Common stock reserved for issuance under stock holders incentive plan.

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- Definition

Represents the expense recognized during the period arising from equity-based compensation arrangements (for example, shares of stock, unit, stock options or other equity instruments) with employees, directors and certain consultants qualifying for treatment as employees.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

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-Publisher SEC

-Name Staff Accounting Bulletin (SAB)

-Number Topic 14

-Section F

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- Definition

Aggregate number of common shares reserved for future issuance.

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

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- Definition

Unrecognized cost of unvested share-based compensation awards.

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-Publisher FASB

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- Definition

Weighted average period over which unrecognized compensation is expected to be recognized for equity-based compensation plans, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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- Definition

The noncash expense that represents the cost of restricted stock or unit distributed to employees as compensation.

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

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- Definition

The maximum number of shares (or other type of equity) originally approved (usually by shareholders and board of directors), net of any subsequent amendments and adjustments, for awards under the equity-based compensation plan. As stock or unit options and equity instruments other than options are awarded to participants, the shares or units remain authorized and become reserved for issuance under outstanding awards (not necessarily vested).

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-Publisher FASB

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- Definition

The difference between the maximum number of shares (or other type of equity) authorized for issuance under the plan (including the effects of amendments and adjustments), and the sum of: 1) the number of shares (or other type of equity) already issued upon exercise of options or other equity-based awards under the plan; and 2) shares (or other type of equity) reserved for issuance on granting of outstanding awards, net of cancellations and forfeitures, if applicable.

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Amount of accumulated difference between fair value of underlying shares on dates of exercise and exercise price on options exercised (or share units converted) into shares.

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- Definition

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

+ References

No definition available.

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- Definition

The weighted average grant-date fair value of options granted during the reporting period as calculated by applying the disclosed option pricing methodology.

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- Definition

Amount by which the current fair value of the underlying stock exceeds the exercise price of options outstanding.

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- Definition

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

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- Definition

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

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- Definition

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

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Stockholders' Equity - Additional Information (Detail) (USD $)	3 Months Ended		6 Months Ended		12 Months Ended	0 Months Ended
	Mar. 31, 2015	Mar. 31, 2014	Mar. 31, 2015	Mar. 31, 2014	Sep. 30, 2014	Feb. 19, 2014	Jan. 31, 2011
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of options granted to employees			1,565,500	0
Unrecognized compensation expense	$ 6,270,849		$ 6,270,849
Weighted average period for unrecognized compensation expense expected to be recognized			2 years 9 months 18 days
Options outstanding	3,710,721	2,708,063	3,710,721	2,708,063	2,334,326
Recognized compensation expense	871,120	916,050	1,685,181	1,745,121
Total intrinsic value of options exercised			4,083	468,462
Weighted average fair value of options granted			$ 2.04
Weighted-average remaining contractual term			7 years 29 days	6 years 9 months 18 days	5 years 5 months 16 days
Weighted-average exercise price, outstanding shares	$ 3.51	$ 4.19	$ 3.51	$ 4.19	$ 4.11
Aggregate intrinsic value, outstanding shares	2,725,294	3,176,655	2,725,294	3,176,655
Recognized stock-based compensation expense related to the outstanding RSUs	302,369us-gaap_RestrictedStockExpense	361,056us-gaap_RestrictedStockExpense	642,339us-gaap_RestrictedStockExpense	625,805us-gaap_RestrictedStockExpense
2012 Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Purchase of common stock	2,232,477		2,232,477
Number of common stock reserved for future grants	1,292,117		1,292,117
2010 Stock Option Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options outstanding	1,478,244		1,478,244
Director Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of common stock reserved for future grants	510,171		510,171
Restricted stock units [Member] \| 2012 Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options outstanding	541,091		541,091
Restricted Stock Units (RSUs) [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized compensation expense	2,539,975		2,539,975
Weighted average period for unrecognized compensation expense expected to be recognized			2 years 8 months 12 days
Restricted Stock Units (RSUs) [Member] \| Director Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options outstanding	384,998		384,998
Stock options [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized compensation expense	3,730,874	4,170,399	3,730,874	4,170,399
Weighted average period for unrecognized compensation expense expected to be recognized			2 years 9 months 18 days	2 years 3 months 18 days
Recognized compensation expense	568,751	554,994	1,042,842	1,119,316
Outstanding Restricted Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized compensation expense		$ 4,228,020		$ 4,228,020
Weighted average period for unrecognized compensation expense expected to be recognized				3 years 3 months 18 days
Minimum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common stock reserved for issuance under stock holders incentive plan						2,000,000
Maximum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common stock reserved for issuance under stock holders incentive plan						4,000,000
Maximum [Member] \| Director Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares of common stock reserved for issuance							1,000,000