v2.4.0.6
Document And Entity Information
3 Months Ended
Mar. 31, 2012
May 09, 2012
Document and Entity Information [Abstract]    
Entity Registrant Name Dorchester Minerals, L.P.  
Document Type 10-Q  
Current Fiscal Year End Date --12-31  
Entity Common Stock, Shares Outstanding   30,675,431
Amendment Flag false  
Entity Central Index Key 0001172358  
Entity Current Reporting Status Yes  
Entity Voluntary Filers No  
Entity Filer Category Large Accelerated Filer  
Entity Well-known Seasoned Issuer No  
Document Period End Date Mar. 31, 2012  
Document Fiscal Year Focus 2012  
Document Fiscal Period Focus Q1