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Shareholders' Equity and Regulatory Capital - Additional Information (Detail) (Maximum [Member], USD $) | Jan. 08, 2013
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Maximum [Member] |
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items] |
Aggregate capital, amount | $ 80,000,000

X
- Definition Authorized Share Capital + References No definition available. + Details
Name: | orrf_AuthorizedShareCapital
Namespace Prefix: | orrf_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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