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Covered Assets (Credit Risk Profile by Internally Assigned Grade by Loan Status Designation) (Details) (USD $) In Thousands, unless otherwise specified | Jun. 30, 2013 | Sep. 30, 2012
--- | --- | ---
Covered Assets, Loan Status Designation [Line Items] |  |
Loans and Leases Receivable, Covered Loans, Gross | $ 383,825 | $ 373,455
Discount balance related to acquired loans | (73,447) | (85,079)
Covered loans, allowance for losses | 0 | 0
Loans and Leases Receivable, Covered Loans, Net Reported Amount | 310,378 | 288,376
Acquired Non Impaired Assets [Member] |  |
Covered Assets, Loan Status Designation [Line Items] |  |
Outstanding principal balance of acquired loans | 174,500 | 228,843
Acquired Impaired Assets [Member] |  |
Covered Assets, Loan Status Designation [Line Items] |  |
Outstanding principal balance of acquired loans | 209,325 | 144,612
Single Family Residential [Member] | Acquired Non Impaired Assets [Member] |  |
Covered Assets, Loan Status Designation [Line Items] |  |
Outstanding principal balance of acquired loans | 32,021 | 35,676
Single Family Residential [Member] | Acquired Impaired Assets [Member] |  |
Covered Assets, Loan Status Designation [Line Items] |  |
Outstanding principal balance of acquired loans | 22,538 | 3,622
Construction - Speculative [Member] | Acquired Non Impaired Assets [Member] |  |
Covered Assets, Loan Status Designation [Line Items] |  |
Outstanding principal balance of acquired loans | 104 | 90
Construction - Custom [Member] | Acquired Non Impaired Assets [Member] |  |
Covered Assets, Loan Status Designation [Line Items] |  |
Outstanding principal balance of acquired loans | 0 | 0
Land - Acquisition & Development [Member] | Acquired Non Impaired Assets [Member] |  |
Covered Assets, Loan Status Designation [Line Items] |  |
Outstanding principal balance of acquired loans | 5,011 | 11,430
Land - Consumer Lot Loans [Member] | Acquired Non Impaired Assets [Member] |  |
Covered Assets, Loan Status Designation [Line Items] |  |
Outstanding principal balance of acquired loans | 247 | 498
Multi-Family [Member] | Acquired Non Impaired Assets [Member] |  |
Covered Assets, Loan Status Designation [Line Items] |  |
Outstanding principal balance of acquired loans | 19,320 | 27,645
Multi-Family [Member] | Acquired Impaired Assets [Member] |  |
Covered Assets, Loan Status Designation [Line Items] |  |
Outstanding principal balance of acquired loans | 5,735 | 2,996
Commercial Real Estate [Member] | Acquired Non Impaired Assets [Member] |  |
Covered Assets, Loan Status Designation [Line Items] |  |
Outstanding principal balance of acquired loans | 91,976 | 121,592
Commercial Real Estate [Member] | Acquired Impaired Assets [Member] |  |
Covered Assets, Loan Status Designation [Line Items] |  |
Outstanding principal balance of acquired loans | 111,088 | 67,592
Commercial & Industrial [Member] | Acquired Non Impaired Assets [Member] |  |
Covered Assets, Loan Status Designation [Line Items] |  |
Outstanding principal balance of acquired loans | 9,673 | 13,023
Commercial & Industrial [Member] | Acquired Impaired Assets [Member] |  |
Covered Assets, Loan Status Designation [Line Items] |  |
Outstanding principal balance of acquired loans | 17,529 | 15,259
HELOC [Member] | Acquired Non Impaired Assets [Member] |  |
Covered Assets, Loan Status Designation [Line Items] |  |
Outstanding principal balance of acquired loans | 15,508 | 17,971
Consumer [Member] | Acquired Non Impaired Assets [Member] |  |
Covered Assets, Loan Status Designation [Line Items] |  |
Outstanding principal balance of acquired loans | 640 | 918
Construction, Speculative and Land, Acquisition and Development [Member] | Acquired Impaired Assets [Member] |  |
Covered Assets, Loan Status Designation [Line Items] |  |
Outstanding principal balance of acquired loans | 46,070 | 50,953
HELOC & Other Consumer [Member] | Acquired Impaired Assets [Member] |  |
Covered Assets, Loan Status Designation [Line Items] |  |
Outstanding principal balance of acquired loans | 6,365 | 4,190
Pass [Member] |  |
Covered Assets, Loan Status Designation [Line Items] |  |
Grade as percentage of total gross loans | 95.10% | 94.90%
Pass [Member] | Acquired Non Impaired Assets [Member] |  |
Covered Assets, Loan Status Designation [Line Items] |  |
Outstanding principal balance of acquired loans | 136,163 | 176,763
Grade as percentage of total gross loans | 78.00% | 77.30%
Pass [Member] | Acquired Impaired Assets [Member] |  |
Covered Assets, Loan Status Designation [Line Items] |  |
Outstanding principal balance of acquired loans | 86,673 | 15,749
Pass [Member] | Single Family Residential [Member] | Acquired Non Impaired Assets [Member] |  |
Covered Assets, Loan Status Designation [Line Items] |  |
Outstanding principal balance of acquired loans | 29,323 | 32,272
Pass [Member] | Single Family Residential [Member] | Acquired Impaired Assets [Member] |  |
Covered Assets, Loan Status Designation [Line Items] |  |
Outstanding principal balance of acquired loans | 22,198 | 669
Pass [Member] | Construction - Speculative [Member] | Acquired Non Impaired Assets [Member] |  |
Covered Assets, Loan Status Designation [Line Items] |  |
Outstanding principal balance of acquired loans | 104 | 90
Pass [Member] | Construction - Custom [Member] | Acquired Non Impaired Assets [Member] |  |
Covered Assets, Loan Status Designation [Line Items] |  |
Outstanding principal balance of acquired loans | 0 | 0
Pass [Member] | Land - Acquisition & Development [Member] | Acquired Non Impaired Assets [Member] |  |
Covered Assets, Loan Status Designation [Line Items] |  |
Outstanding principal balance of acquired loans | 2,780 | 3,440
Pass [Member] | Land - Consumer Lot Loans [Member] | Acquired Non Impaired Assets [Member] |  |
Covered Assets, Loan Status Designation [Line Items] |  |
Outstanding principal balance of acquired loans | 247 | 498
Pass [Member] | Multi-Family [Member] | Acquired Non Impaired Assets [Member] |  |
Covered Assets, Loan Status Designation [Line Items] |  |
Outstanding principal balance of acquired loans | 19,026 | 24,898
Pass [Member] | Multi-Family [Member] | Acquired Impaired Assets [Member] |  |
Covered Assets, Loan Status Designation [Line Items] |  |
Outstanding principal balance of acquired loans | 1,239 | 0
Pass [Member] | Commercial Real Estate [Member] | Acquired Non Impaired Assets [Member] |  |
Covered Assets, Loan Status Designation [Line Items] |  |
Outstanding principal balance of acquired loans | 62,600 | 89,530
Pass [Member] | Commercial Real Estate [Member] | Acquired Impaired Assets [Member] |  |
Covered Assets, Loan Status Designation [Line Items] |  |
Outstanding principal balance of acquired loans | 37,083 | 404
Pass [Member] | Commercial & Industrial [Member] | Acquired Non Impaired Assets [Member] |  |
Covered Assets, Loan Status Designation [Line Items] |  |
Outstanding principal balance of acquired loans | 5,935 | 7,146
Pass [Member] | Commercial & Industrial [Member] | Acquired Impaired Assets [Member] |  |
Covered Assets, Loan Status Designation [Line Items] |  |
Outstanding principal balance of acquired loans | 7,004 | 3,787
Pass [Member] | HELOC [Member] | Acquired Non Impaired Assets [Member] |  |
Covered Assets, Loan Status Designation [Line Items] |  |
Outstanding principal balance of acquired loans | 15,508 | 17,971
Pass [Member] | Consumer [Member] | Acquired Non Impaired Assets [Member] |  |
Covered Assets, Loan Status Designation [Line Items] |  |
Outstanding principal balance of acquired loans | 640 | 918
Pass [Member] | Construction, Speculative and Land, Acquisition and Development [Member] | Acquired Impaired Assets [Member] |  |
Covered Assets, Loan Status Designation [Line Items] |  |
Outstanding principal balance of acquired loans | 14,818 | 9,795
Pass [Member] | HELOC & Other Consumer [Member] | Acquired Impaired Assets [Member] |  |
Covered Assets, Loan Status Designation [Line Items] |  |
Outstanding principal balance of acquired loans | 4,331 | 1,094
Special Mention [Member] |  |
Covered Assets, Loan Status Designation [Line Items] |  |
Grade as percentage of total gross loans | 0.40% | 0.60%
Special Mention [Member] | Acquired Non Impaired Assets [Member] |  |
Covered Assets, Loan Status Designation [Line Items] |  |
Outstanding principal balance of acquired loans | 11,101 | 2,778
Grade as percentage of total gross loans | 6.40% | 1.20%
Special Mention [Member] | Acquired Impaired Assets [Member] |  |
Covered Assets, Loan Status Designation [Line Items] |  |
Outstanding principal balance of acquired loans | 19,731 | 32,092
Special Mention [Member] | Single Family Residential [Member] | Acquired Non Impaired Assets [Member] |  |
Covered Assets, Loan Status Designation [Line Items] |  |
Outstanding principal balance of acquired loans | 0 | 0
Special Mention [Member] | Single Family Residential [Member] | Acquired Impaired Assets [Member] |  |
Covered Assets, Loan Status Designation [Line Items] |  |
Outstanding principal balance of acquired loans | 0 | 0
Special Mention [Member] | Construction - Speculative [Member] | Acquired Non Impaired Assets [Member] |  |
Covered Assets, Loan Status Designation [Line Items] |  |
Outstanding principal balance of acquired loans | 0 | 0
Special Mention [Member] | Construction - Custom [Member] | Acquired Non Impaired Assets [Member] |  |
Covered Assets, Loan Status Designation [Line Items] |  |
Outstanding principal balance of acquired loans | 0 | 0
Special Mention [Member] | Land - Acquisition & Development [Member] | Acquired Non Impaired Assets [Member] |  |
Covered Assets, Loan Status Designation [Line Items] |  |
Outstanding principal balance of acquired loans | 1,203 | 1,970
Special Mention [Member] | Land - Consumer Lot Loans [Member] | Acquired Non Impaired Assets [Member] |  |
Covered Assets, Loan Status Designation [Line Items] |  |
Outstanding principal balance of acquired loans | 0 | 0
Special Mention [Member] | Multi-Family [Member] | Acquired Non Impaired Assets [Member] |  |
Covered Assets, Loan Status Designation [Line Items] |  |
Outstanding principal balance of acquired loans | 0 | 0
Special Mention [Member] | Multi-Family [Member] | Acquired Impaired Assets [Member] |  |
Covered Assets, Loan Status Designation [Line Items] |  |
Outstanding principal balance of acquired loans | 0 | 0
Special Mention [Member] | Commercial Real Estate [Member] | Acquired Non Impaired Assets [Member] |  |
Covered Assets, Loan Status Designation [Line Items] |  |
Outstanding principal balance of acquired loans | 9,398 | 298
Special Mention [Member] | Commercial Real Estate [Member] | Acquired Impaired Assets [Member] |  |
Covered Assets, Loan Status Designation [Line Items] |  |
Outstanding principal balance of acquired loans | 15,205 | 25,785
Special Mention [Member] | Commercial & Industrial [Member] | Acquired Non Impaired Assets [Member] |  |
Covered Assets, Loan Status Designation [Line Items] |  |
Outstanding principal balance of acquired loans | 500 | 510
Special Mention [Member] | Commercial & Industrial [Member] | Acquired Impaired Assets [Member] |  |
Covered Assets, Loan Status Designation [Line Items] |  |
Outstanding principal balance of acquired loans | 229 | 1,006
Special Mention [Member] | HELOC [Member] | Acquired Non Impaired Assets [Member] |  |
Covered Assets, Loan Status Designation [Line Items] |  |
Outstanding principal balance of acquired loans | 0 | 0
Special Mention [Member] | Consumer [Member] | Acquired Non Impaired Assets [Member] |  |
Covered Assets, Loan Status Designation [Line Items] |  |
Outstanding principal balance of acquired loans | 0 | 0
Special Mention [Member] | Construction, Speculative and Land, Acquisition and Development [Member] | Acquired Impaired Assets [Member] |  |
Covered Assets, Loan Status Designation [Line Items] |  |
Outstanding principal balance of acquired loans | 4,297 | 5,301
Special Mention [Member] | HELOC & Other Consumer [Member] | Acquired Impaired Assets [Member] |  |
Covered Assets, Loan Status Designation [Line Items] |  |
Outstanding principal balance of acquired loans | 0 | 0
Substandard [Member] |  |
Covered Assets, Loan Status Designation [Line Items] |  |
Grade as percentage of total gross loans | 4.50% | 4.50%
Substandard [Member] | Acquired Non Impaired Assets [Member] |  |
Covered Assets, Loan Status Designation [Line Items] |  |
Outstanding principal balance of acquired loans | 27,236 | 49,302
Grade as percentage of total gross loans | 15.60% | 21.50%
Substandard [Member] | Acquired Impaired Assets [Member] |  |
Covered Assets, Loan Status Designation [Line Items] |  |
Outstanding principal balance of acquired loans | 102,921 | 96,771
Substandard [Member] | Single Family Residential [Member] | Acquired Non Impaired Assets [Member] |  |
Covered Assets, Loan Status Designation [Line Items] |  |
Outstanding principal balance of acquired loans | 2,698 | 3,404
Substandard [Member] | Single Family Residential [Member] | Acquired Impaired Assets [Member] |  |
Covered Assets, Loan Status Designation [Line Items] |  |
Outstanding principal balance of acquired loans | 340 | 2,953
Substandard [Member] | Construction - Speculative [Member] | Acquired Non Impaired Assets [Member] |  |
Covered Assets, Loan Status Designation [Line Items] |  |
Outstanding principal balance of acquired loans | 0 | 0
Substandard [Member] | Construction - Custom [Member] | Acquired Non Impaired Assets [Member] |  |
Covered Assets, Loan Status Designation [Line Items] |  |
Outstanding principal balance of acquired loans | 0 | 0
Substandard [Member] | Land - Acquisition & Development [Member] | Acquired Non Impaired Assets [Member] |  |
Covered Assets, Loan Status Designation [Line Items] |  |
Outstanding principal balance of acquired loans | 1,028 | 6,020
Substandard [Member] | Land - Consumer Lot Loans [Member] | Acquired Non Impaired Assets [Member] |  |
Covered Assets, Loan Status Designation [Line Items] |  |
Outstanding principal balance of acquired loans | 0 | 0
Substandard [Member] | Multi-Family [Member] | Acquired Non Impaired Assets [Member] |  |
Covered Assets, Loan Status Designation [Line Items] |  |
Outstanding principal balance of acquired loans | 294 | 2,747
Substandard [Member] | Multi-Family [Member] | Acquired Impaired Assets [Member] |  |
Covered Assets, Loan Status Designation [Line Items] |  |
Outstanding principal balance of acquired loans | 4,496 | 2,996
Substandard [Member] | Commercial Real Estate [Member] | Acquired Non Impaired Assets [Member] |  |
Covered Assets, Loan Status Designation [Line Items] |  |
Outstanding principal balance of acquired loans | 19,978 | 31,764
Substandard [Member] | Commercial Real Estate [Member] | Acquired Impaired Assets [Member] |  |
Covered Assets, Loan Status Designation [Line Items] |  |
Outstanding principal balance of acquired loans | 58,800 | 41,403
Substandard [Member] | Commercial & Industrial [Member] | Acquired Non Impaired Assets [Member] |  |
Covered Assets, Loan Status Designation [Line Items] |  |
Outstanding principal balance of acquired loans | 3,238 | 5,367
Substandard [Member] | Commercial & Industrial [Member] | Acquired Impaired Assets [Member] |  |
Covered Assets, Loan Status Designation [Line Items] |  |
Outstanding principal balance of acquired loans | 10,296 | 10,466
Substandard [Member] | HELOC [Member] | Acquired Non Impaired Assets [Member] |  |
Covered Assets, Loan Status Designation [Line Items] |  |
Outstanding principal balance of acquired loans | 0 | 0
Substandard [Member] | Consumer [Member] | Acquired Non Impaired Assets [Member] |  |
Covered Assets, Loan Status Designation [Line Items] |  |
Outstanding principal balance of acquired loans | 0 | 0
Substandard [Member] | Construction, Speculative and Land, Acquisition and Development [Member] | Acquired Impaired Assets [Member] |  |
Covered Assets, Loan Status Designation [Line Items] |  |
Outstanding principal balance of acquired loans | 26,955 | 35,857
Substandard [Member] | HELOC & Other Consumer [Member] | Acquired Impaired Assets [Member] |  |
Covered Assets, Loan Status Designation [Line Items] |  |
Outstanding principal balance of acquired loans | 2,034 | 3,096
Doubtful [Member] |  |
Covered Assets, Loan Status Designation [Line Items] |  |
Grade as percentage of total gross loans | 0.00% | 0.00%
Doubtful [Member] | Acquired Non Impaired Assets [Member] |  |
Covered Assets, Loan Status Designation [Line Items] |  |
Outstanding principal balance of acquired loans | 0 | 0
Grade as percentage of total gross loans | 0.00% | 0.00%
Doubtful [Member] | Acquired Impaired Assets [Member] |  |
Covered Assets, Loan Status Designation [Line Items] |  |
Outstanding principal balance of acquired loans | 0 | 0
Doubtful [Member] | Single Family Residential [Member] | Acquired Non Impaired Assets [Member] |  |
Covered Assets, Loan Status Designation [Line Items] |  |
Outstanding principal balance of acquired loans | 0 | 0
Doubtful [Member] | Single Family Residential [Member] | Acquired Impaired Assets [Member] |  |
Covered Assets, Loan Status Designation [Line Items] |  |
Outstanding principal balance of acquired loans | 0 | 0
Doubtful [Member] | Construction - Speculative [Member] | Acquired Non Impaired Assets [Member] |  |
Covered Assets, Loan Status Designation [Line Items] |  |
Outstanding principal balance of acquired loans | 0 | 0
Doubtful [Member] | Construction - Custom [Member] | Acquired Non Impaired Assets [Member] |  |
Covered Assets, Loan Status Designation [Line Items] |  |
Outstanding principal balance of acquired loans | 0 | 0
Doubtful [Member] | Land - Acquisition & Development [Member] | Acquired Non Impaired Assets [Member] |  |
Covered Assets, Loan Status Designation [Line Items] |  |
Outstanding principal balance of acquired loans | 0 | 0
Doubtful [Member] | Land - Consumer Lot Loans [Member] | Acquired Non Impaired Assets [Member] |  |
Covered Assets, Loan Status Designation [Line Items] |  |
Outstanding principal balance of acquired loans | 0 | 0
Doubtful [Member] | Multi-Family [Member] | Acquired Non Impaired Assets [Member] |  |
Covered Assets, Loan Status Designation [Line Items] |  |
Outstanding principal balance of acquired loans | 0 | 0
Doubtful [Member] | Multi-Family [Member] | Acquired Impaired Assets [Member] |  |
Covered Assets, Loan Status Designation [Line Items] |  |
Outstanding principal balance of acquired loans | 0 | 0
Doubtful [Member] | Commercial Real Estate [Member] | Acquired Non Impaired Assets [Member] |  |
Covered Assets, Loan Status Designation [Line Items] |  |
Outstanding principal balance of acquired loans | 0 | 0
Doubtful [Member] | Commercial Real Estate [Member] | Acquired Impaired Assets [Member] |  |
Covered Assets, Loan Status Designation [Line Items] |  |
Outstanding principal balance of acquired loans | 0 | 0
Doubtful [Member] | Commercial & Industrial [Member] | Acquired Non Impaired Assets [Member] |  |
Covered Assets, Loan Status Designation [Line Items] |  |
Outstanding principal balance of acquired loans | 0 | 0
Doubtful [Member] | Commercial & Industrial [Member] | Acquired Impaired Assets [Member] |  |
Covered Assets, Loan Status Designation [Line Items] |  |
Outstanding principal balance of acquired loans | 0 | 0
Doubtful [Member] | HELOC [Member] | Acquired Non Impaired Assets [Member] |  |
Covered Assets, Loan Status Designation [Line Items] |  |
Outstanding principal balance of acquired loans | 0 | 0
Doubtful [Member] | Consumer [Member] | Acquired Non Impaired Assets [Member] |  |
Covered Assets, Loan Status Designation [Line Items] |  |
Outstanding principal balance of acquired loans | 0 | 0
Doubtful [Member] | Construction, Speculative and Land, Acquisition and Development [Member] | Acquired Impaired Assets [Member] |  |
Covered Assets, Loan Status Designation [Line Items] |  |
Outstanding principal balance of acquired loans | 0 | 0
Doubtful [Member] | HELOC & Other Consumer [Member] | Acquired Impaired Assets [Member] |  |
Covered Assets, Loan Status Designation [Line Items] |  |
Outstanding principal balance of acquired loans | 0 | 0
Loss [Member] |  |
Covered Assets, Loan Status Designation [Line Items] |  |
Grade as percentage of total gross loans | 0.00% | 0.00%
Loss [Member] | Acquired Non Impaired Assets [Member] |  |
Covered Assets, Loan Status Designation [Line Items] |  |
Outstanding principal balance of acquired loans | 0 | 0
Grade as percentage of total gross loans | 0.00% | 0.00%
Loss [Member] | Acquired Impaired Assets [Member] |  |
Covered Assets, Loan Status Designation [Line Items] |  |
Outstanding principal balance of acquired loans | 0 | 0
Loss [Member] | Single Family Residential [Member] | Acquired Non Impaired Assets [Member] |  |
Covered Assets, Loan Status Designation [Line Items] |  |
Outstanding principal balance of acquired loans | 0 | 0
Loss [Member] | Single Family Residential [Member] | Acquired Impaired Assets [Member] |  |
Covered Assets, Loan Status Designation [Line Items] |  |
Outstanding principal balance of acquired loans | 0 | 0
Loss [Member] | Construction - Speculative [Member] | Acquired Non Impaired Assets [Member] |  |
Covered Assets, Loan Status Designation [Line Items] |  |
Outstanding principal balance of acquired loans | 0 | 0
Loss [Member] | Construction - Custom [Member] | Acquired Non Impaired Assets [Member] |  |
Covered Assets, Loan Status Designation [Line Items] |  |
Outstanding principal balance of acquired loans | 0 | 0
Loss [Member] | Land - Acquisition & Development [Member] | Acquired Non Impaired Assets [Member] |  |
Covered Assets, Loan Status Designation [Line Items] |  |
Outstanding principal balance of acquired loans | 0 | 0
Loss [Member] | Land - Consumer Lot Loans [Member] | Acquired Non Impaired Assets [Member] |  |
Covered Assets, Loan Status Designation [Line Items] |  |
Outstanding principal balance of acquired loans | 0 | 0
Loss [Member] | Multi-Family [Member] | Acquired Non Impaired Assets [Member] |  |
Covered Assets, Loan Status Designation [Line Items] |  |
Outstanding principal balance of acquired loans | 0 | 0
Loss [Member] | Multi-Family [Member] | Acquired Impaired Assets [Member] |  |
Covered Assets, Loan Status Designation [Line Items] |  |
Outstanding principal balance of acquired loans | 0 | 0
Loss [Member] | Commercial Real Estate [Member] | Acquired Non Impaired Assets [Member] |  |
Covered Assets, Loan Status Designation [Line Items] |  |
Outstanding principal balance of acquired loans | 0 | 0
Loss [Member] | Commercial Real Estate [Member] | Acquired Impaired Assets [Member] |  |
Covered Assets, Loan Status Designation [Line Items] |  |
Outstanding principal balance of acquired loans | 0 | 0
Loss [Member] | Commercial & Industrial [Member] | Acquired Non Impaired Assets [Member] |  |
Covered Assets, Loan Status Designation [Line Items] |  |
Outstanding principal balance of acquired loans | 0 | 0
Loss [Member] | Commercial & Industrial [Member] | Acquired Impaired Assets [Member] |  |
Covered Assets, Loan Status Designation [Line Items] |  |
Outstanding principal balance of acquired loans | 0 | 0
Loss [Member] | HELOC [Member] | Acquired Non Impaired Assets [Member] |  |
Covered Assets, Loan Status Designation [Line Items] |  |
Outstanding principal balance of acquired loans | 0 | 0
Loss [Member] | Consumer [Member] | Acquired Non Impaired Assets [Member] |  |
Covered Assets, Loan Status Designation [Line Items] |  |
Outstanding principal balance of acquired loans | 0 | 0
Loss [Member] | Construction, Speculative and Land, Acquisition and Development [Member] | Acquired Impaired Assets [Member] |  |
Covered Assets, Loan Status Designation [Line Items] |  |
Outstanding principal balance of acquired loans | 0 | 0
Loss [Member] | HELOC & Other Consumer [Member] | Acquired Impaired Assets [Member] |  |
Covered Assets, Loan Status Designation [Line Items] |  |
Outstanding principal balance of acquired loans | $ 0 | $ 0

X
- Definition Disclosure of the unamortized amount of the discount on the note or receivable which is deducted from the face amount of the receivable or loan. The discount or premium is the difference between the present value and the face amount. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 45 -Paragraph 1A -URI http://asc.fasb.org/extlink&oid=6451184&loc=d3e28541-108399 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Principles Board Opinion (APB) -Number 21 -Paragraph 16 -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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Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Details
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Namespace Prefix: | wfsl_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Covered Loans, Allowance for Losses + References No definition available. + Details
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Namespace Prefix: | wfsl_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Grade as Percentage of Total Gross Loans + References No definition available. + Details
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Namespace Prefix: | wfsl_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Loans and Leases Receivable, Covered Loans, Gross + References No definition available. + Details
Name: | wfsl_LoansAndLeasesReceivableCoveredLoans
Namespace Prefix: | wfsl_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Loans and Leases Receivable, Covered Loans, Gross + References No definition available. + Details
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Namespace Prefix: | wfsl_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Loans and Leases Receivable, Covered Loans, Net Reported Amount + References No definition available. + Details
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Namespace Prefix: | wfsl_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant