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Summary of Significant Accounting Policies (Tables) | 6 Months Ended
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Jun. 30, 2025
Summary of Significant Accounting Policies |
Schedule of accounts receivable net | Accounts receivable, net consisted of the following (in thousands): ​
​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | June 30, | ​ | December 31,
​ | ​ | 2025 | ​ | 2024
Trade accounts receivable | ​ | $ | 7,749 | ​ | $ | 11,944
Unbilled accounts receivable | ​ | ​ | 69 | ​ | ​ | 187
Allowance for product returns and price adjustments | ​ | ​ | (448) | ​ | ​ | (409)
Accounts receivable, net | ​ | $ | 7,370 |  | $ | 11,722
​ | ​ | ​ | ​ | ​ | ​ | ​
Schedule of revenue and accounts receivable for each significant customer | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Revenue | ​ | Accounts Receivable |
​ | ​ | Three Months Ended June 30, | ​ | Six Months Ended June 30, | ​ | June 30, | ​ | December 31,
Customers |  | 2025 | ​ | 2024 | ​ | 2025 | ​ | 2024 |  | 2025 | ​ | 2024
Customer A |  | 14 | % | ​ | * | ​ | ​ | 16 | % | ​ | * | ​ | ​ | * | ​ | ​ | * | ​
Customer B | ​ | * | ​ | ​ | * | ​ | ​ | * | ​ | ​ | 12 | % | ​ | * | ​ | ​ | * | ​
Customer C | ​ | * | ​ | ​ | 26 | % | ​ | * | ​ | ​ | 25 | % | ​ | 15 | % | ​ | 61 | %
Customer D | ​ | 20 | % | ​ | 14 | % | ​ | 15 | % | ​ | * | ​ | ​ | 32 | % | ​ | * | ​
*Less than 10%
Schedule of fair value of financial assets and liabilities measured on recurring basis | ​ The following table sets forth the fair value of the Company’s financial assets and liabilities measured at fair value on a recurring basis (in thousands): ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | December 31, 2024
​ |  | Level 1 |  | Level 2 |  | Level 3 |  | Total
Assets: | ​ | ​ | ​ |  | ​ | ​ |  | ​ | ​ |  | ​ | ​
Money market funds | ​ | $ | 33,617 |  | $ | — |  | $ | — |  | $ | 33,617
Total assets measured at fair value | ​ | $ | 33,617 |  | $ | — |  | $ | — |  | $ | 33,617
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​

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- Definition Tabular disclosure of assets and liabilities, including [financial] instruments measured at fair value that are classified in stockholders' equity, if any, 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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