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Related Party Transactions (Details)
0 Months Ended 3 Months Ended 0 Months Ended 3 Months Ended
Aug. 07, 2013
USD ($)
Apartment
Aug. 07, 2013
CNY
Mar. 31, 2015
USD ($)
Mar. 31, 2014
USD ($)
Dec. 31, 2014
USD ($)
Mar. 31, 2015
Hebei Fangsheng [Member]
USD ($)
Dec. 31, 2014
Hebei Fangsheng [Member]
USD ($)
Mar. 31, 2015
Mr. Liu [Member]
USD ($)
Mar. 09, 2015
Mr. Liu [Member]
USD ($)
Dec. 31, 2014
Mr. Liu [Member]
USD ($)
Dec. 10, 2014
Mr. Liu [Member]
Orient Paper HB [Member]
Mar. 31, 2015
Mr. Liu [Member]
Orient Paper HB [Member]
USD ($)
Dec. 31, 2014
Mr. Liu [Member]
Orient Paper HB [Member]
USD ($)
Related Party Transactions (Textual)                          
Loans payable to related party     $ (2,377,962)us-gaap_RelatedPartyTransactionDueFromToRelatedPartyCurrent   $ (2,386,978)us-gaap_RelatedPartyTransactionDueFromToRelatedPartyCurrent     $ 12,146,449us-gaap_RelatedPartyTransactionDueFromToRelatedPartyCurrent
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= onp_MrZhenyongLiuMember
$ 2,377,962us-gaap_RelatedPartyTransactionDueFromToRelatedPartyCurrent
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= onp_MrZhenyongLiuMember
$ 12,192,502us-gaap_RelatedPartyTransactionDueFromToRelatedPartyCurrent
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= onp_MrZhenyongLiuMember
  $ 2,377,962us-gaap_RelatedPartyTransactionDueFromToRelatedPartyCurrent
/ dei_LegalEntityAxis
= onp_HebeiBaodingOrientPaperMillingCompanyLimitedMember
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= onp_MrZhenyongLiuMember
$ 2,386,978us-gaap_RelatedPartyTransactionDueFromToRelatedPartyCurrent
/ dei_LegalEntityAxis
= onp_HebeiBaodingOrientPaperMillingCompanyLimitedMember
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= onp_MrZhenyongLiuMember
Proceeds from shareholder loan     80,000us-gaap_ProceedsFromRepaymentsOfRelatedPartyDebt 123,500us-gaap_ProceedsFromRepaymentsOfRelatedPartyDebt                  
Interest rate on loans                     6.00%us-gaap_RelatedPartyTransactionRate
/ dei_LegalEntityAxis
= onp_HebeiBaodingOrientPaperMillingCompanyLimitedMember
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= onp_MrZhenyongLiuMember
6.15%us-gaap_RelatedPartyTransactionRate
/ dei_LegalEntityAxis
= onp_HebeiBaodingOrientPaperMillingCompanyLimitedMember
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= onp_MrZhenyongLiuMember
 
Term of facility and loan payable                       3 years  
Unsecured loan epiration date                     Dec. 10, 2017    
Working capital     17,554,387onp_WorkingCapital   17,915,286onp_WorkingCapital             9,768,487onp_WorkingCapital
/ dei_LegalEntityAxis
= onp_HebeiBaodingOrientPaperMillingCompanyLimitedMember
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= onp_MrZhenyongLiuMember
9,805,524onp_WorkingCapital
/ dei_LegalEntityAxis
= onp_HebeiBaodingOrientPaperMillingCompanyLimitedMember
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= onp_MrZhenyongLiuMember
Extended maturity date of loans from related party                       Dec. 31, 2015  
Rental payment 162,808us-gaap_PaymentsForRent 1,000,000us-gaap_PaymentsForRent                      
Industrial building lease term 3 years 3 years                      
Number of dormitory buildings 3onp_NumberOfDormitoryBuildings 3onp_NumberOfDormitoryBuildings                      
Loan from related parties, interest expense     182,196us-gaap_InterestExpenseRelatedParty 36,707us-gaap_InterestExpenseRelatedParty                  
Accrued interest     940,563us-gaap_InterestPayableCurrent   761,242us-gaap_InterestPayableCurrent                
Accrued rental           $ 267,741us-gaap_AccruedRentCurrentAndNoncurrent
/ dei_LegalEntityAxis
= onp_HebeiFangshengRealEstateDevelopmentCompanyLimitedMember
$ 227,900us-gaap_AccruedRentCurrentAndNoncurrent
/ dei_LegalEntityAxis
= onp_HebeiFangshengRealEstateDevelopmentCompanyLimitedMember