Organization	6 Months Ended
Organization	Jun. 30, 2023
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Organization	ORGANIZATION PacWest Bancorp, a Delaware corporation, is a bank holding company registered under the BHCA and headquartered in Los Angeles, California, with an executive office in Denver, Colorado. Our principal business is to serve as the holding company for our wholly-owned subsidiary, Pacific Western Bank. References to "Pacific Western" or the "Bank" refer to Pacific Western Bank together with its wholly-owned subsidiaries. References to "we," "us," or the "Company" refer to PacWest Bancorp together with its subsidiaries on a consolidated basis. When we refer to "PacWest" or to the "holding company," we are referring to PacWest Bancorp, the parent company, on a stand-alone basis. The Bank is a relationship-based community bank focused on providing business banking and treasury management services to small, middle-market, and venture-backed businesses. The Bank offers a broad range of loan and lease and deposit products and services through full-service branches throughout California and in Durham, North Carolina and Denver, Colorado, and loan production offices around the country. 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, 2022 as filed with the Securities and Exchange Commission ("Form 10-K"). Updates to our significant accounting policies described below reflect the impact of the adoption of ASU 2022-02, "Financial Instruments - Credit Losses (Topic 326): Troubled Debt Restructurings and Vintage Disclosures ("ASU 2022-02")," specifically the amendment to troubled debt restructurings, and organizational changes which resulted in changes to our reportable operating segments. Loan Modifications to Borrowers Experiencing Financial Difficulty Loan modifications made to borrowers experiencing financial difficulty constitute modifications of receivables in the form of principal forgiveness, an interest rate reduction, an other than-insignificant payment delay, or a term extension. ASU 2022-02 eliminated the concept of troubled debt restructurings and introduced broader modification reporting requirements. Previously, troubled debt restructurings included any type of modification that included a below market concession which was granted both to a borrower in financial difficulty and as a result of financial difficulty. Loan modifications made to borrowers experiencing financial difficulty no longer consider whether a market concession has been granted, as was required with troubled debt restructurings, but rather includes as modifications within the four listed reportable modification types to a borrower deemed to be experiencing financial difficulty. An assessment of whether a borrower is experiencing financial difficulty is made on the date of the modification. Loans reported in this classification have a rating of substandard or worse, and may include both accruing and nonaccruing loans. Loans are assessed to determine whether the modification constitutes a new loan or a continuation of the existing loan. Depending on the terms of the modification and nature of the borrower, this may result in a downgrade or placing a loan on nonaccrual status, which in turn would impact the loan's classification within the ALLL. Because the effect of most modifications made to borrowers experiencing financial difficulty is already included in the allowance for credit losses because of the measurement methodologies used to estimate the allowance, a change to the allowance for credit losses is generally not recorded upon modification. Business Segments We regularly assess our strategic plans, operations, reporting structures and financial information provided to management to identify our reportable segments. Civic, a lending subsidiary we acquired in February 2021, has historically been identified as an operating segment. In the fourth quarter of 2022, Civic met a quantitative threshold which required it to be disclosed as a reportable operating segment. Therefore, we had two reportable operating segments as of December 31, 2022: Commercial Banking and Civic, and a third segment, Other, which was used for inter-segment eliminations. In the first quarter of 2023, we began a restructuring of Civic which included removing most of Civic's top management and transferring day-to-day management of most of Civic's operating functions to managers at the Bank. Due to the restructuring of Civic, discrete financial information is no longer prepared. Our management reporting captures the direct expenses of Civic, however, none of the expenses now being incurred to manage Civic are being directly charged or allocated to Civic. Therefore, it is no longer feasible to produce meaningful, separate full financial statements, and thus, discrete financial information for Civic is no longer prepared or distributed to our chief operating decision maker. Thus, Civic no longer meets the criteria to be considered a reportable operating segment as of March 31, 2023. We sold the Civic business in the second quarter of 2023, and we are retaining and servicing the Civic loans on our balance sheet. At June 30, 2023 and March 31, 2023, we operated as one reportable segment - Commercial Banking. Accounting Standards Adopted in 2023 Effective January 1, 2023, we completed the adoption of ASU 2022-02, “Financial Instruments – Credit Losses (Topic 326): Troubled Debt Restructurings and Vintage Disclosures," by eliminating the accounting guidance for TDRs by creditors, in ASC 310-40, "Receivables – Troubled Debt Restructurings by Creditors," while enhancing disclosure requirements for restructurings involving borrowers that are experiencing financial difficulty. The Company updated its disclosures in Note 4. Loans and Leases to present information regarding loan modifications to borrowers experiencing financial difficulty. There was no transition adjustment recorded to retained earnings upon adoption. The adoption of this amendment did not have a material impact on the Company’s condensed consolidated financial statements. Basis of Presentation Our interim condensed consolidated financial statements are prepared in accordance with U.S. GAAP for interim financial information and pursuant to the requirements for reporting on Form 10-Q and Article 10 of Regulation S-X of the Securities Exchange Act of 1934. Accordingly, certain disclosures accompanying annual consolidated financial statements are omitted. 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 for the interim periods, have been included. The current period's results of operations are not necessarily indicative of the results that ultimately may be achieved for the year. 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 We have made a number of estimates and assumptions related to the reporting of assets and liabilities and the disclosure of contingent assets and liabilities at the date of the condensed consolidated financial statements and the reported amounts of revenue and expenses during the reporting period to prepare these condensed 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 intangible assets, the fair value of loans held for sale, 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. In our loan and allowance tables, we realigned certain of our loan portfolio classes and subclasses to better reflect and report our lending. We made the following changes: (1) moved the "Multi-family" loan subclass from the residential real estate mortgage class into its own loan class; (2) moved the "Construction - renovation" loan subclass from the residential real estate construction and land loan class to the residential real estate mortgage class and renamed it "Residential renovation;" and (3) renamed the residential real estate mortgage loan class as "Other residential." All of the loan and allowance tables, both current period and prior periods, reflect these changes and realignment. Risks and Uncertainties The recent bank failures involving three prominent regional banks resulted in significant market volatility among publicly traded bank holding companies, and, in particular, regional banks like PacWest. These bank failures, and the resulting customer fear of additional bank failures, increased the following risks and uncertainties regarding our business: (i) the loss of customer deposits which, in turn, put pressure on our liquidity position, (ii) the decrease in our net interest margin resulting from replacing lower-cost customer deposits with higher-cost brokered deposits and borrowings, (iii) the downgrading of our credit rating by third-party rating agencies which may result in increased borrowing costs and/or trigger additional collateral or funding requirements, and (iv) the potential for operating costs to increase due to higher FDIC assessments and other costs necessary to respond to increased regulatory requirements. To respond to these increased risks and uncertainties, we have taken the following actions to mitigate these risks: (a) we pledged additional assets as collateral for borrowings to increase our liquidity position for potential deposit outflows, (b) we increased the number of customers enrolled in reciprocal deposit programs that increases the amount of FDIC insurance coverage on their account(s) to help retain these customers, (c) we are offering competitive promotional rates on our deposit products to attract new customer deposits, (d) we completed strategic asset sales in the second quarter of 2023 to improve our liquidity position and capital ratios, and (e) in the second quarter of 2023, we reduced our common dividend from $0.25 to $0.01 to improve our liquidity position and capital ratios.
Risks and Uncertainties – Market Volatility	Risks and Uncertainties The recent bank failures involving three prominent regional banks resulted in significant market volatility among publicly traded bank holding companies, and, in particular, regional banks like PacWest. These bank failures, and the resulting customer fear of additional bank failures, increased the following risks and uncertainties regarding our business: (i) the loss of customer deposits which, in turn, put pressure on our liquidity position, (ii) the decrease in our net interest margin resulting from replacing lower-cost customer deposits with higher-cost brokered deposits and borrowings, (iii) the downgrading of our credit rating by third-party rating agencies which may result in increased borrowing costs and/or trigger additional collateral or funding requirements, and (iv) the potential for operating costs to increase due to higher FDIC assessments and other costs necessary to respond to increased regulatory requirements. To respond to these increased risks and uncertainties, we have taken the following actions to mitigate these risks: (a) we pledged additional assets as collateral for borrowings to increase our liquidity position for potential deposit outflows, (b) we increased the number of customers enrolled in reciprocal deposit programs that increases the amount of FDIC insurance coverage on their account(s) to help retain these customers, (c) we are offering competitive promotional rates on our deposit products to attract new customer deposits, (d) we completed strategic asset sales in the second quarter of 2023 to improve our liquidity position and capital ratios, and (e) in the second quarter of 2023, we reduced our common dividend from $0.25 to $0.01 to improve our liquidity position and capital ratios.