Leases - Schedule of Lease Cost Included In Operating Expenses in Condensed Consolidated Statements of Operations (Details) - USD ($) $ in Thousands		3 Months Ended		9 Months Ended
		Oct. 31, 2021	Oct. 31, 2020	Oct. 31, 2021	Oct. 31, 2020
Finance lease cost:
Amortization of finance lease right-of-use assets		$ 13,366	$ 14,102	$ 39,516	$ 41,027
Interest on finance lease liabilities		913	1,416	3,128	4,440
Operating lease cost, gross		13,295	13,552	40,817	40,095
Variable lease cost, gross		2,269	2,180	6,647	7,074
Sublease income		(2,472)	(2,707)	(8,692)	(7,888)
Total lease cost	[1]	$ 27,371	$ 28,543	$ 81,416	$ 84,748

[1] Short-term lease cost was not material for the periods presented and is not included in the table above.