XML 53 R42.htm IDEA: XBRL DOCUMENT v3.4.0.3
Accumulated Other Comprehensive Income, Reclassified (Details) - USD ($)
$ in Thousands
 3 Months Ended
Mar. 31, 2016
Mar. 31, 2015
Amortization of postretirement benefit plans [Abstract]    
Prior service benefit $ (13) $ (29)
Unrecognized loss 275 618
Income tax expense (108) $ (241)
Total reclassifications for the period (154)  
Reclassification out of Accumulated Other Comprehensive Income [Member]    
Amortization of postretirement benefit plans [Abstract]    
Prior service benefit [1] (13)  
Unrecognized loss [1] 275  
Total before income tax 262  
Income tax expense (108)  
Total reclassifications for the period $ 154  
[1] These accumulated other comprehensive income components are included in the computation of net periodic postretirement benefit costs, which are included in selling, general and administrative expenses in our consolidated statements of operations (see Note 10 for additional details).