v3.10.0.1
Commitments and Contingencies - Activity in Recorded Environmental Liabilities (Details) - USD ($)
$ in Thousands
6 Months Ended
Jun. 30, 2018
Jun. 30, 2018
Accrual for Environmental Loss Contingencies [Roll Forward]    
Balance at beginning of period $ 39,808  
Expenditures (3,219)  
Accretion of discount 449  
Additions and changes in estimates 16,236  
Foreign currency translation adjustments (590)  
Balance at end of period $ 39,808 $ 52,684
Less amounts reported in Accrued expenses   4,981
Amounts reported in Other noncurrent liabilities   $ 47,703