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Selected Quarterly Financial Data (Details) (USD $) In Thousands, unless otherwise specified | 2 Months Ended | 3 Months Ended | 10 Months Ended | 12 Months Ended
--- | --- | --- | --- | ---
Dec. 31, 2012 | Dec. 31, 2012 | Sep. 30, 2012 | Jun. 30, 2012 | Mar. 31, 2012 | Dec. 31, 2011 | Sep. 30, 2011 | Jun. 30, 2011 | Mar. 31, 2011 | Nov. 05, 2012 | Dec. 31, 2012 | Dec. 31, 2011 | Dec. 31, 2010
Selected Quarterly Financial Data [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |
Tax benefit from conversion to Partnership |  |  |  |  |  |  |  |  |  |  | $ 18,534 |  |
Revenue, Net | 111,208 | 249,216 | 271,806 | 262,480 | 239,084 | 187,000 | 199,825 | 198,158 | 159,096 | 911,378 | 1,022,586 | 744,079 | 504,408
Operating Income (Loss) | 8,970 | 7,791 | 6,072 | 3,935 | 4,919 | 4,707 | 5,754 | 3,112 | 6,448 | 13,747 | 22,717 | 20,021 | 17,753
Net income |  | 26,092 | 2,968 | 2,488 | 2,511 | 3,488 | 3,400 | 2,001 | 3,758 |  | 34,059 | 12,647 | 10,087
Net Income (Loss) Allocated to Limited Partners |  |  |  |  |  |  |  |  |  |  | $ 8,242 |  |
Net Income (Loss), Per Outstanding Limited Partnership Unit, Basic |  |  |  |  |  |  |  |  |  |  | 0.34 |  |
Net Income (Loss) per Subordinated unit (basic and diluted) |  |  |  |  |  |  |  |  |  |  | 0.34 |  |

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