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Business Combinations, Goodwill and Intangible Assets (Narrative I) (Details) - USD ($)
$ in Thousands
 2 Months Ended 3 Months Ended 6 Months Ended
Apr. 22, 2015
Apr. 01, 2015
Jun. 30, 2015
Jun. 30, 2015
Jun. 30, 2015
Metros Cubicos, S.A. de C.V. [Member]          
Business Acquisition [Line Items]          
Percentage of acquisition 100.00%        
Aggregate purchase price for acquisition $ 29,917        
Business acquisition, cash paid 26,917        
Amount in escrow account 3,000        
Net revenues     $ 831    
Net income (loss)     296    
Intangible assets 8,721        
Metros Cubicos, S.A. de C.V. [Member] | Customer Lists [Member]          
Business Acquisition [Line Items]          
Intangible assets $ 3,924        
Amortized period, years         5 years
Metros Cubicos, S.A. de C.V. [Member] | Non-Compete / Solicitation Agreement [Member]          
Business Acquisition [Line Items]          
Amortized period, years         3 years
KPL Soluções Ltda [Member]          
Business Acquisition [Line Items]          
Percentage of acquisition   100.00%      
Aggregate purchase price for acquisition   $ 22,685      
Business acquisition, cash paid   12,529      
Additional contingent consideration   6,840      
Contingent consideration arrangements, performance measurement period         24 months
Additional payments trasferred after two years   1,584      
Additional payment expense period         24 months
Amount in escrow account   3,316      
Net revenues       $ 838  
Net income (loss)       299  
Fair value of contingent consideration     $ 7,158 $ 7,158 $ 7,158
Intangible assets   8,433      
Amortized period, years         5 years
KPL Soluções Ltda [Member] | Customer Lists [Member]          
Business Acquisition [Line Items]          
Intangible assets   $ 3,137