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Organization and Business Background (Details Textual)
0 Months Ended 1 Months Ended 3 Months Ended
Feb. 10, 2010
CNY
Dec. 31, 2010
Jun. 30, 2009
Shengde Holdings [Member]
Oct. 29, 2007
Dongfang Holding [Member]
Jun. 30, 2010
Orient Paper Shengde [Member]
USD ($)
Feb. 10, 2010
Orient Paper Shengde [Member]
USD ($)
Jun. 24, 2009
Orient Paper Shengde [Member]
USD ($)
Mar. 31, 2015
Orient Paper HB [Member]
Mar. 31, 2014
Orient Paper HB [Member]
Dec. 31, 2014
Orient Paper HB [Member]
Feb. 10, 2010
Orient Paper HB [Member]
USD ($)
Organization and Business Background (Textual)                      
Percentage of ownership     100.00%us-gaap_VariableInterestEntityOwnershipPercentage
/ us-gaap_BusinessAcquisitionAxis
= onp_ShengdeHoldingsMember
100.00%us-gaap_VariableInterestEntityOwnershipPercentage
/ us-gaap_BusinessAcquisitionAxis
= onp_DongfangHoldingMember
             
Shares of common stock issued to Dongfang Holding shareholders under merger agreement       7,450,497us-gaap_StockIssuedDuringPeriodSharesAcquisitions
/ us-gaap_BusinessAcquisitionAxis
= onp_DongfangHoldingMember
             
Registered capital         $ 60,000,000us-gaap_Capital
/ us-gaap_BusinessAcquisitionAxis
= onp_BaodingShengdeMember
  $ 10,000,000us-gaap_Capital
/ us-gaap_BusinessAcquisitionAxis
= onp_BaodingShengdeMember
       
Service fees percentage of annual net profit                     80.00%onp_ServiceFeePercentageOfNetProfit
/ us-gaap_BusinessAcquisitionAxis
= onp_HebeiBaodingOrientPaperMillingCompanyLimitedMember
Exercise price for the options 1invest_InvestmentOptionsExercisePrice                    
Loans terminated           $ 10,000,000us-gaap_TerminationLoans
/ us-gaap_BusinessAcquisitionAxis
= onp_BaodingShengdeMember
        $ 10,000,000us-gaap_TerminationLoans
/ us-gaap_BusinessAcquisitionAxis
= onp_HebeiBaodingOrientPaperMillingCompanyLimitedMember
Percentage of distributable profit of Orient Paper HB   100.00%onp_PercentageShareOfDistributableProfit                  
Percentage of revenue from Orient Paper HB               100.00%us-gaap_ConcentrationRiskPercentage1
/ us-gaap_BusinessAcquisitionAxis
= onp_HebeiBaodingOrientPaperMillingCompanyLimitedMember
95.00%us-gaap_ConcentrationRiskPercentage1
/ us-gaap_BusinessAcquisitionAxis
= onp_HebeiBaodingOrientPaperMillingCompanyLimitedMember
   
Percentage of assets accounted by Orient Paper HB               83.75%onp_EntityWideAssetsMajorCustomerPercentage
/ us-gaap_BusinessAcquisitionAxis
= onp_HebeiBaodingOrientPaperMillingCompanyLimitedMember
  83.73%onp_EntityWideAssetsMajorCustomerPercentage
/ us-gaap_BusinessAcquisitionAxis
= onp_HebeiBaodingOrientPaperMillingCompanyLimitedMember