Revenue Recognition - Narrative (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Oct. 31, 2025	Oct. 31, 2024	Oct. 31, 2025	Oct. 31, 2024	Jan. 31, 2025
Capitalized Contract Cost [Line Items]
Amortization period (in years)	5 years		5 years
Capitalized costs to obtain customer contracts	$ 157,000		$ 157,000		$ 141,600
Amortization of costs to obtain customer contracts	16,300	$ 12,100	41,300	$ 35,900
Revenue recognized previously included in deferred revenue balance			321,100
Contract assets	10,400		10,400		1,900
Total revenue	219,068	200,689	636,608	593,855
UNITED STATES
Capitalized Contract Cost [Line Items]
Total revenue	120,600	$ 108,700	333,600	$ 323,600
Prepaid expenses and other current assets
Capitalized Contract Cost [Line Items]
Capitalized costs to obtain customer contracts	53,600		53,600		39,400
Other noncurrent assets
Capitalized Contract Cost [Line Items]
Capitalized costs to obtain customer contracts	$ 103,400		$ 103,400		$ 102,200