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Net Income Per Unit (Details) $ / shares in Units, $ in Thousands | 3 Months Ended
--- | ---
Mar. 31, 2018 USD ($) $ / shares shares | Mar. 31, 2017 USD ($) $ / shares shares
Net Income Per Unit [Line Items] |  |  |
Net income attributable to partners |  | $ 19,995 | $ 14,595
Less: Partners' distribution |  | 18,287 | 16,787
Allocation of distributions in excess of earnings |  | $ (4,002) | $ (6,429)
Footnote [Abstract] |  |  |
General partner's ownership interest (as percent) |  | 2.00% | 2.00%
Quarterly distributions of available cash, minimum level (in dollars per share) | $ / shares |  | 0.43125 |
Common Units |  |  |
Net Income Per Unit [Line Items] |  |  |
Common units - (basic) (in shares) | shares |  | 24,382,633 | 24,328,607
Common units - (diluted) (in shares) | shares |  | 24,393,746 | 24,380,770
Common units - (basic) (in dollars per share) | $ / shares |  | $ 0.59 | $ 0.43
Common units - (diluted) (in dollars per share) | $ / shares |  | $ 0.59 | $ 0.43
General Partner |  |  |
Net Income Per Unit [Line Items] |  |  |
Net income attributable to partners |  | $ 5,630 |
Less: General partner's distribution (including IDRs) | [1] | 5,710 | $ 4,237
Allocation of distributions in excess of earnings |  | (80) | (128)
Total partner's earnings |  | 5,630 | 4,109
Common unitholders | Common Units |  |  |
Net Income Per Unit [Line Items] |  |  |
Less: Partners' distribution |  | 18,287 | 16,787
Allocation of distributions in excess of earnings |  | (3,922) | (6,301)
Total partner's earnings |  | $ 14,365 | $ 10,486
Common units - (basic) (in shares) | shares | [2] | 24,382,633 | 24,328,607
Common units - (diluted) (in shares) | shares | [2] | 24,393,746 | 24,380,770
Common units - (basic) (in dollars per share) | $ / shares | [2] | $ 0.59 | $ 0.43
Common units - (diluted) (in dollars per share) | $ / shares | [2] | $ 0.59 | $ 0.43
[1] | General partner distributions (including IDRs) consist of the 2% general partner interest and IDRs, which represent the right of the general partner to receive increasing percentages of quarterly distributions of available cash from operating surplus in excess of $0.43125 per unit per quarter. See Note 9 for further discussion related to IDRs.
[2] | Fees payable to the Partnership by Delek.

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