Securities - Schedule of Components of Investment Securities Gains, Net (Detail) - USD ($) $ in Thousands |
3 Months Ended | 6 Months Ended | ||
|---|---|---|---|---|
Jun. 30, 2026 |
Jun. 30, 2025 |
Jun. 30, 2026 |
Jun. 30, 2025 |
|
| Available-for-sale debt securities: | ||||
| Gains realized on sales | $ 26 | $ 33 | $ 429 | $ 423 |
| Equity securities with readily determinable fair values: | ||||
| Fair value adjustments, net | 62 | 29,472 | (225) | 29,616 |
| Equity securities without readily determinable fair values: | ||||
| Fair value adjustments, net | 8,534 | (60) | 8,849 | (5,303) |
| Sales | 18,465 | 8,240 | 21,080 | 8,167 |
| Total investment securities gains, net | $ 27,087 | $ 37,685 | $ 30,133 | $ 32,903 |