Quarterly report pursuant to Section 13 or 15(d)

Document and Entity Information

v2.4.1.9
Document and Entity Information
3 Months Ended
Mar. 31, 2015
Jun. 04, 2015
Entity [Abstract]    
Entity Registrant Name NATIONAL STORAGE AFFILIATES TRUST  
Entity Central Index Key 0001618563  
Current Fiscal Year End Date --12-31  
Entity Filer Category Non-accelerated Filer  
Document Type 10-Q  
Document Period End Date Mar. 31, 2015  
Document Fiscal Year Focus 2015  
Document Fiscal Period Focus Q1  
Amendment Flag false  
Entity Common Stock, Shares Outstanding   23,000,000dei_EntityCommonStockSharesOutstanding