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Segment Reporting (Schedule of Revenue from External Customers and Long-Lived Assets, by Geographical Areas) (Details) - USD ($)
$ in Thousands
 3 Months Ended
Mar. 31, 2018
Mar. 31, 2017
Dec. 31, 2017
Net Sales:      
Total net sales $ 225,930 $ 204,311  
Long-term Assets:      
Total long-term assets 261,509   $ 255,668
North America [Member]      
Net Sales:      
Total net sales 124,429 123,386  
Long-term Assets:      
Total long-term assets 93,615   89,997
South America [Member]      
Net Sales:      
Total net sales 20,545 21,633  
Long-term Assets:      
Total long-term assets 57,430   58,989
Europe and Other [Member]      
Net Sales:      
Total net sales [1] 80,956 $ 59,292  
Long-term Assets:      
Total long-term assets $ 110,464   $ 106,682
[1] The amount for 2017 includes two months of net sales from the acquisition date of January 31, 2017 related to Orlaco which is disclosed in Note 4