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Condensed Financial Information of the Parent Company (Details Textual) - USD ($) | 12 Months Ended
--- | ---
Dec. 31, 2015 | Dec. 31, 2014
Condensed Financial Information of the Parent Company (Textual) |  |
Restricted stock including paid-in capital, capital surplus and statutory reserves | $ 49,612,606 | $ 52,649,848

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- Definition Condensed financial information of the parent company textual. + References No definition available. + Details
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Namespace Prefix: | onp_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Definition Amount of equity-based compensation, related to restricted stock units or restricted stock awards, recognized as expense or an asset, if compensation is capitalized. + References No definition available. + Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration