Quarterly report pursuant to Section 13 or 15(d)

Document And Entity Information

v3.22.2.2
Document And Entity Information - shares
 9 Months Ended
Sep. 30, 2022
Nov. 10, 2022
Document Information [Line Items]    
Entity Registrant Name PRINCETON CAPITAL CORP  
Document Type 10-Q  
Current Fiscal Year End Date --12-31  
Entity Common Stock, Shares Outstanding   120,486,061
Amendment Flag false  
Entity Central Index Key 0000845385  
Entity Current Reporting Status Yes  
Entity Filer Category Non-accelerated Filer  
Document Period End Date Sep. 30, 2022  
Document Fiscal Year Focus 2022  
Document Fiscal Period Focus Q3  
Entity Small Business false  
Entity Emerging Growth Company false  
Entity Shell Company false  
Document Quarterly Report true  
Document Transition Report false  
Securities Act File Number 814-00710  
Entity Incorporation, State or Country Code MD  
Entity Tax Identification Number 46-3516073  
Entity Address, Address Line One 800 Turnpike Street  
Entity Address, Address Line Two Suite 300  
Entity Address, City or Town North Andover  
Entity Address, State or Province MA  
Entity Address, Postal Zip Code 01845  
City Area Code (978)  
Local Phone Number 794-3366  
Entity Interactive Data Current Yes