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