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v3.23.2

Stock-Based Compensation (Tables) | 6 Months Ended
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Jun. 30, 2023
Share-Based Payment Arrangement [Abstract] |
Summary of compensation expense related to stock-based awards | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | Three Months Ended June 30, | ​ | Six Months Ended June 30,
(in thousands) | 2023 |  | 2022 |  | 2023 |  | 2022
Research and development | $ | 2,213 | ​ | $ | 1,707 | ​ | $ | 4,060 | ​ | $ | 2,261
General and administrative |  | 5,112 | ​ |  | 3,840 | ​ |  | 9,727 | ​ |  | 6,472
Total stock-based compensation | $ | 7,325 | ​ | $ | 5,547 | ​ | $ | 13,787 | ​ | $ | 8,733
Summary of share-based compensation expense by award type | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | Three Months Ended June 30, | ​ | Six Months Ended June 30,
(in thousands) | 2023 | ​ | 2022 | ​ | 2023 | ​ | 2022
Restricted Stock Units ("RSUs") | $ | 2,723 | ​ | $ | 1,818 | ​ | $ | 4,684 | ​ | $ | 1,818
Earn-Out Restricted Shares | ​ | 2,166 | ​ | ​ | 1,972 | ​ | ​ | 4,301 | ​ | ​ | 3,565
Performance Stock Units ("PSUs") | ​ | 1,406 | ​ | ​ | 1,075 | ​ | ​ | 2,732 | ​ | ​ | 1,075
Restricted Stock Awards ("RSAs") | ​ | 926 | ​ | ​ | 568 | ​ | ​ | 1,856 | ​ | ​ | 2,046
Stock options | ​ | 104 | ​ | ​ | 114 | ​ | ​ | 214 | ​ | ​ | 229
Total | $ | 7,325 | ​ | $ | 5,547 | ​ | $ | 13,787 | ​ | $ | 8,733

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- Definition Tabular disclosure of cost recognized for award under share-based payment arrangement by plan. Includes, but is not limited to, related tax benefit. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (h)(1) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480429/718-10-50-2 + Details
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- Definition Tabular disclosure of allocation of amount expensed and capitalized for award under share-based payment arrangement to statement of income or comprehensive income and statement of financial position. Includes, but is not limited to, corresponding line item in financial statement. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (h)(1) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480429/718-10-50-2 + Details
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