XML 20 R33.htm IDEA: XBRL DOCUMENT v2.4.0.8
Employee Retirement Plans (Details) (USD $)
In Thousands, unless otherwise specified
3 Months Ended 9 Months Ended
Sep. 30, 2014
Sep. 30, 2013
Sep. 30, 2014
Sep. 30, 2013
Defined Benefit Plan Disclosure [Line Items]        
Benefits earned during the period $ 316 $ 447 $ 947 $ 1,279
Interest cost on projected benefit obligation 647 608 1,939 1,794
Expected return on plan assets (586) (525) (1,757) (1,569)
Net amortization and deferral 176 440 530 1,262
Net pension expense $ 553 $ 970 $ 1,659 $ 2,766