Stock-Based Compensation - Stock-Option Compensation Award with Market Conditions Valuation Assumptions (Details) - Performance options award	12 Months Ended
Dec. 31, 2019 $ / shares
Valuation assumptions
Exercise price (usd per share)	$ 2.36
Volatility (percent)	50.00%
Risk-free interest rate (percent)	2.38%
Maturity (in years)	10 years
Milestone 1 (usd per share)	$ 4.00
Milestone 2 (usd per share)	$ 5.00
Cost of equity (percent)	17.00%
Dividend yield (percent)	0.00%

Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Cost Of Equity

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- Definition

Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Maturity

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- Definition

Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Milestone One

+ References

No definition available.

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- Definition

Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Milestone Two

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- Definition

Agreed-upon price for the exchange of the underlying asset relating to the share-based payment award.

+ References

No definition available.

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- Definition

The estimated dividend rate (a percentage of the share price) to be paid (expected dividends) to holders of the underlying shares over the option's term.

+ 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)(iii)
-URI http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901

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- Definition

The estimated measure of the percentage by which a share price is expected to fluctuate during a period. Volatility also may be defined as a probability-weighted measure of the dispersion of returns about the mean. The volatility of a share price is the standard deviation of the continuously compounded rates of return on the share over a specified period. That is the same as the standard deviation of the differences in the natural logarithms of the stock prices plus dividends, if any, over the period.

+ 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)(ii)
-URI http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901

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- Definition

The risk-free interest rate assumption that is used in valuing an option on its own shares.

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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)(iv)
-URI http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901

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