SUPPLEMENTAL CONDENSED CONSOLIDATED FINANCIAL STATEMENT INFORMATION - Supplemental Information Regarding Condensed Consolidated Cash Flows (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
	Oct. 31, 2021	Oct. 31, 2021	Oct. 31, 2020
Condensed Financial Information Disclosure [Abstract]
Cash paid for interest		$ 9,150	$ 18,116
Cash payments of income taxes, net		37,371	18,133
Cash payments for operating leases		14,854	15,478
Finance leases of property and equipment		4,276	841
Liabilities for contingent consideration in business combinations		900	0
Accrued but unpaid purchases of property and equipment		479	1,055
Settlement of Future Tranche Right upon issuance of Series B Preferred Stock		36,962	0
Retirement of treasury stock	$ 0	234,997	0
Settlement of convertible note premium with common stock		59,131	0
Receipt of common stock from the counterparties under the Note Hedges		$ 59,651	$ 0