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Commitments and Contingencies (Tables)
 6 Months Ended
Jun. 30, 2017
Commitments and Contingencies Disclosure [Abstract]  
Activity in Recorded Environmental Liabilities
We had the following activity in our recorded environmental liabilities for the six months ended June 30, 2017, as follows (in thousands):
Beginning balance at December 31, 2016
$
34,919

Expenditures
(894
)
Accretion of discount
370

Foreign currency translation adjustments and other
1,643

Ending balance at June 30, 2017
36,038

Less amounts reported in Accrued expenses
2,390

Amounts reported in Other noncurrent liabilities
$
33,648