XML 12 R39.htm IDEA: XBRL DOCUMENT v2.4.0.6
Employee Benefit Plans (Details) (USD $)
In Thousands, unless otherwise specified
3 Months Ended
Mar. 31, 2013
Apr. 01, 2012
Components of pension expense (benefit)    
Service cost $ 7 $ 10
Interest cost on projected benefit obligation 416 466
Net amortizations, deferrals and other costs 212 201
Expected return on plan assets (630) (608)
Total $ 5 $ 69