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Note 4 - Fair-value Measurements (Tables) | 6 Months Ended
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Jun. 30, 2025
Notes Tables |
Fair Value, Assets Measured on Recurring Basis [Table Text Block] |
|  | June 30, 2025 |
|  | Level 1 |  |  | Level 3 |  |  | Total |
|  | (In thousands) |
Assets: |  |  |  |  |  |  |  |  |  |  |  |
Cash and cash equivalents: |  |  |  |  |  |  |  |  |  |  |  |
Certificate of deposit classified as non-current restricted investments |  | $ | 1,054 |  |  | $ | — |  |  | $ | 1,054 |
Short-term investment: |  |  |  |  |  |  |  |  |  |  |  |
Money-market funds |  |  | 26,840 |  |  |  | — |  |  |  | 26,840 |
Total Assets |  | $ | 27,894 |  |  | $ | — |  |  | $ | 27,894 |
Liabilities: |  |  |  |  |  |  |  |  |  |  |  |
Share-settled liability |  | $ | — |  |  | $ | (7,627 | ) |  | $ | (7,627 | )
Term Loan |  |  |  |  |  |  |  |  |  |  |  |
Call and put options derivative (1) |  |  | — |  |  |  | 113 |  |  |  | 113 |
2029 Notes: |  |  |  |  |  |  |  |  |  |  |  |
2029 Notes conversion option derivative |  |  | — |  |  |  | (15,020 | ) |  |  | (15,020 | )
Total Liabilities |  | $ | — |  |  | $ | (22,534 | ) |  | $ | (22,534 | )
|  | December 31, 2024 |
|  | Level 1 |  |  | Level 3 |  |  | Total |
|  | (In thousands) |
Assets: |  |  |  |  |  |  |  |  |  |  |  |
Cash and cash equivalents: |  |  |  |  |  |  |  |  |  |  |  |
Certificate of deposit classified as non-current restricted investments |  | $ | 1,054 |  |  | $ | — |  |  | $ | 1,054 |
Short-term investment: |  |  |  |  |  |  |  |  |  |  |  |
Money-market funds |  |  | 86,732 |  |  |  | — |  |  |  | 86,732 |
Total Assets |  | $ | 87,786 |  |  | $ | — |  |  | $ | 87,786 |
Liabilities: |  |  |  |  |  |  |  |  |  |  |  |
Term Loan |  |  |  |  |  |  |  |  |  |  |  |
Call and put options derivative (1) |  | $ | — |  |  | $ | 235 |  |  | $ | 235 |
Total Liabilities |  | $ | — |  |  | $ | 235 |  |  | $ | 235 |
Fair Value Measurement Inputs and Valuation Techniques [Table Text Block] |
|  | June 30, |  |  | December 31, |
|  | 2025 |  |  | 2024 |
Term Loan derivative |  |  |  |  |  |  |  |
Interest comprised of: |  |  |  |  |  |  |  |
SOFR benchmark rate |  |  | 3.04 - 4.08 | % |  |  | 3.91 - 4.30 | %
Securitized discount rate |  |  | 11.80 | % |  |  | 13.16 | %
Yield volatility |  |  | 26 | % |  |  | 21 | %
Probability weighted term (in years) |  |  | 1.9 |  |  |  | 3.4 |
|  | June 30, |
|  | 2025 |
2029 Notes conversion option derivative |  |  |  |
Stock price (per share) |  | $ | 3.00 |
Unsecuritized discount rate |  |  | 18.88 | %
Risk-free rate |  |  | 3.66 | %
Stock price volatility |  |  | 70 | %
Dividend yield |  |  | — | %
Term (in years) |  |  | 4.0 |
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Table Text Block] |
|  | Balance as of |  |  |  |  |  |  |  |  |  |  | Balance as of |
|  | December 31, |  |  |  |  |  |  |  |  |  |  | June 30, |
|  | 2024 |  |  | Additions |  |  | Change in Fair Value |  |  | 2025 |
|  | (In thousands) |
Liabilities: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-settled liability |  | $ | — |  |  | $ | (7,627 | ) |  | $ | — |  |  | $ | (7,627 | )
Term Loan |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Call and put options derivative |  |  | 235 |  |  |  | - |  |  |  | (122 | ) |  |  | 113 |
2029 Notes: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
2029 Notes conversion option derivative |  |  | — |  |  |  | (15,020 | ) |  |  | — |  |  |  | (15,020 | )
Total Liabilities |  | $ | 235 |  |  | $ | (22,647 | ) |  | $ | (122 | ) |  | $ | (22,534 | )

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- Definition Tabular disclosure of input and valuation technique used to measure fair value and change in valuation approach and technique for each separate class of asset and liability measured on recurring and nonrecurring basis. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (bbb)(1) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482106/820-10-50-2 Reference 2: http://www.xbrl.org/2003/role/exampleRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 55 -Paragraph 103 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482078/820-10-55-103 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (bbb)(2) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482106/820-10-50-2 + Details
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- Definition Tabular disclosure of assets, including [financial] instruments measured at fair value that are classified in stockholders' equity, if any, by class that are measured at fair value on a recurring basis. The disclosures contemplated herein include the fair value measurements at the reporting date by the level within the fair value hierarchy in which the fair value measurements in their entirety fall, segregating fair value measurements using quoted prices in active markets for identical assets (Level 1), significant other observable inputs (Level 2), and significant unobservable inputs (Level 3). + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482106/820-10-50-2 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482106/820-10-50-2 + Details
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- Definition Tabular disclosure of the fair value measurement of liabilities using significant unobservable inputs (Level 3), a reconciliation of the beginning and ending balances, separately presenting changes attributable to the following: (1) total gains or losses for the period (realized and unrealized), segregating those gains or losses included in earnings (or changes in net assets), and gains or losses recognized in other comprehensive income (loss) and a description of where those gains or losses included in earnings (or changes in net assets) are reported in the statement of income (or activities); (2) purchases, sales, issues, and settlements (each type disclosed separately); and (3) transfers in and transfers out of Level 3 (for example, transfers due to changes in the observability of significant inputs) by class of liability. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 3 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482106/820-10-50-3 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (d) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482106/820-10-50-2 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (c) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482106/820-10-50-2 + Details
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