Basis of Presentation	6 Months Ended
Basis of Presentation	Jun. 30, 2021
Basis Of Presentation [Abstract]
Basis of Presentation	Basis of Presentation The consolidated financial statements included herein have been prepared without an audit, pursuant to the rules and regulations of the Securities and Exchange Commission (the “SEC”), except for the Consolidated Statement of Financial Condition as of December 31, 2020 which was from the audited financial statements included in the Company’s 2020 Annual Report on Form 10-K. Certain information and footnote disclosures normally included in annual financial statements prepared in accordance with accounting principles generally accepted in the United States of America have been condensed or omitted pursuant to such SEC rules and regulations. The consolidated financial statements include the accounts of Hope Bancorp and its wholly owned subsidiaries, principally Bank of Hope. All intercompany transactions and balances have been eliminated in consolidation. The Company has made all adjustments, that in the opinion of management, are necessary to fairly present the Company’s financial position at June 30, 2021 and December 31, 2020 and the results of operations for the three and six months ended June 30, 2021 and 2020. Certain reclassifications have been made to prior period amounts to conform to the current year presentation. The results of operations for the interim periods are not necessarily indicative of results to be anticipated for the full year. The preparation of consolidated financial statements in conformity with U.S. generally accepted accounting principles (“GAAP”) requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. Actual results could differ significantly from those estimates. The global pandemic resulting from the outbreak of the novel strain of coronavirus (“COVID-19”) has substantially and negatively impacted the United States economy, disrupted global supply chains, considerably lowered equity market valuations, created significant volatility and disruption in financial markets, and materially increased unemployment levels. In addition, the pandemic has resulted in temporary closures of countless businesses and the institution of social distancing and sheltering in place requirements in most states and communities. Although some states have relaxed some of the business closures and other social distancing requirements, the recent rise in COVID-19 cases due to the COVID-19 Delta variant has resulted in states reinstating certain COVID related restrictions. The Company has, and could continue to, experience a material and adverse effect on its business as a result of the impact of the COVID-19 pandemic, and the resulting governmental actions to curtail its spread. It is at least reasonably possible that information which was available to the Company at the date of the financial statements will change in the near term due to the COVID-19 pandemic and that the effect of the change could be material to the financial statements. The extent to which the COVID-19 pandemic will impact the Company’s estimates and assumptions is highly uncertain. These unaudited consolidated financial statements should be read along with the audited consolidated financial statements and accompanying notes included in the Company’s 2020 Annual Report on Form 10-K. Pending Accounting PronouncementsIn March 2020, the FASB issued ASU 2020-04, “Reference Rate Reform: Facilitation of the Effects of Reference Rate Reform on Financial Reporting”. The amendments provide temporary, optional guidance to ease the potential burden in accounting for reference rate reform. The amendments provide optional expedients and exceptions for applying GAAP to transactions affected by reference rate reform if certain criteria are met. The amendments primarily include relief related to contract modifications and hedging relationships, as well as providing a one-time election for the sale or transfer of debt securities classified as held-to-maturity. This one time election may be made at any time after March 12, 2020, but no later than December 31, 2022. The Company is currently in the process of evaluating ASU 2020-04 to determine whether the Company will make this election and is currently assessing the significance of the impact of modifying contracts in consideration of the election of this amendment.