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v3.20.2

Subsequent Events - Additional Information (Detail) - USD ($) $ / shares in Units, shares in Thousands, $ in Millions |  |  | 1 Months Ended | 2 Months Ended | 3 Months Ended | 12 Months Ended | 84 Months Ended | 97 Months Ended
--- | --- | --- | --- | --- | --- | --- | --- | ---
Nov. 16, 2020 | Oct. 27, 2020 | Nov. 30, 2020 | Oct. 31, 2020 | Sep. 30, 2020 | Aug. 31, 2020 | Jul. 31, 2020 | Nov. 30, 2020 | Sep. 30, 2020 | Jun. 30, 2020 | Mar. 31, 2020 | Dec. 31, 2019 | Sep. 30, 2020 | Sep. 30, 2019 | Jul. 31, 2020
Repurchase Plan |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Company's common units repurchased and retired |  |  |  |  |  |  |  | 255 | 159 | 725 |  | 1,139 | 1,155 | 782 | 1,281 | 4,357 | 13,340 | 14,400
Average price paid per unit | [1] |  |  |  |  |  |  | $ 9.63 | $ 9.33 | $ 8.97 |  | $ 9.17 | $ 8.15 | $ 8.33 | $ 9.42 | $ 8.82 | $ 8.08 |
Subsequent Event | Propane Assets |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Proceeds from sale of propane assets |  |  | $ 7.0 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Subsequent Event | Repurchase Plan |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Company's common units repurchased and retired |  |  |  | 1,553 |  | 308 |  |  |  |  | 500 |  |  |  |  |  |  |
Average price paid per unit |  |  |  | $ 9.83 | [1] | $ 9.64 | [1] |  |  |  | $ 9.65 |  |  |  |  |  |  |
Subsequent Event | Unit Purchase Agreement | Moab Partners, L.P. |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Company's common units repurchased |  | 1,400 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Aggregate consideration paid for common units purchased |  | $ 13.8 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Subsequent Event | Dividend Declared |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Distribution declared |  |  |  |  |  | 0.1325 |  |  |  |  |  |  |  |  |  |  |  |
Partners capital projected distribution amount on annualized basis |  |  |  |  |  | 0.53 |  |  |  |  |  |  |  |  |  |  |  |
Minimum dividend distribution per unit |  |  |  |  |  | $ 0.0675 |  |  |  |  |  |  |  |  |  |  |  |
Amount to paid to common unit holders |  |  |  |  |  | $ 5.7 |  |  |  |  |  |  |  |  |  |  |  |
Amount to paid to the General Partner |  |  |  |  |  | 0.2 |  |  |  |  |  |  |  |  |  |  |  |
Incentive distribution to the General Partner |  |  |  |  |  | 0.2 |  |  |  |  |  |  |  |  |  |  |  |
Incentive distributions to management |  |  |  |  |  | $ 0.2 |  |  |  |  |  |  |  |  |  |  |  |
Dividend paid date |  |  |  |  |  | Nov. 10, 2020 |  |  |  |  |  |  |  |  |  |  |  |
Dividend record date |  |  |  |  |  | Nov. 02, 2020 |  |  |  |  |  |  |  |  |  |  |  |
[1] | Amounts include repurchase costs.

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