Quarterly report pursuant to Section 13 or 15(d)

SELF STORAGE PROPERTY ACQUISITIONS - Pro Forma Information (Details)

v3.4.0.3
SELF STORAGE PROPERTY ACQUISITIONS - Pro Forma Information (Details)
$ in Thousands
3 Months Ended
Mar. 31, 2016
USD ($)
property
Mar. 31, 2015
USD ($)
property
Dec. 31, 2015
Business Acquisition, Pro Forma Information, Nonrecurring Adjustment [Line Items]      
Number of Businesses Acquired | property 17 6  
Number of Businesses Acquired for which Pro Forma Financial Information is Available | property 15 5  
Pro forma revenue $ 45,193 $ 34,348  
Pro forma net income (loss) 7,575 (4,329)  
Pro forma net income (loss) 1,288 599  
Subsequent Acquisitions [Member]      
Business Acquisition, Pro Forma Information, Nonrecurring Adjustment [Line Items]      
Pro forma revenue 4,702 4,212  
Pro forma net income (loss) 1,181 (741)  
2016 Acquisitions [Member]      
Business Acquisition, Pro Forma Information, Nonrecurring Adjustment [Line Items]      
Pro forma revenue 842 1,759  
Pro forma net income (loss) 1,592 (1,708)  
2015 Acquisitions [Member]      
Business Acquisition, Pro Forma Information, Nonrecurring Adjustment [Line Items]      
Pro forma revenue 0 86  
Pro forma net income (loss) 0 891  
Consolidated Entities Excluding Acquirees [Member]      
Business Acquisition, Pro Forma Information, Nonrecurring Adjustment [Line Items]      
Pro forma revenue 39,649 28,291  
Pro forma net income (loss) $ 4,802 $ (2,771)  
Credit Facility [Member] | Line of Credit [Member] | Revolving line of credit [Member]      
Business Acquisition, Pro Forma Information, Nonrecurring Adjustment [Line Items]      
Effective interest rate 2.04%   2.04%