Quarterly report pursuant to Section 13 or 15(d)

Investment in Storage Facilities and Intangible Assets - Summary of Activity in Storage Facilities (Detail)

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Investment in Storage Facilities and Intangible Assets - Summary of Activity in Storage Facilities (Detail)
$ in Thousands
3 Months Ended
Mar. 31, 2022
USD ($)
Cost:  
Beginning balance $ 7,090,457
Acquisition of storage facilities 348,017
Improvements and equipment additions 10,693
Net increase in construction in progress 5,430
Dispositions (189)
Ending balance 7,454,408
Accumulated Depreciation:  
Beginning balance 1,007,650
Additions during the period 40,800
Dispositions (151)
Ending balance $ 1,048,299