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Common Unit Repurchase Plans and Retirement - Additional Information (Detail) - USD ($) shares in Thousands |  | 1 Months Ended | 2 Months Ended | 3 Months Ended | 12 Months Ended | 108 Months Ended | 122 Months Ended
--- | --- | --- | --- | --- | --- | --- | ---
Jul. 06, 2022 | Nov. 30, 2022 | Oct. 31, 2022 | Sep. 30, 2022 | Aug. 31, 2022 | Jul. 31, 2022 | Nov. 30, 2022 | Sep. 30, 2022 | Jun. 30, 2022 | Mar. 31, 2022 | Dec. 31, 2021 | Sep. 30, 2022 | Sep. 30, 2021 | Aug. 31, 2022
Capital Unit [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Company's common units authorized for repurchase |  |  |  |  | 1,700 | 400 |  |  |  |  |  |  |  | 1,700
Fifth Amendment |  |  |  |  |  |  |  |  |  |  |  |  |  |
Capital Unit [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Availability required to repurchase common units | $ 60,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |
Percentage of the maximum facility size on a historical proforma and forward-looking basis | 15.00% |  |  |  |  |  |  |  |  |  |  |  |  |
Non Seasonal maximum borrowing capacity under revolving credit facility | $ 0 |  |  |  |  |  |  |  |  |  |  |  |  |
Minimum fixed charge coverage ratio for distributions to unit holders or to repurchase common units | 115.00% |  |  |  |  |  |  |  |  |  |  |  |  |
Repurchase Plan |  |  |  |  |  |  |  |  |  |  |  |  |  |
Capital Unit [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Company's common units repurchased and retired |  |  |  | 129 | 116 | 126 |  | 371 | 487 | 992 | 1,104 | 2,954 | 21,979 | 19,900
Repurchase Plan | Subsequent Event [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Capital Unit [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Company's common units repurchased and retired |  | 167 | 154 |  |  |  | 300 |  |  |  |  |  |  |
Common Stock Available for Repurchase Under Privately Negotiated Transactions |  |  |  |  |  |  |  |  |  |  |  |  |  |
Capital Unit [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Company's common units authorized for repurchase |  |  |  |  | 300 |  |  |  |  |  |  |  |  | 300
Common Stock Available for Repurchase Under Privately Negotiated Transactions | Subsequent Event [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Capital Unit [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Company's common units authorized for repurchase |  | 300 |  |  |  |  | 300 |  |  |  |  |  |  |
Common Stock Available for Repurchase Under Open Market Transactions |  |  |  |  |  |  |  |  |  |  |  |  |  |
Capital Unit [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Company's common units authorized for repurchase |  |  |  |  | 1,400 |  |  |  |  |  |  |  |  | 1,400
Common Stock Available for Repurchase Under Open Market Transactions | Subsequent Event [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Capital Unit [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Company's common units authorized for repurchase |  | 1,000 |  |  |  |  | 1,000 |  |  |  |  |  |  |

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