Aggregate number of common shares reserved for future issuance.

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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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Period over which grantee's right to exercise award under share-based payment arrangement is no longer contingent on satisfaction of service or performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. Includes, but is not limited to, combination of market, performance or service condition.

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

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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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Number of fully vested and expected to vest options outstanding that can be converted into shares under option plan. Includes, but is not limited to, unvested options for which requisite service period has not been rendered but that are expected to vest based on achievement of performance condition, if forfeitures are recognized when they occur.

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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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Stock-Based Compensation - Narrative (Details) - USD ($) $ / shares in Units, $ in Thousands	6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Dec. 31, 2020
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares remain for future issuance (in shares)	2,537,090		4,094,770
Unrecognized stock compensation expense	$ 37,383
Unrecognized stock compensation expense attributable to RU's	32,597
Unrecognized stock compensation expense attributable to stock options	$ 4,786
Weighted average grant date fair value of options granted (in usd per share)	$ 9.08	$ 2.08
Stock options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options vesting term	5 years
Options expected to vest (in shares)	74,929
Stock options \| Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options vesting term	3 years
Options term	5 years
Stock options \| Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options vesting term	5 years
Options term	10 years
Stock options \| Weighted Average
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options vesting term	1 year 6 months
Restricted units \| Weighted Average
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options vesting term	2 years 8 months 12 days
2020 Incentive Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares authorized for issuance (in shares)	6,000,000
Number of additional shares authorized for issuance (in shares)	498,021