Percentage decrease in expected term.

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- Definition

Percentage decrease in the stock price.

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- Definition

Percentage decrease in warrant liability with decrease in expected term.

+ References

No definition available.

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Percentage decrease in warrant liability with decrease in stock price.

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- Definition

Percentage increase in the expected term.

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Percentage increase in the stock price.

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- Definition

Percentage increase in warrant liability with increase in expected term.

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- Definition

Percentage increase in warrant liability with increase in stock price.

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- Definition

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.

+ References

No definition available.

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- Definition

Period the instrument, asset or liability is expected to be outstanding, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
-Paragraph 2
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Fair value of financial instrument classified as a liability measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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-Section 50
-Paragraph 2
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- Definition

Description of significant assumptions used by management to measure fair value.

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 825
-SubTopic 10
-Section 50
-Paragraph 10
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For each plan, identification of the award pricing model or other valuation method used in calculating the weighted average fair values disclosed. The model is also used to calculate the compensation expense that is shown within the balance sheet, income statement, and cash flow. Examples of valuation techniques are lattice models (binomial model), closed-form models (Black-Scholes-Merton formula), and a Monte Carlo simulation technique. Fair value is the amount at which an asset or liability could be bought or incurred or sold or settled in a current transaction between willing parties, that is, other than in a forced or liquidation sale. May include disclosures about the assumptions underlying application of the method selected.

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-SubTopic 10
-Section 50
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Fair Value Measurements - Summary of Unobservable Inputs into Fair Value Measurement for Accrued Warrant Liability (Detail) - Accrued Warrant Liability - USD ($)	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Fair Value	$ 78,637	$ 1,041,455	$ 949,419
Valuation Technique	Black-scholes pricing model
Unobservable Input	Expected term
Percentage increase in expected term	10.00%
Percentage increase in warrant liability with increase in expected term	6.00%
Percentage decrease in expected term	10.00%
Percentage decrease in warrant liability with decrease in expected term	6.00%
Percentage increase in stock price	10.00%
Percentage increase in warrant liability with increase in stock price	17.00%
Percentage decrease in stock price	10.00%
Percentage decrease in warrant liability with decrease in stock price	16.00%
Minimum
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Range in years	3 months
Maximum
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Range in years	3 years 7 months 5 days