v2.4.0.6
Employee Retirement Plans (Details) (USD $)
In Thousands, unless otherwise specified
3 Months Ended 9 Months Ended
Sep. 30, 2013
Sep. 30, 2012
Sep. 30, 2013
Sep. 30, 2012
Benefits earned during the period $ 447 $ 352 $ 1,279 $ 1,120
Interest cost on projected benefit obligation 608 571 1,794 1,746
Expected return on plan assets (525) (510) (1,569) (1,484)
Net amortization and deferral 440 356 1,262 1,256
Net pension expense $ 970 $ 769 $ 2,766 $ 2,638