XML 16 R5.htm IDEA: XBRL DOCUMENT v3.4.0.3
CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (UNAUDITED) (Parenthetical) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2016
Mar. 31, 2015
Pension and retiree medical benefits:    
Amortization of losses included in net periodic benefit cost, tax $ 15 $ (4)
Derivative instruments:    
Net fair value (decrease) increase, tax (1) (4)
Reclassification of losses to net income, tax 154 143
Marketable securities:    
Net fair value (decrease) increase, tax $ 0 $ 0