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Mergers and Acquisitions - Narrative (Details)	Jul. 29, 2016 shares
Wilshire Bancorp, Inc
Business Acquisition, Equity Interests Issued or Issuable [Line Items]
Common stock received for each share of Wilshire common stock	0.7034

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Business Combination, Consideration Transferred, Equity Interests Issued and Issuable, Entity Shares Issued Per Acquiree Share

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