Available-for-Sale Securities - Additional Information (Detail) |
6 Months Ended | 12 Months Ended |
|---|---|---|
Jun. 30, 2026 |
Dec. 31, 2025 |
|
| Investments, Debt and Equity Securities [Abstract] | ||
| Available-for-sale securities weighted average contractual maturity period | 6 months | 7 months 6 days |