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Restructuring and Asset Impairment Charges Employee Separation and Other Cash Charges (Details) - USD ($)
$ in Thousands
3 Months Ended
Jun. 30, 2015
Jun. 30, 2014
Restructuring Reserve [Roll Forward]    
Beginning balance $ 8,087 $ 397
Period charges 375 0
Payments through June 30 (1,246) (296)
Ending balance 7,216 101
South America [Member]    
Restructuring Reserve [Roll Forward]    
Beginning balance 0 0
Period charges 0 0
Payments through June 30 0 0
Ending balance 0 0
Other regions [Member]    
Restructuring Reserve [Roll Forward]    
Beginning balance 8,087 397
Period charges 375 0
Payments through June 30 (1,246) (296)
Ending balance $ 7,216 $ 101