Annual report pursuant to Section 13 and 15(d)

RELATED PARTY TRANSACTIONS - Narrative (Details)

v3.22.4
RELATED PARTY TRANSACTIONS - Narrative (Details)
$ in Thousands
 3 Months Ended 12 Months Ended
Jan. 01, 2022
USD ($)
shares
Dec. 31, 2021
USD ($)
shares
Dec. 31, 2022
USD ($)
property
Sep. 30, 2022
USD ($)
property
Jun. 30, 2022
USD ($)
property
Mar. 31, 2022
USD ($)
property
Dec. 31, 2021
USD ($)
property
Sep. 30, 2021
USD ($)
property
Jun. 30, 2021
USD ($)
property
Mar. 31, 2021
USD ($)
property
Dec. 31, 2022
USD ($)
property
shares
Dec. 31, 2021
USD ($)
property
shares
Dec. 31, 2020
USD ($)
Related Party Transaction [Line Items]                          
Payroll and related costs reimbursed to the PROs by the Company                     $ 211,025 $ 155,265 $ 123,486
Number of properties acquired | property     2 23 8 12 110 76 20 23 45 229  
Asset acquisition consideration     $ 39,919 $ 321,789 $ 114,533 $ 92,935 $ 1,140,393 $ 599,277 $ 269,393 $ 165,963 $ 569,176 $ 2,175,026  
Value of OP equity     $ 32,141 $ 6,244 $ 13,938 $ 16,576 $ 117,026 $ 31,074 $ 24,102 $ 22,897 $ 68,899 $ 195,099  
Reinsurance Company                          
Related Party Transaction [Line Items]                          
Ownership interest in reinsurance company acquired (percent)   0.54%         0.54%         0.54%  
OP units                          
Related Party Transaction [Line Items]                          
Issuance of shares/units (in shares) | shares                     3,911,260    
Series NW                          
Related Party Transaction [Line Items]                          
Issuance of shares/units (in shares) | shares 2,078,357                        
OP Units                          
Related Party Transaction [Line Items]                          
Number of units converted (in units) | shares 3,911,260                        
Affiliated entity | J. Timothy Warren | Series NW                          
Related Party Transaction [Line Items]                          
Number of units converted (in units) | shares 7,021                        
Affiliated entity | J. Timothy Warren | OP Units                          
Related Party Transaction [Line Items]                          
Number of units converted (in units) | shares 13,213                        
Conversion of stock $ 900                        
Affiliated entity | J. Timothy Warren's Adult Children | Series NW                          
Related Party Transaction [Line Items]                          
Number of units converted (in units) | shares 157,149                        
Affiliated entity | J. Timothy Warren's Adult Children | OP Units                          
Related Party Transaction [Line Items]                          
Conversion of stock $ 20,500                        
Shares issued in connection with asset acquisition (in shares) | shares 295,739                        
Supervisory and administrative fee agreement | Management | Participating Regional Operator (PRO)                          
Related Party Transaction [Line Items]                          
Supervisory and administrative fees paid to the PROs                     $ 22,600 $ 20,400 16,400
Supervisory and administrative fee agreement | Management | Participating Regional Operator (PRO) | Minimum                          
Related Party Transaction [Line Items]                          
Supervisory and administrative fee arrangement of gross revenue (percent)                     5.00%    
Supervisory and administrative fee agreement | Management | Participating Regional Operator (PRO) | Maximum                          
Related Party Transaction [Line Items]                          
Supervisory and administrative fee arrangement of gross revenue (percent)                     6.00%    
Payroll services | Management | Participating Regional Operator (PRO)                          
Related Party Transaction [Line Items]                          
Payroll and related costs reimbursed to the PROs by the Company                     $ 29,300 27,900 25,900
Due diligence costs | Management | Participating Regional Operator (PRO)                          
Related Party Transaction [Line Items]                          
Due diligence expenses payable to the PROs                     $ 400 $ 1,700 $ 500
Self Storage Property Purchase | Affiliate Entity Via Trustee                          
Related Party Transaction [Line Items]                          
Number of properties acquired | property                       8  
Asset acquisition consideration                       $ 102,700  
Self Storage Property Purchase | Affiliated entity | OP units                          
Related Party Transaction [Line Items]                          
Shares issued in connection with asset acquisition (in shares) | shares                       31,869  
Value of OP equity                       $ 2,100  
Self Storage Property Purchase | Affiliated Entity via Trustee and Trustee's Children | OP units                          
Related Party Transaction [Line Items]                          
Shares issued in connection with asset acquisition (in shares) | shares                       171,439  
Value of OP equity                       $ 10,200  
Acquisition of interest in reinsurance company | Kevin Howard Real Estate, Inc. | Reinsurance Company                          
Related Party Transaction [Line Items]                          
Consideration in acquisition transaction   $ 9,500                      
Cash paid in acquisition   $ 2,900                      
Acquisition of interest in reinsurance company | Kevin Howard Real Estate, Inc. | OP units | Reinsurance Company                          
Related Party Transaction [Line Items]                          
OP units issued in acquisition (in shares) | shares   96,256                      
Value of OP units issued in acquisition   $ 6,600                      
Acquisition of interest in reinsurance company | Affiliated entity | OP units | Reinsurance Company                          
Related Party Transaction [Line Items]                          
OP units issued in acquisition (in shares) | shares   48,128                      
Value of OP units issued in acquisition   $ 3,300