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Schedule III Summary of Activity in Real Estate Facilities (Detail) - USD ($) | 1 Months Ended | 9 Months Ended | 12 Months Ended
--- | --- | --- | ---
Jan. 31, 2021 | Sep. 30, 2023 | Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
Real estate facilities |  |  |  |  |  |
Real estate facilities, Balance at beginning of year | $ 1,210,102,582 | $ 1,887,205,645 | $ 1,593,623,628 |  | $ 1,210,102,582 | $ 1,173,825,368
Facility acquisitions | 371,507,610 |  | 298,341,568 |  | 47,162,974 | 0
Impact of foreign exchange rate changes |  | (458,653) | (12,984,154) |  | (138,457) | 4,147,798
Improvements and additions |  |  | 8,224,603 |  | 12,151,893 | 32,129,416
Other facility acquisitions |  |  | 69,981,850 | [1] | 15,689,143 |
Disposition due to deconsolidation |  |  |  |  | (15,689,143) |
Real estate facilities, Balance at end of year |  | 1,918,681,492 | 1,887,205,645 |  | 1,593,623,628 | 1,210,102,582
Accumulated depreciation |  |  |  |  |  |
Accumulated depreciation, beginning balance | (115,903,045) | (202,682,688) | (155,926,875) |  | (115,903,045) | (83,692,491)
Depreciation expense |  | (39,331,373) | (48,400,073) |  | (40,158,233) | (31,711,102)
Disposition due to deconsolidation |  |  |  |  | 62,466 |
Impact of foreign exchange rate changes |  | 97,602 | 1,644,260 |  | 71,937 | (499,452)
Accumulated depreciation, ending balance |  | (241,916,459) | (202,682,688) |  | (155,926,875) | (115,903,045)
Construction in process |  |  |  |  |  |
Construction in process, Balance at beginning of year | $ 1,761,303 | 4,490,926 | 1,799,004 |  | 1,761,303 | 12,237,722
Net additions and assets placed into service |  |  | 2,691,922 |  | 37,701 | (10,476,419)
Construction in process, Balance at end of year |  | 6,085,298 | 4,490,926 |  | 1,799,004 | 1,761,303
Real estate facilities, net |  | $ 1,682,850,331 | $ 1,689,013,883 |  | $ 1,439,495,757 | $ 1,095,960,840
[1] | Such amount includes four individual property acquisitions completed during the year ended December 31, 2022.

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