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v2.4.1.9

Note 1 - Description of Business and Summary of Significant Accounting Policies (Details) | 12 Months Ended |  |  |
--- | --- | --- | --- | ---
Mar. 31, 2015 | Mar. 31, 2014 | Oct. 01, 2012 | Sep. 30, 2012
Note 1 - Description of Business and Summary of Significant Accounting Policies (Details) [Line Items] |  |  |  |
Number of Reportable Segments | 3 us-gaap_NumberOfReportableSegments |  |  |
Number of Physical Locations in which Entity is Organized | 6 mlab_NumberOfPhysicalLocationsInWhichEntityIsOrganized |  |  |
Common Stock, Shares Authorized (in Shares) | 25,000,000 us-gaap_CommonStockSharesAuthorized | 25,000,000 us-gaap_CommonStockSharesAuthorized | 25,000,000 us-gaap_CommonStockSharesAuthorized | 8,000,000 us-gaap_CommonStockSharesAuthorized
Building [Member] | Maximum [Member] |  |  |  |
Note 1 - Description of Business and Summary of Significant Accounting Policies (Details) [Line Items] |  |  |  |
Property, Plant and Equipment, Useful Life | 40 years |  |  |
Machinery and Equipment [Member] | Maximum [Member] |  |  |  |
Note 1 - Description of Business and Summary of Significant Accounting Policies (Details) [Line Items] |  |  |  |
Property, Plant and Equipment, Useful Life | 7 years |  |  |
Computer Equipment [Member] | Maximum [Member] |  |  |  |
Note 1 - Description of Business and Summary of Significant Accounting Policies (Details) [Line Items] |  |  |  |
Property, Plant and Equipment, Useful Life | 3 years |  |  |
Geographic Concentration Risk [Member] | UNITED STATES | Sales Revenue, Net [Member] |  |  |  |
Note 1 - Description of Business and Summary of Significant Accounting Policies (Details) [Line Items] |  |  |  |
Concentration Risk, Percentage | 64.00%us-gaap_ConcentrationRiskPercentage1 / us-gaap_ConcentrationRiskByBenchmarkAxis = us-gaap_SalesRevenueNetMember / us-gaap_ConcentrationRiskByTypeAxis = us-gaap_GeographicConcentrationRiskMember / us-gaap_StatementGeographicalAxis = country_US |  |  |
Geographic Concentration Risk [Member] | Foreign Countries [Member] | Sales Revenue, Net [Member] |  |  |  |
Note 1 - Description of Business and Summary of Significant Accounting Policies (Details) [Line Items] |  |  |  |
Concentration Risk, Percentage | 36.00%us-gaap_ConcentrationRiskPercentage1 / us-gaap_ConcentrationRiskByBenchmarkAxis = us-gaap_SalesRevenueNetMember / us-gaap_ConcentrationRiskByTypeAxis = us-gaap_GeographicConcentrationRiskMember / us-gaap_StatementGeographicalAxis = mlab_ForeignCountriesMember |  |  |
Maximum [Member] |  |  |  |
Note 1 - Description of Business and Summary of Significant Accounting Policies (Details) [Line Items] |  |  |  |
Finite-Lived Intangible Asset, Useful Life | 16 years |  |  |
Minimum [Member] |  |  |  |
Note 1 - Description of Business and Summary of Significant Accounting Policies (Details) [Line Items] |  |  |  |
Finite-Lived Intangible Asset, Useful Life | 3 years |  |  |

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