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Note 15 - Fair Value Measurements (Details Textual) | Sep. 30, 2016
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Infitrak Acquisition [Member] | Scenario, Forecast [Member] |
Business Combination, Contingent Consideration, Payment Installments | 2

X
- Definition Number of installments in which contingent consideration related to a business combination is payable in. + References No definition available. + Details
Name: | mlab_BusinessCombinationContingentConsiderationPaymentInstallments
Namespace Prefix: | mlab_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

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

X
- Details
Name: | us-gaap_StatementScenarioAxis=us-gaap_ScenarioForecastMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |