Inventories (Tables)

6 Months Ended

Jul. 31, 2015

Inventory Disclosure [Abstract]

Schedule of inventories

	July 31, 2015		July 31, 2014		January 31, 2015
	(In thousands)
Finished goods	$	600,529	$	524,350	$	417,332
Raw materials and work-in-process		4,685		9,836		8,848
	$	605,214	$	534,186	$	426,180