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Summary of Significant Accounting Policies - Narrative (Details)
3 Months Ended 12 Months Ended
Dec. 31, 2016
USD ($)
Dec. 31, 2015
USD ($)
Mar. 31, 2015
USD ($)
Dec. 31, 2016
USD ($)
segment
Dec. 31, 2015
USD ($)
Dec. 31, 2014
USD ($)
Schedule of Significant Accounting Policies [Line Items]            
Realized gain (loss) on foreign currency transactions       $ 600,000 $ (3,300,000) $ (800,000)
Venezuela remeasurement charges     $ 1,500,000   1,500,000  
Number of segments | segment       2    
Impairment charge   $ 37,539,000   $ 0    
Intangible asset impairment charges $ 100,000 200,000   70,000 202,000 2,710,000
Interest and penalties on unrecognized tax benefits       0 0 0
Unrecognized tax benefits 0 0   0 0 0
Advertising expense       $ 1,400,000 $ 1,000,000 $ 500,000
Minimum            
Schedule of Significant Accounting Policies [Line Items]            
Term on financing receivables       30 days    
Maximum            
Schedule of Significant Accounting Policies [Line Items]            
Term on financing receivables       90 days    
Internal Use Software            
Schedule of Significant Accounting Policies [Line Items]            
Finite-lived Intangible Assets Amortization Expense [Table Text Block]       9.2 8.6 7.2
Finite-lived intangible assets $ 26,000,000 $ 25,800,000   $ 26,000,000 $ 25,800,000  
Internal Use Software | Minimum            
Schedule of Significant Accounting Policies [Line Items]            
Useful life of intangible assets       3 years    
Internal Use Software | Maximum            
Schedule of Significant Accounting Policies [Line Items]            
Useful life of intangible assets       10 years    
Customer lists            
Schedule of Significant Accounting Policies [Line Items]            
Useful life of intangible assets       14 years    
Non-competition agreements            
Schedule of Significant Accounting Policies [Line Items]            
Useful life of intangible assets       4 years    
Trade names            
Schedule of Significant Accounting Policies [Line Items]            
Useful life of intangible assets       13 years    
Patents            
Schedule of Significant Accounting Policies [Line Items]            
Useful life of intangible assets       9 years    
Venezuelan bolívar fuerte            
Schedule of Significant Accounting Policies [Line Items]            
Rate on currency remeasurement 6.3     6.3    
Exchange rate 198     198