Annual report pursuant to Section 13 and 15(d)

Intangible Assets - Additional Information (Detail)

v3.7.0.1
Intangible Assets - Additional Information (Detail) - USD ($)
$ in Millions
 12 Months Ended
May 06, 2016
Dec. 31, 2016
Dec. 31, 2015
Dec. 31, 2014
Finite-Lived Intangible Assets [Line Items]        
Amortization of intangible assets   $ 5.2 $ 4.0 $ 5.2
Estimated future amortization expense of intangible assets, 2017   5.5    
Estimated future amortization expense of intangible assets, 2018   5.3    
Estimated future amortization expense of intangible assets, 2019   4.5    
Estimated future amortization expense of intangible assets, 2020   3.9    
Estimated future amortization expense of intangible assets, 2021   3.7    
Estimated future amortization expense of intangible assets, thereafter   20.9    
Customer relationships and product supply agreements        
Finite-Lived Intangible Assets [Line Items]        
Channel distribution agreement   $ 3.5    
TNT | Customer relationships and product supply agreements        
Finite-Lived Intangible Assets [Line Items]        
Intangible assets acquired $ 2.9      
TNT | Trademarks / Trade Names        
Finite-Lived Intangible Assets [Line Items]        
Intangible assets acquired 2.5      
TNT | Non- compete agreement        
Finite-Lived Intangible Assets [Line Items]        
Intangible assets acquired 0.3      
TNT | Customer Contracts and back log        
Finite-Lived Intangible Assets [Line Items]        
Intangible assets acquired $ 0.2