| Schedule of Net Income (Loss) Per Common Unit |
The following table details the calculation of net income (loss) per common unit: | | | | | | | | | | | | | | | | | | | | | | | | | | Three Months Ended June 30, | | | | Six Months Ended June 30, | | | | | 2020 | | 2019 | | 2020 | | 2019 | | | (Thousands of Dollars, Except Unit and Per Unit Data) | | | | | | | | Net income (loss) | $ | 29,766 | | | $ | 45,951 | | | $ | (117,875) | | | $ | (231,912) | | Distributions to preferred limited partners | (30,684) | | | (30,423) | | | (61,107) | | | (60,846) | | | Distributions to common limited partners | (43,678) | | | (64,658) | | | (87,408) | | | (129,348) | | | Distribution equivalent rights to restricted units | (502) | | | (642) | | | (1,008) | | | (1,285) | | | Distributions in excess of income (loss) | $ | (45,098) | | | $ | (49,772) | | | $ | (267,398) | | | $ | (423,391) | | | | | | | | | | | Distributions to common limited partners | $ | 43,678 | | | $ | 64,658 | | | $ | 87,408 | | | $ | 129,348 | | Allocation of distributions in excess of income (loss) | (45,098) | | | (49,772) | | | (267,398) | | | (423,391) | | | Series D Preferred Unit accretion | (5,064) | | | (4,446) | | | (9,966) | | | (8,748) | | | Net (loss) income attributable to common units | $ | (6,484) | | | $ | 10,440 | | | $ | (189,956) | | | $ | (302,791) | | | | | | | | | | | Basic weighted-average common units outstanding | 109,194,722 | | | 107,763,016 | | | 109,046,061 | | | 107,647,957 | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Basic net (loss) income per common unit | $ | (0.06) | | | $ | 0.10 | | | $ | (1.74) | | | $ | (2.81) | |
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