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Stock Option Activity (Detail)	9 Months Ended
	Sep. 30, 2015 $ / shares shares
Number of Shares
Outstanding and Exercisable at beginning of period | shares	75,000
Granted | shares	0
Exercised | shares	0
Cancelled | shares	(75,000)
Weighted Average Exercise Price
Outstanding and Exercisable at beginning of period	$ 20.69
Granted	0
Exercised	0
Cancelled	$ 20.69

X

- Definition

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



-Topic 718



-SubTopic 10



-Section 50



-Paragraph 2



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



-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

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- Definition

Net number of share options (or share units) granted during the period.

+ References

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-Publisher FASB



-Name Accounting Standards Codification



-Topic 718



-SubTopic 10



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-Paragraph 2



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



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- Definition

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

+ References

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-Publisher FASB



-Name Accounting Standards Codification



-Topic 718



-SubTopic 10



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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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- Definition

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

+ References

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-Publisher FASB



-Name Accounting Standards Codification



-Topic 718



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- Definition

Weighted average price at which option holders acquired shares when converting their stock options into shares.

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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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- Definition

Weighted average per share amount at which grantees can acquire shares of common stock by exercise of options.

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Number of share options (or share units) exercised during the current period.

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