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Income Taxes (Tables) | 12 Months Ended
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Dec. 31, 2025
Income Tax Disclosure [Abstract] |
Schedule of Components of Income Tax Expense (Benefit) | The following table presents the components of income tax expense (benefit) for the years ended December 31:
| Year ended December 31,
($ in thousands) | 2025 |  | 2024 |  | 2023
Current: |  |  |  |  |
Federal | $ | 63,474 |  |  | $ | 41,477 |  |  | $ | 40,471 |
State and local | 13,283 |  |  | 8,022 |  |  | 9,616 |
Total current | 76,757 |  |  | 49,499 |  |  | 50,087 |
Deferred: |  |  |  |  |
Federal | 4,981 |  |  | (2,535) |  |  | 283 |
State and local | 605 |  |  | (986) |  |  | 2,097 |
Total deferred | 5,586 |  |  | (3,521) |  |  | 2,380 |
Total income tax expense | $ | 82,343 |  |  | $ | 45,978 |  |  | $ | 52,467 |
Schedule of Income Tax Rate Reconciliation | The following table presents a reconciliation by rate and amount of expected income tax expense computed by applying the statutory federal income tax rate to income before income taxes reflected in the Consolidated Statements of Income to the effective income tax expense:
| Year ended December 31,
| Amount |  | Rate |  | Amount |  | Amount
($ in thousands) | 2025 |  | 2024 |  | 2023
Income tax expense at federal statutory rate | $ | 59,581 |  |  | 21.0 | % |  | $ | 48,561 |  |  | $ | 51,770 |
Increase (decrease) in income tax resulting from: |  |  |  |  |  |  |
State and local income taxes, net (1) | 11,326 |  |  | 4.0 | % |  | 7,334 |  |  | 9,445 |
Federal tax credits: |  |  |  |  |  |  |
New Markets Tax Credits | (3,958) |  |  | (1.4) | % |  | — |  |  | — |
Low-income housing tax credits (“LIHTC”) | (1,764) |  |  | (0.6) | % |  | 285 |  |  | (56) |
Other federal tax credits | (1,611) |  |  | (0.6) | % |  | (5,619) |  |  | (4,364) |
Total federal tax credits | (7,333) |  |  | (2.6) | % |  | (5,334) |  |  | (4,420) |
ITC recapture | 24,148 |  |  | 8.5 | % |  | — |  |  | — |
Nontaxable or nondeductible items: |  |  |  |  |  |  |
Tax-exempt interest income, net | (7,137) |  |  | (2.5) | % |  | (5,124) |  |  | (4,942) |
Bank-owned life insurance | (1,558) |  |  | (0.6) | % |  | (892) |  |  | (888) |
Non-deductible expenses | 3,152 |  |  | 1.1 | % |  | 1,524 |  |  | 2,059 |
Excess tax benefits | (623) |  |  | (0.2) | % |  | 28 |  |  | (251) |
Total nontaxable or nondeductible items | (6,166) |  |  | (2.2) | % |  | (4,464) |  |  | (4,022) |
Other, net | 787 |  |  | 0.3 | % |  | (119) |  |  | (306) |
Total income tax expense | $ | 82,343 |  |  | 29.0 | % |  | $ | 45,978 |  |  | $ | 52,467 |
(1) State taxes in California made up the majority (greater than 50 percent) of the tax effect in this category.
Schedule of Deferred Tax Assets and Deferred Tax Liabilities | The following table presents the tax effect of temporary differences that gave rise to significant portions of the deferred tax assets and deferred tax liabilities for the periods indicated:
| Year ended December 31,
($ in thousands) | 2025 |  | 2024
Deferred tax assets: |  |  |
Allowance for loan losses | $ | 34,325 |  |  | $ | 34,212 |
Loans held-for-sale | 2,633 |  |  | 3,304 |
OREO | — |  |  | 39 |
Deferred compensation | 6,413 |  |  | 5,209 |
Accrued compensation | 6,897 |  |  | 6,265 |
Unrealized losses on securities, net | 18,437 |  |  | 38,734 |
Net operating losses and tax credits | 5,042 |  |  | 5,299 |
Lease liability accrual | 6,812 |  |  | 6,485 |
Other investments | 11,216 |  |  | 5,587 |
Research and experimental expenses | — |  |  | 1,473 |
Fixed assets | — |  |  | 2,802 |
Deferred expenses | 2,610 |  |  | 3,021 |
Other deferred tax assets | 4,165 |  |  | 3,248 |
Total deferred tax assets | 98,550 |  |  | 115,678 |
Deferred tax liabilities: |  |  |
Acquired loans | 1,490 |  |  | 1,922 |
Intangible assets | 8,880 |  |  | 8,756 |
Right of use asset | 6,032 |  |  | 5,644 |
Anticipated insurance proceeds | 8,060 |  |  | — |
Other investments | 10,901 |  |  | 10,233 |
Other deferred tax liabilities | 1,049 |  |  | 951 |
Total deferred tax liabilities | 36,412 |  |  | 27,506 |
Net deferred tax asset before valuation allowance | 62,138 |  |  | 88,172 |
Less: valuation allowance | 2,812 |  |  | 2,812 |
Net deferred tax asset | $ | 59,326 |  |  | $ | 85,360 |
Schedule of Unrecognized Tax Benefits | The following table summarizes the activity in the gross liability for unrecognized tax benefits for the periods presented:
($ in thousands) | 2025 |  | 2024 |  | 2023
Balance at beginning of year | $ | 5,016 |  |  | $ | 3,077 |  |  | $ | 2,724 |
Additions based on tax positions related to the current year | 1,347 |  |  | 1,212 |  |  | 727 |
Additions for tax positions of prior years | — |  |  | 1,128 |  |  | 24 |
Settlements or lapse of statute of limitations | (338) |  |  | (401) |  |  | (398) |
Balance at end of year | $ | 6,025 |  |  | $ | 5,016 |  |  | $ | 3,077 |
Schedule of Cash Flow, Supplemental Disclosures | The following table presents the components of income taxes paid disaggregated by jurisdiction for the year ended December 31:
($ in thousands) | 2025
Federal | $ | 71,051 |
State and local: |
California | 6,932 |
All other state and local | 4,888 |
Total state and local | 11,820 |
Total income taxes paid | $ | 82,871 |

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