REVENUE RECOGNITION - Textuals (Details) - USD ($) $ in Thousands	12 Months Ended
	Jan. 31, 2020	Jan. 31, 2019
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Customer refund liabilities	$ 233,418	$ 243,589
Contract liability	5,900	6,400
Revenue recognized related to contract liabilities	6,300
Contract assets	0	0
Impact of Adoption of ASC 606
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Reduction in stockholders equity		53,700
Customer refund liabilities	$ 233,400	$ 243,600