Derivative Financial Instruments - Additional Information (Detail) - Interest Rate Swaps [Member] |
6 Months Ended | 12 Months Ended |
|---|---|---|
Jun. 30, 2026 |
Dec. 31, 2025 |
|
| Not Designated as Hedging Instrument [Member] | ||
| Derivative [Line Items] | ||
| Weighted average maturity period | 5 years 10 months 28 days | 6 years 2 months 1 day |
| Weighted average pay rate | 6.77% | 6.79% |
| Weighted average receive rate | 6.80% | 6.82% |
| Fair Value Hedging [Member] | Designated as Hedging Instrument [Member] | ||
| Derivative [Line Items] | ||
| Weighted average maturity period | 8 years 4 months 9 days | 6 years 3 months 7 days |
| Weighted average pay rate | 4.28% | 4.45% |
| Weighted average receive rate | 6.95% | 7.10% |