Stock-Based Compensation - Summary of Stock Option Activity (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended	12 Months Ended
Mar. 31, 2022	Dec. 31, 2021
Number of Share Units
Share Units, Outstanding as of December 31,2021	804
Share Units, Granted	263
Share Units, Vested and delivered	0
Share Units, Forfeited	0
Share Units, Outstanding as of March 31, 2022	1,067	804
Share Units, Exercisable as of March 31, 2022	0
Weighted-Average Grant Date Fair Value
Weighted-Average Grant Date Fair Value, Outstanding as of December 31, 2021	$ 5.27
Weighted-Average Grant Date Fair Value, Granted	9.39
Weighted- Average Grant Date Fair Value, Vested and delivered	0
Weighted-Average Grant Date Fair Value, Forfeited	0
Weighted-Average Grant Date Fair Value, Outstanding as of March 31, 2022	$ 6.28	$ 5.27
Weighted-Average Contractual Term (in years)	8 years 8 months 23 days	8 years 6 months 29 days
Aggregate Intrinsic Value Outstanding, as of December 31, 2021	$ 5,754
Aggregate Intrinsic Value Outstanding, as of March 31, 2022	$ 4,634	$ 5,754

The number of shares into which fully or partially vested stock options outstanding as of the balance sheet date can be currently converted under the option plan.

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-Publisher FASB
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-SubTopic 10
-Section 50
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The number of shares under options that were cancelled during the reporting period as a result of occurrence of a terminating event specified in contractual agreements pertaining to the stock option plan.

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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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Amount by which the current fair value of the underlying stock exceeds the exercise price of options outstanding.

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Number of options outstanding, including both vested and non-vested 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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Weighted average grant-date fair value of non-vested options forfeited.

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

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Number of options vested.

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Weighted average grant-date fair value of options vested.

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