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Common Unit Repurchase and Retirement - Company's Repurchase Activities (Detail) - $ / shares
shares in Thousands
 1 Months Ended 3 Months Ended 120 Months Ended 122 Months Ended
Jan. 31, 2023
Dec. 31, 2022
Nov. 30, 2022
Oct. 31, 2022
Dec. 31, 2022
Sep. 30, 2022
Aug. 31, 2022
Repurchase Plan              
Capital Unit [Line Items]              
Total Number of Units Purchased   90 167 154 411 24,933 19,900
Average Price Paid per Unit [1]   $ 9.45 $ 8.71 $ 8.45 $ 8.77 $ 8.82  
Maximum Number of Units that May Yet Be Purchased   1,146 1,236 1,403 1,146 1,557  
Repurchase Plan | Subsequent Event              
Capital Unit [Line Items]              
Total Number of Units Purchased 0            
Average Price Paid per Unit [1] $ 0            
Maximum Number of Units that May Yet Be Purchased [2] 1,146            
Publicly Announced Plans or Programs As Part of Repurchase Plan              
Capital Unit [Line Items]              
Total Number of Units Purchased   90 167 154 411 20,045  
Publicly Announced Plans or Programs As Part of Repurchase Plan | Subsequent Event              
Capital Unit [Line Items]              
Total Number of Units Purchased 0            
[1] Amount includes repurchase costs.
[2] Of the total available for repurchase, approximately 0.8 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.