v3.8.0.1
Document and Entity Information - USD ($)
12 Months Ended
Dec. 31, 2017
Mar. 16, 2018
Jun. 30, 2017
Document And Entity Information      
Entity Registrant Name POSITIVEID Corp    
Entity Central Index Key 0001347022    
Document Type 10-K    
Document Period End Date Dec. 31, 2017    
Amendment Flag false    
Current Fiscal Year End Date --12-31    
Entity a Well-known Seasoned Issuer No    
Entity a Voluntary Filer No    
Entity's Reporting Status Current Yes    
Entity Filer Category Smaller Reporting Company    
Entity Public Float     $ 354,970
Entity Common Stock, Shares Outstanding   3,098,141,085  
Trading Symbol PSID    
Document Fiscal Period Focus FY    
Document Fiscal Year Focus 2017