Description of the Business	12 Months Ended
Apr. 30, 2012
Description of the Business And Summary of the Significant Accounting Policies [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 one business segment as an independent provider of electronic manufacturing services (“EMS”), which includes printed circuit board assemblies and completely assembled (box-build) electronic products. In connection with the production of assembled products, the Company also provides services to its customers including (1) automatic and manual assembly and testing of products; (2) material sourcing and procurement; (3) design, manufacturing and test engineering support; (4) warehousing and shipment services; and (5) assistance in obtaining product approval from governmental and other regulatory bodies. As of April 30, 2012, the Company provided these manufacturing services through an international network of facilities located in North America, China and Taiwan. Approximately 10% of the total consolidated assets of the Company are located in foreign jurisdictions outside the United States as of April 30, 2012 and 2011.

Description of the Business

12 Months Ended

Apr. 30, 2012

Description of the Business And Summary of the Significant Accounting Policies [Abstract]

NOTE A—DESCRIPTION OF THE BUSINESS

SigmaTron International, Inc., its subsidiaries, foreign enterprises and international procurement office (collectively, the “Company”) operate in one business segment as an independent provider of electronic manufacturing services (“EMS”), which includes printed circuit board assemblies and completely assembled (box-build) electronic products. In connection with the production of assembled products, the Company also provides services to its customers including (1) automatic and manual assembly and testing of products; (2) material sourcing and procurement; (3) design, manufacturing and test engineering support; (4) warehousing and shipment services; and (5) assistance in obtaining product approval from governmental and other regulatory bodies. As of April 30, 2012, the Company provided these manufacturing services through an international network of facilities located in North America, China and Taiwan. Approximately 10% of the total consolidated assets of the Company are located in foreign jurisdictions outside the United States as of April 30, 2012 and 2011.