Annual report pursuant to Section 13 and 15(d)

Summary of Significant Accounting Policies (Details Textual)

v2.4.0.6
Summary of Significant Accounting Policies (Details Textual) (USD $)
 12 Months Ended
Dec. 31, 2012
Loan
Dec. 31, 2011
Summary of Significant Accounting Policies (Textual) [Abstract]    
Minimum percentage of testing goodwill for impairment 50.00%  
Summary of Significant Accounting Policies (Additional Textual) [Abstract]    
Commercial loans charge-offs, period 120 days  
Maximum days for net realizable value 180 days  
Minimum impaired loans to whom specific reserve relates $ 500,000  
Maximum impaired loans to whom general reserve relates 500,000  
Percentage of Federal home loan bank reserves 4.50%  
Percentage of Federal Reserve Bank of Richmond reserve 6.00%  
Number of loan portfolio segments 2  
Number of loan class segments 14  
Number of commercial loan portfolio segment 7  
Future payments contractual term 6 months  
Troubled Debt Restructuring classification 12 months  
Allowance for loan losses, recorded investment   23,700,000
Allowance for loan losses, current evaluation of loss   221,000
Life insurance purchase price 54,800,000 53,200,000
Minimum tax benefit realized 50.00%  
Minimum percentage of testing goodwill for impairment 50.00%  
Minimum [Member]
    
Summary of Significant Accounting Policies (Textual) [Abstract]    
Commercial loans on nonaccrual status, period 90 days  
Period of independent appraisals 12 months  
Estimated useful life of bank premises and equipment 3 years  
Period of time between issuance of loan commitment and closing and sale of loan 30 days  
Maximum [Member]
    
Summary of Significant Accounting Policies (Textual) [Abstract]    
Commercial loans on nonaccrual status, period 180 days  
Period of independent appraisals 24 months  
Estimated useful life of bank premises and equipment 40 years  
Period of time between issuance of loan commitment and closing and sale of loan 120 days  
Harrisonburg branch acquisition [Member]
    
Summary of Significant Accounting Policies (Textual) [Abstract]    
Impairment charges $ 0