Quarterly report pursuant to Section 13 or 15(d)

Employee Retirement Plans (Details)

v2.4.0.8
Employee Retirement Plans (Details) (USD $)
In Thousands, unless otherwise specified
3 Months Ended 3 Months Ended
Mar. 31, 2014
Pension Plan, Defined Benefit [Member]
Mar. 31, 2013
Pension Plan, Defined Benefit [Member]
Dec. 31, 2014
Pension Plan, Defined Benefit [Member]
Minimum [Member]
Scenario, Forecast [Member]
Mar. 31, 2014
Other Postretirement Benefit Plan, Defined Benefit [Member]
Mar. 31, 2013
Other Postretirement Benefit Plan, Defined Benefit [Member]
Components of net periodic cost:          
Service cost $ 54 $ 62   $ 40 $ 63
Interest cost 374 362   53 61
Expected return on plan assets (408) (352)      
Amortization of net (gain) loss 51 301   (100) (43)
Net periodic cost 71 373   (7) 81
Estimated total required contributions     1,409    
Cash contributions $ 506 $ 95