Stockholders Equity (Stock-based Compensation Expense) (Details) - USD ($) $ in Thousands |
3 Months Ended | 9 Months Ended | ||
|---|---|---|---|---|
Sep. 30, 2022 |
Sep. 30, 2021 |
Sep. 30, 2022 |
Sep. 30, 2021 |
|
| Share-based Compensation | $ 496 | $ 884 | $ 1,810 | $ 2,427 |
| General and administrative [Member] | ||||
| Share-based Compensation | 194 | 229 | 549 | 793 |
| Research and development [Member] | ||||
| Share-based Compensation | $ 302 | $ 655 | $ 1,261 | $ 1,634 |
| X | ||||||||||
- Definition Amount of noncash expense for share-based payment arrangement. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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| X | ||||||||||
- Details
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| X | ||||||||||
- Details
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