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DOCUMENT AND ENTITY INFORMATION - shares
9 Months Ended
Sep. 30, 2020
Nov. 06, 2020
Document Type 10-Q  
Amendment Flag false  
Document Period End Date Sep. 30, 2020  
Document Fiscal Year Focus 2020  
Document Fiscal Period Focus Q3  
Entity Registrant Name Bimini Capital Management, Inc.  
Entity Central Index Key 0001275477  
Entity Current Reporting Status Yes  
Current Fiscal Year End Date --12-31  
Entity Filer Category Non-accelerated Filer  
Entity Small Business true  
Entity Emerging Growth Company false  
Entity Shell Company false  
EntityInteractiveDataCurrent Yes  
Class A Common Stock [Member]    
Entity Common Stock Shares Outstanding   11,608,555
Class B Common Stock [Member]    
Entity Common Stock Shares Outstanding   31,938
Class C Common Stock [Member]    
Entity Common Stock Shares Outstanding   31,938