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4. PROPERTY, PLANT AND EQUIPMENT, NET (Detalis Narrative) (USD $) | 12 Months Ended
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Dec. 31, 2014 | Dec. 31, 2013
Property, Plant and Equipment [Abstract] |  |
Property ownership carrying value | $ 37,219,221 gure_PropertyOwnershipCarryingValue | $ 39,565,302 gure_PropertyOwnershipCarryingValue
Depreciation and amortization expense | 27,287,976 us-gaap_DepreciationDepletionAndAmortization | 27,109,455 us-gaap_DepreciationDepletionAndAmortization
Cost of net revenue | 25,811,070 gure_CostOfRevenues1 | 25,311,885 gure_CostOfRevenues1
Cost of administrative expenses | 1,476,906 gure_CostOfAdministrativeExpenses | 1,797,570 gure_CostOfAdministrativeExpenses
Ordinary repair and maintenance expenses | $ 1,050,204 gure_RepairAndMaintenanceExpenses | $ 1,566 gure_RepairAndMaintenanceExpenses

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Namespace Prefix: | gure_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- Definition Custom Element. + References No definition available. + Details
Name: | gure_CostOfRevenues1
Namespace Prefix: | gure_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- Definition Custom Element. + References No definition available. + Details
Name: | gure_PropertyOwnershipCarryingValue
Namespace Prefix: | gure_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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- Definition Custom Element. + References No definition available. + Details
Name: | gure_RepairAndMaintenanceExpenses
Namespace Prefix: | gure_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- Definition The aggregate expense recognized in the current period that allocates the cost of tangible assets, intangible assets, or depleting assets to periods that benefit from use of the assets. + References Reference 1: 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=31042434&loc=d3e3602-108585 + Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
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- Details
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Namespace Prefix: | us-gaap_
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