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Stock-Based Compensation - Plan Description (Details) | 12 Months Ended |
--- | --- | ---
Dec. 31, 2013 | Nov. 30, 2011
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |
Number of shares available for grant (in shares) | 2,716,054 |
Restricted stock, performance shares and performance units | Minimum |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |
Restricted stock, restriction period | 1 year |
Time based vesting of grants | Maximum |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |
Restricted stock, restriction period | 3 years |
BBCN 2007 Plan | Minimum |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |
Purchase price of common stock, percent (in hundredths) | 100.00% |
BBCN 2007 Plan | Stock options and stock appreciation rights |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |
Contractual term | 10 years |
BBCN 2007 Plan | Stock options and stock appreciation rights | Minimum |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |
Award vesting period minimum | 3 years |
BBCN 2007 Plan | Stock options and stock appreciation rights | Maximum |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |
Award vesting period minimum | 5 years |
2006 Plan | Minimum |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |
Purchase price of common stock, percent (in hundredths) | 100.00% |
Center Financial Corporation | 2006 Plan |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |
Outstanding options (in shares) |  | 585,860
Number of shares available for grant (in shares) |  | 2,443,513
Conversion factor of outstanding share awards and shares available for future grants |  | 0.7805
Annual vesting percent | 20.00% |
Center Financial Corporation | 2006 Plan | Nonemployee director |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |
Annual vesting percent | 33.33333% |
Option expiration duration | 10 years |

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- Definition Business Combination Shares Issued, Fractional Share Conversion Per One Share of Acquiror + References No definition available. + Details
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- Definition Share-based Compensation, Shares Authorized under Stock Option Plans, Exercisable Options, Contractual Term + References No definition available. + Details
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- Definition Period which an employee's right to exercise an award is no longer contingent on satisfaction of either a service condition, market condition or a performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition The difference between the maximum number of shares (or other type of equity) authorized for issuance under the plan (including the effects of amendments and adjustments), and the sum of: 1) the number of shares (or other type of equity) already issued upon exercise of options or other equity-based awards under the plan; and 2) shares (or other type of equity) reserved for issuance on granting of outstanding awards, net of cancellations and forfeitures, if applicable. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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