Stock-Based Compensation - Additional Information (Details) - USD ($)	3 Months Ended	12 Months Ended
Mar. 31, 2019	Dec. 31, 2014
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Income tax benefits recognized	$ 0
Unrecognized share-based compensation cost	$ 3,155,694
Unrecognized share-based compensation cost expected to be recognized, period	4 years
Employees and Non-Employees
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Stock-based compensation expense related to options granted	$ 190,000
2014 Stock Plan
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Common stock reserved for issuance		2,973,736
Purchase price as percentage of fair value per share for stockholders owning more than 10% of shares		110.00%
Stock options, expiration period		10 years
Stock options, expiration period for stockholders owning greater than 10% of shares		5 years
2014 Stock Plan \| Minimum [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Purchase price as percentage of fair value per share		100.00%
Percentage of capital stock owned by individual to trigger increase in share price		10.00%

Percentage of capital stock owned by individual.

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- Definition

Share based compensation arrangement by share based payment award expiration period for specific stockholders.

+ References

No definition available.

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- Definition

Share-based compensation arrangement by share-based payment award, purchase price of common stock for specific stockholders owning ten percent or more of outstanding shares, percent.

+ References

No definition available.

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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

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- Definition

Aggregate number of common shares reserved for future issuance.

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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

Unrecognized cost of unvested options awarded to employees as compensation.

+ References

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- Definition

The total recognized tax benefit related to compensation cost for equity-based payment arrangements recognized in income during the period.

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-Name Accounting Standards Codification
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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.

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No definition available.

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- Definition

Period from grant date that an equity-based award expires, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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- Definition

Purchase price of common stock expressed as a percentage of its fair value.

+ References

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