Acquisitions | Estimated Purchase Price Allocation (Details) - USD ($) $ in Thousands	Oct. 31, 2017	Feb. 27, 2017	Jan. 31, 2017
Business Acquisition
Goodwill	$ 842,223		$ 199,021
TS
Business Acquisition
Cash		$ 176,000
Accounts receivable		1,836,000
Inventories		233,000
Prepaid expenses and other current assets		107,000
Property and equipment, net		62,000
Goodwill		609,000
Intangible assets		941,000
Other assets, net		177,000
Total assets		4,141,000
Other current liabilities		1,184,000
Revolving credit loans and long-term debt		134,000
Other long-term liabilities		106,000
Total liabilities		1,424,000
Estimated purchase price		$ 2,717,000