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Stock Option Plans (Summary of Stock Option Activity) (Detail) - Employee Stock Option [Member]	9 Months Ended
	Sep. 30, 2015 $ / shares shares
Number of shares outstanding
Outstanding, Beginning Balance	720,551
Granted	254,000
Exercised	(15,833)
Expired or Forfeited	(34,167)
Outstanding, Ending Balance	924,551
Weighted Average Exercise Price
Outstanding, Beginning Balance | $ / shares	$ 4.46
Granted | $ / shares	5.45
Exercised | $ / shares	2.60
Expired or Forfeited | $ / shares	3.38
Outstanding, Ending Balance | $ / shares	$ 4.81

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

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-Publisher FASB



-Name Accounting Standards Codification



-Topic 718



-SubTopic 10



-Section 50



-Paragraph 2



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



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

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

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

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Share-based Compensation Arrangement by Share-based Payment Award, Options, Weighted Average Exercise Price [Abstract]

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