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Equity-Based Compensation | 9 Months Ended
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Sep. 30, 2013
Share-based Compensation [Abstract] |
Share-Based Compensation | Equity-Based Compensation Unit-based compensation expense related to the Partnership and stock-based compensation expense allocated to our Predecessor that was included in our Consolidated Statements of Operations was as follows (in thousands):
| Three Months Ended |  | Nine Months Ended
| September 30, 2012 |  | September 30, 2013 |  | September 30, 2012 |  | September 30, 2013
| Predecessor |  |  |  | Predecessor |  |
Phantom common units | $ | 6 |  |  | $ | 101 |  |  | $ | 6 |  |  | $ | 407 |
Predecessor allocated expense | 241 |  |  | — |  |  | 810 |  |  | — |
SUSS allocated expense | — |  |  | 445 |  |  | — |  |  | 944 |
Total equity-based compensation expense | $ | 247 |  |  | $ | 546 |  |  | $ | 816 |  |  | $ | 1,351 |
Phantom Common Unit Awards During the third quarter of 2013, 3,674 grants were issued. The fair value of each phantom unit on the grant date is based on the market price of our common unit on that date. The estimated fair value of our phantom units is amortized over the vesting period using the straight-line method. Non-employee director awards vest over a one to three-year period and employee awards vest ratably over a two to five-year service period. The fair value of nonvested service phantom units outstanding as of September 30, 2013, totaled $0.9 million which will be amortized to expense over the requisite service period. A summary of our phantom unit award activity is set forth below:
| Number of Phantom Common Units |  | Weighted-Average Grant Date Fair Value
Nonvested at December 31, 2011 | — |  |  | $ | — |
Granted | 32,500 |  |  | 18.93 |
Nonvested at December 31, 2012 | 32,500 |  |  | 18.93 |
Granted | 15,813 |  |  | 27.15 |
Vested | (7,834 | ) |  | 19.12 |
Nonvested at September 30, 2013 | 40,479 |  |  | $ | 22.10 |

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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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