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

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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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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 shares used to settle grantee's tax withholding obligation for award under share-based payment arrangement.

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

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Stock-Based Compensation - Narrative (Details) - USD ($) $ / shares in Units, $ in Thousands	1 Months Ended	3 Months Ended		75 Months Ended
	Apr. 30, 2021	Mar. 31, 2021	Mar. 31, 2020	Mar. 31, 2021
Stock-Based Compensation
Shares issued under the Employee Stock Purchase Plan (in shares)		$ 249	$ 224
Fair value of restricted stock units withheld for payment of taxes		$ 1,501	$ 163
Employee stock
Stock-Based Compensation
Common stock available for issuance (in shares)		1,000,000		1,000,000
Common stock granted since inception (in shares)				720,228
Employee stock \| Subsequent event
Stock-Based Compensation
Shares purchased during period (in shares)	11,776
Shares issued under the Employee Stock Purchase Plan (in shares)	$ 300
Service-based stock options
Stock-Based Compensation
Expiration period		10 years
Vesting period		4 years
Granted (in shares)		1,337,955	1,186,140
Weighted average grant-date fair value (in dollars per share)		$ 32.02	$ 8.64
Service-based stock options \| Nonemployee directors
Stock-Based Compensation
Expiration period		10 years
Vesting period		1 year
Restricted Stock Units (RSUs)
Stock-Based Compensation
Vesting period		4 years
Restricted stock units granted (shares)		214,113	186,136
Weighted-average grant date fair value (in usd per share)		$ 50.81	$ 11.24
Grant-date fair value of restricted stock units granted		$ 10,900	$ 2,100
Shares vested in period (shares)		47,857	22,340
Restricted stock withheld for employee tax remittance (in shares)		28,240	13,872
Fair value of vested restricted stock awards		$ 4,100	$ 400
Fair value of restricted stock units withheld for payment of taxes		$ 1,500	$ 200
Restricted Stock Units (RSUs) \| Nonemployee directors
Stock-Based Compensation
Vesting period		1 year
Common Stock
Stock-Based Compensation
Shares purchased during period (in shares)		14,000	20,000
Shares issued under the Employee Stock Purchase Plan (in shares)		$ 249	$ 224
Restricted stock withheld for employee tax remittance (in shares)		28,000	14,000
Fair value of restricted stock units withheld for payment of taxes		$ 1,501	$ 163
Prior Plans
Stock-Based Compensation
Awards available for future grant under the Plan (in shares)		0		0
Omnibus Incentive Plan 2019
Stock-Based Compensation
Awards available for future grant under the Plan (in shares)		2,942,648		2,942,648