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Loans Receivable and Allowance for Loan Losses - Loans Held For Investment - Sales or Reclassification to Held for Sale (Details) (USD $) In Thousands, unless otherwise specified | 12 Months Ended
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Dec. 31, 2013 | Dec. 31, 2012
Loans Receivable Held-for-sale, Net, Reconciliation to Cash Flow [Roll Forward] |  |
Sales or reclassification to held for sale | $ 6,900 | $ 3,061
Real estate-Commercial |  |
Loans Receivable Held-for-sale, Net, Reconciliation to Cash Flow [Roll Forward] |  |
Sales or reclassification to held for sale | $ 6,900 | $ 3,061

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- Definition Financing Receivable, Sale Or Reclassification to Held For Sale + References No definition available. + Details
Name: | bbcn_FinancingReceivableSaleOrReclassificationToHeldForSale
Namespace Prefix: | bbcn_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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- Details
Name: | us-gaap_LoansReceivableHeldForSaleNetReconciliationToCashFlowRollForward
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration