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Document And Entity Information - shares
 3 Months Ended
Jun. 30, 2015
Jul. 27, 2015
Document and Entity Information [Abstract]    
Entity Registrant Name MESA LABORATORIES INC /CO  
Document Type 10-Q  
Current Fiscal Year End Date --03-31  
Entity Common Stock, Shares Outstanding   3,593,257
Amendment Flag false  
Entity Central Index Key 0000724004  
Entity Current Reporting Status Yes  
Entity Voluntary Filers No  
Entity Filer Category Accelerated Filer  
Entity Well-known Seasoned Issuer No  
Document Period End Date Jun. 30, 2015  
Document Fiscal Year Focus 2016  
Document Fiscal Period Focus Q1