Quarterly report pursuant to Section 13 or 15(d)

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

v3.8.0.1
Accumulated Other Comprehensive Income (Loss) - Pre-tax and After-tax Components of Other Comprehensive Inoome (Loss) (Details) - USD ($)
$ in Thousands
 3 Months Ended 9 Months Ended
Sep. 30, 2017
Sep. 30, 2016
Sep. 30, 2017
Sep. 30, 2016
After-tax amount        
Pre-tax amount $ 20,824 $ 2,416 $ 63,568 $ (7,019)
Tax benefit / (expense) (2,295) (767) (6,625) 888
Total other comprehensive income (loss) 18,529 1,649 56,943 (6,131)
Defined benefit and other postretirement plans        
After-tax amount        
Pre-tax amount (33) 162 (261) 486
Tax benefit / (expense) 13 0 38 0
Total other comprehensive income (loss) (20) 162 (223) 486
Net loss (gain) from hedging activities        
After-tax amount        
Pre-tax amount (486) 324 (5,373) 2,100
Tax benefit / (expense) 185 (123) 2,047 (798)
Total other comprehensive income (loss) (301) 201 (3,326) 1,302
Foreign currency translation        
After-tax amount        
Pre-tax amount 21,343 1,930 69,202 (9,605)
Tax benefit / (expense) (2,493) (644) (8,710) 1,686
Total other comprehensive income (loss) $ 18,850 $ 1,286 $ 60,492 $ (7,919)