XML 83 R41.htm IDEA: XBRL DOCUMENT
v3.2.0.727

Intangible Assets and Goodwill - Narrative - Goodwill Related to Purchase of Business (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
May. 03, 2014 | Apr. 27, 2013
Business Acquisition [Line Items] |  |
Goodwill increase attributable to acquisitions | $ 0.0 | $ 0.8
Hetronic Italy |  |
Business Acquisition [Line Items] |  |
Goodwill increase attributable to acquisitions |  | $ 0.8

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

X
- Definition Amount of increase in asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized resulting from a business combination. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13816-109267 + Details
Name: | us-gaap_GoodwillAcquiredDuringPeriod
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Details
Name: | us-gaap_BusinessAcquisitionAxis=mei_HetronicSouthEuropeSRLMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |