Annual report pursuant to Section 13 and 15(d)

Related Party Transactions (Narrative) (Details)

v3.20.4
Related Party Transactions (Narrative) (Details)
$ in Thousands
 12 Months Ended
Dec. 31, 2020
USD ($)
item
Dec. 31, 2019
USD ($)
Dec. 31, 2018
USD ($)
Related Party Transaction [Line Items]      
Interest and other income $ 1,234 $ 4,492 $ 1,510
Royalty-free license agreement written notice of termination period minimum (in months) 6 months    
Number of assets owned that are maintained by Public Storage | item 2    
Property management contract written notice of termination period minimum (in days) 60 days    
Management fee expenses $ 100 100 100
Costs allocated from related party 100 100 100
Reimbursement to related party 1,200 1,200 1,200
Property Management [Member]      
Related Party Transaction [Line Items]      
Interest and other income 300 300 400
Operating expenses allocated to operating party 400 400 500
Maximum [Member]      
Related Party Transaction [Line Items]      
Reimbursement from related party 100 100 $ 100
Due to related parties $ 100 $ 100