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Nature of Operations and Summary of Significant Accounting Policies (Details Textual) (USD $)
1 Months Ended 12 Months Ended
Nov. 30, 2012
Dec. 31, 2011
Dec. 31, 2012
Business
Valuation_Techniques
Facilities
Subsidiaries
Dec. 31, 2011
Dec. 31, 2010
Nature of Operations and Summary of Significant Accounting Policies (Additional Textual) [Abstract]          
Wholly owned subsidiaries     2    
Full service facilities maintained by bank     29    
Number of business conduct     0    
Factor considered to be significant for fair value measurement     10.00%    
Commercial loans as a percentage of total loan     39.00%    
Residential real estate loans as a percentage of total loan     16.00%    
Installment loans as a percentage of total loan     24.00%    
Mortgage warehouse loans as a percentage of total loan     21.00%    
Period in which loan sold by mortgage company     30 days    
Minimum period loan held by mortgage company     90 days    
Mortgage warehousing maximum pay off period     30 days    
Costs are deferred due to the term     $ 0    
Number of valuation techniques to measure fair value     3    
Accrual of interest discontinued description     principal or interest is past due 90 days or more, and the loan is not well secured or in the process of collection, or when serious doubt exists as to the collectability of a loan, the accrual of interest is discontinued    
Impaired loans charged off     90 days    
Status of Non-Accrual of Loan     90 days    
Impairment of Loan     30 days    
Intangibles, Gross     4,000,000    
Goodwill   5,910,000 19,748,000 5,910,000  
Uncertain tax positions recognized     50.00%    
Stock split conversion ratio 1.5 1.5      
Shares, non-dilutive     8,438 47,117 72,500
Amount available for payment of dividend     15,800,000    
Cash and cash equivalents maximum maturity period     1 day    
Compensation expense     33,000 35,000 30,000
Reclassifications effect on net income     $ 0    
Buildings and improvements [Member] | Minimum [Member]
         
Nature of Operations and Summary of Significant Accounting Policies (Textual) [Abstract]          
Useful Life for depreciation     3 years    
Buildings and improvements [Member] | Maximum [Member]
         
Nature of Operations and Summary of Significant Accounting Policies (Textual) [Abstract]          
Useful Life for depreciation     40 years    
Furniture and Equipment [Member] | Minimum [Member]
         
Nature of Operations and Summary of Significant Accounting Policies (Textual) [Abstract]          
Useful Life for depreciation     2 years    
Furniture and Equipment [Member] | Maximum [Member]
         
Nature of Operations and Summary of Significant Accounting Policies (Textual) [Abstract]          
Useful Life for depreciation     20 years