XML 54 R42.htm IDEA: XBRL DOCUMENT v3.7.0.1
Basis of Presentation Reclassification of adjustments out of Accumulated Other Comprehensive Loss (Details) - USD ($)
$ in Thousands
 3 Months Ended
Mar. 31, 2017
Mar. 31, 2016
Other Comprehensive Income (Loss), Derivatives Qualifying as Hedges, before Tax $ 0 $ (15,438)
Other Comprehensive Income (Loss), Derivatives Qualifying as Hedges, Tax 0 5,624
Other Comprehensive Income (Loss), Derivatives Qualifying as Hedges, Net of Tax 0 (9,814)
Defined Benefit Plan, Amortization of Prior Service Cost (Credit) (749) (148)
Defined Benefit Plan, Amortization of Gains (Losses) 6,303 5,511
Defined Benefit Plan, Net Periodic Benefit Cost 5,554 5,363
Other Comprehensive Income (Loss), Tax (2,052) (2,018)
Actuarially Determined Long-Term Liability Adjustments, Net of Tax $ 3,502 $ 3,345