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Stock-Based Compensation - Summary of Stock Option Activity (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	6 Months Ended	12 Months Ended
	Jun. 30, 2021	Dec. 31, 2020
Number of Share Units
Share Units, Outstanding as of December 31,2020	513
Share Units, Granted	291
Share Units, Exercised	0
Share Units, Forfeited	0
Share Units, Outstanding as of June 30, 2021	804	513
Share Units, Exercisable as of June 30, 2021	0
Weighted-Average Grant Date Fair Value
Weighted-Average Grant Date Fair Value, Outstanding as of December 31, 2020	$ 2.80
Weighted-Average Grant Date Fair Value, Granted	9.63
Weighted-Average Grant Date fair Value, Exercised	0
Weighted-Average Grant Date Fair Value, Forfeited	0
Weighted-Average Grant Date Fair Value, Outstanding as of June 30, 2020	5.27	$ 2.80
Weighted-Average Grant Date Fair Value, Exercisable as of June 30, 2021	$ 0
Weighted-Average Contractual Term (in years)	9 years 29 days	9 years 2 months 19 days
Aggregate Intrinsic Value Outstanding, as of December 31, 2020	$ 3,028
Aggregate Intrinsic Value Outstanding, as of June 30, 2020	$ 4,583	$ 3,028

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- Definition

Share based compensation arrangement by share based payment award options exercised in period gross.

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Share based compensation arrangement by share based payment award options exercised in period weighted average grant date fair value.

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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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The weighted-average price as of the balance sheet date at which grantees can acquire the shares reserved for issuance on vested portions of options outstanding and currently exercisable under the stock option plan.

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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 grant-date fair value of non-vested options outstanding.

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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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