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Covered Assets (Aging Analysis of Non-Credit Impaired Loans) (Details) (Acquired Non Impaired Assets [Member], USD $) In Thousands, unless otherwise specified | Dec. 31, 2012 | Sep. 30, 2012
--- | --- | ---
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Outstanding principal balance of acquired loans | $ 211,779 | $ 228,843
Loans and Leases Receivable, Covered Loans, Current | 199,695 | 212,210
Loans and Leases Receivable, Covered Loans, 30 Days | 841 | 2,189
Loans and Leases Receivable, Covered Loans, 60 Days | 37 | 4,567
Loans and Leases Receivable, Covered Assets, 90 Days | 11,206 | 9,877
Loans and Leases Receivable, Covered Assets, Past Due | 12,084 | 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 | 5.71% | 7.27%
Single Family Residential [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Outstanding principal balance of acquired loans | 34,645 | 35,676
Loans and Leases Receivable, Covered Loans, Current | 31,887 | 32,601
Loans and Leases Receivable, Covered Loans, 30 Days | 50 | 2,075
Loans and Leases Receivable, Covered Loans, 60 Days | 0 | 0
Loans and Leases Receivable, Covered Assets, 90 Days | 2,708 | 1,000
Loans and Leases Receivable, Covered Assets, Past Due | 2,758 | 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 | 7.96% | 8.62%
Construction, Speculative [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Outstanding principal balance of acquired loans | 102 | 90
Loans and Leases Receivable, Covered Loans, Current | 102 | 90
Loans and Leases Receivable, Covered Loans, 30 Days | 0 | 0
Loans and Leases Receivable, Covered Loans, 60 Days | 0 | 0
Loans and Leases Receivable, Covered Assets, 90 Days | 0 | 0
Loans and Leases Receivable, Covered Assets, Past Due | 0 | 0
Construction, Custom [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Outstanding principal balance of acquired loans | 0 | 0
Loans and Leases Receivable, Covered Loans, Current | 0 | 0
Loans and Leases Receivable, Covered Loans, 30 Days | 0 | 0
Loans and Leases Receivable, Covered Loans, 60 Days | 0 | 0
Loans and Leases Receivable, Covered Assets, 90 Days | 0 | 0
Loans and Leases Receivable, Covered Assets, Past Due | 0 | 0
Land, Acquisition and Development [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Outstanding principal balance of acquired loans | 10,868 | 11,430
Loans and Leases Receivable, Covered Loans, Current | 9,495 | 9,922
Loans and Leases Receivable, Covered Loans, 30 Days | 0 | 0
Loans and Leases Receivable, Covered Loans, 60 Days | 36 | 0
Loans and Leases Receivable, Covered Assets, 90 Days | 1,337 | 1,508
Loans and Leases Receivable, Covered Assets, Past Due | 1,373 | 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 | 12.63% | 13.19%
Land, Consumer Lot Loans [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Outstanding principal balance of acquired loans | 443 | 498
Loans and Leases Receivable, Covered Loans, Current | 345 | 385
Loans and Leases Receivable, Covered Loans, 30 Days | 0 | 0
Loans and Leases Receivable, Covered Loans, 60 Days | 0 | 0
Loans and Leases Receivable, Covered Assets, 90 Days | 98 | 113
Loans and Leases Receivable, Covered Assets, Past Due | 98 | 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 | 22.12% | 22.69%
Multi Family Housing [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Outstanding principal balance of acquired loans | 26,642 | 27,645
Loans and Leases Receivable, Covered Loans, Current | 24,934 | 26,137
Loans and Leases Receivable, Covered Loans, 30 Days | 200 | 0
Loans and Leases Receivable, Covered Loans, 60 Days | 0 | 0
Loans and Leases Receivable, Covered Assets, 90 Days | 1,508 | 1,508
Loans and Leases Receivable, Covered Assets, Past Due | 1,708 | 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 | 6.41% | 5.45%
Commercial Real Estate Portfolio Segment [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Outstanding principal balance of acquired loans | 109,792 | 121,592
Loans and Leases Receivable, Covered Loans, Current | 107,753 | 115,206
Loans and Leases Receivable, Covered Loans, 30 Days | 192 | 17
Loans and Leases Receivable, Covered Loans, 60 Days | 0 | 4,447
Loans and Leases Receivable, Covered Assets, 90 Days | 1,847 | 1,922
Loans and Leases Receivable, Covered Assets, Past Due | 2,039 | 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 | 1.86% | 5.25%
Commercial and Industrial Loans [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Outstanding principal balance of acquired loans | 12,010 | 13,023
Loans and Leases Receivable, Covered Loans, Current | 8,213 | 9,513
Loans and Leases Receivable, Covered Loans, 30 Days | 369 | 0
Loans and Leases Receivable, Covered Loans, 60 Days | 0 | 69
Loans and Leases Receivable, Covered Assets, 90 Days | 3,428 | 3,441
Loans and Leases Receivable, Covered Assets, Past Due | 3,797 | 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 | 31.62% | 26.95%
Home Equity Line of Credit [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Outstanding principal balance of acquired loans | 16,556 | 17,971
Loans and Leases Receivable, Covered Loans, Current | 16,247 | 17,440
Loans and Leases Receivable, Covered Loans, 30 Days | 29 | 97
Loans and Leases Receivable, Covered Loans, 60 Days | 0 | 50
Loans and Leases Receivable, Covered Assets, 90 Days | 280 | 384
Loans and Leases Receivable, Covered Assets, Past Due | 309 | 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 | 1.87% | 2.95%
Consumer Portfolio Segment [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Outstanding principal balance of acquired loans | 721 | 918
Loans and Leases Receivable, Covered Loans, Current | 719 | 916
Loans and Leases Receivable, Covered Loans, 30 Days | 1 | 0
Loans and Leases Receivable, Covered Loans, 60 Days | 1 | 1
Loans and Leases Receivable, Covered Assets, 90 Days | 0 | 1
Loans and Leases Receivable, Covered Assets, Past Due | $ 2 | $ 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 | 0.28% | 2.20%

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