XML 26 R16.htm IDEA: XBRL DOCUMENT
v3.25.2

Note 9 - Intangible Assets, Net | 6 Months Ended
--- | ---
Jun. 30, 2025
Notes to Financial Statements |
Intangible Assets Disclosure [Text Block] | Note 9. Intangible Assets, net ​ Intangible assets consisted of the following for the periods indicated (in thousands): ​
|  | June 30, 2025 |
​ |  | Gross |  |  | Accumulated |  |  | Intangible |
​ |  | Amount |  |  | amortization |  |  | assets, net |
Patents |  | $ | 10,113 |  |  | $ | (6,632 | ) |  | $ | 3,481 |
Trademarks |  |  | 228 |  |  |  | (70 | ) |  |  | 158 |
Total intangible assets |  | $ | 10,341 |  |  | $ | (6,702 | ) |  | $ | 3,639 |
|  | December 31, 2024 |
​ |  | Gross |  |  | Accumulated |  |  | Intangible |
​ |  | Amount |  |  | amortization |  |  | assets, net |
Patents |  | $ | 9,873 |  |  | $ | (6,355 | ) |  | $ | 3,518 |
Trademarks |  |  | 218 |  |  |  | (56 | ) |  |  | 162 |
Total intangible assets |  | $ | 10,091 |  |  | $ | (6,411 | ) |  | $ | 3,680 |
​ For the three months ended June 30, 2025 and 2024, amortization expense for intangible assets, included in general and administrative expenses on the statement of operations, was $0.2 million and $0.1 million, respectively. For the six months ended June 30, 2025 and 2024, amortization expense for intangible assets, included in general and administrative expenses on the statement of operations, was $0.3 million and $0.2 million, respectively. The remaining weighted average amortization period for intangible assets is approximately 8.3 years. On June 30, 2025, future amortization expenses for intangible assets for future periods are estimated to be (in thousands):
2025 (remaining 6 months) |  | $ | 220 |
2026 |  |  | 435 |
2027 |  |  | 435 |
2028 |  |  | 435 |
2029 |  |  | 435 |
2030 and thereafter |  |  | 1,679 |
|  | $ | 3,639 |

X
- References No definition available. + Details
Name: | us-gaap_DisclosureTextBlockAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition The entire disclosure for all or part of the information related to intangible assets. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 350 -SubTopic 30 -Name Accounting Standards Codification -Publisher FASB -URI https://asc.fasb.org/350-30/tableOfContent Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 350 -SubTopic 30 -Name Accounting Standards Codification -Section 50 -Paragraph 4 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482665/350-30-50-4 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 350 -SubTopic 30 -Name Accounting Standards Codification -Section 50 -Paragraph 3 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482665/350-30-50-3 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Topic 985 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Publisher FASB -URI https://asc.fasb.org/1943274/2147481283/985-20-50-2 Reference 5: http://www.xbrl.org/2003/role/disclosureRef -Topic 985 -SubTopic 20 -Name Accounting Standards Codification -Publisher FASB -URI https://asc.fasb.org/985-20/tableOfContent + Details
Name: | us-gaap_IntangibleAssetsDisclosureTextBlock
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration