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Equity Based Compensation (Tables) | 12 Months Ended
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Dec. 31, 2013
Equity Based Compensation [Abstract] |
Schedule of Share-based Compensation, Phantom Units Award Activity [Table Text Block] | A summary of our unit award activity for the twelve months ended December 31, 2013 is set forth below:
|  | Number of Phantom Units |  | Weighted-Average Grant Price
Non-vested | January 1, 2013 | 494,883 |  |  | $ | 22.65 |
Granted |  | 7,500 |  |  | $ | 34.12 |
Vested |  | 184,323 |  |  | $ | 22.68 |
Forfeited |  | 43,108 |  |  | $ | 22.65 |
Non-vested | December 31, 2013 | 274,952 |  |  | $ | 22.94 |

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- Definition Tabular disclosure of share-based compensation plans that may be presented in a single table for outstanding, vested and expected to vest, and exercisable awards. The information that may be disclosed in this table may include, but is not limited to, number of shares, weighted average exercise price, weighted average remaining contractual life, and aggregate intrinsic value. + References No definition available. + Details
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