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Significant Customers, Concentrations of Credit Risk and Geographic Information (Tables) | 12 Months Ended
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Dec. 31, 2025
Significant Customers, Concentrations of Credit Risk and Geographic Information |
Schedule of revenues from customers | ​
​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Year Ended December 31, | ​
​ | ​ ​ ​ | 2025 | ​ ​ ​ | 2024 | ​
Customer A |  | 18 | % | 15 | %
Customer B |  | * | % | 12 | %
* less than 10% of total revenue
Schedule of revenues by geographic area | ​
​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Year Ended December 31,
​ | ​ ​ ​ | 2025 | ​ ​ ​ | 2024
​ |  | (in thousands)
United States | ​ | $ | 4,998 | ​ | $ | 5,160
Asia and Middle East | ​ |  | 1,975 | ​ |  | 2,623
Europe and other | ​ |  | 4,917 | ​ |  | 3,896
Revenue | ​ | $ | 11,890 | ​ | $ | 11,679
Schedule of long-lived assets by geographic area | ​
​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ ​ ​ | December 31, | ​ ​ ​ | December 31,
​ |  | 2025 |  | 2024
​ |  | (in thousands)
United States | ​ | $ | 1,122 | ​ | $ | 1,440
Europe | ​ | ​ | 3,973 | ​ | ​ | 4,446
Asia | ​ |  | 340 | ​ |  | 331
Total long-lived assets | ​ | $ | 5,435 | ​ | $ | 6,217
​

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- Definition Tabular disclosure of long-lived assets, excluding financial instruments, long-term customer relationships of a financial institution, mortgage rights, deferred policy acquisition costs, and deferred tax assets, by geographic areas located in the entity's country of domicile and foreign countries in which the entity holds assets. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 280 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 41 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482810/280-10-50-41 + Details
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- Definition Tabular disclosure of revenue from external customers by geographic areas attributed to the entity's country of domicile and to foreign countries from which the entity derives revenue. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 280 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 41 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482810/280-10-50-41 + Details
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- Definition Tabular disclosure of the nature of a concentration, a benchmark to which it is compared, and the percentage that the risk is to the benchmark. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 275 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 18 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482861/275-10-50-18 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 275 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 20 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482861/275-10-50-20 + Details
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