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Intangible Assets (Detail) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2017
Dec. 31, 2016
Intangible Assets [Line Items]    
Indefinite lived intangible assets - Trade names, trademarks and distribution rights $ 125,194 $ 120,288
Finite lived intangible assets:    
Accumulated amortization (38,332) (33,437)
Finite lived intangible assets, net 35,871 38,276
Intangible assets, net 161,065 158,564
Customer Relationships    
Finite lived intangible assets:    
Finite lived intangible assets $ 73,053 70,194
Customer Relationships | Minimum    
Intangible Assets [Line Items]    
Finite lived intangible assets, Estimated Useful lives, years 10 years  
Customer Relationships | Maximum    
Intangible Assets [Line Items]    
Finite lived intangible assets, Estimated Useful lives, years 15 years  
Trade Name    
Intangible Assets [Line Items]    
Finite lived intangible assets, Estimated Useful lives, years 10 years  
Finite lived intangible assets:    
Finite lived intangible assets $ 1,150 1,150
Non-compete Agreements    
Intangible Assets [Line Items]    
Finite lived intangible assets, Estimated Useful lives, years 7 years  
Finite lived intangible assets:    
Finite lived intangible assets   $ 369