v2.4.0.6
Employee Retirement Plans (Details) (USD $)
In Thousands, unless otherwise specified
3 Months Ended
Mar. 31, 2014
Mar. 31, 2013
Defined Benefit Plan Disclosure [Line Items]    
Benefits earned during the period $ 391 $ 385
Interest cost on projected benefit obligation 663 578
Expected return on plan assets (573) (519)
Net amortization and deferral 197 381
Net pension expense $ 678 $ 825