Quarterly report pursuant to Section 13 or 15(d)

Accumulated Other Comprehensive Income (Loss) - Change by Component (Details)

v3.8.0.1
Accumulated Other Comprehensive Income (Loss) - Change by Component (Details) - USD ($)
$ in Thousands
 3 Months Ended 9 Months Ended
Sep. 30, 2017
Sep. 30, 2016
Sep. 30, 2017
Sep. 30, 2016
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax        
Beginning balance     $ 1,027,944 $ 235,293
Amounts reclassified from accumulated other comprehensive income $ 99 $ 259 177 711
Total other comprehensive income (loss) 18,529 1,649 56,943 (6,131)
Ending balance 1,080,970 1,066,733 1,080,970 1,066,733
Total        
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax        
Beginning balance     (53,711) 648
Other comprehensive income (loss) before reclassifications     56,512 (6,229)
Amounts reclassified from accumulated other comprehensive income     177 711
Total other comprehensive income (loss)     56,689 (5,518)
Ending balance 2,978 (4,870) 2,978 (4,870)
Defined benefit and other postretirement plans        
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax        
Beginning balance     7,513 648
Other comprehensive income (loss) before reclassifications     (322) 486
Amounts reclassified from accumulated other comprehensive income 33 0 99 0
Total other comprehensive income (loss)     (223) 486
Ending balance 7,290 1,134 7,290 1,134
Net gain (loss) from hedging activities        
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax        
Beginning balance     4,557 0
Other comprehensive income (loss) before reclassifications     (3,404) 591
Amounts reclassified from accumulated other comprehensive income     78 711
Total other comprehensive income (loss)     (3,326) 1,302
Ending balance 1,231 1,302 1,231 1,302
Foreign currency translation        
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax        
Beginning balance     (65,781) 0
Other comprehensive income (loss) before reclassifications     60,238 (7,306)
Amounts reclassified from accumulated other comprehensive income     0 0
Total other comprehensive income (loss)     60,238 (7,306)
Ending balance $ (5,543) $ (7,306) $ (5,543) $ (7,306)