Composition of certain financial statement captions - Schedule of Property and Equipment (Detail) - USD ($) $ in Thousands	9 Months Ended
Oct. 31, 2020	Jan. 31, 2020
Property, Plant and Equipment [Line Items]
Property and equipment	$ 61,825	$ 50,038
Less accumulated depreciation and amortization	(42,665)	(35,551)
Property and equipment — net	$ 19,160	14,487
PhreesiaPads and Arrivals Stations
Property, Plant and Equipment [Line Items]
Useful life (years)	3 years
Property and equipment	$ 29,857	26,389
Computer equipment
Property, Plant and Equipment [Line Items]
Useful life (years)	3 years
Property and equipment	$ 25,990	18,394
Computer software
Property, Plant and Equipment [Line Items]
Useful life (years)	3 years
Property and equipment	$ 3,010	2,297
Hardware development
Property, Plant and Equipment [Line Items]
Useful life (years)	3 years
Property and equipment	$ 1,024	1,024
Furniture and fixtures
Property, Plant and Equipment [Line Items]
Useful life (years)	7 years
Property and equipment	$ 743	743
Leasehold improvements
Property, Plant and Equipment [Line Items]
Useful life (years)	2 years
Property and equipment	$ 1,201	$ 1,191

Amount of accumulated depreciation, depletion and amortization for physical assets used in the normal conduct of business to produce goods and services.

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Amount before accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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-Section 50
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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Amount after accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business to produce goods and services and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition

Useful life of long lived, physical assets used in the normal conduct of business and not intended for resale, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Examples include, but not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment.

+ References

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