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    <Log type="Info">Element us-gaap_LongTermDebt had a mix of decimals attribute values: -3 0.</Log>
    <Log type="Info">Element us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRateMaximum had a mix of decimals attribute values: 2 3.</Log>
    <Log type="Info">Element us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRateMinimum had a mix of decimals attribute values: 2 3.</Log>
    <Log type="Info">'Monetary' elements on report '4040 - Disclosure - Property, Plant and Equipment (Details)' had a mix of different decimal attribute values.</Log>
    <Log type="Info">'Monetary' elements on report '4051 - Disclosure - Goodwill and Intangible Assets (Details 2)' had a mix of different decimal attribute values.</Log>
    <Log type="Info">'Monetary' elements on report '4090 - Disclosure - Stock-based Compensation (Details)' had a mix of different decimal attribute values.</Log>
    <Log type="Info">'Monetary' elements on report '4100 - Disclosure - Income Taxes (Details)' had a mix of different decimal attribute values.</Log>
    <Log type="Info">Process Flow-Through: 0010 - Statement - Balance Sheets</Log>
    <Log type="Info">	Process Flow-Through: Removing column 'Mar. 31, 2011'</Log>
    <Log type="Info">	Process Flow-Through: Removing column 'Mar. 31, 2010'</Log>
    <Log type="Info">Process Flow-Through: 0015 - Statement - Balance Sheets (Parenthetical)</Log>
    <Log type="Info">	Process Flow-Through: Removing column 'Oct. 02, 2012'</Log>
    <Log type="Info">Process Flow-Through: 0020 - Statement - Statements of Income</Log>
    <Log type="Info">	Process Flow-Through: Removing column '3 Months Ended
Mar. 31, 2013'</Log>
    <Log type="Info">	Process Flow-Through: Removing column '3 Months Ended
Dec. 31, 2012'</Log>
    <Log type="Info">	Process Flow-Through: Removing column '3 Months Ended
Sep. 30, 2012'</Log>
    <Log type="Info">	Process Flow-Through: Removing column '3 Months Ended
Jun. 30, 2012'</Log>
    <Log type="Info">	Process Flow-Through: Removing column '3 Months Ended
Mar. 31, 2012'</Log>
    <Log type="Info">	Process Flow-Through: Removing column '3 Months Ended
Dec. 31, 2011'</Log>
    <Log type="Info">	Process Flow-Through: Removing column '3 Months Ended
Sep. 30, 2011'</Log>
    <Log type="Info">	Process Flow-Through: Removing column '3 Months Ended
Jun. 30, 2011'</Log>
    <Log type="Info">	Process Flow-Through: Removing column '3 Months Ended
Mar. 31, 2011'</Log>
    <Log type="Info">	Process Flow-Through: Removing column '3 Months Ended
Dec. 31, 2010'</Log>
    <Log type="Info">	Process Flow-Through: Removing column '3 Months Ended
Sep. 30, 2010'</Log>
    <Log type="Info">	Process Flow-Through: Removing column '3 Months Ended
Jun. 30, 2010'</Log>
    <Log type="Info">Process Flow-Through: 0035 - Statement - STATEMENTS OF STOCKHOLDERS' EQUITY (Parenthetical)</Log>
    <Log type="Info">Process Flow-Through: 0040 - Statement - Statements of Cash Flows</Log>
    <Log type="Info">Process Flow-Through: 0045 - Statement - Statements of Cash Flows (Parenthetical)</Log>
    <Log type="Info">	Process Flow-Through: Removing column 'Dec. 21, 2010'</Log>
  </Logs>
  <InputFiles>
    <File>mlab-20130331.xml</File>
    <File>mlab-20130331.xsd</File>
    <File>mlab-20130331_cal.xml</File>
    <File>mlab-20130331_def.xml</File>
    <File>mlab-20130331_lab.xml</File>
    <File>mlab-20130331_pre.xml</File>
  </InputFiles>
  <SupplementalFiles />
  <BaseTaxonomies />
  <HasPresentationLinkbase>true</HasPresentationLinkbase>
  <HasCalculationLinkbase>true</HasCalculationLinkbase>
</FilingSummary>
