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Business Combinations, Goodwill and Intangible Assets (Table Showing Changes in Carrying Amount of Goodwill) (Details) - USD ($)
$ in Thousands
 3 Months Ended 12 Months Ended
Mar. 31, 2016
Dec. 31, 2015
Goodwill [Line Items]    
Balance, beginning of the year $ 86,545 $ 68,829
Business acquisition 2,832 37,044
Effect of exchange rates changes 2,002 (19,328)
Balance, end of the year 91,379 86,545
Brazil [Member]    
Goodwill [Line Items]    
Balance, beginning of the year 18,526 10,557
Business acquisition 1,593 14,066
Effect of exchange rates changes 1,477 (6,097)
Balance, end of the year 21,596 18,526
Argentina [Member]    
Goodwill [Line Items]    
Balance, beginning of the year 7,430 $ 11,859
Business acquisition 700
Effect of exchange rates changes (821) $ (4,429)
Balance, end of the year 7,309 7,430
Chile [Member]    
Goodwill [Line Items]    
Balance, beginning of the year 16,438 $ 19,101
Business acquisition  
Effect of exchange rates changes 942 $ (2,663)
Balance, end of the year 17,380 16,438
Mexico [Member]    
Goodwill [Line Items]    
Balance, beginning of the year 33,834 15,719
Business acquisition 190 22,978
Effect of exchange rates changes 265 (4,863)
Balance, end of the year 34,289 33,834
Venezuela [Member]    
Goodwill [Line Items]    
Balance, beginning of the year 5,729 $ 5,729
Business acquisition 260
Effect of exchange rates changes  
Balance, end of the year 5,989 $ 5,729
Colombia [Member]    
Goodwill [Line Items]    
Balance, beginning of the year 3,437 $ 4,521
Business acquisition 57
Effect of exchange rates changes 131 $ (1,084)
Balance, end of the year 3,625 3,437
Other Countries [Member]    
Goodwill [Line Items]    
Balance, beginning of the year 1,151 $ 1,343
Business acquisition 32
Effect of exchange rates changes 8 $ (192)
Balance, end of the year $ 1,191 $ 1,151