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Stock-Based Compensation (Tables)

6 Months Ended

Jun. 30, 2023

Share-Based Payment Arrangement [Abstract]

Summary of compensation expense related to stock-based awards

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​	​	​	​	​	​	​	​	​	​	​	​
​	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

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​	​	​	​	​	​	​	​	​	​	​	​
​	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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- References

No definition available.

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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

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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

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