Stock-Based Compensation - Narratives (Details) $ / shares in Units, $ in Thousands	3 Months Ended
Mar. 31, 2022 USD ($) item $ / shares shares
Stock-Based Compensation
Number of equity incentive plans \| item	2
Aggregate intrinsic value of outstanding options	$ 2,400
Aggregate intrinsic value of exercisable options	$ 2,400
Stock Options
Stock-Based Compensation
Weighted average grant date fair value, Options (per share) \| $ / shares	$ 7.38
Inducement grants \| shares	207,800
Aggregate intrinsic value of exercisable options	$ 7
Unrecognized compensation expense	$ 6,100
Weighted average period for recognition of unrecognized expenses	2 years 7 months 6 days
Restricted stock units
Stock-Based Compensation
Vesting period	4 years
Weighted average grant date fair value, Equity Instruments (per share) \| $ / shares	$ 11.81
Aggregate intrinsic value	$ 3,400
Unrecognized compensation expense	$ 3,200
Weighted average period for recognition of unrecognized expenses	3 years 6 months
2019 Equity Incentive Plan
Stock-Based Compensation
Shares available for future issuance \| shares	1,025,115
Potential Common Shares Added Annually To Equity Plan Evergreen Option \| shares	432,442
Potential Common Shares Added Annually To Equity Plan Evergreen Option, Percentage Of Shares Outstanding Last Day Of Fiscal Year	4.00%
2019 Equity Incentive Plan \| Stock Options
Stock-Based Compensation
Vesting period	4 years
Vesting term	10 years

Represents about number of equity incentive plans.

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Potential Common Shares Added Annually To Equity Plan Evergreen Option

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Potential Common Shares Added Annually To Equity Plan Evergreen Option, Percentage Of Shares Outstanding Last Day Of Fiscal Year

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- Definition

Number of inducement share options (or share units) granted during the period.

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Aggregate number of common shares reserved for future issuance.

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
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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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Amount of cost not yet recognized for nonvested award under share-based payment arrangement.

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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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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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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

Amount of accumulated difference between fair value of underlying shares on dates of exercise and exercise price on options exercised (or share units converted) into shares.

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The weighted average grant-date fair value of options granted during the reporting period as calculated by applying the disclosed option pricing methodology.

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Amount by which the current fair value of the underlying stock exceeds the exercise price of options outstanding.

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Description of terms of award under share-based payment arrangement.

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Intrinsic value of outstanding award under share-based payment arrangement. Excludes share and unit options.

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Amount of difference between fair value of the underlying shares reserved for issuance and exercise price of vested portions of options outstanding and currently exercisable.

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