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Covered Assets Aging Analysis of Non-Credit Impaired Loans (Details) (USD $) In Thousands, unless otherwise specified | Sep. 30, 2012 | Sep. 30, 2011
--- | --- | ---
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Outstanding principal balance of acquired loans | $ 373,455 | $ 491,592
Acquired Non Impaired Assets [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Outstanding principal balance of acquired loans | 228,843 | 292,421
Loans and Leases Receivable, Covered Loans, Current | 212,210 |
Loans and Leases Receivable, Covered Loans, 30 Days | 2,189 |
Loans and Leases Receivable, Covered Loans, 60 Days | 4,567 |
Loans and Leases Receivable, Covered Assets, 90 Days | 9,877 |
Loans and Leases Receivable, Covered Assets, Past Due | 16,633 |
Loans and Leases Receivable, Covered Loans, Ratio of Total Past Due Loans to Total Loans Receivable, Net of Charge Offs and Loans in Process | 7.27% |
Acquired Non Impaired Assets [Member] | Single Family Residential [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Outstanding principal balance of acquired loans | 35,676 |
Loans and Leases Receivable, Covered Loans, Current | 32,601 |
Loans and Leases Receivable, Covered Loans, 30 Days | 2,075 |
Loans and Leases Receivable, Covered Loans, 60 Days | 0 |
Loans and Leases Receivable, Covered Assets, 90 Days | 1,000 |
Loans and Leases Receivable, Covered Assets, Past Due | 3,075 |
Loans and Leases Receivable, Covered Loans, Ratio of Total Past Due Loans to Total Loans Receivable, Net of Charge Offs and Loans in Process | 8.62% |
Acquired Non Impaired Assets [Member] | Construction, Speculative [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Outstanding principal balance of acquired loans | 90 |
Loans and Leases Receivable, Covered Loans, Current | 90 |
Loans and Leases Receivable, Covered Loans, 30 Days | 0 |
Loans and Leases Receivable, Covered Loans, 60 Days | 0 |
Loans and Leases Receivable, Covered Assets, 90 Days | 0 |
Loans and Leases Receivable, Covered Assets, Past Due | 0 |
Acquired Non Impaired Assets [Member] | Construction, Custom [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Outstanding principal balance of acquired loans | 0 |
Loans and Leases Receivable, Covered Loans, Current | 0 |
Loans and Leases Receivable, Covered Loans, 30 Days | 0 |
Loans and Leases Receivable, Covered Loans, 60 Days | 0 |
Loans and Leases Receivable, Covered Assets, 90 Days | 0 |
Loans and Leases Receivable, Covered Assets, Past Due | 0 |
Acquired Non Impaired Assets [Member] | Land, Acquisition and Development [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Outstanding principal balance of acquired loans | 11,430 |
Loans and Leases Receivable, Covered Loans, Current | 9,922 |
Loans and Leases Receivable, Covered Loans, 30 Days | 0 |
Loans and Leases Receivable, Covered Loans, 60 Days | 0 |
Loans and Leases Receivable, Covered Assets, 90 Days | 1,508 |
Loans and Leases Receivable, Covered Assets, Past Due | 1,508 |
Loans and Leases Receivable, Covered Loans, Ratio of Total Past Due Loans to Total Loans Receivable, Net of Charge Offs and Loans in Process | 13.19% |
Acquired Non Impaired Assets [Member] | Land, Consumer Lot Loans [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Outstanding principal balance of acquired loans | 498 |
Loans and Leases Receivable, Covered Loans, Current | 385 |
Loans and Leases Receivable, Covered Loans, 30 Days | 0 |
Loans and Leases Receivable, Covered Loans, 60 Days | 0 |
Loans and Leases Receivable, Covered Assets, 90 Days | 113 |
Loans and Leases Receivable, Covered Assets, Past Due | 113 |
Loans and Leases Receivable, Covered Loans, Ratio of Total Past Due Loans to Total Loans Receivable, Net of Charge Offs and Loans in Process | 22.69% |
Acquired Non Impaired Assets [Member] | Multi Family Housing [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Outstanding principal balance of acquired loans | 27,645 |
Loans and Leases Receivable, Covered Loans, Current | 26,137 |
Loans and Leases Receivable, Covered Loans, 30 Days | 0 |
Loans and Leases Receivable, Covered Loans, 60 Days | 0 |
Loans and Leases Receivable, Covered Assets, 90 Days | 1,508 |
Loans and Leases Receivable, Covered Assets, Past Due | 1,508 |
Loans and Leases Receivable, Covered Loans, Ratio of Total Past Due Loans to Total Loans Receivable, Net of Charge Offs and Loans in Process | 5.45% |
Acquired Non Impaired Assets [Member] | Commercial Real Estate Portfolio Segment [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Outstanding principal balance of acquired loans | 121,592 |
Loans and Leases Receivable, Covered Loans, Current | 115,206 |
Loans and Leases Receivable, Covered Loans, 30 Days | 17 |
Loans and Leases Receivable, Covered Loans, 60 Days | 4,447 |
Loans and Leases Receivable, Covered Assets, 90 Days | 1,922 |
Loans and Leases Receivable, Covered Assets, Past Due | 6,386 |
Loans and Leases Receivable, Covered Loans, Ratio of Total Past Due Loans to Total Loans Receivable, Net of Charge Offs and Loans in Process | 5.25% |
Acquired Non Impaired Assets [Member] | Commercial and Industrial Loans [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Outstanding principal balance of acquired loans | 13,023 |
Loans and Leases Receivable, Covered Loans, Current | 9,513 |
Loans and Leases Receivable, Covered Loans, 30 Days | 0 |
Loans and Leases Receivable, Covered Loans, 60 Days | 69 |
Loans and Leases Receivable, Covered Assets, 90 Days | 3,441 |
Loans and Leases Receivable, Covered Assets, Past Due | 3,510 |
Loans and Leases Receivable, Covered Loans, Ratio of Total Past Due Loans to Total Loans Receivable, Net of Charge Offs and Loans in Process | 26.95% |
Acquired Non Impaired Assets [Member] | Home Equity Line of Credit [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Outstanding principal balance of acquired loans | 17,971 |
Loans and Leases Receivable, Covered Loans, Current | 17,440 |
Loans and Leases Receivable, Covered Loans, 30 Days | 97 |
Loans and Leases Receivable, Covered Loans, 60 Days | 50 |
Loans and Leases Receivable, Covered Assets, 90 Days | 384 |
Loans and Leases Receivable, Covered Assets, Past Due | 531 |
Loans and Leases Receivable, Covered Loans, Ratio of Total Past Due Loans to Total Loans Receivable, Net of Charge Offs and Loans in Process | 2.95% |
Acquired Non Impaired Assets [Member] | Consumer Portfolio Segment [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Outstanding principal balance of acquired loans | 918 |
Loans and Leases Receivable, Covered Loans, Current | 916 |
Loans and Leases Receivable, Covered Loans, 30 Days | 0 |
Loans and Leases Receivable, Covered Loans, 60 Days | 1 |
Loans and Leases Receivable, Covered Assets, 90 Days | 1 |
Loans and Leases Receivable, Covered Assets, Past Due | $ 2 |
Loans and Leases Receivable, Covered Loans, Ratio of Total Past Due Loans to Total Loans Receivable, Net of Charge Offs and Loans in Process | 0.22% |

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