Organization and Summary of Significant Accounting Policies	9 Months Ended
	Sep. 30, 2025
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 “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, providing banking and treasury management services to small-, middle-market, and venture-backed businesses. The Bank offers a broad range of loan and deposit products and services through full-service branches throughout California and in Denver, Colorado, and Durham, North Carolina, as well as through regional offices nationwide. The Bank also provides full-service payment processing solutions to its clients and serves the Community Association Management industry nationwide with its technology-forward platform, SmartStreet™. The Bank is committed to its local communities through the Banc of California Charitable Foundation, and 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 services. Our major operating expenses are interest paid by the Bank on deposits and borrowings, compensation expense, customer related expense, occupancy expense, information technology and data processing expense, 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, 2024 as filed with the SEC ("Form 10-K"). Recently Issued Accounting Standards Not Yet Adopted In December 2023, the Financial Accounting Standards Board ("FASB") issued Accounting Standards Update ("ASU") 2023-09, "Income Taxes (Topic 740): Improvements to Income Tax Disclosures." The standard, among other changes, improves annual income tax disclosures by requiring disaggregated information about a reporting entity’s effective tax rate reconciliation as well as information on income taxes paid. The standard is intended to benefit investors by providing more detailed income tax disclosures that would be useful in making capital allocation decisions. The enhanced income tax disclosure requirements apply on a prospective basis to annual financial statements for periods beginning after December 15, 2024. However, retrospective application in all prior periods presented is permitted. The Company expects to adopt the standard on a prospective basis and will provide the required enhanced income tax disclosures in its Annual Report on Form 10-K for the year ending December 31, 2025. In November 2024, the FASB issued ASU 2024-03, "Disaggregation of Income Statement Expenses." The standard, among other changes, requires additional disclosure of the nature of expenses included in the income statement in response to longstanding requests from investors for more information about an entity’s expenses. The new standard requires disclosures about specific types of expenses included in the expense captions presented on the face of the income statement as well as disclosures about selling expenses. The prescribed categories include, among other things, employee compensation, depreciation, and intangible asset amortization. In addition, companies will need to provide qualitative description of the amounts remaining in relevant expense captions that are not separately disaggregated quantitatively. In January 2025, the FASB also issued ASU 2025-01, "Income Statement-Reporting Comprehensive Income-Expense Disaggregation Disclosures-Clarifying the Effective Date," which amends the effective date of ASU 2024-03 to clarify that all public business entities are required to adopt the guidance in annual reporting periods beginning after December 15, 2026, and interim periods within annual reporting periods beginning after December 15, 2027. The enhanced income statement expense disclosure requirements apply on a prospective basis. However, retrospective application in all prior periods presented is permitted. The Company is currently evaluating the impact of this update on its consolidated financial statements and related disclosures. In May 2025, the FASB issued ASU 2025-03, "Business Combinations (Topic 805) and Consolidation (Topic 810): Determining the Accounting Acquirer in the Acquisition of a Variable Interest Entity." The new standard amends the guidance for identifying the accounting acquirer of a variable-interest entity ("VIE") in ASC 805, Business Combinations. Prior to the amendments, the guidance in ASC 805 stipulated that the primary beneficiary of a VIE acquired in a business combination would always be the accounting acquirer. The amendments revise this guidance to require entities to consider the factors in ASC 805-10-55-12 through 55-15 when determining the accounting acquirer in a business combinations that meets both of the following conditions: (1) the transaction is effected primarily by exchanging equity interests; and (2) the legal acquiree is a VIE that meets the definition of a business. This guidance is effective for fiscal years beginning after December 15, 2026 with early adoption permitted. The amendments are required to be applied prospectively to any acquisition transaction that occurs after the initial application date. The Company is currently evaluating the impact of this update on its consolidated financial statements and related disclosures. In September 2025, the FASB issued ASU 2025-06, "Intangibles-Goodwill and Other-Internal-Use Software (Subtopic 350-40): Targeted Improvements to the Accounting for Internal-Use Software." The new standard clarifies and modernizes the accounting for costs related to internal-use software under ASC 350-40. Specifically, the amendments address the accounting for software developed using iterative and agile development methods, clarify the threshold for when capitalization of software costs should begin, and require that the disclosure requirements under ASC 360-10 apply to capitalized internal-use software costs. This guidance is effective for fiscal years beginning after December 15, 2027, with early adoption permitted. Entities may apply the guidance using one of three transition methods: prospective, modified retrospective (based on the project’s status and whether costs were previously capitalized), or full retrospective application. The Company is currently evaluating the impact of this update on its consolidated financial statements and related disclosures. 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. 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 ALLL and the reserve for unfunded loan commitments), the carrying value of goodwill and other intangible assets, and the realization of deferred tax assets. These estimates may be adjusted as more current information becomes available, and any adjustment may be significant.