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Concentration and Major Customers and Suppliers (Details)	3 Months Ended
	Mar. 31, 2015 Customers	Mar. 31, 2014 Customers
Concentration and major customers and suppliers (Textual)
Number of major suppliers	3onp_NumberOfSuppliers	2onp_NumberOfSuppliers
Number of customer contributed over 10% of total sales
Supplier A [Member]
Concentration and major customers and suppliers (Textual)
Percentage of revenue from Orient Paper HB	66.00%us-gaap_ConcentrationRiskPercentage1 / us-gaap_ConcentrationRiskByTypeAxis = onp_SupplierOneMember	78.00%us-gaap_ConcentrationRiskPercentage1 / us-gaap_ConcentrationRiskByTypeAxis = onp_SupplierOneMember
Supplier B [Member]
Concentration and major customers and suppliers (Textual)
Percentage of revenue from Orient Paper HB	18.00%us-gaap_ConcentrationRiskPercentage1 / us-gaap_ConcentrationRiskByTypeAxis = onp_SupplierTwoMember	8.00%us-gaap_ConcentrationRiskPercentage1 / us-gaap_ConcentrationRiskByTypeAxis = onp_SupplierTwoMember
Supplier C [Member]
Concentration and major customers and suppliers (Textual)
Percentage of revenue from Orient Paper HB	8.00%us-gaap_ConcentrationRiskPercentage1 / us-gaap_ConcentrationRiskByTypeAxis = onp_SupplierThreeMember

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- Definition

Number of customer contributed over 10% of total sales.

+ References

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Number of suppliers.

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- Definition

For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 825

-SubTopic 10

-Section 50

-Paragraph 21

-Subparagraph (a)

-URI http://asc.fasb.org/extlink&oid=49121117&loc=d3e13537-108611



Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 275

-SubTopic 10

-Section 50

-Paragraph 20

-URI http://asc.fasb.org/extlink&oid=51801978&loc=d3e6404-108592



Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 825

-SubTopic 10

-Section 50

-Paragraph 20

-URI http://asc.fasb.org/extlink&oid=49121117&loc=d3e13531-108611



Reference 4: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 275

-SubTopic 10

-Section 50

-Paragraph 18

-URI http://asc.fasb.org/extlink&oid=51801978&loc=d3e6351-108592

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