Quarterly report pursuant to Section 13 or 15(d)

Document And Entity Information

v3.21.1
Document And Entity Information - shares
3 Months Ended
Mar. 31, 2021
Apr. 26, 2021
Document Type 10-Q  
Document Quarterly Report true  
Current Fiscal Year End Date --12-31  
Document Period End Date Mar. 31, 2021  
Document Fiscal Year Focus 2021  
Document Transition Report false  
Entity File Number 1-10709  
Entity Registrant Name PS BUSINESS PARKS INC/CA  
Entity Incorporation, State or Country Code CA  
Entity Tax Identification Number 95-4300881  
Entity Address, Address Line One 701 Western Avenue  
Entity Address, City or Town Glendale  
Entity Address, State or Province CA  
Entity Address, Postal Zip Code 91201-2349  
City Area Code 818  
Local Phone Number 244-8080  
Entity Current Reporting Status Yes  
Entity Interactive Data Current Yes  
Entity Filer Category Large Accelerated Filer  
Entity Small Business false  
Entity Emerging Growth Company false  
Entity Shell Company false  
Entity Common Stock, Shares Outstanding   27,529,007
Amendment Flag false  
Document Fiscal Period Focus Q1  
Entity Central Index Key 0000866368  
Common Stock [Member]    
Title of 12(b) Security Common Stock, $0.01 par value per share  
Trading Symbol PSB  
Security Exchange Name NYSE  
Series W Preferred Stock [Member]    
Title of 12(b) Security Depositary Shares Each Representing 1/1,000 of a 5.200% Cum Pref Stock, Series W, $0.01 par value  
Trading Symbol PSBPrW  
Security Exchange Name NYSE  
Series X Preferred Stock [Member]    
Title of 12(b) Security Depositary Shares Each Representing 1/1,000 of a 5.250% Cum Pref Stock, Series X, $0.01 par value  
Trading Symbol PSBPrX  
Security Exchange Name NYSE  
Series Y Preferred Stock [Member]    
Title of 12(b) Security Depositary Shares Each Representing 1/1,000 of a 5.200% Cum Pref Stock, Series Y, $0.01 par value  
Trading Symbol PSBPrY  
Security Exchange Name NYSE  
Series Z Preferred Stock [Member]    
Title of 12(b) Security Depositary Shares Each Representing 1/1,000 of a 4.875% Cum Pref Stock, Series Z, $0.01 par value  
Trading Symbol PSBPrZ  
Security Exchange Name NYSE