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Note 2 - Summary of Significant Accounting Policies (Tables) | 12 Months Ended
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Dec. 31, 2023
Notes Tables |
Property, Plant and Equipment, Useful Lives [Table Text Block] |
Machinery and equipment (years) | 3 | - | 10
Computer equipment and software (years) | 3 | - | 7
Furniture and fixtures (years) | 5 | - | 10
Schedule of Earnings Per Share, Basic and Diluted [Table Text Block] |
|  | Year Ended December 31, |
(in thousands, except per share data) |  | 2023 |  |  | 2022 |
Net loss |  | $ | (3,415 | ) |  | $ | (9,516 | )
Weighted average shares outstanding - basic |  |  | 42,420 |  |  |  | 41,413 |
Dilutive effect of equity awards |  |  | - |  |  |  | - |
Weighted average shares outstanding - diluted |  |  | 42,420 |  |  |  | 41,413 |
Basic loss per share |  | $ | (0.08 | ) |  | $ | (0.23 | )
Diluted loss per share |  | $ | (0.08 | ) |  | $ | (0.23 | )
Shares excluded from diluted loss per share due to their anti-dilutive effect |  |  | 3,868 |  |  |  | 3,661 |

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- Definition Tabular disclosure of an entity's basic and diluted earnings per share calculations, including a reconciliation of numerators and denominators of the basic and diluted per-share computations for income from continuing operations. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 260 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482662/260-10-50-1 + Details
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