XML 73 R57.htm IDEA: XBRL DOCUMENT v3.6.0.2
Summary of Significant Accounting Policies (Details)
1 Months Ended 12 Months Ended
Jul. 31, 2011
trust
Dec. 31, 2016
USD ($)
acquisition
Dec. 31, 2015
USD ($)
Dec. 31, 2014
USD ($)
Jan. 01, 2015
bank
Jul. 01, 2011
bank
Cash and Cash Equivalents [Abstract]            
Maximum maturity period of highly liquid investments   3 months        
Interest-bearing Deposits in Other Banks [Abstract]            
Maturity period of interest bearing deposits in other banks   1 year        
Derivative Loan Commitments [Abstract]            
Derivative loan commitments income   $ 0 $ 0 $ 0    
Period of time between issuance and sale of loan commitment, minimum   30 days        
Period of time between issuance and sale of loan commitment, maximum   60 days        
Loans [Abstract]            
Period to discontinued interest accrual on delinquent loans   90 days        
Past due period when loans are charged off   120 days        
Substandard and doubtful risk graded loan on unsecured basis   $ 100,000        
Troubled Debt Restructurings [Abstract]            
Loans classified as TDR   $ 2,670,000 1,958,000      
Finite-Lived Intangible Assets [Line Items]            
Bank owned life insurance, number of acquisitions over the past decade | acquisition   3        
Income Taxes [Abstract]            
Percentage of tax benefit that is being realized for settlement (in hundredths)   50.00%        
Unrecognized tax benefits   $ 0 0      
Advertising and Marketing Costs [Abstract]            
Advertising and marketing costs   $ 260,000 $ 356,000 $ 453,000    
Franklin Community Bank            
Business Acquisition [Line Items]            
Number of banking offices | bank         3  
Minimum            
Property, Plant and Equipment [Line Items]            
Estimated useful lives   3 years        
Finite-Lived Intangible Assets [Line Items]            
Amortization period of intangible   8 years        
Maximum            
Property, Plant and Equipment [Line Items]            
Estimated useful lives   39 years        
Finite-Lived Intangible Assets [Line Items]            
Amortization period of intangible   10 years        
Software            
Property, Plant and Equipment [Line Items]            
Estimated useful lives   3 years        
MidCarolina            
Finite-Lived Intangible Assets [Line Items]            
Amortization period of intangible 108 months          
MidCarolina | North Carolina            
Business Acquisition [Line Items]            
Number of branches added upon completion of acquisition | bank           8
MidCarolina | Delaware            
Business Acquisition [Line Items]            
Number of unconsolidated statutory trusts | trust 2