Goodwill and Acquired Intangible Assets - Additional Information (Details) - USD ($)	3 Months Ended
	Apr. 30, 2022	Apr. 30, 2021	Jan. 31, 2022
Finite Lived Intangible Assets [Line Items]
Goodwill	$ 72,855,000		$ 74,466,000
Goodwill impairment	0	$ 0
Acquired intangible assets	16,416,000
Cost of Revenue
Finite Lived Intangible Assets [Line Items]
Acquired intangible assets amortization	$ 1,500,000	$ 900,000