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Summary of Significant Accounting Policies (Details) - USD ($)
12 Months Ended
Dec. 31, 2014
Dec. 31, 2013
Change In Accounting Estimate [Line Items]    
Real estate acquired by foreclosure $ 39,922,000 $ 71,562,000
Foreclosed Properties Acquired In Compliance With Hud Servicing Guidelines [Member]    
Change In Accounting Estimate [Line Items]    
Real estate acquired by foreclosure $ 9,500,000  
Deposit Bases Member [Member]    
Change In Accounting Estimate [Line Items]    
Intangible assets, amortized period 10 years  
Minimum [Member] | Building [Member]    
Change In Accounting Estimate [Line Items]    
Useful life of premises and equipment 7 years  
Minimum [Member] | Furniture And Fixtures [Member]    
Change In Accounting Estimate [Line Items]    
Useful life of premises and equipment 3 years  
Minimum [Member] | Non Accruing [Member]    
Change In Accounting Estimate [Line Items]    
Impaired commercial loans $ 1,000,000  
Maximum [Member] | Building [Member]    
Change In Accounting Estimate [Line Items]    
Useful life of premises and equipment 45 years  
Maximum [Member] | Furniture And Fixtures [Member]    
Change In Accounting Estimate [Line Items]    
Useful life of premises and equipment 15 years