XML 17 R1.htm IDEA: XBRL DOCUMENT v3.21.1
Document And Entity Information - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2020
Mar. 29, 2021
Jun. 30, 2020
Document Information [Line Items]      
Entity Central Index Key 0001080657    
Entity Registrant Name Presidio Property Trust, Inc.    
Amendment Flag false    
Current Fiscal Year End Date --12-31    
Document Fiscal Period Focus FY    
Document Fiscal Year Focus 2020    
Document Type 10-K    
Document Annual Report true    
Document Period End Date Dec. 31, 2020    
Document Transition Report false    
Entity File Number 000-53673    
Entity Incorporation, State or Country Code MD    
Entity Tax Identification Number 33-0841255    
Entity Address, Address Line One 4995 Murphy Canyon Road, Suite 300    
Entity Address, City or Town San Diego    
Entity Address, State or Province CA    
Entity Address, Postal Zip Code 92123    
City Area Code 760    
Local Phone Number 471-8536    
Title of 12(b) Security Series A Common Stock, $0.01 par value per share    
Trading Symbol SQFT    
Security Exchange Name NASDAQ    
Entity Well-known Seasoned Issuer No    
Entity Voluntary Filers Yes    
Entity Current Reporting Status Yes    
Entity Interactive Data Current Yes    
Entity Filer Category Non-accelerated Filer    
Entity Small Business true    
Entity Emerging Growth Company false    
Entity Shell Company false    
Entity Public Float     $ 0
Entity Common Stock, Shares Outstanding   9,889,051