Quarterly report pursuant to Section 13 or 15(d)

Accumulated Other Comprehensive Income - Pre-tax and After-tax Components of Other Comprehensive Income (Loss) (Details)

v3.8.0.1
Accumulated Other Comprehensive Income - Pre-tax and After-tax Components of Other Comprehensive Income (Loss) (Details) - USD ($)
$ in Thousands
 3 Months Ended
Mar. 31, 2018
Mar. 31, 2017
After-tax amount    
Pre-tax amount $ 13,002 $ 14,191
Tax benefit/(expense) (2,166) (804)
Total other comprehensive income 10,836 13,387
Defined benefit and other postretirement plans    
After-tax amount    
Pre-tax amount (24) (194)
Tax benefit/(expense) 6 13
Total other comprehensive income (18) (181)
Net gain (loss) from hedging activities    
After-tax amount    
Pre-tax amount 2,912 (2,862)
Tax benefit/(expense) (729) 1,093
Total other comprehensive income 2,183 (1,769)
Foreign currency translation    
After-tax amount    
Pre-tax amount 10,114 17,247
Tax benefit/(expense) (1,443) (1,910)
Total other comprehensive income $ 8,671 $ 15,337