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SHARE-BASED COMPENSATION PLANS - Summary of Outstanding Stock Options (Detail) - 6 months ended Jun. 30, 2015 - Employee Stock Option - Orrstown 2011 Incentive Stock Plan - $ / shares	Total
Stock Options, Number of Shares
Outstanding at beginning of year	148,193
Forfeited	(18,413)
Expired	(27,600)
Options outstanding and exercisable, at period end	102,180
Stock Options, Weighted Average Exercise Price (usd per share)
Outstanding at beginning of year	$ 31.18
Forfeited	31.73
Expired	39.93
Options outstanding and exercisable, at period end	$ 28.72

X

- Definition

For presentations that combine terminations, the number of shares under options that were cancelled during the reporting period as a result of occurrence of a terminating event specified in contractual agreements pertaining to the stock option plan or that expired.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef



-Publisher FASB



-Name Accounting Standards Codification



-Topic 718



-SubTopic 10



-Section 50



-Paragraph 2



-Subparagraph (c)(1)(iv)(3)-(4)



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Weighted average price of options that were either forfeited or expired.

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-Publisher FASB



-Name Accounting Standards Codification



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-SubTopic 10



-Section 50



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-Subparagraph (c)(1)(iv)(3)-(4)



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The number of shares under options that were cancelled during the reporting period as a result of occurrence of a terminating event specified in contractual agreements pertaining to the stock option plan.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef



-Publisher FASB



-Name Accounting Standards Codification



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-SubTopic 10



-Section 50



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-Subparagraph (c)(1)(iv)(3)



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Number of options outstanding, including both vested and non-vested options.

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A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

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Weighted average price at which grantees can acquire the shares reserved for issuance under the stock option plan.

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-Publisher FASB



-Name Accounting Standards Codification



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Weighted average price at which grantees could have acquired the underlying shares with respect to stock options that were terminated.

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