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- Definition

Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Rights, Threshold Share Price

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

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

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Amount of cost not yet recognized for nonvested award under share-based payment arrangement.

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

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

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Number of options outstanding, including both vested and non-vested options.

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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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An excess of the fair value of the modified award over the fair value of the award immediately before the modification.

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

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The number of shares reserved for issuance pertaining to the outstanding stock options as of the balance sheet date for all option plans in the customized range of exercise prices.

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Percentage of vesting of award 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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Number of non-vested options outstanding.

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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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Weighted average grant-date fair value of options vested.

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

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The weighted average price as of the balance sheet date at which grantees could acquire the underlying shares with respect to all outstanding stock options which are in the customized range of exercise prices.

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Equity Incentive Plans - Additional Information (Details) - USD ($) $ / shares in Units, $ in Thousands			3 Months Ended		6 Months Ended
	May 05, 2023	Feb. 06, 2019	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022	Dec. 31, 2022
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares outstanding awarded (in shares)			19,739,058		19,739,058		17,487,165
Options granted (in shares)	750,000				11,570,739
Options granted (in USD per share)	$ 1.36				$ 1.30
Share-based payment arrangement, expense	$ 2,000		$ 8,197	$ 9,999	$ 16,324	$ 20,982
Exercise price (in dollars per share)	$ 1.36
Share-based payment arrangement, option, exercise price range, shares outstanding	6,817,057
Share-based payment arrangement, plan modification, incremental cost	$ 3,400
Share-based payment arrangement, nonvested award, cost not yet recognized, amount	$ 1,400
Restricted Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Weighted-average period of cost expects to recognize (in years)					7 months 6 days
Unrecognized stock-based compensation expense			2,900		$ 2,900
Stock Options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expected dividend yield (as a percent)					0.00%
Award vesting rights, threshold consecutive days	30 days
Share-based payment arrangement, expense	$ 400
Weighted-average period of cost expects to recognize (in years)	2 years 2 months 12 days
Aggregate intrinsic value, options vested in period					$ 0	$ 300
Weighted-average grant date fair value (in dollars per share)					$ 5.41	$ 8.30
Aggregate fair value of stock options vested during period					$ 22,800	$ 18,400
Stock Options \| Tranche 1
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting rights, percentage	50.00%
Award vesting rights, threshold share price	$ 5.00
Stock Options \| Tranche 2
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting rights, percentage	25.00%
Award vesting rights, threshold share price	$ 7.50
Stock Options \| Tranche 3
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting rights, percentage	25.00%
Award vesting rights, threshold share price	$ 10.00
Stock-Based Compensation Expense
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Weighted-average period of cost expects to recognize (in years)					2 years 4 months 24 days
Unrecognized compensation expense			$ 32,100		$ 32,100
2019 Equity Incentive Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares reserved for future issuance (in shares)		5,750,000
Term of awards (in years)		10 years
Percentage of amount increase in outstanding shares		5.00%
Common stock available for issuance (in shares)			3,088,522		3,088,522
Shares outstanding awarded (in shares)			17,714,677		17,714,677		16,199,202
2019 Employee Stock Purchase Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares reserved for future issuance (in shares)		700,000
Term of awards (in years)		10 years
Percentage of amount increase in outstanding shares		1.00%
Common stock available for issuance (in shares)			3,146,016		3,146,016
Number of share issued under ESPP					249,623
2019 Employee Stock Purchase Plan \| Stock-Based Compensation Expense
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Weighted-average period of cost expects to recognize (in years)					8 months 12 days
Unrecognized compensation expense			$ 1,300		$ 1,300
2019 Employee Stock Purchase Plan \| Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Purchase of common stock through payroll deductions, percentage		20.00%
2017 Equity Incentive Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares outstanding awarded (in shares)			2,469,068		2,469,068		2,582,771
2017 Equity Incentive Plan \| Restricted Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock awards granted (in shares)			0		0