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Long-Term Incentive Plan | 9 Months Ended
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Sep. 30, 2014
Disclosure of Compensation Related Costs, Share-based Payments [Abstract] |
Long-Term Incentive Plan | Long-Term Incentive Plan We have a long-term incentive plan (“LTIP”) for certain of our employees and for directors of our general partner. The LTIP primarily consists of phantom units and permits the grant of awards covering an aggregate payout of 9.4 million of our limited partner units. The estimated units available under the LTIP at September 30, 2014 total 1.4 million. The compensation committee of our general partner’s board of directors administers our LTIP. Our equity-based incentive compensation expense was as follows (in thousands):
| Three Months Ended |  | Nine Months Ended
| September 30, 2013 |  | September 30, 2013
| Equity Method |  | Liability Method |  | Total |  | Equity Method |  | Liability Method |  | Total
Performance-based awards: |  |  |  |  |  |  |  |  |  |  |
2010 awards | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | 121 |  |  | $ | 73 |  |  | $ | 194 |
2011 awards | 1,101 |  |  | 717 |  |  | 1,818 |  |  | 4,204 |  |  | 2,940 |  |  | 7,144 |
2012 awards | 856 |  |  | 432 |  |  | 1,288 |  |  | 2,563 |  |  | 1,413 |  |  | 3,976 |
2013 awards | 763 |  |  | 223 |  |  | 986 |  |  | 2,222 |  |  | 610 |  |  | 2,832 |
Retention awards | 125 |  |  | — |  |  | 125 |  |  | 353 |  |  | — |  |  | 353 |
Total | $ | 2,845 |  |  | $ | 1,372 |  |  | $ | 4,217 |  |  | $ | 9,463 |  |  | $ | 5,036 |  |  | $ | 14,499 |
Allocation of LTIP expense on our consolidated statements of income:
G&A expense |  |  |  |  | $ | 4,126 |  |  |  |  |  |  | $ | 13,928 |
Operating expense |  |  |  |  | 91 |  |  |  |  |  |  | 571 |
Total |  |  |  |  | $ | 4,217 |  |  |  |  |  |  | $ | 14,499 |
| Three Months Ended |  | Nine Months Ended
| September 30, 2014 |  | September 30, 2014
| Equity Method |  | Liability Method |  | Total |  | Equity Method |  | Liability Method |  | Total
Performance/market-based awards: |  |  |  |  |  |  |  |  |  |  |
2012 awards | $ | 1,022 |  |  | $ | 651 |  |  | $ | 1,673 |  |  | $ | 3,066 |  |  | $ | 3,192 |  |  | $ | 6,258 |
2013 awards | 1,350 |  |  | 558 |  |  | 1,908 |  |  | 4,726 |  |  | 2,411 |  |  | 7,137 |
2014 awards | 1,101 |  |  | — |  |  | 1,101 |  |  | 3,233 |  |  | — |  |  | 3,233 |
Retention awards | 296 |  |  | — |  |  | 296 |  |  | 1,103 |  |  | — |  |  | 1,103 |
Total | $ | 3,769 |  |  | $ | 1,209 |  |  | $ | 4,978 |  |  | $ | 12,128 |  |  | $ | 5,603 |  |  | $ | 17,731 |
Allocation of LTIP expense on our consolidated statements of income:
G&A expense |  |  |  |  | $ | 4,862 |  |  |  |  |  |  | $ | 17,322 |
Operating expense |  |  |  |  | 116 |  |  |  |  |  |  | 409 |
Total |  |  |  |  | $ | 4,978 |  |  |  |  |  |  | $ | 17,731 |
During 2014, 219,282 phantom unit awards were issued pursuant to our LTIP. These grants included both performance-based and retention awards and have a three-year vesting period. On February 3, 2014, we issued 388,819 limited partner units, of which 387,216 were issued to settle unit award grants to certain employees that vested on December 31, 2013 and 1,603 were issued to settle the equity-based retainer paid to a member of our general partner's board of directors. Basic and Diluted Net Income Per Limited Partner Unit The difference between the weighted-average number of limited partner units outstanding used for basic and diluted net income per unit calculations on our consolidated statements of income is the dilutive effect of phantom unit grants associated with our long-term incentive plan.

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- Definition The entire disclosure for compensation-related costs for equity-based compensation, which may include disclosure of policies, compensation plan details, allocation of equity compensation, incentive distributions, equity-based arrangements to obtain goods and services, deferred compensation arrangements, employee stock ownership plan details and employee stock purchase plan details. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5047-113901 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 50 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6406099&loc=d3e25284-112666 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 40 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6418621&loc=d3e17540-113929 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5444-113901 Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Staff Accounting Bulletin (SAB) -Number Topic 14 + Details
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