Description Of The Business	3 Months Ended
Jul. 31, 2022
Description Of The Business [Abstract]
Description of the Business	Note A - Description of the Business SigmaTron International, Inc., its subsidiaries, foreign enterprises and international procurement office (collectively, the “Company”) operate in two reportable segments as an independent provider of electronic manufacturing services (“EMS”) and a provider of products to the Pet Tech market. The EMS segment includes printed circuit board assemblies, electro-mechanical subassemblies and completely assembled (box-build) electronic products. The Pet Tech reportable segment offers electronic products such as the Freedom Smart Dog Collar™, a wireless geo-mapped fence and wellness system, along with apparel and accessories. In connection with the production of assembled products, the EMS segment also provides services to its customers, including (1) automatic and manual assembly and testing of products; (2) material sourcing and procurement; (3) manufacturing and test engineering support; (4) design services; (5) warehousing and distribution services; (6) assistance in obtaining product approval from governmental and other regulatory bodies and (7) compliance reporting. The EMS segment produces the Freedom Smart Dog Collar™ sold by the Pet Tech segment.

The entire disclosure for the nature of an entity's business, major products or services, principal markets including location, and the relative importance of its operations in each business and the basis for the determination, including but not limited to, assets, revenues, or earnings. For an entity that has not commenced principal operations, disclosures about the risks and uncertainties related to the activities in which the entity is currently engaged and an understanding of what those activities are being directed toward.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 275
-SubTopic 10
-Section 50
-Paragraph 1
-Subparagraph (a)
-URI https://asc.fasb.org/extlink&oid=99393423&loc=d3e5967-108592

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 275
-URI https://asc.fasb.org/topic&trid=2134479

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