XML 40 R25.htm IDEA: XBRL DOCUMENT
v3.23.3

Note 7 - Stockholders' Equity and Stock-based Compensation Expense (Tables) | 9 Months Ended
--- | ---
Sep. 30, 2023
Notes Tables |
Share-Based Payment Arrangement, Activity [Table Text Block] |
|  | Stock Options |  |  | Performance Awards |
Outstanding as of December 31, 2022 |  |  | 2,529,448 |  |  |  | 7,142 |
Options granted |  |  | 132,000 |  |  |  | — |
Options exercised |  |  | (495,299 | ) |  |  | — |
Options forfeited/canceled |  |  | (7,142 | ) |  |  | — |
Outstanding as of September 30, 2023 |  |  | 2,159,007 |  |  |  | 7,142 |
Share-Based Payment Arrangement, Expensed and Capitalized, Amount [Table Text Block] |
|  | Three months ended |  |  | Nine months ended |
|  | September 30, |  |  | September 30, |
|  | 2023 |  |  | 2022 |  |  | 2023 |  |  | 2022 |
Research and development |  | $ | 405 |  |  | $ | 399 |  |  | $ | 1,186 |  |  | $ | 1,234 |
General and administrative |  |  | 544 |  |  |  | 70 |  |  |  | 1,271 |  |  |  | 216 |
Total stock-based compensation expense |  | $ | 949 |  |  | $ | 469 |  |  | $ | 2,457 |  |  | $ | 1,450 |

X
- 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 + Details
Name: | us-gaap_ScheduleOfEmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsTextBlock
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of activity for award under share-based payment arrangement. Includes, but is not limited to, outstanding award at beginning and end of year, granted, exercised, forfeited, and weighted-average grant date fair value. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(2) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480429/718-10-50-2 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (d) -SubTopic 10 -Topic 718 -Publisher FASB -URI https://asc.fasb.org//1943274/2147480429/718-10-50-2 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (e) -SubTopic 10 -Topic 718 -Publisher FASB -URI https://asc.fasb.org//1943274/2147480429/718-10-50-2 + Details
Name: | us-gaap_ScheduleOfShareBasedCompensationActivityTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- References No definition available. + Details
Name: | us-gaap_TableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration