Equity and Long-Term Investments and Fair Value Measurements - Reconciliation of Equity and Long-Term Investments Balances (Details) - USD ($) $ in Thousands |
3 Months Ended | 6 Months Ended | 12 Months Ended | ||
|---|---|---|---|---|---|
Jun. 30, 2026 |
Jun. 30, 2025 |
Jun. 30, 2026 |
Jun. 30, 2025 |
Dec. 31, 2025 |
|
| Fair Value Disclosures [Abstract] | |||||
| Equity and long-term investments | $ 404,497 | $ 341,664 | $ 341,664 | ||
| Purchases of trading securities | 43,204 | 61,729 | |||
| Proceeds from trading securities | (8,427) | ||||
| Purchases of equity and other long-term investments | 30,021 | 0 | 17,533 | ||
| Net sales and purchases of investments managed by ISP Fund | (47,500) | (120,955) | |||
| Changes in fair value, net | $ (29,153) | $ 11,280 | 4,422 | $ (54,019) | 20,160 |
| Reclassification of current portion | 7,059 | 91,805 | |||
| Other | (395) | 988 | |||
| Equity and long-term investments | $ 441,308 | $ 441,308 | $ 404,497 | ||