph 3

-URI http://asc.fasb.org/extlink&oid=6367179&loc=d3e4304-108586



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

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 95

-Paragraph 32

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.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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- Definition

Present value of minimum lease payments for capital leases net of executory costs, including amounts paid by the lessee to the lessor for insurance, maintenance and taxes.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 840

-SubTopic 30

-Section 50

-Paragraph 1

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=6455398&loc=d3e45280-112737



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

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 13

-Paragraph 16

-Subparagraph a(ii)

-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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X

- Definition

Date which lease or group of leases is set to expire, in CCYY-MM-DD format.

+ References

No definition available.

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- Definition

Acquisition of long-lived, physical assets used in the normal conduct of business and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment.

+ References

No definition available.

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- Definition

Useful life of long lived, physical assets used in the normal conduct of business and not intended for resale, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Examples include, but not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment.

+ References

No definition available.

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