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Fiscal Year (Details) | 3 Months Ended | 6 Months Ended
--- | --- | ---
Nov. 29, 2014 | Nov. 30, 2013 | Nov. 29, 2014 | Nov. 30, 2013
Fiscal Year [Abstract] |  |  |  |
Fiscal Period Duration, Quarter | 91 days | 91 days |  |
Fiscal Period Duration, Year |  |  | 364 days | 364 days

X
- Definition Fiscal Period Duration, Quarter + References No definition available. + Details
Name: | mlhr_FiscalPeriodDurationQuarter
Namespace Prefix: | mlhr_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition Fiscal Period Duration, Year + References No definition available. + Details
Name: | mlhr_FiscalPeriodDurationYear
Namespace Prefix: | mlhr_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | mlhr_FiscalYearAbstract
Namespace Prefix: | mlhr_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration