Quarterly report pursuant to Section 13 or 15(d)

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Notes to Financial Statements
Accounting Policies
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Stock-Based Compensation - Schedule of Stock Option Activity (Details)

v3.19.1

Stock-Based Compensation - Schedule of Stock Option Activity (Details) - USD ($)	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Share-based Payment Arrangement [Abstract]
Number of Options, Outstanding beginning balance	499,439	246,564
Number of Options, Granted	30,000
Number of Options, Exercised
Number of Options, Forfeited/Canceled/Expired	(120,313)
Number of Options, Outstanding ending balance	409,126	246,564
Number of Options, Exercisable	330,959	166,564
Weighted Average Exercise Price, Outstanding	$ 6.94	$ 11.17
Weighted Average Exercise Price, Granted	2.23
Weighted Average Exercise Price, Exercised
Weighted Average Exercise Price, Forfeited/Canceled/Expired	2.88
Weighted Average Exercise Price, Outstanding	7.78	11.17
Weighted Average Exercise Price, Exercisable	$ 9.01	$ 11.39
Weighted Average Remaining Contractual Life (in Years), Outstanding beginning	9 years	9 years 1 month 6 days
Weighted Average Remaining Contractual Life (in Years), Outstanding ending balance	8 years 4 months 24 days	8 years 10 months 25 days
Weighted Average Remaining Contractual Life (in Years), Exercisable	8 years 2 months 12 days	8 years 9 months 18 days
Average Intrinsic Value, Outstanding beginning balance
Average Intrinsic Value, Outstanding ending balance	80,520
Average Intrinsic Value, Exercisable ending balance	$ 32,710

- Definition

Weighted Average Remaining Contractual Life (in Years), Outstanding ending balance.

+ References

No definition available.

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- Definition

The number of shares into which fully or partially vested stock options outstanding as of the balance sheet date can be currently converted under the option plan.

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- Definition

The weighted-average price as of the balance sheet date at which grantees can acquire the shares reserved for issuance on vested portions of options outstanding and currently exercisable under the stock option plan.

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- Definition

For presentations that combine terminations, the number of shares under options that were cancelled during the reporting period as a result of occurrence of a terminating event specified in contractual agreements pertaining to the stock option plan or that expired.

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- Definition

Weighted average price of options that were either forfeited or expired.

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- Definition

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

+ References

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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 price at which option holders acquired shares when converting their stock options into shares.

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- Definition

Weighted average per share amount at which grantees can acquire shares of common stock by exercise of options.

+ References

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- Definition

Amount of difference between fair value of the underlying shares reserved for issuance and exercise price of vested portions of options outstanding and currently exercisable.

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- Definition

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

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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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- Definition

Number of share options (or share units) exercised during the current period.

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