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Partners' Equity - Partnership's capital (Details) - shares
12 Months Ended 62 Months Ended 64 Months Ended 121 Months Ended
Dec. 31, 2022
Mar. 14, 2023
Mar. 14, 2024
Jun. 14, 2027
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Common units              
Partners' Equity              
Number of shares outstanding 51,687,865       51,137,201 47,517,824 46,860,182
General partner units              
Partners' Equity              
Number of shares outstanding 1,080,263       1,077,494 1,021,336 1,021,336
Class B units              
Partners' Equity              
Number of shares outstanding 1,245,000       1,660,000 2,075,000 2,490,000
Preference units              
Partners' Equity              
Number of shares outstanding 11,642,411       13,616,022 14,350,000 14,350,000
Series A preference units              
Partners' Equity              
Number of shares outstanding 5,084,984       5,750,000    
Distribution rate 8.625%     8.625%      
Series B preference units              
Partners' Equity              
Number of shares outstanding 3,496,382       4,135,571    
Distribution rate 8.20% 8.20%          
Series C preference units              
Partners' Equity              
Number of shares outstanding 3,061,045       3,730,451    
Distribution rate 8.50%   8.50%