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Stock-Based Compensation (Deferred Stock) - Additional Information (Detail) - shares | 3 Months Ended | 4 Months Ended | 9 Months Ended | 12 Months Ended |
--- | --- | --- | --- | --- | ---
Oct. 07, 2023 | Jul. 15, 2023 | Jul. 16, 2022 | Apr. 23, 2022 | Oct. 07, 2023 | Jan. 01, 2021 | Aug. 31, 2023
Annual Grants | Non Employee Directors |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |
Aggregate shares elected to receive |  | 59,400 |  |  |  |  |
Annual Grants | Deferred Stock | Non Employee Directors |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |
Vesting period |  |  |  |  |  | 1 year |
Aggregate shares elected to receive |  | 15,900 | 58,300 |  | 5,780 |  |
Prorated Portion of Annual Grant | Deferred Stock | Non Employee Directors |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |
Shares vested |  |  |  |  |  |  | 1,980
Prorated Portion of Annual Grant | Deferred Stock | Two Newly Elected Non-employee Directors |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |
Aggregate shares elected to receive | 4,660 |  |  |  |  |  |
Retainer Conversion |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |
Retainers conversion into deferred shares |  |  |  |  | 100.00% |  |
Vesting period |  |  |  |  | 1 year |  |
Director Retainer Deferrals | Deferred Stock | Non Employee Directors |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |
Aggregate shares elected to receive |  |  |  |  | 14,249 |  |
Director Retainer Deferrals | Omnibus Plan | Deferred Stock | Non Employee Directors |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |
Aggregate shares elected to receive |  |  |  | 3,640 | 3,479 |  |

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