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Common Unit Repurchase and Retirement - Company's Repurchase Activities (Detail) - $ / shares shares in Thousands | 1 Months Ended | 3 Months Ended | 98 Months Ended | 108 Months Ended
--- | --- | --- | --- | ---
Jan. 31, 2022 | Dec. 31, 2021 | Nov. 30, 2021 | Oct. 31, 2021 | Dec. 31, 2021 | Aug. 31, 2020 | Sep. 30, 2021
Repurchase Plan |  |  |  |  |  |  |  |  |  |
Capital Unit [Line Items] |  |  |  |  |  |  |  |  |  |
Total Number of Units Purchased |  |  | 670 |  | 161 | 273 | 1,104 |  | 14,400 | 21,979
Average Price Paid per Unit | [1] |  | $ 10.56 |  | $ 10.99 | $ 10.67 | $ 10.65 |  |  | $ 8.60
Maximum Number of Units that May Yet Be Purchased |  |  | 2,157 | [2] | 2,414 | 2,575 | 2,157 | [2] |  | 2,848
Repurchase Plan | Subsequent Event |  |  |  |  |  |  |  |  |  |
Capital Unit [Line Items] |  |  |  |  |  |  |  |  |  |
Total Number of Units Purchased |  | 264 |  |  |  |  |  |  |  |
Average Price Paid per Unit | [1] | $ 10.59 |  |  |  |  |  |  |  |
Maximum Number of Units that May Yet Be Purchased | [3] | 1,893 |  |  |  |  |  |  |  |
Publicly Announced Plans or Programs As Part of Repurchase Plan |  |  |  |  |  |  |  |  |  |
Capital Unit [Line Items] |  |  |  |  |  |  |  |  |  |
Total Number of Units Purchased |  |  | 257 |  | 161 | 273 | 691 |  |  | 17,504
Publicly Announced Plans or Programs As Part of Repurchase Plan | Subsequent Event |  |  |  |  |  |  |  |  |  |
Capital Unit [Line Items] |  |  |  |  |  |  |  |  |  |
Total Number of Units Purchased |  | 264 |  |  |  |  |  |  |  |
[1] | Amount includes repurchase costs.
[2] | On December 30, 2021, the Company purchased 0.4 million Common Units in a private transaction for aggregate consideration of approximately $4.4 million. The approved purchase was made outside of the Company’s unit repurchase plan
[3] | Of the total available for repurchase, approximately 1.6 million units are available for repurchase in open market transactions and 0.3 million units are available for repurchase in privately-negotiated transactions, under the Repurchase Plan

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