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    <Log type="Info">Element us-gaap_LoansReceivableHeldForSaleNet had a mix of decimals attribute values: -5 -3.</Log>
    <Log type="Info">'Monetary' elements on report '0015 - Statement - CONSOLIDATED STATEMENTS OF FINANCIAL CONDITION (Parenthetical)' had a mix of different decimal attribute values.</Log>
    <Log type="Info">'Monetary' elements on report '4030 - Disclosure - Recent Acquisitions (Details)' had a mix of different decimal attribute values.</Log>
    <Log type="Info">'Monetary' elements on report '4050 - Disclosure - Investment Securities (Details)' had a mix of different decimal attribute values.</Log>
    <Log type="Info">'Monetary' elements on report '4060 - Disclosure - Loans (Details)' had a mix of different decimal attribute values.</Log>
    <Log type="Info">'Monetary' elements on report '4062 - Disclosure - Loans (Details 3)' had a mix of different decimal attribute values.</Log>
    <Log type="Info">'Monetary' elements on report '4064 - Disclosure - Loans (Details 5)' had a mix of different decimal attribute values.</Log>
    <Log type="Info">'Monetary' elements on report '4065 - Disclosure - Loans (Details 6)' had a mix of different decimal attribute values.</Log>
    <Log type="Info">'Monetary' elements on report '4068 - Disclosure - Loans (Details 9)' had a mix of different decimal attribute values.</Log>
    <Log type="Info">'Monetary' elements on report '4070 - Disclosure - Shareholders' Equity (Details)' had a mix of different decimal attribute values.</Log>
    <Log type="Info">'Monetary' elements on report '4080 - Disclosure - FHLB Advances and Junior Subordinated Debentures (Details)' had a mix of different decimal attribute values.</Log>
    <Log type="Info">'Monetary' elements on report '4081 - Disclosure - FHLB Advances and Junior Subordinated Debentures (Details 2)' had a mix of different decimal attribute values.</Log>
    <Log type="Info">'Monetary' elements on report '4120 - Disclosure - Income Tax Provision (Details)' had a mix of different decimal attribute values.</Log>
    <Log type="Info">Process Flow-Through: 0010 - Statement - CONSOLIDATED STATEMENTS OF FINANCIAL CONDITION</Log>
    <Log type="Info">	Process Flow-Through: Removing column 'Dec. 31, 2012'</Log>
    <Log type="Info">Process Flow-Through: 0015 - Statement - CONSOLIDATED STATEMENTS OF FINANCIAL CONDITION (Parenthetical)</Log>
    <Log type="Info">	Process Flow-Through: Removing column 'Sep. 30, 2013'</Log>
    <Log type="Info">	Process Flow-Through: Removing column 'Mar. 31, 2013'</Log>
    <Log type="Info">	Process Flow-Through: Removing column 'Dec. 31, 2012'</Log>
    <Log type="Info">Process Flow-Through: 0020 - Statement - CONSOLIDATED STATEMENTS OF OPERATIONS</Log>
    <Log type="Info">Process Flow-Through: 0030 - Statement - CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME</Log>
    <Log type="Info">Process Flow-Through: 0045 - Statement - CONSOLIDATED STATEMENTS OF SHAREHOLDERS' EQUITY (Parenthetical)</Log>
    <Log type="Info">Process Flow-Through: 0050 - Statement - CONSOLIDATED STATEMENTS OF CASH FLOWS</Log>
  </Logs>
  <InputFiles>
    <File>wibc-20140331.xml</File>
    <File>wibc-20140331.xsd</File>
    <File>wibc-20140331_cal.xml</File>
    <File>wibc-20140331_def.xml</File>
    <File>wibc-20140331_lab.xml</File>
    <File>wibc-20140331_pre.xml</File>
  </InputFiles>
  <SupplementalFiles />
  <BaseTaxonomies />
  <HasPresentationLinkbase>true</HasPresentationLinkbase>
  <HasCalculationLinkbase>true</HasCalculationLinkbase>
</FilingSummary>
