STOCKHOLDERS' EQUITY - Schedule of Amounts Reclassified Out of Accumulated Other Comprehensive (Loss) Income (Details) - USD ($) $ in Thousands	3 Months Ended
	Apr. 30, 2022	Apr. 30, 2021
Reclassifications Out of Accumulated Other Comprehensive Income (Loss)
Research and development, net	$ (30,947)	$ (29,148)
Selling, general and administrative	(102,882)	(87,646)
Interest expense	(1,501)	(5,019)
Total, before income taxes	870	1,022
Benefit from (provision for) income taxes	(296)	72
Net income	574	1,094
Recurring
Reclassifications Out of Accumulated Other Comprehensive Income (Loss)
Cost of revenue	(41,028)	(38,076)
Nonrecurring
Reclassifications Out of Accumulated Other Comprehensive Income (Loss)
Cost of revenue	(32,068)	(29,880)
Foreign currency forward contracts | Reclassification out of Accumulated Other Comprehensive Income
Reclassifications Out of Accumulated Other Comprehensive Income (Loss)
Research and development, net	(49)	65
Selling, general and administrative	(24)	28
Total, before income taxes	(82)	106
Benefit from (provision for) income taxes	14	(19)
Net income	(68)	87
Foreign currency forward contracts | Recurring | Reclassification out of Accumulated Other Comprehensive Income
Reclassifications Out of Accumulated Other Comprehensive Income (Loss)
Cost of revenue	0	1
Foreign currency forward contracts | Nonrecurring | Reclassification out of Accumulated Other Comprehensive Income
Reclassifications Out of Accumulated Other Comprehensive Income (Loss)
Cost of revenue	(9)	12
Interest rate swap agreement | Reclassification out of Accumulated Other Comprehensive Income
Reclassifications Out of Accumulated Other Comprehensive Income (Loss)
Interest expense	0	(1,014)
Other income (expense), net	0	(15,655)
Total, before income taxes	0	(16,669)
Benefit from (provision for) income taxes	0	3,638
Net income	$ 0	$ (13,031)