Note 8 - Notes Payable and Convertible Notes Payable - Interest Expense (Details) - USD ($) $ in Thousands |
3 Months Ended | 6 Months Ended | ||
|---|---|---|---|---|
Jun. 30, 2026 |
Jun. 30, 2025 |
Jun. 30, 2026 |
Jun. 30, 2025 |
|
| Total interest expense on notes payable | $ 695 | $ 679 | $ 1,486 | $ 1,287 |
| Notes Payable [Member] | ||||
| Coupon interest | 152 | 131 | 302 | 258 |
| Amortization of debt discount and issuance costs | 78 | 88 | 184 | 171 |
| Total interest expense on notes payable | 230 | 219 | 486 | 429 |
| Convertible Notes Payable [Member] | ||||
| Coupon interest | 320 | 296 | 658 | 540 |
| Amortization of debt discount and issuance costs | 145 | 164 | 342 | 318 |
| Total interest expense on notes payable | $ 465 | $ 460 | $ 1,000 | $ 858 |
| 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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