Note 8 - Notes Payable and Convertible Notes Payable - Interest Expense (Details) - USD ($) $ in Thousands |
3 Months Ended | 9 Months Ended | ||
|---|---|---|---|---|
Sep. 30, 2026 |
Sep. 30, 2025 |
Sep. 30, 2026 |
Sep. 30, 2025 |
|
| Total interest expense on notes payable | $ 665 | $ 649 | $ 2,151 | $ 1,936 |
| Notes Payable [Member] | ||||
| Coupon interest | 155 | 137 | 457 | 395 |
| Amortization of debt discount and issuance costs | 63 | 88 | 247 | 259 |
| Total interest expense on notes payable | 218 | 225 | 704 | 654 |
| Convertible Notes Payable [Member] | ||||
| Coupon interest | 329 | 261 | 988 | 801 |
| Amortization of debt discount and issuance costs | 118 | 163 | 459 | 481 |
| Total interest expense on notes payable | $ 447 | $ 424 | $ 1,447 | $ 1,282 |
| X | ||||||||||
- Definition Amount of amortization expense attributable to debt discount (premium) and debt issuance costs. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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| X | ||||||||||
- Definition Amount of the cost of borrowed funds accounted for as interest expense for debt. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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| X | ||||||||||
- Definition Represents the portion of interest incurred in the period on debt arrangements that was charged against earnings, excluding amortization of debt discount (premium) and financing costs. 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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