Acquisition | DLT Allocation of Purchase Price (Details) - USD ($) $ in Thousands		12 Months Ended
	Nov. 25, 2019	Jan. 31, 2020	Jan. 31, 2019
Purchase Price Allocation [Line Items]
Goodwill		$ 973,257	$ 892,990
DLT
Purchase Price Allocation [Line Items]
Cash	$ 545
Accounts receivable	218,978
Prepaid expenses and other current assets	22,977
Property and equipment, net	4,207
Goodwill	82,889
Intangible Assets	226,390
Other Assets	52,539
Total assets	608,525
Other current liabilities	297,811
Revolving credit loans and long-term debt	91,026
Other long-term liabilities	9,220
Total liabilities	398,057
Estimated purchase price	210,468
Finite-lived Intangible Assets Acquired		226,400
Customer and Vendor Relationship [Member] | DLT
Purchase Price Allocation [Line Items]
Finite-lived Intangible Assets Acquired	$ 208,000	208,000
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life	15 years
Trade Names [Member] | DLT
Purchase Price Allocation [Line Items]
Finite-lived Intangible Assets Acquired	$ 18,400	$ 18,400
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life	10 years