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Redeemable Convertible Preferred Stock (Tables)

12 Months Ended

Dec. 31, 2018

Preferred Stock and Warrants

Temporary Equity [Line Items]

Warrants Calculated Using the Black Scholes Merton Pricing Model

The preferred stock and warrants were issued for a total of $5.0 million. This amount was allocated to the preferred stock and warrants based on their relative fair values. The fair value of the warrants was calculated using the Black Scholes-Merton pricing model using the following weighted average assumptions, at the grant date:

Number of warrants		325,000
Exercise price	$	6.62
Expected volatility of underlying stock		74	%
Risk-free interest rate		1.62	%
Dividend yield		0	%
Expected life of warrants		8 years
Weighted-average fair value of warrants	$	3.11
Expiration date		May 2, 2020

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- Definition

Tabular disclosure of input and valuation technique used to measure fair value and change in valuation approach and technique for each separate class of asset and liability measured on recurring and nonrecurring basis.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (bbb)
-URI http://asc.fasb.org/extlink&oid=99377789&loc=d3e19207-110258

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- Definition

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+ References

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