Organization and Summary of Significant Accounting Policies	9 Months Ended
	Sep. 30, 2024
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Organization and Summary of Significant Accounting Policies	ORGANIZATION AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES Banc of California, Inc., a Maryland corporation, was incorporated in March 2002 and serves as the holding company for its wholly owned subsidiary, Banc of California (the “Bank”), a California state-chartered bank and member of the FRB. When we refer to the “parent” or the “holding company," we are referring to Banc of California, Inc., the parent company, on a stand-alone basis. When we refer to “we,” “us,” “our,” or the “Company,” we are referring to Banc of California, Inc. and its consolidated subsidiaries including the Bank, collectively. As a bank holding company, Banc of California, Inc. is subject to ongoing and comprehensive supervision, regulation, examination, and enforcement by the FRB. As a California state-chartered bank and a member of the FRB, the Bank is subject to ongoing and comprehensive supervision, regulation, examination, and enforcement by the DFPI and the FRB. The Bank is also a member of the FHLB system, and its deposit accounts are insured by the Deposit Insurance Fund (the "DIF") of the FDIC. Banc of California is one of the nation's premier relationship-based business banks focused on providing banking and treasury management services to small-, middle-market, and venture-backed businesses. The Bank provides a broad range of loan and deposit products and services through 80 full-service branches located throughout California and in Denver, Colorado, and Durham, North Carolina, as well as full-stack payment processing solutions through its subsidiary, Deepstack Technologies, LLC (“Deepstack”). Banc of California also serves the Community Association Management Industry nationwide with its technology-forward platform SmartStreet™. The Bank is committed to its local communities by supporting organizations that provide financial literacy and job training, small business support, affordable housing, and more. We generate our revenue primarily from interest received on loans and leases and, to a lesser extent, from interest received on investment securities, and fees received in connection with deposit services, extending credit and other services offered, including treasury management and investment management services. Our major operating expenses are interest paid by the Bank on deposits and borrowings, compensation, occupancy, and general operating expenses. Significant Accounting Policies Our accounting policies are described in Note 1. Nature of Operations and Summary of Significant Accounting Policies, of our audited consolidated financial statements included in our Annual Report on Form 10-K for the year ended December 31, 2023 as filed with the SEC ("Form 10-K"). Accounting Standards Adopted in 2024 Effective January 1, 2024, the Company adopted ASU 2022-03, "Fair Value Measurement (Topic 820): Fair Value Measurement of Equity Securities Subject to Contractual Sale Restrictions." This standard clarifies that a contractual sale restriction should not be considered in measuring fair value. It also requires entities with investments in equity securities subject to contractual sale restrictions to disclose certain qualitative and quantitative information about such securities. The Company does not take into account contractual sale restrictions in determining the fair value of its equity securities, therefore, the adoption of this amendment did not have a material impact on the Company's consolidated financial statements. Effective January 1, 2024, the Company adopted ASU 2023-02, "Investments - Equity Method and Joint Ventures (Topic 323): Accounting for Investments in Tax Credit Structures Using the Proportional Amortization Method (a consensus of the Emerging Issues Task Force)." This standard expands the proportional amortization method to account for investments in all tax credit structures. That accounting method was previously allowed only for low-income housing tax credit ("LIHTC") investments, but now is available, by election, to all community development tax credit investment reporting that meets five conditions. Under the new guidance, reporting entities can make accounting policy elections on a tax-credit-program-by-tax-credit-program basis, rather than for individual investments or at the reporting entity level. The Company adopted this update on a prospective basis and determined that the adoption of this amendment did not have a material impact on the Company's consolidated financial statements. Basis of Presentation The accounting and reporting policies of the Company are in accordance with U.S. generally accepted accounting principles, which we may refer to as U.S. GAAP. In the opinion of management, all significant intercompany accounts and transactions have been eliminated and adjustments, consisting solely of normal recurring accruals and considered necessary for the fair presentation of financial statements, have been included. On November 30, 2023, PacWest Bancorp merged with and into Banc of California, Inc. (the “Merger”), with Banc of California, Inc. continuing as the surviving legal corporation and Banc of California, Inc. concurrently closed a $400 million equity capital raise. The Merger was accounted for as a reverse merger using the acquisition method of accounting, therefore, PacWest Bancorp was deemed the acquirer for financial reporting purposes, even though Banc of California, Inc. was the legal acquirer. The Merger was an all-stock transaction and has been accounted for as a business combination. Banc of California, Inc.'s financial results for all periods ended prior to November 30, 2023 reflect PacWest Bancorp results only on a standalone basis. In addition, Banc of California, Inc.'s reported financial results for the year ended December 31, 2023 reflect PacWest Bancorp financial results only on a standalone basis until the closing of the Merger on November 30, 2023, and results of the combined company for the month of December 2023. The number of shares issued and outstanding, earnings per share, and all references to share quantities or metrics of Banc of California, Inc. have been retrospectively restated to reflect the equivalent number of shares issued in the Merger as the Merger was accounted for as a reverse merger. Under the reverse merger method of accounting, the assets and liabilities of legacy Banc of California, Inc. as of November 30, 2023 were recorded at their respective fair values. The interim condensed consolidated financial statements and notes thereto should be read in conjunction with the audited consolidated financial statements and notes thereto included in our Form 10-K. Use of Estimates The Company has made a number of estimates and assumptions relating to the reporting of assets and liabilities and the disclosure of contingent assets and liabilities at the date of the consolidated financial statements and the reported amounts of revenue and expenses during the reporting period to prepare these consolidated financial statements in conformity with U.S. GAAP. Actual results could differ from those estimates. Material estimates subject to change in the near term include, among other items, the allowance for credit losses (the combination of the allowance for loan and lease losses and the reserve for unfunded loan commitments), the carrying value of goodwill and other intangible assets, the fair value of assets and liabilities acquired in business combinations and the related purchase price allocation, and the realization of deferred tax assets. These estimates may be adjusted as more current information becomes available, and any adjustment may be significant. Reclassifications Certain prior period amounts have been reclassified to conform to the current period's presentation format.