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RESTRICTIONS ON DIVIDENDS, LOANS AND ADVANCES (Detail) $ in Thousands | Dec. 31, 2016 USD ($)
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Equity [Abstract] |
Amount available for dividend distribution | $ 6,574
Maximum amount available to loan nonbank affiliates | $ 12,798

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- Definition Maximum amount available for loan by bank. + References No definition available. + Details
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Namespace Prefix: | orrf_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- References No definition available. + Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Definition Amount of dividends that can be declared or paid without approval of regulatory agency. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08.(e)) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690 + Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant