Business Combinations, Goodwill and Intangible Assets (Table Showing Changes in Carrying Amount of Goodwill) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended	12 Months Ended
Mar. 31, 2015	Dec. 31, 2014
Goodwill [Line Items]
Balance, beginning of the period	$ 68,829us-gaap_Goodwill	$ 55,101us-gaap_Goodwill
Business Acquisition		23,923us-gaap_GoodwillAcquiredDuringPeriod
Effect of exchange rates changes	(3,252)	(10,195)
Balance, end of the period	65,577us-gaap_Goodwill	68,829us-gaap_Goodwill
Brazil [Member]
Goodwill [Line Items]
Balance, beginning of the period	10,557	10,366
Business Acquisition		1,538
Effect of exchange rates changes	(1,381)	(1,347)
Balance, end of the period	9,176	10,557
Argentina [Member]
Goodwill [Line Items]
Balance, beginning of the period	11,859	14,676
Business Acquisition		775
Effect of exchange rates changes	(376)	(3,592)
Balance, end of the period	11,483	11,859
Chile [Member]
Goodwill [Line Items]
Balance, beginning of the period	19,101	6,520
Business Acquisition		14,710
Effect of exchange rates changes	(579)	(2,129)
Balance, end of the period	18,522	19,101
Mexico [Member]
Goodwill [Line Items]
Balance, beginning of the period	15,719	11,376
Business Acquisition		6,293
Effect of exchange rates changes	(552)	(1,950)
Balance, end of the period	15,167	15,719
Venezuela [Member]
Goodwill [Line Items]
Balance, beginning of the period	5,729	5,252
Business Acquisition		477
Effect of exchange rates changes
Balance, end of the period	5,729	5,729
Colombia [Member]
Goodwill [Line Items]
Balance, beginning of the period	4,521	5,506
Business Acquisition		82
Effect of exchange rates changes	(314)	(1,067)
Balance, end of the period	4,207	4,521
Other Countries [Member]
Goodwill [Line Items]
Balance, beginning of the period	1,343	1,405
Business Acquisition		48
Effect of exchange rates changes	(50)	(110)
Balance, end of the period	$ 1,293	$ 1,343

Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 350

-SubTopic 20

-Section 50

-Paragraph 1

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Amount of increase in asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized resulting from a business combination.

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Amount of increase (decrease) from foreign currency translation adjustments and purchase accounting adjustments of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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