Significant Accounting Policies - Additional Information (Details) - USD ($) $ in Thousands	3 Months Ended
	Apr. 30, 2021	Apr. 30, 2020	Jan. 31, 2021
Significant Accounting Policies [Line Items]
Subscriptions revenue contracts term	3 years
Accounts receivable, net of allowances	$ 150,352		$ 196,009
Short-term unbilled receivable	24,000		24,200
Revenue expected to be recognized from remaining performance obligation	972,900
Revenue recognized from performance obligations satisfied in prior periods	900
Revenue recognized from deferred revenue	$ 133,500	$ 83,300
Deferred commission, amortization period	5 years
Capitalized commission costs	$ 4,700	2,000
Amortization of deferred commissions	$ 4,213	$ 3,162
Variable Interest Entity, Primary Beneficiary
Significant Accounting Policies [Line Items]
Ownership percentage	51.00%
Maximum
Significant Accounting Policies [Line Items]
Payment terms of customers	30 days
Other Assets
Significant Accounting Policies [Line Items]
Long-term unbilled receivables	$ 6,100		$ 7,100