The number of shares which are reserved for issuance.

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The fair market value of nonvested equity-based awards on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan) as of grant date.

+ References

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- Definition

Share-Based Compensation Arrangement By Share-Based Payment Award, Number Of Offering Periods

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Share-Based Compensation Arrangement By Share-Based Payment Award, Stock Plan Offering Period

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Weighted-average period over which cost not yet recognized is expected to be recognized for award under share-based payment arrangement, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

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- Definition

Amount of cost to be recognized for nonvested award under share-based payment arrangement. Excludes share and unit options.

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- Definition

Estimated period over which an employee is required to provide service in exchange for the equity-based payment award, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Period over which grantee's right to exercise award under share-based payment arrangement is no longer contingent on satisfaction of service or performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. Includes, but is not limited to, combination of market, performance or service condition.

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- Definition

The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

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The weighted average fair value at grant date for nonvested equity-based awards issued during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

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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.

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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

The difference between the maximum number of shares (or other type of equity) authorized for issuance under the plan (including the effects of amendments and adjustments), and the sum of: 1) the number of shares (or other type of equity) already issued upon exercise of options or other equity-based awards under the plan; and 2) shares (or other type of equity) reserved for issuance on granting of outstanding awards, net of cancellations and forfeitures, if applicable.

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- Definition

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

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- Definition

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

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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

Period from grant date that an equity-based award expires, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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- Definition

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

Purchase price of common stock expressed as a percentage of its fair value.

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No definition available.

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- Definition

Number of shares issued during the period as a result of an employee stock purchase plan.

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Share-Based Compensation - Narrative (Details) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2022 USD ($) offeringPeriod $ / shares shares	Dec. 31, 2021 $ / shares shares	Dec. 31, 2020	Dec. 30, 2022 $ / shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares available for grant (in shares) \| shares	400,000
Granted (in dollars per share) \| $ / shares	$ 1.83	$ 4.73
Share price (in dollars per share) \| $ / shares				$ 0.90
Weighted average remaining contract life	7 years 6 months	7 years 10 months 17 days	8 years 5 months 1 day
Granted (in shares) \| shares	2,015,000	1,212,000
Common Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares issued under employee stock purchase plan (in shares) \| shares	45,304	40,146
Restricted Stock Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted (in shares) \| shares	192,000	0
Grant date fair value \| $	$ 26
Unrecognized compensation costs \| $	$ 261
Vesting period	2 years 2 months 15 days
Granted (in dollars per share) \| $ / shares	$ 2.37	$ 0
Restricted Stock Units \| Key Employees
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period	3 years
Stock Options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period	3 years
Unrecognized compensation costs \| $	$ 3,433
Granted (in dollars per share) \| $ / shares	$ 1.46	$ 3.61
Expected dividend yield	0.00%	0.00%
Weighted average recognition period	1 year 10 months 2 days
Term of award	10 years
Stock Options \| Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted (in dollars per share) \| $ / shares	$ 0.71	$ 3.76
Stock Options \| Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted (in dollars per share) \| $ / shares	$ 2.55	$ 5.30
Stock Options \| Key Employees
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period	3 years
Stock Options \| Director
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period	1 year
Stock Options \| Officer \| Common Stock \| 2022 Equity Inducement Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted (in shares) \| shares	100,000
Employee Stock Purchase Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of yearly offering periods \| offeringPeriod	2
Offering period term	6 months
Employee stock purchase plan, purchase price percentage	85.00%
Number of shares reserved for issuance (in shares) \| shares	250,000