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Stockholders' Equity (Tables)

3 Months Ended

Mar. 31, 2019

Equity Incentive Plan [Member]

Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions [Table Text Block]

The following weighted-average assumptions were utilized in the calculation of the fair value of the stock options:

Expected life			5.89 years
Weighted average volatility			71	%
Forfeiture rate			20	%
Weighted average risk-free interest rate			2.55	%
Expected dividend rate			0	%

Employee Stock Option [Member]

Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions [Table Text Block]

The following weighted-average assumptions were utilized in the calculation of the fair value of the stock options:

Expected life			5.75 years
Weighted average volatility			71	%
Forfeiture rate			20	%
Weighted average risk-free interest rate			2.55	%
Expected dividend rate			0	%

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- Definition

Tabular disclosure of the significant assumptions used during the year to estimate the fair value of stock options, including, but not limited to: (a) expected term of share options and similar instruments, (b) expected volatility of the entity's shares, (c) expected dividends, (d) risk-free rate(s), and (e) discount for post-vesting restrictions.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (f)(2)
-URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5070-113901

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