XML 36 R26.htm IDEA: XBRL DOCUMENT
v3.25.2

Marketable Securities (Tables) | 6 Months Ended
--- | ---
Jun. 30, 2025
Marketable Securities |
Schedule of marketable debt securities, classified as available-for-sale | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Amortized | ​ | Gross Unrealized | ​ | Gross Unrealized | ​ | Fair
​ |  | Cost |  | Gains |  | Losses |  | Value
​ | ​ | (In thousands)
June 30, 2025 | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Marketable securities | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
U.S. government and municipal obligations | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Maturing in one year or less | ​ | $ | 186,628 | ​ | $ | 308 | ​ | $ | (5) | ​ | $ | 186,931
Maturing after one year through three years | ​ | ​ | 67,183 | ​ | ​ | 273 | ​ | ​ | (39) | ​ | ​ | 67,417
Total U.S. government and municipal obligations | ​ | $ | 253,811 | ​ | $ | 581 | ​ | $ | (44) | ​ | $ | 254,348
Corporate debt securities | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Maturing in one year or less | ​ | $ | 284,286 | ​ | $ | 164 | ​ | $ | (36) | ​ | $ | 284,414
Maturing after one year through three years | ​ | ​ | 68,452 | ​ | ​ | 117 | ​ | ​ | (38) | ​ | ​ | 68,531
Total corporate debt securities | ​ | $ | 352,738 | ​ | $ | 281 | ​ | $ | (74) | ​ | $ | 352,945
Total marketable securities | ​ | $ | 606,549 | ​ | $ | 862 | ​ | $ | (118) | ​ | $ | 607,293
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Amortized | ​ | Gross Unrealized | ​ | Gross Unrealized | ​ | Fair
​ |  | Cost |  | Gains |  | Losses |  | Value
​ | ​ | (In thousands)
December 31, 2024 | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Marketable securities | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
U.S. government and municipal obligations | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Maturing in one year or less | ​ | $ | 185,388 | ​ | $ | 467 | ​ | $ | — | ​ | $ | 185,855
Maturing after one year through three years | ​ | ​ | 102,331 | ​ | ​ | 316 | ​ | ​ | (144) | ​ | ​ | 102,503
Total U.S. government and municipal obligations | ​ | $ | 287,719 | ​ | $ | 783 | ​ | $ | (144) | ​ | $ | 288,358
Corporate debt securities | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Maturing in one year or less | ​ | $ | 336,350 | ​ | $ | 350 | ​ | $ | (54) | ​ | $ | 336,646
Maturing after one year through three years | ​ | ​ | 72,139 | ​ | ​ | 36 | ​ | ​ | (254) | ​ | ​ | 71,921
Total corporate debt securities | ​ | $ | 408,489 | ​ | $ | 386 | ​ | $ | (308) | ​ | $ | 408,567
Total marketable securities | ​ | $ | 696,208 | ​ | $ | 1,169 | ​ | $ | (452) | ​ | $ | 696,925

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 Tabular disclosure of the reconciliation of available-for-sale securities from cost basis to fair value. + References No definition available. + Details
Name: | us-gaap_ScheduleOfAvailableForSaleSecuritiesReconciliationTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration