Schedule II: Valuation and Qualifying Accounts (Details) - SEC Schedule, 12-09, Valuation Allowance, Deferred Tax Asset - USD ($) $ in Thousands	12 Months Ended
	Jan. 31, 2024	Jan. 31, 2023	Jan. 31, 2022
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]
SEC Schedule, 12-09, Valuation Allowances and Reserves, Amount, Beginning Balance	$ 159,470	$ 115,839	$ 74,870
SEC Schedule, 12-09, Valuation Allowances and Reserves, Additions, Charge to Cost and Expense	168,915	43,631	40,969
SEC Schedule, 12-09, Valuation Allowances and Reserves, Deduction	0	0	0
SEC Schedule, 12-09, Valuation Allowances and Reserves, Amount, Ending Balance	$ 328,385	$ 159,470	$ 115,839