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Prepaid Land Leases - Additional Information (Detail) (USD $) | 3 Months Ended | 6 Months Ended |  |
--- | --- | --- | --- | ---
Jun. 30, 2012 | Jun. 30, 2011 | Jun. 30, 2012 | Jun. 30, 2011 | Jun. 30, 2012 Land | Jun. 30, 2012 Land Minimum | Jun. 30, 2012 Land Maximum | Jun. 30, 2012 Assets Held under Capital Leases sqkm | Dec. 31, 2011 Assets Held under Capital Leases sqkm
Capital Leased Assets [Line Items] |  |  |  |  |  |  |  |  |
lease terms |  |  |  |  | 20 years | 1 year | 50 years |  |
Amortization of prepaid land leases | $ 50,180 | $ 72,989 | $ 105,051 | $ 102,831 |  |  |  |  |
Leased Land with no land use rights certificates, approximate area |  |  |  |  |  |  |  | 101.54 | 101.52
Leased Land with no land use rights certificates, carrying value |  |  |  |  |  |  |  | $ 1,081,310 | $ 766,748

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- Definition Lease Term + References No definition available. + Details
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- Definition The expense charged against earnings for the periodic recognition of capitalized leases. This element may apply to energy companies that lease mineral producing properties and to other enterprises that capitalize property, plant, or equipment obtained through capital leases. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 28 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.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. Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6943989&loc=d3e3602-108585 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 30 -Section 45 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=6455314&loc=d3e45031-112735 + Details
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- Definition Area of land held. + References No definition available. + Details
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- Details
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- Definition The net amount of capitalized assets classified as property, plant and equipment not otherwise defined in the taxonomy. + References No definition available. + Details
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