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Significant Accounting and Reporting Policies - Schedule of Self Insurance Retention Levels (Details) $ / occurence in Thousands | 12 Months Ended
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Jun. 03, 2017 $ / occurence
Accounting Policies [Abstract] |
General liability and auto liability/physical damage | 1,000
Workers' compensation and property | 750

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- Definition Self Insurance, Retention Level, General Liability and Auto Liability and Physical Damage + References No definition available. + Details
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Period Type: | duration

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- Definition Self Insurance, Retention Level, Workers Compensation and Property + References No definition available. + Details
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Namespace Prefix: | mlhr_
Data Type: | us-types:perUnitItemType
Balance Type: | na
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- References No definition available. + Details
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Namespace Prefix: | us-gaap_
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Balance Type: | na
Period Type: | duration