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Note 5 - Accrued Expenses | 12 Months Ended
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Dec. 31, 2021
Notes to Financial Statements |
Accounts Payable and Accrued Liabilities Disclosure [Text Block] | 5. Accrued Expenses Accrued expenses consist of the following as of December 31, 2021, and 2020 (in thousands):
|  | 2021 |  |  | 2020 |
Accrued compensation and related expenses |  | $ | 480 |  |  | $ | 443 |
Accrued professional fees |  |  | 163 |  |  |  | 174 |
Accrued clinical trial expenses |  |  | 618 |  |  |  | 497 |
Other |  |  | 113 |  |  |  | 237 |
|  | $ | 1,374 |  |  | $ | 1,351 |

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- Definition The entire disclosure for accounts payable and accrued liabilities at the end of the reporting period. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.19(a),20,24) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 + Details
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