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Note 2 - Summary of Significant Accounting Policies (Tables)
9 Months Ended
Sep. 30, 2017
Notes Tables  
Schedule of Cash and Cash Equivalents [Table Text Block]
   
DECEMBER
31, 2016
   
SEPTEMBER
30, 2017
 
Biolargo, Inc. and wholly owned subsidiaries
  $
1,671,857
    $
431,034
 
                 
Clyra Medical Technologies, Inc.
   
238,296
     
820,917
 
                 
Total
  $
1,910,153
    $
1,251,951