Annual report pursuant to Section 13 and 15(d)

Document and Entity Information

Document and Entity Information - USD ($)
12 Months Ended
Dec. 31, 2016
Mar. 22, 2017
Jun. 30, 2016
Document and Entity Information:      
Entity Registrant Name Mentor Capital, Inc.    
Entity Trading Symbol mntr    
Document Type 10-K    
Document Period End Date Dec. 31, 2016    
Amendment Flag false    
Entity Central Index Key 0001599117    
Current Fiscal Year End Date --12-31    
Entity Common Stock, Shares Outstanding   22,350,152  
Entity Public Float     $ 40,449,698
Entity Filer Category Smaller Reporting Company    
Entity Current Reporting Status Yes    
Entity Voluntary Filers No    
Entity Well-known Seasoned Issuer No    
Document Fiscal Year Focus 2016    
Document Fiscal Period Focus FY