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Employee Benefit Plans (Details) (USD $)
 12 Months Ended
Dec. 31, 2013
plan
employee
Dec. 31, 2012
Dec. 31, 2011
General Discussion of Pension and Other Postretirement Benefits [Abstract]      
Defined Benefit Plan, Expected Future Benefit Payments, Next Twelve Months $ 102,000    
Defined contribution plan [Abstract]      
Defined contribution plan employer maximum percentage match of annual salary based on employee contribution (in hundredths) 3.00%    
Defined contribution plan employer maximum percentage of annual profit-sharing contribution to plan for benefit of employee (in hundredths) 2.00% 2.00% 2.00%
Expense related to 401(k) plan 414,000 363,000 341,000
Defined benefit plans, general information The Bank also provides unfunded, non-qualified supplemental retirement benefits for certain officers, payable in installments over 20 years upon retirement or death. The agreements consist of individual contracts with differing characteristics that, when taken together, do not constitute a post-retirement plan.    
Pension expense 309,000 289,000 307,000
Accrued pension liability 2,333,000 2,080,000  
Number of post-retirement benefit plans 2    
Number of active employees aged 50 and over 7    
Employee Benefit Plan, Requisite Minimum Age 50 years    
Post-retirement benefit plan health insurance subsidy range minimum per month per person 40    
Post-retirement benefit plan health insurance subsidy range maximum per month per person 1,200    
Defined Benefit Plan, Expected Future Benefit Payments, Year Two 103,000    
Defined Benefit Plan, Expected Future Benefit Payments, Year Three 117,000    
Defined Benefit Plan, Expected Future Benefit Payments, Year Four 118,000    
Defined Benefit Plan, Expected Future Benefit Payments, Year Five 119,000    
Defined Benefit Plan, Expected Future Benefit Payments, Five Fiscal Years Thereafter 551,000    
Estimated plan expense 59,000    
Post Employment Plan, Supplemental Benefits, Payment Period Upon Retirement Or Death 20 years    
Unrecognized transition obligation [Abstract]      
Net unrecognized gain (loss) on postretirement benefit costs 188,000 (123,000)  
Net unrealized loss on postretirement benefits $ 188,000 $ (123,000)  
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent 35.00% 35.00% 35.00%