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.

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

The weighted average fair value at grant date for nonvested equity-based awards issued during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

+ References

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The number of non-vested equity-based payment instruments, excluding stock (or unit) options, that validly exist and are outstanding as of the balance sheet date.

+ References

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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No definition available.

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Net number of non-option equity instruments granted to participants.

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- Definition

Number of shares related to Restricted Stock Award forfeited during the period.

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Number of shares issued during the period related to Restricted Stock Awards, net of any shares forfeited.

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Stockholders' Equity - Additional Information - Restricted Stock Units (Detail) - USD ($)	1 Months Ended	12 Months Ended
	Apr. 30, 2014	Dec. 31, 2015	Dec. 31, 2014
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Stock-based compensation expense		$ 1,315,530	$ 1,085,217
Shares issued for vested restricted stock units, Shares		56,500
Restricted Stock Units [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Fair value of restricted stock unit		$ 3.75
Stock-based compensation expense		$ 0
Restricted stock award, forfeitures		76,100
Outstanding restricted stock unit		0	132,600
Restricted Stock Units [Member] \| Contingent Warrants [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Stock-based compensation expense			$ 211,875
2012 Incentive Compensation Plan [Member] \| Restricted Stock Units [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Shares granted	132,600