Stockholders Equity and StockBased Compensation (Details) - USD ($) $ in Millions |
3 Months Ended | |
|---|---|---|
Mar. 31, 2023 |
Mar. 31, 2022 |
|
| Stockholders Equity and StockBased Compensation | ||
| Research and development expenses | $ 0.0 | $ 0.0 |
| General and administrative expenses | 0.3 | 0.3 |
| Total stock-based compensation expense | $ 0.3 | $ 0.3 |
| X | ||||||||||
- Definition Amount of paid and unpaid stock dividends declared for award under share-based payment arrangement. No definition available.
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| X | ||||||||||
- References No definition available.
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| X | ||||||||||
- Definition Amount of general and administrative expense classified as other. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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| X | ||||||||||
- Definition Amount of other research and development expense. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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