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Acquisitions (Narrative) (Details) (USD $) | Dec. 31, 2011 | Oct. 14, 2011 Charter Bank [Member] branches | Dec. 16, 2011 Western National Bank [Member] branches | Dec. 31, 2011 Fair Value Adjustments [Member] | Dec. 16, 2011 Fair Value Adjustments [Member] Western National Bank [Member] | Dec. 31, 2011 Received from FDIC [Member] | Dec. 16, 2011 Received from FDIC [Member] Western National Bank [Member]
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Business Acquisition [Line Items] |  |  |  |  |  |  |
Number of branches acquired |  | 6 | 3 |  |  |  |
Deposits acquired |  | $ 254,000,000 | $ 136,000,000 |  |  |  |
Acquisition from FDIC, deposits assumed |  |  | 53,000,000 |  |  |  |
Assets acquired | 124,726,000 |  | 177,000,000 | (52,009,000) |  | 176,735,000 |
Loans acquired |  |  | 143,000,000 |  |  |  |
Foreclosed real estate acquired |  |  | 7,000,000 |  |  |  |
Liabilities assumed | 154,500,000 |  | 153,000,000 | 1,004,000 |  | 153,496,000 |
Cash received from the FDIC | 29,774,000 |  | 30,000,000 |  |  |  |
Net assets (liabilities) acquired | $ (29,774,000) |  |  | $ (53,013,000) | $ 53,000,000 | $ 23,239,000 | $ 23,000,000

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- Definition The amount of acquisition cost of a business combination allocated to assets acquired. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 141 -Paragraph 37 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. + Details
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- Definition The total purchase price of the acquired entity. This includes cash paid to equity interest holders of the acquired entity, fair value of debt and equity securities issued to equity holders of the acquired entity, and transaction costs paid to third parties to consummate the acquisition. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 141 -Paragraph 51 -Subparagraph d -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 141 -Paragraph 35 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. + Details
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