Note 4 - Prepaid Expenses - Prepaid Expenses and Other Assets (Details) - USD ($) $ in Thousands |
Sep. 30, 2021 |
Dec. 31, 2020 |
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Prepaid research and development expenses | $ 843 | $ 622 |
Other prepaid expenses | 191 | 1,932 |
Prepaid Expense, Current, Total | $ 1,034 | $ 2,554 |
X | ||||||||||
- Definition Amount of consideration paid in advance for research and development that provides economic benefits within a future period of one year or the normal operating cycle, if longer. No definition available.
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X | ||||||||||
- Definition Amount of asset related to consideration paid in advance for other costs that provide economic benefits within a future period of one year or the normal operating cycle, if longer. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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X | ||||||||||
- Definition Amount of asset related to consideration paid in advance for costs that provide economic benefits within a future period of one year or the normal operating cycle, if longer. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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