Deposits - Additional Information (Detail) - USD ($) $ in Thousands |
Jun. 30, 2026 |
Dec. 31, 2025 |
|---|---|---|
| Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items] | ||
| Time deposits | $ 2,654,569 | $ 2,503,421 |
| Accrued interest payable on deposits | 27,500 | 34,800 |
| Total deposits reclassified to loans due to overdrafts | 1,800 | 2,400 |
| California | ||
| Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items] | ||
| Time deposits | 180,000 | 150,000 |
| Minimum | ||
| Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items] | ||
| Time deposits | 250,000 | |
| Time Deposits More Than $250,000 | ||
| Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items] | ||
| Time deposits | 1,253,083 | 1,137,536 |
| Other Time Deposits | ||
| Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items] | ||
| Time deposits | 1,401,486 | 1,365,885 |
| Brokered deposits | $ 86,900 | $ 88,500 |