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Fair Value of Financial Assets and Liabilities (Tables) | 6 Months Ended
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Jun. 30, 2025
Fair Value of Financial Assets and Liabilities |
Schedule of assets and liabilities measured at fair value on a recurring and non-recurring basis | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | June 30, 2025
(In thousands) |  | Level 1 |  | Level 2 |  | Level 3 |  | Total
Assets: |  | ​ |  |  | ​ |  |  | ​ |  |  | ​ |
Cash equivalents | ​ | $ | 21,831 | ​ | $ | — | ​ | $ | — | ​ | $ | 21,831
Marketable securities | ​ |  | — | ​ | ​ | 155,488 | ​ | ​ | — | ​ | ​ | 155,488
Total assets | ​ | $ | 21,831 | ​ | $ | 155,488 | ​ | $ | — | ​ | $ | 177,319
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Liabilities: | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Contingent consideration | ​ | $ | — | ​ | $ | — | ​ | $ | 10,500 | ​ | $ | 10,500
Total liabilities | ​ | $ | — | ​ | $ | — | ​ | $ | 10,500 | ​ | $ | 10,500
​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | December 31, 2024
(In thousands) |  | Level 1 |  | Level 2 |  | Level 3 |  | Total
Assets: |  | ​ |  |  | ​ |  |  | ​ |  |  | ​ |
Cash equivalents | ​ | $ | 22,245 | ​ | $ | — | ​ | $ | — | ​ | $ | 22,245
Marketable securities | ​ |  | — | ​ | ​ | 179,326 | ​ | ​ | — | ​ | ​ | 179,326
Total assets | ​ | $ | 22,245 | ​ | $ | 179,326 | ​ | $ | — | ​ | $ | 201,571
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Liabilities: | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Contingent consideration | ​ | $ | — | ​ | $ | — | ​ | $ | 8,700 | ​ | $ | 8,700
Total liabilities | ​ | $ | — | ​ | $ | — | ​ | $ | 8,700 | ​ | $ | 8,700
​
Schedule of the fair value of available for sale marketable securities | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | June 30, 2025
​ | ​ | ​ | ​ | ​ | Gross | ​ | Gross | ​ | ​ | ​
​ | ​ | Book | ​ | Unrealized | ​ | Unrealized | ​ | Fair
(In thousands) | ​ | Value | ​ | Gain | ​ | Loss | ​ | Value
Marketable securities: | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Corporate debt securities(1) | ​ | $ | 95,360 | ​ | $ | 332 | ​ | $ | (33) | ​ | $ | 95,659
Commercial paper | ​ | ​ | 4,828 | ​ | ​ | — | ​ | ​ | — | ​ | ​ | 4,828
U.S. government debt securities(2) | ​ | ​ | 54,818 | ​ | ​ | 191 | ​ | ​ | (8) | ​ | ​ | 55,001
Total marketable securities | ​ | $ | 155,006 | ​ | $ | 523 | ​ | $ | (41) | ​ | $ | 155,488
| (1) | Included in Corporate debt securities is $40.3 million with maturity dates between one and three years.
| (2) | Included in U.S. government debt securities is $40.7 million with maturity dates between one and three years.
​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | December 31, 2024
​ | ​ | ​ | ​ | ​ | Gross | ​ | Gross | ​ | ​ | ​
​ | ​ | Book | ​ | Unrealized | ​ | Unrealized | ​ | Fair
(In thousands) | ​ | Value | ​ | Gain | ​ | Loss | ​ | Value
Marketable securities: | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Corporate debt securities(1) | ​ | $ | 105,154 | ​ | $ | 192 | ​ | $ | (156) | ​ | $ | 105,190
Commercial paper | ​ | ​ | 4,720 | ​ | ​ | — | ​ | ​ | (1) | ​ | ​ | 4,719
Foreign government agency debt securities | ​ | ​ | 4,911 | ​ | ​ | 16 | ​ | ​ | — | ​ | ​ | 4,927
U.S. government and government agency debt securities(2) | ​ | ​ | 64,454 | ​ | ​ | 47 | ​ | ​ | (11) | ​ | ​ | 64,490
Total marketable securities | ​ | $ | 179,239 | ​ | $ | 255 | ​ | $ | (168) | ​ | $ | 179,326
​ ​
| (1) | Included in Corporate debt securities is $59.8 million with maturity dates between one and three years.
| (2) | Included in U.S. government and government agency debt securities is $30.5 million with maturity dates between one and three years.

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- Definition Tabular disclosure of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale). + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 320 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 9 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147481800/320-10-50-9 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 320 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 3 -Publisher FASB -URI https://asc.fasb.org/1943274/2147481800/320-10-50-3 Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 320 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147481800/320-10-50-2 Reference 4: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 320 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (c) -Publisher FASB -URI https://asc.fasb.org/1943274/2147481800/320-10-50-2 Reference 5: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 320 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147481800/320-10-50-2 Reference 6: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 320 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (aa) -Publisher FASB -URI https://asc.fasb.org/1943274/2147481800/320-10-50-2 Reference 7: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 320 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (aaa) -Publisher FASB -URI https://asc.fasb.org/1943274/2147481800/320-10-50-2 Reference 8: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 320 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (d) -Publisher FASB -URI https://asc.fasb.org/1943274/2147481800/320-10-50-2 Reference 9: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 320 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 3 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147481800/320-10-50-3 Reference 10: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 320 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 3 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147481800/320-10-50-3 Reference 11: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 320 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 3 -Subparagraph (c) -Publisher FASB -URI https://asc.fasb.org/1943274/2147481800/320-10-50-3 Reference 12: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 320 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 3 -Subparagraph (d) -Publisher FASB -URI https://asc.fasb.org/1943274/2147481800/320-10-50-3 + Details
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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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