Annual report pursuant to Section 13 and 15(d)

Commitments and Contingencies - Additional Information (Detail)

v3.22.0.1
Commitments and Contingencies - Additional Information (Detail)
$ in Thousands
 1 Months Ended 12 Months Ended
Jan. 01, 2022
Property
Jan. 31, 2022
USD ($)
Property
Dec. 31, 2021
USD ($)
Property
Dec. 31, 2020
Property
Commitment And Contingencies [Line Items]        
Operating lease commitments     $ 24,486  
Number of storage facilities acquired | Property     112 40
Expansion and enhancement contracts     $ 61,400  
Self-storage Facilities [Member]        
Commitment And Contingencies [Line Items]        
Operating lease commitments     24,500  
Purchase price of business to be acquired     $ 246,300  
Number of storage facilities acquired | Property     10  
Self-storage Facilities [Member] | Subsequent Event [Member]        
Commitment And Contingencies [Line Items]        
Purchase price of business to be acquired   $ 165,000    
Number of storage facilities acquired | Property 15 6