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CONTINGENCIES (Detail)	Jun. 22, 2015	Jun. 30, 2016 USD ($) claim
Commitments and Contingencies Disclosure [Abstract]
Legal proceedings | claim		0
Number of days to file an amendment or stand on current amended complaint	30 days
Legal reserve established pertaining to the Commission's investigation | $		$ 1,000,000

X

- Definition

Loss Contingency, Claims Dismissed, Period To File An Amendment Or Notice To Stand On The Amended Complaint

+ References

No definition available.

+ Details

Name:	orrf_LossContingencyClaimsDismissedPeriodToFileAnAmendment
Namespace Prefix:	orrf_
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Balance Type:	na
Period Type:	duration

X

- Definition

Number of legal proceedings that have material effect.

+ References

No definition available.

+ Details

Name:	orrf_NumberOfLegalProceedingsThatHaveMaterialEffect
Namespace Prefix:	orrf_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

X

- References

No definition available.

+ Details

Name:	us-gaap_CommitmentsAndContingenciesDisclosureAbstract
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Reflects the estimated amount of loss from the specified contingency as of the balance sheet date.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 450
-SubTopic 20
-Section 50
-Paragraph 4
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=25496072&loc=d3e14435-108349

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 450
-SubTopic 20
-Section 50
-Paragraph 9
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=25496072&loc=d3e14557-108349

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant