Investment In Unconsolidated Affiliates (Condensed Consolidated Income Statements) (Details) (USD $) In Thousands	9 Months Ended	3 Months Ended	5 Months Ended	3 Months Ended	9 Months Ended	3 Months Ended	4 Months Ended	9 Months Ended
Sep. 30, 2011	Sep. 30, 2011 Lone Star [Member]	Sep. 30, 2011 Lone Star [Member]	Sep. 30, 2011 HPC [Member]	Sep. 30, 2010 HPC [Member]	Sep. 30, 2011 HPC [Member]	Sep. 30, 2010 HPC [Member]	Sep. 30, 2011 MEP [Member]	Sep. 30, 2010 MEP [Member]	Sep. 30, 2010 MEP [Member]	Sep. 30, 2011 MEP [Member]
Total revenues		$ 146,596	$ 245,416	$ 43,809	$ 49,409	$ 141,043	$ 128,973	$ 65,853	$ 56,997	$ 78,266	$ 195,620
Operating income		30,936	59,079	24,627	30,507	85,469	74,923	34,852	29,100	40,599	101,307
Net income	$ 59,991	$ 30,952	$ 58,910	$ 24,282	$ 30,366	$ 84,703	$ 74,640	$ 21,998	$ 16,351	$ 24,419	$ 62,684

The consolidated profit or loss for the period, net of income taxes, including the portion attributable to the noncontrolling interest.

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+ Details