XML 38 R27.htm IDEA: XBRL DOCUMENT
v3.25.3

Investments (Tables) | 9 Months Ended
--- | ---
Sep. 30, 2025
Investments |
Schedule of amortized cost, gross unrealized holding gains and losses included in accumulated other comprehensive income and the fair value of the fixed income securities | The amortized cost, gross unrealized holding gains and losses included in accumulated other comprehensive income and the fair value of the fixed income securities as of September 30, 2025 and December 31, 2024 are presented in the tables below (in thousands): ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | September 30, 2025 | ​
​ |  | Amortized |  | Unrealized |  | Unrealized |  | Fair | ​
​ |  | Cost |  | Gains |  | Losses |  | Value | ​
Cash equivalents: | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Money market funds | ​ | $ | 20,884 | ​ | $ | — | ​ | $ | — | ​ | $ | 20,884 | ​
Cash equivalents | ​ | $ | 20,884 | ​ | $ | — | ​ | $ | — | ​ | $ | 20,884 | ​
Available-for-sale investments-short-term: | ​ | ​ |  | ​ | ​ |  | ​ | ​ |  | ​ | ​ |  | ​
U.S. treasury securities | ​ | $ | 420,331 | ​ | $ | 519 | ​ | $ | — | ​ | $ | 420,850 | ​
Available-for-sale investments – short-term | ​ | $ | 420,331 | ​ | $ | 519 | ​ | $ | — | ​ | $ | 420,850 | ​
Available-for-sale investments-long-term: | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
U.S. treasury securities | ​ | $ | 111,710 | ​ | $ | 261 | ​ | $ | (16) | ​ | $ | 111,955 | ​
Available-for-sale investments – long-term | ​ | $ | 111,710 | ​ | $ | 261 | ​ | $ | (16) | ​ | $ | 111,955 | ​
​ ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | December 31, 2024
​ |  | Amortized |  | Unrealized |  | Unrealized |  | Fair
​ |  | Cost |  | Gains |  | Losses |  | Value
Cash equivalents: | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Money market funds | ​ | $ | 29,806 | ​ | $ | — | ​ | $ | — | ​ | $ | 29,806
U.S. treasury security | ​ | ​ | 24,835 | ​ | ​ | — | ​ | ​ | — | ​ | ​ | 24,835
Cash equivalents | ​ | $ | 54,641 | ​ | $ | — | ​ | $ | — | ​ | $ | 54,641
Available-for-sale investments-short-term: | ​ | ​ |  | ​ | ​ |  | ​ | ​ |  | ​ | ​ |
U.S. treasury securities | ​ | $ | 124,352 | ​ | $ | 69 | ​ | $ | (1) | ​ | $ | 124,420
Available-for-sale investments – short-term | ​ | $ | 124,352 | ​ | $ | 69 | ​ | $ | (1) | ​ | $ | 124,420
Available-for-sale investments-long-term: | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
U.S. treasury security | ​ | $ | 25,059 | ​ | $ | 9 | ​ | $ | — | ​ | $ | 25,068
Available-for-sale investments – long-term | ​ | $ | 25,059 | ​ | $ | 9 | ​ | $ | — | ​ | $ | 25,068

X
- 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
Name: | us-gaap_DebtSecuritiesAvailableForSaleTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- References No definition available. + Details
Name: | us-gaap_InvestmentsDebtAndEquitySecuritiesAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration