XML 31 R23.htm IDEA: XBRL DOCUMENT v2.4.0.8
Pension Plans (Details) (USD $)
 3 Months Ended 6 Months Ended
Jun. 30, 2014
Jun. 30, 2013
Jun. 30, 2014
Jun. 30, 2013
Net pension cost [Abstract]        
Amortization of prior service costs $ (32,000) $ (32,000) $ (64,000) $ (64,000)
Amortization of actuarial loss (48,000) (266,000) (98,000) (532,000)
Pension Plans [Member]
        
Net pension cost [Abstract]        
Service cost-benefits earned during period 31,000 27,000 62,000 54,000
Interest cost on projected benefit obligations 954,000 877,000 1,908,000 1,754,000
Expected return on plan assets (1,214,000) (1,243,000) (2,428,000) (2,486,000)
Amortization of prior service costs 52,000 52,000 104,000 104,000
Amortization of actuarial loss 79,000 428,000 158,000 856,000
Net pension costs (98,000) 141,000 (196,000) 282,000
Pension Plans [Member] | Minimum [Member]
        
Defined Benefit Plan Disclosure [Line Items]        
Duration of termination process of defined benefit pension plan     12 months  
Pension Plans [Member] | Maximum [Member]
        
Defined Benefit Plan Disclosure [Line Items]        
Duration of termination process of defined benefit pension plan     18 months  
Supplemental Executive Retirement Plan [Member]
        
Defined Benefit Plan Disclosure [Line Items]        
Maximum amount of annual retirement benefits     $ 125,000