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Equity-based Compensation - Compensation expense (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2023 | Jun. 30, 2022 | Jun. 30, 2023 | Jun. 30, 2022
Equity-based Compensation |  |  |  |
Total equity-based compensation | $ 1,025 | $ 892 | $ 2,212 | $ 1,893
Total unrecognized compensation cost related to options | 6,347 |  | $ 6,347 |
Weighted average period over which the unrecognized compensation cost is expected to be recognized |  |  | 1 year 10 months 24 days |
Research and development |  |  |  |
Equity-based Compensation |  |  |  |
Total equity-based compensation | 156 | 82 | $ 313 | 316
General and administrative |  |  |  |
Equity-based Compensation |  |  |  |
Total equity-based compensation | $ 869 | $ 810 | $ 1,899 | $ 1,577

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- Definition Amount of expense for award under share-based payment arrangement. Excludes amount capitalized. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (h)(1)(i) -URI https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901 + Details
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- Definition Weighted-average period over which cost not yet recognized is expected to be recognized for award under share-based payment arrangement, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (i) -URI https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901 + Details
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