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Dividend Availability and Regulatory Matters Dividend Availability and Regulatory Matters (Details Textual) - USD ($) $ in Thousands |  | 12 Months Ended | 36 Months Ended
--- | --- | --- | ---
Apr. 30, 2021 | Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2024
Compliance with Regulatory Capital Requirements for Mortgage Companies [Line Items] |  |  |  |  |
Net earnings (loss) |  | $ 126,888 | $ (1,899,137) | $ 423,613 |
Proceeds from Dividends Received |  | 80,000 |  |  |
Retained deficit |  | $ (431,201) | (518,301) |  | $ (431,201)
Capital Required for Capital Adequacy to Risk Weighted Assets |  | 8.00% |  |  | 8.00%
Banking Regulation, Tier 1 Risk-Based Capital Ratio, Capital Adequacy, Minimum |  | 6.00% |  |  | 6.00%
Banking Regulation, Common Equity Tier 1 Risk-Based Capital Ratio, Capital Adequacy, Minimum |  | 4.50% |  |  | 4.50%
Tier One Leverage Capital Required for Capital Adequacy to Average Assets |  | 4.00% |  |  | 4.00%
Capital Required to be Well Capitalized to Risk Weighted Assets |  | 10.00% |  |  | 10.00%
Tier One Risk Based Capital Required to be Well Capitalized to Risk Weighted Assets |  | 8.00% |  |  | 8.00%
Banking Regulation, Common Equity Tier 1 Risk-Based Capital Ratio, Well Capitalized, Minimum |  | 6.50% |  |  | 6.50%
Tier One Leverage Capital Required to be Well Capitalized to Average Assets |  | 5.00% |  |  | 5.00%
Tier One Capital, Trust Preferred Securities Capital Portion |  | $ 131,000 |  |  | $ 131,000
Tier Two Capital, Trust Preferred Securities Capital Portion |  | 796,000 |  |  | 796,000
Deferred tax asset, net |  | 720,587 | $ 739,111 |  | 720,587
April 30, 2021 Issuance |  |  |  |  |
Compliance with Regulatory Capital Requirements for Mortgage Companies [Line Items] |  |  |  |  |
Subordinated debt | $ 400,000 |  |  |  |
Subordinated Borrowing, Interest Rate | 3.25% |  |  |  |
Pacific Western Bank |  |  |  |  |
Compliance with Regulatory Capital Requirements for Mortgage Companies [Line Items] |  |  |  |  |
Net earnings (loss) |  |  |  |  | (1,200,000)
Payments of Ordinary Dividends |  |  |  |  | 255,000
Retained deficit |  | $ (3,000,000) |  |  | $ (3,000,000)
Bank of California, inc. |  |  |  |  |
Compliance with Regulatory Capital Requirements for Mortgage Companies [Line Items] |  |  |  |  |
Capital Required to be Well Capitalized to Risk Weighted Assets |  |  | 10.00% |  |
Tier One Risk Based Capital Required to be Well Capitalized to Risk Weighted Assets |  |  | 8.00% |  |
Banking Regulation, Common Equity Tier 1 Risk-Based Capital Ratio, Well Capitalized, Minimum |  |  | 6.50% |  |
Tier One Leverage Capital Required to be Well Capitalized to Average Assets |  |  | 5.00% |  |
Banking Regulation, Capital Conservation Buffer, Common Equity Tier 1 Risk-Based Capital, Actual |  |  | 7.00% |  |
Banking Regulation, Capital Conservation Buffer, Tier 1 Risk-Based Capital, Actual |  |  | 8.50% |  |
Banking Regulation, Capital Conservation Buffer, Total Risk-Based Capital, Actual |  |  | 10.50% |  |
Common Equity Tier One Capital Ratio |  | 10.55% | 10.14% |  | 10.55%
Deferred tax asset, net |  | $ 307,600 |  |  | $ 307,600
Banc of California |  |  |  |  |
Compliance with Regulatory Capital Requirements for Mortgage Companies [Line Items] |  |  |  |  |
Deferred tax asset, net |  | $ 293,500 |  |  | $ 293,500

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