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Net Income per Unit | 9 Months Ended
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Sep. 30, 2013
Earnings Per Share [Abstract] |
Net Income per Unit | Net Income per Unit Net income per unit applicable to limited partners (including subordinated unitholders) is computed by dividing limited partners' interest in net income, after deducting any incentive distributions, by the weighted-average number of outstanding common and subordinated units. Our net income is allocated to the limited partners in accordance with their respective partnership percentages, after giving effect to priority income allocations for incentive distributions, if any, to SUSS, the holder of the IDRs, pursuant to our partnership agreement. Net income per unit is only calculated for the Partnership after the IPO as no units were outstanding prior to September 25, 2012. Earnings in excess of distributions are allocated to the limited partners based on their respective ownership interests. Payments made to our unitholders are determined in relation to actual distributions declared and are not based on the net income allocations used in the calculation of net income per unit. In addition to the common and subordinated units, we have also identified the IDRs as participating securities and use the two-class method when calculating the net income per unit applicable to limited partners, which is based on the weighted-average number of common units outstanding during the period. Diluted net income per unit includes the effects of potentially dilutive units on our common units, consisting of nonvested phantom units. Basic and diluted net income per unit applicable to subordinated limited partners are the same because there are no potentially dilutive subordinated units outstanding. We also disclose limited partner units issued and outstanding. A reconciliation of the numerators and denominators of the basic and diluted per unit computations is as follows:
| Three Months Ended |  | Nine Months Ended
| September 30, 2013 |  | September 30, 2013
| (in thousands, except units and per unit amounts)
Net income | $ | 9,597 |  |  | $ | 27,504 |
Less: General partner's interest in net income | — |  |  | — |
Limited partners' interest in net income | $ | 9,597 |  |  | $ | 27,504 |
Weighted average limited partner units outstanding: |  |  |
Common - basic | 10,963,671 |  |  | 10,947,514 |
Common - equivalents | 26,970 |  |  | 21,845 |
Common - diluted | 10,990,641 |  |  | 10,969,359 |
Subordinated - SUSS (basic and diluted) | 10,939,436 |  |  | 10,939,436 |
Net income per limited partner unit: |  |  |
Common - basic | $ | 0.44 |  |  | $ | 1.26 |
Common - diluted | $ | 0.43 |  |  | $ | 1.25 |
Subordinated - SUSS (basic and diluted) | $ | 0.44 |  |  | $ | 1.26 |
| Three Months Ended |  | Nine Months Ended
| September 30, 2012 |  | September 30, 2012
| (in thousands, except units and per unit amounts)
Net income | $ | 3,617 |  |  | $ | 8,994 |
Less: Predecessor income prior to initial public offering on September 25, 2012 | 3,043 |  |  | 8,420 |
Limited partners' interest in net income | $ | 574 |  |  | $ | 574 |
Net income per limited partner unit: |  |  |
Common | $ | 0.03 |  |  | $ | 0.03 |
Subordinated | $ | 0.03 |  |  | $ | 0.03 |
Limited partner units outstanding: |  |  |
Common units - public | 10,925 |  |  | 10,925,000 |
Common units - affiliated | 14.436 |  |  | 14,436 |
Subordinated units - affiliated | 10,939.436 |  |  | 10,939,436 |

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- Definition The entire disclosure for earnings per share. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 45 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=7655603&loc=d3e1278-109256 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=7655603&loc=d3e1252-109256 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 55 -Paragraph 52 -URI http://asc.fasb.org/extlink&oid=32703322&loc=d3e4984-109258 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.21) -URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688 + Details
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