Annual report pursuant to Section 13 and 15(d)

SUBSEQUENT EVENTS (Details)

v3.3.1.900
SUBSEQUENT EVENTS (Details)
shares in Thousands, $ in Thousands, ft² in Millions
1 Months Ended 2 Months Ended 3 Months Ended 6 Months Ended 9 Months Ended 12 Months Ended
Feb. 28, 2014
property
Jan. 31, 2015
property
Feb. 29, 2016
USD ($)
property
shares
Jun. 30, 2016
USD ($)
ft²
storage_unit
property
Dec. 31, 2015
USD ($)
ft²
storage_unit
property
Sep. 30, 2015
USD ($)
property
Jun. 30, 2015
USD ($)
property
Mar. 31, 2015
USD ($)
property
Dec. 31, 2014
USD ($)
property
Sep. 30, 2014
USD ($)
property
Jun. 30, 2014
USD ($)
property
Mar. 31, 2014
USD ($)
property
Dec. 31, 2014
property
Dec. 31, 2013
USD ($)
Dec. 31, 2015
USD ($)
ft²
storage_unit
property
Dec. 31, 2014
USD ($)
property
Dec. 31, 2012
property
Subsequent Event [Line Items]                                  
Number of self storage properties acquired | property         16 15 21 6 15 31 36 1     58 83 43
Consideration given, cash                           $ 103,828 $ 171,822 $ 217,939  
Consideration given, value of vesting LTIP units         $ 1,402 $ 10,188 $ 22,971 $ 8,954 $ 28,254 $ 39,547 $ 72,803 $ 0     $ 43,515 140,604  
Total rentable square feet in self storage properties | ft²         15.8                   15.8    
Number of storage units owned | storage_unit         123,000                   123,000    
Debt assumed in acquisition         $ 23,643 $ 2,866 $ 30,547 $ 16,442 $ 6,270 $ 59,546 $ 0 $ 0     $ 73,498 $ 65,816  
Subsequent Event [Member]                                  
Subsequent Event [Line Items]                                  
Number of self storage properties acquired | property     16                            
Aggregate purchase price     $ 85,000                            
Subsequent Event [Member] | Series of Individually Immaterial Business Acquisitions [Member]                                  
Subsequent Event [Line Items]                                  
Number of self storage properties acquired | property     16                            
Aggregate purchase price     $ 85,000                            
Consideration given, cash     66,000                            
Consideration given, value of vesting LTIP units     $ 19,000                            
Subsequent Event [Member] | Series of Individually Immaterial Business Acquisitions [Member] | Participating Regional Operator [Member]                                  
Subsequent Event [Line Items]                                  
Number of self storage properties acquired | property     4                            
Subsequent Event [Member] | Series of Individually Immaterial Business Acquisitions [Member] | Unidentified Third Parties [Member]                                  
Subsequent Event [Line Items]                                  
Number of self storage properties acquired | property     12                            
Subsequent Event [Member] | Series of Individually Immaterial Business Acquisitions [Member] | OP units [Member]                                  
Subsequent Event [Line Items]                                  
Units issued for acquisition | shares     972                            
Subsequent Event [Member] | Series of Individually Immaterial Business Acquisitions [Member] | Subordinated performance units [Member]                                  
Subsequent Event [Line Items]                                  
Units issued for acquisition | shares     139                            
Subsequent Event [Member] | Series of Individually Immaterial Business Acquisitions [Member] | LTIP units [Member]                                  
Subsequent Event [Line Items]                                  
Share vested upon acquisition of property | shares     26                            
Forecast [Member] | Hide-Away [Member]                                  
Subsequent Event [Line Items]                                  
Aggregate purchase price       $ 115,000                          
Number of properties contributed | property       14                          
Total rentable square feet in self storage properties | ft²       1.0                          
Number of storage units owned | storage_unit       9,400                          
Forecast [Member] | Hide-Away [Member] | Class A And B Units [Member]                                  
Subsequent Event [Line Items]                                  
Consideration given, value of vesting LTIP units       $ 60,000                          
Forecast [Member] | Hide-Away [Member] | Mortgages [Member]                                  
Subsequent Event [Line Items]                                  
Debt assumed in acquisition       $ 42,000                          
Management [Member] | Participating Regional Operator [Member]                                  
Subsequent Event [Line Items]                                  
Number of self storage properties acquired | property 2 2                     16        
Due Diligence Costs [Member] | Management [Member] | Subsequent Event [Member] | Participating Regional Operator [Member]                                  
Subsequent Event [Line Items]                                  
Fees and expenses     $ 100