Acquistion of IWCO Dircet - Additional Information (Detail) - USD ($) $ in Thousands	Dec. 15, 2017	Jan. 31, 2018
Business Acquisition [Line Items]
Goodwill		$ 259,085
IWCO
Business Acquisition [Line Items]
Payments to acquire business, net of cash acquired	$ 469,200
Proceeds from term loan under financing agreement	393,000
Receivable from escrow for working capital claims	2,500
Transaction price included one-time transaction incentive awards	3,500
Transaction costs	1,500
Intangible assets	210,920
Goodwill	259,085
Trademarks and Trade Names | IWCO
Business Acquisition [Line Items]
Intangible assets	$ 20,500
Acquired finite-lived intangible assets, weighted average useful life	3 years
Customer Relationships | IWCO
Business Acquisition [Line Items]
Intangible assets	$ 190,400
Acquired finite-lived intangible assets, weighted average useful life	15 years