XML 20 R12.htm IDEA: XBRL DOCUMENT
v3.25.2

Investments | 6 Months Ended
--- | ---
Jun. 30, 2025
Investments, Debt and Equity Securities [Abstract] |
Investments | 3. Investments. Available-for-sale investments by security type were as follows (in thousands):
|  | Estimated Fair Value |  |  | Gross Unrealized Gains |  |  | Gross Unrealized Losses |  |  | Amortized Cost |
At June 30, 2025: |  |  |  |  |  |  |  |  |  |  |  |
U.S. Treasuries - Cash equivalents |  | $ | 407,687 |  |  | $ | 41 |  |  | $ | — |  |  | $ | 407,646 |
Total |  | $ | 407,687 |  |  | $ | 41 |  |  | $ | — |  |  | $ | 407,646 |
At December 31, 2024: |  |  |  |  |  |  |  |  |  |  |  |
U.S. Treasuries - Cash equivalents |  | $ | 329,457 |  |  | $ | 84 |  |  | $ | — |  |  | $ | 329,373 |
Total |  | $ | 329,457 |  |  | $ | 84 |  |  | $ | — |  |  | $ | 329,373 |
There were no realized gains or losses from available-for-sale securities during the three and six months ended June 30, 2025 and 2024. The estimated fair values of available-for-sale securities at June 30, 2025, by contractual maturity, are summarized as follows (in thousands):
|  | June 30, 2025 |
Due in one year or less |  | $ | 407,687 |
|  | For the Three Months Ended June 30, |  |  | For the Six Months Ended June 30, |
|  | 2025 |  |  | 2024 |  |  | 2025 |  |  | 2024 |
Equity securities: |  |  |  |  |  |  |  |  |  |  |  |
Net gains (losses) recognized during the period on equity securities |  | $ | (2,952 | ) |  | $ | (2,262 | ) |  | $ | (308 | ) |  | $ | (3,406 | )
Unrealized net gains (losses) recognized during the period on equity securities still held at the reporting date |  | $ | (2,952 | ) |  | $ | (2,262 | ) |  | $ | (308 | ) |  | $ | (3,406 | )
There were no purchases or sales of equity securities during the three and six months ended June 30, 2025 and 2024.

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

X
- Definition The entire disclosure for investments in certain debt and equity securities. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 940 -SubTopic 320 -Name Accounting Standards Codification -Publisher FASB -URI https://asc.fasb.org/940-320/tableOfContent Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name Regulation S-K (SK) -Number 229 -Section 1403 -Paragraph b -Publisher SEC Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 320 -Name Accounting Standards Codification -Publisher FASB -URI https://asc.fasb.org/320/tableOfContent Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Topic 320 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 10 -Subparagraph (d) -Publisher FASB -URI https://asc.fasb.org/1943274/2147481800/320-10-50-10 Reference 5: http://www.xbrl.org/2003/role/disclosureRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 6B -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482106/820-10-50-6B Reference 6: http://www.xbrl.org/2003/role/disclosureRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 6B -Subparagraph (c) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482106/820-10-50-6B Reference 7: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 942 -SubTopic 320 -Name Accounting Standards Codification -Publisher FASB -URI https://asc.fasb.org/942-320/tableOfContent + Details
Name: | us-gaap_InvestmentsInDebtAndMarketableEquitySecuritiesAndCertainTradingAssetsDisclosureTextBlock
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration