Percentage of increase in shares reserved for issuance.

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Share based compensation arrangement by share based payment award increase in shares amount.

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Share based compensation arrangement by share based payment award offering period.

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Share-based compensation arrangement by share-based payment award, options, grant date fair value.

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- Definition

Share based compensation arrangement by share based payment award purchase period.

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- Definition

Amount of expense for award under share-based payment arrangement. Excludes amount capitalized.

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Aggregate carrying value as of the balance sheet date of the liabilities for stock option plans and other equity-based compensation arrangements.

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No definition available.

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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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Amount of cost to be recognized for option under share-based payment arrangement.

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- Definition

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 number of non-vested equity-based payment instruments, excluding stock (or unit) options, that validly exist and are outstanding as of the balance sheet date.

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- Definition

The estimated amount of dividends to be paid to holders of the underlying shares (expected dividends) over the option's term. Dividends are taken into account because payment of dividends to shareholders reduces the fair value of the underlying shares, and option holders generally do not receive dividends.

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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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- Definition

The highest percentage of annual salary that an employee is permitted to utilize with respect to the plan.

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- Definition

Number of shares authorized for issuance under share-based payment arrangement.

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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

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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- Definition

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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- Definition

Per share weighted-average price paid for shares purchased on open market for issuance under share-based payment arrangement.

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- Definition

Number of shares purchased for issuance under share-based payment arrangement.

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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

Fair value of options vested. Excludes equity instruments other than options, for example, but not limited to, share units, stock appreciation rights, restricted stock.

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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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Stock-Based Compensation - Additional Information (Details) - USD ($) $ / shares in Units, $ in Thousands	1 Months Ended	12 Months Ended
	Oct. 31, 2019	Dec. 31, 2021	Dec. 31, 2020	Jan. 01, 2021
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Stock-based compensation expense		$ 9,952	$ 8,686
Weighted-average grant-date fair value per share		$ 15.04	$ 24.57
Stock options grant date fair value		$ 11,900	$ 8,700
Number of stock options, exercises intrinsic value		2,400	2,400
Stock option vested aggregate fair value		6,800	5,400
Expected dividend yield		0
Unrecognized stock-based compensation cost related to outstanding unvested stock options and RSUs that are expected to vest		$ 15,700
Unrecognized stock-based compensation cost, expected period to be recognized		2 years 7 months 6 days
2019 ESPP
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Percentage of increase in shares reserved for issuance on common stock outstanding	1.00%
Total shares reserved	240,336			240,336
Increase in shares at the beginning of each calendar year	240,336
Maximum employee subscription rate on salary	15.00%
Offering period	24 months
Purchase period	6 months
Purchase price of common stock as percentage of fair market value	85.00%
Stock-based compensation expense		$ 2,500	$ 2,700
Share-based compensation, employee purchased shares		76,424	87,325
Share-based compensation, shares at weighted average exercise price		$ 10.80	$ 10.27
Option Plans
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Common stock available for grant		2,688,372
Option Plans \| Employees, Officers, Directors, Advisors, and Consultants
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Award vesting period		4 years
Option Plans \| Maximum \| Employees, Officers, Directors, Advisors, and Consultants
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Options granted, expiration period		10 years
2019 Stock Plan
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Percentage of increase in shares reserved for issuance on common stock outstanding		4.00%
2015 Stock Plan
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Award vesting period		48 months
Shares not vested and subject to repurchase		0	3,000
Cash received from early exercise of unvested options		$ 0	$ 6,000