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Intangible Assets - Narrative (Details) - USD ($)
$ in Millions
3 Months Ended 12 Months Ended
Dec. 31, 2014
Dec. 31, 2016
Dec. 31, 2015
Dec. 31, 2014
Finite-Lived Intangible Assets [Line Items]        
Weighted-average useful life   8 years 1 month 6 days    
Amortization expense of intangible assets   $ 6.9 $ 6.2 $ 7.2
Impairment charge for trade name $ 0.9      
Customer relationships        
Finite-Lived Intangible Assets [Line Items]        
Weighted-average useful life   15 years    
Technology use        
Finite-Lived Intangible Assets [Line Items]        
Weighted-average useful life   15 years    
Capitalized software        
Finite-Lived Intangible Assets [Line Items]        
Weighted-average useful life   6 years 3 months 18 days