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CONTINGENCIES - Additional Information (Detail) | 12 Months Ended
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Dec. 31, 2014 Claim
Commitments and Contingencies Disclosure [Abstract] |
Legal proceedings | 0 orrf_NumberOfLegalProceedingsThatHaveMaterialEffect
Contingencies dismissed date | Aug. 23, 2013

X
- Definition Number of legal proceedings that have material effect. + References No definition available. + Details
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Namespace Prefix: | orrf_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

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- Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Definition Date the pending litigation matter was dismissed, in CCYY-MM-DD format. + References No definition available. + Details
Name: | us-gaap_LossContingencyDateOfDismissal
Namespace Prefix: | us-gaap_
Data Type: | xbrli:dateItemType
Balance Type: | na
Period Type: | duration