Quarterly report pursuant to Section 13 or 15(d)

Cover

v3.23.3
Cover - shares
 9 Months Ended
Sep. 30, 2023
Nov. 10, 2023
Cover [Abstract]    
Document Type 10-Q  
Amendment Flag false  
Document Quarterly Report true  
Document Transition Report false  
Document Period End Date Sep. 30, 2023  
Document Fiscal Period Focus Q3  
Document Fiscal Year Focus 2023  
Current Fiscal Year End Date --12-31  
Entity File Number 000-55323  
Entity Registrant Name Mentor Capital, Inc.  
Entity Central Index Key 0001599117  
Entity Tax Identification Number 77-0395098  
Entity Incorporation, State or Country Code DE  
Entity Address, Address Line One 5964 Campus Court  
Entity Address, City or Town Plano  
Entity Address, State or Province TX  
Entity Address, Postal Zip Code 75093  
City Area Code (760)  
Local Phone Number 788-4700  
Entity Current Reporting Status Yes  
Entity Interactive Data Current Yes  
Entity Filer Category Non-accelerated Filer  
Entity Small Business true  
Entity Emerging Growth Company true  
Elected Not To Use the Extended Transition Period false  
Entity Shell Company false  
Entity Common Stock, Shares Outstanding   22,686,105