Annual report pursuant to Section 13 and 15(d)

INVESTMENT IN UNCONSOLIDATED REAL ESTATE VENTURES - Condensed Operating Information (Details)

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INVESTMENT IN UNCONSOLIDATED REAL ESTATE VENTURES - Condensed Operating Information (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Schedule of Equity Method Investments [Line Items]      
Total revenues $ 858,063 $ 801,569 $ 585,671
Property operating expenses 228,986 211,025 155,265
Depreciation and amortization (221,993) (233,158) (158,312)
Interest expense (166,147) (110,599) (72,062)
Net income attributable to National Storage Affiliates Trust 156,669 103,737 105,253
Equity Method Investment, Nonconsolidated Investee or Group of Investees | Joint Venture      
Schedule of Equity Method Investments [Line Items]      
Total revenues 214,292 212,832 187,861
Property operating expenses (59,740) (57,306) (50,829)
Supervisory, administrative and other expenses (14,146) (13,955) (12,288)
Depreciation and amortization (68,333) (68,289) (61,628)
Interest expense (41,665) (41,657) (41,658)
Acquisition and other expenses (459) (899) (511)
Net income attributable to National Storage Affiliates Trust $ 29,949 $ 30,726 $ 20,947