XML 164 R60.htm IDEA: XBRL DOCUMENT v2.4.0.8
Employee Benefit Plans (Details) (USD $)
 3 Months Ended 6 Months Ended
Jun. 30, 2013
employee
post_retirement_benefit_plan
Jun. 30, 2013
post_retirement_benefit_plan
Jun. 30, 2012
Dec. 31, 2012
Defined Benefit Plan Disclosure [Line Items]        
Requisite period of service   P3M    
Defined contribution plan employer maximum percentage of annual profit-sharing contribution to plan for benefit of employee (in hundredths)       2.00%
Expense related to 401(k) plan $ 199,000   $ 186,000  
Supplemental retirement payment period 20 years      
Pension expense 155,000   77,000  
Accrued pension liability 2,207,000 2,207,000 1,964,000 2,080,000
Number of post retirement benefit plans 2 2    
Number of employees currently eligible 7      
Requisite age   50 years    
Post-retirement benefit plan health insurance subsidy range minimum per month per person 40 40    
Post-retirement benefit plan health insurance subsidy range maximum per month per person 1,200 1,200    
Discount rate 4.50% 4.50%    
Assumed health care cost trend rate (in hundredths) 7.00%      
Expected future benefit payments, next quarter 26,000 26,000    
Expected future benefit payments, current year 102,000 102,000    
Estimated plan expense 112,000 112,000    
Effect of one percentage point increase on accumulated benefit obligation 100,000      
Effect of One Percentage Point Increase on Interest Cost Components 7,000      
Effect of One Percentage Point Increase on Service Cost Components $ 1,000      
Maximum [Member]
        
Defined Benefit Plan Disclosure [Line Items]        
Defined contribution plan employer maximum percentage match of annual salary based on employee contribution (in hundredths) 3.00% 3.00%