Quarterly report pursuant to Section 13 or 15(d)

Cover

v3.24.3
Cover - shares
 9 Months Ended
Sep. 30, 2024
Nov. 13, 2024
Document Information [Line Items]    
Document Type 10-Q  
Document Quarterly Report true  
Document Transition Report false  
Entity Interactive Data Current Yes  
Amendment Flag false  
Document Period End Date Sep. 30, 2024  
Document Fiscal Year Focus 2024  
Document Fiscal Period Focus Q3  
Entity Information [Line Items]    
Entity Registrant Name PRINCETON CAPITAL CORPORATION  
Entity Central Index Key 0000845385  
Securities Act File Number 814-00710  
Entity Tax Identification Number 46-3516073  
Entity Incorporation, State or Country Code MD  
Current Fiscal Year End Date --12-31  
Entity Current Reporting Status Yes  
Entity Shell Company false  
Entity Filer Category Non-accelerated Filer  
Entity Small Business false  
Entity Emerging Growth Company false  
Entity Contact Personnel [Line Items]    
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  
Entity Phone Fax Numbers [Line Items]    
City Area Code (978)  
Local Phone Number 794-3366  
Entity Listings [Line Items]    
Entity Common Stock, Shares Outstanding   120,486,061