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Net Income Per Unit (Details) $ / shares in Units, $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2018 USD ($) $ / shares shares | Jun. 30, 2017 USD ($) $ / shares shares | Jun. 30, 2018 USD ($) $ / shares shares | Jun. 30, 2017 USD ($) $ / shares shares
Net Income Per Unit [Line Items] |  |  |  |  |
Net income attributable to partners |  | $ 25,582 | $ 18,977 | $ 45,577 | $ 33,572
Less: Partners' distribution |  | 18,784 | 17,175 | 37,071 | 33,962
Allocation of earnings in excess (deficit) of distributions |  | $ 598 | $ (2,806) | $ (3,404) | $ (9,235)
Footnote [Abstract] |  |  |  |  |
General partner's ownership interest (as percent) |  | 2.00% | 2.00% | 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 |  | 24,386,031 | 24,335,338 | 24,384,341 | 24,331,991
Common units - (diluted) (in shares) | shares |  | 24,394,103 | 24,375,946 | 24,391,760 | 24,371,540
Common units - (basic) (in dollars per share) | $ / shares |  | $ 0.79 | $ 0.59 | $ 1.38 | $ 1.02
Common units - (diluted) (in dollars per share) | $ / shares |  | $ 0.79 | $ 0.59 | $ 1.38 | $ 1.02
General Partner |  |  |  |  |
Net Income Per Unit [Line Items] |  |  |  |  |
Net income attributable to partners |  |  |  | $ 11,842 |
Less: General partner's distribution (including IDRs) | [1] | $ 6,200 | $ 4,608 | 11,910 | $ 8,845
Allocation of earnings in excess (deficit) of distributions |  | 12 | (56) | (68) | (184)
Total partner's earnings |  | 6,212 | 4,552 | 11,842 | 8,661
Common unitholders | Common Units |  |  |  |  |
Net Income Per Unit [Line Items] |  |  |  |  |
Less: Partners' distribution |  | 18,784 | 17,175 | 37,071 | 33,962
Allocation of earnings in excess (deficit) of distributions |  | 586 | (2,750) | (3,336) | (9,051)
Total partner's earnings |  | $ 19,370 | $ 14,425 | $ 33,735 | $ 24,911
Common units - (basic) (in shares) | shares | [2] | 24,386,031 | 24,335,338 | 24,384,341 | 24,331,991
Common units - (diluted) (in shares) | shares | [2] | 24,394,103 | 24,375,946 | 24,391,760 | 24,371,540
Common units - (basic) (in dollars per share) | $ / shares | [2] | $ 0.79 | $ 0.59 | $ 1.38 | $ 1.02
Common units - (diluted) (in dollars per share) | $ / shares | [2] | $ 0.79 | $ 0.59 | $ 1.38 | $ 1.02
[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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