Stock-Based Compensation - Stock Option Activity (Detail)	3 Months Ended
Sep. 30, 2015 $ / shares shares
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Number of options, Beginning balance	2,765,229
Number of options, Granted	105,000
Number of options, Exercised	0
Number of options, Cancelled	(76,000)
Number of options, Ending balance	2,794,229
Weighted-average exercise price per share, Beginning balance \| $ / shares	$ 2.49
Weighted-average exercise price per share, Granted \| $ / shares	0.43
Weighted-average exercise price per share, Exercised \| $ / shares	0
Weighted-average exercise price per share, Cancelled \| $ / shares	1.39
Weighted-average exercise price per share, Ending balance \| $ / shares	$ 2.44

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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

-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

Gross 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.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

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- Definition

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

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

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

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