Basis of Presentation	9 Months Ended
Sep. 30, 2014
Basis Of Presentation [Abstract]
Basis of Presentation	Basis of Presentation The condensed 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 Condensed Consolidated Statement of Financial Condition as of December 31, 2013 which was derived from audited financial statements included in the Company's 2013 Annual Report on Form 10-K. Certain information and footnote disclosures normally included in consolidated 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 condensed consolidated financial statements include the accounts of BBCN Bancorp and its wholly-owned subsidiaries, principally BBCN Bank. All intercompany transactions and balances have been eliminated in consolidation. The Company has made all adjustments, consisting solely of normal recurring accruals, that in the opinion of management, are necessary to fairly present the Company's financial position at September 30, 2014 and the results of operations for the three and nine months then ended. 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 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 from those estimates. Material estimates that are susceptible to change in the near term relate to the determination of the allowance and provision for loan losses, the evaluation of other than temporary impairment of investment securities, accounting for derivatives and hedging activities, the determination of the carrying value for cash surrender value of life insurance, the determination of the carrying value of goodwill and other intangible assets, accounting for deferred tax assets and related valuation allowances, the determination of the fair values of investment securities and other financial instruments, accounting for lease arrangements, accounting for incentive compensation, profit sharing and bonus payments, and the valuation of servicing assets. These unaudited condensed consolidated financial statements should be read along with the audited consolidated financial statements and accompanying notes included in the Company's 2013 Annual Report on Form 10-K. Recent Accounting Pronouncements: FASB ASU No. 2013-11, Income Taxes (Topic 740): Presentation of an Unrecognized Tax Benefit When a Net Operating Loss Carryforward, a Similar Tax Loss, or a Tax Credit Carryforward Exists. The provisions of ASU No. 2013-11 require an entity to present an unrecognized tax benefit, or portion thereof, in the statement of financial position as a reduction to a deferred tax asset for a net operating loss carryforward or a tax credit carryforward, with certain exceptions related to availability. ASU No. 2013-11 is effective for interim and annual reporting periods beginning after December 15, 2013. The adoption of ASU No. 2013-11 did not have a material impact on the Company's consolidated financial statements. FASB ASU No. 2014-01, Investments—Equity Method and Joint Ventures (Topic 323): Accounting for Investments in Qualified Affordable Housing Projects. These amendments permit reporting entities to make an accounting policy election to account for their investments in qualified affordable housing projects using the proportional amortization method if certain conditions are met. Disclosures for a change in accounting principle are required upon transition. ASU 2014-01 is effective for for interim and annual periods beginning after December 15, 2014 and is not expected to have a significant impact on the Company's financial statements. FASB ASU No. 2014-04, Receivables—Troubled Debt Restructuring by Creditors (Subtopic 310-40): Reclassification of Residential Real Estate Collateralized Consumer Mortgage Loans Upon Foreclosure. The amendment intends to clarify the terms defining when an in substance foreclosure occurs, which determines when the receivable should be derecognized and the real estate property recognized. ASU No. 2014-04 will be effective for interim and annual periods beginning after December 31, 2014. ASU No. 2014-04 is not expected to have a material impact on the Company's consolidated financial statements. FASB ASU No. 2014-12, Compensation—Stock Compensation (Topic 718): Accounting for Share-Based Payments When the Terms of an Award Provide That a Performance Target Could Be Achieved after the Requisite Service Period. The amendments in ASU 2014-12 require that a performance target that affects vesting and that could be achieved after the requisite service period be treated as a performance condition. The performance target should not be reflected in estimating the grant-date fair value of the award. Compensation cost should be recognized in the period in which it becomes probable that the performance target will be achieved and should represent the compensation cost attributable to the period(s) for which the requisite service has already been rendered. If the performance target becomes probable of being achieved before the end of the requisite service period, the remaining unrecognized compensation cost should be recognized prospectively over the remaining requisite service period. The total amount of compensation cost recognized during and after the requisite service period should reflect the number of awards that are expected to vest and should be adjusted to reflect those awards that ultimately vest. The requisite service period ends when the employee can cease rendering service and still be eligible to vest in the award if the performance target is achieved. ASU 2014-12 is effective for interim and annual periods beginning after December 31, 2014 and is not expected to have a significant impact on the Company's financial statements. FASB ASU No. 2014-15, Presentation of Financial Statements—Going Concern (Subtopic 205-40): Disclosure of Uncertainties about an Entity's Ability to Continue as a Going Concern. The amendments in ASU 2014-15 defines management’s responsibility to evaluate whether there is substantial doubt about an organization’s ability to continue as a going concern and provide related disclosures. Currently, GAAP does not provide guidance to evaluate whether there is substantial doubt about the organization’s ability to continue as a going concern. Guidance is provided to an organization’s management, with principles and definitions to reduce diversity in the timing and content of disclosures commonly provided by organizations today in the financial statements footnotes. ASU 2014-15 is effective for interim and annual periods ending after December 15, 2016 and is not expected to have an impact on the Company's financial statements.

Basis of Presentation

The condensed 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 Condensed Consolidated Statement of Financial Condition as of December 31, 2013 which was derived from audited financial statements included in the Company's 2013 Annual Report on Form 10-K. Certain information and footnote disclosures normally included in consolidated 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 condensed consolidated financial statements include the accounts of BBCN Bancorp and its wholly-owned subsidiaries, principally BBCN Bank. All intercompany transactions and balances have been eliminated in consolidation.

The Company has made all adjustments, consisting solely of normal recurring accruals, that in the opinion of management, are necessary to fairly present the Company's financial position at September 30, 2014 and the results of operations for the three and nine months then ended. 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 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 from those estimates. Material estimates that are susceptible to change in the near term relate to the determination of the allowance and provision for loan losses, the evaluation of other than temporary impairment of investment securities, accounting for derivatives and hedging activities, the determination of the carrying value for cash surrender value of life insurance, the determination of the carrying value of goodwill and other intangible assets, accounting for deferred tax assets and related valuation allowances, the determination of the fair values of investment securities and other financial instruments, accounting for lease arrangements, accounting for incentive compensation, profit sharing and bonus payments, and the valuation of servicing assets.

These unaudited condensed consolidated financial statements should be read along with the audited consolidated financial statements and accompanying notes included in the Company's 2013 Annual Report on Form 10-K.

Recent Accounting Pronouncements:

FASB ASU No. 2013-11, Income Taxes (Topic 740): Presentation of an Unrecognized Tax Benefit When a Net Operating Loss Carryforward, a Similar Tax Loss, or a Tax Credit Carryforward Exists. The provisions of ASU No. 2013-11 require an entity to present an unrecognized tax benefit, or portion thereof, in the statement of financial position as a reduction to a deferred tax asset for a net operating loss carryforward or a tax credit carryforward, with certain exceptions related to availability. ASU No. 2013-11 is effective for interim and annual reporting periods beginning after December 15, 2013. The adoption of ASU No. 2013-11 did not have a material impact on the Company's consolidated financial statements.

FASB ASU No. 2014-01, Investments—Equity Method and Joint Ventures (Topic 323): Accounting for Investments in Qualified Affordable Housing Projects. These amendments permit reporting entities to make an accounting policy election to account for their investments in qualified affordable housing projects using the proportional amortization method if certain conditions are met. Disclosures for a change in accounting principle are required upon transition. ASU 2014-01 is effective for for interim and annual periods beginning after December 15, 2014 and is not expected to have a significant impact on the Company's financial statements.

FASB ASU No. 2014-04, Receivables—Troubled Debt Restructuring by Creditors (Subtopic 310-40): Reclassification of Residential Real Estate Collateralized Consumer Mortgage Loans Upon Foreclosure. The amendment intends to clarify the terms defining when an in substance foreclosure occurs, which determines when the receivable should be derecognized and the real estate property recognized. ASU No. 2014-04 will be effective for interim and annual periods beginning after December 31, 2014. ASU No. 2014-04 is not expected to have a material impact on the Company's consolidated financial statements.

FASB ASU No. 2014-12, Compensation—Stock Compensation (Topic 718): Accounting for Share-Based Payments When the Terms of an Award Provide That a Performance Target Could Be Achieved after the Requisite Service Period. The amendments in ASU 2014-12 require that a performance target that affects vesting and that could be achieved after the requisite service period be treated as a performance condition. The performance target should not be reflected in estimating the grant-date fair value of the award. Compensation cost should be recognized in the period in which it becomes probable that the performance target will be achieved and should represent the compensation cost attributable to the period(s) for which the requisite service has already been rendered. If the performance target becomes probable of being achieved before the end of the requisite service period, the remaining unrecognized compensation cost should be recognized prospectively over the remaining requisite service period. The total amount of compensation cost recognized during and after the requisite service period should reflect the number of awards that are expected to vest and should be adjusted to reflect those awards that ultimately vest. The requisite service period ends when the employee can cease rendering service and still be eligible to vest in the award if the performance target is achieved. ASU 2014-12 is effective for interim and annual periods beginning after December 31, 2014 and is not expected to have a significant impact on the Company's financial statements.

FASB ASU No. 2014-15, Presentation of Financial Statements—Going Concern (Subtopic 205-40): Disclosure of Uncertainties about an Entity's Ability to Continue as a Going Concern. The amendments in ASU 2014-15 defines management’s responsibility to evaluate whether there is substantial doubt about an organization’s ability to continue as a going concern and provide related disclosures. Currently, GAAP does not provide guidance to evaluate whether there is substantial doubt about the organization’s ability to continue as a going concern. Guidance is provided to an organization’s management, with principles and definitions to reduce diversity in the timing and content of disclosures commonly provided by organizations today in the financial statements footnotes. ASU 2014-15 is effective for interim and annual periods ending after December 15, 2016 and is not expected to have an impact on the Company's financial statements.