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Summary of Significant Accounting Policies (Details) (USD $)
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12 Months Ended |
|---|---|
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Dec. 31, 2011
location
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|
| Accounting Policies [Line Items] | |
| Number Of Branch Locations | 102 |
| Number Of Days Used To Determine Treatment As Cash Equivalent | 90 days |
| Number of Days of Delinqunecy at Which Loans Are Categorized As Non Accrual Status | 90 days |
| Loans and Leases Receivable, Nonaccrual Loans Considered Impaired | $ 250,000 |
| Loans and Leases Receivable, Loans Evaluated For Impairment On Quarterly Basis, Outstanding | $ 250,000 |
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Core Deposits [Member]
|
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| Accounting Policies [Line Items] | |
| Estimated life of CDI, in years | 10 |
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WASHINGTON
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|
| Accounting Policies [Line Items] | |
| Number Of Branch Locations | 77 |
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OREGON
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| Accounting Policies [Line Items] | |
| Number Of Branch Locations | 25 |