XML 52 R39.htm IDEA: XBRL DOCUMENT v3.4.0.3
Benefit Plans (Schedule Of Benefit Plans) (Details) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2016
Mar. 31, 2015
Pension Costs    
Defined Benefit Plan Disclosure [Line Items]    
Service cost $ 508 $ 827
Interest cost 1,498 1,526
Expected return on plan assets (1,310) (1,354)
Amortization of prior service cost/benefit 0 1
Net cost 696 1,000
Postretirement Costs    
Defined Benefit Plan Disclosure [Line Items]    
Service cost 1 4
Interest cost 272 315
Amortization of prior service cost/benefit 0 (43)
Net cost $ 273 $ 276