XML 19 R55.htm IDEA: XBRL DOCUMENT v2.4.1.9

Note 8 - Employee Benefit Plans (Details) (USD $)	12 Months Ended
	Mar. 31, 2015	Mar. 31, 2014	Mar. 31, 2013
Note 8 - Employee Benefit Plans (Details) [Line Items]
Defined Contribution Plan Age of Employees Covered	21mlab_DefinedContributionPlanAgeOfEmployeesCovered
Defined Contribution Plan Service Time of Employees Covered	1 hour
Defined Contribution Plan, Employer Matching Contribution, Percent of Match	50.00%us-gaap_DefinedContributionPlanEmployerMatchingContributionPercentOfMatch
Defined Contribution Plan, Employer Matching Contribution, Percent of Employees' Gross Pay	6.00%us-gaap_DefinedContributionPlanEmployerMatchingContributionPercent
Defined Contribution Plan, Cost Recognized (in Dollars)	$ 330,000us-gaap_DefinedContributionPlanCostRecognized	$ 214,000us-gaap_DefinedContributionPlanCostRecognized	$ 214,000us-gaap_DefinedContributionPlanCostRecognized
Bozeman [Member]
Note 8 - Employee Benefit Plans (Details) [Line Items]
Defined Contribution Plan Age of Employees Covered	21mlab_DefinedContributionPlanAgeOfEmployeesCovered / us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis = mlab_BozemanMember
Defined Contribution Plan Service Time of Employees Covered	1 year
Defined Contribution Plan, Employer Matching Contribution, Percent of Match	4.00%us-gaap_DefinedContributionPlanEmployerMatchingContributionPercentOfMatch / us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis = mlab_BozemanMember
Defined Contribution Plan, Employer Matching Contribution, Percent of Employees' Gross Pay	100.00%us-gaap_DefinedContributionPlanEmployerMatchingContributionPercent / us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis = mlab_BozemanMember

X

- Definition

Represents the eligible age of employees to participate in the defined contribution plan.

+ References

No definition available.

+ Details

Name:	mlab_DefinedContributionPlanAgeOfEmployeesCovered
Namespace Prefix:	mlab_
Data Type:	xbrli:positiveIntegerItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Represents the service time of employees to participate in the defined contribution plan.

+ References

No definition available.

+ Details

Name:	mlab_DefinedContributionPlanServiceTimeOfEmployeesCovered
Namespace Prefix:	mlab_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

X

- Details

Name:	mlab_Note8EmployeeBenefitPlansDetailsLineItems
Namespace Prefix:	mlab_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

The amount of the cost recognized during the period for defined contribution plans.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 715

-SubTopic 70

-Section 50

-Paragraph 1

-URI http://asc.fasb.org/extlink&oid=49170846&loc=d3e28014-114942

+ Details

Name:	us-gaap_DefinedContributionPlanCostRecognized
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- Definition

Percentage of employees' gross pay for which the employer contributes a matching contribution to a defined contribution plan.

+ References

No definition available.

+ Details

Name:	us-gaap_DefinedContributionPlanEmployerMatchingContributionPercent
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Percentage employer matches of the employee's percentage contribution matched.

+ References

No definition available.

+ Details

Name:	us-gaap_DefinedContributionPlanEmployerMatchingContributionPercentOfMatch
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

X

- Details

Name:	us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis=mlab_BozemanMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: