Closing price of common stock.

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Employee Service Share Based Compensation Unrecognized Compensation Costs Weighted Average Period Of Recognition

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Share-based Compensation Arrangement by Share-based Payment Award, Offering Period

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Aggregate number of common shares reserved for future issuance.

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

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

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The number of equity-based payment instruments, excluding stock (or unit) options, that vested during the reporting period.

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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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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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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 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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Maximum number of shares that may be issued in accordance with the plan as a proportion of outstanding capital stock.

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No definition available.

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

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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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Weighted average remaining contractual term for fully vested and expected to vest exercisable or convertible options, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Includes, but is not limited to, unvested options for which requisite service period has not been rendered but that are expected to vest based on achievement of performance condition, if forfeitures are recognized when they occur.

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

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Weighted average remaining contractual term of outstanding stock options, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Stock-Based Compensation - Narrative (Details) - USD ($) $ / shares in Units, $ in Millions			3 Months Ended
	Apr. 22, 2021	Sep. 10, 2019	Mar. 31, 2022	Mar. 31, 2021	Dec. 29, 2017
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares of common stock reserved for issuance (in shares)			2,797,000
Closing price of the Company's common stock (in dollars per share)			$ 6.68
Weighted average exercise price, granted (in dollars per share)			$ 4.79	$ 6.98
Averages contractual term			10 years
Expected dividend yield (as a percent)			0.00%	0.00%
Unrecognized compensation cost, options			$ 4.0
Operating expenses weighted average period			3 years 1 month 13 days
RSUs
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Weighted average exercise price, granted (in dollars per share)			$ 5.34
Operating expenses weighted average period			2 years 9 months 3 days
Unrecognized compensation cost			$ 1.0
RSUs vested (in shares)			0
Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Average vesting term			6 years
Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Average vesting term			4 years
2017 Equity Plan \| Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares of common stock authorized for issuance (in shares)					22,000
2019 Incentive Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares of common stock authorized for issuance (in shares)		1,964,000
Option term		4 years
Increase in number of shares available for future issuance under stock based awards (as a percent)		5.00%
Shares of common stock reserved for issuance (in shares)			672,000
2021 ESPP \| Employee Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares of common stock reserved for issuance (in shares)			289,638
Cash earnings contributed per year	20.00%
Purchase price of common stock	85.00%
Offering period	6 months
Share-based compensation arrangement by share-based payment award, shares purchased for award			10,362
2017 ESPP \| Employee Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares of common stock reserved for issuance (in shares)			14,302
Share-based compensation arrangement by share-based payment award, shares purchased for award			0