XML 107 R93.htm IDEA: XBRL DOCUMENT v3.3.1.900
Employee Benefit Plans (Details 4) - USD ($)
$ in Thousands
3 Months Ended 12 Months Ended
Sep. 30, 2014
Dec. 31, 2015
Dec. 31, 2014
Aug. 01, 2014
Impact of one-percentage-point change in assumed healthcare cost trend rates        
Increase (decrease) on total service and interest cost on components, One percentage point increase   $ 271    
Increase (decrease) on total service and interest cost on components, One percentage point decrease   (225)    
Increase (decrease) on post-retirement benefit obligation, One percentage point increase   2,099    
Increase (decrease) on post-retirement benefit obligation, One percentage point decrease   $ (1,801)    
Defined Benefit Pension Plan        
Weighted average interest rate assumptions used in determining benefit obligations        
Discount rate   4.55% 4.17%  
Rate of compensation increase   4.47% 4.47%  
Weighted average interest rate assumptions used in determining the net periodic (benefit) cost        
Discount rate   4.17% 5.11%  
Expected return on plan assets   6.50% 7.25%  
Rate of compensation increase   4.47% 4.47%  
Post-Retirement Medical Plan        
Weighted average interest rate assumptions used in determining benefit obligations        
Discount rate   4.31% 3.94%  
Initial health care cost trend   7.00% 6.50%  
Ultimate health care cost trend   5.00% 5.00%  
Weighted average interest rate assumptions used in determining the net periodic (benefit) cost        
Discount rate   3.94% 4.83%  
Initial health care cost trend   6.50% 7.00%  
Ultimate health care cost trend   5.00% 5.00%  
Supplemental Executive Retirement Plan        
Employee benefit plans        
Defined Benefit Plan, Settlements, Benefit Obligation, Percentage       21.00%
Other Comprehensive (Income) Loss, Reclassification Adjustment from AOCI, Pension and Other Postretirement Benefit Plans, before Tax $ 1,857      
Weighted average interest rate assumptions used in determining benefit obligations        
Discount rate   4.22% 3.99%  
Rate of compensation increase   4.00% 4.00%  
Weighted average interest rate assumptions used in determining the net periodic (benefit) cost        
Discount rate   3.99% 4.61%  
Rate of compensation increase   4.00% 4.00%  
Other Noncurrent Liabilities With Offset To Goodwill | Supplemental Executive Retirement Plan        
Employee benefit plans        
Defined Benefit Plan, Benefit Obligation, Period Increase (Decrease)   $ 3,911