Stockholders' Equity - Summary of Stock Options Outstanding and Exercisable under All Stock Option Plans (Detail) (USD $)	12 Months Ended
Jun. 30, 2013
Share Based Compensation Shares Authorized Under Stock Option Plans Exercise Price Range [Line Items]
Range of Exercise Prices, minimum	$ 0.30
Range of Exercise Prices, maximum	$ 9.00
Options Outstanding, Number	2,271,309
Options Outstanding, Weighted Average Remaining Contractual Life	6 years 1 month 24 days
Options Outstanding, Weighted Average Exercise Price	$ 2.72
Options Exercisable, Number	1,487,794
Options Exercisable, Weighted Average Exercise Price	$ 1.47
$ 0.30-$ 0.60
Share Based Compensation Shares Authorized Under Stock Option Plans Exercise Price Range [Line Items]
Range of Exercise Prices, minimum	$ 0.30
Range of Exercise Prices, maximum	$ 0.60
Options Outstanding, Number	39,268
Options Outstanding, Weighted Average Remaining Contractual Life	5 years 26 days
Options Outstanding, Weighted Average Exercise Price	$ 0.46
Options Exercisable, Number	39,268
Options Exercisable, Weighted Average Exercise Price	$ 0.46
$ 0.64-$ 0.64
Share Based Compensation Shares Authorized Under Stock Option Plans Exercise Price Range [Line Items]
Range of Exercise Prices, minimum	$ 0.64
Range of Exercise Prices, maximum	$ 0.64
Options Outstanding, Number	349,064
Options Outstanding, Weighted Average Remaining Contractual Life	1 year 10 months 28 days
Options Outstanding, Weighted Average Exercise Price	$ 0.64
Options Exercisable, Number	349,064
Options Exercisable, Weighted Average Exercise Price	$ 0.64
$ 0.70- $ 0.70
Share Based Compensation Shares Authorized Under Stock Option Plans Exercise Price Range [Line Items]
Range of Exercise Prices, minimum	$ 0.70
Range of Exercise Prices, maximum	$ 0.70
Options Outstanding, Number	1,000
Options Outstanding, Weighted Average Remaining Contractual Life	2 years 3 months 26 days
Options Outstanding, Weighted Average Exercise Price	$ 0.70
Options Exercisable, Number	1,000
Options Exercisable, Weighted Average Exercise Price	$ 0.70
$ 0.74-$ 0.74
Share Based Compensation Shares Authorized Under Stock Option Plans Exercise Price Range [Line Items]
Range of Exercise Prices, minimum	$ 0.74
Range of Exercise Prices, maximum	$ 0.74
Options Outstanding, Number	554,279
Options Outstanding, Weighted Average Remaining Contractual Life	6 years 1 month 17 days
Options Outstanding, Weighted Average Exercise Price	$ 0.74
Options Exercisable, Number	524,430
Options Exercisable, Weighted Average Exercise Price	$ 0.74
$ 0.75-$ 1.10
Share Based Compensation Shares Authorized Under Stock Option Plans Exercise Price Range [Line Items]
Range of Exercise Prices, minimum	$ 0.75
Range of Exercise Prices, maximum	$ 1.10
Options Outstanding, Number	252,913
Options Outstanding, Weighted Average Remaining Contractual Life	4 years 1 month 17 days
Options Outstanding, Weighted Average Exercise Price	$ 0.97
Options Exercisable, Number	213,828
Options Exercisable, Weighted Average Exercise Price	$ 0.99
$ 1.13-$ 3.32
Share Based Compensation Shares Authorized Under Stock Option Plans Exercise Price Range [Line Items]
Range of Exercise Prices, minimum	$ 1.13
Range of Exercise Prices, maximum	$ 3.32
Options Outstanding, Number	229,264
Options Outstanding, Weighted Average Remaining Contractual Life	5 years 1 month 2 days
Options Outstanding, Weighted Average Exercise Price	$ 1.99
Options Exercisable, Number	164,047
Options Exercisable, Weighted Average Exercise Price	$ 1.97
$ 3.64-$ 4.60
Share Based Compensation Shares Authorized Under Stock Option Plans Exercise Price Range [Line Items]
Range of Exercise Prices, minimum	$ 3.64
Range of Exercise Prices, maximum	$ 4.60
Options Outstanding, Number	227,080
Options Outstanding, Weighted Average Remaining Contractual Life	8 years 7 months 28 days
Options Outstanding, Weighted Average Exercise Price	$ 4.08
Options Exercisable, Number	46,609
Options Exercisable, Weighted Average Exercise Price	$ 3.81
$ 4.65-$ 5.28
Share Based Compensation Shares Authorized Under Stock Option Plans Exercise Price Range [Line Items]
Range of Exercise Prices, minimum	$ 4.65
Range of Exercise Prices, maximum	$ 5.28
Options Outstanding, Number	258,566
Options Outstanding, Weighted Average Remaining Contractual Life	8 years 7 months 17 days
Options Outstanding, Weighted Average Exercise Price	$ 5.18
Options Exercisable, Number	82,995
Options Exercisable, Weighted Average Exercise Price	$ 5.20
$ 5.30-$7.97
Share Based Compensation Shares Authorized Under Stock Option Plans Exercise Price Range [Line Items]
Range of Exercise Prices, minimum	$ 5.30
Range of Exercise Prices, maximum	$ 7.97
Options Outstanding, Number	230,025
Options Outstanding, Weighted Average Remaining Contractual Life	8 years 9 months
Options Outstanding, Weighted Average Exercise Price	$ 6.45
Options Exercisable, Number	65,471
Options Exercisable, Weighted Average Exercise Price	$ 6.20
$8.02-$9.00
Share Based Compensation Shares Authorized Under Stock Option Plans Exercise Price Range [Line Items]
Range of Exercise Prices, minimum	$ 8.02
Range of Exercise Prices, maximum	$ 9.00
Options Outstanding, Number	129,850
Options Outstanding, Weighted Average Remaining Contractual Life	9 years 9 months 11 days
Options Outstanding, Weighted Average Exercise Price	$ 8.38
Options Exercisable, Number	1,082
Options Exercisable, Weighted Average Exercise Price	$ 8.91

Weighted average exercise price as of the balance sheet date for those equity-based payment arrangements exercisable and outstanding.

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- Definition

The floor of a customized range of exercise prices for purposes of disclosing shares potentially issuable under outstanding stock option awards on all stock option plans and other required information pertaining to awards in the customized range.

+ References

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

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 123R

-Paragraph 64

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section 50

-Paragraph 2

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- Definition

The number of shares reserved for issuance pertaining to the outstanding exercisable stock options as of the balance sheet date in the customized range of exercise prices for which the market and performance vesting condition has been satisfied.

+ References

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

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 123R

-Paragraph A240

-Subparagraph b(1)(c)

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (c)(iii)

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

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- Definition

The number of shares reserved for issuance pertaining to the outstanding stock options as of the balance sheet date for all option plans in the customized range of exercise prices.

+ 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)(i)-(ii)

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

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-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 123R

-Paragraph A240

-Subparagraph b(1)(a, b)

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

+ Details

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- Definition

The weighted average price as of the balance sheet date at which grantees could acquire the underlying shares with respect to all outstanding stock options which are in the customized range of exercise prices.

+ References

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- Definition

Weighted average remaining contractual term of outstanding stock options, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

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- Definition

The ceiling of a customized range of exercise prices for purposes of disclosing shares potentially issuable under outstanding stock option awards on all stock option plans and other required information pertaining to awards in the customized range.

+ References

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