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Covered Assets Aging Analysis of Non-Credit Impaired Loans (Details) (USD $) In Thousands, unless otherwise specified | Sep. 30, 2011 | Sep. 30, 2010
--- | --- | ---
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Outstanding principal balance of acquired loans | $ 491,592 | $ 685,384
Single Family Residential [Member] | Acquired Non Impaired Assets [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Outstanding principal balance of acquired loans | 46,214 |
Loans and Leases Receivable, Covered Loans, Current | 43,445 |
Loans and Leases Receivable, Covered Loans, 30 Days | 1,034 |
Loans and Leases Receivable, Covered Loans, 60 Days | 30 |
Loans and Leases Receivable, Covered Assets, 90 Days | 1,705 |
Loans and Leases Receivable, Covered Assets, Past Due | 2,769 |
Loans and Leases Receivable, Covered Loans, Ratio of Total Past Due Loans to Total Loans Receivable, Net of Charge Offs and Loans in Process | 5.99% |
Construction, Speculative [Member] | Acquired Non Impaired Assets [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Outstanding principal balance of acquired loans | 1,315 |
Loans and Leases Receivable, Covered Loans, Current | 1,315 |
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 |
Construction, Custom [Member] | Acquired Non Impaired Assets [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 |
Land, Acquisition and Development [Member] | Acquired Non Impaired Assets [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Outstanding principal balance of acquired loans | 15,058 |
Loans and Leases Receivable, Covered Loans, Current | 13,344 |
Loans and Leases Receivable, Covered Loans, 30 Days | 487 |
Loans and Leases Receivable, Covered Loans, 60 Days | 0 |
Loans and Leases Receivable, Covered Assets, 90 Days | 1,227 |
Loans and Leases Receivable, Covered Assets, Past Due | 1,714 |
Loans and Leases Receivable, Covered Loans, Ratio of Total Past Due Loans to Total Loans Receivable, Net of Charge Offs and Loans in Process | 11.38% |
Land, Consumer Lot Loans [Member] | Acquired Non Impaired Assets [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Outstanding principal balance of acquired loans | 654 |
Loans and Leases Receivable, Covered Loans, Current | 527 |
Loans and Leases Receivable, Covered Loans, 30 Days | 16 |
Loans and Leases Receivable, Covered Loans, 60 Days | 0 |
Loans and Leases Receivable, Covered Assets, 90 Days | 111 |
Loans and Leases Receivable, Covered Assets, Past Due | 127 |
Loans and Leases Receivable, Covered Loans, Ratio of Total Past Due Loans to Total Loans Receivable, Net of Charge Offs and Loans in Process | 19.42% |
Multi Family Housing [Member] | Acquired Non Impaired Assets [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Outstanding principal balance of acquired loans | 34,906 |
Loans and Leases Receivable, Covered Loans, Current | 33,398 |
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 | 4.32% |
Commercial Real Estate Portfolio Segment [Member] | Acquired Non Impaired Assets [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Outstanding principal balance of acquired loans | 148,464 |
Loans and Leases Receivable, Covered Loans, Current | 142,060 |
Loans and Leases Receivable, Covered Loans, 30 Days | 1,527 |
Loans and Leases Receivable, Covered Loans, 60 Days | 0 |
Loans and Leases Receivable, Covered Assets, 90 Days | 4,877 |
Loans and Leases Receivable, Covered Assets, Past Due | 6,404 |
Loans and Leases Receivable, Covered Loans, Ratio of Total Past Due Loans to Total Loans Receivable, Net of Charge Offs and Loans in Process | 4.31% |
Commercial and Industrial Loans [Member] | Acquired Non Impaired Assets [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Outstanding principal balance of acquired loans | 22,881 |
Loans and Leases Receivable, Covered Loans, Current | 18,049 |
Loans and Leases Receivable, Covered Loans, 30 Days | 3,606 |
Loans and Leases Receivable, Covered Loans, 60 Days | 703 |
Loans and Leases Receivable, Covered Assets, 90 Days | 523 |
Loans and Leases Receivable, Covered Assets, Past Due | 4,832 |
Loans and Leases Receivable, Covered Loans, Ratio of Total Past Due Loans to Total Loans Receivable, Net of Charge Offs and Loans in Process | 21.12% |
Home Equity Line of Credit [Member] | Acquired Non Impaired Assets [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Outstanding principal balance of acquired loans | 21,730 |
Loans and Leases Receivable, Covered Loans, Current | 20,339 |
Loans and Leases Receivable, Covered Loans, 30 Days | 731 |
Loans and Leases Receivable, Covered Loans, 60 Days | 391 |
Loans and Leases Receivable, Covered Assets, 90 Days | 269 |
Loans and Leases Receivable, Covered Assets, Past Due | 1,391 |
Loans and Leases Receivable, Covered Loans, Ratio of Total Past Due Loans to Total Loans Receivable, Net of Charge Offs and Loans in Process | 6.40% |
Consumer Portfolio Segment [Member] | Acquired Non Impaired Assets [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Outstanding principal balance of acquired loans | 1,199 |
Loans and Leases Receivable, Covered Loans, Current | 1,123 |
Loans and Leases Receivable, Covered Loans, 30 Days | 31 |
Loans and Leases Receivable, Covered Loans, 60 Days | 8 |
Loans and Leases Receivable, Covered Assets, 90 Days | 37 |
Loans and Leases Receivable, Covered Assets, Past Due | 76 |
Loans and Leases Receivable, Covered Loans, Ratio of Total Past Due Loans to Total Loans Receivable, Net of Charge Offs and Loans in Process | 6.34% |
Acquired Non Impaired Assets [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Outstanding principal balance of acquired loans | 292,421 | 378,552
Loans and Leases Receivable, Covered Loans, Current | 273,600 |
Loans and Leases Receivable, Covered Loans, 30 Days | 7,432 |
Loans and Leases Receivable, Covered Loans, 60 Days | 1,132 |
Loans and Leases Receivable, Covered Assets, 90 Days | 10,257 |
Loans and Leases Receivable, Covered Assets, Past Due | $ 18,821 |
Loans and Leases Receivable, Covered Loans, Ratio of Total Past Due Loans to Total Loans Receivable, Net of Charge Offs and Loans in Process | 6.44% |

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