Intangible Assets, Net - Additional Information (Detail) - USD ($)	12 Months Ended
	Jan. 31, 2021	Jan. 31, 2020	Jan. 31, 2019	Jun. 25, 2015
Finite Lived Intangible Assets [Line Items]
Intangible assets, net of amortization expense	$ 18,703,000	$ 17,826,000
Accumulated amortization of intangible asset	6,440,000	13,477,000
Liabilities associated with noncancelable internal-use software license at net present value, current	5,582,000	4,388,000
Liabilities associated with noncancelable internal-use software license at net present value, non-current	6,259,000	8,159,000
Impairment of intangible assets	0	0	$ 0
Vis Lab SRL [Member]
Finite Lived Intangible Assets [Line Items]
Intangible assets acquired				$ 4,100,000
IPR&D [Member]
Finite Lived Intangible Assets [Line Items]
Intangible assets, net of amortization expense	4,100,000	4,100,000
Accumulated amortization of intangible asset	0	0
IPR&D [Member] | Vis Lab SRL [Member]
Finite Lived Intangible Assets [Line Items]
Intangible assets acquired				$ 4,100,000
Noncancelable software licenses [Member]
Finite Lived Intangible Assets [Line Items]
Intangible assets, net of amortization expense		14,600,000
Internal-use software licenses [Member]
Finite Lived Intangible Assets [Line Items]
Intangible assets, net of amortization expense	14,603,000	13,726,000
Accumulated amortization of intangible asset	6,440,000	13,477,000
Fully amortized software licenses retired	13,500,000
Amortization expense	$ 6,500,000	$ 5,900,000	$ 4,700,000