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Goodwill and Intangible Assets - Additional Information (Detail)
$ in Thousands
Jan. 31, 2018
USD ($)
Goodwill [Line Items]  
Goodwill $ 259,085
Direct Marketing  
Goodwill [Line Items]  
Goodwill 259,100
Customer Relationships  
Goodwill [Line Items]  
Intangible assets $ 186,600
Estimated useful life 15 years
Trademarks and Trade Names  
Goodwill [Line Items]  
Intangible assets $ 20,200
Estimated useful life 3 years