Quarterly report pursuant to Section 13 or 15(d)

RELATED PARTY TRANSACTIONS (Details)

v3.3.0.814
RELATED PARTY TRANSACTIONS (Details)
$ in Thousands
1 Months Ended 3 Months Ended 9 Months Ended 12 Months Ended
Apr. 01, 2015
shares
Jan. 01, 2015
property
Jan. 31, 2015
property
Sep. 30, 2015
USD ($)
ft²
property
Jun. 30, 2015
USD ($)
property
Mar. 31, 2015
USD ($)
property
Sep. 30, 2014
USD ($)
Sep. 30, 2015
USD ($)
ft²
property
Sep. 30, 2014
USD ($)
Dec. 31, 2014
USD ($)
property
Jul. 01, 2014
USD ($)
Related Party Transaction [Line Items]                      
General and administrative expenses       $ 4,056     $ 2,315 $ 11,856 $ 5,449    
Property operating expenses       12,000     7,710 32,668 18,665    
Note receivable from PRO       $ 0       $ 0   $ 1,778  
Number of self storage properties acquired | property   5   15 21 6   42      
Loan receivable settled in self storage property acquisition       $ 0 $ 0 $ 1,778   $ 1,778      
Participating Regional Operator [Member] | Management [Member]                      
Related Party Transaction [Line Items]                      
Note receivable from PRO                     $ 8,000
Number of self storage properties acquired | property     2             13  
Loan receivable settled in self storage property acquisition                   $ 6,200  
Bridge loan agreement       $ 5,300       $ 5,300      
Related party, weighted average fixed rate       3.30%       3.30%      
Participating Regional Operator [Member] | Management [Member] | Other assets, net [Member]                      
Related Party Transaction [Line Items]                      
Note receivable from PRO                   $ 1,800  
Participating Regional Operator [Member] | Affiliated Entity [Member]                      
Related Party Transaction [Line Items]                      
Number of self storage properties acquired | property               11      
SecuCare Self Storage Inc. [Member] | Affiliated Entity [Member]                      
Related Party Transaction [Line Items]                      
Related Party Transaction, Expenses from Transactions with Related Party       $ 300     300 $ 400 300    
Supervisory and Administrative Fee Agreement [Member] | Participating Regional Operator [Member] | Management [Member]                      
Related Party Transaction [Line Items]                      
General and administrative expenses       2,000     1,200 $ 5,400 2,900    
Supervisory and Administrative Fee Agreement [Member] | Participating Regional Operator [Member] | Minimum [Member] | Management [Member]                      
Related Party Transaction [Line Items]                      
Fee agreement on gross revenue, percent               5.00%      
Supervisory and Administrative Fee Agreement [Member] | Participating Regional Operator [Member] | Maximum [Member] | Management [Member]                      
Related Party Transaction [Line Items]                      
Fee agreement on gross revenue, percent               6.00%      
Payroll Services [Member] | Participating Regional Operator [Member] | Management [Member]                      
Related Party Transaction [Line Items]                      
Property operating expenses       $ 3,500     2,400 $ 9,600 5,700    
Call Center Services [Member] | SecuCare Self Storage Inc. [Member] | Affiliated Entity [Member]                      
Related Party Transaction [Line Items]                      
Property operating expenses             $ 100 $ 200 300    
Area occupied by related party | ft²       1,500       1,500      
Annual rent               $ 25      
Call Center Services [Member] | SecuCare Self Storage Inc. [Member] | Affiliated Entity [Member] | Call Center [Member]                      
Related Party Transaction [Line Items]                      
Issuance of OP units and subordinated performance units for acquisition of call center | shares 50,000                    
Self Storage Property [Member] | SecuCare Self Storage Inc. [Member] | Affiliated Entity [Member]                      
Related Party Transaction [Line Items]                      
Related Party Transaction, Expenses from Transactions with Related Party                 $ 2,700