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BUSINESS COMBINATIONS (Details) (USD $) | 12 Months Ended | 1 Months Ended | 6 Months Ended |  | 1 Months Ended | 12 Months Ended | 1 Months Ended
--- | --- | --- | --- | --- | --- | --- | ---
Dec. 31, 2011 | Jun. 30, 2010 Washington First International Bank (WFIB) | Dec. 31, 2010 Washington First International Bank (WFIB) | Jun. 11, 2010 Washington First International Bank (WFIB) | Jun. 30, 2010 Washington First International Bank (WFIB) Commercial mortgage loans Y | Jun. 30, 2010 Washington First International Bank (WFIB) Single-family residential mortgage loans Y | Jun. 30, 2010 Washington First International Bank (WFIB) Maximum D Y | Nov. 30, 2009 United Commercial Bank (UCB) | Dec. 31, 2010 United Commercial Bank (UCB) | Nov. 30, 2009 United Commercial Bank (UCB) Commercial mortgage loans Y | Nov. 30, 2009 United Commercial Bank (UCB) Single-family residential mortgage loans Y | Nov. 30, 2009 United Commercial Bank (UCB) Maximum D
Business Combinations |  |  |  |  |  |  |  |  |  |  |  |
Period of accrued interest on loans that will be covered by FDIC under shared loss agreements (in days) |  |  |  |  |  |  | 90 |  |  |  |  | 90
Percentage of losses absorbed by FDIC under shared loss agreements | 80.00% | 80.00% |  |  |  |  |  | 80.00% |  |  |  |
Percentage of loss recoveries shared by FDIC under shared loss agreements |  | 80.00% |  |  |  |  |  | 80.00% |  |  |  |
Threshold amount of losses absorbed by FDIC under shared loss agreements |  |  |  |  |  |  |  | $ 2,050,000,000 |  |  |  |
Period for which shared-loss agreements are in effect (in years) |  |  |  |  | 5 | 10 |  |  |  | 5 | 10 |
Period for which loss recovery provisions are in effect (in years) |  |  |  |  | 8 | 10 |  |  |  | 8 | 10 |
Cash received from FDIC |  | 51,700,000 |  |  |  |  |  |  |  |  |  |
Fair value of assets acquired |  |  |  | 492,600,000 |  |  |  | 9,860,000,000 |  |  |  |
Percentage of losses absorbed by FDIC under shared loss agreements exceeding $2.05 billion |  |  |  |  |  |  |  | 95.00% |  |  |  |
Percentage of loss recoveries shared by FDIC under shared loss agreements exceeding $2.05 billion |  |  |  |  |  |  |  | 95.00% |  |  |  |
Book value of assets transferred to the bank |  |  |  | 486,300,000 |  |  |  |  |  |  |  |
Pre-tax bargain purchase gain |  | 19,500,000 | 1,600,000 |  |  |  |  | 471,000,000 | 5,000,000 |  |  |
After-tax bargain purchase gain |  | $ 11,300,000 |  |  |  |  |  |  |  |  |  |
Measurement period (in years) |  |  |  |  |  |  | 1 |  |  |  |  |

X
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- Definition Represents the measurement period during which the entity is allowed to recognize additional assets and liabilities related to an acquisition if new information is obtained about facts and circumstances that existed as of the acquisition date which, if known, would have resulted in the recognition of those assets and liabilities as of that date. + References No definition available. + Details
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- Definition In a business combination in which the amount of net identifiable assets acquired and liabilities assumed exceeds the aggregate consideration transferred or to be transferred (as defined), this element represents the amount of after-tax gain recognized by the entity. + References No definition available. + Details
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- Definition The threshold amount of future losses on the OREO that the FDIC will absorb under the shared-loss agreements. + References No definition available. + Details
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