Leases - ASC 842 Quantitative Information (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Oct. 31, 2025	Oct. 31, 2024	Oct. 31, 2025	Oct. 31, 2024
Leases [Abstract]
Operating lease cost	$ 2,340	$ 2,341	$ 7,057	$ 5,183
Short-term lease cost	135	172	365	406
Sublease income	(10)	(10)	(30)	(30)
Variable lease cost	705	4	1,087	622
Total lease cost	$ 3,170	$ 2,507	8,479	6,181
Cash paid for amounts included in the measurement of lease liabilities			2,943	4,881
Right-of-use assets obtained in exchange for new lease liabilities			$ 372	$ 34,309
Weighted-average remaining lease term (years)	4 years 9 months 18 days	5 years 8 months 12 days	4 years 9 months 18 days	5 years 8 months 12 days
Weighted-average discount rate	9.84%	9.80%	9.84%	9.80%