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Business Combinations (Details Textual) - USD ($) |  | 12 Months Ended |  |  |
--- | --- | --- | --- | --- | ---
Nov. 30, 2023 | Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022 | Jun. 06, 2022 | Apr. 30, 2021
Business Acquisition [Line Items] |  |  |  |  |  |
Class of Warrant or Right, Exercise Price of Warrants or Rights |  | $ 24.60 |  |  |  |
Goodwill, Transfers | $ 198,627,000 |  | $ 198,627,000 |  |  |
Goodwill, Purchase Accounting Adjustments |  | $ 15,894,000 |  |  |  |
Goodwill |  | $ 214,521,000 | $ 198,627,000 | $ 1,376,736,000 |  |
Pacific Western Bank |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |
Shares, Outstanding | 120,000,000.0 |  |  |  |  |
Banc of California |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |
Shares, Outstanding | 57,000,000.0 |  |  |  |  |
Centerbridge Investor |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |
Common Stock, Warrants Issued, Per Share Price | $ 15.375 |  |  |  |  |
April 30, 2021 Issuance |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |
Subordinated debt |  |  |  |  |  | $ 400,000,000
Preferred Class A |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |
Investment Interest Rate |  |  |  |  | 7.75% |
Pacific Western Bank |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |
Stock Issued During Period, Shares, Acquisitions | 0.6569 |  |  |  |  |
Pacific Western Bank | Preferred Class A |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |
Investment Interest Rate |  |  |  |  | 7.75% |

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