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Financial Instruments (Tables) | 12 Months Ended
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Dec. 31, 2023
Fair Value Disclosures [Abstract] |
Carrying Value and Estimated Fair Value of Financial Instruments | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | December 31, 2022 | ​ | December 31, 2023
​ | ​ | Carrying | ​ | Fair | ​ | Carrying | ​ | Fair
​ |  | amount |  | value |  | amount |  | value
​ | ​ | (In thousands)
Cash and cash equivalents | ​ | $ | 26,748 | ​ | $ | 26,748 | ​ | $ | 41,393 | ​ | $ | 41,393
Accounts receivable, net | ​ |  | 17,840 | ​ |  | 17,840 | ​ |  | 17,061 | ​ |  | 17,061
Accounts payable | ​ |  | 3,537 | ​ |  | 3,537 | ​ |  | 3,148 | ​ |  | 3,148

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- Definition Tabular disclosure of the fair value of financial instruments, including financial assets and financial liabilities, and the measurements of those instruments, assets, and liabilities. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482106/820-10-50-2 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 11 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482907/825-10-50-11 + Details
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