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Financial Instruments with Off-Balance-Sheet Risk - Commitments and Conditional Obligations (Detail) (USD $) In Thousands, unless otherwise specified | Sep. 30, 2014 | Dec. 31, 2013
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Revolving, Open Ended Home Equity Loans [Member] |  |
Commitments and conditional obligations |  |
Contract or Notional Amount | $ 81,743 | $ 86,253
1-4 Family Residential Construction Loans [Member] |  |
Commitments and conditional obligations |  |
Contract or Notional Amount | 673 | 2,657
Commercial Real Estate, Construction and Land Development Loans [Member] |  |
Commitments and conditional obligations |  |
Contract or Notional Amount | 10,419 | 2,961
Commercial, Industrial and Other Loans [Member] |  |
Commitments and conditional obligations |  |
Contract or Notional Amount | 64,854 | 45,629
Standby Letters of Credit [Member] |  |
Commitments and conditional obligations |  |
Contract or Notional Amount | $ 7,003 | $ 6,267

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- Details
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Namespace Prefix: | orrf_
Data Type: | xbrli:stringItemType
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- Definition The face amount of financial liabilities, which are not recognized in the financial statements (off-balance sheet) because they fail to meet some other criterion for recognition. + References No definition available. + Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
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