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Fair Value of Financial Assets and Liabilities (Tables) | 9 Months Ended
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Sep. 30, 2024
Fair Value of Financial Assets and Liabilities |
Schedule of assets and liabilities measured at fair value on a recurring and non-recurring basis | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | September 30, 2024
(In thousands) |  | Level 1 |  | Level 2 |  | Level 3 |  | Total
Assets: |  | ​ |  |  | ​ |  |  | ​ |  |  | ​ |
Cash equivalents | ​ | $ | 45,450 | ​ | $ | — | ​ | $ | — | ​ | $ | 45,450
Marketable securities | ​ |  | — | ​ | ​ | 125,785 | ​ | ​ | — | ​ | ​ | 125,785
Total assets | ​ | $ | 45,450 | ​ | $ | 125,785 | ​ | $ | — | ​ | $ | 171,235
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Liabilities: | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Contingent consideration | ​ | $ | — | ​ | $ | — | ​ | $ | 10,000 | ​ | $ | 10,000
Total liabilities | ​ | $ | — | ​ | $ | — | ​ | $ | 10,000 | ​ | $ | 10,000
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​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | December 31, 2023
(In thousands) |  | Level 1 |  | Level 2 |  | Level 3 |  | Total
Assets: |  | ​ |  |  | ​ |  |  | ​ |  |  | ​ |
Cash equivalents | ​ | $ | 32,177 | ​ | $ | — | ​ | $ | — | ​ | $ | 32,177
Marketable securities | ​ |  | — | ​ | ​ | 141,999 | ​ | ​ | — | ​ | ​ | 141,999
Total assets | ​ | $ | 32,177 | ​ | $ | 141,999 | ​ | $ | — | ​ | $ | 174,176
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Liabilities: | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Contingent consideration | ​ | $ | — | ​ | $ | — | ​ | $ | 6,200 | ​ | $ | 6,200
Total liabilities | ​ | $ | — | ​ | $ | — | ​ | $ | 6,200 | ​ | $ | 6,200
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Schedule of the fair value of available for sale marketable securities | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | September 30, 2024
​ | ​ | ​ | ​ | ​ | Gross | ​ | Gross | ​ | ​ | ​
​ | ​ | Book | ​ | Unrealized | ​ | Unrealized | ​ | Fair
(In thousands) | ​ | Value | ​ | Gain | ​ | Loss | ​ | Value
Marketable securities: | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Corporate debt securities(1) | ​ | $ | 73,258 | ​ | $ | 414 | ​ | $ | (36) | ​ | $ | 73,636
Asset-backed debt securities | ​ | ​ | 4,981 | ​ | ​ | — | ​ | ​ | (3) | ​ | ​ | 4,978
Foreign government agency debt securities | ​ | ​ | 4,872 | ​ | ​ | 32 | ​ | ​ | — | ​ | ​ | 4,904
U.S. government and government agency debt securities(2) | ​ | ​ | 42,246 | ​ | ​ | 63 | ​ | ​ | (42) | ​ | ​ | 42,267
Total marketable securities | ​ | $ | 125,357 | ​ | $ | 509 | ​ | $ | (81) | ​ | $ | 125,785
(1) Included in Corporate debt securities is $40.5 million with maturity dates between one and two years. | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
(2) Included in U.S. government and government agency debt securities is $5.1 million with maturity dates between one and two years. | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | December 31, 2023
​ | ​ | ​ | ​ | ​ | Gross | ​ | Gross | ​ | ​ | ​
​ | ​ | Book | ​ | Unrealized | ​ | Unrealized | ​ | Fair
(In thousands) | ​ | Value | ​ | Gain | ​ | Loss | ​ | Value
Marketable securities: | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Corporate debt securities(1) | ​ | $ | 52,362 | ​ | $ | 65 | ​ | $ | (142) | ​ | $ | 52,285
Commercial paper | ​ | ​ | 12,345 | ​ | ​ | 2 | ​ | ​ | (1) | ​ | ​ | 12,346
Asset-backed debt securities(2) | ​ | ​ | 10,953 | ​ | ​ | 42 | ​ | ​ | (30) | ​ | ​ | 10,965
Foreign government agency debt securities(3) | ​ | ​ | 4,698 | ​ | ​ | 43 | ​ | ​ | — | ​ | ​ | 4,741
U.S. government and government agency debt securities(4) | ​ | ​ | 61,750 | ​ | ​ | 8 | ​ | ​ | (96) | ​ | ​ | 61,662
Total marketable securities | ​ | $ | 142,108 | ​ | $ | 160 | ​ | $ | (269) | ​ | $ | 141,999
(1) Included in Corporate debt securities is $28.0 million with maturity dates between one and two years. | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
(2) Included in Asset-backed debt securities is $6.2 million with maturity dates between one and three years. | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
(3) Included in Foreign government agency debt securities is $4.7 million with a maturity date between one and two years. | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
(4) Included in U.S. government and government agency debt securities is $23.9 million with maturity dates between one and two 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/2003/role/disclosureRef -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 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -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 + Details
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