For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 42
-URI http://asc.fasb.org/extlink&oid=123359005&loc=d3e9054-108599

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 275
-SubTopic 10
-Section 50
-Paragraph 18
-URI http://asc.fasb.org/extlink&oid=99393423&loc=d3e6351-108592

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 825
-SubTopic 10
-Section 50
-Paragraph 20
-URI http://asc.fasb.org/extlink&oid=123594938&loc=d3e13531-108611

Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 825
-SubTopic 10
-Section 50
-Paragraph 21
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=123594938&loc=d3e13537-108611

Reference 5: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 275
-SubTopic 10
-Section 50
-Paragraph 20
-URI http://asc.fasb.org/extlink&oid=99393423&loc=d3e6404-108592

Name:	us-gaap_ConcentrationRiskPercentage1
Namespace Prefix:	us-gaap_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

Description of Business and Basis of Presentation - Additional Information (Details)	3 Months Ended		12 Months Ended
	Apr. 30, 2022	Apr. 30, 2021	Jan. 31, 2022
Credit Concentration Risk \| Accounts Receivable
Organization Consolidation And Presentation Of Financial Statements [Line Items]
Number of major customers	no		one
Credit Concentration Risk \| Accounts Receivable \| Significant Customer
Organization Consolidation And Presentation Of Financial Statements [Line Items]
Concentration risk percentage	10.00%		10.00%
Customer Concentration Risk \| Revenue
Organization Consolidation And Presentation Of Financial Statements [Line Items]
Number of major customers	No	No
Customer Concentration Risk \| Revenue \| Significant Customer
Organization Consolidation And Presentation Of Financial Statements [Line Items]
Concentration risk percentage	10.00%	10.00%
Geographic Concentration Risk \| Revenue \| United States
Organization Consolidation And Presentation Of Financial Statements [Line Items]
Concentration risk percentage	66.00%	69.00%
Geographic Concentration Risk \| Revenue \| Japan
Organization Consolidation And Presentation Of Financial Statements [Line Items]
Concentration risk percentage	19.00%	17.00%