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Segment Information and Geographic Area Information - Narrative (Details) | 12 Months Ended
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May 02, 2020
Segment Reporting [Abstract] |
Reportable segments description | Prior to the acquisition, the Company's reportable segments were Automotive, Power, Interface and Other. As a result of this change, the Company's reportable segments are now Automotive, Industrial, Interface and Medical.

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- Definition Reportable segments description. + References No definition available. + Details
Name: | mei_ReportableSegmentsDescription
Namespace Prefix: | mei_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- References No definition available. + Details
Name: | us-gaap_SegmentReportingAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration