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Total Capital and Net Income Per Unit Net Income (Loss) Per Common Unit (Details) - USD ($) $ / shares in Units, $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2021 | Jun. 30, 2020 | Jun. 30, 2021 | Jun. 30, 2020
Class of Stock [Line Items] |  |  |  |
Limited partners’ interest in net income (loss) | $ 46,040 | $ 37,796 | $ 125,780 | $ (834)
Weighted average number of common units | 86,970,999 | 82,197,665 | 86,963,374 | 79,629,623
Dilutive effect of unit-based compensation | 162,147 | 64,570 | 149,142 | 0
Weighted average number of common units and common unit equivalents (in units) | 87,133,146 | 82,262,235 | 87,112,516 | 79,629,623
Basic (usd per unit) | $ 0.53 | $ 0.46 | $ 1.45 | $ (0.01)
Diluted (usd per unit) | $ 0.53 | $ 0.46 | $ 1.44 | $ (0.01)
Limited Partners | Preferred Units |  |  |  |
Class of Stock [Line Items] |  |  |  |
Dividends, Preferred Stock, Cash | $ 6,400 | $ 6,400 | $ 12,900 | $ 12,900

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