XML 18 R5.htm IDEA: XBRL DOCUMENT v3.5.0.2
CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (Unaudited) (Parenthetical) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2016
Sep. 30, 2015
Sep. 30, 2016
Sep. 30, 2015
Statement of Comprehensive Income [Abstract]        
Amortization of prior service credits, taxes $ 130 $ 130 $ 389 $ 388
Amortization of actuarial losses, taxes (520) (635) (1,551) (1,909)
Unrealized (losses) gains on derivatives, taxes (1,663) 3,517 658 7,092
Reclassification adjustment for realized losses, taxes $ (154) $ (600) $ (494) $ (2,777)