Stock-Based Compensation - Restricted stock units activity (Details) $ / shares in Units, $ in Millions	12 Months Ended
Dec. 31, 2021 USD ($) $ / shares shares
Average Grant Date Fair Value
Weighted average period for recognition of stock-based compensation expense	2 years 6 months
Restricted stock units
Number of shares
Unvested at beginning of period \| shares	0
Granted \| shares	197,669
Vested and released \| shares	(174)
Forfeited \| shares	(9,731)
Unvested at end of period \| shares	187,764
Average Grant Date Fair Value
Unvested at beginning of period \| $ / shares	$ 0
Granted \| $ / shares	36.43
Vested and released \| $ / shares	57.47
Forfeited \| $ / shares	46.78
Unvested at end of period \| $ / shares	$ 35.87
Unrecognized compensation expense \| $	$ 5.2
Weighted average period for recognition of stock-based compensation expense	3 years 3 months 18 days
Fair value of restricted stock units vested \| $	$ 0.1

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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- Definition

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

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Weighted average fair value as of the grant date of equity-based award plans other than stock (unit) option plans that were not exercised or put into effect as a result of the occurrence of a terminating event.

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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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Per share or unit weighted-average fair value of nonvested award under share-based payment arrangement. Excludes share and unit options.

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A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

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The weighted average fair value as of grant date pertaining to an equity-based award plan other than a stock (or unit) option plan for which the grantee gained the right during the reporting period, by satisfying service and performance requirements, to receive or retain shares or units, other instruments, or cash in accordance with the terms of the arrangement.

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- Definition

Number of non-option equity instruments exercised by participants.

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Number of shares under non-option equity instrument agreements that were cancelled as a result of occurrence of a terminating event.

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Net number of non-option equity instruments granted to participants.

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Number of equity instruments other than options outstanding, including both vested and non-vested instruments.

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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-Topic 718
-SubTopic 10
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- Definition

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

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No definition available.

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