Stockholder's Equity - Schedule of 2017 Stock Options Valuation Assumptions (Details) - Employee Stock Option - $ / shares	12 Months Ended
Dec. 31, 2021	Dec. 31, 2020
2017 Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Dividend yield	0.00%	0.00%
2017 Plan \| Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Market value of stock on measurement date	$ 8.20	$ 8.79
Risk-free interest rate	0.50%	0.33%
Volatility factor	76.00%	91.00%
Term (years)	5 years 6 months	5 years 6 months
2017 Plan \| Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Market value of stock on measurement date	$ 24.75	$ 13.60
Risk-free interest rate	1.30%	1.68%
Volatility factor	89.00%	101.00%
Term (years)	6 years 3 months	6 years 3 months
Inducement Equity Incentive Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Market value of stock on measurement date	$ 16.41
Risk-free interest rate	0.84%
Dividend yield	0.00%
Volatility factor	76.26%
Term (years)	6 years 3 months

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.

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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

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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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- 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

Price of a single share of a number of saleable stocks of a company.

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No definition available.

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- Definition

Expected term of award under share-based payment arrangement, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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-Name Accounting Standards Codification
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