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v3.23.1

Note 12 - Income Taxes - Valuation Allowance for Deferred Tax Assets (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Mar. 31, 2023 | Mar. 31, 2022 | Mar. 31, 2021
Beginning balance | $ 708 | $ 404 | $ 391
Additions charged to income tax expense and other accounts | 567 | 304 | 13
Deductions from reserves | (693) | 0 | 0
Ending balance | $ 582 | $ 708 | $ 404

X
- Definition Amount of decrease in the valuation allowance for a specified deferred tax asset. + References No definition available. + Details
Name: | mlab_ValuationAllowanceDeferredTaxAssetDecreaseAmount
Namespace Prefix: | mlab_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Amount of increase in the valuation allowance for a specified deferred tax asset. + References No definition available. + Details
Name: | mlab_ValuationAllowanceDeferredTaxAssetIncreaseAmount
Namespace Prefix: | mlab_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Amount of deferred tax assets for which it is more likely than not that a tax benefit will not be realized. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 740 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (c) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482685/740-10-50-2 + Details
Name: | us-gaap_DeferredTaxAssetsValuationAllowance
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant